Compressor back cover mechanism with flow stabilization function

Abstract

The utility model relates to compressor back cover technical field especially, it relates to a kind of compressor back cover mechanism with flow stability function, comprising: shell, including the sealing ring of outermost circle and the connecting ring of inner circle, through the air inlet channel being set in shell, air inlet channel is located between sealing ring and connecting ring;Shell is spaced apart and is set multiple connecting holes along circumference;Assembly plate subassembly, it is installed in one side of shell, and contact with sealing ring, connecting ring;Wherein, air inlet channel inner wall is smooth continuous curved surface, air inlet hole is obliquely set in air inlet channel interior, air inlet hole is connected air inlet channel and connecting ring interior space.This utility model is through the application above-mentioned back cover mechanism on compressor, reduce the possibility that screw is hit into air inlet channel, reduce product assembly quality problem, by adding oblique air inlet hole, increase flow capacity, improve the stability of flow.

Description

Technical Field

[0001] This utility model relates to the field of compressor rear cover technology, and in particular to a compressor rear cover mechanism with flow stabilization function. Background Technology

[0002] The compressor rear cover is a key component of the compressor, mainly used to seal the internal cavity of the compressor, support the valve plate assembly, and integrate the intake and exhaust channels. Its structural design directly affects the assembly accuracy, airflow stability, and operating efficiency of the compressor. During the operation of the compressor, the intake channel of the rear cover must ensure smooth gas flow and form a reliable seal with the housing and valve plate assembly to avoid gas leakage or pressure loss.

[0003] In existing technologies, the air intake channel of the compressor rear cover often adopts a stepped inner wall structure, and the channel position is too close to the surrounding screw holes. The stepped structure will cause turbulence and local pressure loss in the airflow within the channel, affecting the stability of the intake airflow. Moreover, the distance between the screw holes and the air intake channel is too small. When using automated screw assembly, the stepped structure is easily identified as a screw hole, causing the screw to be driven into the air intake channel. This results in incomplete screw fixing and blockage of the air intake channel, affecting flow stability, reducing assembly efficiency and product qualification rate.

[0004] Therefore, it is urgent to optimize the structure and layout of the intake channel to reduce the error rate of screw fixing and further improve the flow stability within the compressor. Utility Model Content

[0005] In view of at least one of the above technical problems, the present invention provides a compressor rear cover mechanism with flow stabilization function, which adopts the elimination of the step structure on the inner wall of the air intake channel, the oblique opening of the air intake hole to shorten the air intake path and increase the flow volume, and optimizes the housing layout to avoid interference between the air intake channel and the screw hole, so as to improve the product assembly quality and flow stability.

[0006] This utility model provides a compressor rear cover mechanism with flow stabilization function, including:

[0007] The housing includes an outermost sealing ring and an inner connecting ring, the connecting ring being recessed inward to form a main chamber; the housing has multiple through air intake channels located between the sealing ring and the connecting ring; the housing has multiple connecting holes spaced apart circumferentially.

[0008] The assembly plate is mounted on one side of the housing and contacts the sealing ring and the connecting ring;

[0009] The inner wall of the air intake channel is a smooth, continuous curved surface, and an air intake hole is obliquely opened inside the air intake channel, which connects the air intake channel and the main chamber.

[0010] In some embodiments of this utility model, an inward recess is formed between two adjacent connecting holes to form a receiving chamber.

[0011] In some embodiments of this utility model, a first reinforcing rib is fixedly connected between two adjacent connecting holes.

[0012] In some embodiments of this utility model, a second reinforcing rib is fixedly connected between each of the connecting holes and the connecting ring.

[0013] In some embodiments of this utility model, the housing is provided with a support base around the central axis, and a plurality of support columns are provided at intervals on the support base, the support columns abutting against the assembly plate assembly.

[0014] In some embodiments of this utility model, the support columns are evenly distributed around the support base.

[0015] In some embodiments of this utility model, a third reinforcing rib is fixedly connected between the support base and the connecting ring.

[0016] In some embodiments of this utility model, a vent pipe is provided on the side of the housing away from the assembly board, and communicates with the air intake channel.

[0017] In some embodiments of this utility model, the assembly plate includes a first gasket, an exhaust valve plate, a valve plate, an intake valve plate, and a second gasket arranged sequentially from near the sealing ring to away from the sealing ring.

[0018] In some embodiments of this utility model, a valve plate hole is provided on one side of the connecting ring, and a connecting rod is provided in the valve plate hole. The connecting rod passes through the first gasket, the exhaust valve plate, the valve plate, and the intake valve plate in sequence.

[0019] The beneficial effects of this utility model are as follows: By eliminating the stepped structure on the inner wall of the intake channel and adopting a smooth, continuous curved surface design, this utility model reduces airflow turbulence and flow resistance, and also reduces the possibility of screws being mistakenly driven into the intake channel, effectively reducing assembly errors caused by structural interference, minimizing the impact on product assembly quality, and improving the stability of intake airflow and the assembly qualification rate of the compressor; by opening the intake hole at an angle, the intake path is shortened, achieving the purpose of guiding the airflow into the internal space of the connecting ring in an orderly manner, effectively increasing the flow volume, improving gas flow efficiency and flow stability; by setting multiple reinforcing ribs, the overall structural strength and deformation resistance of the shell are enhanced, effectively ensuring the sealing performance under high-pressure conditions and improving the long-term operational reliability of the mechanism; through the layered sealing structure of the assembly plate components, the intake and exhaust processes are precisely controlled, effectively reducing gas backflow and leakage, and improving the working efficiency of the compressor. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the compressor rear cover mechanism with flow stabilization function in an embodiment of this utility model;

[0022] Figure 2 This is a structural schematic diagram of the compressor rear cover mechanism from another perspective in an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the housing structure in the compressor rear cover mechanism of this utility model embodiment;

[0024] Figure 4 This is a top view of the housing in the compressor rear cover mechanism of this utility model embodiment;

[0025] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at point AA;

[0026] Figure 6 This is an exploded view of the assembly board component in an embodiment of this utility model.

[0027] Reference numerals: 1. Housing; 11. Sealing ring; 12. Connecting ring; 121. Valve plate hole; 122. Connecting rod; 13. Main chamber; 14. Inlet passage; 141. Inlet hole; 15. Connecting hole; 151. Receiving chamber; 152. First reinforcing rib; 153. Second reinforcing rib; 16. Support base; 161. Support column; 162. Third reinforcing rib; 17. Vent pipe; 2. Assembly plate assembly; 21. First gasket; 22. Exhaust valve plate; 23. Valve plate; 24. Intake valve plate; 25. Second gasket. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] This utility model provides a method such as Figures 1 to 6 The compressor rear cover mechanism with flow stabilization function shown includes:

[0032] The housing 1 includes an outermost sealing ring 11 and an inner connecting ring 12. The connecting ring 12 is recessed inward to form a main chamber 13. Multiple through air intake channels 14 are provided on the housing 1, and the air intake channels 14 are located between the sealing ring 11 and the connecting ring 12. Multiple connecting holes 15 are provided on the housing 1 at intervals along the circumference.

[0033] The assembly board 2 is installed on one side of the housing 1, in contact with the sealing ring 11 and the connecting ring 12, and has several through holes corresponding to the connecting hole 15 and the main chamber 13, for controlling the compressor's intake and exhaust processes.

[0034] The inner wall of the air intake channel 14 is a smooth, continuous curved surface, and an air intake hole 141 is obliquely opened inside the air intake channel 14, which connects the air intake channel 14 and the main chamber 13.

[0035] The housing 1 employs a layered design with an outermost sealing ring 11 and an inner connecting ring 12, placing the air intake channel 14 between them. This design ensures reliable sealing during assembly of the board assembly 2 and, through the addition of an angled air intake hole 141, directly connects the air intake channel 14 to the main chamber 13 inside the connecting ring 12, effectively shortening the air intake path and guiding orderly airflow. The smooth, continuous curved inner wall reduces airflow turbulence and local pressure loss, and also avoids screw assembly errors caused by the stepped inner wall of the air intake channel 14 being too close to the connecting hole 15 where screws need to be driven in, thus preventing screw misalignment. Injecting into the intake channel 14 not only damages the housing 1, but also affects the flow of gas and the fixing effect of the screws. This optimized structure avoids interference between the intake channel 14 and the connecting hole 15. Moreover, the slanted intake hole 141 fundamentally avoids the risk of structural interference during screw assembly and increases the flow of air laterally. Through structural optimization, a comprehensive effect of improving airflow stability and assembly quality is achieved. It not only solves the flow efficiency problem caused by the stepped structure, but also eliminates the assembly error caused by hole interference, and significantly improves the flow stability and product qualification rate of the compressor rear cover mechanism.

[0036] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, the two adjacent connecting holes 15 are recessed inward to form a receiving chamber 151, thereby expanding the internal volume without increasing the overall size of the housing 1, providing a larger buffer space for gas flow, reducing pressure loss caused by excessive airflow speed, and further reducing turbulence in the main chamber 13 by adding the oblique air inlet 141 and the smooth curved air inlet channel 14, making the airflow distribution more uniform. Together with the assembly board 2, it effectively improves the compressor's control accuracy for the intake and exhaust processes.

[0037] In some embodiments of this utility model, such as Figure 4 As shown, a first reinforcing rib 152 is fixedly connected between two adjacent connecting holes 15 to form a rigid support structure, which effectively disperses the local stress of the connecting holes 15 when they are assembled, tightened or under working pressure, and avoids deformation or breakage of the shell 1 material thinning area caused by the recessed design of the receiving chamber 151; while ensuring the volume of the main chamber 13 to improve the flow effect, the mechanical strengthening effect of the rib maintains the overall rigidity of the shell 1 and prevents the risk of sealing failure caused by the deformation of the shell 1.

[0038] In some embodiments of this utility model, such as Figure 4As shown, each connecting hole 15 is fixedly connected to the connecting ring 12 with a second reinforcing rib 153. The connecting hole 15 serves as a key fixing point between the assembly plate 2 and the housing 1. The second reinforcing rib 153 forms a rigid support bridge between the two, which can effectively transmit and disperse the axial force generated when the connecting hole 15 is assembled and tightened, and prevent the connecting ring 12 from deforming due to excessive local stress. At the same time, in conjunction with the first reinforcing rib 152 supporting the adjacent connecting holes 15 in different directions, a crisscrossing reinforcement system is formed, which further improves the deformation resistance of the housing 1 under high pressure conditions, solves the problem of insufficient strength of single-point connection, and ensures the stability of long-term operation through the improvement of overall rigidity.

[0039] In some embodiments of this utility model, such as Figure 3 and Figure 4 As shown, a support base 16 is provided around the central axis of the housing 1, and multiple support columns 161 are provided at intervals on the support base 16. The support base 16 abuts against the assembly plate assembly 2. When the assembly plate assembly 2 is fixed only through the outer peripheral connection hole 15, the central area is prone to uneven stress due to lack of direct support, which may lead to vibration or sealing failure. By setting the support base 16 and support columns 161 abutting against the assembly plate assembly 2 at the center of the housing 1, the support columns 161 can effectively counteract the deformation trend of the assembly plate assembly 2 under gas pressure through axial clamping action, avoiding bulging caused by the central area being suspended. At the same time, with the bolt fixing of the outer peripheral connection hole 15, a multi-point uniform stress structure is formed, reducing local stress concentration.

[0040] Based on the above embodiments, the support columns 161 are evenly distributed around the support base 16, forming a ring support array along the inner side of the assembly plate assembly 2. This allows each support point to simultaneously disperse radial force when the assembly plate assembly 2 is subjected to gas pressure or vibration, avoiding stress concentration caused by local support and effectively suppressing the eccentric deformation of the assembly plate assembly 2. At the same time, the evenly distributed interval space can cooperate with the through hole of the assembly plate assembly 2 and the non-sealed structure of the main chamber 13. This not only does not obstruct the flow path of gas through the main chamber 13 and the through hole, but also strengthens the vibration resistance of the central area of ​​the shell 1 through symmetrical support. Combined with the integrated design of the support base 16 and the shell 1, and the outer reinforcing rib structure, this forms a double guarantee, ensuring the balance between efficient and stable airflow and structural stability of the compressor rear cover.

[0041] In some embodiments of this utility model, such as Figure 4As shown, a third reinforcing rib 162 is fixedly connected between the support base 16 and the connecting ring 12. The support base 16 serves as the mounting base for the support column 161, and the connection strength between it and the connecting ring 12 directly determines the deformation resistance of the central support system. Through the rigid connection along the third reinforcing rib 162, the torque and shear force between the support base 16 and the connecting ring 12 can be effectively transmitted, avoiding loosening or deformation of the connection due to vibration. At the same time, in conjunction with the axial and circumferential strengthening effects of the first and second reinforcing ribs 153, the fatigue resistance of the shell 1 under complex working conditions is further improved. In addition, the setting of the third reinforcing rib 162 can optimize the stress distribution around the support base 16, dispersing the axial force transmitted by the assembly plate 2 to the connecting ring 12 through the reinforcing rib, reducing the stress concentration at the root of the support base 16.

[0042] In some embodiments of this utility model, such as Figure 2 As shown, a vent pipe 17 is provided on the side of the housing 1 away from the assembly plate 2, which is connected to the air intake channel 14. The vent pipe 17 is arranged on the back of the housing 1 away from the internal core support structure such as the support column 161 and the reinforcing rib, which provides sufficient operating space for the connection of external pipelines. At the same time, it can be used as a connector for independent auxiliary external airflow pipeline access. Its position design can be flexibly adapted according to the actual pipeline route, which facilitates the introduction of external gas into the compressor.

[0043] In some embodiments of this utility model, such as Figure 6 As shown, the assembly plate 2 includes a first gasket 21, an exhaust valve plate 22, a valve plate 23, an intake valve plate 24, and a second gasket 25 arranged sequentially from near the sealing ring 11 to away from the sealing ring 11. The first gasket 21, the valve plate 23, and the second gasket 25 are provided with corresponding through holes for gas flow, corresponding to the receiving chamber 151, the connecting hole 15, the main chamber 13, and the portion between the main chamber 13 and the connecting ring 12.

[0044] The first gasket 21 is designed to be inclined and recessed in the part corresponding to the receiving chamber 151, so that this part of the first gasket 21 is not completely pressed against the exhaust valve plate 22 in the assembly plate 2, leaving space for the exhaust valve plate 22 to exhaust.

[0045] The exhaust valve plate 22 is fixed on the first gasket 21. The exhaust valve plate 22 has through holes in the main chamber 13 and the space between the main chamber 13 and the connecting ring 12. When the exhaust is not in the exhaust state, the exhaust valve plate 22 is attached to the valve plate 23, and the spring plate extended from the exhaust valve plate 22 closes the through hole of the corresponding receiving chamber 151 to prevent gas flow. When exhaust is required, the spring plate of the exhaust valve plate 22 sinks and extends into the sinking part of the first gasket 21, so that the through hole of the corresponding receiving chamber 151 is opened and gas flows.

[0046] Through holes are provided on the intake valve plate 24 corresponding to the receiving chamber 151, the connecting hole 15, and the main chamber 13. Spring pieces extend from the main chamber 13 of the valve plate 23 and the part between the main chamber 13 and the connecting ring 12 to block the flow of gas. When intake is required, the spring pieces of the intake valve plate 24 deform upward, allowing the through holes to allow the gas to flow and perform intake work.

[0047] Based on the above embodiments, such as Figure 4 As shown, a valve plate hole 121 is provided on one side of the connecting ring 12, and a connecting rod 122 is provided in the valve plate hole 121. The connecting rod 122 passes through the first gasket 21, the exhaust valve plate 22, the valve plate 23 and the intake valve plate 24 in sequence, forming a rigid through constraint to ensure the coaxiality and structural integrity of the multi-layer components and avoid misalignment of the valve plate and the through hole caused by cumulative assembly errors. At the same time, the rigid support and compression effect of the connecting rod 122 strengthens the interlayer fit, improves the sealing reliability in conjunction with the gasket, disperses the opening and closing impact force of the valve plate to reduce stress concentration, extends the component life, and works with the layered valve plate structure to ensure the dynamic response stability of the air valve.

[0048] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A compressor rear cover mechanism with flow stabilization function, characterized in that, include: The housing (1) includes an outermost sealing ring (11) and an inner connecting ring (12), the connecting ring (12) being recessed inward to form a main chamber (13); the housing (1) has multiple through air intake channels (14) located between the sealing ring (11) and the connecting ring (12); the housing (1) has multiple connecting holes (15) spaced apart circumferentially; The assembly plate assembly (2) is installed on one side of the housing (1) and contacts the sealing ring (11) and the connecting ring (12); The inner wall of the air intake channel (14) is a smooth and continuous curved surface, and an air intake hole (141) is obliquely opened inside the air intake channel (14). The air intake hole (141) connects the air intake channel (14) and the main chamber (13).

2. The compressor rear cover mechanism with flow stabilization function according to claim 1, characterized in that, An inward recess is formed between two adjacent connecting holes (15) to form a receiving chamber (151).

3. The compressor rear cover mechanism with flow stabilization function according to claim 1, characterized in that, A first reinforcing rib (152) is fixedly connected between two adjacent connecting holes (15).

4. The compressor rear cover mechanism with flow stabilization function according to claim 1, characterized in that, Each of the connecting holes (15) is fixedly connected to the connecting ring (12) with a second reinforcing rib (153).

5. The compressor rear cover mechanism with flow stabilization function according to claim 1, characterized in that, The housing (1) is provided with a support base (16) around its central axis, and a plurality of support columns (161) are provided at intervals on the support base (16), and the support columns (161) abut against the assembly plate assembly (2).

6. The compressor rear cover mechanism with flow stabilization function according to claim 5, characterized in that, The support columns (161) are evenly distributed around the support base (16).

7. The compressor rear cover mechanism with flow stabilization function according to claim 5, characterized in that, A third reinforcing rib (162) is fixedly connected between the support base (16) and the connecting ring (12).

8. The compressor rear cover mechanism with flow stabilization function according to claim 1, characterized in that, A vent pipe (17) is provided on the side of the housing (1) away from the assembly board (2), and is connected to the air intake channel (14).

9. The compressor rear cover mechanism with flow stabilization function according to claim 1, characterized in that, The assembly plate (2) includes a first gasket (21), an exhaust valve plate (22), a valve plate (23), an intake valve plate (24), and a second gasket (25) arranged sequentially from the side closest to the sealing ring (11) to the side furthest from the sealing ring (11).

10. The compressor rear cover mechanism with flow stabilization function according to claim 9, characterized in that, A valve plate hole (121) is provided on one side of the connecting ring (12), and a connecting rod (122) is provided in the valve plate hole (121). The connecting rod (122) passes through the first gasket (21), the exhaust valve plate (22), the valve plate (23), and the intake valve plate (24) in sequence.

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