Integrated compressor, control method and device thereof, storage medium and program product

Abstract

The invention discloses a control method and device of an integrated compressor, the integrated compressor, a storage medium and a computer program product. The method comprises the steps that an electric refrigeration radiator is connected with a compressor barrel to form a conduction refrigeration device; under the condition that the frequency converter operates, the temperature of a radiator substrate is obtained, the environment temperature in the frequency converter is obtained, and the temperature of a compressor cylinder is obtained; controlling the power of the electric refrigeration device according to the temperature of the radiator substrate and the environment temperature in the frequency converter; and the opening degree of the throttling device is controlled according to the temperature of the compressor cylinder. According to the scheme, the electric refrigeration radiator in the electric refrigeration device is connected with the compressor cylinder to form the conduction refrigeration device, and redundant temperature control integrating electric refrigeration and conduction refrigeration is adopted, so that the internal temperature distribution of the frequency converter is balanced, and the operation reliability of the frequency converter is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of integrated compressors, and specifically relates to a control method and device for an integrated compressor, an integrated compressor, a storage medium and a computer program product, and more particularly to a control method and device for the temperature in the inverter cavity of an integrated compressor, an integrated compressor, a storage medium and a computer program product. Background Art

[0002] In integrated compressors, inverters are an important part of the transmission system and are widely used in a wide variety of applications. In complex environments such as high temperature, high humidity or low temperature in central air-conditioning systems, integrated magnetic levitation compressors integrate compressors and inverters, with compact structures, small spaces, and high loss space density, making it very easy to experience local high and low temperatures and condensation.

[0003] In related solutions, the inverters used in the central air-conditioning transmission system are mostly set as independent structural units with large spaces and internal evaporators or cooling devices. The internal temperature and humidity of the inverter are reduced through internal circulation. The balance of temperature distribution has an important impact on the reliability and stability of the system. However, it is difficult to control the balance of temperature distribution inside the inverter. If the temperature distribution inside the inverter is uneven, it will cause the internal components of the inverter to fail or even be damaged, affecting the reliability of the inverter operation.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention and do not constitute an admission that the above contents are prior art. Summary of the invention

[0005] The object of the present invention is to provide a control method, device, integrated compressor, storage medium and computer program product for an integrated compressor, so as to solve the problem that it is difficult to control the balance of temperature distribution inside the inverter. If the temperature distribution inside the inverter is uneven, it will cause the internal components of the inverter to fail or even be damaged, affecting the reliability of the operation of the inverter. The electric refrigeration radiator in the electric refrigeration device is connected to the compressor cylinder to form a conduction refrigeration device, and redundant temperature control integrating electric refrigeration and conduction refrigeration is adopted to balance the temperature distribution inside the inverter and improve the reliability of the operation of the inverter.

[0006] The present invention provides a control method for an integrated compressor, wherein the integrated compressor comprises a compressor and a frequency converter, and further comprises a radiator substrate, an electric refrigeration device and a system cooling channel; the compressor comprises a compressor barrel, the electric refrigeration device comprises an electric refrigeration radiator, and the electric refrigeration radiator is connected to the compressor barrel to form a conduction refrigeration device; the radiator substrate is used to dissipate heat for a power module in the frequency converter; a throttling device is arranged on a cold motor and a bearing channel branch in the system cooling channel; the control method for the integrated compressor comprises: when the frequency converter is running, obtaining the temperature of the radiator substrate, obtaining the ambient temperature inside the frequency converter, and obtaining the temperature of the compressor barrel; controlling the power of the electric refrigeration device according to the temperature of the radiator substrate and the ambient temperature inside the frequency converter; and controlling the opening of the throttling device according to the temperature of the compressor barrel.

[0007] In some embodiments, the power of the electric refrigeration device is controlled according to the temperature of the heat sink substrate and the ambient temperature inside the inverter, including: determining whether the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy less than a set first temperature threshold; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy less than the set first temperature threshold, determining whether the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy greater than a set second temperature threshold and less than a set third temperature threshold; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy greater than the set second temperature threshold and less than the set third temperature threshold, controlling the power of the electric refrigeration device to operate at a set first power; wherein the set first power is a power within a set error range of the rated power of the electric refrigeration device; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the inverter do not simultaneously satisfy greater than the set second temperature threshold and less than the set third temperature threshold, controlling the power of the electric refrigeration device to operate at a set second power; wherein the set second power is less than the set first power.

[0008] In some embodiments, the power of the electric refrigeration device is controlled according to the temperature of the heat sink substrate and the ambient temperature inside the inverter, and also includes: determining whether the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy a first temperature threshold value that is less than the set temperature threshold; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the inverter do not simultaneously satisfy a first temperature threshold value that is less than the set temperature threshold, controlling the power of the electric refrigeration device to increase; wherein, controlling the power of the electric refrigeration device to increase includes: increasing the power of the electric refrigeration device by increasing a third power at preset time intervals; after a first set time, determining whether the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy a first temperature threshold value that is greater than the set temperature threshold; if If it is determined that the temperature of the radiator substrate and the ambient temperature inside the inverter simultaneously satisfy a set first temperature threshold, the power of the electric refrigeration device continues to be controlled to increase; if it is determined that the temperature of the radiator substrate and the ambient temperature inside the inverter do not simultaneously satisfy a set first temperature threshold, then it is determined whether the temperature of the radiator substrate and the ambient temperature inside the inverter simultaneously satisfy a set second temperature threshold and less than a set third temperature threshold: if so, the power of the electric refrigeration device is controlled to operate at a set first power; otherwise, the power of the electric refrigeration device is controlled to operate at a set second power; wherein the set first power is a power within a set error range of the rated power of the electric refrigeration device; and the set second power is less than the set first power.

[0009] In some embodiments, controlling the power of the electric refrigeration device according to the temperature of the heat sink substrate and the ambient temperature inside the inverter also includes: while continuing to control the power increase of the electric refrigeration device, after a second set time, determining whether the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy and are still greater than a set second temperature threshold; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the inverter do not simultaneously satisfy and are still greater than the set second temperature threshold, continuing to control the power increase of the electric refrigeration device; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy and are still greater than the set second temperature threshold, determining that the temperature distribution inside the inverter is uneven, controlling the inverter to shut down, and issuing a reminder message that the temperature inside the inverter is overheated.

[0010] In some embodiments, the opening of the throttling device is controlled according to the temperature of the compressor barrel, including: determining whether the temperature of the compressor barrel is less than a set fourth temperature threshold; if it is determined that the temperature of the compressor barrel is less than the set fourth temperature threshold, controlling the opening of the throttling device to decrease to a set first opening; if it is determined that the temperature of the compressor barrel is greater than or equal to the set fourth temperature threshold, controlling the opening of the throttling device to increase to a set second opening; after controlling the opening of the throttling device to decrease to the set first opening, or after controlling the opening of the throttling device to increase to the set second opening, determining whether the temperature of the compressor barrel satisfies a condition greater than the set fourth temperature threshold and less than the set fifth temperature threshold; if it is determined that the temperature of the compressor barrel satisfies a condition greater than the set fourth temperature threshold and less than the set fifth temperature threshold, maintaining the current operation of the inverter; if it is determined that the temperature of the compressor barrel does not satisfy a condition greater than the set fourth temperature threshold and less than the set fifth temperature threshold, returning to continue controlling the opening of the throttling device to decrease to the set first opening.

[0011] In some embodiments, the electric refrigeration device also has a fan; wherein the power of the electric refrigeration device includes: the power of at least one of the electric refrigeration radiator and the fan in the electric refrigeration device; the fan is installed on the front side of the electric refrigeration radiator; a refrigeration strip is provided on the back side of the electric refrigeration radiator, and the bottom of the electric refrigeration radiator is fixedly connected to the compressor cylinder.

[0012] Matching the above method, the present invention provides a control device for an integrated compressor on the other hand, the integrated compressor has a compressor and a frequency converter, and also has a radiator substrate, an electric refrigeration device and a system cooling channel; the compressor has a compressor barrel, the electric refrigeration device has an electric refrigeration radiator, and the electric refrigeration radiator is connected to the compressor barrel to form a conduction refrigeration device; the radiator substrate is used to dissipate heat for the power module in the frequency converter; a throttling device is provided on the cold motor and bearing channel branches in the system cooling channel; the control device for the integrated compressor comprises: an acquisition unit, configured to acquire the temperature of the radiator substrate, the ambient temperature inside the frequency converter, and the temperature of the compressor barrel when the frequency converter is running; a control unit, configured to control the power of the electric refrigeration device according to the temperature of the radiator substrate and the ambient temperature inside the frequency converter; the control unit is also configured to control the opening of the throttling device according to the temperature of the compressor barrel.

[0013] In some embodiments, the control unit controls the power of the electric refrigeration device according to the temperature of the heat sink substrate and the ambient temperature inside the inverter, including: determining whether the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy less than a set first temperature threshold; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy less than the set first temperature threshold, determining whether the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy greater than a set second temperature threshold and less than a set third temperature threshold; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the inverter simultaneously satisfy greater than the set second temperature threshold and less than the set third temperature threshold, controlling the power of the electric refrigeration device to operate at a set first power; wherein the set first power is a power within a set error range of the rated power of the electric refrigeration device; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the inverter do not simultaneously satisfy greater than the set second temperature threshold and less than the set third temperature threshold, controlling the power of the electric refrigeration device to operate at a set second power; wherein the set second power is less than the set first power.

[0014] In some embodiments, the control unit controls the power of the electric refrigeration device according to the temperature of the radiator substrate and the ambient temperature inside the inverter, and also includes: determining whether the temperature of the radiator substrate and the ambient temperature inside the inverter simultaneously satisfy a first temperature threshold value that is less than the set temperature threshold; if it is determined that the temperature of the radiator substrate and the ambient temperature inside the inverter do not simultaneously satisfy a first temperature threshold value that is less than the set temperature threshold, then controlling the power of the electric refrigeration device to increase; wherein, controlling the power of the electric refrigeration device to increase includes: increasing the power of the electric refrigeration device by increasing a third power that is set at intervals of a preset time; after the first set time, determining whether the temperature of the radiator substrate and the ambient temperature inside the inverter simultaneously satisfy a first temperature threshold value that is greater than the set temperature threshold. threshold; if it is determined that the temperature of the radiator substrate and the ambient temperature inside the inverter simultaneously satisfy a set first temperature threshold, continue to control the power of the electric refrigeration device to increase; if it is determined that the temperature of the radiator substrate and the ambient temperature inside the inverter do not simultaneously satisfy a set first temperature threshold, determine whether the temperature of the radiator substrate and the ambient temperature inside the inverter simultaneously satisfy a set second temperature threshold and less than a set third temperature threshold: if so, control the power of the electric refrigeration device to run at a set first power; otherwise, control the power of the electric refrigeration device to run at a set second power; wherein the set first power is a power within a set error range of the rated power of the electric refrigeration device; the set second power is less than the set first power.

[0015] In some embodiments, the control unit controls the power of the electric refrigeration device according to the temperature of the radiator substrate and the ambient temperature inside the inverter, and also includes: while continuing to control the power increase of the electric refrigeration device, after a second set time, determining whether the temperature of the radiator substrate and the ambient temperature inside the inverter simultaneously satisfy and are still greater than a set second temperature threshold; if it is determined that the temperature of the radiator substrate and the ambient temperature inside the inverter do not simultaneously satisfy and are still greater than the set second temperature threshold, continuing to control the power increase of the electric refrigeration device; if it is determined that the temperature of the radiator substrate and the ambient temperature inside the inverter simultaneously satisfy and are still greater than the set second temperature threshold, determining that the temperature distribution inside the inverter is uneven, controlling the inverter to shut down, and issuing a reminder message that the temperature inside the inverter is overheated.

[0016] In some embodiments, the control unit controls the opening of the throttling device according to the temperature of the compressor barrel, including: determining whether the temperature of the compressor barrel is less than a set fourth temperature threshold; if it is determined that the temperature of the compressor barrel is less than the set fourth temperature threshold, controlling the opening of the throttling device to decrease to a set first opening; if it is determined that the temperature of the compressor barrel is greater than or equal to the set fourth temperature threshold, controlling the opening of the throttling device to increase to a set second opening; after controlling the opening of the throttling device to decrease to the set first opening, or after controlling the opening of the throttling device to increase to the set second opening, determining whether the temperature of the compressor barrel satisfies a condition greater than the set fourth temperature threshold and less than the set fifth temperature threshold; if it is determined that the temperature of the compressor barrel satisfies a condition greater than the set fourth temperature threshold and less than the set fifth temperature threshold, maintaining the current operation of the inverter; if it is determined that the temperature of the compressor barrel does not satisfy a condition greater than the set fourth temperature threshold and less than the set fifth temperature threshold, returning to continue controlling the opening of the throttling device to decrease to the set first opening.

[0017] In some embodiments, the electric refrigeration device also has a fan; wherein the power of the electric refrigeration device includes: the power of at least one of the electric refrigeration radiator and the fan in the electric refrigeration device; the fan is installed on the front side of the electric refrigeration radiator; a refrigeration strip is provided on the back side of the electric refrigeration radiator, and the bottom of the electric refrigeration radiator is fixedly connected to the compressor cylinder.

[0018] Matching the above-mentioned device, the present invention provides an integrated compressor on another aspect, including: the control device of the integrated compressor mentioned above.

[0019] In accordance with the above method, the present invention provides a storage medium on the other hand, wherein the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the steps of the integrated compressor control method described above.

[0020] Matching the above method, the present invention further provides a computer program product on the other hand, including a computer program, which implements the steps of the above-mentioned integrated compressor control method when executed by a processor.

[0021] Therefore, the scheme of the present invention is to provide a radiator substrate for dissipating heat from a rectifier module and an inverter module, and an electric refrigeration device composed of an electric refrigeration radiator and a fan in the integrated compressor, and the electric refrigeration radiator is connected to the compressor barrel to form a conduction refrigeration device; an electronic expansion valve is provided on the cold motor and bearing flow channel branch in the system cooling flow channel of the integrated compressor; when the inverter is running, the temperature of the radiator substrate, the temperature of the internal environment of the inverter, and the temperature of the compressor barrel are collected, and the power of the electric refrigeration device is controlled according to the collected temperature of the radiator substrate and the temperature of the internal environment of the inverter; the opening of the electronic expansion valve is controlled according to the collected temperature of the compressor barrel to achieve balanced control of the internal temperature of the inverter; thus, by connecting the electric refrigeration radiator in the electric refrigeration device to the compressor barrel to form a conduction refrigeration device, redundant temperature control integrating electric refrigeration and conduction refrigeration is adopted to make the internal temperature distribution of the inverter balanced, thereby improving the reliability of the operation of the inverter.

[0022] Other features and advantages of the present invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the present invention.

[0023] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic flow chart of an embodiment of a method for controlling an integrated compressor of the present invention;

[0025] Figure 2 is a flow chart of an embodiment of a first control process of the power of the electric refrigeration device in the method of the present invention;

[0026] Figure 3 is a flow chart of an embodiment of a second control process of the power of the electric refrigeration device in the method of the present invention;

[0027] Figure 4is a flow chart of an embodiment of a third control process of the power of the electric refrigeration device in the method of the present invention;

[0028] Figure 5 A schematic flow chart of an embodiment of controlling the opening of the throttling device in the method of the present invention;

[0029] Figure 6 It is a structural schematic diagram of an embodiment of a control device for an integrated compressor of the present invention;

[0030] Figure 7 It is a flow chart of the temperature sampling and control method of the frequency converter system;

[0031] Figure 8 It is the temperature control topology diagram of the inverter system;

[0032] Fig. 9 It is a schematic diagram of the layout of the integrated compressor inverter system;

[0033] Fig.10 It is the structural diagram of the top of the inverter;

[0034] Fig.11 It is a structural diagram of the inverter side;

[0035] Fig.12 This is a schematic diagram of the structure of the compressor side.

[0036] In conjunction with the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0037] 100-electric cooling radiator; 101-fan; 102-semi-controlled rectifier device; 103-inverter module; 104-compressor wiring cover; 105-compressor barrel; 106-air duct; 107-system cooling flow channel; 108-cooling motor and bearing flow channel branch; 109-cooling inverter flow channel branch; 110-radiator base plate; 111-electronic expansion valve; 120-acquisition unit; 130-control unit. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0039] Considering that it is difficult to control the balance of temperature distribution inside the inverter, if the temperature or humidity inside the inverter is inappropriate (such as too high, too cold or overheated, etc.), it will cause the internal components of the inverter to fail or even be damaged, affecting the reliability of the inverter operation.

[0040] The temperature balance control strategy in the related scheme requires the installation of heat dissipation devices such as evaporators and fans in the inverter cavity. However, the inverter has a compact structure, a small space, and the integrated compressor requires a small volume, which greatly limits the application of the temperature balance control strategy in the related scheme. It is impossible to set a conventional internal circulation heat dissipation device in this compressor and inverter integration scheme to achieve balanced control of the inverter cavity temperature.

[0041] Specifically, the temperature balance control strategy in the inverter cavity in the related scheme is to build a small evaporator and a box body into the inverter cavity, and use a fan to form an internal circulation heat dissipation to control the internal ambient temperature of the inverter. However, the space in the inverter cavity is limited, and the integrated compressor requires a small volume. The evaporator and the corresponding fan required in the related scheme cannot be designed inside the integrated compressor to achieve the balanced control of the temperature in the inverter cavity. It can be seen that the inverter structure of the integrated compressor is compact and the space is small. It is impossible to set the internal circulation heat dissipation device in the related scheme in this compressor and inverter integration scheme to achieve the balanced control of the temperature in the inverter cavity.

[0042] Therefore, the scheme of the present invention proposes a control method for an integrated compressor, specifically a method for controlling the temperature inside the inverter cavity of an integrated compressor. There is no need to set a higher-power heat dissipation device in the inverter cavity, but instead a redundant temperature control scheme integrating electric refrigeration and conduction refrigeration is adopted. The internal temperature of the inverter can be evenly and efficiently cooled, thereby achieving balanced control of the temperature inside the inverter cavity.

[0043] According to an embodiment of the present invention, a control method for an integrated compressor is provided. Figure 1 A flow chart of an embodiment of the method of the present invention is shown. The integrated compressor has a compressor and a frequency converter, and also has a radiator substrate 110, an electric refrigeration device and a system cooling channel 107; the compressor has a compressor barrel 105, and the electric refrigeration device has an electric refrigeration radiator 100, and the electric refrigeration radiator 100 is connected to the compressor barrel 105 to form a conduction refrigeration device; the radiator substrate 110 is arranged on the top of the frequency converter, and is used to dissipate heat for power modules in the frequency converter, such as a rectifier module and an inverter module 103, and a rectifier module such as a semi-controlled rectifier device 102; a throttling device (such as an electronic expansion valve 11) is provided on the cold motor and bearing channel branch 108 in the system cooling channel 107. In the scheme of the present invention, as Figure 1As shown, the control method of the integrated compressor includes: steps S110 to S130.

[0044] In step S110 , when the inverter is running, the temperature of the radiator substrate 110 is obtained, the ambient temperature inside the inverter is obtained, and the temperature of the compressor barrel 105 is obtained. Figure 7 The figure is a flow chart of the temperature sampling and control method of the inverter system. Figure 7 As shown, the temperature sampling and control method of the inverter system includes: step 1, the inverter is running, and then steps 2 and 3 are respectively executed to respectively collect the temperature of the radiator substrate 110 and the environment (i.e., the cabinet environment of the inverter cabinet), and the temperature of the compressor barrel 105. In the scheme of the present invention, the radiator substrate 110, the surface of the compressor barrel 105, and the environment in the inverter are all embedded with temperature sensing packages for temperature sampling. After the inverter starts running, the inverter main control unit starts to take and process temperature values ​​in real time.

[0045] In step S120, the power of the electric refrigeration device is controlled according to the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter, so as to achieve a balanced temperature distribution inside the inverter.

[0046] In step S130, the opening of the throttling device is controlled according to the temperature of the compressor barrel 105 so as to achieve a balanced temperature distribution inside the inverter.

[0047] The solution of the present invention is based on the electric refrigeration device in the inverter cavity, and a conduction refrigeration device is set, and then a redundant temperature control solution integrating electric refrigeration and conduction refrigeration is adopted to effectively control the ambient temperature in the inverter cavity. When the temperature in the cavity is high, the refrigeration device is flexibly controlled. This solution can avoid the failure and damage of components caused by excessive internal ambient temperature or humidity, overcooling or overheating, reduce the internal working environment temperature and system loss of the inverter, and enhance the reliability of inverter operation. It solves the problem that if the internal temperature or humidity of the inverter is not appropriate (such as too high, too cold or overheated, etc.), it will cause the internal components of the inverter to fail or even be damaged, affecting the reliability of the inverter operation; it also solves the problem that the inverter structure of the integrated compressor is compact and the space is small, and it is impossible to set a conventional internal circulation heat dissipation device in this compressor and inverter integration solution to achieve balanced control of the temperature in the inverter cavity.

[0048] In some implementations, in step S120, the power of the electric refrigeration device is controlled according to the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter, including: a first control process of the power of the electric refrigeration device.

[0049] Combine the following Figure 2The flowchart of an embodiment of the first control process of the power of the electric refrigeration device in the method of the present invention further illustrates the specific process of the first control process of the power of the electric refrigeration device in step S120, including: step S210 to step S240.

[0050] Step S210, determining whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both less than a set first temperature threshold; wherein the set first temperature threshold is, for example, temperature Test1.

[0051] Step S220, if it is determined that the temperature of the radiator substrate 110 and the ambient temperature inside the inverter are both less than the set first temperature threshold, then determine whether the temperature of the radiator substrate 110 and the ambient temperature inside the inverter are both greater than the set second temperature threshold and less than the set third temperature threshold; wherein the set second temperature threshold is such as temperature Test2, and the set third temperature threshold is such as temperature Test3.

[0052] Step S230, if it is determined that the temperature of the radiator substrate 110 and the ambient temperature inside the inverter are both greater than the set second temperature threshold and less than the set third temperature threshold, the power of the electric refrigeration device is controlled to operate at the set first power; wherein the set first power is the power within the set error range of the rated power of the electric refrigeration device; the rated power is such as power P1, and the set error range is such as ±5%.

[0053] Step S240, if it is determined that the temperature of the radiator substrate 110 and the ambient temperature inside the inverter do not simultaneously satisfy the conditions that they are greater than the set second temperature threshold and less than the set third temperature threshold, then the power of the electric refrigeration device is controlled to operate at the set second power; wherein the set second power is less than the set first power.

[0054] like Figure 7 As shown, the temperature sampling and control method of the inverter system also includes:

[0055] Step 2: Start to detect the temperature of the heat sink substrate 110 and the environment in real time through the temperature sensing package, and then execute step 21.

[0056] Step 21, determine whether the collected temperature values ​​of the heat sink substrate 110 and the environment (the area with the most severe heating of the inverter) are both less than the temperature Test1: if so, execute step 22, otherwise execute step 23. By using two temperatures, namely the temperature values ​​of the heat sink substrate 110 and the environment (the area with the most severe heating of the inverter) for judgment at the same time, the ambient temperature can be effectively controlled while ensuring that the heat sink meets the heat dissipation requirements of the module.

[0057] Step 22, determine whether the collected temperature values ​​of the radiator substrate 110 and the environment (the area where the inverter heats up the most seriously) are greater than the temperature Test2 and less than the temperature Test3: if so, control the electric refrigeration device (such as the electric refrigeration radiator 100) to operate at the rated power P1±5%; otherwise, control the electric refrigeration device (such as the electric refrigeration radiator 100) to operate with a smaller cooling power P2.

[0058] In the scheme of the present invention, in the integrated structure of the integrated compressor inverter, a conductive refrigeration device connected to an electric refrigeration plate (i.e., an electric refrigeration radiator 100) and a compressor barrel is provided, and the power of the electric refrigeration device is controlled according to the temperature of the radiator substrate 110 and the ambient temperature inside the inverter. Therefore, when it is identified that the ambient temperature or humidity inside the inverter is too high, the control system will flexibly adjust the refrigeration device to avoid the problem of internal components failing and being unable to operate normally due to excessive temperature or humidity or excessive condensation.

[0059] In some implementations, the power of the electric refrigeration device is controlled according to the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter in step S120, and further includes: a second control process of the power of the electric refrigeration device.

[0060] Combine the following Figure 3 The flowchart of an embodiment of the second control process of the power of the electric refrigeration device in the method of the present invention further illustrates the specific process of the second control process of the power of the electric refrigeration device in step S120, including: step S310 to step S350.

[0061] Step S310, determining whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both less than a set first temperature threshold; wherein the set first temperature threshold is, for example, temperature Test1.

[0062] Step S320, if it is determined that the temperature of the radiator substrate 110 and the ambient temperature inside the inverter do not simultaneously satisfy a first temperature threshold value that is less than the set temperature, then the power of the electric refrigeration device is controlled to increase; wherein, controlling the power of the electric refrigeration device to increase includes: increasing the power of the electric refrigeration device by increasing a set third power at intervals of a preset time length; wherein, the preset time length is such as s seconds, and the set third power is such as power P3.

[0063] Step S330: after a first set time, determine whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter both meet a set first temperature threshold.

[0064] Step S340: If it is determined that the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter both meet a set first temperature threshold, the power of the electric refrigeration device is continued to be increased.

[0065] Step S350, if it is determined that the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter do not simultaneously satisfy a temperature greater than the set first temperature threshold, then determine whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter simultaneously satisfy a temperature greater than the set second temperature threshold and less than the set third temperature threshold: if so, then control the power of the electric refrigeration device to operate at the set first power; otherwise, control the power of the electric refrigeration device to operate at the set second power; wherein the set first power is a power within a set error range of the rated power of the electric refrigeration device; and the set second power is less than the set first power. wherein the rated power is such as power P1, and the set error range is such as ±5%.

[0066] like Figure 7 As shown, the temperature sampling and control method of the inverter system also includes:

[0067] Step 23, control the cooling power and power supply power of the electric cooling device (such as the electric cooling radiator 100) to increase, such as increasing the cooling power P3 every s seconds, and then execute step 24. The cooling power is the cooling capacity of the cooling device, and the power supply power is the power given to the cooling device by the power supply; for example, the AC supplies 5kW of power to the air conditioner, and 5kW is the power supply power; while the cooling power of the air conditioner is 3kW, and 3kW is the cooling power.

[0068] Step 24. After time t1, the inverter main control system detects the temperature values ​​of the radiator substrate 110 and the environment (the area with the most serious heating of the inverter) again to determine whether the temperature values ​​of the radiator substrate 110 and the environment (the area with the most serious heating of the inverter) are both greater than temperature Test1: if so, execute step 25; otherwise, return to execute step 22.

[0069] Step 25 , controlling the power of the electric refrigeration device (such as the electric refrigeration radiator 100 ) to continue to increase, and then executing step 26 .

[0070] In the scheme of the present invention, the power of the electric refrigeration device is further controlled according to the temperature of the radiator substrate 110 and the ambient temperature inside the inverter, thereby preventing the internal working environment temperature or humidity of the inverter from being too high, and excessive condensation from causing electrical components to fail or be damaged, and preventing normal operation and reducing system losses, thereby greatly improving the reliability of the inverter operation.

[0071] In the relevant schemes, only electric cooling is generally used for heat dissipation, and other auxiliary heat dissipation methods are not involved. For electric refrigeration devices (such as electric cooling plates) and compressor cylinders, the power of electric cooling plates is limited, and the heat dissipation effect of electric cooling devices alone is small; in the scheme of the present invention, a conduction cooling device is provided to connect the electric cooling plates and the compressor cylinder, and the electric cooling device is connected and fixed to the compressor cylinder, such as the installation holes provided on the bottom of the electric cooling plates and the compressor cylinder are connected and fixed by bolts, which can further improve the heat dissipation effect of the electric cooling device through conduction heat dissipation.

[0072] In some implementations, the step S120 controls the power of the electric refrigeration device according to the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter, and further includes: a third control process of the power of the electric refrigeration device.

[0073] Combine the following Figure 4 The flowchart of an embodiment of the third control process of the power of the electric refrigeration device in the method of the present invention further illustrates the specific process of the third control process of the power of the electric refrigeration device in step S120, including: step S410 to step S430.

[0074] Step S410, while continuing to control the power increase of the electric refrigeration device, after a second set time, determining whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both still greater than a set second temperature threshold.

[0075] Step S420: If it is determined that the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter do not simultaneously satisfy the second temperature threshold and are still greater than the set second temperature threshold, then the power of the electric refrigeration device is continued to be increased.

[0076] Step S430: If it is determined that the temperature of the radiator substrate 110 and the ambient temperature inside the inverter are both greater than the set second temperature threshold, it is determined that the temperature distribution inside the inverter is uneven, the inverter is controlled to shut down, and a reminder message that the internal temperature of the inverter is over-temperature is issued.

[0077] like Figure 7 As shown, the temperature sampling and control method of the inverter system also includes:

[0078] Step 26: After time t2, if the temperature values ​​of the heat sink substrate 110 and the environment (the area with the most serious heating of the inverter) are still greater than the temperature Test2, the control system issues an over-temperature warning and ends the current control.

[0079] In steps 21 to 26, when the temperature values ​​of the radiator substrate 110 and the environment (the area with the most severe heating of the inverter) collected N times (N≥3) are all less than the temperature Test1 and greater than the temperature Test2 and less than the temperature Test3, the electric cooling radiator 100 will be controlled by the inverter main control unit, and the output cooling power will be adjusted to P1±5% for operation; if the temperature values ​​of the radiator substrate 110 and the environment (the area with the most severe heating of the inverter) are less than Test1 but not greater than Test2, the inverter main control unit will adjust the operating cooling power of the electric cooling radiator 100 to P2±5%.

[0080] When the temperature values ​​of the radiator substrate 110 and the environment (the area with the most serious heating of the inverter) collected N times (N≥3) are greater than Test1, the inverter main control unit increases the operating cooling power of the electric cooling radiator 100 by the cooling power P3 every s seconds (s is a certain time, in seconds). After time t1, the inverter main control unit detects the radiator substrate 110 and the internal environment temperature of the inverter again. If the temperature value is still greater than Test1, the electric cooling radiator 100 continues to increase the rated value directly at the above-mentioned cooling power acceleration. After time t2, it continues to detect the substrate 110 and the environment temperature. If it is still greater than Test1, the inverter control system will issue an overtemperature warning and transmit the information to the compressor main control unit through CAN communication to shut down the operation.

[0081] Among them, Test1, Test2, Test3, Test4, Test5 are certain temperature thresholds, P, P1, P2, P3 are certain thresholds of cooling power, and time t1 and time t2 are certain time thresholds. Among them, P is the cooling power of the electric refrigeration device, and Test1≤Test2≤Test3≤Test4≤Test5.

[0082] The inverter main control unit obtains the temperature value through sampling of the temperature sensing package, and then flexibly controls the cooling power of the electric cooling radiator to ensure that condensed water will not be generated inside the inverter due to overcooling or overheating.

[0083] In some embodiments, the specific process of controlling the opening of the throttling device according to the temperature of the compressor barrel 105 in step S130 is described in the following exemplary embodiment.

[0084] Combine the following Figure 5 The flowchart of an embodiment of controlling the opening of the throttling device in the method of the present invention further illustrates the specific process of controlling the opening of the throttling device in step S130, including: steps S510 to S560.

[0085] Step S510, determining whether the temperature of the compressor barrel 105 is less than a set fourth temperature threshold; wherein the set fourth temperature threshold is, for example, temperature Test4.

[0086] Step S520, if it is determined that the temperature of the compressor barrel 105 is lower than the set fourth temperature threshold, the opening of the throttling device is controlled to be reduced to the set first opening; wherein the set first opening is the opening corresponding to the step number bit1.

[0087] Step S530, if it is determined that the temperature of the compressor barrel 105 is greater than or equal to the set fourth temperature threshold, the opening of the throttling device is controlled to increase to the set second opening; wherein the set second opening is the opening corresponding to the step number bit2.

[0088] Step S540, after controlling the opening of the throttling device to decrease to the set first opening, or after controlling the opening of the throttling device to increase to the set second opening, determine whether the temperature of the compressor barrel 105 satisfies the condition that is greater than the set fourth temperature threshold and less than the set fifth temperature threshold; wherein the set fifth temperature threshold is such as temperature Test5.

[0089] Step S550: If it is determined that the temperature of the compressor barrel 105 satisfies a setting greater than a fourth temperature threshold and less than a fifth temperature threshold, the current operation of the inverter is maintained;

[0090] Step S560: If it is determined that the temperature of the compressor barrel 105 does not meet the set fourth temperature threshold and is less than the set fifth temperature threshold, return to continue controlling the opening of the throttling device to decrease to the set first opening.

[0091] like Figure 7 As shown, the temperature sampling and control method of the inverter system also includes:

[0092] Step 3: While executing step 2, start real-time detection of the temperature of the compressor barrel 105 through the temperature sensing package, and then execute step 31.

[0093] Step 31. When the inverter starts running, the inverter main control unit will also detect the temperature of the compressor barrel 105 in real time, and sample the temperature of the compressor barrel 105 in the same sampling method as mentioned above to determine whether the temperature of the compressor barrel 105 is less than the temperature Test4: if so, execute step 32, otherwise execute step 33.

[0094] Step 32, when the temperature value of the compressor barrel 105 is less than the temperature Test4, the electronic expansion valve 111 arranged on the motor and bearing flow channel branch 108 at the entrance of the system cooling flow channel 107 is controlled by the inverter main control unit to gradually reduce the opening steps to bit1, and then execute step 34.

[0095] Step 33, when the temperature value of the compressor barrel 105 is greater than or equal to the temperature Test4, the step number of the electronic expansion valve 111 is gradually increased to bit2, and then step 34 is executed until the detected temperature value of the compressor barrel 105 is greater than the temperature Test4 and less than the temperature Test5. Among them, bit1 and bit2 are certain step number thresholds of the opening degree, such as the opening step number is in the range of 0 to 480 degrees.

[0096] Step 34, determine whether the temperature value of the compressor barrel 105 is greater than the temperature Test4 and less than the temperature Test5: if so, end the current control, otherwise return to step 32, until the detected temperature value of the compressor barrel 105 is greater than the temperature Test4 and less than the temperature Test5.

[0097] Through this flexible temperature control method of the cylinder 105, on the one hand, while ensuring that the cooling requirements of the motor and bearings are met, on the other hand, it greatly reduces the condensation inside the inverter and the compressor due to the low temperature of the cylinder 105, and the high humidity, which may cause failure and damage of the live components or circuits inside the inverter, thereby further improving the operating reliability of the integrated compressor inverter.

[0098] In some embodiments, the electric refrigeration device further has a fan 101; wherein the power of the electric refrigeration device includes: the power of at least one of the electric refrigeration radiator 100 and the fan 101 in the electric refrigeration device; the fan 101 is installed on the front of the electric refrigeration radiator 100; a refrigeration strip is provided on the back of the electric refrigeration radiator 100, and the bottom of the electric refrigeration radiator 100 is fixedly connected to the compressor barrel 105 (such as fixedly connected by bolts). wherein the front of the electric refrigeration radiator 100 and the back of the electric refrigeration radiator 100 are two opposite sides; for the two opposite sides of the electric refrigeration radiator 100, when one side of the electric refrigeration radiator 100 is the front side, the other side of the electric refrigeration radiator 100 is the back side.

[0099] In the solution of the present invention, by having an electric cooling radiator 100 and a fan 101 built in, on the one hand, the electric cooling radiator 100 is directly connected to the compressor barrel 105, which solves the problem of difficult heat dissipation and high loss due to space limitations, so that the heat dissipation inside the inverter adopts the efficient heat dissipation effect of electric cooling and conduction cooling. On the other hand, the redundant temperature control solution integrating electric cooling and conduction cooling is adopted to prevent the failure and damage of electrical components caused by excessively high working environment temperature or humidity in the inverter, excessive condensation and dew, and the inability to operate normally and reduce system losses, thereby greatly improving the reliability of the inverter operation.

[0100] Fig. 9 The schematic diagram of the layout of the integrated compressor inverter system is as follows: Fig. 9 As shown, the inverter and compressor are integrated into one unit. Fig.10 This is a schematic diagram of the structure of the top of the inverter. Fig.11 This is a schematic diagram of the structure of the inverter side. Fig.12 This is a schematic diagram of the structure of the compressor side. Fig.10 , Fig.11 and Fig.12 As shown, the top of the inverter has an electric cooling radiator 100, a fan 101, a semi-controlled rectifier device 102, an inverter module 103, a system cooling channel 107, a cold motor and bearing channel branch 108, a cold inverter channel branch 109 and a radiator substrate 110; the side of the inverter has a compressor wiring cover 104, a compressor barrel 105, an air duct 106 and an electronic expansion valve 111, and the electronic expansion valve 111 is arranged on the cold motor and bearing channel branch 108; Fig.12 As shown, the electric cooling radiator 100 is located on the side of the compressor.

[0101] Figure 8 Figure 1 is a schematic diagram of the temperature control topology of the inverter system. Figure 8 As shown, the solution of the present invention provides a control system for controlling an integrated cooling system of a frequency converter and a compressor. The integrated system includes a main control unit, a temperature sampling module, an electric cooling radiator 100 and other control modules in the frequency converter system. The main circuit components inside the frequency converter are electrically connected by copper bars and busbars. The frequency converter is directly laid on the top and side of the compressor barrel 105. Figure 8In the example shown, the compressor main control unit 130 and the inverter main control unit 130 can communicate via CAN (Controller Area Network, a serial communication protocol for real-time applications); after the AC power source is connected to the wiring terminals R, S, and T, it passes through the half-controlled rectifier circuit composed of the switch tube VT1, the switch tube VT3, the switch tube VT5, the diode VD4, the diode VD6, and the diode VD2, and then is filtered by the capacitor C1, and then inverted by the full-controlled inverter circuit to obtain AC power, which provides three-phase voltages U, V, and W to the three-phase winding of the motor M. The filter unit is connected in parallel with the half-controlled rectifier circuit, and the filter power supply provides DC+ and DC- power supply signals to the compressor main control unit and the inverter main control unit respectively after passing through the switch power supply. The inverter main control unit receives the humidity sampling signal, the temperature sampling signal of the radiator substrate 110, the temperature sampling signal of the environment, and the temperature sampling signal of the compressor barrel 105, and the inverter main control unit sends a trigger signal ug to the half-controlled rectifier circuit, and the inverter main control unit sends a PWM pulse signal to the full-controlled inverter circuit.

[0102] In the solution of the present invention, a cooling strip is provided on the back of the electric cooling radiator 100, and the bottom of the electric cooling radiator 100 is directly bolted and fixed to the compressor barrel 105. The fan 101 is installed on the other side of the electric cooling radiator 100. The temperature of the wind sucked in from the back is consistent with the internal ambient temperature of the inverter. The wind first passes through the cooling strip on the back of the electric cooling radiator 100. On the one hand, the heat is transferred to the compressor barrel 105 by conduction. On the other hand, the electric cooling radiator 100 itself cools down the sucked hot air, and then forms cold air to blow into the inverter. After cooling the heating components inside the inverter, it finally reaches the side of the compressor wiring cover 104. The compressor wiring cover 104 and the compressor barrel 105 are formed as an integral casting; according to Fig.10 As can be seen from the schematic diagram of the system flow channel 107, the cold motor and bearing flow channel branch 108 is close to the compressor wiring cover 104, so the surface temperature of the compressor wiring cover 104 is relatively low. When the hot air generated by cooling the heating components inside the inverter reaches the side of the compressor wiring cover 104, the hot air is cooled down.

[0103] It can be seen that the internal ambient temperature of the inverter is reduced through electric refrigeration and conduction redundant refrigeration, the efficiency of cooling the internal temperature of the inverter is improved, and the refrigeration power of the electric refrigeration radiator 100 is flexibly adjusted, which greatly reduces the system power consumption, making the inverter and compressor control flexible and highly reliable.

[0104] According to the technical solution of this embodiment, a radiator substrate for dissipating heat for a rectifier module and an inverter module, and an electric refrigeration device consisting of an electric refrigeration radiator and a fan are provided in the integrated compressor for the compressor and the inverter in the integrated compressor, and the electric refrigeration radiator is connected to the compressor barrel to form a conduction refrigeration device; an electronic expansion valve is provided on the cold motor and the bearing flow channel branch in the system cooling flow channel of the integrated compressor; when the inverter is running, the temperature of the radiator substrate, the temperature of the internal environment of the inverter, and the temperature of the compressor barrel are collected, and the power of the electric refrigeration device is controlled according to the collected temperature of the radiator substrate and the temperature of the internal environment of the inverter; the opening of the electronic expansion valve is controlled according to the collected temperature of the compressor barrel to achieve balanced control of the internal temperature of the inverter; thus, by connecting the electric refrigeration radiator in the electric refrigeration device to the compressor barrel to form a conduction refrigeration device, redundant temperature control integrating electric refrigeration and conduction refrigeration is adopted to make the internal temperature distribution of the inverter balanced, thereby improving the reliability of the operation of the inverter.

[0105] According to an embodiment of the present invention, a control device for an integrated compressor corresponding to the control method for the integrated compressor is also provided. Figure 6 The structural schematic diagram of an embodiment of the device of the present invention is shown. The integrated compressor has a compressor and a frequency converter, and also has a radiator substrate 110, an electric refrigeration device and a system cooling channel 107; the compressor has a compressor barrel 105, and the electric refrigeration device has an electric refrigeration radiator 100, and the electric refrigeration radiator 100 is connected to the compressor barrel 105 to form a conduction refrigeration device; the radiator substrate 110 is arranged on the top of the frequency converter, and is used to dissipate heat for power modules in the frequency converter, such as a rectifier module and an inverter module 103, and the rectifier module is such as a semi-controlled rectifier device 102; a throttling device (such as an electronic expansion valve 11) is arranged on the cold motor and bearing channel branch 108 in the system cooling channel 107; in the scheme of the present invention, as Figure 6 As shown, the control device of the integrated compressor includes: an acquisition unit 120 and a control unit 130.

[0106] The acquisition unit 120 is configured to acquire the temperature of the radiator substrate 110, the ambient temperature inside the inverter, and the temperature of the compressor barrel 105 when the inverter is running. The specific functions and processing of the acquisition unit 120 refer to step S110. Figure 7 The figure is a flow chart of the temperature sampling and control method of the inverter system. Figure 7As shown, the temperature sampling and control method of the inverter system includes: step 1, the inverter is running, and then steps 2 and 3 are respectively executed to respectively collect the temperature of the radiator substrate 110 and the environment (i.e., the cabinet environment of the inverter cabinet), and the temperature of the compressor barrel 105. In the scheme of the present invention, the radiator substrate 110, the surface of the compressor barrel 105, and the environment in the inverter are all embedded with temperature sensing packages for temperature sampling. After the inverter starts running, the inverter main control unit starts to take and process temperature values ​​in real time.

[0107] The control unit 130 is configured to control the power of the electric refrigeration device according to the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter, so as to make the temperature distribution inside the inverter balanced. The specific functions and processing of the control unit 130 refer to step S120.

[0108] The control unit 130 is further configured to control the opening of the throttling device according to the temperature of the compressor barrel 105, so as to make the temperature distribution inside the inverter balanced. The specific functions and processing of the control unit 130 are also shown in step S130.

[0109] The solution of the present invention is based on the electric refrigeration device in the inverter cavity, and a conduction refrigeration device is set, and then a redundant temperature control solution integrating electric refrigeration and conduction refrigeration is adopted to effectively control the ambient temperature in the inverter cavity. When the temperature in the cavity is high, the refrigeration device is flexibly controlled. This solution can avoid the failure and damage of components caused by excessive internal ambient temperature or humidity, overcooling or overheating, reduce the internal working environment temperature and system loss of the inverter, and enhance the reliability of inverter operation. It solves the problem that if the internal temperature or humidity of the inverter is not appropriate (such as too high, too cold or overheated, etc.), it will cause the internal components of the inverter to fail or even be damaged, affecting the reliability of the inverter operation; it also solves the problem that the inverter structure of the integrated compressor is compact and the space is small, and it is impossible to set a conventional internal circulation heat dissipation device in this compressor and inverter integration solution to achieve balanced control of the temperature in the inverter cavity.

[0110] In some embodiments, the control unit 130 controls the power of the electric refrigeration device according to the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter, including: a first control process of the power of the electric refrigeration device, specifically as follows:

[0111] The control unit 130 is further configured to determine whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both less than a set first temperature threshold. The specific functions and processing of the control unit 130 are also shown in step S210. The set first temperature threshold is, for example, temperature Test1.

[0112] The control unit 130 is further configured to determine whether the temperature of the radiator substrate 110 and the ambient temperature inside the inverter are both greater than the set second temperature threshold and less than the set third temperature threshold if it is determined that the temperature of the radiator substrate 110 and the ambient temperature inside the inverter are both less than the set first temperature threshold. The specific functions and processing of the control unit 130 are also shown in step S220. The set second temperature threshold is such as temperature Test2, and the set third temperature threshold is such as temperature Test3.

[0113] The control unit 130 is further configured to control the power of the electric refrigeration device to operate at a set first power if it is determined that the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both greater than a set second temperature threshold and less than a set third temperature threshold; wherein the set first power is a power within a set error range of the rated power of the electric refrigeration device. The specific functions and processing of the control unit 130 are also referred to step S230. The rated power is such as power P1, and the set error range is such as ±5%.

[0114] The control unit 130 is further configured to control the power of the electric refrigeration device to operate at a set second power if it is determined that the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter do not simultaneously meet the conditions of being greater than a set second temperature threshold and less than a set third temperature threshold; wherein the set second power is less than the set first power. The specific functions and processing of the control unit 130 are also referred to step S240.

[0115] like Figure 7 As shown, the temperature sampling and control method of the inverter system also includes:

[0116] Step 2: Start to detect the temperature of the heat sink substrate 110 and the environment in real time through the temperature sensing package, and then execute step 21.

[0117] Step 21 , determine whether the collected temperature values ​​of the heat sink substrate 110 and the environment (the area with the most serious heat generation of the inverter) are both less than the temperature Test1: if so, execute step 22; otherwise, execute step 23.

[0118] Step 22, determine whether the collected temperature values ​​of the radiator substrate 110 and the environment (the area where the inverter heats up the most seriously) are greater than the temperature Test2 and less than the temperature Test3: if so, control the electric refrigeration device (such as the electric refrigeration radiator 100) to operate at the rated power P1±5%; otherwise, control the electric refrigeration device (such as the electric refrigeration radiator 100) to operate with a smaller cooling power P2.

[0119] In the scheme of the present invention, in the integrated structure of the integrated compressor inverter, a conduction refrigeration device connecting the electric refrigeration plate and the compressor barrel is provided, and the power of the electric refrigeration device is controlled according to the temperature of the radiator substrate 110 and the ambient temperature inside the inverter. Therefore, when it is identified that the ambient temperature or humidity inside the inverter is too high, the control system will flexibly adjust the refrigeration device to avoid the problem of internal components failing and being unable to operate normally due to excessive temperature or humidity or excessive condensation.

[0120] In some embodiments, the control unit 130 controls the power of the electric refrigeration device according to the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter, and further includes: a second control process of the power of the electric refrigeration device, which is specifically as follows:

[0121] The control unit 130 is further configured to determine whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both less than a set first temperature threshold. The specific functions and processing of the control unit 130 are also shown in step S310. The set first temperature threshold is, for example, temperature Test1.

[0122] The control unit 130 is further configured to control the power of the electric refrigeration device to increase if it is determined that the temperature of the radiator substrate 110 and the ambient temperature inside the inverter do not simultaneously meet the set first temperature threshold; wherein, controlling the power of the electric refrigeration device to increase includes: increasing the power of the electric refrigeration device by increasing the set third power every preset time. The specific functions and processing of the control unit 130 are also referred to step S320. wherein, the preset time is s seconds, and the set third power is power P3.

[0123] The control unit 130 is further configured to determine whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both greater than a set first temperature threshold after a first set time. The specific functions and processing of the control unit 130 are also shown in step S330.

[0124] The control unit 130 is further configured to continue to control the power of the electric refrigeration device to increase if it is determined that the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both greater than a set first temperature threshold. The specific functions and processing of the control unit 130 are also shown in step S340.

[0125] The control unit 130 is also specifically configured to determine whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both greater than the set second temperature threshold and less than the set third temperature threshold if it is determined that the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter do not simultaneously meet the set first temperature threshold: if so, the power of the electric refrigeration device is controlled to operate at the set first power; otherwise, the power of the electric refrigeration device is controlled to operate at the set second power; wherein the set first power is the power within the set error range of the rated power of the electric refrigeration device; and the set second power is less than the set first power. The specific functions and processing of the control unit 130 can also be found in step S350. wherein the rated power is such as power P1, and the set error range is such as ±5%.

[0126] like Figure 7 As shown, the temperature sampling and control method of the inverter system also includes:

[0127] Step 23, controlling the cooling power and power supply of the electric cooling device (such as the electric cooling radiator 100) to increase, such as increasing the cooling power P3 every s seconds, and then executing step 24.

[0128] Step 24. After time t1, the inverter main control system detects the temperature values ​​of the radiator substrate 110 and the environment (the area with the most serious heating of the inverter) again to determine whether the temperature values ​​of the radiator substrate 110 and the environment (the area with the most serious heating of the inverter) are both greater than temperature Test1: if so, execute step 25; otherwise, return to execute step 22.

[0129] Step 25 , controlling the power of the electric refrigeration device (such as the electric refrigeration radiator 100 ) to continue to increase, and then executing step 26 .

[0130] In the scheme of the present invention, the power of the electric refrigeration device is further controlled according to the temperature of the radiator substrate 110 and the ambient temperature inside the inverter, thereby preventing the internal working environment temperature or humidity of the inverter from being too high, and excessive condensation from causing electrical components to fail or be damaged, and preventing normal operation and reducing system losses, thereby greatly improving the reliability of the inverter operation.

[0131] In the relevant schemes, only electric cooling is generally used for heat dissipation, and other auxiliary heat dissipation methods are not involved. For electric refrigeration devices (such as electric cooling plates) and compressor cylinders, the power of electric cooling plates is limited, and the heat dissipation effect of electric cooling devices alone is small; in the scheme of the present invention, a conduction cooling device is provided to connect the electric cooling plates and the compressor cylinder, and the electric cooling device is connected and fixed to the compressor cylinder, such as the installation holes provided on the bottom of the electric cooling plates and the compressor cylinder are connected and fixed by bolts, which can further improve the heat dissipation effect of the electric cooling device through conduction heat dissipation.

[0132] In some embodiments, the control unit 130 controls the power of the electric refrigeration device according to the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter, and further includes: a third control process of the power of the electric refrigeration device, which is specifically as follows:

[0133] The control unit 130 is further configured to determine whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both greater than a set second temperature threshold after a second set time, while continuing to control the power increase of the electric refrigeration device. The specific functions and processing of the control unit 130 are also shown in step S410.

[0134] The control unit 130 is further configured to continue to control the power of the electric refrigeration device to increase if it is determined that the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are not both greater than the set second temperature threshold. The specific functions and processing of the control unit 130 are also shown in step S420.

[0135] The control unit 130 is further configured to determine that the temperature distribution inside the inverter is uneven, control the inverter to shut down, and issue a reminder message that the temperature inside the inverter is over-temperature if it is determined that the temperature of the radiator substrate 110 and the ambient temperature inside the inverter are both greater than the set second temperature threshold. The specific functions and processing of the control unit 130 are also shown in step S430.

[0136] like Figure 7 As shown, the temperature sampling and control method of the inverter system also includes:

[0137] Step 26: After time t2, if the temperature values ​​of the heat sink substrate 110 and the environment (the area with the most serious heating of the inverter) are still greater than the temperature Test2, the control system issues an over-temperature warning and ends the current control.

[0138] In steps 21 to 26, when the temperature values ​​of the radiator substrate 110 and the environment (the area with the most severe heating of the inverter) collected N times (N≥3) are all less than the temperature Test1 and greater than the temperature Test2 and less than the temperature Test3, the electric cooling radiator 100 will be controlled by the inverter main control unit, and the output cooling power will be adjusted to P1±5% for operation; if the temperature values ​​of the radiator substrate 110 and the environment (the area with the most severe heating of the inverter) are less than Test1 but not greater than Test2, the inverter main control unit will adjust the operating cooling power of the electric cooling radiator 100 to P2±5%.

[0139] When the temperature values ​​of the radiator substrate 110 and the environment (the area with the most serious heating of the inverter) collected N times (N≥3) are greater than Test1, the inverter main control unit increases the operating cooling power of the electric cooling radiator 100 by the cooling power P3 every s seconds (s is a certain time, in seconds). After time t1, the inverter main control unit detects the radiator substrate 110 and the internal environment temperature of the inverter again. If the temperature value is still greater than Test1, the electric cooling radiator 100 continues to increase the rated value directly at the above-mentioned cooling power acceleration. After time t2, it continues to detect the substrate 110 and the environment temperature. If it is still greater than Test1, the inverter control system will issue an overtemperature warning and transmit the information to the compressor main control unit through CAN communication to shut down the operation.

[0140] Among them, Test1, Test2, Test3, Test4, and Test5 are certain temperature thresholds, P, P1, P2, and P3 are certain thresholds of cooling power, and time t1 and time t2 are certain time thresholds.

[0141] The inverter main control unit obtains the temperature value through sampling of the temperature sensing package, and then flexibly controls the cooling power of the electric cooling radiator to ensure that condensed water will not be generated inside the inverter due to overcooling or overheating.

[0142] In some embodiments, the control unit 130 controls the opening of the throttling device according to the temperature of the compressor barrel 105, including:

[0143] The control unit 130 is further configured to determine whether the temperature of the compressor barrel 105 is less than a set fourth temperature threshold. The specific functions and processing of the control unit 130 are also shown in step S510. The set fourth temperature threshold is, for example, temperature Test4.

[0144] The control unit 130 is further configured to control the opening of the throttling device to decrease to a set first opening if it is determined that the temperature of the compressor barrel 105 is less than a set fourth temperature threshold. The specific functions and processing of the control unit 130 are also referred to step S520. The set first opening is the opening corresponding to the step number bit1.

[0145] The control unit 130 is further configured to control the opening of the throttling device to increase to a set second opening if it is determined that the temperature of the compressor barrel 105 is greater than or equal to a set fourth temperature threshold. The specific functions and processing of the control unit 130 are also referred to step S530. The set second opening is the opening corresponding to the step number bit2.

[0146] The control unit 130 is further configured to determine whether the temperature of the compressor barrel 105 satisfies a fourth temperature threshold value greater than a set temperature threshold value and less than a fifth temperature threshold value after controlling the opening of the throttling device to decrease to a set first opening degree, or after controlling the opening of the throttling device to increase to a set second opening degree. The specific functions and processing of the control unit 130 are also referred to step S540. The set fifth temperature threshold value is such as temperature Test5.

[0147] The control unit 130 is further configured to maintain the current operation of the inverter if it is determined that the temperature of the compressor barrel 105 satisfies a fourth temperature threshold value greater than a set temperature threshold value and less than a fifth temperature threshold value. The specific functions and processing of the control unit 130 are also shown in step S550.

[0148] The control unit 130 is further configured to return to continue controlling the opening of the throttling device to decrease to the set first opening if it is determined that the temperature of the compressor barrel 105 does not meet the set fourth temperature threshold and is less than the set fifth temperature threshold. The specific functions and processing of the control unit 130 are also shown in step S560.

[0149] like Figure 7 As shown, the temperature sampling and control method of the inverter system also includes:

[0150] Step 3: While executing step 2, start real-time detection of the temperature of the compressor barrel 105 through the temperature sensing package, and then execute step 31.

[0151] Step 31. When the inverter starts running, the inverter main control unit will also detect the temperature of the compressor barrel 105 in real time, and sample the temperature of the compressor barrel 105 in the same sampling method as mentioned above to determine whether the temperature of the compressor barrel 105 is less than the temperature Test4: if so, execute step 32, otherwise execute step 33.

[0152] Step 32, when the temperature value of the compressor barrel 105 is less than the temperature Test4, the electronic expansion valve 111 arranged on the motor and bearing flow channel branch 108 at the entrance of the system cooling flow channel 107 is controlled by the inverter main control unit to gradually reduce the opening steps to bit1, and then execute step 34.

[0153] Step 33: When the temperature value of the compressor barrel 105 is greater than or equal to the temperature Test4, the step number of the electronic expansion valve 111 is gradually increased to bit2, and then step 34 is executed until the detected temperature value of the compressor barrel 105 is greater than the temperature Test4 and less than the temperature Test5. Among them, bit1 and bit2 are certain step number thresholds of the opening degree.

[0154] Step 34, determine whether the temperature value of the compressor barrel 105 is greater than the temperature Test4 and less than the temperature Test5: if so, end the current control, otherwise return to step 32, until the detected temperature value of the compressor barrel 105 is greater than the temperature Test4 and less than the temperature Test5.

[0155] Through this flexible temperature control method of the cylinder 105, on the one hand, while ensuring that the cooling requirements of the motor and bearings are met, on the other hand, it greatly reduces the condensation inside the inverter and the compressor due to the low temperature of the cylinder 105, and the high humidity, which may cause failure and damage of the live components or circuits inside the inverter, thereby further improving the operating reliability of the integrated compressor inverter.

[0156] In some embodiments, the electric refrigeration device also has a fan 101; wherein the power of the electric refrigeration device includes: the power of at least one of the electric refrigeration radiator 100 and the fan 101 in the electric refrigeration device; the fan 101 is installed on the front of the electric refrigeration radiator 100; a refrigeration strip is provided on the back of the electric refrigeration radiator 100, and the bottom of the electric refrigeration radiator 100 is fixedly connected to the compressor barrel 105 (such as fixedly connected by bolts).

[0157] In the solution of the present invention, by having an electric cooling radiator 100 and a fan 101 built in, on the one hand, the electric cooling radiator 100 is directly connected to the compressor barrel 105, which solves the problem of difficult heat dissipation and high loss due to space limitations, so that the heat dissipation inside the inverter adopts the efficient heat dissipation effect of electric cooling and conduction cooling. On the other hand, the redundant temperature control solution integrating electric cooling and conduction cooling is adopted to prevent the failure and damage of electrical components caused by excessively high working environment temperature or humidity in the inverter, excessive condensation and dew, and the inability to operate normally and reduce system losses, thereby greatly improving the reliability of the inverter operation.

[0158] Fig. 9 The schematic diagram of the layout of the integrated compressor inverter system is as follows: Fig. 9 As shown, the inverter and compressor are integrated into one unit. Fig.10 This is a schematic diagram of the structure of the top of the inverter. Fig.11 This is a schematic diagram of the structure of the inverter side. Fig.12 This is a schematic diagram of the structure of the compressor side. Fig.10 , Fig.11 and Fig.12As shown, the top of the inverter has an electric cooling radiator 100, a fan 101, a semi-controlled rectifier device 102, an inverter module 103, a system cooling channel 107, a cold motor and bearing channel branch 108, a cold inverter channel branch 109 and a radiator substrate 110; the side of the inverter has a compressor wiring cover 104, a compressor barrel 105, an air duct 106 and an electronic expansion valve 111, and the electronic expansion valve 111 is arranged on the cold motor and bearing channel branch 108; Fig.12 As shown, the electric cooling radiator 100 is located on the side of the compressor.

[0159] Figure 8 Figure 1 is a schematic diagram of the temperature control topology of the inverter system. Figure 8 As shown, the solution of the present invention provides a control system for controlling an integrated cooling system of a frequency converter and a compressor. The integrated system includes a main control unit, a temperature sampling module, an electric cooling radiator 100 and other control modules in the frequency converter system. The main circuit components inside the frequency converter are electrically connected by copper bars and busbars. The frequency converter is directly laid on the top and side of the compressor barrel 105. Figure 8 In the example shown, the compressor main control unit and the inverter main control unit can communicate via CAN (Controller Area Network, a serial communication protocol for real-time applications); after the AC power source is connected to the wiring terminals R, S, and T, it passes through the half-controlled rectifier circuit composed of the switch tube VT1, the switch tube VT3, the switch tube VT5, the diode VD4, the diode VD6, and the diode VD2, and then is filtered by the capacitor C1, and then inverted by the full-controlled inverter circuit to obtain AC power, which provides three-phase voltages U, V, and W to the three-phase winding of the motor M. The filter unit is connected in parallel with the half-controlled rectifier circuit, and the filter power supply provides DC+ and DC- power supply signals to the compressor main control unit and the inverter main control unit respectively after passing through the switch power supply. The inverter main control unit receives the humidity sampling signal, the temperature sampling signal of the radiator substrate 110, the temperature sampling signal of the environment, and the temperature sampling signal of the compressor barrel 105, and the inverter main control unit sends a trigger signal ug to the half-controlled rectifier circuit, and the inverter main control unit sends a PWM pulse signal to the full-controlled inverter circuit.

[0160] In the solution of the present invention, a cooling strip is provided on the back of the electric cooling radiator 100, and its bottom is directly bolted and fixed to the compressor barrel 105. The fan 101 is installed on the other side of the electric cooling radiator 100. The temperature of the wind sucked in from the back is consistent with the internal ambient temperature of the inverter. The wind first passes through the cooling strip on the back of the electric cooling radiator 100. On the one hand, the heat is transferred to the compressor barrel 105 by conduction. On the other hand, the electric cooling radiator 100 itself cools down the sucked hot air, and then forms cold air to blow into the inverter. After cooling the heating components inside the inverter, it finally reaches the side of the compressor wiring cover 104. The compressor wiring cover 104 and the compressor barrel 105 are formed as an integral casting; according to Fig.10 As can be seen from the schematic diagram of the system flow channel 107, the cold motor and bearing flow channel branch 108 is close to the compressor wiring cover 104, so the surface temperature of the compressor wiring cover 104 is relatively low. When the hot air generated by cooling the heating components inside the inverter reaches the side of the compressor wiring cover 104, the hot air is cooled down.

[0161] It can be seen that the internal ambient temperature of the inverter is reduced through electric refrigeration and conduction redundant refrigeration, the efficiency of cooling the internal temperature of the inverter is improved, and the refrigeration power of the electric refrigeration radiator 100 is flexibly adjusted, which greatly reduces the system power consumption, making the inverter and compressor control flexible and highly reliable.

[0162] Since the processing and functions implemented by the device of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned method, for the details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments, and no further elaboration will be made here.

[0163] According to an embodiment of the present invention, an integrated compressor corresponding to a control device of the integrated compressor is also provided. The integrated compressor may include: the control device of the integrated compressor described above.

[0164] Since the processing and functions implemented by the integrated compressor of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned device, for the details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0165] According to an embodiment of the present invention, a computer program product corresponding to an integrated compressor is also provided, comprising a computer program, which implements the steps of the integrated compressor control method described above when executed by a processor.

[0166] Since the processing and functions implemented by the product of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned integrated compressor, for the details not exhaustive in the description of this embodiment, please refer to the relevant descriptions in the aforementioned embodiments and will not be repeated here.

[0167] According to an embodiment of the present invention, a storage medium corresponding to a control method for an integrated compressor is also provided, wherein the storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the steps of the control method for the integrated compressor described above.

[0168] Since the processing and functions implemented by the storage medium of this embodiment basically correspond to the embodiments, principles and examples of the aforementioned method, for the details not fully described in this embodiment, please refer to the relevant descriptions in the aforementioned embodiments, and no further elaboration will be made here.

[0169] In summary, it is easy for those skilled in the art to understand that, under the premise of no conflict, the above-mentioned advantageous methods can be freely combined and superimposed.

[0170] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A control method for an integrated compressor, characterized in that: The integrated compressor comprises a compressor and a frequency converter, and also comprises a radiator substrate (110), an electric refrigeration device and a system cooling channel (107); the compressor comprises a compressor barrel (105), the electric refrigeration device comprises an electric refrigeration radiator (100), and the electric refrigeration radiator (100) is connected to the compressor barrel (105) to form a conduction refrigeration device; the radiator substrate (110) is used to dissipate heat from a power module in the frequency converter; a throttling device is provided on a cold motor and a bearing channel branch (108) in the system cooling channel (107); and a control method for the integrated compressor comprises: When the frequency converter is running, obtaining the temperature of the radiator substrate (110), obtaining the ambient temperature inside the frequency converter, and obtaining the temperature of the compressor barrel (105); Controlling the power of the electric refrigeration device according to the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter; The opening of the throttling device is controlled according to the temperature of the compressor cylinder (105).

2. The control method of the integrated compressor according to claim 1, characterized in that: Controlling the power of the electric refrigeration device according to the temperature of the radiator substrate (110) and the ambient temperature inside the inverter comprises: Determining whether the temperature of the heat sink substrate (110) and the ambient temperature inside the frequency converter are both less than a set first temperature threshold; If it is determined that the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter are both less than a set first temperature threshold, then determining whether the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter are both greater than a set second temperature threshold and less than a set third temperature threshold; If it is determined that the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter both meet the conditions of being greater than a set second temperature threshold and less than a set third temperature threshold, the power of the electric refrigeration device is controlled to operate at a set first power; wherein the set first power is a power within a set error range of the rated power of the electric refrigeration device; If it is determined that the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter do not simultaneously satisfy the conditions of being greater than a set second temperature threshold and less than a set third temperature threshold, the power of the electric refrigeration device is controlled to operate at a set second power; wherein the set second power is less than the set first power.

3. The control method of the integrated compressor according to claim 1 or 2, characterized in that: Controlling the power of the electric refrigeration device according to the temperature of the radiator substrate (110) and the ambient temperature inside the inverter, further comprising: Determining whether the temperature of the heat sink substrate (110) and the ambient temperature inside the frequency converter are both less than a set first temperature threshold; If it is determined that the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter do not simultaneously meet a set first temperature threshold value, the power of the electric refrigeration device is controlled to increase; wherein controlling the power of the electric refrigeration device to increase includes: increasing the power of the electric refrigeration device by increasing a set third power at preset time intervals; After a first set time, determining whether the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter both satisfy a first temperature threshold value that is greater than a set temperature threshold; If it is determined that the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter both meet a set first temperature threshold, then continue to control the power of the electric refrigeration device to increase; If it is determined that the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter do not simultaneously satisfy a first temperature threshold value that is greater than a set temperature threshold, then determine whether the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter simultaneously satisfy a second temperature threshold value that is greater than a set temperature threshold value and less than a third temperature threshold value that is set: if so, then control the power of the electric refrigeration device to operate at a set first power; otherwise, control the power of the electric refrigeration device to operate at a set second power; wherein the set first power is a power within a set error range of the rated power of the electric refrigeration device; and the set second power is less than the set first power.

4. The control method of the integrated compressor according to claim 3, characterized in that: Controlling the power of the electric refrigeration device according to the temperature of the radiator substrate (110) and the ambient temperature inside the inverter, further comprising: In the case where the power of the electric refrigeration device is continuously controlled to increase, after a second set time, determining whether the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter simultaneously meet and are still greater than a set second temperature threshold; If it is determined that the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter do not simultaneously satisfy the condition that they are still greater than a set second temperature threshold, then continue to control the power of the electric refrigeration device to increase; If it is determined that the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter are both greater than a set second temperature threshold, it is determined that the temperature distribution inside the inverter is uneven, the inverter is controlled to shut down, and a reminder message that the temperature inside the inverter is overheated is issued.

5. The control method of the integrated compressor according to claim 1, characterized in that: Controlling the opening of the throttling device according to the temperature of the compressor barrel (105) comprises: Determining whether the temperature of the compressor barrel (105) is less than a set fourth temperature threshold; If it is determined that the temperature of the compressor barrel (105) is lower than a set fourth temperature threshold, controlling the opening of the throttling device to decrease to a set first opening; If it is determined that the temperature of the compressor barrel (105) is greater than or equal to a set fourth temperature threshold, controlling the opening of the throttling device to increase to a set second opening; After controlling the opening of the throttling device to decrease to a set first opening, or after controlling the opening of the throttling device to increase to a set second opening, determining whether the temperature of the compressor barrel (105) satisfies a condition that the temperature is greater than a set fourth temperature threshold and less than a set fifth temperature threshold; If it is determined that the temperature of the compressor barrel (105) satisfies a fourth temperature threshold value that is greater than a set temperature threshold value and less than a fifth temperature threshold value that is set, then maintaining the current operation of the frequency converter; If it is determined that the temperature of the compressor barrel (105) does not meet the set fourth temperature threshold and is less than the set fifth temperature threshold, the process returns to continue controlling the opening of the throttling device to decrease to the set first opening.

6. The control method of the integrated compressor according to any one of claims 1 to 5, characterized in that: The electric refrigeration device further comprises a fan (101); wherein the power of the electric refrigeration device comprises: the power of at least one of the electric refrigeration radiator (100) and the fan (101) in the electric refrigeration device; The fan (101) is installed on the front side of the electric refrigeration radiator (100); a refrigeration strip is provided on the back side of the electric refrigeration radiator (100); and the bottom of the electric refrigeration radiator (100) is fixedly connected to the compressor barrel (105).

7. A control device for an integrated compressor, characterized in that: The integrated compressor comprises a compressor and a frequency converter, and also comprises a radiator substrate (110), an electric refrigeration device and a system cooling channel (107); the compressor comprises a compressor barrel (105), the electric refrigeration device comprises an electric refrigeration radiator (100), and the electric refrigeration radiator (100) is connected to the compressor barrel (105) to form a conduction refrigeration device; the radiator substrate (110) is used to dissipate heat from a power module in the frequency converter; a throttling device is provided on a cold motor and a bearing channel branch (108) in the system cooling channel (107); the control device of the integrated compressor comprises: an acquisition unit configured to acquire the temperature of the radiator substrate (110), acquire the ambient temperature inside the inverter, and acquire the temperature of the compressor barrel (105) when the inverter is running; A control unit configured to control the power of the electric refrigeration device according to the temperature of the heat sink substrate (110) and the ambient temperature inside the inverter; The control unit is also configured to control the opening of the throttling device according to the temperature of the compressor barrel (105).

8. An integrated compressor, characterized in that: include: The control device for the integrated compressor as claimed in claim 7.

9. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the control method of the integrated compressor according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the integrated compressor control method according to any one of claims 1 to 6 are implemented.

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