Housing structure of an electric scroll compressor

Abstract

The present invention discloses a housing structure of an electric scroll compressor, which includes an end cover and a housing. The end cover is fixedly installed on the housing. The housing includes a first housing and a second housing, and the second housing is located inside the first housing. The first housing and the second housing are hermetically connected together by welding. A cooling flow channel is provided between the first housing and the second housing, and the cooling flow channel is in a radial S shape. It also includes a first cooling ring and a second cooling ring. The first cooling ring is arranged outside the base, and there are two groups of second cooling rings, which are respectively arranged at both ends of the stator assembly of the motor. The cooling flow channel is communicated with the first cooling ring and the second cooling ring for heat dissipation. With the above structure, the first cooling ring and the second cooling ring are communicated through the cooling flow channel to realize the cooling of the overall scroll compressor, and the heat inside the compressor is dissipated through the heat exchange of the coolant, so as to realize the long-term operation of the compressor.

Description

Technical Field

[0001] The present invention relates to the technical field of the heat dissipation housing structure of a scroll compressor, and particularly to a housing structure of an electric scroll compressor. Background Art

[0002] An electric scroll compressor mainly consists of scroll plates where a fixed scroll plate and a moving scroll plate with the same linear shape mesh with each other. As the drive shaft rotates, the moving scroll plate operates along a trajectory within the fixed scroll plate, causing multiple compression chambers with gradually decreasing volumes from the outside to the inside to form between the moving and fixed scroll plates. The refrigeration gas is gradually compressed in the multiple crescent-shaped compression chambers formed by the moving and fixed scroll plates. Since all working chambers gradually become smaller from the outside to the inside and are in different compression states, it ensures that the electric scroll compressor can continuously perform the working processes of suction, compression, and exhaust.

[0003] Currently, the motor of an electric scroll compressor is placed inside the compressor. Therefore, during operation, the compression components and drive components generate a large amount of heat, resulting in the inability to quickly dissipate the heat inside the compressor, with poor heat dissipation effect, which is not conducive to the long-term operation of the compressor. Summary of the Invention

[0004] In order to overcome the above technical problems, the purpose of the present invention is to provide a housing structure of an electric scroll compressor. By setting a first cooling ring, a second cooling ring, and a cooling flow path, the cooling flow path connects the first cooling ring and the second cooling ring to achieve the cooling and temperature reduction of the overall scroll compressor, and dissipate the heat inside the compressor through the heat exchange of the coolant, enabling the long-term operation of the compressor.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A housing structure of an electric scroll compressor includes an end cover and a housing. The end cover is fixedly installed on the housing. The housing includes a first housing and a second housing, and the second housing is located inside the first housing. The first housing and the second housing are hermetically connected together by welding. A cooling flow path is provided between the first housing and the second housing, and the cooling flow path is in a radial S shape.

[0007] This housing structure further includes a first cooling ring and a second cooling ring. The first cooling ring is arranged outside the machine base, and there are two groups of second cooling rings, which are respectively arranged at both ends of the stator assembly of the motor. The cooling flow path is connected to the first cooling ring and the second cooling ring for heat dissipation.

[0008] As a further solution of the present invention: The end cover and the second housing are connected together by sealing bolts, and a sealing gasket is provided at the connection.

[0009] As a further solution of the present invention: The cooling channel is divided into a first channel area, a second channel area, a third channel area, and a fourth channel area by a first cooling ring and two groups of second cooling rings. The first channel area is located at the front end of the first cooling ring, the second channel area is located between the first cooling ring and the first group of second cooling rings, the third channel area is between the two groups of second cooling rings, and the fourth channel area is at the rear end of the second group of second cooling rings. The cooling channels inside each channel area are radially spirally connected.

[0010] As a further solution of the present invention: The inner side surface of the first outer shell is provided with a first head cooling half-channel, a first main cooling half-channel, a liquid inlet channel, and a liquid outlet channel. The first head cooling half-channel is communicated with the liquid inlet channel, the first main cooling half-channel at the position of the first channel area is communicated with the first head cooling half-channel, the first main cooling half-channel in the fourth channel area is communicated with the liquid outlet channel, and the outer side surface of the second outer shell is provided with a second head cooling half-channel and a second main cooling half-channel at the corresponding positions. The first head cooling half-channel and the second head cooling half-channel cooperate to form a head cooling channel, the first main cooling half-channel and the second main cooling half-channel cooperate to form a main cooling channel, and the liquid inlet channel, the head cooling channel, the main cooling channel, and the liquid outlet channel form the cooling channel.

[0011] As a further solution of the present invention: The radius of the head cooling channel is greater than the radius of the main cooling channel.

[0012] As a further solution of the present invention: A sealing through groove is provided at the top of the second outer shell, and a sealing mating groove is provided at the top of the first outer shell. The first cooling ring and the second cooling ring are sealingly connected to the sealing through groove and the sealing mating groove.

[0013] As a further solution of the present invention: The first outer shell and the second outer shell are provided with a transverse communication channel at the communication position of the first cooling ring and the second cooling ring. The transverse communication channel communicates the first cooling ring, the second cooling ring, and the cooling channel.

[0014] As a further solution of the present invention: The second cooling ring includes a first cooling half-ring and a second cooling half-ring. The inner side surfaces of the first cooling half-ring and the second cooling half-ring are both provided with internal cooling half-channels. The two groups of internal cooling half-channels cooperate to form an internal cooling channel. Assembly half-platforms are provided at the heads of the first cooling half-ring and the second cooling half-ring. The two groups of assembly half-platforms are connected to form an assembly platform, which is sealingly mated with the sealing through groove and the sealing mating groove. An outlet is provided at the assembly half-platform of the first cooling half-ring, and an inlet is provided at the assembly half-platform of the second cooling half-ring. A second positioning round platform is provided at the position of the inlet, and a first positioning round platform is provided at the position of the outlet.

[0015] As a further solution of the present invention: The first outer shell and the second outer shell are provided with positioning sealing grooves at one end of the transverse communication channel close to the first cooling ring or the second cooling ring. The first positioning round platform and the second positioning round platform are both sealingly connected to the corresponding positioning sealing grooves.

[0016] Advantages of the present invention:

[0017] 1. By providing the first cooling ring, the second cooling ring and the cooling flow path, the cooling flow path connects the first cooling ring and the second cooling ring, realizing the cooling of the overall scroll compressor, dissipating the heat inside the compressor through the heat exchange of the coolant, and enabling the compressor to work for a long time.

[0018] 2. The first cooling ring and the two groups of second cooling rings divide the cooling flow path into a first flow path area, a second flow path area, a third flow path area and a fourth flow path area. Through the cooperation of multiple flow path areas with the first cooling ring and the two groups of second cooling rings, a continuous cooling path is formed between the first housing and the second housing, increasing the area through which the coolant flows, enabling the coolant to flow at different continuous positions, fully taking away the heat at each position inside the compressor, quickly dissipating the heat inside the compressor, and increasing the working duration of the compressor.

[0019] 3. Positioning and sealing grooves are provided at one end of the lateral communication flow path between the first housing and the second housing close to the first cooling ring or the second cooling ring. The first positioning round platform and the second positioning round platform are both hermetically connected to the corresponding positioning and sealing grooves, playing a positioning role in the installation of the first cooling ring and the second cooling ring, and preventing deflection when the coolant impacts. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the drawings.

[0021] Figure 1 is a schematic diagram of the overall internal structure of the present invention;

[0022] Figure 2 is a schematic diagram of the structure of the second cooling ring in the present invention;

[0023] Figure 3 is a schematic diagram of the internal structure of the first cooling half-ring in the present invention;

[0024] Figure 4 is Figure 1 an enlarged schematic diagram of area A in

[0025] Figure 5 is a schematic diagram of the structure of an electric scroll compressor in the prior art.

[0026] In the figure: 1. First outer shell; 11. First head cooling semi-channel; 12. First main cooling semi-channel; 13. Liquid outlet channel; 14. Sealing fit groove; 15. Liquid inlet channel; 2. Second outer shell; 21. Second head cooling semi-channel; 22. Second main cooling semi-channel; 23. Sealing through groove; 3. End cover; 31. Sealing bolt; 4. First cooling ring; 5. Second cooling ring; 51. First cooling semi-ring; 511. Assembly semi-platform; 512. Internal cooling semi-channel; 513. Liquid outlet; 52. Second cooling semi-ring; 53. First positioning round platform; 54. Second positioning round platform; 6. Liquid inlet connector; 7. Liquid outlet connector; 8. Transverse communication channel; 9. Positioning sealing groove; 10. Static scroll plate; 20. Moving scroll plate; 30. Machine base; 40. Motor; 50. Rotating shaft. Detailed implementation manners

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] As Figure 5 shown, an electric scroll compressor in the prior art includes an outer shell and internal related structures. Among them, the internal related structures include a motor 40 arranged at one end inside the outer shell. The output shaft of the motor 40 is connected to a rotating shaft 50. A machine base 30 is arranged in the middle inside the outer shell. The rotating shaft 50 is rotatably connected to the machine base 30. And the front end of the rotating shaft 50 is connected to a moving scroll plate 20. A static scroll plate 10 is arranged at one end of the head of the outer shell. Among them, the moving scroll plate 20 and the static scroll plate 10 mesh with each other to achieve air compression. However, since the motor 40 is placed inside the compressor, during operation, the compression component and the driving component will generate a large amount of heat, resulting in the inability to quickly dissipate the heat inside the compressor, with poor heat dissipation effect, which is not conducive to the long-term operation of the compressor.

[0029] As shown in the present invention Figures 1-4 shown, it is a housing structure of an electric scroll compressor. The housing structure includes an end cover 3 and an outer shell. The outer shell includes a first outer shell 1 and a second outer shell 2. And the second outer shell 2 is located inside the first outer shell 1. The first outer shell 1 and the second outer shell 2 are sealed together by welding to form the outer shell, having the ability of sealing and preventing leakage. Further, the end cover 3 is connected to the second outer shell 2 by a sealing bolt 31. And a sealing gasket is arranged at the connection. The end cover 3, the second outer shell 2 and the first outer shell 1 are integrally sealed and installed by the cooperation of the sealing bolt 31 and the sealing gasket to form the sealed housing structure of the electric scroll compressor.

[0030] Furthermore, the housing structure further includes a first cooling ring 4 and a second cooling ring 5. The first cooling ring 4 is disposed outside the machine base 30, and there are two sets of the second cooling rings 5, which are respectively disposed at both ends of the stator assembly of the motor 40. Synchronously, a cooling flow path is provided between the first housing 1 and the second housing 2 in the housing structure. The cooling flow path is a radial S shape, and the first cooling ring 4 and the second cooling rings 5 are connected through the cooling flow path to achieve the cooling of the overall scroll compressor, and the heat inside the compressor is dissipated through the heat exchange of the coolant, so as to achieve the long-term operation of the compressor.

[0031] Furthermore, as Figure 1 shown, the above-mentioned cooling flow path is divided into a first flow path area, a second flow path area, a third flow path area, and a fourth flow path area by the first cooling ring 4 and the two sets of second cooling rings 5. The first flow path area is located at the front end of the first cooling ring 4, the second flow path area is located between the first cooling ring 4 and the first set of second cooling rings 5, the third flow path area is between the two sets of second cooling rings 5, and the fourth flow path area is at the rear end of the second set of second cooling rings 5. The cooling flow paths inside each flow path area are radially spirally connected. The first flow path area is connected to the liquid inlet joint 6, and the fourth flow path area is connected to the liquid outlet joint 7. Through the cooperation of multiple flow path areas, the first cooling ring 4 and the two sets of second cooling rings 5 form a continuous cooling path between the first housing 1 and the second housing 2. By introducing the coolant, the heat inside the compressor is fully transferred out, the temperature inside the compressor is reduced, and the working duration of the compressor is increased.

[0032] Even further, as Figure 1As shown, on the inner side of the above-mentioned first housing 1 and located in the first flow channel area, a first head cooling half-channel 11 and a liquid inlet flow channel 15 are provided. The first head cooling half-channel 11 is connected to the liquid inlet flow channel 15. A first main cooling half-channel 12 is also opened on the inner side of the first housing 1, and the first main cooling half-channel 12 is connected to the first head cooling half-channel 11. Among them, the radius of the first head cooling half-channel 11 is larger than that of the first head cooling half-channel 11, which is convenient for introducing the coolant. On the outer side of the second housing 2 and located in the first flow channel area, a second head cooling half-channel 21 is provided. The second head cooling half-channel 21 cooperates with the first head cooling half-channel 11 to form a head cooling flow channel with a larger diameter. A second main cooling half-channel 22 is also opened on the outer side of the second housing 2, and the second main cooling half-channel 22 corresponds to the position of the first main cooling half-channel 12 and cooperates to form a main cooling flow channel. The head cooling flow channel is connected to the main cooling flow channel to circulate the coolant. Further, an outlet flow channel 13 is opened at the tail of the first housing 1, and the outlet flow channel 13 communicates with the first main cooling half-channel 12 at the tail end. The liquid inlet flow channel 15, the head cooling flow channel, the main cooling flow channel, and the outlet flow channel 13 constitute the above-mentioned cooling flow channel. The liquid inlet flow channel 15 is connected to the liquid inlet joint 6, and the outlet flow channel 13 is connected to the outlet joint 7. Through the connection of the liquid inlet flow channel 15, the head cooling flow channel, the main cooling flow channel, the first cooling ring 4, the second cooling ring 5, and the outlet flow channel 13, the coolant flows inside the compressor, and the heat inside the compressor is taken out through heat exchange.

[0033] Further, as Figure 1 and Figure 4 shown, the second housing 2 is provided with a matching sealing through groove 23 at the positions where the first cooling ring 4 and the second cooling ring 5 are arranged. The first cooling ring 4 and the second cooling ring 5 pass through the sealing through groove 23 and are hermetically connected to the second housing 2 to prevent the coolant from penetrating. Similarly, the first housing 1 is provided with a sealing mating groove 14 at the top position of the sealing through groove 23, and the sealing mating groove 14 is also hermetically connected to the first cooling ring 4 and the second cooling ring 5. Waterproof glue is coated at the joints to prevent the coolant from leaking. Further, as Figure 4 shown, the first housing 1 and the second housing 2 are provided with a transverse communication flow channel 8 at the communicating positions of the first cooling ring 4 and the second cooling ring 5. Through the transverse communication flow channel 8, the main cooling flow channels in the first flow channel area, the second flow channel area, the third flow channel area, and the fourth flow channel area are connected to the first cooling ring 4 and the second cooling ring 5.

[0034] Further, as Figures 1-3As shown in the figure, the above-mentioned second cooling ring 5 includes a first cooling half-ring 51 and a second cooling half-ring 52. The first cooling half-ring 51 and the second cooling half-ring 52 are fixedly bonded together by waterproof glue. Inner cooling half-channels 512 are provided on the inner sides of both the first cooling half-ring 51 and the second cooling half-ring 52. The two sets of inner cooling half-channels 512 cooperate to form an inner cooling flow channel. Assembly half-platforms 511 are provided at the heads of both the first cooling half-ring 51 and the second cooling half-ring 52. The two sets of assembly half-platforms 511 are connected together to form an assembly platform, which is in sealing cooperation with the sealing through-groove 23 and the sealing mating groove 14. A liquid outlet 513 is provided in the assembly half-platform 511 of the first cooling half-ring 51, and a liquid inlet (not shown in the figure) is provided in the assembly half-platform 511 of the second cooling half-ring 52. A second positioning round platform 54 is provided at the liquid inlet position of the second cooling half-ring 52, and a first positioning round platform 53 is provided at the liquid outlet 513 position of the first cooling half-ring 51. And synchronously as Figure 4 shown in the figure, the first housing 1 and the second housing 2 are provided with positioning sealing grooves 9 at one end of the transverse communication flow channel 8 close to the first cooling ring 4 or the second cooling ring 5. Both the first positioning round platform 53 and the second positioning round platform 54 are in sealing connection with the corresponding positioning sealing grooves 9, which play a positioning role in the installation of the first cooling ring 4 and the second cooling ring 5, and avoid deflection when the coolant impacts;

[0035] Furthermore, the structure of the first cooling ring 4 is the same as that of the second cooling ring 5 only in terms of safety, and only the dimensions are adapted and adjusted according to the actual situation. The liquid inlet joint 6 and the liquid outlet joint 7 connected to the outside of the first housing 1 are both connected to external equipment, realizing sufficient cooling and temperature reduction of the compressor.

[0036] The working principle of the present invention:

[0037] When the compressor works, coolant is injected through the liquid inlet joint 6. The coolant flows through the first flow channel area, enters the first cooling ring 4, flows through the inner cooling flow channel of the first cooling ring 4, then flows into the second flow channel area. After flowing through the second flow channel area, it enters the first group of second cooling rings 5. After flowing through the inner cooling flow channel of the first group of second cooling rings 5, it enters the third flow channel area. After flowing through the third flow channel area, it enters the second group of second cooling rings 5. After flowing through the inner cooling flow channel of the second group of second cooling rings 5, it enters the fourth flow channel area, and finally flows out from the liquid outlet joint 7, realizing the overall cooling and heat dissipation of the electric scroll compressor. The continuous flow of coolant at different positions fully takes away the heat at each position inside the compressor, quickly dissipates the heat inside the compressor, and improves the working duration of the compressor.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, as well as a specific orientation structure and operation. Therefore, it should not be construed as a limitation to the present invention. In addition, "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0039] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "coupled", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] The above has described in detail one embodiment of the present invention, but the content described is only the preferred embodiment of the present invention and cannot be considered as used to limit the scope of implementation of the present invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still fall within the scope covered by the patent of the present invention.

Claims

1. A housing structure of an electric scroll compressor, comprising an end cover (3), a base (30) and an outer shell, characterized in that, The housing includes a first housing (1) and a second housing (2). An end cover (3) is fixedly installed on the second housing (2), and the second housing (2) is located inside the first housing (1). The first housing (1) and the second housing (2) are hermetically connected together by welding. A cooling flow channel is provided between the first housing (1) and the second housing (2). This housing structure further includes a first cooling ring (4) and a second cooling ring (5). The first cooling ring (4) is arranged outside the machine base (30), and there are two sets of the second cooling rings (5), which are respectively arranged at both ends of the stator assembly of the motor (40). The cooling flow channel is communicated with the first cooling ring (4) and the second cooling ring (5) for heat dissipation. On the inner side surface of the first housing (1), a first head cooling half-channel (11), a first main cooling half-channel (12), a liquid inlet flow channel (15) and a liquid outlet flow channel (13) are provided. On the outer side surface of the second housing (2) at positions corresponding to the first head cooling half-channel (11) and the first main cooling half-channel (12), a second head cooling half-channel (21) and a second main cooling half-channel (22) are provided. On the top of the second housing (2) along the radial direction of the housing structure, a sealing through groove (23) is provided. On the top of the first housing (1) along the radial direction of the housing structure, a sealing mating groove (14) is provided. The first cooling ring (4) is hermetically connected to its corresponding sealing through groove (23) and sealing mating groove (14). The second cooling ring (5) is hermetically connected to its corresponding sealing through groove (23) and sealing mating groove (14). The second cooling ring (5) includes a first cooling half-ring (51) and a second cooling half-ring (52). Inner cooling half-channels (512) are provided on the inner side surfaces of the first cooling half-ring (51) and the second cooling half-ring (52). The two sets of inner cooling half-channels (512) cooperate to form an inner cooling flow channel. Assembly half-stages (511) are provided at the heads of the first cooling half-ring (51) and the second cooling half-ring (52). The two sets of assembly half-stages (511) are connected to form an assembly stage, which is hermetically mated with the corresponding sealing through groove (23) and sealing mating groove (14). A liquid outlet (513) is provided in the assembly half-stage (511) of the first cooling half-ring (51). An inlet is provided in the assembly half-stage (511) of the second cooling half-ring (52). A second positioning round platform (54) is provided at the inlet position, and a first positioning round platform (53) is provided at the liquid outlet (513) position. The first housing (1) and the second housing (2) are provided with transverse communication flow channels (8) at their connection positions with the first cooling ring (4) and the second cooling ring (5). The transverse communication flow channels (8) communicate the first cooling ring (4), the second cooling ring (5) and the cooling flow channel. The first housing (1) and the second housing (2) are provided with positioning sealing grooves (9) at one end of the transverse communication flow channel (8) close to the first cooling ring (4) or the second cooling ring (5). Both the first positioning round platform (53) and the second positioning round platform (54) are hermetically connected to the corresponding positioning sealing grooves (9). The cooling channels are separated into a first channel area, a second channel area, a third channel area, and a fourth channel area by a first cooling ring (4) and two groups of second cooling rings (5). The first channel area is located at the front end of the first cooling ring (4), the second channel area is located between the first cooling ring (4) and the first group of second cooling rings (5), the third channel area is between the two groups of second cooling rings (5), and the fourth channel area is at the rear end of the second group of second cooling rings (5). The cooling channels inside each channel area are helically connected.

2. The housing structure of an electric scroll compressor according to claim 1, wherein, The end cover (3) and the second housing (2) are connected together by sealing bolts (31), and a gasket is provided at the connection.

3. The housing structure of an electric scroll compressor according to claim 1, characterized in that, The first head cooling half-channel (11) is communicated with the liquid inlet channel (15). The first main cooling half-channel (12) at the position of the first channel area is communicated with the first head cooling half-channel (11). The first main cooling half-channel (12) in the fourth channel area is communicated with the liquid outlet channel (13). The first head cooling half-channel (11) and the second head cooling half-channel (21) cooperate to form a head cooling channel. The first main cooling half-channel (12) and the second main cooling half-channel (22) cooperate to form a main cooling channel. The liquid inlet channel (15), the head cooling channel, the main cooling channel, and the liquid outlet channel (13) form the cooling channels.

4. The housing structure of an electric scroll compressor according to claim 3, characterized in that, The radius of the head cooling channel is greater than the radius of the main cooling channel.

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