CN115163493A

CN115163493A - Scroll compressor and refrigeration equipment

Info

Publication number: CN115163493A
Application number: CN202210988122.0A
Authority: CN
Inventors: 曹红军; 马英超; 杨志鹏; 陈晋涵
Original assignee: Guangdong Midea Environmental Technologies Co Ltd
Current assignee: Guangdong Midea Environmental Technologies Co Ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-10-11
Also published as: WO2024037245A1

Abstract

The invention discloses a scroll compressor and refrigeration equipment, the scroll compressor includes main frame, movable disk and static disk assembly, the said movable disk is installed on the said main frame rotatably, the said movable disk cooperates with said static disk assembly to form the compression chamber, also include: the oil intercepting device is mounted on the static disc assembly; the static disc assembly is provided with an exhaust chamber, an exhaust hole communicated with the exhaust chamber and the compression cavity, and an exhaust channel communicated with the exhaust chamber; the oil interception device is used for preventing oil from entering the discharge channel from the exhaust chamber; the movable disc is provided with an assembling surface which faces away from the static disc assembly, and an assembling gap is formed between the assembling surface and the main frame. According to the invention, the oil intercepting device is adopted to prevent oil in the air flow from entering the discharge channel, and the oil enters the oil groove along the second oil hole and the first oil hole and is used for lubricating the main frame and the movable disc, so that the friction loss between the main frame and the movable disc is reduced, and the service performance of the compressor is improved.

Description

Scroll compressor and refrigeration equipment

Technical Field

The invention relates to the field of compressors, in particular to a scroll compressor and refrigeration equipment.

Background

The dynamic disc of the existing scroll compressor with the low-pressure cavity structure is directly located on the main frame, and the contact surface of the dynamic disc and the main frame is often designed to be a plane. The action force between the movable disc and the main frame of the compressor with the axially floating static disc is more than 10KN, and under the condition of high-speed operation, an oil film between the movable disc and the main frame is easy to break to cause boundary friction, so that the friction loss of the compressor is increased, the energy efficiency of the compressor is greatly reduced, even high-temperature burning is caused, and the friction surface is damaged and the compressor is scrapped.

Disclosure of Invention

The invention mainly aims to provide a scroll compressor, which aims to solve the problem that the boundary friction between the conventional movable disk and a main frame is overlarge.

In order to achieve the above object, the scroll compressor provided by the present invention includes a main frame, a movable platen and a stationary platen assembly, wherein the movable platen is rotatably installed on the main frame, the movable platen and the stationary platen assembly cooperate to form a compression chamber, and the scroll compressor further includes:

the oil intercepting device is mounted on the static disc assembly; the static disc assembly is provided with an exhaust chamber, an exhaust hole communicated with the exhaust chamber and the compression cavity, and an exhaust channel communicated with the exhaust chamber; the oil interception device is used for preventing oil from entering the discharge channel from the exhaust chamber;

the movable disc is provided with an assembling surface back to the static disc assembly, and an assembling gap is formed between the assembling surface and the main frame; the movable disc is provided with a first oil hole communicated with the assembly gap; the static disc assembly is also provided with a second oil hole communicated with the exhaust chamber; one end, far away from the assembly gap, of the first oil hole rotates along with the movable disc and is intermittently communicated with the second oil hole.

In some examples, an end face of the main frame facing the assembly gap is provided with an oil groove communicating with the assembly gap, and the first oil hole communicates with the oil groove when the first oil hole rotates with the movable disc.

In some examples, the oil groove is an arcuate groove.

In some examples, the number of the oil grooves is at least two, and adjacent oil grooves are annularly distributed centering on the axis of the main frame.

In some examples, the main frame is provided with a connecting groove, and the adjacent oil grooves are communicated through the connecting groove.

In some examples, the product of the volume of the sump and the pressure value of the oil within the sump is M;

the sum of the thrust of the compression cavity and the static disc assembly to the movable disc is N, wherein M is not more than N.

In some examples, the first oil hole includes:

the first oil passing hole is formed in the movable disc, extends to the assembling surface and rotates along with the movable disc and is intermittently communicated with the second oil hole;

the first transverse hole is formed in the moving disc and communicated with the first oil passing hole; and

and the second oil passing hole is formed in the movable disc, and the first transverse hole is communicated with the oil groove through the second oil passing hole.

In some examples, the static disc assembly has a suction port communicating with the compression chamber, and an end of the second oil hole remote from the discharge chamber is disposed near the suction port of the compression chamber.

In some examples, the first oil hole has a front port disposed toward the stationary disc assembly; the second oil hole has a rear port disposed toward the movable disk; when one end of the first oil hole, which is far away from the assembly gap, is communicated with the second oil hole, at least part of a front port of the first oil hole is overlapped with a rear port of the second oil hole.

In some examples, an effective flow area of a front port of the first oil hole is smaller than an effective flow area of a rear port of the second oil hole.

In some examples, the second oil hole includes:

the second transverse hole is formed in the static disc assembly;

the third oil passing hole is formed in the static disc assembly and communicated with the second transverse hole, and the third oil passing hole is intermittently communicated with the first oil hole; and

and the fourth oil passing hole is formed in the static disc assembly, and the second transverse hole is communicated with the exhaust chamber through the fourth oil passing hole.

In some examples, an end of the second transverse bore distal from the discharge plenum communicates with an outer annular wall of the stationary disc assembly; and the static disc assembly is provided with a throttler which is embedded in the second transverse hole.

In some examples, the static disc assembly includes a static disc body and a back pressure plate, the static disc body and the dynamic disc cooperate to form the compression chamber; the back pressure plate is arranged on one side of the static disc body, which is back to the dynamic disc, and the exhaust chamber is formed between the back pressure plate and the static disc body; the back pressure plate is provided with the discharge channel; the static disc body is provided with the exhaust hole and the second oil hole.

In some examples, an oil collecting groove is formed in one side, opposite to the movable disc, of the static disc body, and the second oil hole is communicated with the oil collecting groove.

In some examples, the oil interceptor is covered on a side of the movable plate facing the discharge passage; the projection of the oil collecting groove in the axial direction at least partially falls into the projection of the oil interception device in the axial direction.

In some examples, the oil interceptor is fixedly mounted to the exhaust chamber.

In some examples, the oil blocking device is arched, the oil blocking device covers the exhaust hole and arches towards the direction of the discharge passage, and one end of the second oil hole, which is far away from the first oil hole, is located on the inner side of the oil blocking device.

In some examples, the oil cut-off device is at least one of a filter screen or a porous filter element.

The invention also provides an example of a refrigerating device on the basis of the scroll compressor, which comprises the scroll compressor.

According to the technical scheme, the oil intercepting device is adopted to prevent oil in airflow from entering the discharge channel, the oil enters the assembly gap between the main frame and the movable disc along the second oil hole and the first oil hole in the exhaust chamber and can be used for lubricating the main frame and the movable disc, so that the friction loss between the main frame and the movable disc is reduced, and the use performance of the compressor is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of a scroll compressor according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the internal structure of a scroll compressor according to the present invention;

FIG. 3 is a schematic structural diagram of a static plate according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of another embodiment of the stationary plate of the present invention;

FIG. 5 is a cross-sectional view taken along line 4a-4a of FIG. 4;

FIG. 6 is a schematic structural view of an embodiment of a movable plate of the present invention;

fig. 7 is a schematic structural diagram of the mainframe according to an embodiment of the present invention.

The reference numbers indicate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	Crankshaft	20	Main frame
21	Oil groove	22	Connecting groove
				30	Movable disc	31	First oil hole
32	The first oil passing hole	33	First transverse hole
				34	The second oil passing hole	35	Plug
40	Static tray body	41	The second oil hole
				42	Third oil passing hole	43	Second transverse hole
44	The fourth oil passing hole	45	Flow controller
				46	Oil collecting tank	47	Air vent
50	Air suction inlet	60	Back pressure plate
				61	Discharge channel	70	Exhaust chamber
80	Oil interception device	90	Floating plate
				91	Compression chamber

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It should be noted that, if directional indications (such as up, down, left, right, front, back, 8230; etc.) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the figure), and if the specific posture is changed, the directional indications are correspondingly changed.

In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

Referring to fig. 1 and 2, the present invention provides a scroll compressor, which includes a housing (not shown), a crankshaft 10, an eccentric sleeve (not shown), a main frame 20, a movable plate 30, a stationary plate assembly (not shown), and a floating plate 90, wherein the main frame 20 is installed in the housing, the main frame 20 is tightly fitted with the movable plate 30, and the crankshaft 10 is drivingly connected with the movable plate 30 for driving the movable plate 30 to rotate relatively. The scroll compressor further includes functional components such as an oldham ring (not shown), a motor (not shown), and the like. The static disc assembly is used for forming a compression cavity 91 by matching with the movable disc 40, meanwhile, the static disc assembly is provided with an exhaust chamber 70 communicated with the compression cavity 91 and an exhaust channel 61 communicated with the exhaust chamber, and the static disc assembly is also provided with an exhaust hole 47 used for communicating the exhaust chamber 70 with the compression cavity 91.

The shell is internally provided with a partition plate which partitions the inner cavity of the shell into a suction chamber and a discharge chamber, and the main frame 20, the motor, the crankshaft 10, the movable disc 30 and the static disc assembly are all arranged in the suction chamber. The motor is fixed on the shell through interference fit, and the main frame 20 is fixed on the shell through a welding mode. The movable plate 30 and the stationary plate assembly are arranged opposite to each other at a phase angle of 180 degrees, and the movable plate 30 is mounted on the main frame 20 such that the movable plate 30 rotates synchronously with the main frame 20 when the crankshaft 10 rotates relatively, and the movable plate 30 can rotate relatively to the main frame 20, so that the main frame 20 receives an axial force from the movable plate 30. The moving plate 30 moves under the driving of the crankshaft 10, and engages with the stationary plate assembly to form a series of crescent-shaped compression cavities 91 which are isolated from each other and have variable volumes, and the compression cavities 91 communicate with the suction chamber. The floating plate 90 is installed at the back of the static disc assembly, and the floating plate 90 can axially float in the working process of the compressor so as to seal the gap between the static disc assembly and the partition plate, and the static disc assembly can axially float. The static disc assembly has a suction port 50 communicating with the compression chamber 91, and the air flow enters the compression chamber 91 through the suction port 50. In this example, the scroll compressor may further include other functional components, which are referred to in the prior art and will not be described in detail.

It should be noted that although the scroll compressor of the present invention has been described with reference to a number of components, it is only an example of a compressor with a movable and a stationary disk assembly to facilitate understanding, and it is not necessary to refer to all or some of the above components to solve the technical problem of the present invention.

In some examples, the static disc assembly is formed with an exhaust chamber 70 and an exhaust passage 61 communicating the exhaust chamber 70 and the exhaust chamber, an exhaust hole 47 communicating the compression chamber 91 and the exhaust chamber 70 is further opened on the static disc assembly, and the air flow in the compression chamber 91 enters the exhaust chamber 70 along the exhaust hole 47. An oil trap 80 is provided on the stationary disc assembly, the oil trap 80 serving to trap the refrigeration oil in the air flow entering the discharge passage 61 within the discharge chamber 70. A first oil hole 31 is formed in the movable disk 30, the movable disk 30 is provided with an assembling surface facing away from the static disk assembly, an assembling gap is formed between the assembling surface of the movable disk 30 and the main frame 20, and the position of the first oil hole 31 corresponds to the position of the assembling gap, so that the first oil hole 31 can be communicated with the assembling gap. The second oil hole 41 communicated with the exhaust chamber 70 is formed in the fixed disc assembly, and the first oil hole 31 can be intermittently aligned with the second oil hole 41 along with the movable disc 30 during the rotation of the movable disc 30, so that the first oil hole 31 can be intermittently communicated with the second oil hole 41. When the first oil hole 31 communicates with the second oil hole 41, the freezing oil trapped in the discharge chamber 70 may enter the assembly gap between the movable disk 30 and the main frame 20 through the second oil hole 41 and the first oil hole 31 in order. By introducing the refrigerant oil into the assembly gap between the movable disk 30 and the main frame 20, lubrication can be provided to the assembly surfaces of the main frame 20 and the movable disk 30, thereby reducing frictional loss between the movable disk 30 and the main frame 20. Because the movable plate 30 rotates relative to the stationary plate assembly when the compressor is running, the first oil hole 31 and the second oil hole 41 are intermittently communicated in the scheme, which means that when the movable plate 30 rotates relative to the stationary plate assembly, the first oil hole 31 rotates synchronously with the movable plate 30, and when the first oil hole 31 intermittently reaches the position where the second oil hole 41 is aligned, the first oil hole 31 and the second oil hole 41 are communicated.

Because the quiet dish subassembly can produce downward pressure to the movable disk 30, when the refrigeration oil gets into in the fit-up clearance between movable disk 30 and the main frame 20, the refrigeration oil can produce the ascending thrust of axial to the movable disk 30, utilizes the produced thrust of refrigeration oil can offset the partly decurrent effort that the movable disk 30 received, and then reduces the relative friction between movable disk 30 and the main frame 20. In some examples, the downward force generated by the compression chamber 91 and the stationary plate assembly on the movable plate 30 is N, and the upward thrust generated by the refrigerant oil on the movable plate 30 is M, where M is less than or equal to N, such that the force generated by the movable plate 30 on the main frame 20 is relatively smaller.

When the refrigeration oil is filled in the assembly gap between the movable disk 30 and the main rack 20, the oil seal can be carried out on the assembly gap between the main rack 20 and the movable disk 30 through the refrigeration oil, so that the pressure relief is avoided, and the service performance of the compressor is promoted.

In some examples, the static disc assembly includes a static disc 40 and a back pressure plate 60, wherein the static disc 40 cooperates with the dynamic disc to form a compression chamber 91, and the back pressure plate 60 is disposed on a side of the static disc 40 facing away from the dynamic disc.

Referring to fig. 2, with reference to fig. 3, 4 and 5, in some examples, a back pressure plate 60 is disposed on a side of the static plate 40 opposite to the dynamic plate 30, an exhaust chamber 70 is formed between the back pressure plate 60 and the static plate 40, a discharge channel 61 communicating with the exhaust chamber 70 is formed on the back pressure plate 60, the discharge channel 61 communicates with the exhaust chamber 70 and the exhaust chamber for discharging gas, and an exhaust hole 47 communicating with the exhaust chamber 70 and the compression chamber 91 is formed on the static plate 40. The discharge hole 47 may be a through hole penetrating the stationary disc body 40, and the position of the discharge hole 47 corresponds to the positions of the discharge chamber 70 and the compression chamber 91. When the gas enters the discharge chamber 70 from the compression chamber 91 through the discharge hole 47, the gas contains the refrigerant oil.

The back pressure plate 60, the floating plate 90, and the static disc 40 form a medium pressure chamber. In operation, the static disc 40 is pressed tightly against the movable disc 30 by the axial force generated by the gas in the intermediate pressure chamber, and the movable disc 30 is pressed tightly against the main frame 20 by the force of the high pressure gas in the compression chamber 91 and the force of the static disc 40. When the compressor runs, the motor drives the crankshaft 10 to rotate, a crank section of the crankshaft 10 is provided with a radial flexible eccentric sleeve, the eccentric sleeve drives the movable disc 30 to move, and the movable disc 30 does translational motion around the center of the crankshaft 10 with a fixed radius under the limitation of the cross slip ring. The refrigerant entering the compressor from the system is sucked into a crescent compression cavity 91 formed by the movable disc 30 and the fixed disc body 40, is compressed, enters a high-pressure exhaust cavity formed by an upper cover and a partition plate of the compressor through the exhaust hole 47 and the oil intercepting device 80 on the fixed disc body 40, and is exhausted through an exhaust pipe.

With continued reference to fig. 2, in some examples, an oil trap 80 is disposed on the back pressure plate 60 or the static disk 40, and the oil trap 80 is used to block oil from entering the exhaust channel from the exhaust chamber 70. The oil mixed with the gas introduced into the discharge chamber 70 from the discharge hole 47 is blocked inside the discharge chamber 70 by the oil trap 80, and the gas penetrates the oil trap 80 and enters the discharge passage 61.

Referring to fig. 2 in combination with fig. 3 to 7, in some examples, the main frame 20 is provided with an oil groove 21, the oil groove 21 has an opening, and the opening of the oil groove 21 faces the movable plate 30; a first oil hole 31 is formed in the movable plate 30 at a position corresponding to the oil groove 21, and oil in the first oil hole 31 can enter the oil groove 21; the static disc body 40 is also provided with a second oil hole 41 communicated with the exhaust chamber 70, and oil in the exhaust chamber 70 can enter the second oil hole 41; one end of the first oil hole 31 remote from the oil groove 21 intermittently communicates with the second oil hole 41.

The movable disc 30 has an assembly surface facing away from the stationary disc body 40, an assembly gap is formed between the assembly surface of the movable disc 30 and the main frame 20, when the compressor runs, the movable disc 30 rotates relative to the stationary disc body 40, the refrigerant oil entering the exhaust chamber 70 is blocked in the exhaust chamber 70 under the action of the oil blocking device 80, the refrigerant oil in the exhaust chamber 70 enters the first oil hole 31 through the second oil hole 41, and the first oil hole 31 intermittently communicates with the second oil hole 41 along with the rotation of the movable disc 30, so that the refrigerant oil enters the assembly gap between the movable disc 30 and the main frame 20, and the movable disc 30 and the main frame 20 are lubricated to reduce friction loss. Because the fluid in the fitting clearance between movable disk 30 and the main frame 20 can produce the ascending thrust of axial to movable disk 30, and then can reduce the pressure between movable disk 30 and the main frame 20, realize reducing the frictional force between movable disk 30 and the main frame 20 to alleviate wearing and tearing, reduce the friction consumption, improve the reliability of compressor. Because the movable plate 30 rotates relative to the static plate body 40, the first oil hole 31 intermittently aligns and communicates with the second oil hole 41, so that the freezing oil is intermittently supplemented and input into the assembly gap, the oil in the oil groove 21 keeps the preset oil amount, the thrust generated by the oil to the movable plate 30 can be kept within the preset range, and the movable plate 30 can be prevented from generating axial floating.

In order to prevent the floating of the movable board 30 and to prevent the pressure release of the assembly gap between the assembly surface of the movable board 30 and the main frame 20, in some examples, an oil groove 21 is formed on an end surface of the main frame 20 facing the assembly gap, and the first oil hole 31 corresponds to a position of the oil groove 21 so that the refrigerant oil in the first oil hole 31 can enter the oil groove 21. Through setting up oil groove 21, can make and keep certain frozen oil mass in the fit-up gap, form comparatively stable oil film, avoid appearing the pressure release. Because the frozen oil can generate the moving thrust to the movable disk 30, the movable disk 30 is subjected to the thrust of the main frame 20, and the movable disk 30 can generate the tendency of floating towards the direction of the static disk 40, and the mechanical friction between the movable disk 30 and the main frame 20 is reduced.

Further, in some examples, the product of the volume of the oil sump 21 and the pressure value of the oil within the oil sump 21 is M; the sum of the thrust of the compression cavity 91 and the static disc body 40 to the movable disc 30 is N, wherein M is less than or equal to N. The size of the oil sump 21 and the pressure of the frozen oil can be designed to ensure that the movable platen 30 does not float axially. Because the refrigeration oil in the cavity of the main frame 20 has certain pressure, the refrigeration oil can generate thrust acting on the back of the movable disc 30, so that the direct interaction force between the movable disc 30 and the main frame 20 can be reduced, the friction loss between the movable disc 30 and the main frame 20 is reduced, the friction and the abrasion are reduced, and because the refrigeration oil with pressure does not make the movable disc 30 float axially, the energy efficiency and the reliability of the compressor can be improved. In the manufacture of the main frame 20, the volume parameter of the oil sump 21 may be determined according to the parameters of the movable and

stationary disks

30 and 40 and the operating parameters of the compressor.

Because the axial force generated by the fluid in the oil groove 21 can counteract the acting force of the movable disc 30 from the static disc body 40 and the high-pressure gas in the compression cavity 91, the interaction force between the movable disc 30 and the main frame 20 can be reduced, the friction and the abrasion between the movable disc 30 and the main frame 20 are reduced, and the energy efficiency and the reliability of the compressor are improved.

In some examples, the oil interceptor 80 is installed on the stationary disc body 40 or the back pressure plate 60 and covers the discharge passage 61 of the back pressure plate 60 for intercepting oil to maximize the oil separating efficiency. In some examples, for ease of installation, an oil intercepting device 80 is installed in the discharge chamber 70 so that the frozen oil can be trapped in the discharge chamber 70 to facilitate entry of the frozen oil into the second oil hole 41. When the oil interceptor 80 is installed, the oil interceptor 80 may be fixedly coupled to the back pressure plate 60 by a fastening member such as a bolt. In order to improve the oil collecting efficiency, in some examples, the oil interceptor 80 has an arch shape, the oil interceptor 80 covers the air discharging hole 47 and arches in the direction of the discharging passage, and one end of the second oil hole 41 away from the first oil hole 31 is located inside the oil interceptor 80. The air flow enters the discharge chamber 70 from the discharge hole 47 and is blocked at the side of the oil interceptor 80 toward the second oil hole 41 by the oil interceptor 80, and the oil enters the first oil hole 31 along the second oil hole 41 and enters the oil groove 21. By adopting the arched oil intercepting device 80, the oil can flow towards the direction of the second oil hole 41 along one side surface of the oil intercepting device 80 facing the static disc body 40, so that the oil can be conveniently concentrated.

In some examples, a spool is disposed within the exhaust chamber 70 and is mounted to the exhaust port 47. The oil cut-off device 80 is annularly provided to the outer circumference of the spool such that the oil cut-off device 80 blocks the air flow passage between the discharge hole 47 and the discharge passage 61.

Referring to fig. 2, in some examples, the oil interceptor 80 is at least one of a filter screen or a porous filter element. The oil trap 80 may be a structure having an oil trapping and ventilating function formed by any one of a strainer and a porous filter element, or may be a combination of a strainer and a porous filter element.

Referring to fig. 3 and 5, in order to make the oil intensively enter the second oil hole 41, in some examples, an oil collecting groove 46 is formed on a side of the stationary plate 40 facing away from the movable plate 30, and the second oil hole 41 communicates with the oil collecting groove 46. The oil sump 46 may be an arc-shaped groove or other shaped groove recessed in the stationary plate body 40. In some examples, the sump 46 is an annular groove disposed coaxially with the static disc 40. Regarding the cross-sectional shape of the oil sumps 46, in some examples, the cross-sectional shape of the oil sumps 46 may be V-shaped, arc-shaped, or other shapes in a cross-section parallel to the axial direction of the stationary disk body 40. In some examples, the frozen oil collection trough on the back of the stationary disk 40 may be provided with a generally straight annular trough or with a sloping annular trough having a large angle of inclination on both sides, and the oil interceptor 80 may be mounted outside of the oil collection trough 46 or across the oil collection trough 46.

The oil sump 46 allows the refrigerant oil to flow toward the second oil hole 41 in a concentrated manner, and since the first oil hole 31 and the second oil hole 41 are intermittently connected, one end of the second oil hole 41 connected to the oil sump 46 is constantly filled with the liquid fluid. The fluid introduced into the pressure chamber of the main frame 20 is ensured to be liquid refrigeration oil to reduce leakage loss therebetween. Because the introduced fluid is in a liquid state and the leakage amount is controllable, the middle pressure cavity of the main frame 20 can be free from a sealing ring, the structure is simple, the cost is saved, meanwhile, the adjustable and optimized space of the structure of the middle pressure cavity of the main frame 20 is larger, and the middle pressure cavity can be arranged into an annular groove or an isolation groove formed by mutually connecting in series.

In some examples, the oil interceptor 80 is housed on the side of the movable platen 30 facing the air outlet 47, the oil interceptor 80 blocks the inlet end of the air outlet passage 61, and the oil interceptor 80 is at least partially housed in the oil sump 46 to allow more refrigerant oil to enter the oil sump 46. Specifically, the projection of the oil sump 46 in the axial direction falls at least partially into the projection of the oil interceptor 80 in the axial direction, i.e., the oil sump 46 is at least partially located within the oil interceptor 80 when the oil sump 46 and the oil interceptor 80 are projected in a cross-section perpendicular to the axial direction of the stationary disk assembly.

In some examples, the oil interceptor 80 has an arch shape, the oil interceptor 80 covers the air outlet 47 and arches toward the direction of the discharge passage, and one end of the second oil hole 41, which is far away from the first oil hole 31, is located inside the oil interceptor 80 to intercept the freezing oil in the air flow. The refrigerant oil is guided to the second oil hole 41 by the arched oil trap 80 so that the refrigerant oil can be concentrated more toward the second oil hole 41.

Referring to fig. 7, in some examples, the oil groove 21 is an arc-shaped groove to enlarge the lubrication surfaces of the oil groove 21 and the movable plate 30, so as to achieve better lubrication effect and reduce the mechanical friction between the movable plate 30 and the main frame 20. Further, in some examples, the number of the oil grooves 21 is at least two, the adjacent oil grooves 21 are annularly distributed around the axis of the main frame 20, the plurality of oil grooves 21 cooperate to generate an acting force to the main frame 20 in the direction of the stationary disc body 40, and the plurality of annularly distributed oil grooves 21 generate a relatively uniform acting force to the main frame 20, so that the main frame 20 can be stressed relatively uniformly. Because the movable disk 30 is rotated relatively under the drive of bent axle 10, movable disk 30 can communicate each other with a plurality of oil grooves 21 all the time, and then makes fluid can get into in a plurality of oil grooves 21. Further, a connecting groove 22 is formed in the main frame 20, and the adjacent oil grooves 21 are communicated through the connecting groove 22. In the axial cross section parallel to the main frame 20, the width of the connecting groove 22 is smaller than the width of the oil groove 21, so that an oil film is formed between the main frame 20 and the movable disk 30, the pressure release is avoided, and the lubricating performance can be effectively improved.

Referring to fig. 4, in some examples, an end of the second oil hole 41 remote from the discharge chamber 70 is disposed near the suction port 50 of the compression chamber 91. The second oil hole 41 has a rear port disposed toward the movable disk 30, the rear port of the second oil hole 41 is disposed adjacent to the suction port 50 of the compression chamber 91, and the high-pressure refrigerant oil passes through the second oil hole 41, flows through the vicinity of the suction port 50, is cooled, reaches the rear port of the second oil hole 41, passes through the first oil hole 31, and enters the oil groove 21. The introduced pressurized refrigerant oil provides axial thrust to the back of the movable disc 30, that is, thrust pushing the movable disc 30 towards the static disc 40, so as to reduce pressure between the main frame 20 and the movable disc 30, reduce friction, reduce abrasion, reduce friction power consumption and improve reliability of the compressor.

In some examples, the first oil hole 31 has a front port disposed toward the stationary disc assembly; the second oil hole 41 has a rear port disposed toward the movable disk 30; when one end of the first oil hole 31 far away from the oil groove 21 is communicated with the second oil hole 41, the front port of the first oil hole 31 is partially overlapped with the rear port of the second oil hole 41 to control the oil amount entering the first oil hole 31, so that the acting force of the movable plate 30 in the direction of the static plate body 40 is greater than the acting force of the static plate assembly and the floating plate 90 on the movable plate 30 when the oil amount entering the oil groove 21 is too large.

Further, in some examples, the effective flow area of the front port of the first oil hole 31 is smaller than the effective flow area of the rear port of the second oil hole 41, and since the first oil hole 31 and the second oil hole 41 are intermittently communicated, by making the effective flow area of the front port of the first oil hole 31 smaller than the effective flow area of the rear port of the second oil hole 41, the frozen oil can be intermittently input into the second oil hole 41, and the problem of excessive frictional wear caused by the excessively low oil amount in the oil groove 21 can be avoided.

Referring to fig. 6, in some examples, the first oil hole 31 includes a first oil passing hole 32 and a first transverse hole 33, the first oil passing hole 32 and the first transverse hole 33 open on the movable plate 30, respectively, and the first oil passing hole 32 extends to an end surface of the movable plate 30 on a side facing the stationary plate body 40 and intermittently communicates with the second oil hole 41; the first oil passing hole 32 forms the front port of the first oil hole 31 described in the above example; the first oil passing hole 32 communicates with the oil groove 21 through the first transverse hole 33. The first oil holes 31 may be arranged in parallel with the axial direction of the movable plate 30, and the first transverse hole 33 is used to intermittently communicate the first oil holes 31 with the second oil holes 41. In some examples, one end of the first transverse hole 33 intermittently communicates with the second oil hole 41, the other end of the first oil hole 31 extends to the outer peripheral wall of the movable plate 30 to facilitate hole opening, and one end of the first oil passing hole 32 remote from the stationary plate body 40 communicates with the first transverse hole 33. A stopper 35 is provided at an end of the first lateral hole 33 adjacent to the outer peripheral wall of the movable plate 30 to prevent oil from leaking toward the outer peripheral wall of the movable plate 30.

On the basis of the above example, in some examples, the first oil hole 31 further includes a second oil passing hole 34 opened in the movable plate 30, and the first transverse hole 33 communicates with the oil groove 21 through the second oil passing hole 34. The second oil passing holes 34 may be holes parallel to the axial direction of the movable platen 30, and the second oil passing holes 34 correspond to the positions of the oil grooves 21. The first transverse hole 33 is a hole perpendicular to the axial direction of the movable platen 30 to facilitate boring and machining. When the first oil hole 31 is communicated with the second oil hole 41, the refrigerant oil in the discharge chamber 70 enters the first oil passing hole 32 through the second oil hole 41 and enters the second oil passing hole 34 along the first transverse hole 33, and the refrigerant oil enters the oil groove 21 along the second oil passing hole 34, so that a certain amount of refrigerant oil is stored in the oil groove 21, and the performance of the compressor is improved while the lubricating effect is achieved.

Referring to fig. 5, in some examples, the second oil hole 41 includes a second transverse hole 43 and a third oil passing hole 42 opened in the static disc assembly, wherein the second transverse hole 43 communicates with the discharge chamber 70, so that the refrigerant oil in the discharge chamber 70 can enter the third oil passing hole 42. The second lateral hole 43 intermittently communicates with the first oil holes 31 through the third oil passing hole 42. The third oil passing hole 42 may be disposed parallel to an axial direction of the stationary plate assembly. The freezing oil enters the third oil passing hole 42 through the second transverse hole 43 and enters the first oil hole 31 when one end of the third oil passing hole 42 remote from the second transverse hole 43 is aligned with the first oil hole 31. The end of the third oil passing hole 42 remote from the second transverse hole 43 forms the outlet end of the second oil hole 41 described in the above examples. When the static disc assembly is manufactured, one end of the second transverse hole 43 can be communicated with the outer peripheral wall of the static disc assembly, and the other end is communicated with the exhaust chamber 70. When the static disc assembly includes the back pressure plate 60 and the static disc body 40, the second transverse hole 43 and the third oil passing hole 42 of the second oil hole 41 are opened in the static disc body 40.

Further, in the above example, the second oil hole 41 further includes a fourth oil passing hole 44 opened in the fixed disk assembly, and the second transverse hole 43 communicates with the discharge chamber 70 through the fourth oil passing hole 44. The fourth oil passing hole 44 may be disposed in parallel to the axial direction of the stationary disc assembly, and the second transverse hole 43 is disposed perpendicular to the axial direction of the stationary disc assembly to facilitate the hole opening. When the second transverse hole 43 and the third oil passing hole 42 of the second oil hole 41 are both opened in the stationary plate body 40, the fourth oil passing hole 44 is opened in the stationary plate body 40.

Referring to fig. 1 and 5, in order to conveniently control the oil amount, in some examples, the second oil hole 41 includes a second transverse hole 43 and a third oil passing hole 42 opened in the static plate body 40, wherein the second transverse hole 43 communicates with the discharge chamber 70, so that the refrigerant oil in the discharge chamber 70 can enter the third oil passing hole 42. The second lateral hole 43 intermittently communicates with the first oil holes 31 through the third oil passing hole 42. One end of the second transverse hole 43 far away from the exhaust chamber 70 is communicated with the outer annular wall of the static disc body 40; the static disc body 40 is provided with a restrictor 45, and the restrictor 45 is embedded in the second transverse hole 43. Through set up the throttle pin in the second transverse hole 43 of quiet disk 40, can set up different flow resistance schemes according to the model of difference to movable disk 30 still can closely cooperate with main frame 20 under the realization full operating mode. In order to ensure that the introduced fluid is the refrigeration oil, an intermittent drainage scheme is used to cause the inlet end of the second oil hole 41 of the oil collecting tank 46 to be filled with the liquid fluid at all times, so that the fluid introduced into the oil groove 21 of the main frame 20 is ensured to be the liquid refrigeration oil, and the leakage loss between the two is reduced; because the introduced fluid is in a liquid state, the leakage amount is controllable.

In some examples, the first oil hole 31 includes a first oil passing hole 32, a first transverse hole 33 and a second oil passing hole 34, the first oil passing hole 32, the first transverse hole 33 and the second oil passing hole 34 are respectively opened on the movable plate 30, the first oil passing hole 32 extends to one side end surface of the movable plate 30 facing the fixed plate body 40, when the first oil hole 31 is communicated with the second oil hole 41, the frozen oil in the exhaust chamber 70 enters the second transverse hole 43 through the fourth oil passing hole 44, enters the first oil passing hole 32 through the third oil passing hole 42, and enters the second oil passing hole 34 along the first transverse hole 33, and the frozen oil enters the oil groove 21 along the second oil passing hole 34, so that a certain amount of frozen oil is stored in the oil groove 21, thereby playing a lubricating role and simultaneously improving the performance of the compressor.

The invention also provides an example of a refrigeration device on the basis of the scroll compressor, and the refrigeration device comprises the scroll compressor in any example. It should be noted that, because the example of the refrigeration apparatus of the present invention is based on the example of the scroll compressor, the example of the refrigeration apparatus of the present invention includes all technical solutions of all the examples of the scroll compressor, and the technical effects achieved are also completely the same, and are not described again here.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a scroll compressor, includes main frame, driving disk and quiet dish subassembly, the driving disk rotationally install in the main frame, the driving disk with quiet dish subassembly cooperation forms compression chamber, its characterized in that, scroll compressor still includes:

the oil intercepting device is arranged on the static disc assembly; the static disc assembly is provided with an exhaust chamber, an exhaust hole communicated with the exhaust chamber and the compression cavity, and an exhaust channel communicated with the exhaust chamber; the oil intercepting device is used for preventing oil from entering the discharge passage from the exhaust chamber;

the movable disc is provided with an assembling surface which is back to the static disc assembly, and an assembling gap is formed between the assembling surface and the main frame; a first oil hole communicated with the assembly gap is formed in the movable disc; the static disc assembly is also provided with a second oil hole communicated with the exhaust chamber; one end, far away from the assembly gap, of the first oil hole rotates along with the movable disc and is intermittently communicated with the second oil hole.

2. The scroll compressor according to claim 1, wherein an end surface of the main frame facing the fitting gap is opened with an oil groove communicating with the fitting gap, and the first oil hole communicates with the oil groove when the first oil hole rotates with the movable platen.

3. The scroll compressor of claim 2, wherein the oil sump is an arcuate sump.

4. The scroll compressor according to claim 3, wherein the number of the oil grooves is at least two, and adjacent oil grooves are annularly distributed centering on an axis of the main frame.

5. The scroll compressor according to claim 4, wherein the main frame is formed with a coupling groove, and adjacent oil grooves are communicated through the coupling groove.

6. The scroll compressor of claim 2,

the product of the volume of the oil groove and the pressure value of the oil in the oil groove is M;

7. The scroll compressor of claim 2, wherein the first oil hole includes:

8. The scroll compressor according to claim 1, wherein the stationary disc assembly has a suction port communicating with the compression chamber, and an end of the second oil hole remote from the discharge chamber is disposed near the suction port of the compression chamber.

9. The scroll compressor of claim 1, wherein the first oil hole has a front port disposed toward the fixed disc assembly; the second oil hole has a rear port disposed toward the movable disk; when one end of the first oil hole, which is far away from the assembly gap, is communicated with the second oil hole, the front port of the first oil hole is at least partially overlapped with the rear port of the second oil hole.

10. The scroll compressor of claim 9, wherein an effective flow area of a front port of the first oil hole is smaller than an effective flow area of a rear port of the second oil hole.

11. The scroll compressor of any one of claims 1 to 10, wherein the second oil hole includes:

the second transverse hole is formed in the static disc assembly;

12. The scroll compressor according to claim 11, wherein an end of the second transverse hole remote from the discharge plenum communicates with an outer annular wall of the stationary disc assembly; and the static disc assembly is provided with a throttler which is embedded in the second transverse hole.

13. The scroll compressor according to any one of claims 1 to 10, wherein the stationary disc assembly includes a stationary disc body and a back pressure plate, the stationary disc body and the movable disc cooperating to form the compression chamber; the back pressure plate is arranged on one side of the static disc body, which is back to the dynamic disc, and the exhaust chamber is formed between the back pressure plate and the static disc body; the back pressure plate is provided with the discharge channel; the static disc body is provided with the exhaust hole and the second oil hole.

14. The scroll compressor according to claim 13, wherein an oil sump is formed at a side of the fixed plate body facing away from the movable plate, and the second oil hole communicates with the oil sump.

15. The scroll compressor according to claim 14 wherein said oil interceptor is housed on a side of said rotor plate facing said discharge passage; the projection of the oil collecting groove in the axial direction at least partially falls into the projection of the oil intercepting device in the axial direction.

16. The scroll compressor according to claim 13, wherein said oil interceptor is fixedly mounted to said discharge plenum.

17. The scroll compressor according to claim 16, wherein the oil interceptor has an arcuate shape, the oil interceptor is covered on the discharge hole and is arcuate in a direction of the discharge passage, and an end of the second oil hole remote from the first oil hole is located inside the oil interceptor.

18. The scroll compressor of any one of claims 1 to 10, wherein the oil interceptor is at least one of a filter screen or a porous filter element.

19. A refrigeration apparatus comprising the scroll compressor of any one of claims 1 to 18.