Bearing assembly, compressor and refrigeration apparatus

Abstract

The utility model discloses a bearing assembly, compressor and refrigeration plant, bearing assembly includes: bearing, and the bearing has the exhaust hole on, and the lift limiter and the bearing are towards each other's surface and are equipped with the boss on at least one, and the boss is located the one end of lift limiter and is away from the exhaust hole, exhaust valve piece, and exhaust valve piece is located between bearing and lift limiter, and limit valve piece, and limit valve piece is located between exhaust valve piece and lift limiter and is spaced apart and is arranged with exhaust valve piece, and the one end of exhaust valve piece and limit valve piece away from the exhaust hole is clamped between the boss and bearing or between the boss and lift limiter, and the one end of another of exhaust valve piece and limit valve piece away from the exhaust hole is connected with bearing or lift limiter and is located the side of boss and is towards the exhaust hole. The utility model discloses can give attention to the demand of compressor low frequency and high frequency operation simultaneously. In addition, reduce the manufacturing cost and simplify the assembly procedure, improve production efficiency.

Description

Technical Field

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

[0002] In related technologies, refrigeration equipment such as air conditioners use a single-layer discharge valve in their rotary compressors. When the compressor chamber pressure is higher than the system condensing pressure, the valve opens to discharge, overcoming the spring force of the valve. When the pressure decreases, the valve closes. Compressors require the discharge valve to have low stiffness at low frequencies for rapid opening, while at high frequencies it needs high stiffness for rapid rebound and closure. Conventional compressors' single-layer discharge valves have only a fixed stiffness, exhibiting good response characteristics in the mid-frequency range of compressor operation, but showing a delayed response at lower and higher operating frequencies.

[0003] When the compressor operates at low frequency and low pressure difference, the exhaust valve plate will repeatedly open and close due to excessive stiffness during the exhaust process. During this process, the vibration of the exhaust valve plate itself and the impact on the valve seat will generate noise. When the compressor operates at high frequency and high pressure difference, the exhaust valve plate will be relatively stiff during the exhaust process, and will close late after the exhaust is completed, causing a decrease in cooling capacity and performance. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a bearing assembly that can simultaneously meet the needs of both low-frequency and high-frequency operation of the compressor, and is simple to assemble and has high production efficiency.

[0005] This utility model also proposes a compressor, which includes the above-described bearing assembly.

[0006] This utility model also proposes a refrigeration device, which includes the compressor described above.

[0007] A bearing assembly according to an embodiment of the present invention includes: a bearing having an exhaust port; a lift limiter, one end of which is connected to the bearing, and the other end extending toward the exhaust port and inclined in a direction away from the bearing; at least one of the surfaces of the lift limiter and the bearing facing each other has a boss, the boss being located at the end of the lift limiter opposite to the exhaust port; an exhaust valve plate, the exhaust valve plate being located between the bearing and the lift limiter and one end covering the exhaust port; a limit valve plate, the limit valve plate being located between the exhaust valve plate and the lift limiter and spaced apart from the exhaust valve plate; one of the exhaust valve plate and the limit valve plate having its end opposite to the exhaust port sandwiched between the boss and the bearing or between the boss and the lift limiter; the other of the exhaust valve plate and the limit valve plate having its end opposite to the exhaust port connected to the bearing or the lift limiter and located on the side of the boss facing the exhaust port.

[0008] According to the bearing assembly of this utility model embodiment, by providing an exhaust valve plate and a limiting valve plate, with the limiting valve plate located on the side of the exhaust valve plate away from the bearing and spaced apart from it, the requirements for quickly opening the exhaust port during low-frequency operation and quickly closing the exhaust port during high-frequency operation can be simultaneously met. Furthermore, a boss is provided on at least one of the surfaces of the bearing and the lift limiter facing each other. One end of the exhaust valve plate and the limiting valve plate away from the exhaust port is sandwiched between the boss and the bearing or between the boss and the lift limiter. The other end of the exhaust valve plate and the limiting valve plate away from the exhaust port is connected to the bearing or the lift limiter and located on the side of the boss facing the exhaust port. The limiting valve plate and the exhaust valve plate can be spaced apart by the boss, eliminating the need for additional components to space them apart, reducing the number of components, lowering manufacturing costs, simplifying assembly processes, and improving production efficiency.

[0009] According to some embodiments of the present invention, the stiffness of the limiting valve plate is greater than that of the exhaust valve plate.

[0010] According to some embodiments of this utility model, the thickness of the limiting valve plate is t2, which is greater than the thickness of the exhaust valve plate, which is t1.

[0011] In some embodiments of this utility model, t1 and t2 satisfy: 1.2≤t2 / t1≤2.

[0012] According to some embodiments of the present invention, the distance H between the ends of the exhaust valve plate and the limiting valve plate opposite to the exhaust hole in the axial direction of the bearing is greater than the thickness t1 of the exhaust valve plate.

[0013] In some embodiments of this utility model, H and t1 satisfy: 1.2≤H / t1≤2.

[0014] According to some embodiments of the present invention, the lift limiter has a boss on the side facing the bearing, and the end of the exhaust valve plate opposite to the exhaust hole is clamped between the boss and the bearing. The lift limiter, the exhaust valve plate, and the end of the bearing opposite to the exhaust hole are connected by a first fastener. The limit valve plate is located on the side of the boss facing the exhaust hole, and the end of the limit valve plate opposite to the exhaust hole is connected to the lift limiter by a second fastener. The length L1 of the limit valve plate is less than the length L2 of the exhaust valve plate.

[0015] In some embodiments of this utility model, the lift limiter has a first fixed plane and a second fixed plane perpendicular to the axis of the bearing on the side facing the bearing. The first fixed plane is located on the side of the boss facing the exhaust hole and is used to fit against the end of the limit valve plate away from the exhaust hole. The surface of the boss facing the bearing is formed as the second fixed plane, and the end of the exhaust valve plate away from the exhaust hole fits against the second fixed plane.

[0016] In some embodiments of this utility model, the lift limiter extends along a first direction, which is perpendicular to the axis of the bearing, the surface of the boss facing the exhaust hole is perpendicular to the first direction, and the end face of the limit valve plate away from the exhaust hole is perpendicular to the first direction.

[0017] In some embodiments of this utility model, the bearing has a valve seat on the side facing the lift limiter, and the end of the lift limiter away from the exhaust port is connected to the valve seat. The lift limiter extends along a first direction, which is perpendicular to the axis of the bearing. Along the first direction, the size of the boss is L3, and the size of the valve seat is L4, satisfying that L4 > L3.

[0018] According to some embodiments of the present invention, the bearing has a boss on the side facing the lift limiter, and the end of the limit valve plate away from the vent hole is clamped between the boss and the lift limiter. The lift limiter, the limit valve plate, and the end of the bearing away from the vent hole are connected by a third fastener. The vent valve plate is located on the side of the boss facing the vent hole, and the end of the vent valve plate away from the vent hole is connected to the bearing by a fourth fastener. The length L2 of the vent valve plate is less than the length L1 of the limit valve plate.

[0019] In some embodiments of this utility model, the bearing has a valve seat on the side facing the lift limiter, the boss is provided at the end of the valve seat away from the exhaust port, the side of the valve seat facing the lift limiter has a third fixed plane and a fourth fixed plane perpendicular to the axis of the bearing, the third fixed plane is located on the side of the boss facing the exhaust port for fitting with the end of the exhaust valve plate away from the exhaust port, the surface of the boss facing the lift limiter is formed as the fourth fixed plane, and the end of the limit valve plate away from the exhaust port fits with the fourth fixed plane.

[0020] In some embodiments of this utility model, the lift limiter extends along a first direction, which is perpendicular to the axis of the bearing. On a cross-section parallel to the axis of the exhaust hole and parallel to the first direction, along the first direction, the size of the boss is L5, and the distance between the end of the boss near the exhaust hole and the end of the valve seat near the exhaust hole is L6, satisfying: L5 > L6.

[0021] The compressor according to an embodiment of the present invention includes the bearing assembly described above.

[0022] According to the compressor of this utility model embodiment, by setting the above-mentioned bearing assembly, an exhaust valve plate and a limit valve plate are provided. The limit valve plate is located on the side of the exhaust valve plate away from the bearing and is spaced apart from the exhaust valve plate. This can simultaneously meet the needs of quickly opening the exhaust port during low-frequency operation and quickly closing the exhaust port during high-frequency operation. In addition, a boss is provided on at least one of the surfaces of the bearing and the lift limiter facing each other. One end of the exhaust valve plate and the limit valve plate away from the exhaust port is sandwiched between the boss and the bearing or between the boss and the lift limiter. The other end of the exhaust valve plate and the limit valve plate away from the exhaust port is connected to the bearing or the lift limiter and is located on the side of the boss facing the exhaust port. The limit valve plate and the exhaust valve plate can be spaced apart by the boss, eliminating the need for additional components to space the limit valve plate and the exhaust valve plate. This reduces the number of components, lowers manufacturing costs, simplifies the assembly process, and improves production efficiency.

[0023] The refrigeration equipment according to an embodiment of the present invention includes the compressor described above.

[0024] According to the refrigeration equipment of this utility model embodiment, by setting the above-mentioned compressor, the compressor includes the above-mentioned bearing assembly, and provides an exhaust valve plate and a limit valve plate. The limit valve plate is located on the side of the exhaust valve plate away from the bearing and is spaced apart from the exhaust valve plate. This can simultaneously meet the needs of quickly opening the exhaust port during low-frequency operation and quickly closing the exhaust port during high-frequency operation. In addition, a boss is provided on at least one of the surfaces of the bearing and the lift limiter facing each other. One end of the exhaust valve plate and the limit valve plate away from the exhaust port is sandwiched between the boss and the bearing or between the boss and the lift limiter. The other end of the exhaust valve plate and the limit valve plate away from the exhaust port is connected to the bearing or the lift limiter and is located on the side of the boss facing the exhaust port. The limit valve plate and the exhaust valve plate can be spaced apart by the boss, eliminating the need for additional components to space the limit valve plate and the exhaust valve plate. This reduces the number of components, lowers manufacturing costs, simplifies the assembly process, and improves production efficiency.

[0025] 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

[0026] 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: Figure 1 This is an exploded view of a bearing assembly according to an embodiment of the present utility model; Figure 2 This is a cross-sectional view of a bearing assembly according to an embodiment of the present utility model; Figure 3 yes Figure 2 Enlarged view of point A in the middle; Figure 4 This is a perspective view of the lift limiter and limit valve plate of the bearing assembly according to an embodiment of the present utility model; Figure 5 This is a cross-sectional view of the lift limiter and limit valve plate of the bearing assembly according to an embodiment of the present utility model; Figure 6 This is a perspective view of the lift limiter of the bearing assembly according to an embodiment of the present utility model; Figure 7 This is a cross-sectional view of the lift limiter of the bearing assembly according to an embodiment of the present utility model; Figure 8 This is a front view of the limiting valve plate of the bearing assembly according to an embodiment of the present utility model; Figure 9 This is a front view of the exhaust valve plate of the bearing assembly according to an embodiment of the present utility model; Figure 10This is a cross-sectional view of a bearing assembly according to another embodiment of the present invention; Figure 11 yes Figure 10 Enlarged view of point B in the middle; Figure 12 This is a perspective view of a bearing assembly according to another embodiment of the present invention.

[0027] Figure label: 100. Bearing assembly; 1. Bearing; 11. Exhaust port; 12. Valve seat; 121. Third fixed plane; 122. Fourth fixed plane; 13. Fourth connecting hole; 2. Lift limit switch; 21. Boss; 22. First fixing plane; 23. Second fixing plane; 24. First connecting hole; 25. Second connecting hole; 26. Third connecting hole; 3. Exhaust valve plate; 4. Limit valve plate; 5. First fastener; 6. Second fastener; 7. Third fastener; 8. Fourth fastener. Detailed Implementation

[0028] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0029] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] The bearing assembly 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0031] like Figure 1 , Figure 2 and Figure 10 As shown, the bearing assembly 100 according to an embodiment of the present utility model includes a bearing 1, a lift limiter 2, an exhaust valve plate 3, and a limit valve plate 4.

[0032] The bearing assembly 100 is used in the pump body assembly of the compressor. The pump body assembly includes an upper bearing assembly, a lower bearing assembly, a cylinder located between the upper and lower bearing assemblies, and a crankshaft. The cylinder has a compression chamber, and the crankshaft passes through the upper and lower bearing assemblies. The crankshaft has an eccentric portion located within the compression chamber. Additionally, rollers may be fitted around the eccentric portion, and a sliding vane may be provided inside the cylinder. The vane is movable along the radial direction of the cylinder and abuts against the outer peripheral wall of the rollers outside the eccentric portion.

[0033] The upper bearing assembly and the lower bearing assembly each have at least one vent hole 11. The bearing assembly 100 can be either the upper bearing assembly or the lower bearing assembly of the pump body assembly, and there is no limitation on this.

[0034] Specifically, the bearing 1 has an exhaust port 11, which can communicate with the compression chamber. The interaction between the eccentric part and the sliding vane compresses the refrigerant entering the compression chamber and then discharges it from the exhaust port 11. The lift limiter 2 can be located on the side of the bearing 1 away from the cylinder. One end of the lift limiter 2 is connected to the bearing 1, and the other end extends toward the exhaust port 11 and is inclined in a direction away from the bearing 1.

[0035] The exhaust valve plate 3 is located between the bearing 1 and the lift limiter 2, with one end covering the exhaust port 11. The exhaust valve plate 3 is used to open or close the exhaust port 11. The limiter valve plate 4 is located between the exhaust valve plate 3 and the lift limiter 2 and is spaced apart from the exhaust valve plate 3. Both the exhaust valve plate 3 and the limiter valve plate 4 are elastic elements. When the compressor is running, if the refrigerant pressure in the compression chamber is higher than the combined force of the pressure on the back of the exhaust valve plate 3 and the elastic force of the exhaust valve plate 3, the exhaust valve plate 3 opens the exhaust port 11, and the refrigerant flows out from the exhaust port 11, entering the system circulation through the compressor exhaust pipe. When the exhaust valve plate 3 rises to the height of the limiter valve plate 4, it prevents the exhaust valve plate 3 from over-lifting and can also push the limiter valve plate 4 upwards to the lift limiter 2.

[0036] Among them, the lift limiter 2 is a rigid component and will not bend due to the thrust of the limit valve plate 4 and the exhaust valve plate 3.

[0037] In related technologies, conventional compressor bearing exhaust assemblies only include an exhaust valve, a lift limiter, and rivets. When the compressor operates at low frequencies, the system exhaust pressure and flow rate are relatively low. During the initial exhaust phase, when the exhaust valve opens, the pressure inside the compression chamber is the same as the valve's back pressure. The exhaust flow rate is insufficient to overcome the valve's spring force, causing the valve to close again. The pressure in the pump's compression chamber then rises again, pushing the valve open, and this cycle repeats until exhaust is complete. Therefore, during low-frequency, low-pressure-difference compressor operation, the exhaust valve will repeatedly vibrate and strike the exhaust port during the exhaust phase, causing abnormal noise in the compressor and air conditioning system, affecting the user experience.

[0038] To address these issues, the industry typically reduces the spring force of the exhaust valve plate, for example, by reducing the valve plate thickness. This allows the valve plate to be easily pushed and stabilized at a certain lift even at relatively low exhaust pressure and flow rate. However, this solution introduces problems when the compressor operates at high frequencies. At the end of exhaust, the exhaust valve plate needs to close the exhaust port under its own spring force to prevent high-temperature, high-pressure exhaust from flowing back into the pump's suction chamber. Therefore, when the spring force of the exhaust valve plate is small, the valve plate's rebound speed is slower, and the valve plate's closing is delayed, leading to exhaust backflow, reduced suction volume, and consequently, decreased cooling capacity and performance.

[0039] This application includes an exhaust valve plate 3 and a limit valve plate 4. The limit valve plate 4 is located on the side of the exhaust valve plate 3 away from the bearing 1 and is spaced apart from the exhaust valve plate 3. During low-frequency operation of the compressor, the exhaust valve plate 3 plays a major role, being easily pushed and stabilized at a certain lift. This can improve the problem of abnormal noise in the compressor and air conditioning system caused by repeated fluttering and striking of the exhaust port 11 during low-frequency operation. At the same time, during high-frequency operation of the compressor, the exhaust valve plate 3 and the limit valve plate 4 work together to increase rigidity. This can improve the problem of slowed rebound speed of the exhaust valve plate 3, delayed valve closure, and subsequent backflow of exhaust gas, which reduces the intake volume and thus reduces cooling capacity and performance. Therefore, the bearing assembly 100 of this application can simultaneously meet the needs of quickly opening the exhaust port 11 during low-frequency operation and quickly closing the exhaust port 11 during high-frequency operation.

[0040] In addition, in this application, the limit valve plate 4 and the exhaust valve plate 3 are spaced apart, which can improve the problem of collision between the exhaust valve plate 3 and the limit valve plate 4 during operation.

[0041] Furthermore, such as Figure 2 , Figure 3 , Figure 10 and Figure 11 As shown, at least one of the surfaces of the lift limiter 2 and the bearing 1 facing each other is provided with a boss 21. The boss 21 is located at the end of the lift limiter 2 away from the exhaust port 11. The end of one of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust port 11 is sandwiched between the boss 21 and the bearing 1 or between the boss 21 and the lift limiter 2. The end of the other of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust port 11 is connected to the bearing 1 or the lift limiter 2 and is located on the side of the boss 21 facing the exhaust port 11.

[0042] Therefore, by setting a boss 21 on the bearing 1 or the lift limiter 2, the limit valve plate 4 and the exhaust valve plate 3 can be set alternately without adding other parts, which reduces the number of parts, lowers manufacturing costs, simplifies the assembly process, and improves production efficiency.

[0043] According to the bearing assembly 100 of this utility model embodiment, by setting an exhaust valve plate 3 and a limiting valve plate 4, the limiting valve plate 4 is located on the side of the exhaust valve plate 3 away from the bearing 1 and is spaced apart from the exhaust valve plate 3, which can simultaneously meet the needs of quickly opening the exhaust port 11 during low-frequency operation and quickly closing the exhaust port 11 during high-frequency operation. In addition, a boss 21 is provided on at least one of the surfaces of the bearing 1 and the lift limiter 2 facing each other. One end of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust hole 11 is clamped between the boss 21 and the bearing 1 or between the boss 21 and the lift limiter 2. The other end of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust hole 11 is connected to the bearing 1 or the lift limiter 2 and is located on the side of the boss 21 facing the exhaust hole 11. The limit valve plate 4 and the exhaust valve plate 3 can be spaced apart by the boss 21 without the need to add other parts to space between the limit valve plate 4 and the exhaust valve plate 3, which reduces the number of parts, lowers the manufacturing cost, simplifies the assembly process, and improves production efficiency.

[0044] In some embodiments of this invention, the stiffness of the limiting valve plate 4 is greater than that of the exhaust valve plate 3. Therefore, when the compressor operates at low frequencies, the limiting valve plate 4 limits the exhaust valve plate 3. When the compressor operates at high frequencies, both the exhaust valve plate 3 and the limiting valve plate 4 can work together to increase stiffness and improve the speed at which the exhaust valve plate 3 closes the exhaust port 11. This allows the bearing assembly 100 to simultaneously meet the requirements of rapidly opening the exhaust port 11 during low-frequency operation and rapidly closing the exhaust port 11 during high-frequency operation.

[0045] In some embodiments of this invention, the thickness of the limiting valve plate 4 (t2) is greater than the thickness of the exhaust valve plate 3 (t1). This results in lower stiffness of the exhaust valve plate 3, allowing it to maintain a certain opening even when the compressor is running at low speed and the pressure difference between the inside and outside of the compression chamber is small. This reduces the probability of repeated opening and closing of the exhaust valve plate 3, thereby reducing the impact of the exhaust valve plate 3 on the bearing 1 and lowering vibration and noise during compressor exhaust. When the compressor is running at a lower speed, as the exhaust valve plate 3 moves a certain displacement away from the exhaust port 11, the spacing between the exhaust valve plate 3 and the limiting valve plate 4 reduces the probability of their collision, further reducing the probability of vibration and noise caused by the collision, and further reducing vibration and noise of the compressor during low-frequency operation.

[0046] In addition, since the thickness of the exhaust valve plate 3 is less than that of the limit valve plate 4, the rigidity of the exhaust valve plate 3 is lower, which reduces the pressure required for the exhaust valve plate 3 to open, reduces the energy loss when the compression chamber is venting, and improves the exhaust efficiency of the compressor.

[0047] When the compressor operates at a high speed, the exhaust valve plate 3 and the limit valve plate 4 move together, increasing the rigidity of the valve plate controlling the exhaust port 11. This, in turn, improves the fatigue resistance of the exhaust valve plate 3 and the limit valve plate 4, extends their service life, and enhances the stability of the compressor during operation. Furthermore, the coordinated movement of the exhaust valve plate 3 and the limit valve plate 4 increases the rigidity of the valve plate controlling the exhaust port 11. At the moment exhaust begins, the exhaust valve plate 3 and the limit valve plate 4 will not rapidly impact the lift limit switch 2. While reducing the movement speed of the exhaust valve plate 3 and the limit valve plate 4, even if the limit valve plate 4 collides with the lift limit switch 2, the vibration and noise generated by the collision are relatively small, further reducing the vibration and noise of the compressor during high-frequency operation.

[0048] In addition, the exhaust valve plate 3 and the limit valve plate 4 work together to control the exhaust port 11, so that the exhaust port 11 can be switched to the closed state more quickly when the compressor is not discharging, thereby reducing the probability of high temperature and high pressure refrigerant backflow and improving the energy efficiency of the compressor.

[0049] In some embodiments of this utility model, the thickness t1 of the exhaust valve plate 3 and the thickness t2 of the limit valve plate 4 satisfy: 1.2≤t2 / t1≤2. This allows for a more reasonable setting of the stiffness of the exhaust valve plate 3 and the limit valve plate 4, reducing the probability of the exhaust valve plate 3 repeatedly opening and closing during low-frequency compressor operation, thereby reducing the impact of the exhaust valve plate 3 on the bearing 1, and reducing vibration and noise during compressor exhaust. During high-frequency compressor operation, the exhaust valve plate 3 and the limit valve plate 4 work together to control the exhaust port 11, enabling the exhaust port 11 to more quickly transition to a closed state when the compressor is not exhausting, thus reducing the probability of high-temperature, high-pressure refrigerant backflow and improving compressor energy efficiency. Therefore, the exhaust valve plate 3 and the limit valve plate 4 can better meet the needs of both low-frequency and high-frequency compressor operation.

[0050] Optionally, the ratio of the thickness t2 of the limit valve plate 4 to the thickness t1 of the exhaust valve plate 3 can be 1.3, 1.4, 1.5, 1.6, 1.7, 1.8 or 1.9, etc.

[0051] In some embodiments of this utility model, such as Figure 3 and Figure 11As shown, the distance H between the ends of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust port 11 in the axial direction of the bearing 1 is greater than the thickness t1 of the exhaust valve plate 3. This allows the exhaust valve plate 3 to rise to the height of the limit valve plate 4 when opening the exhaust port 11 at a preset frequency. This reduces the probability of the exhaust valve plate 3 repeatedly opening and closing during low-frequency compressor operation, thereby reducing the impact of the exhaust valve plate 3 on the bearing 1 and lowering vibration and noise during compressor exhaust. During high-frequency compressor operation, the exhaust valve plate 3 and the limit valve plate 4 work together to control the exhaust port 11, allowing the exhaust port 11 to more quickly transition to a closed state when the compressor is not exhausting, thus reducing the probability of high-temperature, high-pressure refrigerant backflow and improving compressor energy efficiency. Therefore, the exhaust valve plate 3 and the limit valve plate 4 can better meet the needs of both low-frequency and high-frequency compressor operation.

[0052] In addition, it can reduce the probability of the exhaust valve plate 3 and the limit valve plate 4 colliding, thereby reducing the probability of vibration and noise caused by the collision of the exhaust valve plate 3 and the limit valve plate 4, and further reducing the vibration and noise of the compressor when it is running at low frequency.

[0053] In some embodiments of this utility model, H and t1 satisfy: 1.2≤H / t1≤2. This allows for a better and more reasonable setting of the distance H between the ends of the exhaust valve plate 3 and the limit valve plate 4 facing away from the exhaust port 11 in the axial direction of the bearing 1, and the thickness t1 of the exhaust valve plate 3. This ensures that when the exhaust valve plate 3 opens the exhaust port 11 at a preset frequency, it can rise to the height of the limit valve plate 4. This reduces the probability of the exhaust valve plate 3 repeatedly opening and closing during low-frequency compressor operation, thereby reducing the impact of the exhaust valve plate 3 on the bearing 1 and lowering vibration and noise during compressor exhaust. During high-frequency compressor operation, the exhaust valve plate 3 and the limit valve plate 4 work together to control the exhaust port 11, allowing the exhaust port 11 to more quickly transition to a closed state when the compressor is not exhausting, thus reducing the probability of high-temperature, high-pressure refrigerant backflow and improving compressor energy efficiency. Therefore, the exhaust valve plate 3 and the limit valve plate 4 can better meet the needs of both low-frequency and high-frequency compressor operation.

[0054] Optionally, the ratio H / t1 of the distance H between the end of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust hole 11 in the axial direction of the bearing 1 and the thickness t1 of the exhaust valve plate 3 can be 1.3, 1.4, 1.5, 1.6, 1.7, 1.8 or 1.9, etc.

[0055] In some embodiments of this utility model, such as Figures 3-5 , Figure 8 and Figure 9As shown, the lift limiter 2 has a boss 21 on the side facing the bearing 1. The end of the exhaust valve plate 3 away from the exhaust hole 11 is sandwiched between the boss 21 and the bearing 1. The lift limiter 2, the exhaust valve plate 3 and the end of the bearing 1 away from the exhaust hole 11 are connected by the first fastener 5. The limit valve plate 4 is located on the side of the boss 21 facing the exhaust hole 11. The end of the limit valve plate 4 away from the exhaust hole 11 is connected to the lift limiter 2 by the second fastener 6. The length L1 of the limit valve plate 4 is less than the length L2 of the exhaust valve plate 3.

[0056] The length L1 of the limit valve plate 4 is less than the length L2 of the exhaust valve plate 3, which can relatively improve the rigidity of the limit valve plate 4. A boss 21 is provided on the side of the lift limiter 2 facing the bearing 1. The boss 21 and the bearing 1 cooperate to fix the exhaust valve plate 3. The limit valve plate 4 is fixed on the lift limiter 2, which can better realize the interval setting of the exhaust valve plate 3 and the limit valve plate 4, so that the bearing assembly 100 can be simultaneously used in both low-frequency and high-frequency operation of the compressor.

[0057] Specifically, the lift limiter 2 is provided with a first connecting hole 24 and a second connecting hole 25. The second fastener 6 passes through the second connecting hole 25 and the limit valve plate 4, fixing the limit valve plate 4 and the lift limiter 2 together. The first fastener 5 passes through the first connecting hole 24 on the lift limiter 2, the exhaust valve plate 3 and the bearing 1, fixing the lift limiter 2, the exhaust valve plate 3 and the bearing 1 together.

[0058] Among them, the first fastener 5 and the second fastener 6 are rivets.

[0059] During the assembly of bearing assembly 100, the lift limiter 2 and the limit valve plate 4 are riveted together by the second fastener 6 to form the limiter assembly; the exhaust valve plate 3 is mounted on the valve seat 12 on the bearing 1, and the limiter assembly covers the exhaust valve plate 3. The first fastener 5 passes through the lift limiter 2, the exhaust valve plate 3, and the bearing 1 to fix the lift limiter 2, the exhaust valve plate 3, and the bearing 1 together to form bearing assembly 100. Compared with the existing multi-layer exhaust valve plate stacking installation scheme, the above process reduces the gasket and its installation process, and the limit valve plate 4 and the exhaust valve plate 3 are installed in different processes. The limiter assembly can be supplied after outsourcing assembly, which facilitates incoming material quality inspection and effectively solves the risk of misinstallation and omission during valve plate stacking installation.

[0060] When the compressor operates at low frequency, the exhaust flow is small, so the thickness t1 of the exhaust valve plate 3 is relatively small, the length L2 is relatively large, and the overall rigidity is relatively low. This makes it easier for the exhaust valve plate 3 to open and prevents valve plate chatter, thus improving compressor noise. Simultaneously, the opening lift of the exhaust valve plate 3 is relatively small; after opening, the exhaust valve plate 3 reaches its maximum lift upon contact with the first limit switch and closes promptly after exhaust is complete. When the compressor operates at high frequency, the exhaust valve plate 3 opens rapidly and collides with the limit valve plate 4. Under the further action of the gas thrust, it bends until it comes into contact with the lift limit switch 2. When exhaust is complete, conventional solutions struggle to close quickly due to the low rigidity of the exhaust valve plate 3. In this invention, because the limit valve plate 4 is an elastic element with a large thickness t2 and a small length L1, its overall rigidity is high. Under the elastic action of the limit valve plate 4, the exhaust valve plate 3 can quickly rebound and close the exhaust port 11, preventing high-pressure gas backflow caused by valve plate closure delay, effectively improving volumetric efficiency and enhancing compressor performance.

[0061] In some embodiments of this utility model, such as Figures 4-7 As shown, the lift limiter 2 has a first fixed plane 22 and a second fixed plane 23 perpendicular to the axis of the bearing 1 on the side facing the bearing 1. The first fixed plane 22 is located on the side of the boss 21 facing the exhaust hole 11 and is used to fit against the end of the limit valve plate 4 away from the exhaust hole 11. The surface of the boss 21 facing the bearing 1 forms the second fixed plane 23, and the end of the exhaust valve plate 3 away from the exhaust hole 11 fits against the second fixed plane 23. This facilitates the fixing of the limit valve plate 4 and the exhaust valve plate 3, and at the same time improves the reliability of the operation of the exhaust valve plate 3 and the limit valve plate 4. For example, Figure 3 As shown, the distance H between the end of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust port 11 in the axial direction of the bearing 1 is the height difference between the second fixed plane and the lower end face of the limit valve plate 4.

[0062] In some embodiments of this utility model, such as Figure 6 and Figure 8 As shown, the lift limiter 2 extends along a first direction, which is perpendicular to the axis of the bearing 1. The surface of the boss 21 facing the exhaust port 11 is perpendicular to the first direction, and the end face of the limit valve plate 4 away from the exhaust port 11 is perpendicular to the first direction. The surface of the boss 21 facing the exhaust port 11 and the end face of the limit valve plate 4 away from the exhaust port 11 cooperate and position each other, ensuring the parallelism of the limit valve plate 4 after assembly and preventing tilting.

[0063] In some embodiments of this utility model, the side of the bearing 1 facing the lift limiter 2 has a valve seat 12. The end of the lift limiter 2 away from the exhaust port 11 is connected to the valve seat 12. The lift limiter 2 extends along a first direction, which is perpendicular to the axis of the bearing 1. Along the first direction, the size of the boss 21 is L3, and the size of the valve seat 12 is L4, and the following condition is met: L4 > L3. Since the length L2 of the exhaust valve plate 3 is larger than the length L1 of the limit valve plate 4 (L2>L1), and the exhaust valve plate 3 is installed on the valve seat 12, the size L4 of the valve seat 12 needs to ensure a certain proportion of the length to guarantee installation stability. The stiffness of the limit valve plate 4 affects the valve plate response at high frequencies, so the length of the limit valve plate 4 needs to be designed reasonably. The size L3 of the boss 21 restricts the length design of the limit valve plate 4. Therefore, the size L3 of the boss 21 cannot be too large. Therefore, the size L3 of the boss 21 is designed such that the size L4 of the valve seat 12 satisfies: L4>L3. This ensures the installation stability of the exhaust valve plate 3 and also prevents the length L1 of the limit valve plate 4 from being too small, which would lead to excessive stiffness and increase exhaust resistance due to high-frequency valve plate opening delay caused by excessive stiffness.

[0064] In some embodiments of this utility model, such as Figure 10 and Figure 11 As shown, the bearing 1 has a boss 21 on the side facing the lift limiter 2. The end of the limit valve plate 4 away from the exhaust hole 11 is sandwiched between the boss 21 and the lift limiter 2. The lift limiter 2, the limit valve plate 4 and the end of the bearing 1 away from the exhaust hole 11 are connected by a third fastener 7. The exhaust valve plate 3 is located on the side of the boss 21 facing the exhaust hole 11. The end of the exhaust valve plate 3 away from the exhaust hole 11 is connected to the bearing 1 by a fourth fastener 8. The length L2 of the exhaust valve plate 3 is less than the length L1 of the limit valve plate 4.

[0065] A boss 21 is provided on the side of the bearing 1 facing the lift limiter 2. The boss 21 and the lift limiter 2 cooperate to fix the limit valve plate 4. The exhaust valve plate 3 is fixed on the bearing 1, which can better realize the interval setting of the exhaust valve plate 3 and the limit valve plate 4, so that the bearing assembly 100 can simultaneously take into account both the low-frequency operation and the high-frequency operation of the compressor.

[0066] Specifically, the lift limiter 2 has a third connecting hole 26, and the bearing 1 has a fourth connecting hole 13. The third fastener 7 passes through the third connecting hole 26, the limit valve plate 4, and the bearing 1 to fix the lift limiter 2, the limit valve plate 4, and the bearing 1 together. The fourth fastener 8 passes through the exhaust valve plate 3 and the bearing 1 to fix the exhaust valve plate 3 and the bearing 1 together.

[0067] Among them, the third fastener 7 and the fourth fastener 8 are rivets.

[0068] During the assembly of bearing assembly 100, an exhaust valve plate 3 is installed on the bearing 1 and fixed by a fourth fastener 8; a limit valve plate 4 is installed on the boss 21 of the bearing 1, and a lift limiter 2 is superimposed and fixed by a third fastener 7 to form bearing assembly 100.

[0069] When the compressor operates at low frequency, the exhaust flow is small, so the thickness t1 of the exhaust valve plate 3 is relatively small. This makes it easier for the exhaust valve plate 3 to open and prevents valve plate chatter, thus improving compressor noise. When the compressor operates at high frequency, the exhaust valve plate 3 opens quickly and collides with the limit valve plate 4. Under the further action of gas thrust, it bends until it comes into contact with the lift limiter 2. When the exhaust ends, the thickness t2 of the limit valve plate 4 is larger. Under its elastic action, it can quickly rebound and close the exhaust port 11, preventing high-pressure gas backflow caused by the delayed closing of the exhaust valve plate 3. This effectively improves volumetric efficiency and enhances compressor performance.

[0070] In some embodiments of this utility model, such as Figure 11 and Figure 12 As shown, the bearing 1 has a valve seat 12 on one side facing the lift limiter 2. A boss 21 is located at the end of the valve seat 12 facing away from the exhaust port 11. The side of the valve seat 12 facing the lift limiter 2 has a third fixing plane 121 and a fourth fixing plane 122 perpendicular to the axis of the bearing 1. The third fixing plane 121 is located on the side of the boss 21 facing the exhaust port 11 and is used to fit against the end of the exhaust valve plate 3 facing away from the exhaust port 11. The surface of the boss 21 facing the lift limiter 2 is formed as the fourth fixing plane 122, and the end of the limiter valve plate 4 facing away from the exhaust port 11 fits against the fourth fixing plane 122. This facilitates the fixing of the limiter valve plate 4 and the exhaust valve plate 3, and at the same time improves the reliability of the operation of the exhaust valve plate 3 and the limiter valve plate 4. For example, Figure 11 As shown, the distance H between the ends of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust hole 11 in the axial direction of the bearing 1 is the height difference between the lower end face of the limit valve plate 4 and the upper end face of the exhaust valve plate 3.

[0071] In some embodiments of this utility model, such as Figure 11As shown, the lift limiter 2 extends along a first direction, which is perpendicular to the axis of the bearing 1. On a cross-section parallel to the axis of the exhaust port 11 and parallel to the first direction, along the first direction, the boss 21 has a dimension of L5. The distance between the end of the boss 21 near the exhaust port 11 and the end of the valve seat 12 near the exhaust port 11 is L6, satisfying: L5 > L6. The portion of the limit valve plate 4 that mates with the bearing 1 is the fourth fixed plane 122, with a length of L5. The portion of the exhaust valve plate 3 that mates with the bearing 1 is the third fixed plane 121, with a length of L6. Because the length of the limit valve plate 4 is greater than the length of the exhaust valve plate 3, the proportional lengths L5 of the fourth fixed plane 122 and L6 of the third fixed plane 121 satisfy: L5 > L6, thus ensuring the stability of the exhaust 3 and the limit valve plate 4.

[0072] The compressor according to an embodiment of the present invention includes the bearing assembly 100 described above.

[0073] According to the compressor of this utility model embodiment, by setting the bearing assembly 100 described above, an exhaust valve plate 3 and a limit valve plate 4 are provided. The limit valve plate 4 is located on the side of the exhaust valve plate 3 away from the bearing 1 and is spaced apart from the exhaust valve plate 3. This can simultaneously meet the needs of quickly opening the exhaust port 11 during low-frequency operation and quickly closing the exhaust port 11 during high-frequency operation. In addition, a boss 21 is provided on at least one of the surfaces of the bearing 1 and the lift limiter 2 facing each other. One end of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust hole 11 is clamped between the boss 21 and the bearing 1 or between the boss 21 and the lift limiter 2. The other end of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust hole 11 is connected to the bearing 1 or the lift limiter 2 and is located on the side of the boss 21 facing the exhaust hole 11. The limit valve plate 4 and the exhaust valve plate 3 can be spaced apart by the boss 21 without the need to add other parts to space between the limit valve plate 4 and the exhaust valve plate 3, which reduces the number of parts, lowers the manufacturing cost, simplifies the assembly process, and improves production efficiency.

[0074] The following describes a refrigeration device according to an embodiment of the present invention.

[0075] The refrigeration equipment according to an embodiment of the present invention includes the compressor described above.

[0076] According to the refrigeration equipment of this utility model embodiment, by setting the above-mentioned compressor, the compressor includes the above-mentioned bearing assembly 100, and is provided with exhaust valve plate 3 and limit valve plate 4. The limit valve plate 4 is located on the side of exhaust valve plate 3 away from bearing 1 and is spaced apart from exhaust valve plate 3, which can simultaneously meet the needs of quickly opening exhaust port 11 during low-frequency operation and quickly closing exhaust port 11 during high-frequency operation. In addition, a boss 21 is provided on at least one of the surfaces of the bearing 1 and the lift limiter 2 facing each other. One end of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust hole 11 is clamped between the boss 21 and the bearing 1 or between the boss 21 and the lift limiter 2. The other end of the exhaust valve plate 3 and the limit valve plate 4 away from the exhaust hole 11 is connected to the bearing 1 or the lift limiter 2 and is located on the side of the boss 21 facing the exhaust hole 11. The limit valve plate 4 and the exhaust valve plate 3 can be spaced apart by the boss 21 without the need to add other parts to space between the limit valve plate 4 and the exhaust valve plate 3, which reduces the number of parts, lowers the manufacturing cost, simplifies the assembly process, and improves production efficiency.

[0077] The refrigeration equipment can be an air conditioner or a refrigerator, etc. The air conditioner includes a compressor, a four-way valve, an outdoor heat exchanger, a throttling valve and an indoor heat exchanger. The compressor, four-way valve, outdoor heat exchanger, throttling valve and indoor heat exchanger are connected to form an air conditioning system.

[0078] Other components and operations of the refrigeration equipment and compressor according to embodiments of the present invention are known to those skilled in the art and will not be described in detail here.

[0079] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, 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.

[0080] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A bearing assembly, characterized in that, include: The bearing has an exhaust port; A lift limiter, one end of which is connected to the bearing, and the other end which extends toward the exhaust port and is inclined toward a direction away from the bearing. At least one of the surfaces of the lift limiter and the bearing facing each other is provided with a boss, the boss being located at the end of the lift limiter away from the exhaust port. An exhaust valve plate, wherein the exhaust valve plate is located between the bearing and the lift limiter and one end covers the exhaust port; A limiting valve plate is located between the exhaust valve plate and the lift limiter and is spaced apart from the exhaust valve plate. One end of the exhaust valve plate and the limiting valve plate facing away from the exhaust hole is sandwiched between the boss and the bearing or between the boss and the lift limiter. The other end of the exhaust valve plate and the limiting valve plate facing away from the exhaust hole is connected to the bearing or the lift limiter and is located on the side of the boss facing the exhaust hole.

2. The bearing assembly according to claim 1, characterized in that, The stiffness of the limiting valve plate is greater than that of the exhaust valve plate.

3. The bearing assembly according to claim 1, characterized in that, The thickness of the limiting valve plate is t2, which is greater than the thickness of the exhaust valve plate, t1.

4. The bearing assembly according to claim 3, characterized in that, t1 and t2 satisfy: 1.2≤t2 / t1≤2.

5. The bearing assembly according to claim 1, characterized in that, The distance H between the ends of the exhaust valve plate and the limit valve plate opposite to the exhaust hole in the axial direction of the bearing is greater than the thickness t1 of the exhaust valve plate.

6. The bearing assembly according to claim 5, characterized in that, H and t1 satisfy: 1.2≤H / t1≤2.

7. The bearing assembly according to claim 1, characterized in that, The lift limiter has a boss on the side facing the bearing. The end of the exhaust valve plate opposite to the exhaust hole is clamped between the boss and the bearing. The lift limiter, the exhaust valve plate, and the end of the bearing opposite to the exhaust hole are connected by a first fastener. The limit valve plate is located on the side of the boss facing the exhaust hole. The end of the limit valve plate opposite to the exhaust hole is connected to the lift limiter by a second fastener. The length L1 of the limit valve plate is less than the length L2 of the exhaust valve plate.

8. The bearing assembly according to claim 7, characterized in that, The lift limiter has a first fixed plane and a second fixed plane perpendicular to the axis of the bearing on the side facing the bearing. The first fixed plane is located on the side of the boss facing the exhaust hole and is used to fit against the end of the limit valve plate away from the exhaust hole. The surface of the boss facing the bearing is formed as the second fixed plane, and the end of the exhaust valve plate away from the exhaust hole fits against the second fixed plane.

9. The bearing assembly according to claim 7, characterized in that, The lift limiter extends along a first direction, which is perpendicular to the axis of the bearing. The surface of the boss facing the exhaust port is perpendicular to the first direction, and the end face of the limit valve plate away from the exhaust port is perpendicular to the first direction.

10. The bearing assembly according to claim 7, characterized in that, The bearing has a valve seat on the side facing the lift limiter, and the end of the lift limiter opposite to the vent is connected to the valve seat. The lift limiter extends along a first direction, which is perpendicular to the axis of the bearing. Along the first direction, the size of the boss is L3, the size of the valve seat is L4, and L4 > L3.

11. The bearing assembly according to claim 1, characterized in that, The bearing has a boss on the side facing the lift limiter. The end of the limit valve plate opposite to the vent hole is sandwiched between the boss and the lift limiter. The lift limiter, the limit valve plate, and the end of the bearing opposite to the vent hole are connected by a third fastener. The vent valve plate is located on the side of the boss facing the vent hole. The end of the vent valve plate opposite to the vent hole is connected to the bearing by a fourth fastener. The length L2 of the vent valve plate is less than the length L1 of the limit valve plate.

12. The bearing assembly according to claim 11, characterized in that, The bearing has a valve seat on the side facing the lift limiter. The boss is located at the end of the valve seat opposite to the exhaust port. The side of the valve seat facing the lift limiter has a third fixed plane and a fourth fixed plane perpendicular to the axis of the bearing. The third fixed plane is located on the side of the boss facing the exhaust port and is used to fit against the end of the exhaust valve plate opposite to the exhaust port. The surface of the boss facing the lift limiter is formed as the fourth fixed plane. The end of the limit valve plate opposite to the exhaust port fits against the fourth fixed plane.

13. The bearing assembly according to claim 12, characterized in that, The lift limiter extends along a first direction, which is perpendicular to the axis of the bearing. On a cross section parallel to the axis of the exhaust port and parallel to the first direction, along the first direction, the size of the boss is L5, the distance between the end of the boss near the exhaust port and the end of the valve seat near the exhaust port is L6, and satisfies: L5 > L6.

14. A compressor, characterized in that, Includes the bearing assembly according to any one of claims 1-13.

15. A refrigeration device, characterized in that, Includes the compressor according to claim 14.

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