CN107086821B - Starting control circuit of single-phase alternating current motor, compressor system and refrigeration equipment - Google Patents
Starting control circuit of single-phase alternating current motor, compressor system and refrigeration equipment Download PDFInfo
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- CN107086821B CN107086821B CN201710385049.7A CN201710385049A CN107086821B CN 107086821 B CN107086821 B CN 107086821B CN 201710385049 A CN201710385049 A CN 201710385049A CN 107086821 B CN107086821 B CN 107086821B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/42—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual single-phase induction motor
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Abstract
The invention discloses a starting control circuit of a single-phase alternating current motor, a compressor system and refrigeration equipment, wherein the starting control circuit of the single-phase alternating current motor comprises: the control circuit controls the trigger circuit to output a trigger signal to the controllable switch to trigger the controllable switch to be conducted when the single-phase alternating current motor is started, the motor starting circuit is conducted to start the single-phase alternating current motor, and after the single-phase alternating current motor is started, the control circuit stops outputting the trigger signal to enable the controllable switch to be turned off by controlling the trigger circuit, and the motor starting circuit is disconnected. Therefore, after the motor is started, the starting resistor is basically free from power consumption through the disconnection of the motor starting loop, so that energy waste caused by power consumption generated by the motor starting loop when the motor is in operation is avoided, the power consumption is reduced, the energy efficiency level is improved, and the motor starting circuit is energy-saving and environment-friendly.
Description
Technical Field
The invention relates to the technical field of motor control, in particular to a starting control circuit of a single-phase alternating current motor, a compressor system and refrigeration equipment.
Background
At present, most of constant speed compressors in refrigeration equipment are matched with common efficiency starters, when the constant speed compressors are operated, PTC (Positive Temperature Coefficient ) thermistors in the starters are always in an electrified state, the power consumption is generally 2-3W, the power consumption directly affects the power consumption and the energy efficiency level of the refrigeration equipment such as a refrigerator, and a great deal of energy waste is caused by accumulation in the daily period, so that the refrigeration equipment is not energy-saving and environment-friendly.
Therefore, there is a need to improve the power consumption problem of motor starters.
Disclosure of Invention
The present invention aims to solve at least to some extent one of the technical problems in the above-described technology. Therefore, an object of the present invention is to provide a starting control circuit for a single-phase ac motor, which can basically achieve no power consumption of the starter after the motor is started, and avoid energy waste.
A second object of the present invention is to propose a compressor system.
A third object of the present invention is to propose a refrigeration device.
To achieve the above object, an embodiment of the present invention provides a starting control circuit for a single-phase ac motor, wherein the single-phase ac motor includes a main winding and an auxiliary winding, a first end of the main winding is connected to a first end of an ac power supply after being connected to a first end of the auxiliary winding, an operating capacitor is connected between a second end of the main winding and a second end of the auxiliary winding, and a second end of the main winding is connected to a second end of the ac power supply, the starting control circuit includes: the motor starting loop comprises a PTC resistor and a controllable switch, one end of the PTC resistor is connected with the second end of the auxiliary winding, the first end of the controllable switch is connected with the other end of the PTC resistor, and the second end of the controllable switch is connected with the second end of the alternating current power supply; the first end of the trigger circuit is connected with the control end of the controllable switch, the second end of the trigger circuit is respectively connected with the second end of the controllable switch and the second end of the alternating current power supply, and the trigger circuit is used for controlling the controllable switch to be turned on or off; the control circuit is characterized in that a first end of the control circuit is respectively connected with the other end of the PTC resistor and the first end of the controllable switch, a second end of the control circuit is connected with a third end of the trigger circuit, the control circuit controls the trigger circuit to output a trigger signal to the controllable switch to trigger the controllable switch to be conducted when the single-phase alternating current motor is started, the motor starting circuit is conducted to start the single-phase alternating current motor, and after the single-phase alternating current motor is started, the control circuit stops outputting the trigger signal to enable the controllable switch to be turned off through controlling the trigger circuit, and the motor starting circuit is disconnected.
According to the starting control circuit of the single-phase alternating current motor, when the single-phase alternating current motor is started, the trigger circuit is controlled to output the trigger signal to the controllable switch to trigger the controllable switch to be conducted, so that the starting circuit of the motor is conducted, starting of the single-phase alternating current motor is achieved, after the single-phase alternating current motor is started, the control circuit stops outputting the trigger signal to enable the controllable switch to be turned off through controlling the trigger circuit, and therefore the starting circuit of the motor is disconnected, and therefore no power consumption of the PTC resistor is basically achieved after the motor is started, energy waste caused by power consumption generated by the starting circuit of the motor when the motor is operated is avoided, power consumption is reduced, energy efficiency level is improved, and energy conservation and environmental protection are achieved.
In addition, the starting control circuit of the single-phase alternating current motor according to the embodiment of the invention may further have the following additional technical features:
according to one embodiment of the invention, the controllable switch may be a triac.
According to one embodiment of the invention, the control circuit comprises: the first alternating-current end of the rectifier bridge is used as the first end of the control circuit, and the second alternating-current end of the rectifier bridge is used as the second end of the control circuit; one end of the first resistor is connected with the first direct current end of the rectifier bridge; one end of the second resistor is connected with the first direct-current end of the rectifier bridge; one end of the third resistor is connected with the other end of the first resistor, and the other end of the third resistor is connected with the second direct-current end of the rectifier bridge; one end of the first capacitor is connected with the other end of the first resistor and one end of the third resistor respectively; one end of the fourth resistor is connected with the other end of the first capacitor, and the other end of the fourth resistor is connected with the second direct-current end of the rectifier bridge; the base electrode of the first triode is respectively connected with the other end of the first capacitor and one end of the fourth resistor, and the emitter electrode of the first triode is connected with the second output end of the rectifier bridge; the anode of the first zener diode is connected with the collector electrode of the first triode, and the cathode of the first zener diode is connected with the other end of the second resistor.
According to one embodiment of the invention, the control circuit further comprises: the anode of the second zener diode is connected with the second direct current end of the rectifier bridge, and the cathode of the second zener diode is connected with the other end of the first resistor.
According to an embodiment of the present invention, the first transistor may be an NPN transistor.
According to one embodiment of the invention, the trigger circuit may comprise: a trigger diode, wherein a first end of the trigger diode is used as a first end of the trigger circuit, and a second end of the trigger diode is used as a third end of the trigger circuit; one end of the fifth resistor is connected with the first end of the trigger diode, and the other end of the fifth resistor is used as the second end of the trigger circuit; one end of the second capacitor is connected with the other end of the fifth resistor, and the other end of the second capacitor is connected with the second end of the trigger diode; and the sixth resistor is connected with the second capacitor in parallel.
According to an embodiment of the invention, the trigger diode may be a diac.
To achieve the above object, a second aspect of the present invention provides a compressor system including the start control circuit of the single-phase ac motor.
According to the compressor system provided by the embodiment of the invention, the starting control circuit is used for disconnecting the motor starting loop after the motor is started, so that no power consumption of the PTC resistor is basically realized through the disconnection of the motor starting loop after the motor is started, the energy waste caused by the power consumption generated by the motor starting loop when the motor is operated is avoided, the power consumption is reduced, the energy efficiency level is improved, and the compressor system is energy-saving and environment-friendly.
To achieve the above object, an embodiment of a third aspect of the present invention provides a refrigeration apparatus including the above compressor system.
According to the refrigerating equipment provided by the embodiment of the invention, the motor starting loop can be disconnected after the motor in the compressor system is started, so that no power consumption of the PTC resistor is basically realized through the disconnection of the motor starting loop after the motor is started, the energy waste caused by the power consumption generated by the motor starting loop when the motor is in operation is avoided, the power consumption is reduced, the energy efficiency level is improved, and the refrigerating equipment is energy-saving and environment-friendly.
Wherein the refrigeration device may be a refrigerator freezer.
Drawings
Fig. 1 is a block schematic diagram of a starting control circuit of a single-phase ac motor according to an embodiment of the present invention;
fig. 2 is a circuit schematic diagram of a start control circuit of a single-phase ac motor according to an embodiment of the present invention;
FIG. 3 is a block schematic diagram of a compressor system according to an embodiment of the present invention;
fig. 4 is a block schematic diagram of a refrigeration appliance according to an embodiment of the present invention.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
A starting control circuit of a single-phase ac motor, a compressor system, and a refrigerating apparatus according to embodiments of the present invention are described below with reference to the accompanying drawings.
Fig. 1 is a block schematic diagram of a starting control circuit of a single-phase alternating current motor according to an embodiment of the present invention. Fig. 2 is a circuit schematic diagram of a start control circuit of a single-phase ac motor according to an embodiment of the present invention.
As shown in fig. 1 and 2, the single-phase AC motor 11 includes a main winding L1 and an auxiliary winding L2, wherein a first end of the main winding L1 is connected to a first end of the auxiliary winding L2 and then connected to a first end of the AC power source AC, an operating capacitor RC is connected between a second end of the main winding L1 and a second end of the auxiliary winding L2, and a second end of the main winding L1 is connected to a second end of the AC power source AC.
Wherein, according to one embodiment of the present invention, as shown in fig. 2, there is a first node J1 between the first end of the main winding L1 and the first end of the auxiliary winding L2, the first node J1 being connected to the first end of the alternating current power source AC through the overload protector OLP.
As shown in fig. 1 and 2, a start control circuit 100 of a single-phase ac motor according to an embodiment of the present invention includes: a motor starting circuit 10, a trigger circuit 20 and a control circuit 30.
The motor starting loop 10 comprises a PTC resistor 101 and a controllable switch 102, wherein one end of the PTC resistor 101 is connected with the second end of the auxiliary winding L2, the first end of the controllable switch 102 is connected with the other end of the PTC resistor 101, and the second end of the controllable switch 102 is connected with the second end of the alternating current power supply AC; the first end of the trigger circuit 20 is connected with the control end of the controllable switch 102, the second end of the trigger circuit 20 is respectively connected with the second end of the controllable switch 102 and the second end of the alternating current power supply AC, and the trigger circuit 20 is used for controlling the controllable switch 102 to be turned on or off; the first end of the control circuit 30 is respectively connected with the other end of the PTC resistor 101 and the first end of the controllable switch 102, the second end of the control circuit 30 is connected with the third end of the trigger circuit 20, the control circuit 30 controls the trigger circuit 20 to output a trigger signal to the controllable switch 102 to trigger the controllable switch 102 to be conducted when the single-phase alternating current motor 11 is started, the motor starting circuit 10 is conducted to start the single-phase alternating current motor 11, the control circuit 30 stops outputting the trigger signal to enable the controllable switch 102 to be turned off after the single-phase alternating current motor 11 is started, the motor starting circuit 10 is disconnected, and thus the motor starting circuit 10 is disconnected after the single-phase alternating current motor is started, the PTC resistor has no power consumption basically, so that the power consumption during the operation of the motor can be reduced, the power consumption is reduced, and the energy waste is avoided.
According to one embodiment of the present invention, as shown in fig. 2, the controllable switch 102 may be a triac TR1, and the triac TR1 is turned on when the control electrode G receives the trigger signal output from the trigger circuit 20.
In the starting process of the single-phase ac motor 11, the auxiliary winding L2 (i.e., the start winding) is turned on to generate a phase difference between currents flowing through the main winding L1 and the auxiliary winding L2, thereby generating a rotating magnetic field to start the motor.
Specifically, the control circuit 30 controls the trigger circuit 20 to output a trigger signal to the controllable switch 102 when the single-phase AC motor 11 is started, so that the controllable switch 102 is turned on, and the AC power supply AC, the auxiliary winding L2, the PTC resistor 101, and the controllable switch 102 form a loop, thereby starting the single-phase AC motor 11. After the single-phase alternating current motor 11 is started, the control circuit 30 controls the trigger circuit 20 to stop outputting the trigger signal, so that the controllable switch 102 is turned off, and the motor starting loop 10 is turned off, so that the PTC resistor has no power consumption basically, the power consumption during the operation of the motor can be reduced, the power consumption is reduced, and the energy waste is avoided.
According to one embodiment of the present invention, as shown in fig. 2, the control circuit includes: the rectifier bridge DB1, a first resistor R1, a second resistor R2, a third resistor R3, a first capacitor C1, a fourth resistor R4, a first triode T1 and a first zener diode DZ1.
Wherein the first ac end of the rectifier bridge DB1 is used as the first end of the control circuit 30, and the second ac end of the rectifier bridge DB1 is used as the second end of the control circuit 30; one end of the first resistor R1 is connected with a first direct-current end of the rectifier bridge DB 1; one end of the second resistor R2 is connected with the first direct-current end of the rectifier bridge DB 1; one end of the third resistor R3 is connected with the other end of the first resistor R1, and the other end of the third resistor R3 is connected with the second direct current end of the rectifier bridge DB 1; one end of the first capacitor C1 is connected with the other end of the first resistor R1 and one end of the third resistor R3 respectively; one end of a fourth resistor R4 is connected with the other end of the first capacitor C1, and the other end of the fourth resistor R4 is connected with the second direct-current end of the rectifier bridge DB 1; the base electrode of the first triode T1 is respectively connected with the other end of the first capacitor C1 and one end of the fourth resistor R4, and the emitter electrode of the first triode T1 is connected with the second output end of the rectifier bridge DB 1; the anode of the first zener diode DZ1 is connected with the collector of the first triode T1, and the cathode of the first zener diode DZ1 is connected with the other end of the second resistor R2.
Specifically, when the single-phase ac motor 11 is started, the control circuit 30 rectifies the ac into unidirectional pulsating dc through the rectifier bridge DB1, charges the first capacitor C1 through the first resistor R1, and in one ac half-wave period, as the dc end voltage of the rectifier bridge DB1 gradually increases, the voltage across the first zener diode DZ1 also increases until the first zener diode DZ1 breaks down reversely, thereby triggering the first transistor T1 to be turned on, at this time, the equivalent resistance of the control circuit 30 decreases, and as the dc end voltage of the rectifier bridge DB1 continues to increase, the collecting current Ice of the first transistor T1 increases, so that the trigger circuit 20 can output a trigger signal to the controllable switch 102 to trigger the controllable switch 102 to be turned on, and further the motor starting circuit 10 is turned on, so as to start the single-phase ac motor 11. After the single-phase alternating current motor 11 finishes starting, when the first capacitor C1 is charged, the voltage at two ends of the first capacitor C1 is stable, so that the first triode T1 is cut off, at the moment, the equivalent resistance of the control circuit 30 is increased, the voltage division of the trigger circuit 20 is reduced, the trigger diode D1 cannot be triggered to be conducted, the trigger circuit 20 stops outputting a trigger signal, the controllable switch 102 is completely turned off, no maintenance current basically passes through the PTC resistor, and the purpose of no power consumption during motor operation is achieved.
The off time of the controllable switch 102 can be controlled by adjusting the charging time of the first capacitor C1, i.e. the time for reliably starting the single-phase ac motor 11 can be ensured.
In one embodiment of the present invention, as shown in fig. 2, the control circuit 30 further includes a second zener diode DZ2, wherein an anode of the second zener diode DZ2 is connected to the second dc terminal of the rectifier bridge DB1, and a cathode of the second zener diode DZ2 is connected to the other end of the first resistor R1. That is, the second zener diode DZ2 is provided in the control circuit 30 in antiparallel with the third resistor R3.
In one embodiment of the present invention, as shown in fig. 2, the first transistor may be an NPN transistor.
According to one embodiment of the present invention, as shown in fig. 2, the trigger circuit 20 includes: a trigger diode D1, a fifth resistor R5, a second capacitor C2 and a sixth resistor R6.
Wherein the first end of the trigger diode D1 is used as the first end of the trigger circuit 20, and the second end of the trigger diode D1 is used as the third end of the trigger circuit 20; one end of the fifth resistor R5 is connected with the first end of the trigger diode D1, and the other end of the fifth resistor R5 is used as the second end of the trigger circuit 20; one end of the second capacitor C2 is connected with the other end of the fifth resistor R5, and the other end of the second capacitor C2 is connected with the second end of the trigger diode D1; the sixth resistor R6 is connected in parallel with the second capacitor C2.
Specifically, as shown in fig. 2, the trigger diode D1 may be a diac.
In summary, according to the starting control circuit of the single-phase ac motor provided by the embodiment of the invention, when the single-phase ac motor is started, the trigger circuit is controlled to output the trigger signal to the controllable switch to trigger the controllable switch to be turned on, so that the motor starting circuit is turned on, starting of the single-phase ac motor is realized, and after the single-phase ac motor is started, the control circuit stops outputting the trigger signal to turn off the controllable switch through controlling the trigger circuit, so that the motor starting circuit is turned off, and thus, no power consumption of the PTC resistor is basically realized through the disconnection of the motor starting circuit after the motor is started, thereby avoiding energy waste caused by power consumption generated by the motor starting circuit when the motor is operated, reducing power consumption, improving energy efficiency level, saving energy and protecting environment.
As shown in fig. 3, an embodiment of the present invention also proposes a compressor system 200 including the start control circuit 100 of the single-phase ac motor described above.
According to the compressor system provided by the embodiment of the invention, the starting control circuit is used for disconnecting the motor starting loop after the motor is started, so that no power consumption of the PTC resistor is basically realized through the disconnection of the motor starting loop after the motor is started, the energy waste caused by the power consumption generated by the motor starting loop when the motor is operated is avoided, the power consumption is reduced, the energy efficiency level is improved, and the compressor system is energy-saving and environment-friendly.
As shown in fig. 4, an embodiment of the present invention also proposes a refrigeration apparatus 300 including the compressor system 200 described above.
According to the refrigerating equipment provided by the embodiment of the invention, the motor starting loop can be disconnected after the motor in the compressor system is started, so that no power consumption of the PTC resistor is basically realized through the disconnection of the motor starting loop after the motor is started, the energy waste caused by the power consumption generated by the motor starting loop when the motor is in operation is avoided, the power consumption is reduced, the energy efficiency level is improved, and the refrigerating equipment is energy-saving and environment-friendly.
In an embodiment of the present invention, the refrigeration device may be a refrigerator-freezer.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.
Claims (9)
1. A starting control circuit of a single-phase alternating current motor, the single-phase alternating current motor comprising a main winding and an auxiliary winding, wherein a first end of the main winding is connected with a first end of the auxiliary winding and then connected to a first end of an alternating current power supply, an operating capacitor is connected between a second end of the main winding and a second end of the auxiliary winding, and a second end of the main winding is connected to a second end of the alternating current power supply, the starting control circuit comprising:
the motor starting loop comprises a PTC resistor and a controllable switch, one end of the PTC resistor is connected with the second end of the auxiliary winding, the first end of the controllable switch is connected with the other end of the PTC resistor, and the second end of the controllable switch is connected with the second end of the alternating current power supply;
the first end of the trigger circuit is connected with the control end of the controllable switch, the second end of the trigger circuit is respectively connected with the second end of the controllable switch and the second end of the alternating current power supply, and the trigger circuit is used for controlling the controllable switch to be turned on or off;
the control circuit is connected with the other end of the PTC resistor and the first end of the controllable switch respectively, the second end of the control circuit is connected with the third end of the trigger circuit, the control circuit controls the trigger circuit to output a trigger signal to the controllable switch to trigger the controllable switch to be conducted when the single-phase alternating current motor is started, the motor starting loop is conducted to start the single-phase alternating current motor, and after the single-phase alternating current motor is started, the control circuit stops outputting the trigger signal to enable the controllable switch to be turned off by controlling the trigger circuit, and the motor starting loop is disconnected;
the control circuit includes:
the first alternating-current end of the rectifier bridge is used as the first end of the control circuit, and the second alternating-current end of the rectifier bridge is used as the second end of the control circuit;
one end of the first resistor is connected with the first direct current end of the rectifier bridge;
one end of the second resistor is connected with the first direct-current end of the rectifier bridge;
one end of the third resistor is connected with the other end of the first resistor, and the other end of the third resistor is connected with the second direct-current end of the rectifier bridge;
one end of the first capacitor is connected with the other end of the first resistor and one end of the third resistor respectively;
one end of the fourth resistor is connected with the other end of the first capacitor, and the other end of the fourth resistor is connected with the second direct-current end of the rectifier bridge;
the base electrode of the first triode is respectively connected with the other end of the first capacitor and one end of the fourth resistor, and the emitter electrode of the first triode is connected with the second output end of the rectifier bridge;
the anode of the first zener diode is connected with the collector electrode of the first triode, and the cathode of the first zener diode is connected with the other end of the second resistor.
2. The start control circuit for a single-phase ac motor of claim 1, wherein said controllable switch is a triac.
3. The start control circuit for a single-phase ac motor according to claim 1, characterized in that said control circuit further comprises:
the anode of the second zener diode is connected with the second direct current end of the rectifier bridge, and the cathode of the second zener diode is connected with the other end of the first resistor.
4. The starting control circuit of a single-phase ac motor of claim 1, wherein said first transistor is an NPN transistor.
5. The start control circuit of a single-phase alternating current motor according to claim 1, wherein the trigger circuit includes:
a trigger diode, wherein a first end of the trigger diode is used as a first end of the trigger circuit, and a second end of the trigger diode is used as a third end of the trigger circuit;
one end of the fifth resistor is connected with the first end of the trigger diode, and the other end of the fifth resistor is used as the second end of the trigger circuit;
one end of the second capacitor is connected with the other end of the fifth resistor, and the other end of the second capacitor is connected with the second end of the trigger diode;
and the sixth resistor is connected with the second capacitor in parallel.
6. The starting control circuit of a single-phase ac motor of claim 5, wherein said trigger diode is a diac.
7. A compressor system comprising a start control circuit of the single-phase alternating current motor according to any one of claims 1 to 6.
8. A refrigeration appliance comprising a compressor system according to claim 7.
9. The refrigeration appliance of claim 8 wherein the refrigeration appliance is a refrigerator freezer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710385049.7A CN107086821B (en) | 2017-05-26 | 2017-05-26 | Starting control circuit of single-phase alternating current motor, compressor system and refrigeration equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710385049.7A CN107086821B (en) | 2017-05-26 | 2017-05-26 | Starting control circuit of single-phase alternating current motor, compressor system and refrigeration equipment |
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| CN107086821B true CN107086821B (en) | 2023-07-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4761601A (en) * | 1982-03-04 | 1988-08-02 | Andrew Zaderej | Motor starting circuit |
| JP3272493B2 (en) * | 1992-12-05 | 2002-04-08 | 山田電機製造株式会社 | Starting device for single-phase induction motor |
| US5589753A (en) * | 1994-04-11 | 1996-12-31 | Andrew S. Kadah | Rate effect motor start circuit |
| BRPI0003448B1 (en) * | 2000-07-25 | 2016-06-07 | Brasil Compressores Sa | electronic circuit for single phase induction motor starting |
| CN100490298C (en) * | 2006-04-13 | 2009-05-20 | 何敦启 | No contact energy-saving starter |
| CN201039045Y (en) * | 2006-11-21 | 2008-03-19 | 万宝冷机集团广州电器有限公司 | Energy-saving PTC starter |
| CN101902183A (en) * | 2010-08-27 | 2010-12-01 | 贵州凯里经济开发区中昊电子有限公司 | Method and device for controlling motor start-up |
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