Exhaust valve assembly, compressor and refrigeration equipment

Abstract

The exhaust valve assembly is used for the compressor, the compressor comprises an air cylinder, the air cylinder is provided with a compression cavity and a columnar hole, an exhaust hole communicated with the compression cavity is formed in the inner circumferential wall of the columnar hole, and the exhaust valve assembly is movably arranged in the columnar hole and comprises a fixing column, an exhaust pipe, a first air outlet and a second air outlet. The fixing column extends in the axial direction of the columnar hole. And the multiple sets of valve plates are arranged on the peripheral wall of the fixing column, at least two sets of valve plates are different in rigidity, and each set of valve plates is selectively used for opening or closing the exhaust hole. According to the exhaust valve assembly, the compressor can achieve two or more working modes with better performance and reliability under the working conditions of different rotating speeds or pressures and the like, one mode can be selected from the two or more working modes to operate, and the compressor can be operated in the two or more working modes. And different requirements of compressor operation are met, and the performance and reliability of compressor operation are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to an exhaust valve component, a compressor and refrigeration equipment. Background Art

[0002] In the related art, rotary compressors mainly use straight tongue-shaped valve plates. Currently, some compressors use cylindrical exhaust valves. However, these two types of exhaust valves cannot take into account multiple compressor working modes and cannot meet usage requirements. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an exhaust valve assembly, which can realize two or more working modes of the compressor with better performance and reliability under different working conditions such as speed or pressure, meet different requirements of compressor operation and ensure the performance and reliability of the compressor operation.

[0004] The utility model also provides a compressor, which comprises the exhaust valve assembly.

[0005] The utility model also provides a refrigeration device, which comprises the above-mentioned compressor.

[0006] According to the exhaust valve assembly of the embodiment of the utility model, it is used for a compressor, the compressor includes a cylinder, the cylinder has a compression chamber and a cylindrical hole, the inner peripheral wall of the cylindrical hole has an exhaust hole connected to the compression chamber, the exhaust valve assembly can be movably arranged in the cylindrical hole and includes: a fixed column, the fixed column extends along the axial direction of the cylindrical hole; multiple groups of valve plates, the multiple groups of valve plates are arranged on the outer peripheral wall of the fixed column, there are at least two groups of valve plates with different stiffness, each group of valve plates can be selectively used to open or close the exhaust hole.

[0007] According to the exhaust valve assembly of the embodiment of the utility model, the exhaust valve assembly is movably arranged in the cylindrical hole of the cylinder, and multiple groups of valve plates are arranged on the outer peripheral wall of the fixed column, and the stiffness of at least two groups of valve plates is different, so that a group of valve plates with different stiffness can be switched to be used in a working state, and the performance and reliability of the compressor can be achieved under different working conditions such as speed or pressure. Two or more working modes can be achieved, and one of the two or more working modes can be selected to operate, thereby meeting different requirements for the operation of the compressor and ensuring the performance and reliability of the compressor.

[0008] According to some embodiments of the utility model, one end of the valve sheet in each group of the valve sheets along the circumferential direction of the fixing column is connected to the fixing column, and the remaining part is spaced apart from the outer peripheral wall of the fixing column.

[0009] In some embodiments of the present invention, at least two groups of valve sheets have different extension lengths along the circumferential direction of the fixing column, and / or different thicknesses, and / or different materials.

[0010] In some embodiments of the present invention, at least two groups of valve sheets have different thicknesses, a single valve sheet in each group of valve sheets includes at least one layer of sub-valve sheets, all sub-valve sheets have the same thickness, and at least two groups of valve sheets include sub-valve sheets with different numbers of layers.

[0011] In some embodiments of the present invention, the valve plate is connected to the fixing column via a fastener.

[0012] According to some embodiments of the utility model, it also includes: a driving device, which is connected to the fixed column to drive the fixed column to be movably disposed in the columnar hole, and is used to make one group of the valve plates opposite to the exhaust hole to open or close the exhaust hole or to make all groups of the valve plates be separated from at least part of the exhaust hole.

[0013] In some embodiments of the present invention, the driving device is used to drive the fixing column to rotate around the axis of the fixing column, and a plurality of groups of valve sheets are arranged in a circumferential direction of the fixing column.

[0014] In some embodiments of the present invention, the driving device includes a driving motor, and an output shaft of the driving motor is connected to one axial end of the fixing column.

[0015] In some embodiments of the present invention, the driving device is used to drive the fixing column to move along the axis of the cylindrical hole, and a plurality of groups of the valve sheets are arranged in the axial direction of the fixing column.

[0016] In some embodiments of the utility model, a magnet is provided on the fixed column, and the driving device includes an electromagnetic coil, which is sleeved outside the fixed column; or, the fixed column has air cavities at both ends in the axial direction, and the driving device includes an air pressure supply device, which is connected to the air cavity and is used to transport the same pressure or different pressure gases into the two air cavities, and the air pressure supply device is connected to the exhaust port of the compressor and the return port of the compressor.

[0017] According to some embodiments of the utility model, there is one exhaust hole, and each group of the valve plates includes one valve plate; or, there are multiple exhaust holes spaced apart, and each group of the valve plates includes multiple valve plates corresponding to the multiple exhaust holes, wherein the multiple exhaust holes are spaced apart along the axial direction of the columnar hole and / or spaced apart along the circumferential direction of the columnar hole.

[0018] According to some embodiments of the utility model, a connecting hole extending along the axial direction of the fixing column is provided in the fixing column, and an opening connected to the connecting hole is provided on the outer peripheral wall of the fixing column. The opening is spaced apart from the valve sheet, and the opening can be opposite to and connected to the exhaust hole.

[0019] According to the compressor of the embodiment of the utility model, it includes: a cylinder, an upper bearing and a lower bearing, the cylinder is arranged between the upper bearing and the lower bearing, the cylinder has a compression chamber and a cylindrical hole, the inner peripheral wall of the cylindrical hole has an exhaust hole connected to the compression chamber; the above-mentioned exhaust valve assembly, the exhaust valve assembly can be movably arranged in the cylindrical hole, and each group of the valve plates can be selectively used to open or close the exhaust hole.

[0020] According to the compressor of the embodiment of the utility model, the above-mentioned exhaust valve assembly is arranged so that the exhaust valve assembly can be movably arranged in the cylindrical hole of the cylinder, and a plurality of groups of valve plates are arranged on the outer peripheral wall of the fixed column, and the stiffness of at least two groups of valve plates is different, so that a group of valve plates with different stiffness can be switched and used in a working state, so that the compressor can achieve two or more working modes with better performance and reliability under different working conditions such as speed or pressure, and one of the two or more working modes can be selected to operate, thereby meeting different requirements for the operation of the compressor and ensuring the performance and reliability of the compressor.

[0021] In some embodiments of the present invention, the cylindrical hole extends along the axial direction of the cylinder, and the exhaust valve assembly also includes a driving device, which is connected to the fixed column to drive the fixed column to be movably arranged in the cylindrical hole, and the driving device is located on the side of the lower bearing away from the upper bearing and connected to the lower bearing; or the driving device is located on the side of the upper bearing away from the lower bearing and connected to the upper bearing.

[0022] In some embodiments of the utility model, the cylinder is multiple and includes a first cylinder and a second cylinder, a middle partition is provided between the first cylinder and the second cylinder, and the columnar holes in the first cylinder and the second cylinder extend along the axial direction of the cylinder and are concentrically arranged.

[0023] In some embodiments of the present invention, the fixing column of the exhaust valve assembly in the first cylinder and the fixing column of the exhaust valve assembly in the second cylinder are an integral part or a separate part.

[0024] In some embodiments of the present invention, the fixing column of the exhaust valve assembly in the first cylinder and the fixing column of the exhaust valve assembly in the second cylinder are separate parts and move synchronously.

[0025] In some embodiments of the present invention, the compressor is a rotary compressor.

[0026] The refrigeration equipment according to the embodiment of the utility model includes the above-mentioned compressor.

[0027] According to the refrigeration equipment of the embodiment of the utility model, by setting the above-mentioned compressor, the above-mentioned compressor is set with the above-mentioned exhaust valve assembly, so that the exhaust valve assembly can be movably arranged in the cylindrical hole of the cylinder, and a plurality of groups of valve plates are arranged on the outer peripheral wall of the fixed column, and the stiffness of at least two groups of valve plates is different, so that a group of valve plates with different stiffness can be switched to be used in a working state, and the compressor can achieve two or more working modes with better performance and reliability under different working conditions such as speed or pressure, and one of the two or more working modes can be selected to operate, thereby meeting different requirements for the operation of the compressor and ensuring the performance and reliability of the compressor operation, thereby improving the performance of the refrigeration equipment.

[0028] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0030] Figure 1 is a three-dimensional diagram of a compressor according to an embodiment of the utility model;

[0031] Figure 2 is a cross-sectional view of a compression mechanism of a compressor according to an embodiment of the utility model;

[0032] Figure 3 is an exploded diagram of a compression mechanism of a compressor according to an embodiment of the utility model;

[0033] Figure 4 is a three-dimensional diagram of a cylinder of a compression mechanism of a compressor according to an embodiment of the utility model;

[0034] Figure 5 is a stereoscopic diagram of an exhaust valve assembly according to an embodiment of the utility model;

[0035] Figure 6 It is a three-dimensional diagram of a fixing column, a valve plate and a fastener of an exhaust valve assembly according to an embodiment of the utility model;

[0036] Figure 7 is an exploded view of a fixing column, a valve plate and a fastener of an exhaust valve assembly according to an embodiment of the utility model;

[0037] Figure 8yes Figure 7 The enlarged view of point A in the middle;

[0038] Fig. 9 It is an exploded view from another angle of the fixing column, valve plate and fastener of the exhaust valve assembly according to an embodiment of the utility model.

[0039] Reference numerals:

[0040] 100. Compressor;

[0041] 10. Exhaust valve assembly;

[0042] 1. Fixed column; 11. Communication hole; 12. Opening;

[0043] 2. Valve plate; 21. Sub-valve plate;

[0044] 3. Fasteners; 4. Driving device;

[0045] 20, cylinder; 201, compression chamber; 202, columnar hole; 203, exhaust hole;

[0046] 30. Upper bearing; 40. Lower bearing; 50. Housing; 60. Muffler; 70. Crankshaft. DETAILED DESCRIPTION

[0047] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0048] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0049] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0050] The exhaust valve assembly 10 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0051] like Figure 2-Figure 5 As shown, the exhaust valve assembly 10 according to an embodiment of the utility model is used for a compressor 100, and the compressor 100 includes a cylinder 20, and the cylinder 20 has a compression chamber 201 and a cylindrical hole 202. The inner peripheral wall of the cylindrical hole 202 has an exhaust hole 203 connected to the compression chamber 201, and the cylindrical hole 202 is connected to the exhaust port on the compressor 100.

[0052] Optionally, the cross section of the columnar hole 202 may be circular, that is, the columnar hole 202 is a cylindrical hole. Of course, the utility model is not limited thereto. The columnar hole 202 may also be an elliptical column hole or a polygonal column hole, and the corresponding cross section of the columnar hole 202 is elliptical or polygonal, respectively.

[0053] Optionally, the exhaust hole 203 may be a circular hole. Of course, the exhaust hole 203 may also be an elliptical hole or a polygonal hole.

[0054] like Figure 2 , Figure 5 and Figure 6 As shown, the exhaust valve assembly 10 is movably disposed in the columnar hole 202 and includes a fixed column 1 and a plurality of valve plates 2. The fixed column 1 extends along the axial direction of the columnar hole 202 and is movable in the columnar hole 202. For example, the fixed column 1 can move along the axis of the columnar hole 202 in the columnar hole 202, or can rotate around the axis of the columnar hole 202. Of course, it can move along the axis of the columnar hole 202 and can also rotate around the axis of the columnar hole 202. The cross-sectional shape of the fixed column 1 can be the same as the cross-sectional shape of the columnar hole 202. For example, in Figure 4 In the example shown, the cross-section of the columnar hole 202 is circular, the cross-section of the fixing column 1 is circular, and the diameter of the fixing column 1 is smaller than the diameter of the columnar hole 202 .

[0055] Multiple groups of valve sheets 2 are distributed on the outer peripheral wall of the fixed column 1. The multiple groups of valve sheets 2 can be arranged and spaced along one direction or multiple directions of the fixed column 1, wherein the arrangement of the valve sheets 2 in the multiple groups of valve sheets 2 is the same. For example, when there are two groups of valve sheets 2, the arrangement of the valve sheets 2 in one group of valve sheets 2 is the same as that in the other group of valve sheets 2. There are at least two groups of valve sheets 2 with different stiffness, and each group of valve sheets 2 can be selectively used to open or close the exhaust hole 203. It can be understood that when there are only two groups of valve sheets 2, the stiffness of the two groups of valve sheets is different. When the number of groups of valve sheets 2 exceeds two groups, at least two groups of valve sheets 2 have different stiffness. There may be only two groups of valve sheets 2 with different stiffness, or the stiffness of more than two groups of valve sheets 2 may be different, or the stiffness of each group of valve sheets 2 may be different.

[0056] When one group of valve plates 2 is used in conjunction with the exhaust hole 203, the other group of valve plates 2 is in a non-working state. One group of valve plates 2 used in conjunction with the exhaust hole 203 can cover and close the exhaust hole 203 under the action of the back pressure in the columnar hole 202 (when the back pressure is greater than the pressure in the compression chamber 201), and can open the exhaust hole 203 under the action of the pressure in the compression chamber 201 (when the pressure in the compression chamber 201 is greater than the back pressure), thereby closing or connecting the exhaust hole 203 on the cylinder 20, thereby realizing the compression and discharge of the gas in the compression chamber 201.

[0057] In general, for example, when the compressor 100 is running at a low speed, in order to reduce over-compression, it is desirable to use a thin valve plate 2 with low stiffness, which can improve the efficiency of the compressor 100; and when the compressor 100 is running at a high speed, it is desirable to use a thick valve plate 2 with high stiffness, which can improve the reliability of the compressor 100. At the same time, due to the high stiffness of the valve plate 2, the closing delay of the valve plate 2 is short at high speed, thereby improving the exhaust flow rate of the compressor 100 during high-frequency operation.

[0058] In the present application, by movably setting the fixed column 1 in the columnar hole 202, and setting multiple groups of valve plates 2 on the outer peripheral wall of the fixed column 1, the exhaust valve assembly 10 can be moved according to the operating conditions such as the operating speed or pressure of the compressor 100, so as to switch the use of valve plates 2 with different rigidity on the exhaust valve assembly 10 to be in a working state, thereby realizing that the compressor 100 has two or more working modes with better performance and reliability under different operating conditions such as speed or pressure. For example, when the compressor 100 is running at a low speed, a valve plate 2 with a smaller rigidity, such as a thinner thickness, is selected to improve the energy efficiency of the compressor 100; when the compressor 100 is running at a high speed, a valve plate 2 with a larger rigidity, such as a thicker thickness, is selected to improve the reliability and volumetric efficiency of the compressor 100, thereby achieving both the energy efficiency of the compressor 100 when running at a low speed and the improvement of the exhaust flow and reliability of the compressor 100 when running at a high speed, that is, having two working modes.

[0059] Of course, the exhaust valve assembly 10 can also realize more than two working modes, such as valve plate 2 specification 1 working mode (using thin valve plate 2 (thickness <0.3mm low rigidity), low speed <60rps operation mode), valve plate 2 specification 2 working mode (using thick valve plate 2 (thickness >0.3mm high rigidity), high speed >100rps operation mode), and no valve plate 2 unloading mode. Among them, the valve plate 2 can also have specification 3.

[0060] According to the exhaust valve assembly 10 of the embodiment of the utility model, the exhaust valve assembly 10 is movably arranged in the cylindrical hole 202 of the cylinder 20, and a plurality of groups of valve plates 2 are arranged on the outer peripheral wall of the fixed column 1, and the stiffness of at least two groups of valve plates 2 is different, so that a group of valve plates 2 with different stiffness can be switched to be used in a working state, and the compressor 100 can achieve two or more working modes with better performance and reliability under different working conditions such as speed or pressure, and one of the two or more working modes can be selected to operate, thereby meeting different requirements for the operation of the compressor 100 and ensuring the performance and reliability of the compressor 100.

[0061] In some embodiments of the present invention, Figure 6 As shown, one end of the valve sheet 2 in each group of valve sheets 2 along the circumferential direction of the fixed column 1 is connected to the fixed column 1, and the rest of the valve sheet 2 is spaced apart from the outer peripheral wall of the fixed column 1. A channel for gas to enter is defined between the valve sheet 2 and the outer peripheral wall of the fixed column 1, and the back pressure gas can enter the channel. When the back pressure is greater than the pressure in the compression chamber 201, the valve sheet 2 can be driven to move in a direction away from the fixed column 1, so that the valve sheet 2 blocks the exhaust hole 203. When the pressure in the compression chamber 201 is greater than the back pressure, the pressure in the compression chamber 201 drives the valve sheet 2 to move toward the fixed column 1, so that the valve sheet 2 opens the exhaust hole 203, and the gas in the compression chamber 201 is compressed and discharged.

[0062] In addition, one end of the valve disc 2 in each group of valve discs 2 along the circumferential direction of the fixing column 1 is connected to the fixing column 1, and the other end is spaced apart, which is convenient for fixing the valve disc 2 and deforming and moving the valve disc 2 under pressure.

[0063] Optionally, at least two groups of valve sheets 2 have different extension lengths, and / or different thicknesses, and / or different materials along the circumferential direction of the fixing column 1. It is understandable that at least one of the extension length, thickness and material of at least two groups of valve sheets 2 is different, so that the stiffness of at least two groups of valve sheets 2 is different.

[0064] For example, the two groups of valve sheets 2 may have only a different extension length and the other features are exactly the same, or only a different thickness and the other features are exactly the same, or only a different material and the other features are exactly the same, or both the extension length and thickness are different and the other features are exactly the same, or different extension length and material and the other features are exactly the same, or different thickness and material and the other features are exactly the same, or different extension length, thickness and material and the other features are exactly the same.

[0065] Specifically, when the fixed column 1 is cylindrical, and the valve sheet 2 extends along the circumferential direction of the fixed column 1 and one end along the circumferential direction is connected to the fixed column 1 and the other end is spaced apart, when the extension lengths are different, one group of valve sheets 2 can extend 1 / 2 of the length along the circumference of the fixed column 1, and the other group of valve sheets 2 can extend 1 / 4 of the length along the circumference of the fixed column 1. The valve sheets 2 with longer extension lengths have lower stiffness than the valve sheets 2 with shorter extension lengths and are easy to deform.

[0066] Furthermore, if Figure 7 and Figure 8 As shown, at least two groups of valve sheets 2 have different thicknesses, and each valve sheet 2 in each group of valve sheets 2 includes at least one layer of sub-valve sheets 21, and all sub-valve sheets 21 have the same thickness, and at least two groups of valve sheets 2 include sub-valve sheets 21 with different numbers of layers. Thus, the stiffness of the valve sheet 2 can be changed by changing the number of layers of the sub-valve sheets 21, and the thickness of each sub-valve sheet 21 is the same, so that the thickness of the valve sheet 2 is easily adjusted, and the stiffness of each group of valve sheets 2 is easily adjusted.

[0067] For example, in Figure 7 and Figure 8 In the example shown, the valve disc 2 is divided into two groups, namely, the first group of valve discs 2 and the second group of valve discs 2. The first group of valve discs 2 and the second group of valve discs 2 are arranged in the circumferential direction of the fixed column 1. The first group of valve discs 2 includes a layer of sub-valve discs 21, and the second group of valve discs 2 includes two layers of sub-valve discs 21. The thickness of the sub-valve discs 21 in the two groups of valve discs 2 is the same. In addition, one layer of sub-valve discs 21 in the first group and one layer of the two layers of sub-valve discs 21 in the second group of valve discs 2 are an integral part. For example, one layer of sub-valve discs 21 in the first group and one layer of the two layers of sub-valve discs 21 in the second group of valve discs 2 that are away from the fixed column 1 are an integral part. In this way, the structure of the exhaust valve assembly 10 can be simplified, and the production efficiency and assembly efficiency can be improved.

[0068] In some embodiments of the present invention, Figure 6 As shown, the valve plate 2 is connected to the fixing column 1 via a fastener 3. This simplifies the connection between the valve plate 2 and the fixing column 1 and improves the reliability of the connection between the valve plate 2 and the fixing column 1.

[0069] In some embodiments of the present invention, Figure 2 and Figure 5As shown, the exhaust valve assembly 10 further includes a driving device 4, which can be arranged on the cylinder 20, or on the upper bearing 30 and the lower bearing 40 on both sides of the cylinder 20. The driving device 4 is connected to the fixed column 1 to drive the fixed column 1 to be movably arranged in the columnar hole 202, so as to make one group of valve plates 2 face the exhaust hole 203 to open or close the exhaust hole 203 or to make all groups of valve plates 2 be spaced apart from at least part of the exhaust hole 203. This facilitates the switching of the exhaust valve assembly 10.

[0070] When one group of valve sheets 2 is opposite to the exhaust hole 203 to open or close the exhaust hole 203, the other groups of valve sheets 2 are in a non-working state. When all groups of valve sheets 2 are at least partially spaced apart from the exhaust hole 203, the exhaust hole 203 is in a normally open state, and the exhaust valve assembly 10 is in an unloaded state.

[0071] Alternatively, if Figure 2 and Figure 5 As shown, the driving device 4 is used to drive the fixed column 1 to rotate around the axis of the fixed column 1, and the multiple groups of valve plates 2 are arranged in the circumferential direction of the fixed column 1. Thus, by driving the fixed column 1 to rotate, the multiple groups of valve plates 2 can be switched. Figure 5 and Fig. 9 In the example shown, the first group of valve plates 2 and the second group of valve plates 2 are arranged in the circumferential direction of the fixed column 1, and the driving device 4 is used to drive the fixed column 1 to rotate, so that the first group of valve plates 2 or the second group of valve plates 2 are relative to the exhaust hole 203 to open or close the exhaust hole 203.

[0072] Among them, Figure 2 and Figure 5 As shown, when the driving device 4 drives the fixed column 1 to rotate around the axis of the fixed column 1, the driving device 4 may include a driving motor, and the output shaft of the driving motor is connected to one axial end of the fixed column 1. The output shaft of the driving motor may be directly connected or indirectly connected to one axial end of the fixed column 1. When the output shaft of the driving motor is indirectly connected to one axial end of the fixed column 1, a gear transmission mechanism may be provided between the output shaft of the driving motor and the fixed column 1. The driving motor may be a stepping motor.

[0073] Optionally, the driving device 4 is used to drive the fixed column 1 to move along the axis of the columnar hole 202, and the multiple groups of valve plates 2 are arranged in the axial direction of the fixed column 1. Thus, the multiple groups of valve plates 2 can be switched by driving the fixed column 1 to move.

[0074] Among them, when the driving device 4 drives the fixed column 1 to move along the axis of the columnar hole 202, a magnet is provided on the fixed column 1, and the driving device 4 includes an electromagnetic coil, which is sleeved outside the fixed column 1. The electromagnetic coil generates a magnetic field when it is energized, which can drive the fixed column 1 with the magnet to move along the axis of the columnar hole 202.

[0075] In addition, when the driving device 4 drives the fixed column 1 to move along the axis of the columnar hole 202, the two ends of the fixed column 1 in the axial direction have air cavities, and the driving device 4 includes an air pressure supply device, which is connected to the air cavity and is used to deliver the same pressure or different pressure gases to the two air cavities, and the air pressure supply device is connected to the exhaust port of the compressor 100 and the return port of the compressor 100. If the gas pressure delivered to the two axial ends of the fixed column 1 is the same, for example, the exhaust gas or return gas of the compressor 100 is delivered at the same time, the exhaust valve assembly 10 remains stationary along the axis of the columnar hole 202, and if the exhaust gas is delivered to one axial end of the fixed column 1 and the return gas is delivered to the other end, since the exhaust pressure is higher than the return gas pressure, the fixed column 1 moves along the axial direction of the columnar hole 202 toward the end that delivers the return gas.

[0076] In some embodiments of the utility model, there is one exhaust hole 203, and each group of valve plates 2 includes one valve plate 2, thereby simplifying the structure of the cylinder 20 and the structure of the exhaust valve assembly 10, simplifying the processing technology of the cylinder 20 and the exhaust valve assembly 10, improving production efficiency, and reducing production costs.

[0077] In other embodiments of the present invention, Figure 4 and Fig. 9 As shown, the exhaust holes 203 are multiple and spaced apart, and each group of valve plates 2 includes multiple valve plates 2 corresponding to the multiple exhaust holes 203, wherein the multiple exhaust holes 203 are spaced apart along the axial direction of the columnar hole 202 and / or spaced apart along the circumferential direction of the columnar hole 202. Thus, the exhaust efficiency of the compressor 100 can be improved.

[0078] For example, in Figure 4 and Fig. 9 In the example shown, there are multiple exhaust holes 203, specifically three, arranged at intervals along the axial direction of the columnar hole 202. Each group of valve plates 2 includes multiple valve plates 2 corresponding to the multiple exhaust holes 203, specifically three. The fixed column 1 is rotatably arranged in the columnar hole 202 along the axis of the fixed column 1. The multiple groups of valve plates 2 are arranged at intervals along the circumferential direction of the fixed column 1. The multiple valve plates 2 in each group of valve plates 2 are arranged or spaced apart along the axial direction of the fixed column 1.

[0079] Furthermore, if Figure 7 and Fig. 9 As shown, when the multiple valve sheets 2 of the same group are arranged in the axial direction of the fixed column 1, the fixed ends of the multiple valve sheets 2 of the same group are interconnected as a whole, and the free ends are arranged at intervals.

[0080] In addition, when the fixed column 1 is movably disposed in the column hole 202 along the axial direction of the column hole 202, the arrangement of the valve sheets 2 in each group of valve sheets 2 can be the same as Fig. 9 The examples shown are the same.

[0081] Optionally, when the exhaust holes 203 are multiple and spaced apart, and the multiple exhaust holes 203 are spaced apart along the circumferential direction of the columnar hole 202 , the multiple valve sheets 2 in each group of valve sheets 2 are arranged along the circumferential direction of the fixed column 1 .

[0082] In some embodiments of the present invention, Figure 5 and Figure 6 As shown, a connecting hole 11 extending in the axial direction of the fixing column 1 is provided in the fixing column 1, and an opening 12 connected to the connecting hole 11 is provided on the outer peripheral wall of the fixing column 1. The opening 12 is spaced apart from the valve plate 2, and the opening 12 can be opposite to and connected to the exhaust hole 203. When the opening 12 is opposite to and connected to the exhaust hole 203, the valve plate 2 and the exhaust hole 203 are at least partially spaced apart, and the gas in the exhaust hole 203 can enter the connecting hole 11 through the opening 12 and then be discharged, the exhaust hole 203 is in a normally open state, and the exhaust valve assembly 10 is in an unloaded state.

[0083] The compressor 100 according to an embodiment of the present invention is described below.

[0084] like Figure 1-Figure 4 As shown, the compressor 100 according to the embodiment of the present invention includes a housing 50 and a compression mechanism, the compression mechanism includes a cylinder 20, an upper bearing 30, a lower bearing 40 and the above-mentioned exhaust valve assembly 10, and the compression mechanism also includes a crankshaft 70.

[0085] Specifically, the cylinder 20 is disposed between the upper bearing 30 and the lower bearing 40, and has a compression chamber 201 and a columnar hole 202. The crankshaft 70 is passed through the upper bearing 30 and the lower bearing 40, and the crankshaft 70 has an eccentric portion, which is located in the compression chamber 201. The inner peripheral wall of the columnar hole 202 has an exhaust hole 203 that is connected to the compression chamber 201, and the columnar hole 202 is connected to the exhaust port on the compressor 100. The exhaust valve assembly 10 is movably disposed in the columnar hole 202, and each set of valve plates 2 can be selectively used to open or close the exhaust hole 203. When one group of valve plates 2 is used in conjunction with the exhaust hole 203, the other group of valve plates 2 is in a non-working state. One group of valve plates 2 used in conjunction with the exhaust hole 203 can cover and close the exhaust hole 203 under the action of the back pressure in the columnar hole 202 (when the back pressure is greater than the pressure in the compression chamber 201), and can open the exhaust hole 203 under the action of the pressure in the compression chamber 201 (when the pressure in the compression chamber 201 is greater than the back pressure), thereby closing or connecting the exhaust hole 203 on the cylinder 20, thereby realizing the compression and discharge of the gas in the compression chamber 201.

[0086] In the present application, by movably setting the fixed column 1 in the columnar hole 202, and setting multiple groups of valve plates 2 on the outer peripheral wall of the fixed column 1, the exhaust valve assembly 10 can be moved according to the operating conditions such as the operating speed or pressure of the compressor 100, so as to switch the use of valve plates 2 with different rigidity on the exhaust valve assembly 10 to be in a working state, thereby realizing that the compressor 100 has two or more working modes with better performance and reliability under different operating conditions such as speed or pressure. For example, when the compressor 100 is running at a low speed, a valve plate 2 with a smaller rigidity, such as a thinner thickness, is selected to improve the energy efficiency of the compressor 100; when the compressor 100 is running at a high speed, a valve plate 2 with a larger rigidity, such as a thicker thickness, is selected to improve the reliability and volumetric efficiency of the compressor 100, thereby achieving both the energy efficiency of the compressor 100 when running at a low speed and the improvement of the exhaust flow and reliability of the compressor 100 when running at a high speed, that is, having two working modes.

[0087] According to the compressor 100 of the embodiment of the utility model, by setting the above-mentioned exhaust valve assembly 10, the exhaust valve assembly 10 can be movably arranged in the columnar hole 202 of the cylinder 20, and a plurality of groups of valve plates 2 are arranged on the outer peripheral wall of the fixed column 1, and the stiffness of at least two groups of valve plates 2 is different, so that a group of valve plates 2 with different stiffness can be switched to be used in a working state, and the compressor 100 can achieve two or more working modes with better performance and reliability under different working conditions such as speed or pressure, and one of the two or more working modes can be selected to operate, thereby meeting the different requirements of the operation of the compressor 100 and ensuring the performance and reliability of the operation of the compressor 100.

[0088] In some embodiments of the present invention, Figure 2 As shown, the columnar hole 202 extends along the axial direction of the cylinder 20, and the exhaust valve assembly 10 also includes a driving device 4, which is connected to the fixed column 1 to drive the fixed column 1 to be movably arranged in the columnar hole 202, and the driving device 4 is located on the side of the lower bearing 40 away from the upper bearing 30 and is connected to the lower bearing 40. In this way, the structure on the cylinder 20 can be made more compact and reasonable, and it is convenient to set and fix the driving device 4. It should be noted that generally, a muffler 60 is arranged on the side of the upper bearing 30 away from the cylinder 20.

[0089] Of course, the present invention is not limited to this. The drive device 4 can also be located on the side of the upper bearing 30 away from the lower bearing 40 and connected to the upper bearing 30, thereby making the structure on the cylinder 20 more compact and reasonable, and facilitating the setting and fixing of the drive device 4.

[0090] In some embodiments of the present invention, the cylinder 20 is multiple and includes a first cylinder and a second cylinder, a middle partition is provided between the first cylinder and the second cylinder, and the columnar holes 202 in the first cylinder and the second cylinder extend along the axial direction of the cylinder 20 and are concentrically arranged. Therefore, when the drive device 4 is provided to drive the two exhaust valve assemblies 10 to move, one drive device 4 can be used to drive the two exhaust valve assemblies 10 to move at the same time, which is conducive to simplifying the structure of the compressor 100 and the number of parts, and is conducive to reducing the cost of the drive device 4.

[0091] Optionally, the fixed column 1 of the exhaust valve assembly 10 in the first cylinder and the fixed column 1 of the exhaust valve assembly 10 in the second cylinder are integrated, thereby realizing a linkage relationship between the first exhaust valve assembly 10 and the second exhaust valve assembly 10. When one exhaust valve assembly 10 is driven to move, the other exhaust valve assembly 10 moves synchronously, which is beneficial to simplifying the structure of the compressor 100 and the number of parts and components, and is beneficial to reducing the cost of the driving device 4. In addition, the assembly process between the fixed columns 1 of the two exhaust assemblies can also be simplified.

[0092] Optionally, the fixed column 1 of the exhaust valve assembly 10 in the first cylinder and the fixed column 1 of the exhaust valve assembly 10 in the second cylinder are split parts, thereby simplifying the processing method of the fixed parts of the exhaust valve assembly 10 and facilitating the assembly of the exhaust valve assembly 10. In addition, the fixed column 1 of the exhaust valve assembly 10 in the first cylinder and the fixed column 1 of the exhaust valve assembly 10 in the second cylinder move synchronously, wherein the fixed column 1 of the exhaust valve assembly 10 in the first cylinder and the fixed column 1 of the exhaust valve assembly 10 in the second cylinder are split parts and can be connected by fasteners, etc. In this way, the linkage relationship between the first exhaust valve assembly 10 and the second exhaust valve assembly 10 can be realized. When one of the exhaust valve assemblies 10 is driven to move, the other exhaust valve assembly 10 moves synchronously, which is conducive to simplifying the structure of the compressor 100 and the number of parts, and is conducive to reducing the cost of the drive device 4.

[0093] Optionally, the compressor 100 is a rotary compressor 100 , and the rotary compressor 100 includes a rolling piston compressor and a swing compressor.

[0094] The following describes a refrigeration device according to an embodiment of the utility model, wherein the refrigeration device may be an air conditioner, a refrigerator or a heat pump device.

[0095] The refrigeration device according to the embodiment of the present invention includes the compressor 100 mentioned above.

[0096] According to the refrigeration equipment of the embodiment of the utility model, by setting the above-mentioned compressor 100, the above-mentioned compressor 100 is set with the above-mentioned exhaust valve assembly 10, so that the exhaust valve assembly 10 can be movably arranged in the columnar hole 202 of the cylinder 20, and a plurality of groups of valve plates 2 are arranged on the outer peripheral wall of the fixed column 1, and the stiffness of at least two groups of valve plates 2 is different, so that a group of valve plates 2 with different stiffness can be switched to be used in a working state, and the compressor 100 can achieve two or more working modes with better performance and reliability under different working conditions such as speed or pressure, and one of the two or more working modes can be selected to operate, thereby meeting different requirements for the operation of the compressor 100 and ensuring the performance and reliability of the operation of the compressor 100, thereby improving the performance of the refrigeration equipment.

[0097] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0098] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An exhaust valve assembly, characterized in that: For a compressor, the compressor comprises a cylinder, the cylinder has a compression chamber and a cylindrical hole, the inner peripheral wall of the cylindrical hole has an exhaust hole connected to the compression chamber, the exhaust valve assembly is movably arranged in the cylindrical hole and comprises: A fixing column extending along the axial direction of the cylindrical hole; Multiple groups of valve plates are arranged on the outer peripheral wall of the fixing column, and at least two groups of valve plates have different rigidity. Each group of valve plates can be selectively used to open or close the exhaust hole.

2. The exhaust valve assembly according to claim 1, characterized in that One end of the valve sheet in each group of the valve sheets along the circumferential direction of the fixing column is connected to the fixing column, and the remaining part is spaced apart from the outer peripheral wall of the fixing column.

3. The exhaust valve assembly according to claim 2, characterized in that At least two groups of valve sheets have different extension lengths along the circumferential direction of the fixing column, and / or different thicknesses, and / or different materials.

4. The exhaust valve assembly according to claim 3, characterized in that At least two groups of valve sheets have different thicknesses, each valve sheet in each group of valve sheets includes at least one layer of sub-valve sheets, all sub-valve sheets have the same thickness, and at least two groups of valve sheets include different numbers of sub-valve sheets.

5. The exhaust valve assembly according to claim 1, characterized in that The valve plate is connected to the fixing column via a fastener.

6. The exhaust valve assembly according to claim 1, characterized in that Also includes: A driving device is connected to the fixed column to drive the fixed column to be movably disposed in the columnar hole, and is used to make one group of the valve plates opposite to the exhaust hole to open or close the exhaust hole or to make all groups of the valve plates be separated from at least part of the exhaust hole.

7. The exhaust valve assembly according to claim 6, characterized in that The driving device is used to drive the fixing column to rotate around the axis of the fixing column, and a plurality of groups of valve sheets are arranged in the circumferential direction of the fixing column.

8. The exhaust valve assembly according to claim 7, characterized in that The driving device comprises a driving motor, and an output shaft of the driving motor is connected to one axial end of the fixing column.

9. The exhaust valve assembly according to claim 6, characterized in that The driving device is used to drive the fixing column to move along the axis of the columnar hole, and the multiple groups of valve sheets are arranged in the axial direction of the fixing column.

10. The exhaust valve assembly according to claim 9, characterized in that The fixing column is provided with a magnet, and the driving device comprises an electromagnetic coil, and the electromagnetic coil is sheathed outside the fixing column; Alternatively, the fixed column has air cavities at both ends in the axial direction, and the driving device includes an air pressure supply device, which is connected to the air cavity and is used to deliver gases of the same pressure or different pressures to the two air cavities, and the air pressure supply device is connected to the exhaust port of the compressor and the return port of the compressor.

11. The exhaust valve assembly according to claim 1, characterized in that There is one exhaust hole, and each group of valve sheets includes one valve sheet; Alternatively, the exhaust holes are multiple and spaced apart, and each group of the valve sheets includes multiple valve sheets corresponding to the multiple exhaust holes, wherein the multiple exhaust holes are spaced apart along the axial direction of the columnar hole and / or spaced apart along the circumferential direction of the columnar hole.

12. The exhaust valve assembly according to claim 1, characterized in that The fixing column is provided with a connecting hole extending in the axial direction of the fixing column, and the outer peripheral wall of the fixing column is provided with an opening connected with the connecting hole, the opening is spaced apart from the valve sheet, and the opening can be opposite to and connected with the exhaust hole.

13. A compressor, characterized in that: include: A cylinder, an upper bearing and a lower bearing, wherein the cylinder is disposed between the upper bearing and the lower bearing, the cylinder has a compression chamber and a columnar hole, and an inner peripheral wall of the columnar hole has an exhaust hole connected to the compression chamber; According to the exhaust valve assembly according to any one of claims 1-12, the exhaust valve assembly is movably disposed in the cylindrical hole, and each group of the valve sheets can be selectively used to open or close the exhaust hole.

14. The compressor according to claim 13, characterized in that The columnar hole extends along the axial direction of the cylinder, and the exhaust valve assembly further includes a driving device, which is connected to the fixing column to drive the fixing column to be movably disposed in the columnar hole. The driving device is located on a side of the lower bearing away from the upper bearing and is connected to the lower bearing; Or the driving device is located on a side of the upper bearing facing away from the lower bearing and is connected to the upper bearing.

15. The compressor according to claim 13, characterized in that The cylinders are multiple and include a first cylinder and a second cylinder. A middle partition is provided between the first cylinder and the second cylinder. The columnar holes in the first cylinder and the second cylinder extend along the axial direction of the cylinder and are concentrically arranged.

16. The compressor according to claim 15, characterized in that The fixing column of the exhaust valve assembly in the first cylinder and the fixing column of the exhaust valve assembly in the second cylinder are integral or separate components.

17. The compressor according to claim 16, characterized in that The fixing post of the exhaust valve assembly in the first cylinder and the fixing post of the exhaust valve assembly in the second cylinder are separate parts and move synchronously.

18. The compressor according to claim 13, characterized in that The compressor is a rotary compressor.

19. A refrigeration device, characterized in that: Comprising a compressor according to any one of claims 13-18.

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