Suction flow path structure of compressor and compressor

Abstract

The utility model relates to a compressor technical field provides a kind of suction flow channel structure and compressor of compressor, wherein, first flow channel is opened in intermediate plate, for obtaining low-pressure refrigerant;First shell assembly is fixedly connected with intermediate plate and is enclosed into the first chamber for installing motor;Second shell is fixedly connected with intermediate plate and is enclosed into the second chamber for installing compression component, second shell is opened with the second inlet of intercommunication of second chamber;Suction connecting block is installed in the outer side wall of second shell, and suction connecting block is opened with second flow channel, and second flow channel is respectively intercommunicated first flow channel and second inlet;Suction sleeve one end is inserted in second inlet, and is connected with the suction port of compression component, and the other end is connected second flow channel. Avoid the problem that high-pressure side and low-pressure side intercommunication form leakage, improve the working efficiency and working reliability of pump body.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and in particular to a compressor intake channel structure and a compressor. Background Technology

[0002] Currently, there is a conventional rotary compressor that divides the compressor into a high-pressure section, an intermediate partition, and a low-pressure section. The upper bearing body of the compressor is located in the high-pressure section, and its end face is sealed to the end face of the intermediate partition. An air intake hole is provided radially near the center of the intermediate partition. Refrigerant enters the high-pressure side from the low-pressure side through the air intake hole in the intermediate partition and the air intake hole on the end face of the upper bearing.

[0003] The problem with the existing technology is that the suction port is located radially close to the center of the middle partition plate. When the middle partition plate is deformed by the pressure difference, it is easy to cause the suction port to fail to seal, which makes the high-pressure side of the compressor connected to the low-pressure side, affecting the working efficiency.

[0004] Therefore, there is an urgent need for a compressor suction channel structure and a compressor in order to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to propose a compressor suction channel structure and compressor, which sets the suction hole of the middle partition in a radially away position from the center, and changes the suction hole of the pump body from end face suction to radial suction, which can avoid the problem of leakage caused by the high pressure side and low pressure side connecting due to the deformation of the middle partition, and improve the working efficiency and working reliability of the pump body.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] The compressor's suction flow path structure includes:

[0008] The intermediate plate has a first flow channel for receiving low-pressure refrigerant.

[0009] The first housing assembly is fixedly connected to the aforementioned intermediate plate to form a first chamber for mounting the motor;

[0010] The second housing is fixedly connected to the intermediate plate to form a second chamber for installing the compression assembly, and the second housing is provided with a second air inlet.

[0011] An air intake connection block is installed on the outer side wall of the second housing. The air intake connection block has a second flow channel, which is connected to the first flow channel and the second air inlet.

[0012] The suction sleeve has one end inserted into the second air inlet and connected to the air inlet of the compression assembly, and the other end connected to the second flow channel.

[0013] As a preferred technical solution for the suction channel structure of the compressor, a third flow channel is provided in the first housing assembly. The third flow channel and the first chamber are separated into two independent cavities. One end of the third flow channel is used to obtain low-pressure refrigerant, and the other end is connected to the first flow channel.

[0014] As a preferred technical solution for the suction channel structure of the compressor, the first housing assembly includes a housing body and a cover plate. The housing body has a cylindrical structure. One end of the housing body is fixed to the intermediate plate. The end face of the other end of the housing body is provided with a groove and fixed to the cover plate. The third flow channel includes a first section and a second section that are interconnected. The cover plate and the inner sidewall of the groove form the first section. The second section is arranged along the sidewall of the housing body.

[0015] As a preferred technical solution for the suction channel structure of the compressor, a first air inlet is formed on the side wall of the first housing assembly near the intermediate plate, and low-pressure refrigerant enters the first chamber from the first air inlet; a first connecting port and a second connecting port are opened on the groove, the first connecting port connecting the first section and the first chamber respectively, and the second connecting port connecting the first section and the second section.

[0016] As a preferred technical solution for the suction channel structure of the above-mentioned compressor, the included angle θ between the first line connecting the first connecting port to the center of the shell body and the second line connecting the second connecting port to the center of the shell body satisfies: 90°≤θ≤80°.

[0017] As a preferred technical solution for the suction channel structure of the compressor, the end face of the third channel facing the intermediate plate is provided with a first exhaust port, and the end face of the first exhaust port is sealed to one side end face of the first channel.

[0018] As a preferred technical solution for the suction channel structure of the above-mentioned compressor, one end face of the second channel is sealed to the other end face of the first channel.

[0019] And / or, the other end face of the second flow channel is sealed to the end face of the second air inlet.

[0020] As a preferred technical solution for the suction channel structure of the compressor, the outer surface of the side wall of the second housing used to install the suction connecting block is a plane.

[0021] As a preferred technical solution for the suction channel structure of the above-mentioned compressor, the suction sleeve has a stepped structure, including a large-diameter section and a small-diameter section. The end face of the suction connecting block has a stepped structure, including a first end face and a second end face. The first end face is located inside the second end face. The second end face is fixed to the end face of the second air inlet. The small-diameter section is inserted into the suction port of the compression assembly. The large-diameter section of the suction sleeve is sandwiched between the first end face and the end face of the second air inlet.

[0022] As a preferred technical solution for the suction channel structure of the compressor, the small-diameter section is threadedly connected to the suction port of the compression assembly.

[0023] As a preferred technical solution for the suction channel structure of the compressor, the large-diameter section is sealed to the end face of the second air inlet.

[0024] As a preferred technical solution for the suction channel structure of the above-mentioned compressor, a side flow block protrudes outward from the side wall of the above-mentioned cylindrical structure, the side flow block is provided with the second section, extends along the axial direction of the above-mentioned cylindrical structure, a portion of the side wall of the side flow block is attached to the outer wall of the above-mentioned cylindrical structure, or is shared with the above-mentioned cylindrical structure; a portion of the side wall of the side flow block is connected tangentially along the above-mentioned cylindrical structure.

[0025] As a preferred technical solution for the suction channel structure of the above-mentioned compressor, part of the sidewall of the suction connecting block and the sidewall of the side flow block are located on the same generatrix.

[0026] A compressor is also provided, including the aforementioned motor, the aforementioned compression assembly, and the aforementioned compressor intake passage structure. The aforementioned compression assembly includes a crankshaft, a piston, and a cylinder. The aforementioned cylinder has a compression chamber and an intake port communicating with the aforementioned compression chamber. One end of the aforementioned crankshaft passes through the aforementioned intermediate plate and is connected to the aforementioned motor. The aforementioned piston is installed on the eccentric portion of the aforementioned crankshaft and is located within the aforementioned compression chamber.

[0027] The beneficial effects of this utility model are:

[0028] This utility model provides a compressor suction channel structure and a compressor, wherein an intermediate plate has a first flow channel for obtaining low-pressure refrigerant; a first housing assembly is fixedly connected to the intermediate plate to form a first chamber for installing a motor; a second housing is fixedly connected to the intermediate plate to form a second chamber for installing a compression assembly, and the second housing has a second air inlet communicating with the second chamber; a suction connecting block is installed on the outer wall of the second housing, and the suction connecting block has a second flow channel, which is connected to the first flow channel and the second air inlet respectively; one end of the suction sleeve is inserted into the second air inlet and connected to the suction port of the compression assembly, and the other end is connected to the second flow channel.

[0029] For example, the first housing assembly is the low-pressure side housing of the compressor, and the second housing is the high-pressure side housing of the compressor. The first housing assembly and the second housing are connected by an intermediate plate. External low-pressure refrigerant enters the first chamber through the first inlet, and then passes through the first outlet, the first flow channel, and the second flow channel in sequence before entering the compression assembly through the suction sleeve. The suction connection block places the suction passage of the compression assembly outside the second housing, avoiding leakage caused by the connection between the high-pressure side and the low-pressure side, and improving the working efficiency and reliability of the pump. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0031] Figure 1 This is an isometric view of the compressor provided in this embodiment of the present invention;

[0032] Figure 2 This is a top view of the compressor provided in this embodiment of the utility model;

[0033] Figure 3 yes Figure 2 Sectional view at point AA;

[0034] Figure 4 This is a schematic diagram of the structure of the intermediate plate provided in this embodiment of the utility model;

[0035] Figure 5 This is a schematic diagram of the shell body provided in this embodiment of the utility model. Figure 1 ;

[0036] Figure 6 This is a schematic diagram of the shell body provided in this embodiment of the utility model. Figure 2 ;

[0037] Figure 7 This is a schematic diagram of the structure of the second housing provided in an embodiment of the present invention;

[0038] Figure 8 This is a schematic diagram of the structure of the suction connecting block provided in this embodiment of the utility model;

[0039] Figure 9 This is a schematic diagram of the structure of the suction sleeve provided in this embodiment of the utility model.

[0040] In the picture:

[0041] 1. Intermediate plate; 11. First flow channel;

[0042] 2. First housing assembly; 2a. Housing body; 2b. Cover plate; 21. First chamber; 22. First air inlet; 23. First exhaust port; 24. Third flow channel; 241. First connecting port; 242. First section; 2421. Second connecting port; 243. Second section; 25. Groove;

[0043] 3. Second housing; 31. Second chamber; 32. Second air inlet; 33. Mounting platform;

[0044] 4. Suction connecting block; 41. Second flow channel; 42. First end face; 43. Second end face;

[0045] 5. Suction sleeve; 51. Large diameter section; 52. Small diameter section;

[0046] 61. Cylinder. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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 utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0051] like Figures 1 to 9 As shown, this utility model provides a compressor suction channel structure, including: an intermediate plate 1, a first housing assembly 2, a second housing 3, a suction connecting block 4, and a suction sleeve 5. The intermediate plate 1 has a first flow channel 11 for receiving low-pressure refrigerant; the first housing assembly 2 is fixedly connected to the intermediate plate 1 to form a first chamber 21 for mounting a motor; the second housing 3 is fixedly connected to the intermediate plate 1 to form a second chamber 31 for mounting a compression assembly, and the second housing 3 has a second air inlet 32 ​​communicating with the second chamber 31; the suction connecting block 4 is installed on the outer wall of the second housing 3, and the suction connecting block 4 has a second flow channel 41, which connects the first flow channel 11 and the second air inlet 32; one end of the suction sleeve 5 is inserted into the second air inlet 32 ​​and connected to the suction port of the compression assembly, and the other end is connected to the second flow channel 41.

[0052] For example, the first housing assembly 2 is the low-pressure side housing of the compressor, and the second housing 3 is the high-pressure side housing of the compressor. The first housing assembly 2 and the second housing 3 are connected by an intermediate plate 1. The external low-pressure refrigerant enters the first chamber 21 through the first air inlet 22, and then passes through the first exhaust port 23, the first flow channel 11 and the second flow channel 41 in sequence, and then enters the compression assembly through the suction sleeve 5. The suction connection block 4 places the suction passage of the compression assembly outside the second housing 3, avoiding the problem of leakage caused by the connection between the high-pressure side and the low-pressure side, and improving the working efficiency and reliability of the pump body.

[0053] Optionally, a third flow channel 24 is provided in the first housing assembly 2. The third flow channel 24 and the first chamber 21 are separated into two independent cavities. One end of the third flow channel 24 is used to obtain low-pressure refrigerant, and the other end is connected to the first flow channel 11.

[0054] For example, a third flow channel 24 is provided inside the first housing assembly 2. One end of the third flow channel 24 forms a first connecting port 241 on the side wall of the first housing assembly 2 away from the intermediate plate 1. The first connecting port 241 communicates with the first chamber 21. The other end of the third flow channel 24 forms a first exhaust port 23. A first air inlet 22 is provided on the side adjacent to the intermediate plate 1. With this configuration, external low-pressure refrigerant is drawn into the first chamber 21 through the first air inlet 22, and then enters the third flow channel 24 through the first connecting port 241, and enters the first flow channel 11 along the third flow channel 24. In this way, the flow direction of the refrigerant can be regulated, the occurrence of turbulence can be reduced, and the refrigerant can enter the compression assembly more stably.

[0055] Optionally, the first housing assembly 2 includes a housing body 2a and a cover plate 2b. The housing body 2a has a cylindrical structure. One end of the housing body 2a is fixed to the intermediate plate 1. The end face of the other end of the housing body 2a is provided with a groove 25 and is fixed to the cover plate 2b. The third flow channel 24 includes a first section 242 and a second section 243 that are interconnected. The cover plate 2b and the inner sidewall of the groove 25 form the first section 242. The second section 243 is arranged along the sidewall of the housing body 2a.

[0056] With this configuration, by dividing the first housing assembly 2 into a housing body 2a and a cover plate 2b, the first section 242 of the third flow channel 24 is easier to process.

[0057] Furthermore, the second section 243 of the third flow channel 24 extends axially along the crankshaft, thereby reducing the deflection of the low-pressure refrigerant and enabling it to enter the compression assembly quickly and stably, reducing the generation of turbulence.

[0058] Optionally, a first air inlet 22 is formed on the side wall of the first housing assembly 2 near the middle plate 1, and low-pressure refrigerant enters the first chamber 21 from the first air inlet 22; a first connecting port 241 and a second connecting port 2421 are opened on the groove 25, the first connecting port 241 connects the first section 242 and the first chamber 21 respectively, and the second connecting port 2421 connects the first section 242 and the second section 243.

[0059] Furthermore, the groove 25 is annular.

[0060] Furthermore, the middle area of ​​the groove 25 is hollow.

[0061] Furthermore, a motor is installed inside the shell body 2a, and the cover plate 2b is at a certain distance from the motor inside the shell body 2a.

[0062] Furthermore, the inner cavity of the first housing assembly 2 is cylindrical, and the outer portion of it is mostly columnar. The outer wall of the third flow channel 24 is planar along the tangent of the columnar body. Specifically, the outer wall of the third flow channel 24 includes two planes, which can optionally be perpendicular to each other.

[0063] Optionally, the angle θ between the first line connecting the first connection port 241 to the center of the shell body 2a and the second line connecting the second connection port 2421 to the center of the shell body 2a satisfies: 90°≤θ≤180°.

[0064] This configuration, with the angle between the first connecting port 241 and the second connecting port 2421, ensures a certain distance between the two ports, guaranteeing the flow path of the low-pressure refrigerant and reducing gas disturbance. During the flow process, the gas collides with the wall of the groove 25, which helps to separate the gas into gas and liquid, greatly reducing the liquid carryover during the intake of the compressor cylinder 61 and improving the performance and reliability of the compressor. In addition, the groove 25 and the second section 243 of the third flow channel 24 are located above and to the side of the motor in the first chamber 21, respectively, which has a beneficial effect on cooling the motor.

[0065] In one embodiment, when the compressor is installed, it is placed with a plane on the outer side wall of the third flow channel 24 as the bottom surface. At this time, when the position of the first connecting port 241 satisfies 90°≤θ≤180°, the liquid storage in the housing can be guaranteed.

[0066] Preferably, θ = 135°, and the first connecting port 241 is located at the highest point of the compressor, which can increase the liquid storage space inside the compressor housing and increase the liquid storage capacity.

[0067] Optionally, the first air inlet 22 and the first connecting port 241 overlap at least partially in the axial direction. This arrangement helps the low-pressure refrigerant to smoothly enter the third flow channel 24, ensuring suction efficiency.

[0068] Optionally, the end face of the third flow channel 24 facing the intermediate plate 1 is provided with a first exhaust port 23, and the end face of the first exhaust port 23 is sealed to one side end face of the first flow channel 11.

[0069] For example, a gasket is sandwiched between the end face of the first exhaust port 23 and one side end face of the first flow channel 11, or the gap between the two is filled by means of glue injection, so as to complete the sealing connection and improve the airtightness of the connection.

[0070] Optionally, one end face of the second flow channel 41 is sealed to the other end face of the first flow channel 11; and / or, the other end face of the second flow channel 41 is sealed to the end face of the second air inlet 32.

[0071] This configuration reduces the risk of leakage of the low-pressure refrigerant output from the first chamber 21 during its transport to the compression assembly.

[0072] It should be noted that "connection" includes, but is not limited to, connection through connectors, welding, etc.; "sealing" includes, but is not limited to, abutment contact sealing, sealing rings, gaskets, sealant, etc. between the two end faces.

[0073] Optionally, the outer surface of the side wall of the second housing 3 used for mounting the suction connection block 4 is flat.

[0074] For example, a portion of the peripheral sidewall of the second housing 3 forms an installation platform 33. The installation platform 33 is a plane for installing the suction connection block 4. In this way, the connection position between the suction connection block 4 and the installation platform 33 is relatively flat, making it easier to complete the sealing connection.

[0075] Optionally, the suction sleeve 5 has a stepped structure, including a large-diameter section 51 and a small-diameter section 52. The end face of the suction connecting block 4 has a stepped structure, including a first end face 42 and a second end face 43. The first end face 42 is located inside the second end face 43. The second end face 43 is fixed to the end face of the second air inlet 32. The small-diameter section 52 is inserted into the suction port of the compression assembly. The large-diameter section 51 of the suction sleeve 5 is sandwiched between the first end face 42 and the end face of the second air inlet 32.

[0076] This configuration ensures that the suction sleeve 5 is fixed relative to the suction connecting block 4 and the second housing 3, making it less prone to axial movement and radial sway.

[0077] Generally, there is a gap between the intake sleeve 5 and the second housing 3.

[0078] Optionally, the minor diameter section 52 is threaded to the intake port of the compression assembly.

[0079] For example, the small diameter section 52 of the suction sleeve 5 is provided with external threads, and the inner peripheral wall of the suction port of the compression component is provided with internal threads. The small diameter section 52 of the suction sleeve 5 is inserted into the suction port and threadedly connected to the compression component. This ensures that the suction sleeve 5 and the compression component are always connected and are not easy to loosen.

[0080] Optionally, a sealed connection is made between the end face of the large-diameter section 51 and the end face of the second air inlet 32. For example, a transition end face is formed between the large-diameter section 51 and the small-diameter section 52, and a gasket is sandwiched between the transition end face and the end face of the second air inlet 32, or the gap between the two is filled by means of injection, etc., to complete the sealed connection and improve the airtightness of the connection.

[0081] Preferably, the suction sleeve 5 and the second housing 3 are sealed by setting an O-ring or a copper gasket.

[0082] Optionally, a sideflow block protrudes outward from the sidewall of the cylindrical structure. The sideflow block contains a second section 243 extending axially along the cylindrical structure. Part of the sidewall of the sideflow block is attached to the outer wall of the cylindrical structure, or shared with the cylindrical structure. Part of the sidewall of the sideflow block is connected tangentially along the cylindrical structure. This configuration facilitates the machining of the first housing assembly 2 and reduces its size.

[0083] Optionally, part of the sidewall of the intake connection block 4 is located on the same generatrix as the sidewall of the sideflow block.

[0084] A compressor is also provided, including a motor, a compression assembly and the above-mentioned compressor intake passage structure. The compression assembly includes a crankshaft, a piston and a cylinder 61. The cylinder 61 has a compression chamber and an intake port communicating with the compression chamber. One end of the crankshaft passes through the intermediate plate 1 and is connected to the motor. The piston is installed on the eccentric part of the crankshaft and is located in the compression chamber.

[0085] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

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