CN213178466U

CN213178466U - Fume exhaust fan

Info

Publication number: CN213178466U
Application number: CN201921851604.1U
Authority: CN
Inventors: 陈建平
Original assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Current assignee: Zhejiang Shaoxing Supor Domestic Electrical Appliance Co Ltd
Priority date: 2019-10-30
Filing date: 2019-10-30
Publication date: 2021-05-11
Anticipated expiration: 2029-10-30

Abstract

The embodiment of the utility model provides a range hood. The range hood comprises a heat release module, a smoke sensing module, a control device and an air deflector assembly, wherein the heat release module is used for detecting the temperature of a burner on the stove to obtain temperature data; the smoke sensing module is used for detecting smoke generated by cooking of the cooker to obtain smoke data; the air guide plate assembly comprises an air guide plate and a driving mechanism, and the driving mechanism is used for driving the air guide plate to open and close the air inlet; the control device is respectively connected with the heat releasing module, the smoke sensing module and the driving mechanism, and is used for receiving temperature data acquired by the heat releasing module and smoke data acquired by the smoke sensing module and controlling the driving mechanism to drive the air deflector to be opened and closed based on the temperature data and the smoke data. The false detection probability is effectively reduced.

Description

Fume exhaust fan

Technical Field

The utility model relates to a kitchen utensil technical field specifically, relates to a lampblack absorber.

Background

The fume exhauster is a kitchen electrical appliance for purifying kitchen environment, and is mounted over the kitchen range, and can quickly exhaust away the wastes burnt by the range and the fume harmful to human body produced in the cooking process, and discharge them out of the room, so that it can reduce pollution, purify air and possesses the safety protection action of gas-proofing and explosion-proofing.

The air deflector of the range hood is an important part and can control the opening and closing of the air inlet at the rear part. The range hood which collects the temperature of a burner through a heat release module and controls an air deflector to be switched on and off based on the temperature of the burner is provided at present.

The range hood which controls the switch of the air deflector based on the temperature data collected by the heat release module cannot identify whether the temperature of the monitored object is the temperature of the flame of the furnace end or the temperature in the cooker. If the temperature of flame is monitored by the heat release module, the air deflector is controlled to be opened when the opening condition is met, and if no pot is placed above the furnace end, misjudgment can occur.

SUMMERY OF THE UTILITY MODEL

In order to at least partially solve the problems in the prior art, a range hood is provided.

According to one aspect of the utility model, a range hood is provided, which comprises a heat releasing module, a smoke sensing module, a control device and an air deflector component, wherein the heat releasing module is used for detecting the temperature of a burner on a stove to obtain temperature data; the smoke sensing module is used for detecting smoke generated by cooking of the cooker to obtain smoke data; the air deflector assembly comprises an air deflector and a driving mechanism, and the driving mechanism is used for driving the air deflector to open and close an air inlet of the range hood; the control device is respectively connected with the heat releasing module, the smoke sensing module and the driving mechanism, and is used for receiving temperature data acquired by the heat releasing module and smoke data acquired by the smoke sensing module and controlling the driving mechanism to drive the air deflector to be opened and closed based on the temperature data and the smoke data.

Illustratively, the air inlet comprises a first air inlet positioned on the left side and a second air inlet positioned on the right side, and the air deflectors comprise a first air deflector for opening and closing the first air inlet and a second air deflector for opening and closing the second air inlet.

Illustratively, the air inlet further comprises a third air inlet positioned between the first air inlet and the second air inlet, and the air deflector further comprises a third air deflector for opening and closing the third air inlet.

Illustratively, the control device includes a first smoke comparator connected to the smoke sensing module, the first smoke comparator being configured to: and comparing the smoke data with a preset smoke threshold, and if the smoke data is greater than the preset smoke threshold, outputting a smoke comparison signal for indicating that the first air deflector, the second air deflector and the third air deflector are qualified to open.

Illustratively, the smoke sensing module includes a first smoke sensor and/or a second smoke sensor, the first smoke sensor being located around the first air inlet, the second smoke sensor being located around the second air inlet, the control device including: the second smoke comparator is connected with the first smoke sensor and used for comparing the first smoke detection data acquired by the first smoke sensor with the first smoke threshold value and outputting a smoke comparison signal for indicating that the first air deflector is qualified to be opened if the first smoke detection data is larger than the first smoke threshold value; and/or a third smoke comparator connected to the second smoke sensor for comparing second smoke detection data collected by the second smoke sensor with a second smoke threshold and outputting a smoke comparison signal indicating that the second air deflector is eligible to open if the second smoke detection data is greater than the second smoke threshold; wherein the smoke data comprises first smoke detection data and/or second smoke detection data.

Illustratively, the smoke sensing module comprises a first smoke sensor or a second smoke sensor, and the control device further comprises: a fourth smoke comparator connected to the first smoke sensor or the second smoke sensor for comparing the first smoke detection data to the first smoke threshold or the second smoke detection data to the second smoke threshold and outputting a smoke comparison signal indicating that the third air deflector is eligible to open if the first smoke detection data is greater than the first smoke threshold or the second smoke detection data is greater than the second smoke threshold.

Illustratively, the smoke sensing module comprises a first smoke sensor and a second smoke sensor, and the control device further comprises: a fifth smoke comparator connected to the first smoke sensor and the second smoke sensor for comparing the first smoke detection data to the first smoke threshold and the second smoke detection data to the second smoke threshold and for outputting a smoke comparison signal indicating that the third air deflector is eligible to open if the first smoke detection data is greater than the first smoke threshold or the second smoke detection data is greater than the second smoke threshold; or a sixth smoke comparator connected to the first smoke sensor and the second smoke sensor for comparing the first smoke detection data to the first smoke threshold and the second smoke detection data to the second smoke threshold and outputting a smoke comparison signal indicating that the third air deflector is eligible to open if the first smoke detection data is greater than the first smoke threshold and the second smoke detection data is greater than the second smoke threshold.

Illustratively, the smoke sensing module includes a third smoke sensor located around the third air inlet, and the control device includes: a seventh smoke comparator for comparing third smoke detection data collected by the third smoke sensor with a third smoke threshold and outputting a smoke comparison signal indicating that the third air deflector is eligible to open if the third smoke detection data is greater than the third smoke threshold; wherein the smoke data comprises third smoke detection data.

Illustratively, the control device includes: the first temperature comparator is connected with the heat release module and used for comparing the temperature of the first furnace end and the temperature of the second furnace end with a first temperature threshold value and outputting a temperature comparison signal for indicating whether a first condition is met, wherein the first condition is that the temperature of any one of the first furnace end and the second furnace end is greater than the first temperature threshold value; the first AND gate circuit is connected with one of the first smoke comparator, the fourth smoke comparator, the fifth smoke comparator, the sixth smoke comparator and the seventh smoke comparator and the first temperature comparator and is used for outputting a first AND gate signal if a smoke comparison signal for indicating that the third air deflector is qualified to be opened and a temperature comparison signal for indicating that the first condition is met are received, and otherwise outputting a second AND gate signal; and the first signal generator is connected with the first AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be opened based on the first AND gate signal output by the first AND gate circuit and outputting the control signal to the driving mechanism.

Exemplarily, the control device further comprises: the first timer is connected with the first AND gate circuit and used for timing the duration time of a second AND gate signal output by the first AND gate circuit after the first AND gate signal and generating a first timing signal when the duration time exceeds a first preset time; and the second signal generator is connected with the first timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be closed based on the first timing signal and outputting the control signal to the driving mechanism.

Illustratively, the control device includes: the second temperature comparator is connected with the heat release module and used for comparing the temperature of the first furnace end and the temperature of the second furnace end with a second temperature threshold value and a third temperature threshold value and outputting a temperature comparison signal for indicating whether a second condition is met, wherein the second condition is that the temperature of any one furnace end of the first furnace end and the second furnace end is greater than the second temperature threshold value and the temperature of the other furnace end of the first furnace end and the second furnace end is greater than the third temperature threshold value; a second and gate circuit, connected to one of the first smoke comparator, the fourth smoke comparator, the fifth smoke comparator, the sixth smoke comparator and the seventh smoke comparator and the second temperature comparator, for outputting the first and gate signal if the smoke comparison signal for indicating that the third air deflector is qualified to open and the temperature comparison signal for indicating that the second condition is satisfied are received, and otherwise outputting the second and gate signal; and the third signal generator is connected with the second AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be opened based on the first AND gate signal output by the second AND gate circuit and outputting the control signal to the driving mechanism.

Exemplarily, the control device further comprises: the second timer is connected with the second AND gate circuit and used for timing the duration time of a second AND gate signal output by the second AND gate circuit after the first AND gate signal and generating a second timing signal when the duration time exceeds second preset time; and the fourth signal generator is connected with the second timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be closed based on the second timing signal and outputting the control signal to the driving mechanism.

Illustratively, the control device includes: the summation circuit is connected with the heat release module and used for calculating the sum of the temperatures of the first furnace end and the second furnace end; the third temperature comparator is connected with the summing circuit and used for comparing the sum of the temperatures of the first furnace end and the second furnace end with a fourth temperature threshold value and outputting a temperature comparison signal for indicating whether a third condition is met, wherein the third condition is that the sum of the temperatures of the first furnace end and the second furnace end is greater than the fourth temperature threshold value; a third and gate circuit, connected to one of the first smoke comparator, the fourth smoke comparator, the fifth smoke comparator, the sixth smoke comparator and the seventh smoke comparator and the third temperature comparator, for outputting the first and gate signal if a smoke comparison signal indicating that the third air deflector is qualified to open and a temperature comparison signal indicating that the third condition is met are received, and otherwise outputting the second and gate signal; and the fifth signal generator is connected with the third AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be opened based on the first AND gate signal output by the third AND gate circuit and outputting the control signal to the driving mechanism.

Exemplarily, the control device further comprises: the third timer is connected with the third AND gate circuit and used for timing the duration time of a second AND gate signal output by the third AND gate circuit after the first AND gate signal and generating a third timing signal when the duration time exceeds a third preset time; and the sixth signal generator is connected with the third timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to close based on the third timing signal and outputting the control signal to the driving mechanism.

Illustratively, the control device includes: the fourth temperature comparator is connected with the heat release module and used for comparing the temperature of the first furnace end with a fifth temperature threshold value and outputting a temperature comparison signal for indicating whether a fourth condition is met, wherein the fourth condition is that the temperature of the first furnace end is greater than the fifth temperature threshold value; a fourth and gate circuit, connected to the first smoke comparator or the second smoke comparator and to the fourth temperature comparator, for outputting the first and gate signal if a smoke comparison signal indicating that the first air deflector is eligible to open and a temperature comparison signal indicating that the fourth condition is met are received, and otherwise outputting the second and gate signal; the seventh signal generator is connected with the fourth AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the first air deflector to be opened based on the first AND gate signal output by the fourth AND gate circuit and outputting the control signal to the driving mechanism; and/or a fifth temperature comparator connected with the heat release module and used for comparing the temperature of the second furnace end with a fifth temperature threshold value and outputting a temperature comparison signal for indicating whether a fifth condition is met, wherein the fifth condition is that the temperature of the second furnace end is greater than the fifth temperature threshold value; a fifth and gate circuit, connected to the first smoke comparator or the third smoke comparator and to the fifth temperature comparator, for outputting the first and gate signal if a smoke comparison signal indicating that the second air deflector is eligible to open and a temperature comparison signal indicating that the fifth condition is met are received, and otherwise outputting the second and gate signal; and the eighth signal generator is connected with the fifth AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the second air deflector to be opened based on the first AND gate signal output by the fifth AND gate circuit and outputting the control signal to the driving mechanism.

Exemplarily, the control device further comprises: the fourth timer is connected with the fourth AND gate circuit and used for timing the duration time of a second AND gate signal output by the fourth AND gate circuit after the first AND gate signal and generating a fourth timing signal when the duration time exceeds a fourth preset time; the ninth signal generator is connected with the fourth timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the first air deflector to be closed based on the fourth timing signal and outputting the control signal to the driving mechanism; and/or, a fifth timer connected to the fifth and-gate circuit, configured to time a duration of a second and-gate signal output by the fifth and-gate circuit after the first and-gate signal, and generate a fifth timing signal when the duration exceeds a fifth preset time; and the tenth signal generator is connected with the fifth timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the second air deflector to close based on the fifth timing signal and outputting the control signal to the driving mechanism.

Exemplarily, the range hood further comprises a fan and a motor driving circuit, wherein the fan comprises a main motor, and the motor driving circuit is connected with the control device and the main motor; the control device is also used for generating a driving signal for controlling the working gear of the fan based on the temperature data and the smoke data; the motor drive circuit is used for generating a drive current based on the drive signal and outputting the drive current to the overall motor.

Illustratively, the heat release module and/or the smoke sensing module are located in the middle of the top of the range hood.

The range hood further comprises an input assembly, the input assembly is used for receiving air deflector indication information which is input by a user and used for indicating the opening and closing of air deflectors in the air deflector assembly, the control device is connected with the input assembly, and the control device is further used for controlling the driving mechanism to drive each air deflector to open and close based on the air deflector indication information.

Exemplarily, the range hood further comprises a switch control panel and a power panel, the control device comprises a first chip and a second chip, the first chip is integrated on the switch control panel, the second chip is integrated on the power panel, and the first chip is connected with the heat release module and used for receiving temperature data and transmitting the temperature data to the second chip; the second chip is respectively connected with the smoke sensing module and the driving mechanism and used for receiving the temperature data and the smoke data and controlling the driving mechanism to drive the air deflectors to be opened and closed based on the temperature data and the smoke data.

The driving mechanism comprises a lifting mechanism connected to a third air deflector, the third air deflector has a lifting closed position and a falling open position under the driving of the lifting mechanism, the third air deflector closes the third air inlet when in the lifting closed position, and the third air deflector opens the third air inlet when in the falling open position.

Illustratively, the driving mechanism comprises a first turnover mechanism connected to the first air deflector and a second turnover mechanism connected to the second air deflector, the first air deflector has a turnover opening position and a turnover closing position under the driving of the first turnover mechanism, the first air inlet is opened when the first air deflector is in the turnover opening position, the first air inlet is closed when the first air deflector is in the turnover closing position, the second air deflector has a turnover opening position and a turnover closing position under the driving of the second turnover mechanism, the second air inlet is opened when the second air deflector is in the turnover opening position, and the second air inlet is closed when the second air deflector is in the turnover closing position.

According to the utility model discloses lampblack absorber, this lampblack absorber include that the module is felt to the cigarette and the module is released to the heat, is used for detecting smog data and temperature data respectively, based on the switch of these two kinds of information control aviation baffles. Compared with a range hood which only adopts temperature data, the range hood can effectively reduce the probability of false detection, improve the control precision and further can more effectively absorb oil smoke.

A series of concepts in a simplified form are introduced in the disclosure, which will be described in further detail in the detailed description section. The summary of the invention is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

The advantages and features of the present invention are described in detail below with reference to the accompanying drawings.

Drawings

The following drawings of the present invention are used herein as part of the present invention for understanding the present invention. There are shown in the drawings, embodiments and descriptions thereof, which are used to explain the principles of the invention. In the drawings, there is shown in the drawings,

fig. 1 shows a schematic block diagram of a range hood according to an embodiment of the present invention;

figure 2 shows a front view of a range hood and a cooking appliance according to an embodiment of the present invention; and

figure 3 shows a left side view of a range hood and a cooker according to an embodiment of the present invention.

Detailed Description

In the following description, numerous details are provided to provide a thorough understanding of the present invention. One skilled in the art, however, will understand that the following description illustrates only a preferred embodiment of the invention and that the invention may be practiced without one or more of these details. In addition, some technical features that are well known in the art are not described in detail in order to avoid obscuring the present invention.

In order to solve the technical problem at least partially, the embodiment of the utility model provides a range hood. According to the utility model discloses lampblack absorber includes that the module is felt to the cigarette and the module is released to the heat, is used for detecting smog data and temperature data respectively, based on the switch of these two kinds of information control aviation baffles. Compared with a range hood which only adopts a heat release module, the range hood can effectively reduce the probability of false detection, improve the control precision and further can more effectively absorb oil smoke.

Next, a range hood according to an embodiment of the present invention will be described with reference to fig. 1 to 3. Fig. 1 shows a schematic block diagram of a range hood 100 according to an embodiment of the present invention. It should be noted that the range hood 100 shown in fig. 1 is only an example and not a limitation of the present invention, and the present invention is not limited to the embodiment shown in fig. 1. For example, fig. 1 shows that the control device 120 is a control chip including a first chip 122 and a second chip 124 (to be described later), but the control device 120 may be a single chip or include a larger number (e.g., three, etc.) of chips. Alternatively, the control device 120 may also be other types of devices, such as a Programmable Logic Controller (PLC) or the like. For another example, the range hood 100 may not divide the switch control board 140 and the power supply board 150, but implement all the components on the same circuit board. Also for example, both the light emitting diode display (fig. 1, abbreviated as LED display) and the keys may be optional, i.e., range hood 100 may optionally include these components.

As shown in fig. 1, the range hood 100 includes a heat releasing module 110, a smoke sensing module 160, a control device 120, and an air deflection assembly 130.

The heat release module 110 is used to detect the temperature of the burner on the cooktop to obtain temperature data.

For example, the heat release module 110 may be disposed at any suitable position as long as it can detect the temperature of the burner to be measured on the stove. It is noted that the temperature of any one burner means the temperature at a specific position within a predetermined distance (e.g., 10 cm) around the burner, which may be preset at the time of manufacturing or installing the range hood 100, and is known to the control device 120. The temperature at the particular location may be determined by the control device 120 based on the temperature data. It will be appreciated that in the case of a pan above the burner, the temperature of any burner is the temperature in the pan above it.

Illustratively, the pyroelectric module 110 may be implemented using a pyroelectric infrared sensor, such as an OTPA-16PM4S sensor. The pyroelectric module 110 may detect the temperature within a preset distance (i.e., its temperature detection range) in real time. For example, the pyroelectric module 110 can detect 256 (16 × 16) temperature points at a time, i.e., the temperatures at 256 positions. The heat release module 110 may transmit the detected temperature data to the control device 120.

The smoke detection module 160 is used to detect smoke generated by cooking of the cooktop to obtain smoke data. The smoke sensing module 160 may be implemented using any suitable sensor capable of detecting smoke concentration. The smoke sensing module 160 can detect the smoke concentration around the cooker or within a preset range (smoke detection range thereof) around each of one or more air inlets of the range hood 100 in real time. The smoke sensing module 160 can be disposed at any suitable location as desired, such as the middle of the top of the range hood 100. The predetermined range is related to the detection capability of the smoke detection module 160, which is predetermined.

Figure 2 shows a front view of a range hood and a cooker according to an embodiment of the present invention. Figure 3 shows a left side view of a range hood and a cooker according to an embodiment of the present invention. The positional relationship of the heat release module, the smoke sensing module, and the burner of the cooktop can be understood with reference to fig. 2 and 3.

The air guide assembly 130 includes an air guide plate and a driving mechanism for driving the air guide plate to open and close the air inlet of the range hood 100. Fig. 1 and 2 illustrate that the air deflection assembly 130 includes three air deflectors, which are merely exemplary and not limiting, and the air deflection assembly 130 may include a greater or lesser number of air deflectors.

For example, the air deflector assembly 130 may include a first air deflector, a second air deflector, a third air deflector, and a driving mechanism for driving the first air deflector, the second air deflector, and the third air deflector to open and close the first air inlet, the second air inlet, and the third air inlet, respectively, independently from each other. In fig. 1 and 2, the first air guiding plate is a left air guiding plate, the second air guiding plate is a right air guiding plate, and the third air guiding plate is a middle air guiding plate.

The air inlet is closed when the air deflector is closed, and the air inlet is opened when the air deflector is opened. Alternatively, the air deflector may be a plate capable of adjusting the air intake amount of the air inlet, for example, it may be an angle and/or height adjustable plate, the area of the ventable region of the air inlet corresponding to the air deflector may be adjusted by changing the angle of the air deflector, or the distance between the air inlet corresponding to the air deflector and the air deflector may be adjusted by changing the height of the air deflector. That is, the deflector, when open, may be switched between a plurality of different angles and/or a plurality of different heights. Alternatively, the air deflection plate may be a plate having only two states of opening and closing.

The control device 120 is connected to the heat releasing module 110, the smoke sensing module 160, and the driving mechanism, and the control device 120 is configured to receive the temperature data collected by the heat releasing module 110 and the smoke data collected by the smoke sensing module 160, and control the driving mechanism to drive the air deflectors to open and close based on the temperature data and the smoke data.

The control device 120 may be implemented by using electronic components such as a comparator, a register, and a digital logic circuit, or by using processor chips such as a single chip microcomputer, a microprocessor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), a Field Programmable Gate Array (FPGA), a Programmable Logic Array (PLA), and an Application Specific Integrated Circuit (ASIC), and peripheral circuits thereof.

The heat release module 110 and/or the smoke sensing module 160 may be connected with the control device 120 by a wired or wireless manner. Accordingly, the heat release module 110 and/or the smoke sensing module 160 may transmit the collected temperature data and/or smoke data to the control device 120 through a wired or wireless manner.

For example, the drive mechanism may include one-to-one air deflection motor (not shown in fig. 1) associated with one or more air deflectors, each of which may be configured to drive movement of the associated air deflection. Correspondingly, the driving mechanism may further include a motor driving circuit (not shown in fig. 1) associated with the air deflectors, and the motor driving circuit may be configured to output a motor driving current to the air deflector motor of each air deflector to drive each air deflector motor to rotate, so as to drive each air deflector to move.

For example, the control device 120 may control the magnitude of the driving current output to each air deflection motor to control the rotation of each air deflection motor, and thus control the opening and closing of each air deflection plate.

Illustratively, the range hood 100 may further include a blower including a general motor (shown as a dc motor in fig. 1) and a fan, the general motor being configured to drive the fan to rotate, thereby sucking the soot. In addition, the range hood 100 may further include a motor driving circuit 170 connected to the main motor, and the motor driving circuit 170 is configured to output a driving current to the main motor to control the main motor to rotate. Alternatively, the control device 120 may be connected to the motor driving circuit 170 of the overall motor, and the control device 120 may be further configured to control the magnitude of the driving current output by the motor driving circuit 170, so as to control the rotation speed of the fan (i.e., the operating range of the fan). An embodiment in which the control device 120 controls the operating range of the fan will be described below.

After receiving the temperature data transmitted by the heat releasing module 110 and the smoke data transmitted by the smoke sensing module 160, the control device 120 may control the driving current corresponding to each air deflector based on the temperature data and the smoke data according to a preset rule, so as to control the opening and closing of each air deflector.

Controlling the opening and closing of the air deflection plates purely on the basis of temperature data may lead to false detections, since there may be situations, for example, where the user has ignited the gas stove but is not cooking, i.e. no smoke is generated. According to the utility model discloses lampblack absorber adopts the smoke to feel module collection smog data to combine smog data and temperature data to control the switch of aviation baffle, can reduce above-mentioned false detection's probability, improve control accuracy, and then can absorb the oil smoke more effectively.

According to the utility model discloses, the air intake can be including being located left first air intake and being located the second air intake on right side, the aviation baffle can be including the first aviation baffle of opening and closing first air intake and the second aviation baffle of opening and closing the second air intake.

The air deflection assembly 130 may include any number of air deflectors. The two air deflectors can respectively correspond to the two furnace ends (the first furnace end and the second furnace end) and are respectively used for absorbing the oil smoke generated by the two furnace ends, so that the arrangement mode of the air deflectors can more specifically absorb the oil smoke generated by each furnace end, and the purification effect is good.

According to the utility model discloses, the air intake is still including being located the third air intake between first air intake and the second air intake, the aviation baffle is still including the third aviation baffle of opening and closing the third air intake. An embodiment of three air deflectors can be understood with reference to fig. 1 and 2.

Because the air deflector assembly 130 comprises three air deflectors, when the first air deflector and/or the second air deflector cannot effectively smoke, the third air deflector can be opened, namely the third air inlet is opened to assist the first air inlet and/or the second air inlet to smoke, so that the air inlet amount can be effectively increased, oil smoke can be quickly absorbed, and the environmental pollution of a kitchen is reduced. The control scheme can quickly and flexibly adjust the air inlet volume and effectively help to absorb the oil smoke.

According to the utility model discloses, actuating mechanism can have the rise closed position and descend the open position including the elevating system who is connected to the third aviation baffle, third aviation baffle under elevating system's drive, and the third aviation baffle closes the third air inlet when being in the rise closed position, and the third air inlet is opened when the third aviation baffle is in the descend open position.

The lifting mechanism can be arranged inside the shell of the range hood and connected with the third air deflector to drive the third air deflector to rise and fall (namely close and open). The rising and closing position of the third air deflector refers to the position of the third air deflector when the lifting mechanism is in the minimum telescopic state, at this time, the third air inlet is completely hidden relative to the outside of the range hood 100, and the third air inlet is closed. On the contrary, the falling open position of the third air deflector refers to the position of the third air deflector when the lifting mechanism is in the maximum telescopic state, at this time, the third air inlet is completely shown relative to the outside of the range hood 100, and the third air inlet is opened.

When a large amount of oil smoke appears in the kitchen, the lifting mechanism drives the third air deflector to move to the landing opening position, the third air inlet is opened, and at the moment, the oil smoke can enter the range hood 100 through the third air inlet and then is discharged to the outside of the kitchen. When the kitchen oil smoke is reduced to a certain degree, the lifting mechanism drives the third air deflector to move to the lifting closing position, the third air inlet is closed, and at the moment, the third air deflector isolates the peculiar smell and the residual oil smoke in the range hood 100 outside the kitchen environment.

The utility model discloses a set up the area that the third air intake can increase the air intake between first air intake and second air intake, when the oil smoke that the culinary art produced is great, can open the third air intake to quick clean-up oil smoke, the sanitation and the user's that can effectively protect the kitchen like this health. The third air inlet is opened and closed by the third air deflector in a rising and falling mode, the third air inlet can be opened only when a large amount of oil smoke appears, the third air inlet is kept closed at other times, and therefore the purposes of isolating the inside and the outside of the range hood and protecting devices inside the range hood can be achieved.

According to the embodiment of the utility model provides a, actuating mechanism can be including the first tilting mechanism that is connected to first aviation baffle and the second tilting mechanism that is connected to the second aviation baffle, first aviation baffle has the upset under first tilting mechanism's drive and opens the position and the upset closed position, first air intake is opened when first aviation baffle is in the upset open position, first air intake is closed when first aviation baffle is in the upset closed position, the second aviation baffle has the upset under second tilting mechanism's drive and opens the position and the upset closed position, open the second air intake when the second aviation baffle is in the upset open position, close the second air intake when the second aviation baffle is in the upset closed position.

The first turnover mechanism may be disposed inside a housing of the range hood 100 and connected to the first air guide plate to drive the first air guide plate to turn over between the turning-over open position and the turning-over closed position. The second turnover mechanism may be disposed inside a housing of the range hood 100 and connected to the second air guide plate to drive the second air guide plate to turn over between the turning-over open position and the turning-over closed position. The turning open positions of the first air deflector and the second air deflector refer to positions of the air deflectors when the respective turning mechanisms are at one end point of a turning stroke, at the moment, corresponding air inlets are all shown relative to the outside of the range hood 100, and the corresponding air inlets are opened. The turning-off positions of the first air deflector and the second air deflector refer to positions of the air deflectors when the respective turning mechanisms are at the other end point of the turning stroke, at this time, the corresponding air inlets are completely hidden relative to the outside of the range hood 100, and the corresponding air inlets are turned off.

When oil smoke appears on the first side (for example, the left side), the first air deflector is turned over and opened, the first air inlet is opened, and at the moment, the oil smoke can enter the range hood 100 through the first air inlet along the first air deflector and then is discharged out of the kitchen. When the first side oil smoke disappears, the first air deflector turns over and closes, so that the first air inlet is closed, and at the moment, the first air deflector isolates the peculiar smell and residual oil smoke in the interior of the range hood 100 and the flue outside the kitchen environment. Similarly, when oil smoke appears on the second side (for example, the right side), the second air deflector is turned over and opened, the second air inlet is opened, and at this time, the oil smoke can enter the range hood 100 through the second air inlet along the second air deflector and then be discharged out of the kitchen. When the second side oil smoke disappears, the second air deflector turns over and closes, so that the second air inlet is closed, and the second air deflector isolates the peculiar smell and residual oil smoke inside the range hood 100 and in the flue outside the kitchen environment.

Through the arrangement of the turnover, the occupied space when the first air deflector and the second air deflector are opened can be reduced, the using space of the range hood 100 can be further reduced, and the increase of the activity space of a user during cooking is facilitated.

Illustratively, each of the first and second flipping mechanisms includes: a motor fixed in the housing of the range hood 100; the first transmission rod is provided with a first end and a second end, and the first end is connected to a rotating shaft of the motor; and a second drive link having a third end pivotably connected to the second end and a fourth end pivotably connected to the respective first or second air deflection plate.

For example, the first flipping mechanism may include a motor, a first driving lever, and a second driving lever. Wherein the motor is fixed inside the housing of the range hood 100. The first end of the first transmission rod is provided with a structure matched with the rotating shaft of the motor, such as a hole, and the first end of the first transmission rod is connected with the rotating shaft of the motor through the hole. The second end and the third end of the second drive link are provided with mating structures, such as shaft holes, to pivotally couple the first and second drive links together. The fourth end of the second transmission rod and the first air deflector are provided with matched structures, such as shaft holes, so that the second transmission rod and the first air deflector can be connected together in a pivoting mode. Through the arrangement, the side wall of the oil fume shell, the first transmission rod, the second transmission rod and the first air deflector form a four-bar linkage mechanism, so that the function of finally driving the first air deflector to turn over through the first transmission rod and the second transmission rod by the rotation of the rotating shaft of the motor is realized. The structure and the working principle of the second turnover mechanism are similar, and the detailed description is omitted.

The turnover mechanism realized by the motor, the first transmission rod and the second transmission rod has simple element structure, low processing cost, light weight and small volume, can effectively reduce the weight and the manufacturing cost of the range hood 100, and simplifies the internal structure thereof.

Illustratively, the lifting mechanism may include: a linear motor fixed in the housing of the range hood 100; the sliding rail is provided with a fixed part and a sliding part, the fixed part is fixed in the shell of the range hood 100, the sliding part is connected to the linear motor and the third air deflector, and the linear motor drives the third air deflector to rise and fall through the sliding part.

The elevating mechanism of the range hood 100 is provided with a linear motor and a slide rail. The linear motor is fixed inside the housing of the range hood 100 by a screw connection. The slide may be similar to the slide used with drawers. The slide rail includes a fixed portion and a sliding portion. The fixed portion is fixed in the housing of the range hood 100, for example, by a screw connection. The sliding portion may be connected to the linear motor and the third air guide plate. For example, one end of the sliding portion may be provided with a structure matching the rotation shaft of the linear motor, such as a hole, through which the transmission shaft of the linear motor is coupled. The other end of the sliding part can be fixed on the third air deflector through three support rods and can be connected with the fixed part in a sliding way through a sliding chute or other forms. When the transmission shaft of the linear motor stretches out, the sliding part is driven to synchronously move downwards along the track of the fixed part, and the third air deflector is driven by the three support rods to realize the landing function, so that the third air inlet is opened. Similarly, when the transmission shaft of the linear motor retracts, the sliding part is driven to synchronously move upwards along the track of the fixed part, and the third air deflector is driven by the three support rods to realize the lifting function, so that the third air inlet is closed. Through the arrangement, the noise generated by the third air deflector in the lifting and falling processes can be effectively reduced, and the movement resistance is reduced, so that the power of the linear motor is reduced, and the purposes of energy conservation and emission reduction are achieved.

The manner of controlling the opening and closing of the air deflector in combination with the smoke data and the temperature data may comprise: and determining whether the one or more air deflectors are eligible to open based on the smoke data, and in the case that the one or more air deflectors are eligible to open, determining when the air deflectors are open, to which station the air deflectors are opened, which operating gear the fan adopts and the like based on the temperature data can be further determined.

According to the present invention, the control device 120 may include a first smoke comparator (not shown) connected to the smoke sensing module 160, and the first smoke comparator may be configured to: and comparing the smoke data with a preset smoke threshold, and if the smoke data is greater than the preset smoke threshold, outputting a smoke comparison signal for indicating that the first air deflector, the second air deflector and the third air deflector are qualified to open. Optionally, the first smoke comparator may output a smoke comparison signal indicating that the first, second and third air deflectors are not eligible to open or output no signal if the smoke data is less than or equal to a preset smoke threshold.

In this context, any smoke comparator (e.g., first smoke comparator, second smoke comparator, third smoke comparator, etc.) and any temperature comparator (e.g., first temperature comparator, second temperature comparator, third temperature comparator, etc.) may be implemented using any suitable device or circuit capable of performing the comparison function. It will be appreciated by those skilled in the art that the smoke threshold (e.g., the preset smoke threshold, the first smoke threshold, the second smoke threshold, etc.) referred to by any of the smoke comparators may be represented by an analog signal or a digital signal, such as a voltage signal having a certain magnitude. Similarly, the temperature thresholds (e.g., the first temperature threshold, the second temperature threshold, the third temperature threshold, etc.) involved in any of the temperature comparators may be represented by analog signals or digital signals.

The preset smoke threshold may be any suitable value, which may be set as desired, without limitation. For example, the preset smoke threshold may be 1000ppm, 2000ppm, 5000ppm, etc.

Alternatively, a separate smoke sensor may be provided which collects separate smoke data for simultaneous control of the switching of the three air deflectors. In this case, if the smoke data exceeds the preset smoke threshold, the current hob may be considered to be in use, and it is determined that all three air deflectors are eligible to open, and if the smoke data does not exceed the preset smoke threshold, the current hob is considered to be not in use, and at this time none of the three air deflectors are eligible to open. The first smoke comparator may output any form of smoke comparison signal. In one example, the smoke comparison signal output by the first smoke comparator is a high level or a low level, the high level is used for indicating that the first air deflector, the second air deflector and the third air deflector are qualified to open, and the low level is used for indicating that the first air deflector, the second air deflector and the third air deflector are not qualified to open.

The unified control scheme requires a small number of smoke sensors, is low in cost, and is simple in data processing and high in processing speed.

According to the embodiment of the utility model provides a, smoke and feel module 160 includes first smoke transducer and/or second smoke transducer, and first smoke transducer is located around first air intake, and second smoke transducer is located around the second air intake, and controlling means 120 includes: the second smoke comparator is connected with the first smoke sensor and used for comparing the first smoke detection data acquired by the first smoke sensor with the first smoke threshold value and outputting a smoke comparison signal for indicating that the first air deflector is qualified to be opened if the first smoke detection data is larger than the first smoke threshold value; and/or a third smoke comparator connected to the second smoke sensor for comparing second smoke detection data collected by the second smoke sensor with a second smoke threshold, and if the second smoke detection data is greater than the second smoke threshold, outputting a smoke comparison signal indicating that the second air deflector is eligible to open, otherwise outputting a smoke comparison signal indicating that the second air deflector is not eligible to open; wherein the smoke data comprises first smoke detection data and/or second smoke detection data. Optionally, the second smoke comparator may output a smoke comparison signal indicating that the first air deflector is not eligible to open or no signal if the first smoke detection data is less than or equal to the first smoke threshold. Optionally, the third smoke comparator may output a smoke comparison signal indicating that the second air deflector is not eligible to open or no signal if the second smoke detection data is less than or equal to the second smoke threshold.

The first smoke threshold and the second smoke threshold may be any suitable values, which may be set as desired, and the present invention is not limited thereto. For example, the first smoke threshold may be 1000ppm, 2000ppm, 5000ppm, etc. For example, the second smoke threshold may be 1000ppm, 2000ppm, 5000ppm, etc.

The first smoke sensor may be located at a suitable position as required. For example, the first smoke sensor may be arranged around the first air inlet, e.g. within a first predetermined distance from a first specific point on the first air deflection plate, the first specific point being a fixed point, the first predetermined distance may be any suitable distance, e.g. 5 cm, 10 cm, etc. The second smoke sensor may be located at a suitable position as required. For example, the second smoke sensor may be arranged around the second air inlet, e.g. within a second predetermined distance from a second specific point on the second air deflector, the second specific point being a fixed point, the second predetermined distance may be any suitable distance, e.g. 5 cm, 10 cm, etc.

Optionally, different smoke sensors may be respectively disposed on the first air deflector and the second air deflector, and are used to respectively acquire respective smoke data. The first smoke detection data collected by the first smoke sensor are used for controlling the switch of the first air deflector, and the second smoke detection data collected by the second smoke sensor are used for controlling the switch of the second air deflector. For example, when the first smoke detection data exceeds a first smoke threshold, the first gas burner (corresponding to the first burner) may be considered being used, at which point the first air deflection plate may be determined to be eligible to open, and whether to open the first air deflection plate may be further determined based on the temperature of the first burner. Similarly, when the second smoke detection data exceeds a second smoke threshold, a second gas stove (corresponding to a second burner) may be considered being used, at which time the second air deflection plate may be determined to be eligible to open, and whether to open the second air deflection plate may be further determined based on a temperature of the second burner.

The second and third smoke comparators may output any form of smoke comparison signal. In one example, the smoke comparison signal output by the second smoke comparator is a high level or a low level, the high level is used for indicating that the first air deflector is qualified to open, and the low level is used for indicating that the first air deflector is not qualified to open. Similarly, the smoke comparison signal output by the third smoke comparator may be high or low, high indicating that the second air deflector is qualified to open, and low indicating that the second air deflector is not qualified to open.

The switch of the third air deflector may be controlled based on the first smoke detection data and/or the second smoke detection data, or based on third smoke detection data detected by a third smoke sensor. The separation control scheme has large data collection quantity, has more pertinence and more accuracy in the control of each air deflector, and can further improve the control precision.

According to the utility model discloses embodiment, smoke sensor module 160 includes first smoke transducer or second smoke transducer, and controlling means 120 still includes: and the fourth smoke comparator is connected with the first smoke sensor or the second smoke sensor and used for comparing the first smoke detection data with the first smoke threshold value or comparing the second smoke detection data with the second smoke threshold value, if the first smoke detection data is larger than the first smoke threshold value or the second smoke detection data is larger than the second smoke threshold value, a smoke comparison signal used for indicating that the third air deflector is qualified to be opened is output, and otherwise, a smoke comparison signal used for indicating that the third air deflector is not qualified to be opened is output.

The fourth smoke comparator may output any form of smoke comparison signal. In one example, the smoke comparison signal output by the fourth smoke comparator is a high level or a low level, the high level is used for indicating that the first air deflector, the second air deflector and the third air deflector are qualified to open, and the low level is used for indicating that the first air deflector, the second air deflector and the third air deflector are not qualified to open.

The fourth smoke comparator may be, for example, the second smoke comparator or the third smoke comparator, or may be implemented independently of the second smoke comparator or the third smoke comparator.

Alternatively, it may be determined that the third air deflection plate is qualified to be opened when any gas range is used. Thus, it may be determined that the third air deflection panel is eligible to open when any of the smoke detection data is greater than its corresponding smoke threshold. In the situation that the air intake of the first air inlet or the second air inlet is not enough to deal with the oil smoke generated by the corresponding gas stove, it is an effective scheme to allow the third air inlet to assist the first air inlet or the second air inlet in increasing the air intake.

In the case where the smoke module 160 includes only the first smoke sensor, it may be determined whether the first air deflector and the third air deflector are eligible to open based on the first smoke detection data, at which time the second air deflector may default to always being eligible to open. Conversely, in the case where the smoke module 160 includes only the second smoke sensor, it may be determined whether the second air deflector and the third air deflector are qualified to open based on the second smoke detection data, and at this time, the first air deflector may default to always be qualified to open.

According to the utility model discloses embodiment, smoke sensor module 160 includes first smoke transducer and second smoke transducer, and controlling means 120 still includes: a fifth smoke comparator connected to the first smoke sensor and the second smoke sensor for comparing the first smoke detection data to the first smoke threshold and the second smoke detection data to the second smoke threshold and for outputting a smoke comparison signal indicating that the third air deflector is eligible to open if the first smoke detection data is greater than the first smoke threshold or the second smoke detection data is greater than the second smoke threshold; or a sixth smoke comparator connected to the first smoke sensor and the second smoke sensor for comparing the first smoke detection data to the first smoke threshold and the second smoke detection data to the second smoke threshold and outputting a smoke comparison signal indicating that the third air deflector is eligible to open if the first smoke detection data is greater than the first smoke threshold and the second smoke detection data is greater than the second smoke threshold. Optionally, the fifth smoke comparator may output a smoke comparison signal indicating that the third air deflector is not eligible to open or not output any signal if the first smoke detection data is less than or equal to the first smoke threshold and the second smoke detection data is less than or equal to the second smoke threshold. Optionally, the sixth smoke comparator may output a smoke comparison signal indicating that the third air deflector is not eligible to open or not output any signal if the first smoke detection data is less than or equal to the first smoke threshold or the second smoke detection data is less than or equal to the second smoke threshold.

Illustratively, the fifth smoke comparator may include a second smoke comparator, a third smoke comparator, and an or gate connected to the second smoke comparator and the third smoke comparator. The second smoke comparator and the third smoke comparator may input respective smoke comparison signals to an or gate, which outputs the smoke comparison signal of the fifth smoke comparator. The fifth smoke comparator may output any form of smoke comparison signal. In one example, the smoke comparison signal output by the fifth smoke comparator is a high level or a low level, the high level is used for indicating that the third air deflector is qualified to open, and the low level is used for indicating that the third air deflector is not qualified to open.

Illustratively, the sixth smoke comparator may include a second smoke comparator, a third smoke comparator, and an and gate circuit connected to the second smoke comparator and the third smoke comparator. The second smoke comparator and the third smoke comparator may input respective smoke comparison signals to the and circuit, and the and circuit outputs the smoke comparison signal of the sixth smoke comparator. The fifth smoke comparator may output any form of smoke comparison signal. In one example, the smoke comparison signal output by the sixth smoke comparator is a high level or a low level, the high level is used for indicating that the third air deflector is qualified to open, and the low level is used for indicating that the third air deflector is not qualified to open.

Illustratively, the fifth smoke comparator and the sixth smoke comparator may each be implemented independently of the second smoke comparator and the third smoke comparator.

Where the smoke module 160 includes a first smoke sensor and a second smoke sensor, it may be determined whether the third air deflector is eligible to open based on the first smoke detection data and the second smoke detection data. At this time, it may be determined whether the third air deflector is qualified to open based on various criteria, for example, it may be determined that the third air deflector is qualified to open if any of the smoke detection data exceeds the corresponding threshold, or it may be determined that the third air deflector is qualified to open if two kinds of smoke detection data exceed the corresponding thresholds at the same time.

Similarly, in a situation that the air intake amount of the first air inlet or the second air inlet is not enough to deal with the oil smoke generated by the corresponding gas stove, it is an effective scheme to allow the third air inlet to assist the first air inlet or the second air inlet in increasing the air intake amount.

According to the utility model discloses, smoke and feel module 160 includes third smoke transducer, and third smoke transducer is located around the third air inlet, and controlling means 120 includes: a seventh smoke comparator for comparing third smoke detection data collected by the third smoke sensor with a third smoke threshold and outputting a smoke comparison signal indicating that the third air deflector is eligible to open if the third smoke detection data is greater than the third smoke threshold; wherein the smoke data comprises third smoke detection data. Optionally, the seventh smoke comparator may output a smoke comparison signal indicating that the third air deflector is not eligible to open or no signal if the third smoke detection data is less than or equal to the third smoke threshold.

The seventh smoke comparator may output any form of smoke comparison signal. In one example, the smoke comparison signal output by the seventh smoke comparator is a high level or a low level, the high level is used for indicating that the third air deflector is qualified to open, and the low level is used for indicating that the third air deflector is not qualified to open.

The third smoke threshold may be any suitable value, which may be set as desired, and the present invention is not limited thereto. For example, the third smoke threshold may be 1000ppm, 2000ppm, 5000ppm, etc. For example, the third smoke threshold may be 1000ppm, 2000ppm, 5000ppm, etc.

The third smoke sensor may be located at a suitable position as required. For example, the third smoke sensor may be arranged around the third air inlet, e.g. within a third predetermined distance from a third specific point on the third air deflector, the third specific point being a fixed point, the third predetermined distance may be any suitable distance, e.g. 5 cm, 10 cm, etc.

The third air inlet is positioned between the first air inlet and the second air inlet, and when the first gas stove and/or the second gas stove are used, the periphery of the third air inlet can receive larger smoke with higher probability, so that an independent smoke sensor can be directly arranged for the third air deflector, and whether the third air deflector is qualified to be opened or not is determined based on smoke detection data acquired by the smoke sensor alone. The scheme can further improve the control precision of the air deflector.

The following describes an implementation manner of a scheme of controlling a switch, an opening station, a working gear of a fan and the like of the air deflector based on temperature data on the premise of determining that one or more of the first air deflector, the second air deflector and the third air deflector is qualified to be opened.

According to the embodiment of the present invention, the furnace end includes first furnace end 210 and second furnace end 220, and control device 120 includes: the first temperature comparator is connected with the heat release module 110 and is used for comparing the temperature of the first furnace head 210 and the temperature of the second furnace head 220 with a first temperature threshold value and outputting a temperature comparison signal for indicating whether a first condition is met, wherein the first condition is that the temperature of any one of the first furnace head 210 and the second furnace head 220 is greater than the first temperature threshold value; the first AND gate circuit is connected with one of the first smoke comparator, the fourth smoke comparator, the fifth smoke comparator, the sixth smoke comparator and the seventh smoke comparator and the first temperature comparator and is used for outputting a first AND gate signal if a smoke comparison signal for indicating that the third air deflector is qualified to be opened and a temperature comparison signal for indicating that the first condition is met are received, and otherwise outputting a second AND gate signal; and the first signal generator is connected with the first AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be opened based on the first AND gate signal output by the first AND gate circuit and outputting the control signal to the driving mechanism.

The first temperature comparator may output any form of temperature comparison signal. In one example, the temperature comparison signal output by the first temperature comparator is at a high level to indicate that the first condition is satisfied or a low level to indicate that the first condition is not satisfied. The first and circuit may also output any suitable form of control signal. In one example, the control signal output by the first and circuit is a low level or a square wave signal, the driving mechanism does not drive the third air deflector to move at the low level, and the air deflector drives the third air deflector to move at the square wave signal so as to open the air deflector.

The first and gate circuit may output a corresponding and gate signal based on the smoke comparison signal and the temperature comparison signal, for example, may output the first and gate signal when the smoke comparison signal and the temperature comparison signal are both 1, and output the second and gate signal. The first and gate circuit may output any form of and gate signal. In one example, the and gate signal output by the first and gate circuit is a high level signal (i.e., the first and gate signal) to indicate that the third air deflector is qualified to open and the first condition is satisfied, or a low level signal (i.e., the second and gate signal) to indicate that the third air deflector is not qualified to open and/or the first condition is not satisfied.

The signal generator may generate various waveforms as desired. The signal output by the and circuit may not be suitable for the drive mechanism and therefore may be converted via a signal generator to generate a signal that is suitable for the drive mechanism. For example, the first signal generator may generate a square wave signal based on the first and gate signal, so as to control the driving mechanism to drive the air deflector to move with the square wave signal.

In the case where it is determined based on the smoke data that the third air deflection plate is eligible to open, the drive mechanism may be controlled to drive the third air deflection plate to open when it is determined based on the temperature data that the first condition is satisfied.

The first temperature threshold may be any suitable value, which may be set as desired, but is not limited by the present invention. Illustratively, the first temperature threshold may be 100 ℃, 120 ℃, 150 ℃, 200 ℃, and so on.

For example, the first air deflector and the second air deflector may be considered to correspond to the first burner and the second burner, respectively, and the first air deflector and the second air deflector may optionally open according to the following rules: when the first furnace end is used (for example, a pot is arranged above the first furnace end), the first air deflector can be opened firstly, the first air inlet is mainly used for smoking, and when the second furnace end is used (for example, a pot is arranged above the second furnace end), the second air deflector can be opened firstly, the second air inlet is mainly used for smoking.

The opening rule of the third air deflector can be set according to requirements, and the third air deflector can have various implementation schemes. In one embodiment, when the temperature of any one of the first furnace end and the second furnace end is greater than the first temperature threshold, the driving mechanism can be controlled to drive the third air deflector to open. That is to say, in this embodiment, only need look over whether the temperature of arbitrary furnace end exceeds the threshold value can, need not the temperature of two furnace ends and satisfies certain condition simultaneously. By adopting the scheme, when any burner is used, the third air inlet can be opened in time to increase the air inlet amount, so that the oil smoke can be sucked more cleanly.

For example, when the temperature of the first stove head is greater than a certain threshold (i.e., the first temperature threshold), the oil smoke may not be effectively sucked only by the first air inlet, and therefore the third air deflector may be selectively opened at this time. In this case, the third air guiding plate can be selectively opened regardless of the temperature of the second burner, i.e., whether the second gas stove corresponding to the second burner is on or not. The processing mode when the temperature of the second furnace end is greater than the first temperature threshold value is similar, and the description is omitted. Of course, if the temperatures of the first and second burners are simultaneously greater than the first temperature threshold, the third air deflector also needs to be opened.

It should be noted that in the case of a deflector having only two states, open and closed, opening a deflector as described herein may refer to placing the deflector in a single open state. Where the angle and/or height of the deflector is adjustable, opening a deflector as described herein can be opening the deflector to an angle and/or height (described collectively below with an opening station), and the specific angle and/or height to which the deflector is opened can optionally be determined based on temperature data.

According to the embodiment of the present invention, the control device 120 further includes: the first timer is connected with the first AND gate circuit and used for timing the duration time of a second AND gate signal output by the first AND gate circuit after the first AND gate signal and generating a first timing signal when the duration time exceeds a first preset time; and the second signal generator is connected with the first timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be closed based on the first timing signal and outputting the control signal to the driving mechanism.

Any of the timers described herein (e.g., the first timer, the second timer, the third timer, etc.) may be implemented using any suitable device or circuit having a timing function. The first timer may output any suitable form of control signal. In one example, the signal output by the first timer is a low level signal or a pulse signal, and the time when the pulse occurs indicates that the duration of the second and gate signal output after the first and gate signal at that time just exceeds the first preset time.

For example, the second signal generator may generate a square wave signal based on the first timing signal so as to control the driving mechanism to drive the air deflector to move with the square wave signal. The signal output by the first timer is low level, the second signal generator can also output low level, the driving mechanism does not drive the third air deflector to move at the moment, when the signal output by the first timer is pulse signal, the second signal generator can output square wave signal, and at the moment, the air deflector drives the third air deflector to move so as to close the air deflector.

When the third air deflector is opened, the driving mechanism can be controlled to drive the third air deflector to close when the state that the third air deflector is not qualified to be opened is determined based on the smoke data and/or the state that the first condition is not satisfied is determined based on the temperature data for the first preset time.

The first preset time may be any suitable time, which may be set as desired, and the present invention is not limited thereto. Illustratively, the first preset time may be 10 seconds, 20 seconds, 40 seconds, 1 minute, 2 minutes, and so on. Of course, alternatively, the first preset time may be 0.

It is understood that the state in which the temperatures of the first and second burners are both less than or equal to the first temperature threshold belongs to the state in which the first condition is not satisfied.

The following description will be given taking the example where the first temperature threshold is 200 deg.c and the first preset time is 30 seconds. When the temperature of the first furnace end exceeds 200 ℃, the third air deflector is opened at the moment. Subsequently, the user may shut down or reduce the fire power so that the temperature of the first burner is gradually lowered down to below 200 ℃. Subsequently, if it is determined that the state in which the temperature of the first head is below 200 ℃ continues for more than 30 seconds, the third air guide plate may be turned off. Optionally, the smoke data may also be monitored, and the third air deflector may also be turned off if it is found that the third air deflector is not eligible to open for more than 30 seconds (i.e., it is determined that the third air deflector is not eligible to open for all of the 30 seconds). The two criteria of determining that the third air deflector is not qualified to be opened for the first preset time based on the smoke data and determining that the first condition is not satisfied for the first preset time based on the temperature data can be selected or all used for judging whether the third air deflector needs to be closed.

When the third air deflector is determined to be in the state of being unqualified to be opened and/or the state of being unsatisfied by the first condition is determined to last for the first preset time, the driving mechanism is controlled to drive the third air deflector to be closed, the scheme can intelligently and automatically close the air deflector in time, and user experience is good.

According to the embodiment of the present invention, the furnace end includes first furnace end 210 and second furnace end 220, and control device 120 includes: a second temperature comparator connected to the heat releasing module 110, configured to compare the temperature of the first furnace end 210 and the temperature of the second furnace end 220 with a second temperature threshold and a third temperature threshold, and output a temperature comparison signal indicating whether a second condition is met, where the second condition is that the temperature of any one of the first furnace end 210 and the second furnace end 220 is greater than the second temperature threshold and the temperature of the other of the first furnace end 210 and the second furnace end 220 is greater than the third temperature threshold; a second and gate circuit, connected to one of the first smoke comparator, the fourth smoke comparator, the fifth smoke comparator, the sixth smoke comparator and the seventh smoke comparator and the second temperature comparator, for outputting the first and gate signal if the smoke comparison signal for indicating that the third air deflector is qualified to open and the temperature comparison signal for indicating that the second condition is satisfied are received, and otherwise outputting the second and gate signal; and the third signal generator is connected with the second AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be opened based on the first AND gate signal output by the second AND gate circuit and outputting the control signal to the driving mechanism.

The output results of the second temperature comparator and the second and gate circuit are similar to the output results of the first temperature comparator and the first and gate circuit, and are not described again.

In the case where it is determined that the third air deflection plate is eligible to open based on the smoke data, the drive mechanism may be controlled to drive the third air deflection plate to open when it is determined that the second condition is satisfied based on the temperature data.

In this embodiment, the temperature of two burners need to be checked simultaneously, and the third air deflector is opened only when the temperature of two burners is greater than a certain threshold value.

The second temperature threshold and the third temperature threshold may be any suitable values, which may be set as desired, without limitation. Illustratively, the second temperature threshold may be 100 ℃, 120 ℃, 150 ℃, 200 ℃, and so on. Illustratively, the third temperature threshold may be 100 ℃, 120 ℃, 150 ℃, 200 ℃, and so on.

For example, the second temperature threshold and the third temperature threshold may be equal or unequal.

In one example, the second temperature threshold is 60 ℃ and the third temperature threshold is 200 ℃. That is, in the first and second burners, the third air guide plate may be opened when the temperature of one burner is higher than 60 ℃ and the temperature of the other burner is higher than 200 ℃.

By adopting the scheme, the third air inlet is opened when the two burner heads are used and the temperature reaches a certain threshold value, so that the air inlet amount is increased, the power can be saved to a certain extent, and the third air deflector is prevented from being frequently opened and closed when the oil smoke is not much.

According to the embodiment of the present invention, the control device 120 further includes: the second timer is connected with the second AND gate circuit and used for timing the duration time of a second AND gate signal output by the second AND gate circuit after the first AND gate signal, and generating a second timing signal when the duration time exceeds second preset time; and the fourth signal generator is connected with the second timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be closed based on the second timing signal and outputting the control signal to the driving mechanism.

The form of the output result of the second timer is similar to that of the first timer, and the form of the output result of the fourth signal generator is similar to that of the second signal generator, and is not described again.

When the third air deflector is opened, the driving mechanism can be controlled to drive the third air deflector to be closed when the state that the third air deflector is not qualified to be opened is determined based on the smoke data and/or the state that the second condition is not satisfied is determined based on the temperature data for a second preset time.

The second preset time may be any suitable time, which may be set as desired, without limitation. Illustratively, the second preset time may be 10 seconds, 20 seconds, 40 seconds, 1 minute, 2 minutes, and so on. Of course, alternatively, the second preset time may be 0.

It is to be understood that the state where the temperature of either one of the first and second burners is less than or equal to the smaller of the second and third temperature thresholds, or the temperature of both the first and second burners is less than or equal to the larger of the second and third temperature thresholds is a state where the second condition is not satisfied.

The following description will be given by taking the example that the second temperature threshold is 60 c, the third temperature threshold is 200 c, and the second preset time is 30 seconds. When the temperature of the first furnace end exceeds 60 ℃ and the temperature of the second furnace end exceeds 200 ℃, the third air deflector is opened at the moment. Subsequently, the user may shut down or reduce the fire power so that the temperature of the second burner is gradually lowered down to below 200 ℃ while the temperature of the first burner is kept constant above or below 100 ℃. Subsequently, if it is determined that the temperatures of the first and second burners are simultaneously in the state below 200 ℃ for more than 30 seconds, the third air guide plate may be turned off. Optionally, the smoke data may also be monitored, and the third air deflector may also be turned off if it is found that the third air deflector is not eligible to open for more than 30 seconds (i.e., it is determined that the third air deflector is not eligible to open for all of the 30 seconds). The two criteria of determining that the third air deflector is not qualified to be opened for the second preset time based on the smoke data and determining that the second condition is not satisfied for the second preset time based on the temperature data may be selected or all used for judging whether the third air deflector needs to be closed.

When the third air deflector is determined to be in the state of being unqualified to be opened and/or the state of being unsatisfied by the second condition is determined to last for the second preset time, the driving mechanism is controlled to drive the third air deflector to be closed, the scheme can intelligently and automatically close the air deflector in time, and user experience is good.

According to the embodiment of the present invention, the furnace end includes first furnace end 210 and second furnace end 220, and control device 120 includes: a summation circuit connected to the heat release module 110 for calculating a sum of the temperatures of the first furnace head 210 and the second furnace head 220; a third temperature comparator connected to the summing circuit, for comparing a sum of the temperatures of the first furnace head 210 and the second furnace head 220 with a fourth temperature threshold, and outputting a temperature comparison signal indicating whether a third condition is satisfied, wherein the third condition is that the sum of the temperatures of the first furnace head 210 and the second furnace head 220 is greater than the fourth temperature threshold; a third and gate circuit, connected to one of the first smoke comparator, the fourth smoke comparator, the fifth smoke comparator, the sixth smoke comparator and the seventh smoke comparator and the third temperature comparator, for outputting the first and gate signal if a smoke comparison signal indicating that the third air deflector is qualified to open and a temperature comparison signal indicating that the third condition is met are received, and otherwise outputting the second and gate signal; and the fifth signal generator is connected with the third AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be opened based on the first AND gate signal output by the third AND gate circuit and outputting the control signal to the driving mechanism.

The summing circuit may be any suitable circuit having a summing function, such as a summing circuit implemented using operational amplifiers, resistors, and the like. The output results of the third temperature comparator and the third and-gate circuit are similar to the output results of the first temperature comparator and the first and-gate circuit, and are not described again.

In the case where it is determined based on the smoke data that the third air deflection plate is eligible to open, the drive mechanism may be controlled to drive the third air deflection plate to open when it is determined based on the temperature data that the third condition is satisfied.

In this embodiment, the temperatures of the two burners need to be checked at the same time, and the third air deflector is opened only when the sum of the temperatures of the two burners is greater than a certain threshold.

The fourth temperature threshold may be any suitable value, which may be set as desired, but is not limited by the present invention. Illustratively, the fourth temperature threshold may be 100 ℃, 120 ℃, 150 ℃, 200 ℃, and so on.

By adopting the scheme, when the sum of the temperatures of the two furnace ends reaches a certain threshold value, the third air inlet is opened, the air inlet amount is increased, so that the power can be saved to a certain extent, and the third air deflector is prevented from being frequently opened and closed when the oil smoke is not too much.

According to the embodiment of the present invention, the control device 120 further includes: the third timer is connected with the third AND gate circuit and used for timing the duration time of a second AND gate signal output by the third AND gate circuit after the first AND gate signal and generating a third timing signal when the duration time exceeds a third preset time; and the sixth signal generator is connected with the third timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to close based on the third timing signal and outputting the control signal to the driving mechanism.

The form of the output result of the third timer is similar to that of the first timer, and the form of the output result of the sixth signal generator is similar to that of the second signal generator, and therefore, the description is omitted.

When the third air deflector is opened, the driving mechanism can be controlled to drive the third air deflector to close when the state that the third air deflector is not qualified to be opened is determined based on the smoke data and/or the state that the third condition is not satisfied is determined based on the temperature data for a third preset time.

The third preset time may be any suitable time, which may be set as desired, and the present invention is not limited thereto. Illustratively, the third preset time may be 10 seconds, 20 seconds, 40 seconds, 1 minute, 2 minutes, and so on. Of course, alternatively, the third preset time may be 0.

It is understood that a state in which the sum of the temperatures of the first and second burners is less than or equal to the fourth temperature threshold value belongs to a state in which the third condition is not satisfied.

When the third air deflector is determined to be in the state of being unqualified to be opened and/or the state of being unsatisfied by the third condition is determined to last for the third preset time, the driving mechanism is controlled to drive the third air deflector to be closed, the scheme can intelligently and automatically close the air deflector in time, and user experience is good.

According to the embodiment of the present invention, the furnace end includes the first furnace end 210 and the second furnace end 220, and the control device 120 may include: a fourth temperature comparator connected to the heat releasing module 110, for comparing the temperature of the first furnace head 210 with a fifth temperature threshold, and outputting a temperature comparison signal indicating whether a fourth condition is satisfied, wherein the fourth condition is that the temperature of the first furnace head 210 is greater than the fifth temperature threshold; a fourth and gate circuit, connected to the first smoke comparator or the second smoke comparator and to the fourth temperature comparator, for outputting the first and gate signal if a smoke comparison signal indicating that the first air deflector is eligible to open and a temperature comparison signal indicating that the fourth condition is met are received, and otherwise outputting the second and gate signal; the seventh signal generator is connected with the fourth AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the first air deflector to be opened based on the first AND gate signal output by the fourth AND gate circuit and outputting the control signal to the driving mechanism; and/or, the control device 120 may include: a fifth temperature comparator connected to the heat releasing module 110, configured to compare the temperature of the second burner 220 with a fifth temperature threshold, and output a temperature comparison signal indicating whether a fifth condition is met, where the fifth condition is that the temperature of the second burner 220 is greater than the fifth temperature threshold; a fifth and gate circuit, connected to the first smoke comparator or the third smoke comparator and to the fifth temperature comparator, for outputting the first and gate signal if a smoke comparison signal indicating that the second air deflector is eligible to open and a temperature comparison signal indicating that the fifth condition is met are received, and otherwise outputting the second and gate signal; and the eighth signal generator is connected with the fifth AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the second air deflector to be opened based on the first AND gate signal output by the fifth AND gate circuit and outputting the control signal to the driving mechanism.

The output results of the fourth and fifth temperature comparators and the fourth and fifth and gate circuits are similar to the output results of the first and second temperature comparators and the first and gate circuits, and are not described again.

In the case where it is determined based on the smoke data that the first air deflection plate is eligible to open, the drive mechanism may be controlled to drive the first air deflection plate to open when it is determined based on the temperature data that the fourth condition is satisfied. In the case where it is determined that the second air deflection plate is eligible to open based on the smoke data, the drive mechanism may be controlled to drive the second air deflection plate to open when it is determined that the fifth condition is satisfied based on the temperature data.

The fifth temperature threshold may be any suitable value, which may be set as desired, but is not limited by the present invention. Illustratively, the fifth temperature threshold may be 60 ℃, 80 ℃, 100 ℃, 120 ℃, and so on. Preferably, when the first furnace end and/or the second furnace end is/are used, the first air deflector and/or the second air deflector is/are opened preferentially, and when the air intake of the first air inlet and/or the second air inlet is/are insufficient, the third air deflector is opened. Therefore, it is preferable that the fifth temperature threshold value is the smallest among the above-described first temperature threshold value, second temperature threshold value, third temperature threshold value, and fifth temperature threshold value.

The first furnace end and the second furnace end respectively correspond to the first air deflector and the second air deflector, and the first air deflector and the second air deflector can be respectively controlled to be opened and closed according to the temperatures of the first furnace end and the second furnace end, so that oil smoke generated when the respectively corresponding furnace ends are used can be sucked through the first air inlet and the second air inlet. Compared with a single air inlet, the range hood comprising the first air inlet and the second air inlet can effectively improve the smoking effect.

According to the embodiment of the present invention, the control device 120 may further include: the fourth timer is connected with the fourth AND gate circuit and used for timing the duration time of a second AND gate signal output by the fourth AND gate circuit after the first AND gate signal and generating a fourth timing signal when the duration time exceeds a fourth preset time; the ninth signal generator is connected with the fourth timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the first air deflector to be closed based on the fourth timing signal and outputting the control signal to the driving mechanism; and/or, the control device 120 may further include: the fifth timer is connected with the fifth AND gate circuit and used for timing the duration time of a second AND gate signal output by the fifth AND gate circuit after the first AND gate signal and generating a fifth timing signal when the duration time exceeds a fifth preset time; and the tenth signal generator is connected with the fifth timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the second air deflector to close based on the fifth timing signal and outputting the control signal to the driving mechanism.

The output results of the fourth timer and the fifth timer are similar to the output results of the first timer in form, and are not described again.

When the first air deflector is opened, the driving mechanism can be controlled to drive the first air deflector to be closed when the state that the first air deflector is not qualified to be opened is determined based on the smoke data and/or the state that the fourth condition is not satisfied is determined based on the temperature data for a fourth preset time. When the second air deflector is opened, the driving mechanism can be controlled to drive the second air deflector to be closed when the state that the second air deflector is not qualified to be opened is determined based on the smoke data and/or the state that the fifth condition is not satisfied is determined based on the temperature data for a fifth preset time.

The fourth preset time and the fifth preset time may be any suitable time, which may be set as desired, without limitation. Illustratively, the fourth preset time or the fifth preset time may be 10 seconds, 20 seconds, 40 seconds, 1 minute, 2 minutes, and the like. Of course, alternatively, the fourth preset time or the fifth preset time may be 0.

The closing schemes of the first air guiding plate and the second air guiding plate and the advantages thereof can be understood by referring to the above description of the embodiment of closing the third air guiding plate, and the detailed description thereof is omitted.

According to the embodiment of the present invention, the range hood 100 further includes a fan and a motor driving circuit 170, the fan includes a main motor, and the motor driving circuit 170 is connected to the control device 120 and the main motor; the control device 120 is further configured to generate a driving signal for controlling an operating position of the fan based on the temperature data and the smoke data; the motor drive circuit 170 is configured to generate a drive current based on the drive signal and output the drive current to the overall motor.

The operation of the overall motor and motor drive circuit 170 is described above and will not be described in detail.

As mentioned above, the control device 120 can also be used to control the operating range of the fan by controlling the drive current of the total motor. The fan may have any number of operating positions, for example three: high-grade, medium-grade, low-grade, different working gear correspond to different fan rotational speeds.

When the gas stove is not used and the first air deflector, the second air deflector and the third air deflector are not qualified to be opened, the fan does not need to be opened, and therefore power can be saved. For example, in the case that one or more of the first air deflector, the second air deflector and the third air deflector is qualified to open, as the temperature of any one or two burners increases, the control device 120 may increase the operating range of the fan accordingly. The scheme can further provide larger air intake by adjusting the working gear of the fan and absorb oil smoke in time.

According to the embodiment of the utility model provides a heat release module 110 can be located the middle part at the top of lampblack absorber 100, can detect the temperature of two furnace ends like this more balancedly, reduces the temperature and detects the error. For example, the smoke sensing module 160 may also be located in the middle of the top of the range hood 100, so that the smoke concentration around the range or the range hood can be detected relatively uniformly, and the smoke detection error can be reduced. Referring to fig. 2, the arrangement positions of the heat release module and the smoke sensing module are shown. Alternatively, the heat releasing module 110 may be disposed at any position as long as its temperature detection range can cover the first and second burners.

Alternatively, the pyroelectric module 110 may include one or more pyroelectric infrared sensors. Because the temperature detection range of the pyroelectric infrared sensor is wider, the temperature of the two furnace ends can be detected by adopting a single pyroelectric infrared sensor generally, and the cost can be effectively saved by adopting the scheme. Of course, a plurality of pyroelectric infrared sensors may be provided as necessary. For example, two pyroelectric infrared sensors may be respectively installed above the first burner and the second burner, wherein the first pyroelectric infrared sensor is used for detecting the temperature of the first burner, and the second pyroelectric infrared sensor is used for detecting the temperature of the second burner.

According to the embodiment of the utility model provides a lampblack absorber 100 can also include the input assembly for receiving the aviation baffle indicating information that is arranged in instructing opening and closing of the aviation baffle in aviation baffle subassembly 130 of user's input, controlling means 120 is connected with the input assembly, and controlling means 120 can also be used for opening and closing each aviation baffle of aviation baffle indicating information control actuating mechanism drive based on aviation baffle.

Illustratively, the input component may be any hardware capable of receiving user instructions, which may include one or more of a keyboard, a mouse, a microphone, a touch screen, and the like, for example. The input component can also be a wired or wireless communication component for receiving the air deflector indication information input by the user and transmitted by the external equipment. The external device may be a personal computer, a mobile terminal, a server, etc.

For example, a switch control panel of the range hood may be provided with a plurality of air deflector control buttons, for example, three air deflector control buttons, which are respectively used for controlling the opening and closing of the three air deflectors. For example, when a user presses a first air deflector control key, the corresponding control driving mechanism can drive the first air deflector to be opened, and when the user presses the first air deflector control key again, the driving mechanism can be controlled to drive the first air deflector to be closed.

The air guide plate opening and closing control device has the advantages that an input assembly is provided for a user, the user can conveniently control the opening and closing of each air guide plate in a manual mode when needed, the user can have a large degree of freedom of control, and user experience is good.

For example, the input component may be further configured to receive mode indication information for indicating an automatic control mode input by a user, and the control device 120 may be further configured to receive temperature data collected by the heat release module 110 and smoke data collected by the smoke sensing module 160 in response to receiving the mode indication information, and control the driving mechanism to drive the air deflectors to open and close based on the temperature data and the smoke data.

Illustratively, the input assembly may further include a manual/automatic control button for switching the control mode between a manual control mode and an automatic control mode. For example, when the user presses the manual/automatic control button for the first time, the manual control mode is turned on, the user may control the switches of the air deflectors through the air deflector control button, and when the user presses the manual/automatic control button again, the automatic mode is turned on, and the control device 120 may start to read the temperature data and control the switches of the air deflectors based on the temperature data.

According to the embodiment of the present invention, the range hood 100 may further include a switch control board 140 and a power board 150, the control device 120 includes a first chip 122 and a second chip 124, the first chip 122 is integrated on the switch control board 140, the second chip 124 is integrated on the power board 150, the first chip 122 is connected to the heat releasing module 110 for receiving temperature data and transmitting the temperature data to the second chip 124; the second chip 124 is connected to the smoke sensing module 160 and the driving mechanism, respectively, and is configured to receive the temperature data and the smoke data, and control the driving mechanism to drive the air deflectors to open and close based on the temperature data and the smoke data.

Referring back to fig. 1, the switch control board 140 and the power board 150 are shown. The switch control panel 140 may be disposed on the front side of the range hood 100, and is mainly used for interacting with a user, for example, the user may input an instruction through a key (e.g., the above-mentioned air deflector control key, the manual/automatic control key, etc.) on the switch control panel 140, and may view information (e.g., a working gear of a fan, etc.) related to the range hood through an LED display device on the switch control panel 140.

The power board 150 may be disposed inside a housing of the range hood 100, and is mainly used to supply power to various components of the range hood. The power board 150 may include a power circuit and a motor driving circuit 170 of a general motor, and the like. The first chip 122 and the second chip 124 are integrated on the switch control board 140 and the power board 150, respectively, and may communicate by wire or wirelessly.

Preferably, the heat releasing module 110 is also disposed at the front of the range hood 100 to facilitate the detection of the first and second burner. Therefore, the pyroelectric module 110 can be connected with the first chip 122, and the temperature data is transmitted to the second chip 124 through the first chip 122, so that the second chip 124 controls the opening and closing of the air deflector.

The control device is separated, the range hood 100 can conveniently perform distributed layout on all parts, the influence among circuits is reduced, and the separation scheme can be well adapted to the conventional range hood framework, so that the development cost can be reduced.

An exemplary intake air control manner of the range hood 100 is described below in conjunction with table 1. The air inlet control mode shown in table 1 is a control mode under the premise that the three air deflectors are qualified to be opened. Table 1 shows the correspondence between the furnace end temperature, the fan operating position, and the air guide plate on-off state. In the embodiment shown in table 1, the operating range of the fan is divided into two ranges, namely a low range and a high range, and each of the three air deflectors has only two states of opening and closing. In table 1, the left temperature refers to the temperature of the left burner (i.e., the first burner) and the right temperature refers to the temperature of the right burner (i.e., the second burner). Looking at table 1, it can be seen that when the temperature of the left burner or the right burner is greater than 60 ℃, the corresponding left air deflector or the right air deflector is opened (see the above embodiment related to the fifth temperature threshold). The middle air deflector is only opened if one of the left and right burners is at a temperature greater than 60 c and the other is at a temperature greater than 200 c (see the above embodiments relating to the second and third temperature thresholds). In the case where only one head is used (the temperature of the other head does not exceed 60 ℃), the operating range is selected on the basis of the range in which the temperature of this head is located, the low range not exceeding 200 ℃, and the high range exceeding 200 ℃ (see the above-mentioned embodiment relating to the sixth temperature threshold). Under the condition that the two furnace ends are used (the temperature exceeds 60 ℃), the fan only uses high grade when the temperature of the two furnace ends exceeds 200 ℃, and uses low grade under the other conditions.

TABLE 1 corresponding relationship table between furnace end temperature, fan working gear and air deflector switch state

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front", "rear", "upper", "lower", "left", "right", "horizontal", "vertical", "horizontal" and "top", "bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner" and "outer" refer to the interior and exterior relative to the contours of the components themselves.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe the spatial relationship of one or more components or features shown in the figures to other components or features. It is to be understood that the spatially relative terms are intended to encompass not only the orientation of the component as depicted in the figures, but also different orientations of the component in use or operation. For example, if an element in the drawings is turned over in its entirety, the articles "over" or "on" other elements or features will include the articles "under" or "beneath" the other elements or features. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". Further, these components or features may also be positioned at various other angles (e.g., rotated 90 degrees or other angles), all of which are intended to be encompassed herein.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, elements, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.

The present invention has been described in terms of the above embodiments, but it is to be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the described embodiments. Furthermore, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that many more modifications and variations are possible in light of the teaching of the present invention and are within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A range hood is characterized by comprising a heat release module (110), a smoke sensing module (160), a control device (120) and an air deflector assembly (130), wherein,

the heat release module (110) is used for detecting the temperature of a burner on the stove to obtain temperature data;

the smoke sensing module (160) is used for detecting smoke generated by cooking of the cooker to obtain smoke data;

the air guide plate assembly (130) comprises an air guide plate and a driving mechanism, and the driving mechanism is used for driving the air guide plate to open and close an air inlet of the range hood (100);

the control device (120) is connected with the heat releasing module (110), the smoke sensing module (160) and the driving mechanism respectively, and the control device (120) is used for receiving the temperature data collected by the heat releasing module (110) and the smoke data collected by the smoke sensing module (160) and controlling the driving mechanism to drive the air deflector to be opened and closed based on the temperature data and the smoke data.

2. The range hood of claim 1, wherein the air inlet includes a first air inlet located at a left side and a second air inlet located at a right side, and the air deflectors include a first air deflector that opens and closes the first air inlet and a second air deflector that opens and closes the second air inlet.

3. The range hood of claim 2, wherein the air inlet further comprises a third air inlet located between the first air inlet and the second air inlet, and the air deflector further comprises a third air deflector that opens and closes the third air inlet.

4. A range hood as claimed in claim 3, characterized in that said control device (120) comprises a first smoke comparator connected to said smoke-sensitive module (160) for:

and comparing the smoke data with a preset smoke threshold, and if the smoke data is greater than the preset smoke threshold, outputting a smoke comparison signal for indicating that the first air deflector, the second air deflector and the third air deflector are qualified to open.

5. A range hood as claimed in claim 2, characterized in that said smoke sensing module (160) comprises a first smoke sensor and/or a second smoke sensor, said first smoke sensor being located around said first air inlet, said second smoke sensor being located around said second air inlet, said control device (120) comprising:

a second smoke comparator connected to the first smoke sensor for comparing first smoke detection data collected by the first smoke sensor with a first smoke threshold and outputting a smoke comparison signal indicating that the first air deflector is eligible to open if the first smoke detection data is greater than the first smoke threshold; and/or

A third smoke comparator connected to the second smoke sensor for comparing second smoke detection data collected by the second smoke sensor with a second smoke threshold and outputting a smoke comparison signal indicating that the second air deflector is qualified for opening if the second smoke detection data is greater than the second smoke threshold;

wherein the smoke data comprises the first smoke detection data and/or the second smoke detection data.

6. A range hood as claimed in claim 3, characterized in that said smoke sensing module (160) comprises a first smoke sensor and/or a second smoke sensor, said first smoke sensor being located around said first air inlet, said second smoke sensor being located around said second air inlet, said control device (120) comprising:

7. The range hood according to claim 6, characterized in that said smoke-sensitive module (160) comprises said first smoke sensor or said second smoke sensor, said control device (120) further comprising:

a fourth smoke comparator connected to the first smoke sensor or the second smoke sensor for comparing the first smoke detection data to the first smoke threshold or the second smoke detection data to the second smoke threshold and outputting a smoke comparison signal indicating that the third air deflector is eligible to open if the first smoke detection data is greater than the first smoke threshold or the second smoke detection data is greater than the second smoke threshold.

8. The range hood according to claim 6, characterized in that said smoke-sensitive module (160) comprises said first smoke sensor and said second smoke sensor, said control device (120) further comprising:

a fifth smoke comparator connected to the first smoke sensor and the second smoke sensor for comparing the first smoke detection data to the first smoke threshold and the second smoke detection data to the second smoke threshold and for outputting a smoke comparison signal indicating that the third air deflector is eligible to open if the first smoke detection data is greater than the first smoke threshold or the second smoke detection data is greater than the second smoke threshold; or

A sixth smoke comparator connected to the first smoke sensor and the second smoke sensor for comparing the first smoke detection data to the first smoke threshold and the second smoke detection data to the second smoke threshold, and for outputting a smoke comparison signal indicating that the third air deflector is eligible to open if the first smoke detection data is greater than the first smoke threshold and the second smoke detection data is greater than the second smoke threshold.

9. A range hood as claimed in claim 3, characterized in that said smoke-sensitive module (160) comprises a third smoke sensor located around said third air intake, said control device (120) comprising:

a seventh smoke comparator for comparing third smoke detection data collected by the third smoke sensor with a third smoke threshold and outputting a smoke comparison signal indicating that the third air deflector is eligible to open if the third smoke detection data is greater than the third smoke threshold;

wherein the smoke data comprises the third smoke detection data.

10. A range hood according to claim 4, characterized in that said burner comprises a first burner (210) and a second burner (220), said control device (120) comprising:

a first temperature comparator connected to the heat release module (110) and configured to compare the temperature of the first burner (210) and the temperature of the second burner (220) with a first temperature threshold and output a temperature comparison signal indicating whether a first condition is met, wherein the first condition is that the temperature of any one of the first burner (210) and the second burner (220) is greater than the first temperature threshold;

a first AND gate circuit connected to the first smoke comparator and the first temperature comparator for outputting a first AND gate signal if a smoke comparison signal indicating that the third air deflector is eligible to open and a temperature comparison signal indicating that the first condition is met are received, and otherwise outputting a second AND gate signal;

and the first signal generator is connected with the first AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be opened based on the first AND gate signal output by the first AND gate circuit and outputting the control signal to the driving mechanism.

11. A range hood as claimed in claim 7, characterized in that said burner comprises a first burner (210) and a second burner (220), said control means (120) comprising:

a first AND gate circuit connected to the fourth smoke comparator and the first temperature comparator for outputting a first AND gate signal if a smoke comparison signal indicating that the third air deflector is eligible to open and a temperature comparison signal indicating that the first condition is met are received, and otherwise outputting a second AND gate signal;

12. A range hood as claimed in claim 8, characterized in that said burner comprises a first burner (210) and a second burner (220), said control means (120) comprising:

a first and gate circuit, connected to one of the fifth smoke comparator and the sixth smoke comparator and the first temperature comparator, for outputting a first and gate signal if a smoke comparison signal indicating that the third air deflector is eligible to open and a temperature comparison signal indicating that the first condition is met are received, and otherwise outputting a second and gate signal;

13. A hood as claimed in claim 9, characterized in that said burner comprises a first burner (210) and a second burner (220), said control means (120) comprising:

a first and gate circuit connected to the seventh smoke comparator and the first temperature comparator for outputting a first and gate signal if a smoke comparison signal indicating that the third air deflector is eligible to open and a temperature comparison signal indicating that the first condition is met are received, and otherwise outputting a second and gate signal;

14. A hood as claimed in any one of claims 10 to 13, characterized in that said control means (120) further comprise:

the first timer is connected with the first AND gate circuit and used for timing the duration time of a second AND gate signal output by the first AND gate circuit after the first AND gate signal, and when the duration time exceeds a first preset time, a first timing signal is generated;

and the second signal generator is connected with the first timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be closed based on the first timing signal and outputting the control signal to the driving mechanism.

15. A range hood according to claim 4, characterized in that said burner comprises a first burner (210) and a second burner (220), said control device (120) comprising:

a second temperature comparator connected to the heat release module (110) for comparing the temperature of the first burner (210) and the temperature of the second burner (220) with a second temperature threshold and a third temperature threshold and outputting a temperature comparison signal indicating whether a second condition is met, wherein the second condition is that the temperature of any one of the first burner (210) and the second burner (220) is greater than the second temperature threshold and the temperature of the other of the first burner (210) and the second burner (220) is greater than the third temperature threshold;

a second AND gate circuit connected to the first smoke comparator and the second temperature comparator for outputting a first AND gate signal if a smoke comparison signal indicating that the third air deflection plate is eligible to open and a temperature comparison signal indicating that the second condition is met are received, and otherwise outputting a second AND gate signal;

and the third signal generator is connected with the second AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be opened based on the first AND gate signal output by the second AND gate circuit and outputting the control signal to the driving mechanism.

16. A range hood as claimed in claim 7, characterized in that said burner comprises a first burner (210) and a second burner (220), said control means (120) comprising:

a second AND gate circuit connected to the fourth smoke comparator and the second temperature comparator for outputting a first AND gate signal if a smoke comparison signal indicating that the third air deflection plate is eligible to open and a temperature comparison signal indicating that the second condition is met are received, and otherwise outputting a second AND gate signal;

17. A range hood as claimed in claim 8, characterized in that said burner comprises a first burner (210) and a second burner (220), said control means (120) comprising:

a second and gate circuit, connected to one of the fifth smoke comparator and the sixth smoke comparator and the second temperature comparator, for outputting a first and gate signal if a smoke comparison signal indicating that the third air deflector is eligible to open and a temperature comparison signal indicating that the second condition is met are received, and otherwise outputting a second and gate signal;

18. A hood as claimed in claim 9, characterized in that said burner comprises a first burner (210) and a second burner (220), said control means (120) comprising:

a second and gate circuit connected to the seventh smoke comparator and the second temperature comparator for outputting a first and gate signal if a smoke comparison signal indicating that the third air deflector is eligible to open and a temperature comparison signal indicating that the second condition is met are received, and otherwise outputting a second and gate signal;

19. A range hood as claimed in any one of claims 15 to 18, characterized in that said control device (120) further comprises:

the second timer is connected with the second AND gate circuit and used for timing the duration time of a second AND gate signal output by the second AND gate circuit after the first AND gate signal, and generating a second timing signal when the duration time exceeds second preset time;

and the fourth signal generator is connected with the second timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be closed based on the second timing signal and outputting the control signal to the driving mechanism.

20. A range hood according to claim 4, characterized in that said burner comprises a first burner (210) and a second burner (220), said control device (120) comprising:

a summing circuit connected to the heat release module (110) for calculating a sum of the temperatures of the first burner (210) and the second burner (220);

a third temperature comparator connected to the summing circuit for comparing a sum of the temperatures of the first burner (210) and the second burner (220) with a fourth temperature threshold and outputting a temperature comparison signal indicating whether a third condition is met, wherein the third condition is that the sum of the temperatures of the first burner (210) and the second burner (220) is greater than the fourth temperature threshold;

a third AND gate circuit, connected to the first smoke comparator and the third temperature comparator, for outputting a first AND gate signal if a smoke comparison signal indicating that the third air deflector is eligible to open and a temperature comparison signal indicating that the third condition is met are received, and otherwise outputting a second AND gate signal;

and the fifth signal generator is connected with the third AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to be opened based on the first AND gate signal output by the third AND gate circuit and outputting the control signal to the driving mechanism.

21. A range hood as claimed in claim 7, characterized in that said burner comprises a first burner (210) and a second burner (220), said control means (120) comprising:

a third and gate circuit, connected to the fourth smoke comparator and the third temperature comparator, for outputting a first and gate signal if a smoke comparison signal indicating that the third air deflector is eligible to open and a temperature comparison signal indicating that the third condition is met are received, and otherwise outputting a second and gate signal;

22. A range hood as claimed in claim 8, characterized in that said burner comprises a first burner (210) and a second burner (220), said control means (120) comprising:

a third and gate circuit, connected to one of the fifth smoke comparator and the sixth smoke comparator and the third temperature comparator, for outputting a first and gate signal if a smoke comparison signal indicating that the third air deflector is eligible to open and a temperature comparison signal indicating that the third condition is met are received, and otherwise outputting a second and gate signal;

23. A hood as claimed in claim 9, characterized in that said burner comprises a first burner (210) and a second burner (220), said control means (120) comprising:

a third and gate circuit, connected to the seventh smoke comparator and the third temperature comparator, for outputting a first and gate signal if a smoke comparison signal indicating that the third air deflector is eligible to open and a temperature comparison signal indicating that the third condition is met are received, and otherwise outputting a second and gate signal;

24. A hood as claimed in any one of claims 20 to 23, characterized in that said control means (120) further comprise:

the third timer is connected with the third AND gate circuit and used for timing the duration time of a second AND gate signal output by the third AND gate circuit after the first AND gate signal, and generating a third timing signal when the duration time exceeds a third preset time;

and the sixth signal generator is connected with the third timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the third air deflector to close based on the third timing signal and outputting the control signal to the driving mechanism.

25. A range hood according to claim 4, characterized in that said burner comprises a first burner (210) and/or a second burner (220), said control device (120) comprising:

a fourth temperature comparator connected to the heat releasing module (110) for comparing the temperature of the first burner (210) with a fifth temperature threshold and outputting a temperature comparison signal indicating whether a fourth condition is satisfied, wherein the fourth condition is that the temperature of the first burner (210) is greater than the fifth temperature threshold;

a fourth and gate circuit, connected to the first smoke comparator and to the fourth temperature comparator, for outputting a first and gate signal if a smoke comparison signal indicating that the first air deflector is eligible to open and a temperature comparison signal indicating that the fourth condition is met are received, and otherwise outputting a second and gate signal;

the seventh signal generator is connected with the fourth and-gate circuit and the driving mechanism, and is used for generating a control signal for controlling the driving mechanism to drive the first air deflector to be opened based on the first and-gate signal output by the fourth and-gate circuit and outputting the control signal to the driving mechanism; and/or the presence of a gas in the gas,

a fifth temperature comparator connected to the heat release module (110) for comparing the temperature of the second burner (220) with the fifth temperature threshold and outputting a temperature comparison signal indicating whether a fifth condition is met, wherein the fifth condition is that the temperature of the second burner (220) is greater than the fifth temperature threshold;

a fifth and-gate circuit, connected to the first smoke comparator and to the fifth temperature comparator, for outputting a first and-gate signal if a smoke comparison signal indicating that the second air deflector is eligible to open and a temperature comparison signal indicating that the fifth condition is met are received, and otherwise outputting a second and-gate signal;

and the eighth signal generator is connected with the fifth AND gate circuit and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the second air deflector to be opened based on the first AND gate signal output by the fifth AND gate circuit and outputting the control signal to the driving mechanism.

26. A hood, as set forth in claim 25, characterized in that said control device (120) further comprises:

the fourth timer is connected with the fourth AND gate circuit and used for timing the duration time of a second AND gate signal output by the fourth AND gate circuit after the first AND gate signal, and generating a fourth timing signal when the duration time exceeds a fourth preset time;

a ninth signal generator, connected to the fourth timer and the driving mechanism, for generating a control signal for controlling the driving mechanism to drive the first air deflector to close based on the fourth timing signal and outputting the control signal to the driving mechanism; and/or the presence of a gas in the gas,

the fifth timer is connected with the fifth AND gate circuit and used for timing the duration time of a second AND gate signal output by the fifth AND gate circuit after the first AND gate signal, and generating a fifth timing signal when the duration time exceeds a fifth preset time;

and the tenth signal generator is connected with the fifth timer and the driving mechanism and used for generating a control signal for controlling the driving mechanism to drive the second air deflector to close based on the fifth timing signal and outputting the control signal to the driving mechanism.

27. A hood as claimed in claim 5 or 6, characterized in that said burner comprises a first burner (210) and/or a second burner (220), said control means (120) comprising:

a fourth and gate circuit, connected to the second smoke comparator and to the fourth temperature comparator, for outputting a first and gate signal if a smoke comparison signal indicating that the first air deflector is eligible to open and a temperature comparison signal indicating that the fourth condition is met are received, and otherwise outputting a second and gate signal;

a fifth and-gate circuit, connected to the third smoke comparator and to the fifth temperature comparator, for outputting a first and-gate signal if a smoke comparison signal indicating that the second air deflector is eligible to open and a temperature comparison signal indicating that the fifth condition is met are received, and otherwise outputting a second and-gate signal;

28. A hood, as set forth in claim 27, characterized in that said control device (120) further comprises:

29. A range hood as claimed in any one of claims 1 to 9, characterized in that the range hood (100) further comprises a fan and a motor drive circuit (170), the fan comprising a total motor, the motor drive circuit (170) being connected with the control device (120) and the total motor;

the control device (120) is further used for generating a driving signal for controlling the working gear of the fan based on the temperature data and the smoke data;

the motor drive circuit (170) is configured to generate a drive current based on the drive signal and output the drive current to the overall motor.

30. A range hood as claimed in any one of claims 1 to 9, characterized in that the heat releasing module (110) and/or the smoke sensing module (160) are located in the middle of the top of the range hood (100).

31. A range hood according to any of claims 1 to 9, characterized in that the range hood (100) further comprises an input assembly for receiving user input air deflector indication information for indicating opening and closing of the air deflectors in the air deflector assembly (130),

the control device (120) is connected with the input assembly, and the control device (120) is further used for controlling the driving mechanism to drive the air deflectors to open and close based on the air deflector indication information.

32. A range hood as claimed in any one of claims 1 to 9, characterized in that the range hood (100) further comprises a switch control board (140) and a power board (150), the control device (120) comprises a first chip (122) and a second chip (124), the first chip (122) is integrated on the switch control board (140), the second chip (124) is integrated on the power board (150),

the first chip (122) is connected with the heat release module (110) and used for receiving the temperature data and transmitting the temperature data to the second chip (124);

the second chip (124) is respectively connected with the smoke sensing module (160) and the driving mechanism, and is used for receiving the temperature data and the smoke data and controlling the driving mechanism to drive the air deflectors to be opened and closed based on the temperature data and the smoke data.

33. A range hood as claimed in any of claims 3, 4, 6 to 9, wherein said driving mechanism comprises a lifting mechanism connected to said third air deflector,

the third air deflector is driven by the lifting mechanism to have a lifting closing position and a falling opening position, the third air inlet is closed when the third air deflector is located at the lifting closing position, and the third air inlet is opened when the third air deflector is located at the falling opening position.

34. A range hood as claimed in any one of claims 2 to 9, characterized in that the drive mechanism comprises a first tilting mechanism connected to the first air deflector and a second tilting mechanism connected to the second air deflector,

the first air deflector is driven by the first turnover mechanism to have a turnover opening position and a turnover closing position, the first air inlet is opened when the first air deflector is at the turnover opening position, the first air inlet is closed when the first air deflector is at the turnover closing position,

the second air deflector is driven by the second turnover mechanism to have a turnover opening position and a turnover closing position, the second air inlet is opened when the second air deflector is located at the turnover opening position, and the second air inlet is closed when the second air deflector is located at the turnover closing position.