Compressor and refrigeration equipment

Abstract

The compressor comprises a shell and a pump body assembly arranged in the shell, the pump body assembly comprises an air cylinder and an upper flange, the upper flange comprises a flange part and a connecting part connected with the peripheral face of the flange part, and the flange part is connected with the air cylinder and provided with an exhaust hole. The connecting part is provided with at least two welding spots and oil return holes, the welding spot with the minimum distance from the exhaust hole is a first welding spot, the other welding spots are second welding spots, the oil return hole with the minimum distance from the exhaust hole is a first oil return hole, the other oil return holes are second oil return holes, and the oil return holes are arranged along the radial direction of the flange part. The first oil return hole is located between the first welding spot and the exhaust hole and is arranged in the circumferential direction of the flange part, the second welding spot and the second oil return hole are arranged in a staggered mode, the minimum included angle between the connecting line of the first welding spot and the center of the flange part and the connecting line of the exhaust hole and the center of the flange part is alpha 1, and alpha 1 is smaller than or equal to 40 degrees. And the welding strength of the upper flange can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and particularly relates to a compressor and a refrigeration device. Background Art

[0002] A compressor includes a housing and a pump body assembly. The pump body assembly is installed in the housing. The pump body assembly includes components such as an upper flange, a lower flange, a cylinder, and a crankshaft. In the compressor, the upper flange is fixed to the housing by welding. Moreover, the upper flange plays a role in supporting the crankshaft, and it is necessary to ensure that the upper flange has good rigidity. During the operation of the compressor, the position of the upper flange near the exhaust hole is subjected to greater force, and it is necessary to weld the position of the outer peripheral surface of the upper flange near the exhaust hole to the housing. In order to improve the welding strength of the upper flange, generally one of the welding points is designed around the exhaust hole to reduce the distance between the welding point and the exhaust hole. However, during the welding process, the thermal deformation of the upper flange easily squeezes the exhaust hole to cause deformation, and the exhaust resistance of the exhaust hole increases, resulting in an increase in the noise during the operation of the compressor. Summary of the Utility Model

[0003] The utility model aims to at least solve one of the technical problems existing in the prior art. For this purpose, the utility model provides an upper flange that can not only improve the welding strength of the upper flange but also avoid the deformation of the exhaust hole.

[0004] The utility model also provides a refrigeration device having the above compressor.

[0005] According to an embodiment of the first aspect of the utility model, a compressor includes:

[0006] A housing;

[0007] A pump body assembly disposed in the housing. The pump body assembly includes a cylinder and an upper flange. The upper flange includes a flange portion and a connecting portion connected to the outer peripheral surface of the flange portion. The flange portion is connected to the cylinder and is provided with an exhaust hole. There are at least two welding points between the connecting portion and the inner peripheral surface of the housing. The welding point with the smallest distance from the exhaust hole is the first welding point, and the remaining welding points are the second welding points. The connecting portion is provided with at least two oil return holes spaced circumferentially along the flange portion. The oil return hole with the smallest distance from the exhaust hole is the first oil return hole, and the remaining oil return holes are the second oil return holes;

[0008] Along the radial direction of the flange portion, the first oil return hole is located between the first welding point and the exhaust hole. Along the circumferential direction of the flange portion, the second welding points and the second oil return holes are staggered. The minimum included angle between the line connecting the first welding point and the center of the flange portion and the line connecting the exhaust hole and the center of the flange portion is α1, satisfying: α1 ≤ 40°.

[0009] The compressor according to the embodiment of the present utility model has at least the following beneficial effects:

[0010] By reasonably setting the minimum included angle between the connecting line of the first solder joint and the center of the flange part and the connecting line of the exhaust hole and the center of the flange part, that is, α1≤40°, the deformation of the flange part around the exhaust hole can be reduced, so as to improve the stiffness of the upper flange, thereby improving the welding strength between the upper flange and the housing; at the same time, since the first oil return hole is located between the first solder joint and the exhaust hole, the first oil return hole can prevent the welding heat of the first solder joint from directly transferring to the side wall of the exhaust hole, so as to avoid the situation that the thermal deformation at the first solder joint squeezes the exhaust hole to cause deformation and increase the exhaust resistance of the exhaust hole, thereby reducing the noise during the operation of the compressor.

[0011] According to some embodiments of the present utility model, the maximum outer diameter of the upper flange is D1, the distance between the center of each oil return hole and the center of the flange part is D2 / 2, and the maximum width of the oil return hole along the radial direction of the flange part is B1, satisfying: 2.5≤D1 / B1≤13, 0.15≤D2 / D1≤0.5.

[0012] According to some embodiments of the present utility model, the maximum width of the oil return hole along the radial direction of the flange part is B1, and the maximum thickness of the flange part along the axial direction of the flange part is B2, satisfying: 0.2≤B1 / B2≤0.9.

[0013] According to some embodiments of the present utility model, the minimum interval between adjacent oil return holes corresponding to the center of the flange part is α2, satisfying: α2≥15°.

[0014] According to some embodiments of the present utility model, the surface of the flange part connected to one side of the cylinder is the first surface, the area of the first surface is S1, and the total area of all the oil return holes is S m , satisfying: 0.2≤S m / S1≤0.5.

[0015] According to some embodiments of the present utility model, the minimum interval between adjacent solder joints corresponding to the center of the flange part is α3, satisfying: α3≥45°.

[0016] According to some embodiments of the present utility model, the surface of the connecting part close to one side of the cylinder is the second surface, the area of the second surface is S2, and the total area of all the oil return holes is S m , satisfying: 0.2≤S m / S2≤0.4.

[0017] According to some embodiments of the present utility model, the area of the first oil return hole is larger than the area of each second oil return hole.

[0018] According to some embodiments of the present utility model, the displacement of the compressor is C, and the total area of at least two of the oil return holes is S m , satisfying: 5 ≤ S m / C ≤ 17.

[0019] The refrigeration device according to the embodiment of the second aspect of the present utility model includes the compressor described in the above embodiments.

[0020] The refrigeration device according to the embodiment of the present utility model has at least the following beneficial effects:

[0021] By using the compressor of the first aspect embodiment of the present utility model, by reasonably setting the minimum included angle between the line connecting the first solder joint and the center of the flange portion and the line connecting the exhaust hole and the center of the flange portion, that is, α1 ≤ 40°, the deformation of the flange portion around the exhaust hole can be reduced, so as to improve the stiffness of the upper flange, thereby improving the welding strength between the upper flange and the housing; at the same time, since the first oil return hole is located between the first solder joint and the exhaust hole, the first oil return hole can prevent the welding heat of the first solder joint from directly transferring to the side wall of the exhaust hole, so as to avoid the situation that the thermal deformation at the first solder joint squeezes the exhaust hole to cause deformation and increase the exhaust resistance of the exhaust hole, thereby reducing the noise during the operation of the compressor.

[0022] The additional aspects and advantages of the present utility model will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present utility model. Description of the Drawings

[0023] The following will further illustrate the present utility model in conjunction with the drawings and embodiments, where:

[0024] Figure 1 is the front view of the upper flange of an embodiment of the present utility model;

[0025] Figure 2 is Figure 1 the cross-sectional view taken along line A-A in

[0026] Figure 3 is the internal structure schematic diagram of the pump body assembly of an embodiment of the present utility model;

[0027] Figure 4 is the internal structure schematic diagram of the compressor of an embodiment of the present utility model.

[0028] Reference Numerals in the Drawings:

[0029] Shell 100, pump body assembly 200, cylinder 210, compression chamber 211, upper flange 220, flange portion 221, exhaust hole 2211, first shaft hole 2212, connecting portion 222, first oil return hole 2221, second oil return hole 2222, first solder joint 2223, second solder joint 2224, lower flange 230, second shaft hole 231, main shaft portion 241, auxiliary shaft portion 242, eccentric portion 243, roller 250. Detailed implementation manners

[0030] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the accompanying drawings, in which 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 only for explaining the present utility model and should not be construed as a limitation to the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as up and down, etc., is based on the orientation or positional relationship shown in the accompanying drawings. It is 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 should not be construed as a limitation to the present utility model.

[0032] In the description of the present utility model, "a plurality of" means more than two. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0033] In the description of the present utility model, unless otherwise clearly defined, terms such as "set", "installed", "connected", etc. should be understood in a broad sense. Those skilled in the relevant technical field can reasonably determine the specific meanings of the above terms in the present utility model in combination with the specific content of the technical solution.

[0034] In the related art, a compressor includes a shell and a pump body assembly. The pump body assembly is installed in the shell. The pump body assembly includes components such as an upper flange, a lower flange, a cylinder, and a crankshaft. In the compressor, the upper flange is fixed to the shell by welding. Moreover, the upper flange plays a role in supporting the crankshaft, and it is necessary to ensure that the upper flange has good rigidity. During the operation of the compressor, the position of the upper flange near the exhaust hole is subjected to greater force, and it is necessary to weld the position of the outer peripheral surface of the upper flange near the exhaust hole to the shell. In order to improve the welding strength of the upper flange, generally one of the solder joints is designed around the exhaust hole to reduce the distance between the solder joint and the exhaust hole. However, during the welding process, the thermal deformation of the upper flange easily squeezes the exhaust hole to cause deformation, and the exhaust resistance of the exhaust hole increases, resulting in an increase in the noise during the operation of the compressor.

[0035] Based on this, referring to Figures 1 to 4 , Figure 1 which is the front view of the upper flange 220 of an embodiment of the present utility model, Figure 2 and Figure 1 is the sectional view taken along line A-A in Figure 3 which is the schematic diagram of the internal structure of the pump body assembly 200 of an embodiment of the present utility model, Figure 4 which is the schematic diagram of the internal structure of a compressor of an embodiment of the present utility model. As shown in the figure, the present utility model provides a compressor, which includes a housing 100 and a pump body assembly 200 disposed within the housing 100. The pump body assembly 200 includes an upper flange 220, a lower flange 230, and a cylinder 210 disposed between the upper flange 220 and the lower flange 230. The upper flange 220 includes a flange portion 221 and a connecting portion 222. The flange portion 221 is connected to the cylinder 210 and is provided with an exhaust hole 2211. The connecting portion 222 is connected to the outer peripheral surface of the flange portion 221, and the connecting portion 222 extends circumferentially along the flange portion 221. The connecting portion 222 is welded to the inner peripheral surface of the housing 100. Three welding points are provided on the outer peripheral surface of the connecting portion 222, and the three welding points are spaced apart at intervals along the circumferential direction of the flange portion 221. Among the three welding points, the welding point with the smallest distance from the exhaust hole 2211 is the first welding point 2223, and the remaining two welding points are the second welding points 2224. The minimum included angle between the line connecting the first welding point 2223 and the center of the flange portion 221 and the line connecting the exhaust hole 2211 and the center of the flange portion 221 is α1. By reasonably setting the minimum included angle between the line connecting the first welding point 2223 and the center of the flange portion 221 and the line connecting the exhaust hole 2211 and the center of the flange portion 221, that is, α1 ≤ 40°, the deformation of the flange portion 221 and the connecting portion 222 around the exhaust hole 2211 can be reduced, so as to improve the welding strength of the upper flange 220, reduce the torsional deformation of the upper flange 220, and thus improve the overall rigidity of the pump body assembly 200.

[0036] It should be noted that during the operation of the compressor, the stress around the exhaust hole 2211 is relatively large. When the minimum included angle between the line connecting the first welding point 2223 and the center of the flange portion 221 and the line connecting the exhaust hole 2211 and the center of the flange portion 221 is greater than 40°, the distance between the first welding point 2223 and the exhaust hole 2211 is too far, the moment received by the first welding point 2223 is too large, and the first welding point 2223 is prone to cracking. On the one hand, it leads to insufficient welding strength of the upper flange 220. On the other hand, abnormal situations such as refrigerant leakage are likely to occur, affecting the refrigeration performance of the compressor.

[0037] It should be pointed out that the three welding points are evenly spaced along the circumferential direction of the flange portion 221, and the included angle between adjacent welding points is equal, which can ensure the welding strength between the upper flange 220 and the housing 100.

[0038] It should be pointed out that when the minimum angle between the line connecting the first welding point 2223 and the center of the flange portion 221 and the line connecting the exhaust hole 2211 and the center of the flange portion 221 is 0°, the line connecting the first welding point 2223 and the center of the flange portion 221 and the line connecting the exhaust hole 2211 and the center of the flange portion 221 are collinear, and when the minimum angle between the line connecting the first welding point 2223 and the center of the flange portion 221 and the line connecting the exhaust hole 2211 and the center of the flange portion 221 is greater than 0° and less than or equal to 40°, the line connecting the first welding point 2223 and the center of the flange portion 221 can be located on the left and right sides of the line connecting the exhaust hole 2211 and the center of the flange portion 221, which is not described in detail here.

[0039] It should be noted that the number of welding points can also be configured to be two, four, five or six, etc., which is not limited here.

[0040] It is understandable that if the interval angle between adjacent welding points is too small, the heat generated by the adjacent welding points is easily accumulated during the welding process, and the thermal effect is concentrated, resulting in large thermal deformation of the upper flange 220, affecting the working performance of the compressor. Based on this, in this embodiment, the minimum interval angle between adjacent welding points is α3. By reasonably designing the minimum interval angle between adjacent welding points, that is, α3 ≥ 45°, the heat accumulation during welding of adjacent welding points can be avoided, so as to reduce the thermal deformation of the upper flange 220, thereby improving the working performance of the compressor.

[0041] For example Figure 1 As shown, in this embodiment, the connecting portion 222 is provided with six oil return holes, and the six oil return holes are arranged at intervals along the circumference of the flange portion 221, with the oil return hole with the smallest distance from the exhaust hole 2211 being the first oil return hole 2221, and the remaining oil return holes are the second oil return holes 2222. Along the radial direction of the flange portion 221, the first oil return hole 2221 is located between the first welding point 2223 and the exhaust hole 2211, so that the first oil return hole 2221 can prevent the welding heat of the first welding point 2223 from being directly transferred to the side wall of the exhaust hole 2211, so as to avoid the thermal deformation at the first welding point 2223 from squeezing the exhaust hole 2211 to deform, resulting in an increase in the exhaust resistance of the exhaust hole 2211, thereby reducing the noise during the operation of the compressor.

[0042] Moreover, along the circumference of the flange portion 221, the second welding point 2224 and the second oil return hole 2222 are staggered, that is, the second welding point 2224 is located between adjacent second oil return holes 2222, which can reduce the occurrence of the side wall of the second oil return hole 2222 being welded through, thereby ensuring the welding strength between the upper flange 220 and the shell 100.

[0043] It should be noted that the number of the oil return holes can be two, three or four, etc., which is not limited here. The area of ​​each oil return hole can be equal or unequal, which is not limited here.

[0044] It should be noted that the line connecting the center of the exhaust hole 2211 and the center of the flange portion 221 rotates around the center of the flange portion 221 to form a first radial line E at the edge on one side of the first oil return hole 2221, and the line connecting the center of the exhaust hole 2211 and the center of the flange portion 221 rotates around the center of the flange portion 221 to form a second radial line F at the edge on the other side of the first oil return hole 2221. The fact that the first oil return hole 2221 is located between the first solder joint 2223 and the exhaust hole 2211 means that the exhaust hole 2211 is provided in the fan-shaped area of the flange portion 221 between the first radial line E and the second radial line F, and the first solder joint 2224 is provided in the fan-shaped ring area of the connecting portion 222 between the first radial line E and the second radial line F.

[0045] It can be understood that when the compressor operates, the high-pressure refrigerant in the cylinder 210 is discharged from the exhaust hole 2211. Since the distance between the center of the first oil return hole 2221 and the center of the exhaust hole 2211 is the shortest, the high-pressure refrigerant has a sucking effect on the lubricating oil around the first oil return hole 2221, resulting in the lubricating oil around the first oil return hole 2221 not being able to flow back to the oil sump smoothly, affecting the lubrication system of the compressor. In this embodiment, the oil return hole is configured as a circumferential waist-shaped hole. Among the multiple oil return holes, the area of the first oil return hole 2221 is the largest, and the area of the first oil return hole 2221 is larger than the areas of the remaining second oil return holes 2222. The areas of the remaining second oil return holes 2222 can be equal or unequal. By increasing the area of the first oil return hole 2221, the lubricating oil around the first oil return hole 2221 can flow back to the oil sump smoothly, so as to ensure the normal operation of the compressor and extend the service life of the compressor.

[0046] For example Figure 1 As shown, in this embodiment, in the circumferential direction of the flange portion 221, the minimum interval between adjacent oil return holes corresponds to an angle α2 with respect to the center of the flange portion 221. By reasonably limiting the angle α2 corresponding to the minimum interval between adjacent oil return holes with respect to the center of the flange portion 221, that is, α2≥15°, the structural strength of the upper flange 220 can be effectively ensured, thereby improving the stiffness of the upper flange 220.

[0047] For example, the connecting portion 222 has a separating section located between adjacent oil return holes. The connecting portion 222 is connected to the flange portion 221 through the separating section. During the operation of the compressor, the separating section bears a large acting force. When the minimum interval between adjacent oil return holes corresponding to the center of the flange portion 221 is less than 15°, the width of the separating section is too small, and the separating section is prone to breakage, resulting in a reduction in the stiffness of the upper flange 220. Therefore, by defining that the minimum interval between adjacent oil return holes corresponding to the center of the flange portion 221 is greater than or equal to 15°, the structural strength of the upper flange 220 can be effectively ensured, thereby improving the stiffness of the upper flange 220.

[0048] It can be understood that the total area of all the oil return holes affects the oil return capacity of the compressor. The larger the total area of all the oil return holes, the more conducive it is to the oil return of the compressor, thereby ensuring that during the operation of the compressor, the rollers 250 and the sliding vanes have sufficient lubricating oil for lubrication, reducing frictional losses. However, when the size of the maximum outer diameter of the upper flange 220 is fixed, the increase in the total area of all the oil return holes results in a reduction in the stiffness of the upper flange 220, making it unable to effectively support the crankshaft and easily causing the failure of the pump body assembly 200.

[0049] Based on this, in this embodiment, the maximum outer diameter of the connecting portion 222 is D1, the distance from the center of each oil return hole to the center of the flange portion 221 is D2 / 2, and the maximum width of the oil return hole along the radial direction of the flange portion 221 is B1. By correlating the maximum outer diameter of the connecting portion 222, the distance from the center of the oil return hole to the center of the flange portion 221, and the maximum width of the oil return hole along the radial direction of the flange portion 221, a rational ratio setting is adopted for the maximum outer diameter of the connecting portion 222 and the distance from the center of the oil return hole to the center of the flange portion 221, that is, 0.15 ≤ D2 / D1 ≤ 5, and a rational ratio setting is adopted for the maximum outer diameter of the connecting portion 222 and the maximum width of the oil return hole along the radial direction of the flange portion 221, that is, 2.5 ≤ D1 / B1 ≤ 13. On the one hand, it can ensure the area of the oil return hole to improve the oil return capacity of the upper flange 220 and ensure that the lubricating oil can smoothly flow back into the compressor. On the other hand, it can improve the stiffness of the upper flange 220 so that the upper flange 220 can stably support the crankshaft and reduce the noise during the operation of the compressor.

[0050] It should be noted that the maximum width of the oil return hole along the radial direction of the flange portion 221 refers to the maximum distance between two points on the side wall of the oil return hole in the radial direction of the flange portion 221. For example, when the oil return hole is a circular hole, the maximum width of the oil return hole along the radial direction of the flange portion 221 is the diameter of the oil return hole. When the oil return hole is a kidney-shaped hole, the maximum width of the oil return hole along the radial direction of the flange portion 221 is the maximum distance between the opposite side walls of the oil return hole in the radial direction of the flange portion 221.

[0051] It can be understood that when D2 / D1 is equal to 0.5, half of the maximum outer diameter of the connecting portion 222 is equal to the distance between the center of the oil return hole and the center of the flange portion 221. At this time, the oil return hole penetrates through to the outer peripheral surface of the connecting portion 222, and the lubricating oil located on the inner peripheral surface of the housing 10 can directly flow back to the oil sump through the oil return hole, which is beneficial to the return of the lubricating oil.

[0052] For example, the maximum width of the oil return hole along the radial direction of the flange portion 221 increases as the maximum outer diameter of the connecting portion 222 increases. By setting a reasonable ratio for the maximum outer diameter of the connecting portion 222 and the maximum width of the oil return hole along the radial direction of the flange portion 221, that is, 2.5 ≤ D1 / B1 ≤ 13, within this range, the area of the oil return hole can be ensured, which is beneficial to the return of the lubricating oil.

[0053] For example Figure 1 、 Figure 2 As shown, in this embodiment, the maximum thickness of the flange portion 221 along the axial direction of the flange portion 211 is B2. By correlating the maximum width of the oil return hole along the radial direction of the flange portion 221 and the maximum thickness of the flange portion 221 along the axial direction of the flange portion 211, a reasonable ratio is set for the maximum width of the oil return hole along the radial direction of the flange portion 221 and the maximum thickness of the flange portion 221 along the axial direction of the flange portion 211, that is, 0.2 ≤ B1 / B2 ≤ 0.9. Within this range, both the stiffness of the upper flange 220 can be ensured and the weight of the upper flange 220 can be reduced, thereby reducing the production and manufacturing cost of the upper flange 220. For example, the value of B1 / B2 can be 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, etc., which is not limited here.

[0054] It can be understood that the maximum thickness of the flange portion 221 along the axial direction of the flange portion 211 is positively correlated with the stiffness of the upper flange 220, that is, the greater the maximum thickness of the flange portion 221 along the axial direction of the flange portion 211, the stronger the stiffness of the upper flange 220. During the operation of the compressor, the thermal deformation of the flange portion 221 is smaller. However, the greater the maximum thickness of the flange portion 221 along the axial direction of the flange portion 211, the greater the weight of the upper flange 220 and the higher the production and manufacturing cost of the upper flange 220. For example, when B1 / B2 is less than 0.2, with the maximum width of the oil return hole being reasonable, the maximum thickness of the flange portion 221 along the axial direction of the flange portion 211 is too small, and during the operation of the compressor, the thermal deformation of the flange portion 221 is too large, which is likely to cause refrigerant leakage and affect the refrigeration performance of the compressor. When B1 / B2 is greater than 0.9, with the maximum width of the oil return hole being reasonable, the maximum thickness of the flange portion 221 along the axial direction of the flange portion 211 is too large, the weight of the upper flange 220 is greater, and the production and manufacturing cost of the upper flange 220 is higher.

[0055] In this embodiment, the surface of the flange portion 221 connected to one side of the cylinder 210 is the first surface, the area of the first surface is S1, and the total area of all the oil return holes is S m , by correlating the area of the first surface and the total area of all the oil return holes and setting a reasonable ratio, that is, 0.2 ≤ S m / S1 ≤ 0.5, it can not only ensure the total area of the oil return holes, but also ensure the stiffness of the upper flange 220, reduce the degree of torsional deformation of the upper flange 220, thereby reducing the vibration and noise of the compressor. For example, the value of S m / S1 can be 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, etc., which is not limited herein.

[0056] For example, when S m / S1 is less than 0.2, with the area of the first surface being constant, the total area of all the oil return holes is too small, which is not conducive to the oil return of the compressor, increases the frictional loss, and affects the service life of the compressor. When S m / S1 is greater than 0.5, with the area of the first surface being constant, the total area of all the oil return holes is too large, resulting in a decrease in the stiffness of the upper flange 220, an increase in the degree of torsional deformation of the upper flange 220, and an increase in the noise of the compressor. When S m / S1 is greater than or equal to 0.2 and less than or equal to 0.5, it can not only ensure the total area of all the oil return holes, but also ensure the stiffness of the upper flange 220, reduce the degree of torsional deformation of the upper flange 220, thereby reducing the vibration and noise of the compressor.

[0057] It should be noted that, for example Figure 3 as shown, the pump body assembly 200 further includes a crankshaft and a roller 250. The crankshaft includes a main shaft portion 241, a sub-shaft portion 242, and an eccentric portion 243 provided between the main shaft portion 241 and the sub-shaft portion 242. The roller 250 is sleeved on the eccentric portion 243. A first shaft hole 2212 is provided at the middle position of the flange portion 221, and a second shaft hole 231 is provided on the lower flange 230. The main shaft portion 241 passes through the first shaft hole 2212, and the sub-shaft portion 242 passes through the second shaft hole 231. The first surface is the finish-machined surface of the flange portion 221. The area of the first surface includes the area of the first shaft hole 2212 and the area of the exhaust hole 2211. The diameter of the first surface is not elaborated herein.

[0058] In this embodiment, the surface of the connecting portion 222 close to the cylinder 210 is the second surface, the area of the second surface is S2, by correlating the area of the second surface and the total area of all the oil return holes, and setting a reasonable ratio, that is, 0.2 ≤ S m / S2 ≤ 0.4 can not only ensure the total area of all oil return holes, but also ensure the stiffness of the upper flange 220, reduce the degree of distortion of the upper flange 220, and thus reduce the vibration and noise of the compressor. For example, S m The value of / S2 can be 0.2, 0.25, 0.3, 0.35, 0.4, etc., and there is no limitation here.

[0059] It should be noted that the area of the second surface is a rough machining surface, the roughness of the second surface is greater than that of the first surface, the second surface is an annular structure, the inner diameter of the second surface is D4, the inner diameter of the second surface is D5, and the area of the second surface is which will not be elaborated here.

[0060] It should be noted that the total area S m of all oil return holes refers to the sum of the areas of each oil return hole. The area of a single oil return hole refers to the area of the part surrounded by the contour line of the hole wall of the oil return hole on the cross-section along the axial direction of the flange portion 221. When the oil return hole is a circular hole, the area of the oil return hole is When the oil return hole is a circumferential waist-shaped hole, taking the connection line between the center of the semi-circle at one end of the circumferential waist-shaped hole and the center of the flange portion 221 as the third radial line, and taking the connection line between the center of the semi-circle at the other end of the circumferential waist-shaped hole and the center of the flange portion 221 as the fourth radial line, the included angle between the third radial line and the fourth radial line is α4. At this time, the area of the oil return hole is which will not be elaborated here.

[0061] For example Figure 3 as shown, the pump body assembly 200 of this embodiment further includes a sliding vane. The cylinder 210 is provided with a sliding vane groove communicating with the compression chamber 21. The sliding vane is slidably arranged in the sliding vane groove, and one end of the sliding vane abuts against the outer peripheral surface of the roller 250 to divide the compression chamber 211 into a high-pressure chamber and a low-pressure chamber. The exhaust hole 2211 communicates with the high-pressure chamber. Among the multiple oil return holes, the total area of the oil return holes close to the high-pressure chamber is smaller than the total area of the oil return holes close to the low-pressure chamber, which can reduce the distortion of the upper flange and thus improve the stiffness of the upper flange 200.

[0062] In this embodiment, the displacement of the compressor is C, the diameter of the compression chamber 211 is G1, the height of the compression chamber 211 is H, the outer diameter of the roller 250 is G2, and the displacement of the pump body assembly 200 Since the larger the displacement of the compressor, the higher the requirement for the oil return capacity of the lubrication system of the compressor. By correlating the displacement of the compressor and the total area S m of at least two oil return holes, and adopting a reasonable ratio setting, that is, 5 ≤ S m / C ≤ 17. Under compressors with different displacements, it can effectively ensure the oil return amount of the compressor, improve the oil return capacity of the lubrication system, reduce frictional losses, and ensure the normal operation of the compressor and extend its service life. For example, S m The value of / C can be 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, etc., and there is no limitation here.

[0063] The refrigeration equipment according to the second aspect of the embodiment of the present invention includes the compressor of the above embodiment.

[0064] The refrigeration equipment according to the second aspect of the embodiment of the present invention adopts the compressor of the first aspect of the embodiment. By reasonably setting the minimum included angle between the line connecting the center of the first solder joint 2223 and the center of the flange portion 221 and the line connecting the center of the exhaust hole 2211 and the center of the flange portion 221, that is, α1 ≤ 40°, it can reduce the deformation of the flange portion 221 around the exhaust hole 2211, improve the stiffness of the upper flange 220, and thus improve the welding strength between the upper flange 220 and the housing 100; at the same time, along the circumferential direction of the flange portion 221, the first solder joint 2223 coincides with the first oil return hole 2221, that is, the first oil return hole 2221 is located between the first solder joint 2223 and the exhaust hole 2211. The first oil return hole 2221 can prevent the welding heat of the first solder joint 2223 from directly transferring to the side wall of the exhaust hole 2211, so as to avoid the situation that the exhaust resistance of the exhaust hole 2211 increases due to the thermal deformation at the first solder joint 2223 squeezing the exhaust hole 2211, thereby reducing the noise during the operation of the compressor.

[0065] Since the refrigeration equipment adopts all the technical solutions of the compressor of the above embodiment, it has at least all the beneficial effects brought by the technical solutions of the above embodiment, which will not be elaborated here.

[0066] The above has described the embodiments of the present invention in detail with reference to the drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. Compressor, characterized in that, Comprising: A housing; A pump body assembly disposed within the housing, the pump body assembly including a cylinder and an upper flange. The upper flange includes a flange portion and a connecting portion connected to the outer peripheral surface of the flange portion. The flange portion is connected to the cylinder and is provided with an exhaust hole. At least two solder joints are provided between the connecting portion and the inner peripheral surface of the housing. The solder joint with the smallest distance from the exhaust hole is the first solder joint, and the remaining solder joints are the second solder joints. The connecting portion is provided with at least two oil return holes spaced circumferentially along the flange portion. The oil return hole with the smallest distance from the exhaust hole is the first oil return hole, and the remaining oil return holes are the second oil return holes; Radially along the flange portion, the first oil return hole is located between the first solder joint and the exhaust hole. Circumferentially along the flange portion, the second solder joint and the second oil return hole are staggeredly arranged. The minimum included angle between the line connecting the first solder joint and the center of the flange portion and the line connecting the exhaust hole and the center of the flange portion is α1, satisfying: α1 ≤ 40°.

2. The compressor according to claim 1, characterized in that: The maximum outer diameter of the upper flange is D1, the distance from the center of each oil return hole to the center of the flange portion is D2 / 2, and the maximum width of the oil return hole in the radial direction of the flange portion is B1, satisfying: 2.5 ≤ D1 / B1 ≤ 13, 0.15 ≤ D2 / D1 ≤ 0.

5.

3. The compressor according to claim 1, characterized in that: The maximum width of the oil return hole in the radial direction of the flange portion is B1, and the maximum thickness of the flange portion in the axial direction of the flange portion is B2, satisfying: 0.2 ≤ B1 / B2 ≤ 0.

9.

4. The compressor according to claim 1, characterized in that: The minimum interval between adjacent oil return holes corresponding to the center of the flange portion is α2, satisfying: α2 ≥ 15°.

5. The compressor according to claim 1, wherein: The surface of the flange portion connected to one side of the cylinder is the first surface, the area of the first surface is S1, and the total area of all the oil return holes is S m , satisfying: 0.2 ≤ S m / S1 ≤ 0.

5.

6. The compressor according to claim 1, wherein: The minimum interval between adjacent solder joints corresponding to the center of the flange portion is α3, satisfying: α3 ≥ 45°.

7. The compressor according to claim 1, characterized in that: The surface of the connecting part close to the cylinder side is the second surface, and the area of the second surface is S2. The total area of all the oil return holes is S m , satisfying: 0.2 ≤ S m / S2 ≤ 0.

4.

8. The compressor according to claim 1, characterized in that: The area of the first oil return hole is larger than the area of each second oil return hole.

9. The compressor according to claim 1, characterized in that: The displacement of the compressor is C, and the total area of all the oil return holes is S m , satisfying: 5 ≤ S m / C ≤ 17.

10. Refrigeration equipment, characterized in that: Including the compressor according to any one of claims 1-9.

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