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Wind pressure detection device of range hood and range hood thereof

A range hood and detection device technology, which is applied in the measurement device, the pressure difference measurement between multiple valves, and the removal of oil fume, etc., can solve the problems of increased energy consumption, indoor air pollution, sensor hysteresis, etc. The effect, the control is convenient and simple, the effect of improving the smoke exhaust effect

Pending Publication Date: 2021-11-23
QINGDAO HAIER WISDOM KITCHEN APPLIANCE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the difference in the speed and amount of oil fume produced by different cooking methods, there is a mismatch in the gear of the artificially selected wind speed, and there is a certain delay in the start-up and speed regulation of the motor.
If the gear position is too small, the amount of oil fume gas will not be removed in time, causing indoor air pollution; The fatigue of the cook will shorten the life of the range hood buttons
[0004] Most of the traditional intelligent control and purification systems of range hoods use sensors to detect, and the electrical signal is transmitted to the controller, which outputs a control strategy, and its control effect is not good.
Based on different cooking environments and temperature conditions, there is a strong coupling of soot gas. The irregularity of the diffusion of soot gas and the complexity of the composition of the soot gas and particle mixture during the cooking process of the range hood will bring hysteresis and large errors to the sensor. As a result, the oil fume is not removed in time, or the energy consumption is increased

Method used

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  • Wind pressure detection device of range hood and range hood thereof
  • Wind pressure detection device of range hood and range hood thereof
  • Wind pressure detection device of range hood and range hood thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 and figure 2 As shown, this embodiment is a further limitation of the above embodiment, the wind pressure sampling mechanism includes a first housing 100 and a second housing 200 connected to the first housing 100, the first housing 100 A cavity is formed between the second housing 200, a first collection cavity is formed between the isolation assembly and the first housing 100, and a first collection cavity is formed between the isolation assembly and the second housing 200. The second collection chamber; the differential pressure sensor is disposed on the second housing 200 , and the second housing 200 is provided with a terminal interface connected to the differential pressure sensor.

[0047] Further, the first housing 100 includes a bottom groove and an annular groove wall connected to the bottom groove, the isolation assembly is arranged at the junction of the bottom groove and the annular groove wall, and the isolation assembly One side of the...

Embodiment 2

[0058] The difference between this embodiment and the above-mentioned first embodiment is that the air pressure sampling mechanism includes a housing with a cavity, and an isolation component is arranged in the housing, and the isolation component divides the cavity into a first sampling unit. cavity and a second collection cavity; wherein, the first air inlet 101 and the first air inlet 201 are both arranged on the housing.

[0059] Wherein, the isolation assembly includes a deformable elastic pad 310 and a transmission frame 320 arranged on the elastic pad 310, the transmission frame 320 is provided with a support column 330, and a touch block 331 is provided in the support column 330 , and the support column 330 is covered with a sleeve 340, the support column 330 has a cylindrical portion connected to the transmission frame 320 and a claw connected to the cylindrical portion, the top of the claw A stopper is provided to prevent the sleeve 340 from falling off.

[0060] Fu...

Embodiment 3

[0065] Such as image 3 As shown, the present invention also proposes a range hood, including a wind pressure detection device for the range hood described in the above solution. The wind pressure detection device of the range hood can detect the actual wind pressure at a designated position of the smoke exhaust channel, and control the speed of the range hood motor according to the detected actual wind pressure to achieve better smoke exhaust effect.

[0066] Specifically, the range hood includes a controller, a motor and a wind pressure detection device respectively connected to the controller signal, the controller is electrically connected to the differential pressure sensor of the wind pressure detection device, and obtains the detection signal of the wind pressure detection device, so that according to The detection signal of the wind pressure detection device controls the motor speed of the motor, which can improve the response speed and sensitivity of the range hood. ...

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Abstract

The invention discloses a wind pressure detection device of a range hood and a range hood thereof. The wind pressure detection device 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 collecting cavity with a first air inlet and a second collecting cavity with a second air inlet; the pressure difference acquisition unit is used for acquiring pressure difference between the first collecting cavity and the second collecting cavity; and the range hood comprises the wind pressure detection device. According to the wind pressure detection device of the range hood, the air pressures collected by the two collecting cavities are different, so that the pressure difference is generated and is transmitted to the pressure difference acquisition unit; the dynamic pressure in an exhaust channel can be directly reflected after the pressure difference is obtained by the pressure difference acquisition unit; detection of the dynamic pressure is more accurate and rapid than change of smoke, so that the response speed and the sensitivity of the range hood can be improved.

Description

technical field [0001] The invention belongs to the field of kitchen appliances, and in particular relates to a wind pressure detection device of a range hood and the range hood. Background technique [0002] Based on the common domestic kitchen culture, stir frying and various steaming methods, the cooking process will inevitably produce harmful soot particles and gases. There will be a large amount of soot gas in the kitchen. Both the vascular circulation system and the immune system are seriously endangered, which will endanger the health of the cook. Therefore, the exhaust purification ability of range hoods has received widespread attention. [0003] At present, the untimely matching between the fixed speed of the range hood motor and the emission efficiency and amount of oil fume particles in the market is the current problem. The working mode of this type of range hood and the user experience have great limitations. Gear or frequency conversion control, and differen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24C15/20G01L13/00
CPCF24C15/2021G01L13/00
Inventor 乔友伟孟永哲艾希顺公玺
Owner QINGDAO HAIER WISDOM KITCHEN APPLIANCE CO LTD