Pump body assembly, compressor and air conditioner

Abstract

Disclosed are a pump body assembly, a compressor and an air conditioner. The pump body assembly comprises: a cylinder (11), wherein a air suction hole (111) and a slide vane groove (112) are arranged at intervals on the cylinder (11); an upper flange (12) arranged on the cylinder (11), wherein the upper flange (12) is located above the cylinder (11), a return passage (121) is arranged on the upper flange (12), the return passage (121) passes through the upper flange (12) along the axial direction of the upper flange (12), and the return passage (121) extends along the circumferential direction of the upper flange (12); at least one of the air suction hole (111) and the sliding vane groove (112) is arranged in a staggered manner relative to the distribution interval of the return passage (121) along the circumferential direction of the upper flange (12). The pump body assembly can solve the technical problem in the prior art that the liquid frozen oil cannot smoothly flow back into the oil pool.

Description

[0001] This invention claims priority to Chinese Patent Invention No. 202311249295.1, filed with the State Intellectual Property Office of the P. R.C on September 25, 2023, and entitled "Pump body assembly, compressor and air conditioner".Technical Field

[0002] The present invention relates to the field of compressor technologies, and in particular, to a pump body assembly, a compressor, and an air conditioner.Background

[0003] Currently, a compressor in the art known to inventors mainly includes a pump body component, a motor component, a liquid separator component, a housing component, and the like, where the housing component is configured to form a closed cavity structure, and the pump body component and the motor component are disposed inside the housing. The pump body assembly mainly includes main components, such as an upper flange, a cylinder, a crankshaft, a roller, a lower flange and a sliding piece, and the components cooperate to form a high-pressure exhaust cavity and a low-pressure air suction cavity. The motor assembly mainly includes a rotor assembly and a stator assembly. The lower part of the housing is an oil pool, and a certain amount of chilled oil is contained in the oil pool.

[0004] With regard to a rotary compressor, the rotary compressor generates a driving force for a crank shaft of a pump body by means of a motor; and under the rotary driving action of the crank shaft, the crank shaft eccentric portion structure is used to make the sliding piece perform reciprocating motion in a sliding vane groove, so that the volume of a suction and exhaust cavity of the compressor periodically changes, thereby realizing the processes of the compressor periodically sucking, compressing and discharging gas. After the gas discharged from the body cavity of the pump body enters the space of the lower cavity of the motor, the gas mainly flows to the upper cavity of the motor through the through holes of the rotor, and then is discharged from the compressor and enters the air conditioning system. The gas discharged from the pump body is usually a gas mixture of oil and gas of refrigerant and refrigeration oil, and the gas lubricating oil mixed in the refrigerant through the exhaust gas, liquid refrigeration and separation are performed by impacting a part or an oil retaining structure of an electric motor, and the separated liquid refrigerating oil mainly flows back to a lower cavity of the electric motor through an edge cutting gap between an inner wall of a shell and an outer circumferential surface of an electric motor stator, and further flows back to the compressor oil pool through the hollow flow passage of the upper flange.

[0005] However, during the backflow process of the liquid cooling oil, a situation that a part of the liquid cooling oil flows back to the air suction hole of the cylinder and the sliding vane groove of the cylinder often occurs, in this way, an ineffective backflow situation of the liquid frozen oil is caused, so that a part of the liquid frozen oil cannot be returned to the oil pool in time, as a result, the compressor oil pool is out of oil, thereby causing a reliability problem of wear of the friction auxiliary component due to insufficient oil supply from the pump body.Summary

[0006] The main purpose of the present invention is to provide a pump body assembly, a compressor and an air conditioner, so as to solve the technical problem in the prior art that liquid frozen oil cannot smoothly flow back into an oil pool.

[0007] In order to achieve the described object, according to one aspect of the present invention, a pump body assembly is provided, including: an cylinder provided with an air suction hole and a sliding vane groove at intervals; an upper flange disposed on the cylinder, the upper flange being disposed above the cylinder, a return passage being disposed on the upper flange, the return passage passing through the upper flange in the axial direction of the upper flange, and the return passage extending in a circumferential direction of the upper flange; wherein, along the circumferential direction of the upper flange, at least one of the air suction hole and the sliding vane groove is disposed in a staggered manner relative to a distribution interval of the return passage.

[0008] Further, the air suction hole and the sliding vane groove are arranged at intervals along a circumferential direction of the cylinder; wherein, along the circumferential direction of the upper flange, distribution intervals of the suction hole and the sliding vane groove are disposed in a staggered manner relative to the distribution interval of the return passage.

[0009] Further, the cylinder includes a cylinder block and a connecting portion which are connected to each other, wherein the connecting portion is protruded from a side portion of the cylinder body block, the connecting portion is provided with the air suction hole and the sliding vane groove, and the connecting portion extends in a circumferential direction of the cylinder block; wherein, along the circumferential direction of the upper flange, the connection portion and the distribution interval of the return passage are disposed in a staggered manner.

[0010] Further, the upper flange includes a flange body and an exhaust valve seat which are connected to each other; along the circumferential direction of the upper flange, the exhaust valve seat and the distribution interval of the return passage are disposed in a staggered manner.

[0011] Further, an exhaust volume of the pump body assembly is V, an operating frequency of the pump body assembly is f, and a flow area of the return passage is S; wherein 0.1 ≤ S / (0.001 Vf) ≤ 0.6.

[0012] Further, a radius of a central circle corresponding to the return passage is r0, an outer radius of the upper flange is R, and a maximum axial width of the return passage is w; wherein 1- (r 0 +0.5w) / R≥0.05.

[0013] Further, the upper flange is welded to a to-be-connected member; along the circumferential direction of the upper flange, the welding joint where the upper flange and the to-be-connected member are welded and the distribution interval of the return passage are disposed in a staggered manner .

[0014] Further, a tail hole is disposed at an end portion of the sliding vane groove, the tail hole is a circular hole, and a diameter of the tail hole is d; the upper flange is provided with a first yielding hole corresponding to the tail hole, the first yielding hole is disposed opposite to the tail hole, the first yielding hole is a circular hole, and a diameter of the first yielding hole is D; Wherein d ≤ D ≤ d + 0.5mm.

[0015] Further, the cylinder is provided with a process hole; along a circumferential direction of the cylinder, the process hole and the distribution interval of the return passage are disposed in a staggered manner.

[0016] Further, the upper flange is provided with a second yielding hole arranged opposite to the process hole, both the process hole and the second yielding hole are both circular holes, a diameter of the process hole is d1, and a diameter of the second yielding hole is D1; wherein d1 ≤ D1 ≤ d1 + 0.5mm.

[0017] Further, the return passage includes a plurality of return holes disposed at intervals along the circumferential direction of the upper flange, and a distance between two return holes at two ends of the plurality of return holes forms a distribution interval of the return passage.

[0018] According to another aspect of the present invention, a compressor is provided, which includes the pump body assembly provided above.

[0019] According to another aspect of the present disclosure, an air conditioner is provided, which includes the compressor provided above.

[0020] By means of the technical solution of the present invention, at least one of the air suction hole and the sliding vane groove is disposed in a staggered manner relative to a distribution interval of the return passage, the possibility that the oil liquid flowing out through the return passage enters at least one of the air suction hole and the sliding vane groove can be effectively reduced, thereby effectively reducing an ineffective reflux condition of the frozen oil liquid, so that the frozen oil liquid can be smoothly returned to the oil pool, so as to ensure that the oil pool has sufficient oil liquid. Therefore, by means of the technical solution provided in the present invention, the technical problem in the prior art that a liquid frozen oil liquid cannot smoothly flow back into an oil pool can be solved.Brief Description of the Drawings

[0021] The accompanying drawings, which form a part of the present invention, are used for providing a further understanding of the present invention. The schematic embodiments and illustrations of the present invention are used for explaining the present invention, and do not form improper limits to the present invention. In the drawings: Fig. 1 is a schematic structural diagram of an upper flange according to an embodiment of the present invention; Fig. 2 is a schematic structural view of a pump body assembly according to an embodiment of the present disclosure; Fig. 3 is a schematic structural diagram of an upper flange having a first yielding hole according to an embodiment of the present invention; Fig. 4 is a schematic structural view of an upper flange having a first yielding hole and a second yielding hole according to an embodiment of the present invention; Fig. 5 illustrates a structural schematic diagram of an upper flange having a plurality of second yielding holes according to an embodiment of the present invention; Fig. 6 is a structural schematic diagram showing the cooperation between an upper flange and an cylinder according to an embodiment of the present invention; Fig. 7 shows a structural rigidity simulation diagram of an upper flange according to an embodiment of the present invention.

[0022] The figures include the following reference signs: 10, pump body assembly; 11, cylinder; 111, air suction hole; 112, sliding vane groove; 1121, tail hole; 113, cylinder block; 114, connecting portion; 115, process hole; 116, exhaust hole; 117, protrusion; 12, upper flange; 121, return passage; 1211, return hole; 122, flange body; 123, exhaust valve seat; 1231, flange exhaust port; 124, first yielding hole; 125, second yielding hole; 126, welding spot. Detailed Description of the Embodiments

[0023] It is important to note that the embodiments of the present disclosure and the characteristics in the embodiments can be combined under the condition of no conflicts. The present disclosure will be described below with reference to the drawings and embodiments in detail.

[0024] As shown in Fig. 1 to Fig. 6, an embodiment of the present invention provides a pump body assembly 10, where the pump body assembly 10 includes a cylinder 11 and an upper flange 12. An air suction hole 111 and a sliding vane groove 112 are disposed at intervals on the cylinder 11; the upper flange 12 is disposed on the cylinder 11; the upper flange 12 is disposed above the cylinder 11; a return passage 121 is disposed on the upper flange 12; the return passage 121 passes through the upper flange 12 along an axial direction of the upper flange 12; and the return passage 121 extends along a circumferential direction of the upper flange 12. Along the circumferential direction of the upper flange 12, at least one of the air suction hole 111 and the sliding vane groove 112 is disposed in a staggered manner relative to a distribution interval of the return passage 121.

[0025] It should be noted that, "Along the circumferential direction of the upper flange 12, at least one of the air suction hole 111 and the sliding vane groove 112 is disposed in a staggered manner relative to a distribution interval of the return passage 121" means that at least one of the air suction hole in the upper flange 12 and the sliding vane groove 112 is not disposed in a corresponding manner relative to the return passage 121 in the circumferential direction of the upper flange 12 and does not have an overlapping and staggered area. The remaining definition of the staggered arrangement in the present invention is referred to the above explanations.

[0026] According to the pump body assembly 10 provided in this embodiment, at least one of the air suction hole 111 and the sliding vane groove 112 is disposed in a staggered manner relative to the distribution interval of the return passage 121, the possibility that the oil liquid flowing out through the return passage 121 enters at least one of the air suction hole 111 and the sliding vane groove 112 can be effectively reduced, thereby effectively reducing an ineffective reflux condition of the frozen oil liquid, so that the frozen oil liquid can be smoothly returned to the oil pool, so as to ensure that the oil pool has sufficient oil liquid. Therefore, by means of the pump body assembly 10 provided in the present embodiment, the technical problem in the prior art that the liquid frozen oil cannot smoothly flow back into the oil pool can be solved.

[0027] In addition, by means of the described structural arrangement, since the air suction holes 111 and the sliding vane grooves 112 are both hollow structures, the return passage 121 is also hollow structures, such that the case where the hollow structures are oppositely arranged, the strength of the structures is weaker due to the hollow structures, and even vibration noise is strengthened can be avoided. By optimizing the design of the structure of the upper flange 12, the invalidation design of the return passage 121 of the upper flange 12 is avoided, and at the same time, the rigidity of the upper flange 12 and the flow area of the return passage 121 are ensured, thereby optimizing the structural rigidity of the oil return passage of the compressor and the pump body assembly 10, improving the reliability of the compressor, and at the same time, avoiding the problem of vibration noise of the compressor caused by insufficient rigidity.

[0028] In this embodiment, the air suction hole 111 and the sliding vane groove 112 are disposed at intervals along the circumferential direction of the cylinder 11. Along the circumferential direction of the upper flange 12, the distribution intervals of the air suction hole 111 and the sliding vane groove 112 are staggered from the distribution interval of the return passage 121. By means of such a structural arrangement, the possibility of the frozen oil liquid entering into the air suction hole 111 and the sliding vane groove 112 can be better avoided, and invalid oil return is avoided, thereby better ensuring that the frozen oil liquid can smoothly return to the oil pool, and avoiding the lack of oil liquid in the oil pool.

[0029] Specifically, the cylinder 11 includes a cylinder block 113 and a connecting portion 114 that are connected to each other. The connecting portion 114 is provided to protrude from a side portion of the cylinder block 113. The connecting portion 114 is provided with the air suction hole 111 and the sliding vane groove 112. The connecting portion 114 extends circumferentially along the cylinder block 113. Wherein, along the circumferential direction of the upper flange 12, the connecting portion 114 and the distribution interval of the return passage 121 are disposed in a staggered manner. By adopting such a structure arrangement, the entity structure where the air suction hole 111 and the sliding vane groove 112 are located is that the connecting portion 114 is disposed in a staggered manner with respect to the return passage 121 as a whole, in this way, it can be effectively avoided that the oil liquid at the return passage 121 flows into the connecting portion 114, thereby better avoiding that the frozen oil liquid flows into the air suction hole 111 and the sliding vane groove 112 via the connecting portion 114, thus, the convenience of returning the frozen oil to the oil pool can be further ensured.

[0030] Specifically, the cylinder 11 is further provided with an exhaust hole 116.

[0031] In the present embodiment, the upper flange 12 includes a flange body 122 and an exhaust valve seat 123 which are connected to each other; along the circumferential direction of the upper flange 12, the exhaust valve seat 123 and the distribution interval of the return passage 121 are disposed in a staggered manner. With such a structure arrangement, since the exhaust valve seat 123 is of a sinking groove structure, the exhaust valve seat 123 is a region of low rigidity of the upper flange 12, and the return passage 121 is also of a hollowed-out structure, i.e. low rigidity. When the distribution intervals of the exhaust valve seat 123 and the return passage 121 is distributed in a concentrated manner in one region, the rigidity in this region will be low, and the overall structural strength and structural stability of the upper flange 12 will not be facilitated. By arranging the exhaust valve seat 123 and the upper flange 12 in a staggered manner along the circumferential direction of the upper flange 12, the central distribution of the two regions of low rigidity can be avoided, the overall strength of the upper flange 12 is prevented from being weak, and the overall strength of the upper flange 12 can be improved.

[0032] Specifically, the exhaust valve seat 123 is provided with a flanged exhaust port 1231.

[0033] Specifically, the return passage 121 is distributed at an angle range of 2π-θ, the position span angle of the exhaust valve seat 123 is α, and the position span angle of the connection structure at the air suction hole 111 of the cylinder 11 and the sliding vane groove 112 is β, 2π-θ and α, 2π-θ and β respectively do not have an overlapping area. Thus, the physical structure of the return passage 121 of the upper flange 12 and the outer edge of the cylinder 11 is a connection structure without interference and overlapping, so that the rigidity of the flange is improved while ineffective return flow is avoided, the timely and smooth return flow of the refrigerating lubricating oil is improved, the oil level of the oil pool and the oil supply and lubrication of the pump body are ensured, and the reliability risk of the compressor caused by insufficient lubrication is reduced, and the vibration noise is optimized at the same time. Further, the return passage 121 of the upper flange 12 reasonably avoids the region of low rigidity of the upper flange 12 (the vicinity of the exhaust valve seat 123), thus greatly improving the rigidity of the upper flange 12, and further optimizing the vibration noise of the compressor.

[0034] Specifically, the exhaust volume of the pump body assembly is V, the operating frequency of the pump body assembly is f, and the flow area of the return passage 121 is S, where 0.1 ≤ S / (0.001 Vf) ≤ 0.6. By means of such a structural arrangement, the compressor can have an oil return flow area of the upper flange 12 matched thereto when running at a high frequency, furthermore, it is ensured that the frozen oil mixed in the gas can be smoothly returned to the oil pool at the bottom of the compressor in time after being liquefied and separated, this reduces a reliability problem of wear of pump parts caused by insufficient oil supply and lubrication of the pump body due to oil shortage at the bottom of the oil pool caused by low oil return during high-frequency operation of the compressor.

[0035] Preferably, 0.24 ≤ S / (0.001 Vf) ≤ 0.39, which makes it possible to more effectively ensure a better adaptation of the oil return flow area of the upper flange 12 to the corresponding high-frequency operating mode.

[0036] It should be noted that the maximum operating frequency of a conventional compressor in the prior art is substantially about 120 Hz, while the maximum operating frequency of the high speed compressor in the present invention is above 120 Hz or far greater than 120 Hz, the maximum air delivery amount (Vf) is greatly improved, and since the air contains a large amount of frozen oil, the frozen oil flowing with the air delivery necessarily increases greatly, the evaluation criterion S / (0.001 Vf) can be simply understood to be the per-unit flow area of the intake air flow relative to a conventional compressor of the prior art, the evaluation index of the high speed compressor will be greatly reduced (which is necessarily less than the prior art, and cannot be the same level as the prior art), too small may cause an insufficient unit flow area, resulting in that a large amount of frozen oil cannot flow back smoothly. Preferably, the evaluation index should be as large as possible, but the hollow area S cannot be increased without limit due to the limitation of the design space, furthermore, increasing S necessarily causes the strength of the flange to become poor, thereby affecting the connection strength and vibration transmission of the compressor, the problem of the vibration of a high-speed compressor is solved. The preferred range is provided herein, and the lower limit of the evaluation index is limited, so that the unit flow area is not too small and the oil circulation is not smooth, in addition, a design space limitation and structural strength are considered in a synchronous manner, and an upper limit value is proposed to be preferable, so as to optimize a high-speed compressor circulation backflow problem.

[0037] In this embodiment, a radius of the central circle corresponding to the return passage 121 is r 0 , an outer radius of the upper flange 12 is R, and the maximum axial width of the return passage 121 is w; wherein 1- (r 0 +0.5w) / R≥0.05. Specifically, the upper flange 12 is used for connecting with the inner wall of a housing. By means of such an arrangement, it can be ensured that a sufficient connection width is effectively optimized between the upper flange 12 and the to-be-connected member, so that sufficient connection rigidity is ensured, thereby achieving the effect of optimizing vibration noise of the compressor.

[0038] Specifically, 1- (r0+0.5w) / R=[R-(r0+0.5w)] / R=(R-R1) / R=W1 / R≥0.05, W1 being a connecting entity of a flange and an inner wall of the housing, and being a main transmission path of vibration noise of a compressor. With regard to the high speed compressor of the present invention, the hollow area S needs to be as large as possible, but cannot be increased without limit due to the design space limitation, and the increase of S inevitably causes the strength of the flange to become poor, thereby affecting the connection strength and vibration transmission of the compressor, and making the compressor vibrate at a high speed. The lower limit value of the connection rigidity between the flange and the inner wall of the shell is further limited by restraining the value of the W1 / R, thereby avoiding the problem of abnormal vibration noise of the high speed compressor caused by insufficient connection rigidity.

[0039] Preferably, 1-(r0+0.5w) / R ≥ 0.07 so as to better ensure the connection strength and rigidity of the compressor.

[0040] Specifically, the upper flange 12 is welded with the to-be-connected member; along the circumferential direction of the upper flange 12, the welding joint where the upper flange 12 is welded to the to-be-connected part is offset from the distribution interval of the return passage 121. The foregoing solution may also be understood as that the welding spot 126 of the upper flange 12 is disposed on a solid part of the upper flange 12, and the to-be-connected part is the housing. In this way, it is convenient to effectively improve the connection stiffness between the flange and the shell, thereby reducing the vibration noise of the compressor.

[0041] In this embodiment, a tail hole 1121 is disposed at an end of the sliding vane groove 112, the tail hole 1121 is a circular hole, and a diameter of the tail hole 1121 is d; the upper flange 12 is provided with a first yielding hole 124 corresponding to the tail hole 1121, the first yielding hole 124 is disposed opposite the tail hole 1121, the first yielding hole 124 is a circular hole, and a diameter of the first yielding hole 124 is D; wherein d ≤ D ≤ d + 0.5mm. By adopting such a structure arrangement, it is possible to ensure the rigidity of the upper flange 12 while maximizing the effective oil return flow area of the upper flange 12.

[0042] Specifically, the first yielding hole 124 is axially arranged through the upper flange 12.

[0043] Preferably, in this embodiment, the axis of symmetry of the tail hole is arranged coaxially with the axis of symmetry of the first yielding hole 124.

[0044] In this embodiment, the cylinder 11 is provided with a process hole 115; along the circumferential direction of the cylinder 11, the process holes 115 are arranged in a staggered manner with respect to the distribution interval of the return passage 121. By means of such a structural arrangement, the case where the intensity of the gas cylinder 11 is weaker due to the overlapping of the process holes 115 and the return passage 121 in the circumferential direction can be effectively avoided. It should be noted that, the foregoing arrangement may also be understood as that there is no overlap region between the return passage 121 and the entity portion of the cylinder 11 corresponding to the process hole 115.

[0045] Specifically, the upper flange 12 is provided with a second yielding hole 125 opposite to the process hole 115, both the process hole 115 and the second yielding hole 125 are circular holes, the diameter of the process hole 115 is d1, and the diameter of the second yielding hole 125 is D1, where d1 ≤ D1 ≤ d1 + 0.5mm. By means of such a structure arrangement, the cylinder 11 has a raised portion 117, and the process hole 115 is provided on the protrusion 117, so that in the case of an ineffective backflow structure caused by interference between a hollow flow passage of the upper flange 12 and the protrusion 117 where the process hole 115 of the cylinder 11 is located, the upper flange 12 is ensured to have the maximum effective oil return flow area at the same time.

[0046] Specifically, the second yielding hole 125 is axially arranged through the upper flange 12.

[0047] In this embodiment, the return passage 121 includes a plurality of return holes 1211 disposed at intervals along the circumferential direction of the upper flange 12, and the distance between two of the return holes 1211 at the two ends of the plurality of return holes 1211 forms a distribution interval of the return passage 121. When the return passage 121 includes a plurality of return holes 1211, the circulation section of the return passage 121 is the sum of the circulation section areas of the plurality of return holes 1211.

[0048] Fig. 7 shows a structural rigidity simulation diagram of the upper flange 12 in this embodiment, and the upper flange 12 in this embodiment and the upper flange in the prior art are respectively applied to a specific compressor model to correspond to a specific operating condition of the compressor. According to a comparison, it can be seen that compared with the upper flange in the prior art, the upper flange 12 in the present invention can achieve an increase of 39.67% in oil return flow area and an increase of 31.51% in oil return amount, effectively optimize the oil return effect, and ensure that the flange has a substantially equivalent rigidity (slightly reduced by 0.41%). Comparison itemState of the art Upper flangeAdditive of the present invention Upper flangeOptimization percentageOil Return Flow Area (mm 2< )600838+39.67%Oil return (g / s)7.64510.054+31.51 %Flange stiffness (kN / mm)72.672.3- 0.41%

[0049] Specifically, by using the described specific model as a carrier, the test effect of the compressor oil circulation rate under a specific high-frequency operating condition, the noise and the vibration of the shell near the upper flange are verified. The results show that the pump body assembly of the present invention and the compressor using same can effectively optimize compressor oil circulation rate, noise and housing vibration. Comparison itemConventional Upper flangeThis invention Upper flangeOil circulation rate2.35%0.12%Noise (dBA)71.268.4Shell vibration (position m / s 2< near upper flange)14.2513.43

[0050] Embodiment 2 of the present invention provides a compressor, including the pump body assembly 10 provided in Embodiment 1. The compressor is a rolling-rotor compressor, which may be a single-cylinder, two-cylinder, or multi-cylinder rotor compressor.

[0051] A third embodiment of the present disclosure provides an air conditioner, which includes the compressor according to the second embodiment.

[0052] From the above description, it can be seen that the described embodiments of the present invention achieve the following technical effects: optimizing the design by the structure of the upper flange, and at the same time, the rigidity of the upper flange and the circulation area of the upper return passage are ensured while avoiding an invalid design of the upper return passage, thus, the return passage of the compressor is optimized, and it is ensured that the backflow frozen oil can smoothly flow back to the oil pool in time, avoiding a reliability problem of wear of a friction auxiliary component caused by insufficient oil supply of a pump body due to oil shortage of a compressor oil pool, at the same time, the rigidity of the upper flange is ensured, and the problem of vibration noise of the compressor caused by insufficient rigidity of the upper flange is avoided.

[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise, and further it should be understood that the terms "includes" and / or "including" when used in this description, specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] The relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise. Meanwhile, it should be understood that, for the convenience of description, the dimensions of the parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the enabling description, where appropriate. In all examples shown and discussed herein, any specific values should be construed as exemplary only and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like numerals and letters represent like items in the following figures, and thus, once an item is defined in a figure, it need not be further discussed in subsequent figures.

[0055] In the description of the present invention, it should be understood that orientation or position relationships indicated by orientation words such as "front, back, up, down, left, right', 'lateral, vertical, vertical, horizontal", and "top, bottom" are generally based on the orientation or position relationships shown in the accompanying drawings, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, unless specified to the contrary, merely to facilitate the description of the present invention and simplify the description, therefore, it cannot be understood as a limitation to the scope of protection of the present invention; the orientation terms "inner and outer" refer to the inner and outer relative to the outline of each component itself.

[0056] Spatially relative terms, such as "over...", "above...", "upper...", "over...", and the like, may be used herein for ease of description to describe spatial positional relationships of one device or feature with other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device depicted in the figures. For example, if the devices in the figures are inverted, devices described as "above" or "over" other devices or structures would then be oriented "under" or "under" the other devices or structures. Accordingly, the exemplary term "over..." can encompass both an orientation of "over..." and "under...". The device may be positioned in various other ways as well (rotated 90 degrees or at other orientations), and the spatially relative descriptions used herein are to be construed accordingly.

[0057] In addition, it should be noted that, terms such as "first" and "second" are used to define parts only for the convenience of distinguishing corresponding parts, and if no other statement is made, the described terms do not have a special meaning, and therefore cannot be construed as limiting the scope of protection of the present invention.

[0058] The foregoing descriptions are merely exemplary embodiments of the present invention, but are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present invention shall fall within the scope of protection of the present invention.

Examples

Embodiment Construction

[0023]It is important to note that the embodiments of the present disclosure and the characteristics in the embodiments can be combined under the condition of no conflicts. The present disclosure will be described below with reference to the drawings and embodiments in detail.

[0024]As shown in Fig. 1 to Fig. 6, an embodiment of the present invention provides a pump body assembly 10, where the pump body assembly 10 includes a cylinder 11 and an upper flange 12. An air suction hole 111 and a sliding vane groove 112 are disposed at intervals on the cylinder 11; the upper flange 12 is disposed on the cylinder 11; the upper flange 12 is disposed above the cylinder 11; a return passage 121 is disposed on the upper flange 12; the return passage 121 passes through the upper flange 12 along an axial direction of the upper flange 12; and the return passage 121 extends along a circumferential direction of the upper flange 12. Along the circumferential direction of the upper flange 12, at least...

[0001] This invention claims priority to Chinese Patent Invention No. 202311249295.1, filed with the State Intellectual Property Office of the P. R.C on September 25, 2023, and entitled "Pump body assembly, compressor and air conditioner".Technical Field

[0002] The present invention relates to the field of compressor technologies, and in particular, to a pump body assembly, a compressor, and an air conditioner.Background

[0003] Currently, a compressor in the art known to inventors mainly includes a pump body component, a motor component, a liquid separator component, a housing component, and the like, where the housing component is configured to form a closed cavity structure, and the pump body component and the motor component are disposed inside the housing. The pump body assembly mainly includes main components, such as an upper flange, a cylinder, a crankshaft, a roller, a lower flange and a sliding piece, and the components cooperate to form a high-pressure exhaust cavity and a low-pressure air suction cavity. The motor assembly mainly includes a rotor assembly and a stator assembly. The lower part of the housing is an oil pool, and a certain amount of chilled oil is contained in the oil pool.

[0004] With regard to a rotary compressor, the rotary compressor generates a driving force for a crank shaft of a pump body by means of a motor; and under the rotary driving action of the crank shaft, the crank shaft eccentric portion structure is used to make the sliding piece perform reciprocating motion in a sliding vane groove, so that the volume of a suction and exhaust cavity of the compressor periodically changes, thereby realizing the processes of the compressor periodically sucking, compressing and discharging gas. After the gas discharged from the body cavity of the pump body enters the space of the lower cavity of the motor, the gas mainly flows to the upper cavity of the motor through the through holes of the rotor, and then is discharged from the compressor and enters the air conditioning system. The gas discharged from the pump body is usually a gas mixture of oil and gas of refrigerant and refrigeration oil, and the gas lubricating oil mixed in the refrigerant through the exhaust gas, liquid refrigeration and separation are performed by impacting a part or an oil retaining structure of an electric motor, and the separated liquid refrigerating oil mainly flows back to a lower cavity of the electric motor through an edge cutting gap between an inner wall of a shell and an outer circumferential surface of an electric motor stator, and further flows back to the compressor oil pool through the hollow flow passage of the upper flange.

[0005] However, during the backflow process of the liquid cooling oil, a situation that a part of the liquid cooling oil flows back to the air suction hole of the cylinder and the sliding vane groove of the cylinder often occurs, in this way, an ineffective backflow situation of the liquid frozen oil is caused, so that a part of the liquid frozen oil cannot be returned to the oil pool in time, as a result, the compressor oil pool is out of oil, thereby causing a reliability problem of wear of the friction auxiliary component due to insufficient oil supply from the pump body.Summary

[0006] The main purpose of the present invention is to provide a pump body assembly, a compressor and an air conditioner, so as to solve the technical problem in the prior art that liquid frozen oil cannot smoothly flow back into an oil pool.

[0007] In order to achieve the described object, according to one aspect of the present invention, a pump body assembly is provided, including: an cylinder provided with an air suction hole and a sliding vane groove at intervals; an upper flange disposed on the cylinder, the upper flange being disposed above the cylinder, a return passage being disposed on the upper flange, the return passage passing through the upper flange in the axial direction of the upper flange, and the return passage extending in a circumferential direction of the upper flange; wherein, along the circumferential direction of the upper flange, at least one of the air suction hole and the sliding vane groove is disposed in a staggered manner relative to a distribution interval of the return passage.

[0008] Further, the air suction hole and the sliding vane groove are arranged at intervals along a circumferential direction of the cylinder; wherein, along the circumferential direction of the upper flange, distribution intervals of the suction hole and the sliding vane groove are disposed in a staggered manner relative to the distribution interval of the return passage.

[0009] Further, the cylinder includes a cylinder block and a connecting portion which are connected to each other, wherein the connecting portion is protruded from a side portion of the cylinder body block, the connecting portion is provided with the air suction hole and the sliding vane groove, and the connecting portion extends in a circumferential direction of the cylinder block; wherein, along the circumferential direction of the upper flange, the connection portion and the distribution interval of the return passage are disposed in a staggered manner.

[0010] Further, the upper flange includes a flange body and an exhaust valve seat which are connected to each other; along the circumferential direction of the upper flange, the exhaust valve seat and the distribution interval of the return passage are disposed in a staggered manner.

[0011] Further, an exhaust volume of the pump body assembly is V, an operating frequency of the pump body assembly is f, and a flow area of the return passage is S; wherein 0.1 ≤ S / (0.001 Vf) ≤ 0.6.

[0012] Further, a radius of a central circle corresponding to the return passage is r0, an outer radius of the upper flange is R, and a maximum axial width of the return passage is w; wherein 1- (r 0 +0.5w) / R≥0.05.

[0013] Further, the upper flange is welded to a to-be-connected member; along the circumferential direction of the upper flange, the welding joint where the upper flange and the to-be-connected member are welded and the distribution interval of the return passage are disposed in a staggered manner .

[0014] Further, a tail hole is disposed at an end portion of the sliding vane groove, the tail hole is a circular hole, and a diameter of the tail hole is d; the upper flange is provided with a first yielding hole corresponding to the tail hole, the first yielding hole is disposed opposite to the tail hole, the first yielding hole is a circular hole, and a diameter of the first yielding hole is D; Wherein d ≤ D ≤ d + 0.5mm.

[0015] Further, the cylinder is provided with a process hole; along a circumferential direction of the cylinder, the process hole and the distribution interval of the return passage are disposed in a staggered manner.

[0016] Further, the upper flange is provided with a second yielding hole arranged opposite to the process hole, both the process hole and the second yielding hole are both circular holes, a diameter of the process hole is d1, and a diameter of the second yielding hole is D1; wherein d1 ≤ D1 ≤ d1 + 0.5mm.

[0017] Further, the return passage includes a plurality of return holes disposed at intervals along the circumferential direction of the upper flange, and a distance between two return holes at two ends of the plurality of return holes forms a distribution interval of the return passage.

[0018] According to another aspect of the present invention, a compressor is provided, which includes the pump body assembly provided above.

[0019] According to another aspect of the present disclosure, an air conditioner is provided, which includes the compressor provided above.

[0020] By means of the technical solution of the present invention, at least one of the air suction hole and the sliding vane groove is disposed in a staggered manner relative to a distribution interval of the return passage, the possibility that the oil liquid flowing out through the return passage enters at least one of the air suction hole and the sliding vane groove can be effectively reduced, thereby effectively reducing an ineffective reflux condition of the frozen oil liquid, so that the frozen oil liquid can be smoothly returned to the oil pool, so as to ensure that the oil pool has sufficient oil liquid. Therefore, by means of the technical solution provided in the present invention, the technical problem in the prior art that a liquid frozen oil liquid cannot smoothly flow back into an oil pool can be solved.Brief Description of the Drawings

[0021] The accompanying drawings, which form a part of the present invention, are used for providing a further understanding of the present invention. The schematic embodiments and illustrations of the present invention are used for explaining the present invention, and do not form improper limits to the present invention. In the drawings: Fig. 1 is a schematic structural diagram of an upper flange according to an embodiment of the present invention; Fig. 2 is a schematic structural view of a pump body assembly according to an embodiment of the present disclosure; Fig. 3 is a schematic structural diagram of an upper flange having a first yielding hole according to an embodiment of the present invention; Fig. 4 is a schematic structural view of an upper flange having a first yielding hole and a second yielding hole according to an embodiment of the present invention; Fig. 5 illustrates a structural schematic diagram of an upper flange having a plurality of second yielding holes according to an embodiment of the present invention; Fig. 6 is a structural schematic diagram showing the cooperation between an upper flange and an cylinder according to an embodiment of the present invention; Fig. 7 shows a structural rigidity simulation diagram of an upper flange according to an embodiment of the present invention.

[0022] The figures include the following reference signs: 10, pump body assembly; 11, cylinder; 111, air suction hole; 112, sliding vane groove; 1121, tail hole; 113, cylinder block; 114, connecting portion; 115, process hole; 116, exhaust hole; 117, protrusion; 12, upper flange; 121, return passage; 1211, return hole; 122, flange body; 123, exhaust valve seat; 1231, flange exhaust port; 124, first yielding hole; 125, second yielding hole; 126, welding spot. Detailed Description of the Embodiments

[0023] It is important to note that the embodiments of the present disclosure and the characteristics in the embodiments can be combined under the condition of no conflicts. The present disclosure will be described below with reference to the drawings and embodiments in detail.

[0024] As shown in Fig. 1 to Fig. 6, an embodiment of the present invention provides a pump body assembly 10, where the pump body assembly 10 includes a cylinder 11 and an upper flange 12. An air suction hole 111 and a sliding vane groove 112 are disposed at intervals on the cylinder 11; the upper flange 12 is disposed on the cylinder 11; the upper flange 12 is disposed above the cylinder 11; a return passage 121 is disposed on the upper flange 12; the return passage 121 passes through the upper flange 12 along an axial direction of the upper flange 12; and the return passage 121 extends along a circumferential direction of the upper flange 12. Along the circumferential direction of the upper flange 12, at least one of the air suction hole 111 and the sliding vane groove 112 is disposed in a staggered manner relative to a distribution interval of the return passage 121.

[0025] It should be noted that, "Along the circumferential direction of the upper flange 12, at least one of the air suction hole 111 and the sliding vane groove 112 is disposed in a staggered manner relative to a distribution interval of the return passage 121" means that at least one of the air suction hole in the upper flange 12 and the sliding vane groove 112 is not disposed in a corresponding manner relative to the return passage 121 in the circumferential direction of the upper flange 12 and does not have an overlapping and staggered area. The remaining definition of the staggered arrangement in the present invention is referred to the above explanations.

[0026] According to the pump body assembly 10 provided in this embodiment, at least one of the air suction hole 111 and the sliding vane groove 112 is disposed in a staggered manner relative to the distribution interval of the return passage 121, the possibility that the oil liquid flowing out through the return passage 121 enters at least one of the air suction hole 111 and the sliding vane groove 112 can be effectively reduced, thereby effectively reducing an ineffective reflux condition of the frozen oil liquid, so that the frozen oil liquid can be smoothly returned to the oil pool, so as to ensure that the oil pool has sufficient oil liquid. Therefore, by means of the pump body assembly 10 provided in the present embodiment, the technical problem in the prior art that the liquid frozen oil cannot smoothly flow back into the oil pool can be solved.

[0027] In addition, by means of the described structural arrangement, since the air suction holes 111 and the sliding vane grooves 112 are both hollow structures, the return passage 121 is also hollow structures, such that the case where the hollow structures are oppositely arranged, the strength of the structures is weaker due to the hollow structures, and even vibration noise is strengthened can be avoided. By optimizing the design of the structure of the upper flange 12, the invalidation design of the return passage 121 of the upper flange 12 is avoided, and at the same time, the rigidity of the upper flange 12 and the flow area of the return passage 121 are ensured, thereby optimizing the structural rigidity of the oil return passage of the compressor and the pump body assembly 10, improving the reliability of the compressor, and at the same time, avoiding the problem of vibration noise of the compressor caused by insufficient rigidity.

[0028] In this embodiment, the air suction hole 111 and the sliding vane groove 112 are disposed at intervals along the circumferential direction of the cylinder 11. Along the circumferential direction of the upper flange 12, the distribution intervals of the air suction hole 111 and the sliding vane groove 112 are staggered from the distribution interval of the return passage 121. By means of such a structural arrangement, the possibility of the frozen oil liquid entering into the air suction hole 111 and the sliding vane groove 112 can be better avoided, and invalid oil return is avoided, thereby better ensuring that the frozen oil liquid can smoothly return to the oil pool, and avoiding the lack of oil liquid in the oil pool.

[0029] Specifically, the cylinder 11 includes a cylinder block 113 and a connecting portion 114 that are connected to each other. The connecting portion 114 is provided to protrude from a side portion of the cylinder block 113. The connecting portion 114 is provided with the air suction hole 111 and the sliding vane groove 112. The connecting portion 114 extends circumferentially along the cylinder block 113. Wherein, along the circumferential direction of the upper flange 12, the connecting portion 114 and the distribution interval of the return passage 121 are disposed in a staggered manner. By adopting such a structure arrangement, the entity structure where the air suction hole 111 and the sliding vane groove 112 are located is that the connecting portion 114 is disposed in a staggered manner with respect to the return passage 121 as a whole, in this way, it can be effectively avoided that the oil liquid at the return passage 121 flows into the connecting portion 114, thereby better avoiding that the frozen oil liquid flows into the air suction hole 111 and the sliding vane groove 112 via the connecting portion 114, thus, the convenience of returning the frozen oil to the oil pool can be further ensured.

[0030] Specifically, the cylinder 11 is further provided with an exhaust hole 116.

[0031] In the present embodiment, the upper flange 12 includes a flange body 122 and an exhaust valve seat 123 which are connected to each other; along the circumferential direction of the upper flange 12, the exhaust valve seat 123 and the distribution interval of the return passage 121 are disposed in a staggered manner. With such a structure arrangement, since the exhaust valve seat 123 is of a sinking groove structure, the exhaust valve seat 123 is a region of low rigidity of the upper flange 12, and the return passage 121 is also of a hollowed-out structure, i.e. low rigidity. When the distribution intervals of the exhaust valve seat 123 and the return passage 121 is distributed in a concentrated manner in one region, the rigidity in this region will be low, and the overall structural strength and structural stability of the upper flange 12 will not be facilitated. By arranging the exhaust valve seat 123 and the upper flange 12 in a staggered manner along the circumferential direction of the upper flange 12, the central distribution of the two regions of low rigidity can be avoided, the overall strength of the upper flange 12 is prevented from being weak, and the overall strength of the upper flange 12 can be improved.

[0032] Specifically, the exhaust valve seat 123 is provided with a flanged exhaust port 1231.

[0033] Specifically, the return passage 121 is distributed at an angle range of 2π-θ, the position span angle of the exhaust valve seat 123 is α, and the position span angle of the connection structure at the air suction hole 111 of the cylinder 11 and the sliding vane groove 112 is β, 2π-θ and α, 2π-θ and β respectively do not have an overlapping area. Thus, the physical structure of the return passage 121 of the upper flange 12 and the outer edge of the cylinder 11 is a connection structure without interference and overlapping, so that the rigidity of the flange is improved while ineffective return flow is avoided, the timely and smooth return flow of the refrigerating lubricating oil is improved, the oil level of the oil pool and the oil supply and lubrication of the pump body are ensured, and the reliability risk of the compressor caused by insufficient lubrication is reduced, and the vibration noise is optimized at the same time. Further, the return passage 121 of the upper flange 12 reasonably avoids the region of low rigidity of the upper flange 12 (the vicinity of the exhaust valve seat 123), thus greatly improving the rigidity of the upper flange 12, and further optimizing the vibration noise of the compressor.

[0034] Specifically, the exhaust volume of the pump body assembly is V, the operating frequency of the pump body assembly is f, and the flow area of the return passage 121 is S, where 0.1 ≤ S / (0.001 Vf) ≤ 0.6. By means of such a structural arrangement, the compressor can have an oil return flow area of the upper flange 12 matched thereto when running at a high frequency, furthermore, it is ensured that the frozen oil mixed in the gas can be smoothly returned to the oil pool at the bottom of the compressor in time after being liquefied and separated, this reduces a reliability problem of wear of pump parts caused by insufficient oil supply and lubrication of the pump body due to oil shortage at the bottom of the oil pool caused by low oil return during high-frequency operation of the compressor.

[0035] Preferably, 0.24 ≤ S / (0.001 Vf) ≤ 0.39, which makes it possible to more effectively ensure a better adaptation of the oil return flow area of the upper flange 12 to the corresponding high-frequency operating mode.

[0036] It should be noted that the maximum operating frequency of a conventional compressor in the prior art is substantially about 120 Hz, while the maximum operating frequency of the high speed compressor in the present invention is above 120 Hz or far greater than 120 Hz, the maximum air delivery amount (Vf) is greatly improved, and since the air contains a large amount of frozen oil, the frozen oil flowing with the air delivery necessarily increases greatly, the evaluation criterion S / (0.001 Vf) can be simply understood to be the per-unit flow area of the intake air flow relative to a conventional compressor of the prior art, the evaluation index of the high speed compressor will be greatly reduced (which is necessarily less than the prior art, and cannot be the same level as the prior art), too small may cause an insufficient unit flow area, resulting in that a large amount of frozen oil cannot flow back smoothly. Preferably, the evaluation index should be as large as possible, but the hollow area S cannot be increased without limit due to the limitation of the design space, furthermore, increasing S necessarily causes the strength of the flange to become poor, thereby affecting the connection strength and vibration transmission of the compressor, the problem of the vibration of a high-speed compressor is solved. The preferred range is provided herein, and the lower limit of the evaluation index is limited, so that the unit flow area is not too small and the oil circulation is not smooth, in addition, a design space limitation and structural strength are considered in a synchronous manner, and an upper limit value is proposed to be preferable, so as to optimize a high-speed compressor circulation backflow problem.

[0037] In this embodiment, a radius of the central circle corresponding to the return passage 121 is r 0 , an outer radius of the upper flange 12 is R, and the maximum axial width of the return passage 121 is w; wherein 1- (r 0 +0.5w) / R≥0.05. Specifically, the upper flange 12 is used for connecting with the inner wall of a housing. By means of such an arrangement, it can be ensured that a sufficient connection width is effectively optimized between the upper flange 12 and the to-be-connected member, so that sufficient connection rigidity is ensured, thereby achieving the effect of optimizing vibration noise of the compressor.

[0038] Specifically, 1- (r0+0.5w) / R=[R-(r0+0.5w)] / R=(R-R1) / R=W1 / R≥0.05, W1 being a connecting entity of a flange and an inner wall of the housing, and being a main transmission path of vibration noise of a compressor. With regard to the high speed compressor of the present invention, the hollow area S needs to be as large as possible, but cannot be increased without limit due to the design space limitation, and the increase of S inevitably causes the strength of the flange to become poor, thereby affecting the connection strength and vibration transmission of the compressor, and making the compressor vibrate at a high speed. The lower limit value of the connection rigidity between the flange and the inner wall of the shell is further limited by restraining the value of the W1 / R, thereby avoiding the problem of abnormal vibration noise of the high speed compressor caused by insufficient connection rigidity.

[0039] Preferably, 1-(r0+0.5w) / R ≥ 0.07 so as to better ensure the connection strength and rigidity of the compressor.

[0040] Specifically, the upper flange 12 is welded with the to-be-connected member; along the circumferential direction of the upper flange 12, the welding joint where the upper flange 12 is welded to the to-be-connected part is offset from the distribution interval of the return passage 121. The foregoing solution may also be understood as that the welding spot 126 of the upper flange 12 is disposed on a solid part of the upper flange 12, and the to-be-connected part is the housing. In this way, it is convenient to effectively improve the connection stiffness between the flange and the shell, thereby reducing the vibration noise of the compressor.

[0041] In this embodiment, a tail hole 1121 is disposed at an end of the sliding vane groove 112, the tail hole 1121 is a circular hole, and a diameter of the tail hole 1121 is d; the upper flange 12 is provided with a first yielding hole 124 corresponding to the tail hole 1121, the first yielding hole 124 is disposed opposite the tail hole 1121, the first yielding hole 124 is a circular hole, and a diameter of the first yielding hole 124 is D; wherein d ≤ D ≤ d + 0.5mm. By adopting such a structure arrangement, it is possible to ensure the rigidity of the upper flange 12 while maximizing the effective oil return flow area of the upper flange 12.

[0042] Specifically, the first yielding hole 124 is axially arranged through the upper flange 12.

[0043] Preferably, in this embodiment, the axis of symmetry of the tail hole is arranged coaxially with the axis of symmetry of the first yielding hole 124.

[0044] In this embodiment, the cylinder 11 is provided with a process hole 115; along the circumferential direction of the cylinder 11, the process holes 115 are arranged in a staggered manner with respect to the distribution interval of the return passage 121. By means of such a structural arrangement, the case where the intensity of the gas cylinder 11 is weaker due to the overlapping of the process holes 115 and the return passage 121 in the circumferential direction can be effectively avoided. It should be noted that, the foregoing arrangement may also be understood as that there is no overlap region between the return passage 121 and the entity portion of the cylinder 11 corresponding to the process hole 115.

[0045] Specifically, the upper flange 12 is provided with a second yielding hole 125 opposite to the process hole 115, both the process hole 115 and the second yielding hole 125 are circular holes, the diameter of the process hole 115 is d1, and the diameter of the second yielding hole 125 is D1, where d1 ≤ D1 ≤ d1 + 0.5mm. By means of such a structure arrangement, the cylinder 11 has a raised portion 117, and the process hole 115 is provided on the protrusion 117, so that in the case of an ineffective backflow structure caused by interference between a hollow flow passage of the upper flange 12 and the protrusion 117 where the process hole 115 of the cylinder 11 is located, the upper flange 12 is ensured to have the maximum effective oil return flow area at the same time.

[0046] Specifically, the second yielding hole 125 is axially arranged through the upper flange 12.

[0047] In this embodiment, the return passage 121 includes a plurality of return holes 1211 disposed at intervals along the circumferential direction of the upper flange 12, and the distance between two of the return holes 1211 at the two ends of the plurality of return holes 1211 forms a distribution interval of the return passage 121. When the return passage 121 includes a plurality of return holes 1211, the circulation section of the return passage 121 is the sum of the circulation section areas of the plurality of return holes 1211.

[0048] Fig. 7 shows a structural rigidity simulation diagram of the upper flange 12 in this embodiment, and the upper flange 12 in this embodiment and the upper flange in the prior art are respectively applied to a specific compressor model to correspond to a specific operating condition of the compressor. According to a comparison, it can be seen that compared with the upper flange in the prior art, the upper flange 12 in the present invention can achieve an increase of 39.67% in oil return flow area and an increase of 31.51% in oil return amount, effectively optimize the oil return effect, and ensure that the flange has a substantially equivalent rigidity (slightly reduced by 0.41%). Comparison itemState of the art Upper flangeAdditive of the present invention Upper flangeOptimization percentageOil Return Flow Area (mm 2< )600838+39.67%Oil return (g / s)7.64510.054+31.51 %Flange stiffness (kN / mm)72.672.3- 0.41%

[0049] Specifically, by using the described specific model as a carrier, the test effect of the compressor oil circulation rate under a specific high-frequency operating condition, the noise and the vibration of the shell near the upper flange are verified. The results show that the pump body assembly of the present invention and the compressor using same can effectively optimize compressor oil circulation rate, noise and housing vibration. Comparison itemConventional Upper flangeThis invention Upper flangeOil circulation rate2.35%0.12%Noise (dBA)71.268.4Shell vibration (position m / s 2< near upper flange)14.2513.43

[0050] Embodiment 2 of the present invention provides a compressor, including the pump body assembly 10 provided in Embodiment 1. The compressor is a rolling-rotor compressor, which may be a single-cylinder, two-cylinder, or multi-cylinder rotor compressor.

[0051] A third embodiment of the present disclosure provides an air conditioner, which includes the compressor according to the second embodiment.

[0052] From the above description, it can be seen that the described embodiments of the present invention achieve the following technical effects: optimizing the design by the structure of the upper flange, and at the same time, the rigidity of the upper flange and the circulation area of the upper return passage are ensured while avoiding an invalid design of the upper return passage, thus, the return passage of the compressor is optimized, and it is ensured that the backflow frozen oil can smoothly flow back to the oil pool in time, avoiding a reliability problem of wear of a friction auxiliary component caused by insufficient oil supply of a pump body due to oil shortage of a compressor oil pool, at the same time, the rigidity of the upper flange is ensured, and the problem of vibration noise of the compressor caused by insufficient rigidity of the upper flange is avoided.

[0053] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments in accordance with the present invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise, and further it should be understood that the terms "includes" and / or "including" when used in this description, specify the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] The relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the invention unless specifically stated otherwise. Meanwhile, it should be understood that, for the convenience of description, the dimensions of the parts shown in the drawings are not drawn according to the actual proportional relationship. Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the enabling description, where appropriate. In all examples shown and discussed herein, any specific values should be construed as exemplary only and not as limiting. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like numerals and letters represent like items in the following figures, and thus, once an item is defined in a figure, it need not be further discussed in subsequent figures.

[0055] In the description of the present invention, it should be understood that orientation or position relationships indicated by orientation words such as "front, back, up, down, left, right', 'lateral, vertical, vertical, horizontal", and "top, bottom" are generally based on the orientation or position relationships shown in the accompanying drawings, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, unless specified to the contrary, merely to facilitate the description of the present invention and simplify the description, therefore, it cannot be understood as a limitation to the scope of protection of the present invention; the orientation terms "inner and outer" refer to the inner and outer relative to the outline of each component itself.

[0056] Spatially relative terms, such as "over...", "above...", "upper...", "over...", and the like, may be used herein for ease of description to describe spatial positional relationships of one device or feature with other devices or features as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation of the device depicted in the figures. For example, if the devices in the figures are inverted, devices described as "above" or "over" other devices or structures would then be oriented "under" or "under" the other devices or structures. Accordingly, the exemplary term "over..." can encompass both an orientation of "over..." and "under...". The device may be positioned in various other ways as well (rotated 90 degrees or at other orientations), and the spatially relative descriptions used herein are to be construed accordingly.

[0057] In addition, it should be noted that, terms such as "first" and "second" are used to define parts only for the convenience of distinguishing corresponding parts, and if no other statement is made, the described terms do not have a special meaning, and therefore cannot be construed as limiting the scope of protection of the present invention.

[0058] The foregoing descriptions are merely exemplary embodiments of the present invention, but are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modifications, equivalent replacements, improvements and the like made within the spirit and principle of the present invention shall fall within the scope of protection of the present invention.

Examples

Embodiment Construction

[0023]It is important to note that the embodiments of the present disclosure and the characteristics in the embodiments can be combined under the condition of no conflicts. The present disclosure will be described below with reference to the drawings and embodiments in detail.

[0024]As shown in Fig. 1 to Fig. 6, an embodiment of the present invention provides a pump body assembly 10, where the pump body assembly 10 includes a cylinder 11 and an upper flange 12. An air suction hole 111 and a sliding vane groove 112 are disposed at intervals on the cylinder 11; the upper flange 12 is disposed on the cylinder 11; the upper flange 12 is disposed above the cylinder 11; a return passage 121 is disposed on the upper flange 12; the return passage 121 passes through the upper flange 12 along an axial direction of the upper flange 12; and the return passage 121 extends along a circumferential direction of the upper flange 12. Along the circumferential direction of the upper flange 12, at least...

Claims

1. A pump body assembly comprising: an cylinder (11), wherein the cylinder (11) is provided with an air suction hole (111) and a sliding vane groove (112) at intervals; an upper flange (12) disposed on the cylinder (11), wherein the upper flange (12) is disposed above the cylinder (11), a return passage (121) is disposed on the upper flange (12), the return passage (121) passes through the upper flange (12) in an axial direction of the upper flange (12), and the return passage (121) extends in a circumferential direction of the upper flange (12); wherein, along the circumferential direction of the upper flange (12), at least one of the air suction hole (111) and the sliding vane groove (112) is disposed in a staggered manner relative to a distribution interval of the return passage (121).

2. The pump body assembly according to claim 1, wherein the air suction hole (111) and the sliding vane groove (112) are disposed at intervals along a circumferential direction of the cylinder (11); wherein, along the circumferential direction of the upper flange (12), distribution intervals of the air suction hole (111) and the sliding vane groove (112) are disposed in a staggered manner relative to the distribution interval of the return passage (121).

3. The pump body assembly according to claim 1, wherein the cylinder (11) comprises a cylinder block (113) and a connecting portion (114) that are connected to each other, the connecting portion (114) is protruded from a side portion of the cylinder block (113), the connecting portion (114) is provided with the air suction hole (111) and the sliding vane groove (112), and the connecting portion (114) extends in a circumferential direction of the cylinder block (113); wherein, along the circumferential direction of the upper flange (12), the connecting portion (114) and the distribution interval of the return passage (121) are disposed in a staggered manner.

4. The pump body assembly according to claim 1, wherein the upper flange (12) comprises a flange body (122) and an exhaust valve seat (123) that are connected to each other; wherein, along the circumferential direction of the upper flange (12), the exhaust valve seat (123) and the distribution interval of the return passage (121) are disposed in a staggered manner.

5. The pump body assembly according to claim 1, wherein an exhaust volume of the pump body assembly is V, an operating frequency of the pump body assembly is f, and a flow area of the return passage (121) is S; wherein 0.1 ≤ S / (0.001 Vf) ≤ 0.6.

6. The pump body assembly according to claim 1, wherein a radius of a central circle corresponding to the return passage (121) is r0, an outer radius of the upper flange (12) is R, and a maximum radial width of the return passage (121) is w; wherein 1- (r0+0.5w) / R≥0.05.

7. The pump body assembly according to Claim 1, wherein the upper flange (12) is welded to a to-be-connected member; wherein, along the circumferential direction of the upper flange (12), a welding joint where the upper flange (12) and the to-be-connected member are welded and the distribution interval of the return passage (121) are disposed in a staggered manner.

8. The pump body assembly according to claim 1, wherein a tail hole (1121) is disposed at an end of the sliding vane groove (112), the tail hole (1121) is a circular hole, and a diameter of the tail hole (1121) is d; wherein the upper flange (12) is provided with a first yielding hole (124) corresponding to the tail hole (1121), the first yielding hole (124) is disposed opposite to the tail hole (1121), the first yielding hole (124) is a circular hole, and a diameter of the first yielding hole (124) is D; wherein d ≤ D ≤ d + 0.5mm.

9. The pump body assembly according to claim 1, wherein the cylinder (11) is provided with a process hole (115); wherein, along a circumferential direction of the cylinder (11), the process hole (115) and the distribution interval of the return passage (121) are disposed in a staggered manner.

10. The pump body assembly according to claim 9, wherein the upper flange (12) is provided with a second yielding hole (125) opposite to the process hole (115), the process hole (115) and the second yielding hole (125) are both circular holes, a diameter of the process hole (115) is d1, and a diameter of the second yielding hole (125) is D1; wherein d1 ≤ D1 ≤ d1 + 0.5mm.

11. The pump body assembly according to any one of claims 1 to 10, wherein the return passage (121) comprises a plurality of return holes (1211) disposed at intervals along the circumferential direction of the upper flange (12), and a distance between two return holes (1211) at two ends of the plurality of return holes (1211) forms a distribution interval of the return passage (121).

12. A compressor, comprising the pump body assembly according to any one of claims 1 to 11.

13. An air conditioner, comprising the compressor according to claim 12.

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