A new type of swinging rotor compressor with a low-pressure cavity inside the housing

Abstract

The present invention discloses a novel swing rotor compressor with a low-pressure cavity inside the housing, which includes a housing and a pump body. The pump body includes a cylinder assembly, and a crankshaft is sleeved on the cylinder assembly. An electric motor is sleeved above the crankshaft. The pump body further includes a swing rotor disposed inside the cylinder assembly. The swing rotor is connected to the cylinder assembly through a sliding vane, and the swing rotor and the sliding vane divide the inner cavity of the cylinder assembly into a first compression chamber and a second compression chamber. The first compression chamber is connected to a suction silencing chamber through an intake passage. The second compression chamber is connected to an integrated exhaust cover assembly through an exhaust passage, and the exhaust cover assembly is connected to a housing exhaust pipe through an internal exhaust coil. This compressor has low vibration, low noise, high refrigerating capacity, and excellent starting performance.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and particularly to a novel swing rotor compressor with a low-pressure chamber inside the housing. Background Art

[0002] A compressor is a driven fluid machine that raises low-pressure gas to high-pressure gas and is the heart of a refrigeration system. It sucks in low-temperature and low-pressure refrigerant gas from the suction pipe, compresses it by driving a piston through the operation of an electric motor, and then discharges the high-temperature and high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle.

[0003] All components on a hermetic rotor compressor are usually in rigid contact. Metal materials are used for the suction and exhaust pipe fittings, various pipe joints, etc. As the service life of the compressor increases or it operates at full load for a long time, it will cause the compressor to vibrate violently, and the rigidly connected components directly bear the vibration, resulting in relatively large noise.

[0004] For example, the main bearing or cylinder block of an existing hermetic rotor compressor is rigidly connected to the stator of the electric motor and the hermetic housing without a vibration damping and buffering structure, and the vibration and noise of the compressor are relatively large. Due to the large vibration and noise, rotor compressors are usually used in air conditioners and commercial refrigeration. To be used in household refrigerators, the existing structure must be changed.

[0005] Moreover, the existing rotor compressor directly sucks air from outside the compressor, and the high-pressure gas is directly discharged into the housing. The inside of the housing is a high-pressure chamber and the temperature is relatively high, resulting in a reduction in cooling capacity. Summary of the Invention

[0006] The purpose of the present invention is to provide a novel swing rotor compressor with a low-pressure chamber inside the housing in view of the problems existing in the prior art.

[0007] To achieve the above purpose, the technical solution adopted by the present invention is:

[0008] A new type of swing rotor compressor with a low-pressure cavity inside the housing, including a housing, a pump body is installed inside the housing, the pump body includes a cylinder assembly, a crankshaft is sleeved on the cylinder assembly, and a motor is sleeved above the crankshaft; the pump body also includes a swing rotor arranged inside the cylinder assembly, the swing rotor is sleeved with the crankshaft; the swing rotor is connected to the cylinder assembly through a sliding vane, and the swing rotor and the sliding vane divide the inner cavity of the cylinder assembly into a first compression chamber and a second compression chamber; the first compression chamber is connected with a suction silencing chamber through an intake passage, one end of the suction silencing chamber is connected to the cylinder assembly in a direct insertion manner, and the other end is communicated with the low-pressure cavity inside the housing; the second compression chamber is connected to an integrated exhaust cover assembly through an exhaust passage (on the cylinder assembly), and the exhaust cover assembly is connected to the housing exhaust pipe through an internal exhaust coil to form an overall exhaust passage, and the pump body (core) is connected to the housing through an elastic support member.

[0009] By placing the pump body composed of the cylinder assembly, the crankshaft, the swing rotor, the motor, etc. on the elastic support member, this compressor avoids the direct transmission of noise and vibration to the housing, reducing noise and vibration; moreover, an exhaust cover assembly is provided at the exhaust end, solving the problems of large vibration and large exhaust noise of the rotor compressor; the compressed high-temperature gas is directly discharged outside the housing through the exhaust cover assembly and the internal exhaust coil, which can keep the temperature and pressure inside the housing from rising, and the refrigerant gas is directly sucked into the housing by the suction silencing chamber, which can improve the refrigerating capacity and has excellent starting performance.

[0010] For the compressor with this structural arrangement, compared with a piston compressor of the same displacement, the cooling capacity is significantly increased; it not only has less noise and vibration than the existing rotor compressor, but also has much less noise than a piston compressor of the same displacement.

[0011] For this compressor, due to the reasonable arrangement of sound absorption and noise reduction and intake and exhaust, the vibration is well controlled and the noise is small. This structure is suitable for low-back-pressure compressors and is suitable for use in household refrigerators, which can improve the user experience.

[0012] Through the setting of the integrated noise reduction exhaust cover assembly, when the gas is discharged from the cylinder, it experiences the multi-stage expansion chambers formed by the cylinder head and the exhaust cavity for expansion and contraction, achieving the purpose of multi-stage noise reduction of the gas, thereby reducing the exhaust noise; moreover, the cylinder head can not only play the role of connection and fixation, restricting the movement of the exhaust limit plate, but also eliminate a part of the exhaust noise.

[0013] Through the setting of the direct insertion type suction silencing chamber, the assembly steps can be simplified, and it is firmly fixed and easy to install; it can also prevent oil drainage from increasing.

[0014] Further, the cylinder assembly includes a cylinder block, an upper cylinder head, and a lower cylinder head that are connected to each other. The cylinder block, the upper cylinder head, and the lower cylinder head enclose to form the inner cavity. A horizontal intake passage is provided on the cylinder block. An insertion opening communicating with the intake passage is provided on the cylinder block. The outlet pipe of the intake silencing cavity is directly inserted into the insertion opening and is screwed and fixed to the upper cylinder head.

[0015] Further, a through groove is vertically penetrated on the cylinder block on one side of the intake passage. The horizontal cross-section of the through groove is gourd-shaped. A swing sliding vane is provided in the through groove close to the inner cavity side. The swing rotor is arranged in the inner cavity. One end of the sliding vane is fixedly connected to the swing rotor, and the other end passes through the swing sliding vane and extends into the through groove.

[0016] Further, the upper cylinder head and the lower cylinder head are respectively screwed on the upper and lower sides of the cylinder block. The upper and lower end faces of the swing rotor and the sliding vane are respectively in oil-sealed contact with the upper cylinder head and the lower cylinder head. The length of the sliding vane is adapted to the horizontal length of the through groove.

[0017] Further, an engaging groove is axially provided on the outer circumference of the swing rotor. The radial cross-section of the engaging groove is I-shaped. Grooves are symmetrically provided on both sides of the end of the sliding vane. The grooves are adapted to the engaging groove, and the end of the sliding vane is engaged in the engaging groove.

[0018] With the setting of the swing rotor and the sliding vane, there is a tight surface contact between the two, and the leakage amount is small. The friction between the rotor and the sliding vane is very small or even non-existent. It can greatly reduce mechanical wear. Through the left-right symmetric double compression chambers, the compression loss of the refrigerant can be effectively reduced in a smooth and continuous compression manner, thereby obtaining higher energy efficiency.

[0019] By means of oil seal, it can ensure that a sealing end face is formed between the swing rotor and the sliding vane and the upper cylinder head and the lower cylinder head, reduce the mutual leakage between the high-pressure and low-pressure areas, and improve the compression effect.

[0020] Further, the intake silencing cavity is divided into an upper silencing cavity and a lower silencing cavity by a transverse partition. A communication hole is provided on the transverse partition. An intake outlet pipe is provided on the side of the lower silencing cavity away from the upper silencing cavity. The intake outlet pipe is arranged close to the outer edge of the lower silencing cavity. Installation parts are respectively provided on both sides of the intake outlet pipe. A plurality of installation holes are provided on the installation parts. A direct-insert type intake air outlet is provided at the end of the intake outlet pipe. An intake pipe is connected to the side of the upper silencing cavity. The pipe orifice of the intake pipe is arranged close to the intake pipe of the housing.

[0021] By setting a plug-in air intake and outlet pipe, the air intake and outlet can be directly inserted into the air intake passage of the cylinder block, and the entire air intake silencer cavity can be fixed on the upper cylinder head of the compressor through the mounting part and the mounting holes. The protruding mounting part is convenient for close cooperation with the upper cylinder head, and the mounting holes can be directly screwed and fixed to the upper cylinder head using screws. Setting the mounting part at the edge of the air intake silencer cavity also facilitates contact and connection with the cylinder block and the upper cylinder head.

[0022] Furthermore, the air intake and outlet is cylindrical, and the air intake and outlet is arranged coaxially with the air intake and outlet pipe and is perpendicular to the end face of the lower silencer cavity; several vertical partitions perpendicular to the transverse partition are also provided in the upper silencer cavity, and the vertical partitions divide the upper silencer cavity into several connected silencer chambers, and at least one of the silencer chambers is connected to the air intake pipe.

[0023] During operation, the gas in the compressor housing is inhaled into the upper silencer cavity from the air intake pipe. The gas expands and buffers in multiple chambers of the upper silencer cavity, and the airflow noise is reduced. The gas after noise reduction enters the lower silencer cavity through the communication hole. Under the further sound absorption and noise reduction effect of the lower silencer cavity, the gas enters the cylinder block from the air intake and outlet pipe and the air intake and outlet. The gas noise entering the cylinder block is significantly controlled, and there is no obvious low-frequency noise. This structure can eliminate the intake pulsation, has an obvious effect on low-frequency noise below 1000Kz, and has a good sound absorption and noise reduction effect.

[0024] Furthermore, the exhaust cover assembly includes a cylinder connection cover and an exhaust silencer cover connected as a whole; the inside of the exhaust silencer cover is divided into multiple exhaust chambers by partitions, and the partitions are provided with insertion pipes to communicate adjacent exhaust chambers; one side of the exhaust chamber is connected to the internal exhaust coil pipe, and the other side of the exhaust chamber is connected to the cylinder connection cover through a connecting pipe.

[0025] Furthermore, the cylinder connection cover has an inner cavity, and the connecting pipe is connected and inserted into the inner cavity; the cylinder connection cover and the exhaust silencer cover are respectively screwed and fixed on the cylinder assembly, and the inner cavity of the cylinder connection cover communicates with the exhaust passage.

[0026] The setting of these cavities enables the discharged gas to be diffused and buffered in each cavity, reducing the airflow velocity and impact force. After the airflow is alleviated, it is discharged, and the exhaust noise is significantly reduced.

[0027] Furthermore, the elastic support member includes an inner support pin disposed on the inner bottom plate or side wall of the housing. A spring support block is sleeved on the inner support pin, and a compression spring or a tension spring is provided on the spring support block. The other end of the compression spring or the tension spring is also connected to the cylinder assembly through the spring support block. A housing suction pipe is provided on the housing on the same side as the housing exhaust pipe, and a process pipe is provided on the other side. The inner exhaust coil is serpentinely bent and distributed inside the housing.

[0028] By using elastic support members such as spring support blocks and compression springs, the rigid contact between the pump body and the housing can be isolated, reducing rigid collisions and having good effects on shock absorption, buffering and noise reduction.

[0029] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this compressor, the pump body composed of the cylinder assembly, the crankshaft, the oscillating rotor, the motor, etc. is placed on the elastic support member, avoiding direct transmission of noise and vibration to the housing and reducing noise and vibration. Moreover, an exhaust cover assembly is provided at the exhaust end, solving the problems of large vibration and large exhaust noise of the rotary compressor. The high-temperature gas is directly discharged outside the housing, capable of keeping the temperature and pressure inside the housing from rising, improving the refrigerating capacity and having excellent starting performance. 2. For the compressor with this structural arrangement, compared with a piston compressor of the same displacement, the cooling capacity is significantly increased. It not only has less noise and vibration than the existing rotary compressor, but also has much less noise than a piston compressor of the same displacement. 3. In this compressor, due to the reasonable arrangement of sound absorption and noise reduction and intake and exhaust, the vibration is well controlled and the noise is small. This structure is applicable to low back-pressure compressors and suitable for use in household refrigerators, capable of improving the user experience. 4. The setting of the direct-insert type suction silencing cavity can be directly inserted into the cylinder block of the compressor and connected to the upper cylinder head, simplifying the assembly steps, being firmly fixed and convenient for installation. 5. The setting of the integrated noise reduction exhaust cover assembly can not only play a role in connection and fixation, restricting the movement of the exhaust limit plate, but also reduce the exhaust noise. 6. By using the setting of the oscillating rotor and the sliding vane, they are in close contact with each other, with a small leakage amount, and the friction between the rotor and the sliding vane is very small or even non-existent, capable of greatly reducing mechanical wear. With a smooth and continuous compression method, the compression loss of the refrigerant is effectively reduced, thereby obtaining higher energy efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a top view (partial section) structural schematic diagram of a novel oscillating rotor compressor with a low-pressure cavity inside the housing according to the present invention;

[0031] Figure 2 It is an A-A structural schematic diagram of a novel oscillating rotor compressor with a low-pressure cavity inside the housing according to the present invention;

[0032] Figure 3Schematic diagram of the overall side view with partial section of a new type of swinging rotor compressor with a low-pressure cavity inside the housing according to the present invention Figure 1 ;

[0033] Figure 4 Schematic diagram of the overall side view with partial section of a new type of swinging rotor compressor with a low-pressure cavity inside the housing according to the present invention Figure 2 ;

[0034] Figure 5 Schematic diagram of the swinging rotor and sliding vane structure of a new type of swinging rotor compressor with a low-pressure cavity inside the housing according to the present invention;

[0035] Figure 6 Schematic diagram of the enlarged connection structure of the swinging rotor and sliding vane of a new type of swinging rotor compressor with a low-pressure cavity inside the housing according to the present invention;

[0036] Figure 7 Schematic diagram of the structure of the suction silencing cavity of a new type of swinging rotor compressor with a low-pressure cavity inside the housing according to the present invention;

[0037] Figure 8 Schematic diagram of the sectional structure of the suction silencing cavity of a new type of swinging rotor compressor with a low-pressure cavity inside the housing according to the present invention;

[0038] Figure 9 Schematic diagram of the structure of the exhaust cover assembly of a new type of swinging rotor compressor with a low-pressure cavity inside the housing according to the present invention;

[0039] Figure 10 Perspective structure schematic diagram of the exhaust cover assembly of a new type of swinging rotor compressor with a low-pressure cavity inside the housing according to the present invention;

[0040] Figure 11 Schematic diagram of the structure of the cylinder connection cover of the exhaust cover assembly of a new type of swinging rotor compressor with a low-pressure cavity inside the housing according to the present invention;

[0041] Figure 12 Schematic diagram of the installation structure of the exhaust cover assembly of a new type of swinging rotor compressor with a low-pressure cavity inside the housing according to the present invention;

[0042] In the figure: 1. Machine housing; 2. Elastic support member; 201. Inner support pin; 202. Compression spring support block; 203. Compression spring; 3. Crankshaft; 4. Motor; 5. Cylinder block; 6. Lower cylinder head; 7. Upper cylinder head; 8. Oscillating rotor; 801. Engaging groove; 9. Sliding vane; 901. Groove; 10. Intake passage; 11. Insertion port; 12. Suction silencing chamber; 1201. Lower silencing chamber; 1202. Upper silencing chamber; 1202a. First silencing chamber; 1202b. Second silencing chamber; 1203. Suction pipe; 1204. Suction outlet pipe; 1205. Suction outlet; 1206. Mounting portion; 1207. Mounting hole; 13. Exhaust cover assembly; 1301. Cylinder connection cover; 1302. Exhaust silencing cover; 1303. Connecting pipe; 1304. Exhaust connection pipe; 1305. Partition board; 1306. Insertion pipe; 1307. Protrusion structure; 1308. Flange edge; 1309. Inner cavity body; 1310. Connecting lug; 14. Inner exhaust coil pipe; 15. Housing exhaust pipe; 16. Housing suction pipe; 17. Process pipe; 19. Through groove; 20. Rocking sliding vane; 21. Horizontal partition board; 2101. Communication hole; 2102. Mounting frame; 2103. Filter mesh sheet; 22. Vertical partition board; 23. Elbow pipe; 24. Inlet and outlet holes. Detailed implementation mode

[0043] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work conditions belong to the protection scope of the present invention.

[0044] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It 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 cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0045] Embodiment 1:

[0046] As Figures 1 to 6As shown in the figure, a new type of swing rotor compressor with a low-pressure cavity inside the housing includes a housing 1. Inside the housing 1, a pump body is installed through a number of elastic support members 2. The pump body includes a cylinder assembly, on which a crankshaft 3 is sleeved. Above the crankshaft 3, a motor 4 is sleeved. The pump body also includes a swing rotor 8 arranged inside the cylinder assembly, and the swing rotor 8 is sleeved with the crankshaft 3. The swing rotor 8 is connected to the cylinder assembly through a sliding vane 9 (see Figure 5 ). The swing rotor 8 and the sliding vane 9 divide the inner cavity of the cylinder assembly into a first compression chamber and a second compression chamber. The first compression chamber is connected to a suction silencing chamber 12 through an intake passage 10. The lower end of the suction silencing chamber 12 is connected to the cylinder assembly in a direct insertion manner, and the upper end is communicated with the inside of the housing 1. The second compression chamber is connected to an integrated exhaust cover assembly 13 through an exhaust passage (not shown in the figure), and the exhaust cover assembly 13 is connected to a housing exhaust pipe 15 through an internal exhaust coil 14.

[0047] In this compressor, the pump body composed of the cylinder assembly, the crankshaft 3, the swing rotor 8, the motor 4, etc. is placed on the elastic support members 2, avoiding direct transmission of noise and vibration to the housing 1 and reducing noise and vibration. Moreover, an exhaust cover assembly 13 (with an exhaust silencing chamber) is provided at the exhaust end, solving the problems of large vibration and large exhaust noise of the rotor compressor. The compressed high-temperature gas is directly discharged outside the housing 1 through the exhaust cover assembly 13 and the internal exhaust coil 14, capable of keeping the temperature and pressure inside the housing 1 from rising. The refrigerant gas is directly sucked into the housing 1 by the suction silencing chamber 12, capable of improving the refrigerating capacity and having excellent starting performance.

[0048] For the compressor with this structural arrangement, compared with a piston compressor of the same displacement, the cooling capacity is significantly increased; it not only has less noise and vibration than the existing rotor compressor, but also has much less noise than a piston compressor of the same displacement.

[0049] In this compressor, due to reasonable arrangements of sound absorption and noise reduction and intake and exhaust, the vibration is well controlled and the noise is small. A low back pressure can be maintained inside the housing, which is suitable for use in household refrigerators and can improve the user experience.

[0050] Through the setting of the integrated noise-reducing exhaust cover assembly 13, when the gas is discharged from the cylinder, it experiences expansion and contraction in multiple expansion chambers formed inside the exhaust cover assembly 13, achieving the purpose of multi-stage gas silencing and thus reducing the exhaust noise.

[0051] Through the setting of the direct-insertion suction silencing chamber 12, the assembly steps can be simplified, and it is firmly fixed and easy to install; it can also prevent oil drainage increase.

[0052] Further, the cylinder assembly includes a cylinder block 5, an upper cylinder head 7, and a lower cylinder head 6 that are connected to each other. The cylinder block 5, the upper cylinder head 7, and the lower cylinder head 6 enclose to form the inner cavity. A horizontal intake passage 10 is provided on the cylinder block 5. An insertion port 11 communicating with the intake passage 10 is provided on the cylinder block 5. The outlet pipe of the intake silencing chamber 12 is directly inserted into the insertion port 11 and is fixedly connected to the upper cylinder head 7 by screwing.

[0053] Further, as Figure 5 shown, a through groove 19 is vertically penetrated on the cylinder block 5 on one side of the intake passage 10. The horizontal cross-section of the through groove 19 is gourd-shaped. A swing slide vane 20 is provided in the through groove 19 close to the inner cavity side. The swing rotor 8 is arranged in the inner cavity. One end of the slide vane 9 is fixedly connected to the swing rotor 8, and the other end passes through the swing slide vane 20 and extends into the through groove 19.

[0054] Further, the upper cylinder head 7 and the lower cylinder head 6 are respectively screwed to the upper and lower sides of the cylinder block 5. The upper and lower end faces of the swing rotor 8 and the slide vane 9 are in oil-sealed contact with the upper cylinder head 7 and the lower cylinder head 6 respectively. The length of the slide vane 9 is adapted to the horizontal length of the through groove 19.

[0055] Further, as Figure 6 shown, an engaging groove 801 is axially provided on the outer circumference of the swing rotor 8. The radial cross-section of the engaging groove 801 is I-shaped. Grooves 901 are symmetrically provided on both sides of the end of the slide vane 9. The grooves 901 are adapted to the engaging groove 801, and the end of the slide vane 9 is engaged in the engaging groove 801.

[0056] With the arrangement of the swing rotor 8 and the slide vane 9, there is a close surface contact between the two, and the leakage amount is small. The friction between the rotor and the slide vane is very small or even non-existent. It can greatly reduce mechanical wear. Through the left-right symmetric double compression chambers, the compression loss of the refrigerant can be effectively reduced in a smooth and continuous compression manner, thereby obtaining higher energy efficiency.

[0057] Through the oil-sealing method, it can ensure that a sealing end surface is formed between the swing rotor 8 and the slide vane 9 and the upper cylinder head 7 and the lower cylinder head 6, reduce the mutual leakage between the high-pressure and low-pressure areas, and improve the compression effect.

[0058] With this structure of connection, it is not only convenient for the independent processing and forming of the swing rotor 8 and the slide vane 9, and the assembly is also simple, but also can ensure the strength and stability of the connection. Under the restriction of the upper cylinder head 7 and the lower cylinder head 6, the slide vane 9 and the swing rotor 8 will not move and shake relatively. The slide vane 9 will rotate around the swing slide vane 20 and move along the through groove 19, so as to cooperate with the swing rotor 8 to perform eccentric movement in the inner cavity and realize compression.

[0059] Further, in combination with Figure 3 and Figure 4 as shown, the elastic support member 2 includes four inner support pins 201 provided on the inner bottom plate of the housing 1. A compression spring support block 202 is sleeved on the inner support pin 201. A compression spring 203 is provided on the compression spring support block 202. The other end of the compression spring 203 is also connected to the cylinder assembly through the compression spring support block 202.

[0060] By using elastic support members such as the compression spring support block 202 and the compression spring 203, the rigid contact between the pump body and the housing 1 can be isolated, rigid collision can be reduced, and the effects of shock absorption, buffering and noise reduction are better.

[0061] Embodiment 2:

[0062] This embodiment provides a specific structure of the suction silencing cavity in Embodiment 1.

[0063] As Figure 7 and Figure 8 shown, the suction silencing cavity 12 is divided into an upper silencing cavity 1202 and a lower silencing cavity 1201 by a transverse partition 21. A communication hole 2101 is provided on the transverse partition 21. One side of the lower silencing cavity 1201 away from the upper silencing cavity 1202 is provided with a suction air outlet pipe 1204. The suction air outlet pipe 1204 is arranged close to the outer edge of the lower silencing cavity 1201. Convex mounting portions 1206 are respectively provided on both sides of the suction air outlet pipe 1204. A plurality of mounting holes 1207 are provided on the mounting portions 1206. The end of the suction air outlet pipe 1204 is provided with a direct insertion type suction air outlet 1205. A suction pipe 1203 is connected to the side of the upper silencing cavity 1202. The pipe orifice of the suction pipe 1203 is arranged close to the housing suction pipe 16 (see Figure 1 ).

[0064] By providing the direct insertion type suction air outlet pipe 1204, the suction air outlet 1205 can be directly inserted into the air inlet passage 10 of the cylinder block 5, and the entire suction silencing cavity 12 can be fixed on the side of the upper cylinder head 7 of the compressor through the mounting portions 1206 and the mounting holes 1207. The convex mounting portions 1206 are convenient for close cooperation with the upper cylinder head 7, and the mounting holes 1207 can be directly screwed and fixed to the upper cylinder head 7 using screws. The mounting portions 1206 are arranged at the edge of the suction silencing cavity 12, which is also convenient for contact connection with the cylinder block 5 and the upper cylinder head 7.

[0065] Further, the air inlet / outlet 1205 is cylindrical, and the air inlet / outlet 1205 is coaxially arranged with the air inlet / outlet pipe 1204 and perpendicular to the end face of the lower sound absorption cavity 1201; a vertical partition 22 perpendicular to the transverse partition 21 is further provided in the upper sound absorption cavity 1202. The vertical partition 22 divides the upper sound absorption cavity 1202 into a connected first sound absorption cavity chamber 1202a and a second sound absorption cavity chamber 1202b, and the first sound absorption cavity chamber 1202a is connected with the air suction pipe 1203.

[0066] During operation, the gas in the compressor housing is sucked from the air suction pipe 1203 into the upper sound absorption cavity 1202. The gas expands and buffers in multiple chambers of the upper sound absorption cavity 1202, and the airflow noise is reduced. The gas after noise reduction enters the lower sound absorption cavity 1201 through the communication hole 2101. Under the further sound absorption and noise reduction effect of the lower sound absorption cavity 1201, the gas enters the cylinder block 5 from the air inlet / outlet pipe 1204 and the air inlet / outlet 1205. The gas noise entering the cylinder block 5 is significantly controlled, and there is no obvious low-frequency noise. This structure can eliminate the suction pulsation, has an obvious effect on the low-frequency noise below 1000 Kz, and has a good sound absorption and noise reduction effect. The cylindrical air inlet / outlet 1205 can also prevent the refrigerant oil from directly entering the cylinder block from the air suction sound absorption cavity and prevent the increase of oil drainage.

[0067] Further, the first sound absorption cavity chamber 1202a and the second sound absorption cavity chamber 1202b are connected through a bent pipe 23. The bent pipe 23 is arranged on the vertical partition 22; the suction end of the bent pipe 23 is located in the first sound absorption cavity chamber 1202a, and the end of the bent pipe 23 is connected to the communication hole 2101; an air inlet / outlet hole 24 is provided in the part of the bent pipe 23 located in the second sound absorption cavity chamber 1202b.

[0068] Further, an installation frame 2102 is provided on one side of the transverse partition 21 located in the lower sound absorption cavity 1201. The installation frame 2102 surrounds the communication hole 2101; a filter mesh 2103 is installed in the installation frame 2102 by means of clamping, gluing or welding, and the filter mesh 2103 faces the communication hole 2101.

[0069] The setting of the filter mesh 2103 can filter out the particulate impurities in the inhaled gas, avoid the impurities from being inhaled into the cylinder block 5 of the compressor, can protect the cylinder assembly, and improve the service life of the compressor.

[0070] Embodiment III:

[0071] This embodiment provides a specific structure of the exhaust cover assembly in Embodiment I.

[0072] AsFigure 9 and Figure 10 As shown in Figure 10 , the exhaust cover assembly 13 includes a cylinder connection cover 1301 and an exhaust silencing cover 1302 connected as a whole; the interior of the exhaust silencing cover 1302 is separated into two exhaust chambers by a partition plate 1305, and an insertion tube 1306 is provided on the partition plate 1305 to communicate with adjacent exhaust chambers; the exhaust connection tube 1304 is connected to one side of the exhaust chamber, and the other side of the exhaust chamber is connected to the cylinder connection cover 1301 through a connection tube 1303. The inner exhaust coil 14 is inserted into and connected to the exhaust connection tube 1304.

[0073] Further, as Figure 11 shown in Figure 11 , the cylinder connection cover 1301 has an inner cavity 1309, and the connection tube 1303 is connected to and inserted into the inner cavity 1309; as Figure 12 shown in Figure 12 , the cylinder connection cover 1301 and the exhaust silencing cover 1302 are respectively screwed and fixed on the upper cylinder head 7, and the inner cavity 1309 of the cylinder connection cover 1301 communicates with the exhaust passage.

[0074] The setting of these cavities enables the discharged gas to be diffused and buffered in each cavity, reducing the air flow speed and impact force. After the air flow is alleviated, it is discharged, and the exhaust noise is significantly reduced. Moreover, the cylinder connection cover 1301 can not only play a role in connection and fixation to limit the movement of the exhaust limit plate, but also eliminate a part of the exhaust noise.

[0075] Further, the exhaust silencing cover 1302 is of a sector disk structure, including a cover body and a cover plate connected to each other. Card slots are respectively provided on the inner sides of the cover body and the cover plate, and the card slots are arranged correspondingly. The partition plate 1305 is snap-fitted and fixed in the card slots; a convex structure 1307 is provided on the outer contour of the cover body corresponding to the card slots.

[0076] The cover body and the cover plate can be made by stamping. The setting of the card slots facilitates the positioning and installation of the partition plate 1305; the convex structure 1307 can increase the depth of the card slots on the cover body, which is more beneficial to the installation of the partition plate.

[0077] Further, a flange edge 1308 is provided at the opening of the cover body, and the edge of the cover plate is adapted to and screwed and fixed to the flange edge 1308. Two additional screw holes are provided on the flange edge 1308 and the edge of the cover plate, which facilitates the installation of the entire exhaust silencing cover 1302 on the upper cylinder head 7. The cylinder connection cover 1301 is rectangular, and semi-circular connection lugs 1310 are provided on both sides for installing the cylinder connection cover 1301 on the upper cylinder head 7.

[0078] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A swinging rotor compressor with a low-pressure chamber inside the housing, comprising a housing, a pump body is installed inside the housing, the pump body includes a cylinder assembly, a crankshaft is sleeved on the cylinder assembly, and a motor is sleeved above the crankshaft; It is characterized in that the pump body further includes a swinging rotor arranged inside the cylinder assembly, the swinging rotor is sleeved with the crankshaft; the swinging rotor is connected with the cylinder assembly through a sliding vane, and the swinging rotor and the sliding vane divide the inner cavity of the cylinder assembly into a first compression chamber and a second compression chamber; the first compression chamber is connected with a suction silencing chamber through an intake passage, one end of the suction silencing chamber is connected to the cylinder assembly by direct insertion, and the other end is communicated with the low-pressure chamber inside the housing; the second compression chamber is connected to an integrated exhaust cover assembly through an exhaust passage, the exhaust cover assembly is connected with a housing exhaust pipe through an internal exhaust coil to form an overall exhaust passage, and the pump body is connected with the housing through an elastic support; the cylinder assembly includes a cylinder block, an upper cylinder head and a lower cylinder head which are connected to each other, and the cylinder block, the upper cylinder head and the lower cylinder head surround to form the inner cavity; a through groove is vertically penetrated on the cylinder block on one side of the intake passage, the horizontal section of the through groove is gourd-shaped, and a swinging sliding vane is arranged in the through groove close to the inner cavity; the swinging rotor is arranged in the inner cavity, one end of the sliding vane is fixedly connected with the swinging rotor, and the other end passes through the swinging sliding vane and extends into the through groove; a clamping groove is axially arranged on the outer circumference of the swinging rotor, and the radial section of the clamping groove is I-shaped; grooves are symmetrically arranged on both sides of the end of the sliding vane, the grooves are adapted to the clamping groove, and the end of the sliding vane is clamped in the clamping groove; the exhaust cover assembly includes a cylinder connection cover and an exhaust silencing cover connected as a whole, the cylinder connection cover and the exhaust silencing cover are respectively screwed and fixed on the upper cylinder head; a plurality of exhaust cavities are separated inside the exhaust silencing cover through a partition plate, and an insertion pipe is arranged on the partition plate to communicate adjacent exhaust cavities; one side of the exhaust cavity is connected with the internal exhaust coil, and the other side of the exhaust cavity is connected with the cylinder connection cover through a connecting pipe; the exhaust silencing cover is a sector disk structure, including a cover body and a cover plate connected to each other, clamping grooves are respectively arranged on the inner sides of the cover body and the cover plate, the clamping grooves are arranged corresponding to each other, and the partition plate is clamped and fixed in the clamping grooves; a convex structure is arranged on the outer contour of the cover body corresponding to the clamping groove; the cylinder connection cover is rectangular, and semicircular connecting lugs are arranged on both sides for installing the cylinder connection cover on the upper cylinder head.

2. The swinging rotor compressor with a low-pressure chamber inside the housing according to claim 1, It is characterized in that a horizontal intake passage is arranged on the cylinder block, an insertion port communicating with the intake passage is arranged on the cylinder block, and the outlet pipe of the suction silencing chamber is directly inserted into the insertion port and is screwed and fixed with the upper cylinder head.

3. The swinging rotor compressor with a low-pressure chamber inside the housing according to claim 1 or 2, It is characterized in that The suction silencing chamber is divided into an upper silencing chamber and a lower silencing chamber by a transverse partition plate, and a communication hole is provided on the transverse partition plate; on one side of the lower silencing chamber away from the upper silencing chamber, a suction air outlet pipe is provided, the suction air outlet pipe is arranged close to the outer edge of the lower silencing chamber, convex mounting parts are respectively arranged on both sides of the suction air outlet pipe, a plurality of mounting holes are provided on the mounting parts, and a straight plug-type suction air outlet is provided at the end of the suction air outlet pipe; a suction pipe is connected to the side of the upper silencing chamber, and the pipe orifice of the suction pipe is arranged close to the housing suction pipe on the housing.

4. The swinging rotor compressor with a low-pressure chamber inside the housing according to claim 3, characterized in that the suction air outlet is cylindrical, the suction air outlet is arranged coaxially with the suction air outlet pipe and is perpendicular to the end face of the lower silencing chamber; a plurality of vertical partition plates perpendicular to the transverse partition plate are further arranged in the upper silencing chamber, the vertical partition plates divide the upper silencing chamber into a plurality of communicating silencing chambers, and at least one of the silencing chambers is connected with the suction pipe.

5. The swinging rotor compressor with a low-pressure chamber inside the housing according to claim 1, characterized in that the cylinder connection cover has an inner cavity, and the connecting pipe is connected and inserted into the inner cavity; the cylinder connection cover and the exhaust silencing cover are respectively screwed and fixed on the cylinder assembly, and the inner cavity of the cylinder connection cover is communicated with the exhaust passage.

6. The swinging rotor compressor with a low-pressure chamber inside the housing according to claim 1, characterized in that the elastic support member includes an inner support pin arranged on the inner bottom plate or side wall of the housing, a spring support block is sleeved on the inner support pin, a compression spring is arranged on the spring support block, and the other end of the compression spring is connected with the cylinder assembly through another spring support block.

7. The swinging rotor compressor with a low-pressure chamber inside the housing according to claim 1, characterized in that a housing suction pipe is arranged on the housing on the same side as the housing exhaust pipe, and a process pipe is arranged on the other side; the inner exhaust coiled pipe is serpentinely bent and distributed inside the housing.

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