CN106568202A - Dry burning judgment method and device and water storage type heating device - Google Patents

Abstract

The invention is suitable the field of electronics and electrical appliances and provides a dry burning judgment method. The method includes the following steps that when after heating of a water storage type heating device is started, the current temperature rise velocity VT of the water storage type heating device within a preset current temperature rise time range is acquired; whether the current temperature rise velocity VT approaches a preset full-water temperature rise velocity VTy or approaches a preset dry burning temperature rise velocity VTe is judged; and when the current temperature rise velocity VT approaches the preset dry burning temperature rise velocity VTe, it is judged that the water storage type heating device is in a dry burning state. According to the dry burning judgment method provided by the embodiment of the invention, by judging whether the current temperature rise velocity VT approaches the preset dry burning temperature rise velocity VTe or not, when it is judged yes, it is judged that the water storage type heating device is in the dry burning state, a power source of a heater of the heating device can be automatically powered off, and the safety performance of the water storage type heating device is improved; and meanwhile, due to the design adopting only one temperature sensor, the production cost of the water storage type heating device is effectively saved.

Description

A kind of dry combustion method decision method, device and water storage type firing equipment

Technical field

The invention belongs to field of electronics, more particularly to a kind of dry combustion method decision method, device and water storage type firing equipment.

Background technology

At present, the water heater on market is multifarious, such as gas-type water heater, solar water heater, storage-type electric water heaterDeng with the development and the raising of living standards of the people of society, people prevent for the security requirement also more and more higher of water heaterOnly storage-type electric water heater dry combustion method is people's one side of interest.

Storage-type electric water heater of the prior art, typically ensures the safety of storage-type electric water heater using the following two kinds modeA kind of performance, mode is using two temperature sensors the dry-fire condition of water heater to be judged, detected；Another way isBy a temperature sensor and a level sensor dry-fire condition of water heater is judged, detected.

But, the anti-dry mode of existing storage-type electric water heater is although feasible, or but because its dry combustion method detection passes throughOr at least two temperature sensors, the inspection that temperature or water level are realized by a temperature sensor and level sensorSurvey, it is necessary to while ensureing that two testing equipments occur without failure, there is hardware failure risk greatly and production costHigh problem.

The content of the invention

The embodiment of the present invention provides a kind of dry combustion method decision method, it is intended to solve water storage type water heater using multiple sensors,There is a problem of that hardware failure risk is big and production high cost.

The embodiment of the present invention is achieved in that a kind of dry combustion method decision method, and methods described comprises the steps：

After the water storage type firing equipment starts heating, the water storage type firing equipment is obtained in default current intensificationTime range t₀Interior current heating rate V_T；

Judge current heating rate V_TJie Jin default full water heating rate V_TyOr heat up Jie Jin default dry combustion methodSpeed V_Te；

When current heating rate V_TWith default dry combustion method heating rate V_TeWhen close, then the water storage type heating is judgedEquipment is in dry-fire condition.

The embodiment of the present invention also provides a kind of dry combustion method decision maker, and described device includes：

Current heating rate acquiring unit, for after the water storage type firing equipment starts heating, obtaining the water storageType firing equipment is in default current heating-up time scope t₀Interior current heating rate V_T；

The close judging unit of heating rate, for judging current heating rate V_TJie Jin default full water heating rateV_TyOr Jie Jin default dry combustion method heating rate V_Te；And

Dry combustion method identifying unit, for when current heating rate V_TWith default dry combustion method heating rate V_TeWhen close, thenJudge that the water storage type firing equipment is in dry-fire condition.

The embodiment of the present invention also provides a kind of water storage type firing equipment, and the water storage type firing equipment includes：

Storage tank；

One temperature sensor for being used to detect the temperature of water in the storage tank；And

The temperature data of the temperature sensor detection is received, and the dry combustion method of dry combustion method judgement is carried out according to the temperature dataDecision maker, the dry combustion method judgment means include：

Current heating rate acquiring unit, for after the water storage type firing equipment starts heating, obtaining the water storageType firing equipment is in default current heating-up time scope t₀Interior current heating rate V_T；

The close judging unit of heating rate, for judging current heating rate V_TJie Jin default full water heating rateV_TyOr Jie Jin default dry combustion method heating rate V_Te；And

Dry combustion method identifying unit, for when current heating rate V_TWith default dry combustion method heating rate V_TeWhen close, thenJudge that the water storage type firing equipment is in dry-fire condition.

Dry combustion method decision method provided in an embodiment of the present invention, by using a temperature sensor the current intensification is judgedSpeed V_TWhether Jie Jin default dry combustion method heating rate V_Te, when judging to be, then judge that water storage type firing equipment is in dry combustion method shapeState, the heater of firing equipment can automatically cut off power supply, and detection sensitivity is higher, improve the safety of water storage type firing equipmentPerformance；Meanwhile, only with the design of a temperature sensor, the production cost of effectively save water storage type firing equipment.

Description of the drawings

Fig. 1 is a kind of flowchart of dry combustion method decision method provided in an embodiment of the present invention；

Fig. 2 is current intensification of the acquisition water storage type firing equipment provided in an embodiment of the present invention in default time rangeSpeed V_TFlowchart；

Fig. 3 is current heating rate V of judgement provided in an embodiment of the present invention_TJie Jin default full water heating rate V_Ty, alsoIt is Jie Jin default dry combustion method heating rate V_TeFlowchart；

Fig. 4 is acquisition full water heating rate V provided in an embodiment of the present invention_TyFlowchart；

Fig. 5 is acquisition dry combustion method heating rate V provided in an embodiment of the present invention_TeFlowchart；

Fig. 6 is a kind of structural representation of dry combustion method decision maker provided in an embodiment of the present invention；

Fig. 7 is that a kind of structure of the current heating rate acquiring unit of dry combustion method decision maker provided in an embodiment of the present invention is shownIt is intended to；

Fig. 8 is that a kind of structure of the close judging unit of heating rate of dry combustion method decision maker provided in an embodiment of the present invention is shownIt is intended to；

Fig. 9 is the structural representation that a kind of dry combustion method of dry combustion method decision maker provided in an embodiment of the present invention judges subelement；

Figure 10 is a kind of structural representation of water storage type firing equipment provided in an embodiment of the present invention.

Specific embodiment

In order that the objects, technical solutions and advantages of the present invention become more apparent, it is right below in conjunction with drawings and ExamplesThe present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, andIt is not used in the restriction present invention.

Dry combustion method decision method provided in an embodiment of the present invention, by judging current heating rate V_TWhether it is close to defaultDry combustion method heating rate V_Te, when judging to be, then judge that water storage type firing equipment is in dry-fire condition, the heater of firing equipmentPower supply can be automatically cut off, the security performance of water storage type firing equipment is improve；Meanwhile, only with setting for temperature sensorMeter, the production cost of effectively save water storage type firing equipment.

Dry combustion method determination methods provided in an embodiment of the present invention may be directly applied in water storage type firing equipment, to applyThe unit that hardware cell thereon, software unit or hardware are combined with software.

In embodiments of the present invention, water storage type firing equipment includes but is not limited to water storage type water heater, electric bottle, electric heatingCup, insulating pot, electrothermal water-bath etc..

What Fig. 1 showed a kind of dry combustion method decision method provided in an embodiment of the present invention realizes flow process, and details are as follows：

In step S101, after water storage type firing equipment starts heating, obtain water storage type firing equipment and work as defaultFront heating-up time scope t₀Interior current heating rate V_T。

In one embodiment of the invention, default current heating-up time scope t₀Can be 1min, 1.5min,2min, 2.5min, specifically can be set according to full water moisture storage capacity, heating power of water storage type firing equipment etc..

In step s 102, current heating rate V is judged_TJie Jin default full water heating rate V_TyOr Jie Jin defaultDry combustion method heating rate V_Te。

As one embodiment of the invention, default full water water heating rate V_TyWith default dry combustion method heating rate V_TeCanBeing that system is built-in；As another embodiment of the present invention, default full water water heating rate V_TyHeat up with default dry combustion methodSpeed V_TeCan be that User Defined is arranged.

As a practice of the present invention, default full water heating rate V_TyCan be 10 DEG C/min, 15 DEG C/min,20 DEG C/min etc.；Dry combustion method heating rate V_TeCan be 80 DEG C/min, 85 DEG C/min, 90 DEG C/min etc..It is appreciated that practiceIn, under normal circumstances, default full water heating rate V_TyIt is far smaller than dry combustion method heating rate V_Te。

In step s 103, when current heating rate V_TWith default dry combustion method heating rate V_TeWhen close, then water storage is judgedType firing equipment is in dry-fire condition.

In embodiments of the present invention, when current heating rate V_TWith default dry combustion method heating rate V_TeIt is such as current when closeHeating rate V_TFor 75 DEG C/min, dry combustion method heating rate V_TyFor 80 DEG C/min, then judge that water storage type firing equipment is in non-dry combustion methodState, water storage type firing equipment takes anti-dry to process, and such as automatically cuts off the power supply of heater, arranges alarm music, provides reportAlert indicator lamp etc., in case water storage type firing equipment burns out.

In step S104, when current heating rate V_TWith default full water heating rate V_TyWhen close, then water storage is judgedType firing equipment is in non-dry-fire condition.

In embodiments of the present invention, when current heating rate V_TWith default full water heating rate V_TyIt is such as current when closeHeating rate V_TFor 22 DEG C/min, full water heating rate V_TyFor 20 DEG C/min, then judge that water storage type firing equipment is in non-dry combustion methodState, equipment can continue heating work.

Dry combustion method decision method provided in an embodiment of the present invention, by using a temperature sensor the current intensification is judgedSpeed V_TWhether Jie Jin default dry combustion method heating rate V_Te, when judging to be, then judge that water storage type firing equipment is in dry combustion method shapeState, water storage type firing equipment can in time take anti-dry to process and such as cut off the electricity supply, sends alarm music, flicker alarm display lampDeng processing, the security performance of water storage type firing equipment is improve；Meanwhile, only with the design of a temperature sensor, effectively saveThe about production cost of water storage type firing equipment.

Show referring to Fig. 2, in embodiments of the present invention, obtain water storage type firing equipment in default time range t₀Interior works asFront heating rate V_TThe step of, including：

In step s 201, after water storage type firing equipment starts heating, current initial temperature value T is obtained₁, and start meterWhen；

In step S202, when the time of timing default current heating-up time scope t is reached₀When, acquisition currently terminatesTemperature value T₂；

In step S203, according to current initial temperature value T₁, current end temp value T₂And the default current heating-up timeScope t₀, calculate and obtain current heating rate V_T。

In practice, after such as water storage type water heater is opened, system obtains the water temperature in the storage tank of water heater face to faceFor 20 DEG C and start timing；When timing time reaches 1min, system obtains the temperature 50 C in current storage tank；System passes throughCalculate and obtain current heating rate V_TFor (50 DEG C -20 DEG C)/1min=30 DEG C/min.

It is appreciated that in other embodiments of the present invention, current initial temperature value T₁Can also be -10 DEG C, 0 DEG C, 10 DEG C,30 DEG C etc., determine with specific reference to actual environment situation；Current heating-up time scope t₀Can also be 0.5min, 1.5min, 2min,3min, 4min etc., specifically can need to arrange according to user；Current end temp value T₂Can also be 50 DEG C, 60 DEG C, 70 DEG C,80 DEG C etc., specifically do not limit.

In embodiments of the present invention, by according to current initial temperature value T₁, current end temp value T₂And it is default currentHeating-up time scope t₀, can quickly calculate current heating rate V of acquisition_T, equipment heating speed can be in real time obtained when in useDegree.

Referring to Fig. 3, in embodiments of the present invention, current heating rate V is judged_TJie Jin default full water heating rate V_TyAlsoIt is Jie Jin default dry combustion method heating rate V_TeThe step of, including：

In step S301, according to current heating rate V_TWith default full water heating rate V_Ty, calculate and obtain current literWarm speed V_TWith default full water heating rate V_TyThe absolute value △ V of difference_Ty

In step s 302, according to current heating rate V_TWith default dry combustion method heating rate V_Te, calculate and obtain current literWarm speed V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_Te；

In step S303, current heating rate V of comparison_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyWith current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeSize；

In step s 304, when current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyGreatlyIn current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhen, then judge the water storage type heatingEquipment is in dry-fire condition.

As a preferred embodiment of the present invention, when current heating rate V_TWith default full water heating rate V_TyDifferenceAbsolute value △ V_TyMore than current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhen, then sentenceThe step of fixed water storage type firing equipment is in dry-fire condition includes：

When current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyMore than the current speed that heats upRate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhen, judge current heating rate V_TWith default dry combustion method literWarm speed V_TeThe absolute value △ V of difference_TeWhether default dry combustion method error amount is less than.

Used as a preferred embodiment of the present invention, default dry combustion method error amount is 5 DEG C/min, now can precisely be judgedEquipment is, enough in dry-fire condition, to prevent the generation judged by accident, it is ensured that equipment normal work.In other embodiments of the present invention, in advanceIf dry combustion method error amount can also be 2 DEG C/min, 3 DEG C/min, 6 DEG C/min, 7 DEG C/min etc., specifically can be according to actual conditionsSelect.

If the determination result is YES, then judge that water storage type firing equipment is in dry-fire condition.

In a practice of the present invention, such as current heating rate V_TFor 74 DEG C/min, full water heating rate V_TyFor15 DEG C/min, dry combustion method heating rate V_TeFor 75 DEG C/min, default dry combustion method error amount is 5 DEG C/min, then current heating rate V_TWith full water heating rate V_TyThe absolute value △ V of difference_TyFor (74-15)=59, current heating rate V_TWith dry combustion method heating rate V_TeThe absolute value △ V of difference_TeFor (75-74)=1 DEG C/min, △ V_Ty=59 are more than △ V_Te=1 DEG C/min, and △ V_TeFor=1℃/min<Default dry combustion method error amount is 5 DEG C/min, then may determine that water storage type firing equipment in dry-fire condition, and heating setsStandby heater can cut off the electricity supply at once, prevent equipment dry combustion method, improve equipment safety performance.

In step S305, when current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyIt is littleIn current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhen, judge current heating rate V_TWithDefault full water heating rate V_TyThe absolute value △ V of difference_TyWhether default full water error amount is less than.

Used as a preferred embodiment of the present invention, default full water error amount is 5 DEG C/min, is now judged most accurately,Effectively prevent the generation judged by accident, it is ensured that equipment normal work.In other embodiments of the present invention, default full water error amount may be used alsoBeing 1 DEG C/min, 2 DEG C/min, 6 DEG C/min, 7 DEG C/min etc..

In step S306, if the determination result is YES, then judge that water storage type firing equipment is in non-dry-fire condition.

In step S307, if judged result is no, other operations are performed.

In embodiments of the present invention, when judged result is no, represent that equipment has exception, or equipment performs other worksMake program, be not specifically described in this invention.

In embodiments of the present invention, by arranging default dry combustion method error amount and default full water error amount, can be more smartWhether accurate detection water storage type firing equipment is in dry-fire condition, makes equipment detection accurately higher, improves equipment and uses safetyProperty.

Referring to Fig. 4, in embodiments of the present invention, default full water heating rate V_TyComprise the following steps acquisition：

In step S401, in water storage type firing equipment full water state, and start after heating, obtain full water initial temperature valueT_y1, and start timing.

In step S402, when the time of timing default full water heating-up time scope t is reached_yWhen, obtain full water and terminateTemperature value T_y2；

In step S403, according to full water initial temperature value T_y1, full water end temp value T_y2And during default full water intensificationBetween scope t_y, calculate and obtain full water heating rate V_Ty。

As a practice of the present invention, during water heater full water state, start heater, full water initial temperature value T_y1For 10 DEG C, when the time default full water heating-up time scope t of full water is reached_yFor 5min when, system obtain full water end temp valueT_y2For 75 DEG C, then full water heating rate V can be obtained by system-computed_Ty=(75-10)/5=13 DEG C/min.It is appreciated that at thisIn invention other embodiment, full water initial temperature value T_y1It can also be 15 DEG C, 18 DEG C, 20 DEG C, 25 DEG C etc., with specific reference to actual feelingsCondition selects to determine；Default full water heating-up time scope t_yCan also be for 2min, 3min, 4min, 6min etc., specifically can basisUser's request is adjusted；Full water end temp value T_y2Can also be 50 DEG C, 60 DEG C, 70 DEG C etc., specifically not limit.

In the present invention is implemented, by obtaining default full water heating-up time scope t_yIt is interior, full water end temp value T_y2WithFull water initial temperature value T_y1Difference, and then obtain default full water heating rate V_Ty, computational methods are simple, convenience, make water storageIt is more convenient that type firing equipment anti-dry judges.

Referring to Fig. 5, in embodiments of the present invention, default dry combustion method heating rate V_TeComprise the following steps acquisition：

In step S501, in water storage type firing equipment anhydrous state, and start after heating, obtain dry combustion method initial temperature valueT_e1, and start timing；

In step S502, when the time of timing default dry combustion method heating-up time scope t is reached_eWhen, obtain dry combustion method and terminateTemperature value T_e2；

In step S503, according to dry combustion method initial temperature value T_e1, dry combustion method end temp value T_e2And during default dry combustion method intensificationBetween scope t_y, calculate and obtain default dry combustion method heating rate V_Te。

As a practice of the present invention, during water heater anhydrous state, start heater, dry combustion method initial temperature value T_e2For 12 DEG C, when the time default dry combustion method heating-up time scope t is reached_eFor 1min when, system obtain dry combustion method end temp value T_e2For72 DEG C, then default dry combustion method heating rate V can be obtained by system-computed_Te=(72-12)/1=70 DEG C/min.It is appreciated thatIn other embodiments of the invention, dry combustion method initial temperature value T_e1It can also be 13 DEG C, 14 DEG C, 15 DEG C, 16 DEG C etc., with specific reference to realitySituation selects to determine；Default dry combustion method heating-up time scope t_eCan also be for 0.5min, 1.5min, 2min, 2.5min etc., specificallyCan be adjusted according to user's request；Dry combustion method end temp value T_e2Can also be 73 DEG C, 74 DEG C, 75 DEG C, 76 DEG C etc., specifically not limitIt is fixed.

In the present invention is implemented, by obtaining default dry combustion method heating-up time scope t_eIt is interior, dry combustion method end temp value T_e2WithDry combustion method initial temperature value T_e1Difference, and then obtain default dry combustion method heating rate V_Te, the judgement of water storage type firing equipment anti-dryMore precisely, it is more convenient.

It will appreciated by the skilled person that realize that all or part of step in above-described embodiment method is canTo instruct the hardware of correlation come what is completed by program, described program can be stored in a computer read/write memory mediumIn, described storage medium, such as ROM/RAM, disk, CD, flash memory disk.

Fig. 6 shows a kind of structure of dry combustion method decision maker provided in an embodiment of the present invention, for convenience of description, only illustratesPart related to the present invention.

Dry combustion method decision maker 600 provided in an embodiment of the present invention includes：

Current heating rate acquiring unit 610, for after water storage type firing equipment starts heating, obtaining water storage type heatingEquipment is in default current heating-up time scope t₀Interior current heating rate V_T。

In one embodiment of the invention, default current heating-up time scope t₀Can be 1min, 1.5min,2min, 2.5min, specifically can be set according to actual conditions.

The close judging unit 620 of heating rate, for judging current heating rate V_TJie Jin default full water heating rateV_TyOr Jie Jin default dry combustion method heating rate V_Te。

As one embodiment of the invention, default full water water heating rate V_TyWith default dry combustion method heating rate V_TeCanBeing that system is built-in；As another embodiment of the present invention, default full water water heating rate V_TyHeat up with default dry combustion methodSpeed V_TeCan be that User Defined is arranged.

As a practice of the present invention, default full water heating rate V_TyCan be 10 DEG C/min, 15 DEG C/min,20 DEG C/min etc.；Dry combustion method heating rate V_TeCan be 80 DEG C/min, 85 DEG C/min, 90 DEG C/min etc..It is appreciated that practiceIn, under normal circumstances, default full water heating rate V_TyIt is slower than dry combustion method heating rate V_Te。

Dry combustion method identifying unit 630, for when current heating rate V_TWith default dry combustion method heating rate V_TeWhen close, then sentenceWater storage type firing equipment is determined in dry-fire condition.

In embodiments of the present invention, when current heating rate V_TWith default dry combustion method heating rate V_TeIt is such as current when closeHeating rate V_TFor 75 DEG C/min, dry combustion method heating rate V_TyFor 80 DEG C/min, then judge that water storage type firing equipment is in non-dry combustion methodState, system automatically cuts off the heater of water storage type firing equipment, in case equipment burns out.

Dry combustion method decision maker provided in an embodiment of the present invention, by using a temperature sensor the current intensification is judgedSpeed V_TWhether Jie Jin default dry combustion method heating rate V_Te, when judging to be, then judge that water storage type firing equipment is in dry combustion method shapeState, water storage type firing equipment can in time take anti-dry to process, and improve the security performance of water storage type firing equipment；Meanwhile,Only with the design of a temperature sensor, the production cost of effectively save water storage type firing equipment.Referring to Fig. 7, in the present inventionIn embodiment, current heating rate acquiring unit 610 includes：

Current initial temperature value obtains subelement 611, for after water storage type water heater starts heating, obtaining current startingTemperature value T₁, and start timing；

Current end temp value obtains subelement 612, and for the time when timing default current heating-up time model is reachedEnclose t₀When, obtain current end temp value T₂；And

Current heating rate computation subunit 613, for according to current initial temperature value T₁, current end temp value T₂AndDefault current heating-up time scope t₀, calculate and obtain current heating rate V_T。

As a practice of the present invention, during water heater full water state, start heater, full water initial temperature value T_y1For 10 DEG C, when the time default full water heating-up time scope t of full water is reached_yFor 5min when, system obtain full water end temp valueT_y2For 75 DEG C, then full water heating rate V can be obtained by system-computed_Ty=(75-10)/5=13 DEG C/min.It is appreciated that at thisIn invention other embodiment, full water initial temperature value T_y1It can also be 15 DEG C, 18 DEG C, 20 DEG C, 25 DEG C etc., with specific reference to actual feelingsCondition selects to determine；Default full water heating-up time scope t_yCan also be for 2min, 3min, 4min, 6min etc., specifically can basisUser's request is adjusted；Full water end temp value T_y2Can also be 50 DEG C, 60 DEG C, 70 DEG C etc., specifically not limit.

Referring to Fig. 8, in embodiments of the present invention, the close judging unit 620 of heating rate includes：

First absolute value computation subunit 621, for according to current heating rate V_TWith default dry combustion method heating rate V_TeFull water heating rate V_Ty, calculate and obtain current heating rate V_TWith default dry combustion method heating rate V_TeFull water heating rate V_TyDifferenceThe absolute value △ V of value_Ty；

Second absolute value computation subunit 622, for according to current heating rate V_TWith default dry combustion method heating rate V_TeDry combustion method heating rate V_Te, calculate and obtain current heating rate V_TWith default dry combustion method heating rate V_TeDry combustion method heating rate V_TeDifferenceThe absolute value △ V of value_Te；

Absolute value comparing subunit 623, for relatively more current heating rate V_TWith default dry combustion method heating rate V_TeFull waterHeating rate V_TyThe absolute value △ V of difference_TyWith current heating rate V_TWith default dry combustion method heating rate V_TeDry combustion method heating rateV_TeThe absolute value △ V of difference_TeSize；

Dry combustion method judges subelement 624, for when current heating rate V_TWith default dry combustion method heating rate V_TeFull water heats upSpeed V_TyThe absolute value △ V of difference_TyMore than current heating rate V_TWith default dry combustion method heating rate V_TeDry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhen, then judge that the water storage type firing equipment is in dry-fire condition.

Referring to Fig. 9, in embodiments of the present invention, dry combustion method judges that subelement 624 includes：

Dry combustion method error judgment module 6241, for when current heating rate V_TWith default dry combustion method heating rate V_TeFull water literWarm speed V_TyThe absolute value △ V of difference_TyMore than current heating rate V_TWith default dry combustion method heating rate V_TeDry combustion method heating rateV_TeThe absolute value △ V of difference_TeWhen, judge current heating rate V_TWith default dry combustion method heating rate V_TeDry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhether default dry combustion method error amount is less than；

Dry combustion method determination module 6242, for when current heating rate V_TWith default dry combustion method heating rate V_TeDry combustion method heats up fastRate V_TeThe absolute value △ V of difference_TeDuring less than default dry combustion method error amount, then judge that water storage type firing equipment is in dry-fire condition.

Used as a preferred embodiment of the present invention, default dry combustion method error amount is 5 DEG C/min, now can precisely be judgedEquipment is, enough in dry-fire condition, to prevent the generation judged by accident, it is ensured that equipment normal work.In other embodiments of the present invention, in advanceIf dry combustion method error amount can also be 2 DEG C/min, 3 DEG C/min, 6 DEG C/min, 7 DEG C/min etc., specifically can be according to actual conditionsSelect.

In a practice of the present invention, such as current heating rate V_TFor 74 DEG C/min, default dry combustion method heats up fastRate V_TeFull water heating rate V_TyFor 15 DEG C/min, default dry combustion method heating rate V_TeDry combustion method heating rate V_TeFor 75 DEG C/min, in advanceIf dry combustion method error amount be 5 DEG C/min, then current heating rate V_TWith default dry combustion method heating rate V_TeFull water heating rate V_TyThe absolute value △ V of difference_TyFor (74-15)=59, current heating rate V_TWith default dry combustion method heating rate V_TeDry combustion method heats up fastRate V_TeThe absolute value △ V of difference_TeFor (75-74)=1 DEG C/min, △ V_Ty=59 are more than △ V_Te=1 DEG C/min, and △ V_TeFor=1 DEG C/min<Default dry combustion method error amount is 5 DEG C/min, then may determine that water storage type firing equipment in dry-fire condition, heatingEquipment heater can cut off the electricity supply at once, prevent equipment dry combustion method, improve equipment safety performance.

Figure 10 shows a kind of structure of water storage type firing equipment provided in an embodiment of the present invention, for convenience of description, onlyPart related to the present invention is shown.

Water storage type firing equipment 700 provided in an embodiment of the present invention includes：

Storage tank 710, for storing the water of water storage type firing equipment 700；

One temperature sensor 710, for detecting storage tank in water temperature；And

Dry combustion method decision maker 600, for receiving the temperature data of temperature sensor detection, and enters according to the temperature dataRow dry combustion method judges.

In embodiments of the present invention, dry combustion method decision maker 600 includes：

Current heating rate acquiring unit 610, for after the water storage type firing equipment starts heating, obtaining the storageWater type firing equipment is in default current heating-up time scope t₀Interior current heating rate V_T。

In one embodiment of the invention, default current heating-up time scope t₀Can be 1min, 1.5min,2min, 2.5min, specifically can be set according to actual conditions.

The close judging unit 620 of heating rate, for judging current heating rate V_THeat up Jie Jin default full waterSpeed V_TyOr Jie Jin default dry combustion method heating rate V_Te。

As one embodiment of the invention, default full water water heating rate V_TyWith default dry combustion method heating rate V_TeCanBeing that system is built-in；As another embodiment of the present invention, default full water heating rate V_TyHeat up with default dry combustion method fastRate V_TeCan be that User Defined is arranged.

As a practice of the present invention, default full water heating rate V_TyCan be 10 DEG C/min, 15 DEG C/min,20 DEG C/min etc.；Dry combustion method heating rate V_TeCan be 80 DEG C/min, 85 DEG C/min, 90 DEG C/min etc..It is appreciated that practiceIn, under normal circumstances, default full water heating rate V_TyIt is slower than default dry combustion method heating rate V_Te。

Dry combustion method identifying unit 630, for when current heating rate V_TWith default dry combustion method heating rate V_TeIt is close toWhen, then judge that water storage type firing equipment is in dry-fire condition.

In embodiments of the present invention, when current heating rate V_TWith default dry combustion method heating rate V_TeIt is such as current when closeHeating rate V_TFor 75 DEG C/min, default dry combustion method heating rate V_TyFor 80 DEG C/min, then judge that water storage type firing equipment is inNon- dry-fire condition, equipment can in time cut off the heater of water storage type firing equipment, in case equipment burns out.

In embodiments of the present invention, current heating rate acquiring unit 610 includes：

Current initial temperature value obtains subelement 611, for after water storage type water heater starts heating, obtaining current startingTemperature value T₁, and start timing；

Current end temp value obtains subelement 612, and for the time when timing default current heating-up time model is reachedEnclose t₀When, obtain current end temp value T₂；And

Current heating rate computation subunit 613, for according to current initial temperature value T₁, current end temp value T₂AndDefault current heating-up time scope t₀, calculate and obtain current heating rate V_T。

As a practice of the present invention, during water heater full water state, start heater, full water initial temperature value T_y1For 10 DEG C, when the time default full water heating-up time scope t of full water is reached_yFor 5min when, system obtain full water end temp valueT_y2For 75 DEG C, then full water heating rate V can be obtained by system-computed_Ty=(75-10)/5=13 DEG C/min.It is appreciated that at thisIn invention other embodiment, full water initial temperature value T_y1It can also be 15 DEG C, 18 DEG C, 20 DEG C, 25 DEG C etc., with specific reference to actual feelingsCondition selects to determine；Default full water heating-up time scope t_yCan also be for 2min, 3min, 4min, 6min etc., specifically can basisUser's request is adjusted；Full water end temp value T_y2Can also be 50 DEG C, 60 DEG C, 70 DEG C etc., specifically not limit.

In embodiments of the present invention, the close judging unit 620 of heating rate includes：

First absolute value computation subunit 621, for according to current heating rate V_TWith default full water heating rate V_Ty,Calculate and obtain current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_Ty；

Second absolute value computation subunit 622, for according to current heating rate V_TWith default dry combustion method heating rate V_Te,Calculate and obtain current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_Te；

Absolute value comparing subunit 623, for relatively more current heating rate V_TWith default full water heating rate V_TyDifferenceAbsolute value △ V_TyWith current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeSize；

Dry combustion method judges subelement 624, for when current heating rate V_TWith default full water heating rate V_TyDifference it is exhaustedTo value △ V_TyMore than current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhen, then judge storageWater type firing equipment is in dry-fire condition.

In embodiments of the present invention, dry combustion method judges that subelement 624 includes：

Dry combustion method error judgment module 6241, for when current heating rate V_TWith default full water heating rate V_TyDifferenceAbsolute value △ V_TyMore than current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhen, judge to work asFront heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhether default dry combustion method error amount is less than；

Dry combustion method determination module 6242, for when current heating rate V_TWith default dry combustion method heating rate V_TeDifference it is absoluteValue △ V_TeDuring less than default dry combustion method error amount, then judge that water storage type firing equipment is in dry-fire condition.

Used as a preferred embodiment of the present invention, default dry combustion method error amount is 5 DEG C/min, now can precisely be judgedEquipment is, enough in dry-fire condition, to prevent the generation judged by accident, it is ensured that equipment normal work.In other embodiments of the present invention, in advanceIf dry combustion method error amount can also be 2 DEG C/min, 3 DEG C/min, 6 DEG C/min, 7 DEG C/min etc., specifically can be according to actual conditionsSelect.

In a practice of the present invention, such as current heating rate V_TFor 74 DEG C/min, default full water heats up fastRate V_TyFor 15 DEG C/min, default dry combustion method heating rate V_TeFor 75 DEG C/min, default dry combustion method error amount is 5 DEG C/min, then whenFront heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyFor (74-15)=59, current heating rateV_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeFor (75-74)=1 DEG C/min, △ V_Ty=59 are more than △ V_Te=1 DEG C/min, and △ V_TeFor=1 DEG C/min<Default dry combustion method error amount is 5 DEG C/min, then may determine that water storage type is heatedEquipment is in dry-fire condition, and firing equipment heater can cut off the electricity supply at once, prevent equipment dry combustion method, improve device securityEnergy.

Dry combustion method decision maker provided in an embodiment of the present invention, by using a temperature sensor the current intensification is judgedSpeed V_TWhether Jie Jin default dry combustion method heating rate V_Te, when judging to be, then judge that water storage type firing equipment is in dry combustion method shapeState, the heater of firing equipment can in time carry out anti-dry process and such as cut off the electricity supply, sends alarm music, flicker alarm indicationThe process such as lamp, improves the security performance of water storage type firing equipment；Meanwhile, only with the design of a temperature sensor, effectivelySave the production cost of water storage type firing equipment.

Presently preferred embodiments of the present invention is the foregoing is only, not to limit the present invention, all essences in the present inventionAny modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.

Claims (16)

1. a kind of dry combustion method decision method, is applied to water storage type firing equipment, it is characterised in that methods described comprises the steps：

After the water storage type firing equipment starts heating, the water storage type firing equipment is obtained in the default current heating-up timeScope t₀Interior current heating rate V_T；

Judge current heating rate V_TJie Jin default full water heating rate V_TyOr Jie Jin default dry combustion method heating rateV_Te；

When current heating rate V_TWith default dry combustion method heating rate V_TeWhen close, then the water storage type heating is judgedEquipment is in dry-fire condition.

2. dry combustion method decision method as claimed in claim 1, it is characterised in that the acquisition water storage type firing equipment is in instituteState default current heating-up time scope t₀Interior described current heating rate V_TThe step of include：

After the water storage type firing equipment starts heating, current initial temperature value T is obtained₁, and start timing；

Default current heating-up time scope t is reached when the time of timing₀When, obtain current end temp value T₂；

According to the current initial temperature value T₁, current end temp value T₂And the default current heating-up time scopet₀, calculate and obtain current heating rate V_T。

3. dry combustion method decision method as claimed in claim 1, it is characterised in that the judgement current heating rate V_TIt is close toDefault full water heating rate V_TyOr Jie Jin default dry combustion method heating rate V_TeThe step of, including：

According to current heating rate V_TWith default full water heating rate V_Ty, calculate and obtain the current heating rateV_TWith default full water heating rate V_TyThe absolute value △ V of difference_Ty；

According to current heating rate V_TWith default dry combustion method heating rate V_Te, calculate and obtain the current heating rateV_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_Te；

Comparison current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyWork as with describedFront heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeSize；

When current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyWork as more than describedFront heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhen, then judge the water storage type heatingEquipment is in dry-fire condition.

4. dry combustion method decision method as claimed in claim 1, it is characterised in that default full water heating rate V_TyBy such asLower step is obtained：

In the water storage type firing equipment full water state, and start after heating, obtain full water initial temperature value T_y1, and start meterWhen；

Default full water heating-up time scope t is reached when the time of timing_yWhen, obtain full water end temp value T_y2；

According to the full water initial temperature value T_y1, full water end temp value T_y2And the default full water heating-up time scopet_y, calculate and obtain full water heating rate V_Ty。

5. dry combustion method decision method as claimed in claim 1, it is characterised in that default dry combustion method heating rate V_TeBy such asLower step is obtained：

In the water storage type firing equipment anhydrous state, and start after heating, obtain dry combustion method initial temperature value T_e1, and start meterWhen；

Default dry combustion method heating-up time scope t is reached when the time of timing_eWhen, obtain dry combustion method end temp value T_e2；

According to the dry combustion method initial temperature value T_e1, dry combustion method end temp value T_e2And the default dry combustion method heating-up time scopet_y, calculate and obtain dry combustion method heating rate V_Te。

6. dry combustion method decision method as claimed in claim 3, it is characterised in that when current heating rate V_TIt is default with describedFull water heating rate V_TyThe absolute value △ V of difference_TyMore than current heating rate V_TWith the default dry combustion method literWarm speed V_TeThe absolute value △ V of difference_TeWhen, then judge the step of water storage type firing equipment is in dry-fire condition, bagInclude：

When current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyMore than instituteState current heating rate V_TWith dry default burning heating rate V_TeThe absolute value △ V of difference_TeWhen, judge described currentHeating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhether miss less than default dry combustion methodDifference；

If the determination result is YES, then judge that the water storage type firing equipment is in dry-fire condition.

7. dry combustion method decision method as claimed in claim 1, it is characterised in that when current temperature speed V of the liter_TIt is default with describedFull water heating rate V_TyWhen close, then judge that the water storage type firing equipment is in non-dry-fire condition.

8. dry combustion method decision method as claimed in claim 3, it is characterised in that methods described also includes：

When current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyLess than instituteState current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhen, then judge the storageWater type firing equipment is in non-dry-fire condition；

It is described when current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyIt is littleIn current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhen, then judge instituteState water storage type firing equipment in non-dry-fire condition the step of, including：

When current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyLess than instituteState current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_TeWhen, judge described currentHeating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_TyWhether miss less than default full waterDifference；

If the determination result is YES, then judge that the water storage type firing equipment is in non-dry-fire condition.

9. a kind of dry combustion method decision maker, is applied to water storage type firing equipment, it is characterised in that described device includes：

Current heating rate acquiring unit, adds for after the water storage type firing equipment starts heating, obtaining the water storage typeHot equipment is in default current heating-up time scope t₀Interior current heating rate V_T；

The close judging unit of heating rate, for judging current heating rate V_TJie Jin default full water heating rate V_TyAlsoIt is Jie Jin default dry combustion method heating rate V_Te；And

Dry combustion method identifying unit, for when current heating rate V_TWith default dry combustion method heating rate V_TeWhen close, thenJudge that the water storage type firing equipment is in dry-fire condition.

10. dry combustion method decision maker as claimed in claim 9, it is characterised in that the current heating rate acquiring unit includes：

Current initial temperature value obtains subelement, for after the water storage type water heater starts heating, obtaining current starting temperatureAngle value T₁, and start timing；

Current end temp value obtains subelement, and for the time when timing default current heating-up time scope t is reached₀When, obtain current end temp value T₂；And

Current heating rate computation subunit, for according to the current initial temperature value T₁, current end temp value T₂AndDefault current heating-up time scope t₀, calculate and obtain current heating rate V_T。

11. dry combustion method decision makers as claimed in claim 9, it is characterised in that the close judging unit of the heating rate includes：

First absolute value computation subunit, for according to current heating rate V_TWith the default full water heating rateV_Ty, calculate and obtain current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_Ty；

Second absolute value computation subunit, for according to current heating rate V_TWith the default dry combustion method heating rateV_Te, calculate and obtain current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_Te；

Absolute value comparing subunit, for relatively more described current heating rate V_TWith default full water heating rate V_TyDifferenceThe absolute value △ V_TyWith current heating rate V_TWith default dry combustion method heating rate V_TeDifference it is described definitelyValue △ V_TeSize；

Dry combustion method judges subelement, for when current heating rate V_TWith default full water heating rate V_TyThe institute of differenceState absolute value △ V_TyMore than current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value of difference△V_TeWhen, then judge that the water storage type firing equipment is in dry-fire condition.

12. dry combustion method decision makers as claimed in claim 11, it is characterised in that the dry combustion method judges that subelement includes：

Dry combustion method error judgment module, for when current heating rate V_TWith default full water heating rate V_TyDifferenceThe absolute value △ V_TyMore than when front heating rate V_TWith default dry combustion method heating rate V_TeDifference it is described definitelyValue △ V_TeWhen, judge current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ of differenceV_TeWhether default dry combustion method error amount is less than；

Dry combustion method determination module, for when current heating rate V_TWith default dry combustion method heating rate V_TeDifference it is describedAbsolute value △ V_TeDuring less than the default dry combustion method error amount, then judge that the water storage type firing equipment is in dry-fire condition.

13. a kind of water storage type firing equipments, it is characterised in that the water storage type firing equipment includes：

Storage tank；

One temperature sensor for being used to detect the temperature of water in the storage tank；And

The temperature data of the temperature sensor detection is received, and the dry combustion method for carrying out dry combustion method judgement according to the temperature data judgesDevice, the dry combustion method judgment means include：

Current heating rate acquiring unit, adds for after the water storage type firing equipment starts heating, obtaining the water storage typeHot equipment is in default current heating-up time scope t₀Interior current heating rate V_T；

The close judging unit of heating rate, for judging current heating rate V_TJie Jin default full water heating rate V_TyAlsoIt is Jie Jin default dry combustion method heating rate V_Te；And

Dry combustion method identifying unit, for when current heating rate V_TWith default dry combustion method heating rate V_TeWhen close, thenJudge that the water storage type firing equipment is in dry-fire condition.

14. water storage type firing equipments as claimed in claim 13, it is characterised in that the current heating rate acquiring unit bagInclude：

Current initial temperature value obtains subelement, for after the water storage type firing equipment starts heating, obtaining current startingTemperature value T₁, and start timing；

Current end temp value obtains subelement, and for the time when timing default current heating-up time scope t is reached₀When, obtainTake current end temp value T₂；And

Current heating rate computation subunit, for according to the current initial temperature value T₁, current end temp value T₂AndDefault current heating-up time scope t₀, calculate and obtain current heating rate V_T。

15. water storage type firing equipments as claimed in claim 13, it is characterised in that the close judging unit bag of the heating rateInclude：

First absolute value computation subunit, for according to current heating rate V_TWith the default full water heating rateV_Ty, calculate and obtain current heating rate V_TWith default full water heating rate V_TyThe absolute value △ V of difference_Ty；

Second absolute value computation subunit, for according to current heating rate V_TWith the default dry combustion method heating rateV_Te, calculate and obtain current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ V of difference_Te；

Absolute value comparing subunit, for relatively more described current heating rate V_TWith default full water heating rate V_TyDifferenceThe absolute value △ V_TyWith current heating rate V_TWith default dry combustion method heating rate V_TeDifference it is described definitelyValue △ V_TeSize；

Dry combustion method judges subelement, for when current heating rate V_TWith default full water heating rate V_TyThe institute of differenceState absolute value △ V_TyMore than current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value of difference△V_TeWhen, then judge that the water storage type firing equipment is in dry-fire condition.

16. water storage type water heaters as claimed in claim 15, it is characterised in that the dry combustion method judges that subelement includes：

Dry combustion method error judgment module, for when current heating rate V_TWith default full water heating rate V_TyDifferenceThe absolute value △ V_TyMore than current heating rate V_TWith default dry combustion method heating rate V_TeDifference it is described definitelyValue △ V_TeWhen, judge current heating rate V_TWith default dry combustion method heating rate V_TeThe absolute value △ of differenceV_TeWhether default dry combustion method error amount is less than；

Dry combustion method determination module, for when current heating rate V_TWith default dry combustion method heating rate V_TeDifference it is describedAbsolute value △ V_TeDuring less than the default dry combustion method error amount, then judge that the water storage type firing equipment is in dry-fire condition.