Driving power module of refrigerant cooling multi-split air conditioner compressor

Abstract

The utility model relates to the technical field of compressor driving power module cooling, and discloses a refrigerant cooling multi-split air conditioner compressor driving power module which is characterized in that a driving power module assembly is arranged on the outer side of a U-shaped refrigerant cooling pipe, and the end B of the U-shaped refrigerant cooling pipe is connected with a liquid pipe stop valve through a pipeline; one end of the liquid pipe stop valve is connected with a plurality of indoor evaporators through pipelines, and one end of each indoor evaporator is connected with an air pipe stop valve through a pipeline. The driving power module assembly of the refrigerant cooling multi-split air conditioner is adopted, the refrigerant temperature is low, the cooling effect is good, the compressor body can operate stably and reliably, the service life of the compressor body is prolonged, and it is guaranteed that the whole multi-split air conditioner system operates stably and reliably; the multi-split air conditioner is convenient to produce and machine, electric control board part production or multi-split air conditioner whole machine production is simple, assembly is rapid, no condensation water is generated in the driving power module assembly when the multi-split air conditioner operates, and the multi-split air conditioner is safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of compressor drive power module cooling technology, specifically a refrigerant-cooled multi-split air conditioning compressor drive power module. Background Technology

[0002] As air conditioning equipment develops towards higher energy efficiency and intelligence, multi-split air conditioning systems have been widely used due to their energy-saving, high-efficiency, flexible, and convenient features. However, in actual operation, the heat dissipation problem of the inverter compressor drive power module has gradually become prominent, becoming a key factor affecting system stability and service life.

[0003] For multi-split air conditioning systems that use air cooling to dissipate heat from the compressor drive power module, the compressor drive power module is cooled incidentally while the outdoor condenser fan is cooling the condenser. However, due to the low specific heat capacity of air, it is difficult to effectively remove the large amount of heat generated by the power module, and there is no significant improvement in the cooling of the compressor drive power module. Therefore, a refrigerant-cooled multi-split air conditioning compressor drive power module is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide a refrigerant-cooled multi-split air conditioner compressor drive power module to solve the problem mentioned in the background art that in multi-split air conditioner systems that use air cooling to dissipate heat from the compressor drive power module, the air conditioner compressor drive power module is cooled incidentally by the outdoor condenser fan. However, due to the low specific heat capacity of air, it is difficult to effectively remove the large amount of heat generated by the power module, and the cooling effect on the air conditioner compressor drive power module is not significantly improved.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a refrigerant-cooled multi-split air conditioner compressor drive power module, comprising a compressor body, the outlet end of the compressor body being connected to the D end of a four-way valve via a pipe, the C end of the four-way valve being connected to an outdoor condenser via a pipe, the outdoor condenser being connected to an outdoor electronic expansion valve and a one-way valve via pipes respectively, the outdoor electronic expansion valve and the one-way valve being connected to the A end of a U-shaped refrigerant cooling pipe via pipes, a drive power module assembly being disposed on the outside of the U-shaped refrigerant cooling pipe, the B end of the U-shaped refrigerant cooling pipe being connected to a liquid pipe shut-off valve via a pipe, one end of the liquid pipe shut-off valve being connected to several indoor evaporators via a pipe, one end of several indoor evaporators being connected to a gas pipe shut-off valve via a pipe, and one end of the gas pipe shut-off valve being connected to the E end of the four-way valve via a pipe.

[0006] Preferably, an electronic expansion valve is provided between the liquid pipe shut-off valve and each of the indoor evaporators.

[0007] Preferably, the S-end of the four-way valve described above is connected to the inlet end of the compressor body via a pipe.

[0008] Preferably, the aforementioned drive power module assembly includes a mounting plate, a compressor drive control board, a lower base plate, and an upper cover plate. The compressor drive control board is mounted on one side of the mounting plate, the lower base plate is mounted on the other side of the mounting plate, the U-shaped refrigerant cooling pipe is mounted on one side of the lower base plate, and the upper cover plate is mounted on one side of the lower base plate and located outside the U-shaped refrigerant cooling pipe.

[0009] Preferably, an installation groove is provided between the lower base plate and the upper cover plate, and the U-shaped refrigerant cooling pipe is located inside the installation groove.

[0010] Preferably, the inner sides of the mounting grooves of the lower base plate and the upper cover plate are coated with thermally conductive silicone grease.

[0011] Compared with the prior art, the present invention, by adopting the above technical solution, has the following technical effects:

[0012] 1. This utility model adopts a refrigerant-cooled drive power module component for multi-split air conditioners. The refrigerant temperature is low, the cooling effect is good, which enables the compressor body to operate stably and reliably, extends the compressor body's life, and ensures the overall stable and reliable operation of the multi-split air conditioning system.

[0013] 2. This utility model is convenient for production and processing. Whether it is the production of electrical control board parts or the production of multi-split air conditioners, it is relatively simple and quick to assemble. Moreover, the drive power module components do not produce condensation when the multi-split air conditioner is running, making it safe and reliable. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the air conditioning refrigerant flow system of this utility model;

[0016] Figure 2 This is a schematic diagram of the drive power module component structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the U-shaped refrigerant cooling pipe structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the lower base plate structure of this utility model.

[0019] Explanation of reference numerals in the attached drawings: 1. Compressor body; 2. Four-way valve; 3. Outdoor condenser; 4. Outdoor electronic expansion valve; 5. Check valve; 6. U-shaped refrigerant cooling pipe; 61. Drive power module assembly; 601. Mounting plate; 602. Compressor drive control board; 603. Lower base plate; 604. Upper cover plate; 605. Thermal grease; 7. Liquid pipe shut-off valve; 8. Electronic expansion valve; 9. Indoor evaporator; 10. Gas pipe shut-off valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0022] Example

[0023] Please see Figure 1-4This utility model provides a technical solution: a refrigerant-cooled multi-split air conditioner compressor drive power module, including a compressor body 1. The outlet end of the compressor body 1 is connected to the D end of a four-way valve 2 via a pipe. The C end of the four-way valve 2 is connected to an outdoor condenser 3 via a pipe. The outdoor condenser 3 is connected to an outdoor electronic expansion valve 4 and a one-way valve 5 via pipes. Both the outdoor electronic expansion valve 4 and the one-way valve 5 are connected to the A end of a U-shaped refrigerant cooling pipe 6 via pipes. A drive power module assembly 61 is arranged on the outside of the U-shaped refrigerant cooling pipe 6. The B end of the U-shaped refrigerant cooling pipe 6 is connected to a liquid pipe shut-off valve 7 via a pipe. One end of the liquid pipe shut-off valve 7 is connected to several indoor evaporators 9 via a pipe. One end of the several indoor evaporators 9 is connected to a gas pipe shut-off valve 10 via a pipe. One end of the gas pipe shut-off valve 10 is connected to the E end of the four-way valve 2 via a pipe. An electronic expansion valve 8 is arranged between the liquid pipe shut-off valve 7 and the several indoor evaporators 9. Under the outdoor cooling ambient temperature, the outdoor... The high-temperature, high-pressure refrigerant gas discharged from the outlet of the compressor body 1 passes through several pipes and then enters the four-way valve 2 through port D, and then flows out through port C. At this time, ports D and C are open, and ports E and S are open. The high-temperature, high-pressure refrigerant gas enters the outdoor condenser 3 to release heat and condense. The medium-temperature liquid refrigerant after condensation and heat release simultaneously flows through the outdoor electronic expansion valve 4 and the one-way valve 5. During this process, the refrigerant flow rate is large, the refrigerant temperature is high, and no condensate is generated on the surface of the copper pipes. The heated medium-temperature liquid refrigerant enters the interior of the U-shaped refrigerant cooling pipe 6 from port A, cooling the compressor drive control board 602, reducing its temperature, and ensuring its safe operation. The cooled liquid refrigerant flows out from port B of the U-shaped refrigerant cooling pipe 6. The medium-temperature liquid refrigerant from port B enters several electronic expansion valves 8 through the liquid pipe shut-off valve 7. The throttled refrigerant absorbs heat in several indoor evaporators 9, realizing the cooling of each indoor unit.

[0024] The S end of the four-way valve 2 is connected to the inlet end of the compressor body 1 through a pipe. The gaseous refrigerant flowing out of several indoor evaporators 9 is collected together, passes through the gas pipe shut-off valve 10, enters the four-way valve 2 through the E port, and then enters the compressor inlet through the S port and is compressed by the compressor. At this time, the D and C ports are open, and the E and S ports are open, thus realizing a refrigeration cycle.

[0025] In the heating cycle, under the outdoor heating ambient temperature, the high-temperature and high-pressure refrigerant gas discharged from the compressor body 1 of the outdoor unit refrigerant in the multi-split air conditioner passes through several pipes and then enters the four-way valve 2 through port D. At this time, ports D and E are open, and ports C and S are open. After entering the four-way valve 2 through port E, the high-temperature and high-pressure refrigerant gas enters several indoor evaporators 9 through the gas pipe shut-off valve 10 to release heat and condense, thus realizing the heating of each indoor unit. After condensation and heat release, the medium-temperature liquid refrigerant is collected by several electronic expansion valves 8 and then passes through the liquid pipe shut-off valve 7. During this process, the refrigerant flow rate is large and the refrigerant temperature is high, and no condensate is generated on the surface of the copper pipe. The medium-temperature liquid refrigerant from the liquid pipe shut-off valve 7 enters the U-shaped refrigerant cooling pipe 6 from port B to cool the compressor drive control board 602, reduce the chip temperature, and ensure the safe operation of the compressor drive control board 602. The cooled liquid refrigerant flows out from port A of the U-shaped refrigerant cooling pipe 6. The medium-temperature liquid refrigerant from port A enters the outdoor electronic expansion valve 4 for throttling and pressure reduction to low-temperature, low-pressure liquid refrigerant. During this process, the one-way valve 5 is open in one direction with almost no refrigerant flow. The liquid refrigerant from the outdoor electronic expansion valve 4 enters the outdoor condenser 3 to evaporate and absorb heat. The gaseous refrigerant from the outdoor condenser 3 enters the four-way valve 2 through port C and then enters the compressor inlet through port S and is compressed by the compressor. At this time, ports D and E are open, and ports C and S are open, thus completing a heating cycle.

[0026] Whether cooling or heating, the medium used to cool the multi-split air conditioner compressor drive power module component 61 is a medium-temperature liquid refrigerant. No condensate water is generated on the surface of the copper pipe, which can effectively protect the surface of the multi-split air conditioner compressor drive electrical control board 602 from condensation, and ensures strong electrical safety.

[0027] The drive power module assembly 61 includes a mounting plate 601, a compressor drive control board 602, a lower base plate 603, and an upper cover plate 604. The compressor drive control board 602 is mounted on one side of the mounting plate 601, and the lower base plate 603 is mounted on the other side of the mounting plate 601. A U-shaped refrigerant cooling pipe 6 is mounted on one side of the lower base plate 603, and the upper cover plate 604 is mounted on one side of the lower base plate 603 and located outside the U-shaped refrigerant cooling pipe 6. The U-shaped refrigerant cooling pipe 6 is a copper pipe with an outer diameter of 12.7 mm. The lower base plate 603 is an aluminum heat-conducting plate with two 12.7 mm diameter mounting grooves in the middle, and is formed by an aluminum plate mold. The upper cover plate 604 is an aluminum heat-conducting plate with two 12.7 mm diameter grooves in the middle, and is formed by an aluminum plate mold.

[0028] A mounting groove is provided between the lower base plate 603 and the upper cover plate 604. The U-shaped refrigerant cooling pipe 6 is located inside the mounting groove. The inner sides of the mounting grooves of the lower base plate 603 and the upper cover plate 604 are coated with thermal grease 605. The thermal grease 605 is applied to the mounting grooves of the lower base plate 603 and the upper cover plate 604 or to the surface of the U-shaped refrigerant cooling pipe 6, so that the U-shaped refrigerant cooling pipe 6 can cool the compressor drive control board 602.

[0029] Working principle or structural principle: Refrigeration cycle. In a multi-split air conditioner, under the outdoor cooling ambient temperature, the high-temperature, high-pressure refrigerant gas discharged from the compressor body 1 flows through several pipes and then enters the four-way valve 2 through port D, exiting through port C. At this time, ports D and C are open, and ports E and S are open. The high-temperature, high-pressure refrigerant gas enters the outdoor condenser 3, releasing heat and condensing. The medium-temperature liquid refrigerant after condensation and heat release simultaneously flows through the outdoor electronic expansion valve 4 and the one-way valve 5. During this process, the refrigerant flow rate is large. At high temperatures, no condensation forms on the copper pipe surface. The medium-temperature liquid refrigerant, after condensation and heat release, enters the interior of the U-shaped refrigerant cooling pipe 6 through port A, cooling the compressor drive control board 602 and reducing its temperature to ensure its safe operation. The cooled liquid refrigerant flows out from port B of the U-shaped refrigerant cooling pipe 6. The medium-temperature liquid refrigerant from port B passes through the liquid pipe shut-off valve 7 and enters several electronic expansion valves 8. The throttled refrigerant absorbs heat in several indoor evaporators 9, achieving refrigeration in each indoor unit. The gaseous refrigerant flowing out from several indoor evaporators 9 gathers together, passes through the gas pipe shut-off valve 10, enters the four-way valve 2 through port E, and then enters the compressor inlet through port S, where it is compressed by the compressor. At this time, ports D and C are open, and ports E and S are open, thus completing one refrigeration cycle.

[0030] In the heating cycle, under the outdoor heating ambient temperature, the high-temperature and high-pressure refrigerant gas discharged from the compressor body 1 of the outdoor unit refrigerant in the multi-split air conditioner passes through several pipes and then enters the four-way valve 2 through port D. At this time, ports D and E are open, and ports C and S are open. After entering the four-way valve 2 through port E, the high-temperature and high-pressure refrigerant gas enters several indoor evaporators 9 through the gas pipe shut-off valve 10 to release heat and condense, thus realizing the heating of each indoor unit. After condensation and heat release, the medium-temperature liquid refrigerant gathers together through several electronic expansion valves 8 and then passes through the liquid pipe shut-off valve 7. During this process, the refrigerant flow rate is large and the refrigerant temperature is high, and no condensate is generated on the surface of the copper pipe. The medium-temperature liquid refrigerant from the liquid pipe shut-off valve 7 enters the U-shaped refrigerant cooling pipe 6 from port B to cool the compressor drive control board 602, reduce the chip temperature, and ensure the safe operation of the compressor drive control board 602. The cooled liquid refrigerant flows out from port A of the U-shaped refrigerant cooling pipe 6. The medium-temperature liquid refrigerant from port A enters the outdoor electronic expansion valve 4 for throttling and pressure reduction to low-temperature, low-pressure liquid refrigerant. During this process, the one-way valve 5 is open unidirectionally with almost no refrigerant flow. The liquid refrigerant from the outdoor electronic expansion valve 4 enters the outdoor condenser 3 for evaporation and heat absorption. The gaseous refrigerant from the outdoor condenser 3 enters the four-way valve 2 through port C and then enters the compressor inlet through port S and is compressed by the compressor. At this time, ports D and E are open, and ports C and S are open, thus completing a heating cycle.

[0031] Whether cooling or heating, the medium used to cool the multi-split air conditioner compressor drive power module component 61 is a medium-temperature liquid refrigerant. No condensate water is generated on the surface of the copper pipe, which can effectively protect the surface of the multi-split air conditioner compressor drive electrical control board 602 from condensation, and ensures strong electrical safety.

[0032] Those skilled in the art will understand that the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways, even if such combinations or combinations are not explicitly described in this utility model. In particular, the features described in the various embodiments and / or claims of this utility model can be combined or combined in various ways without departing from the spirit and teachings of this utility model. All such combinations and / or combinations fall within the scope of this utility model.

Claims

1. A refrigerant-cooled multi-split air conditioning compressor drive power module, comprising a compressor body (1), characterized in that: The outlet end of the compressor body (1) is connected to the D end of a four-way valve (2) via a pipe. The C end of the four-way valve (2) is connected to an outdoor condenser (3) via a pipe. The outdoor condenser (3) is connected to an outdoor electronic expansion valve (4) and a one-way valve (5) via pipes. The outdoor electronic expansion valve (4) and the one-way valve (5) are both connected to the A end of a U-shaped refrigerant cooling pipe (6) via pipes. A drive power module assembly (61) is provided on the outside of the U-shaped refrigerant cooling pipe (6). The B end of the U-shaped refrigerant cooling pipe (6) is connected to a liquid pipe shut-off valve (7) via a pipe. One end of the liquid pipe shut-off valve (7) is connected to several indoor evaporators (9) via a pipe. One end of several indoor evaporators (9) is connected to a gas pipe shut-off valve (10) via a pipe. One end of the gas pipe shut-off valve (10) is connected to the E end of the four-way valve (2) via a pipe.

2. The refrigerant-cooled multi-split air conditioning compressor drive power module according to claim 1, characterized in that: An electronic expansion valve (8) is provided between the liquid pipe shut-off valve (7) and each of the indoor evaporators (9).

3. The refrigerant-cooled multi-split air conditioning compressor drive power module according to claim 1, characterized in that: The S end of the four-way valve (2) is connected to the inlet end of the compressor body (1) via a pipe.

4. The refrigerant-cooled multi-split air conditioning compressor drive power module according to claim 1, characterized in that: The drive power module assembly (61) includes a mounting plate (601), a compressor drive control board (602), a lower base plate (603), and an upper cover plate (604). The compressor drive control board (602) is mounted on one side of the mounting plate (601), the lower base plate (603) is mounted on the other side of the mounting plate (601), the U-shaped refrigerant cooling pipe (6) is mounted on one side of the lower base plate (603), and the upper cover plate (604) is mounted on one side of the lower base plate (603) and located outside the U-shaped refrigerant cooling pipe (6).

5. The refrigerant-cooled multi-split air conditioning compressor drive power module according to claim 4, characterized in that: An installation groove is provided between the lower base plate (603) and the upper cover plate (604), and the U-shaped refrigerant cooling pipe (6) is located inside the installation groove.

6. The refrigerant-cooled multi-split air conditioning compressor drive power module according to claim 4, characterized in that: The inner sides of the mounting grooves of the lower base plate (603) and the upper cover plate (604) are coated with thermally conductive silicone grease (605).

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