CN113864842B - Fume exhaust fan - Google Patents
Fume exhaust fan Download PDFInfo
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- CN113864842B CN113864842B CN202111257581.3A CN202111257581A CN113864842B CN 113864842 B CN113864842 B CN 113864842B CN 202111257581 A CN202111257581 A CN 202111257581A CN 113864842 B CN113864842 B CN 113864842B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
- F24C15/00—Details
- F24C15/20—Removing cooking fumes
- F24C15/2021—Arrangement or mounting of control or safety systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The embodiment of the invention provides a smoke exhaust ventilator, which comprises a smoke exhaust ventilator detection module, a control module, a motor driving module and a motor; the oil smoke detection module is connected with the first input end of the control module, and is used for detecting the oil smoke concentration, outputting a first detection signal according to the oil smoke concentration and sending the first detection signal to the first input end of the control module; the control module is used for comparing the first detection signal with a first set threshold value and sending a starting instruction or a closing instruction to the motor driving module according to a comparison result; the motor driving module is used for controlling the motor to start when receiving a starting instruction and controlling the motor to be closed when receiving a closing instruction; the oil smoke detection module comprises a transformer, a first resistor and a detection unit, wherein the detection unit is used for adjusting the size of a first detection signal according to the oil smoke concentration and the operation of a user. The range hood provided by the embodiment of the invention can automatically start or stop the motor in the range hood according to the oil smoke concentration in a kitchen.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a range hood.
Background
With the rapid development of social economy, people have higher and higher requirements on the quality of social life and kitchen environment, and the smoke extractor is also more and more favored by users and plays an increasingly important role.
A range hood is an essential household appliance for users living in a cell. In the process of cooking, many users forget to turn on the smoke extractor because of being busy all the time, so that a lot of oil smoke in the kitchen is caused, and the smoke extractor is required to be turned on, so that a lot of oil smoke is accumulated in the kitchen. After some users fry dishes, forgetting to turn off the range hood in the kitchen can lead to the motor in the range hood to run all the time, and a large amount of electric energy is wasted. The existing smoke exhaust ventilator needs to be manually opened or closed, cannot be controlled automatically, is not intelligent enough, and is inconvenient.
Disclosure of Invention
The range hood provided by the embodiment of the invention can automatically start or stop the motor in the range hood according to the oil smoke concentration in a kitchen.
The embodiment of the invention provides a smoke exhaust ventilator, which comprises a smoke exhaust ventilator detection module, a control module, a motor driving module and a motor;
the oil smoke detection module is connected with the first input end of the control module, and is used for detecting the oil smoke concentration, outputting a first detection signal according to the oil smoke concentration and sending the first detection signal to the first input end of the control module;
the first output end of the control module is connected with the motor driving module, and the control module is used for comparing the first detection signal with a first set threshold value and sending a starting instruction or a closing instruction to the motor driving module according to a comparison result;
the motor driving module is used for controlling the motor to start when receiving the starting instruction and controlling the motor to be closed when receiving the closing instruction;
the oil smoke detection module comprises a transformer, a first resistor and a detection unit, wherein the primary side of the transformer is connected with a mains supply, the first end of the secondary side of the transformer is connected with the first end of the first resistor, the second end of the secondary side of the transformer is grounded, the third end of the transformer is connected with the first end of the detection unit, the second end of the detection unit is connected with the second end of the first resistor, the third end of the detection unit is connected with the first input end of the control module, and the fourth end of the detection unit is grounded;
the detection unit is used for adjusting the size of the first detection signal according to the oil smoke concentration and the operation of a user.
Optionally, the oil smoke detection module further comprises a power supply unit, and the power supply unit is used for inputting a stable power supply signal to the control module;
the first end of the power supply unit is connected with the third end of the secondary side of the transformer, the second end of the power supply unit is connected with the third end of the detection unit, the third end of the power supply unit is connected with the power input end of the control module, and the fourth end of the power supply unit is grounded.
Optionally, the detection unit comprises a gas sensor, a second resistor, a temperature compensator, a precision potentiometer, a second resistor, a third resistor, a fourth resistor, a first diode and a first capacitor;
the first end of the gas sensor is connected with the third end of the transformer, the second end of the gas sensor is connected with the second end of the first resistor, the third end of the gas sensor is connected with the first end of the second resistor, and the fourth end of the gas sensor is connected with the first end of the temperature compensator;
the second end of the second resistor is connected with the first end of the precision potentiometer;
the second end of the precision potentiometer is connected with the positive electrode end of the first diode, and the third end of the precision potentiometer is connected with the first end of the fourth resistor;
the negative electrode end of the first diode is connected with the first end of the first capacitor, the second end of the power supply unit and the first input end of the control module;
the second end of the temperature compensator is connected with the first end of the third resistor;
the second end of the third resistor is grounded;
the second end of the fourth resistor is grounded;
the second end of the first capacitor is grounded;
the temperature compensator is used for enabling the detection units to have the same precision in detecting the same oil smoke concentration at different ambient temperatures;
the precision potentiometer is used for controlling the magnitude of the first detection signal.
Optionally, the power supply unit includes a second diode, a second capacitor, a fifth resistor, a third diode, a voltage regulator tube and a third capacitor;
the anode end of the second diode is connected with the third end of the secondary side of the transformer, and the cathode end of the second diode is connected with the first end of the second capacitor and the first end of the fifth resistor;
the second end of the fifth resistor is connected with the cathode end of the third diode, the cathode end of the voltage stabilizing tube, the first end of the third capacitor and the power input end of the control module;
the anode end of the third diode is connected with the third end of the detection unit;
the second end of the second capacitor is grounded;
the anode end of the voltage stabilizing tube is grounded;
the second end of the third capacitor is grounded.
Optionally, the motor driving module comprises a sixth resistor, a triode and a relay;
the first end of the sixth resistor is connected with the first output end of the control module, and the second end of the sixth resistor is connected with the grid electrode of the triode;
the first electrode of the triode is grounded, and the second electrode of the triode is connected with the first end of the relay;
the second end of the relay is connected with the first end of the mains supply, the third end of the relay is connected with the first end of the motor, and the fourth end of the relay is grounded;
the second end of the motor is connected with the second end of the mains supply.
Optionally, the range hood provided by the embodiment of the invention further comprises a liquid level detection module and a liquid level alarm module;
the liquid level detection module is connected with the second input end of the control module and is used for detecting the liquid level of waste oil in the smoke exhaust ventilator, converting the liquid level of the waste oil into a second detection signal and sending the second detection signal to the control module;
the second output end of the control module is connected with the liquid level alarm module, and the control module is used for judging whether the liquid level of the waste oil exceeds a second set threshold value according to the second detection signal and sending a high-level signal to the liquid level alarm module when the liquid level of the waste oil exceeds the second set threshold value;
and the liquid level alarm module sends out an alarm prompt when receiving the high-level signal.
Optionally, the liquid level alarm module comprises a first nand gate, a second nand gate, a third nand gate, a fourth nand gate, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a fourth capacitor, a fifth capacitor and a buzzer;
the first input end of the first NAND gate is connected with the second output end of the control module and the first end of the seventh resistor, the second input end of the first NAND gate is connected with the first end of the eighth resistor, and the output end of the first NAND gate is connected with the first end of the ninth resistor, the first input end of the second NAND gate and the second input end of the second NAND gate;
the second end of the seventh resistor is connected with the output end of the second NAND gate, the first end of the fourth capacitor and the first input end of the third NAND gate;
the second end of the eighth resistor is connected with the second end of the ninth resistor and the second end of the fourth capacitor;
the second input end of the third NAND gate is connected with the first end of the tenth resistor, and the output end of the third NAND gate is connected with the first end of the eleventh resistor, the first end of the buzzer, the first input end of the fourth NAND gate and the second input end of the fourth NAND gate;
the second end of the tenth resistor is connected with the second end of the eleventh resistor and the first end of the fifth capacitor;
and the output end of the fourth NAND gate is connected with the second end of the fifth capacitor and the second end of the buzzer.
Optionally, the range hood provided by the embodiment of the invention further comprises a voice control module;
the voice control module is connected with a third input end of the control module;
the voice control module is used for receiving voice information output by a user, outputting a motor starting instruction or a motor closing instruction according to the voice information and sending the motor starting instruction or the motor closing instruction to the control module;
the control module is also used for sending a starting instruction to the motor driving module according to the motor starting instruction or sending a closing instruction to the motor driving module according to the motor closing instruction.
Optionally, the range hood provided by the embodiment of the invention further comprises a display module;
the third output end of the control module is connected with the display module, and the control module is used for outputting an oil smoke concentration value to the display module according to the first detection signal and outputting a waste oil liquid level value to the display module according to the second detection signal;
the display module is used for displaying the oil smoke concentration value and the waste oil liquid level value.
Optionally, the range hood provided by the embodiment of the invention further comprises an illumination module;
the lighting module includes an LED.
The embodiment of the invention provides a range hood, which is provided with a lampblack detection module for detecting lampblack concentration in a kitchen and outputting a first detection signal to a control module according to the lampblack concentration, wherein the control module can send a starting instruction to a motor driving module to control the starting of a motor when the first detection signal is larger than a first set threshold value so as to reduce the lampblack concentration in the kitchen, and can also send a closing instruction to the motor driving module to control the closing of the motor when the first detection signal is smaller than the first set threshold value so as to close the motor when the lampblack concentration in the kitchen is smaller. The range hood provided by the embodiment of the invention can automatically start or stop the motor in the range hood according to the oil smoke concentration in a kitchen.
Drawings
Fig. 1 is a schematic structural view of a range hood according to an embodiment of the present invention;
fig. 2 is a schematic structural view of another range hood according to an embodiment of the present invention;
fig. 3 is a schematic structural view of another range hood according to an embodiment of the present invention;
fig. 4 is a schematic structural view of still another range hood according to an embodiment of the present invention;
fig. 5 is a schematic structural view of another range hood according to an embodiment of the present invention;
fig. 6 is a schematic structural view of another range hood according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another range hood according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the drawings and examples. It should be understood that the particular embodiments described herein are illustrative only and are not limiting of embodiments of the invention. It should be further noted that, for convenience of description, only some, but not all of the structures related to the embodiments of the present invention are shown in the drawings.
Fig. 1 is a schematic structural diagram of a range hood according to an embodiment of the present invention, and referring to fig. 1, the range hood according to an embodiment of the present invention includes a range hood detection module 110, a control module 120, a motor driving module 130, and a motor 140; the oil smoke detection module 110 is connected with the first input end of the control module 120, and the oil smoke detection module 110 is used for detecting the oil smoke concentration and outputting a first detection signal according to the oil smoke concentration to be sent to the first input end of the control module 120; the first output end of the control module 120 is connected with the motor driving module 130, and the control module 120 is used for comparing the first detection signal with a first set threshold value and sending a start instruction or a close instruction to the motor driving module 130 according to a comparison result; the motor driving module 130 is used for controlling the motor 140 to start when receiving a starting instruction, and is also used for controlling the motor 140 to be turned off when receiving a turning-off instruction; the oil smoke detection module 110 comprises a transformer 111, a first resistor R1 and a detection unit 112, wherein the primary side of the transformer 111 is connected with the mains supply, the first end of the secondary side of the transformer 111 is connected with the first end of the first resistor R1, the second end of the secondary side of the transformer 111 is grounded, the third end of the transformer 111 is connected with the first end of the detection unit 112, the second end of the detection unit 112 is connected with the second end of the first resistor R1, the third end of the detection unit 112 is connected with the first input end of the control module 120, and the fourth end of the detection unit 112 is grounded; the detection unit 112 is used for adjusting the magnitude of the first detection signal according to the oil smoke concentration and the operation of the user.
Specifically, the transformer 111 is used for converting the mains supply into a voltage required by the soot detection module 110 during normal operation. The resistance value of the first resistor R1 may be 5.6Ω. The size of the first detection signal is related to the oil smoke concentration in the kitchen and the operation of the user, under the operation of the user, the size of the first detection signal output by the oil smoke detection module 110 under different oil smoke concentrations can be the same, and the user can determine which oil smoke concentration the motor is started under according to the actual needs. If the first detection signal increases along with the increase of the oil smoke concentration, then the control module 120 can send a start command to the motor driving module 130 when the first detection signal is greater than the first set threshold, and can also send a closing command to the motor driving module 130 when the first detection signal is smaller than the first set threshold.
The embodiment of the invention provides a range hood, which is provided with a lampblack detection module for detecting lampblack concentration in a kitchen and outputting a first detection signal to a control module according to the lampblack concentration, wherein the control module can send a starting instruction to a motor driving module to control the starting of a motor when the first detection signal is larger than a first set threshold value so as to reduce the lampblack concentration in the kitchen, and can also send a closing instruction to the motor driving module to control the closing of the motor when the first detection signal is smaller than the first set threshold value so as to close the motor when the lampblack concentration in the kitchen is smaller. The range hood provided by the embodiment of the invention can automatically start or stop the motor in the range hood according to the oil smoke concentration in a kitchen.
Optionally, fig. 2 is a schematic structural diagram of still another range hood according to an embodiment of the present invention, referring to fig. 2, the range hood detection module 110 further includes a power supply unit 113, where the power supply unit 113 is configured to input a stable power signal to the control module 120; the first end of the power supply unit 113 is connected to the third end of the secondary side of the transformer 111, the second end of the power supply unit 113 is connected to the third end of the detection unit 112, the third end of the power supply unit 113 is connected to the power input end of the control module 120, and the fourth end of the power supply unit 113 is grounded.
Specifically, the oil smoke detection module 110 can be reused as the power supply of the control module 120, and provides a stable power supply signal for the control module 120, so that the control module 120 is not required to be connected with a new power supply module, and the manufacturing cost of the range hood is reduced.
Optionally, fig. 3 is a schematic structural diagram of still another range hood according to an embodiment of the present invention, referring to fig. 3, the detection unit includes a gas sensor QM, a second resistor R2, a temperature compensator RP, a precision potentiometer RM, a third resistor R3, a fourth resistor R4, a first diode V1, and a first capacitor C1; the first end of the gas sensor QM is connected to the third end of the transformer 111, the second end of the gas sensor QM is connected to the second end of the first resistor R1, the third end of the gas sensor QM is connected to the first end of the second resistor R2, and the fourth end of the gas sensor QM is connected to the first end of the temperature compensator RP; the second end of the second resistor R2 is connected with the first end of the precision potentiometer RM; the second end of the precision potentiometer RM is connected with the positive electrode end of the first diode V1, and the third end of the precision potentiometer RM is connected with the first end of the fourth resistor R4; the negative terminal of the first diode V1 is connected to the first terminal of the first capacitor C1, the second terminal of the power supply unit and the first input terminal of the control module 120; the second end of the temperature compensator RP is connected with the first end of the third resistor R3; the second end of the third resistor R3 is grounded; the second end of the fourth resistor R4 is grounded; the second end of the first capacitor C1 is grounded; the temperature compensator RP is used for enabling the detection units to have the same accuracy in detecting the same lampblack concentration at different ambient temperatures; the precision potentiometer RM is used for controlling the magnitude of the first detection signal.
Specifically, the voltage of the third terminal of the transformer 111 input to the gas sensor QM may be 3V. The first capacitance C1 may be 1 μf in size. The gas sensor QM is used for detecting the concentration of the oil smoke, and when the concentration of the oil smoke in the kitchen rises, the voltage across the gas sensor QM increases, so that the first detection signal increases. The size of the temperature compensator RP varies with a change in temperature, and the temperature compensator RP may be a variable resistor. Since the gas sensor QM is susceptible to temperature, when the concentration of the oil smoke in the kitchen is the same, voltages at both ends of the same gas sensor QM are different at different temperatures, and thus the temperature compensator RP is provided to compensate for a fluctuation value of the gas sensor QM due to temperature influence, thereby improving the detection accuracy of the oil smoke detection module 110. The size of the precision potentiometer RM can also be changed, and when the sizes of the precision potentiometers RM are different under the same oil smoke concentration, the sizes of the first detection signals are different, and a user can control the starting of the motor 140 under what oil smoke concentration by adjusting the sizes of the precision potentiometers RM.
Optionally, with continued reference to fig. 3, the power supply unit includes a second diode V2, a second capacitor C2, a fifth resistor R5, a third diode V3, a voltage regulator VZ, and a third capacitor C3; the anode terminal of the second diode V2 is connected to the third terminal of the secondary side of the transformer 111, and the cathode terminal of the second diode V2 is connected to the first terminal of the second capacitor C2 and the first terminal of the fifth resistor R5; the second end of the fifth resistor R5 is connected with the cathode end of the third diode V3, the cathode end of the voltage stabilizing tube VZ, the first end of the third capacitor C3 and the power input end of the control module 120; the anode end of the third diode V3 is connected with the third end of the detection unit; the second end of the second capacitor C2 is grounded; the anode end of the voltage stabilizing tube VZ is grounded; the second end of the third capacitor C3 is grounded.
Specifically, the voltage of the third terminal of the transformer 111 input to the anode terminal of the second diode V2 may be 5V, and the second diode V2, the second capacitor C2 and the fifth resistor R5 are used for rectifying and filtering. The resistance of the fifth resistor R5 may be 220 Ω, the size of the second capacitor C2 may be 100 μf, the size of the third capacitor C3 may be 47 μf, and the voltage regulator VZ is used for voltage regulation to ensure that the voltage input by the power input terminal of the control module 120 is constant, and the power supply unit may provide the control module 120 with a power of 5.6V.
Optionally, fig. 4 is a schematic structural diagram of still another range hood according to an embodiment of the present invention, and referring to fig. 4, the motor driving module 130 includes a sixth resistor R6, a triode T and a relay 131; a first end of a sixth resistor R6 is connected with the first output end of the control module 120, and a second end of the sixth resistor R6 is connected with the grid electrode of the triode T; the first pole of the triode T is grounded, and the second pole of the triode T is connected with the first end of the relay 131; the second end of the relay 131 is connected with the first end of the mains supply, the third end of the relay 131 is connected with the first end of the motor 140, and the fourth end of the relay 131 is grounded; a second end of the motor 140 is connected to a second end of the mains supply.
Specifically, when the control module 120 detects that the first detection signal is greater than the first set threshold, the first output end of the control module 120 outputs a high-level signal to the motor driving module 130, the triode T is turned on when the motor driving module 130 receives the high-level signal, and the coil in the relay 131 is electrically conductive to attract the normally open switch of the relay 131, so that the motor 140 is electrified, the motor 140 can drive the blades to rotate after being electrified, suction force is generated when the blades rotate, and oil smoke in the kitchen is sucked out. When the control module 120 detects that the first detection signal is smaller than the first set threshold, the first output end of the control module 120 outputs a low-level signal to the motor driving module 130, and when the motor driving module 130 receives the low-level signal, the triode T is turned off, and the motor 140 is powered off and turned off. The transistor T in the motor driving module 130 has the function of protecting the control module 120, and the transistor T can prevent the 220V strong current from being connected into the control module 120 in series to burn the control module 120.
Optionally, fig. 5 is a schematic structural diagram of another range hood according to an embodiment of the present invention, and referring to fig. 5, the range hood according to an embodiment of the present invention further includes a liquid level detection module 150 and a liquid level alarm module 160; the liquid level detection module 150 is connected to the second input end of the control module 120, and the liquid level detection module 150 is configured to detect a liquid level of waste oil in the range hood, convert the liquid level of waste oil into a second detection signal, and send the second detection signal to the control module 120; the second output end of the control module 120 is connected with the liquid level alarm module 160, and the control module 120 is configured to determine whether the liquid level of the waste oil exceeds a second set threshold according to the second detection signal, and send a high level signal to the liquid level alarm module 160 when the liquid level of the waste oil exceeds the second set threshold; the liquid level alarm module 160 sends out an alarm prompt when receiving the high level signal.
Specifically, the waste oil of smoke ventilator the inside is used for collecting the oil smoke, if waste oil in the waste oil is full, the user forgets timely clearance, and waste oil can ooze out in the time of cooking, leads to bad user experience. When the second detection signal exceeds the second set threshold, which indicates that the waste oil level in the waste oil tank has reached the maximum value stored in the waste oil tank, the control module 120 sends a high-level signal to the liquid level alarm module 160, and the liquid level alarm module 160 sends an alarm prompt when receiving the high-level signal, wherein the alarm prompt can be a lamp light flashing prompt or a sound prompt, so that a user is reminded of timely processing the waste oil in the waste oil tank.
Optionally, fig. 6 is a schematic structural diagram of still another range hood according to an embodiment of the present invention, referring to fig. 6, the liquid level alarm module 160 includes a first nand gate U1, a second nand gate U2, a third nand gate U3, a fourth nand gate U4, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a fourth capacitor C4, a fifth capacitor C5, and a buzzer 161; the first input end of the first NAND gate U1 is connected with the second output end of the control module 120 and the first end of the seventh resistor R7, the second input end of the first NAND gate U1 is connected with the first end of the eighth resistor R8, and the output end of the first NAND gate U1 is connected with the first end of the ninth resistor R9, the first input end of the second NAND gate U2 and the second input end of the second NAND gate U2; the second end of the seventh resistor R7 is connected with the output end of the second NAND gate U2, the first end of the fourth capacitor C4 and the first input end of the third NAND gate U3; the second end of the eighth resistor R8 is connected with the second end of the ninth resistor R9 and the second end of the fourth capacitor C4; the second input end of the third NAND gate U3 is connected with the first end of the tenth resistor R10, and the output end of the third NAND gate U3 is connected with the first end of the eleventh resistor R11, the first end of the buzzer 161, the first input end of the fourth NAND gate U4 and the second input end of the fourth NAND gate U4; the second end of the tenth resistor R10 is connected with the second end of the eleventh resistor R11 and the first end of the fifth capacitor C5; the output terminal of the fourth nand gate U4 is connected to the second terminal of the fifth capacitor C5 and the second terminal of the buzzer 161.
Specifically, when the first input end of the first nand gate U1 receives the high level signal, the output end of the second nand gate U2 outputs the square wave signal, and when the first input end of the third nand gate U3 receives the high level signal output by the output end of the second nand gate U2, the buzzer 161 sounds, so as to remind a user to process the waste oil in the waste oil tank in time. When the first input terminal of the first nand gate U1 receives the low level signal, the buzzer 161 does not operate.
Optionally, fig. 7 is a schematic structural diagram of another range hood according to an embodiment of the present invention, and referring to fig. 7, the range hood according to an embodiment of the present invention further includes a voice control module 170; the voice control module 170 is connected to a third input of the control module 120; the voice control module 170 is configured to receive voice information output by a user, output a motor on command or a motor off command according to the voice information, and send the motor on command or the motor off command to the control module 120; the control module 120 is further configured to send a start command to the motor driving module 130 according to a start motor command or send a close command to the motor driving module 130 according to a close motor command.
For example, when the user needs the range hood to remove the oil smoke in the kitchen, the user can say "start the range hood" to the range hood, after receiving the voice information, the voice control module 170 compares with the stored voice command password, if the voice command password is correct, sends a motor starting instruction to the control module 120, and after receiving the motor starting instruction, the control module 120 sends a starting instruction to the motor driving module 130, so as to control the motor 140 to start. The voice control module 170 is provided to control the start and stop of the motor 140 without manual operation of the user when the oil smoke detection module 110 fails.
Optionally, with continued reference to fig. 7, the range hood provided by the embodiment of the present invention further includes a display module 180; the third output end of the control module 120 is connected with the display module 180, and the control module 120 is configured to output a smoke concentration value to the display module 180 according to the first detection signal and output a waste oil level value to the display module 180 according to the second detection signal; the display module 180 is used for displaying the oil smoke concentration value and the waste oil level value.
Specifically, the control module 120 may output the oil smoke concentration value in the current kitchen according to the first detection signal, and may output the waste oil level value in the current waste oil tank according to the second detection signal, so that the user may view the waste oil level value in the current waste oil tank and the oil smoke concentration value in the current kitchen in real time through the display module 180. The display module 180 may include a liquid crystal display or an LED display.
Optionally, the range hood provided by the embodiment of the invention further comprises an illumination module; the lighting module includes an LED.
Specifically, the lighting module is used for lighting, and can provide enough brightness for a user at night when cooking and cooking. The LED has the characteristics of long service life, electricity saving, low cost and the like, and the cost of the smoke exhaust ventilator can be reduced by the aid of the LED.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the embodiments of the present invention are not limited to the particular embodiments described herein, but are capable of numerous obvious changes, rearrangements and substitutions without departing from the scope of the embodiments of the present invention. Therefore, while the embodiments of the present invention have been described in connection with the above embodiments, the embodiments of the present invention are not limited to the above embodiments, but may include many other equivalent embodiments without departing from the spirit of the embodiments of the present invention, and the scope of the embodiments of the present invention is determined by the scope of the appended claims.
Claims (9)
1. The smoke exhaust ventilator is characterized by comprising a smoke detection module, a control module, a motor driving module and a motor;
the oil smoke detection module is connected with the first input end of the control module, and is used for detecting the oil smoke concentration, outputting a first detection signal according to the oil smoke concentration and sending the first detection signal to the first input end of the control module;
the first output end of the control module is connected with the motor driving module, and the control module is used for comparing the first detection signal with a first set threshold value and sending a starting instruction or a closing instruction to the motor driving module according to a comparison result;
the motor driving module is used for controlling the motor to start when receiving the starting instruction and controlling the motor to be closed when receiving the closing instruction;
the oil smoke detection module comprises a transformer, a first resistor and a detection unit, wherein the primary side of the transformer is connected with a mains supply, the first end of the secondary side of the transformer is connected with the first end of the first resistor, the second end of the secondary side of the transformer is grounded, the third end of the transformer is connected with the first end of the detection unit, the second end of the detection unit is connected with the second end of the first resistor, the third end of the detection unit is connected with the first input end of the control module, and the fourth end of the detection unit is grounded;
the detection unit is used for adjusting the size of the first detection signal according to the oil smoke concentration and the operation of a user;
the motor driving module comprises a sixth resistor, a triode and a relay;
the first end of the sixth resistor is connected with the first output end of the control module, and the second end of the sixth resistor is connected with the grid electrode of the triode;
the first electrode of the triode is grounded, and the second electrode of the triode is connected with the first end of the relay;
the second end of the relay is connected with the first end of the mains supply, the third end of the relay is connected with the first end of the motor, and the fourth end of the relay is grounded;
the second end of the motor is connected with the second end of the mains supply.
2. The range hood of claim 1, wherein the range hood detection module further comprises a power supply unit for inputting a stable power signal to the control module;
the first end of the power supply unit is connected with the third end of the secondary side of the transformer, the second end of the power supply unit is connected with the third end of the detection unit, the third end of the power supply unit is connected with the power input end of the control module, and the fourth end of the power supply unit is grounded.
3. The range hood of claim 2, wherein the detection unit comprises a gas sensor, a second resistor, a temperature compensator, a precision potentiometer, a second resistor, a third resistor, a fourth resistor, a first diode, and a first capacitor;
the first end of the gas sensor is connected with the third end of the transformer, the second end of the gas sensor is connected with the second end of the first resistor, the third end of the gas sensor is connected with the first end of the second resistor, and the fourth end of the gas sensor is connected with the first end of the temperature compensator;
the second end of the second resistor is connected with the first end of the precision potentiometer;
the second end of the precision potentiometer is connected with the positive electrode end of the first diode, and the third end of the precision potentiometer is connected with the first end of the fourth resistor;
the negative electrode end of the first diode is connected with the first end of the first capacitor, the second end of the power supply unit and the first input end of the control module;
the second end of the temperature compensator is connected with the first end of the third resistor;
the second end of the third resistor is grounded;
the second end of the fourth resistor is grounded;
the second end of the first capacitor is grounded;
the temperature compensator is used for enabling the detection units to have the same precision in detecting the same oil smoke concentration at different ambient temperatures;
the precision potentiometer is used for controlling the magnitude of the first detection signal.
4. The range hood of claim 2, wherein the power supply unit includes a second diode, a second capacitor, a fifth resistor, a third diode, a regulator tube, and a third capacitor;
the anode end of the second diode is connected with the third end of the secondary side of the transformer, and the cathode end of the second diode is connected with the first end of the second capacitor and the first end of the fifth resistor;
the second end of the fifth resistor is connected with the cathode end of the third diode, the cathode end of the voltage stabilizing tube, the first end of the third capacitor and the power input end of the control module;
the anode end of the third diode is connected with the third end of the detection unit;
the second end of the second capacitor is grounded;
the anode end of the voltage stabilizing tube is grounded;
the second end of the third capacitor is grounded.
5. The range hood of claim 1, further comprising a liquid level detection module and a liquid level alarm module;
the liquid level detection module is connected with the second input end of the control module and is used for detecting the liquid level of waste oil in the smoke exhaust ventilator, converting the liquid level of the waste oil into a second detection signal and sending the second detection signal to the control module;
the second output end of the control module is connected with the liquid level alarm module, and the control module is used for judging whether the liquid level of the waste oil exceeds a second set threshold value according to the second detection signal and sending a high-level signal to the liquid level alarm module when the liquid level of the waste oil exceeds the second set threshold value;
and the liquid level alarm module sends out an alarm prompt when receiving the high-level signal.
6. The range hood of claim 5, wherein the liquid level alarm module comprises a first nand gate, a second nand gate, a third nand gate, a fourth nand gate, a seventh resistor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a fourth capacitor, a fifth capacitor, and a buzzer;
the first input end of the first NAND gate is connected with the second output end of the control module and the first end of the seventh resistor, the second input end of the first NAND gate is connected with the first end of the eighth resistor, and the output end of the first NAND gate is connected with the first end of the ninth resistor, the first input end of the second NAND gate and the second input end of the second NAND gate;
the second end of the seventh resistor is connected with the output end of the second NAND gate, the first end of the fourth capacitor and the first input end of the third NAND gate;
the second end of the eighth resistor is connected with the second end of the ninth resistor and the second end of the fourth capacitor;
the second input end of the third NAND gate is connected with the first end of the tenth resistor, and the output end of the third NAND gate is connected with the first end of the eleventh resistor, the first end of the buzzer, the first input end of the fourth NAND gate and the second input end of the fourth NAND gate;
the second end of the tenth resistor is connected with the second end of the eleventh resistor and the first end of the fifth capacitor;
and the output end of the fourth NAND gate is connected with the second end of the fifth capacitor and the second end of the buzzer.
7. The range hood of claim 1, further comprising a voice control module;
the voice control module is connected with a third input end of the control module;
the voice control module is used for receiving voice information output by a user, outputting a motor starting instruction or a motor closing instruction according to the voice information and sending the motor starting instruction or the motor closing instruction to the control module;
the control module is also used for sending a starting instruction to the motor driving module according to the motor starting instruction or sending a closing instruction to the motor driving module according to the motor closing instruction.
8. The range hood of claim 5, further comprising a display module;
the third output end of the control module is connected with the display module, and the control module is used for outputting an oil smoke concentration value to the display module according to the first detection signal and outputting a waste oil liquid level value to the display module according to the second detection signal;
the display module is used for displaying the oil smoke concentration value and the waste oil liquid level value.
9. The range hood of claim 1, further comprising an illumination module;
the lighting module includes an LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111257581.3A CN113864842B (en) | 2021-10-27 | 2021-10-27 | Fume exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111257581.3A CN113864842B (en) | 2021-10-27 | 2021-10-27 | Fume exhaust fan |
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| Publication Number | Publication Date |
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| CN113864842A CN113864842A (en) | 2021-12-31 |
| CN113864842B true CN113864842B (en) | 2023-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111257581.3A Active CN113864842B (en) | 2021-10-27 | 2021-10-27 | Fume exhaust fan |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6765184B2 (en) * | 2002-07-26 | 2004-07-20 | Samsung Electronics Co., Ltd. | Smoke guiding apparatus of wall-mounted microwave oven |
| CN1766427A (en) * | 2004-10-28 | 2006-05-03 | 王秀泉 | Air conditioning smoke exhaust ventilator with air flow collection cover system |
| CN201199064Y (en) * | 2008-03-31 | 2009-02-25 | 浙江帅康电气股份有限公司 | Cooking fume exhauster with liquid level detecting and alarming functions |
| CN203433301U (en) * | 2013-09-05 | 2014-02-12 | 北京联合大学 | An automatic controller for a smoke exhaust ventilator |
| CN105423387A (en) * | 2015-12-16 | 2016-03-23 | 成都飞凯瑞科技有限公司 | Energy-saving control based on hybrid multiple circuits for range hood |
| CN206352849U (en) * | 2016-12-16 | 2017-07-25 | 李政驰 | A kind of intelligent range hood |
| CN210292022U (en) * | 2019-07-22 | 2020-04-10 | 深圳市中威厨房设备有限公司 | Intelligent energy-concerving and environment-protective petticoat pipe |
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