Valve seat assembly and compressor

Abstract

The application discloses a valve seat assembly and a compressor. The valve seat assembly comprises a bearing seat, a limiting piece, a valve piece and a locking piece. The limiting piece is arranged on the bearing seat, the valve piece is arranged between the bearing seat and the limiting piece, and the locking piece comprises an end cap part and a rod part which are connected with each other. In the height direction of the bearing seat, the rod part sequentially passes through the bearing seat, the valve piece and the limiting piece, and one end of the rod part away from the end cap part is subjected to external force to form a limiting stop part which is stopped on the limiting piece. The predetermined gap is provided between the end cap part and the bearing seat. A buffer support part is arranged in the predetermined gap. When the one end of the rod part away from the end cap part is subjected to external force to form the limiting stop part, a support piece is arranged between the bearing seat and the end cap part to form the predetermined gap. The application solves the problem that the end faces of the rivet cap and the bearing seat part are extruded with each other in the process of applying pressure to the rivet rod in the prior art, and the rigidity of the rivet is reduced.

Description

Technical Field

[0001] This application relates to the field of compression device technology, and more specifically, to a valve seat assembly and a compressor. Background Technology

[0002] A rivet is a part with a head at one end and a shank at the other. Currently, when installing valve plates and limit plates on the bearing housing components of a compressor, the rivet is first placed on a tray with the head against the tray. Then, one side of the shank is passed through the bearing housing component, valve plate, and limit plate in sequence. Pressure is then applied to the shank to cause plastic deformation, allowing the rivet to press and fix the valve plate and limit plate to the bearing housing component. However, during the application of pressure to the shank, the head and the end face of the bearing housing component abut and squeeze against each other. The head is prone to deformation under the pressure of the end face of the bearing housing component, resulting in a decrease in the rigidity of the rivet. The end face of the bearing housing component may also experience localized stress concentration and deformation under the pressure of the head. Utility Model Content

[0003] The main objective of this application is to provide a valve seat assembly and a compressor to solve the problem in the prior art where the end face of the rivet head and the bearing housing component squeeze each other during the application of pressure to the rivet rod, resulting in a reduction in the rigidity of the rivet.

[0004] According to one aspect of this application, a valve seat assembly is provided, comprising:

[0005] Bearing housing;

[0006] A limiting member is provided on the bearing housing;

[0007] A valve plate, wherein the valve plate is disposed between the bearing housing and the limiting member;

[0008] A locking member, comprising an end cap and a rod connected to each other, wherein the rod passes sequentially through the bearing housing, the valve plate and the limiting member along the height direction of the bearing housing, and the end of the rod away from the end cap is subjected to external force to form a limiting stop portion that stops on the limiting member;

[0009] There is a predetermined gap between the end cap and the bearing seat;

[0010] A buffer support is provided within the predetermined gap; or...

[0011] When the end of the rod away from the end cap is subjected to an external force to form the limiting stop, the predetermined gap is formed by providing a support member between the bearing seat and the end cap.

[0012] Furthermore, the end cap has an outer flange protruding from the outer peripheral surface of the rod, and the outer flange has the predetermined gap with the bearing seat, and the buffer support is disposed within the predetermined gap.

[0013] Furthermore, the buffer support includes a pad, which is sleeved on the rod and located within the predetermined gap.

[0014] Furthermore, the gasket has a first shape and a second shape that deforms under the action of the external force, and when the gasket deforms from the first shape to the second shape, the maximum thickness of the gasket decreases.

[0015] Furthermore, along the height direction of the bearing housing, a notch is provided through the gasket, the notch having a first side and a second side arranged opposite to each other. When the gasket is in the first configuration, the first side and the second side are at least partially misaligned along the circumference of the gasket.

[0016] Furthermore, a protrusion is provided on the side of the end cap near the bearing seat, and the protrusion is located within the predetermined gap.

[0017] Furthermore, the protrusion includes a plurality of flexible rings, which are sequentially arranged around the outside of the rod and spaced radially apart.

[0018] Furthermore, the support member is provided with a groove, and when the limiting stop is formed at the end of the rod away from the end cap, the end cap is located in the groove, and the depth of the groove is not less than the height of the end cap along the height direction of the bearing seat.

[0019] Furthermore, along the height direction of the bearing housing, the predetermined clearance is h, where h ≤ 0.1 mm.

[0020] On the other hand, this application also provides a compressor including the aforementioned valve seat assembly.

[0021] In this application, the rod sequentially passes through the bearing housing, valve plate, and limiting member, thereby fixing the valve plate and limiting member onto the bearing housing. The end of the rod furthest from the end cap forms a limiting stop under external force, which stops against the limiting member, preventing the limiting member and valve plate from detaching from the bearing housing. During the process of the limiting stop being formed under external force at the end of the rod furthest from the end cap, a buffer support is positioned within a predetermined gap, preventing direct contact between the end cap and the bearing housing. The end cap does not press against the bearing housing, reducing the risk of deformation and improving its rigidity, thus enhancing the stability of the valve seat assembly. Furthermore, the buffer support disperses pressure, preventing localized stress concentration and deformation on the bearing housing end face, ensuring good structural rigidity of the bearing housing, and improving the overall reliability of the valve seat assembly.

[0022] When the end of the rod furthest from the end cap is subjected to external force to form a limiting stop, the valve seat assembly forms a predetermined gap by setting a support member between the bearing housing and the end cap. Maintaining this predetermined gap with the support member avoids direct pressing contact between the end cap and the bearing housing end face, effectively preventing deformation of the end cap due to compression, thus ensuring the rigidity and strength of the locking component. The support member can evenly distribute the external force, avoiding localized stress concentration on the bearing housing end face and preventing deformation. This application can precisely control the size of the predetermined gap through the support member, ensuring uniform force on the valve plate and limiting component after installation, improving fixing accuracy, reducing assembly errors caused by deformation, thereby optimizing the operational stability of the compressor's valve seat assembly, reducing the risk of failure caused by deformation, extending the service life of the compressor and valve seat assembly, and providing structural protection for the efficient and reliable operation of the compressor. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments of this application and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0024] Figure 1 This is a cross-sectional view of the valve seat assembly disclosed in this application;

[0025] Figure 2 This is a cross-sectional view (a) of the locking component disclosed in this application;

[0026] Figure 3 This is a cross-sectional view (II) of the locking component disclosed in this application;

[0027] Figure 4 This is a cross-sectional view (iii) of the locking component disclosed in this application.

[0028] The above figures include the following reference numerals:

[0029] 10. Bearing housing; 11. Vent hole; 20. Limiting component; 30. Valve plate; 40. Locking component; 41. End cap; 42. Rod; 420. Limiting stop; 43. Predetermined gap; 50. Buffer support; 51. Gasket; 52. Protrusion; 521. Flexible ring; 60. Support component; 61. Groove. Detailed Implementation

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0033] like Figures 1 to 4 As shown, this application provides a valve seat assembly. The valve seat assembly includes a bearing housing 10, a limiting member 20, a valve plate 30, and a locking member 40. The limiting member 20 is disposed on the bearing housing 10. The valve plate 30 is disposed between the bearing housing 10 and the limiting member 20. The locking member 40 includes an end cap 41 and a rod 42 connected to each other. Along the height direction of the bearing housing 10 (e.g., ...), the locking member 40 is positioned at the height of the bearing housing 10. Figure 1 (In the direction indicated by the middle arrow X), the rod 42 passes sequentially through the bearing housing 10, the valve plate 30, and the limiting member 20. The end of the rod 42 away from the end cap 41 is subjected to external force to form a limiting stop 420 that stops on the limiting member 20. A predetermined gap 43 exists between the end cap 41 and the bearing housing 10. A buffer support 50 is provided within the predetermined gap 43.

[0034] In this embodiment, the rod portion 42 passes sequentially through the bearing housing 10, the valve plate 30, and the limiting member 20, thereby fixing the valve plate 30 and the limiting member 20 onto the bearing housing 10. The end of the rod portion 42 away from the end cap portion 41 is subjected to external force to form a limiting stop portion 420, which stops against the limiting member 20, preventing the limiting member 20 and the valve plate 30 from falling off the bearing housing 10. During the process of the limiting stop portion 420 being formed by external force at the end of the rod portion 42 away from the end cap portion 41, the buffer support portion 50 is disposed within a predetermined gap 43, preventing direct contact between the end cap portion 41 and the bearing housing 10. The end cap portion 41 will not be squeezed against the bearing housing 10, reducing the risk of deformation of the end cap portion 41, improving the rigidity of the end cap portion 41, and enhancing the stability of the valve seat assembly. In addition, the buffer support 50 can disperse pressure, prevent local stress concentration and deformation on the end face of the bearing housing 10, ensure that the bearing housing 10 has good structural rigidity, and improve the overall reliability of the valve seat assembly.

[0035] Generally, an exhaust port 11 is provided through the bearing housing 10 along its height direction. The exhaust port 11 communicates with the compression chamber of the compressor cylinder, and the airflow in the compression chamber is discharged through the exhaust port 11. The compressor includes a housing and a motor and compressor pump body located within the housing. The compressor pump body mainly includes a crankshaft, a cylinder, and a bearing housing 10 connected to the cylinder to support the crankshaft. The bearing housing 10 prevents the rotating crankshaft from twisting or shifting, improving the rotational accuracy and stability of the crankshaft. The motor drives the crankshaft to rotate. The crankshaft has an eccentric part, which is connected to the piston in the cylinder through a connecting rod to drive the piston to rotate and compress the refrigerant gas entering the cylinder. Along the length direction of the valve plate 30, one end of the valve plate 30 is fixed to the bearing housing 10 by a locking member 40, and the other end of the valve plate 30 is positioned opposite to the exhaust port 11. When venting, the pressure inside the vent hole 11 is relatively high, creating a pressure difference on both sides of the valve plate 30. Under the influence of this pressure difference, the valve plate 30 rises to open the vent hole 11, allowing the gas to escape. The end of the limiting member 20 away from the locking member 40 is suspended, providing a certain lift space between the limiting member 20 and the vent hole 11. The side of the valve plate 30 away from the locking member 40 can move within this lift space. The valve plate 30 is typically a metal sheet structure with a certain degree of flexible deformation capability, allowing it to deform flexibly under the pressure of the airflow, thereby moving upwards to open the vent hole 11.

[0036] Among them, such as Figure 1 As shown, the end cap 41 has an outer flange protruding from the outer peripheral surface of the rod 42, and there is a predetermined gap 43 between the outer flange and the bearing seat 10. The buffer support 50 is disposed in the predetermined gap 43.

[0037] The end cap 41 has an outer flange protruding from the outer peripheral surface of the rod 42, creating a predetermined gap 43 between the end cap 41 and the bearing housing 10 and providing installation space for the buffer support 50. The buffer support 50, installed between the end cap 41 and the bearing housing 10, prevents direct contact between the end cap 41 and the bearing housing 10, effectively preventing the end cap 41 from being squeezed and deformed, thus ensuring high structural rigidity of the locking member 40. The buffer support 50 also prevents deformation of the end face of the bearing housing 10 due to localized stress concentration. The outer flange increases the contact area between the end cap 41 and the buffer support 50, dispersing the force on the end cap 41 and effectively reducing the risk of deformation of the end cap 41.

[0038] Specifically, the locking member 40 can be configured as a rivet. The rod portion 42 passes sequentially through the limiting member 20, the valve plate 30, and the bearing seat 10, fixing the three together. The rod portion 42 passes through the bearing seat 10, forming a first through hole in the bearing seat 10; the rod portion 42 passes through the valve plate 30, forming a second through hole in the valve plate 30; and the rod portion 42 passes through the limiting member 20, forming a third through hole in the limiting member 20. The end of the rod portion 42 furthest from the end cap 41 is deformed by external force into a wider limiting stop portion 420, the width of which is greater than the width of the third through hole. The limiting stop portion 420 stops at the limiting member 20. The limiting member 20, the valve plate 30, and the bearing seat 10 are confined between the limiting stop portion 420 and the end cap 41.

[0039] In one embodiment, such as Figure 2 As shown, the buffer support 50 includes a gasket 51, which is fitted onto the rod 42 and located within a predetermined gap 43. The gasket 51 separates the end cap 41 from the bearing housing 10, preventing the end faces of the end cap 41 and the bearing housing 10 from pressing against each other during installation. In this embodiment, the rigidity or elasticity of the gasket 51 effectively buffers external forces, reducing the risk of deformation of the end cap 41 due to compression, thereby ensuring good rigidity of the locking member 40. The gasket 51 also evenly distributes the pressure transmitted by the end cap 41 to the end face of the bearing housing 10, preventing deformation caused by localized stress concentration in the bearing housing 10. The installation of the gasket 51 onto the rod 42 is simple, and the size of the predetermined gap 43 can be flexibly controlled by selecting gaskets 51 of different thicknesses.

[0040] The washer 51 has a first form and a second form that deforms under external force. When the washer 51 deforms from the first form to the second form, the maximum thickness of the washer 51 decreases. During the deformation of the end of the rod 42 away from the end cap 41 under external force, the washer 51 is squeezed by the end cap 41 and the end face of the bearing seat 10. At this time, the maximum thickness of the washer 51 decreases. The washer 51 can absorb the squeezing effect through deformation, thereby reducing the force on the end cap 41 and the bearing seat 10 and reducing the risk of deformation of the end cap 41 and the bearing seat 10.

[0041] Along the height direction of the bearing housing 10, a notch is provided through the gasket 51, and the notch has a first side and a second side arranged opposite to each other. When the gasket 51 is in the first configuration, the first side and the second side are at least partially offset along the circumference of the gasket 51. When the gasket 51 is pressed by the end cap 41 and the end face of the bearing housing 10, the first side and the second side are pressed closer to each other, and the gasket 51 can effectively absorb the compression effect, thereby reducing the force on the end cap 41 and the bearing housing 10. The gasket 51 can be configured as a rigid structural component.

[0042] In one embodiment, such as Figure 3 As shown, a protrusion 52 is provided on the side of the end cap 41 near the bearing housing 10, and the protrusion 52 is located within a predetermined gap 43. During the deformation of the end of the rod 42 away from the end cap 41 under external force, the side of the protrusion 52 away from the end cap 41 abuts against the bearing housing 10, separating the end cap 41 from the bearing housing 10 and preventing direct contact. This prevents the end cap 41 from pressing against the bearing housing 10, reducing the risk of deformation and improving the rigidity of the end cap 41, thus enhancing the stability of the valve seat assembly. Furthermore, the protrusion 52 can distribute pressure, reducing localized stress concentration and deformation on the end face of the bearing housing 10, ensuring good structural rigidity of the bearing housing 10.

[0043] The protrusion 52 includes multiple flexible rings 521, which are sequentially arranged around the outside of the rod 42 and radially spaced. This spacing provides multi-level buffering for the end cap 41. When the end of the rod 42 away from the end cap 41 deforms under external force, the flexible rings 521 can undergo flexible deformation to provide buffering when they come into contact with the bearing housing 10, thereby reducing the force on the end cap 41 and the bearing housing 10. Each flexible ring 521 has an independent deformation space due to its spacing, allowing for sufficient elastic deformation to absorb the force. The multiple flexible rings 521 can more evenly distribute instantaneous loads, more effectively reducing the force on the end cap 41 and the bearing housing 10, ensuring high rigidity of the end cap 41.

[0044] In another embodiment, such as Figure 4 As shown, when the end of the rod 42 away from the end cap 41 is subjected to external force to form a limiting stop 420, a predetermined gap 43 is formed by providing a support member 60 between the bearing housing 10 and the end cap 41. When the end of the rod 42 away from the end cap 41 is subjected to external force to form a limiting stop 420, the valve seat assembly forms a predetermined gap 43 by providing a support member 60 between the bearing housing 10 and the end cap 41. By maintaining the predetermined gap 43 with the support member 60, direct pressing contact between the end cap 41 and the end face of the bearing housing 10 can be avoided, effectively preventing deformation of the end cap 41 due to pressing, thereby ensuring the rigidity and strength of the locking member 40. The support member 60 can evenly distribute the external force, avoid local stress concentration on the end face of the bearing housing 10, and prevent deformation of the end face of the bearing housing 10. This application can precisely control the size of the predetermined gap 43 through the support member 60, so that the valve plate 30 and the limiting member 20 are subjected to uniform force after installation, improve the fixing accuracy, reduce the assembly error caused by deformation, thereby optimizing the operating stability of the compressor valve seat assembly, reducing the risk of failure caused by deformation, extending the service life of the compressor and valve seat assembly, and providing structural protection for the efficient and reliable operation of the compressor.

[0045] The support member 60 is provided with a groove 61. When a limiting stop 420 is formed at the end of the rod 42 away from the end cap 41, the end cap 41 is located in the groove 61. The depth of the groove 61 along the height direction of the bearing seat 10 is not less than the height of the end cap 41. During the process of forming the limiting stop 420 at the end of the rod 42 away from the end cap 41 under the action of external force, the end cap 41 is placed in the groove 61 of the support member 60, so that the upper surface of the groove 61 abuts against the end face of the bearing seat 10, thereby forming a predetermined gap 43 between the end cap 41 and the bearing seat 10. In this embodiment, when an external force is applied to the locking member 40, the end face of the bearing seat 10 will not contact the end cap 41, and the end cap 41 will not squeeze against the bearing seat 10, reducing the risk of deformation of the end cap 41. This embodiment can also effectively prevent local stress concentration and deformation on the end face of the bearing seat 10.

[0046] In one embodiment, the predetermined gap 43 along the height direction of the bearing housing 10 is h, where h ≤ 0.1 mm. h can be set to one of the following: 0.01 mm, 0.02 mm, 0.03 mm, 0.04 mm, 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, or 0.1 mm. This predetermined gap 43 is sufficient to accommodate the buffer support 50 during the process of forming a limiting stop 420 at the end of the rod 42 away from the end cap 41 under external force. This predetermined gap 43 prevents the end face of the bearing housing 10 from directly contacting the end cap 41, while also ensuring good stability for the valve plate 30 and the limiting member 20. If h > 0.1 mm, the predetermined gap 43 will be too large, and the limiting member 20 and the valve plate 30 will move on the bearing seat 10, resulting in poor stability of the limiting member 20 and the valve plate 30. This will prevent the valve plate 30 from sealing the exhaust port and will also cause excessive noise when the valve plate 30 exhausts.

[0047] Specifically, during actual installation, a buffer support 50 can be installed within a predetermined gap 43 between the end cap 41 and the bearing housing 10 to reduce the risk of deformation of the end cap 41, thereby improving the rigidity of the locking member 40. In another embodiment, when an external force is applied to the end of the rod 42 to cause deformation, a predetermined gap 43 is formed by providing a support 60 between the bearing housing 10 and the end cap 41 to reduce the risk of deformation of the end cap 41. After the external force is removed, the locking member 40 forms a more stable base structure, and the locking member 40 is strengthened during plastic deformation. Subsequently, an external force can be applied to the end of the rod 42 again. At this time, the stress distribution of the end cap 41 is more uniform, and excessive deformation will not occur.

[0048] On the other hand, embodiments of this application also provide a compressor that includes the aforementioned valve seat assembly. Therefore, this compressor incorporates all the technical effects of the aforementioned valve seat assembly. Since the technical effects of the valve seat assembly have already been described in detail above, they will not be repeated here.

[0049] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0050] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0051] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A valve seat assembly, characterized in that, include: Bearing housing (10); A limiting member (20) is provided on the bearing seat (10); Valve plate (30), the valve plate (30) is disposed between the bearing seat (10) and the limiting member (20); Locking member (40), the locking member (40) includes an end cap (41) and a rod (42) connected to each other. Along the height direction of the bearing seat (10), the rod (42) passes through the bearing seat (10), the valve plate (30) and the limiting member (20) in sequence. The end of the rod (42) away from the end cap (41) is subjected to external force to form a limiting stop (420) that stops on the limiting member (20). There is a predetermined gap (43) between the end cap (41) and the bearing seat (10). A buffer support (50) is provided within the predetermined gap (43); or, When the end of the rod (42) away from the end cap (41) is subjected to external force to form the limiting stop (420), the predetermined gap (43) is formed by providing a support member (60) between the bearing seat (10) and the end cap (41).

2. The valve seat assembly according to claim 1, characterized in that, The end cap (41) has an outer flange protruding from the outer peripheral surface of the rod (42), and there is a predetermined gap (43) between the outer flange and the bearing seat (10), and the buffer support (50) is disposed in the predetermined gap (43).

3. The valve seat assembly according to claim 2, characterized in that, The buffer support (50) includes a pad (51), which is sleeved on the rod (42) and located within the predetermined gap (43).

4. The valve seat assembly according to claim 3, characterized in that, The gasket (51) has a first shape and a second shape that deforms under the action of the external force. When the gasket (51) deforms from the first shape to the second shape, the maximum thickness of the gasket (51) decreases.

5. The valve seat assembly according to claim 4, characterized in that, Along the height direction of the bearing housing (10), a notch is provided through the gasket (51), the notch having a first side and a second side arranged opposite to each other. When the gasket (51) is in the first form, the first side and the second side are at least partially misaligned along the circumference of the gasket (51).

6. The valve seat assembly according to claim 2, characterized in that, The end cap (41) has a protrusion (52) on the side near the bearing seat (10), and the protrusion (52) is located within the predetermined gap (43).

7. The valve seat assembly according to claim 6, characterized in that, The protrusion (52) includes a plurality of flexible rings (521), which are arranged sequentially around the outside of the rod (42) and at radial intervals along the flexible rings (521).

8. The valve seat assembly according to claim 1, characterized in that, The support member (60) is provided with a groove (61). When the limiting stop (420) is formed at the end of the rod (42) away from the end cap (41), the end cap (41) is located in the groove (61). Along the height direction of the bearing seat (10), the depth of the groove (61) is not less than the height of the end cap (41).

9. The valve seat assembly according to any one of claims 1 to 8, characterized in that, Along the height direction of the bearing housing (10), the predetermined gap (43) is h, where h ≤ 0.1 mm.

10. A compressor, characterized in that, Includes the valve seat assembly as described in any one of claims 1 to 9.

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