CN202978799U - Air-cooled refrigerator and speed-regulating control circuit of evaporator motor of air-cooled refrigerator - Google Patents
Air-cooled refrigerator and speed-regulating control circuit of evaporator motor of air-cooled refrigerator Download PDFInfo
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- CN202978799U CN202978799U CN2012207140574U CN201220714057U CN202978799U CN 202978799 U CN202978799 U CN 202978799U CN 2012207140574 U CN2012207140574 U CN 2012207140574U CN 201220714057 U CN201220714057 U CN 201220714057U CN 202978799 U CN202978799 U CN 202978799U
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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
- Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
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Abstract
The utility model discloses an air-cooled refrigerator and a speed-regulating control circuit of an evaporator motor of an air-cooled refrigerator. The speed-regulating control circuit comprises a controller; an evaporator motor revolution detecting circuit and an evaporator motor control circuit are arranged between an evaporator motor and the controller; the evaporator motor revolution detecting circuit is connected with a pulse signal output end of the evaporator motor and is used for receiving a pulse signal output by the evaporator motor and transmitting the pulse signal to the controller; the controller gains the revolving speed of the motor and is compared with the preset revolving speed of the motor and then outputs the driving voltage to the evaporator motor control circuit; and the evaporator motor control circuit outputs a control signal to a control end of the evaporator motor in order to control the revolving speed of the evaporator. By adopting the air-cooled refrigerator and speed-regulating control circuit, the condition of the variation of the revolving speed of the evaporator motor can be detected; the comparison is carried out between the revolving speed of the evaporator motor and the preset motor revolving speed, and then the revolving speed of the evaporator motor can be further controlled to reach the preset revolving speed of the motor, and as a result, the air circulating of the whole refrigerating system can reach a stable state, and the refrigerating performance of the refrigerator can be ensured.
Description
Technical field
The utility model belongs to the refrigerator technical field, particularly a kind of wind cooling refrigerator that can detect and regulate the speed-regulating control circuit of evaporation motor speed and adopt this circuit.
Background technology
The principle of wind cooling refrigerator is to utilize air to freeze, due in process of refrigerastion, and can condense on fan blade moisture, ice cube etc., the load that causes evaporating motor changes, thus the rotating speed of impact evaporation motor.Because the air circulation of refrigerator inside is to be directly proportional to the rotating speed of blower fan, thereby the variation of evaporation motor speed will inevitably affect the wind circulation of refrigerator inside, finally causes the refrigeration performance of refrigerator unstable.Simultaneously, because the wind cooling refrigerator operated by rotary motion has a plurality of motors and a plurality of electric appliance load, when wherein certain or certain several motors, electric appliance load work or when quitting work, the supply voltage that can cause supplying with the evaporation motor changes, and unsettled supply voltage also can cause evaporating the unstable of motor speed, affect the wind circulation of refrigerator inside, affect the refrigeration performance of refrigerator.
The utility model content
The purpose of this utility model is to provide a kind of wind cooling refrigerator evaporation circuit of motor speed regulation control based, has solved the evaporation motor speed unstable and affect refrigerator inside wind internal circulating load, causes the technical problem of refrigeration for refrigerator unstable properties.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of refrigerator evaporation circuit of motor speed regulation control based comprises controller, is provided with motor revolution detecting circuit and circuit for controlling motor between evaporation motor and controller.The motor revolution detecting circuit joins with evaporation motor pulses signal output part, receives the pulse signal of evaporation motor output and transfers to controller; Controller obtains motor speed and outputting drive voltage is to circuit for controlling motor relatively afterwards with default motor speed, and circuit for controlling motor outputs control signals to the control end of evaporation motor and controls the rotating speed that evaporates motor.
Further, the motor revolution detecting circuit is transistor switching circuit.
Further, transistor switching circuit comprises triode V3 and resistance, and the base stage of triode V3 is joined with evaporation motor pulses signal output part by current-limiting resistance R37; The collector electrode of triode V3 connects DC power supply by pull-up resistor R38, connects controller by current-limiting resistance R39; The grounded emitter of triode V3; DC power supply is connected between current-limiting resistance R37 and evaporation motor pulses signal output part by pull-up resistor R36.Wherein, triode V3 is NPN type triode.
Further, evaporation motor pulses signal output part is by filter capacitor C40 ground connection.
Preferably, circuit for controlling motor comprises triode, diode and resistance, the base stage of triode V2 is joined by current-limiting resistance R16 and controller, simultaneously by resistance R 19 ground connection, the collector electrode of triode V2 joins by the base stage of current-limiting resistance R20 and triode V9, the grounded emitter of triode V2; The base stage of triode V9 connects DC power supply by pull-up resistor R21, the emitter of triode V9 connects DC power supply, the collector electrode of triode V9 joins with the control end of evaporation motor, collector electrode connects the negative electrode of diode VD9 and the anode of diode VD10 simultaneously, the plus earth of diode VD9, the negative electrode of diode VD10 connects DC power supply.Wherein, triode V2 is that NPN type triode, triode V9 are the positive-negative-positive triode.
Further, the collector electrode of triode V9 joins with the control end of evaporation motor by coil L2, and the control end of evaporation motor both consists of filter circuit by filter capacitor C31 ground connection.
Preferably, the evaporation motor is brshless DC motor.
Design based on above-mentioned evaporation circuit of motor speed regulation control based, the utility model has also proposed a kind of wind cooling refrigerator, comprise casing, refrigerating system and evaporation motor, refrigerator comprises the evaporation circuit of motor speed regulation control based, the evaporation circuit of motor speed regulation control based comprises controller, is provided with motor revolution detecting circuit and circuit for controlling motor between evaporation motor and controller.The motor revolution detecting circuit joins with evaporation motor pulses signal output part, receives the pulse signal of evaporation motor output and transfers to controller; Controller obtains motor speed and outputting drive voltage is to circuit for controlling motor relatively afterwards with default motor speed, and circuit for controlling motor outputs control signals to the control end of evaporation motor and controls the rotating speed that evaporates motor.
Compared with prior art, advantage of the present utility model and good effect are: the utility model controller can detect that load due to fan blade changes, power supply voltage changes and causes evaporating the situation that motor speed changes, and after evaporating the rotating speed of motor and default motor speed and comparing, the output control signal, control the stabilization of speed of evaporation motor at default motor speed, thereby the wind internal circulating load that makes whole refrigerating system reaches a stable state, guarantees the refrigeration performance of refrigerator.
After reading by reference to the accompanying drawings the detailed description of the utility model execution mode, other characteristics of the present utility model and advantage will become clearer.
Description of drawings
Fig. 1 is the theory diagram of the novel specific embodiment of this use.
Fig. 2 is the circuit theory diagrams of the utility model specific embodiment.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.
For existing wind cooling refrigerator due to reasons such as fan blade load variations, evaporation motor supply power voltage shakinesses, the load that causes evaporating motor changes, the rotating speed of impact evaporation motor, thereby affect the problem of refrigeration for refrigerator performance, propose a kind of evaporation motor speed that detects, and controlled the circuit of motor speed regulation control based of evaporating motor speed with the relatively rear outputting drive voltage of default motor speed.
Concrete, as shown in Figure 1: the evaporation motor is brshless DC motor, is used for the drive fan fan blade and rotates, fan carries out the circulating cold air in refrigerator.Refrigerator evaporation circuit of motor speed regulation control based, comprise the controller that detects and control the evaporation motor speed, be provided with the motor revolution detecting circuit between evaporation motor and controller, the motor revolution detecting circuit joins with evaporation motor pulses signal output part, and the pulse signal that receives the output of evaporation motor transfers to controller after treatment.Controller will evaporate the current rotating speed of motor and predefined rotating ratio after, provide driving voltage by circuit for controlling motor for the evaporation motor, control the rotating speed of evaporation motor.
As shown in Figure 2, the execution mode of the present embodiment is specifically described:
The motor revolution detecting circuit is a transistor switching circuit.Transistor switching circuit comprises a NPN type triode V3.The base stage of triode V3 is joined with evaporation motor pulses signal output part by current-limiting resistance R37, and evaporation motor pulses signal output part output pulse signal is to the base stage of triode V3; The collector electrode of triode V3 connects DC power supply+5V by pull-up resistor R38, simultaneously, connects controller by current-limiting resistance R39; The grounded emitter of triode V3; DC power supply+5V is connected between current-limiting resistance R37 and evaporation motor pulses signal output part by pull-up resistor R36.
evaporation motor pulses signal output part output pulse signal, after filter capacitor C40 ground connection filtering interfering, transfer to triode V3 by current-limiting resistance R37, triode V3 transfers to controller after the pulse signal of evaporation motor output is processed, controller carries out step-by-step counting, and with step-by-step counting be converted to the evaporation motor rotating speed, with the evaporation current rotating speed of motor and predefined rotating ratio, if current rotating speed is identical with predefined rotating speed, controller is not adjusted the evaporation motor speed, if there are deviation in current rotating speed and predefined rotating speed, controller calculates and outputting drive voltage by PID, be that the evaporation motor is regulated operating voltage by the evaporation circuit for controlling motor, control the stabilization of speed of evaporation motor at predefined rotating speed.
The evaporation circuit for controlling motor comprises NPN type triode V2, positive-negative-positive triode V9, diode VD9, diode VD10 and resistance and filter circuit.
The base stage of triode V2 is joined by current-limiting resistance R16 and controller, the controller outputting drive voltage after current-limiting resistance R16 current limliting to the base stage of triode V2.Simultaneously, the base stage of triode V2 is by resistance R 19 ground connection.The collector electrode of triode V2 joins by the base stage of current-limiting resistance R20 and triode V9, the grounded emitter of triode V2.
The base stage of triode V9 connects DC power supply+13.2V by pull-up resistor R21, the emitter of triode V9 connects DC power supply+13.2V, the collector electrode of triode V9 joins with the control end of evaporation motor by coil L2, the control end of evaporation motor consists of filter circuit by filter capacitor C31 ground connection by coil L2 and filter capacitor C31.Simultaneously, collector electrode connects the negative electrode of diode VD9 and the anode of diode VD10, the plus earth of diode VD9, and the negative electrode of diode VD10 connects DC power supply, and wherein diode VD9 is used for absorbing surge.
Controller produces driving voltage, by triode V2, triode V9 is carried out switch and controls, the evaporator motor is provided go code, open command, control thereby the evaporation motor is carried out switch.
This specific embodiment has also proposed a kind of wind cooling refrigerator on the basis of evaporation circuit of motor speed regulation control based, wind cooling refrigerator comprises casing, be positioned at the refrigerating system, evaporation motor of casing and by the fan blade of evaporation driven by motor, fan blade rotate to form the circulated air of refrigerator inside.Wherein, the rotating speed of evaporation motor is detected by circuit of motor speed regulation control based by controller, and compare with predefined tachometer value, if there is controller outputting drive voltage of deviation relatively, rotating speed to the evaporation motor is controlled, until its tachometer value reaches predefined tachometer value.Like this, the evaporation motor is under the control of speed-regulating control circuit, when the situation such as moisture ice cube or evaporation motor power supply voltage instability occurring condensing on fan blade when wind cooling refrigerator, the rotating speed of evaporation motor all can maintain the preset rotation speed value, thereby has guaranteed the refrigeration performance of refrigerator.
It should be noted that at last: above embodiment only in order to the technical solution of the utility model to be described, is not intended to limit; Although with reference to previous embodiment, the utility model is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of each embodiment technical scheme of the utility model.
Claims (8)
1. a refrigerator evaporates circuit of motor speed regulation control based, comprise controller, it is characterized in that: be provided with motor revolution detecting circuit and circuit for controlling motor between described evaporation motor and controller, described motor revolution detecting circuit joins with evaporation motor pulses signal output part, receives the pulse signal of evaporation motor output and transfers to controller; Described controller obtains motor speed and outputting drive voltage is to circuit for controlling motor relatively afterwards with default motor speed, and circuit for controlling motor outputs control signals to the control end of evaporation motor and controls the rotating speed that evaporates motor.
2. refrigerator according to claim 1 evaporates circuit of motor speed regulation control based, and it is characterized in that: described motor revolution detecting circuit is transistor switching circuit.
3. refrigerator according to claim 2 evaporates circuit of motor speed regulation control based, it is characterized in that: described transistor switching circuit comprises triode V3 and resistance, and the base stage of described triode V3 is joined with evaporation motor pulses signal output part by current-limiting resistance R37; The collector electrode of described triode V3 connects DC power supply by pull-up resistor R38, connects controller by current-limiting resistance R39; The grounded emitter of described triode V3; Described DC power supply is connected between current-limiting resistance R37 and evaporation motor pulses signal output part by pull-up resistor R36, and described triode V3 is NPN type triode.
4. refrigerator according to claim 3 evaporates circuit of motor speed regulation control based, it is characterized in that: described evaporation motor pulses signal output part is by filter capacitor C40 ground connection.
5. refrigerator according to claim 1 evaporates circuit of motor speed regulation control based, it is characterized in that: described circuit for controlling motor comprises triode, diode and resistance, the base stage of described triode V2 is joined by current-limiting resistance R16 and controller, simultaneously by resistance R 19 ground connection, the collector electrode of triode V2 joins by the base stage of current-limiting resistance R20 and triode V9, the grounded emitter of triode V2; The base stage of described triode V9 connects DC power supply by pull-up resistor R21, the emitter of triode V9 connects DC power supply, the collector electrode of triode V9 joins with the control end of evaporation motor, collector electrode connects the negative electrode of diode VD9 and the anode of diode VD10 simultaneously, the plus earth of described diode VD9, the negative electrode of diode VD10 connects DC power supply; Described triode V2 is that NPN type triode, triode V9 are the positive-negative-positive triode.
6. refrigerator according to claim 5 evaporates circuit of motor speed regulation control based, it is characterized in that: the collector electrode of described triode V9 joins with the control end of evaporation motor by coil L2, and the control end of described evaporation motor is by filter capacitor C31 ground connection.
7. according to claim 1-6 described refrigerators of any one evaporate circuit of motor speed regulation control based, and it is characterized in that: described evaporation motor is brshless DC motor.
8. a wind cooling refrigerator, comprise casing, refrigerating system and evaporation motor, and it is characterized in that: described refrigerator comprises the described evaporation circuit of motor speed regulation control based of claim 1-7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207140574U CN202978799U (en) | 2012-12-21 | 2012-12-21 | Air-cooled refrigerator and speed-regulating control circuit of evaporator motor of air-cooled refrigerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012207140574U CN202978799U (en) | 2012-12-21 | 2012-12-21 | Air-cooled refrigerator and speed-regulating control circuit of evaporator motor of air-cooled refrigerator |
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| Publication Number | Publication Date |
|---|---|
| CN202978799U true CN202978799U (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012207140574U Expired - Fee Related CN202978799U (en) | 2012-12-21 | 2012-12-21 | Air-cooled refrigerator and speed-regulating control circuit of evaporator motor of air-cooled refrigerator |
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| CN (1) | CN202978799U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108431531A (en) * | 2015-12-16 | 2018-08-21 | 三星电子株式会社 | Refrigerator, the operating method of refrigerator and computer readable recording medium storing program for performing |
-
2012
- 2012-12-21 CN CN2012207140574U patent/CN202978799U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108431531A (en) * | 2015-12-16 | 2018-08-21 | 三星电子株式会社 | Refrigerator, the operating method of refrigerator and computer readable recording medium storing program for performing |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: HISENSE (SHANDONG) REFRIGERATOR CO., LTD. Free format text: FORMER OWNER: HISENSE (BEIJING) ELECTRICAL EQUIPMENT CO., LTD. Effective date: 20140102 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20140102 Address after: 266101 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee after: Hisense (Shandong) refrigerator Co., Ltd. Address before: 266101 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee before: Hisense (Beijing) Electric Co., Ltd. |
|
| CP02 | Change in the address of a patent holder |
Address after: 266000 Qingdao, Pingdu City, South Village, Hisense Road, No. 8, No. Patentee after: Hisense (Shandong) refrigerator Co., Ltd. Address before: 266101 Zhuzhou Road, Laoshan District, Shandong, No. 151, No. Patentee before: Hisense (Shandong) refrigerator Co., Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20181221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |