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

Abstract

The application discloses a control method and device of an integrated compressor, the integrated compressor, a storage medium and a computer program product, and relates to the technical field of compressors. The method comprises the following steps: connecting an electric refrigeration radiator with a compressor cylinder to form a conduction refrigeration device; acquiring the temperature of a radiator base plate, the ambient temperature inside a frequency converter, and the temperature of the compressor cylinder in the case that the frequency converter is running; controlling the power of the electric refrigeration device according to the temperature of the radiator base plate and the ambient temperature inside the frequency converter; and controlling the opening degree of a throttling device 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, redundancy temperature control of the integrated electric refrigeration and conduction refrigeration is adopted, the temperature distribution inside the frequency converter is balanced, and the reliability of the operation of the frequency converter is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of integrated compressors, and particularly relates to a control method and device for an integrated compressor, the integrated compressor, a storage medium, and a computer program product, and more particularly relates to a temperature control method and device for a frequency converter cavity of an integrated compressor, the integrated compressor, a storage medium, and a computer program product. BACKGROUND

[0002] In an integrated compressor, a frequency converter is an important part of a transmission system, is widely used, and has various types. In a complex environment such as a high-temperature and high-humidity or low-temperature central air conditioning system, an integrated magnetic suspension compressor integrates a compressor and a frequency converter, has a compact structure, a narrow space, and a high loss space density, and is prone to local high temperature, low temperature, and condensation.

[0003] In related solutions, a frequency converter applied to a central air conditioning transmission system is mostly set as an independent structural unit, has a large space, is internally provided with an evaporator or a cooling device, and reduces the internal temperature and humidity of the frequency converter through internal circulation. The uniformity of temperature distribution has an important influence on the reliability and stability of the system. However, the uniformity control of the internal temperature distribution of the frequency converter is difficult, and if the internal temperature distribution of the frequency converter is not uniform, internal devices of the frequency converter will fail or even be damaged, and the reliability of the operation of the frequency converter is affected.

[0004] The above content is only used to assist in understanding the technical solutions of the present application and does not represent the acknowledgement of the above content as prior art. SUMMARY

[0005] The present application aims to provide a control method and device for an integrated compressor, the integrated compressor, a storage medium, and a computer program product, to solve the problem that the uniformity control of the internal temperature distribution of a frequency converter is difficult, and if the internal temperature distribution of the frequency converter is not uniform, internal devices of the frequency converter will fail or even be damaged, and the reliability of the operation of the frequency converter is affected, to achieve the effect of improving the reliability of the operation of the frequency converter by connecting an electric refrigeration radiator in an electric refrigeration device and a compressor cylinder to form a conduction refrigeration device, adopting a redundant temperature control integrating electric refrigeration and conduction refrigeration, and making the internal temperature distribution of the frequency converter uniform.

[0006] The application provides a control method of an integrated compressor, the integrated compressor having a compressor and a frequency converter, and further having a radiator substrate, an electric refrigeration device and a system cooling flow channel; the compressor has a compressor cylinder, the electric refrigeration device has an electric refrigeration radiator, and the electric refrigeration radiator is connected with the compressor cylinder to form a conduction refrigeration device; the radiator substrate is used for dissipating heat of a power module in the frequency converter; a throttling device is arranged on a cold motor and bearing flow channel branch in the system cooling flow channel; the control method of the integrated compressor comprises the following steps: in the case that the frequency converter is running, the temperature of the radiator substrate is obtained, the ambient temperature inside the frequency converter is obtained, and the temperature of the compressor cylinder is obtained; the power of the electric refrigeration device is controlled according to the temperature of the radiator substrate and the ambient temperature inside the frequency converter; and the opening degree of the throttling device is controlled according to the temperature of the compressor cylinder.

[0007] In some embodiments, the power of the electric refrigeration device is controlled according to the temperature of the radiator substrate and the ambient temperature inside the frequency converter, which comprises the following steps: determining whether the temperature of the radiator substrate and the ambient temperature inside the frequency converter simultaneously satisfy a condition of being less than a set first temperature threshold value; if it is determined that the temperature of the radiator substrate and the ambient temperature inside the frequency converter simultaneously satisfy the condition of being less than the set first temperature threshold value, then determining whether the temperature of the radiator substrate and the ambient temperature inside the frequency converter simultaneously satisfy a condition of being greater than a set second temperature threshold value and less than a set third temperature threshold value; if it is determined that the temperature of the radiator substrate and the ambient temperature inside the frequency converter simultaneously satisfy the condition of being greater than the set second temperature threshold value and less than the set third temperature threshold value, then controlling the power of the electric refrigeration device to run at a set first power; wherein the set first power is a power within a set error range of a rated power of the electric refrigeration device; if it is determined that the temperature of the radiator substrate and the ambient temperature inside the frequency converter do not simultaneously satisfy the condition of being greater than the set second temperature threshold value and less than the set third temperature threshold value, then controlling the power of the electric refrigeration device to run 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 frequency converter, and the method further comprises: determining whether the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy a first temperature threshold value; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the frequency converter do not simultaneously satisfy the first temperature threshold value, the power of the electric refrigeration device is controlled to increase; wherein the power of the electric refrigeration device is controlled to increase comprises: increasing the power of the electric refrigeration device in a manner that the third set power is increased every preset time interval; after a first set time, it is determined whether the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy a first temperature threshold value; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy the first temperature threshold value, the power of the electric refrigeration device is controlled to continue to increase; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the frequency converter do not simultaneously satisfy the first temperature threshold value, it is determined whether the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy a second temperature threshold value and a third temperature threshold value; if yes, the power of the electric refrigeration device is controlled to operate at a first set power; otherwise, the power of the electric refrigeration device is controlled to operate at a second set power; wherein the first set power is a power within a set error range of a rated power of the electric refrigeration device, and the second set power is less than the first set power.

[0009] 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 frequency converter, and the method further comprises: after a second set time, it is determined whether the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy a second temperature threshold value, in a case that the power of the electric refrigeration device has been controlled to continue to increase; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the frequency converter do not simultaneously satisfy the second temperature threshold value, the power of the electric refrigeration device is controlled to continue to increase; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy the second temperature threshold value, it is determined that the temperature distribution inside the frequency converter is unbalanced, the frequency converter is controlled to shut down, and a prompt message of over-temperature inside the frequency converter is sent.

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

[0011] In some embodiments, the electric refrigeration device further has a fan; wherein the power of the electric refrigeration device includes the power of at least one of the electric refrigeration heat sink and the fan in the electric refrigeration device; the fan is installed on the front face of the electric refrigeration heat sink; a refrigeration strip is arranged on the back face of the electric refrigeration heat sink, and the bottom of the electric refrigeration heat sink is fixedly connected with the compressor cylinder.

[0012] In some embodiments, the electric refrigeration device further has a fan; wherein the power of the electric refrigeration device includes the power of at least one of the electric refrigeration heat sink and the fan in the electric refrigeration device; the fan is installed on the front face of the electric refrigeration heat sink; a refrigeration strip is arranged on the back face of the electric refrigeration heat sink, and the bottom of the electric refrigeration heat sink is fixedly connected with the compressor cylinder.

[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 frequency converter, including: determining whether the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy a first temperature threshold value; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy the first temperature threshold value, determining whether the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy a second temperature threshold value and a third temperature threshold value; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy the second temperature threshold value and the third temperature threshold value, controlling the power of the electric refrigeration device to operate at a first power; wherein the first power is a power within a set error range of a 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 frequency converter do not simultaneously satisfy the second temperature threshold value and the third temperature threshold value, controlling the power of the electric refrigeration device to operate at a second power; wherein the second power is less than the first power.

[0014] 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 frequency converter, including: determining whether the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy a first temperature threshold value; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy the first temperature threshold value, determining whether the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy a second temperature threshold value and a third temperature threshold value; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy the second temperature threshold value and the third temperature threshold value, controlling the power of the electric refrigeration device to operate at a first power; wherein the first power is a power within a set error range of a 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 frequency converter do not simultaneously satisfy the second temperature threshold value and the third temperature threshold value, controlling the power of the electric refrigeration device to operate at a second power; wherein the second power is less than the first power.

[0015] 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 frequency converter, and further comprises: in the case that the power of the electric refrigeration device has been continuously controlled to increase, after a second set time, determining whether the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy still being greater than a second set temperature threshold; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the frequency converter do not simultaneously satisfy still being greater than the second set temperature threshold, the power of the electric refrigeration device continues to be controlled to increase; if it is determined that the temperature of the heat sink substrate and the ambient temperature inside the frequency converter simultaneously satisfy still being greater than the second set temperature threshold, it is determined that the temperature distribution inside the frequency converter is unbalanced, the frequency converter is controlled to stop, and a prompt message of over-temperature inside the frequency converter is sent.

[0016] In some embodiments, the control unit controls the opening degree of the throttling device according to the temperature of the compressor cylinder, and comprises: determining whether the temperature of the compressor cylinder is less than a fourth set temperature threshold; if it is determined that the temperature of the compressor cylinder is less than the fourth set temperature threshold, the opening degree of the throttling device is controlled to decrease to a first set opening degree; if it is determined that the temperature of the compressor cylinder is greater than or equal to the fourth set temperature threshold, the opening degree of the throttling device is controlled to increase to a second set opening degree; after the opening degree of the throttling device is controlled to decrease to the first set opening degree, or after the opening degree of the throttling device is controlled to increase to the second set opening degree, it is determined whether the temperature of the compressor cylinder satisfies being greater than the fourth set temperature threshold and less than a fifth set temperature threshold; if it is determined that the temperature of the compressor cylinder satisfies being greater than the fourth set temperature threshold and less than the fifth set temperature threshold, the current operation of the frequency converter is maintained; if it is determined that the temperature of the compressor cylinder does not satisfy being greater than the fourth set temperature threshold and less than the fifth set temperature threshold, it is returned to continue to control the opening degree of the throttling device to decrease to the first set opening degree.

[0017] In some embodiments, the electric refrigeration device further has a fan; wherein the power of the electric refrigeration device comprises the power of at least one of the electric refrigeration heat sink and the fan in the electric refrigeration device; the fan is installed on the front face of the electric refrigeration heat sink; a refrigeration strip is arranged on the back face of the electric refrigeration heat sink, and the bottom of the electric refrigeration heat sink is fixedly connected with the compressor cylinder.

[0018] In order to match the above-mentioned device, the present application further provides an integrated compressor, which comprises the control device of the integrated compressor as described above.

[0019] According to the method, the application provides a storage medium including a stored program, wherein the program controls the device where the storage medium is located to execute the steps of the control method of the integrated compressor when the program is running.

[0020] According to the method, the application provides a computer program product including a computer program, which realizes the steps of the control method of the integrated compressor when the computer program is executed by a processor.

[0021] Therefore, the application provides the following technical scheme: for the compressor and the frequency converter in the integrated compressor, a heat sink substrate for dissipating heat of the rectifier module and the inverter module is arranged in the integrated compressor, and an electric refrigeration device composed of an electric refrigeration heat sink and a fan is arranged, and the electric refrigeration heat sink is connected with the compressor cylinder to form a conduction refrigeration device; an electronic expansion valve is arranged on the cold motor and bearing flow channel branch in the system cooling flow channel of the integrated compressor; when the frequency converter is running, the temperature of the heat sink substrate, the temperature of the internal environment of the frequency converter, and the temperature of the compressor cylinder are collected, the power of the electric refrigeration device is controlled according to the collected temperature of the heat sink substrate and the temperature of the internal environment of the frequency converter, and the opening degree of the electronic expansion valve is controlled according to the collected temperature of the compressor cylinder, so as to realize balanced control of the internal temperature of the frequency converter; thus, the electric refrigeration heat sink in the electric refrigeration device is connected with the compressor cylinder to form a conduction refrigeration device, the redundant temperature control of the integrated electric refrigeration and conduction refrigeration is adopted, the internal temperature distribution of the frequency converter is balanced, and the reliability of the frequency converter is improved.

[0022] Other features and advantages of the application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the application.

[0023] The technical scheme of the application will be further described in detail below with reference to the drawings and embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The flowchart of an embodiment of the control method of the integrated compressor of the application;

[0025] Figure 2 The flowchart of an embodiment of the first control process of the power of the electric refrigeration device in the method of the application;

[0026] 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 application;

[0027] Figure 4Flow chart for an embodiment of the third control process of the power of the electric refrigeration device in the method of the present application;

[0028] Figure 5 Flow chart for an embodiment of the control of the opening of the throttling device in the method of the present application;

[0029] Figure 6 Structural diagram of an embodiment of the control device of the integrated compressor of the present application;

[0030] Figure 7 Flow chart of the temperature sampling and control method of the frequency converter system;

[0031] Figure 8 Temperature control topology diagram of the frequency converter system;

[0032] Figure 9 Layout diagram of the integrated compressor frequency converter integrated system;

[0033] Figure 10 Structural diagram of the top of the frequency converter;

[0034] Figure 11 Structural diagram of the side of the frequency converter;

[0035] Figure 12 Structural diagram of the side of the compressor.

[0036] In combination with the drawings, the reference signs in the embodiments of the present application are as follows:

[0037] 100-electric refrigeration radiator; 101-fan; 102-semi-controlled rectifier; 103-inverter module; 104-compressor wiring cover; 105-compressor cylinder; 106-air duct; 107-system cooling flow channel; 108-cold motor and bearing flow channel branch; 109-cold frequency converter 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 scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with specific embodiments of the present application and corresponding drawings. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0039] It is considered that the balance control of the temperature distribution inside the frequency converter is difficult, and if the temperature or humidity inside the frequency converter is not appropriate (such as too high, too cold or too hot, etc.), the internal devices of the frequency converter will fail or even be damaged, and the reliability of the frequency converter operation is affected.

[0040] The temperature balance control strategy in the related scheme needs to set the evaporator and fan and other heat dissipation devices in the frequency converter cavity, but the structure of the frequency converter is compact and the space is small, and the integrated compressor requires small volume, so the application of the temperature balance control strategy in the related scheme is greatly limited, and the conventional internal circulation heat dissipation device cannot be set in the integrated compressor and frequency converter scheme to realize the temperature balance control in the frequency converter cavity.

[0041] Specifically, the temperature balance control strategy in the related scheme sets a small evaporator and a box body in the frequency converter cavity, and uses a fan to form an internal circulation heat dissipation to control the temperature of the internal environment of the frequency converter. However, the space inside the frequency converter cavity is limited, and the integrated compressor requires small volume, so the evaporator and the corresponding fan required in the related scheme cannot be designed inside the integrated compressor to realize the temperature balance control in the frequency converter cavity. It can be seen that the structure of the integrated compressor is compact and the space is small, and the internal circulation heat dissipation device in the related scheme cannot be set in the integrated compressor and frequency converter scheme to realize the temperature balance control in the frequency converter cavity.

[0042] Therefore, the scheme of the present application proposes a control method of an integrated compressor, specifically a temperature control method of a frequency converter cavity of an integrated compressor, which does not need to set a larger power heat dissipation device in the frequency converter cavity, but adopts a redundant temperature control scheme of electric refrigeration and conduction refrigeration, which can uniformly and efficiently cool the internal temperature of the frequency converter, and realizes the temperature balance control in the frequency converter cavity.

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

[0044] At step S110, when the frequency converter is running, the temperature of the radiator substrate 110 is acquired, the ambient temperature inside the frequency converter is acquired, and the temperature of the compressor cylinder 105 is acquired. Figure 7 The temperature sampling and control method of the frequency converter system is shown in the flowchart. Figure 7 As shown, the temperature sampling and control method of the frequency converter system comprises steps 1, 2 and 3. The frequency converter is running, and then the temperatures of the radiator substrate 110 and the environment (i.e. the environment inside the frequency converter cabinet) and the temperature of the compressor cylinder 105 are collected respectively. In the present application, the temperature sampling thermocouples are embedded in the radiator substrate 110, the surface of the compressor cylinder 105 and the environment in the frequency converter. After the frequency converter starts running, the temperature values are processed by the frequency converter main control unit in real time.

[0045] At step S120, according to the temperature of the radiator substrate 110 and the ambient temperature inside the frequency converter, the power of the electric refrigeration device is controlled to balance the temperature distribution inside the frequency converter.

[0046] At step S130, according to the temperature of the compressor cylinder 105, the opening of the throttling device is controlled to balance the temperature distribution inside the frequency converter.

[0047] In the present application, the electric refrigeration device in the frequency converter cavity is provided with a conduction refrigeration device, and a redundant temperature control scheme of electric refrigeration and conduction refrigeration is adopted to effectively control the ambient temperature in the frequency converter cavity. When the cavity temperature is high, the refrigeration device is flexibly controlled. This scheme can avoid the failure and damage of devices caused by high internal environment temperature or humidity, high cooling or high temperature, reduce the internal working environment temperature of the frequency converter and system loss, and enhance the operation reliability of the frequency converter. The problem of failure or damage of internal devices of the frequency converter caused by unsuitable internal temperature or humidity (such as too high, too cold or too hot) and the problem of imbalance of the temperature in the frequency converter cavity caused by the compact structure and small space of the integrated compressor are solved.

[0048] In some embodiments, the control of the power of the electric refrigeration device according to the temperature of the radiator substrate 110 and the ambient temperature inside the frequency converter in step S120 comprises a first control process of the power of the electric refrigeration device.

[0049] The following will be described in combination with Figure 2An embodiment flowchart of the first control process of the power of the electric refrigeration device in the method of the application is shown, further illustrating the specific process of the first control process of the power of the electric refrigeration device in step S120, comprising steps S210 to S240.

[0050] Step S210, determining whether the temperature of the heat sink substrate 110 and the temperature of the environment inside the frequency converter satisfy the condition of being less than a set first temperature threshold value at the same time; wherein the set first temperature threshold value is, for example, temperature Test1.

[0051] Step S220, if it is determined that the temperature of the heat sink substrate 110 and the temperature of the environment inside the frequency converter satisfy the condition of being less than the set first temperature threshold value at the same time, determining whether the temperature of the heat sink substrate 110 and the temperature of the environment inside the frequency converter satisfy the condition of being greater than a set second temperature threshold value and less than a set third temperature threshold value at the same time; wherein the set second temperature threshold value is, for example, temperature Test2, and the set third temperature threshold value is, for example, temperature Test3.

[0052] Step S230, if it is determined that the temperature of the heat sink substrate 110 and the temperature of the environment inside the frequency converter satisfy the condition of being greater than the set second temperature threshold value and less than the set third temperature threshold value at the same time, 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; the rated power is, for example, power P1, and the set error range is, for example, ±5%.

[0053] Step S240, if it is determined that the temperature of the heat sink substrate 110 and the temperature of the environment inside the frequency converter do not satisfy the condition of being greater than the set second temperature threshold value and less than the set third temperature threshold value at the same time, 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.

[0054] As shown, Figure 7 The temperature sampling and control method of the frequency converter system further comprises:

[0055] Step 2, starting real-time detection of the temperature of the heat sink substrate 110 and the environment by the temperature sensing bag, and then performing step 21.

[0056] Step 21, determining whether the temperature values of the heat sink substrate 110 and the environment (the most serious heat generation area of the frequency converter) collected are both less than temperature Test1: if yes, performing step 22, otherwise performing step 23. The temperature values of the heat sink substrate 110 and the environment (the most serious heat generation area of the frequency converter) are used for judgment at the same time, which can effectively control the environment temperature while ensuring that the heat sink meets the module heat dissipation.

[0057] Step 22, determine whether the temperature value of the heat sink substrate 110 and the environment (the most serious heat area of the frequency converter) is greater than temperature Test2 and less than temperature Test3: if yes, control the electric refrigeration device (such as the electric refrigeration heat sink 100) to operate at rated power PI ± 5%; otherwise, control the electric refrigeration device (such as the electric refrigeration heat sink 100) to operate at a smaller refrigeration power P2.

[0058] In the scheme of the present application, in the integrated structure of the integrated compressor frequency converter, by setting the conductive refrigeration device connected between the electric refrigeration fin (i.e. the electric refrigeration heat sink 100) and the compressor cylinder, the power of the electric refrigeration device is controlled according to the temperature of the heat sink substrate 110 and the temperature of the environment inside the frequency converter, so that when it is identified that the temperature or humidity inside the frequency converter is too high, the control system can flexibly adjust the refrigeration device to avoid the problem that the internal devices cannot operate normally due to too high temperature or humidity, too much condensation and dew.

[0059] In some embodiments, the power of the electric refrigeration device is controlled according to the temperature of the heat sink substrate 110 and the temperature of the environment inside the frequency converter in step S120, which further includes a second control process of the power of the electric refrigeration device.

[0060] The following will be described in combination with Figure 3 An embodiment flowchart of the second control process of the power of the electric refrigeration device in the method of the present application shown in FIG. 10, which further illustrates the specific process of the second control process of the power of the electric refrigeration device in step S120, including steps S310 to S350.

[0061] Step S310, determine whether the temperature of the heat sink substrate 110 and the temperature of the environment inside the frequency converter simultaneously satisfy the condition of being 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 heat sink substrate 110 and the temperature of the environment inside the frequency converter do not simultaneously satisfy the condition of being less than the set first temperature threshold, control the power of the electric refrigeration device to increase; wherein the control of the power of the electric refrigeration device to increase includes: increasing the power of the electric refrigeration device in the manner of increasing a set third power every preset time length; wherein the preset time length is, for example, s seconds, and the set third power is, for example, power P3.

[0063] Step S330, after the first set time, determine whether the temperature of the heat sink substrate 110 and the temperature of the environment inside the frequency converter simultaneously satisfy the condition of being greater than the 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 are both greater than the set first temperature threshold, then the power of the electric cooling device is controlled to increase.

[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 meet a set first temperature threshold, then it is determined whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter simultaneously meet a set second temperature threshold and a set third temperature threshold. If yes, then the power of the electric cooling device is controlled to operate at a set first power; otherwise, the power of the electric cooling device is controlled to operate at a set second power. The set first power is the power within the set error range of the rated power of the electric cooling device; the set second power is less than the set first power. The rated power is, for example, power P1, and the set error range is, for example, ±5%.

[0066] like Figure 7 As shown, the temperature sampling and control method for the frequency converter system also includes:

[0067] Step 23: Increase the cooling power and power supply of the electric refrigeration device (such as the electric refrigeration radiator 100), for example, by increasing the cooling power P3 every second, and then proceed to step 24. Here, cooling power refers to the cooling capacity of the refrigeration device, and power supply is the power supplied to the refrigeration device by the power source; for example, if the mains power supplies 5kW to the air conditioner, 5kW is the power supply; while the air conditioner's cooling power is 3kW, 3kW is the cooling power.

[0068] Step 24: After time t1, the inverter main control system checks the temperature values ​​of the radiator base plate 110 and the environment (the area where the inverter is most severely overheated) again, and determines whether the temperature values ​​of the radiator base plate 110 and the environment (the area where the inverter is most severely overheated) are both greater than temperature Test1: If yes, proceed to step 25; otherwise, return to proceed to step 22.

[0069] Step 25: Continuously increase the power of the electric cooling device (such as the electric cooling radiator 100), and then proceed to step 26.

[0070] In the present invention, the power of the electric cooling device is further controlled according to the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter, which prevents the failure and damage of electrical components caused by excessively high temperature or humidity or excessive condensation inside the inverter, thus reducing system losses and greatly improving the reliability of inverter operation.

[0071] In the related scheme, only the electric refrigeration cooling is generally involved, and no other auxiliary cooling method is involved. For the electric refrigeration device (such as an electric refrigeration sheet) and the compressor cylinder, the power of the electric refrigeration sheet is limited, and the cooling effect of the electric refrigeration device is small only by relying on the electric refrigeration device. In the scheme of the present application, the electric refrigeration sheet and the compressor cylinder are connected to the conduction refrigeration device, the electric refrigeration device is connected and fixed with the compressor cylinder, for example, the bottom of the electric refrigeration sheet is connected and fixed with the mounting hole provided on the compressor cylinder by using a bolt, and the cooling effect of the electric refrigeration device can be further improved by the conduction cooling method.

[0072] In some embodiments, the third control process of the power of the electric refrigeration device in the method of the present application is further included in the step S120 of controlling the power of the electric refrigeration device according to the temperature of the radiator substrate 110 and the environmental temperature inside the frequency converter.

[0073] The third control process of the power of the electric refrigeration device in the method of the present application will be further described below with reference to the flowchart of an embodiment of the third control process of the power of the electric refrigeration device in the method of the present application shown in Figure 4 The third control process of the power of the electric refrigeration device in the method of the present application will be further described below with reference to the flowchart of an embodiment of the third control process of the power of the electric refrigeration device in the method of the present application shown in

[0074] In step S410, after the second set time, it is determined whether the temperature of the radiator substrate 110 and the environmental temperature inside the frequency converter still satisfy the condition of being greater than the second set temperature threshold value at the same time in the case that the power of the electric refrigeration device has been continuously controlled to increase.

[0075] In step S420, if it is determined that the temperature of the radiator substrate 110 and the environmental temperature inside the frequency converter do not satisfy the condition of being greater than the second set temperature threshold value at the same time, the power of the electric refrigeration device is continuously controlled to increase.

[0076] In step S430, if it is determined that the temperature of the radiator substrate 110 and the environmental temperature inside the frequency converter satisfy the condition of being greater than the second set temperature threshold value at the same time, it is determined that the temperature distribution inside the frequency converter is unbalanced, the frequency converter is controlled to stop, and a temperature over-temperature warning message of the frequency converter is sent out.

[0077] As shown in Figure 7 The temperature sampling and control method of the frequency converter system further includes:

[0078] In step 26, after the time t2, if the temperature values of the radiator substrate 110 and the environment (the most serious heating area of the frequency converter) are still greater than the temperature Test2, the control system sends out an over-temperature warning, and the current control is ended.

[0079] In steps 21 to 26, when the temperature values ​​of the radiator substrate 110 and the environment (the area where the inverter heats up most severely) collected N times (N≥3) are all lower than temperature Test1 and higher than temperature Test2 but lower than temperature Test3, the electric cooling radiator 100 will be controlled by the inverter main control unit to adjust the output cooling power to P1±5%; if the collected temperature values ​​of the radiator substrate 110 and the environment (the area where the inverter heats up most severely) are lower than Test1 but not higher 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 where the inverter heats up most severely) 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 second (s is a certain time, in seconds). After time t1, the inverter main control unit checks the temperature values ​​of the radiator substrate 110 and the internal environment of the inverter again. If the temperature value is still greater than Test1, the electric cooling radiator 100 continues to increase the direct rated value according to the above-mentioned cooling power acceleration. After time t2, the temperature values ​​of the substrate 110 and the environment are checked again. If they are still greater than Test1, the inverter control system will issue an over-temperature warning and transmit the information to the compressor main control unit via CAN communication to stop the operation.

[0081] Where 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. Where P is the cooling power of the electric refrigeration device, and Test1 ≤ Test2 ≤ Test3 ≤ Test4 ≤ Test5.

[0082] The inverter's main control unit obtains temperature values ​​by sampling through a temperature sensor, and then flexibly controls the cooling power of the electric cooling radiator to ensure that condensation does not occur inside the inverter due to overheating or overcooling.

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

[0084] The following is combined Figure 5 The flowchart shown is a schematic diagram of an embodiment of the method of the present invention for controlling the opening degree of the throttling device. It further illustrates the specific process of controlling the opening degree of the throttling device in step S130, including steps S510 to S560.

[0085] Step S510: Determine whether the temperature of the compressor cylinder 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 cylinder 105 is less than the set fourth temperature threshold, then the opening degree of the throttling device is controlled to be reduced to the set first opening degree; wherein, the set first opening degree is the opening degree corresponding to step bit1.

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

[0088] Step S540: 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, determine whether the temperature of the compressor cylinder 105 meets the requirement of being greater than a set fourth temperature threshold and less than a set fifth temperature threshold; wherein, the set fifth temperature threshold is, for example, temperature Test5.

[0089] Step S550: If it is determined that the temperature of the compressor cylinder 105 is greater than the set fourth temperature threshold and less than the set fifth temperature threshold, then the current operation of the frequency converter is maintained.

[0090] Step S560: If it is determined that the temperature of the compressor cylinder 105 does not meet the requirement of being greater than the set fourth temperature threshold and less than the set fifth temperature threshold, then 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 for the frequency converter system also includes:

[0092] Step 3: While performing Step 2, start real-time monitoring of the temperature of the compressor cylinder 105 using a temperature sensor, and then proceed to Step 31.

[0093] Step 31: At the same time as the inverter starts running, the inverter main control unit will also detect the temperature of the compressor barrel 105 in real time. The temperature of the compressor barrel 105 is sampled in the same sampling method as above, and it is determined whether the temperature of the compressor barrel 105 is lower than the temperature Test4. If yes, proceed to step 32; otherwise, proceed to step 33.

[0094] Step 32: When the temperature of the compressor cylinder 105 is less than the temperature Test4, the electronic expansion valve 111 located on the motor and bearing flow channel branch 108 at the inlet of the system cooling flow channel 107 is controlled by the inverter main control unit to gradually reduce the opening step number to bit1, and then step 34 is executed.

[0095] Step 33: When the temperature value of the compressor barrel 105 is greater than or equal to 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 temperature Test4 and less than temperature Test5. Here, bit1 and bit2 are certain step thresholds for the opening degree, such as the opening degree step number being within the range of 0 to 480 degrees.

[0096] Step 34: Determine whether the temperature value of the compressor cylinder 105 is greater than temperature Test4 and less than temperature Test5. If yes, end the current control; otherwise, return to step 32 until the detected temperature value of the compressor cylinder 105 is greater than temperature Test4 and less than temperature Test5.

[0097] This flexible temperature control method for the cylinder 105 ensures that the cooling requirements of the motor and bearings are met, while also greatly reducing the risk of condensation and excessive humidity inside the inverter and compressor due to low cylinder 105 temperature, which could lead to failure or damage to the internal electrical components or circuits of the inverter. This further improves the operational reliability of the integrated compressor inverter.

[0098] In some embodiments, the electric cooling device further includes a fan 101; wherein the power of the electric cooling device includes the power of at least one of the electric cooling radiator 100 and the fan 101; the fan 101 is mounted on the front of the electric cooling radiator 100; a cooling strip is provided on the back of the electric cooling radiator 100, and the bottom of the electric cooling radiator 100 is fixedly connected to the compressor cylinder 105 (e.g., by bolts). The front and back of the electric cooling radiator 100 are opposite sides; when one side of the electric cooling radiator 100 is the front, the other side is the back.

[0099] In the scheme of the present application, by built-in electric refrigeration radiator 100 and fan 101, on the one hand, the electric refrigeration radiator 100 is directly connected with the compressor cylinder 105, which solves the problem of difficult heat dissipation due to space limitation and high loss, so that the internal heat dissipation of the frequency converter adopts the high-efficiency heat dissipation effect of electric refrigeration and conduction refrigeration. On the other hand, the redundancy temperature control scheme of electric refrigeration and conduction refrigeration is adopted, which prevents the problems of high temperature or humidity in the internal working environment of the frequency converter, condensation dew, electrical device failure and damage, unable to operate normally and reduce system loss, etc., greatly improving the reliability of the frequency converter operation.

[0100] Figure 9 The layout diagram of the integrated compressor frequency converter integrated system is shown in Figure 9 The frequency converter and the compressor are integrated and arranged. Figure 10 The structure diagram of the top of the frequency converter is shown in Figure 11 The structure diagram of the side of the frequency converter is shown in Figure 12 The structure diagram of the side of the compressor is shown in Figure 10 , Figure 11 and Figure 12 The top of the frequency converter has an electric refrigeration radiator 100, a fan 101, a half-controlled rectifier device 102, an inverter module 103, a system cooling flow channel 107, a cold motor and bearing flow channel branch 108, a cold frequency converter flow channel branch 109 and a radiator substrate 110; the side of the frequency converter has a compressor wiring cover 104, a compressor cylinder 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 flow channel branch 108; as shown in Figure 12 The electric refrigeration radiator 100 is located on the side of the compressor.

[0101] Figure 8 The temperature control topology diagram of the frequency converter system is shown in Figure 8 As shown in Figure 8In the shown example, the compressor main control unit 130 and the frequency converter main control unit 130 can communicate via CAN (Controller Area Network, a serial communication protocol for real-time applications); after the AC power supply self-connection terminals R, S, T are connected, the AC power supply passes through the half-controlled rectifier circuit composed of the switching tube VT1, the switching tube VT3, the switching tube VT5, the diode VD4, the diode VD6, and the diode VD2, is filtered by the capacitor C1, and is then inverted by the fully-controlled inverter circuit to obtain AC power, which provides three-phase voltage 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 filtered power supply provides DC+ and DC- power supply signals for the compressor main control unit and the frequency converter main control unit after passing through the switching power supply. The frequency converter main control unit receives the humidity sampling signal, the temperature sampling signal of the radiator base plate 110, the temperature sampling signal of the environment, and the temperature sampling signal of the compressor cylinder 105, sends the trigger signal ug to the half-controlled rectifier circuit, and sends the PWM pulse signal to the fully-controlled inverter circuit.

[0102] In the scheme of the present application, the electric refrigeration radiator 100 is provided with refrigeration strips on the back, and the bottom of the electric refrigeration radiator 100 is directly bolted and fixed to the compressor cylinder 105. The fan 101 is installed on the other side of the electric refrigeration radiator 100, and the temperature of the wind sucked from the back is consistent with the internal environment temperature of the frequency converter. The wind first passes through the refrigeration strips on the back of the electric refrigeration radiator 100, and the heat is transferred to the compressor cylinder 105 by conduction, and is cooled down by the refrigeration characteristics of the electric refrigeration radiator 100, and then the cold wind is formed to blow to the internal heating devices of the frequency converter, and finally reaches the side of the compressor wiring cover 104. The compressor wiring cover 104 is formed by integral casting with the compressor cylinder 105. According to the system flow channel 107 in the figure, the cold motor and bearing flow channel branch 108 are close to the compressor wiring cover 104, so the surface temperature of the compressor wiring cover 104 is low. When the hot wind formed after the internal heating devices of the frequency converter are cooled down reaches the side of the compressor wiring cover 104, the hot wind is cooled down. Figure 10

[0103] Therefore, by using the electric refrigeration and conduction redundant refrigeration mode, the internal environment temperature of the frequency converter is reduced, the efficiency of cooling the internal temperature of the frequency converter is improved, the refrigeration power of the electric refrigeration radiator 100 is flexibly adjusted, the system power consumption is greatly reduced, the frequency converter and the compressor control are flexible, and the reliability is high.

[0104] ​The technical scheme of the embodiment is adopted, the condenser and the frequency converter in the integrated compressor are targeted, the heat sink substrate for heat dissipation of the rectifier module and the inverter module is arranged in the integrated compressor, the electric refrigeration device composed of the electric refrigeration heat sink and the fan is arranged, the electric refrigeration heat sink is connected with the compressor cylinder to form the conduction refrigeration device, the electronic expansion valve is arranged on the cold motor and bearing flow channel branch in the system cooling flow channel of the integrated compressor, the temperature of the heat sink substrate, the temperature of the internal environment of the frequency converter and the temperature of the compressor cylinder are collected in the case that the frequency converter operates, the power of the electric refrigeration device is controlled according to the collected temperature of the heat sink substrate and the temperature of the internal environment of the frequency converter, the opening of the electronic expansion valve is controlled according to the collected temperature of the compressor cylinder, so as to realize the balanced control of the internal temperature of the frequency converter, the electric refrigeration heat sink in the electric refrigeration device is connected with the compressor cylinder to form the conduction refrigeration device, the redundant temperature control of the integrated electric refrigeration and conduction refrigeration is adopted, the internal temperature distribution of the frequency converter is balanced, and the reliability of the operation of the frequency converter is improved.

[0105] According to the embodiment of the application, a control device of an integrated compressor corresponding to the control method of the integrated compressor is also provided. Figure 6 The integrated compressor has a compressor and a frequency converter, and also has a heat sink substrate 110, an electric refrigeration device and a system cooling flow channel 107; the compressor has a compressor cylinder 105, the electric refrigeration device has an electric refrigeration heat sink 100, the electric refrigeration heat sink 100 is connected with the compressor cylinder 105 to form a conduction refrigeration device; the heat sink substrate 110 is arranged on the top of the frequency converter and is used for heat dissipation of the power module such as the rectifier module and the inverter module 103 in the frequency converter, the rectifier module is such as a half-controlled rectifier device 102; the throttling device (such as an electronic expansion valve 11) is arranged on the cold motor and bearing flow channel branch 108 in the system cooling flow channel 107; in the scheme of the application, as shown in the figure, Figure 6 The control device of the integrated compressor comprises an acquisition unit 120 and a control unit 130.

[0106] The acquisition unit 120 is configured to acquire the temperature of the heat sink substrate 110, acquire the temperature of the internal environment of the frequency converter and acquire the temperature of the compressor cylinder 105 in the case that the frequency converter operates. The specific functions and processing of the acquisition unit 120 are described in step S110. Figure 7 The flow chart of the temperature sampling and control method of the frequency converter system is shown in the figure, Figure 7As shown, the temperature sampling and control method of the frequency converter system comprises: step 1, the frequency converter runs, and then steps 2 and 3 are executed respectively to collect the temperature of the radiator substrate 110 and the environment (i.e. the environment in the cabinet of the frequency converter cabinet) and the temperature of the compressor cylinder 105. In the scheme of the present application, the temperature sampling thermowell is embedded in the radiator substrate 110, the surface of the compressor cylinder 105 and the environment in the frequency converter, and the temperature value is processed in real time by the frequency converter main control unit after the frequency converter starts running.

[0107] The control unit 130 is configured to control the power of the electric refrigeration device according to the temperature of the radiator substrate 110 and the temperature of the environment in the frequency converter, so as to balance the temperature distribution in the frequency converter. The specific functions and processes of the control unit 130 are described with reference to step S120.

[0108] The control unit 130 is further configured to control the opening degree of the throttling device according to the temperature of the compressor cylinder 105, so as to balance the temperature distribution in the frequency converter. The specific functions and processes of the control unit 130 are described with reference to step S130.

[0109] The scheme of the present application sets a conduction refrigeration device based on the electric refrigeration device in the cavity of the frequency converter, and further adopts a redundant temperature control scheme integrating electric refrigeration and conduction refrigeration to effectively control the temperature of the environment in the cavity of the frequency converter, and flexibly controls the refrigeration device when the temperature in the cavity is high. This scheme can avoid the failure and damage of devices caused by the excessively high or low temperature or humidity in the internal environment, reduce the internal working environment temperature and system loss of the frequency converter, and enhance the operation reliability of the frequency converter. The problems of the failure and damage of devices in the frequency converter caused by the unsuitable temperature or humidity (such as excessively high, low or high temperature) in the internal environment of the frequency converter, and the influence of the operation reliability of the frequency converter are solved. The problem of the compact structure and narrow space of the integrated compressor frequency converter, which cannot set a conventional internal circulation radiator to achieve the balanced control of the temperature in the cavity of the frequency converter, is also solved.

[0110] In some embodiments, the control unit 130 controls the power of the electric refrigeration device according to the temperature of the radiator substrate 110 and the temperature of the environment in the frequency converter, which comprises a first control process of the power of the electric refrigeration device, and the specific process is as follows:

[0111] The control unit 130 is further configured to determine whether the temperature of the radiator substrate 110 and the temperature of the environment in the frequency converter simultaneously satisfy the set first temperature threshold. The specific functions and processes of the control unit 130 are described with reference to step S210. The set first temperature threshold is, for example, temperature Test1.

[0112] The control unit 130 is further configured to, if it is determined that the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both below a set first temperature threshold, then determine whether the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are both above a set second temperature threshold and below a set third temperature threshold. The specific function and processing of this control unit 130 are further described in step S220. The set second temperature threshold is, for example, temperature Test2, and the set third temperature threshold is, for example, temperature Test3.

[0113] The control unit 130 is further configured to, if it is determined that the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter simultaneously meet the conditions of being greater than a set second temperature threshold and less than a set third temperature threshold, then control the power of the electric cooling device to operate at a set first power; wherein the set first power is the power within the set error range of the rated power of the electric cooling device. The specific functions and processing of the control unit 130 are further described in step S230. Rated power is, for example, power P1, and the set error range is, for example, ±5%.

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

[0115] like Figure 7 As shown, the temperature sampling and control method for the frequency converter system also includes:

[0116] Step 2: Start real-time monitoring of the temperature of the heat sink substrate 110 and the environment using a temperature sensor, and then proceed to step 21.

[0117] Step 21: Determine whether the collected temperature values ​​of the radiator substrate 110 and the environment (the area where the inverter heats up the most) are both lower than temperature Test1: If yes, proceed to step 22; otherwise, proceed to 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) are greater than temperature Test2 and less than temperature Test3. If yes, control the electric cooling device (such as the electric cooling radiator 100) to operate at rated power P1 ± 5%; otherwise, control the electric cooling device (such as the electric cooling radiator 100) to operate with a smaller cooling power P2.

[0119] In the scheme of the present application, in the integrated structure of the integrated compressor frequency converter, by setting the conduction refrigeration device connected between the electric refrigeration sheet and the compressor cylinder, the power of the electric refrigeration device is controlled according to the temperature of the radiator substrate 110 and the environmental temperature inside the frequency converter, so that when it is identified that the environmental temperature or humidity inside the frequency converter is too high, the control system can flexibly adjust the refrigeration device to avoid the problem that the internal devices cannot normally operate due to too high temperature or humidity and excessive condensation dew.

[0120] In some embodiments, the control unit 130 controls the power of the electric refrigeration device according to the temperature of the radiator substrate 110 and the environmental temperature inside the frequency converter, and further comprises a second control process of the power of the electric refrigeration device, specifically as follows:

[0121] The control unit 130 is specifically further configured to determine whether the temperature of the radiator substrate 110 and the environmental temperature inside the frequency converter simultaneously satisfy being less than a set first temperature threshold. The specific functions and processes of the control unit 130 are also referred to step S310. Wherein, the set first temperature threshold is like temperature Test1.

[0122] The control unit 130 is specifically 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 environmental temperature inside the frequency converter do not simultaneously satisfy being less than the set first temperature threshold; wherein, the control of the power of the electric refrigeration device to increase includes: increasing the power of the electric refrigeration device in the manner of increasing the set third power every preset time length. The specific functions and processes of the control unit 130 are also referred to step S320. Wherein, the preset time length is like s seconds, and the set third power is like power P3.

[0123] The control unit 130 is specifically further configured to determine whether the temperature of the radiator substrate 110 and the environmental temperature inside the frequency converter simultaneously satisfy being greater than the set first temperature threshold after the first set time. The specific functions and processes of the control unit 130 are also referred to step S330.

[0124] The control unit 130 is specifically further configured to continue 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 environmental temperature inside the frequency converter simultaneously satisfy being greater than the set first temperature threshold. The specific functions and processes of the control unit 130 are also referred to step S340.

[0125] The control unit 130 is further configured to determine whether the temperature of the radiator substrate 110 and the ambient temperature inside the frequency converter simultaneously satisfy a condition of being greater than a second temperature threshold and less than a third temperature threshold, if the temperature of the radiator substrate 110 and the ambient temperature inside the frequency converter do not simultaneously satisfy a condition of being greater than a first temperature threshold; control the power of the electric refrigeration device to operate at a first power if the temperature of the radiator substrate 110 and the ambient temperature inside the frequency converter simultaneously satisfy the condition of being greater than the second temperature threshold and less than the third temperature threshold; and control the power of the electric refrigeration device to operate at a second power if the temperature of the radiator substrate 110 and the ambient temperature inside the frequency converter do not simultaneously satisfy the condition of being greater than the second temperature threshold and less than the third temperature threshold; wherein the first power is a power within a set error range of a rated power of the electric refrigeration device; and the second power is less than the first power. The specific functions and processes of the control unit 130 are also described in step S350. The rated power is P1, and the set error range is ±5%.

[0126] As shown in Figure 7 The temperature sampling and control method of the frequency converter system further includes the following steps.

[0127] In step 23, the refrigeration power and the power supply power of the electric refrigeration device (such as the electric refrigeration radiator 100) are increased, for example, by increasing the refrigeration power P3 every s seconds, and then step 24 is performed.

[0128] In step 24, after a time t1, the frequency converter main control system detects the temperature values of the radiator substrate 110 and the environment (the most serious heating area of the frequency converter) again, and determines whether the temperature values of the radiator substrate 110 and the environment (the most serious heating area of the frequency converter) are both greater than the temperature Test1: if yes, step 25 is performed, otherwise, step 22 is returned to be performed.

[0129] In step 25, the power of the electric refrigeration device (such as the electric refrigeration radiator 100) is continuously increased, and then step 26 is performed.

[0130] In the scheme of the present application, 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 frequency converter, which prevents the problems of over-high temperature or over-condensation of the working environment inside the frequency converter, failure and damage of electrical devices, inability to operate normally, and reduction of system loss, and greatly improves the reliability of the operation of the frequency converter.

[0131] In related schemes, only electric refrigeration cooling is generally involved, and other auxiliary cooling methods are not involved. For the electric refrigeration device (such as an electric refrigeration sheet) and the compressor cylinder, the power of the electric refrigeration sheet is limited, and the cooling effect of the electric refrigeration device is small. In the scheme of the present application, the electric refrigeration sheet and the compressor cylinder are connected and fixed by a conduction refrigeration device, for example, the bottom of the electric refrigeration sheet and the mounting hole provided on the compressor cylinder are connected and fixed by bolts, so that the cooling effect of the electric refrigeration device is further improved by conduction cooling.

[0132] In some embodiments, the control unit 130 controls the power of the electric cooling device based on the temperature of the heat sink substrate 110 and the ambient temperature inside the frequency converter, and further includes a third control process for the power of the electric cooling device, as follows:

[0133] The control unit 130 is further configured to, after a second set time period, determine whether the temperature of the heat sink substrate 110 and the ambient temperature inside the frequency converter simultaneously meet the condition of still being greater than a set second temperature threshold, while the power of the electric cooling device has been continuously increased. The specific functions and processing of the control unit 130 are further described in step S410.

[0134] The control unit 130 is further configured to continue controlling the power increase of the electric cooling device if it is determined that the temperature of the heat sink substrate 110 and the ambient temperature inside the frequency converter do not simultaneously meet the requirement of still being greater than a set second temperature threshold. The specific functions and processing of the control unit 130 are further described in step S420.

[0135] The control unit 130 is further configured to determine that the internal temperature distribution of the inverter is uneven if both the temperature of the heat sink substrate 110 and the ambient temperature inside the inverter are still greater than a set second temperature threshold, control the inverter to shut down, and issue an over-temperature warning message. The specific functions and processing of this control unit 130 are further described in step S430.

[0136] like Figure 7 As shown, the temperature sampling and control method for the frequency converter system also includes:

[0137] Step 26: After time t2, if the temperature values ​​of the radiator base plate 110 and the environment (the area where the inverter heats up the most) are still greater than temperature Test2, the control system will issue an over-temperature warning and end the current control.

[0138] In steps 21 to 26, when the temperature values ​​of the radiator substrate 110 and the environment (the area where the inverter heats up most severely) collected N times (N≥3) are all lower than temperature Test1 and higher than temperature Test2 but lower than temperature Test3, the electric cooling radiator 100 will be controlled by the inverter main control unit to adjust the output cooling power to P1±5%; if the collected temperature values ​​of the radiator substrate 110 and the environment (the area where the inverter heats up most severely) are lower than Test1 but not higher 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 heat sink substrate 110 and the environment (the most serious heat generation area of the frequency converter) collected N times (N≥3) are greater than Test1, the frequency converter master control unit increases the operating refrigeration power of the electric refrigeration heat sink 100 by a refrigeration power P3 per s (s is a certain time, in seconds), and after a time t1, the frequency converter master control unit detects the temperature values of the heat sink substrate 110 and the internal environment of the frequency converter again. If the temperature values are still greater than Test1, the electric refrigeration heat sink 100 continues to increase the direct rated value at the above refrigeration power acceleration, and after a time t2, the temperature values of the substrate 110 and the environment are continuously detected. If they are still greater than Test1, the frequency converter control system will issue an over-temperature warning and transmit information to the compressor master control unit through CAN communication to stop running.

[0140] wherein Test1, Test2, Test3, Test4, and Test5 are certain temperature thresholds, P, P1, P2, and P3 are certain refrigeration power thresholds, and t1 and t2 are certain time thresholds.

[0141] The frequency converter master control unit acquires temperature values through temperature sensing bag sampling, and then flexibly controls the refrigeration power of the electric refrigeration heat sink to ensure that the internal environment of the frequency converter will not cause the generation of condensed water due to overcooling and overheating.

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

[0143] The control unit 130 is specifically further configured to determine whether the temperature of the compressor cylinder 105 is less than a set fourth temperature threshold. The specific functions and processes of the control unit 130 also refer to step S510. The set fourth temperature threshold is, for example, a temperature Test4.

[0144] The control unit 130 is specifically further configured to control the opening degree of the throttling device to decrease to a set first opening degree if it is determined that the temperature of the compressor cylinder 105 is less than the set fourth temperature threshold. The specific functions and processes of the control unit 130 also refer to step S520. The set first opening degree is, for example, the opening degree corresponding to a step number bit1.

[0145] The control unit 130 is specifically further configured to control the opening degree of the throttling device to increase to a set second opening degree if it is determined that the temperature of the compressor cylinder 105 is greater than or equal to the set fourth temperature threshold. The specific functions and processes of the control unit 130 also refer to step S530. The set second opening degree is, for example, the opening degree corresponding to a step number bit2.

[0146] The control unit 130 is further configured to determine whether the temperature of the compressor cylinder 105 is greater than a fourth temperature threshold and less than a fifth temperature threshold after controlling the opening degree of the throttling device to decrease to the first set opening degree or after controlling the opening degree of the throttling device to increase to the second set opening degree. The specific functions and processes of the control unit 130 are also described in step S540. The fifth temperature threshold is Test5.

[0147] The control unit 130 is further configured to maintain the current operation of the frequency converter if it is determined that the temperature of the compressor cylinder 105 is greater than the fourth temperature threshold and less than the fifth temperature threshold. The specific functions and processes of the control unit 130 are also described in step S550.

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

[0149] As shown in Figure 7 The temperature sampling and control method of the frequency converter system further comprises:

[0150] Step 3: While step 2 is being performed, the temperature of the compressor cylinder 105 is detected in real time by the temperature sensing bag, and then step 31 is performed.

[0151] Step 31: While the frequency converter is starting to operate, the frequency converter main control unit also detects the temperature of the compressor cylinder 105 in real time. The temperature of the compressor cylinder 105 is sampled in the same way as described above, and it is determined whether the temperature of the compressor cylinder 105 is less than Test4. If yes, step 32 is performed, otherwise step 33 is performed.

[0152] Step 32: When the temperature of the compressor cylinder 105 is less than Test4, the electronic expansion valve 111 on the motor and bearing flow branch 108 at the inlet of the system cooling flow channel 107 is controlled to gradually decrease the opening degree to bit1 by the frequency converter main control unit, and then step 34 is performed.

[0153] Step 33: When the temperature of the compressor cylinder 105 is greater than or equal to Test4, the step number of the electronic expansion valve 111 is gradually increased to bit2, and then step 34 is performed until the detected temperature of the compressor cylinder 105 is greater than Test4 and less than Test5. Bit1 and bit2 are certain step threshold values of the opening degree.

[0154] Step 34, judging whether the temperature value of the compressor cylinder 105 is greater than temperature Test4 and less than temperature Test5: if yes, ending the current control, otherwise returning to step 32 until the detected temperature value of the compressor cylinder 105 is greater than temperature Test4 and less than temperature Test5.

[0155] Through the flexible control method of the cylinder 105 temperature, on the one hand, the cooling demand of the motor and the bearing is ensured to be met, and on the other hand, the condensation, high humidity and the like caused by the too low temperature of the cylinder 105 are greatly reduced, the internal charged devices or circuits of the frequency converter are prevented from being damaged due to the too low temperature of the cylinder 105, and the operation reliability of the integrated compressor frequency converter is further improved.

[0156] 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 surface of the electric refrigeration radiator 100; a refrigeration strip is arranged on the back surface of the electric refrigeration radiator 100, and the bottom of the electric refrigeration radiator 100 is fixedly connected (such as fixedly connected by bolts) with the compressor cylinder 105.

[0157] In the scheme of the present application, by being provided with the electric refrigeration radiator 100 and the fan 101, on the one hand, the electric refrigeration radiator 100 is directly connected with the compressor cylinder 105, the problems of difficult heat dissipation and high loss caused by space limitation are solved, the internal heat dissipation of the frequency converter adopts the high-efficiency heat dissipation effect of electric refrigeration and conduction refrigeration. On the other hand, the redundant temperature control scheme of electric refrigeration and conduction refrigeration is adopted, the problems of high temperature or high humidity in the working environment of the frequency converter, condensation caused by too low temperature, failure and damage of electrical devices, inability to normally operate and reduction of system loss and the like are prevented, and the operation reliability of the frequency converter is greatly improved.

[0158] Figure 9 The layout schematic diagram of the integrated compressor frequency converter integrated system is shown in FIG. 1. Figure 9 The frequency converter and the compressor are integrated and arranged. Figure 10 The structure schematic diagram of the top of the frequency converter is shown in FIG. 2. Figure 11 The structure schematic diagram of the side of the frequency converter is shown in FIG. 3. Figure 12 The structure schematic diagram of the side of the compressor is shown in FIG. 4. Figure 10 、 Figure 11 and Figure 12As shown, the top of the frequency converter has an electric refrigeration radiator 100, a fan 101, a half-controlled rectifier 102, an inverter module 103, a system cooling flow channel 107, a cold motor and bearing flow channel branch 108, a cold frequency converter flow channel branch 109, and a radiator base plate 110; the side of the frequency converter has a compressor wiring cover 104, a compressor cylinder 105, an air duct 106, and an electronic expansion valve 111, which is arranged on the cold motor and bearing flow channel branch 108; as shown, Figure 12 As shown, the electric refrigeration radiator 100 is arranged on the side of the compressor.

[0159] Figure 8 A temperature control topology diagram of the frequency converter system is shown. As shown, Figure 8 The scheme of the present application provides a control system for controlling the integration of the frequency converter and the compressor cooling system, which includes the main control unit in the frequency converter system, the temperature sampling module, the electric refrigeration radiator 100, and other control modules. The internal main loop devices of 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 cylinder 105. In Figure 8 As shown in the example, the compressor main control unit and the frequency converter main control unit can communicate through CAN (Controller Area Network, a serial communication protocol for real-time applications). After the AC power supply self-wiring terminals R, S, and T are connected, the half-controlled rectifier circuit composed of switching tubes VT1, VT3, and VT5, diodes VD4, VD6, and VD2, and the filter capacitor C1 are used to filter the AC power supply, and then the full-controlled inverter circuit is used to invert the AC power supply to obtain three-phase voltage U, V, and W for the three-phase winding of the motor M. The filter unit is connected in parallel with the half-controlled rectifier circuit. The filter power supply is connected to the switching power supply, which provides DC+ and DC- power supply signals for the compressor main control unit and the frequency converter main control unit, respectively. The frequency converter main control unit receives the humidity sampling signal, the temperature sampling signal of the radiator base plate 110, the temperature sampling signal of the environment, and the temperature sampling signal of the compressor cylinder 105. The frequency converter main control unit sends a trigger signal ug to the half-controlled rectifier circuit, and the frequency converter main control unit sends a PWM pulse signal to the full-controlled inverter circuit.

[0160] In the scheme of the present application, the electric refrigeration radiator 100 is provided with refrigeration strips on the back, the bottom of which is directly bolted and fixed with the compressor cylinder 105, and the fan 101 is installed on the other side of the electric refrigeration radiator 100, the temperature of the wind sucked from the back is consistent with the internal environment temperature of the frequency converter, the wind first passes through the refrigeration strips on the back of the electric refrigeration radiator 100, the heat is transmitted to the compressor cylinder 105 in a conductive way, and on the other hand, the sucked hot wind is cooled down by the refrigeration characteristics of the electric refrigeration radiator 100 itself, then the cold wind is formed to blow to the internal parts of the frequency converter, and finally reaches the side of the compressor wiring cover 104 which is integrally formed with the compressor cylinder 105; according to Figure 10 As shown in the system flow channel 107 in the figure, the cold electric machine and bearing flow channel branch 108 are close to the compressor wiring cover 104, so the surface temperature of the compressor wiring cover 104 is low, when the formed hot wind which has cooled the internal heating devices of the frequency converter reaches the side of the compressor wiring cover 104, the hot wind is cooled down.

[0161] Therefore, by means of the electric refrigeration and conductive redundant refrigeration, the internal environment temperature of the frequency converter is reduced, the efficiency of cooling the internal temperature of the frequency converter is improved, and the refrigeration power of the electric refrigeration radiator 100 is flexibly adjusted, so that the system power consumption is greatly reduced, the frequency converter and the compressor control are flexible, and the reliability is high.

[0162] Since the processing and functions realized by the device of the present embodiment basically correspond to the embodiments, principles and examples of the foregoing method, details not described in the description of the present embodiment can be referred to the related description in the foregoing embodiments, which will not be repeated here.

[0163] According to the embodiments of the present application, an integrated compressor corresponding to the control device of the integrated compressor is also provided. The integrated compressor can include the control device of the integrated compressor described above.

[0164] Since the processing and functions realized by the integrated compressor of the present embodiment basically correspond to the embodiments, principles and examples of the foregoing device, details not described in the description of the present embodiment can be referred to the related description in the foregoing embodiments, which will not be repeated here.

[0165] According to the embodiments of the present application, a computer program product corresponding to the integrated compressor is also provided, which includes a computer program which, when executed by a processor, realizes the steps of the control method of the integrated compressor described above.

[0166] Since the processing and functions realized by the product of the embodiment are basically corresponding to the foregoing embodiments, principles and examples of the integrated compressor, the unexplained parts in the description of the embodiment can be seen in the foregoing embodiments, and will not be described here.

[0167] According to the embodiment of the present application, a storage medium corresponding to the control method of the integrated compressor is also provided, which comprises a stored program, wherein when the program is running, the device where the storage medium is located executes the steps of the control method of the integrated compressor.

[0168] Since the processing and functions realized by the storage medium of the embodiment are basically corresponding to the foregoing embodiments, principles and examples of the method, the unexplained parts in the description of the embodiment can be seen in the foregoing embodiments, and will not be described here.

[0169] In summary, the person skilled in the art can easily understand that the above-mentioned advantageous modes can be freely combined and superimposed without conflict.

[0170] The above only describes the embodiments of the present application and is not used to limit the present application. The present application can have various modifications and changes for the person skilled in the art. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the scope of claims of the present application.

Claims

1. A control method of an integrated compressor, characterized by, The integrated compressor has a compressor and a frequency converter, and further has a radiator base plate (110), an electric refrigeration device and a system cooling flow channel (107); the compressor has a compressor cylinder (105), the electric refrigeration device has an electric refrigeration radiator (100), the electric refrigeration radiator (100) is connected with the compressor cylinder (105) to form a conduction refrigeration device; the radiator base plate (110) is used for radiating a power module in the frequency converter; a throttling device is arranged on a cold motor and bearing flow channel branch (108) in the system cooling flow channel (107); a control method of the integrated compressor comprises the following steps: In the case that the frequency converter is running, the temperature of the radiator base plate (110) is acquired, the ambient temperature inside the frequency converter is acquired, and the temperature of the compressor cylinder (105) is acquired; According to the temperature of the radiator base plate (110) and the ambient temperature inside the frequency converter, the power of the electric refrigeration device is controlled; According to the temperature of the compressor cylinder (105), the opening degree of the throttling device is controlled.

2. The control method of an integrated compressor according to claim 1, characterized by, According to the temperature of the radiator base plate (110) and the ambient temperature inside the frequency converter, the power of the electric refrigeration device is controlled, which comprises the following steps: It is determined whether the temperature of the radiator base plate (110) and the ambient temperature inside the frequency converter simultaneously satisfy a condition of being less than a set first temperature threshold value; If it is determined that the temperature of the radiator base plate (110) and the ambient temperature inside the frequency converter simultaneously satisfy the condition of being less than the set first temperature threshold value, it is determined whether the temperature of the radiator base plate (110) and the ambient temperature inside the frequency converter simultaneously satisfy a condition of being greater than a set second temperature threshold value and less than a set third temperature threshold value; If it is determined that the temperature of the radiator base plate (110) and the ambient temperature inside the frequency converter simultaneously satisfy the condition of being greater than the set second temperature threshold value and less than the set third temperature threshold value, the power of the electric refrigeration device is controlled to run at a set first power; wherein the set first power is a power within a set error range of a rated power of the electric refrigeration device; If it is determined that the temperature of the radiator base plate (110) and the ambient temperature inside the frequency converter do not simultaneously satisfy the condition of being greater than the set second temperature threshold value and less than the set third temperature threshold value, the power of the electric refrigeration device is controlled to run at a set second power; wherein the set second power is less than the set first power.

3. The control method of an integrated compressor according to claim 1 or 2, characterized by, According to the temperature of the radiator base plate (110) and the ambient temperature inside the frequency converter, the power of the electric refrigeration device is controlled, which further comprises the following steps: It is determined whether the temperature of the radiator base plate (110) and the ambient temperature inside the frequency converter simultaneously satisfy a condition of being less than a set first temperature threshold value; If it is determined that the temperature of the radiator substrate (110) and the temperature of the environment inside the frequency converter do not simultaneously satisfy being less than a set first temperature threshold, the power of the electric refrigeration device is controlled to increase; wherein the power of the electric refrigeration device is controlled to increase includes: increasing the power of the electric refrigeration device in a manner that the set third power is increased every preset time length; After the first set time, it is determined whether the temperature of the radiator substrate (110) and the temperature of the environment inside the frequency converter simultaneously satisfy being greater than the set first temperature threshold; If it is determined that the temperature of the radiator substrate (110) and the temperature of the environment inside the frequency converter simultaneously satisfy being greater than the set first temperature threshold, the power of the electric refrigeration device is continuously controlled to increase; If it is determined that the temperature of the radiator substrate (110) and the temperature of the environment inside the frequency converter do not simultaneously satisfy being greater than the set first temperature threshold, it is determined whether the temperature of the radiator substrate (110) and the temperature of the environment inside the frequency converter simultaneously satisfy being greater than a set second temperature threshold and less than a set third temperature threshold: if yes, 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.

4. The control method of an integrated compressor according to claim 3, characterized by, According to the temperature of the radiator substrate (110) and the temperature of the environment inside the frequency converter, the power of the electric refrigeration device is controlled, and the method further includes: After the second set time, it is determined whether the temperature of the radiator substrate (110) and the temperature of the environment inside the frequency converter simultaneously satisfy still being greater than the set second temperature threshold in the case that the power of the electric refrigeration device has been continuously controlled to increase; If it is determined that the temperature of the radiator substrate (110) and the temperature of the environment inside the frequency converter do not simultaneously satisfy still being greater than the set second temperature threshold, the power of the electric refrigeration device is continuously controlled to increase; If it is determined that the temperature of the radiator substrate (110) and the temperature of the environment inside the frequency converter simultaneously satisfy still being greater than the set second temperature threshold, it is determined that the temperature distribution inside the frequency converter is unbalanced, the frequency converter is controlled to shut down, and a prompt message of over-temperature of the temperature inside the frequency converter is sent.

5. The control method of an integrated compressor according to claim 1, characterized by, According to the temperature of the compressor cylinder (105), the opening degree of the throttling device is controlled, and the method includes: It is determined whether the temperature of the compressor cylinder (105) is less than a set fourth temperature threshold; If it is determined that the temperature of the compressor cylinder (105) is less than the set fourth temperature threshold, the opening degree of the throttling device is controlled to decrease to a set first opening degree; If it is determined that the temperature of the compressor cylinder (105) is greater than or equal to the set fourth temperature threshold, the opening degree of the throttling device is controlled to increase to a set second opening degree; determining whether the temperature of the compressor cylinder (105) satisfies greater than a fourth temperature threshold and less than a fifth temperature threshold 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; maintaining the current operation of the frequency converter if it is determined that the temperature of the compressor cylinder (105) satisfies greater than the fourth temperature threshold and less than the fifth temperature threshold; returning 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 cylinder (105) does not satisfy greater than the fourth temperature threshold and less than the fifth temperature threshold.

6. The control method of an integrated compressor according to any one of claims 1, 2, 4, 5, characterized by, 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 arranged on the back of the electric refrigeration radiator (100), and the bottom of the electric refrigeration radiator (100) is fixedly connected with the compressor cylinder (105).

7. The control method of an integrated compressor according to claim 3, characterized by, 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 arranged on the back of the electric refrigeration radiator (100), and the bottom of the electric refrigeration radiator (100) is fixedly connected with the compressor cylinder (105).

8. A control device for an integrated compressor, characterized by 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 flow channel (107); the compressor has a compressor cylinder (105), the electric refrigeration device has an electric refrigeration radiator (100), the electric refrigeration radiator (100) is connected with the compressor cylinder (105) to form a conduction refrigeration device; the radiator substrate (110) is used for dissipating heat of a power module in the frequency converter; a throttling device is arranged on a cold motor and bearing flow channel branch (108) in the system cooling flow channel (107); and a control device of the integrated compressor comprises: an acquisition unit configured to acquire the temperature of the radiator substrate (110), acquire an ambient temperature inside the frequency converter, and acquire the temperature of the compressor cylinder (105) in a case where 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 (110) 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 cylinder (105).

9. An integrated compressor characterized by, The control device of the integrated compressor of claim 8. The control device of the integrated compressor of claim 8.

10. A storage medium, characterized by The storage medium includes a stored program, wherein the program, when executed, controls a device in which the storage medium is located to perform the control method of the integrated compressor according to any one of claims 1 to 7.

11. A computer program product comprising a computer program, characterized in that, The computer program, when executed by a processor, implements the steps of the control method of the integrated compressor according to any one of claims 1 to 7.

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