CN113685861A - Range hood's wind pressure detection device and range hood thereof - Google Patents
Range hood's wind pressure detection device and range hood thereofDownload PDFInfo
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- CN113685861A CN113685861ACN202010424536.1ACN202010424536ACN113685861ACN 113685861 ACN113685861 ACN 113685861ACN 202010424536 ACN202010424536 ACN 202010424536ACN 113685861 ACN113685861 ACN 113685861A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
Translated fromChinese
Description
Technical Field
The invention belongs to the field of kitchen appliances, and particularly relates to a wind pressure detection device of a range hood and the range hood.
Background
Based on common household kitchen culture in China, the methods of stir-frying, steaming and smoldering and the like, inevitable harmful oil smoke particles and gases are generated in the cooking process, a large amount of oil smoke gases can be generated in a kitchen, a large amount of thermal oxidation decomposition products are seriously harmful to a heart-lung respiratory system, a heart-brain blood vessel circulatory system and an immune system, and the harm can be brought to the health of a cook. Therefore, the exhaust purification capability of the range hood is receiving general attention.
The untimely matching nature of oil smoke machine motor constant speed and oil smoke granule discharge efficiency and volume in the existing market is the key problem at present, and this kind of lampblack machine mode and user consumption experience have great limitation, and motor wind speed control is several level or variable frequency control mostly, and different gears can be in certain wind speed range, and after the size of artificial judgement oil smoke, user oneself selects the gear at random. Because the oil smoke speed and the oil smoke volume that different culinary art methods produced are different, there is the mismatching nature in the gear of artificial selection wind speed, and there is certain delay hysteresis nature in motor start-up and speed governing simultaneously. The gears are small, and the oil fume is not discharged in time, so that indoor air pollution is caused; the gear is bigger than normal, if under the not too much condition of oil smoke gas volume, will cause power consumption to increase, and frequent change gear both can cause culinary art person's fatigue, can shorten lampblack absorber button life-span simultaneously.
The traditional intelligent control and purification system of the range hood mostly adopts a sensor for detection, an electric signal is transmitted to a controller, the controller outputs a control strategy, and the control effect is poor. Based on different cooking environments and temperature conditions, the oil smoke gas has strong coupling, and the oil smoke gas diffusion irregularity and the complexity of the components of the oil smoke gas and particle mixture in the cooking process of the range hood bring hysteresis and larger errors to the sensor, thereby causing untimely oil smoke removal or increased energy consumption.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a wind pressure detection device of a range hood and the range hood thereof.
In order to solve the technical problems, the invention adopts the technical scheme that:
the invention provides a wind pressure detection device of a range hood, which comprises a wind pressure sampling mechanism and a pressure difference acquisition unit connected with the wind pressure sampling mechanism, wherein the wind pressure sampling mechanism comprises a first acquisition cavity with a first air inlet and a second acquisition cavity with a second air inlet, and the pressure difference acquisition unit acquires the pressure difference between the first acquisition cavity and the second acquisition cavity.
Further, the wind pressure sampling mechanism comprises a shell with a cavity, an isolation assembly is arranged in the shell, and the isolation assembly divides the cavity into a first acquisition cavity and a second acquisition cavity;
preferably, the first air inlet and the second air inlet are both arranged on the shell;
preferably, the opening direction of the first air inlet faces the air outlet direction of the smoke exhaust channel of the range hood, and the opening direction of the second air inlet is perpendicular to the air outlet direction of the smoke exhaust channel of the range hood.
Further, the wind pressure sampling mechanism comprises a first shell and a second shell connected with the first shell, a cavity is formed between the first shell and the second shell, a first collecting cavity is formed between the isolation assembly and the first shell, and a second collecting cavity is formed between the isolation assembly and the second shell;
preferably, the first air inlet is arranged on the first shell;
preferably, the second air inlet is arranged on the second housing.
Furthermore, the first shell comprises a bottom groove and an annular groove wall connected to the bottom groove, the isolation assembly is arranged at the joint of the bottom groove and the annular groove wall, one side of the isolation assembly and the bottom groove form the first acquisition cavity, and the other side of the second shell and the isolation assembly form the second acquisition cavity;
preferably, the junction of the bottom groove and the annular sidewall has a step portion on which the barrier member is disposed.
Furthermore, the isolation assembly comprises a deformable elastic pad and a transmission frame arranged on the elastic pad, a support column is arranged on the transmission frame, and a touch block matched with the differential pressure acquisition unit is arranged in the support column;
preferably, one side of the elastic cushion is provided with a bulge, and the transmission frame is provided with a through hole matched with the bulge;
preferably, a hollow part is arranged at the joint of the transmission frame and the support column.
Further, the cover is equipped with the sleeve on the support column, the support column have with tube-shape portion that the driving frame is connected and connect jaw in the tube-shape portion, the top of jaw is provided with the backstop portion that prevents the sleeve drops.
Further, the pressure difference acquisition unit is arranged on the shell, and a pressure measurement end of the pressure difference acquisition unit is matched with the touch block; or the pressure difference acquisition unit is arranged on the second shell, and the pressure measurement end of the pressure difference acquisition unit is matched with the touch block.
Furthermore, the second shell is clamped on the first shell, and an avoidance notch for avoiding the second air inlet is formed in the first shell;
preferably, an avoiding notch for avoiding the second air inlet is formed in the annular groove wall of the first shell.
Further, a supporting seat for supporting the wind pressure detection device is arranged at the bottom of the shell; or the bottom of the second shell is provided with a supporting seat for supporting the wind pressure detection device.
The invention also provides a range hood, which comprises the wind pressure detection device of the range hood.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
(1) the air pressure detection device of the invention obtains the pressure difference between the two collection cavities through the pressure difference obtaining unit, can directly reflect the dynamic pressure in the exhaust channel, namely the real air pressure in the exhaust channel, when the rotating speed of the motor in the range hood is adjustable, different air pressure values can correspond to different motor rotating speeds, the automatic speed regulation of the motor is realized, and the smoke exhaust effect of the range hood can be further improved;
(2) the range hood provided by the invention comprises the wind pressure detection device, the wind pressure data obtained by the wind pressure detection device is transmitted to the controller, so that the rotating speed of the motor is controlled, the control is convenient and simple, the intelligent speed regulation is automatically realized, the fatigue of a cooker caused by key operation is avoided, the range hood can intelligently select the motor working state of a motor system, the use effect of the range hood is also ensured, the timeliness, the high efficiency and the low energy consumption of smoke discharge are realized, and the kitchen oil smoke environment can be effectively improved.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic structural diagram of a wind pressure detecting device of a range hood of the present invention;
FIG. 2 is an exploded view of a wind pressure detecting device of the range hood of the present invention;
fig. 3 is a schematic structural diagram of the range hood of the present invention.
In the figure:
100. a first housing; 101. a first air inlet; 102. avoiding the notch; 103. a card interface; 200. a second housing; 201. a second air inlet; 202. a clamping buckle; 310. an elastic pad; 311. a protrusion; 320. a transmission frame; 321. a through hole; 322. a hollow-out section; 330. a support pillar; 331. a touch block; 340. a sleeve; 350. a supporting seat; 400. and a differential pressure obtaining unit.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Based on different cooking environments and temperature conditions, the oil smoke gas has strong coupling, and the oil smoke gas diffusion irregularity and the complexity of the components of the oil smoke gas and particle mixture in the cooking process of the range hood bring hysteresis and larger errors to the sensor. The oil smoke is not discharged in time or the energy consumption is increased. The untimely matching of the constant speed of the motor and the discharge efficiency and the quantity of oil smoke particles is the key point of the current problem, and the working mode and the user consumption experience of the range hood have great limitations.
The invention relates to a wind pressure detection device of a range hood, which comprises a wind pressure sampling mechanism and a pressuredifference acquisition unit 400 connected with the wind pressure sampling mechanism, wherein the wind pressure sampling mechanism comprises a first acquisition cavity with afirst air inlet 101 and a second acquisition cavity with asecond air inlet 201, and the pressuredifference acquisition unit 400 acquires the pressure difference formed between the first acquisition cavity and the second acquisition cavity; the differentialpressure obtaining unit 400 may be a differential pressure sensor.
Specifically, thefirst air inlet 101 and thesecond air inlet 201 are arranged at an air outlet of a smoke exhaust channel of a range hood, preferably, the opening direction of thefirst air inlet 101 faces the air outlet direction of the smoke exhaust channel of the range hood, and thesecond air inlet 201 is perpendicular to the air outlet direction of the smoke exhaust channel of the range hood, and of course, thefirst air inlet 101 and thesecond air inlet 201 can also be arranged in a smoke collection cavity, a smoke inlet of the range hood, and the like, and a person skilled in the art can select different installation positions according to actual conditions; when the air current that the motor produced passes through the exhaust passage,first air intake 101 just faces the air current, and it makes first collection intracavity portion produce higher atmospheric pressure, andsecond air intake 201 is the side and faces to or is back to the air current direction, and it makes second collection intracavity portion produce lower atmospheric pressure, will produce the pressure differential between first collection chamber and the second collection chamber like this, later gather by differential pressure sensor.
In addition, when the airflow is larger, the pressure difference measured by the pressure difference sensor is larger, and the airflow is smaller, the pressure difference is smaller; when the exhaust channel is blocked, the rotating speed of the motor is kept constant, the air speed exhausted by the exhaust channel is reduced, and the airflow is weakened, so that the pressure difference measured by the pressure difference sensor is reduced, whether the air path in the exhaust channel is smooth or not can be accurately measured, whether the oil smoke can be timely exhausted or not can be accurately measured, the smoke exhaust real-time performance of the range hood is improved, and the energy consumption is low.
According to the scheme of the invention, the wind pressure detection device can detect the pressure difference in the smoke exhaust channel through the wind power change in the smoke exhaust channel, the structure is simple, the volume is small and exquisite, the installation is convenient, the production cost is extremely low, a user can disassemble and wash the smoke exhaust channel by himself, and even in a high-oil environment such as a range hood, the blockage is not worried about.
Example one
As shown in fig. 1 and fig. 2, this embodiment is further defined by the above embodiments, where the wind pressure sampling mechanism includes afirst housing 100 and asecond housing 200 connected to thefirst housing 100, a cavity is formed between thefirst housing 100 and thesecond housing 200, a first collecting cavity is formed between the isolating assembly and thefirst housing 100, and a second collecting cavity is formed between the isolating assembly and thesecond housing 200; the differential pressure sensor is disposed on thesecond housing 200, and thesecond housing 200 is provided with a terminal interface connected to the differential pressure sensor.
Further, thefirst shell 100 includes a bottom groove and an annular groove wall connected to the bottom groove, the isolation component is disposed at a connection position of the bottom groove and the annular groove wall, one side of the isolation component and the bottom groove form the first collection cavity, and the other side of thesecond shell 200 and the isolation component form the second collection cavity; preferably, the junction of the bottom groove and the annular sidewall has a step portion on which the barrier member is disposed.
Further, thefirst air inlet 101 is disposed on thefirst casing 100; preferably, thefirst air inlet 101 is disposed on a bottom groove of thefirst housing 100; thesecond air inlet 201 is disposed on thesecond housing 200.
Specifically, thesecond casing 200 passes through the joint structure joint and is in on thefirst casing 100, the joint structure is including setting up 202 and the setting of joint buckle of the surface ofsecond casing 200 are injoint interface 103 on thefirst casing 100, preferably,joint interface 103 sets up on the annular groove wall offirst casing 100.
The isolation assembly comprises a deformableelastic pad 310 and atransmission frame 320 arranged on theelastic pad 310, wherein thetransmission frame 320 can move in the second collection cavity and is used for touching a pressure measurement end of the differential pressure sensor under the action of pressure so that the differential pressure sensor measures the pressure difference between the first collection cavity and the second collection cavity, furthermore, asupport column 330 is arranged on thetransmission frame 320, atouch block 331 is arranged in thesupport column 330, and thetouch block 331 is used for touching the pressure measurement end of the differential pressure sensor under the action of pressure; the supportingcolumn 330 is sleeved with asleeve 340, and thesleeve 340 is used for limiting the supportingcolumn 330 from continuing to press down after touching the pressure measuring end of the differential pressure sensor, so as to prevent the differential pressure sensor from being damaged; the supportingcolumn 330 has a cylindrical portion connected to thetransmission frame 320 and a claw connected to the cylindrical portion, and a stopper portion for preventing thesleeve 340 from falling off is provided at the top of the claw.
Further, one side of theelastic pad 310 is provided with aprotrusion 311, thetransmission frame 320 is provided with a throughhole 321 matched with theprotrusion 311, and thetransmission frame 320 is arranged on one side of theelastic pad 310 by a matching method of inserting theprotrusion 311 into the throughhole 321.
Further, ahollow portion 322 is disposed at a connection portion between the drivingframe 320 and the supportingpillar 330, so as to release air stored between theelastic pad 310 and the drivingframe 320, thereby preventing an error caused by inaccurate movement of the drivingframe 320.
The differential pressure sensor is arranged on thesecond shell 200, a terminal interface connected with the differential pressure sensor is arranged on the shell, a pressure measuring end of the differential pressure sensor is matched with thetouch block 331, thetransmission frame 320 drives the supportingcolumn 330 to move, thetouch block 331 can touch the pressure measuring end of the differential pressure sensor, and therefore the differential pressure sensor can measure the pressure between the first collecting cavity and the second collecting cavity.
In order to facilitate the installation of the wind pressure detecting device according to this embodiment, a supportingseat 350 for supporting the wind pressure detecting device is further disposed at the bottom of the housing.
Further, in order to enable thesecond housing 200 to be conveniently clamped in the first housing, an avoiding notch for avoiding the second air inlet is formed in the first housing; preferably, the avoiding notch is arranged on an annular groove wall of the first shell.
In the above solution of this embodiment, the housing of the wind pressure sampling mechanism is provided with anelastic pad 310 and atransmission frame 320 disposed on theelastic pad 310, theelastic pad 310 and thetransmission frame 320 divide the cavity of the housing into a first collection cavity and a second collection cavity, theelastic pad 310 can be deformed under the action of pressure, the drivingframe 320 can move in the second collecting cavity, a supportingcolumn 330 is arranged on the upper end surface of thetransmission frame 320, the pressure measuring end of the differential pressure sensor is matched with atouch block 331 in the supportingcolumn 330, the arrangement of the drivingframe 320 embedded in theelastic pad 310 enables the drivingframe 320 and theelastic pad 310 to be well isolated, the central line of the pressure measuring end is consistent with the central line of thetouch block 331, so that thetouch block 331 can be matched with the pressure measuring end to touch the pressure measuring end of the differential pressure sensor to obtain pressure difference.
Example two
The present embodiment is different from the first embodiment in that: the wind pressure sampling mechanism comprises a shell with a cavity, an isolation assembly is arranged in the shell, and the isolation assembly divides the cavity into a first acquisition cavity and a second acquisition cavity; thefirst air inlet 101 and thefirst air inlet 201 are both disposed on the housing.
Wherein, the isolation component includes deformable'scushion 310 and sets up drivingframe 320 on thecushion 310, be provided withsupport column 330 on the drivingframe 320, be provided with in thesupport column 330 andtouch piece 331, and the cover is equipped withsleeve 340 on thissupport column 330,support column 330 have with the tube-shape portion that drivingframe 320 is connected and connect claw in the tube-shape portion, the top of claw is provided with the prevention the backstop portion thatsleeve 340 drops.
Further, aprotrusion 311 is disposed on one side of theelastic pad 310, and a throughhole 321 matched with theprotrusion 311 is disposed on thetransmission frame 320.
Further, ahollow portion 322 is disposed at a connection position of thetransmission frame 320 and the supportingcolumn 330.
Further, the differential pressure sensor is disposed on the housing, a terminal interface connected to the differential pressure sensor is disposed on the housing, and a pressure measuring end of the differential pressure sensor is matched with thetouch block 331.
In order to facilitate the installation of the wind pressure detecting device according to this embodiment, a supportingseat 350 for supporting the wind pressure detecting device is further disposed at the bottom of the housing.
EXAMPLE III
As shown in fig. 3, the invention further provides a range hood, which comprises the wind pressure detection device of the range hood in the above scheme. This range hood's wind pressure detection device can detect the actual wind pressure size of exhaust channel's assigned position, controls the rotational speed of range hood motor according to the actual wind pressure size condition that detects, realizes better smoke exhaust effect.
The range hood comprises a controller, a motor and a wind pressure detection device, wherein the motor and the wind pressure detection device are respectively in signal connection with the controller, the controller is electrically connected with a pressure difference sensor of the wind pressure detection device to acquire a detection signal of the wind pressure detection device, so that the motor rotating speed of the motor is controlled according to the detection signal of the wind pressure detection device, and the reaction speed and the sensitivity of the range hood can be improved.
When the range hood works, the motor rotating speed of the range hood can be adjusted in a self-adaptive mode, the motor rotating speed of the range hood is set to be a plurality of gears, and the motor rotating speed is automatically adjusted through the wind pressure detection device. The invention can effectively adjust the rotating speed of the motor in real time according to the change of the air pressure in the flue, realizes the air pressure following movement, improves the smoke exhaust effect, makes the product more intelligent and is convenient for the use of consumers.
Example 4
The invention also discloses a control method of the range hood, the range hood comprises a controller, and a motor and a wind pressure detection device which are respectively in signal connection with the controller, and the control method of the range hood comprises the following steps:
s1, starting the range hood;
s2, the controller acquires a wind pressure value detected by the wind pressure detection device and converts the acquired actual wind pressure value into a wind speed value;
s3, judging whether the current wind speed value is within the preset wind speed range, if not, performing S4, otherwise, performing S5;
s4, the controller controls and increases the current of the motor to increase the rotating speed of the motor, and further increases the wind speed of the exhaust channel of the range hood;
s5, judging whether the motor current is larger than a preset threshold value, if so, performing a step S6; if not, not performing subsequent control operation;
and S6, reducing the current of the motor to reduce the rotating speed of the motor, thereby reducing the wind speed of the exhaust channel of the range hood.
In the scheme of the invention, the actual wind speed of the range hood needs to be detected in real time, therefore, a wind pressure detection device is added on the air outlet of the exhaust channel of the range hood to obtain the actual full pressure and static pressure of the air outlet, the static pressure is subtracted from the full pressure to obtain the dynamic pressure, the dynamic pressure is converted into the actual wind speed according to the dynamic pressure equation, and the actual wind speed of the range hood is adjusted in real time by intelligently controlling the rotating speed of the motor through the controller according to the comparison between the actual wind speed and the set wind speed range.
The range hood can transmit the air pressure acquired by the air pressure detection device to the controller, and the controller controls the rotating speed of the motor, so that intelligent speed regulation is automatically realized, and the timeliness, high efficiency and low energy consumption of smoke discharge are realized.
The above embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention in any way, and although the present invention has been disclosed by the preferred embodiments, it is not intended to limit the present invention, and those skilled in the art can make various changes and modifications to the equivalent embodiments by using the technical contents disclosed above without departing from the technical scope of the present invention, and the embodiments in the above embodiments can be further combined or replaced, but any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.
Claims (10)
1. The utility model provides a range hood's wind pressure detection device which characterized in that: including wind pressure sampling mechanism and the pressure differential acquisition unit who is connected with wind pressure sampling mechanism, wind pressure sampling mechanism gathers the chamber including the first chamber of gathering that has first air intake and the second that has the second air intake, pressure differential acquisition unit acquires the pressure differential between first chamber of gathering and the second acquisition chamber.
2. The wind pressure detecting device of the range hood according to claim 1, wherein: the wind pressure sampling mechanism comprises a shell with a cavity, an isolation assembly is arranged in the shell, and the isolation assembly divides the cavity into a first acquisition cavity and a second acquisition cavity;
preferably, the first air inlet and the second air inlet are both arranged on the shell;
preferably, the opening direction of the first air inlet faces the air outlet direction of the smoke exhaust channel of the range hood, and the opening direction of the second air inlet is perpendicular to the air outlet direction of the smoke exhaust channel of the range hood.
3. The wind pressure detecting device of the range hood according to claim 1, wherein: the wind pressure sampling mechanism comprises a first shell and a second shell connected with the first shell, a cavity is formed between the first shell and the second shell, a first acquisition cavity is formed between the isolation assembly and the first shell, and a second acquisition cavity is formed between the isolation assembly and the second shell;
preferably, the first air inlet is arranged on the first shell;
preferably, the second air inlet is arranged on the second housing.
4. The wind pressure detecting device of the range hood according to claim 3, wherein: the first shell comprises a bottom groove and an annular groove wall connected to the bottom groove, the isolation assembly is arranged at the joint of the bottom groove and the annular groove wall, one side of the isolation assembly and the bottom groove form the first acquisition cavity, and the other side of the second shell and the isolation assembly form the second acquisition cavity;
preferably, the junction of the bottom groove and the annular sidewall has a step portion on which the barrier member is disposed.
5. The wind pressure detecting device of the range hood according to claim 2 or 3, wherein: the isolation assembly comprises a deformable elastic pad and a transmission frame arranged on the elastic pad, a support column is arranged on the transmission frame, and a touch block matched with the differential pressure acquisition unit is arranged in the support column;
preferably, one side of the elastic cushion is provided with a bulge, and the transmission frame is provided with a through hole matched with the bulge;
preferably, a hollow part is arranged at the joint of the transmission frame and the support column.
6. The wind pressure detecting device of the range hood according to claim 5, wherein: the cover is equipped with the sleeve on the support column, the support column have with tube-shape portion that the driving frame is connected and connect jack catch in the tube-shape portion, the top of jack catch is provided with the backstop portion that prevents the sleeve drops.
7. The wind pressure detecting device of the range hood according to claim 5, wherein: the pressure difference acquisition unit is arranged on the shell, and a pressure measuring end of the pressure difference acquisition unit is matched with the touch block; or the pressure difference acquisition unit is arranged on the second shell, and the pressure measurement end of the pressure difference acquisition unit is matched with the touch block.
8. The wind pressure detecting device of the range hood according to claim 3, wherein: the second shell is clamped on the first shell, and an avoidance notch for avoiding the second air inlet is formed in the first shell;
preferably, an avoiding notch for avoiding the second air inlet is formed in the annular groove wall of the first shell.
9. The wind pressure detecting device of the range hood according to claim 2 or 3, wherein: the bottom of the shell is provided with a supporting seat for supporting the wind pressure detection device; or the bottom of the second shell is provided with a supporting seat for supporting the wind pressure detection device.
10. A range hood, its characterized in that: a wind pressure detecting apparatus comprising the range hood as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010424536.1ACN113685861A (en) | 2020-05-19 | 2020-05-19 | Range hood's wind pressure detection device and range hood thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010424536.1ACN113685861A (en) | 2020-05-19 | 2020-05-19 | Range hood's wind pressure detection device and range hood thereof |
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|---|---|
| CN113685861Atrue CN113685861A (en) | 2021-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010424536.1APendingCN113685861A (en) | 2020-05-19 | 2020-05-19 | Range hood's wind pressure detection device and range hood thereof |
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- 2020
- 2020-05-19CNCN202010424536.1Apatent/CN113685861A/enactivePending
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| US5763787A (en)* | 1996-09-05 | 1998-06-09 | Rosemont Inc. | Carrier assembly for fluid sensor |
| CN2717001Y (en)* | 2004-03-23 | 2005-08-10 | 北京吉思电气有限公司 | Gravity assistance type air pressure relay |
| CN204332823U (en)* | 2015-01-09 | 2015-05-13 | 王海峰 | New non-contact wind pressure switch |
| CN205481201U (en)* | 2015-12-21 | 2016-08-17 | 思达文电器（深圳）有限公司 | Intelligent lampblack absorber |
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