CN217518858U

CN217518858U - Oil return structure of compressor, compressor and air conditioner

Info

Publication number: CN217518858U
Application number: CN202221514704.7U
Authority: CN
Inventors: 胡余生; 魏会军; 徐嘉; 刘韵
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-09-30
Anticipated expiration: 2032-06-16

Abstract

The utility model provides an oil return structure, compressor and air conditioner of compressor, the oil return structure of compressor, it includes: the oil storage device comprises a static disc and a cover body, wherein a first bulge protruding towards the cover body is arranged on the end face, facing the cover body, of the static disc, and/or a second bulge protruding towards the static disc is arranged on the end face, facing the static disc, of the cover body, the first bulge is matched with the cover body, or the second bulge is matched with the static disc, or the first bulge is matched with the second bulge so as to form a cavity used for exhausting and/or distributing oil in the periphery of the bulge, an oil storage cavity used for storing oil is formed by the periphery of the cover body and the periphery of the bulge, and the oil storage cavity is located on the radial outer side of the cavity used for exhausting and/or distributing oil. The utility model discloses an effective design on quiet dish and lid has utilized this partial space effectively for on the basis that does not increase compressor axial and radial dimension, seted up the oil storage chamber effectively, still can not increase compressor weight and size when increasing the oil storage volume of lubricating oil.

Description

Oil return structure of compressor, compressor and air conditioner

Technical Field

The utility model relates to a compressor technical field, concretely relates to oil return structure, compressor and air conditioner of compressor.

Background

The aluminum alloy scroll compressor for the vehicle has no stable oil pool inside the compressor for an oil pumping system inside the compressor to mechanically supply oil to a lubricating part, but depends on a suction refrigerant of the compressor to carry lubricating oil, and the throttling oil return design is carried out on the lubricating oil after the refrigerant and the lubricating oil are discharged and centrifugally separated. Therefore, the oil return efficiency of the centrifugal separation of the exhaust gas is critical to the performance and reliability of the compressor. The existing centrifugal separation structure is mature, the separation efficiency of the simple centrifugal separation structure is high, and the requirement that most of lubricating oil is separated from a refrigerant can be completely met. However, the separated lubricating oil flows back into the compressor again, and the prior art schemes have a large problem and mainly focus on: 1. the oil return and storage structure is unreasonable in arrangement, and the oil storage structure is easily influenced by the centrifugal separation structure, so that the oil storage amount in the actual oil storage structure is small or separated lubricating oil is taken away by the refrigerant; 2. the oil return structure directly adopts a throttling structure to communicate high pressure to a low pressure or medium pressure lubricating part, and because the throttling pressure difference is large, when a large pressure difference working condition exists in actual operation, the throttling is insufficient, so that high pressure gas enters the low pressure or medium pressure part, and the performance of the compressor is influenced; the reflux quantity is too small under the working condition of small pressure difference, the lubricating oil separated by the centrifugal separation structure cannot flow back to the compressor in time, and the redundant lubricating oil is in the separation structure and is taken away by the refrigerant again, so that the heat exchange effect of the system is poor.

Patent No. US6511530B2 discloses a structure for discharging and storing oil inside a compressor, and as shown in fig. 1, a discharge chamber 13a, an oil-gas separation chamber 11, and a lubricating oil storage chamber 15 are provided between the back surface of a fixed scroll 2 of the compressor and a discharge cover 4. The oil storage cavity 15 returns to the internal suction cavity of the compressor through the oil return channel 2a, and the circulation of lubricating oil in the compressor is realized. However, there are the following problems: in order not to influence the oil separation efficiency of the separation chamber 11, the oil storage chamber 15 is arranged in the gravity direction below the oil separation chamber, and the highest liquid level in the oil storage chamber needs to be lower than the oil outlet 14 of the oil separation chamber, otherwise, the lubricating oil enters the separation chamber to influence the oil separation effect. Therefore, the problem of the same type of oil storage chamber disclosed in CN107575383A is that the oil storage volume is small, and the excess oil is still carried into the refrigeration system by the refrigerant. Otherwise, in order to increase the volume of the oil storage chamber, the axial height of the oil storage chamber needs to be increased, which causes problems of large size, heavy weight, high production cost and the like of the compressor. Meanwhile, the pressure in the oil storage cavity is high exhaust pressure, and is influenced by the exhaust fluctuation of the pump body, and the exhaust pressure fluctuation is large, so that the liquid level in the oil storage cavity is difficult to stabilize and fluctuates greatly along with the exhaust.

Patent No. CN107605726A discloses another oil return structure, as shown in fig. 2, an oil return passage 7 in a compressor discharge cover 4 communicates a static disc 3 and a bracket 1, and a throttle passage is provided in the bracket 1, so that lubricating oil in the oil return passage 7 is introduced into a lubricating cavity 11 in the bracket 1, and lubrication of a bearing in the lubricating cavity is realized. Although directly introduce the lubricated part of key in the compressor with lubricating oil, because hold the chamber in the lubricated chamber 11, the cavity space is restricted, and most lubricating oil can not in time flow back to in the compressor in the oil return route 7, leads to a large amount of lubricating oil can get into refrigerating system along with the exhaust, influences system's heat transfer effect.

Because the scroll compressor among the prior art has oil return oil storage structure to set up unreasonablely, and the oil storage structure easily receives the influence of centrifugal separation structure, leads to in the actual oil storage structure the oil storage volume few or the lubricating oil of isolating to be taken away technical problem such as again by the refrigerant, consequently the utility model discloses research and design oil return structure, compressor and the air conditioner of a compressor.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the scroll compressor among the prior art and having the oil return oil storage structure to set up unreasonablely, lead to the defect that the oil storage volume is few in the actual oil storage structure to an oil return structure, compressor and the air conditioner of compressor are provided.

In order to solve the above problem, the utility model provides an oil return structure of compressor, it includes:

the end surface of the static disc, facing the cover body, is provided with a first bulge, facing the cover body, and/or the end surface of the cover body, facing the static disc, is provided with a second bulge;

when only the first bulge is included, the first bulge is connected with the cover body so as to form a cavity for exhausting and/or distributing oil on the inner periphery of the first bulge, and the inner periphery of the cover body and the outer periphery of the first bulge jointly form an oil storage cavity capable of storing oil;

when only the second bulge is included, the second bulge is connected with the static disc so as to form a cavity for exhausting and/or distributing oil on the inner periphery of the second bulge, and the inner periphery of the cover body and the outer periphery of the second bulge jointly form an oil storage cavity capable of storing oil;

when the oil storage cover comprises a first bulge and a second bulge at the same time, the first bulge is connected with the second bulge to form a cavity for exhausting and/or distributing oil between the first bulge and the second bulge, and the inner circumferential surface of the cover body, the first bulge and the second bulge jointly form an oil storage cavity capable of storing oil;

the oil reservoir chamber is located radially outside the air exhaust and/or oil distribution chamber.

In some embodiments, the vented and/or oil-distributing cavity includes a vent chamber and an oil-distributing chamber, the vent chamber is located at the radially inner periphery of the first protrusion, the oil-distributing chamber is located at the radially inner periphery of the second protrusion, the oil storage chamber can communicate with the oil-distributing chamber to obtain separated lubricating oil from the oil-distributing chamber, and/or the oil storage chamber can communicate with the vent chamber to obtain lubricating oil from the vent chamber.

In some embodiments, the oil reservoir comprises a static disc oil reservoir located at the first raised radial periphery and a cover oil reservoir located at the second raised radial periphery.

In some embodiments, the oil storage device further comprises a bracket, the bracket is internally provided with a medium pressure cavity, the static disc is internally provided with a first pressure stabilizing channel, the bracket is internally provided with a third pressure stabilizing channel, one end of the first pressure stabilizing channel can be communicated with the oil storage cavity, the other end of the first pressure stabilizing channel can be communicated with one end of the third pressure stabilizing channel, and the other end of the third pressure stabilizing channel is communicated with the medium pressure cavity.

In some embodiments, the crankshaft further comprises a second bearing disposed in the intermediate pressure chamber, and an axial end of the crankshaft is inserted into the intermediate pressure chamber and supported by the second bearing.

In some embodiments, the pressure stabilizing device further comprises a wear-resistant plate, the wear-resistant plate is arranged between the static disc and the bracket, a second pressure stabilizing channel is arranged on the wear-resistant plate, and the second pressure stabilizing channel is communicated between the first pressure stabilizing channel and the third pressure stabilizing channel; the third pressure stabilizing channel is a communicating groove which is formed in the support and extends for a certain distance.

In some embodiments, a first oil return channel is arranged on the static disc, one end of the first oil return channel can be communicated with the exhaust and/or oil distribution cavity, and the other end of the first oil return channel is communicated with the oil storage cavity,

be provided with second oil return passage on the wear plate, the one end of second oil return passage can with first oil return passage intercommunication, second oil return passage is in the orientation of wear plate the recess of one section distance of extension of seting up on the terminal surface of quiet dish, run through its axial both ends face on the quiet dish and still seted up third oil return passage, the one end of third oil return passage can with second oil return passage's other end intercommunication, the other end of third oil return passage with the oil storage chamber intercommunication.

In some embodiments, the wear-resistant plate is a circular cylinder structure, the center of the circular cylinder structure is provided with a central hole, and the second oil return channel is a segment of arc-shaped groove structure formed by rotating by taking the center of the central hole as a rotation center.

In some embodiments, a sink groove structure is further formed at a position where the first pressure stabilizing channel is communicated with the oil storage cavity to form a pressure stabilizing buffer cavity; and a sink groove structure is further arranged at the position where the third oil return channel is communicated with the oil storage cavity to form an oil return buffer cavity.

In some embodiments, the sealing gasket is arranged between the cover body and the static disc, a pressure stabilizing buffer cover is arranged at a position of the sealing gasket opposite to the pressure stabilizing buffer cavity, and at least one pressure stabilizing buffer hole is formed in the pressure stabilizing buffer cover; and the sealing gasket is provided with an oil return buffer cover at the position opposite to the oil return buffer cavity, and the oil return buffer cover is provided with at least one oil return buffer hole.

In some embodiments, on the axial end face of the stationary disc forming the oil storage chamber, the oil return buffer chamber is separated from the pressure stabilizing buffer chamber by a first preset distance, and the oil return buffer chamber is separated from the oil outlet oil collection chamber by a second preset distance, so that part of the oil entering the oil storage chamber through the oil return buffer chamber enters the pressure stabilizing buffer chamber, and part of the oil enters the oil outlet oil collection chamber.

In some embodiments, the cross section of the first protrusion is an annular structure, the inner circumferential wall of the first protrusion is formed as an exhaust cavity outer wall, a first pressure stabilizing baffle is arranged on the outer circumferential wall of the first protrusion, one end of the first pressure stabilizing baffle is connected with the outer circumferential wall of the first protrusion, the other end of the first pressure stabilizing baffle extends towards the radial outer circumferential wall of the static disc and is spaced from the radial outer circumferential wall of the static disc by a third preset distance, and the first pressure stabilizing baffle is located on a fluid flow path between the oil return buffer cavity and the pressure stabilizing buffer cavity; and/or, be provided with second steady voltage baffle on the internal perisporium of lid, the one end of second steady voltage baffle with the internal perisporium of lid meets, the other end court first bellied radial periphery wall extend and with first bellied radial periphery wall interval fourth predetermines the distance, just second steady voltage baffle is located the oil return cushion chamber with on the fluid flow path between the steady voltage cushion chamber.

In some embodiments, the first pressure-stabilizing baffle is at least two and is disposed at different positions on the peripheral wall of the first protrusion; the number of the second pressure stabilizing baffles is at least two, and the second pressure stabilizing baffles are arranged at different positions on the inner peripheral wall of the cover body.

In some embodiments, when the cavity for exhausting and/or distributing the oil includes an exhaust cavity, an oil return and oil collection cavity is further disposed on the first protrusion, the oil return and oil collection cavity can be communicated with the exhaust cavity, the first oil return channel is disposed inside the static disc, one end of the first oil return channel can be communicated with the oil return and oil collection cavity, and the other end of the first oil return channel penetrates through the end surface of the static disc, which faces the wear-resistant plate.

In some embodiments, the static disc is further provided with a first oil outlet channel, and one end of the first oil outlet channel is communicated with the oil storage cavity;

the oil return structure of compressor still includes casing and driving disk, the axial one end of casing with the lid meets, just quiet set with the driving disk all set up in the inside of casing, still have the low pressure chamber of breathing in the casing, quiet set with form the pump body between the driving disk and breathe in the chamber, first oil outlet channel can respectively with the low pressure chamber of breathing in with the pump body is breathed in the chamber intercommunication.

In some embodiments, a second oil outlet channel is arranged on the wear plate, and the other end of the first oil outlet channel can be communicated with one end of the second oil outlet channel; the second oil outlet channel is a groove which is formed in the end face, facing the static disc, of the wear-resisting plate and extends for a certain distance, a third oil outlet channel is formed in the end face, facing the wear-resisting plate, of the static disc, one end of the third oil outlet channel can be communicated with the other end of the second oil outlet channel, and the other end of the third oil outlet channel can be communicated with the air suction cavity of the pump body.

In some embodiments, the wear-resistant plate is a circular cylinder structure, the center of the wear-resistant plate is provided with a central hole, and the second oil outlet channel is a segment of arc-shaped groove structure formed by rotating by taking the center of the central hole as a rotation center; and a sink structure is further arranged at the position where the first oil outlet channel is communicated with the oil storage cavity to form an oil outlet and oil collection cavity.

In some embodiments, a throttling component is arranged in the third oil outlet channel, the throttling component is of a cylindrical structure, a spiral outer oil outlet channel is arranged on the outer peripheral wall of the throttling component, and an inner oil outlet channel is arranged inside the throttling component, so that fluid can flow from one end of the throttling component to the other end of the throttling component through the outer oil outlet channel and/or the inner oil outlet channel.

In some embodiments, the oil return structure of the compressor further includes a first bearing, a third bearing and an eccentric sleeve, the compressor includes a motor, the first bearing is disposed at an axial end of the crankshaft, which is close to the motor relative to the bracket, one end of the eccentric sleeve is sleeved on an axial end portion of the crankshaft, which is located in the medium pressure chamber, the other end of the eccentric sleeve is capable of driving the movable plate, the third bearing is supported between the eccentric sleeve and the movable plate, and the third bearing is communicated with the medium pressure chamber; the static disc with pump body compression chamber has between the movable disk, the accuse has still been seted up on the movable disk and has been pressed the passageway, the accuse press the passageway one end with pump body compression chamber intercommunication, the other end with middling pressure chamber intercommunication, in order to right middling pressure chamber accuse pressure.

The utility model also provides a compressor, it includes preceding arbitrary the oil return structure of compressor.

The utility model also provides an air conditioner, it includes aforementioned compressor.

The utility model provides a pair of oil return structure, compressor and air conditioner of compressor have following beneficial effect:

1. the oil return structure of the compressor of the utility model forms a cavity for exhausting and/or distributing oil by the first bulge convexly formed on the end surface of the static disc towards the direction of the cover body and/or the second bulge convexly arranged on the cover body towards the direction of the static disc, the first bulge is matched with the cover body or the second bulge is matched with the static disc or the first bulge is matched with the second bulge so as to form a cavity for exhausting and/or distributing oil on the inner periphery of the bulge, and an oil storage cavity is formed on the inner periphery of the cover body and the periphery of the bulge, so that the oil storage cavity can receive the oil separated from the cavity for exhausting and/or distributing oil and store the oil in the oil storage cavity, therefore, the oil return structure effectively utilizes the part of space by the effective design on the static disc and the cover body, so that the oil storage cavity is effectively opened on the basis of not increasing the axial and radial dimensions of the compressor, and the accommodating space of the oil storage cavity is larger, the oil storage structure can store a large amount of oil, the cavity has large volume, the size of the upper cover does not need to be additionally increased particularly, the separated lubricating oil is effectively prevented from being taken away by a refrigerant, and the weight and the size of the compressor cannot be increased while the oil storage volume of the lubricating oil in the compressor is increased;

2. the utility model discloses still can be to the oil that separates from the exhaust chamber and/or branch oil chamber through a plurality of oil return passageways that set up earlier through throttle decompression, reentry the oil storage intracavity portion at last for the pressure in the oil storage intracavity portion is in the intermediate pressure between breathing in and the exhaust, thereby can make the high-pressure lubricating oil that the exhaust separated get back to in this oil storage intracavity in time because of the effect of pressure differential, make the liquid level in the oil storage intracavity not receive the influence of branch oil chamber height and reduce the oil reserve, thereby effectively improve the oil reserve; the utility model discloses still can lead to the middling pressure chamber after throttling and reducing the pressure to the middling pressure oil in the oil storage chamber through the setting of a plurality of steady voltage passageways to effectively guarantee the continuous effective supply of the oil in the middling pressure chamber, just the utility model discloses a middling pressure chamber can be because the influence of moving parts such as bent axle, eccentric sleeve and driving disk, and the lubricating oil volume of its inside storage can be unstable, therefore for setting up the middling pressure chamber as the structure of oil storage chamber among the prior art, the utility model discloses an oil storage chamber can not change because of being located the space that quiet dish and lid formed, and its space can not change, can not lead to the limited condition of oil storage volume to take place, can guarantee the oil supply that lasts; the utility model discloses still through the setting of a plurality of oil channels, can effectively carry out the throttle decompression to the oil of oil storage intracavity, and then make to derive to the low pressure chamber of breathing in or the pump body through the oil channel and inhale the oil in the chamber and reduced to the low pressure state effectively, effectively guaranteed the cooling to parts such as motor and to move the effective lubrication action between the quiet dish, improve the supply performance of lubricating oil.

Drawings

FIG. 1 is an internal cross-sectional view of a prior art scroll compressor 1;

FIG. 2 is an internal cross-sectional view of the scroll compressor of background art 2;

FIG. 3 is an internal cross-sectional view of the scroll compressor of the present invention;

FIG. 4 is an exploded view of the inner stationary plate, wear plate and support of the scroll compressor of the present invention;

FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3;

FIG. 6 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 7 is a cross-sectional view taken along line C-C of FIG. 3;

FIG. 8 is a cross-sectional view taken along line A-A of a scroll compressor according to another embodiment of the present invention;

FIG. 9 is a cross-sectional view taken along line C-C of the scroll compressor of the same embodiment as FIG. 8;

fig. 10 is an enlarged partial sectional view at the third oil discharge passage in fig. 3;

fig. 11 is a perspective view and a cross-sectional view of the choke member of fig. 10.

The reference numbers are given as:

100. an oil storage chamber; 1. a cover body; 110. a second protrusion; 1a1, cover body oil storage cavity; 1a2, oil distribution cavity; 1a3, an exhaust oil separating cavity; 2. a stationary disc; 21. a first protrusion; 2a1, static disc oil storage cavity; 2a2, exhaust chamber; 2a3, pump body compression cavity; 2a4, pump body suction cavity; 2b1, a first surge path; 2b2, a first oil outlet channel; 2b3, a first oil return passage; 2b4, a third oil return passage; 2b5, a third oil outlet channel; 2c1, a voltage stabilizing buffer cavity; 2c2, an oil outlet and oil collecting cavity; 2c3 and an oil return and collection cavity; 2c4, an oil return buffer cavity; 2d1, a first stabilizer bar; 2d2, exhaust cavity outer wall; 3. a movable disc; 3b1, pressure control channel; 4. a support; 4a1, medium pressure chamber; 4b1, third surge path; 5. a housing; 5a1, low pressure suction chamber; 6. a motor; 7. a first bearing; 8. a crankshaft; 8a1, a fourth oil outlet channel; 9. a second bearing; 10. an eccentric sleeve; 11. a third bearing; 12. an exhaust oil separating member; 13. a wear resistant sheet; 13b1, a second regulated flow path; 13b2, a second oil outlet channel; 13b3, a second oil return passage; 14. sealing gaskets; 14b1, pressure stabilizing buffer holes; 14b2, oil outlet passage port; 14b3, return oil buffer hole; 14c1, pressure stabilizing buffer cover; 14c3, oil return buffer cover; 16. a throttling member; 16b1, external oil outlet channel; 16b2, internal oil outlet channel.

Detailed Description

To make the purpose, technical solution and advantages of the present invention clearer, the following description will be given with reference to the embodiments of the present invention and the accompanying drawings, in which the technical solution of the present invention is clearly and completely described. It is to be understood that the disclosed embodiments are merely exemplary of the invention, and are not intended to limit the invention to the precise embodiments disclosed. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

As shown in fig. 1, the compressor structure in the prior art mainly includes an upper cover, a stationary plate, a movable plate and a driving support structure of the compressor, an exhaust cavity, an oil distribution cavity and an oil storage cavity are formed between the stationary plate and the upper cover of the compressor, the oil storage cavity is relatively arranged below the oil distribution cavity, and the highest oil storage level in the oil storage cavity corresponds to the oil outlet at the bottom of the oil distribution cavity. The structural position of the exhaust cavity, the oil distribution cavity and the oil storage cavity in the prior art is arranged on the upper cover, so that the size of the compressor is large, the weight of the compressor is heavy, and the axial oil distribution length of the oil distribution cavity is limited, so that the actual oil distribution efficiency is reduced. Meanwhile, the oil storage cavity is directly communicated with the exhaust cavity through the oil distribution cavity, the middle of the oil storage cavity is not provided with a throttling and pressure reducing structure, the pressure in the oil storage cavity fluctuates along with the exhaust, and the pressure fluctuation between the oil storage cavity and the oil distribution cavity is large, so that the lubricating oil separated from the oil distribution cavity is difficult to enter the oil storage cavity in time and then is taken away through the exhaust, and the oil storage and oil distribution effects are influenced.

As shown in fig. 2, the compressor of the prior art has a housing, a bracket, a moving plate, a stationary plate, an upper cover, and a driving member. The lubricating oil separated by the upper cover exhaust oil separating structure is returned to the cavity in the support through the oil return channels arranged in the upper cover, the static disc and the support of the compressor. Two bearings in the lubricating cavity. Because this support cavity is the motion piece holding member, and the cavity space sets up limitedly, and has motion part eccentric bushing and driving disk, has influenced the oil storage capacity of cavity, leads to the lubricating oil of separating to be can not be stored in the compressor completely, and unnecessary lubricating oil still can be taken away by the exhaust and get into the system, influences the system heat transfer.

The utility model discloses it is shown in combination with fig. 3-11, the curve explains:

1. solid arrow curve: an oil lubricated motion path; 2. dashed arrow curve: refrigerant moving path

An embodiment of the utility model provides an oil return structure of compressor (preferred scroll compressor's oil return structure), it includes:

the cover comprises a static disc 2 and a cover body 1, wherein a first bulge 21 which protrudes towards the cover body 1 is arranged on the end surface of the static disc 2 which faces towards the cover body 1, and/or a second bulge 110 which protrudes towards the static disc 2 is arranged on the end surface of the cover body 1 which faces towards the static disc 2;

when only the first bulge 21 is included, the first bulge 21 is connected with the cover body 1 to form a cavity for exhausting and/or distributing oil on the inner periphery of the first bulge 21, and the inner periphery of the cover body 1 and the outer periphery of the first bulge 21 form an oil storage cavity 100 capable of storing oil together;

when only the second protrusion 110 is included, the second protrusion 110 is connected with the static disc 2 to form a cavity for exhausting and/or distributing oil on the inner periphery of the second protrusion 110, and the inner periphery of the cover body 1 and the outer periphery of the second protrusion 110 together form an oil storage cavity 100 capable of storing oil;

when the first bulge 21 and the second bulge 110 are included at the same time, the first bulge 21 is connected with the second bulge 110 to form a cavity for exhausting and/or distributing oil between the first bulge and the second bulge (the connected inner peripheries of the first bulge and the second bulge), and the inner peripheral surface of the cover body 1, the first bulge 21 and the second bulge 110 jointly form an oil storage cavity 100 capable of storing oil;

the reservoir chamber 100 is located radially outside the vented and/or oil-dividing cavity.

The oil return structure of the compressor of the utility model forms a cavity for exhausting and/or distributing oil on the inner periphery of the bulge by the first bulge formed by the bulge on the end surface of the static disc towards the direction of the cover body and/or the second bulge convexly arranged on the cover body towards the direction of the static disc, the first bulge is matched with the cover body or the second bulge is matched with the static disc or the first bulge is matched with the second bulge so as to form a cavity for exhausting and/or distributing oil on the inner periphery of the bulge, and an oil storage cavity is formed on the inner periphery of the cover body and the periphery of the bulge, so that the oil storage cavity can receive the oil separated from the cavity for exhausting and/or distributing oil and store the oil in the oil storage cavity, therefore, the utility model effectively utilizes the partial space through the effective design on the static disc and the cover body, on the basis of not increasing the axial and radial dimensions of the compressor, the oil storage cavity is effectively opened, and the accommodating space of the oil storage cavity is larger, make and to store a large amount of oil in the oil storage structure, the cavity volume is big and especially need not additionally increase upper cover size to the condition that the lubricating oil that effectively prevents to separate was taken away by the refrigerant still can not increase compressor weight and size when increasing the oil storage volume of lubricating oil in the compressor.

The utility model discloses a lean on the periphery to form the ring shape oil storage cavity that has a take the altitude between quiet dish and upper cover, the cavity volume is big and need not additionally increase the upper cover size. Moreover, more importantly, the pressure in the cavity is the intermediate pressure between air suction and air exhaust, high-pressure lubricating oil discharged by air exhaust and oil separation can return to the cavity in time, and the liquid level in the cavity is not influenced by the height of the oil separation cavity. And lubricating oil in the oil storage cavity flows back to the low-pressure air suction cavity in the compressor through the throttling passage, so that the storage and oil return of the lubricating oil in the cavity are realized.

The following technical problems can be solved:

1. increasing the oil storage volume of the lubricating oil in the compressor without increasing the weight and size of the compressor;

2. and an oil return path of the lubricating oil in the compressor is increased, so that the lubricating of the lubricating oil in the compressor is accelerated.

The utility model provides a scroll compressor oil return oil storage structure sets up in the compressor, and the lubricating oil after will exhausting the separation is stored in the oil storage intracavity, and inside oil storage chamber passed through oil return path intercommunication compressor simultaneously, with the lubricating oil backward flow to compressor low-pressure portion, realize the storage and the oil return of lubricating oil.

1: the utility model provides an inside oil storage structure of compressor which characterized in that: the oil storage structure is provided with an oil storage cavity, an oil inlet passage, a pressure guide passage and an oil discharge passage. The oil inlet passage is communicated with the oil storage cavity and the high-pressure exhaust oil distribution cavity, the pressure stabilizing passage is communicated with the oil storage cavity and the first medium-pressure cavity, and the oil discharge passage is communicated with the oil storage cavity and the second low-pressure cavity. The oil inlet passage and the oil discharge passage at least respectively comprise one passage, and multiple passages can be arranged to accelerate oil return or oil inlet.

2: a first cavity and a second cavity are formed between the upper cover and the static disc of the compressor, the first cavity is an exhaust high-pressure cavity, the second cavity is an oil storage cavity, the first cavity is arranged in the middle, the second cavity is arranged on the periphery, and the second cavity can be wrapped around the first cavity to form the largest oil storage space on the periphery of the first cavity. The oil storage cavity is arranged between the static disc and the upper cover and between the static disc and the upper cover.

3: in above-mentioned oil storage cavity, in the intercommunication interval of oil feed passageway and pressure induction passageway, be provided with buffer structure. The speed of gas entering the oil storage cavity from the oil inlet channel or the pressure guide channel is buffered, and the pressure fluctuation of the oil storage cavity is reduced.

4: the oil inlet passage is provided with a first throttling structure, the first throttling structure can throttle exhaust high pressure to first medium pressure cavity pressure or is slightly higher than the first medium pressure cavity pressure, the oil discharge passage is provided with a second throttling structure, and the second throttling structure can throttle and reduce pressure of the oil storage cavity to suction low pressure or is slightly higher than the suction low pressure. The first throttling structure and the second throttling structure prevent a large amount of discharged high-pressure refrigerant from leaking to the first medium-pressure cavity or the second low-pressure cavity, and the performance of the compressor is affected.

5: the first intermediate pressure chamber is communicated with the middle compression chamber of the movable and fixed scroll, and the pressure in the middle compression chamber changes periodically, but a certain stable average pressure can be maintained, and the pressure is between the high exhaust pressure and the low suction pressure.

Fig. 3 is the utility model relates to a scroll compressor, it includes parts such as lid 1, quiet dish 2, driving disk 3, support 4, casing 5, motor 6, first bearing 7, bent axle 8 (driving spindle), second bearing 9, eccentric cover 10, third bearing 11, exhaust branch oil spare 12. The compressor drive and compression unit is arranged between the cover 1 and the housing 5, and in addition, for the explanation of the compressor structure of the present invention, the compressor inner space of the figure is constituted by the cover 1 and the housing 5, but the oil return structure feature of the present invention can be used for compressors having more than 1 housings or upper covers, regardless of the compressor housing structure. The compression unit consists of a static disc 2 and a movable disc 3, and the driving unit consists of a motor 6, a crankshaft 8 and three bearings. The compression unit is driven by the driving unit to compress and discharge the refrigerant. Meanwhile, the compressor also comprises a pump body supporting unit, an oil-gas separation unit and an oil storage cavity unit. The pump body supporting unit comprises a support 4, an eccentric sleeve 10 and the like, the oil-gas separation unit comprises a cover body 1, an exhaust oil distribution part 12 and the like, and the oil storage cavity unit comprises a cavity formed among all parts in a compressor and the like and mainly comprises an oil storage cavity 100 formed by the periphery of the cover body and the periphery of a static disc. The circulation path of the lubricant oil with the refrigerant in the compressor is described as follows: the refrigerant and the lubricating oil in the low-pressure suction cavity 5a1 in the compression shell enter along with a suction port on the compressor, the pump body suction cavity 2a4 of the compression unit continuously sucks the refrigerant and the lubricating oil in the low-pressure suction cavity 5a1 under the driving of the driving unit, the refrigerant and the lubricating oil are compressed by the pump body compression cavity 2a3 to form a high-pressure high-temperature mixture, and the high-pressure high-temperature mixture enters the exhaust cavity 2a2 (also called a stationary disc exhaust cavity) and the oil distribution cavity 1a2 (also called an upper cover exhaust cavity) which are surrounded by the stationary disc and the inner periphery of the upper cover after the compression is finished. After the mixture in the exhaust chamber is centrifugally separated by the exhaust oil separator 12 in the upper cover, most of the lubricating oil enters the oil storage chamber 100 (including the cover oil storage chamber 1a1 and the static disc oil storage chamber 2a1) through the oil return passage (shown in fig. 4). The pressure in the oil storage chamber is an intermediate pressure between the suction pressure and the discharge pressure, and is obtained by communicating the medium pressure chamber of the stent inner chamber (medium pressure chamber 4a 1). And lubricating oil in the oil storage cavity flows back to the low-pressure air suction cavity of the compressor through the oil outlet channel. The circulation and storage of the lubricating oil inside the compressor are formed. Compared with the prior art, the most beneficial points of the characteristics are as follows: 1. the oil storage cavity fully utilizes the cavity structures of the upper cover and the periphery of the shell, the oil storage cavity meeting large oil storage capacity can be formed without reducing the length of the oil-gas separation cavity and increasing the height of the upper cover of the compressor, the separation efficiency of the exhaust oil separation structure is unchanged, and the size and the weight of the compressor are not increased; 2. meanwhile, the pressure in the oil storage cavity is intermediate pressure, so that the pressure of the oil storage cavity is lower than the exhaust pressure, the separated lubricating oil can be pressed into the oil storage cavity in time under the drive of differential pressure, the liquid level higher than the bottom outlet of the exhaust oil distributing piece 12 can be maintained, and the oil storage quantity is irrelevant to the outlet position of the oil distributing piece; 3. an oil return channel for throttling and reducing pressure is arranged between the oil storage cavity and the exhaust cavity, and the oil return channel can buffer pressure fluctuation in the exhaust cavity, so that the oil level in the oil storage cavity is more stable.

In some embodiments, the air discharging and/or oil distributing cavity includes an air discharging cavity 2a2 and an oil distributing cavity 1a2, the air discharging cavity 2a2 is located at the radial inner periphery of the first protrusion 21, the oil distributing cavity 1a2 is located at the radial inner periphery of the second protrusion 110, the oil storage cavity 100 can be communicated with the oil distributing cavity 1a2 to obtain separated lubricating oil from the oil distributing cavity 1a2, and/or the oil storage cavity 100 can be communicated with the air discharging cavity 2a2 to obtain lubricating oil from the air discharging cavity 2a 2. The utility model defines an exhaust cavity which can be communicated with the exhaust hole and an oil distribution cavity which is communicated with the exhaust cavity through the positions of the first bulge and the second bulge, the exhaust cavity is enclosed by the first bulge, the oil distribution cavity is enclosed by the second bulge, and the exhaust cavity can also distribute oil; the exhaust chamber and the oil distribution chamber jointly form an exhaust oil distribution chamber 1a 3.

In some embodiments, the reserve chamber 100 includes a static disc reserve chamber 2a1 and a cover reserve chamber 1a1, the static disc reserve chamber 2a1 is located at the radial periphery of the first boss 21, and the cover reserve chamber 1a1 is located at the radial periphery of the second boss 110. This is the utility model discloses an optimal structural style in oil storage chamber, including the quiet dish oil storage chamber that is located first protruding periphery and the lid oil storage chamber that is located the protruding periphery of second promptly, two oil storage chamber homoenergetic divide oil chamber intercommunication with the exhaust to obtain the oil of separation in the branch oil chamber from the exhaust.

The utility model discloses a utility model point 1 is explained in connection with fig. 3 and fig. 4: a compressor comprises a shell 5 and a cover body 1 (mainly formed into a closed cavity through a first bulge and a second bulge), wherein an oil storage cavity (comprising a cover body oil storage cavity 1a1 and a static disc oil storage cavity 2a1) is formed in the closed cavity, is formed in the structures of the cover body 1, the static disc 2 and (or the shell 5), and is provided with an oil return channel, an oil outlet channel and (or) a pressure stabilizing channel communicated with the oil storage cavity, and the pressure in the oil storage cavity is intermediate pressure (between suction pressure and exhaust pressure).

Utility model point 2: the oil storage cavity structure is a cavity formed at least on the periphery of the static disc and the periphery of the upper cover (the periphery is specifically relative to the exhaust cavity formed in the static disc and the upper cover), and the oil storage cavity structure can also be formed on the periphery of the static disc, the periphery of the upper cover and the cavity in the shell.

In some embodiments, the air conditioner further comprises a bracket 4, the bracket 4 has an intermediate pressure chamber 4a1 therein (where the intermediate pressure chamber is communicated with an intermediate pressure chamber of the compressor to form a back pressure chamber, the intermediate pressure chamber is a chamber for pressure between a low pressure chamber and a high pressure chamber of the compression chamber), the stationary disc 2 has a first pressure stabilizing channel 2b1 opened therein, the bracket 4 has a third pressure stabilizing channel 4b1 opened therein, one end of the first pressure stabilizing channel 2b1 can be communicated with the oil storage chamber 100, the other end thereof can be communicated with one end of the third pressure stabilizing channel 4b1, and the other end of the third pressure stabilizing channel 4b1 is communicated with the intermediate pressure chamber 4a 1. Preferably, the crankshaft 8 and the second bearing 9 are further included, the second bearing 9 is arranged in the middle pressure cavity 4a1, and one axial end of the crankshaft 8 penetrates into the middle pressure cavity 4a1 and is supported by the second bearing 9. The further preferred structure of the present invention is that the second bearing contained in the middle pressure chamber is used to effectively support the crankshaft, and the second bearing is usually lubricated and cooled by friction, so that the oil in the oil storage chamber can be effectively introduced into the middle pressure chamber through the first pressure stabilizing channel arranged in the stationary disc and the third pressure stabilizing channel arranged in the bracket, so as to effectively lubricate the second bearing, and the middle pressure oil in the oil storage chamber can be throttled and depressurized and then introduced into the middle pressure chamber through the arrangement of the multiple sections of pressure stabilizing channels, thereby effectively ensuring the continuous and effective supply of the oil in the middle pressure chamber, and the lubricating oil stored in the middle pressure chamber can be unstable due to the influence of the moving parts such as the crankshaft, the eccentric sleeve and the moving disc, and therefore, compared with the structure of setting the middle pressure chamber as the chamber in the prior art, the utility model discloses an oil storage chamber is owing to be located the space that quiet dish and lid formed, and its space can not change, can not lead to the limited condition of oil storage volume to take place, can guarantee the fuel feeding that lasts.

Utility model point 3: the pressure stabilizing channel is formed to connect the oil storage chamber and the middle pressure chamber 4a1 and comprises a first pressure stabilizing channel 2b1 which is arranged on the static disc and penetrates through the static disc, a third pressure stabilizing channel 4b1 which is communicated with the middle pressure chamber of the bracket and/or a second pressure stabilizing channel 13b1 which penetrates through the wear-resistant sheet, and the pressure stabilizing channel enables the pressure in the oil storage chamber and the pressure in the middle pressure chamber to be the same as an intermediate pressure. (Utility model: the pressure of the middle pressure cavity 4a1 is communicated with the pump body compression cavity 2a3 through the pressure control channel 3b1 arranged on the movable disc, the outlet on the pressure control channel compression cavity is arranged at the middle position of compression, namely the pressure in the compression cavity is the middle pressure between the suction pressure and the exhaust pressure at the moment.)

In some embodiments, the wear-resistant plate 13 is further included, the wear-resistant plate 13 is disposed between the static plate 2 and the bracket 4, a second pressure stabilizing channel 13b1 is disposed on the wear-resistant plate 13, and the second pressure stabilizing channel 13b1 is communicated between the first pressure stabilizing channel 2b1 and the third pressure stabilizing channel 4b 1; the third pressure stabilizing passage 4b1 is a communicating groove formed in the holder 4 and extending for a certain distance. The friction disc is in the optimal structure form of the utility model, and the friction disc can effectively prevent the large friction between the moving disc and the bracket through the arrangement of the wear-resisting plate, so that the friction power consumption is large; meanwhile, the oil between the first pressure stabilizing channel and the third pressure stabilizing channel can be effectively conducted through the second pressure stabilizing channel on the wear-resisting plate, so that the lubrication of the bearing is facilitated; and the third passageway is for extending the intercommunication groove of a section distance, can improve the throttle effect to lubricating oil, guarantees that oil is throttled and steps down when reaching the middling pressure chamber in the oil storage chamber, guarantees the continuous transport of oil.

In some embodiments, a first oil return channel 2b3 is provided on the static disc 2, one end of the first oil return channel 2b3 can be communicated with the exhaust and/or oil-separating cavity, and the other end is communicated with the oil storage cavity 100,

the wear plate 13 is provided with a second oil return passage 13b3, one end (not limited to an end position, or a position close to the end with respect to the other end) of the second oil return passage 13b3 is communicable with the first oil return passage 2b3, the second oil return passage 13b3 is a groove formed in an end surface of the wear plate 13 facing the stationary disc 2 and extending for a certain distance, the stationary disc 2 is further provided with a third oil return passage 2b4 penetrating both axial end surfaces thereof, one end of the third oil return passage 2b4 is communicable with the other end of the second oil return passage 13b3 (not limited to the end position, or a position close to the other end with respect to the one end), and the other end of the third oil return passage 2b4 is communicable with the oil storage chamber 100.

The preferable structure of the utility model is that through the first oil return channel and the third oil return channel on the static disc, and a second oil return channel on the wear-resisting plate, so that the oil can flow into the second oil return channel through the first oil return channel and then into the oil storage cavity through the third oil return channel, so that the lubricating oil in the exhaust oil-dividing cavity passes through the longer throttling channel and then enters the oil storage cavity, the oil separated from the exhaust cavity and/or the oil distribution cavity can be throttled and depressurized through the plurality of oil return channels, and finally enters the oil storage cavity, so that the pressure in the oil storage cavity is in the middle pressure between air suction and air exhaust, so that the high-pressure lubricating oil separated from the exhaust gas can be returned to the oil storage chamber in time under the action of the pressure difference, the liquid level in the oil storage cavity is not affected by the height of the oil distribution cavity, so that the oil storage capacity is reduced, and the oil storage capacity is effectively improved.

Utility model point 4: the oil return channel is formed to communicate the oil storage chamber and the exhaust oil distribution chamber (1a 3 in fig. 5), and comprises a first oil return channel 2b3 arranged in the static disc, a second oil return channel 13b3 arranged on the bracket or the static disc or the wear-resistant plate (for example, for a compressor structure without the wear-resistant plate 13, the second oil return channel can also be arranged on the static disc or the bracket in the area), and a third oil return channel 2b4 penetrating through the static disc, and at least one of the first oil return channel, the second oil return channel and the third oil return channel has a significant pressure reduction effect, so that after refrigerant passes through the channels, the pressure is reduced to an intermediate pressure which is not lower than the pressure of the oil storage chamber through the exhaust pressure throttling. (the utility model discloses another implementation characteristics can be for above-mentioned oil return passageway sets up between quiet dish 2 and gasket 14 (figure 6), be provided with tiny throttle passage on either quiet dish or gasket seal both, this passageway intercommunication exhaust divides oil pocket and oil storage chamber; in addition, to this kind of characteristics, also can directly cover on quiet dish or upper cover, can communicate oil storage chamber and exhaust branch oil pocket, and have to high-pressure refrigerant throttle decompression to the throttle structure of intermediate pressure

In order to obtain larger oil return flow, the oil return flow can be obtained by increasing the aperture size of a single oil return channel, but the pressure in the oil storage cavity is designed to be increased, and a large amount of high-pressure gas enters the oil storage cavity to influence the pressure of the medium-pressure cavity, so that the power consumption of the compressor is increased. The existing structure has the contradiction of oil return and throttling. Another alternative embodiment of the utility model provides a structure of many oil return throttle channels.

Utility model point 9: the oil storage chamber and the air exhaust oil distribution chamber are communicated with each other, and a plurality of oil return channels are formed in the oil storage chamber and the air exhaust oil distribution chamber, and two oil return channels are formed in the oil storage chamber and the air exhaust oil distribution chamber as shown in fig. 8. Such oil return passages have the same first oil return passage 2b3 connecting the exhaust oil distribution chambers. The outlet of the first oil return channel is respectively connected with two left and right second oil return channels 13b3. with the same throttling function, and two oil return buffer cavities 14b3 are correspondingly arranged in the oil storage cavity. (so set up, can obtain the volume of returning oil that is twice more than prior art, and does not change the pressure drop of returning oil.)

In some embodiments, the wear-resistant plate 13 is a circular cylinder structure, the center of which has a central hole, and the second oil return passage 13b3 is an arc-shaped groove structure that is formed by rotating around the center of the central hole as the rotation center. This is the utility model discloses a second oil return passage's preferred structural style, through the structural style of one section arc wall, can produce effectual throttle effect in this section arc wall, throttle the step-down to oil, carried out the throttle when guaranteeing that the exhaust divides the oil pocket to reachs in the oil storage chamber and reduced the pressure, guaranteed the effectual transport that lasts of lubricating oil for the liquid level in the oil storage chamber does not receive the influence of dividing the oil pocket height and reduces the oil storage capacity.

In some embodiments, a sink structure is further disposed at a position where the first surge channel 2b1 communicates with the oil storage chamber 100, so as to form a surge damping chamber 2c 1; a sink groove structure is further formed at a position where the third oil return passage 2b4 is communicated with the oil storage chamber 100, so that an oil return buffer chamber 2c4 is formed. The structure is further optimized, a pressure stabilizing buffer cavity is arranged at the connecting position of the end face of the static disc and the first pressure stabilizing channel, so that lubricating oil can enter the cavity to perform the pressure stabilizing buffer function, and the oil flowing out of the pressure stabilizing buffer cavity to the first pressure stabilizing channel can not generate larger fluctuation; an oil return buffer cavity is formed in the position, connected with the third oil return channel, of the end face of the static disc, so that lubricating oil can play a role in stabilizing pressure and buffering when entering the oil storage cavity, and the fact that oil flowing out of the third oil return channel to the oil storage cavity cannot generate large fluctuation is guaranteed.

In some embodiments, the sealing gasket 14 is disposed between the cover 1 and the stationary disc 2, the sealing gasket 14 is disposed with a pressure stabilizing buffering cover 14c1 at a position opposite to the pressure stabilizing buffering cavity 2c1, and at least one pressure stabilizing buffering hole 14b1 is opened on the pressure stabilizing buffering cover 14c 1; the sealing gasket 14 is provided with an oil return buffer cover 14c3 at a position opposite to the oil return buffer cavity 2c4, and the oil return buffer cover 14c3 is provided with at least one oil return buffer hole 14b 3. The utility model can effectively ensure the sealing effect of the connecting position of the cover body and the static disc through the arrangement of the sealing gasket, and can further play the effect of throttling and reducing pressure of oil through the pressure-stabilizing buffering cover and the pressure-stabilizing buffering hole, and improve the pressure-stabilizing effect; the oil return buffering cover and the oil return buffering hole can further play a role in throttling and reducing pressure of oil, and the pressure stabilizing effect is improved.

Utility model point 7: an oil return buffer cavity is formed at an outlet of the oil return channel in the oil storage cavity, and the oil return buffer cavity passes through an oil return buffer cavity 2c4 (figure 4) which is arranged on the static disc and an oil return buffer cover 14c3 which is correspondingly formed on the sealing sheet 14, and an oil return buffer hole 14b3 which is already arranged on the oil return buffer cover 14c 3. (in order to further buffer the flow velocity of the fluid in the oil return channel when entering the oil storage cavity, reduce the fluctuation, and simultaneously play a role in the influence of the pressure fluctuation in the oil storage cavity on the oil return of the oil return channel, and realize stable oil return and stable oil storage).

Utility model point 8: the oil storage cavity is internally provided with a pressure stabilizing buffer cavity at the outlet of the pressure stabilizing channel, and the pressure stabilizing buffer cavity is correspondingly formed on the sealing sheet 14 through a sinking pressure stabilizing buffer cavity 2c1 arranged on the static disc and a pressure stabilizing buffer cover 14c1 arranged on the sealing sheet 14 and a plurality of pressure stabilizing buffer holes arranged on the cover. (in order to further buffer the flow velocity of the fluid in the pressure stabilizing channel when entering the oil storage cavity, reduce fluctuation, and simultaneously play a role in the influence of pressure fluctuation in the oil storage cavity on the middle pressure cavity, and realize stable oil return, stable oil storage and stable middle pressure).

The same effect can be achieved if buffer chambers, as shown with the new type of

dots

7 and 8, are also provided on the sealing gasket, with corresponding formation of the recess. Or other sheet metal part structures externally connected with the volume expansion cavity. The illustration is a simpler structure to implement.

In some embodiments, the cross section of the first protrusion 21 is a ring-shaped structure, and the inner circumferential wall of the first protrusion 21 is formed as the exhaust cavity outer wall 2d 2; a first pressure stabilizing baffle 2d1 is arranged on the outer peripheral wall of the first protrusion 21, one end of the first pressure stabilizing baffle 2d1 is connected with the outer peripheral wall of the first protrusion 21, the other end of the first pressure stabilizing baffle extends towards the radial outer peripheral wall of the static disc 2 and is spaced from the radial outer peripheral wall of the static disc 2 by a third preset distance, and the first pressure stabilizing baffle 2d1 is positioned on a fluid flow path between the oil return buffer cavity 2c4 and the pressure stabilizing buffer cavity 2c 1; and/or, be provided with second steady voltage baffle 1d1 on the internal perisporium of lid 1, the one end of second steady voltage baffle 1d1 with the internal perisporium of lid 1 meets, the other end towards the radial periphery wall of first arch 21 extends and with the radial periphery wall interval fourth preset distance of first arch 21, and second steady voltage baffle 1d1 is located the fluid flow path between oil return cushion chamber 2c4 and steady voltage cushion chamber 2c 1. The utility model discloses still can carry out effectual the blockking to the route of oil stream to steady voltage cushion chamber in the oil storage chamber that the oil return cushion chamber flows into through the setting of first steady voltage baffle and/or second steady voltage baffle, nevertheless do not block completely to effectively reduce the speed that oil flows, realize the further steady voltage effect to oil.

Utility model point 6: a buffer channel is arranged in the direction of gas flow in the oil storage cavity, and the buffer channel forms a fluid baffling channel in the oil storage cavity through baffle structures (shown in figure 7) arranged on the static disc and/or the upper cover. (the buffer passage is generally provided between the oil return passage and the surge tank to buffer the refrigerant entering from the oil return passage and also to buffer the flow of the refrigerant entering from the surge tank so that the pressure fluctuation in the oil storage chamber is small and a more stable pressure is maintained, and also to buffer the influence of the pressure in the oil storage chamber on the pressure in the middle pressure chamber; further, it is desirable that the lubricating oil is stored in the oil storage chamber without or with little entry into the middle pressure chamber, and the lubricating oil can also have a partial oil-distributing effect when flowing in the buffer passage. as shown in FIG. 7, the solid line arrow curve is a lubricating oil moving path, and when passing through such a surge tank structure, the lubricating oil is more difficult to pass through such a baffle passage to be stored halfway, and drips on the surge tank or the oil storage chamber wall to be effectively stored) the buffer passage shown in FIG. 7 has a first surge tank 2d1 formed on the stationary disk, a second pressure stabilizing baffle 1d1 formed on the upper cover, the two pressure stabilizing baffles forming an inner fluid passage and an outer fluid passage in axial projection, or forming an upper fluid passage and a lower fluid passage, the inner fluid passage and the outer fluid passage (inner means being close to the exhaust cavity is inner) are shown.

In some embodiments, the first pressure stabilizing baffles 2d1 are at least two and are arranged at different positions on the peripheral wall of the first protrusion 21; at least two second pressure-stabilizing baffles 1d1 are provided at different positions on the inner peripheral wall of the cover 1. The utility model discloses a first and second steady voltage baffle are preferred to be set up to at least two, especially as shown in fig. 6-7, respectively set up one on both sides about, can all play effectual steady voltage deceleration's effect to the oil that gets into in the steady voltage passageway on both sides.

In some embodiments, when the cavity for exhausting and/or distributing the air includes an exhaust cavity 2a2, an oil return and collection cavity 2c3 is further disposed on the first protrusion 21, the oil return and collection cavity 2c3 can communicate with the exhaust cavity 2a2, the first oil return channel 2b3 is opened inside the stationary disc 2, one end of the first oil return channel 2b3 can communicate with the oil return and collection cavity 2c3, and the other end penetrates through an end surface of the stationary disc 2 facing the wear-resistant plate 13. The utility model discloses still through the oil return oil collecting chamber of seting up on first arch, can store and the steady voltage effect from the oil of exhausting branch oil chamber collection, then the inside first time oil passageway of seting up of quiet dish of rethread flows oil to for example in the second oil return passageway on the wear pad to the effect of the throttle step-down of carrying out the oil return.

In some embodiments, the fixed disc 2 is further provided with a first oil outlet channel 2b2, and one end of the first oil outlet channel 2b2 is communicated with the oil storage chamber 100;

the oil return structure of compressor still includes casing 5 and driving disk 3, the axial one end of casing 5 with lid 1 meets, just quiet dish 2 with driving disk 3 all set up in the inside of casing 5, the chamber 5a1 is inhaled to the low pressure that still has in the casing 5, quiet dish 2 with form the pump body between the driving disk 3 and inhale chamber 2a4, first oil outlet passageway 2b2 can respectively with the low pressure inhale chamber 5a1 with the pump body is inhaled chamber 2a4 and is communicated.

The utility model discloses a first oil outlet channel of seting up on the quiet dish can be effectively with the oil conductance in the oil storage chamber to the low pressure in the casing inhale the chamber and/or quiet dish and the driving disk between the pump body inhale the chamber, realize the lubrication to motor isotructure to and carry out effective lubrication action between the quiet dish of moving.

Utility model point 5: the oil outlet channel is formed to communicate the oil storage chamber with the low pressure suction chamber 5a1 (or the pump body suction chamber 2a4), and the oil outlet channel at least includes a first oil outlet channel 2b2 penetrating through the static disc and at least includes a second oil outlet channel with throttling and pressure reducing effects, as shown in fig. 4 and 5, the preferable scheme is as follows: the second oil outlet channel 13b2 is arranged on the wear-resisting plate 13 and connected with the outlet of the second oil outlet channel, the channel has the function of throttling and pressure reduction, the other end of the second oil outlet channel is connected with a third oil outlet channel 2b5 on the static disc, and the third oil outlet channel is communicated with a low-pressure air suction cavity 2a4 in the static disc. Therefore, the lubricating oil in the oil storage pool is circulated into the compressor again, and the solid arrow curve shown in fig. 4 is a circulation path of the lubricating oil.

It is noted that the oil return channel 13b3 and the oil outlet channel 13b2 formed on the wear-resistant plate as described above are both structures with obvious throttling and pressure reduction, the height of the channel is an elongated channel with the thickness of the wear-resistant plate being at least larger than 0.1mm, the width of the channel is at least larger than 0.1mm, the inside of the channel allows the fluid to pass through, and the periphery of the channel forms a seal.

In some embodiments, the wear-resistant plate 13 is provided with a second oil outlet channel 13b2, and the other end of the first oil outlet channel 2b2 can communicate with one end of the second oil outlet channel 13b2 (not limited to being located at the end, but also can be located close to the end relative to the other end of the second oil outlet channel); the second oil outlet passage 13b2 is a groove that is formed on the end surface of the wear plate 13 facing the stationary disc 2 and extends for a certain distance, the end surface of the stationary disc 2 facing the wear plate 13 is formed with a third oil outlet passage 2b5, one end of the third oil outlet passage 2b5 can communicate with the other end of the second oil outlet passage 13b2 (not limited to being located at the end, but may be located close to the other end with respect to the one end of the second oil outlet passage), and the other end can communicate with the pump body suction chamber 2a 4. The utility model discloses still through the second passageway that produces oil on the wear pad for the oil storage chamber carries out effectual throttle decompression at the in-process that arrives low pressure suction chamber or the pump body suction chamber through a plurality of passageways that produce oil, makes and derives to the oil in low pressure suction chamber or the pump body suction chamber through the passageway that produces oil and is reduced to the low pressure state effectively, has effectively guaranteed the cooling to parts such as motor and to the effective lubrication action between the quiet dish of moving, improves the supply performance of lubricating oil.

In some embodiments, the wear-resistant plate 13 is a circular cylinder structure, the center of which has a central hole, and the second oil outlet channel 13b2 is an arc-shaped groove structure that is formed by rotating around the center of the central hole as the rotation center; a sink structure is further formed at a position where the first oil outlet channel 2b2 is communicated with the oil storage cavity 100, so that an oil outlet and collection cavity 2c2 is formed. The second oil outlet channel is preferably structured, and the arc-shaped groove structure can play a role in effective throttling and pressure reduction, so that the pressure reduction effect between the oil storage cavity and the pump body air suction cavity is ensured, and continuous and effective oil supply is realized; the oil outlet position can be subjected to oil collection, buffering and pressure stabilization through the oil outlet and oil collecting cavity.

In some embodiments, on the axial end surface of the stationary disc 2 forming the oil storage chamber 100, the oil return buffer chamber 2c4 is separated from the surge buffer chamber 2c1 by a first preset distance, and the oil return buffer chamber 2c4 is separated from the oil outlet and oil collection chamber 2c2 by a second preset distance, so that part of the oil entering the oil storage chamber 100 through the oil return buffer chamber 2c4 enters the surge buffer chamber 2c1 and part of the oil enters the oil outlet and oil collection chamber 2c 2. This is the utility model discloses an optimal configuration form, the oil in oil storage chamber comes from the oil return cushion chamber, and the export direction can get into the middling pressure chamber through the surge cushion chamber, also can flow to the chamber of breathing in through the oily oil collecting chamber that produces, consequently sets up the oil return cushion chamber between surge cushion chamber and the oily oil collecting chamber that produces, can effectively guarantee the fuel feeding to the middling pressure chamber and the fuel feeding to the air suction chamber.

In some embodiments, a throttle member 16 is disposed in the third oil outlet channel 2b5, the throttle member 16 is a cylindrical structure, an outer oil outlet channel 16b1 is disposed on an outer peripheral wall of the throttle member 16, and an inner oil outlet channel 16b2 is disposed inside the throttle member 16, so that fluid can flow from one end to the other end of the throttle member 16 through the outer oil outlet channel 16b1 and/or the inner oil outlet channel 16b 2. The utility model discloses a throttle part that sets up in the third oil outlet channel can further increase the effect to the throttle step-down of the oil in this passageway.

As shown in fig. 10, it is another feature of the present invention to provide a throttling and pressure reducing structure. Fig. 10 illustrates the present feature by taking a throttling structure on the oil outlet passage as an example. A cylindrical throttle member 16 is provided in an oil return or outlet passage, and has a spiral outer oil outlet passage 16b1 on the outer periphery thereof, and an inner oil outlet passage 16b2 inside the throttle member having a non-solid structure. The fluid can flow through either the outer oil outlet passage or the inner oil outlet passage with the same pressure drop. (the throttling structure has the advantages that throttling channels with the same pressure reduction effect can be obtained on a shorter oil return path, and the requirement on the size of the structure is small.)

In some embodiments, the oil return structure of the compressor further includes a first bearing 7, a third bearing 11 and an eccentric sleeve 10, the compressor includes a motor, the first bearing 7 is disposed at an axial end of the crankshaft 8, which is close to the motor with respect to the bracket 4, one end of the eccentric sleeve 10 is sleeved on an axial end portion of the crankshaft 8, which is located in the intermediate pressure chamber 4a1, the other end is capable of being used for driving the movable plate 3, the third bearing 11 is supported between the eccentric sleeve 10 and the movable plate 3, and the third bearing 11 is communicated with the intermediate pressure chamber 4a 1; a pump body compression cavity 2a3 is arranged between the static disc 2 and the movable disc 3, a pressure control channel 3b1 is further formed on the movable disc 3, one end of the pressure control channel 3b1 is communicated with the pump body compression cavity 2a3, and the other end of the pressure control channel is communicated with the medium pressure cavity 4a1 so as to control pressure of the medium pressure cavity 4a 1.

The utility model discloses a first bearing can support the motor end of bent axle, and the third bearing can support driving disk and eccentric cover, can provide oil lubrication to the third bearing through the middling pressure chamber, and the first bearing can be through seting up fourth oil outlet channel 8a1 in the bent axle inside, and the one end of fourth oil outlet channel can communicate with middling pressure chamber, and the other end can communicate to first bearing to lubricate first bearing; the pressure control channel 3b1 that sets up on the driving disk can draw out the pressure in the pump body compression chamber to the middling pressure chamber in to carry out effectual accuse pressure effect in the middling pressure chamber, guarantee its backpressure effect.

The utility model also provides a compressor (preferred scroll compressor), it includes any preceding oil return structure of compressor.

It is readily understood by a person skilled in the art that the advantageous ways described above can be freely combined, superimposed without conflict.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. An oil return structure of compressor which characterized in that: the method comprises the following steps:

the device comprises a static disc (2) and a cover body (1), wherein a first bulge (21) protruding towards the cover body (1) is arranged on the end face, facing the cover body (1), of the static disc (2), and/or a second bulge (110) protruding towards the static disc (2) is arranged on the end face, facing the static disc (2), of the cover body (1);

when only the first bulge (21) is included, the first bulge (21) is connected with the cover body (1) to form a cavity for exhausting and/or distributing oil on the inner periphery of the first bulge (21), and the inner periphery of the cover body (1) and the outer periphery of the first bulge (21) jointly form an oil storage cavity (100) capable of storing oil;

when only a second bulge (110) is included, the second bulge (110) is connected with the static disc (2) to form a cavity for exhausting and/or distributing oil on the inner periphery of the second bulge (110), and the inner periphery of the cover body (1) and the outer periphery of the second bulge (110) jointly form an oil storage cavity (100) capable of storing oil;

when a first bulge (21) and a second bulge (110) are included at the same time, the first bulge (21) is connected with the second bulge (110) to form a cavity for exhausting and/or distributing oil between the first bulge (21) and the second bulge (110), and the inner periphery of the cover body (1) and the first bulge (21) and the second bulge (110) form an oil storage cavity (100) capable of storing oil together;

the oil reservoir (100) is located radially outside the air discharge and/or oil distribution cavity.

2. The oil return structure of a compressor according to claim 1, wherein:

the cavity of exhaust and/or branch oil includes exhaust chamber (2a2) and branch oil pocket (1a2), exhaust chamber (2a2) is located the radial inner periphery of first arch (21), divide oil pocket (1a2) to be located the radial inner periphery of second arch (110), oil storage chamber (100) can with divide oil pocket (1a2) intercommunication in order to follow acquire the lubricating oil of separating in branch oil pocket (1a2), and/or oil storage chamber (100) can with exhaust chamber (2a2) intercommunication is in order to follow acquire lubricating oil in exhaust chamber (2a 2).

3. The oil return structure of a compressor according to claim 2, wherein:

oil storage chamber (100) includes quiet dish oil storage chamber (2a1) and lid oil storage chamber (1a1), quiet dish oil storage chamber (2a1) is located the radial periphery of first arch (21), lid oil storage chamber (1a1) is located the radial periphery of second arch (110).

4. The oil return structure of a compressor according to any one of claims 1 to 3, wherein:

still include support (4), support (4) inside middling pressure chamber (4a1) have, first steady voltage passageway (2b1) have been seted up to quiet dish (2) inside, third steady voltage passageway (4b1) have been seted up to the inside of support (4), the one end of first steady voltage passageway (2b1) can with oil storage chamber (100) intercommunication, the other end can with the one end intercommunication of third steady voltage passageway (4b1), the other end of third steady voltage passageway (4b1) with middling pressure chamber (4a1) intercommunication.

5. The oil return structure of a compressor according to claim 4, wherein:

the crankshaft (8) and a second bearing (9) are further included, the second bearing (9) is arranged in the medium-pressure cavity (4a1), and one axial end of the crankshaft (8) penetrates into the medium-pressure cavity (4a1) and is supported by the second bearing (9).

6. The oil return structure of a compressor according to claim 5, wherein:

the wear-resistant plate (13) is arranged between the static plate (2) and the bracket (4), a second pressure stabilizing channel (13b1) is arranged on the wear-resistant plate (13), and the second pressure stabilizing channel (13b1) is communicated between the first pressure stabilizing channel (2b1) and the third pressure stabilizing channel (4b 1); the third pressure stabilizing channel (4b1) is a communicating groove which is arranged in the bracket (4) and extends for a certain distance.

7. The oil return structure of a compressor according to claim 6, wherein:

a first oil return channel (2b3) is arranged on the static disc (2), one end of the first oil return channel (2b3) can be communicated with the cavity for exhausting and/or distributing oil, and the other end is communicated with the oil storage cavity (100),

be provided with second oil return passageway (13b3) on wear pad (13), the one end of second oil return passageway (13b3) can with first oil return passageway (2b3) intercommunication, second oil return passageway (13b3) are in wear pad (13) orientation the recess of one section distance of extension that sets up on the terminal surface of quiet dish (2), third oil return passageway (2b4) have still been seted up to running through its axial both ends ground on quiet dish (2), the one end of third oil return passageway (2b4) can with the other end intercommunication of second oil return passageway (13b3), the other end of third oil return passageway (2b4) with oil storage chamber (100) intercommunication.

8. The oil return structure of a compressor according to claim 7, wherein:

the wear-resistant plate (13) is of a circular cylinder structure, a central hole is formed in the center of the wear-resistant plate, and the second oil return channel (13b3) is of an arc-shaped groove structure formed by rotating by taking the circle center of the central hole as a rotation center.

9. The oil return structure of a compressor according to claim 7, wherein:

a sink groove structure is further formed at the position where the first pressure stabilizing channel (2b1) is communicated with the oil storage cavity (100) to form a pressure stabilizing buffer cavity (2c 1); and a sink groove structure is further formed at the position where the third oil return channel (2b4) is communicated with the oil storage cavity (100) to form an oil return buffer cavity (2c 4).

10. The oil return structure of a compressor according to claim 9, wherein:

the sealing device is characterized by further comprising a sealing gasket (14), wherein the sealing gasket (14) is arranged between the cover body (1) and the static disc (2), the sealing gasket (14) is provided with a pressure stabilizing buffer cover (14c1) at a position opposite to the pressure stabilizing buffer cavity (2c1), and at least one pressure stabilizing buffer hole (14b1) is formed in the pressure stabilizing buffer cover (14c 1); the sealing gasket (14) is provided with an oil return buffer cover (14c3) at a position opposite to the oil return buffer cavity (2c4), and the oil return buffer cover (14c3) is provided with at least one oil return buffer hole (14b 3).

11. The oil return structure of a compressor according to claim 9, wherein:

the cross section of the first bulge (21) is of an annular structure, and the inner peripheral wall of the first bulge (21) is formed into an exhaust cavity outer wall (2d 2); a first pressure stabilizing baffle (2d1) is arranged on the peripheral wall of the first bulge (21), one end of the first pressure stabilizing baffle (2d1) is connected with the peripheral wall of the first bulge (21), the other end of the first pressure stabilizing baffle extends towards the radial peripheral wall of the static disc (2) and is spaced from the radial peripheral wall of the static disc (2) by a third preset distance, and the first pressure stabilizing baffle (2d1) is positioned on a fluid flow path between the oil return buffer cavity (2c4) and the pressure stabilizing buffer cavity (2c 1); and/or, be provided with second steady voltage baffle (1d1) on the internal perisporium of lid (1), the one end of second steady voltage baffle (1d1) with the internal perisporium of lid (1) meets, the other end court the radial periphery wall of first arch (21) extend and with the radial periphery wall interval fourth of first arch (21) predetermines the distance, just second steady voltage baffle (1d1) are located oil return cushion chamber (2c4) with on the fluid flow path between steady voltage cushion chamber (2c 1).

12. The oil return structure of a compressor according to claim 11, wherein:

at least two first pressure-stabilizing baffles (2d1) provided at different positions on the outer peripheral wall of the first projection (21); the number of the second pressure-stabilizing baffles (1d1) is at least two, and the second pressure-stabilizing baffles are arranged at different positions on the inner peripheral wall of the cover body (1).

13. The oil return structure of a compressor according to claim 7, wherein:

when the cavity of exhaust and/or branch oil includes exhaust chamber (2a2), still be provided with oil return oil collecting chamber (2c3) on first arch (21), oil return oil collecting chamber (2c3) can with exhaust chamber (2a2) intercommunication, first oil return passageway 2b3 is seted up in the inside of quiet dish (2), the one end of first oil return passageway (2b3) can with oil return oil collecting chamber (2c3) intercommunication, the other end run through to the orientation of quiet dish (2) the terminal surface of wear pad (13).

14. The oil return structure of a compressor according to claim 9, wherein:

a first oil outlet channel (2b2) is further formed in the static disc (2), and one end of the first oil outlet channel (2b2) is communicated with the oil storage cavity (100);

the oil return structure of compressor still includes casing (5) and driving disk (3), the axial one end of casing (5) with lid (1) meets, just quiet dish (2) with driving disk (3) all set up in the inside of casing (5), still have low pressure chamber (5a1) of breathing in casing (5), quiet dish (2) with form the pump body between driving disk (3) and breathe in chamber (2a4), first oil channel (2b2) can respectively with low pressure chamber (5a1) of breathing in with the pump body chamber (2a4) intercommunication of breathing in.

15. The oil return structure of a compressor according to claim 14, wherein:

a second oil outlet channel (13b2) is arranged on the wear-resistant sheet (13), and the other end of the first oil outlet channel (2b2) can be communicated with one end of a second oil outlet channel (13b 2); the second oil outlet channel (13b2) is a groove which is formed in the end face, facing the static disc (2), of the wear-resistant plate (13) and extends for a certain distance, a third oil outlet channel (2b5) is formed in the end face, facing the wear-resistant plate (13), of the static disc (2), one end of the third oil outlet channel (2b5) can be communicated with the other end of the second oil outlet channel (13b2), and the other end of the third oil outlet channel can be communicated with the pump body air suction cavity (2a 4).

16. The oil return structure of a compressor according to claim 15, wherein:

the wear-resisting plate (13) is of a circular cylinder structure, the center of the wear-resisting plate is provided with a center hole, and the second oil outlet channel (13b2) is of an arc-shaped groove structure formed by rotating by taking the circle center of the center hole as a rotation center; a sink structure is further arranged at the position where the first oil outlet channel (2b2) is communicated with the oil storage cavity (100) to form an oil outlet and collection cavity (2c 2).

17. The oil return structure of a compressor according to claim 16, wherein:

the formation of quiet dish (2) on the axial terminal surface of oil storage chamber (100), oil return cushion chamber (2c4) with steady voltage cushion chamber (2c1) separate first preset distance, oil return cushion chamber (2c4) with go out oil collection chamber (2c2) and separate the second preset distance, so that pass through oil return cushion chamber (2c4) get into partial oil in oil storage chamber (100) gets into in steady voltage cushion chamber (2c1), partial oil gets into in going out oil collection chamber (2c 2).

18. The oil return structure of a compressor according to claim 15, wherein:

a throttling part (16) is arranged in the third oil outlet channel (2b5), the throttling part (16) is of a cylindrical structure, a spiral outer oil outlet channel (16b1) is arranged on the outer peripheral wall of the throttling part, and an inner oil outlet channel (16b2) is arranged inside the throttling part (16), so that fluid can flow from one end to the other end of the throttling part (16) through the outer oil outlet channel (16b1) and/or the inner oil outlet channel (16b 2).

19. The oil return structure of a compressor according to claim 14, wherein:

the oil return structure of the compressor further comprises a first bearing (7), a third bearing (11) and an eccentric sleeve (10), the compressor comprises a motor, the first bearing (7) is arranged at one axial end, close to the motor, of the crankshaft (8) relative to the bracket (4), one end of the eccentric sleeve (10) is sleeved at the axial end, located in the medium pressure cavity (4a1), of the crankshaft (8), the other end of the eccentric sleeve can be used for driving the movable disc (3), the third bearing (11) is supported between the eccentric sleeve (10) and the movable disc (3), and the third bearing (11) is communicated with the medium pressure cavity (4a 1); the static disc (2) with pump body compression chamber (2a3) have between dynamic disk (3), the accuse has still been seted up on dynamic disk (3) and has been pressed passageway (3b1), the one end of accuse pressure passageway (3b1) with pump body compression chamber (2a3) intercommunication, the other end with middling pressure chamber (4a1) intercommunication, in order to right middling pressure chamber (4a1) accuse pressure.

20. A compressor, characterized by: an oil return structure including the compressor of any one of claims 1 to 19.

21. An air conditioner, characterized in that: comprising the compressor of claim 20.