CN110943434A - Overheat protection device of inverter compressor, inverter compressor system and equipment - Google Patents
Overheat protection device of inverter compressor, inverter compressor system and equipment Download PDFInfo
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- CN110943434A CN110943434A CN201811105491.0A CN201811105491A CN110943434A CN 110943434 A CN110943434 A CN 110943434A CN 201811105491 A CN201811105491 A CN 201811105491A CN 110943434 A CN110943434 A CN 110943434A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
- H02H5/044—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a semiconductor device to sense the temperature
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Abstract
The invention discloses an overheat protection device of a variable frequency compressor, a variable frequency compressor system and equipment, wherein the overheat protection device comprises a temperature detection module and a control module, wherein the temperature detection module is used for detecting a temperature signal of the variable frequency compressor; and the control module is used for determining the temperature of the variable frequency compressor according to the temperature signal and outputting a stop instruction to the variable frequency compressor when the temperature of the variable frequency compressor is greater than a first temperature threshold value. Compared with the forced cut-off of the power supply of the inverter compressor, the overheat protection device provided by the embodiment of the invention can reduce the instant impact on the inverter compressor during overheat protection, and ensure the service life of the inverter compressor.
Description
Technical Field
The invention belongs to the technical field of refrigeration equipment, and particularly relates to an overheat protection device of an inverter compressor, an inverter compressor system and equipment with the inverter compressor system.
Background
Along with the advocation of green energy conservation and the gradual advance of consumption concept, the frequency conversion technology has obvious advantages in the aspects of energy conservation and quick refrigeration, the market occupation ratio of some frequency conversion equipment such as a double-door high-capacity frequency conversion refrigerator shows an obvious growth trend, and along with the increase of the power consumption of the frequency conversion equipment, higher requirements are put forward on the overheat protection of a frequency conversion compressor system. At present, the overheat protection of the variable frequency compressor is mainly the hardware protection of the front end of a power supply, an overheat protector is connected in series on a live wire of a commercial power input end of a variable frequency controller, when overcurrent and overheat occur, the overheat protector forcibly cuts off the power supply of the input end of the variable frequency controller, the variable frequency controller and the compressor stop working, and the control mode of forcibly cutting off the power supply of the variable frequency controller and the compressor generates instantaneous impact on the variable frequency controller and the variable frequency compressor to influence the service life of a product.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. Therefore, a first object of the present invention is to provide an overheat protection device for an inverter compressor, which can reduce the impact on the inverter compressor during overheat control and ensure the product life.
A second object of the present invention is to propose an inverter compressor system comprising such an overheat protection device.
A third object of the present invention is to propose an apparatus comprising such a variable frequency compressor system.
In order to achieve the above object, an overheat protection apparatus for an inverter compressor according to an embodiment of the first aspect of the present invention includes: the temperature detection module is used for detecting a temperature signal of the variable frequency compressor; and the control module is used for determining the temperature of the variable frequency compressor according to the temperature signal and outputting a stop instruction to the variable frequency compressor when the temperature of the variable frequency compressor is greater than a first temperature threshold value.
According to the overheat protection device provided by the embodiment of the invention, when the temperature of the inverter compressor exceeds the threshold value, the shutdown instruction is sent to the inverter compressor, so that the inverter compressor executes the shutdown instruction to perform overheat protection.
In some embodiments, the temperature detection module comprises a Wheatstone bridge for sensing the temperature of the inverter compressor and converting the temperature of the inverter compressor into a sampled voltage; and the control module is used for determining the temperature of the variable-frequency compressor according to the sampling voltage. The temperature signal of the variable frequency compressor is detected through the Wheatstone circuit, and the accuracy is higher.
In some embodiments, the wheatstone circuit includes a thermistor, a first resistor, a second resistor, and a third resistor, wherein the thermistor is disposed corresponding to the inverter compressor, a first end of the thermistor is connected to a preset power source, a second end of the thermistor is connected to a first end of the first resistor, a second end of the first resistor is connected to ground, a first end of the second resistor is connected to the preset power source, a second end of the second resistor is connected to a first end of the third resistor, a second end of the third resistor is connected to ground, a first connection point is provided between the second end of the thermistor and the first end of the first resistor, a second connection point is provided between the second end of the second resistor and the first end of the third resistor, and the first connection point is connected to the control module, the second connecting point is connected with the control module; the control module is specifically configured to calculate a voltage difference between the first connection point and the second connection point according to resistance values of the thermistor, the first resistor, the second resistor, and the third resistor when obtaining the operating temperature of the inverter compressor, and obtain the temperature of the inverter compressor according to the voltage difference.
In some embodiments, the control module comprises an operational amplifier, a control chip and a driving unit, wherein the first connection point is connected with a first input end of the operational amplifier, the second connection point is connected with a second input end of the operational amplifier, and an output end of the operational amplifier is connected with the control chip; the operational amplifier is used for calculating a voltage difference between the first connecting point and the second connecting point according to the resistance values and the amplification coefficients of the thermistor, the first resistor, the second resistor and the third resistor, and the control chip is used for determining the temperature of the variable frequency compressor according to the voltage difference and outputting a stop instruction to the driving unit when the temperature of the compressor is greater than the first temperature threshold value so as to drive the variable frequency compressor to stop.
In some embodiments, the temperature detection module comprises a thermistor for detecting a temperature signal of the inverter compressor; and the control module is specifically used for determining the temperature of the inverter compressor according to the resistance value of the thermistor when the operating temperature of the inverter compressor is obtained. The temperature signal of the variable frequency compressor is detected through the thermistor, and the method is simple and easy to implement.
In some embodiments, the overheat protection device further comprises: and the overheating protection module is used for sensing the temperature of the inverter compressor and cutting off the power supply of the inverter compressor when the temperature of the inverter compressor is greater than a second temperature threshold, wherein the second temperature threshold is greater than the first temperature threshold, so that double overheating protection is realized, and the method is safer and more reliable.
In some embodiments, the thermistor is attached to the shell at the terminal cover of the inverter compressor, so that the influence of the ambient temperature is avoided, and the accuracy is improved.
In some embodiments, the overheat protection module is attached to the shell at the terminal cover of the inverter compressor, so that the influence of the ambient temperature is avoided, and the accuracy is improved.
In order to achieve the above object, the inverter compressor system according to the second aspect of the present invention includes an inverter compressor and the overheat protection device according to the above embodiment.
According to the inverter compressor system disclosed by the embodiment of the invention, the overheat protection device disclosed by the embodiment is adopted, so that the overheat protection of the inverter compressor can be realized, and the instant impact on the inverter compressor during the overheat protection is reduced.
To achieve the above objects, an apparatus according to an embodiment of the third aspect of the present invention includes the inverter compressor system according to the above embodiment.
According to the equipment provided by the embodiment of the invention, the frequency conversion compressor system is more stable and reliable by adopting the embodiment.
Drawings
FIG. 1 is a block diagram of an overheat protection apparatus of an inverter compressor according to an embodiment of the present invention;
FIG. 2 is a block diagram of an overheat protection apparatus of an inverter compressor according to another embodiment of the present invention;
FIG. 3 is a block diagram of an overheat protection apparatus of an inverter compressor according to still another embodiment of the present invention;
FIG. 4 is a block diagram of an overheat protection apparatus of an inverter compressor according to still another embodiment of the present invention;
FIG. 5 is a block diagram of an inverter compressor system according to an embodiment of the present invention;
fig. 6 is a block diagram of an apparatus according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
An overheat protection apparatus of an inverter compressor according to an embodiment of the first aspect of the present invention will be described with reference to the accompanying drawings.
Fig. 1 is a block diagram of an overheat protection apparatus of an inverter compressor according to an embodiment of the present invention, and as shown in fig. 1, an overheat protection apparatus 100 of an embodiment of the present invention includes a temperature detection module 10 and a control module 20.
The temperature detection module 10 is used for detecting a temperature signal of the inverter compressor; the control module 20 is configured to determine a temperature of the inverter compressor according to the temperature signal of the inverter compressor, and output a shutdown instruction to the inverter compressor when the temperature of the inverter compressor is greater than a first temperature threshold, so that the inverter compressor is shutdown to avoid an overheat fault and ensure a service life.
Specifically, when the inverter compressor is running, the temperature detection module 10 detects a temperature signal of the inverter compressor in real time, for example, senses the temperature of the inverter compressor and converts the temperature signal into a voltage or current sampling signal, the control module 20 determines the temperature condition of the inverter compressor according to the temperature signal of the inverter compressor, for example, converts the received voltage or current sampling signal into a corresponding temperature value of the inverter compressor, and further determines whether the inverter compressor is overheated according to the temperature value, and when the temperature of the inverter compressor is lower than a first temperature threshold, the inverter compressor keeps running normally; and when the temperature is higher than the first temperature threshold value, outputting a stop instruction to the variable frequency compressor to control the variable frequency compressor to stop so as to perform overheat protection.
According to the overheat protection device 100 of the embodiment of the invention, when the temperature of the inverter compressor exceeds the threshold value, the shutdown instruction is sent to the inverter compressor, so that the inverter compressor executes the shutdown instruction to perform overheat protection.
In some embodiments, the temperature detection module 10 includes a thermistor for detecting a temperature signal of the inverter compressor; the control module 20 determines the temperature of the inverter compressor based on the resistance of the thermistor. Specifically, when the inverter compressor operates, the temperature of the inverter compressor is sensed through the thermistor, the resistance value of the thermistor changes along with the temperature, the control module 20 can judge the temperature condition of the inverter compressor according to the resistance value of the thermistor, and further, when the temperature of the inverter compressor exceeds a first temperature threshold value, the temperature condition is judged to be too hot, and then a shutdown instruction is sent to the inverter compressor so as to perform overheat protection.
Further, in some embodiments, the temperature detecting module 10 adopts a wheatstone bridge, the wheatstone bridge may be a bridge circuit composed of resistors, the change of the physical quantity is measured by using the change of the resistance value, the control module 20, such as a single chip, collects the voltage at two ends of the variable resistor and then processes the voltage, so that the corresponding change of the physical quantity can be calculated, and the measuring method is a measuring method with high precision. In the embodiment of the invention, the Wheatstone bridge is used for sensing the temperature of the inverter compressor and converting the temperature of the inverter compressor into the sampling voltage, so that a more accurate temperature signal of the inverter compressor can be obtained. Different sampling voltages correspond to different temperatures of the inverter compressor, and the control module 20 can determine the temperature of the inverter compressor according to the sampling voltages and control the inverter compressor to stop when the temperature exceeds a first temperature threshold value, so as to realize overheat protection.
In an embodiment, as shown in fig. 2, the wheatstone circuit includes a thermistor Rx, a first resistor R1, a second resistor R2 and a third resistor R3, wherein the thermistor Rx is disposed corresponding to the inverter compressor for sensing the temperature of the inverter compressor, a first end of the thermistor Rx is connected to a preset power supply, a second end of the thermistor Rx is connected to a first end of the first resistor R1, a second end of the first resistor R1 is connected to ground, a first end of the second resistor R2 is connected to the preset power supply, a second end of the second resistor R2 is connected to a first end of the third resistor R3, a second end of the third resistor R3 is connected to ground, a first connection point O1 is provided between the second end of the thermistor Rx and the first end of the first resistor R1, a second connection point O2 is provided between the second end of the second resistor R2 and the first end of the third resistor R3, and the first connection point O1 is connected to the control module 20, the second connection point O2 is connected to the control module 20; the control module 20 is specifically configured to, when obtaining the operating temperature of the inverter compressor, calculate a voltage difference between the first connection point O1 and the second connection point O2 according to the resistance values of the thermistor Rx, the first resistor R1, the second resistor R2, and the third resistor R3, and obtain the temperature of the inverter compressor according to the voltage difference.
Specifically, the temperature of the inverter compressor is different, the resistance value of the thermistor Rx is different, the voltage of the sampled voltage obtained by the control module 20 from the first connection point O1 is changed accordingly, and the sampled voltage obtained from the second connection point O2 is not changed, so that the voltage difference between the sampled voltage obtained from the first connection point O1 and the sampled voltage obtained from the second connection point O2 is different according to the temperature of the inverter compressor, the control module 20 calculates the voltage difference between the first connection point O1 and the second connection point O2 according to the resistance values of the thermistor Rx, the first resistor R1, the second resistor R2 and the third resistor R3, the different voltage differences correspond to different temperatures, and the temperature of the inverter compressor can be determined according to the voltage differences according to the corresponding relationship, so as to determine whether the temperature of the inverter compressor is overheated or not.
In some embodiments, as shown in fig. 3, the control module 20 includes an operational amplifier 21, a control chip 22 and a driving unit 23, wherein the first connection point O1 is connected to a first input terminal of the operational amplifier 21, the second connection point O2 is connected to a second input terminal of the operational amplifier 21, and an output terminal of the operational amplifier 21 is connected to the control chip 22; the operational amplifier 21 is configured to calculate a voltage difference between the first connection point O1 and the second connection point O2 according to resistance values and amplification coefficients of the thermistor Rx, the first resistor R1, the second resistor R2, and the third resistor R3, and the control chip 22 is configured to determine a temperature of the inverter compressor according to the voltage difference, and output a shutdown instruction to the driving unit 23 to drive the inverter compressor to shutdown when the temperature of the compressor is greater than a first temperature threshold.
For example, assuming that Rx is Ra when the temperature of the inverter compressor is 5 ℃, the sampling signal of the control chip 22, i.e., the voltage difference between the first connection point O1 and the second connection point O2, is K Vcc (Ra/R1-R2/R3); assuming that Rx is Rb when the temperature of the inverter compressor is 10 ℃, the sampling signal of the control chip 22 is K Vcc (Rb/R1-R2/R3). Therefore, when the temperatures of the inverter compressors are different, the sampling signals of the control chip 22 are different, and the sampling signals correspond to different temperatures of the inverter compressors, so that the control chip 22 can judge the temperature of the inverter compressors according to the sampling signals, when the temperature of the inverter compressors exceeds a first temperature threshold value, the inverter compressors are considered to be overheated, the inverter compressors are controlled to stop, and compared with forced power cut-off, the impact on the inverter compressors can be reduced, and the service life of products is ensured.
In order to avoid the control module 20 from failing to cause a fault, in some embodiments, as shown in fig. 4, the overheat protection device 100 of the embodiment of the present invention further includes an overheat protection module 30, and the overheat protection module 30 is configured to sense the temperature of the inverter compressor and cut off the power supply to the inverter compressor when the temperature of the inverter compressor is greater than a second temperature threshold, where the second temperature threshold is greater than the first temperature threshold.
In an embodiment, as shown in fig. 4, the overheating protection module 30 may be connected to the front end of the AC input of the AC power source. In consideration of the assembly process, the temperature detection module 10, the control module 20 and the overheating protection module 30 can be installed in the same electrical appliance box, the temperature detection module 10 and the control module 20 can be integrated in a variable frequency controller of the variable frequency compressor, and the thermistor Rx and the overheating protection module 30 are respectively and hermetically attached to a shell at a terminal cover of the variable frequency compressor through the electrical appliance box, so that the environmental temperature can be effectively isolated, and the temperature sensing precision of the thermistor Rx and the overheating protection module 30 is improved.
Specifically, when the inverter controller works normally, after the commercial power is switched on, the temperature of the inverter compressor is lower than a first temperature threshold value, the control module 20 starts to work, the thermistor Rx senses the shell temperature of the inverter compressor and converts the shell temperature into a voltage acquisition signal through the wheatstone bridge for output, the operational amplifier circuit 21 calculates the voltage difference of a bridge arm of the wheatstone bridge, the control chip 22 receives the voltage difference acquisition signal and converts the voltage difference acquisition signal into the temperature corresponding to the inverter compressor, when the temperature is lower than the first temperature threshold value, the control chip 22 controls the driving unit 23 to enable the inverter compressor to keep normal operation, and when the temperature is higher than the first temperature threshold value, the control chip 22 controls the driving unit 23 to enable the inverter compressor to stop; under the condition that the control module 20 fails to work, the driving unit 23 is out of control, when the temperature of the inverter compressor is higher than the first temperature threshold and lower than the second temperature threshold, the inverter compressor is still not stopped, and the internal contacts of the overheating protection module 30 are in a closed state; the temperature of the inverter compressor rises gradually, when the temperature of the inverter compressor is higher than the second temperature threshold, the internal electric shock of the overheating protection module 30 is cut off, the mains supply at the front end of the control module 20 is cut off, and the inverter compressor is forced to stop running, so that the dual overheating protection control of the inverter compressor is realized.
In summary, when control module 20 normally works, control inverter compressor through monitoring inverter compressor's temperature, avoided cutting off the instantaneous impact of front end power supply to inverter compressor by force, simultaneously, guaranteed because when harsh environment leads to control module 20 to become invalid, can force to cut off the commercial power supply by overtemperature prote module 30, prevent that the incident from taking place. Through the dual overheat protection control circuit, the safety and the reliability of the variable frequency compressor are improved.
Based on the over-temperature protection apparatus of the inverter compressor of the above embodiment, an inverter compressor system according to an embodiment of a second aspect of the present invention is described below with reference to the accompanying drawings.
Fig. 5 is a block diagram of an inverter compressor system according to an embodiment of the present invention, and as shown in fig. 5, an inverter compressor system 1000 according to an embodiment of the present invention includes an inverter compressor 200 and the overheating protection device 100 according to the above embodiment, wherein the structure and operation of the overheating protection device 100 can refer to the description of the above embodiment.
According to the inverter compressor system 1000 of the embodiment of the invention, by adopting the overheating protection device 100 of the above embodiment, the overheating protection of the inverter compressor can be realized, and the instant impact on the inverter compressor during the overheating protection can be reduced.
An apparatus according to an embodiment of the third aspect of the present invention is described below with reference to the drawings. Fig. 6 is a block diagram of an apparatus according to an embodiment of the present invention, and as shown in fig. 6, an apparatus 10000 of the embodiment of the present invention includes the inverter compressor system 1000 of the above embodiment, and in the embodiment, the apparatus 10000 may include an inverter refrigerator-freezer, an inverter freezer, or other apparatuses to which the inverter compressor system of the embodiment of the present invention is applied.
The device 10000 according to the embodiment of the present invention is more stable and reliable by adopting the inverter compressor system 1000 of the above embodiment.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (10)
1. An overheat protection apparatus for an inverter compressor, comprising:
the temperature detection module is used for detecting a temperature signal of the variable frequency compressor;
and the control module is used for determining the temperature of the variable frequency compressor according to the temperature signal and outputting a stop instruction to the variable frequency compressor when the temperature of the variable frequency compressor is greater than a first temperature threshold value.
2. The overheat protection apparatus for an inverter compressor according to claim 1,
the temperature detection module comprises a Wheatstone bridge, and the Wheatstone bridge is used for sensing the temperature of the inverter compressor and converting the temperature of the inverter compressor into sampling voltage;
and the control module is used for determining the temperature of the variable-frequency compressor according to the sampling voltage.
3. The over-temperature protection device of the inverter compressor according to claim 2,
the Wheatstone circuit comprises a thermistor, a first resistor, a second resistor and a third resistor, wherein, the thermistor is arranged corresponding to the variable frequency compressor, the first end of the thermistor is connected with a preset power supply, the second end of the thermistor is connected with the first end of the first resistor, the second end of the first resistor is connected with the ground end, the first end of the second resistor is connected with the preset power supply, the second end of the second resistor is connected with the first end of the third resistor, the second end of the third resistor is connected with the ground end, a first connecting point is arranged between the second end of the thermistor and the first end of the first resistor, a second connection point is arranged between the second end of the second resistor and the first end of the third resistor, the first connecting point is connected with the control module, and the second connecting point is connected with the control module;
the control module is specifically configured to calculate a voltage difference between the first connection point and the second connection point according to resistance values of the thermistor, the first resistor, the second resistor, and the third resistor when obtaining the operating temperature of the inverter compressor, and obtain the temperature of the inverter compressor according to the voltage difference.
4. The overheat protection apparatus for an inverter compressor according to claim 3,
the control module comprises an operational amplifier, a control chip and a driving unit, wherein the first connecting point is connected with a first input end of the operational amplifier, the second connecting point is connected with a second input end of the operational amplifier, and an output end of the operational amplifier is connected with the control chip;
the operational amplifier is used for calculating a voltage difference between the first connecting point and the second connecting point according to the resistance values and the amplification coefficients of the thermistor, the first resistor, the second resistor and the third resistor, and the control chip is used for determining the temperature of the variable frequency compressor according to the voltage difference and outputting a stop instruction to the driving unit when the temperature of the compressor is greater than the first temperature threshold value so as to drive the variable frequency compressor to stop.
5. The overheat protection apparatus for an inverter compressor according to claim 1,
the temperature detection module comprises a thermistor, and the thermistor is used for detecting a temperature signal of the variable frequency compressor;
and the control module is specifically used for determining the temperature of the inverter compressor according to the resistance value of the thermistor when the operating temperature of the inverter compressor is obtained.
6. The inverter compressor overheat protection apparatus according to claim 1, further comprising:
and the overheating protection module is used for sensing the temperature of the inverter compressor and cutting off the power supply of the inverter compressor when the temperature of the inverter compressor is greater than a second temperature threshold value, wherein the second temperature threshold value is greater than the first temperature threshold value.
7. The overheat protection apparatus for an inverter compressor according to claim 3 or 5, wherein the thermistor is attached to a case at a terminal cover of the inverter compressor.
8. The inverter compressor overheat protection apparatus according to claim 6 wherein the overheat protection module is attached to the housing at the terminal cover of the inverter compressor.
9. An inverter compressor system, characterized in that the inverter compressor system comprises an inverter compressor and an overheat protection apparatus as claimed in any one of claims 1 to 8.
10. An apparatus, characterized in that the apparatus comprises the inverter compressor system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811105491.0A CN110943434A (en) | 2018-09-21 | 2018-09-21 | Overheat protection device of inverter compressor, inverter compressor system and equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811105491.0A CN110943434A (en) | 2018-09-21 | 2018-09-21 | Overheat protection device of inverter compressor, inverter compressor system and equipment |
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| CN110943434A true CN110943434A (en) | 2020-03-31 |
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| CN201811105491.0A Pending CN110943434A (en) | 2018-09-21 | 2018-09-21 | Overheat protection device of inverter compressor, inverter compressor system and equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114362105A (en) * | 2022-01-12 | 2022-04-15 | 苏州清越光电科技股份有限公司 | Prevent overheated high-power frequency conversion equipment |
| WO2022095471A1 (en) * | 2020-11-06 | 2022-05-12 | 长春捷翼汽车零部件有限公司 | Temperature control protection device and corresponding charging device |
| CN115498605A (en) * | 2022-10-09 | 2022-12-20 | 奥然科技生物(深圳)有限责任公司 | Temperature control system with multiple over-temperature protection functions and method thereof |
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| CN103490385A (en) * | 2012-06-12 | 2014-01-01 | 广东高标电子科技有限公司 | Motor temperature protection device, motor, electric vehicle and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2022095471A1 (en) * | 2020-11-06 | 2022-05-12 | 长春捷翼汽车零部件有限公司 | Temperature control protection device and corresponding charging device |
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| CN115498605A (en) * | 2022-10-09 | 2022-12-20 | 奥然科技生物(深圳)有限责任公司 | Temperature control system with multiple over-temperature protection functions and method thereof |
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Application publication date: 20200331 |