Flange assembly of compressor, compressor and air conditioner

Abstract

The application provides a flange assembly of a compressor, the compressor and an air conditioner. The flange assembly comprises a flange and an oil stabilizing structure. The flange comprises a first axial end face and a second axial end face. The flange is provided with a first flow-through hole and a first exhaust hole penetrating from the first axial end face to the second axial end face. The first flow-through hole allows refrigerant and oil to flow from the second axial end face to the first axial end face of the flange. The first exhaust hole is used for exhaust. The first flow-through hole is located radially outside the first exhaust hole. The oil stabilizing structure is arranged on the first axial end face. The oil stabilizing structure can shield the mixture of refrigerant and oil flowing out of the first flow-through hole when the compressor is started at low temperature and at rest. According to the application, the problem of oil shortage caused by the flow-out of refrigerant oil at low temperature and at rest can be solved. The oil shortage phenomenon of the pump body parts is avoided, the operation reliability is ensured, and the performance and noise level are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressors, in particular to a flange assembly of a compressor, a compressor and an air conditioner. BACKGROUND

[0002] The rolling rotor compressor mainly consists of a pump body and a motor. The pump body assembly mainly includes a cylinder, a crankshaft, a roller, a sliding vane and upper and lower flanges. The pump body crankshaft is in interference fit with the motor rotor. The R-shaped end face of the sliding vane is in linear contact with the outer circular surface of the roller under the action of spring force and back pressure in the shell, so as to divide the internal volume composed of the cylinder and the roller into two crescent-shaped suction chambers and compression chambers. The working principle is that the crankshaft rotates periodically under the driving force of the motor, and the roller is driven to rotate synchronously by the eccentric structure, and in turn the sliding vane moves radially in the sliding vane groove of the cylinder, so that the volumes of the suction chamber and the compression chamber change, thereby realizing the periodic suction, compression and exhaust of the compressor.

[0003] During the actual operation of the compressor, the refrigeration oil in the oil pool at the lower part of the shell enters the pump body from the oil hole under the action of the oil guide plate along with the rotation of the crankshaft. However, since the refrigerant is compressed in the cylinder and is discharged as a high-pressure gas, the refrigeration oil mixed with the refrigerant is easily discharged together with the high-pressure gas along the flow-through passage under the action of the gas force. As the running time increases, the amount of refrigeration oil in the compressor gradually decreases, resulting in a lack of refrigeration oil for lubrication between the pump body parts, which cannot form a normal oil film, causing abnormal mechanical wear of the parts, reducing the performance of the compressor, and affecting its reliability. In addition, abnormal noise is also generated when the parts are in an oil shortage state and the mechanical friction is increased.

[0004] Since the refrigeration oil is mixed with the high-pressure refrigerant after compression and discharged together from the compressor during the operation of the rotor compressor in the prior art, as the running time increases, the amount of refrigeration oil in the compressor gradually decreases, resulting in an abnormal lack of oil in part of the pump body assembly, which cannot form a normal oil film, thereby causing abnormal mechanical wear, affecting its performance and reliability, and reducing its noise level. Therefore, the present application provides a flange assembly of a compressor, a compressor and an air conditioner to overcome the above-mentioned problems. SUMMARY

[0005] Therefore, the present application aims to solve the technical problem of the pump body assembly of the rotor compressor in the prior art, which has the defect that the refrigeration oil flows into the upper chamber through the waist-shaped hole along with the refrigerant during low-temperature standing start, thereby providing a flange assembly of a compressor, a compressor and an air conditioner.

[0006] In order to solve the above-mentioned problems, the present application provides a flange assembly of a compressor, which comprises:

[0007] A flange and an oil stabilizing structure, the flange includes a first axial end face and a second axial end face, and the flange is respectively provided with a first flow hole and a first exhaust hole extending from the first axial end face to the second axial end face, the first flow hole can allow refrigerant and oil to flow from the second axial end face of the flange to the first axial end face, the first exhaust hole is used for exhaust, and the first flow hole is located radially outside the first exhaust hole, the oil stabilizing structure is provided on the first axial end face, and the oil stabilizing structure can block the mixture of refrigerant and oil flowing out of the first flow hole when the compressor is started at rest.

[0008] In some embodiments, the oil stabilizing structure includes an oil stabilizing body and an oil stabilizing ring, the oil stabilizing body is an annular structure and is fixedly arranged on the first axial end face of the flange, the oil stabilizing ring is also an annular structure, and the radial outer end of the oil stabilizing ring is fixed to the radial inner end of the oil stabilizing body, and the radial inner end of the oil stabilizing ring extends in a direction away from the oil stabilizing body to be opposite to the first flow hole.

[0009] In some embodiments, the extension direction of the radial outer end to the radial inner end of the oil stabilizing ring is to extend radially inward while also extending obliquely in the direction close to the flange. The oil stabilizing body includes a third axial end face connected to the flange and a fourth axial end face away from the flange. The third axial end face is in contact with the first axial end face, and the fourth axial end face is parallel to the third axial end face. The oil stabilizing ring includes a fifth axial end face relatively close to the flange and a sixth axial end face relatively far away from the flange. The fifth axial end face is parallel to the sixth axial end face, and an inclination angle θ is formed between the sixth axial end face and the fourth axial end face, and θ is between (0, 90°).

[0010] In some embodiments, 20°≤θ≤40°.

[0011] In some embodiments, the first axial end face of the flange is the upper end face, the second axial end face is the lower end face, the oil stabilizing body is arranged on the upper end face of the flange, the third axial end face is the lower end face of the oil stabilizing body, and the fourth axial end face is the upper end face of the oil stabilizing body. The radial outer end of the oil stabilizing ring is connected to the radial inner side of the fourth axial end face, and the radial inner end of the oil stabilizing ring extends radially inward and also extends downward to a position completely covering the top of the first flow hole.

[0012] In some embodiments, the oil control ring is provided with second flow-through holes penetrating through the fifth axial end surface to the sixth axial end surface, which are not opposite to the first flow-through holes.

[0013] In some embodiments, the first flow-through holes are m in number, which are spaced apart in the circumferential direction on the flange, the second flow-through holes are k in number, which are spaced apart in the circumferential direction on the oil control ring, and in the axial projection plane, the second flow-through holes are staggered with the first flow-through holes, and the second flow-through holes are located between two adjacent first flow-through holes, wherein m and k are both natural numbers, and m≥k.

[0014] In some embodiments, in the axial projection plane, the first flow-through holes are waist-shaped holes, and the second flow-through holes are rectangular holes or circular holes or sector ring-shaped holes.

[0015] In some embodiments, the oil control body is provided with first mounting holes penetrating through the third axial end surface to the fourth axial end surface, the first axial end surface of the flange is provided with second mounting holes, the second mounting holes are opposite to the first mounting holes, and the flange assembly further comprises a fastener which penetrates through the first mounting holes and the second mounting holes at the same time and fixes the oil control body on the flange.

[0016] In some embodiments, the first mounting holes are n in number, which are spaced apart in the circumferential direction of the oil control body, the second mounting holes are n in number, which are spaced apart in the circumferential direction of the flange, and the first mounting holes and the second mounting holes are one-to-one correspondingly arranged, wherein n is a natural number, and n≥3; and / or, the first mounting holes are screw through holes, the second mounting holes are screw holes, and the fastener is a screw.

[0017] In some embodiments, the radius of the radial outer edge of the oil control body is R, the radius of the radial inner edge of the oil control body is r, and the radial distance between the center axis of the first mounting hole and the radial outer edge of the oil control body is S, and S=(R-r) / 2.

[0018] In some embodiments, the axial height between the third axial end surface and the fourth axial end surface of the oil control body is H, and the height between the fifth axial end surface and the sixth axial end surface of the oil control ring is T, and H / T=1.0-4.0; 1.5mm≤H≤6mm.

[0019] In some embodiments, the radial distance between the radial outer edge of the first flow hole and the radial outer end of the flange is the thickness A of the flange, the radial thickness of the oil stabilizing body is the thickness B of the oil stabilizing ring, and B≥2A / 3.

[0020] In some embodiments, the radial inner end of the oil stabilizing ring is a rounded transition structure; and / or the oil stabilizing ring is processed with an oleophobic material, or the surface of the oil stabilizing ring is surface-treated with an oleophobic material to form an oleophobic layer.

[0021] In some embodiments, the flange includes a flange body and a flange skirt, the flange skirt is located at one axial end of the flange body and is connected to the radial outer end of the flange body, the radial thickness of the flange skirt is smaller than the radial thickness of the flange body, the first axial end face is located on the flange skirt, the second axial end face is located at the other axial end of the flange body, the first flow hole passes through the flange body to the flange skirt, and the first exhaust hole passes through the flange body; an exhaust valve assembly is provided at the first exhaust hole.

[0022] The present invention also provides a compressor, which includes the flange assembly of the compressor described in any of the preceding items, and also includes a cylinder, the flange is arranged on the axial end face of the cylinder, and the cylinder is provided with a third flow hole and a second exhaust hole, the third flow hole is arranged opposite to the first flow hole, and the second exhaust hole is arranged opposite to the first exhaust hole.

[0023] The present invention also provides an air conditioner, which includes the aforementioned compressor.

[0024] The flange assembly of a compressor, the compressor, and the air conditioner provided by the present invention have the following beneficial effects:

[0025] 1.The present application is characterized in that the oil stabilizing structure is arranged on the first axial end face of the flange, and the oil stabilizing structure can shield the mixture of refrigerant and oil flowing out of the first flow-through hole when the compressor is started in a static state, thereby effectively shielding the frozen oil, especially when the compressor is started in a low-temperature static state, preventing the frozen oil from entering the upper chamber through the waist-shaped hole (first flow-through hole) along with the refrigerant, solving the problem of oil shortage caused by the flow-out of frozen oil during low-temperature static starting, avoiding the oil shortage phenomenon of pump body parts, ensuring the operation reliability, improving the performance and noise level. The present application further comprises an oil stabilizing body and an oil stabilizing ring, wherein the oil stabilizing body is used to fix the oil stabilizing structure to the flange, the oil stabilizing ring is connected to the oil stabilizing body and extends towards the first flow-through hole, the structure of the oil stabilizing ring can effectively block the oil and gas, recover the oil and prevent it from being discharged; and the oil stabilizing ring of the present application is arranged on the flange, does not occupy the volume of the motor lower chamber, and does not cause exhaust pulsation; the present application can increase the oil blocking area and improve the oil and gas separation rate through the structure of the annular oil stabilizing body and the oil stabilizing ring, and has high structural strength.

[0026] 2.The present application further comprises a second flow-through hole, and the second flow-through hole is not opposite to the first flow-through hole, so that the oil and gas mixture discharged from the first flow-through hole can be effectively blocked by the oil stabilizing ring and will not be directly discharged, and after effective gas-liquid separation, the gas is discharged upward through the second flow-through hole, thereby further improving the oil and gas separation rate; the present application further limits the range of a plurality of related parameters of the oil stabilizing ring, which can effectively improve the processing technology, reliability and oil return effect. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a sectional view of the compressor pump body assembly in the background art;

[0028] Figure 1-1 is Figure 1 a perspective view of the upper flange assembly after removing the upper and lower flanges;

[0029] Figure 2 is a sectional view of the upper flange assembly of the present application;

[0030] Figure 2-1 is Figure 2 a top view of the upper flange assembly of

[0031] Figure 3 is Figure 2 a top view of the oil stabilizing structure in

[0032] Figure 3-1 is Figure 2 a partial enlarged view of the oil stabilizing structure in C part of

[0033] Figure 4 is Figure 3 a top view of the oil retaining structure of alternative embodiment 1 (circular hollow, i.e. circular second flow-through hole);

[0034] Figure 5 is Figure 3-1 a partial enlarged view of the oil retaining structure of alternative embodiment 2 (right-angled transition);

[0035] Figure 6 is a comparison chart of the oil circulation rate level of the optimal embodiment of the present application and the conventional scheme compressor;

[0036] Figure 7 is a comparison chart of the compressor performance level of the optimal embodiment of the present application and the conventional scheme compressor;

[0037] Figure 8 is a comparison chart of the compressor noise level of the optimal embodiment of the present application and the conventional scheme compressor.

[0038] The reference signs are shown as:

[0039] 1, flange; 11, first axial end face; 12, second axial end face; 13, first flow-through hole; 14, first exhaust hole; 15, flange body; 16, flange skirt; 17, exhaust valve assembly; 2, oil retaining structure; 3, oil retaining body; 31, third axial end face; 32, fourth axial end face; 33, first mounting hole; 4, oil retaining ring; 41, fifth axial end face; 42, sixth axial end face; 43, second flow-through hole; 5, cylinder; 51, third flow-through hole; 52, second exhaust hole; 53, suction cavity; 54, exhaust cavity; 6, crankshaft; 7, roller; 8, lower flange; 9, sliding vane. DETAILED DESCRIPTION

[0040] As shown in Figure 2-8 , the present application provides a flange assembly of a compressor, which comprises:

[0041] a flange 1 and an oil retaining structure 2, the flange 1 comprising a first axial end face 11 and a second axial end face 12, the flange 1 being provided with a first flow-through hole 13 and a first exhaust hole 14 respectively, the first flow-through hole 13 allowing refrigerant and oil to flow from the second axial end face 12 to the first axial end face 11 of the flange 1, the first exhaust hole 14 being used for exhaust, and the first flow-through hole 13 being located radially outside the first exhaust hole 14, the oil retaining structure 2 being arranged on the first axial end face 11, and the oil retaining structure 2 being capable of shielding the mixture of refrigerant and oil flowing out of the first flow-through hole 13 when the compressor is started up.

[0042] The present invention provides an oil stabilizing structure on the first axial end face of the flange. The oil stabilizing structure can block the refrigerant and oil mixture flowing out of the first circulation hole when the compressor is statically started, thereby effectively blocking the refrigeration oil, especially when the compressor is statically started at low temperature, and preventing the refrigeration oil from entering the upper chamber along with the refrigerant through the waist-shaped hole (first circulation hole) in this startup state, thereby preventing the refrigeration oil from flowing out with the refrigerant and causing oil shortage. This solves the problem of oil shortage caused by refrigeration oil outflow during low-temperature static starting, avoids oil shortage in pump body parts, ensures its operational reliability, and improves performance and noise level. In addition, the oil stabilizing ring of the present invention is provided on the flange, does not occupy the volume of the lower chamber of the motor, and does not cause exhaust pulsation.

[0043] The present invention is in the conventional compressor pump body structure ( Figure 1 Based on the design shown in Figure 1, by optimizing the pump body structure, we provide an upper flange assembly consisting of an upper flange and an oil stabilizing ring. This structure mitigates the problem of refrigerant oil mixing with the refrigerant, which, under the influence of gas pressure, rushes upward through the waist-shaped holes in the upper flange, enters the upper chamber, and exits the compressor during operation. This improves compressor oil return, performance, and noise levels. Furthermore, the dimensional parameters of the oil stabilizing ring are limited to enhance its processing and operational reliability.

[0044] The specific implementation is as follows:

[0045] The rolling rotor compressor is mainly composed of two parts: the pump body and the motor. Figure 1 、 1-1 As shown, the pump assembly primarily consists of a cylinder, crankshaft, rollers, vanes, and upper and lower flanges. The pump crankshaft forms an interference fit with the motor rotor. The R-shaped end faces of the vanes, driven by spring force and internal housing back pressure, press against the outer surface of the rollers in line contact, dividing the internal volume formed by the cylinder and rollers into two crescent-shaped suction and compression chambers. The operating principle is that the crankshaft, driven by the motor's driving force, rotates periodically. Its eccentric structure drives the rollers to rotate synchronously, which in turn drives the vanes to reciprocate radially within the cylinder vane slots. This causes the volumes of the suction and compression chambers to change accordingly, thus achieving the compressor's cyclical intake, compression, and exhaust processes.

[0046] like Figure 2 、 2-1As shown, it is a part diagram of the oil stabilizing ring of the present application. During the operation of the compressor, the refrigeration oil of the pump body part is mixed with the compressed high-pressure refrigerant, and under the action of gas force and pressure difference between the upper and lower chambers of the compressor, it enters the upper chamber of the compressor from bottom to top together with the high-pressure refrigerant. If the designed oil stabilizing ring is installed on the upper flange, the gas-liquid mixture of refrigeration oil and high-pressure refrigerant will hit the oil stabilizing ring when passing through the waist-shaped hole of the upper flange, so that the refrigeration oil in the gas-liquid mixture is blocked and separated from the refrigerant, and adheres to the oil stabilizing ring. Then it flows back to the pump body and oil pool under the action of gravity along the inner side of the oil stabilizing ring. This can effectively prevent the phenomenon of lack of oil in the pump body part after the refrigeration oil enters the upper chamber of the compressor and is discharged, causing abnormal friction and leakage, reducing the oil circulation rate of the compressor, and improving the oil return effect, performance and noise level.

[0047] The present application innovatively proposes a rotor compressor upper flange assembly. By installing an annular oil stabilizing structure at the position of the skirt of the pump body upper flange, it can prevent the refrigeration oil of the pump body part from entering the upper chamber of the compressor after being mixed with high-pressure refrigerant gas during the operation of the compressor, and then being discharged from the compressor, so as to solve the reliability, performance and noise problems caused by insufficient refrigeration oil in the compressor. Especially, it can solve the problem of lack of oil caused by the refrigeration oil flowing into the upper chamber through the waist-shaped hole along with the refrigerant during low-temperature stationary start.

[0048] In some embodiments, the oil stabilizing structure 2 includes an oil stabilizing body 3 and an oil stabilizing ring 4. The oil stabilizing body 3 is an annular structure and is fixedly arranged on the first axial end face 11 of the flange 1. The oil stabilizing ring 4 is also an annular structure, and the radially outer end of the oil stabilizing ring 4 is fixed to the radially inner end of the oil stabilizing body 3, and the radially inner end of the oil stabilizing ring 4 extends away from the oil stabilizing body 3 and is opposite to the first flow-through hole 13. The present application further designs the structure of the oil stabilizing body and the oil stabilizing ring, so that the oil stabilizing body can be used to fix the oil stabilizing structure as a whole to the flange, and the oil stabilizing ring is connected to the oil stabilizing body and extends towards the first flow-through hole. Through the structure of the oil stabilizing ring, the oil and gas can be effectively blocked, the oil can be recovered and prevented from being discharged, and the lack of oil caused by the refrigeration oil entering the upper chamber through the waist-shaped hole (first flow-through hole) along with the refrigerant during the low-temperature stationary start of the compressor can be prevented.

[0049] In some embodiments, the extension direction of the radial outer end to the radial inner end of the oil stabilizing ring 4 is obliquely extending towards the radial inner side while also tilting towards the direction close to the flange 1, the oil stabilizing body 3 comprises a third axial end surface 31 connected with the flange 1 and a fourth axial end surface 32 away from the flange 1, the third axial end surface 31 is flush with the first axial end surface 11, the fourth axial end surface 32 is parallel to the third axial end surface 31, the oil stabilizing ring 4 comprises a fifth axial end surface 41 relatively close to the flange 1 and a sixth axial end surface 42 relatively away from the flange 1, the fifth axial end surface 41 is parallel to the sixth axial end surface 42, and there is an oblique included angle θ between the sixth axial end surface 42 and the fourth axial end surface 32, θ is between (0, 90°). This is a further preferred structural form of the oil stabilizing ring of the present application, that is, the two axial end surfaces of the oil stabilizing ring have an oblique included angle with the axial end surfaces of the flange, and through the oblique included angle, the oil stabilizing ring can extend towards the first flow-through hole, and the blocking effect on the oil gas can be further improved, and the oil gas separation effect can be further improved.

[0050] In some embodiments, 20°≤θ≤40°. Since the frozen oil needs to flow back by gravity after adhering to the inner wall of the oil stabilizing ring, in order to improve the oil return effect, the included angle θ between the inclined portion and the horizontal direction satisfies: 20°≤θ≤40°, which can make the frozen oil flow back to the pump body more smoothly.

[0051] In some embodiments, the first axial end surface 11 of the flange 1 is an upper end surface, the second axial end surface 12 is a lower end surface, the oil stabilizing body 3 is arranged on the upper end surface of the flange 1, the third axial end surface 31 is the lower end surface of the oil stabilizing body 3, the fourth axial end surface 32 is the upper end surface of the oil stabilizing body 3, the radial outer end of the oil stabilizing ring 4 is connected with the radial inner side of the fourth axial end surface 32, and the radial inner end extends towards the radial inner side while also extending downwards to a position completely covering the upper side of the first flow-through hole 13. This is a further preferred arrangement form of the flange and oil stabilizing structure of the present application, that is, an up-down arrangement form is adopted, the oil stabilizing body is arranged on the upper end surface of the flange, and the oil stabilizing ring extends obliquely downwards from the oil stabilizing body, so as to effectively block the oil gas mixture flowing from the first flow-through hole downwards, effectively utilize the gravity, and realize and improve the oil gas separation effect.

[0052] In some embodiments, the oil stabilizing ring 4 is provided with a second flow hole 43 extending from the fifth axial end face 41 to the sixth axial end face 42. The second flow hole 43 is not opposite to the first flow hole 13. The present invention also ensures the discharge of gas after oil and gas separation through the second flow hole in the oil stabilizing ring. Furthermore, the second flow hole is not opposite to the first flow hole, allowing the oil and gas flowing out of the first flow hole to impact the oil stabilizing ring, effectively achieving oil and gas separation, preventing direct discharge of oil and gas, and improving the oil and gas separation rate.

[0053] like Figure 3-1 The figure shows the upper flange assembly of the present invention. Among them, the inclined part of the oil stabilizing ring (oil stabilizing ring 4) is divided into a hollow part (second flow hole 43) and a flat part. In order to ensure that the oil stabilizing ring has an oil return effect, its flat part needs to be installed directly above the waist-shaped hole of the upper flange, so that the gas-liquid mixture of the refrigerant and the refrigeration oil can pass through the waist-shaped hole of the upper flange and directly hit the inner wall of the inclined part of the oil stabilizing ring; in order not to affect the smooth flow of the fluid channel inside the compressor, a fan-shaped hollow part needs to be opened on the oil stabilizing ring for fluid circulation, so this fan-shaped hollow part needs to be staggered with the waist-shaped hole of the upper flange to prevent the gas-liquid mixture of the refrigerant and the refrigeration oil from directly passing through the hollow part and causing the oil stabilizing ring to fail.

[0054] In some embodiments, there are m first circulation holes 13, and m first circulation holes 13 are spaced apart along the circumferential direction on the flange 1. There are k second circulation holes 43, and k second circulation holes 43 are spaced apart along the circumferential direction on the oil stabilizing ring 4. In addition, in the projection plane in the axial direction, the second circulation holes 43 are staggered with the first circulation holes 13, and the second circulation holes 43 are located between two adjacent first circulation holes 13, wherein m and k are both natural numbers, and m ≥ k. The present invention can enhance the flow of the oil-gas mixture in the circumferential direction by providing a plurality of first circulation holes and second circulation holes, thereby further improving the flow rate of oil-gas separation and improving the oil-gas separation effect. The number of first circulation holes is greater than or equal to the number of second circulation holes, which can increase the impact effect of the fluid and improve the oil resistance and oil separation effect.

[0055] In some embodiments, in the axial projection plane, the first circulation hole 13 is a waist-shaped hole, and the second circulation hole 43 is a rectangular hole, a circular hole, or a sector-shaped hole. This is the preferred structural form of the first circulation hole and the second circulation hole of the present invention.

[0056] In some embodiments, the first mounting hole 33 is arranged on the third axial end surface 31 to the fourth axial end surface 32 of the oil stabilizing body 3, the second mounting hole is arranged on the first axial end surface 11 of the flange 1, and the second mounting hole is opposite to the first mounting hole 33, and the flange assembly further comprises a fastener which is simultaneously inserted into the first mounting hole 33 and the second mounting hole and fixes the oil stabilizing body 3 on the flange 1. The first mounting hole and the second mounting hole on the flange can effectively fix the oil stabilizing body on the flange, and effectively fix the oil stabilizing ring.

[0057] In some embodiments, the first mounting hole 33 is n, the n first mounting holes 33 are distributed along the circumferential direction of the oil stabilizing body 3, the second mounting hole is n, the plurality of second mounting holes are distributed along the circumferential direction of the flange 1, and the first mounting hole 33 and the second mounting hole are arranged one by one, wherein n is a natural number, and n≥3; and / or, the first mounting hole 33 is a screw through hole, the second mounting hole is a screw hole, and the fastener is a screw. The first mounting hole and the second mounting hole can improve the stability of the circumferential direction of the oil stabilizing structure.

[0058] The oil stabilizing ring of the present application is divided into a horizontal part (the oil stabilizing body 3) and an inclined part (the oil stabilizing ring 4), n screw through holes are arranged on the horizontal part, and the screw through holes are uniformly distributed on the horizontal part of the oil stabilizing ring. At the same time, the upper flange skirt surface is also provided with screw holes corresponding in size and number at positions corresponding to the screw through holes of the oil stabilizing ring. The screw is inserted from top to bottom through the oil stabilizing ring and is screwed with the threaded hole on the upper flange to fix the oil stabilizing ring on the upper flange. Preferably, if the number of locking screws of the upper flange assembly is too small, the oil stabilizing ring will not be fixed well, and will move during the operation of the compressor. In order to ensure the assembly reliability of the oil stabilizing ring and the upper flange, the parameter n needs to satisfy n≥3.

[0059] In some embodiments, the radius of the radial outer edge of the oil stabilizing body 3 is R, the radius of the radial inner edge of the oil stabilizing body 3 is r, the radial distance between the center axis of the first mounting hole 33 and the radial outer edge of the oil stabilizing body 3 is S, and S=(R-r) / 2.

[0060] The position of the screw through hole should be arranged as much as possible in the middle of the stable oil ring horizontal part, the outer radius of the stable oil ring is R, the inner radius is r, the distance between the axis of the screw through hole and the outer circle of the stable oil ring is S, and S should be ensured as much as possible: S=(R-r) / 2. The screw hole can be located in the center of the stable oil ring horizontal part, and the stable oil ring horizontal part is uniformly stressed after the screw is tightened, so that deformation is avoided.

[0061] In some embodiments, the axial height between the third axial end surface 31 and the fourth axial end surface 32 of the stable oil body 3 is H, the height between the fifth axial end surface 41 and the sixth axial end surface 42 of the stable oil ring 4 is T, and H / T=1.0-4.0; 1.5mm≤H≤6mm.

[0062] The structure strength of the stable oil ring is reduced after the screw through hole is arranged, and deformation is prone to occur, therefore, the height H of the stable oil ring horizontal part should be ensured to satisfy: 1.5mm≤H≤6mm. Meanwhile, the high-pressure refrigerant and the gas-liquid mixture of refrigeration oil continuously impact on the inclined part through the waist-shaped hole of the upper flange, so that the inclined part is also prone to deformation under the continuous stress, therefore, the height T should satisfy: H / T=1-4, so as to ensure that the inclined part of the stable oil ring has sufficient strength and reduces the possibility of deformation.

[0063] In some embodiments, the radial distance between the radial outer edge of the first flow-through hole 13 and the radial outer end of the flange 1 is the thickness A of the flange, the radial thickness of the stable oil body 3 is the thickness B of the stable oil ring, and B≥2A / 3.

[0064] In order to ensure the stability after the upper and lower flanges are locked by the screw, the screw cannot be too small, if the thickness of the stable oil ring is insufficient, it will not be able to provide sufficient space to arrange the corresponding screw through hole, therefore, the thickness of the stable oil ring should be as large as possible; the thickness of the upper flange is A, the thickness of the stable oil ring is B, and the two parameters should satisfy: B≥2A / 3, so as to ensure that the stable oil ring horizontal part has sufficient area margin for the arrangement of the screw through hole.

[0065] In some embodiments, the radially inner end of the oil stabilizing ring 4 is a round transition structure; and / or, the oil stabilizing ring is processed with oil-repellent material, or the surface of the oil stabilizing ring is treated with oil-repellent material to form an oil-repellent layer. The present application designs the edges of the oil stabilizing ring as a round transition, which can improve the smoothness of the refrigerant oil flow. Preferably, the oil stabilizing ring of the present application can be processed with oil-repellent material, or the surface of the oil stabilizing ring is treated with oil-repellent material to form an oil-repellent layer. So that the refrigerant oil does not adhere to the surface of the oil stabilizing ring, improving its oil return effect and increasing the amount of oil return.

[0066] In some embodiments, the flange 1 includes a flange body 15 and a flange skirt 16 located at one axial end of the flange body 15 and connected to the radially outer end of the flange body 15, the radial thickness of the flange skirt 16 is less than the radial thickness of the flange body 15, the first axial end surface 11 is located on the flange skirt 16, the second axial end surface 12 is located at the other axial end of the flange body 15, the first flow-through hole 13 penetrates from the flange body 15 to the flange skirt 16, and the first exhaust hole 14 penetrates the flange body 15; the first exhaust hole 14 is provided with an exhaust valve assembly 17.

[0067] The present application provides a kind of rotor compressor, its main invention point is that annular oil stabilizing structure is installed on the upper flange skirt upper end, refrigerant oil can be blocked after entering compressor upper chamber by high pressure refrigerant through upper flange waist hole, and it is discharged, reduce compressor oil discharge rate, so that compressor pump body assembly has enough refrigerant oil amount to carry out lubrication sealing, guarantee operation reliability, improve performance and noise level.In addition, the related parameters of the oil stabilizing ring are limited in range, which can further improve the processing technology and oil return effect.

[0068] The present application also provides a kind of compressor, which includes the flange assembly of any one of the preceding compressor, further comprising a cylinder 5, the flange 1 is arranged on the axial end surface of the cylinder, the cylinder 5 is provided with a third flow-through hole 51 and a second exhaust hole 52, the third flow-through hole 51 is arranged opposite to the first flow-through hole 13, and the second exhaust hole 52 is arranged opposite to the first exhaust hole 14.

[0069] As Figure 6 , 7 ,8 respectively are the oil circulation rate, performance and noise comparison chart of the compressor of the present application scheme and conventional scheme.After multiple rounds of compressor trial production and testing according to the parameter range of the present application, the oil circulation rate is effectively reduced compared with the test data of the conventional scheme compressor; in terms of performance, the new national standard single point COP of the design scheme sample of the present application is higher than that of the conventional scheme sample; and in terms of noise, the low frequency noise level is also obviously superior to that of the conventional scheme sample.

[0070] The application also provides an air conditioner comprising the compressor of any one of the preceding.

[0071] Alternatively, as shown in Figure 4 The hollow part of the oil stabilizing ring can also be designed as a circular shape or other special shape, instead of the fan shape as described in the optimal embodiment.

[0072] Alternatively, as shown in Figure 5 In addition to the round corner transition as described in the optimal embodiment, the edges of the oil stabilizing ring can also be designed as a right angle transition or other transition forms.

[0073] The technical solution of the application is not only applicable to the rotary compressor, but also applicable to rotary fluid machines with similar structures, such as rotary expanders, sliding vane compressors, sliding vane expanders, and the like.

[0074] The above description is only the preferred embodiment of the application and is not intended to limit the application. Any modification, equivalent replacement, and improvement within the spirit and principle of the application shall be included in the protection scope of the application. The above description is only the preferred embodiment of the application, and it should be pointed out that, for ordinary skilled in the art, without departing from the technical principle of the application, some improvements and modifications can be made, and these improvements and modifications shall be considered as the protection scope of the application.

Claims

1. A flange assembly for a compressor, characterized in that: include: A flange (1) and an oil stabilizing structure (2), wherein the flange (1) comprises a first axial end face (11) and a second axial end face (12), and the flange (1) is provided with a first flow hole (13) and a first exhaust hole (14) respectively extending from the first axial end face (11) to the second axial end face (12), wherein the first flow hole (13) allows refrigerant and oil to flow from the second axial end face (12) of the flange (1) to the first axial end face (11), and the first exhaust hole (14) is used for exhausting gas, and the first flow hole (13) is located radially outside the first exhaust hole (14), and the oil stabilizing structure (2) is provided on the first axial end face (11), and the oil stabilizing structure (2) can block the mixture of refrigerant and oil flowing out of the first flow hole (13) when the compressor is started at rest; The oil stabilizing structure (2) comprises an oil stabilizing body (3) and an oil stabilizing ring (4), wherein the oil stabilizing body (3) is an annular structure and is fixedly arranged on the first axial end face (11) of the flange (1), and the oil stabilizing ring (4) is also an annular structure, and the radial outer end of the oil stabilizing ring (4) is fixed to the radial inner end of the oil stabilizing body (3), and the radial inner end of the oil stabilizing ring (4) extends in a direction away from the oil stabilizing body (3) to be opposite to the first flow hole (13); The extension direction of the radial outer end to the radial inner end of the oil stabilizing ring (4) is to extend radially inward while also extending obliquely in a direction close to the flange (1); the oil stabilizing body (3) includes a third axial end face (31) connected to the flange (1) and a fourth axial end face (32) away from the flange (1); the third axial end face (31) is in contact with the first axial end face (11); the fourth axial end face (32) is parallel to the third axial end face (31); the oil stabilizing ring (4) includes a fifth axial end face (41) relatively close to the flange (1) and a sixth axial end face (42) relatively far away from the flange (1); the fifth axial end face (41) is parallel to the sixth axial end face (42); and an inclined angle θ is formed between the sixth axial end face (42) and the fourth axial end face (32); θ is between (0, 90°); A second flow hole (43) is provided on the oil stabilizing ring (4) in a manner of penetrating from the fifth axial end face (41) to the sixth axial end face (42), and the second flow hole (43) is not opposite to the first flow hole (13).

2. The compressor flange assembly according to claim 1, characterized in that: 20°≤θ≤40°.

3. The compressor flange assembly according to claim 1, characterized in that: The first axial end face (11) of the flange (1) is the upper end face, the second axial end face (12) is the lower end face, the oil stabilizing body (3) is arranged on the upper end face of the flange (1), the third axial end face (31) is the lower end face of the oil stabilizing body (3), and the fourth axial end face (32) is the upper end face of the oil stabilizing body (3). The radial outer end of the oil stabilizing ring (4) is connected to the radial inner side of the fourth axial end face (32), and the radial inner end of the oil stabilizing ring (4) extends radially inward and also extends downward to a position completely covering the upper side of the first flow hole (13).

4. The compressor flange assembly according to claim 1, characterized in that: There are m first circulation holes (13), and the m first circulation holes (13) are spaced apart on the flange (1) along the circumferential direction; there are k second circulation holes (43), and the k second circulation holes (43) are spaced apart on the oil stabilizing ring (4) along the circumferential direction; and in the projection plane in the axial direction, the second circulation holes (43) and the first circulation holes (13) are staggered, and the second circulation hole (43) is located between two adjacent first circulation holes (13), wherein m and k are both natural numbers, and m≥k.

5. The compressor flange assembly according to claim 1, characterized in that: In the projection plane in the axial direction, the first circulation hole (13) is a waist-shaped hole, and the second circulation hole (43) is a rectangular hole, a circular hole, or a fan-shaped hole.

6. The compressor flange assembly according to claim 1, characterized in that: The oil stabilizing body (3) is provided with a first mounting hole (33) in a manner of penetrating from the third axial end face (31) to the fourth axial end face (32); the first axial end face (11) of the flange (1) is provided with a second mounting hole, the second mounting hole being opposite to the first mounting hole (33); the flange assembly further comprises a fastener, the fastener simultaneously penetrates the first mounting hole (33) and the second mounting hole and fixes the oil stabilizing body (3) to the flange (1).

7. The compressor flange assembly according to claim 6, characterized in that: There are n first mounting holes (33), and the n first mounting holes (33) are spaced apart along the circumferential direction of the oil stabilizing body (3); there are n second mounting holes, and the plurality of second mounting holes are spaced apart along the circumferential direction of the flange (1); and the first mounting holes (33) and the second mounting holes are arranged in a one-to-one correspondence, wherein n is a natural number, and n≥3; and / or, the first mounting holes (33) are screw through holes, the second mounting holes are screw holes, and the fasteners are screws.

8. The compressor flange assembly according to claim 6, characterized in that: The radius of the radial outer edge of the oil stabilizing body (3) is R, the radius of the radial inner edge of the oil stabilizing body (3) is r, the radial distance between the central axis of the first mounting hole (33) and the radial outer edge of the oil stabilizing body (3) is S, and S=(Rr) / 2.

9. The compressor flange assembly according to claim 1, characterized in that: The axial height between the third axial end face (31) and the fourth axial end face (32) of the oil stabilizing body (3) is H, the height between the fifth axial end face (41) and the sixth axial end face (42) of the oil stabilizing ring (4) is T, and H / T=1.0~4.0; 1.5mm≤H≤6mm.

10. The compressor flange assembly according to claim 1, characterized in that: The radial distance between the radial outer edge of the first flow hole (13) and the radial outer end of the flange (1) is the thickness A of the flange, the radial thickness of the oil stabilizing body (3) is the thickness B of the oil stabilizing ring, and B≥2A / 3.

11. The compressor flange assembly according to claim 1, characterized in that: The radial inner end of the oil stabilizing ring (4) is a rounded transition structure; and / or the oil stabilizing ring is processed with an oleophobic material, or the surface of the oil stabilizing ring is surface-treated with an oleophobic material to form an oleophobic layer.

12. The compressor flange assembly according to any one of claims 1 to 11, characterized in that: The flange (1) comprises a flange body (15) and a flange skirt (16), wherein the flange skirt (16) is located at one axial end of the flange body (15) and is connected to the radial outer end of the flange body (15), the radial thickness of the flange skirt (16) is smaller than the radial thickness of the flange body (15), the first axial end face (11) is located on the flange skirt (16), and the second axial end face (12) is located at the other axial end of the flange body (15), the first flow hole (13) passes through the flange body (15) to the flange skirt (16), and the first exhaust hole (14) passes through the flange body (15); an exhaust valve assembly (17) is provided at the first exhaust hole (14).

13. A compressor, characterized in that: A flange assembly of a compressor according to any one of claims 1 to 12, further comprising a cylinder (5), wherein the flange (1) is arranged on the axial end face of the cylinder, and a third flow hole (51) and a second exhaust hole (52) are provided on the cylinder (5), wherein the third flow hole (51) is arranged opposite to the first flow hole (13), and the second exhaust hole (52) is arranged opposite to the first exhaust hole (14).

14. An air conditioner, characterized in that: Including the compressor according to claim 13.

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