Rotary compressor cylinder and rotary compressor

Abstract

The rotary compressor air cylinder comprises a cylinder body, a silencing cavity and an exhaust channel which penetrate through the cylinder body are arranged on the cylinder body, and a first leading-in channel and a first air suction chute which are connected with each other are arranged on the first end face of the cylinder body. The first end face of the cylinder body is provided with a first leading-in channel and a first air suction chute which are connected with each other, the second end face of the cylinder body is provided with a second leading-in channel and a second air suction chute which are connected with each other, the first leading-in channel is connected with the second leading-in channel through a silencing cavity, a detachable pin is arranged in the silencing cavity, and a detachable hollow pipe is arranged in the exhaust channel. The silencing cavity and the exhaust channel are adopted to reduce noise generated by gas flowing, meanwhile, the pin and the hollow pipe are used, design parameters of the air cylinder are changed by replacing the pin and the hollow pipe under the condition that the cylinder body is not changed, the air cylinder of the same model can be matched with compressors of different models, the universality of the air cylinder is improved, and the cost is reduced. And the production cost and the maintenance difficulty are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor noise reduction, and particularly relates to a rotary compressor cylinder and a rotary compressor. Background Art

[0002] Rotary compressors, as an important branch in the field of compressors, are widely used in many fields such as refrigeration, air conditioning, and air compression due to their advantages of high efficiency, reliability, small size, and light weight. The working principle of a rotary compressor is to use an eccentric crankshaft to drive a piston to rotate in a cylinder, and divide the cylinder into a high-pressure chamber and a low-pressure chamber through a sliding vane, thereby realizing air intake and exhaust.

[0003] During the working process of a rotary compressor, the gas flow inside the cylinder is one of the main sources of noise. After the gas is compressed in the cylinder and discharged through the exhaust hole, due to the high pressure and fast flow rate, a relatively large noise will be generated.

[0004] In order to effectively reduce the noise generated by gas flow, the prior art generally adopts the method of directly opening an exhaust passage and a sound-absorbing groove on the cylinder. The design of the exhaust passage aims to optimize the gas flow path, reduce the sudden change of air flow and vortex phenomenon, thereby reducing the generation of noise, while the sound-absorbing groove absorbs and dissipates the noise through its internal structure, further reducing the propagation of noise.

[0005] Since the noise spectra of compressors with different refrigerants, different displacements, and different power supplies are different, the exhaust passages and sound-absorbing grooves on their cylinders also need to be customized according to the operating parameters of each compressor. This makes a cylinder of one model only meet the requirements of a rotary compressor of one model. Although this design ensures the working efficiency and noise reduction effect of the compressor, it limits the universality of the cylinder, increases the production cost and maintenance difficulty. Summary of the Invention

[0006] The purpose of the utility model is to provide a rotary compressor cylinder and a rotary compressor for the problems existing in the prior art.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is:

[0008] In the first aspect, the utility model provides a rotary compressor cylinder, including a cylinder block. The cylinder block is provided with a sound-absorbing cavity and an exhaust passage penetrating through the cylinder block. The first end face of the cylinder block is provided with a first inlet passage and a first suction inclined groove connected to each other. The second end face of the cylinder block is provided with a second inlet passage and a second suction inclined groove connected to each other. The first inlet passage and the second inlet passage are connected through the sound-absorbing cavity. A detachable pin is arranged in the sound-absorbing cavity, and a detachable hollow tube is arranged in the exhaust passage.

[0009] The utility model adopts the sound absorption cavity and the exhaust passage to reduce the noise generated by gas flow. At the same time, pins and the hollow tube are used. Without changing the cylinder block, the design parameters of the cylinder can be changed by replacing the pins and the hollow tube, enabling cylinders of the same model to adapt to different models of compressors, improving the versatility of the cylinders, and reducing the production cost and maintenance difficulty.

[0010] Preferably, the pin is located in the middle of the sound absorption cavity, and the pin divides the sound absorption cavity into a first resonance cavity and a second resonance cavity.

[0011] The pin in the sound absorption cavity divides the sound absorption cavity into two independent resonance cavities. By using pins of different specifications, the size and volume of the resonance cavities can be changed.

[0012] Preferably, the first resonance cavity is connected to the first suction inclined groove through the first introduction passage.

[0013] Preferably, the second resonance cavity is connected to the second suction inclined groove through the second introduction passage.

[0014] When the cylinder compresses gas, the high-pressure gas enters the first suction inclined groove and the second suction inclined groove. The gas entering the first suction inclined groove enters the first resonance cavity through the first introduction passage, and the gas entering the second suction inclined groove enters the second resonance cavity through the second introduction passage.

[0015] The gas entering the first resonance cavity and the second resonance cavity is consumed by converting a part of the sound energy into heat energy through the friction and damping effects of the inner walls of the first resonance cavity and the second resonance cavity, playing a role in reducing noise.

[0016] Preferably, the hollow tube is located in the middle of the exhaust passage, and the hollow tube divides the exhaust passage into a first exhaust cavity and a second exhaust cavity.

[0017] Using hollow tubes of different specifications in the exhaust passage changes the size and volume of the exhaust passage.

[0018] Preferably, the hollow tube includes a tube wall and an air flow passage. The tube wall is arranged around the air flow passage, and the first exhaust cavity is communicated with the second exhaust cavity through the air flow passage.

[0019] Preferably, the diameter of the air flow passage is smaller than the diameter of the first exhaust cavity, and the diameter of the air flow passage is also smaller than the diameter of the second exhaust cavity.

[0020] Since the performance parameters of different compressors are different, the design parameters of the exhaust passage are changed through the hollow tube to meet the requirements of different compressors.

[0021] In a second aspect, the utility model provides a rotary compressor, comprising the rotary compressor cylinder described in any one of the first aspects.

[0022] Compared with the prior art, the beneficial effects of the utility model are:

[0023] The utility model adopts a silencer chamber and an exhaust channel to reduce the noise generated by gas flow. The pins in the silencer chamber divide the silencer chamber into two independent resonance chambers. By using pins of different specifications, the size and volume of the resonance chamber can be changed. By using hollow tubes of different specifications in the exhaust channel, the size and volume of the exhaust channel are changed. Therefore, without changing the cylinder body, the refrigeration performance and noise level of the compressor using the cylinder are changed, so that the same model of cylinder can be adapted to compressors of different models, thereby improving the versatility of the cylinder and reducing production costs and maintenance difficulties. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional diagram of a cylinder in an embodiment of the utility model;

[0025] Figure 2 A top view of a cylinder body in an embodiment of the utility model;

[0026] Figure 3 A bottom view of the cylinder body in the embodiment of the utility model;

[0027] Figure 4 This is a structural cross-sectional view of the muffler chamber in the embodiment of the utility model;

[0028] Figure 5 This is a structural cross-sectional view of the exhaust passage in the embodiment of the utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the pin in the embodiment of the utility model;

[0030] Figure 7 This is a schematic diagram of the structure of the hollow tube in the embodiment of the utility model;

[0031] In the figure: 1, cylinder body; 101, first end face; 102, second end face; 2, cylinder chamber; 3, vane groove; 4, bolt hole; 5, silencer chamber; 6, exhaust passage; 7, air inlet; 8, first air intake chute; 9, first inlet passage; 10, second air intake chute; 11, second inlet passage; 12, pin; 13, hollow tube. DETAILED DESCRIPTION

[0032] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present utility model.

[0033] In the description of the present utility model, 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 utility model 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 a limitation to the present utility model.

[0034] As Figures 1 - 7 shown, the specific solution of the embodiment is as follows: As the first aspect of the embodiments of the present disclosure, the embodiments of the present application provide a rotary compressor cylinder, including a cylinder block 1, the cylinder block 1 is arranged around a cylinder cavity 2, and the cylinder cavity 2 is used to accommodate a compressor piston.

[0035] Taking any end face of the cylinder block 1 as a horizontal plane, the cylinder block 1 is provided with a sliding vane groove 3, a bolt hole 4, a silencing cavity 5, and an exhaust passage 6. The sliding vane groove 3, the bolt hole 4, the silencing cavity 5, and the exhaust passage 6 all penetrate through the cylinder block 1, and their respective penetration directions are perpendicular to any end face of the cylinder block 1.

[0036] An air inlet hole 7 is provided on the side wall of the cylinder block 1, the air inlet hole 7 penetrates through the side wall of the cylinder block 1, and the penetration direction of the air inlet hole 7 is parallel to any end face of the cylinder block 1.

[0037] The air inlet hole 7 and the silencing cavity 5 are respectively arranged on both sides of the sliding vane groove 3. The sliding vane groove 3 is used to accommodate a sliding vane. The sliding vane and the piston divide the cylinder into a high-pressure chamber and a low-pressure chamber. During the process that the crankshaft drives the piston to rotate one week, air is inhaled from the low-pressure chamber and exhausted from the high-pressure chamber, thereby realizing the compression of the gas. The air inlet hole 7 is used for inhaling air into the low-pressure chamber.

[0038] The cylinder block 1 includes a first end face 101 and a second end face 102 that are symmetric to each other. The first end face 101 of the cylinder block 1 is provided with a first inlet passage 9 and a first suction inclined groove 8 that are connected to each other. The second end face 102 of the cylinder block 1 is provided with a second inlet passage 11 and a second suction inclined groove 10 that are connected to each other.

[0039] The first inlet channel 9 and the second inlet channel 11 are symmetrical to each other. The first inlet channel 9 and the second inlet channel 11 are connected by a sound deadening cavity 5. The first suction chute 8 and the second suction chute 10 are also symmetrical to each other. The first suction chute 8 and the second suction chute 10 are both arranged at the edge of the cylinder cavity 2, and the first suction chute 8 and the second suction chute 10 are both arc-shaped chutes.

[0040] A pin 12 is arranged in the sound deadening cavity 5. The pin 12 is detachably fixed in the middle of the sound deadening cavity 5. The pin 12 divides the sound deadening cavity 5 into a first resonance cavity and a second resonance cavity.

[0041] The first resonance cavity is connected through the first inlet channel 9 and the first suction chute 8, and the second resonance cavity is connected through the second inlet channel 11 and the second suction chute 10. When the cylinder compresses the gas, the high-pressure gas enters the first suction chute 8 and the second suction chute 10. The gas entering the first suction chute 8 enters the first resonance cavity through the first inlet channel 9, and the gas entering the second suction chute 10 enters the second resonance cavity through the second inlet channel 11.

[0042] The first resonance cavity, the first inlet channel 9 and the first suction chute 8 together form a resonance sound deadening structure, and the second resonance cavity, the second inlet channel 11 and the second suction chute 10 together form another resonance sound deadening structure.

[0043] The gas entering the first resonance cavity and the second resonance cavity is consumed by converting a part of the sound energy into heat energy through the friction and damping effects of the inner walls of the first resonance cavity and the second resonance cavity, playing a role in reducing noise.

[0044] Since the resonance sound deadening structure will affect the refrigeration performance of the compressor, if the loss of refrigerating capacity caused by the resonance sound deadening structure is reduced in order to improve the refrigeration performance of the compressor, the sound deadening effect of the resonance sound deadening structure will become worse. Therefore, it is necessary to adjust the size parameters of the resonance sound deadening structure according to the actual needs of different models of compressors.

[0045] In this embodiment, different models of compressors can use the same cylinder block 1, and then different lengths of pins 12 are selected for different models of compressors to change the depths of the first resonance cavity and the second resonance cavity, so as to change the size parameters of the resonance sound deadening structure and realize the universality of the compressor cylinder block 1.

[0046] A hollow tube 13 is arranged in the exhaust passage 6. The hollow tube 13 is detachably fixed in the middle of the exhaust passage 6. The hollow tube 13 divides the exhaust passage 6 into a first exhaust cavity and a second exhaust cavity.

[0047] The hollow tube 13 includes a tube wall and an air flow passage. The tube wall is arranged around the air flow passage. The first exhaust cavity is communicated with the second exhaust cavity through the air flow passage.

[0048] The diameter of the air flow channel is smaller than the diameter of the first exhaust cavity and also smaller than the diameter of the second exhaust cavity.

[0049] The design of the exhaust passage 6 aims to optimize the gas flow path in the compressor to reduce the noise generated by the rapid gas flow. The damping effect of the exhaust passage 6 on the gas is increased through the hollow tube 13, enabling the gas to have a smoother transition during the discharge process and reducing the noise generated by shocks and vibrations.

[0050] In this embodiment, the same cylinder block 1 can be used for different models of compressors. Then, according to the actual requirements of different models of compressors, hollow tubes 13 with different lengths and different inner diameters are selected to change the diameter and length of the air flow channel, thereby changing the size parameters of the exhaust passage 6 and achieving the universality of the compressor cylinder block 1.

[0051] As the second aspect of the embodiments of the present disclosure, the embodiments of the present application provide a rotary compressor, including the rotary compressor cylinder of any one of the embodiments in the first aspect. This rotary compressor can select a hollow tube 13 and a pin 12 with appropriate specifications during assembly according to its own design requirements, so as to share the same rotary compressor cylinder with multiple different models of rotary compressors.

[0052] Although the 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. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary compressor cylinder, comprising a cylinder body, characterized in that: The cylinder body is provided with a silencer chamber and an exhaust channel which penetrate the cylinder body, the first end surface of the cylinder body is provided with a first introduction channel and a first air intake chute which are connected to each other, the second end surface of the cylinder body is provided with a second introduction channel and a second air intake chute which are connected to each other, the first introduction channel and the second introduction channel are connected through the silencer chamber, a detachable pin is provided in the silencer chamber, and a detachable hollow tube is provided in the exhaust channel.

2. A rotary compressor cylinder according to claim 1, characterized in that: The pin is located in the middle of the muffler cavity, and the pin divides the muffler cavity into a first resonance cavity and a second resonance cavity.

3. A rotary compressor cylinder according to claim 2, characterized in that: The first resonance cavity is connected to the first air suction chute through the first introduction channel.

4. A rotary compressor cylinder according to claim 2, characterized in that: The second resonance cavity is connected to the second air suction chute through the second introduction channel.

5. A rotary compressor cylinder according to claim 1, characterized in that: The hollow tube is located in the middle of the exhaust passage, and the hollow tube divides the exhaust passage into a first exhaust chamber and a second exhaust chamber.

6. A rotary compressor cylinder according to claim 5, characterized in that: The hollow tube includes a tube wall and an air flow channel, the tube wall is arranged around the air flow channel, and the first exhaust cavity is connected with the second exhaust cavity through the air flow channel.

7. A rotary compressor cylinder according to claim 6, characterized in that: The diameter of the airflow channel is smaller than the diameter of the first exhaust cavity, and the diameter of the airflow channel is also smaller than the diameter of the second exhaust cavity.

8. A rotary compressor, characterized in that: Comprising a rotary compressor cylinder as claimed in any one of claims 1-7.

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