Scroll compressor, Air conditioner

Abstract

The present application provides a scroll compressor, air conditioner, wherein the scroll compressor comprises: a crankshaft connected with a moving scroll, a back pressure adjusting mechanism arranged on the crankshaft, and the back pressure adjusting mechanism being capable of exerting a back pressure on the moving scroll in positive correlation with the rotating speed of the crankshaft. According to the present application, when the back pressure adjusting mechanism is capable of exerting a back pressure on the moving scroll in positive correlation with the rotating speed of the crankshaft, it means that the back pressure adjusting mechanism is capable of exerting a back pressure on the moving scroll in positive correlation with the operating frequency of the compressor. When the operating frequency of the compressor increases, the back pressure exerted by the back pressure adjusting mechanism on the moving scroll will also increase, thereby solving the problem that the overturning of the pump body will further increase as the operating frequency of the compressor increases, ensuring the smooth operation of the compressor at high frequency, reducing the noise, reducing the leakage of the pump body, increasing the refrigerating capacity and energy efficiency of the compressor.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioners, and particularly relates to a scroll compressor and an air conditioner. BACKGROUND

[0002] The scroll compressor is widely used in air conditioners and heat pumps due to its high efficiency, small size and stable operation. Generally, the scroll compressor is composed of a closed tube shell, a moving scroll, a stationary scroll, a frame, a crankshaft, an anti-rotation sliding ring, a motor and an oil supply structure. During operation, the moving scroll and the stationary scroll of the scroll compressor may be tilted due to the eccentricity of the crankshaft and the moving scroll, and the moving scroll may be tilted due to the off-center gravity. The tilt may increase the gap between the pump body and the upper support, resulting in leakage of the pump body and affecting the cooling capacity and performance of the compressor. Meanwhile, the tilt of the pump body may cause unstable operation of the moving scroll, resulting in an increase in noise. Therefore, an axial force is needed to be provided on the back of the moving scroll to make the moving scroll and the stationary scroll adhere to each other and reduce the leakage of the pump body and the unstable operation of the moving scroll. During operation, the tilt torque of the scroll compressor increases with the increase in frequency, and the axial back pressure provided by the existing pump body back pressure structure cannot change with the change in the frequency of the compressor, so the tilt of the pump body will further increase with the increase in the operating frequency of the compressor, and the leakage of the pump body will also increase. SUMMARY

[0003] Therefore, the present application provides a scroll compressor which can overcome the problem that the axial back pressure provided by the existing back pressure structure on the pump body cannot change with the change in the frequency of the compressor, so that the tilt of the pump body will further increase with the increase in the operating frequency of the compressor, and the leakage of the pump body will also increase.

[0004] To solve the above problems, the present application provides a scroll compressor, comprising a moving scroll, a crankshaft and a back pressure adjusting mechanism, the crankshaft is connected with the moving scroll, the back pressure adjusting mechanism is arranged on the crankshaft, and the back pressure adjusting mechanism can exert a back pressure on the moving scroll which is positively correlated with the rotating speed of the crankshaft.

[0005] In some embodiments, the crankshaft penetrates the upper support and is connected with the moving scroll, and the back pressure adjusting mechanism is arranged in the upper support.

[0006] In some embodiments, the back pressure adjusting mechanism comprises a supporting part and a conducting body, the conducting body has a lifting part, the supporting part is arranged between the lifting part and the moving scroll, the conducting body can slide in the upper support to lift the supporting part by the lifting part, and the lifted supporting part exerts the back pressure on the moving scroll.

[0007] In some embodiments, the lifting portion comprises a first inclined surface, the supporting component has a second inclined surface matched with the first inclined surface, the first inclined surface abuts against the second inclined surface, and the first inclined surface gradually decreases in height along a direction close to the supporting component.

[0008] In some embodiments, the back pressure force adjusting mechanism further comprises a top piece, a first end of the top piece is slidably inserted on the crankshaft, the top piece has a first arc-shaped surface protruding outward, the first arc-shaped surface is at a second end of the top piece, the conducting body is sleeved on an outer side of the crankshaft, the conducting body further has an inner circumferential surface surrounding the crankshaft, when the crankshaft drives the top piece to rotate synchronously, the first arc-shaped surface abuts against the inner circumferential surface and makes the conducting body slide in the upper support.

[0009] In some embodiments, a plane where any cross section of the crankshaft is located is a reference plane, and a vertical projection of the inner circumferential surface in the reference plane is a circle.

[0010] In some embodiments, the conducting body comprises a plurality of sliding pieces, the sliding pieces have second arc-shaped surfaces recessed inward, each of the second arc-shaped surfaces is connected to form the inner circumferential surface, and the first inclined surface is on the sliding pieces.

[0011] In some embodiments, the upper support has a base plate, the base plate is configured with a limiting groove extending along a radial direction of the base plate, the sliding pieces further have protruding portions in the limiting groove, and the protruding portions can only slide along the radial direction of the base plate in the limiting groove.

[0012] In some embodiments, the back pressure force adjusting mechanism further comprises a sleeve body, the sleeve body is sleeved on the crankshaft, the sleeve body is configured with a insertion hole, and a first end of the top piece is slidably inserted in the insertion hole.

[0013] In some embodiments, the number of the top pieces is a plurality, and each of the top pieces is arranged at intervals around the sleeve body.

[0014] In some embodiments, the back pressure force adjusting mechanism further comprises an elastic component, the elastic component is in the insertion hole, a first end of the elastic component is connected with an inner wall of the insertion hole, and a second end of the elastic component is connected with the first end of the top piece.

[0015] In some embodiments, an outer circumferential wall of the sleeve body is configured with a groove, the top piece has a first arc-shaped portion at the second end of the top piece, the first arc-shaped surface is on the first arc-shaped portion, and the first arc-shaped portion is limited in the groove.

[0016] In some embodiments, the number of support components is two, and the two support components are centrosymmetric relative to a central axis of the crankshaft.

[0017] In some embodiments, a static scroll is further included, and the static scroll cooperates with the dynamic scroll to form a compression chamber, the dynamic scroll has a base plate, the base plate is configured with a first vent hole and a second vent hole, the first vent hole is in communication with the compression chamber through the second vent hole, an opening of the first vent hole is outside the compression chamber, and an opening of the second vent hole is inside the compression chamber.

[0018] The application further provides an air conditioner comprising the scroll compressor.

[0019] The application provides a scroll compressor and an air conditioner. When the back pressure adjusting mechanism can exert a back pressure on the dynamic scroll in positive correlation with the rotating speed of the crankshaft, it means that the back pressure adjusting mechanism can exert a back pressure on the dynamic scroll in positive correlation with the operating frequency of the compressor. When the operating frequency of the compressor increases, the back pressure exerted by the back pressure adjusting mechanism on the dynamic scroll also increases, thereby solving the problem that the overturning of the pump body further increases as the operating frequency of the compressor increases, ensuring the smooth operation of the compressor at high frequency, reducing noise, reducing the leakage of the pump body, increasing the refrigerating capacity of the compressor, and improving the energy efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a partial explosion schematic view of the scroll compressor of the embodiment of the application.

[0021] Figure 2 It is an explosion schematic view of the back pressure adjusting mechanism of the scroll compressor of the embodiment of the application.

[0022] Figure 3 It is a structural schematic view of the sleeve body and the elastic component of the back pressure adjusting mechanism of the scroll compressor of the embodiment of the application.

[0023] Figure 4 It is a sectional view of the scroll compressor of the embodiment of the application.

[0024] Figure 5 It is a sectional view of the back pressure adjusting mechanism of the scroll compressor of the embodiment of the application in an initial state.

[0025] Figure 6 It is a sectional view of the back pressure adjusting mechanism of the scroll compressor of the embodiment of the application in a working state.

[0026] Figure 7 It is a structural schematic view of the dynamic scroll of the scroll compressor of the embodiment of the application.

[0027] The reference signs are represented as:

[0028] 1, orbiting scroll; 2, crankshaft; 3, back pressure adjusting mechanism; 31, support part; 32, top part; 33, sliding part; 34, sleeve; 35, insertion hole; 36, elastic part; 37, recess; 38, protrusion; 4, limiting groove; 5, fixed scroll; 6, first vent hole; 7, second vent hole; 8, upper bracket upper part; 9, upper bracket lower part; 10, cross slide ring; 11, balance block. DETAILED DESCRIPTION

[0029] BRIEF DESCRIPTION OF DRAWINGS Figures 1 to 7 According to the embodiment of the present application, a scroll compressor is provided, which comprises an orbiting scroll 1, a crankshaft 2 and a back pressure adjusting mechanism 3. The crankshaft 2 is connected with the orbiting scroll 1, and the back pressure adjusting mechanism 3 is arranged on the crankshaft 2. The back pressure adjusting mechanism 3 can exert a back pressure on the orbiting scroll 1 in positive correlation with the rotating speed of the crankshaft 2. In this technical solution, the rotating speed of the crankshaft 2 represents the operating frequency of the scroll compressor. When the back pressure adjusting mechanism 3 can exert a back pressure on the orbiting scroll 1 in positive correlation with the rotating speed of the crankshaft 2, it means that the back pressure adjusting mechanism 3 can exert a back pressure on the orbiting scroll 1 in positive correlation with the operating frequency of the compressor. When the operating frequency of the compressor increases, the back pressure exerted by the back pressure adjusting mechanism 3 on the orbiting scroll 1 also increases, thereby solving the problem that the overturning of the pump body further increases as the operating frequency of the compressor increases, ensuring the smooth operation of the compressor at high frequency, reducing noise, reducing the leakage of the pump body, increasing the refrigerating capacity and energy efficiency of the compressor. The positive correlation means that the back pressure exerted by the back pressure adjusting mechanism 3 on the orbiting scroll 1 increases as the rotating speed of the crankshaft 2 increases, and decreases as the rotating speed of the crankshaft 2 decreases.

[0030] Specifically, the scroll compressor further comprises an upper bracket, the crankshaft 2 penetrates through the upper bracket and is connected with the orbiting scroll 1, and the back pressure adjusting mechanism 3 is arranged in the upper bracket. The back pressure adjusting mechanism 3 needs installation space, and the pump body composed of the upper bracket, the orbiting scroll 1 and the fixed scroll 5 is assembled together, and the upper bracket has a certain space inside. Therefore, the installation of the back pressure adjusting mechanism 3 in the upper bracket makes the overall structure compact.

[0031] In this embodiment, the back pressure regulating mechanism 3 includes a support member 31 and a conductor. The conductor has a lifting portion. The support member 31 is located between the lifting portion and the orbiting scroll 1. The conductor can slide within the upper bracket, causing the lifting portion to lift the support member 31. The lifted support member 31 applies back pressure to the orbiting scroll 1. The sliding of the conductor along the radial direction of the upper bracket is converted into the lifting of the support member 31 along the axial direction of the upper bracket, thereby causing the support member 31 to press against the orbiting scroll 1 and apply back pressure to the orbiting scroll 1. The upper bracket includes an upper bracket upper portion 8 and an upper bracket lower portion 9. The upper bracket upper portion 8 is configured with a through-groove. The support member 31 passes through the through-groove from the upper bracket lower portion 9 to press against the orbiting scroll 1, and the support member 31 simultaneously abuts against the inner walls of the upper bracket upper portion 8 and the upper bracket lower portion 9. The conductor is located within the upper bracket lower portion 9.

[0032] See also Figure 2 and Figure 5 As shown, the lifting portion includes a first inclined surface, and the support member 31 has a second inclined surface that matches the first inclined surface. The first inclined surface abuts the second inclined surface, and the first inclined surface gradually decreases in height as it approaches the support member 31. The first inclined surface on the conductive body slopes downward. When the conductive body slides within the lower portion 9 of the upper bracket, it applies force to the support member 31. Because the first inclined surface of the conductive body abuts the second inclined surface of the support member 31, when the conductive body applies thrust to the support member 31, this thrust is decomposed into two components, one horizontal and one vertical. The horizontal force is ultimately transmitted to the upper bracket by the support member 31, while the vertical force slightly lifts the support member 31. After the support member 31 is slightly lifted, it presses against the orbiting scroll 1 and applies back pressure to the orbiting scroll 1. The coordination of the first and second inclined surfaces converts radial force into axial force.

[0033] See also Figure 2 and Figure 5As shown in Figs. 1 and 2, the back pressure regulating mechanism 3 further comprises a top piece 32, a first end of the top piece 32 is slidably inserted into the crankshaft 2, the top piece 32 has a first arc-shaped surface protruding outward, the first arc-shaped surface is at a second end of the top piece 32, a conducting body is sleeved outside the crankshaft 2, the conducting body further has an inner circumferential surface surrounding the crankshaft 2, when the crankshaft 2 drives the top piece 32 to rotate synchronously, the first arc-shaped surface abuts against the inner circumferential surface and makes the conducting body slide in the upper bracket. The top piece 32 is in the lower part 9 of the upper bracket. Because the first end of the top piece 32 is slidably inserted into the crankshaft 2, when the crankshaft 2 drives the top piece 32 to rotate synchronously, the first arc-shaped surface of the top piece 32 slides along the inner circumferential surface of the conducting body and the top piece 32 exerts a force on the conducting body under the action of centrifugal force, the conducting body slightly slides in the lower part 9 of the upper bracket after being subjected to the force and exerts a force on the supporting component 31, the supporting component 31 exerts a back pressure on the orbiting scroll 1 after being subjected to the force. Through the interaction of the top piece 32, the conducting body and the supporting component 31, the centrifugal force generated by the top piece 32 is converted into the back pressure of the supporting component 31 on the orbiting scroll 1, and the back pressure is positively correlated with the rotating speed of the crankshaft 2, that is, the back pressure is positively correlated with the operating frequency of the compressor. Thus, the axial back pressure borne by the pump body changes with the operating frequency of the compressor. The back pressure regulating mechanism 3 has simple principle and strong practicability and reliability. The first arc-shaped surface provided on the top piece 32 makes the top piece 32 slide relative to the inner circumferential surface of the conducting body more easily.

[0034] As a specific embodiment, the plane where any cross section of the crankshaft 2 is located is a reference plane, and the vertical projection of the inner circumferential surface of the conducting body in the reference plane is a circle. When the vertical projection of the inner circumferential surface of the conducting body in the reference plane is a circle, it indicates that the inner circumferential surface of the conducting body is equivalent to the outer circumferential surface of a cylinder, and thus the first arc-shaped surface of the top piece 32 slides along the inner circumferential surface of the conducting body more easily, and the pushing force exerted by the top piece 32 on the conducting body is more uniform.

[0035] For reference, Figure 1 and Figure 2 As shown in Figs. 1 and 2, the conducting body comprises a plurality of sliding pieces 33, each sliding piece 33 has a second arc-shaped surface recessed inward, the second arc-shaped surfaces are connected to form the inner circumferential surface, and the first inclined surface is on the sliding piece 33. The conducting body comprises a plurality of sliding pieces 33, which is equivalent to a split structure of the conducting body. When the top piece 32 exerts a force on each sliding piece 33 under the action of centrifugal force, each sliding piece 33 will not interfere with each other when being subjected to the force, and each sliding piece 33 will better exert an upward pushing force on the supporting component 31. The sliding piece 33 has a second arc-shaped portion at an end of the sliding piece 33, and the second arc-shaped surface is the surface of the second arc-shaped portion facing the top piece 32. The sliding piece 33 further has a side arm connected to the second arc-shaped portion, and the first inclined surface is at a free end of the side arm.

[0036] For reference, Figure 1 and Figure 5As shown in the figure, the upper support has a base plate, and a limiting groove 4 extending along the radial direction of the base plate is formed on the base plate. The sliding member 33 also has a protruding part 38 in the limiting groove 4, and the protruding part 38 can only slide along the radial direction of the base plate in the limiting groove 4. The protruding part 38 is below the side arm of the sliding member 33. The protruding part 38 can only slide along the radial direction of the base plate in the limiting groove 4, which limits the movement of the sliding member 33. In this way, when the top member 32 pushes the sliding member 33 under the action of centrifugal force, the sliding member 33 can only slide along the radial direction of the base plate, so that the sliding member 33 further better applies force to the support part 31.

[0037] For reference Figure 2 and Figure 3 As shown in the figure, the back pressure regulating mechanism 3 also includes a sleeve 34, which is sleeved on the crankshaft 2. The sleeve 34 is provided with a insertion hole 35, and the first end of the top member 32 is slidably inserted into the insertion hole 35. The sleeve 34 can avoid opening a hole on the crankshaft 2, and then the top member 32 is slidably inserted into the hole of the crankshaft 2, thereby ensuring the integrity of the crankshaft 2, and further ensuring the structural strength of the crankshaft 2.

[0038] Specifically, the number of top members 32 is multiple, and each top member 32 is arranged at intervals around the sleeve 34. The number of top members 32 is multiple, so that when the crankshaft 2 drives each top member 32 to rotate synchronously, each top member 32 can apply more continuous pushing force to each sliding member 33 under the action of centrifugal force.

[0039] For reference Figure 2 and Figure 3 As shown in the figure, the back pressure regulating mechanism 3 also includes a elastic component 36, which is in the insertion hole 35, and the first end of the elastic component 36 is connected with the inner wall of the insertion hole 35. The first end of the top member 32 is provided with an operation hole, and the second end of the elastic component 36 is connected with the inner wall of the operation hole. The operation hole can save space. Preferably, the elastic component 36 is a spring, and the arrangement of the elastic component 36 enables the top member 32 to automatically reset when the crankshaft 2 rotates slowly or stops rotating.

[0040] Preferably, a groove 37 is formed on the outer peripheral wall of the sleeve 34, and the top member 32 has a first arc-shaped part at the second end of the top member 32. A first arc-shaped surface is on the first arc-shaped part, and the first arc-shaped part is limited in the groove 37. The groove 37 is a ring-shaped groove around the sleeve 34, and the first arc-shaped part of the top member 32 is matched with the ring-shaped groove, and the first arc-shaped part of each top member 32 is in the ring-shaped groove. The formation of the ring-shaped groove can prevent each top member 32 from moving along the axial direction of the sleeve 34.

[0041] Figure 5The figure shows the cross section of the back pressure regulating mechanism 3 in the initial state, in which the crankshaft 2 does not rotate, the top piece 32 is in the groove of the sleeve 34, and the sliding piece 33 is not pushed by the top piece 32. Figure 6 The figure shows the cross section of the back pressure regulating mechanism 3 in the working state, in which the crankshaft 2 rotates, under the action of centrifugal force, the top piece 32 moves from inside to outside of the sleeve 34, and pushes the sliding piece 33 to slide in a small range. Because the moving distance of the top piece 32 and the sliding distance of the sliding piece 33 are both small, the back pressure regulating mechanism 3 can produce a back pressure force in a small range. Figure 5 And Figure 6 The difference is not obvious.

[0042] In the embodiment, the number of the support components 31 is two, and the two support components 31 are centrally symmetrical relative to the central axis of the crankshaft 2. The support components 31 are arc bodies, and the two support components 31 are centrally symmetrical relative to the central axis of the crankshaft 2, which can ensure that the two support components 31 apply the same back pressure force to the orbiting scroll 1, and is more conducive to preventing the orbiting scroll 1 from overturning, so that the orbiting scroll 1 runs more smoothly. Moreover, compared with the case that the support components 31 are a complete annular body, the case that the support components 31 are two can avoid that the annular through slot is formed around the bottom plate of the upper support upper portion 8, and the bottom plate of the upper support upper portion 8 and the side wall connected to the bottom plate are completely separated.

[0043] For reference Figure 7 The figure also shows that the scroll compressor further comprises a fixed scroll 5, the fixed scroll 5 cooperates with the orbiting scroll 1 to form a compression chamber, the orbiting scroll 1 has a base plate, the base plate is provided with a first vent hole 6 and a second vent hole 7, the first vent hole 6 is communicated with the compression chamber through the second vent hole 7, the opening of the first vent hole 6 is outside the compression chamber, and the opening of the second vent hole 7 is inside the compression chamber. With the increase of the operation frequency of the scroll compressor, the air pressure in the compression chamber formed by the fixed scroll 5 and the orbiting scroll 1 will also increase, and the larger air pressure will exert a larger reaction force on the orbiting scroll 1. The structure of the first vent hole 6 and the second vent hole 7 can make the gas in the compression chamber release pressure outward, so as to reduce the reaction force exerted by the air pressure on the orbiting scroll 1. This way of releasing the gas pressure in the compression chamber is called the medium pressure hole back pressure way. By combining the medium pressure hole back pressure way with the way of generating back pressure by the back pressure regulating mechanism 3, the back pressure force limiting overturning force is further ensured when the pump body runs at a high speed, the force on the back of the pump body is more uniform, the pump body runs more smoothly, and the reliability is better.

[0044] The application further provides an air conditioner comprising the scroll compressor.

[0045] Those skilled in the art can understand that the above advantageous modes can be freely combined and superimposed without conflict.

[0046] The above merely describes the preferred embodiments of the present application, but should not be used to limit the present application, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application. The above merely describes the preferred embodiments of the present application, but should not be used to limit the present application, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A scroll compressor characterized by, The back pressure adjusting mechanism (3) is arranged on the crankshaft (2), and can exert the back pressure on the moving scroll (1) in positive correlation with the rotating speed of the crankshaft (2). The crankshaft (2) penetrates the upper support and is connected with the moving scroll (1), and the back pressure adjusting mechanism (3) is arranged in the upper support. The back pressure adjusting mechanism (3) comprises a supporting part (31) and a conducting body, the conducting body has a lifting part, the supporting part (31) is between the lifting part and the moving scroll (1), and the conducting body can slide in the upper support to lift the supporting part (31) by the lifting part, and the lifted supporting part (31) exerts the back pressure on the moving scroll (1).

2. The scroll compressor of claim 1, wherein The lifting part comprises a first inclined surface, the supporting part (31) has a second inclined surface matched with the first inclined surface, the first inclined surface abuts against the second inclined surface, and the height of the first inclined surface gradually decreases along the direction close to the supporting part (31).

3. The scroll compressor of claim 2, wherein, The back pressure adjusting mechanism (3) further comprises a top piece (32), a first end of the top piece (32) is slidably inserted on the crankshaft (2), the top piece (32) has a first arc-shaped surface protruding outward, the first arc-shaped surface is at a second end of the top piece (32), the conducting body is sleeved on the outer side of the crankshaft (2), the conducting body further has an inner circumferential side surface surrounding the crankshaft (2) once, when the crankshaft (2) drives the top piece (32) to rotate synchronously, the first arc-shaped surface abuts against the inner circumferential side surface and makes the conducting body slide in the upper support.

4. The scroll compressor of claim 3, wherein The plane of any cross section of the crankshaft (2) is a reference plane, and the vertical projection of the inner circumferential side surface in the reference plane is a circle.

5. The scroll compressor of claim 3, wherein The conducting body comprises a plurality of sliding pieces (33), the sliding pieces (33) have second arc-shaped surfaces recessed inward, each second arc-shaped surface is connected to form the inner circumferential side surface, and the first inclined surface is on the sliding pieces (33).

6. The scroll compressor of claim 5, wherein, The upper support has a bottom disc, the bottom disc is provided with a limiting groove (4) extending along the radial direction of the bottom disc, the sliding pieces (33) further have protruding parts (38) in the limiting groove (4), and the protruding parts (38) can only slide in the radial direction of the bottom disc in the limiting groove (4).

7. The scroll compressor according to any one of claims 3 to 6, wherein The back pressure adjusting mechanism (3) further comprises a sleeve body (34), the sleeve body (34) is sleeved on the crankshaft (2), the sleeve body (34) is provided with a insertion hole (35), and the first end of the top piece (32) is slidably inserted in the insertion hole (35).

8. The scroll compressor of claim 7, wherein, The number of the top pieces (32) is a plurality, and each top piece (32) is arranged at intervals around the sleeve body (34).

9. The scroll compressor of claim 8, wherein, The back pressure force adjusting mechanism (3) further comprises an elastic component (36) which is in the socket (35) and the first end of the elastic component (36) is connected with the inner wall of the socket (35) and the second end of the elastic component (36) is connected with the first end of the top piece (32).

10. The scroll compressor of claim 7, wherein, The outer peripheral wall of the sleeve (34) is provided with a groove (37), the top piece (32) has a first arc-shaped part which is at the second end of the top piece (32), the first arc-shaped surface is on the first arc-shaped part, and the first arc-shaped part is limited in the groove (37).

11. The scroll compressor of claim 1, wherein, The number of the support components (31) is two, and the two support components (31) are central symmetrical relative to the central axis of the crankshaft (2).

12. The scroll compressor of claim 1, wherein, Further comprising a static scroll (5) which cooperates with the dynamic scroll (1) to form a compression chamber, the dynamic scroll (1) has a base plate which is provided with a first air passage (6) and a second air passage (7), the first air passage (6) communicates with the compression chamber through the second air passage (7), the opening of the first air passage (6) is outside the compression chamber, and the opening of the second air passage (7) is inside the compression chamber.

13. An air conditioner characterized by comprising: The scroll compressor comprises the scroll compressor according to any one of claims 1 to 12.

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