CN112901487A

CN112901487A - Scroll plate assembly, scroll compressor and air conditioner

Info

Publication number: CN112901487A
Application number: CN202110338891.1A
Authority: CN
Inventors: 谭琴; 江波; 杨志鹏; 罗承卓; 胡超奇; 宋红飞
Original assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Current assignee: Anhui Meizhi Precision Manufacturing Co Ltd
Priority date: 2021-03-30
Filing date: 2021-03-30
Publication date: 2021-06-04

Abstract

The application relates to the technical field of compressors and provides a scroll plate assembly, a scroll compressor and an air conditioner. Wherein, the vortex dish subassembly includes: the static vortex disk is provided with an air inlet, an air outlet and an oil injection channel; the movable scroll plate is meshed with the fixed scroll plate, a working cavity is formed between the movable scroll plate and the fixed scroll plate, an oil injection groove communicated with a back pressure cavity of the scroll compressor is arranged on the movable scroll plate, and the movable scroll plate is configured to move horizontally relative to the fixed scroll plate so as to compress gas entering the working cavity; the oil injection passage is intermittently communicated with the oil injection groove and the working chamber, so that oil in the backpressure chamber is intermittently injected into the working chamber under the action of pressure difference between the backpressure chamber and the working chamber. In the technical scheme of this application, can prevent effectively that the gas in the working chamber from leaking to the backpressure cavity to reduce gaseous flow loss in scroll assembly working process, be favorable to promoting scroll compressor and improve the efficiency.

Description

Scroll plate assembly, scroll compressor and air conditioner

Technical Field

The application relates to the technical field of compressors, in particular to a scroll plate assembly, a scroll compressor and an air conditioner.

Background

At present, the pressure of a back pressure cavity of a scroll compressor is intermediate pressure, a movable scroll plate is tightly attached to a fixed scroll plate under the action of the pressure of the back pressure cavity, if the pressure of the back pressure cavity is too high, the friction loss of the attaching surface of the movable scroll plate and the fixed scroll plate is increased, and the power is increased; if the pressure of the back pressure cavity is too small, the movable scroll plate cannot be stably attached to the fixed scroll plate, the movable scroll plate is prone to overturn, air leakage occurs, and the working capacity of the scroll compressor is reduced. Through the scheme that sets up the backpressure hole in the working chamber among the prior art, make backpressure hole and backpressure chamber intercommunication to make the backpressure chamber have the intermediate pressure that is higher than suction pressure. However, in this solution, since the pressure of the working chamber changes with the operation of the fixed scroll, when the pressure of the working chamber at the back pressure hole is high, the gas in the working chamber easily enters the back pressure chamber through the back pressure hole, and when the pressure of the working chamber at the back pressure hole is low, the gas easily enters the working chamber through the back pressure hole, thereby causing the flow loss of the gas and affecting the energy efficiency of the scroll compressor.

Disclosure of Invention

According to an embodiment of the present application, it is intended to at least improve one of technical problems existing in the prior art or the related art.

To this end, it is an object according to embodiments of the present application to provide a scroll assembly.

It is another object of an embodiment according to the present application to provide a scroll compressor.

It is a further object of an embodiment according to the present application to provide an air conditioner.

To achieve the above object, according to an embodiment of a first aspect of the present application, there is provided a scroll assembly including: the static vortex disk is provided with an air inlet, an air outlet and an oil injection channel; the movable scroll plate is meshed with the fixed scroll plate, a working cavity is formed between the movable scroll plate and the fixed scroll plate, an oil injection groove communicated with a back pressure cavity of the scroll compressor is arranged on the movable scroll plate, and the movable scroll plate is configured to move horizontally relative to the fixed scroll plate so as to compress gas entering the working cavity; the oil injection passage is intermittently communicated with the oil injection groove and the working chamber, so that oil in the backpressure chamber is intermittently injected into the working chamber under the action of pressure difference between the backpressure chamber and the working chamber.

According to an embodiment of the first aspect of the present application, a scroll assembly including a fixed scroll and an orbiting scroll may be used in a scroll compressor. The movable vortex plate and the fixed vortex plate are meshed with each other, and a working chamber is defined between the movable vortex plate and the fixed vortex plate; the orbiting scroll is capable of translating relative to the fixed scroll. Through set up inlet port and exhaust hole on quiet vortex dish to make gas can get into the working chamber by the inlet port, with the operation in-process at the vortex dish that moves, change the structural state of working chamber, thereby compressed gas, and make the gas after the compression discharge to the exhaust chamber of scroll compressor through the exhaust hole.

The oil injection channel is arranged on the static vortex disk, the oil injection groove is correspondingly arranged on the movable vortex disk and can be communicated with the backpressure chamber of the vortex compressor, so that in the running process of the movable vortex disk, the oil injection groove can be intermittently communicated with the oil injection channel and the working chamber, oil in the backpressure chamber is driven to flow into the working chamber through the oil injection groove and the oil injection channel by utilizing the pressure difference between the working chamber and the backpressure chamber, the joint surface between the movable vortex disk and the static vortex disk is lubricated, gaps in the working chamber are sealed, gas in the working chamber is prevented from leaking to the backpressure chamber, meanwhile, when the oil injection groove, the oil injection channel and the working chamber are in a disconnected and communicated state, the gas in the backpressure chamber can be prevented from entering the working chamber through the oil injection channel, intermittent oil injection is realized, and the flow loss of the gas is reduced in the working process of the vortex disk assembly, is beneficial to promoting the scroll compressor to improve the energy efficiency.

In the scroll compressor, a contact surface between the orbiting scroll and the fixed scroll has a fine gap, and gas normally flows into or out of the working chamber under pressure, thereby causing a loss in gas flow. The pressure in the back pressure chamber of the scroll compressor is usually between the suction pressure and the discharge pressure, and oil in the oil storage space of the scroll compressor can enter the back pressure chamber under the action of pressure to provide oil for the working chamber.

In addition, the scroll plate assembly in the above technical solution provided in the embodiment of the present application may further have the following additional technical features:

in the technical scheme, when the pressure of the working chamber is greater than that of the back pressure chamber, the oil injection channel is disconnected from the oil injection groove and the working chamber; when the pressure of the working chamber is lower than that of the back pressure chamber, the oil injection passage is communicated with the oil injection groove and the working chamber.

In the technical scheme, the oil filling channel is alternately communicated and disconnected with the oil filling groove and the working chamber along with the pressure change in the working chamber. When the pressure of the working chamber is higher than that of the back pressure chamber, the communication relation between the oil injection channel and the oil injection groove and between the oil injection channel and the working chamber is cut off through the operation of the movable scroll plate, so that the gas in the working chamber is prevented from entering the back pressure chamber through the oil injection channel and the oil injection groove, and the gas loss is reduced; and when the pressure of working chamber was less than the pressure of backpressure cavity, through the operation that moves the vortex dish, made oiling passageway and oiling groove and working chamber intercommunication, at this moment, formed pressure differential between backpressure cavity and working chamber, the fluid in backpressure cavity gets into working chamber through oiling groove and oiling passageway under the pressure effect to seal the gap to working chamber, prevent that gas from leaking to the backpressure cavity through the gap. The gas flow loss that the gap that above setting can enough reduce the work cavity caused can prevent simultaneously that oiling passageway and oiling groove self from causing gas loss, and is better to the improvement effect of scroll compressor's efficiency.

In the above technical solution, the fixed scroll includes a first end plate and a fixed scroll structure provided on a bottom surface of the first end plate; the oil filling channel comprises an oil filling hole, a communicating hole and a back pressure hole, the oil filling hole is arranged on the bottom surface of the static vortex structure, the back pressure hole is arranged on the bottom surface of the first end plate, and two ends of the communicating hole are respectively communicated with the oil filling hole and the back pressure hole; wherein, the oiling groove is intermittently communicated with the oiling hole, and the backpressure hole is intermittently communicated with the working chamber.

In the technical scheme, the fixed scroll specifically comprises a first end plate and a fixed scroll structure, wherein the fixed scroll structure is arranged on the bottom surface of the first end plate and is arranged in a scroll shape; the exhaust hole is positioned in the static vortex structure so as to facilitate exhaust. The oil injection channel specifically comprises an oil injection hole, a connecting hole and a backpressure hole, the backpressure hole is formed in the bottom surface of the first end plate, the oil injection hole is formed in the bottom surface of the static vortex structure, and the oil injection hole and the backpressure hole are both blind holes; the communicating hole is arranged in the first end plate and the static vortex structure, and two ends of the communicating hole are respectively communicated with the oil filling hole and the backpressure hole, so that a through oil filling channel is formed. In the working process of the scroll compressor, the movable scroll plate translates relative to the fixed scroll plate, the back pressure hole is opened and closed alternately, and meanwhile, the oil injection groove is communicated and disconnected alternately in the oil injection hole, so that the back pressure chamber and the working chamber of the scroll compressor are communicated and disconnected alternately.

In the technical scheme, the movable scroll plate comprises a second end plate and a movable scroll structure arranged on the top surface of the second end plate, the movable scroll structure is meshed with the fixed scroll structure, and a working chamber is formed between the movable scroll structure and the fixed scroll structure; the oiling groove is arranged on the top surface of the second end plate and located on the outer side of the movable vortex structure, one end of the oiling groove extends to the edge of the second end plate, and the other end of the oiling groove extends towards the direction close to the movable vortex structure.

In the technical scheme, the movable scroll plate comprises a second end plate and a movable scroll structure, wherein the movable scroll structure is arranged on the top surface of the second end plate and forms a scroll-shaped arrangement matched with the fixed scroll structure; the movable vortex structure is meshed with the fixed vortex structure and encloses a working chamber. Wherein the shape and volume of the working chamber changes with the operation of the orbiting scroll. Set up the oiling groove through the outside that lies in on the second end plate and move the vortex structure to after the bottom surface laminating of second end plate and quiet vortex structure, the oiling groove can be followed up the operation intermittence nature and the oil filler point intercommunication and the disconnection of moving the vortex dish, so that carry out the oiling operation. One end of the oil filling groove extends to the edge of the second end plate to be communicated with the backpressure cavity, and the other end of the oil filling groove extends towards the direction close to the movable vortex structure to correspond to the position of the oil filling hole.

In the technical scheme, the aperture of the backpressure hole is smaller than the tooth thickness of the movable vortex structure.

In this technical scheme, the top surface of moving the vortex structure is laminated with the bottom surface of first end plate mutually, and aperture size through to the backpressure hole is injectd for the aperture in backpressure hole is less than the tooth thickness of moving the vortex structure, makes and moves the vortex structure when moving the position in backpressure hole, can block off the backpressure hole completely, so that the backpressure hole realizes alternate intercommunication and disconnection with working chamber, in order to prevent that the size of backpressure hole and moving the vortex structure is not matched and leads to gaseous through the backpressure hole to the backpressure cavity leakage.

In the technical scheme, one end of the oil injection groove, which is close to the movable vortex structure, is of an arc structure, and the diameter of the arc structure is equal to the groove width of the oil injection groove.

In this technical scheme, the oiling groove is close to the one end of moving vortex structure and is the circular arc structure, for example semicircular structure, and the machine-shaping of being convenient for can play the guide effect when fluid flows through simultaneously. The groove width of the oil filling groove is equal to the diameter of the arc structure, so that the strip-shaped groove bodies with the same width are formed, the processing is easy, and the pressure change of oil can be reduced when the oil flows through the groove.

In the technical scheme, the groove width of the oil filling groove is larger than or equal to 1mm, and the groove depth of the oil filling groove is larger than or equal to 0.5 mm.

In the technical scheme, the oil injection groove is set to have a groove width dimension of more than or equal to 1mm and a groove depth of more than or equal to 0.5mm, so that when the second end plate is attached to the fixed scroll plate, the oil injection groove is prevented from being too narrow to influence the flow of oil.

In the technical scheme, the bottom surface of the first end plate is provided with a side wall along the circumferential direction, and the air inlet holes are arranged along the radial direction and penetrate through the side wall; wherein, in the direction that the non-orbiting scroll structure is gradually reduced, the included angle between the central line of the air inlet hole and the back pressure hole is 225-315 degrees.

In the technical scheme, the air inlet hole is arranged along the radial direction of the first end plate so as to be convenient for connecting with an air inlet pipe of the scroll compressor; an air inlet hole passes through the side wall of the first end plate so as to be able to communicate with the working chamber. When the air inlet hole and the working chamber are in a communicated state, air suction operation is carried out, the communicated relation between the air inlet hole and the working chamber is blocked along with the operation of the movable scroll plate, then the gas in the working chamber is compressed, and finally the compressed gas is discharged to the exhaust chamber of the scroll compressor through the exhaust hole, so that one-time working cycle is completed. The back pressure hole and the air inlet hole are kept at a proper interval by setting an included angle between the central line of the air inlet hole and the back pressure hole, and particularly, the included angle is in a range of 225-315 degrees in the direction that the static vortex structure is gradually reduced, so that the back pressure hole can obtain better back pressure.

In the technical scheme, the backpressure hole and the air inlet hole are always kept in a disconnected state.

In the technical scheme, the backpressure hole is always kept in a disconnected state with the air inlet hole in the running process of the movable scroll plate, so that the influence of oil injection operation on the air suction process is prevented, and meanwhile, the outward leakage of gas from the air inlet hole in the compression process is also prevented.

In the above technical scheme, the bottom of the second end plate is provided with an eccentric bearing.

In this technical scheme, through set up eccentric bearing in the bottom of second end plate to when assembling in scroll compressor, be convenient for be connected with actuating mechanism's eccentric part, thereby realize moving the eccentric connection of vortex dish, make moving the vortex dish can carry out the translation for static vortex dish under actuating mechanism's drive.

In the above technical solution, the working chamber includes: the first cavity is positioned between the outer side surface of the movable vortex structure and the inner side surface of the fixed vortex structure; the second chamber is positioned between the inner side surface of the movable vortex structure and the outer side surface of the fixed vortex structure; the back pressure hole is communicated with the first cavity and the second cavity alternately, so that oil in the back pressure cavity is injected into the first cavity and the second cavity alternately.

In this technical scheme, the work cavity includes first cavity and second cavity, specifically, forms first cavity between the medial surface of moving vortex structure and the medial surface of quiet vortex structure, forms the second cavity between the medial surface of moving vortex structure and the lateral surface of quiet vortex structure, and along with the operation of moving the vortex dish, the shape and the volume of first cavity and second cavity take place periodic variation. In the process, the back pressure hole is communicated with the first chamber and the second chamber alternately, and when the back pressure hole is blocked by the movable vortex structure, the communication relation between the back pressure hole and the first chamber and the second chamber is cut off. The oil of the back pressure chamber can be alternatively injected into the first chamber and the second chamber under the action of pressure so as to respectively seal the gaps of the first chamber and the second chamber, and further reduce the outward leakage of gas in the working chamber through the gaps.

In the technical scheme, the movable scroll plate moves in a circle in a translation mode, and oil is respectively injected into the first cavity and the second cavity once.

In the technical scheme, a circle of the movable scroll plate which translates relative to the fixed scroll plate is a working cycle, in the process of one working cycle, the first chamber and the second chamber are communicated with the backpressure hole once respectively, and accordingly oil is injected into the first chamber and the second chamber once respectively, so that the oil injection operation is matched with the working cycle of the movable scroll plate.

In the above technical solution, the maximum volume of the first chamber is larger than the maximum volume of the second chamber; wherein the communication duration of the first chamber with the back pressure chamber is greater than or equal to the communication duration of the second chamber with the back pressure chamber.

In the technical scheme, the maximum volume of the first chamber is larger than that of the second chamber, namely the maximum volumes of the first chamber and the second chamber are different, so that the asymmetric type line scroll compressor is convenient to apply. At the moment, the communication duration of the back pressure cavity and the first cavity is not less than the communication duration of the back pressure cavity and the second cavity, and the maximum volumes corresponding to the first cavity and the second cavity are matched with each other, so that different air displacement of the first cavity and the second cavity is realized.

Embodiments of a second aspect of the present application provide a scroll compressor comprising: the oil-gas separator comprises a shell, wherein an air inlet pipe and an air outlet pipe are arranged on the shell, and oil liquid is contained in the shell; the frame is arranged in the shell; the scroll plate assembly in any one of the embodiments of the first aspect is arranged on the frame, the air inlet and the air outlet of the scroll plate assembly are respectively communicated with the air inlet pipe and the air outlet pipe, and a backpressure chamber is formed between the movable scroll plate of the scroll plate assembly and the frame; and the driving assembly is arranged in the shell, and the output end of the driving assembly is eccentrically connected with the movable scroll plate and is used for driving the movable scroll plate to move horizontally relative to the fixed scroll plate.

According to an embodiment of the second aspect of the present application, a scroll compressor comprises a housing, a frame, a scroll assembly and a drive assembly as in the embodiment of the first aspect described above. The frame, the scroll assembly and the driving assembly are all arranged in the shell. The frame serves as a mounting base for the scroll assembly and the drive assembly to support the scroll assembly and the drive assembly. A static scroll of the scroll assembly is fixedly connected to the rack, and a back pressure chamber is formed between a movable scroll of the scroll assembly and the rack; the output end of the driving assembly is eccentrically connected with the movable scroll plate so as to drive the movable scroll plate to move in a translation mode relative to the fixed scroll plate. An air inlet pipe and an exhaust pipe are arranged on the shell, the air inlet pipe is communicated with an air inlet hole of the fixed scroll, and an exhaust hole of the fixed scroll is communicated with the exhaust pipe through an exhaust cavity in the shell so as to facilitate air suction and exhaust operations. The casing is stored with fluid, and fluid can get into the backpressure chamber through the oil duct.

Wherein, along with the operation that moves the vortex dish, the oiling passageway of quiet vortex dish can intermittent type nature and move the oiling groove and the working chamber intercommunication of vortex dish, in order to realize intermittent type nature intercommunication and the disconnection between backpressure cavity and the working chamber, and then utilize the pressure differential between backpressure cavity and the working chamber, make in the fluid intermittent type nature injection working chamber of backpressure cavity, in order to seal the gap in the working chamber, prevent the gas leakage of working chamber, and simultaneously, can prevent that the gas in the working chamber from passing through fuel feeding passageway and oiling groove entering backpressure cavity, thereby effectively reduce the gas flow loss in the scroll compressor working process, be favorable to promoting scroll compressor and improve the efficiency.

In addition, the scroll compressor in this scheme also has all the advantages of the scroll assembly in any one of the above embodiments of the first aspect, and details are not repeated here.

An embodiment of a third aspect of the present application provides an air conditioner, comprising: an indoor unit; and the outdoor unit is connected with the indoor unit through a pipeline, and the outdoor unit is provided with the scroll compressor in the embodiment of the second aspect.

According to an embodiment of the third aspect of the present application, an air conditioner includes an indoor unit and an outdoor unit connected by a pipe to perform air conditioning by a circulation flow of a refrigerant. The outdoor unit is provided with the scroll compressor in the embodiment of the second aspect, and is configured to compress a refrigerant and change a state of the refrigerant, so as to meet an operation requirement of an air conditioner.

In addition, the air conditioner in this scheme also has all the beneficial effects of the scroll compressor in the embodiment of the second aspect, which are not described herein again.

Additional aspects and advantages of the embodiments of the application will be set forth in part in the description which follows or may be learned by practice of the application.

Drawings

The above and/or additional aspects and advantages of embodiments of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 illustrates a cross-sectional view of a scroll compressor according to one embodiment of the present application;

FIG. 2 shows a partial schematic view of FIG. 1;

FIG. 3 illustrates an upper structural schematic view of a fixed scroll according to an embodiment of the present application;

FIG. 4 illustrates a schematic view of the lower structure of a orbiting scroll according to one embodiment of the present application;

FIG. 5 shows a schematic view of a fixed scroll according to an embodiment of the present application;

FIG. 6 shows a cross-sectional view A-A of FIG. 5;

FIG. 7 illustrates a schematic view of a orbiting scroll according to one embodiment of the present application;

FIG. 8 shows a cross-sectional view taken along line B-B of FIG. 7;

FIG. 9 shows a schematic view of a fixed scroll according to an embodiment of the present application;

FIG. 10 illustrates a cross-sectional view of a scroll assembly according to one embodiment of the present application;

FIG. 11 illustrates a schematic view of a scroll assembly according to one embodiment of the present application;

FIG. 12 illustrates a cross-sectional view of a scroll assembly according to one embodiment of the present application;

FIG. 13 illustrates a schematic view of a scroll assembly according to one embodiment of the present application;

FIG. 14 illustrates a cross-sectional view of a scroll assembly according to one embodiment of the present application;

FIG. 15 illustrates a schematic view of a scroll assembly according to one embodiment of the present application;

FIG. 16 illustrates a cross-sectional view of a scroll assembly according to one embodiment of the present application;

FIG. 17 illustrates a schematic view of a scroll assembly according to one embodiment of the present application;

FIG. 18 illustrates a cross-sectional view of a scroll assembly according to one embodiment of the present application;

FIG. 19 illustrates a schematic view of a scroll assembly according to one embodiment of the present application;

FIG. 20 illustrates a cross-sectional view of a scroll assembly according to one embodiment of the present application;

FIG. 21 illustrates a schematic view of a scroll assembly according to one embodiment of the present application;

FIG. 22 illustrates a cross-sectional view of a scroll assembly according to one embodiment of the present application;

FIG. 23 illustrates a schematic view of a scroll assembly according to one embodiment of the present application;

FIG. 24 illustrates a cross-sectional view of a scroll assembly according to one embodiment of the present application;

FIG. 25 illustrates a schematic view of a scroll assembly according to an embodiment of the present application;

fig. 26 shows a schematic block diagram of an air conditioner according to an embodiment of the present application.

Wherein, the correspondence between the reference numbers and the names of the components in fig. 1 to 26 is as follows:

1 scroll plate component, 11 static plate, 111 static plate end plate, 1111 bottom wall, 1112 side wall, 112 static plate scroll, 113 air inlet hole, 114 exhaust hole, 115 oiling channel, 1151 oiling hole, 1152 communicating hole, 1153 back pressure hole, 12 dynamic plate, 121 dynamic plate end plate, 122 dynamic plate scroll, 123 oiling groove, 124 eccentric bearing, 13 working chamber, 131 first chamber, 132 second chamber, 2 scroll compressor, 21 shell, 211 air inlet pipe, 212 air outlet pipe, 213 back pressure chamber, 214 air outlet chamber, 22 frame, 23 driving component, 231 motor, 232 crankshaft, 3 air conditioner, 31 indoor unit, 32 outdoor unit.

Detailed Description

In order that the above objects, features and advantages of the embodiments according to the present application may be more clearly understood, embodiments according to the present application will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth to provide a thorough understanding of embodiments according to the present application, however, embodiments according to the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

Scroll plate assemblies, scroll compressors, and air conditioners according to some embodiments of the present application are described below with reference to fig. 1-26.

Example one

The present embodiment provides a scroll plate assembly 1 which may be used in a scroll compressor 2.

As shown in fig. 1 and 2, the scroll assembly 1 includes a fixed scroll 11 (i.e., a fixed scroll) and a movable scroll 12 (i.e., a movable scroll). The movable plate 12 is engaged with the stationary plate 11 and defines a working chamber 13 with the stationary plate 11.

The movable disc 12 is capable of translating relative to the stationary disc 11 and the working chamber 13 dynamically changes in form and volume during operation of the movable disc 12.

The static disc 11 is provided with an air inlet 113 and an air outlet 114; when assembled to the scroll compressor 2, the intake port 113 communicates with the intake pipe 211 of the scroll compressor 2, and the discharge port 114 communicates with the discharge chamber 214 of the scroll compressor 2.

During the operation of the scroll compressor 2, gas can enter the working chamber 13 through the gas inlet hole 113, and the gas in the working chamber 13 is compressed under the action of the movable disc 12; the compressed gas can be discharged through the gas discharge port 114 to the gas discharge chamber 214 of the scroll compressor 2 and then to the outside through the gas discharge pipe 212.

As shown in fig. 3 and 4, the stationary platen 11 is provided with a lubricant passage 115, and the movable platen 12 is provided with a lubricant groove 123 corresponding thereto, and the lubricant groove 123 can communicate with the back pressure chamber 213 of the scroll compressor 2. During operation of the cam plate 12, the oiling groove 123 can be intermittently communicated with the oiling channel 115 and the working chamber 13, the back pressure chamber 213 can be communicated with the working chamber 13, and the oiling groove 123 can be intermittently disconnected from the oiling channel 115 and the working chamber 13.

There is the pressure differential between work chamber 13 and the back pressure chamber 213, and fluid in the back pressure chamber 213 can be under pressure, through oiling groove 123 and oiling passageway 115 flow in work chamber 13, realize intermittent type nature oiling to lubricate the laminating face between driving plate 12 and the quiet dish 11, simultaneously, seal the gap in the work chamber 13.

In the scroll compressor 2, since a minute gap is formed in the contact surface between the movable platen 12 and the stationary platen 11, gas normally flows into or out of the working chamber 13 under pressure, and the flow loss of gas is caused.

The scroll plate assembly 1 in this embodiment can effectively prevent the gas in the working chamber 13 from leaking to the back pressure chamber 213, and can prevent the gas in the back pressure chamber 213 from entering the working chamber 13 through the oil injection channel 115, thereby reducing the flow loss of the gas in the working process of the scroll plate assembly 1, and facilitating the promotion of the energy efficiency improvement of the scroll compressor 2.

It will be appreciated that the pressure in the back pressure chamber 213 of the scroll compressor 2 is generally between the suction pressure and the discharge pressure and that oil in the oil storage space of the scroll compressor 2 can enter the back pressure chamber 213 under pressure to provide oil to the working chamber 13.

Example two

The embodiment provides a scroll plate assembly 1, and is further improved on the basis of the first embodiment.

As shown in fig. 1 to 4, the oil filling passage 115 is alternately communicated with and disconnected from the oil groove 123 and the working chamber 13 as the pressure in the working chamber 13 varies.

When the pressure of the working chamber 13 is higher than that of the back pressure chamber 213 at which the pressure of the working chamber 13 is high, the communication between the fueling passage 115 and the fueling groove 123 and the working chamber 13 is interrupted by the operation of the movable disk 12 to prevent the gas in the working chamber 13 from entering the back pressure chamber 213 through the fueling passage 115 and the fueling groove 123 to reduce the gas loss.

When the pressure of the working chamber 13 is lower than the pressure of the back pressure chamber 213, the pressure of the working chamber 13 is lower, the oil injection passage 115 is communicated with the oil injection groove 123 and the working chamber 13 by the operation of the movable disk 12, a pressure difference is formed between the back pressure chamber 213 and the working chamber 13, and the oil in the back pressure chamber 213 enters the working chamber 13 through the oil injection groove 123 and the oil injection passage 115 under the pressure action, so that the gap of the working chamber 13 is sealed, and the gas is prevented from leaking to the back pressure chamber 213 through the gap.

The arrangement in this embodiment can reduce the gas flow loss caused by the gap of the working chamber 13, and at the same time, can prevent the gas loss caused by the oil filling passage 115 and the oil filling groove 123, and has a better effect of improving the energy efficiency of the scroll compressor 2.

EXAMPLE III

The embodiment provides a scroll plate assembly 1, and is further improved on the basis of the second embodiment.

As shown in fig. 1 to 4, the stationary disk 11 specifically includes a stationary disk end plate 111 (i.e., a first end plate) and a stationary disk wrap 112 (i.e., a stationary scroll structure). The fixed wrap 112 is provided on the bottom surface of the fixed end plate 111 and is spirally provided. An exhaust hole 114 is formed in the stationary scroll 112 to facilitate exhaust.

As shown in fig. 5 and 6, the oil injection passage 115 specifically includes an oil injection hole 1151, a connection hole, and a back pressure hole 1153, the back pressure hole 1153 is disposed on the bottom surface of the stationary disk end plate 111, the oil injection hole 1151 is disposed on the bottom surface of the stationary disk scroll 112, and both the oil injection hole 1151 and the back pressure hole 1153 are blind holes; the communication hole 1152 is provided inside the stationary disk end plate 111 and the stationary disk wrap 112, and both ends of the communication hole 1152 are communicated with the oil filling hole 1151 and the back pressure hole 1153, respectively, thereby forming a through oil filling passage 115.

During the operation of the scroll compressor 2, the movable disc 12 translates relative to the stationary disc 11, and the back pressure holes 1153 are opened and closed alternately, and meanwhile, the oil filling groove 123 is communicated and disconnected alternately with the oil filling hole 1151, so that the back pressure chamber 213 of the scroll compressor 2 is communicated and disconnected alternately with the working chamber 13.

It should be noted that the bottom surface and the top surface in the present embodiment are referred to the height direction of the stationary plate 11 in the assembled state, for example, the state in fig. 1 and 2; fig. 3 shows a schematic view of the lower structure of the stationary plate 11, not in the assembled state.

Example four

The embodiment provides a scroll plate assembly 1, and further improvement is made on the basis of the third embodiment.

As shown in fig. 1 to 4, the movable platen 12 specifically includes a movable platen end plate 121 (i.e., a second end plate) and a movable platen scroll 122 (i.e., a movable scroll structure), and the movable platen scroll 122 is disposed on a top surface of the movable platen end plate 121 and forms a spiral arrangement matching the fixed platen scroll 112. Orbiting scroll 122 meshes with stationary scroll 112 and encloses working chamber 13 with stationary scroll 112.

Wherein the shape and volume of the working chamber 13 changes with the operation of the movable disk 12. An oil filling groove 123 is formed in the top surface of the movable disk end plate 121 at a position outside the movable disk lap 122, so that after the top surface of the movable disk end plate 121 is attached to the bottom surface of the fixed disk lap 112, the oil filling groove 123 can be intermittently communicated with and disconnected from an oil filling hole 1151 along with the operation of the movable disk 12.

Wherein, one end of the oil filling groove 123 extends to the edge of the movable disc end plate 121, so that when the scroll disc assembly 1 is assembled with the scroll compressor 2, the oil filling groove 123 can be communicated with the back pressure chamber 213 of the scroll compressor 2; the other end of the oil filling groove 123 extends in a direction approaching the orbiting scroll 122 to correspond to the position of the oil filling hole 1151 to be able to communicate with the oil filling hole 1151 for facilitating the oil filling operation.

Further, the aperture of the back pressure hole 1153 is smaller than the tooth thickness of the movable scroll 122, so that the movable scroll 122 can completely block the back pressure hole 1153 when moving to the position of the back pressure hole 1153, so that the back pressure hole 1153 and the working chamber 13 are alternately connected and disconnected, and further the situation that the back pressure hole 1153 is not matched with the size of the movable scroll 122 and gas leaks to the back pressure chamber 213 through the back pressure hole 1153 is prevented.

EXAMPLE five

The embodiment provides a scroll plate assembly 1, and further improvement is made on the basis of the fourth embodiment.

As shown in FIG. 7, the oil groove 123 has an arc structure, specifically a semi-circular structure, near the orbiting scroll 122, so as to facilitate the forming process, and can guide the oil when the oil flows through.

The tank width of the oil tank 123 is equal to the diameter of the circular arc structure, so that the oil tank 123 integrally forms a strip-shaped tank body with the same width, the processing is easy, and the pressure change of oil caused by the width change can be reduced when the oil flows through.

Further, the width of the oil filling groove 123 is greater than or equal to 1mm, and the depth of the oil filling groove 123 is greater than or equal to 0.5mm, so that when the movable disc end plate 121 is attached to the stationary disc 11, the oil filling groove 123 can keep a proper flow area, and the oil filling groove 123 is prevented from being too narrow to influence the normal flow of oil.

EXAMPLE six

As shown in fig. 1, 2 and 8, the bottom of the movable plate end plate 121 is provided with an eccentric bearing 124. The eccentric bearing 124 can be connected to an eccentric component of the drive mechanism (e.g., a crankshaft) to effect an eccentric connection of the movable platen 12 when the scroll assembly 1 is assembled to the scroll compressor 2. When the scroll compressor 2 is in operation, the movable disk 12 can be driven by the eccentric part of the driving mechanism to translate relative to the fixed disk 11 so as to compress gas.

EXAMPLE seven

As shown in fig. 1 to 3 and 9, stationary disk end plate 111 of stationary disk 11 includes bottom wall 1111 and side wall 1112, side wall 1112 is provided along the circumferential direction of bottom wall 1111, and stationary disk scroll 112 is located inside side wall 1112. The air intake holes 113 are provided in the radial direction of the stationary platen end plate 111 so as to connect with the air intake pipe 211 of the scroll compressor 2; meanwhile, the intake holes 113 penetrate the side wall 1112 of the stationary-disk end plate 111 so as to be able to make communication with the working chamber 13.

When the air inlet hole 113 is communicated with the working chamber 13, air suction operation is carried out, and air enters the working chamber 13 through the air inlet hole 113; with the operation of the movable disc 12, the air inlet hole 113 is disconnected from the working chamber 13, so that the air in the working chamber 13 is compressed, and the compressed air is discharged to the air discharge chamber 214 of the scroll compressor 2 through the air discharge hole 114, thereby completing one working cycle.

Specifically, as shown in fig. 9, in a direction in which the stationary scroll 112 is gradually reduced (i.e., in a counterclockwise direction in fig. 9), the center line of the air inlet hole 113 rotates by an included angle β around the center point of the stationary scroll 11 to the center point of the back pressure hole 1153, and the included angle β is greater than or equal to 225 ° and less than or equal to 315 °, within this range, the back pressure hole 1153 can obtain a better back pressure.

Example eight

As shown in fig. 1 to 4, the intake hole 113 extends to the outside of the stationary wrap 112, and the back pressure hole 1153 is located at the inside of the stationary wrap 112. In the operation process of the movable disc 12, the movable disc 12 can separate the back pressure hole 1153 from the air inlet hole 113, so that the back pressure hole 1153 is always kept in a disconnected state with the air inlet hole 113, the influence of oil injection operation on the air suction process is prevented, and meanwhile, in the compression process, the air can be prevented from leaking outwards from the air inlet hole 113.

Example nine

As shown in fig. 1, 2 and 10, the working chamber 13 includes a first chamber 131 and a second chamber 132. Specifically, a first chamber 131 is formed between the outer side surface of the orbiting scroll 122 and the inner side surface of the stationary scroll 112, and a second chamber 132 is formed between the inner side surface of the orbiting scroll 122 and the outer side surface of the stationary scroll 112.

As the movable disk 12 operates, the shape and volume of the first and

second chambers

131 and 132 change periodically. In this process, the back pressure hole 1153 is alternately communicated with the first chamber 131 and the second chamber 132, and the communication between the back pressure hole 1153 and the first chamber 131 and the second chamber 132 is interrupted when the back pressure hole 1153 is blocked by the orbiting scroll 122.

Wherein, due to the pressure difference between the back pressure chamber 213 and the working chamber 13, the oil in the back pressure chamber 213 can be alternately injected into the first chamber 131 and the second chamber 132 under the pressure effect along with the operation of the movable plate 12, so as to seal the gap between the first chamber 131 and the second chamber 132, and further prevent the gas in the working chamber 13 from leaking out through the gap.

Further, the movable plate 12 translates one revolution relative to the stationary plate 11 for one working cycle. During one working cycle, the first and

second chambers

131 and 132 communicate with the back pressure hole 1153 once, respectively, and accordingly, the back pressure chamber 213 oils the first and

second chambers

131 and 132 once, respectively, to match the oiling operation with the working cycle of the movable platen 12. Wherein the back pressure hole 1153 is closed between the two oil filling processes to prevent gas from reversely flowing into the back pressure chamber 213 from the back pressure hole 1153.

Example ten

The embodiment provides a scroll plate assembly 1, and further improvement is made on the basis of the ninth embodiment.

The maximum volume of the first chamber 131 is larger than the maximum volume of the second chamber 132, i.e. the maximum volumes of the first chamber 131 and the second chamber 132 are different, and there is a volume difference between them. The communication duration of the first chamber 131 and the back pressure chamber 213 is longer than or equal to the communication duration of the second chamber 132 and the back pressure chamber 213, that is, the communication duration of the back pressure chamber 213 and the first chamber 131 is not shorter than the communication duration of the back pressure chamber 213 and the second chamber 132, so that the communication duration of each of the first chamber 131 and the second chamber 132 and the back pressure chamber 213 is matched with the maximum volume of each of the first chamber 131 and the second chamber 132, and different exhaust volumes of the first chamber 131 and the second chamber 132 are realized, so that the asymmetric-line scroll compressor is convenient to apply.

One specific embodiment of the above scroll assembly 1 is provided as follows:

the present embodiment provides a scroll assembly 1 that may be used with scroll assembly 1.

The stationary disc 11 specifically includes a stationary disc end plate 111 (i.e., a first end plate) and a stationary disc wrap 112 (i.e., a stationary scroll structure). The fixed wrap 112 is provided on the bottom surface of the fixed end plate 111 and is spirally provided. Stationary disk end plate 111 includes a bottom wall 1111 and a side wall 1112, and side wall 1112 is provided along the circumferential direction of bottom wall 1111, and stationary disk scroll 112 is located inside side wall 1112.

As shown in fig. 1 to 3, the stationary plate 11 is provided with an intake hole 113 and an exhaust hole 114; the air intake holes 113 are provided in the radial direction of the stationary platen end plate 111 so as to connect with the air intake pipe 211 of the scroll compressor 2; meanwhile, the intake holes 113 penetrate the side wall 1112 of the stationary-disk end plate 111 so as to be able to make communication with the working chamber 13. An exhaust hole 114 is formed in the stationary scroll 112 to facilitate exhaust. When assembled to the scroll compressor 2, the intake port 113 communicates with the intake pipe 211 of the scroll compressor 2, and the discharge port 114 communicates with the discharge chamber 214 of the scroll compressor 2.

The movable disc 12 can translate relative to the fixed disc 11, and in the working process of the scroll compressor 2, gas can enter the working chamber 13 through the gas inlet hole 113 and compress the gas in the working chamber 13 under the action of the movable disc 12; the compressed gas can be discharged through the gas discharge port 114 to the gas discharge chamber 214 of the scroll compressor 2 and then to the outside through the gas discharge pipe 212.

As shown in fig. 3 and 4, the stationary platen 11 is provided with a grease inlet passage 115, and correspondingly, the movable platen 12 is provided with a grease inlet groove 123, and the grease inlet groove 123 can communicate with the back pressure chamber 213 of the scroll compressor 2.

As shown in fig. 7, an oil groove 123 is provided on the top surface of the rotor end plate 121 at a position outside the rotor wrap 122, and one end of the oil groove 123 extends to the edge of the rotor end plate 121, so that when the scroll disk assembly 1 is assembled with the scroll compressor 2, the oil groove 123 can communicate with the back pressure chamber 213 of the scroll compressor 2; the other end of the oil filling groove 123 extends in a direction approaching the orbiting scroll 122 to correspond to the position of the oil filling hole 1151 to be able to communicate with the oil filling hole 1151 for facilitating the oil filling operation.

During operation of the cam plate 12, the oiling groove 123 can be intermittently communicated with the oiling channel 115 and the working chamber 13, the back pressure chamber 213 can be communicated with the working chamber 13, and the oiling groove 123 can be intermittently disconnected from the oiling channel 115 and the working chamber 13. In this process, the movable platen 12 can separate the back pressure hole 1153 from the intake holes 113, so that the back pressure hole 1153 is always kept disconnected from the intake holes 113 to prevent the oil injection operation from affecting the air suction process.

As shown in fig. 5 and 7, the diameter of the back pressure hole 1153 is smaller than the tooth thickness of the orbiting scroll 122, so that the orbiting scroll 122 can completely block the back pressure hole 1153 when moving to the position of the back pressure hole 1153, so that the back pressure hole 1153 is alternately connected to and disconnected from the working chamber 13.

The pressure difference exists between the working chamber 13 and the back pressure chamber 213, and the oil in the back pressure chamber 213 can flow into the working chamber 13 through the oil filling groove 123 and the oil filling channel 115 under the action of pressure, so that intermittent oil filling is realized.

Specifically, when the pressure of the working chamber 13 is greater than the pressure of the back pressure chamber 213, at which the pressure of the working chamber 13 is higher, the communication relationship between the oil filling passage 115 and the oil reservoir 123 and the working chamber 13 is broken by the operation of the movable dial 12 to prevent the gas in the working chamber 13 from entering the back pressure chamber 213 through the oil filling passage 115 and the oil reservoir 123 to reduce the gas loss.

As shown in FIG. 7, the oil groove 123 has an arc structure, specifically a semi-circular structure, near the orbiting scroll 122, so as to facilitate the forming process, and can guide the oil when the oil flows through. The tank width of the oil tank 123 is equal to the diameter of the circular arc structure, so that the oil tank 123 integrally forms a strip-shaped tank body with the same width, the processing is easy, and the pressure change of oil caused by the width change can be reduced when the oil flows through.

The width of the oil filling groove 123 is greater than or equal to 1mm, and the depth of the oil filling groove 123 is greater than or equal to 0.5mm, so that when the movable disc end plate 121 is attached to the static disc 11, the oil filling groove 123 can keep a proper flow area, and the oil filling groove 123 is prevented from being too narrow to influence the normal flow of oil.

As shown in fig. 1, 2 and 8, the bottom of the movable disk end plate 121 is provided with an eccentric bearing 124 for connecting an eccentric component (e.g., crankshaft) of the drive mechanism when the scroll disk assembly 1 is assembled to the scroll compressor 2.

As shown in fig. 9, the center line of the air intake hole 113 and the back pressure hole 1153 form an included angle β so as to maintain a proper interval between the back pressure hole 1153 and the air intake hole 113, and specifically, in a direction in which the stationary scroll 112 is gradually reduced (i.e., a counterclockwise direction in fig. 9), the center line of the air intake hole 113 is rotated by the included angle β around the center point of the stationary scroll 11 to the center point of the back pressure hole 1153, and the included angle β is larger than or equal to 225 ° and smaller than or equal to 315 °, within which range the back pressure hole 1153 can obtain a preferable back pressure.

As the movable platen 12 operates, the shapes and volumes of the first and

second chambers

131 and 132 are periodically changed, and the maximum volume of the first chamber 131 is greater than that of the second chamber 132, and correspondingly, the communication duration of the first chamber 131 with the back pressure chamber 213 is greater than that of the second chamber 132 with the back pressure chamber 213, so as to be applied to the asymmetric-type scroll compressor. In this process, the back pressure hole 1153 is alternately communicated with the first chamber 131 and the second chamber 132, and the communication between the back pressure hole 1153 and the first chamber 131 and the second chamber 132 is interrupted when the back pressure hole 1153 is blocked by the orbiting scroll 122.

Wherein, the movable disc 12 translates one circle relative to the static disc 11 for one working cycle. During one working cycle, the first and

second chambers

The operation of the movable plate 12 in a working cycle is explained in detail below:

fig. 10 and 11 show a state where the back pressure port 1153 is blocked by the lap 122, and at this time, the oil groove 123 is disconnected from the oil port 1151 for a while, and the back pressure port 1153 is just disconnected from the second chamber 132. As the movable disk 12 continues to operate, the back pressure hole 1153 is about to enter the first chamber 131, as shown in fig. 12 and 13.

Fig. 14 and 15 show the state where the back pressure hole 1153 communicates with the first chamber 131, and at this time, the oil groove 123 communicates with the oil hole 1151 so that the back pressure chamber 213 communicates with the first chamber 131, and oil in the back pressure chamber 213 enters the first chamber 131 under pressure due to the low pressure of the first chamber 131 at the back pressure hole 1153 (lower than the pressure of the back pressure chamber 213).

With the operation of the movable disk 12, as shown in fig. 16 and 17, the back pressure port 1153 remains in communication with the first chamber 131, but the oil reservoir 123 is disconnected from the oil port 1151. At this time, the pressure of the first chamber 131 at the back pressure hole 1153 is high (higher than the pressure of the back pressure chamber 213), but the gas in the first chamber 131 cannot enter the back pressure chamber 213.

Fig. 18 and 19 show a state in which the back pressure port 1153 is blocked by the movable platen 12, in which the oil groove 123 has been disconnected from the oil port 1151 for a while, and the back pressure port 1153 has just been disconnected from the first chamber 131. As the movable disk 12 continues to operate, the back pressure hole 1153 is about to enter the second chamber 132, as shown in fig. 20 and 21.

Fig. 22 and 23 show the state where the back pressure hole 1153 communicates with the second chamber 132, and at this time, the oil groove 123 communicates with the oil hole 1151, so that the back pressure chamber 213 communicates with the second chamber 132, and since the pressure of the second chamber 132 at the back pressure hole 1153 is low (lower than the pressure of the back pressure chamber 213), the oil in the back pressure chamber 213 enters the second chamber 132 under the pressure.

With the operation of the movable disk 12, as shown in the state of fig. 24 and 25, the back pressure port 1153 remains in communication with the second chamber 132, but the filler neck 123 is disconnected from the filler port 1151. At this time, the pressure of the second chamber 132 at the back pressure hole 1153 is high (higher than the pressure of the back pressure chamber 213), but the gas in the second chamber 132 cannot enter the back pressure chamber 213.

EXAMPLE eleven

In the present embodiment, a scroll compressor 2 is provided, as shown in fig. 1 to 4, the scroll compressor 2 includes a housing 21, a frame 22, a scroll assembly 1 and a drive assembly 23 in any of the above embodiments.

The frame 22, scroll assembly 1 and drive assembly 23 are all disposed within the housing 21. The frame 22 serves as a mounting base for the scroll assembly 1 and the drive assembly 23 to support the scroll assembly 1 and the drive assembly 23.

The fixed plate 11 of the scroll assembly 1 is fixedly connected to the frame 22, and a back pressure chamber 213 is formed between the movable plate 12 of the scroll assembly 1 and the frame 22.

The output end of the driving assembly 23 is eccentrically connected with the movable disc 12 to drive the movable disc 12 to translate relative to the fixed disc 11. Specifically, the driving assembly 23 includes a motor 231 and a crankshaft 232, an eccentric portion of the crankshaft 232 is eccentrically connected to the movable disk 12, and the motor 231 outputs power to the movable disk 12 through the crankshaft 232 to drive the movable disk 12 to translate.

An air inlet pipe 211 and an air outlet pipe 212 are arranged on the shell 21, the air inlet pipe 211 is communicated with the air inlet hole 113 of the static disc 11, and the air outlet hole 114 of the static disc 11 is communicated with the air outlet pipe 212 through an air outlet chamber 214 in the shell 21 so as to carry out air suction and air outlet operations. Oil is stored in the housing 21 and can enter the back pressure chamber 213 through an oil passage.

Along with the operation of the movable disc 12, the oil filling channel 115 of the fixed disc 11 can be intermittently communicated with the oil filling groove 123 of the movable disc 12 and the working chamber 13 to realize intermittent communication and disconnection between the back pressure chamber 213 and the working chamber 13, and further, oil in the back pressure chamber 213 is intermittently filled into the working chamber 13 by using the pressure difference between the back pressure chamber 213 and the working chamber 13 to seal a gap in the working chamber 13.

Scroll compressor 2 in this embodiment can effectively prevent the gas leakage of working chamber 13, simultaneously, can prevent that the gas in the working chamber 13 from passing through fuel feeding channel and oiling groove 123 and getting into backpressure chamber 213 to effectively reduce the gas flow loss in the 2 working processes of scroll compressor, be favorable to promoting scroll compressor 2 and improve the energy efficiency.

In addition, the scroll compressor 2 in this embodiment has all the advantages of the scroll assembly 1 in any one of the above embodiments, and details are not repeated herein.

Example twelve

In the present embodiment, an air conditioner 3 is provided, as shown in fig. 1 and 26, the air conditioner 3 includes an indoor unit 31 and an outdoor unit 32 connected by a pipe to perform air conditioning by a circulation flow of a refrigerant. The outdoor unit 32 is provided with the scroll compressor 2 in any of the above embodiments, and is configured to compress a refrigerant and change a state of the refrigerant, so as to meet an operation requirement of the air conditioner 3.

In addition, the air conditioner 3 in this embodiment also has all the advantages of the scroll compressor 2 in any of the above embodiments, and will not be described herein again.

One specific embodiment of the present application is provided below:

a compression structure of a scroll compressor comprising: casing, bent axle, driving disk and quiet dish. The shell is a closed container provided with an air suction pipe and an air exhaust pipe, and the shell is in a high-pressure environment and stores lubricating oil; the crankshaft is provided with an eccentric part and rotates around the fixed shaft; the movable disc is provided with a mirror plate and a vortex scroll standing on the front surface of the mirror plate; the static disc is provided with a suction hole and an exhaust hole and is provided with an inward concave vortex-shaped scroll. The static and dynamic scrolls are engaged to form a compressor working chamber. The working chamber sucks low-pressure gas from a shell suction inlet through the air suction pipe, the low-pressure gas is compressed and discharged into the shell through the static disc exhaust hole, and finally the low-pressure gas is discharged from the shell exhaust pipe.

The working chamber includes: a cavity A (namely a first cavity) between the outer line of the movable plate scroll and the inner line of the static plate scroll, and a cavity B (namely a second cavity) between the inner line of the movable plate scroll and the outer line of the static plate scroll; the back pressure chamber, back pressure chamber pressure is at the intermediate pressure of suction pressure and exhaust pressure, and the back pressure chamber provides holding power for the front of movable plate runner plate hugs closely the quiet dish top surface and prevents that the movable plate from toppling. The back pressure hole is formed in the inner top surface of the static disc, the back pressure hole is alternately communicated with the cavity A and the cavity B along with the movement of the movable disc, and the back pressure hole is covered by the lap of the movable disc during alternation; the oil filling hole is formed in the bottom surface of the fixed disc scroll and communicated with the back pressure hole; the oil injection groove is formed in the front face of the movable disc mirror plate and communicated with the backpressure chamber;

wherein, along with the motion of driving disk, oiling groove and oil filler point intermittent type nature intercommunication, at the backpressure hole pressure rise in-process moreover, before the backpressure hole is covered by the driven plate vortex, oiling groove and oil filler point disconnection intercommunication.

The oil filler point is seted up on static quiet dish, and the oil filler point is seted up on the driving disk of plane motion, designs through the position to the oil filler point, can make oil filler point and oil filler point intermittent type nature intercommunication and disconnection, guarantees moreover at backpressure hole pressure rising in-process, before the passive dish whirlpool of backpressure hole covers, oil filler point and oil filler point disconnection intercommunication. When the pressure of the working cavity at the back pressure hole is lower, the working cavity is communicated with the back pressure cavity; the working cavity at the back pressure hole has higher pressure, and the working cavity is disconnected with the back pressure cavity. The gas in the working cavity is prevented from entering the back pressure chamber, and the breathing loss is reduced. And since the pressure of the back pressure chamber is lower than the exhaust pressure, the lubricating oil in the housing enters the back pressure chamber through the pressure difference. When the oil filling groove is communicated with the oil filling hole, because the pressure of the working cavity at the back pressure hole is lower than that of the back pressure cavity, lubricating oil is injected into the working cavity from the back pressure cavity, so that oil supply of the working cavity is realized, gap sealing is carried out, and gas leakage is prevented.

The shell is provided with an air suction pipe and an exhaust pipe, and lubricating oil is stored at the bottom of the shell. The movable disc is provided with a mirror plate, a vortex-shaped scroll which is vertical to the front surface of the mirror plate and an eccentric bearing which is protruded out of the back surface of the mirror plate, and the front surface of the mirror plate is provided with an oil injection groove. The static disc is provided with a suction hole and an exhaust hole, the concave vortex-shaped scroll is provided with a back pressure hole, the back pressure hole is formed in the inner top surface of the static disc, the oil injection hole is formed in the bottom surface of the scroll of the static disc, and the two holes are communicated with each other through a radial communication hole. The static and dynamic scrolls are engaged to form a compressor working chamber. The working chamber A between the outer line of the movable scroll lap and the inner line of the static scroll lap, and the working chamber B between the inner line of the movable scroll lap and the outer line of the static scroll lap; the compressor is also provided with a main frame for supporting the crankshaft.

The back of the movable plate mirror plate is provided with a backpressure chamber which is defined by the main frame, the static plate and the movable plate. The oil injection groove on the dynamic disk is communicated with the edge of the mirror plate, namely the oil injection groove is communicated with the backpressure cavity.

On one hand, the back pressure chamber is communicated with the high pressure in the shell through a tiny gap; on the other hand, when the backpressure hole is communicated with the working cavity A or the working cavity B and the oil injection groove is also communicated with the oil injection hole, the backpressure cavity is communicated with the working cavity; the back pressure chamber is at an intermediate pressure between the high pressure and the low pressure, and provides a supporting force for the front surface of the movable plate runner plate to cling to the top surface of the static plate to prevent the movable plate from overturning. Lubricating oil is pressed into the backpressure cavity from the shell and then injected into the working cavity, so that oil supply of the working cavity is realized for clearance sealing, and gas leakage is prevented.

In the pressure rising process of the back pressure hole, before the back pressure hole is covered by the lap of the driven disc, the oil filling groove is disconnected with the oil filling hole, and the back pressure hole is disconnected and communicated with the back pressure chamber.

The oil injection groove consists of two parallel lines and an arc, the groove width is equal to the diameter of the arc, the groove width is larger than or equal to 1mm, and the groove depth is larger than or equal to 0.5 mm. The oil injection groove is simple and easy to process.

The central line of the suction hole rotates around the center of the static disc to a beta angle in the direction of reducing the scroll to pass through the back pressure hole, wherein beta is larger than or equal to 225 degrees and smaller than or equal to 315 degrees. Whereby a superior back pressure can be obtained.

For the asymmetric type linear vortex compressor, the volume of the working chamber A is larger than that of the working chamber B, so that the communication time of the back pressure chamber and the working chamber A is preferably not less than that of the back pressure chamber and the working chamber B.

In order to prevent the influence on air suction when oil is sprayed into the working cavity, the back pressure hole is preferably not communicated with the air suction hole of the static disc. When the back pressure hole is about to communicate with the A/B cavity, the A/B cavity completes suction closing.

The technical scheme of some embodiments according to the present application is described in detail above with reference to the accompanying drawings, so that the gas in the working chamber can be effectively prevented from leaking to the back pressure chamber, and the gas in the back pressure chamber can be prevented from entering the working chamber through the oil injection channel, thereby reducing the flow loss of the gas in the working process of the scroll assembly, and facilitating the improvement of energy efficiency of the scroll compressor.

In embodiments according to the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the examples according to the present application can be understood by those of ordinary skill in the art as the case may be.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example in accordance with the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only for the purpose of illustrating preferred embodiments of the present application and is not intended to limit the technical solutions of the present application, and it will be apparent to those skilled in the art that various modifications and variations can be made in the technical solutions of the present application. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the technical scheme of the application shall be included in the protection scope of the application.

Claims

1. A scroll plate assembly for a scroll compressor, comprising:

the static vortex disk is provided with an air inlet, an air outlet and an oil injection channel;

the movable scroll plate is meshed with the fixed scroll plate, a working chamber is formed between the movable scroll plate and the fixed scroll plate, an oil injection groove communicated with a back pressure chamber of the scroll compressor is formed in the movable scroll plate, and the movable scroll plate is configured to move horizontally relative to the fixed scroll plate so as to compress gas entering the working chamber;

the oil injection passage is intermittently communicated with the oil injection groove and the working chamber, so that oil in the back pressure chamber is intermittently injected into the working chamber under the action of pressure difference between the back pressure chamber and the working chamber.

2. The scroll plate assembly of claim 1,

when the pressure of the working chamber is higher than that of the back pressure chamber, the oil injection passage is disconnected from the oil injection groove and the working chamber;

when the pressure of the working chamber is lower than that of the back pressure chamber, the oil injection passage is communicated with the oil injection groove and the working chamber.

3. The scroll plate assembly of claim 2,

the fixed scroll comprises a first end plate and a fixed scroll structure arranged on the bottom surface of the first end plate;

the oil filling channel comprises an oil filling hole, a communicating hole and a back pressure hole, the oil filling hole is arranged on the bottom surface of the static vortex structure, the back pressure hole is arranged on the bottom surface of the first end plate, and two ends of the communicating hole are respectively communicated with the oil filling hole and the back pressure hole;

wherein, the oiling groove with oiling hole intermittent type nature intercommunication, the backpressure hole with work cavity intermittent type nature intercommunication.

4. The scroll plate assembly of claim 3,

the movable scroll plate comprises a second end plate and a movable scroll structure arranged on the top surface of the second end plate, the movable scroll structure is meshed with the fixed scroll structure, and the working chamber is formed between the movable scroll plate and the fixed scroll structure;

the oiling groove is arranged on the top surface of the second end plate and located outside the movable vortex structure, one end of the oiling groove extends to the edge of the second end plate, and the other end of the oiling groove is close to the movable vortex structure and extends in the direction.

5. The scroll plate assembly of claim 4,

the aperture of the backpressure hole is smaller than the tooth thickness of the movable vortex structure.

6. The scroll plate assembly of claim 4,

one end of the oil injection groove close to the movable vortex structure is of an arc structure, and the diameter of the arc structure is equal to the groove width of the oil injection groove.

7. The scroll plate assembly of claim 6,

the groove width of the oil filling groove is larger than or equal to 1mm, and the groove depth of the oil filling groove is larger than or equal to 0.5 mm.

8. The scroll plate assembly of claim 4,

the bottom surface of the first end plate is provided with a side wall along the circumferential direction, and the air inlet hole is arranged along the radial direction and penetrates through the side wall;

wherein, in the direction that the non-orbiting scroll structure is gradually reduced, an included angle between a center line of the air inlet hole and the back pressure hole is 225 ° to 315 °.

9. The scroll plate assembly of claim 4,

the back pressure hole and the air inlet hole are always kept in a disconnected state.

10. The scroll plate assembly of claim 4,

and an eccentric bearing is arranged at the bottom of the second end plate.

11. The scroll assembly of any one of claims 4 to 10, wherein the working chamber comprises:

the first cavity is positioned between the outer side face of the movable vortex structure and the inner side face of the fixed vortex structure;

the second cavity is positioned between the inner side surface of the movable vortex structure and the outer side surface of the fixed vortex structure;

the back pressure hole is communicated with the first chamber and the second chamber alternately, so that oil in the back pressure chamber is injected into the first chamber and the second chamber alternately.

12. The scroll plate assembly of claim 11,

the movable scroll plate moves in a circle in a translation mode, and oil is injected into the first cavity and the second cavity once respectively.

13. The scroll plate assembly of claim 11,

the maximum volume of the first chamber is greater than the maximum volume of the second chamber;

wherein the first chamber is in communication with the back pressure chamber for a period of time greater than or equal to the period of time that the second chamber is in communication with the back pressure chamber.

14. A scroll compressor, comprising:

the oil-gas separator comprises a shell, wherein an air inlet pipe and an air outlet pipe are arranged on the shell, and oil liquid is contained in the shell;

the frame is arranged in the shell;

the scroll assembly according to any one of claims 1 to 13, provided on the frame, wherein the intake and exhaust ports of the scroll assembly are respectively communicated with the intake and exhaust pipes, and a back pressure chamber is formed between the movable scroll of the scroll assembly and the frame;

and the driving assembly is arranged in the shell, and the output end of the driving assembly is eccentrically connected with the movable scroll plate and is used for driving the movable scroll plate to move horizontally relative to the fixed scroll plate.

15. An air conditioner, comprising:

an indoor unit;

an outdoor unit connected to the indoor unit through a pipe, the outdoor unit having the scroll compressor of claim 14 provided therein.