CN220667811U - Scroll compressor and refrigeration equipment - Google Patents

Abstract

The utility model discloses a scroll compressor and refrigeration equipment. The vortex compressor comprises a fixed vortex disc and an movable vortex disc, and a first oil groove is formed in the end face of the fixed vortex disc; the movable vortex plate is rotatably connected with the fixed vortex plate and is matched with the fixed vortex plate to define a compression cavity; the movable scroll is provided with a first oil supply channel and a second oil supply channel, the first oil supply channel is provided with a first oil outlet on the end face of the movable scroll, and the first oil outlet is periodically communicated with the first oil groove; the second oil supply channel is provided with a second oil outlet on the end surface of the movable scroll, and the second oil outlet is periodically communicated with the first oil groove; the second oil outlet is positioned on one side of the end face of the movable scroll, which is far away from the first oil outlet. According to the technical scheme, the lubricating capability between the movable vortex plate and the fixed vortex plate is improved, the abrasion between the movable vortex plate and the fixed vortex plate is reduced, and the reliability of the compressor is improved.

Description

Scroll compressor and refrigeration equipment

Technical Field

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

Background

The scroll compressor comprises a fixed scroll, an movable scroll and a crankshaft, wherein the movable scroll is arranged on the crankshaft, the movable scroll is assembled with the fixed scroll in a matched manner and is movable relative to the fixed scroll, and when the scroll compressor works, the crankshaft moves eccentrically to drive the movable scroll to move, so that refrigerant can continuously run in a compression cavity defined by the fixed scroll and the movable scroll in a matched manner, and the processes of air suction, compression and exhaust of the compressor are realized.

In the related art, a high-pressure oil groove is usually formed in the end face of the fixed scroll, an oil supply channel on the movable scroll supplies oil for the high-pressure oil groove of the fixed scroll, but lubricating oil from an outlet of the oil supply channel of the driven disk can reach the tail part of the oil groove only through a longer passage, so that the lubricating effect is greatly reduced, the local lubrication of the scroll is insufficient, and the abrasion problem occurs.

Disclosure of Invention

The utility model mainly aims to provide a scroll compressor, which aims to improve the lubrication effect of a scroll and reduce abrasion.

In order to achieve the above object, the present utility model provides a scroll compressor comprising:

the fixed scroll comprises a fixed scroll body, a fixed scroll and a fixed scroll, wherein a first oil groove is formed in the end face of the fixed scroll body; and

the movable vortex plate is rotatably connected with the fixed vortex plate and is matched with the fixed vortex plate to define a compression cavity;

the movable scroll is provided with a first oil supply channel and a second oil supply channel, the first oil supply channel is provided with a first oil outlet on the end face of the movable scroll, and the first oil outlet is periodically communicated with the first oil groove; the second oil supply channel is provided with a second oil outlet on the end face of the movable scroll, and the second oil outlet is periodically communicated with the first oil groove;

the second oil outlet is positioned on one side, away from the first oil outlet, of the end face of the movable scroll.

In an embodiment of the present application, the scroll compressor further includes a bracket disposed below the movable scroll, and a high-pressure oil storage cavity is formed between the bracket and the movable scroll;

the first oil inlet of the first oil supply channel is communicated with the high-pressure oil storage cavity, and the second oil inlet of the second oil supply channel is periodically communicated with the high-pressure oil storage cavity.

In an embodiment of the present application, a first state in which the second oil outlet is communicated with the first oil groove and a second state in which the second oil outlet is not communicated with the first oil groove are defined in the moving process of the movable scroll;

in the first state, the second oil inlet is communicated with the high-pressure oil storage cavity;

and in the second state, the second oil inlet is not communicated with the high-pressure oil storage cavity.

In an embodiment of the present application, the movable scroll includes a movable disk body, a movable scroll tooth disposed on the movable disk body, and an eccentric bearing portion for cooperation with a crankshaft, where the eccentric bearing portion is movably assembled in the high-pressure oil storage cavity;

the second oil supply channel is arranged on the movable disc body, the second oil inlet and the second oil outlet are respectively positioned on the end surfaces of the two sides of the movable disc body, and the second oil inlet is positioned on the outer side of the eccentric bearing part on the projection of the end surface of the movable disc body; and in the second state, the second oil inlet is blocked by the bracket.

In an embodiment of the present application, the first oil supply channel is disposed on the movable disc body, the first oil inlet and the first oil outlet are respectively located on two side end surfaces of the movable disc body, and the first oil inlet is communicated with an inner cavity of the eccentric bearing portion.

In an embodiment of the present application, the second oil supply channel and the first oil supply channel are respectively disposed at opposite sides of the eccentric bearing portion.

In an embodiment of the present application, the scroll compressor further includes a casing, a crankshaft disposed in the casing and connected to the eccentric bearing portion, an oil pool is disposed at a bottom of the casing, an oil suction channel communicating with the oil pool is disposed in the crankshaft, and an outlet end of the oil suction channel communicates with the high-pressure oil storage cavity.

In an embodiment of the present application, a back pressure chamber is further formed between the support and the movable scroll, and the back pressure chamber is disposed at the periphery of the high-pressure oil storage chamber; the support is provided with an annular groove, a sealing piece used for isolating the back pressure cavity and the high-pressure oil storage cavity is arranged in the annular groove, and the sealing piece is clamped between the movable vortex plate and the support.

In an embodiment of the present application, the second oil outlet and the first oil outlet are respectively disposed at two radial sides of an end surface of the movable scroll.

In an embodiment of the present application, the movable scroll is provided with two second oil supply channels, and second oil outlets of the two second oil supply channels and the first oil outlet are distributed on an end face of the movable scroll at intervals.

In an embodiment of the present application, a diameter dimension of the second oil outlet is the same as a groove width dimension of the first oil groove.

In an embodiment of the present application, the fixed scroll has a fixed scroll wrap, and the first oil groove surrounds the periphery of the fixed scroll wrap in a ring shape;

the end face of the fixed scroll is also provided with a second oil groove, and the second oil groove surrounds the periphery of the first oil groove; the first oil groove and the second oil groove are respectively communicated with the first oil outlet periodically.

In order to achieve the above object, the present utility model also provides a refrigeration apparatus including the above scroll compressor.

According to the technical scheme, in the scroll compressor, the fixed scroll and the movable scroll are matched to define the compression cavity, the end face of the fixed scroll is provided with the first oil groove, the movable scroll is provided with the first oil supply channel and the second oil supply channel, the first oil outlet of the first oil supply channel is periodically communicated with the first oil groove, the second oil outlet of the second oil supply channel is arranged on one side of the end face of the movable scroll away from the first oil outlet, and the second oil outlet is periodically communicated with the first oil groove, so that when the movable scroll moves, the first oil outlet and the second oil outlet are respectively and periodically communicated with different positions of the first oil groove, oil can be supplied from different positions of the first oil groove, oil quantity distribution can be more uniform while oil quantity distribution is improved, lubricating capability between the movable scroll and the end face of the fixed scroll is improved, abrasion between the first oil outlet and the first oil groove is reduced, and reliability of the compressor is improved.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.

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

FIG. 2 is a schematic view of an orbiting scroll in accordance with an embodiment of the present utility model;

FIG. 3 is a full cross-sectional view of the embodiment of FIG. 2;

FIG. 4 is a schematic view of a fixed scroll in an embodiment of the present utility model;

FIG. 5 is a schematic view of an embodiment of the present utility model in which an orbiting scroll is engaged with a fixed scroll;

FIG. 6 is a schematic view of an alternative embodiment of the present utility model wherein an orbiting scroll is engaged with a non-orbiting scroll;

FIG. 7 is a schematic view of an alternative embodiment of the present utility model wherein an orbiting scroll is engaged with a non-orbiting scroll;

FIG. 8 is a schematic view of an alternative embodiment of the present utility model wherein the orbiting scroll is engaged with the fixed scroll.

Reference numerals illustrate:

reference numerals	Name of the name	Reference numerals	Name of the name
				100	Fixed vortex plate	202a	Second oil outlet
101	First oil groove	202b	Second oil inlet
				102	Second oil groove	300	Support frame
110	Fixed vortex tooth	400	Sealing element
				200	Movable vortex plate	A	High-pressure oil storage cavity
210	Movable disc body	B	Back pressure cavity
				220	Movable vortex tooth	500	Casing of machine
230	Eccentric bearing part	510	Oil pool
				201	First oil supply channel	600	Crankshaft
201a	First oil outlet	610	Oil suction channel
				201b	First oil inlet	700	Throttling element
202	Second oil supply channel

The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that, if directional indications (such as up, down, left, right, front, and rear … …) are included in the embodiments of the present utility model, the directional indications are merely used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.

Meanwhile, the meaning of "and/or" and/or "appearing throughout the text is to include three schemes, taking" a and/or B "as an example, including a scheme, or B scheme, or a scheme that a and B satisfy simultaneously.

In addition, if there is a description of "first", "second", etc. in the embodiments of the present utility model, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.

The utility model provides a scroll compressor, which aims to increase oil supply quantity, avoid the condition of uneven oil distribution on the end surface, improve lubricating effect, reduce abrasion and improve the performance of the compressor by arranging more than one oil outlet on a movable scroll to supply oil to different parts of a first oil groove on a fixed scroll. It will be appreciated that the present scroll compressor may be adapted to different types of refrigeration equipment, such as refrigerators, air conditioners, cold chain vehicles, etc., and is not limited to a particular type of equipment. The structure of the scroll compressor will be described.

In an embodiment of the present utility model, as shown in fig. 1 to 5, the scroll compressor includes a fixed scroll 100 and an orbiting scroll 200.

A first oil groove 101 is arranged on the end surface of the fixed scroll 100; the movable scroll 200 is rotatably connected to the fixed scroll 100 and cooperates with the fixed scroll 100 to define a compression chamber; the movable scroll 200 is provided with a first oil supply channel 201 and a second oil supply channel 202, the first oil supply channel 201 is provided with a first oil outlet 201a on the end surface of the movable scroll 200, and the first oil outlet 201a is periodically communicated with the first oil groove 101; the second oil supply passage 202 is provided with a second oil outlet 202a on the end face of the orbiting scroll 200, the second oil outlet 202a being periodically communicated with the first oil groove 101; wherein the second oil outlet 202a is located on the side of the end surface of the orbiting scroll 200 remote from the first oil outlet 201 a.

It can be appreciated that, in the scroll compressor, the movable scroll 200 is connected to the crankshaft 600, the movable scroll 200 is driven to rotate relative to the fixed scroll 100 by the rotation of the crankshaft 600, and during the rotation of the movable scroll 200, the gas in the compression cavity is compressed by the inter-engagement of the movable scroll 220 of the movable scroll 200 and the fixed scroll 110 of the fixed scroll 100 and then discharged from the gas outlet, wherein the inter-engagement structure between the movable scroll 220 and the fixed scroll 110 can refer to the inter-engagement structure in the conventional scroll compressor, and will not be repeated herein. In the process of moving the movable scroll 200 relative to the fixed scroll 100, the end face of the fixed scroll 100 is matched with the end face of the movable scroll 200, the end face of the fixed scroll 100 is provided with a first oil groove 101, the movable scroll 200 is provided with a first oil supply channel 201, a first oil outlet 201a of the first oil supply channel 201 is formed in the end face of the movable scroll 200, and in the process of moving the movable scroll 200, the first oil outlet 201a can be driven to be periodically communicated with the first oil groove 101 to realize oil supply in the first oil groove 101, so that lubrication between the end face of the fixed scroll 100 and the end face of the movable scroll 200 is achieved. However, since the first oil groove 101 only has the first oil outlet 201a for oil supply, there is a problem that partial lubrication is insufficient and even abrasion occurs due to insufficient oil supply, based on this, the movable scroll 200 of this embodiment is further provided with the second oil supply channel 202, the second oil supply channel 202 is provided with the second oil outlet 202a which can be periodically communicated with the first oil groove 101 on the end face of the movable scroll 200, and the second oil outlet 202a is far away from the first oil outlet 201a, when the movable scroll 200 moves, the first oil outlet 201a and the second oil outlet 202a can be periodically communicated with different positions of the first oil groove 101 respectively, so that oil can be supplied from different positions of the first oil groove 101, the oil distribution can be more uniform while the oil supply is improved, the lubrication capability between the movable scroll 200 and the end face of the fixed scroll 100 is improved, and abrasion between the two is reduced.

The second oil outlet 202a is located on one side of the end surface of the movable scroll 200 away from the first oil outlet 201a, and it can be understood that the position where the first oil outlet 101 is communicated with the first oil outlet 201a is the area where the oil amount in the first oil groove 101 is most sufficient, the oil entering the first oil groove 101 from the first oil outlet 201a flows to other areas of the first oil groove 101 along the path of the first oil groove 101, and the second oil outlet 202a is located away from the first oil outlet 201a, so that the second oil outlet 202a is periodically communicated with other areas of the first oil groove 101, the oil supply function to other areas of the first oil groove 101 is realized, and the sufficient and more uniform oil amount is ensured. In practical application, the specific position of the second oil outlet 202a may be determined according to practical situations, and the specific position may be related to factors such as the extension length of the first oil groove 101 and the position of the first oil outlet 201a, for example, the second oil outlet 202a and the first oil outlet 201a may be respectively disposed on two diametrically opposite sides of the orbiting scroll 200, and at this time, the present utility model may be applicable to occasions where the first oil groove 101 is an annular groove or a major arc groove, so that both the first oil outlet 201a and the second oil outlet 202a can be smoothly intermittently communicated with the first oil groove 101. Alternatively, the second oil outlet 202a may be disposed in an acute angle region or an obtuse angle region of the first oil outlet 201a with respect to the central axis of the orbiting scroll 200, or the like, as long as it is ensured that the second oil outlet 202a and the first oil outlet 201a supply oil to different positions of the first oil groove 101, respectively.

As an example, the second oil outlet 202a and the first oil outlet 201a are respectively provided at both sides in the radial direction of the end surface of the orbiting scroll 200. Thus, the distance between the first oil outlet 201a and the second oil outlet 202a can be increased, so that oil can be better supplied to the area with insufficient lubrication of the first oil groove 101, and the lubrication effect is improved.

In practical application, the first oil supply channel 201 supplies oil to the first oil groove 101, and the oil in the oil pool 510 of the casing 500 can be pumped to the oil storage cavity of the bracket 300 through the oil suction channel 610 of the crankshaft 600, and then the oil is delivered to the first oil groove 101 through the first oil supply channel 201. Accordingly, the second oil supply channel 202 supplies oil to the first oil groove 101, or may supply oil from the oil storage cavity of the bracket 300 to the first oil groove 101 through the second oil outlet 202 a. Alternatively, the structure of the first oil supply passage 201 and the structure of the second oil supply passage 202 may be the same or different, and the oil passages of both may be the same or different. The specific structure of the two may not be limited herein.

As an example, the groove cross-sectional shape of the first oil groove 101 may be according to practical situations, such as circular arc, U-shape, square, triangle, or other special shape.

According to the technical scheme of the scroll compressor, the fixed scroll 100 and the movable scroll 200 are matched to define the compression cavity, the end face of the fixed scroll 100 is provided with the first oil groove 101, the movable scroll 200 is provided with the first oil supply channel 201 and the second oil supply channel 202, the first oil outlet 201a of the first oil supply channel 201 is periodically communicated with the first oil groove 101, the second oil outlet 202a of the second oil supply channel 202 is arranged on one side, far away from the first oil outlet 201a, of the end face of the movable scroll 200, and the second oil outlet 202a is periodically communicated with the first oil groove 101, so that when the movable scroll 200 moves, the first oil outlet 201a and the second oil outlet 202a can be respectively periodically communicated with different positions of the first oil groove 101, oil can be supplied from different positions of the first oil groove 101, oil supply is improved, meanwhile, the oil supply distribution is more uniform, the lubricating capacity between the movable scroll 200 and the end face of the fixed scroll 100 is improved, abrasion between the two is reduced, and the reliability of the compressor is improved.

In an embodiment of the present application, referring to fig. 1 and fig. 5 to 8, the scroll compressor further includes a bracket 300 disposed below the movable scroll 200, and a high-pressure oil storage chamber a is formed between the bracket 300 and the movable scroll 200; the first oil inlet 201b of the first oil supply passage 201 communicates with the high-pressure oil storage chamber a, and the second oil inlet 202b of the second oil supply passage 202 periodically communicates with the high-pressure oil storage chamber a.

In the present embodiment, the bracket 300 serves to support and mount the movable scroll 200 and the fixed scroll 100. It can be understood that the movable scroll 200 and the fixed scroll 100 cooperate to define a compression chamber, the low-temperature low-pressure refrigerant enters the compression chamber from the air inlet to be compressed to high-temperature high-pressure refrigerant and then discharged from the air outlet, and in the compression process, the fixed scroll 100 and the movable scroll 200 can receive the separation pressure of the refrigerant acting on the fixed scroll 100 and the movable scroll 200, in order to avoid the separation of the movable scroll 100 from the fixed scroll 100, a high-pressure chamber can be arranged between the bracket 300 and the movable scroll 200 to apply an upward acting force on the movable scroll 100, so as to ensure the reliability of the cooperation of the movable scroll 100 and the fixed scroll 100. In practical application, due to the entrainment of the gas and the pumping function of the crankshaft 600, a certain amount of lubricating oil is stored in the high-pressure chamber, so that the high-pressure oil storage chamber a is formed. By communicating the first oil inlet 201b of the first oil supply channel 201 with the high-pressure oil storage cavity a, under the action of high pressure, the oil in the high-pressure oil storage cavity a can be smoothly conveyed to the first oil outlet 201a through the first oil supply channel 201 and supply oil to the first oil groove 101. Correspondingly, the second oil inlet 202b of the second oil supply channel 202 is communicated with the high-pressure oil storage cavity a, and under the action of high pressure, the oil in the high-pressure oil storage cavity a can be smoothly conveyed to the second oil outlet 202a through the second oil supply channel 202 and is supplied to the first oil groove 101.

Illustratively, the second oil inlet 202b of the second oil supply passage 202 is in periodic communication with the high pressure oil reservoir chamber a. It will be appreciated that when the orbiting scroll 200 moves, the second oil outlet 202a is intermittently connected to the first oil groove 101, and since the first oil inlet 201b is always in communication with the high-pressure oil storage chamber a, the first oil outlet 201a can supply oil to the oil grooves (high-pressure oil groove and medium-pressure oil groove) on the fixed scroll 100, and the second oil inlet 202b of the second oil supply channel 202 is intermittently connected to the high-pressure oil storage chamber a, so that the second oil supply channel 202 can smoothly supply oil only when the second oil outlet 202a is in communication with the first oil groove 101, and oil is not supplied when the second oil outlet 202a is not in communication with the first oil groove 101, thereby avoiding the high-pressure region and the medium-pressure region from being in communication with each other.

Specifically, the orbiting scroll 200 is defined to have a first state in which the second oil outlet 202a communicates with the first oil sump 101 and a second state in which the second oil outlet 202a does not communicate with the first oil sump 101 during movement;

in the first state, the second oil inlet 202b is communicated with the high-pressure oil storage cavity A;

in the second state, the second oil inlet 202b is not in communication with the high-pressure oil reservoir chamber a.

Referring to fig. 1 and fig. 5 to 8, the periodic communication between the second oil inlet 202b and the high-pressure oil storage chamber a is illustrated in this embodiment. It will be appreciated that during operation of the compressor, the orbiting scroll 200 periodically moves relative to the fixed scroll 100, and during one movement cycle of the orbiting scroll 200, there may be a state in which the second oil outlet 202a is connected or disconnected from the first oil groove 101, the fixed scroll 100 has a medium pressure oil groove and a high pressure oil groove according to the refrigerant pressure distribution, the first oil groove 101 is a high pressure oil groove on the end surface of the fixed scroll 100, the second oil groove 102 is a medium pressure oil groove on the end surface of the fixed scroll 100, and the second oil groove 102 is disposed on the outer circumference of the first oil groove 101. The second oil outlet 202a is in communication with the first oil sump 101 in the first state, and the second oil outlet 202a is not in communication with the first oil sump 101 in the second state.

When in the first state, referring to fig. 5, the second oil outlet 202a is communicated with the first oil groove 101, in order to ensure that the second oil outlet 202a supplies oil to the first oil groove 101, the second oil inlet 202b is communicated with the high-pressure oil storage cavity a, so that the oil in the high-pressure oil storage cavity a can be smoothly conveyed into the first oil groove 101 through the second oil supply channel 202, and the oil supply function to the first oil groove 101 is realized.

In the second state, referring to fig. 6 to 8, the second oil outlet 202a is not communicated with the first oil groove 101, the second oil outlet 202a is in the medium pressure region, in order to avoid that the gas leakage between the high pressure region and the medium pressure region affects the reliability of the fit between the fixed scroll 100 and the movable scroll 200, the second oil inlet 202b is not communicated with the high pressure oil storage cavity a, so that the oil in the high pressure oil storage cavity a cannot enter the second oil supply channel 202, thereby avoiding the communication between the medium pressure region and the high pressure region, and ensuring the stability of pressure distribution.

In one embodiment, referring to fig. 1 and 5 to 8, the orbiting scroll 200 includes an orbiting scroll body 210, an orbiting scroll wrap 220 provided on the orbiting scroll body 210, and an eccentric bearing portion 230 for cooperation with a crankshaft 600, the eccentric bearing portion 230 being movably fitted in a high-pressure oil storage chamber a; the second oil supply channel 202 is arranged on the movable disc body 210, the second oil inlet 202b and the second oil outlet 202a are respectively arranged on the end surfaces of the two sides of the movable disc body 210, and the second oil inlet 202b is arranged on the outer side of the eccentric bearing part 230 on the projection of the end surface of the movable disc body 210; in the second state, the second oil inlet 202b is blocked by the bracket 300.

The present embodiment exemplifies the structural relationship of the second oil supply passage 202 on the movable scroll 200, and the movable scroll 220 is configured to intermesh with the fixed scroll wrap 110 of the fixed scroll 100 to define a compression chamber. The eccentric bearing portion 230 is movably fitted in the high pressure oil storage chamber a to be engaged with the eccentric portion of the crankshaft 600, so that the orbiting scroll 200 can be driven to move in parallel with respect to the fixed scroll 100 when the crankshaft 600 rotates. The second oil supply channel 202 is disposed in the movable disk 210, the second oil inlet 202b is disposed at an end of the movable disk 210 where the eccentric bearing portion 230 is disposed, and the second oil outlet 202a is disposed at an end of the movable disk 210 where the movable scroll 220 is disposed.

In this embodiment, the second oil inlet 202b is disposed at the outer side of the eccentric bearing portion 230, so that the movable scroll 200 can drive the second oil inlet 202b to periodically move between the area where the high-pressure oil storage cavity a is located and the area where the end face of the bracket 300 is located in the moving process, that is, the second oil inlet 202b has a position communicating with the high-pressure oil storage cavity a and a position blocked by the bracket 300. Thus, when the movable scroll 200 is in the first state, the second oil inlet 202b is communicated with the high-pressure oil storage chamber a, and the second oil supply passage 202 can smoothly supply oil to the first oil groove 101. When the movable scroll 200 is in the second state, the second oil inlet 202b is blocked by the bracket 300, so that the second oil supply channel 202 is not supplied with oil, and no air leakage problem occurs.

It can be appreciated that the scroll compressor includes a casing 500, a crank shaft 600 provided in the casing 500 and connected to the eccentric bearing portion 230, an oil sump 510 provided at the bottom of the casing 500, an oil suction passage 610 provided in the crank shaft 600 and communicating with the oil sump 510, and an outlet end of the oil suction passage 610 communicating with the high pressure oil storage chamber a. The oil in the high-pressure oil storage chamber a can be pumped into the oil pool 510 through the oil suction passage 610 in the crankshaft 600, ensuring a sufficient oil supply amount.

Further, referring to fig. 1 to 5, the first oil supply channel 201 is disposed on the movable disc 210, the first oil inlet 201b and the first oil outlet 201a are respectively located on two side end surfaces of the movable disc 210, and the first oil inlet 201b is communicated with the inner cavity of the eccentric bearing portion 230.

In this embodiment, the structural relationship of the first oil supply channel 201 on the movable scroll 200 is illustrated, the first oil inlet 201b is located at one end of the movable scroll 210 where the eccentric bearing portion 230 is disposed, and the first oil outlet 201a is located at one end of the movable scroll 210 where the movable scroll teeth 220 are disposed. It can be appreciated that the area where the eccentric bearing portion 230 is located is a high pressure area, the eccentric bearing portion 230 can move in the high pressure oil storage cavity a, and by disposing the first oil inlet 201b inside the eccentric bearing portion 230, the first oil inlet 201b is always communicated with the high pressure area no matter to which position the orbiting scroll 200 moves, so that the first oil supply channel 201 can supply oil to the corresponding oil groove no matter the first oil outlet 201a is communicated with the first oil groove 101 or communicated with the second oil groove 102, so as to ensure the lubrication effect of the end surfaces of the fixed scroll 100 and the orbiting scroll 200.

In an embodiment of the present application, the second oil supply passage 202 and the first oil supply passage 201 are disposed at opposite sides of the eccentric bearing portion 230, respectively.

In this embodiment, the second oil supply channel 202 and the first oil supply channel 201 are respectively disposed on opposite sides of the eccentric bearing portion 230, so that the first oil outlet 201a and the second oil outlet 202a are located on opposite sides of the end surface of the movable disk body 210 as much as possible, and thus the distance between the first oil outlet 201a and the second oil outlet 202a can be increased, so that the oil can be better supplied to the area with insufficient lubrication of the first oil groove 101, and the lubrication effect is improved.

As an example, the first oil supply channel 201 extends along the radial direction of the movable disk body 230, so that the path of the first oil supply channel 201 is effectively shortened, the flow efficiency of lubricating oil is improved, the oil supply efficiency for the first oil groove 101 is improved, and the reliability of the scroll compressor is improved.

Accordingly, the second oil supply channel 202 extends along the radial direction of the movable disk body 230, so that the path of the second oil supply channel 202 is effectively shortened, the flow efficiency of lubricating oil is improved, the oil supply efficiency for the first oil groove 101 is improved, and the reliability of the scroll compressor is improved.

As an example, referring to fig. 1, a throttle 700 may be provided in the first oil supply passage 201 to prevent an excessive amount of oil from flowing too fast. Accordingly, a throttle may be provided in the second oil supply passage 202 to prevent excessive oil amount and excessive oil flow rate. Or the throttling part 700 is not required to be arranged, the throttling purpose is achieved through the areas of the oil inlet and the oil outlet, and the conventional throttling mode of the oil supply channel can be referred to specifically, and details are omitted here. In order to prevent the second oil supply passage 202 from being in pressure communication with the outside of the orbiting scroll 200, an oil plug, a throttle, or the like may be provided in the second oil supply passage 202 near the outer edge of the orbiting scroll 230.

In an embodiment of the present application, a back pressure chamber B is further formed between the bracket 300 and the movable scroll 200, and the back pressure chamber B is disposed at the periphery of the high-pressure oil storage chamber a; the bracket 300 is provided with an annular groove 301, a sealing piece 400 for isolating the back pressure cavity B from the high-pressure oil storage cavity A is arranged in the annular groove 301, and the sealing piece 400 is clamped between the movable scroll 200 and the bracket 300.

It will be appreciated that, based on the foregoing embodiment, the high-pressure oil storage chamber a generates an upward pressure to the orbiting scroll 200, the high-pressure oil storage chamber a is located at a middle position of the orbiting scroll 200, and in order to make the matching reliability of the orbiting scroll 200 and the fixed scroll 100 better, a back pressure chamber B is formed between the bracket 300 and the orbiting scroll 200, and the back pressure chamber B can generate an upward force to an outer edge region of the orbiting scroll 200, while considering that the pressure to the orbiting scroll 200 cannot be too large, if the pressure is too large, the pressing force between the orbiting scroll 200 and the fixed scroll 100 may be too large, so the back pressure chamber B is a medium pressure chamber. In the embodiment, the annular groove 301 is arranged on the support 300, the sealing element 400 is arranged in the annular groove 301, and the sealing element 400 is respectively in propping sealing with the support 300 and the movable disc body 230, so that the back pressure cavity B and the high-pressure oil storage cavity A are isolated.

As an example, the second oil inlet 202b may be disposed near the seal 400, and when the orbiting scroll 200 drives the second oil outlet 202a just away from the first oil groove 101, the second oil inlet 202b may be blocked by the seal 400 to ensure that high pressure and low pressure do not cross air.

Alternatively, the seal 400 may be a PTFE (polytetrafluoroethylene) seal ring.

In an embodiment of the present application, referring to fig. 1 to 4, a fixed scroll 100 has a fixed scroll wrap 110, and a first oil groove 101 is formed to surround the outer circumference of the fixed scroll wrap 110 in a ring shape; the end face of the fixed scroll 100 is also provided with a second oil groove 102, and the second oil groove 102 surrounds the periphery of the first oil groove 101; the first oil groove 101 and the second oil groove 102 are periodically communicated with the first oil outlet 201a, respectively.

It will be appreciated that the fixed scroll 110 and the movable scroll 220 are engaged with each other to define a compression chamber, and according to the refrigerant pressure distribution, the first oil groove 101 close to the fixed scroll 110 is a high-pressure oil groove, and the second oil groove 102 far from the fixed scroll 110 is a medium-pressure oil groove. The first oil groove 101 and the second oil groove 102 are periodically communicated with the first oil outlet 201a, respectively, to ensure the supply of oil in the first oil groove 101 and the second oil groove 102.

As an example, one complete movement cycle of the movable scroll 200 with respect to the fixed scroll 100 is described as follows:

as shown in fig. 5, the movable scroll 200 is in the first state, the second oil outlet 202a of the second oil supply channel 202 is communicated with the first oil groove 101, the second oil inlet 202b is communicated with the high-pressure oil storage cavity a, and at this time, the oil in the high-pressure oil storage cavity a enters the first oil groove 101 through the second oil supply channel 202, so as to realize oil supply lubrication.

The movable scroll 200 continues to move to the position shown in fig. 6, the movable scroll 200 is in the second state, the second oil outlet 202a is not communicated with the first oil groove 101, the second oil inlet 202b is blocked by the seal 400, and the second oil supply passage 202 does not supply oil.

The movable scroll 200 continues to move to the position shown in fig. 7, the second oil outlet 202a is communicated with the second oil groove 102, but the second oil inlet 202b is blocked by the bracket 300, at this time, the second oil supply channel 202 does not supply oil, and no air leakage occurs between the high pressure area and the low pressure area.

The movable scroll 200 continues to move to the position shown in fig. 8, at this time, the movable scroll 200 is at the most distal position in the direction, the second oil outlet 202a is at the medium pressure position, the second oil inlet 202b is blocked by the bracket 300, the second oil supply channel 202 does not supply oil, and no air leakage occurs between the high pressure area and the low pressure area.

The subsequent orbiting scroll 200 continues to move back to the position shown in fig. 5, with the cycle of movement.

In some other embodiments of the present application, the movable scroll 200 is provided with two second oil supply passages 202, and second oil outlets 202a of the two second oil supply passages 202 are spaced apart from the first oil outlet 201a on the end surface of the movable scroll 200.

It is to be understood that the number of the second oil supply passages 202 is not limited to only one, and may be 1, 2, 3, 4, 5, or the like, as appropriate. As an example, two second oil supply passages 202 and one first oil supply passage 201 may be provided, and the oil supply function to the first oil groove 101 may be achieved by distributing two second oil outlets 202a on the end surface of the orbiting scroll 200 at intervals from the first oil outlet 201 a.

In an embodiment of the present application, the diameter dimension of the second oil outlet 202a is the same as the groove width dimension of the first oil groove 101.

In the present embodiment, by making the diameter size of the second oil outlet 202a the same as the groove width size of the first oil groove 101, sealability and excellent lubrication efficiency are ensured while processing costs can be reduced.

The utility model also provides a refrigeration device which comprises a scroll compressor, wherein the specific structure of the scroll compressor refers to the embodiment, and as the refrigeration device adopts all the technical schemes of all the embodiments, the refrigeration device at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted. Alternatively, the refrigeration device includes a refrigerator, an air conditioner, a cold chain car, or the like.

The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the description of the present utility model and the accompanying drawings or direct/indirect application in other related technical fields are included in the scope of the utility model.

Claims (13)

1. A scroll compressor, comprising:

the fixed scroll comprises a fixed scroll body, a fixed scroll and a fixed scroll, wherein a first oil groove is formed in the end face of the fixed scroll body; and

the movable vortex plate is rotatably connected with the fixed vortex plate and is matched with the fixed vortex plate to define a compression cavity;

the movable scroll is provided with a first oil supply channel and a second oil supply channel, the first oil supply channel is provided with a first oil outlet on the end face of the movable scroll, and the first oil outlet is periodically communicated with the first oil groove; the second oil supply channel is provided with a second oil outlet on the end face of the movable scroll, and the second oil outlet is periodically communicated with the first oil groove;

the second oil outlet is positioned on one side, away from the first oil outlet, of the end face of the movable scroll.

2. The scroll compressor of claim 1, further comprising a bracket disposed below the orbiting scroll, a high pressure oil storage chamber being formed between the bracket and the orbiting scroll;

the first oil inlet of the first oil supply channel is communicated with the high-pressure oil storage cavity, and the second oil inlet of the second oil supply channel is periodically communicated with the high-pressure oil storage cavity.

3. The scroll compressor of claim 2, wherein the orbiting scroll is defined to have a first state in which the second oil outlet communicates with the first oil sump and a second state in which the second oil outlet does not communicate with the first oil sump during movement;

in the first state, the second oil inlet is communicated with the high-pressure oil storage cavity;

and in the second state, the second oil inlet is not communicated with the high-pressure oil storage cavity.

4. The scroll compressor of claim 3, wherein the orbiting scroll includes an orbiting disk body, an orbiting scroll wrap provided on the orbiting disk body, and an eccentric bearing portion for engagement with a crankshaft, the eccentric bearing portion being movably fitted in the high pressure oil storage chamber;

the second oil supply channel is arranged on the movable disc body, the second oil inlet and the second oil outlet are respectively positioned on the end surfaces of the two sides of the movable disc body, and the second oil inlet is positioned on the outer side of the eccentric bearing part on the projection of the end surface of the movable disc body; and in the second state, the second oil inlet is blocked by the bracket.

5. The scroll compressor of claim 4, wherein the first oil supply passage is provided in the movable disk body, the first oil inlet and the first oil outlet are respectively provided on both side end surfaces of the movable disk body, and the first oil inlet is communicated with the inner cavity of the eccentric bearing portion.

6. The scroll compressor of claim 5, wherein the second oil supply passage and the first oil supply passage are provided on opposite sides of the eccentric bearing portion, respectively.

7. The scroll compressor of claim 4, further comprising a housing, a crankshaft disposed in the housing and connected to the eccentric bearing portion, an oil sump disposed at a bottom of the housing, an oil suction passage disposed in the crankshaft and communicating with the oil sump, and an outlet end of the oil suction passage communicating with the high pressure oil storage chamber.

8. The scroll compressor according to any one of claims 2 to 7, wherein a back pressure chamber is further formed between the bracket and the orbiting scroll, the back pressure chamber being provided at an outer periphery of the high-pressure oil storage chamber; the support is provided with an annular groove, a sealing piece used for isolating the back pressure cavity and the high-pressure oil storage cavity is arranged in the annular groove, and the sealing piece is clamped between the movable vortex plate and the support.

9. A scroll compressor as recited in any one of claims 1 to 7, wherein said second oil outlet and said first oil outlet are provided on both radial sides of an end surface of said movable scroll, respectively.

10. A scroll compressor as claimed in any one of claims 1 to 7, wherein said movable scroll is provided with two said second oil supply passages, second oil outlets of which are spaced apart from said first oil outlet on an end face of said movable scroll.

11. A scroll compressor as recited in any one of claims 1 to 7, wherein a diameter dimension of said second oil outlet is the same as a groove width dimension of said first oil groove.

12. The scroll compressor according to any one of claims 1 to 7, wherein said fixed scroll has a fixed scroll wrap, and said first oil groove is annularly formed around the outer periphery of said fixed scroll wrap;

the end face of the fixed scroll is also provided with a second oil groove, and the second oil groove surrounds the periphery of the first oil groove; the first oil groove and the second oil groove are respectively communicated with the first oil outlet periodically.

13. A refrigeration device comprising a scroll compressor as claimed in any one of claims 1 to 12.