CN220539827U - Compressor circuit, compressor and air conditioner - Google Patents
Compressor circuit, compressor and air conditioner Download PDFInfo
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- CN220539827U CN220539827U CN202322080478.7U CN202322080478U CN220539827U CN 220539827 U CN220539827 U CN 220539827U CN 202322080478 U CN202322080478 U CN 202322080478U CN 220539827 U CN220539827 U CN 220539827U
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Abstract
The application provides a compressor circuit, a compressor and an air conditioner. The circuit is applied to a compressor. The compressor includes a built-in inverter. The compressor circuit includes: the power supply comprises a power input end, a voltage dividing switch, a voltage reducing filter and a voltage dividing controllable device. The power input end is used for being electrically connected with an alternating current power supply. The voltage dividing switch is electrically connected between the power input end and the built-in frequency converter and comprises a voltage dividing switch controlled end. The step-down filter is connected in parallel with the voltage dividing switch. The voltage division controllable device comprises a voltage division detection end and a voltage division control end. The voltage division detection end is electrically connected with the power input end and is used for detecting the alternating voltage of the power input end. The voltage division control end is electrically connected with the voltage division switch controlled end and is used for controlling the voltage division switch to be disconnected when the alternating voltage of the power input end is higher than the voltage division alternating voltage threshold value. According to the method and the device, when the alternating voltage of the built-in frequency converter of the compressor is higher than the voltage threshold, the voltage of the built-in frequency converter is reduced, the built-in frequency converter is prevented from being burnt out due to high voltage, and the compressor is protected.
Description
Technical Field
The application relates to the technical field of compressors, in particular to a compressor circuit, a compressor and an air conditioner.
Background
Currently, some air conditioner compressors are configured with a built-in inverter. The built-in frequency converter has smaller power and contains an electrolytic capacitor. When the voltage loaded by the built-in frequency converter is increased, the electrolytic capacitor is broken down due to input overvoltage more easily, and then other devices of the built-in frequency converter are broken down, so that potential safety hazards are brought.
Disclosure of Invention
The application provides a high-safety compressor circuit, a compressor and an air conditioner.
The application provides a compressor circuit, is applied to the compressor, the compressor includes built-in converter, the compressor circuit includes:
the power supply input end is used for being electrically connected with an alternating current power supply;
the voltage dividing switch is electrically connected between the power input end and the built-in frequency converter and comprises a voltage dividing switch controlled end;
the step-down filter is connected with the voltage dividing switch in parallel;
the voltage division controllable device comprises a voltage division detection end and a voltage division control end, wherein the voltage division detection end is electrically connected with the power input end and used for detecting alternating voltage of the power input end, and the voltage division control end is electrically connected with the voltage division switch controlled end and used for controlling the voltage division switch to be disconnected when the alternating voltage of the power input end is higher than a voltage division alternating voltage threshold value.
Optionally, the voltage dividing switch comprises a first voltage dividing switch and a second voltage dividing switch which are connected in series, and the second voltage dividing switch is far away from the built-in frequency converter relative to the first voltage dividing switch;
the step-down filter comprises a first step-down filter and a second step-down filter, the first step-down filter is connected with the first voltage dividing switch in parallel, and the second step-down filter is connected with the second voltage dividing switch in parallel;
the voltage division controllable device comprises a first voltage division controllable device and a second voltage division controllable device, and the first voltage division controllable device is used for controlling the first voltage division switch to be disconnected when the alternating voltage at the input end of the power supply is higher than a first voltage division alternating voltage threshold value; the second voltage division controllable device is used for controlling the second voltage division switch to be disconnected when the alternating voltage at the input end of the power supply is higher than a second voltage division alternating voltage threshold value after the first voltage division switch is disconnected; the second divided ac voltage threshold is greater than the first divided ac voltage threshold.
Optionally, the compressor circuit includes a controller, which is communicatively connected to the internal frequency converter, and is configured to receive a dc side voltage of the internal frequency converter; the voltage division controllable device comprises a voltage division controllable device controlled end which is electrically connected with the controller; and the controller is used for controlling the voltage division controllable device to act when the direct-current side voltage of the built-in frequency converter is higher than the voltage division direct-current voltage threshold value so as to control the voltage division switch to be disconnected.
Optionally, the compressor circuit includes:
the power-off switch is electrically connected between the power input end and the voltage dividing switch and comprises a power-off switch controlled end;
the power-off controllable device comprises a power-off detection end and a power-off control end, wherein the power-off detection end is electrically connected with the power input end and used for detecting alternating voltage of the power input end, and the power-off control end is electrically connected with the power-off switch controlled end and used for controlling the power-off switch to be turned off when the alternating voltage of the power input end is higher than a power-off alternating voltage threshold value after the voltage dividing switch is turned off; the power-off ac voltage threshold is greater than the divided ac voltage threshold.
Optionally, the compressor circuit includes a controller, which is communicatively connected to the internal frequency converter, and is configured to receive a dc side voltage of the internal frequency converter; the power-off controllable device comprises a power-off controllable device controlled end which is electrically connected with the controller; the controller is used for controlling the power-off controllable device to act when the voltage of the direct-current side of the built-in frequency converter is higher than a power-off direct-current voltage threshold value so as to control the power-off switch to be disconnected; the power-off dc voltage threshold is greater than the divided dc voltage threshold.
Optionally, the controller includes an expansion interface, and the controller is electrically connected with the controlled end of the voltage division controllable device through the expansion interface.
Optionally, the voltage dividing switch comprises a contactor.
Optionally, the voltage division controllable device includes a relay.
Optionally, the compressor circuit includes an input reactor electrically connected between the power supply input terminal and the voltage dividing switch.
The application provides a compressor, including built-in converter and with built-in converter electricity is connected the compressor circuit of any one of the preceding claims.
The present application also provides an air conditioner comprising at least one compressor as described above.
In some embodiments, the compressor circuit includes a voltage dividing switch and a voltage dividing controllable device, the voltage dividing switch is electrically connected with the ac power supply and the built-in frequency converter, a voltage dividing detection end of the voltage dividing controllable device is connected with the ac power supply, the ac voltage is detected, a voltage dividing control end of the voltage dividing controllable device is electrically connected with a voltage dividing switch controlled end of the voltage dividing switch, when the ac voltage is higher than a voltage threshold value, the voltage dividing switch is controlled to be disconnected, and then the built-in frequency converter is connected with a voltage reducing filter in series, the voltage reducing filter can reduce the voltage at two ends of the built-in frequency converter, so that the voltage of the built-in frequency converter can be reduced when the ac voltage loaded by the built-in frequency converter of the compressor is higher than the voltage threshold value, and the built-in frequency converter is prevented from being burnt out due to high voltage, and the compressor is protected.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
Fig. 1 is a block diagram illustrating a structure of an embodiment of a compressor of the present application.
Fig. 2 is a block diagram illustrating a structure of another embodiment of the compressor of the present application.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples are not representative of all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present application as detailed in the accompanying claims.
The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this application belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "plurality" means two or more. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The terminology used in the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the present application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
The circuit is applied to a compressor. The compressor includes a built-in inverter. The compressor circuit includes: the power supply comprises a power input end, a voltage dividing switch, a voltage reducing filter and a voltage dividing controllable device. The power input end is used for being electrically connected with an alternating current power supply. The voltage dividing switch is electrically connected between the power input end and the built-in frequency converter and comprises a voltage dividing switch controlled end. The step-down filter is connected in parallel with the voltage dividing switch. The voltage division controllable device comprises a voltage division detection end and a voltage division control end. The voltage division detection end is electrically connected with the power input end and is used for detecting the alternating voltage of the power input end. The voltage division control end is electrically connected with the voltage division switch controlled end and is used for controlling the voltage division switch to be disconnected when the alternating voltage of the power input end is higher than the voltage division alternating voltage threshold value. According to the method and the device, when the alternating voltage of the built-in frequency converter of the compressor is higher than the voltage threshold, the voltage of the built-in frequency converter is reduced, the built-in frequency converter is prevented from being burnt out due to high voltage, and the compressor is protected.
The application provides a compressor circuit, a compressor and an air conditioner. The compressor circuit, the compressor and the air conditioner of the present application will be described in detail with reference to the accompanying drawings. The features of the examples and embodiments described below may be combined with each other without conflict.
Fig. 1 is a block diagram illustrating a structure of an embodiment of a compressor of the present application. The compressor may be applied to a refrigeration system. As shown in fig. 1, the compressor includes a built-in inverter 10 and a compressor circuit 20 electrically connected to the built-in inverter 10. In some embodiments, the compressor includes a plurality of built-in frequency converters 10 and a compressor circuit 20 electrically connected to the plurality of built-in frequency converters, respectively. In some embodiments, the compressor further comprises an external frequency converter. The built-in frequency converter 10 comprises electrolytic capacitors, rectifier bridges, transistors and the like.
The compressor circuit 20 includes: a power supply input terminal 21, a voltage dividing switch 25, a voltage reducing filter 26 and a voltage dividing controllable device 27.
The power input terminal 21 is electrically connected to an ac power source, and provides ac power to the voltage dividing switch 25, the voltage dividing controllable device 27, and the built-in inverter 10. The alternating current power supply comprises mains supply.
The voltage dividing switch 25 is electrically connected between the power supply input terminal 21 and the built-in inverter 10. The voltage divider switch 25 includes a voltage divider switch controlled end 251. The voltage dividing switch 25 can be controlled to be turned on or off by other components through a voltage dividing switch controlled end 251. In some embodiments, the voltage divider switch 25 comprises a contactor.
The step-down filter 26 is connected in parallel with the voltage dividing switch 25. The step-down filter 26 and the voltage dividing switch 25 are electrically connected between the power supply input terminal 21 and the built-in inverter 10. The step-down filter 26 may step down the ac voltage at the power input terminal 21, thereby reducing the voltage applied to the internal frequency converter 10. When the power-off switch 22 is closed, the voltage-dividing switch 25 is opened, the power input terminal 21 supplies the built-in inverter 10 with alternating current through the step-down filter 26, and the alternating current is lower than the voltage output from the power input terminal 21. When both the voltage dividing switch 25 and the power off switch 22 are closed, the step-down filter 26 is short-circuited, and the power input terminal 21 directly supplies the built-in inverter 10 with alternating current.
The voltage division controllable device 27 includes a voltage division detecting terminal 271 and a voltage division controlling terminal 272. The voltage division detecting terminal 271 is electrically connected to the power input terminal 21, and is configured to detect an ac voltage of the power input terminal 21. The voltage division control terminal 272 is electrically connected to the voltage division switch controlled terminal 251, and is configured to control the voltage division switch 25 to be turned off when the ac voltage at the power input terminal 21 is higher than the voltage division ac voltage threshold. When the voltage applied to the internal frequency converter 10 reaches the divided ac voltage threshold, the voltage that can be carried by the internal frequency converter 10 may be exceeded, and at this time, the connection between the internal frequency converter 10 and the power input terminal 21 does not need to be disconnected, but the voltage applied to the internal frequency converter 10 needs to be reduced. The voltage division control terminal 272 is electrically connected to the voltage division switch controlled terminal 251, and is used for controlling the on/off of the voltage division switch 25. When the ac voltage at the power input end 21 is higher than the divided ac voltage threshold, it means that the voltage applied to the internal frequency converter 10 reaches the divided ac voltage threshold, the voltage dividing controllable device 27 controls the voltage dividing switch 25 to be turned off through the voltage dividing control end 272, and the voltage output by the power input end 21 is reduced by the voltage reducing filter 26 and then supplied to the internal frequency converter 10, so that the voltage applied to the internal frequency converter 10 is reduced, the voltage applied to the internal frequency converter 10 is lower than the divided ac voltage threshold, the internal frequency converter 10 is protected, the compressor circuit 20 is protected, and the reliability of the compressor circuit 20 is improved. In some embodiments, the voltage division control terminal 272 is configured to control the voltage division switch 25 to be closed when the ac voltage at the power input terminal 21 is lower than the voltage division ac voltage threshold. So that the compressor circuit 20 can operate normally. In some embodiments, the voltage division controllable device 27 comprises a relay.
The voltage division controllable device 27 includes a voltage division controllable device controlled end 273 electrically connected to the controller 24. The controller 24 is used for controlling the voltage division controllable device 27 to act to control the voltage division switch 25 to be turned off when the direct-current side voltage of the built-in frequency converter 10 is higher than the divided direct-current voltage threshold. When the voltage applied to the internal frequency converter 10 reaches the divided dc voltage threshold, it needs to be stepped down. When the dc side voltage of the built-in frequency converter 10 received by the controller 24 exceeds the divided dc voltage threshold, the controller 24 controls the voltage division controllable device 27 to operate, thereby controlling the voltage division switch 25 to be turned off, so that the voltage reduction filter 26 reduces the voltage loaded on the built-in frequency converter 10, preventing the built-in frequency converter 10 from being subjected to overvoltage, protecting the compressor circuit 20, and improving the reliability of the compressor circuit 20. In some embodiments, the controller 24 is configured to control the voltage division controllable device 27 to act to control the voltage division switch 25 to be closed when the dc side voltage of the internal frequency converter 10 is lower than the divided dc voltage threshold. So that the compressor circuit 20 can operate normally.
With continued reference to fig. 1, the compressor circuit 20 includes further includes: a power-off switch 22 and a power-off controllable device 23.
The power-off switch 22 is electrically connected between the power input terminal 21 and the voltage dividing switch 25. When the power-off switch 22 is closed, the power input end 21 supplies alternating current to the built-in frequency converter 10, and when the power-off switch 22 is opened, the power input end 21 is disconnected from the built-in frequency converter 10. The power-off switch 22 includes a power-off switch controlled terminal 221. The power-off switch 22 can be controlled to be turned on and off by other components through a power-off switch controlled end 221. In some embodiments, the power-off switch 22 includes a contactor. The contactor can cut off the circuit rapidly, is suitable for frequent operation, and can be controlled remotely.
The power down controllable device 23 includes a power down detection terminal 231 and a power down control terminal 232. The power-off detection terminal 231 is electrically connected to the power input terminal 21, and is used for detecting an ac voltage of the power input terminal 21. The power-off control terminal 232 is electrically connected to the power-off switch controlled terminal 221, and is configured to control the power-off switch 22 to be turned off when the ac voltage of the power input terminal 21 is higher than the power-off ac voltage threshold after the voltage dividing switch 25 is turned off. When the voltage to which the built-in inverter 10 is applied reaches the power-off ac voltage threshold, it may be damaged by an overvoltage. The power-off control terminal 232 is electrically connected to the power-off switch controlled terminal 221, and is used for controlling the power-off switch 22 to be turned on or off. When the ac voltage at the power input terminal 21 is higher than the ac voltage threshold, it indicates that the voltage applied to the internal frequency converter 10 reaches the ac voltage threshold, and there is a risk of damage, and the power-off controllable device 23 controls the power-off switch 22 to be turned off through the power-off control terminal 232, so as to prevent the internal frequency converter 10 from being over-voltage, protect the compressor circuit 20, and improve the reliability of the compressor circuit 20.
The power-off ac voltage threshold is greater than the divided ac voltage threshold. In this way, when the circuit is disconnected by the power-off switch 22, the voltage-dividing switch 25 is already operated, and the circuit is cut off under the condition that the built-in frequency converter 10 cannot be protected by voltage reduction, so that the normal operation of the compressor circuit 20 is ensured as much as possible.
In some embodiments, the power-off control terminal 232 is configured to control the power-off switch 22 to be closed when the ac voltage at the power input terminal 21 is lower than the power-off ac voltage threshold. So that the compressor circuit 20 can operate normally. In some embodiments, the power down controllable device 23 comprises a relay. The relay may cause the controlled quantity to generate a predetermined step change in accordance with the input quantity.
In some embodiments, the compressor circuit 20 includes a power-off switch 22 and a power-off controllable device 23, the power-off switch 22 is electrically connected to the ac power source and the built-in inverter 10, a power-off detection end 231 of the power-off controllable device 23 is connected to the ac power source, and detects the ac voltage, a power-off control end 232 of the power-off controllable device 23 is electrically connected to a power-off switch controlled end 221 of the power-off switch 22, when the ac voltage is higher than a voltage threshold value, the power-off switch 22 is controlled to be turned off, so that the built-in inverter 10 is disconnected from the ac power source when the ac voltage applied to the built-in inverter 10 of the compressor is higher than the voltage threshold value, thereby preventing the built-in inverter 10 from being burned out due to the high voltage and protecting the compressor.
The compressor circuit 20 includes a controller 24 communicatively coupled to the internal inverter 10 for receiving the dc side voltage of the internal inverter 10. The power-off controllable device 23 comprises a power-off controllable device controlled end 233, and is electrically connected with the controller 24, and the controller 24 controls the on-off of the power-off controllable device 23 through the power-off controllable device controlled end 233, so as to control the on-off of the power-off switch 22. The controller 24 is used for controlling the power-off controllable device 23 to act to control the power-off switch 22 to be turned off when the voltage on the direct current side of the built-in frequency converter 10 is higher than the power-off direct current voltage threshold. When the voltage to which the internal frequency converter 10 is applied reaches the power-off dc voltage threshold, it may be damaged by an overvoltage. When the dc side voltage of the built-in frequency converter 10 received by the controller 24 exceeds the power-off dc voltage threshold, the controller 24 controls the power-off controllable device 23 to act, thereby controlling the power-off switch 22 to be turned off, so that the built-in frequency converter 10 is disconnected from the dc power supply, the built-in frequency converter 10 is prevented from being damaged due to overvoltage, the compressor circuit 20 is protected, and the reliability of the compressor circuit 20 is improved. In some embodiments, the controller 24 is configured to control the power-off controllable device 23 to operate to control the power-off switch 22 to be closed when the dc side voltage of the internal frequency converter 10 is lower than the power-off dc voltage threshold. So that the compressor circuit 20 can operate normally.
The controller 24 includes an expansion interface, and the controller 24 is electrically connected to the controlled end 233 of the power-off controllable device through the expansion interface. The expansion interface may provide more wiring terminals so that the controller 24 may be multiplexed. The controller 24 is electrically connected with the controlled end 233 of the power-off controllable device through an expansion interface, so that the original wiring of the controller 24 is not required to be changed, the operation is simple, and the cost is reduced.
In the embodiment shown in fig. 1, the controller 24 is also electrically connected to the controlled end 273 of the voltage dividing controllable device through an expansion interface.
The compressor circuit 20 includes an input reactor 28 electrically connected between the power supply input 21 and the voltage divider switch 25. The input reactor 28 can limit current surge caused by sudden change of power grid voltage and operation overvoltage, effectively protect the built-in frequency converter 10, improve the power factor of the built-in frequency converter 10, inhibit harmonic current of the power grid input by the built-in frequency converter 10 and improve the reliability of the compressor circuit 20.
Fig. 2 is a block diagram illustrating a structure of another embodiment of the compressor of the present application.
The voltage dividing switch 25 includes a first voltage dividing switch 31 and a second voltage dividing switch 32 connected in series. The second voltage dividing switch 32 is remote from the built-in frequency converter 10 with respect to the first voltage dividing switch 31.
The step-down filter 26 includes a first step-down filter 261 and a second step-down filter 262, the first step-down filter 261 being connected in parallel with the first voltage dividing switch 31, the second step-down filter 262 being connected in parallel with the second voltage dividing switch 32.
The voltage division controllable device 27 includes a first voltage division controllable device 127 and a second voltage division controllable device 227. The first voltage division controllable device 127 is configured to control the first voltage division switch 31 to be turned off when the ac voltage at the power input terminal 21 is higher than the first voltage division ac voltage threshold. The voltage output from the power input terminal 21 is reduced by the step-down filter 261 and then is applied to the internal frequency converter 10, so that the voltage of the internal frequency converter 10 can be reduced and damage can be prevented.
The second voltage division controllable device 227 is configured to control the second voltage division switch 32 to be turned off when the ac voltage at the power input terminal 21 is higher than the second voltage division ac voltage threshold value after the first voltage division switch 31 is turned off. The second divided ac voltage threshold is greater than the first divided ac voltage threshold. After the first voltage dividing switch 31 is turned off, if the voltage applied to the built-in frequency converter 10 continues to rise, the second voltage dividing switch 32 is turned off, and the voltage of both ends of the built-in frequency converter 10 is further reduced by the voltage reducing filter 262, so as to protect the built-in frequency converter 10.
In some embodiments, the voltage divider switch 25 further comprises more than two voltage divider switches connected in series. The built-in frequency converter 10 is subjected to multistage voltage division by using a plurality of voltage dividing switches, so that multistage protection can be provided for the built-in frequency converter 10, and the safety of the built-in frequency converter 10 is improved.
The present application also provides an air conditioner comprising at least one compressor as described above.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the application following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the application pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It is to be understood that the present application is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the application is limited only by the appended claims.
Claims (10)
1. A compressor circuit for use with a compressor, the compressor including a built-in inverter, the compressor circuit comprising:
the power supply input end is used for being electrically connected with an alternating current power supply;
the voltage dividing switch is electrically connected between the power input end and the built-in frequency converter and comprises a voltage dividing switch controlled end;
the step-down filter is connected with the voltage dividing switch in parallel;
the voltage division controllable device comprises a voltage division detection end and a voltage division control end, wherein the voltage division detection end is electrically connected with the power input end and used for detecting alternating voltage of the power input end, and the voltage division control end is electrically connected with the voltage division switch controlled end and used for controlling the voltage division switch to be disconnected when the alternating voltage of the power input end is higher than a voltage division alternating voltage threshold value.
2. The compressor circuit of claim 1, wherein the voltage divider switch comprises a first voltage divider switch and a second voltage divider switch connected in series, the second voltage divider switch being remote from the built-in frequency converter relative to the first voltage divider switch;
the step-down filter comprises a first step-down filter and a second step-down filter, the first step-down filter is connected with the first voltage dividing switch in parallel, and the second step-down filter is connected with the second voltage dividing switch in parallel;
the voltage division controllable device comprises a first voltage division controllable device and a second voltage division controllable device, and the first voltage division controllable device is used for controlling the first voltage division switch to be disconnected when the alternating voltage at the input end of the power supply is higher than a first voltage division alternating voltage threshold value; the second voltage division controllable device is used for controlling the second voltage division switch to be disconnected when the alternating voltage at the input end of the power supply is higher than a second voltage division alternating voltage threshold value after the first voltage division switch is disconnected; the second divided ac voltage threshold is greater than the first divided ac voltage threshold.
3. The compressor circuit of claim 1, wherein the compressor circuit comprises a controller in communication with the internal frequency converter for receiving a dc side voltage of the internal frequency converter; the voltage division controllable device comprises a voltage division controllable device controlled end which is electrically connected with the controller; and the controller is used for controlling the voltage division controllable device to act when the direct-current side voltage of the built-in frequency converter is higher than the voltage division direct-current voltage threshold value so as to control the voltage division switch to be disconnected.
4. A compressor circuit according to claim 3, wherein the compressor circuit comprises:
the power-off switch is electrically connected between the power input end and the voltage dividing switch and comprises a power-off switch controlled end;
the power-off controllable device comprises a power-off detection end and a power-off control end, wherein the power-off detection end is electrically connected with the power input end and used for detecting alternating voltage of the power input end, and the power-off control end is electrically connected with the power-off switch controlled end and used for controlling the power-off switch to be turned off when the alternating voltage of the power input end is higher than a power-off alternating voltage threshold value after the voltage dividing switch is turned off; the power-off ac voltage threshold is greater than the divided ac voltage threshold.
5. The compressor circuit of claim 4, wherein the power-down controllable device comprises a power-down controllable device controlled end electrically connected to the controller; the controller is used for controlling the power-off controllable device to act when the voltage of the direct-current side of the built-in frequency converter is higher than a power-off direct-current voltage threshold value so as to control the power-off switch to be disconnected; the power-off dc voltage threshold is greater than the divided dc voltage threshold.
6. The compressor circuit of claim 3, wherein the controller includes an expansion interface through which the controller is electrically connected to the controlled side of the voltage dividing controllable device.
7. The compressor circuit of claim 1, wherein the voltage divider switch comprises a contactor; and/or
The voltage division controllable device comprises a relay.
8. The compressor circuit of claim 1, comprising an input reactor electrically connected between the power supply input and the voltage divider switch.
9. A compressor comprising a built-in inverter and a compressor circuit according to any one of claims 1-8 electrically connected to the built-in inverter.
10. An air conditioner comprising at least one compressor according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322080478.7U CN220539827U (en) | 2023-08-03 | 2023-08-03 | Compressor circuit, compressor and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322080478.7U CN220539827U (en) | 2023-08-03 | 2023-08-03 | Compressor circuit, compressor and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220539827U true CN220539827U (en) | 2024-02-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322080478.7U Active CN220539827U (en) | 2023-08-03 | 2023-08-03 | Compressor circuit, compressor and air conditioner |
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| CN (1) | CN220539827U (en) |
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2023
- 2023-08-03 CN CN202322080478.7U patent/CN220539827U/en active Active
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