Rack with bypass passage and compressor

Abstract

The utility model provides a rack with a bypass flow path and a compressor, the rack with the bypass flow path comprises a rack main body and the bypass flow path arranged on the outer wall of the rack main body, and the bypass flow path is arranged from the first end of the outer wall of the rack main body to the second end of the outer wall of the rack main body in a surrounding mode. The rack with the flow-around passage is compact in overall structure, during internal layout of a large-displacement compressor, additional parts are not needed, the internal occupied space of the compressor is reduced, through the special shape design of the flow-around passage, on the basis of rotary flow guide, the oil separation effect is improved, the oil spitting rate of the compressor is reduced, and the service life of the compressor is prolonged. And meanwhile, the reliability of the large-displacement compressor in an air conditioning system with long piping and high fall is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressors, in particular to a rack with a flow-around passage and a compressor. BACKGROUND

[0002] With the continuous expansion of the displacement of scroll compressors, the oil discharge rate of scroll compressors also increases, and the oil separation effect in the compressor cavity of the traditional structure is insufficient to reduce the oil discharge rate of large-displacement compressors.

[0003] At the same time, with the update and iteration of compressor products in the past two years, the current trend is to use large-displacement compressors to replace multiple small-displacement compressors, which increases the capacity of the air conditioning system, lengthens the pipe to 100 to 150 meters, and increases the installation height difference between the indoor and outdoor units to 30 to 50 meters. The increase in pipe length and the increase in pipe height difference greatly increase the difficulty of compressor oil return, making it easy for refrigerant oil to remain in the pipe, joints, and vessels, affecting the long-term operation and use of large-displacement compressors and reducing reliability. In addition, the scroll compressor industry currently generally uses a flow guide plate structure welded to the pipe shell to control the flow direction of the refrigerant and increase the oil separation effect. However, as the displacement of the compressor increases, the layout inside the compressor shell becomes more and more compact, leaving less and less space for the installation of the flow guide plate.

[0004] Therefore, it is necessary to design a rack with a flow-around passage to solve the above problems. CONTENT OF THE UTILITY MODEL

[0005] Therefore, in order to overcome the defects of the prior art, the utility model provides a rack with a flow-around passage and a compressor, which effectively solves the problem of increasing oil return difficulty caused by the increase in displacement of the existing compressor.

[0006] According to the first aspect of the utility model, a rack with a flow-around passage is provided, wherein the rack with a flow-around passage comprises a rack main body and a flow-around passage arranged on the outer wall of the rack main body, and the flow-around passage is formed by the first end of the outer wall of the rack main body to the second end of the outer wall of the rack main body.

[0007] Preferably, the two ends of the rack main body in the axial direction are the first end of the outer wall of the rack main body and the second end of the outer wall of the rack main body.

[0008] Preferably, the flow-around passage comprises a vertical part and a flow-around part, the vertical part extends from the first end of the outer wall of the rack main body to the second end of the outer wall of the rack main body in the axial direction, the first end of the flow-around part is connected with the vertical part, and the second end of the flow-around part is arranged at the second end of the outer wall of the rack main body.

[0009] Preferably, the vertical part comprises a first side wall, a bottom wall and a second side wall, the first side wall and the second side wall are oppositely arranged on two sides of the bottom wall, and the second side wall is connected with the bottom wall; the flow-around part is connected with the first side wall and the bottom wall.

[0010] Preferably, the flow-around part comprises a rotation guide side and an inclined flow side, a gas flow channel is arranged between the rotation guide side and the inclined flow side, the rotation guide side is close to a first end of the outer wall of the rack main body relative to the inclined flow side, the rotation guide side is connected with the first side wall, and the inclined flow side is connected with the bottom wall.

[0011] Preferably, the rotation guide side comprises a guide body part and a first bending part, the guide body part is connected with the first side wall, and the guide body part is connected with a second end of the outer wall of the rack main body through the first bending part.

[0012] Preferably, the number of the flow-around passages is multiple, and multiple flow-around passages are arranged at intervals on the outer wall of the rack main body.

[0013] Preferably, the rack with flow-around passages further comprises a connecting part arranged at the bottom of the rack main body.

[0014] According to the second aspect of the utility model, a compressor is provided, wherein the compressor comprises the rack with flow-around passages as described above.

[0015] Preferably, the compressor further comprises a suction pipe, a movable and fixed disc assembly, a shell, a motor winding and an exhaust pipe, the movable and fixed disc assembly is arranged at the upper part of the rack with flow-around passages, the motor winding is arranged at the lower part of the rack with flow-around passages, and the suction pipe and the exhaust pipe are arranged at two ends of the shell respectively.

[0016] According to the rack with flow-around passages of the utility model, the flow path of the rotation guide of the gas can be located on the rack main body through the cooperation of the rack main body and the flow-around passage arranged on the outer wall of the rack main body, thereby the flow guide plate needed to be arranged in the large displacement compressor structure is omitted, the overall structure is compact, and the internal space of the compressor is reduced; even if the displacement of the compressor is increased, the problem of oil discharge difficulty of the compressor caused by the increase of the length and height difference of the pipeline is avoided. The rack with flow-around passages has simple overall structure and can directly cooperate with the internal structure of the original compressor, and when the internal layout of the large displacement compressor is performed, no additional parts are needed; through the special shape design of the flow-around passage, the oil separation effect is increased on the basis of the rotation guide, the oil discharge rate of the compressor is reduced, and the reliability of the large displacement compressor in the air conditioning system with long pipeline and high drop is increased.

[0017] In order to make the above objectives, characteristics and advantages of the present application more apparent, more comprehensible, the following will specifically describe a preferred embodiment in conjunction with the accompanying drawings, and make a detailed description as follows. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without paying creative labor on the basis of these drawings.

[0019] Figure 1 A structural schematic diagram of a rack with a flow-around passage according to an embodiment of the present application is shown;

[0020] Figure 2 A first front view of a rack with a flow-around passage according to an embodiment of the present application is shown;

[0021] Figure 3 A second front view of a rack with a flow-around passage according to an embodiment of the present application is shown;

[0022] Figure 4 A third front view of a rack with a flow-around passage according to an embodiment of the present application is shown;

[0023] Figure 5 A partial cross-sectional view of a compressor according to an embodiment of the present application is shown.

[0024] Reference signs: 1-rack main body; 2-flow-around passage; 201-vertical part; 202-flow-around part; 2031-first side wall; 2032-second side wall; 204-bottom wall; 205-rotation guide side; 206-inclined flow side; 207-guide main body part; 208-first bending part; 3-connection part; 4-suction pipe; 5-moving and stationary disc assembly; 6-housing; 7-motor winding; 8-exhaust pipe. DETAILED DESCRIPTION

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0026] In the description of the embodiments of this application, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0028] In the description of the embodiments of this application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0029] According to a first aspect of the present invention, a frame having a bypass flow path is provided, such as... Figures 1 to 4 As shown, the frame with a bypass flow path is used in a compressor. By installing this frame with a bypass flow path in the compressor, the compressor can maintain good oil separation performance while increasing its displacement. The frame with a bypass flow path includes a frame body 1 and a bypass flow path 2.

[0030] In the following description, reference will be made to Figures 1 to 4 The detailed structure of the frame body 1 and the flow-through passage 2 will be described in detail. In addition, referring to Figure 5 , Figure 5 The arrow shown in the figure indicates the flow direction of the fluid in the compressor in which the frame with the flow-through passage is installed.

[0031] As shown in Figure 1 and Figure 2 , in the embodiment, the frame body 1 as the main structure of the frame with the flow-through passage can be used to connect the following dynamic and static disc assembly 5. In order to facilitate the cooperation of the dynamic and static disc assembly 5 and the motor winding 7 of the following compressor, the frame body 1 can be formed as a cylindrical structure, the inside of which is hollow for accommodating the dynamic and static disc assembly 5. It can be understood that, as viewed from the top, the frame body 1 can be formed as a circular ring structure with a certain thickness, and the flow-through passage 2 is provided on the outer wall of the circular ring structure. In addition, a plurality of process round holes for auxiliary welding are provided on the outer wall of the cylindrical structure. A plurality of connecting holes are provided at the end face of the cylindrical structure for fixed connection with the dynamic and static disc assembly 5.

[0032] Further, the flow-through passage 2 is provided on the outer wall of the frame body 1, and the flow-through passage 2 can be formed as a groove-shaped structure for the flow of fluid. Since the frame with the flow-through passage is arranged inside the shell 6 (as shown in Figure 5 ) of the compressor, the gas can flow between the shell 6 and the groove-shaped flow-through passage 2. The flow-through passage 2 is annularly provided from the first end of the outer wall of the frame body 1 to the second end of the outer wall of the frame body 1. The frame body 1 needs to guide the fluid to move from one end of the shell 6 of the compressor to the other end, so the two ends of the flow-through passage 2 need to be arranged at the two ends of the frame body 1 respectively. Since the frame body 1 is formed as a cylindrical structure, the flow-through passage 2 is annularly provided on the outer wall of the frame body 1, which can be, for example, annularly provided on the outer wall of the cylindrical structure. At the same time, the guided fluid can rotate and collide with the following motor winding 7 to achieve oil-gas separation. In this way, the flow-through passage 2 for rotating flow guide is arranged on the frame body 1, which can effectively improve the structure of the frame body 1, so that the overall structure is compact, and the flow guide plate needed to be arranged in the large displacement compressor can be saved. The oil discharge rate of the compressor can be reduced while reducing the occupation of the additional parts to the internal space of the compressor, and the oil separation effect is increased.

[0033] The frame with bypass flow path, through the cooperation of the frame body 1 and the bypass flow path 2 set on the outer wall of the frame body 1, allows the flow path of the rotating gas to be located on the frame body 1. This eliminates the need for guide plates in large-displacement compressor structures, resulting in a compact overall structure and reducing the internal space occupied by the compressor. Even with an increase in compressor displacement, there will be no problem of oil discharge difficulties caused by the increase in pipeline length and height difference. The frame with bypass flow path has a simple overall structure and can be directly integrated with the internal structure of the existing compressor. No additional parts are needed when arranging the internal layout of a large-displacement compressor. Through the special shape design of the bypass flow path 2, the oil separation effect is increased on the basis of rotating flow guidance, reducing the oil discharge rate of the compressor, and increasing the reliability of large-displacement compressors in air conditioning systems with long piping and high elevation differences.

[0034] Preferably, such as Figures 2 to 5 As shown, in this embodiment, the two ends of the frame body 1 in the axial direction are the first end of the outer wall of the frame body 1 and the second end of the outer wall of the frame body 1. The axial direction can be understood as... Figures 2 to 4 The vertical direction of the compressor is also considered. The axial direction of the main frame 1 can also be understood as the vertical direction of the compressor. By positioning the two ends of the flow path 2 at the two ends in the vertical direction of the main frame 1, a superior fluid guiding effect can be achieved.

[0035] Preferably, such as Figure 2 and Figure 5 As shown, in this embodiment, the bypass path 2 may include a vertical section 201 and a bypass section 202. The vertical section 201 receives the high-pressure gas compressed by the moving and fixed disc assembly 5, while the bypass section 202 guides the high-pressure gas to the top of the motor winding 7 after rotational bypass. The gas rotates on the motor winding 7 and impacts the enameled wire of the motor winding 7, causing small droplets in the fluid to collect at the gaps between the turns and flow through the channel of the compressor housing 6 to the oil sump at the bottom of the motor. After oil-liquid separation, the gas with reduced oil content flows to the exhaust pipe 8 of the compressor, thereby greatly reducing the oil discharge rate of the compressor. It should be noted that the motor winding 7 at the top of the motor is made of enameled copper wire with dense gaps between turns and small holes, which facilitates gas impact and thus oil-gas separation.

[0036] Furthermore, the vertical part 201 extends axially from the first end of the outer wall of the frame body 1 toward the second end of the outer wall of the frame body 1, but the vertical part 201 does not penetrate the outer wall of the frame body 1 in the axial direction. This arrangement is to leave enough flow path for the flow-around part 202 to guide the fluid rotation, that is, the second end of the vertical part 201 is connected to the flow-around part 202.

[0037] Further, the first end of the flow-around portion 202 is connected to the vertical portion 201, and the second end of the flow-around portion 202 is arranged at the second end of the outer wall of the rack main body 1.

[0038] Preferably, as shown in Figure 3 and Figure 5 , in the embodiment, the vertical portion 201 can include a first side wall 2031, a second side wall 2032, and a bottom wall 204, in the front view as shown in Figure 3 , the first side wall 2031 and the second side wall 2032 are oppositely arranged at both sides of the bottom wall 204, wherein the second side wall 2032 is connected to the bottom wall 204, and the first side wall 2031 is not connected to the bottom wall 204 due to the communication of the flow-around portion 202.

[0039] Further, the flow-around portion 202 is connected to the first side wall 2031 and the bottom wall 204 at the upper and lower sides of the right end in Figure 3 , so that the flow-around portion 202 is in communication with the vertical portion 201. In this way, in the structure of Figure 3 , after the fluid enters the flow-around passage 2 through the vertical portion 201, it moves to the left and surrounds the arc-shaped outer wall of the rack main body 1 along the flow-around portion 202, so that the fluid generates rotation.

[0040] Preferably, as shown in Figure 3 and Figure 5 , in the embodiment, the flow-around portion 202 can include a rotation guide side 205 and an inclined flow side 206, and a gas flow passage is arranged between the rotation guide side 205 and the inclined flow side 206 for the passage of fluid, the rotation guide side 205 is close to the first end of the outer wall of the rack main body 1 relative to the inclined flow side 206, the rotation guide side 205 is connected to the first side wall 2031, and the inclined flow side 206 is connected to the bottom wall 204. The rotation guide side 205 is formed as an arc line for guiding the fluid to move up and down and generate rotation, and the inclined flow side 206 is formed as a straight line for guiding the fluid to move up and down, so that the fluid can be guided more optimally.

[0041] Preferably, as shown in Figure 4 and Figure 5 , in the embodiment, the rotation guide side 205 can include a guide main portion 207 and a first bending portion 208, the guide main portion 207 is connected to the first side wall 2031, and the guide main portion 207 is connected to the second end of the outer wall of the rack main body 1 through the first bending portion 208. The guide main portion 207 can have the same curvature as the outer wall of the rack main body 1 for assisting the fluid flow and generating rotation, and the first bending portion 208 can further guide the fluid to generate rotation, so that the gas discharged through the flow-around passage 2 generates a stronger rotating force, which in turn impacts the motor winding 7 described below, so that the oil and gas are separated.

[0042] Preferably, as Figure 1 As shown in the embodiment, the number of the flow-around passages 2 is multiple, and the multiple flow-around passages 2 are arranged at intervals on the outer wall of the rack body 1. In order to further improve the effect of guiding the fluid to rotate, the rack body 1 is provided with multiple flow-around passages 2, so that the fluid can be guided at different positions, thereby producing a more excellent rotating effect on the motor winding 7.

[0043] Preferably, as Figures 1 to 5 As shown in the embodiment, the rack with flow-around passages further comprises a connecting portion 3 arranged at the bottom of the rack body 1. The inside of the connecting portion 3 is used to accommodate bearings, crankshafts and the like, and plays a role of connecting the upper and lower portions.

[0044] The rack with flow-around passages, through the cooperation of the rack body and the flow-around passages arranged on the outer wall of the rack body, can make the flow path of the rotating flow of the gas located on the rack body, thereby eliminating the guide plate that needs to be arranged in the large-displacement compressor structure, making the overall structure compact and reducing the internal space occupied by the compressor; even if the displacement of the compressor is increased, the problem of oil discharge difficulty of the compressor caused by the increase of the length and height difference of the pipeline will not occur. The overall structure of the rack with flow-around passages is simple and can directly cooperate with the internal structure of the original compressor, and when the internal layout of the large-displacement compressor is performed, no additional parts are needed; through the special shape design of the flow-around passages, the oil separation effect is increased on the basis of the rotating flow, the oil discharge rate of the compressor is reduced, and the reliability of the large-displacement compressor in the air conditioning system with long pipelines and high drop is increased.

[0045] In addition, as Figure 5 As shown in the embodiment, according to the second aspect of the present application, a compressor is provided, which comprises the rack with flow-around passages, the suction pipe 4, the dynamic and static disc assembly 5, the shell 6, the motor winding 7 and the exhaust pipe 8 as described above, and the rack with flow-around passages, the suction pipe 4, the dynamic and static disc assembly 5, the motor winding 7 and the exhaust pipe 8 are all arranged in the inside of the shell 6, and the shell 6 can comprise an upper shell and a pipe shell connected to each other, and the gas flows in the inside of the upper shell and the inside of the pipe shell.

[0046] Specific flow path is: from the suction pipe 4 suction gas through the dynamic disk assembly 5 is compressed, forming a high pressure gas, and then through the dynamic disk assembly 5 gas passage to the upper shell, through the gap between the upper shell and the frame body 1 to the flow path 2, through the flow path 2 and the gas passage between the tube shell, fluid is guided to flow to the lower part of the compressor, while the guide through the flow path 2 produces rotation, the direction of rotation is the same as the direction of rotation of the compressor rotor; the rotating gas out of the frame body 1, flow to the motor winding 7 in the upper part of the motor, the rotating fluid in the motor winding 7 in the upper part of the motor rotates, and hits the enameled wire, small droplets in the fluid are collected at the gap between the turns, through the channel between the stator and the tube shell to the oil pool in the lower part of the motor, and finally the gas after oil gas separation to the exhaust pipe 8 is excluded from the compressor. In this process, by setting the frame with flow path in the compressor, the oil discharge rate of the compressor is greatly reduced, the oil gas separation effect is increased, and the reliability of the large displacement compressor is increased.

[0047] Finally, it should be noted that: the above-described embodiments, only for the specific embodiments of the present application, to illustrate the technical solutions of the present application, rather than limit it, the protection scope of the present application is not limited to this, although the prior art has been described in detail with reference to the foregoing embodiments, those skilled in the art should be understood: any familiar with the technical field of the technical personnel in the technical range of the present application, it still can be modified or easily thought of changes to the technical solutions recorded in the foregoing examples, or to replace some of the technical features of the equivalent; and these modifications, changes or replacement, do not make the corresponding technical solutions of the essence of the present application deviate from the spirit and scope of the technical solutions of the embodiments, all should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be said to the protection scope of the claims.

Claims

1. A housing having a flow passage, characterized by, The rack with the flow-around passage includes a rack body and a flow-around passage provided on an outer wall of the rack body, the flow-around passage being formed from a first end of the outer wall of the rack body to a second end of the outer wall of the rack body.

2. The rack with flow-through passages of claim 1, wherein, The two ends of the rack body in the axial direction are the first end of the outer wall of the rack body and the second end of the outer wall of the rack body.

3. The rack with flow-through passages of claim 2, wherein, The flow-around passage includes a vertical portion and a flow-around portion, the vertical portion extending from the first end of the outer wall of the rack body to the second end of the outer wall of the rack body in the axial direction, the first end of the flow-around portion being connected to the vertical portion, and the second end of the flow-around portion being provided on the second end of the outer wall of the rack body.

4. The rack with flow-through passages of claim 3, wherein, The vertical portion includes a first side wall, a bottom wall, and a second side wall, the first side wall and the second side wall being oppositely provided on two sides of the bottom wall, and the second side wall being connected to the bottom wall. The flow-around portion is connected to the first side wall and the bottom wall.

5. The rack with flow-through passages of claim 4, wherein, The flow-around portion includes a rotation guide side and an inclined flow side, a gas flow channel being provided between the rotation guide side and the inclined flow side, the rotation guide side being closer to the first end of the outer wall of the rack body relative to the inclined flow side, the rotation guide side being connected to the first side wall, and the inclined flow side being connected to the bottom wall.

6. The rack with flow-through passages of claim 5, wherein, The rotation guide side includes a guide body portion and a first bent portion, the guide body portion being connected to the first side wall, and the guide body portion being connected to the second end of the outer wall of the rack body through the first bent portion.

7. The rack with flow-through passages of claim 1, wherein, The number of the flow-around passages is multiple, and the multiple flow-around passages are formed at intervals on the outer wall of the rack body.

8. The rack with flow-through passages of claim 1, wherein, The rack with the flow-around passage further includes a connecting portion provided on a bottom of the rack body.

9. A compressor characterized by, The compressor includes the rack with the flow-around passage according to any one of claims 1 to 8.

10. The compressor of claim 9, wherein, The compressor further includes a suction pipe, a movable and stationary disk assembly, a shell, a motor winding, and a discharge pipe, the movable and stationary disk assembly being provided on an upper portion of the rack with the flow-around passage, the motor winding being provided on a lower portion of the rack with the flow-around passage, and the suction pipe and the discharge pipe being provided on two ends of the shell, respectively.

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