Cylinder body, air cylinder, compressor and air conditioner

Abstract

The invention provides a cylinder body, an air cylinder, a compressor and an air conditioner. The cylinder body is provided with a working cavity, a sliding sheet groove, a first exhaust notch and a second exhaust notch, the sliding sheet groove, the first exhaust notch and the second exhaust notch are all communicated with the working cavity, the cylinder body comprises an upper side in the axial direction of the cylinder body, and the first exhaust notch is formed in the upper side; the second exhaust notch is formed in the upper side; in the circumferential direction of the cylinder body, the first exhaust notch is formed in the position far away from the sliding piece groove relative to the second exhaust notch. The air cylinder comprises a cylinder body and an upper flange, the upper flange is connected with the upper side of the cylinder body in the axial direction of the cylinder body, and the cylinder body is adopted as the cylinder body. The upper flange comprises a first exhaust hole and a second exhaust hole, the first exhaust hole is communicated with the first exhaust notch, and the second exhaust hole is communicated with the second exhaust notch. The compressor includes a cylinder. The air conditioner comprises a compressor. The exhaust pressure loss is reduced on the premise of reducing the equipment manufacturing cost, and the energy efficiency of the compressor is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a cylinder block, a cylinder, a compressor and an air conditioner. Background Art

[0002] The air conditioner compressor pump body sucks low-pressure gaseous refrigerant into the cylinder and gradually compresses it into high-pressure gas, which is discharged through the flange exhaust hole. Fig.10 From the perspective of the refrigerant suction-compression-exhaust process, its indicated power loss is mainly divided into suction power loss W1, heat transfer, leakage, clearance power loss W2, exhaust power loss W3, W0 is the theoretical indicated power, and the sum of W0, W1, W2 and W3 is the actual indicated power under the compressor cycle. Exhaust power loss W3 often accounts for the largest proportion of the indicated power loss, which is mainly caused by the over-compression phenomenon caused by the gas in the cylinder being discharged through the flange exhaust hole, which leads to a large pressure loss.

[0003] The exhaust end of the existing rotary compressor is provided with a first exhaust hole on the upper flange, and correspondingly, the cylinder body is provided with a first exhaust cutout connected between the compression chamber and the first exhaust hole, and the upper flange is provided with a valve assembly to control the exhaust. When the cylinder displacement is large, the compressor operating frequency is high, or when the refrigerant with a large volume flow rate such as R290 is operating at a high frequency, only one exhaust hole often causes a large exhaust loss.

[0004] Another existing rotary compressor has two exhaust holes on the upper flange and the lower flange to reduce exhaust loss. Although this design effectively reduces exhaust loss, since part of the refrigerant is exhausted from the lower flange, it is often necessary to add a lower muffler on the lower flange and open a flow hole to guide the airflow to be discharged upward, which greatly increases the manufacturing cost. Summary of the invention

[0005] The first object of the present invention is to provide a cylinder block for constituting an upper flange double exhaust cylinder to reduce manufacturing costs.

[0006] The second object of the present invention is to provide an upper flange double exhaust cylinder to reduce manufacturing costs.

[0007] A third object of the present invention is to provide a compressor with reduced manufacturing costs.

[0008] A fourth object of the present invention is to provide an air conditioner with reduced manufacturing cost.

[0009] The first purpose of the present invention provides a cylinder body with a working chamber, a vane groove, a first exhaust cutout and a second exhaust cutout. The vane groove, the first exhaust cutout and the second exhaust cutout are all connected to the working chamber. In the axial direction of the cylinder body, the cylinder body includes an upper side, and the first exhaust cutout is arranged on the upper side; the second exhaust cutout is arranged on the upper side; in the circumferential direction of the cylinder body, the first exhaust cutout is arranged at a position away from the vane groove relative to the second exhaust cutout.

[0010] It can be seen from the above scheme that the cylinder body sets the first exhaust cutout and the second exhaust cutout on the upper side close to the upper flange, which can be combined with the upper flange on which the first exhaust hole and the second exhaust hole are set to form an upper flange double exhaust cylinder. There is no need to add a lower muffler to the lower flange, nor is there any need to open a flow hole in the lower flange to guide the airflow to discharge upward, thereby reducing the manufacturing cost of the equipment.

[0011] A further solution is that, viewed in the axial direction of the cylinder body, the diameter of the first exhaust cutout is smaller than the diameter of the second exhaust cutout.

[0012] It can be seen from the above that, correspondingly, the aperture of the second exhaust hole on the upper flange is larger than the aperture of the first exhaust space. In this way, during exhaust, the first valve plate corresponding to the first exhaust hole and the second valve plate corresponding to the second exhaust hole are opened at the same time. However, since the aperture of the second exhaust hole is larger, the second valve plate is open for a longer time. Therefore, the second valve plate should be used as the main exhaust valve plate, and the first valve plate is an early pressure relief valve to reduce the over-compression phenomenon of the compression chamber, reduce the exhaust pressure loss while reducing the equipment manufacturing cost, and improve the energy efficiency of the compressor.

[0013] A further solution is that, viewed in the axial direction of the cylinder body, the center line of the first exhaust cutout forms a first angle with the center line of the vane groove, and the first angle ranges from 40 degrees to 70 degrees; and / or, viewed in the axial direction of the cylinder body, the center line of the second exhaust cutout forms a second angle with the center line of the vane groove, and the second angle ranges from 5 degrees to 20 degrees.

[0014] As can be seen from the above, at this angle, first of all, it is ensured that both exhaust cutouts are located at the exhaust end of the working chamber, and the exhaust over-compression phenomenon can be effectively alleviated. In addition, the gas reflux problem needs to be considered. Specifically, when the valve assemblies corresponding to the two exhaust holes are opened, if the crankshaft crosses the first exhaust hole clockwise and the changed exhaust hole is still not closed in time, it will cause the first exhaust hole to begin to correspond to the low pressure of the suction chamber when the crankshaft continues to rotate forward. The exhaust pressure of the muffler corresponding to the back of the first exhaust hole is high pressure, which will cause the high-pressure refrigerant just discharged from the muffler to flow back to the low-pressure suction chamber through the first exhaust hole that has not been closed, causing refrigerant reflux, which will greatly reduce the cooling capacity of the compressor. Under this setting, the first exhaust cutout, the first exhaust hole and the first valve assembly are all closer to the second exhaust hole to form a better fit, so as to ensure that there will be no gas reflux problems during the opening process of the first valve assembly.

[0015] The cylinder provided by the second purpose of the present invention includes a cylinder body and an upper flange, the upper flange is connected to the upper side of the cylinder body along the axial direction of the cylinder body, and the cylinder body adopts the above-mentioned cylinder body; the upper flange includes a first exhaust hole and a second exhaust hole, the first exhaust hole is communicated with the first exhaust incision, and the second exhaust hole is communicated with the second exhaust incision.

[0016] A further solution is that it also includes a first valve assembly and a second valve assembly connected to the upper flange, the first valve assembly includes a first baffle and a first valve sheet, the second valve assembly includes a second baffle and a second valve sheet; the first valve sheet includes a first deformation portion located between the first baffle and the first exhaust hole, and the second valve sheet includes a second deformation portion located between the second baffle and the second exhaust hole; the aperture of the second exhaust hole is larger than the aperture of the first exhaust hole, and the stiffness of the second valve sheet is greater than the stiffness of the first valve sheet.

[0017] It can be seen from the above scheme that since the first valve plate and the second valve plate are opened at the same time during exhaust, but the second valve plate is opened for a longer time, the second valve plate should be used as the main exhaust valve plate, and the first valve plate is an early pressure relief valve to reduce the over-compression phenomenon of the compression chamber. The stiffness of the second valve plate should be greater than that of the first valve plate, and the diameter of the second exhaust hole should be greater than the diameter of the first exhaust hole.

[0018] A further solution is that the first deformation portion includes a first waist and a first head sequentially arranged along its length direction, and the first head includes a position between the first baffle and the first exhaust hole; the second deformation portion includes a second waist and a second head sequentially arranged along its length direction, and the second head includes a position between the second baffle and the second exhaust hole; the first thickness t1 of the first valve sheet, the first width b1 of the first waist, the first diameter d1 of the first head, the first length l1 of the first deformation portion, the second thickness t2 of the second valve sheet, the second width b2 of the second waist, the second diameter d2 of the second head, and the second length l2 of the second deformation portion meet the following conditions: In a further solution, the first diameter d3 of the first exhaust hole, the second diameter d4 of the second exhaust hole, the first lift h1 of the first baffle, and the second lift h2 of the second baffle meet the following conditions: .

[0019] As can be seen from the above, the first length l1 and the second length l2 refer to the distance from the top of the valve plate head to the starting point where the valve plate is constrained by the baffle; when the waist shape of a valve plate is a variable cross-section, the first width b1 and the second width b2 refer to the width of the narrowest part of the waist. Since the first exhaust hole is an auxiliary exhaust hole of the second exhaust hole, in addition to designing the circumferential distance between the first exhaust hole and the second exhaust hole, the associated design of various parameters is made according to the displacement requirements of the first exhaust hole and the second exhaust hole, and according to the size and stiffness of the first valve plate and the second valve plate, so that the above two exhaust holes can produce a better coordination effect.

[0020] A further solution is that the first valve plate includes a first base and a first wear-resistant coating portion, the first wear-resistant coating portion is arranged toward the first baffle plate; and / or the second valve plate includes a second base and a second wear-resistant coating portion, the second wear-resistant coating portion is arranged toward the second baffle plate.

[0021] It can be seen from the above that in order to deal with the over-compression phenomenon, the wear-resistant coating is combined to improve the wear resistance of the valve plate, thereby further ensuring the reliability of the valve assembly plate.

[0022] The third object of the present invention is to provide a compressor comprising a cylinder, and the compressor adopts the above-mentioned cylinder.

[0023] The fourth object of the present invention is to provide an air conditioner comprising a compressor, which is the above-mentioned compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axial view of the cylinder block, crankshaft and vane in the first embodiment of the cylinder of the present invention.

[0025] Figure 2 It is an axial view of the upper flange in the first embodiment of the cylinder of the present invention.

[0026] Figure 3 It is a cross-sectional view of the upper flange and the first valve assembly in the first embodiment of the cylinder of the present invention.

[0027] Figure 4 This is a structural diagram of the first valve plate in the first embodiment of the cylinder of the present invention.

[0028] Figure 5 It is a cross-sectional view of the upper flange and the second valve assembly in the first embodiment of the cylinder of the present invention.

[0029] Figure 6 This is a structural diagram of the second valve plate in the first embodiment of the cylinder of the present invention.

[0030] Figure 7 It is a cross-sectional schematic diagram of the second valve plate in the first embodiment of the cylinder of the present invention.

[0031] Figure 8 It is a cross-sectional schematic diagram of the second valve plate in the second embodiment of the cylinder of the present invention.

[0032] Fig. 9 This is a structural diagram of the first valve plate in the third embodiment of the cylinder of the present invention.

[0033] Fig.10 PV indicating loss diagram of a prior art compressor.

[0034] Fig.11 PV indicating loss diagram of the compressor embodiment of the present invention. DETAILED DESCRIPTION

[0035] Cylinder First Embodiment See also Figure 1 and Figure 2 The cylinder includes an upper flange 1, a cylinder body 2, a crankshaft 3 and a sliding vane 4, and of course, a lower flange not shown. Figure 1 and Figure 2 The upper flange 1 is connected to the upper side of the cylinder block 2 along the axial direction of the cylinder block 2 , the vane 4 is installed in the vane groove 400 of the cylinder block 2 , and the crankshaft 3 is arranged in the working chamber 200 of the cylinder block 2 .

[0036] The cylinder body 2 is provided with a working chamber 200, a vane groove 400, a first exhaust cutout 201 and a second exhaust cutout 202. The vane groove 400, the first exhaust cutout 201 and the second exhaust cutout 202 are all communicated with the working chamber 200. Furthermore, the working chamber 200 is a circular space in the center of the cylinder body 2. The vane groove 400 extends radially along the working chamber 200 and is communicated with the working chamber 200, and the center line 4001 of the vane groove 400 coincides with the center point of the working chamber 200.

[0037] In the axial direction of the cylinder body 2, the cylinder body 2 includes an upper side, Figure 1 The side shown is the upper side of the cylinder body 2; the first exhaust incision 201 and the second exhaust incision 202 are both arranged on the upper side of the cylinder body 2, and the intake sides of the first exhaust incision 201 and the second exhaust incision 202 are both connected with the working chamber 200 along the radial direction of the working chamber 200, and the exhaust sides of the first exhaust incision 201 and the second exhaust incision 202 are both connected with the exhaust structure of the upper flange 1 along the axial direction of the working chamber 200 and upward.

[0038] See also Figure 1 The first exhaust cutout 201 and the second exhaust cutout 202 both have arc contours. In fact, the arc lines of the first exhaust cutout 201 and the second exhaust cutout 202 are consistent with the circumferential line diameter and center of the corresponding exhaust hole on the upper flange 1 to ensure a tight connection between the cutout and the exhaust hole.

[0039] See also Figure 1, in the circumferential direction of the cylinder body 2, the first exhaust cutout 201 is arranged at a position far from the vane slot 400 relative to the second exhaust cutout 202. Specifically, the first exhaust cutout 201, the second exhaust cutout 202 and the vane slot 400 are arranged in a clockwise direction. In the axial direction of the cylinder body 2, the center line of the first exhaust cutout 201 and the center line of the vane slot 400 form a first angle a, and the value range of the first angle a is 40 degrees to 70 degrees; in the axial direction of the cylinder body 2, the center line of the second exhaust cutout 202 and the center line of the vane slot 400 form a second angle b, and the value range of the second angle b is 5 degrees to 20 degrees. In the axial direction of the cylinder body 2, the center line of the first exhaust cutout 201 is a line connecting the center of the arc of the first exhaust cutout 201 to the center point of the working chamber 200, and the center line of the second exhaust cutout 202 is a line connecting the center of the arc of the second exhaust cutout 202 to the center point of the working chamber 200. At this angle, the first exhaust cutout 201, the first exhaust hole 1011 and the first valve assembly are close enough to the second exhaust hole 1021 to form a better fit, so as to ensure that there will be no gas backflow problem during the opening process of the first valve assembly. In addition, in the axial direction of the cylinder body 2, the diameter of the first exhaust cutout 201 is smaller than the diameter of the second exhaust cutout 202.

[0040] See also Figure 2 The upper surface of the upper flange 1 is provided with a first groove 101 and a second groove 102 which are concave downward and extend in a straight line. The first groove 101 and the second groove 102 form an angle. The first exhaust hole 1011 and the first rivet hole 1012 are respectively provided at the two ends of the extension of the first groove 101. The second exhaust hole 1021 and the first rivet hole 1022 are respectively provided at the two ends of the extension of the second groove 102. The first exhaust hole 1011 and the second exhaust hole 1021 both penetrate the upper flange 1 along the axial direction of the upper flange 1. The axial direction of the upper flange 1 is consistent with the axial direction of the cylinder body. Among them, the first diameter d3 of the first exhaust hole 1011 is smaller than the second diameter d4 of the second exhaust hole 1021. In addition, Figure 1 Middle cylinder 2 and Figure 2 The middle upper flange 1 can be assembled along the axial direction without adjusting the azimuth along the circumferential direction, that is, the azimuth angles of the two are consistent. It can be seen that the first exhaust hole 1011 is at the same position as the first exhaust cutout 201, and the second exhaust hole 1021 is at the same position as the second exhaust cutout 202. After the cylinder body 2 is assembled with the upper flange 1, the first exhaust hole 1011 is communicated with the first exhaust cutout 201, and the second exhaust hole 1021 is communicated with the second exhaust cutout 202.

[0041] See also Figure 3 and Figure 4The cylinder further includes a first valve assembly and a second valve assembly connected to the upper flange 1. The first valve assembly includes a first baffle 6 and a first valve sheet 5. The first valve sheet 5 includes a first fixing portion 51 and a first deformation portion 52. The first deformation portion 52 further includes a first waist portion 502 and a first head portion 503 sequentially arranged along its length direction, that is, the first valve sheet 5 includes a first fixing portion 51, a first waist portion 502 and a first head portion 503 sequentially connected along its length direction. The first rivet 71 sequentially passes through the first baffle 6, the first fixing portion 51 and the first rivet hole 1012 to connect the three. The first head portion 503 on the first deformation portion 52 is located between the first baffle 6 and the first exhaust hole 1011.

[0042] See also Figure 5 and Figure 6 The second valve assembly includes a second baffle plate 9 and a second valve disc 8. The second valve disc 8 includes a second fixing portion 81 and a second deformation portion 82. The second deformation portion 82 includes a second waist portion 802 and a second head portion 803 sequentially arranged along its length direction. That is, the second valve disc 8 includes a second fixing portion 81, a second waist portion 802 and a second head portion 803 sequentially connected along its length direction. The second rivet 72 sequentially passes through the second baffle plate 9, the second fixing portion 81 and the second rivet hole 1022 to connect the three. The second head portion 803 on the second deformation portion 82 is located between the second baffle plate 9 and the second exhaust hole 1021.

[0043] In this way, the cylinder body 2 sets the first exhaust cutout 201 and the second exhaust cutout 202 on the upper side close to the upper flange 1, and cooperates with the first exhaust hole 1011 and the second exhaust hole 1021 of the upper flange 1 and the first valve assembly and the second exhaust assembly to form an upper flange double exhaust cylinder. There is no need to add a lower muffler to the lower flange, nor is there any need to open a flow hole in the lower flange to guide the airflow to discharge upward, thereby reducing the exhaust pressure loss and improving the energy efficiency of the compressor while reducing the equipment manufacturing cost.

[0044] See also Figures 3 to 6 , the first thickness t1 of the first valve plate 5, the first width b1 of the first waist 502, the first diameter d1 of the first head 503, the first length l1 of the first deformation portion 52, the second thickness t2 of the second valve plate 8, the second width b2 of the second waist 802, the second diameter d2 of the second head 803, and the second length l2 of the second deformation portion 82 meet the following conditions:

[0045] The first diameter d3 of the first exhaust hole 1011, the second diameter d4 of the second exhaust hole 1021, the first lift h1 of the first baffle 6, and the second lift h2 of the second baffle 9 meet the following conditions:

[0046] Among them, the first lift h1 of the first baffle plate 6 refers to the position of the center line of the first exhaust hole 1011, and the distance from the upper surface of the first deformation part 52 in the horizontal state to the lower surface of the first baffle plate 6; the second lift h2 of the second baffle plate 9 refers to the position of the center line of the second exhaust hole 1021, and the distance from the upper surface of the second deformation part 82 in the horizontal state to the lower surface of the second baffle plate 9.

[0047] When the waist shape of a valve plate is a variable cross-section, the first width b1 and the second width b2 refer to the width of the narrowest part of the waist. Since the first exhaust hole 1011 is used as an auxiliary exhaust hole of the second exhaust hole 1021, in addition to designing the circumferential distance between the first exhaust hole 1011 and the second exhaust hole 1021, the associated design of various parameters is made according to the displacement requirements of the first exhaust hole 1011 and the second exhaust hole 1021, and the size and stiffness of the first valve plate 5 and the second valve plate 8, so that the two exhaust holes can produce a better coordination effect.

[0048] In addition, since the first valve disc 5 and the second valve disc 8 are opened at the same time during exhaust, but the second valve disc 8 is open for a longer time due to its larger aperture, the second valve disc 8 should be used as the main exhaust valve disc, and the first valve disc 5 is an early pressure relief valve to reduce the over-compression phenomenon of the compression chamber. The stiffness of the second valve disc 8 is greater than that of the first valve disc 5.

[0049] See also Figure 7 , the second valve plate 8 includes a second base portion 88 and a second wear-resistant coating portion 89, and the second wear-resistant coating portion 89 is arranged toward the second baffle 9. Similarly, the first valve plate includes a first base portion and a first wear-resistant coating portion, and the first wear-resistant coating portion is arranged toward the first baffle. The second wear-resistant coating portion 89 and the first wear-resistant coating portion are both coated with nitriding, nitriding sulfurization or nitriding molybdenumization, etc. Under this setting, the second wear-resistant coating portion 89 and the first wear-resistant coating portion only include one wear-resistant layer.

[0050] See also Fig.11 And compare Fig.10 , the cylinder using this embodiment can effectively reduce the exhaust power loss W3.

[0051] The air conditioner of the present invention comprises a compressor, and the compressor of the present invention comprises the cylinder of the present embodiment. Of course, the compressor also comprises a shell and a motor, and both the shell and the motor can be implemented by the prior art.

[0052] Second embodiment of cylinder See also Figure 8In this embodiment, the second valve plate 8' includes a second base 88' and a second wear-resistant coating portion 89'. The second wear-resistant coating portion 89' adopts a DLC diamond-like carbon film coating. The second wear-resistant coating portion 89' includes a connecting layer 891, a supporting layer 892 and a functional wear-resistant layer 893 which are sequentially arranged from the second base 88' to the outside.

[0053] The first wear-resistant coating portion of the first valve plate is also coated with a DLC diamond-like carbon film.

[0054] Cylinder third embodiment See also Fig. 9 In this embodiment, when the waist shape of the first valve plate or the second valve plate is a variable cross-section, the first width b1 or the second width b2 refers to the width of the narrowest part of the waist.

[0055] Finally, it should be emphasized that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A cylinder body, provided with a working chamber, a vane groove, a first exhaust cutout and a second exhaust cutout, wherein the vane groove, the first exhaust cutout and the second exhaust cutout are all communicated with the working chamber, and in the axial direction of the cylinder body, the cylinder body includes an upper side, and the first exhaust cutout is arranged on the upper side; Features: The second exhaust cutout is arranged on the upper side; and in the circumferential direction of the cylinder body, the first exhaust cutout is arranged at a position away from the sliding vane groove relative to the second exhaust cutout.

2. The cylinder according to claim 1, characterized in that: Viewed in the axial direction of the cylinder body, a diameter of the first exhaust cutout is smaller than a diameter of the second exhaust cutout.

3. The cylinder according to claim 1 or 2, characterized in that: Viewed in the axial direction of the cylinder body, the center line of the first exhaust cutout and the center line of the vane groove form a first angle, and the value range of the first angle is 40 degrees to 70 degrees; and / or, Viewed in the axial direction of the cylinder body, a center line of the second exhaust cutout forms a second angle with a center line of the vane groove, and a value range of the second angle is 5 degrees to 20 degrees.

4. A cylinder, comprising a cylinder body and an upper flange, wherein the upper flange is connected to the upper side of the cylinder body along the axial direction of the cylinder body, characterized in that: The cylinder body adopts the cylinder body according to any one of claims 1 to 3 above; The upper flange includes a first exhaust hole and a second exhaust hole, the first exhaust hole is communicated with the first exhaust cutout, and the second exhaust hole is communicated with the second exhaust cutout.

5. The cylinder according to claim 4, characterized in that: Also included are a first valve assembly and a second valve assembly connected to the upper flange, wherein the first valve assembly includes a first baffle plate and a first valve sheet, and the second valve assembly includes a second baffle plate and a second valve sheet; The first valve plate includes a first deformation portion located between the first baffle plate and the first exhaust hole, and the second valve plate includes a second deformation portion located between the second baffle plate and the second exhaust hole; The aperture of the second exhaust hole is larger than that of the first exhaust hole, and the rigidity of the second valve sheet is larger than that of the first valve sheet.

6. The cylinder according to claim 5, characterized in that: The first deformation portion includes a first waist portion and a first head portion sequentially arranged along its length direction, and the first head portion is located between the first baffle and the first exhaust hole; The second deformation portion includes a second waist portion and a second head portion sequentially arranged along its length direction, and the second head portion is located between the second baffle plate and the second exhaust hole; The first thickness t1 of the first valve sheet, the first width b1 of the first waist, the first diameter d1 of the first head, the first length l1 of the first deformation portion, the second thickness t2 of the second valve sheet, the second width b2 of the second waist, the second diameter d2 of the second head, and the second length l2 of the second deformation portion meet the following conditions: 。 7. The cylinder according to claim 6, characterized in that: The first diameter d3 of the first exhaust hole, the second diameter d4 of the second exhaust hole, the first lift h1 of the first baffle, and the second lift h2 of the second baffle meet the following conditions: 。 8. The cylinder according to any one of claims 5 to 7, characterized in that: The first valve plate includes a first base portion and a first wear-resistant coating portion, and the first wear-resistant coating portion is disposed toward the first baffle; and / or, The second valve plate includes a second base portion and a second wear-resistant coating portion, and the second wear-resistant coating portion is disposed toward the second baffle.

9. A compressor comprising a cylinder, characterized in that The compressor adopts the cylinder described in any one of claims 4 to 8.

10. An air conditioner comprising a compressor, characterized in that The compressor is the compressor according to claim 9.

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