Scroll compressor and air conditioner

Abstract

The invention discloses a scroll compressor and an air conditioner. The scroll compressor comprises a support, a static scroll plate, a dynamic scroll plate and a sealing piece. The support is provided with an oil return channel, the static scroll plate abuts against the support, the movable scroll plate eccentrically moves between the static scroll plate and the support, and the sealing piece is arranged on the support and located between the support and the movable scroll plate. A back pressure cavity is defined by the movable scroll plate, the static scroll plate, the support and the sealing piece, an oil carrying hole is formed in the end, close to the sealing piece, of the movable scroll plate, and the oil carrying hole is used for moving back and forth on the two sides of the sealing piece under the condition that the movable scroll plate eccentrically moves relative to the static scroll plate so as to carry oil in the back pressure cavity to the oil return channel. According to the technical scheme, the oil moving holes move on the two sides of the sealing piece, so that lubricating oil in the back pressure cavity is moved into the oil return channel, the flowing-out speed of the lubricating oil is increased, the lubricating oil is promoted to circulate, the abrasion degree of the static scroll plate and the dynamic scroll plate is reduced, and the service life of the scroll compressor is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of air outlet devices, and particularly to a scroll compressor and an air conditioner. Background Art

[0002] A scroll compressor is a volumetric compression compressor. The compression components are composed of a moving scroll disk and a stationary scroll disk. Both the moving scroll disk and the stationary scroll disk have spiral structures, and the air is compressed by the eccentric movement of the moving scroll disk.

[0003] In the prior art, the contact surface between the stationary scroll disk and the moving scroll disk is lubricated by lubricating oil. After absorbing heat, the lubricating oil will enter the back pressure chamber and flow out at the seal at the back pressure chamber. Since the seal needs to seal the back pressure chamber, the outflow of the lubricating oil at the seal is very small, resulting in difficulty in circulating the lubricating oil between the stationary and moving disks, thereby increasing the wear degree between the stationary scroll disk and the moving scroll disk and affecting the service life of the stationary scroll disk and the moving scroll disk. Summary of the Invention

[0004] The main object of the present invention is to provide a scroll compressor, aiming to improve the circulation speed of the lubricating oil to reduce the wear degree between the stationary scroll disk and the moving scroll disk.

[0005] To achieve the above object, the present invention provides a scroll compressor, including:

[0006] A bracket having an oil return passage;

[0007] A stationary scroll disk in contact with the bracket;

[0008] A moving scroll disk eccentrically moving between the stationary scroll disk and the bracket; and

[0009] A seal provided on the bracket and located between the bracket and the moving scroll disk;

[0010] The moving scroll disk, the stationary scroll disk, the bracket, and the seal enclose to form a back pressure chamber. An oil transfer hole is opened at one end of the moving scroll disk close to the seal. The oil transfer hole is used to move back and forth on both sides of the seal under the condition that the moving scroll disk moves eccentrically relative to the stationary scroll disk, so as to transfer the oil in the back pressure chamber to the oil return passage.

[0011] In some embodiments, when the seal at least covers part of the oil transfer hole, the oil transfer hole communicates with the back pressure chamber, or communicates with the oil return passage, or does not communicate with either the back pressure chamber or the oil return passage.

[0012] In some embodiments, in the radial direction of the bracket, the width of the oil transfer hole is less than or equal to the width of the seal, so that the seal can cover the oil transfer hole.

[0013] In some embodiments, the seal is arranged around the center of the bracket, and the number of the oil transfer holes is multiple. The multiple oil transfer holes are arranged around the eccentric shaft of the moving scroll plate.

[0014] In some embodiments, the oil transfer hole is an arc-shaped waist-shaped hole.

[0015] In some embodiments, the scroll compressor further includes a crankshaft. A through hole is formed in the middle of the bracket, and the crankshaft is rotatably arranged in the through hole and is in transmission connection with the moving scroll plate.

[0016] In some embodiments, the through hole is communicated with the oil return passage.

[0017] In some embodiments, the bracket includes a bracket body having the through hole, a first boss and a second boss both arranged on the bracket body. The first boss and the second boss are arranged at intervals. The first boss abuts against the stationary scroll plate, and the seal is arranged on the second boss.

[0018] In some embodiments, the stationary scroll plate has an abutting surface and a compression chamber formed on the abutting surface. The abutting surface is located at one end of the stationary scroll plate close to the bracket. The abutting surface abuts against the bracket, and the moving scroll plate is used to abut against the abutting surface and is rotatably arranged in the compression chamber.

[0019] In some embodiments, an oil storage groove is formed on the abutting surface, and the oil storage groove is located between the stationary scroll plate and the moving scroll plate.

[0020] In some embodiments, the moving scroll plate includes a transmission part, a contact part and a compression part. The transmission part and the compression part are respectively located on both sides of the contact part. The transmission part is eccentrically connected with the crankshaft in transmission. The compression part is rotatably arranged in the compression chamber. One end of the contact part close to the transmission part is connected with the seal to seal the back pressure chamber, and one end of the contact part close to the compression part is used to abut against the abutting surface.

[0021] The present invention also provides an air conditioner, including the scroll compressor according to any of the above embodiments.

[0022] By adopting the technical solution of this embodiment, the oil transfer hole moves on both sides of the seal to transfer the lubricating oil in the back pressure chamber into the oil return passage, improving the outflow speed of the lubricating oil, promoting the circulation of the lubricating oil, reducing the wear degree between the stationary scroll plate and the moving scroll plate, and improving the service life of the scroll compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0024] Figure 1 It is a schematic structural diagram of an embodiment of a scroll compressor of the present invention;

[0025] Figure 2 It is Figure 1 a sectional view of the scroll compressor along the A-A direction;

[0026] Figure 3 It is Figure 1 an enlarged schematic view at T in;

[0027] Figure 4 It is Figure 1 a schematic structural diagram of a moving scroll plate from one perspective in;

[0028] Figure 5 It is Figure 4 a schematic structural diagram of the moving scroll plate from another perspective in;

[0029] Figure 6 It is Figure 1 a schematic structural diagram of the crankshaft in;

[0030] Description of the reference numerals in the drawings:

[0031] 100 - Scroll compressor; 100a - Back pressure chamber, 100b - Oil return passage;

[0032] 110 - Bracket, 110a - Through hole, 112 - Frame body, 114 - First boss, 116 - Second boss;

[0033] 120 - Stationary scroll plate, 120a - Contact surface, 120b - Compression chamber, 120c - Oil storage tank

[0034] 130 - Moving scroll plate, 130a - Oil transfer hole, 132 - Transmission part, 134 - Contact part, 136 - Compression part;

[0035] 140 - Seal;

[0036] 150 - Crankshaft, 152 - Rotating part, 154 - Eccentric part, 154a - Oil injection hole;

[0037] 160 - Housing.

[0038] The realization, functional features and advantages of the object of the present invention will be further described in conjunction with the embodiments with reference to the accompanying drawings. Detailed implementation manners

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, the descriptions involving "first", "second", etc. in the present invention are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention.

[0042] Reference can be made to Figures 1 to 6 In an embodiment of the present invention, a scroll compressor 100 is proposed, which includes a bracket 110, a stationary scroll plate 120, a moving scroll plate 130 and a seal 140. The bracket 110 has an oil return passage 100b. The stationary scroll plate 120 abuts against the bracket 110. The moving scroll plate 130 moves eccentrically between the stationary scroll plate 120 and the bracket 110. The seal 140 is provided on the bracket 110 and is located between the bracket 110 and the moving scroll plate 130. The moving scroll plate 130, the stationary scroll plate 120, the bracket 110 and the seal 140 enclose a back pressure chamber 100a. An oil transfer hole 130a is formed at one end of the moving scroll plate 130 close to the seal 140. The oil transfer hole 130a is used to move back and forth on both sides of the seal 140 under the condition that the moving scroll plate 130 moves eccentrically relative to the stationary scroll plate 120, so as to transfer the oil in the back pressure chamber 100a to the oil return passage 100b.

[0043] It should be noted that the back pressure chamber 100a is a closed chamber, and the back pressure chamber 100a can apply a force towards the stationary scroll disk 120 to the moving scroll disk 130 through the pressure inside it, so that the moving scroll disk 130 abuts against the stationary scroll disk 120, thereby enabling the moving scroll disk 130 and the stationary scroll disk 120 to perform normal gas compression work.

[0044] Of course, when the moving scroll disk 130 abuts against the stationary scroll disk 120, it also performs an eccentric motion relative to the stationary scroll disk 120. To reduce friction, there is a certain amount of lubricating oil between the moving scroll disk 130 and the stationary scroll disk 120. When in use, the lubricating oil will enter the back pressure chamber 100a along the gap between the moving scroll disk 130 and the stationary scroll disk 120. The invention purpose of this application is to improve the discharge efficiency of the lubricating liquid and promote the circulating flow of the lubricating liquid.

[0045] In this embodiment, the moving scroll disk 130 performs an eccentric motion relative to the stationary scroll disk 120 and the bracket 110, and the oil transfer hole 130a also performs an eccentric motion along with the moving scroll disk 130. Based on the position characteristics of the seal 140 and the oil transfer groove, the oil transfer hole 130a can move relative to the seal 140, that is, it can reciprocate between the side of the seal 140 close to the back pressure chamber 100a and the side of the seal 140 close to the oil return passage 100b. Since the lubricating oil between the moving scroll disk 130 and the stationary scroll disk 120 can enter the back pressure chamber 100a, when the oil transfer hole 130a is communicated with the back pressure chamber 100a, the oil transfer hole 130a can receive a part of the lubricating oil in the back pressure chamber 100a, and when the oil transfer hole 130a crosses the seal 140 and moves to the side close to the oil return passage 100b, the oil transfer hole 130a is communicated with the return passage, so that the lubricating oil in the oil transfer hole 130a enters the oil return passage 100b.

[0046] Adopting the technical solution of this embodiment, the oil transfer hole 130a moves on both sides of the seal 140 to transfer the lubricating oil in the back pressure chamber 100a into the oil return passage 100b, improving the outflow speed of the lubricating oil, promoting the circulating flow of the lubricating oil, reducing the wear degree between the stationary scroll disk 120 and the moving scroll disk 130, and improving the service life of the scroll compressor 100.

[0047] Please continue to refer to Figures 1 to 6 especially Figure 2 It should be noted that Figure 2 is Figure 1A cross-sectional view taken along the A-A direction. In this perspective, the oil transfer hole 130a is an invisible structure, but it is shown in this figure for the sake of clearly showing the positional relationship between the oil transfer hole 130a and the seal 140. In some embodiments, under the condition that the seal 140 covers at least a part of the oil transfer hole 130a, the oil transfer hole 130a communicates with the back pressure chamber 100a, or communicates with the oil return passage 100b, or does not communicate with either the back pressure chamber 100a or the oil return passage 100b.

[0048] In this embodiment, that the seal 140 covers at least a part of the oil transfer hole 130a means that the oil transfer hole 130a is in a state directly above the seal 140. In this state, the oil transfer hole 130a does not communicate with both the back pressure chamber 100a and the oil return passage 100b at the same time.

[0049] Adopting the technical solution of this embodiment can reduce the possibility that the air in the back pressure chamber 100a directly enters the oil return passage 100b through the oil transfer hole 130a or the air in the oil return passage 100b enters the back pressure chamber 100a through the oil transfer hole 130a. In this way, the back pressure chamber 100a can be maintained in a sealed state, enabling the back pressure chamber 100a to continuously exert a force on the moving scroll 130 towards the stationary scroll 120, thereby reducing the impact of the oil transfer hole 130a on the normal operation of the scroll compressor 100.

[0050] Of course, there are various structural forms to achieve this effect, and this embodiment does not make any limitations.

[0051] In some embodiments, in the radial direction of the bracket 110, the width of the oil transfer hole 130a is less than or equal to the width of the seal 140, so that the seal 140 can cover the oil transfer hole 130a.

[0052] It can be understood that the main principle of the scroll compressor 100 in this embodiment is to compress air by the eccentric movement of the moving scroll 130 relative to the stationary scroll 120. Therefore, the scroll compressor 100 has a shaft body that outputs torque, and the moving scroll 130 moves eccentrically on the bracket 110. Thus, the radial direction of the bracket 110 can be regarded as the radial direction of this shaft body, that is, the radial direction of the crankshaft 150 described later.

[0053] Specifically, the part where the width of the oil transfer hole 130a and the width of the seal 140 are compared refers to the overlapping part of the oil transfer hole 130a and the seal 140 in the radial direction, and the width of the part of the seal 140 that does not overlap with the oil transfer hole 130a can be any value.

[0054] Adopting the technical solution of this embodiment, by limiting the thickness of the seal 140, it is possible to prevent the back pressure chamber 100a from communicating with the oil return passage 100b. The structure is simple and the production and manufacturing cost is relatively low.

[0055] Of course, in other embodiments, structures such as cavities and convex hulls with barrier characteristics can be provided on both sides of the seal 140.

[0056] In addition, since the oil transfer hole 130a makes an eccentric motion, the radial movement stroke of the oil transfer hole 130a is twice the eccentricity. Therefore, the thickness of the seal 140 should be less than this value to prevent the seal 140 from completely blocking the oil transfer hole 130a.

[0057] As Figure 2 or Figure 5 shown, in some embodiments, the seal 140 is arranged around the center of the bracket 110, and the number of the oil transfer holes 130a is multiple. The multiple oil transfer holes 130a are arranged around the eccentric shaft of the moving scroll disk 130.

[0058] For the convenience of description, an example is given below. Taking two oil transfer holes 130a arranged symmetrically about the eccentric axis as an example. When one of the oil transfer holes 130a moves from the back pressure chamber 100a towards the oil return passage 100b, the other oil transfer hole 130a moves from the oil return passage 100b towards the back pressure chamber 100a, and their movements are opposite. When this oil transfer hole 130a is located in the back pressure chamber 100a and at the leftmost side, the other oil transfer hole 130a is located in the oil return passage 100b and at the leftmost side. Therefore, based on the characteristics of the oil transfer hole 130a arranged around the eccentric shaft and the characteristics of the seal 140 arranged around the center of the bracket 110, the positional relationship of each oil transfer hole 130a relative to the seal 140, the back pressure chamber 100a, and the oil return passage 100b is the same or nearly the same.

[0059] In this way, the oil transfer effect of each oil transfer hole 130a can be made consistent, thereby maintaining the balance of the lubricating oil circulation.

[0060] Optionally, the number of the oil transfer holes 130a is six.

[0061] Of course, in other embodiments, the number of the oil transfer holes 130a can also be seven, eight or more.

[0062] By setting the number of the oil transfer holes 130a, the length of the oil transfer holes 130a can be relatively reduced to avoid the phenomenon that the back pressure chamber 100a is connected to the oil return passage 100b due to the length problem, and it is also convenient for the design of other structural dimensions.

[0063] Optionally, the oil transfer hole 130a is an arc-shaped waist-shaped hole.

[0064] In this embodiment, the oil transfer hole 130a consists of two oppositely arranged arc surface segments and two circular arc surface segments, and the circular arc surface segments are used to connect the two arc surface segments. Specifically, the radian of the arc surface segment is the length of the oil transfer hole 130a, and the radian of the circular arc surface segment is the width of the oil transfer hole 130a.

[0065] Further, the radial extension line of the arc-shaped section passes through the eccentric shaft. In this way, the distance from any position in the circumferential direction of the oil transfer hole 130a to the seal 140 is substantially the same.

[0066] Of course, in other feasible embodiments, the oil transfer hole 130a can be a round hole.

[0067] In addition, it should be noted that the oil transfer hole 130a is a blind hole, and its depth is less than the thickness of the moving scroll disk 130.

[0068] Reference can be made to Figure 1 and Figure 6 , in some embodiments, the scroll compressor 100 further includes a crankshaft 150. A through hole 110a is provided in the middle of the bracket 110. The crankshaft 150 is rotatably disposed in the through hole 110a and is in driving connection with the moving scroll disk 130.

[0069] In this embodiment, the crankshaft 150 includes a rotating portion 152 and an eccentric portion 154. The rotating portion 152 makes a self-rotating motion, and the eccentric portion 154 is connected to the moving scroll disk 130 to drive the moving scroll disk 130 to make an eccentric motion.

[0070] In addition, the axis of the rotating portion 152 is the axis of the inner cavity of the bracket 110.

[0071] Such as Figure 1 or Figure 3 shown, in some embodiments, the through hole 110a is communicated with the oil return passage 100b.

[0072] It is worth mentioning that the function of the through hole 110a is to form a space for the crankshaft 150 to pass through. In the technical solution of this embodiment, by connecting the through hole 110a with the oil return passage 100b, the lubricating oil transported by the oil transfer hole 130a can enter the oil return passage 100b when it reaches the through hole 110a.

[0073] With such a design, a part of the structure of the through hole 110a can be used as the oil return passage 100b, without the need to provide an additional cavity to receive the lubricating oil of the oil transfer hole 130a, which simplifies the structure of the bracket 110 and reduces the production cost.

[0074] In a feasible implementation manner, the through hole 110a is provided in a stepped shape. Specifically, the diameter of the through hole 110a near the moving scroll disk 130 is larger than the diameter of the part away from the moving scroll disk 130. The part of the through hole 110a away from the moving scroll disk 130 is rotatably connected to the crankshaft 150, and there is a gap between the part near the moving scroll disk 130 and the inner wall of the through hole 110a for the lubricating liquid to flow through.

[0075] In some embodiments, the scroll compressor 100 further includes a housing 160 , and the fixed scroll 120 , the orbiting scroll 130 , and the bracket 110 are all disposed in the housing 160 .

[0076] Furthermore, the oil return passage 100b also includes a first section and a second section. The length direction of the first section is radial. The first section is connected to the through hole 110a and extends radially to the housing 160 , and the second section extends axially along the inner wall of the housing 160 away from the movable scroll 130 .

[0077] In addition, you can refer to Figure 6 In order to achieve the circulation of lubricating oil, an oil filling hole 154 a may be provided inside the crankshaft 150 , and the oil filling hole 154 a may deliver the lubricating oil to the contact surface between the orbiting scroll 130 and the fixed scroll 120 .

[0078] You can refer to Figure 1 and Figure 3 In some embodiments, the bracket 110 includes a frame body 112 having a through hole 110a and a first boss 114 and a second boss 116 both disposed on the frame body 112. The first boss 114 and the second boss 116 are spaced apart from each other, the first boss 114 abuts against the fixed scroll plate 120, and the seal 140 is disposed on the second boss 116.

[0079] In this embodiment, the first boss 114 is annular and radially close to the housing. The second boss 116 is also annular and radially close to the through hole 110a. Therefore, the back pressure chamber 100a is formed by the inner side of the first boss 114, the end surface of the frame 112 having the first boss 114 and the second boss 116, the outer side of the second boss 116, and the relevant parts of the orbiting scroll 130 and the fixed scroll 120.

[0080] By adopting the technical solution of this embodiment, the bracket 110 is connected to the fixed scroll 120 through the first boss 114, and the second boss 116 is used to install the seal 140. At the same time, a partial outline of the back pressure chamber 100a can be formed by the first boss 114 and the second boss 116. In this way, multiple functions can be realized only by a simple protrusion structure, which reflects the advanced structure of the scroll compressor 100.

[0081] Optionally, a receiving groove is formed on the end surface of the second boss 116 close to the movable scroll 130 , and the sealing member 140 is received in the receiving groove and protrudes from the surface of the second boss 116 .

[0082] Optionally, a gap between the second boss 116 and the orbiting scroll 130 is less than or equal to 2 mm.

[0083] Optionally, the seal 140 is a rotary seal 140, which can be a Y-shaped sealing ring, a V-shaped sealing ring, or other types of seals 140.

[0084] As Figure 3 shown, in some embodiments, the stationary scroll 120 has an abutting surface 120a and a compression chamber 120b formed on the abutting surface 120a. The abutting surface 120a is located at one end of the stationary scroll 120 close to the bracket 110, and the abutting surface 120a abuts against the bracket 110. The moving scroll 130 is used to abut against the abutting surface 120a and rotates in the compression chamber 120b.

[0085] In this embodiment, there is a fixed and spiral structure in the compression chamber 120b of the stationary scroll 120, and the eccentric movement of the moving scroll 130 relative to this structure can compress air.

[0086] Adopting the technical solution of this embodiment, by abutting the abutting surface against the bracket 110 and the moving scroll 130, and then forming the compression chamber 120b on the abutting surface, when the back pressure chamber 100a applies an axial force to the moving scroll 130, a certain sealing effect can be achieved between the moving scroll 130 and the abutting surface, so that the compression work in the compression chamber 120b can proceed normally.

[0087] Furthermore, with such a design, it is also convenient for the lubricating oil on the abutting surface to enter the back pressure chamber 100a, and then the lubricating oil in the back pressure chamber 100a is transported through the oil transfer hole 130a to realize the circulation of the lubricating oil.

[0088] Please continue to refer to Figure 3 , in some embodiments, an oil storage groove 120c is formed on the abutting surface 120a, and the oil storage groove 120c is located between the stationary scroll 120 and the moving scroll 130.

[0089] In this embodiment, the oil storage groove 120c can store a certain amount of lubricating oil. When the moving scroll 130 and the stationary scroll 120 rotate relative to each other, the oil storage groove 120c can release lubricating oil to the abutting surface 120a to achieve the effects of lubrication and sealing.

[0090] To enhance the oil storage effect of the oil storage groove 120c, a wool felt or similar oil storage component can be provided in the oil storage groove 120c.

[0091] In addition, the lubricating oil flowing out of the oil injection hole 154a in the crankshaft 150 can be input into the oil storage groove 120c to realize the circulation of the lubricating oil.

[0092] Adopting the technical solution of this embodiment can maintain the amount of lubricating oil on the abutting surface 120a, reduce the wear of the moving scroll 130 and the stationary scroll 120, and improve the service life of the scroll compressor 100.

[0093] Optionally, the oil storage tank 120c is an annular groove.

[0094] Reference may be made to Figure 3 and Figure 4 , in some embodiments, the moving scroll disk 130 includes a transmission portion 132, a contact portion 134, and a compression portion 136. The transmission portion 132 and the compression portion 136 are respectively located on both sides of the contact portion 134. The transmission portion 132 is eccentrically drivingly connected to the crankshaft 150. The compression portion 136 is rotatably disposed in the compression chamber 120b. One end of the contact portion 134 close to the transmission portion 132 is connected to the seal 140 to seal the back pressure chamber 100a. One end of the contact portion 134 close to the compression portion 136 is used to abut against the abutting surface 120a.

[0095] In this embodiment, the transmission portion 132 is hollow and sleeved on the eccentric portion 154 of the crankshaft 150. Further, a rolling bearing is provided in the transmission portion 132. The compression portion 136 is spiral-shaped to facilitate compressing air. Since the compression portion 136 is not the main improvement point of this application, it will not be elaborated here.

[0096] Optionally, the contact portion 134 is disc-shaped.

[0097] Adopting the technical solution of this embodiment, by designing the positions of the two surfaces in the contact portion 134, the sealing problem of the back pressure chamber 100a is solved. In addition, since the two surfaces of the contact portion 134 respectively belong to the inflow and outflow surfaces of the lubricating oil, the lubricating oil can also flow along the contour of the contact portion 134, further accelerating the circulation of the lubricating oil.

[0098] The present invention also provides an air conditioner, including the scroll compressor 100 according to any of the above embodiments. The specific structure of the scroll compressor 100 refers to the above embodiments. Since this air conditioner adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0099] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the inventive concept of the present invention by using the content of the specification and drawings of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A scroll compressor, characterized in that, Comprising: A bracket having an oil return passage; A stationary scroll plate in abutment with the bracket; A moving scroll plate eccentrically moving between the stationary scroll plate and the bracket; And A seal provided on the bracket and located between the bracket and the moving scroll plate; The moving scroll plate, the stationary scroll plate, the bracket and the seal enclose a back pressure chamber. An oil transfer hole is formed at one end of the moving scroll plate close to the seal. The oil transfer hole is configured to move back and forth on both sides of the seal under the condition that the moving scroll plate eccentrically moves relative to the stationary scroll plate, so as to transfer the oil in the back pressure chamber to the oil return passage.

2. The scroll compressor according to claim 1, characterized in that, Under the condition that the seal at least covers part of the oil transfer hole, the oil transfer hole communicates with the back pressure chamber, or communicates with the oil return passage, or does not communicate with either the back pressure chamber or the oil return passage.

3. The scroll compressor according to claim 2, wherein, In the radial direction of the bracket, the width of the oil transfer hole is less than or equal to the width of the seal, so that the seal can cover the oil transfer hole.

4. The scroll compressor according to claim 3, wherein The seal is arranged around the center of the bracket. The number of the oil transfer holes is multiple, and the multiple oil transfer holes are arranged around the eccentric shaft of the moving scroll plate.

5. The scroll compressor according to claim 4, characterized in that, The oil transfer hole is an arc-shaped waist-shaped hole.

6. The scroll compressor according to any one of claims 1-5, characterized in that, The scroll compressor further includes a crankshaft. A through hole is formed in the middle of the bracket. The crankshaft is rotatably arranged in the through hole and is in transmission connection with the moving scroll plate.

7. The scroll compressor according to claim 6, wherein The through hole communicates with the oil return passage.

8. The scroll compressor according to claim 7, characterized in that, The bracket includes a frame body having the through hole, a first boss and a second boss both provided on the frame body. The first boss and the second boss are arranged at intervals. The first boss abuts against the stationary scroll plate, and the seal is provided on the second boss.

9. The scroll compressor according to claim 6, characterized in that, The stationary scroll plate has an abutting surface and a compression chamber formed in the abutting surface. The abutting surface is located at one end of the stationary scroll plate close to the bracket. The abutting surface abuts against the bracket. The moving scroll plate is configured to abut against the abutting surface and is rotatably arranged in the compression chamber.

10. The scroll compressor according to claim 9, characterized in that, An oil storage groove is formed in the abutting surface and is located between the stationary scroll plate and the moving scroll plate.

11. The scroll compressor according to claim 9, characterized in that, The moving scroll plate includes a transmission part, a contact part and a compression part. The transmission part and the compression part are respectively located on both sides of the contact part. The transmission part is eccentrically in transmission connection with the crankshaft. The compression part is rotatably arranged in the compression chamber. One end of the contact part close to the transmission part is connected to the seal to seal the back pressure chamber. One end of the contact part close to the compression part is configured to abut against the abutting surface.

12. An air conditioner, characterized in that, Including the scroll compressor according to any one of claims 1-11.

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