CN113324269A - Automatic wind power adjusting device and method for kitchen range hood - Google Patents

Automatic wind power adjusting device and method for kitchen range hood Download PDF

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Publication number
CN113324269A
CN113324269A CN202110733109.6A CN202110733109A CN113324269A CN 113324269 A CN113324269 A CN 113324269A CN 202110733109 A CN202110733109 A CN 202110733109A CN 113324269 A CN113324269 A CN 113324269A
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CN
China
Prior art keywords
wind
fan
range hood
wind power
wind pressure
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Pending
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CN202110733109.6A
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Chinese (zh)
Inventor
刘丰
王鑫
李伟
黄卫斌
廖信
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Marssenger Kitchenware Co Ltd
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Marssenger Kitchenware Co Ltd
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Application filed by Marssenger Kitchenware Co Ltd filed Critical Marssenger Kitchenware Co Ltd
Priority to CN202110733109.6A priority Critical patent/CN113324269A/en
Publication of CN113324269A publication Critical patent/CN113324269A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2021Arrangement or mounting of control or safety systems

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  • Engineering & Computer Science (AREA)
  • Ventilation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)

Abstract

The invention provides a device and a method for automatically adjusting wind power of a range hood, and belongs to the technical field of range hoods. This kitchen cigarette machine wind-force automatic regulating apparatus includes wind pressure sensor, controller and fan, wind pressure sensor sets up the air intake at the kitchen cigarette machine and perpendicular with the wind direction, wind pressure sensor is connected with the signal input part electricity of controller, the fan setting is inside the kitchen cigarette machine, the instruction output end electricity of fan and controller is connected, the controller judges current kitchen cigarette machine front side air density increase/reduction according to the wind pressure data that wind pressure sensor sent, and control fan carries out corresponding upshift/downshift operation. The device is simple in structure and convenient to use, the method is simple and convenient in steps, sensitive in detection, capable of achieving automatic gear adjustment of the kitchen range hood and good in practicability.

Description

Automatic wind power adjusting device and method for kitchen range hood
Technical Field
The invention belongs to the technical field of kitchen range hoods, and particularly relates to a kitchen range hood wind power automatic adjusting device and method.
Background
The kitchen ventilator is a kitchen appliance for purifying kitchen environment, it is installed above kitchen range, and is used for collecting waste produced by combustion and oil fume harmful to human body produced in the course of cooking, and discharging the waste and oil fume out of the room so as to attain the goal of purifying indoor air. When a consumer cooks in a kitchen, a large amount of oil smoke is generated, and the kitchen range hood discharges the oil smoke outdoors. When cooking, when the cooking oil smoke volume of a user is suddenly increased, the air can be mixed with oil smoke mixture to cause the density of the air to rise, at the moment, if the wind power of a kitchen range hood is not enough to exhaust the generated oil smoke, a large amount of oil smoke is diffused in the front of the kitchen range hood, the feeling of the user can be obviously influenced, even the adverse consequences of lacrimation, choking and the like of the user can be caused seriously, the wall of the kitchen can be condensed and accumulated with a large amount of oil smoke stains in the past, and the experience effect of the user is greatly reduced.
Disclosure of Invention
In view of the above, the invention provides an automatic wind power adjusting device and method for a kitchen range hood, so as to solve the problem that the kitchen range hood in the prior art cannot timely exhaust a large amount of suddenly increased oil smoke.
The invention provides an automatic wind power adjusting device of a kitchen range hood, which comprises a wind pressure sensor, a controller and a fan, and is characterized in that the wind pressure sensor is arranged at an air inlet of the kitchen range hood and is vertical to the wind direction, the wind pressure sensor is electrically connected with a signal input end of the controller, the fan is arranged in the kitchen range hood, the fan is electrically connected with an instruction output end of the controller, the controller judges the increase/decrease of the current air density at the front side of the kitchen range hood according to wind pressure data sent by the wind pressure sensor, and controls the fan to perform corresponding gear-up/gear-down operation.
In the automatic wind power adjusting device for the kitchen range hood, the wind power gears of the fan at least comprise two gears, each wind power gear corresponds to a high-level threshold and a low-level threshold, and the controller controls the fan to execute a gear-up operation when the received wind pressure data exceeds the high-level threshold; and the controller controls the fan to perform downshift operation when the received wind pressure data is lower than a low threshold value.
In the automatic wind power adjusting device for the kitchen range hood, the high-level threshold/the low-level threshold corresponding to each wind power gear of the fan are arranged in an arithmetic progression from low to high according to the wind power gear.
In foretell kitchen cigarette machine wind-force automatic regulating apparatus, wind pressure sensor is including feeling wind piece, linking arm, sensitive bars, fixed plate and casing, the fixed plate sets up in the casing, it is mutually perpendicular with the air inlet direction of kitchen cigarette machine air intake to feel the wind piece, feel the wind piece pass through the linking arm with the fixed plate is connected, sensitive bars laminating is in linking arm one side, the linking arm is the flexure strip, sensitive bars both ends are connected with the controller electricity behind the fixed plate.
In foretell kitchen cigarette machine wind-force automatic regulating apparatus, the casing includes shell and apron, set up the groove of stepping down that supplies the linking arm to wear out on the shell, the fixed plate is installed in the shell, the apron lock will on the shell the fixed plate encapsulation.
In the automatic wind power adjusting device for the kitchen ventilator, the connecting arm is a strip-shaped thin sheet, two ends of the connecting arm in the length direction are correspondingly connected with the wind sensing sheet and the fixing plate respectively, the length of the connecting arm is 5-10mm, and the width of the connecting arm is 2-5 mm.
In the automatic wind power adjusting device for the kitchen range hood, the fixing plate is a PCB, a signal amplifying circuit is recorded on the PCB, two ends of the sensitive grid are connected with the signal input side of the signal amplifying circuit, and the signal output side of the signal amplifying circuit is connected with the controller.
In a second aspect, the invention also provides an automatic wind power adjusting method for a kitchen range hood, which comprises the following steps: acquiring air pressure data of an air inlet of a kitchen ventilator in real time through an air pressure sensor; comparing and judging the collected wind pressure data with a preset wind pressure threshold corresponding to the current wind power gear of the fan through a controller, and determining whether the front air density of the kitchen range hood is increased or decreased; the controller outputs a control instruction to the fan when confirming that the air density at the front side of the kitchen range hood is increased, and the fan automatically increases the wind power gear after receiving the control instruction; the controller outputs a control instruction to the fan when confirming that the air density at the front side of the kitchen range hood is reduced, and the fan automatically reduces the wind power gear after receiving the control instruction.
In the above automatic wind power adjusting method for a kitchen range hood, the controlling confirms that the air density of the front side of the kitchen range hood is suddenly increased/decreased by the steps of: the preset wind pressure threshold corresponding to the current wind power gear of the fan comprises a high threshold and a low threshold, when the wind pressure data sent by the wind sensor exceeds the high threshold, the increase of the air density at the front side of the kitchen range hood is indicated, the current wind power gear of the fan is too low, and the controller controls the fan to be shifted up; when the wind pressure data sent by the wind sensor is lower than a low threshold value, the density of air on the front side of the kitchen range hood is reduced, the current wind power gear of the fan is too high, and the controller controls the fan to downshift.
In the above automatic wind power adjusting method for the kitchen range hood, the high threshold and the low threshold corresponding to each wind power gear are obtained by the following steps: under the condition of a laboratory, a fan is set at a certain gear, then the change of wind pressure data collected by a wind pressure sensor under different oil smoke concentrations is tested, and the degree of oil smoke amount is defined by calibrating the numerical value of the change of the wind pressure data or the proportion of the numerical value of the change of the wind pressure data to the initial state.
Compared with the prior art, this kitchen cigarette machine wind-force automatic regulating apparatus has following advantage: the automatic adjustment of the fan gear of the kitchen range hood is realized, and the influence of sudden oil smoke change, especially sudden increase of oil smoke, on the body of a user during cooking can be effectively avoided; the use feeling of the user is improved, meanwhile, the energy is saved, and the cooking cost is reduced.
Drawings
Fig. 1 is a schematic circuit diagram of an automatic wind power adjusting device of a range hood in a kitchen according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a wind pressure sensor according to the embodiment.
Fig. 3 is a schematic circuit diagram of an automatic wind power adjusting device of a range hood for a kitchen according to another embodiment of the present invention.
FIG. 4 is a flow chart of an automatic wind power adjustment method of the kitchen range hood according to the embodiment.
In the figure, 1, a wind pressure sensor; 1a, a wind sensing sheet; 1b, a connecting arm; 1c, a sensitive grid; 1d, fixing plates; 1e, a housing; 1e1, a relief groove; 1f, a cover plate; 2. a controller; 3. a fan; 4. an amplifying circuit.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
The first embodiment is as follows:
as shown in figure 1, the automatic wind power adjusting device for the kitchen range hood comprises a wind pressure sensor 1, a controller 2 and a fan 3, wherein the wind pressure sensor 1 is arranged at an air inlet of the kitchen range hood and is vertical to the wind direction, the wind pressure sensor 1 is electrically connected with a signal input end of the controller 2, the fan 3 is arranged inside the kitchen range hood, and the fan 3 is electrically connected with an instruction output end of the controller 2. The wind gears of the fan 3 at least comprise two gears, each wind gear corresponds to a high threshold and a low threshold, and the high threshold/the low threshold corresponding to each wind gear of the fan 3 are arranged in an arithmetic progression from low to high according to the wind gears. In this embodiment, the controller 2 adopts a 51-series single chip microcomputer or an industrial PLC to realize real-time receiving and processing of signals of the wind pressure sensor 1.
Specifically, referring to fig. 2, the wind pressure sensor 1 includes a wind sensing sheet 1a, a connecting arm 1b, a sensitive grid 1c, a fixing plate 1d and a housing, the fixing plate 1d is disposed in the housing, the wind sensing sheet 1a is perpendicular to the air inlet direction of the air inlet of the kitchen ventilator, the wind sensing sheet 1a is connected with the fixing plate 1d through the connecting arm 1b, the sensitive grid 1c is attached to one side of the connecting arm 1b, and two ends of the sensitive grid 1c are electrically connected with the controller 2 through the fixing plate 1 d. The casing includes shell 1e and apron 1f, offers the groove of stepping down 1e1 that supplies linking arm 1b to wear out on the shell 1e, and fixed plate 1d installs in shell 1e, and apron 1f lock encapsulates fixed plate 1d on shell 1 e. The body is fixed on the frame of the air inlet of the kitchen range hood through the modes of screws, rivets, clamping and the like, and can be specifically selected and implemented according to actual conditions, and the body is preferably fixed by adopting the screws. It should be noted that, the casing and the air-sensitive sheet 1a are made of insulating materials, and the air-sensitive sheet 1a is made of a material with a lower density, such as a plastic plate, an acrylic plate, etc., so as to avoid the influence of the mass of the air-sensitive sheet 1a on the measurement result.
The connecting arm 1b is an elastic strip-shaped sheet made of plastic or rubber, and two ends of the connecting arm in the length direction are correspondingly connected with the wind sensing sheet 1a and the fixing plate 1d respectively. The length of the connecting arm 1b is 5-10mm, the width is 2-5mm, and the thickness is 0.5-1.5mm, preferably, the length of the connecting arm 1b is 8mm, the width is 2mm, and the thickness is 0.5 mm.
When the wind sensing piece 1a senses wind force to bend the connecting arm 1b, the sensitive grid 1c is deformed, the resistance value of the sensitive grid 1c is changed and is captured by the controller 2, the controller 2 is changed to calculate corresponding wind pressure data, and then the controller 2 compares the wind pressure data with a high threshold or a low threshold corresponding to a preset wind unit of the fan 3: controlling the fan 3 to execute the upshifting operation when the received wind pressure data exceeds a high threshold value; the controller 2 controls the fan 3 to perform a downshift operation when the received wind pressure data is lower than the lower threshold.
Example two:
as shown in fig. 3, in this embodiment, as a further preferable scheme, a PCB board is used as the fixing board 1d, a signal amplifying circuit 4 is recorded on the PCB board, two ends of the sensitive gate 1c are connected to a signal input side of the signal amplifying circuit 4, and a signal output side of the signal amplifying circuit 4 is connected to the controller 2. Therefore, the slight resistance value change of the sensitive grid 1c can be captured by the controller 2 and correspondingly processed, so that the detection sensitivity of the device can be obviously improved, and the automatic adjustment effect of the device is improved. The amplifying circuit 4 is a common circuit, and therefore is not described in detail.
Example three:
as shown in fig. 4, the invention also provides an automatic wind power adjusting method for a kitchen range hood, which comprises the following steps:
step 101, collecting wind pressure data of an air inlet of a kitchen range hood in real time through a wind pressure sensor.
And 102, comparing and judging the collected wind pressure data with a preset wind pressure threshold corresponding to the current wind power gear of the fan through the controller, and determining whether the air density at the front side of the kitchen range hood is increased/decreased. In the step, the preset wind pressure threshold corresponding to the current wind gear of the fan comprises a high threshold and a low threshold. The controller compares the received wind pressure data with the high threshold and the low threshold respectively.
And 103, judging whether the wind pressure data is lower than a low threshold value. If yes, indicating that the front air density of the kitchen range hood is reduced and the current wind power gear of the fan is too high, and entering step 1031; if not, return to step 101.
And step 1031, controlling the fan to shift down by the controller so as to save energy.
And 104, judging whether the wind pressure data is higher than a high threshold value. If yes, indicating that the air density at the front side of the kitchen range hood is increased and the current wind power gear of the fan is too low, and entering step 1041; if not, return to step 101.
And 1041, controlling the fan to shift up by the controller to quickly exhaust the oil smoke.
The high-level threshold value and the low-level threshold value corresponding to each wind gear are obtained through the following steps: under the condition of a laboratory, a fan is set at a certain gear, then the change of wind pressure data collected by a wind pressure sensor under different oil smoke concentrations is tested, and the degree of oil smoke amount is defined by calibrating the numerical value of the change of the wind pressure data or the proportion of the numerical value of the change of the wind pressure data to the initial state.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims (10)

1. The utility model provides a kitchen cigarette machine wind-force automatic regulating apparatus, includes wind pressure sensor (1), controller (2) and fan (3), its characterized in that, wind pressure sensor (1) sets up the air intake at the kitchen cigarette machine and perpendicular with the wind direction, wind pressure sensor (1) with the signal input part electricity of controller (2) is connected, fan (3) set up inside the kitchen cigarette machine, fan (3) with the instruction output end electricity of controller (2) is connected, controller (2) judge current kitchen cigarette machine front side air density according to the wind pressure data that wind pressure sensor (1) sent and increase/reduce to control fan (3) carry out corresponding gear-lifting/downshift operation.
2. The automatic wind power adjusting device of the kitchen ventilator according to claim 1, wherein the wind power level of the fan (3) comprises at least two levels, each wind power level corresponds to a high threshold and a low threshold, and the controller (2) controls the fan (3) to perform an upshift operation when the received wind pressure data exceeds the high threshold; the controller (2) controls the fan (3) to perform a downshift operation when the received wind pressure data is lower than a low threshold.
3. The automatic wind power adjusting device of the kitchen range hood according to claim 2, wherein the high threshold/low threshold corresponding to each wind power gear of the fan (3) is arranged in an arithmetic progression from low to high according to the wind power gear.
4. The automatic wind power adjusting device for the kitchen range hood according to claim 1, 2 or 3, wherein the wind pressure sensor (1) comprises a wind sensing piece (1a), a connecting arm (1b), a sensitive grid (1c), a fixing plate (1d) and a shell, the fixing plate (1d) is arranged in the shell, the wind sensing piece (1a) is perpendicular to the wind inlet direction of the air inlet of the kitchen range hood, the wind sensing piece (1a) is connected with the fixing plate (1d) through the connecting arm (1b), the sensitive grid (1c) is attached to one side of the connecting arm (1b), the connecting arm (1b) is an elastic piece, and two ends of the sensitive grid (1c) are electrically connected with the controller (2) after passing through the fixing plate (1 d).
5. The automatic wind power adjusting device of the kitchen ventilator according to claim 4, wherein the shell comprises a shell (1e) and a cover plate (1f), the shell (1e) is provided with a yielding groove (1e1) for the connecting arm (1b) to penetrate out, the fixing plate (1d) is installed in the shell (1e), and the cover plate (1f) is buckled on the shell (1e) to encapsulate the fixing plate (1 d).
6. The automatic wind power adjusting device of the kitchen ventilator according to claim 4, wherein the connecting arm (1b) is a strip-shaped thin sheet, two ends of the connecting arm (1b) in the length direction are respectively connected with the wind sensing sheet (1a) and the fixing plate (1d) correspondingly, the length of the connecting arm (1b) is 5-10mm, and the width of the connecting arm (1b) is 2-5 mm.
7. The automatic wind power adjusting device for the kitchen range hood according to claim 4, wherein the fixing plate (1d) is a PCB (printed circuit board), a signal amplifying circuit (4) is recorded on the PCB, two ends of the sensitive grid (1c) are connected with a signal input side of the signal amplifying circuit (4), and a signal output side of the signal amplifying circuit (4) is connected with the controller (2).
8. An automatic wind power adjusting method for a kitchen range hood, the method comprising: the method comprises the steps that wind pressure data of an air inlet of a kitchen range hood are collected in real time through a wind pressure sensor (1); comparing and judging the collected wind pressure data with a preset wind pressure threshold corresponding to the current wind power gear of the fan (3) through the controller (2), and determining whether the front air density of the kitchen range hood is increased/decreased; the controller (2) outputs a control instruction to the fan (3) when confirming that the air density at the front side of the kitchen range hood is increased, and the fan (3) automatically increases the wind power gear after receiving the control instruction; the controller (2) outputs a control instruction to the fan (3) when confirming that the air density at the front side of the kitchen range hood is reduced, and the fan (3) automatically reduces the wind power gear after receiving the control instruction.
9. The automatic wind power adjusting method of a kitchen range hood according to claim 8, wherein said controlling confirms that the air density of the front side of the kitchen range hood is suddenly increased/decreased by the steps of: the preset wind pressure threshold corresponding to the current wind power gear of the fan (3) comprises a high threshold and a low threshold, when the wind pressure data sent by the wind sensor exceeds the high threshold, the density of air on the front side of a kitchen range hood is increased, the current wind power gear of the fan (3) is too low, and the controller (2) controls the fan (3) to be shifted up; when the wind pressure data sent by the wind sensor is lower than a low threshold value, the fact that the front side air density of the kitchen range hood is reduced is shown, the current wind power gear of the fan (3) is too high, and the controller (2) controls the fan (3) to downshift.
10. The automatic wind power adjusting method of the range hood according to claim 9, wherein the high threshold and the low threshold corresponding to each wind power gear are obtained by the following steps: under the condition of a laboratory, the fan (3) is set at a certain gear, then the change of wind pressure data collected by the wind pressure sensor (1) under different oil smoke concentrations is tested, and the degree of oil smoke amount is defined by calibrating the value of the change of the wind pressure data or the proportion of the value of the change of the wind pressure data to the initial state.
CN202110733109.6A 2021-06-28 2021-06-28 Automatic wind power adjusting device and method for kitchen range hood Pending CN113324269A (en)

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CN202110733109.6A CN113324269A (en) 2021-06-28 2021-06-28 Automatic wind power adjusting device and method for kitchen range hood

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CN202110733109.6A CN113324269A (en) 2021-06-28 2021-06-28 Automatic wind power adjusting device and method for kitchen range hood

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103822283A (en) * 2014-03-12 2014-05-28 黄善花 Air capacity controlling device and method for extractor hood
CN105485742A (en) * 2016-01-13 2016-04-13 宁波方太厨具有限公司 Air speed and air pressure sensor for extractor hood and extractor hood
CN106196208A (en) * 2016-07-26 2016-12-07 广东万家乐燃气具有限公司 A kind of automatically control the control method of cigarette machine gear, control system and lampblack absorber
CN206669833U (en) * 2017-03-24 2017-11-24 欧派家居集团股份有限公司 High-static pressure fan system and range hood
CN110107935A (en) * 2019-04-25 2019-08-09 宁波方太厨具有限公司 A kind of exhaust smoke system for kitchen and its cooking-fume exhauster blower method for controlling number of revolution
EP3730843A1 (en) * 2019-04-25 2020-10-28 BSH Hausgeräte GmbH Method for adjusting control scheme of cooker hood and cooker hood
CN216844799U (en) * 2021-06-28 2022-06-28 火星人厨具股份有限公司 Automatic wind power adjusting device for kitchen range hood

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103822283A (en) * 2014-03-12 2014-05-28 黄善花 Air capacity controlling device and method for extractor hood
CN105485742A (en) * 2016-01-13 2016-04-13 宁波方太厨具有限公司 Air speed and air pressure sensor for extractor hood and extractor hood
CN106196208A (en) * 2016-07-26 2016-12-07 广东万家乐燃气具有限公司 A kind of automatically control the control method of cigarette machine gear, control system and lampblack absorber
CN206669833U (en) * 2017-03-24 2017-11-24 欧派家居集团股份有限公司 High-static pressure fan system and range hood
CN110107935A (en) * 2019-04-25 2019-08-09 宁波方太厨具有限公司 A kind of exhaust smoke system for kitchen and its cooking-fume exhauster blower method for controlling number of revolution
EP3730843A1 (en) * 2019-04-25 2020-10-28 BSH Hausgeräte GmbH Method for adjusting control scheme of cooker hood and cooker hood
CN216844799U (en) * 2021-06-28 2022-06-28 火星人厨具股份有限公司 Automatic wind power adjusting device for kitchen range hood

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Inventor after: Liu Feng

Inventor after: Wang Hui

Inventor after: Li Wei

Inventor after: Huang Weibin

Inventor after: Liao Xin

Inventor before: Liu Feng

Inventor before: Wang Xin

Inventor before: Li Wei

Inventor before: Huang Weibin

Inventor before: Liao Xin