Invention content
Based on above-mentioned present situation, the main purpose of the present invention is to provide a kind of lid of electric pressure cooker, can be in electric pressure cooking saucepanThe course of work in accurately measure local boiling temperature, so as to carry out High aititude judgement.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of lid of electric pressure cooker comprising control device and float assembly, the float assembly include float fulcrum pin, described floatingSub- axis is configured to rise under the effect of the pressure, and is resetted after pressure elimination, wherein the float fulcrum pin is equipped with triggeringElement, the electric pressure cooking saucepan, which covers, is additionally provided with the equal switch element and temperature-sensing element being connected with the control device, the floatAxis trigger element triggering switch element when rising.
Preferably, the trigger element includes magnetic element, and the switch element includes tongue tube or Hall element.
Preferably, the lid of electric pressure cooker includes cylinder cap and inner cover, and the float assembly is arranged on the cylinder cap, describedSwitch element setting interior is covered described.
Preferably, it is covered equipped with matching hole in described, the float fulcrum pin is at least partially situated at the matching hole when risingIn.
Preferably, the lid of electric pressure cooker further includes exhaust valve component.
Preferably, the exhaust valve component includes electromagnetic valve component and pressure limiting valve module, the electromagnetic valve component with it is describedControl device is connected.
Preferably, the float assembly further includes float seat, float cover and is mounted between the float seat and float coverElastic sealing element, the bottom of the float cover is equipped with first through hole, and the float fulcrum pin is slidably disposed in the elastic sealing elementIn the cavity constituted with the float seat.
Preferably, the top of the float seat is equipped with the second through-hole, and the upper end of the float fulcrum pin passes through second through-hole.
Preferably, the lower end of the float fulcrum pin is equipped with flange, and resetting spring is equipped between the flange and the float seat.
Preferably, the elastic sealing element is elastic packing silica gel.
Another aspect of the present invention is designed to provide a kind of electric pressure cooking saucepan comprising foregoing lid of electric pressure cooker.
The lid of electric pressure cooker of the present invention can accurately measure local boiling temperature in the course of work of electric pressure cooking saucepan,So as to carry out High aititude judgement, so that corresponding electric pressure cooking saucepan can determine different culinary art journeys according to different height above sea levelSequence reaches preferable culinary art effect.The float of preferred structure that the electric pressure cooking saucepan of the present invention covers is fully sealed, and gas is not in potIt can be discharged into the space inside pot cover by float, condensed water will not be generated inside pot cover, it will not be because cold after long-time serviceCondensate does not wash clean clearly and generates peculiar smell.
Specific implementation mode
As described in background technology part, electric pressure cooking saucepan product in the prior art can not realize that High aititude is examinedSurvey, thus the territorial scope for causing its applicable is limited, such as when its be transferred to from the area of a height above sea level it is anotherWhen the area of a height above sea level, the change of culinary art effect often occurs, and this change is typically the mouthfeel for leading to foodIt is deteriorated.
For this problem, the present invention is first, it is realized that the boiling point (being typically the boiling point of water) for passing through liquid in detection potTemperature can be converted into the height above sea level of region residing for electric pressure cooking saucepan.In general, the measurement of temperature is easy, for example, can be in potInterior (such as on the inside of pot cover) setting temperature-sensing element, to measure kettle temperature in real time.However, since kettle temperature almost connectsContinuous variation, for example, being first heated to boiling point from room temperature, enter upper pressure pressurize program immediately, and after upper pressure, kettle temperature afterIt is of continuing rising up to the matched value of pot inner pressure.Therefore, when temperature detection is carried out, that is, the signal of temperature-sensing element when is read,It is whether accurate for the boiling temperature measured, it is vital.In this regard, the work characteristics of present invention combination electric pressure cooking saucepan, woundExpect to the property made, the moment that can be above pressed in pot measures into trip temperature, and the vertical motion of float at this time can be used for being touchedHair.Since the pressure before upper pressure in pot is still equal to local atmospheric pressure, thus the kettle temperature value at the moment has not exceeded oftenThe boiling point values of pressure, therefore, the temperature measured with the moment is come to convert height above sea level be considered accurate.
Based on above-mentioned thinking, the present invention provides a kind of electric pressure cooking saucepan, in particular, provide a kind of for electric pressure cooking saucepanLid of electric pressure cooker so that corresponding electric pressure cooking saucepan can accurately measure local boiling temperature, so as to carry out High aititudeJudge.
Specifically, referring to Fig. 1-2, a kind of lid of electric pressure cooker of the invention comprising control device (such as control circuit,It is not shown) and float assembly 1.The float assembly 1 includes float fulcrum pin 101, and the float fulcrum pin 101 is configured to the work in pressureWith lower rise, and resetted after pressure elimination, that is, when the lid of electric pressure cooker of the present invention is with to electric pressure cooking saucepan, when in potWhen upper pressure, float fulcrum pin 101 can rise under the action of pot inner pressure, and before upper pressure or after pressure release, float fulcrum pin 101 is thenIn original position or self-resetting (such as falling to original position).The basic structure of the float assembly 1 can with have in the prior artFloat assembly it is identical.
In order to realize that the accurate measurement to boiling point, lid of electric pressure cooker of the invention are arranged to, the float fulcrum pin 101 is equipped withTrigger element 102, the electric pressure cooking saucepan, which covers, is additionally provided with the equal switch element 2 being connected with the control device and temperature-sensing element 3,The trigger element 102 triggers the switch element 2 when the rise of the float fulcrum pin 101.
Since switch element 2 is connected with control device, when switch element 2 is triggered the triggering of element 102, what is generated is defeatedGo out signal instantaneous transmission to control device, control device can read the measuring signal of temperature-sensing element 3 at this time, thus obtainThe temperature value of upper pressure moment, this temperature value are to be regarded as local boiling point values can easily to be rolled over according to the boiling point values in turnCalculate the height above sea level residing for locality.
Preferably, non-contact switch element can be selected in switch element 2, thus when float fulcrum pin 101 rises, trigger element102 can be completed triggering close to switch element 2.Preferably, the trigger element 102 includes magnetic element, the switch element 3Including tongue tube or Hall element.When magnetic element is close to tongue tube or Hall element, tongue tube or Hall element are correspondinglyOutput signal is generated, and is transmitted to control device.
Preferably, lid of electric pressure cooker of the invention further includes cylinder cap 4 and inner cover 5, and the float assembly 1 for example may be provided atOn the cylinder cap 4, the switch element 2 then may be provided on the inner cover 5.In the present invention, cylinder cap 4 refers to directly facing in potThe innermost layer lid in space, and inner cover 5 is then located at the top of cylinder cap 4, such as positioned at cylinder cap 4 and (as shown in Figs. 1-2, the pot cover of cover 6Outermost layer lid) between.In this case, trigger element 102 for example may be provided at the top of float fulcrum pin 101, such as embedded inIn its top end face (as shown in Figure 3), to ensure that the distance between switch element 2 is sufficiently small.
Preferably, the inner cover 5 is equipped with matching hole 51, and the float fulcrum pin 101 is at least partially situated at described when risingIn matching hole 51, as shown in Figure 2.
Due to inner cover be it is fixed (such as it is hinged by axis pin and pedestal, cannot turn relative to pot body after closing lidIt is dynamic), and cylinder cap (it is fixed together with cover) is to fasten, and not direct and pedestal is hinged, but can exist relative to inner coverRotation in a certain range, namely can in a certain range be rotated (for example, being equipped on cylinder cap relative to pot body in the case of closing lidGuide post, such as steel column inside cover and are then equipped with guide groove, and guide post is slidably disposed in the guide groove, when rotating pot-cover handleDrive cylinder cap rotation).When cannot uncap when cylinder cap is rotated to closed position, and be rotated to the position for being detached from and fasteningIt uncaps.
Therefore, when float assembly is arranged on cylinder cap, before float fulcrum pin rise, opposite can turn between inner cover and cylinder capIt is dynamic, to which lid of electric pressure cooker can be opened freely, and when pot cover is located at closed position and after float fulcrum pin rises, due to floatingSub- axis is at least partially situated in the matching hole of inner cover, which can play the role of axis pin at this time so that inner cover and cylinder capBetween can not relatively rotate, thus pot cover can not be rotated to from closed position be detached from fasten position, thus prevent in potPot cover is opened in the state of having pressure.
Preferably, as shown in Figs. 1-2, the lid of electric pressure cooker of the invention further includes exhaust valve component.Exhaust valve componentGas for being discharged in pot, such as cold air etc. in pot is discharged in temperature-rise period.That is, the lid of electric pressure cooker of the present invention is onlyIt the triggering that is switched using float and prevents from uncapping, without (float-controlled valve such as in the prior art is exhausted by floatLike that).
Preferably, the exhaust valve component includes electromagnetic valve component 7 and pressure limiting valve module 8, the electromagnetic valve component 7 and instituteControl device is stated to be connected.For example, electromagnetic valve component 7 is mounted on cylinder cap 4, electromagnetic valve component is connected with 9 He of exhaust pipe of pressure-limiting valveSolenoid valve vents pipe 10, wherein exhaust pipe of pressure-limiting valve 9 can form exhaust passage with gas in pot, be equipped on exhaust pipe of pressure-limiting valve 9Pressure limiting valve does not do exhaust under the pressure limiting valve normal operating conditions and uses (that is, normally closed), is only vented in the case of exception or superpressure.Under normal operating conditions, the break-make of the solenoid valve in electromagnetic valve component is controlled by control device, makes gas discharge or stagnant in potIt stays in pot.
Due to the present invention lid of electric pressure cooker use with the mutually independent air bleeding valve of float, float may not necessarily use traditionalFloat-controlled valve, but float is used cooperatively with solenoid valve, control device, is not done pressure front exhaust and is used, and only in pressure after upper pressureUnder the action of by float fulcrum pin jack up with prevent the in the case of of having pressure in pot uncap and (ensure safety) and realize High aititudeJudge and (adapts to the use condition in the case of Different Altitude), for this purpose, the present invention also provides a kind of float of preferred structure,The structure being fully sealed may be used, to prevent gas in pot from entering space in lid by float, to prevent peculiar smell.
As shown in Figure 3-4, the float assembly 1 of preferred structure of the invention further includes float other than including float fulcrum pin 101Seat 103, float cover 107 and the elastic sealing element 106 between the float seat and float cover, the float cover 107Bottom is equipped with first through hole, and the float fulcrum pin 101 is slidably disposed in the elastic sealing element 106 and is constituted with the float seat 103Cavity in.
For example, the float assembly of present embodiment is by float seat 103 and float cover 106, (such as screw thread between the two connectsConnect) it is mounted on cylinder cap 4 (as shown in Figs. 1-2), and be sealed by means of sealing ring 105.After installation is complete, float cover 107The first through hole in the space in pot, bottom passes through for the hot gas in pot, to which the pressure in pot may be made directly to bulletOn property sealing element 106 so that elastic sealing element 106 deforms and pushes up float fulcrum pin 101, to promote float fulcrum pin 101It rises.
Due to the sealing function of elastic sealing element 106 and sealing ring 105, the hot gas in pot will not enter in float assemblyPortion will not enter space in the lid of lid of electric pressure cooker, to effectively prevent similar heat through the edge of float assemblyThe phenomenon that gas generates peculiar smell with accumulating over a long period because being difficult to clean after condensation.
Preferably, the top of the float seat 103 is equipped with the second through-hole, and the upper end of the float fulcrum pin 101 passes through described theTwo through-holes.Second through-hole can play the role of float fulcrum pin 101 auxiliary and be oriented to, to prevent float fulcrum pin 101 in rise processIn deflect and influence triggering precision.
Preferably, the lower end of the float fulcrum pin 101 is equipped with flange, is equipped between the flange and the float seat 103 multiplePosition spring 105.Resetting spring 105 is for example set on float fulcrum pin 101, can assist the reset of float fulcrum pin 101 (i.e. after pressure releaseFall), prevent the deformation drag of elastic sealing element 106 from being had an impact to reset.
Preferably, the elastic sealing element 106 is elastic packing silica gel.For example, it is with substantially disc-shaped structure, dish typeIntermediate position have annular fold, then can be in determination to which annular fold can circumferentially trail under the effect of external forceStroke range in push float fulcrum pin 101 move upwards.
The course of work of float of the preferred structure of the present invention is：Work of the elastic packing silica gel in pressure under upper pressure conditionWith lower deformation, float fulcrum pin is jacked up, is inserted into the matching hole of inner cover, cylinder cap cannot rotate, and have in the state of pressure justIt cannot smoothly uncap；After pressure release, pot inner pressure disappears, and float fulcrum pin resets under the action of gravity and resetting spring, and elasticity is closeEnvelope silica gel resiles, and float restores normal condition, and after float fulcrum pin is fallen, float fulcrum pin is detached with the interior matching hole covered, cylinderLid can rotate, and can smoothly uncap.
The float of the preferred structure of the present invention can realize common voltage power in the case where not changing electric pressure cooker structureThe function of pot float, while avoiding before pressure that gas enters space in lid in pot, it is difficult to it cleans.
Lid of electric pressure cooker by means of float carry out height above sea level judgement the course of work be then：In electric pressure cooking saucepan pot upper pressure withAfterwards, float is jacked up by the deformation of elastic packing silica gel, the magnetic element of buoy top is close to positioned at the interior tongue tube coveredOr Hall element, tongue tube or Hall element detect action after signal, transmit signal to control device, while passing through topThe temperature of temperature-sensing element detection at this time, determines boiling point, the judgement of height above sea level is realized by different boiling points, judges to enter after height above sea levelDifferent cooking process meets the condition to work in Different Altitude (especially High aititude).For example, being set in control deviceBe equipped with from the corresponding cooking process of different boiling points, these cooking process are (different in heating duty ratio according to the difference of boiling pointPower heats), will be different on dwell time and exhaust mode.
When the float is matched with electromagnetic valve component to be worked, the course of work of lid of electric pressure cooker of the invention is：It is opened by control device control solenoid valve before being pressed on electric pressure cooking saucepan, solenoid valve opening passes through solenoid valve vents pipe and the external world laterCold air in pot is discharged the exhaust passage of formation；When the temperature-sensing element on cylinder cap detect temperature reach setting value (such asLess than 90 DEG C) after, control circuit controls solenoid valve and closes, and the pressure in pot rises, under the effect of the pressure float assembly bottomThe elastic packing silica gel in portion deforms, and float fulcrum pin is jacked up, and is inserted into the matching hole of inner cover, cylinder cap cannot rotate, and have pressureIt cannot smoothly uncap in the state of power；After pressure release, pot inner pressure disappearance float fulcrum pin is under the action of gravity and resetting springReset, elastic packing silica gel resiles, and float restores normal condition, after float fulcrum pin is fallen, float fulcrum pin with it is interior cover matchHole separation is closed, cylinder cap can be rotated, can smoothly be uncapped.
Those skilled in the art will readily recognize that under the premise of not conflicting, above-mentioned each advantageous manner can be freeGround combination, superposition.
It should be appreciated that above-mentioned embodiment is merely exemplary, and not restrictive, without departing from the basic of the present inventionIn the case of principle, those skilled in the art can be directed to the various apparent or equivalent modification or replace that above-mentioned details be madeIt changes, is all included in scope of the presently claimed invention.