CN203478397U - Range hood with automatic opening/closing air door - Google Patents
Range hood with automatic opening/closing air door Download PDFInfo
- Publication number
- CN203478397U CN203478397U CN201320595435.6U CN201320595435U CN203478397U CN 203478397 U CN203478397 U CN 203478397U CN 201320595435 U CN201320595435 U CN 201320595435U CN 203478397 U CN203478397 U CN 203478397U
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- China
- Prior art keywords
- motor
- range hood
- air door
- control circuit
- microcontroller
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Abstract
The utility model discloses a range hood with an automatic opening/closing air door, which comprises a housing as well as a fan system and a controller which are arranged in the housing, wherein an air inlet is formed at the front part of the housing; an opening/closing air door is hinged at the air inlet; a motor for driving to open/close the air door and a control unit for controlling the motor to work are also arranged in the housing; the control unit comprises a microcontroller and a motor reversing and control circuit connected with the microcontroller; the motor is electrically connected with the motor reversing and control circuit; a current detector is arranged on a loop between the motor and the motor reversing and control circuit; the current detector is connected with the microcontroller through a current signal adjusting circuit. The range hood disclosed by the utility model has the beneficial effects that an additional position sensor is not needed, the line design is simplified, and the working reliability is improved; meanwhile, the air door realizes an obstacle-encountering self-stop protection function in door opening and closing.
Description
Technical field
The utility model relates to a kind of range hood, relates in particular to the range hood that a kind of air door can automatic open-close.
Background technology
While working in order to increase lampblack absorber aesthetic appearance and to improve range hood, the effect of mist extractor, opens the lampblack absorber of closing while not working when design can be worked the air door in smoking chamber (panel).The airdoor control of lampblack absorber product adopts the method for position sensor detection position more in the market, and this kind of method increased complex circuit degree, reduced product reliability.For this reason, design and a kind ofly by detecting actuating motor operating current, determine whether lampblack absorber air door is opened and put in place and close the method putting in place and eliminate these drawbacks.
Utility model content
Technical problem to be solved in the utility model is to overcome the deficiency of above-mentioned prior art, provides a kind of air door to put in place or to close the lampblack absorber putting in place by automatic open-close.
The air door providing according to utility model can automatic open-close the main technical schemes that adopts of range hood be: comprise casing, be arranged on blower fan system and controller in described casing, described casing front portion is provided with air inlet, described air inlet place is hinged with air door that can folding, in described casing, be also provided with the motor that drives described air door folding, control the control module of described machine operation, only stop the position-limit mechanism of described motor and be the power module of described motor and described control module power supply, described control module comprises microcontroller, be connected motor commutation and control circuit with described microcontroller, described motor is electrically connected to described motor commutation and control circuit, loop between described motor and described motor commutation and control circuit is provided with current detector, described current detector is connected with described microcontroller by a current signal Circuit tuning.
The air door that utility model provides can automatic open-close range hood also adopt following attached technical scheme:
Described motor commutation and control circuit are connected and composed by switching tube Q3, switching tube Q4, switching tube Q5, switching tube Q6, the input of described motor commutation and control circuit is connected with described power module, the control end of described motor commutation and control circuit is connected with described microcontroller, and the output of described motor commutation and control circuit is connected with described motor.
Described current detector is a current sampling resistor R19, and described current sampling resistor R19 gives described current signal Circuit tuning by sampled signal, and described current signal Circuit tuning becomes direct current signal by sampled signal and sends microcontroller to.
The low-pass filter circuit of described current signal Circuit tuning for being connected and composed by resistance R 20 and capacitor C 12.
Also comprise by described motor-driven decelerator, between described decelerator and described air door, by link gear, be connected.
Described position-limit mechanism comprises synchronizes rotary spacing dish and is fixed on the positive stop on described casing with motor shaft, described position-arresting disk is provided with opens screens and closed screens, described positive stop and described unlatching screens and closed clamping matching.
In described casing, be provided with a fixed head vertical with described air door, described motor and described decelerator are arranged on described fixed head one side, and the output shaft of described decelerator is connected with described link gear through described fixed head.
Described position-arresting disk is arranged on the output shaft of described decelerator, and described positive stop is fixed on described fixed head.
Described position-arresting disk is provided with deep-slotted chip breaker, and described positive stop is positioned at described deep-slotted chip breaker, and one end of described deep-slotted chip breaker is for opening screens, and the other end of described deep-slotted chip breaker is closed screens.
The air door providing according to utility model can automatic open-close range hood compared with prior art tool have the following advantages: first, the utility model by arranging the position-limit mechanism that only stops electric machine rotation in casing, control module at motor arranges current detector simultaneously, by detecting the curent change of motor current supply circuit, to control motor forward, reversion, stop, making air door realize automatic open-close puts in place and closes and put in place, this structure does not need to arrange extra position sensor again, simplify line design, increase functional reliability, air door has been realized the automatic stop defencive function that is hampered that opens the door and close the door simultaneously, secondly, the position-limit mechanism in the utility model is simple in structure, and parts are few, without being arranged between air door and casing, make the profile of product more neat and artistic.
Accompanying drawing explanation
Fig. 1 is the schematic block circuit diagram of utility model.
Fig. 2 is the circuit theory diagrams of utility model.
Fig. 3 is the partial sectional view of utility model.
Fig. 4 is the syndeton schematic diagram one of fixed head in utility model, motor, decelerator and position-limit mechanism.
Fig. 5 is the syndeton schematic diagram two of fixed head in utility model, motor, decelerator and position-limit mechanism.
Fig. 6 is the structure enlarged drawing of A in Fig. 5.
The specific embodiment
Referring to Fig. 1 and Fig. 2, the air door providing according to utility model can automatic open-close range hood embodiment, comprise casing 1, be arranged on blower fan system and controller in described casing 1, described casing 1 front portion is provided with air inlet 11, described air inlet 11 places are hinged with air door 2 that can folding, in described casing 1, be also provided with the motor 3 that drives described air door 2 foldings, control the control module of described motor 3 work, only stop the position-limit mechanism of described motor 3 and be the power module 4 of described motor 3 and described control module power supply, described control module comprises microcontroller 51, the motor commutation and the control circuit 52 that are connected with described microcontroller 51, described motor 3 is electrically connected to described motor commutation and control circuit 52, loop between described motor 3 and described motor commutation and control circuit 52 is provided with current detector 53, described current detector 53 is connected with described microcontroller 51 by a current signal Circuit tuning 54.When air door 2 is opened to the optimum position of setting, position-limit mechanism makes motor 3 in stall state, now the operating current of motor 3 is because stall increases sharply, equally, when the air door 2 of range hood is closed to desired location, be that air door 2 flushes with kitchen ventilator panel, position-limit mechanism makes motor 3 in reverse stall state, now the operating current of motor 3 is because stall increases sharply, current detector 53 detection signals that arrange in the electric power loop of motor 3, by current signal Circuit tuning 54, by the situation of change of current signal, give microcontroller 51, the amplitude of variation size of microcontroller 51 by over-current state amplitude and current signal relative time judges whether air door 2 is opened and puts in place or close and put in place, thereby realize the safe and reliable opening and closing of air door 2.This structure does not need to arrange extra position sensor again, simplifies line design, increases functional reliability, and air door 2 has been realized the automatic stop defencive function that is hampered that opens the door and close the door simultaneously.Power module 4 provides 24V direct current for motor 3, for microcontroller 51 provides 5V working power.
Referring to Fig. 2, according to utility model the above embodiments, described motor commutation and control circuit 52 are connected and composed by switching tube Q3, switching tube Q4, switching tube Q5, switching tube Q6, the input of described motor commutation and control circuit 52 is connected with described power module 4, the control end of described motor commutation and control circuit 52 is connected with described microcontroller 51, and the output of described motor commutation and control circuit 52 is connected with described motor 3.Wherein switching tube Q3 is connected the control pin IO1 of microcontroller 51 and the rotating that IO2 is used for controlling motor 3 with switching tube Q6, while controlling pin IO2 output low level when controlling pin IO1 output high level, switching tube Q3 and switching tube Q4 close, switching tube Q5 and switching tube Q6 are open-minded, motor 3 reversions.
Referring to Fig. 2, according to utility model the above embodiments, the low-pass filter circuit of described current signal Circuit tuning 54 for being connected and composed by resistance R 20 and capacitor C 12.Described current detector is a current sampling resistor R19, described current sampling resistor R19 gives described current signal Circuit tuning by sampled signal, described current signal Circuit tuning becomes direct current signal by sampled signal and sends microcontroller to, microcontroller 51 is built-in with AD modular converter, AD modular converter is converted to digital quantity by the analog quantity of signal, then compare and see whether overcurrent of direct current generator 3 with the decision threshold of controlling, thereby cut off motor 3 operations; When the control pin IO1 of microcontroller 51 and control pin IO2 while output low level, motor 3 cuts out operation.
Referring to Fig. 3 and Fig. 4, according to utility model the above embodiments, also comprise the decelerator 6 being driven by described motor 3, between described decelerator 6 and described air door 2, by link gear 7, be connected.Decelerator 6 can effectively reduce the load of motor 3, extends the service life of motor 3, and link gear 7 makes the folding of air door 2 sensitiveer, smooth and easy.
Referring to Fig. 4 to Fig. 6, according to utility model the above embodiments, described position-limit mechanism comprises synchronizes rotary spacing dish 81 and is fixed on the positive stop 82 on described casing 1 with motor shaft, described position-arresting disk 81 is provided with opens screens 811 and closed screens 812, and described positive stop 82 coordinates with described unlatching screens 811 and closed screens 812.Described position-arresting disk 81 is provided with deep-slotted chip breaker 813, and described positive stop 82 is positioned at described deep-slotted chip breaker 813, and one end of described deep-slotted chip breaker 813 is for opening screens 811, and the other end of described deep-slotted chip breaker 813 is closed screens 812.This position-limit mechanism is simple in structure, parts are few, easy to assembly, production cost is low.
Referring to Fig. 4 and Fig. 5, according to utility model the above embodiments, in described casing 1, be provided with a fixed head 12 vertical with described air door 2, described motor 3 is arranged on described fixed head 12 1 sides with described decelerator 6, and the output shaft of described decelerator 6 is connected with described link gear 7 through described fixed head 12.Described position-arresting disk 81 is arranged on the output shaft of described decelerator 6, and described positive stop 82 is fixed on described fixed head 12.In casing 1, be provided for the fixed head 12 of mounted motor 3, make the fixing more firm of motor 3 and decelerator 6, facilitated the setting of positive stop 82 simultaneously.
Claims (9)
1. the range hood that an air door can automatic open-close, comprise casing, be arranged on blower fan system and controller in described casing, described casing front portion is provided with air inlet, described air inlet place is hinged with air door that can folding, in described casing, be also provided with the motor that drives described air door folding, control the control module of described machine operation, only stop the position-limit mechanism of described motor and be the power module of described motor and described control module power supply, it is characterized in that: described control module comprises microcontroller, be connected motor commutation and control circuit with described microcontroller, described motor is electrically connected to described motor commutation and control circuit, loop between described motor and described motor commutation and control circuit is provided with current detector, described current detector is connected with described microcontroller by a current signal Circuit tuning.
2. range hood according to claim 1, it is characterized in that: described motor commutation and control circuit are connected and composed by switching tube Q3, switching tube Q4, switching tube Q5, switching tube Q6, the input of described motor commutation and control circuit is connected with described power module, the control end of described motor commutation and control circuit is connected with described microcontroller, and the output of described motor commutation and control circuit is connected with described motor.
3. range hood according to claim 1, it is characterized in that: described current detector is a current sampling resistor R19, described current sampling resistor R19 gives described current signal Circuit tuning by sampled signal, and described current signal Circuit tuning becomes direct current signal by sampled signal and sends microcontroller to.
4. range hood according to claim 1, is characterized in that: the low-pass filter circuit of described current signal Circuit tuning for being connected and composed by resistance R 20 and capacitor C 12.
5. range hood according to claim 1, is characterized in that: also comprise by described motor-driven decelerator, between described decelerator and described air door, by link gear, be connected.
6. range hood according to claim 5, it is characterized in that: described position-limit mechanism comprises synchronizes rotary spacing dish and is fixed on the positive stop on described casing with motor shaft, described position-arresting disk is provided with opens screens and closed screens, described positive stop and described unlatching screens and closed clamping matching.
7. range hood according to claim 6, it is characterized in that: in described casing, be provided with a fixed head vertical with described air door, described motor and described decelerator are arranged on described fixed head one side, and the output shaft of described decelerator is connected with described link gear through described fixed head.
8. range hood according to claim 7, is characterized in that: described position-arresting disk is arranged on the output shaft of described decelerator, and described positive stop is fixed on described fixed head.
9. range hood according to claim 6, is characterized in that: described position-arresting disk is provided with deep-slotted chip breaker, and described positive stop is positioned at described deep-slotted chip breaker, and one end of described deep-slotted chip breaker is for opening screens, and the other end of described deep-slotted chip breaker is closed screens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595435.6U CN203478397U (en) | 2013-09-25 | 2013-09-25 | Range hood with automatic opening/closing air door |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320595435.6U CN203478397U (en) | 2013-09-25 | 2013-09-25 | Range hood with automatic opening/closing air door |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203478397U true CN203478397U (en) | 2014-03-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320595435.6U Expired - Fee Related CN203478397U (en) | 2013-09-25 | 2013-09-25 | Range hood with automatic opening/closing air door |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203478397U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115002A (en) * | 2015-08-06 | 2015-12-02 | 中山市百分百厨房电器有限公司 | Electronic type hand-nipping-preventing range hood |
| CN107357185A (en) * | 2017-08-30 | 2017-11-17 | 杭州为诺智能科技有限公司 | A kind of intelligent electric lift table control system and control method for realizing the protection that is hampered |
-
2013
- 2013-09-25 CN CN201320595435.6U patent/CN203478397U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105115002A (en) * | 2015-08-06 | 2015-12-02 | 中山市百分百厨房电器有限公司 | Electronic type hand-nipping-preventing range hood |
| CN107357185A (en) * | 2017-08-30 | 2017-11-17 | 杭州为诺智能科技有限公司 | A kind of intelligent electric lift table control system and control method for realizing the protection that is hampered |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20190925 |