Rotor type compressor

Abstract

The invention relates to the technical field of compressors, and particularly discloses a rotor type compressor which comprises a motor section, a pump body section and an oil pool section, the motor section comprises a shell, a stator and a rotor, the stator is fixedly connected to the inner wall of the shell, the stator is arranged on the periphery of the rotor in a sleeving mode and can drive the rotor to rotate, and the pump body section is used for compressing a refrigerant; the pump body section comprises an upper cylinder cover and a lower cylinder cover, the upper cylinder cover is connected to the shell, the oil pool section comprises a cover cap and refrigerating machine oil, the refrigerating machine oil is stored in the cover cap, and the lower cylinder cover is connected to the cover cap. The rotor type compressor is spatially divided into a three-section structure, namely the motor section, the pump body section and the oil pool section, during large-displacement operation of refrigerants, the outer diameter sizes of the motor section, the pump body section and the oil pool section can be reasonably customized, the rotor type compressor is not limited by the internal structure of the shell, a small-shell-diameter motor and a large-shell-diameter pump body can be combined, and the working efficiency is improved. Or the large-shell-diameter motor is combined with the small-shell-diameter pump body, so that the reliability of the whole structure is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and particularly to a rotary compressor. Background Art

[0002] A rotary compressor includes a housing, an electric motor assembly and a pump body section are accommodated inside the housing. The pump body section includes an upper cylinder head, at least one cylinder and a lower cylinder head, etc. The rotary compressor operates by using the rotational driving force of an electric motor. Specifically, the electric motor assembly is used to generate a rotational driving force, and the pump body section is used to compress refrigerant. The crankshaft passes through a through hole on the upper cylinder head of the compressor, its upper end is connected to the electric motor assembly, and its lower end is connected to the pump body section, transmitting the rotational driving force of the electric motor assembly to the pump body section for compressing refrigerant.

[0003] The existing refrigerant type of rotary compressors is mainly R32 (difluoromethane), but with the environmental protection requirements, it will gradually be replaced by R290 (propane) refrigerant. R290 is a natural hydrocarbon refrigerant that can be directly obtained from liquefied gas. Compared with R32, about twice the displacement is required for the same capacity, which is not matched with the structure of the existing rotary compressor. In order to meet the requirements of the large displacement of R290, currently, it is often developed on a small shell diameter platform to achieve an upper limit expansion of the displacement or an upper limit increase in the rotational speed of the crankshaft, but the overall structure change is large, and the reliability and stability are poor. Summary of the Invention

[0004] The purpose of the present invention is to provide a rotary compressor, which can solve the problem of poor reliability and stability of the structure of the existing rotary compressor for large displacement operating conditions.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a rotary compressor, including:

[0007] An electric motor section, the electric motor section includes a housing, a stator and a rotor. The stator is fixedly connected to the inner wall of the housing, the stator is sleeved on the outer periphery of the rotor, and can drive the rotor to rotate;

[0008] A pump body section, the pump body section is used to compress refrigerant, the pump body section includes an upper cylinder head and a lower cylinder head, and the upper cylinder head is connected to the housing;

[0009] An oil sump section, the oil sump section includes a cover and refrigeration oil, the refrigeration oil is stored in the cover, and the lower cylinder head is connected to the cover.

[0010] As a preferred technical solution of the above rotary compressor, the housing is connected to the upper end surface of the upper cylinder head, and the cover is connected to the lower end surface of the lower cylinder head.

[0011] As a preferred technical solution of the above-mentioned rotary compressor, the housing is fixedly connected to the upper end surface of the upper cylinder head by welding, and the cover is fixedly connected to the lower end surface of the lower cylinder head by welding.

[0012] As a preferred technical solution of the above-mentioned rotary compressor, a first thread is provided on the inner surface of the housing. Along the axial direction of the upper cylinder head, a convex portion facing the motor section is provided at the edge of the upper end surface of the upper cylinder head. A second thread matching the first thread is provided on the outer surface of the convex portion, and the housing is threadedly connected to the upper cylinder head.

[0013] As a preferred technical solution of the above-mentioned rotary compressor, the rotary compressor further includes a plurality of locking members, and the plurality of locking members are all used to limit the relative movement between the housing and the upper end surface of the upper cylinder head.

[0014] As a preferred technical solution of the above-mentioned rotary compressor, the cover is fixedly connected to the lower end surface of the lower cylinder head, and a mounting seat is provided on the cover.

[0015] As a preferred technical solution of the above-mentioned rotary compressor, a first gasket is provided between the housing and the upper end surface of the upper cylinder head, and a second gasket is provided between the cover and the lower end surface of the lower cylinder head.

[0016] As a preferred technical solution of the above-mentioned rotary compressor, the pump body section further includes a plurality of cylinders, a plurality of pistons, a plurality of intermediate plates and a crankshaft. The plurality of cylinders are encapsulated between the upper cylinder head and the lower cylinder head. The plurality of pistons are arranged in one-to-one correspondence with the plurality of cylinders, and the pistons are rollingly arranged in the cylinders. The intermediate plates are encapsulated between two adjacent cylinders. The pump body section is provided with an intake passage, and the intake passage communicates with the plurality of cylinders and the plurality of intermediate plates. An intake hole communicating with the intake passage is provided on the upper cylinder head, and the intake hole is used to convey refrigerant into the intake passage. The rotor is drivingly connected to the crankshaft and can drive the crankshaft to rotate. The crankshaft is sequentially connected to the plurality of pistons and can drive the pistons to roll in the corresponding cylinders. Each intermediate plate is provided with a plurality of exhaust holes and an exhaust passage communicating with the plurality of exhaust holes, and the exhaust passage is used to discharge the compressed refrigerant in two adjacent cylinders.

[0017] As a preferred technical solution of the above-mentioned rotary compressor, the intermediate plate includes an upper intermediate plate and a lower intermediate plate. The exhaust passage includes a first exhaust passage and a second exhaust passage. The first exhaust passage is arranged on the upper intermediate plate, and the second exhaust passage is arranged on the lower intermediate plate. The number of exhaust holes is two. One of the exhaust holes is a first exhaust hole, and the other exhaust hole is a second exhaust hole. The first exhaust hole is arranged on the upper intermediate plate, and the second exhaust hole is arranged on the lower intermediate plate. The number of cylinders is two. One of the cylinders is a first cylinder, and the other cylinder is a second cylinder. The first cylinder is arranged between the upper intermediate plate and the upper cylinder head, and the second cylinder is arranged between the lower intermediate plate and the lower cylinder head. The first exhaust hole communicates the first cylinder with the first exhaust passage, and the second exhaust hole communicates the second cylinder with the second exhaust passage.

[0018] As a preferred technical solution of the above-mentioned rotary compressor, the motor section further includes a housing cover, which is fixedly connected to the top end of the housing, and an air inlet pipe communicating with the housing is provided on the housing cover.

[0019] The beneficial effects of the present invention are as follows:

[0020] The present invention provides a rotary compressor, which includes a motor section, a pump body section and an oil sump section. The motor section includes a housing, a stator and a rotor. The stator is fixedly connected to the inner wall of the housing, the stator is sleeved on the outer periphery of the rotor and can drive the rotor to rotate. The pump body section is used for compressing the refrigerant, and the pump body section includes an upper cylinder head and a lower cylinder head. The upper cylinder head is connected to the housing. The oil sump section includes a cover and refrigeration oil, and the refrigeration oil is stored in the cover. The lower cylinder head is connected to the cover. With such a setting, different from the existing rotary compressor that arranges the motor assembly and the pump body section inside the housing, the rotary compressor is spatially divided into a three-section structure, namely the motor section, the pump body section and the oil sump section. When meeting the large-displacement operation requirements for the refrigerant, the outer diameter sizes of the motor section, the pump body section and the oil sump section structures can be reasonably customized, and the outer diameters of the three can be different, and it is not restricted by the internal structure of the housing. It can realize the combination of a small-shell-diameter motor and a large-shell-diameter pump body, or the combination of a large-shell-diameter motor and a small-shell-diameter pump body to complete the large-displacement operation requirements, while reducing the production cost, and effectively improving the reliability and stability of its overall structure. Description of the Drawings

[0021] Figure 1 is a cross-section of the rotary compressor provided by the present invention Figure 1 ;

[0022] Figure 2 is a cross-section of the rotary compressor provided by the present invention Figure 2 ;

[0023] Figure 3 The cross-section of the rotary compressor provided by the present invention Figure 3 .

[0024] Wherein:

[0025] 1. Motor section; 101. Housing; 102. Stator; 103. Housing cover; 104. Rotor;

[0026] 2. Pump body section; 201. Cylinder; 202. Piston; 203. Intermediate plate; 2031. Upper intermediate plate; 2032. Lower intermediate plate; 204. Upper cylinder head; 2041. Protrusion; 205. Lower cylinder head; 206. Crankshaft;

[0027] 3. Oil sump section; 301. Cover; 3011. Boss; 302. Refrigeration oil;

[0028] 4. Mounting seat; 5. Intake passage; 6. Intake hole; 7. Exhaust passage; 71. First exhaust passage; 72. Second exhaust passage; 8. Inlet pipe; 9. Exhaust pipe. Detailed implementation manners

[0029] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0030] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0031] Unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly under and obliquely under the second feature, or merely indicating that the first feature has a lower horizontal height than the second feature.

[0033] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0034] As Figures 1 to 2 shown, this embodiment provides a rotary compressor, which includes a motor section 1, a pump body section 2 and an oil sump section 3. The motor section 1 includes a housing 101, a stator 102 and a rotor 104. The stator 102 is fixedly connected to the inner wall of the housing 101. The stator 102 is sleeved on the outer periphery of the rotor 104 and can drive the rotor 104 to rotate. The pump body section 2 is used for compressing refrigerant. The pump body section 2 includes an upper cylinder head 204 and a lower cylinder head 205. The upper cylinder head 204 is connected to the housing 101. The oil sump section 3 includes a cover 301 and refrigeration oil 302. The refrigeration oil 302 is stored in the cover 301. The lower cylinder head 205 is connected to the cover 301. In this embodiment, the refrigerant is specifically R290. In other embodiments, the type of refrigerant can also be set according to specific requirements and will not be further limited herein. With such a setting, different from the existing rotary compressor that arranges the motor assembly and the pump body section 2 inside the housing 101, the rotary compressor is spatially divided into a three-section structure, namely the motor section 1, the pump body section 2 and the oil sump section 3. When meeting the large-displacement operation requirements for the refrigerant, the outer diameter dimensions of the structures of the motor section 1, the pump body section 2 and the oil sump section 3 can be reasonably customized, and the outer diameters of the three can be made different. It is not restricted by the internal structure of the housing 101, and can realize the combination of a small-shell-diameter motor and a large-shell-diameter pump body, or the combination of a large-shell-diameter motor and a small-shell-diameter pump body to meet the large-displacement operation requirements, while reducing production costs and effectively improving the reliability and stability of its overall structure.

[0035] Optionally, the housing 101 is connected to the upper end surface of the upper cylinder head 204, and the cover 301 is connected to the lower end surface of the lower cylinder head 205.

[0036] Optionally, the housing 101 is fixedly connected to the upper end surface of the upper cylinder head 204 by welding, and the cover 301 is fixedly connected to the lower end surface of the lower cylinder head 205 by welding. In this embodiment, the housing 101 is cylindrical, the upper cylinder head 204 is provided with a boss, and the circumferential bottom surface of the housing 101 is fixedly connected to the boss on the upper cylinder head 204 by laser welding. Similarly, the cover 301 is cylindrical, and the circumferential top surface of the cover 301 is also fixedly connected to the lower cylinder head 205 by laser welding.

[0037] As an alternative solution, please refer to Figure 3 As shown, a first thread is provided on the inner surface of the housing 101. Along the axial direction of the upper cylinder head (204), a convex portion (2041) facing the motor section (1) is provided at the edge of the upper end surface of the upper cylinder head 204. A second thread that mates with the first thread is provided on the outer surface of the convex portion (2041), and the housing 101 is threadedly connected to the upper cylinder head 204. Further, in order to prevent the connection between the motor section 1 and the pump section 2 from becoming loose during the operation of the rotary compressor, the rotary compressor further includes a plurality of locking members, and the plurality of locking members are all used to limit the relative movement between the housing 101 and the upper cylinder head 204. Specifically, the following solution is exemplarily given in this embodiment: Two long bolts pass through the pump section 2 and are threadedly connected to the housing 101.

[0038] Optionally, refer to Figure 3 As shown, in order to facilitate the installation of the overall structure of the rotary compressor, the cover 301 is fixedly connected to the lower end surface of the lower cylinder head 205. Specifically, in this embodiment, along the radial direction of the cover 301, a boss 3011 is provided at the open end of the cover 301, and the cover 301 is fixedly connected to the lower end surface of the lower cylinder head 205 through the boss 3011 and a plurality of long bolts. An installation seat 4 is provided on the cover 301. Of course, in other embodiments, the cover 301 and the lower cylinder head 205 can also be set as a detachable connection structure. Specifically, a third thread is provided on the inner surface of the cover 301, and a fourth thread that mates with the third thread is provided on the outer surface of the lower cylinder head 205, and the cover 301 is threadedly connected to the lower cylinder head 205.

[0039] Optionally, in order to ensure the sealing effect between every two sections of the motor section 1 and the pump section 2, and between the pump section 2 and the oil sump section 3, a first gasket is provided between the housing 101 and the upper cylinder head 204, and a second gasket is provided between the cover 301 and the lower cylinder head 205.

[0040] Optionally, the pump body section 2 includes a plurality of cylinders 201, a plurality of pistons 202, a plurality of intermediate plates 203 and a crankshaft 206. The plurality of cylinders 201 are encapsulated between the upper cylinder head 204 and the lower cylinder head 205. The plurality of pistons 202 are arranged in one-to-one correspondence with the plurality of cylinders 201, and the pistons 202 are rotatably arranged in the cylinders 201. The intermediate plates 203 are encapsulated between two adjacent cylinders 201. The pump body section 2 is provided with an intake passage 5, and the intake passage 5 communicates with the plurality of cylinders 201 and the plurality of intermediate plates 203. The upper cylinder head 204 is provided with an intake hole 6 communicating with the intake passage 5, and the intake hole 6 is used to convey the refrigerant into the intake passage 5. The rotor 104 is drivingly connected to the crankshaft 206 and can drive the crankshaft 206 to rotate. The crankshaft 206 is sequentially connected to the plurality of pistons 202 and can drive the pistons 202 to roll in the corresponding cylinders 201. Each intermediate plate 203 is provided with a plurality of exhaust holes and an exhaust passage 7 communicating with the plurality of exhaust holes. The exhaust passage 7 is used to discharge the compressed refrigerant in two adjacent cylinders 201. With such an arrangement, the refrigerant enters the intake passage 5 through the intake hole 6. Since the intake passage 5 is in series and communicates with the plurality of cylinders 201 and the plurality of intermediate plates 203, the refrigerant can correspondingly enter each cylinder 201. The crankshaft 206 drives the pistons 202 to compress the refrigerant in the corresponding cylinders 201. The compressed refrigerant in two adjacent cylinders 201 is conveyed to the exhaust passage 7 through the plurality of exhaust holes on the intermediate plate 203.

[0041] Optionally, the rotary compressor further includes an exhaust pipe 9. The exhaust pipe 9 communicates with the exhaust passage 7 on each intermediate plate 203 and combines the compressed refrigerant discharged from each cylinder 201 through the exhaust holes and conveys it into the exhaust pipe 9 through the exhaust passage 7 for delivery to the system.

[0042] Optionally, one end of the crankshaft 206 is provided with a pump oil hole and extends into the cover 301. A plurality of oil outlet holes communicating with the pump oil hole are provided on the side wall of the crankshaft 206. When the crankshaft 206 rotates, a certain negative pressure can be formed at both ends of the crankshaft 206. Under the action of the pressure difference, the refrigeration oil 302 can be sucked into the pump oil hole passage and finally enter the cylinder 201 through the plurality of oil outlet holes, so as to lubricate the sliding parts in the cylinder 201, thereby improving the performance and reliability of the rotary compressor.

[0043] Optionally, the middle plate 203 includes an upper middle plate 2031 and a lower middle plate 2032. The exhaust passage 7 includes a first exhaust passage 71 and a second exhaust passage 72. The first exhaust passage 71 is disposed on the upper middle plate 2031, and the second exhaust passage 72 is disposed on the lower middle plate 2032. The number of exhaust holes is two. One of the exhaust holes is the first exhaust hole, and the other exhaust hole is the second exhaust hole. The first exhaust hole is disposed on the upper middle plate 2031, and the second exhaust hole is disposed on the lower middle plate 2032. The number of cylinders 201 is two. One of the cylinders 201 is the first cylinder, and the other cylinder 201 is the second cylinder. The first cylinder is disposed between the upper middle plate 2031 and the upper cylinder head 204, and the second cylinder is disposed between the lower middle plate 2032 and the lower cylinder head 205. The first exhaust hole communicates the first cylinder with the first exhaust passage 71, and the second exhaust hole communicates the second cylinder with the second exhaust passage 72. With such a setting, the refrigerant enters the intake passage 5 through the intake hole 6 and then enters the first cylinder and the second cylinder. The compressed refrigerant is respectively conveyed to the first exhaust passage 71 and the second exhaust passage 72 through the first exhaust hole and the second exhaust hole, and finally converges into the exhaust pipe 9.

[0044] Of course, in other embodiments, the number of cylinders 201 can also be set according to actual operation requirements, and no further limitation is made here.

[0045] Optionally, the motor section 1 further includes a housing cover 103. The housing cover 103 is fixedly connected to the top end of the housing 101, and an intake pipe 8 communicating with the housing 101 is provided on the housing cover 103.

[0046] Optionally, the upper cylinder head 204 and the housing 101 are integrally formed. With such a setting, the number of components is effectively reduced, the production efficiency is high, and the overall stability of the integrally formed structure of the upper cylinder head 204 and the housing 101 is better.

[0047] Obviously, the above-mentioned embodiments of the present invention are merely examples for clearly explaining the present invention, rather than limiting the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A rotary compressor, characterized in that: include: A motor section (1), the motor section (1) comprising a housing (101), a stator (102) and a rotor (104), the stator (102) being fixedly connected to the inner wall of the housing (101), the stator (102) being sleeved on the outer circumference of the rotor (104) and being capable of driving the rotor (104) to rotate; A pump body section (2), the pump body section (2) being used for compressing a refrigerant, the pump body section (2) comprising an upper cylinder cover (204) and a lower cylinder cover (205), the upper cylinder cover (204) being connected to the housing (101); The oil pool section (3) comprises a cover (301) and refrigeration oil (302), the refrigeration oil (302) is stored in the cover (301), and the lower cylinder cover (205) is connected to the cover (301).

2. The rotary compressor according to claim 1, characterized in that: The housing (101) is connected to the upper end surface of the upper cylinder cover (204), and the cover (301) is connected to the lower end surface of the lower cylinder cover (205).

3. The rotary compressor according to claim 2, characterized in that: The housing (101) is fixedly connected to the upper end surface of the upper cylinder cover (204) by welding, and the cover (301) is fixedly connected to the lower end surface of the lower cylinder cover (205) by welding.

4. The rotary compressor according to claim 2, characterized in that: A first thread is provided on the inner surface of the shell (101); in the axial direction of the upper cylinder cover (204), a protrusion (2041) facing the motor section (1) is provided on the edge of the upper end surface of the upper cylinder cover (204); a second thread matching the first thread is provided on the outer surface of the protrusion (2041); and the shell (101) is threadedly connected to the upper cylinder cover (204).

5. The rotary compressor according to claim 4, characterized in that: The rotary compressor further comprises a plurality of locking members, each of which is used to limit the relative movement between the housing (101) and the upper end surface of the upper cylinder cover (204).

6. The rotary compressor according to claim 4, characterized in that: The cover (301) is fixedly connected to the lower end surface of the lower cylinder cover (205), and a mounting seat (4) is provided on the cover (301).

7. The rotary compressor according to claim 2, characterized in that: A first sealing gasket is provided between the housing (101) and the upper end surface of the upper cylinder cover (204), and a second sealing gasket is provided between the cover (301) and the lower end surface of the lower cylinder cover (205).

8. The rotary compressor according to any one of claims 1 to 7, characterized in that: The pump body section (2) further comprises a plurality of cylinders (201), a plurality of pistons (202), a plurality of intermediate plates (203) and a crankshaft (206); the plurality of cylinders (201) are encapsulated between the upper cylinder cover (204) and the lower cylinder cover (205); the plurality of pistons (202) and the plurality of cylinders (201) are arranged in a one-to-one correspondence, and the pistons (202) are arranged in a rolling manner in the cylinders (201); the intermediate plates (203) are encapsulated between two adjacent cylinders (201); the pump body section (2) is provided with an air intake channel (5); the air intake channel (5) is connected to the plurality of cylinders (201) and the plurality of intermediate plates (203); An air inlet hole (6) connected to the air inlet passage (5) is provided on the upper cylinder cover (204), and the air inlet hole (6) is used to transport refrigerant into the air inlet passage (5). The rotor (104) is connected to the crankshaft (206) in a transmission manner and can drive the crankshaft (206) to rotate. The crankshaft (206) is connected to a plurality of pistons (202) in sequence and can drive the pistons (202) to roll in the corresponding cylinders (201). Each of the intermediate plates (203) is provided with a plurality of exhaust holes and an exhaust passage (7) connected to the plurality of exhaust holes. The exhaust passage (7) is used to discharge the compressed refrigerant in two adjacent cylinders (201).

9. The rotary compressor according to claim 8, characterized in that: The middle plate (203) comprises an upper middle plate (2031) and a lower middle plate (2032); the exhaust channel (7) comprises a first exhaust channel (71) and a second exhaust channel (72); the first exhaust channel (71) is arranged on the upper middle plate (2031); the second exhaust channel (72) is arranged on the lower middle plate (2032); the number of the exhaust holes is two, one of the exhaust holes is a first exhaust hole, the other of the exhaust holes is a second exhaust hole, the first exhaust hole is arranged on the upper middle plate (2031), the second exhaust hole The cylinder (201) is arranged on the lower middle plate (2032), the number of the cylinders (201) is two, one of the cylinders (201) is a first cylinder, the other of the cylinders (201) is a second cylinder, the first cylinder is arranged between the upper middle plate (2031) and the upper cylinder cover (204), the second cylinder is arranged between the lower middle plate (2032) and the lower cylinder cover (205), the first exhaust hole connects the first cylinder and the first exhaust channel (71), and the second exhaust hole connects the second cylinder and the second exhaust channel (72).

10. The rotary compressor according to any one of claims 1 to 7, characterized in that: The motor section (1) further comprises a shell cover (103), wherein the shell cover (103) is fixedly connected to the top end of the shell body (101), and an air intake pipe (8) communicating with the shell body (101) is provided on the shell cover (103).

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