Bearing assembly, compressor and refrigeration apparatus

Abstract

The utility model provides a kind of bearing assembly, compressor and refrigeration equipment.The bearing assembly includes bearing, first valve piece, second valve piece and stopper;Bearing is provided with first exhaust hole;The first end of first valve piece is connected with bearing, the second end of first valve piece is free end, and it is covered in first exhaust hole;Second valve piece is set on the side of first valve piece away from bearing, the first end of second valve piece is contacted with the first end of first valve piece, the second end of second valve piece is free end, and the first end of second valve piece extends to the second end of second valve piece in the direction away from first valve piece;Stopper is set on the side of second valve piece away from first valve piece;Wherein, the thickness of first valve piece is greater than the thickness of second valve piece.The thickness of first valve piece is greater than the thickness of second valve piece, when compressor operates at higher speed, reduce the energy loss when compression cavity exhausts, improve the exhaust efficiency of compressor.

Description

Technical Field

[0001] This utility model relates to the field of compressor technology, and more specifically, to a bearing assembly, a compressor, and a refrigeration device. Background Technology

[0002] Currently, in related technologies, the compressor's discharge valve includes two layers of valve plates stacked together. This allows the discharge port on the bearing to be controlled at low and medium-high frequencies, respectively. However, when the compressor is running at medium-high frequencies, the refrigerant needs to overcome the pressure of the two layers of valve plates to open the discharge port, making it more difficult to open the compressor's discharge port and reducing the compressor's discharge efficiency. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this utility model proposes a bearing assembly.

[0005] The second aspect of this utility model provides a compressor.

[0006] The third aspect of this utility model proposes a refrigeration device.

[0007] In view of the above, the first aspect of this utility model provides a bearing assembly, including a bearing, a first valve plate, a second valve plate, and a limiter; the bearing is provided with a first vent hole; a first end of the first valve plate is connected to the bearing, and a second end of the first valve plate is a free end covering the first vent hole; a second valve plate is disposed on the side of the first valve plate away from the bearing, the first end of the second valve plate is in contact with the first end of the first valve plate, the second end of the second valve plate is a free end, and the second end of the second valve plate extends away from the first valve plate; a limiter is disposed on the side of the second valve plate away from the first valve plate; wherein, the thickness of the first valve plate is greater than the thickness of the second valve plate.

[0008] The bearing assembly provided in this application includes a bearing for supporting a rotating shaft, thereby ensuring the stability of a compressor equipped with the bearing assembly during operation. The bearing has a first exhaust port. The bearing assembly also includes a first valve plate and a second valve plate. A first end of the first valve plate is connected to the bearing, and a second end of the first valve plate is a free end covering the first exhaust port. A first end of the second valve plate is connected to the bearing, and a second end of the second valve plate is a free end. The first and second valve plates control the first exhaust port. When the compressor operates at a lower speed, the pressure inside the first exhaust port is higher than the pressure outside the first exhaust port, but the pressure difference is small. The first valve plate moves away from the first exhaust port, opening the first exhaust port and allowing exhaust. When the compressor operates at a higher speed, the pressure inside the first exhaust port is higher than the pressure outside the first exhaust port, and the pressure difference is larger. The first and second valve plates move away from the first exhaust port, opening the first exhaust port and allowing exhaust. By simultaneously controlling the first exhaust port with the first and second valve plates, the reliability of the first and second valve plates during compressor operation is improved.

[0009] The thickness of the first valve plate is greater than that of the second valve plate, making the second valve plate relatively thinner. When the compressor runs at a higher speed, the second valve plate responds more sensitively, the first exhaust port opens more promptly, the opening delay of the first exhaust port is reduced, and the pressure required to open the first exhaust port is reduced, thus reducing the difficulty of opening the first exhaust port, reducing energy loss during exhaust from the compression chamber, and improving the exhaust efficiency of the compressor.

[0010] The first end of the second valve plate contacts the first end of the first valve plate, and the second end of the second valve plate extends away from the first valve plate, creating a certain gap between the second ends of the first and second valve plates. By setting the relative extension directions of the first and second valve plates, and creating a gap between their second ends, the mating structure between the first and second valve plates is simplified, reducing the assembly difficulty and thus simplifying the assembly process and improving the assembly efficiency. Specifically, the first end of the second valve plate contacts the first end of the first valve plate, and the second end of the first valve plate has a gap, meaning there is a gap in a portion of the area between the first and second valve plates. When the compressor is running at a low speed, when the second end of the first valve plate moves a certain displacement away from the first exhaust port, the probability of the first valve plate contacting the second valve plate is small due to the gap between the second end of the first valve plate and the second valve plate. This reduces the probability of vibration and noise caused by the first valve plate hitting the second valve plate, and further reduces the vibration and noise of the compressor when running at low frequency.

[0011] By setting limiters to restrict the movement stroke of the first and second valve plates, permanent or excessive deformation of the first and second valve plates due to excessive movement stroke is reduced, thereby extending the service life of the first and second valve plates and enhancing their stability during operation.

[0012] In some technical solutions of this utility model, optionally, the first end of the first valve plate extends to the second end of the first valve plate in an arc shape; and / or the first end of the second valve plate extends to the second end of the second valve plate in an arc shape.

[0013] In this technical solution, the first valve plate and / or the second valve plate extend in an arc shape, which makes the first valve plate and the second valve plate have greater elasticity, thereby making the first valve plate and the second valve plate respond faster and improving the exhaust efficiency of the first exhaust port.

[0014] In some technical solutions of this utility model, optionally, the first end of the first valve plate extends linearly to the second end of the first valve plate and is inclined relative to the second valve plate; and / or the first end of the second valve plate extends linearly to the second end of the second valve plate and is inclined relative to the first valve plate.

[0015] In this technical solution, the first valve plate and / or the second valve plate extend linearly at an angle, which makes the first valve plate and the second valve plate have higher processing accuracy. This facilitates the control of the size of the gap between the second end of the first valve plate and the second valve plate, improves the consistency of the movement of the first valve plate and the second valve plate between different compressors, and thus improves the quality of the product.

[0016] In some technical solutions of this utility model, optionally, the length of the second valve plate is greater than or equal to the length of the first valve plate.

[0017] In this technical solution, the length of the second valve plate is greater than or equal to the length of the first valve plate, resulting in a shorter stroke for the first valve plate when opening the first exhaust port. This facilitates rapid reset of the first valve plate and further improves its response speed. Furthermore, the longer length of the second valve plate allows it to cooperate more effectively with the first valve plate, thereby improving the exhaust efficiency of the compressor during high-frequency operation.

[0018] In some technical solutions of this utility model, optionally, the number of second valve plates is multiple, and the multiple second valve plates are stacked.

[0019] In this technical solution, there are multiple second valve plates, which are stacked to allow the second valve plates to be adjusted according to the exhaust requirements of compressors with different displacements, thereby improving the applicability of the second valve plates.

[0020] In some technical solutions of this utility model, the first valve plate and the second valve plate may be an integral structure; or the first valve plate and the second valve plate may be separate structures.

[0021] In this technical solution, the first valve plate and the second valve plate are an integral structure, which makes it easier to assemble the first valve plate and the second valve plate onto the bearing.

[0022] The first valve plate and the second valve plate are separate structures. After processing, the first valve plate and the second valve plate do not need to be pre-connected. They can be directly fixed by the connector, which reduces the process cost required to assemble the first valve plate and the second valve plate.

[0023] In some technical solutions of this utility model, optionally, the first valve plate includes a first connecting part, a first transition part, and a first covering part; the first connecting part is connected to the bearing; the first transition part is connected to the first connecting part; the first covering part is connected to the first transition part and covers the first exhaust hole.

[0024] In this technical solution, the first connecting part, the first transition part, and the first covering part are connected sequentially. The first covering part covers the first exhaust port, thereby controlling the first exhaust port. Furthermore, the first connecting part is connected to the first covering part through the first transition part, allowing the first valve plate to adjust its stiffness through the first transition part. This makes the stiffness of the first valve plate more suitable for the exhaust from the first exhaust port, further improving the compressor's exhaust efficiency.

[0025] In some technical solutions of this utility model, optionally, the width of the first transition portion is smaller than the width of the first covering portion; and / or the width of the first transition portion is smaller than the width of the first connecting portion.

[0026] In this technical solution, the width of the first transition portion is smaller than the width of the first covering portion, reducing the stiffness of the first transition portion. This reduces the exhaust pressure required to drive the first valve plate, ensuring that even when the compressor operates at low speed and the pressure difference between the inside and outside of the compression chamber is small, the first valve plate can maintain a certain opening degree, reducing the probability of repeated opening and closing of the first valve plate. This, in turn, reduces the impact of the first valve plate on the bearing, thus reducing vibration and noise during the compressor's exhaust process. Similarly, the width of the first transition portion being smaller than the width of the first connecting portion also reduces the stiffness of the first transition portion, further reducing the impact of the first valve plate on the bearing and minimizing vibration and noise during the compressor's exhaust process.

[0027] By reducing the stiffness of the first transition section, the overall stiffness of the first valve plate is reduced, thereby reducing the pressure required for the first valve plate to open, reducing energy loss during exhaust from the compression chamber, and improving the exhaust efficiency of the compressor.

[0028] Optionally, in some technical solutions of this utility model, the first transition portion is provided with a through hole that penetrates the first transition portion along the thickness direction of the first transition portion.

[0029] In this technical solution, the first transition section is provided with a through hole, which reduces the rigidity of the first valve plate while ensuring the minimum thickness of the first valve plate, thereby ensuring the fatigue resistance of the first valve plate and extending the service life of the first valve plate.

[0030] Optionally, in some technical solutions of this utility model, the bearing assembly further includes a connector, which passes through the limiter, the second valve plate and the first valve plate, and is connected to the bearing.

[0031] In this technical solution, the bearing assembly also includes a connector, which passes through the limiter, the second valve plate and the first valve plate, and is connected to the bearing. The connector enables the installation and fixation of the limiter, the second valve plate and the first valve plate, thereby improving the stability of the limiter, the second valve plate and the first valve plate during the operation of the compressor.

[0032] The second aspect of this utility model provides a compressor that includes a bearing assembly as described in any of the above technical solutions, and thus the compressor possesses all the beneficial effects of the bearing assembly as described in any of the above technical solutions.

[0033] The third aspect of this utility model provides a refrigeration device, including a bearing assembly as described in any of the above technical solutions, or a compressor as described in any of the above technical solutions. Therefore, the refrigeration device has all the beneficial effects of the bearing assembly as described in any of the above technical solutions or the compressor as described in any of the above technical solutions.

[0034] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0035] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0036] Figure 1 This is a cross-sectional view of a bearing assembly according to an embodiment of the present invention;

[0037] Figure 2 An exploded view of a bearing assembly according to an embodiment of the present invention;

[0038] Figure 3 This is one of the assembly diagrams of a limiter, a first valve plate, and a second valve plate according to an embodiment of the present invention;

[0039] Figure 4This is a second assembly diagram of the limiter, the first valve plate, and the second valve plate according to an embodiment of the present utility model;

[0040] Figure 5 This is one of the schematic diagrams of a first valve plate according to an embodiment of the present invention;

[0041] Figure 6 This is a second schematic diagram of the first valve plate according to an embodiment of the present invention.

[0042] in, Figures 1 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0043] 10 Bearing assembly, 100 Bearing, 110 First vent hole, 120 Mounting groove, 200 First valve plate, 210 First connecting part, 220 First transition part, 222 Through hole, 230 First cover part, 300 Second valve plate, 310 Second connecting part, 320 Second transition part, 330 Second cover part, 500 Limiter, 600 Connector. Detailed Implementation

[0044] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0045] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0046] The following reference Figures 1 to 6 This invention describes a bearing assembly 10, a compressor, and a refrigeration device according to some embodiments of the present invention.

[0047] In one embodiment of this utility model, such as Figure 1 , Figure 2 and Figure 3As shown, a bearing assembly 10 is provided, including a bearing 100, a first valve plate 200, a second valve plate 300, and a limiter 500; the bearing 100 is provided with a first vent hole 110; a first end of the first valve plate 200 is connected to the bearing 100, and a second end of the first valve plate 200 is a free end, covering the first vent hole 110; the second valve plate 300 is disposed on the side of the first valve plate 200 away from the bearing 100, the first end of the second valve plate 300 contacts the first end of the first valve plate 200, the second end of the second valve plate 300 is a free end, and the second end of the second valve plate 300 extends away from the first valve plate 200; the limiter 500 is disposed on the side of the second valve plate 300 away from the first valve plate 200; wherein, the thickness H1 of the first valve plate 200 is greater than the thickness H2 of the second valve plate 300.

[0048] In this embodiment, the bearing assembly 10 includes a bearing 100, which supports the rotating shaft, thereby ensuring the stability of the compressor equipped with the bearing assembly 10 during operation. The bearing 100 is provided with a first exhaust port 110. The bearing assembly 10 also includes a first valve plate 200 and a second valve plate 300. The first end of the first valve plate 200 is connected to the bearing 100, and the second end of the first valve plate 200 is a free end covering the first exhaust port 110. The first end of the second valve plate 300 is connected to the bearing 100, and the second end of the second valve plate 300 is a free end. Thus, the first exhaust port 110 is controlled by the first valve plate 200 and the second valve plate 300. When the compressor operates at a lower speed, the pressure inside the first exhaust port 110 is higher than the pressure outside the first exhaust port 110, but the pressure difference between the inside and outside of the first exhaust port 110 is small. The first valve plate 200 moves away from the first exhaust port 110, opening the first exhaust port 110 and thus enabling exhaust. When the compressor operates at a higher speed, the pressure inside the first exhaust port 110 is higher than the pressure outside the first exhaust port 110, and the pressure difference between the inside and outside of the first exhaust port 110 is larger. The first valve plate 200 and the second valve plate 300 move away from the first exhaust port 110, opening the first exhaust port 110 and thus enabling exhaust. By simultaneously controlling the first exhaust port 110 with the first valve plate 200 and the second valve plate 300, the reliability of the first valve plate 200 and the second valve plate 300 during compressor operation is improved.

[0049] The thickness H1 of the first valve plate 200 is greater than the thickness H2 of the second valve plate 300, making the thickness H2 of the second valve plate 300 relatively thinner. When the compressor runs at a higher speed, the response of the second valve plate 300 is more sensitive, the opening of the first exhaust port 110 is more timely, the opening delay of the first exhaust port 110 is reduced, and the pressure required to open the first exhaust port 110 is reduced, reducing the difficulty of opening the first exhaust port 110, reducing the energy loss when the compressor discharges, and improving the discharge efficiency of the compressor.

[0050] The first end of the second valve plate 300 contacts the first end of the first valve plate 200. The second end of the second valve plate 300 extends away from the first valve plate 200, creating a certain gap between the second ends of the first and second valve plates 200. By setting the relative extension directions of the first and second valve plates 200, a certain gap is created between the second ends of the first and second valve plates 300, simplifying the mating structure between them, reducing the assembly difficulty, and thus simplifying the assembly process and improving the assembly efficiency of the first and second valve plates 200. Specifically, the first end of the second valve plate 300 contacts the first end of the first valve plate 200, and there is a gap between the second end of the first valve plate 200 and the second end of the second valve plate 300, that is, a portion of the area between the first valve plate 200 and the second valve plate 300 has a gap. When the compressor is running at a low speed, when the second end of the first valve plate 200 moves a certain displacement away from the first exhaust port 110, due to the gap between the second end of the first valve plate 200 and the second end of the second valve plate 300, the probability of the first valve plate 200 contacting the second valve plate 300 is small, thereby reducing the probability of vibration and noise caused by the first valve plate 200 impacting the second valve plate 300, and further reducing the vibration and noise of the compressor during low-frequency operation.

[0051] By setting a limiter 500 to restrict the movement stroke of the first valve plate 200 and the second valve plate 300, the permanent or excessive deformation of the first valve plate 200 and the second valve plate 300 due to excessive movement stroke is reduced, thereby extending the service life of the first valve plate 200 and the second valve plate 300 and enhancing the stability of the first valve plate 200 and the second valve plate 300 during operation.

[0052] Specifically, the extension of the first end to the second end of the second valve plate 300 away from the first valve plate 200 means that the first valve plate 200 and the second valve plate 300 are relatively far apart.

[0053] It can be that the first end of the first valve plate 200 extends towards the first exhaust port 110; or it can be that the first end of the second valve plate 300 extends away from the first exhaust port 110.

[0054] Alternatively, the first end of the first valve plate 200 to the second end of the first valve plate 200 may extend toward the first exhaust port 110, while the first end of the second valve plate 300 to the second end of the second valve plate 300 may also extend away from the first exhaust port 110.

[0055] The first end of the first valve plate 200 extends towards the first vent hole 110 from the first end to the second end, so that the second end of the first valve plate 200 can seal the first vent hole 110 more tightly, thereby improving the sealing effect of the first valve plate 200 on the first vent hole 110.

[0056] The first valve plate 200 and the second valve plate 300 are bent in opposite directions, so there is a certain gap between them in the exhaust direction.

[0057] Specifically, the bearing 100 is provided with a mounting groove 120, which is connected to the first exhaust port 110. The first exhaust port 110 extends from the bottom wall of the mounting groove 120 into the compression chamber.

[0058] The first valve plate 200, the second valve plate 300, and the limiter 500 constitute the basic structure of the valve plate assembly. The valve plate assembly is set in the mounting groove 120, thereby realizing the control of the first exhaust port 110.

[0059] The first valve plate 200, the second valve plate 300, and the limiter 500 are stacked in sequence.

[0060] Specifically, both the first valve plate 200 and the second valve plate 300 are elastic valve plates.

[0061] The second valve plate 300 is used to constrain the initial stroke of the first valve plate 200, and the limiter 500 is used to constrain the stroke of the second valve plate 300.

[0062] Specifically, compared with the scheme in the related art where the first exhaust port is controlled by a valve plate, the sum of the thickness H2 of the first valve plate 200 and the second valve plate 300 in the bearing assembly 10 provided in this application is the same as the thickness of a valve plate in the related art. The sum of the thickness H2 of the first valve plate 200 and the second valve plate 300 may also be less than the thickness of a valve plate in the related art, and the thickness H1 of the first valve plate 200 is greater than the thickness H2 of the second valve plate 300.

[0063] Furthermore, the thickness H1 of the first valve plate 200 can be 0.4 mm, and the thickness H2 of the second valve plate 300 can be 0.35 mm.

[0064] The thickness H1 of the first valve plate 200 can also be 0.3 mm, and the thickness H2 of the second valve plate 300 can also be 0.15 mm.

[0065] Furthermore, the thickness H1 of the first valve plate 200 is greater than or equal to 0.2 mm and less than or equal to 0.31 mm, which ensures the fatigue resistance of the first valve plate 200 and reduces the stiffness of the first valve plate 200. This allows the first valve plate 200 to maintain the exhaust state continuously when the compressor is running at low speed, reduces the frequency of opening and closing of the first valve plate 200, and reduces the vibration and noise of the compressor.

[0066] This embodiment provides a bearing assembly 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0067] like Figure 1 , Figure 2 and Figure 3 As shown, the first end of the first valve plate 200 extends in an arc shape to the second end of the first valve plate 200; and / or the first end of the second valve plate 300 extends in an arc shape to the second end of the second valve plate 300.

[0068] In this embodiment, the first valve plate 200 and / or the second valve plate 300 extend in an arc shape, which makes the first valve plate 200 and the second valve plate 300 have greater elasticity, thereby making the first valve plate 200 and the second valve plate 300 respond faster and improving the exhaust efficiency of the first exhaust port 110.

[0069] This embodiment provides a bearing assembly 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0070] The first valve plate 200 extends linearly from its first end to its second end and is inclined relative to the second valve plate 300; and / or the second valve plate 300 extends linearly from its first end to its second end and is inclined relative to the first valve plate 200.

[0071] In this embodiment, the first valve plate 200 and / or the second valve plate 300 extend in a linear inclined manner, which makes the first valve plate 200 and the second valve plate 300 have higher processing accuracy. This facilitates the control of the size of the gap between the second end of the first valve plate 200 and the second end of the second valve plate 300, improves the consistency of the movement of the first valve plate 200 and the second valve plate 300 between different compressors, and thus improves the quality of the product.

[0072] This embodiment provides a bearing assembly 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0073] like Figure 3 and Figure 4 As shown, the length L2 of the second valve plate 300 is greater than or equal to the length L1 of the first valve plate 200.

[0074] In this embodiment, the length L2 of the second valve plate 300 is greater than or equal to the length L1 of the first valve plate 200, resulting in a shorter stroke for the first valve plate 200 when opening the first exhaust port 110. This facilitates rapid reset of the first valve plate 200 and further improves its response speed. Furthermore, the longer length L2 of the second valve plate 300 allows for more effective cooperation with the first valve plate 200, thereby improving the exhaust efficiency of the compressor during high-frequency operation.

[0075] This embodiment provides a bearing assembly 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0076] There are multiple second valve plates 300, and multiple second valve plates 300 are stacked.

[0077] In this embodiment, there are multiple second valve plates 300, which are stacked to allow the second valve plates 300 to be adjusted according to the exhaust requirements of compressors with different displacements, thereby improving the applicability of the second valve plates 300.

[0078] This embodiment provides a bearing assembly 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0079] The first valve plate 200 and the second valve plate 300 are an integral structure; or the first valve plate 200 and the second valve plate 300 are separate structures.

[0080] In this embodiment, the first valve plate 200 and the second valve plate 300 are an integral structure, which makes it easier to assemble the first valve plate 200 and the second valve plate 300 onto the bearing 100.

[0081] The first valve plate 200 and the second valve plate 300 are separate structures. After processing, the first valve plate 200 and the second valve plate 300 do not need to be pre-connected. They can be directly fixed by the connector 600, which reduces the process cost required to assemble the first valve plate 200 and the second valve plate 300.

[0082] Specifically, the first valve plate 200 and the second valve plate 300 are an integral structure. For example, the first valve plate 200 and the second valve plate 300 are bonded together, or the first valve plate 200 and the second valve plate 300 are welded together.

[0083] This embodiment provides a bearing assembly 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0084] like Figure 2 , Figure 5 and Figure 6 As shown, the first valve plate 200 includes a first connecting portion 210, a first transition portion 220, and a first covering portion 230; the first connecting portion 210 is connected to the bearing 100; the first transition portion 220 is connected to the first connecting portion 210; the first covering portion 230 is connected to the first transition portion 220 and covers the first exhaust port 110.

[0085] In this embodiment, the first connecting portion 210, the first transition portion 220, and the first covering portion 230 are connected sequentially. The first covering portion 230 covers the first exhaust port 110, thereby enabling control of the first exhaust port 110. Furthermore, the first connecting portion 210 is connected to the first covering portion 230 via the first transition portion 220, allowing the first valve plate 200 to have its stiffness adjusted via the first transition portion 220. This makes the stiffness of the first valve plate 200 more suitable for the exhaust from the first exhaust port 110, further improving the compressor's exhaust efficiency.

[0086] This embodiment provides a bearing assembly 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0087] like Figure 2 , Figure 5 and Figure 6 As shown, the width W2 of the first transition portion 220 is smaller than the width W3 of the first covering portion 230; and / or the width W2 of the first transition portion 220 is smaller than the width W1 of the first connecting portion 210.

[0088] In this embodiment, the width W2 of the first transition portion 220 is smaller than the width W3 of the first covering portion 230, reducing the stiffness of the first transition portion 220. This reduces the exhaust pressure required to drive the first valve plate 200, ensuring that even when the compressor is running at low speed and the pressure difference between the inside and outside of the compression chamber is small, the first valve plate 200 can maintain a certain opening degree, reducing the probability of the first valve plate 200 repeatedly opening and closing. This reduces the impact of the first valve plate 200 on the bearing 100, thus reducing vibration and noise during the compressor's exhaust process. Similarly, the width W2 of the first transition portion 220 is smaller than the width W1 of the first connecting portion 210, further reducing the stiffness of the first transition portion 220 and reducing the impact of the first valve plate 200 on the bearing 100, thereby reducing vibration and noise during the compressor's exhaust process.

[0089] By reducing the stiffness of the first transition section 220, the overall stiffness of the first valve plate 200 is reduced, thereby reducing the pressure required for the first valve plate 200 to open, reducing energy loss during exhaust from the compression chamber, and improving the exhaust efficiency of the compressor.

[0090] Specifically, when the compressor operates at ultra-low speed, the refrigeration equipment is under extremely light load, the suction and discharge pressure difference is small, and the discharge pressure, discharge velocity, and flow rate are all very low. Therefore, the first valve 200 and / or the second valve 300 open early. Due to the small pressure difference between the inside and outside of the first valve 200 and / or the second valve 300, the force is very small, and the lift of the first valve 200 and / or the second valve 300 is very low. At this time, the first valve 200 plays a timely opening and closing role. Compared with the scheme that only sets one valve to control the first discharge port 110, and because the first valve 200 has lower rigidity, it can be fully opened and maintained at its maximum lift under these operating conditions until the end of discharge. This avoids severe chattering and prevents abnormal impact noise caused by continuous slapping against the bearing 100 and the first discharge port 110. In other words, it ensures that the first valve 200 can open promptly when the compressor operates at ultra-low speed, reducing discharge power consumption and improving the energy efficiency of the low-frequency compressor. At the same time, it avoids continuous vibration impact with the first exhaust port 110 of the bearing 100, eliminating abnormal noise. However, it should be noted that due to the small internal and external pressure difference, the maximum lift height of the first valve plate 200 is still less than the distance between the first valve plate 200 and the second valve plate 300, and will not make contact with the second valve plate 300. Therefore, the second valve plate 300 does not function.

[0091] As the compressor speed gradually increases, the load on the refrigeration equipment increases, the suction and discharge pressure difference increases, and the discharge flow rate increases. The pressure difference formed inside and outside the first valve plate 200 and / or the second valve plate 300 increases. The maximum lift of the first valve plate 200 begins to exceed the distance between the first valve plate 200 and the second valve plate 300, resulting in a higher lift. The first valve plate 200 will gradually begin to contact the second valve plate 300 and push the second valve plate 300 to produce a certain lift height. At this time, the first valve plate 200 and the second valve plate 300 begin to work together. When the compressor is running at medium to high speed, the pressure difference formed inside and outside the first valve plate 200 and / or the second valve plate 300 is large enough. The second valve plate 300 and the first valve plate 200 work together. At the beginning of the exhaust, both can reach the maximum opening state. At the end of the exhaust, due to the superposition effect of the first valve plate 200 and the second valve plate 300, under the action of combined stiffness, the first valve plate 200 and the second valve plate 300 can be ensured to close in time, preventing the high temperature and high pressure exhaust from flowing back into the pump body suction chamber. This reduces the exhaust power consumption of low frequency operation, improves the energy efficiency of low frequency compressor, and reduces the noise of exhaust valve flutter and impact.

[0092] The compressor employing the bearing assembly 10 provided in this application allows the first valve plate 200 to open and close more easily and promptly during ultra-low speed operation due to the small flow rate and low velocity, while the second valve plate 300 remains inactive. This avoids the continuous fluttering and striking of the bearing 100 (valve seat) by conventional high-rigidity valve plates, reduces the striking noise of the first valve plate 200, and simultaneously reduces exhaust power consumption, thereby improving compressor efficiency. When the compressor operates at medium to high speeds, both the first valve plate 200 and the second valve plate 300 function simultaneously, ensuring their reliability.

[0093] Furthermore, the ratio of the width W2 of the first transition portion 220 to the width W1 of the first connecting portion 210 is 0.6 to 0.8. This avoids reducing the fatigue resistance of the first valve plate 200 due to the width W2 of the first transition portion 220 being too small, and also avoids increasing the rigidity of the first valve plate 200 due to the width W2 of the first transition portion 220 being too large. This ensures the service life of the first valve plate 200 and reduces the probability of the first valve plate 200 repeatedly opening and closing during low-frequency operation of the compressor.

[0094] The ratio of the width W2 of the first transition portion 220 to the width W3 of the first covering portion 230 is 0.6 to 0.8. This avoids reducing the fatigue resistance of the first valve plate 200 due to the width W2 of the first transition portion 220 being too small, and also avoids increasing the rigidity of the first valve plate 200 due to the width W2 of the first transition portion 220 being too large. This ensures the service life of the first valve plate 200 and reduces the probability of the first valve plate 200 repeatedly opening and closing during low-frequency operation of the compressor.

[0095] Specifically, the ratio of the width W2 of the first transition portion 220 to the width W1 of the first connecting portion 210 can be 0.6.

[0096] The ratio of the width W2 of the first transition portion 220 to the width W1 of the first connecting portion 210 can also be 0.7.

[0097] The ratio of the width W2 of the first transition portion 220 to the width W1 of the first connecting portion 210 can also be 0.8.

[0098] The ratio of the width W2 of the first transition portion 220 to the width W3 of the first covering portion 230 can be 0.6.

[0099] The ratio of the width W2 of the first transition portion 220 to the width W3 of the first covering portion 230 can also be 0.7.

[0100] The ratio of the width W2 of the first transition portion 220 to the width W3 of the first covering portion 230 can also be 0.8.

[0101] Specifically, the width W2 of the first transition portion 220 is reduced by 20% to 40% relative to the width W1 of the first connecting portion 210.

[0102] The width W2 of the first transition portion 220 is reduced by 20% to 40% relative to the width W3 of the first covering portion 230.

[0103] This embodiment provides a bearing assembly 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0104] like Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, the first transition portion 220 is provided with a portion along the thickness direction of the first transition portion 220. Figure 1 (In the direction indicated by the middle arrow A) Through hole 222 penetrating the first transition section 220.

[0105] In this embodiment, the first transition portion 220 is provided with a through hole 222, which reduces the rigidity of the first valve plate 200 while ensuring the minimum thickness of the first valve plate 200, thereby ensuring the fatigue resistance of the first valve plate 200 and extending the service life of the first valve plate 200.

[0106] Specifically, the through hole 222 can be at least one of a circular hole, an elliptical hole, or an elongated hole.

[0107] The through hole 222 can also be an oblong hole, extending from one end of the first transition portion 220 near the first connecting portion 210 to one end of the first transition portion 220 near the first covering portion 230.

[0108] When the through hole 222 is a circular hole, the diameter of the through hole 222 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

[0109] When the through hole 222 is an elliptical hole, the major axis or minor axis of the through hole 222 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

[0110] When the through hole 222 is an elongated hole, the length or width of the through hole 222 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

[0111] When the through hole 222 can also be a waist-shaped hole, the length or width of the through hole 222 is greater than or equal to 0.5 mm and less than or equal to 1.5 mm.

[0112] Through holes 222 are symmetrically arranged on the first transition section 220.

[0113] This embodiment provides a bearing assembly 10, which, in addition to the technical features of the above embodiments, further includes the following technical features.

[0114] like Figure 1 and Figure 2 As shown, the bearing assembly 10 also includes a connector 600, which passes through the limiter 500, the second valve plate 300 and the first valve plate 200, and is connected to the bearing 100.

[0115] In this embodiment, the bearing assembly 10 further includes a connector 600, which passes through the limiter 500, the second valve plate 300, and the first valve plate 200, and is connected to the bearing 100. The connector 600 enables the installation and fixation of the limiter 500, the second valve plate 300, and the first valve plate 200, thereby improving the stability of the limiter 500, the second valve plate 300, and the first valve plate 200 during the operation of the compressor.

[0116] Specifically, the first connecting part 210 is fixed to the bearing 100 and fits against the surface of the bearing 100, the transition part is connected to the first connecting part 210, the first covering part 230 is connected to the transition part, and the first covering part 230 and the transition part can move relative to the first exhaust hole 110.

[0117] The second valve plate 300 includes a second connecting portion 310, a second transition portion 320, and a second covering portion 330, which are respectively disposed opposite to the first connecting portion 210, the first transition portion 220, and the first covering portion 230.

[0118] The first connecting part 210 fits into the second connecting part 310.

[0119] The second cover 330 is movable relative to the first exhaust port 110.

[0120] Specifically, connector 600 is a rivet or screw.

[0121] The limiter 500, the second valve plate 300 and the first valve plate 200 are provided with through holes 222 that extend along the axis. The connector 600 passes through the through holes 222. The bearing 100 is provided with mounting holes. After the connector 600 passes through the limiter 500, the second valve plate 300 and the first valve plate 200 in sequence, it is installed in the mounting holes.

[0122] The mounting holes are either rivet holes or threaded holes.

[0123] In one embodiment of the present invention, a compressor is provided, including a bearing assembly 10 as described in any of the above embodiments, and thus the compressor has all the beneficial effects of the bearing assembly 10 as described in any of the above embodiments.

[0124] Specifically, the compressor is a variable frequency compressor.

[0125] The compressor can be a single-cylinder, twin-cylinder, or multi-cylinder compressor.

[0126] In one embodiment of the present invention, a refrigeration device is provided, including a bearing assembly 10 as described in any of the above embodiments, or a compressor as described in any of the above embodiments. Therefore, the refrigeration device has all the beneficial effects of the bearing assembly 10 as described in any of the above embodiments or the compressor as described in any of the above embodiments.

[0127] Specifically, the refrigeration equipment includes refrigerators, air conditioners, freezers, or display cases.

[0128] In the claims, description, and accompanying drawings of this utility model, the term "plural" refers to two or more objects. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limitations on this utility model. The terms "connect," "install," "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood based on the specific circumstances described above.

[0129] In the claims, description, and drawings of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In the claims, description, and drawings of this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0130] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bearing assembly, characterized in that, include: The bearing is provided with a first vent hole; A first valve plate, the first end of which is connected to the bearing, and the second end of which is a free end, covering the first exhaust hole; The second valve plate is disposed on the side of the first valve plate away from the bearing. The first end of the second valve plate is in contact with the first end of the first valve plate, and the second end of the second valve plate is a free end. The second valve plate extends from the first end to the second end in a direction away from the first valve plate. A limiter is provided on the side of the second valve plate away from the first valve plate; The thickness of the first valve plate is greater than the thickness of the second valve plate.

2. The bearing assembly according to claim 1, characterized in that, The first end of the first valve plate extends in an arc shape from the first end to the second end of the first valve plate; and / or The second valve plate extends in an arc shape from its first end to its second end.

3. The bearing assembly according to claim 1, characterized in that, The first valve plate extends linearly from its first end to its second end and is inclined relative to the second valve plate; and / or The second valve plate extends linearly from its first end to its second end and is inclined relative to the first valve plate.

4. The bearing assembly according to claim 1, characterized in that, The length of the second valve plate is greater than or equal to the length of the first valve plate.

5. The bearing assembly according to claim 1, characterized in that, The number of the second valve plates is multiple, and the multiple second valve plates are stacked.

6. The bearing assembly according to claim 1, characterized in that, The first valve plate and the second valve plate are of an integral structure; or The first valve plate and the second valve plate are separate structures.

7. The bearing assembly according to claim 1, characterized in that, The first valve plate includes: A first connecting part is connected to the bearing; A first transition portion, which is connected to the first connecting portion; A first covering portion is connected to the first transition portion and covers the first exhaust port.

8. The bearing assembly according to claim 7, characterized in that, The width of the first transition portion is smaller than the width of the first covering portion; and / or The width of the first transition portion is smaller than the width of the first connecting portion.

9. The bearing assembly according to claim 7, characterized in that, The first transition portion is provided with a through hole extending through the first transition portion along the thickness direction of the first transition portion.

10. The bearing assembly according to any one of claims 1 to 9, characterized in that, Also includes: A connector is provided through the limiter, the second valve plate and the first valve plate, and is connected to the bearing.

11. A compressor, characterized in that, include: The bearing assembly as described in any one of claims 1 to 10.

12. A refrigeration device, characterized in that, include: The bearing assembly as described in any one of claims 1 to 10; or The compressor as described in claim 11.

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