Cylinder structure, compressor pump body and compressor

Abstract

The utility model belongs to the technical field of compressors, and discloses an air cylinder structure, a compressor pump body and a compressor. A cylinder cavity is formed in the center of the cylinder body; an air suction opening is formed in the air cylinder wall of the air cylinder body and penetrates through the air cylinder wall of the air cylinder body in the radial direction. The air cylinder body is further provided with a flow expanding hole, and the central projection of the flow expanding hole is located on the central axis of the air suction port. One end of the flow expanding hole is communicated with the air suction port, and the other end of the flow expanding hole is communicated with the axial end face of the air cylinder body. The flow expanding hole is communicated with the air suction port, flow expanding is achieved when air flows through the flow expanding hole by expanding the airflow channel, the effect of effectively reducing airflow resistance and flow velocity is achieved, the purpose of noise reduction is achieved, and the stability and reliability of the air cylinder are improved.

Description

Technical Field

[0001] This utility model belongs to the field of compressor technology, and specifically relates to a cylinder structure, a compressor pump body, and a compressor. Background Technology

[0002] In a rotary compressor, gas enters the cylinder through the intake port. As the piston or rotor inside the cylinder rotates, the gas is compressed and pushed towards the exhaust port. The size of the intake port directly affects the compressor's intake capacity and efficiency. If the intake port is too small, it will limit the gas flow and reduce the compressor's efficiency. If the intake port is too large, it will increase airflow resistance and noise. For example, existing rotary compressors generally use straight or tapered intake port structures, which result in greater airflow resistance and noise during operation, thus significantly increasing operating noise. Utility Model Content

[0003] In view of the technical problems existing in the prior art, this utility model provides a cylinder structure, a compressor pump body and a compressor, to solve the technical problem that the air intake structure with straight hole or conical hole commonly used in existing rotary compressors has large airflow resistance and airflow noise during operation, which greatly increases the operating noise of the compressor.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This utility model provides a cylinder structure, including a cylinder body;

[0006] A cylinder chamber is provided at the center of the cylinder body; an air intake port is provided on the cylinder wall of the cylinder body, and the air intake port penetrates the cylinder wall of the cylinder body radially.

[0007] The cylinder body is also provided with a flow-expanding hole, the center projection of which is located on the central axis of the intake port; one end of the flow-expanding hole is connected to the intake port, and the other end of the flow-expanding hole is connected to the axial end face of the cylinder body.

[0008] Furthermore, the flow-expanding hole is a circular hole, and the diameter D2 of the flow-expanding hole is smaller than the diameter D1 of the air intake.

[0009] Furthermore, there is one diffuser hole, which is located near the main bearing of the compressor; specifically, one end of the diffuser hole is connected to the intake port, and the other end of the diffuser hole is connected to the upper end face of the cylinder body.

[0010] Furthermore, there is one diffuser hole, which is located near the auxiliary bearing of the compressor; specifically, one end of the diffuser hole is connected to the intake port, and the other end of the diffuser hole is connected to the lower end face of the cylinder body.

[0011] Furthermore, there are two diffusing holes, which are symmetrically arranged on both sides of the intake port; wherein, one end of the first diffusing hole is connected to the first side wall of the intake port, and the other end of the first diffusing hole is connected to the upper end face of the cylinder body; one end of the second diffusing hole is connected to the second side wall of the intake port, and the other end of the second diffusing hole is connected to the lower end face of the cylinder body.

[0012] Furthermore, the intake port includes an axially extending equal-diameter section and a gradually expanding section; one end of the equal-diameter section is connected to the outer surface of the cylinder wall of the cylinder body, the other end of the equal-diameter section is connected to the small end of the gradually expanding section, and the large end of the gradually expanding section is connected to the wall of the cylinder cavity.

[0013] Furthermore, the flow-expanding orifice is located at the connection between the constant diameter orifice section and the gradually expanding orifice section.

[0014] This utility model also provides a compressor pump body, which includes the cylinder structure described above.

[0015] This utility model also provides a compressor, which includes the cylinder structure described above, or includes the compressor pump body described above.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This utility model provides a cylinder structure that incorporates a flow-expanding hole on the cylinder body, connecting it to the intake port. By expanding the airflow channel, the gas is amplified as it flows through the flow-expanding hole, effectively reducing airflow resistance and velocity, thereby achieving noise reduction and improving the stability and reliability of the cylinder. Furthermore, positioning the center projection of the flow-expanding hole on the central axis of the intake port ensures the straightness of the airflow path, reducing friction and collisions on the cylinder wall, thus minimizing energy loss and improving cylinder efficiency. Attached Figure Description

[0018] Figure 1 A schematic diagram of the overall structure of the cylinder provided in Example 1;

[0019] Figure 2 for Figure 1 Cross-sectional view at point AA;

[0020] Figure 3 This is a partial cross-sectional view of the cylinder structure provided in Embodiment 2;

[0021] Figure 4 This is a partial cross-sectional view of the cylinder structure provided in Example 3.

[0022] The components include: 1. Cylinder body; 11. Cylinder chamber; 12. Intake port; 13. Flow diffuser hole; 14. Sliding vane groove. Detailed Implementation

[0023] To make the technical problem solved by this utility model, the technical solution, and the beneficial effects clearer, the following specific embodiments provide a further detailed description of this utility model. It should be understood that the specific embodiments described herein are only for explaining this utility model and are not intended to limit this utility model.

[0024] Example 1

[0025] As attached Figure 1-2 As shown, this embodiment 1 provides a cylinder structure, including a cylinder body 1; a cylinder cavity 11 is provided at the center of the cylinder body 1, the cylinder cavity 11 is used as the main area for gas compression and storage; an intake port 12 is provided on the cylinder wall of the cylinder body 1, the intake port 12 is used as a channel for gas to enter the cylinder cavity 11; wherein, the intake port 12 radially penetrates the cylinder wall of the cylinder body 1; specifically, the center of the intake port 12 coincides with the diameter direction of the cylinder body 1, one end of the intake port 12 communicates with the outer surface of the cylinder wall of the cylinder body 1, and the other end of the intake port 12 communicates with the wall surface of the cylinder cavity 11.

[0026] The cylinder body 1 is also provided with a diffusing hole 13, the center projection of which is located on the central axis of the intake port 12; there are two diffusing holes 13, which are symmetrically arranged on both sides of the central axis of the intake port 12; specifically, one end of the first diffusing hole is connected to the first side wall of the intake port 12, and the other end is connected to the upper end face of the cylinder body 1; one end of the second diffusing hole is connected to the second side wall of the intake port 12, and the other end is connected to the lower end face of the cylinder body 1.

[0027] It should be noted that the upper end face of the cylinder body 1 is the end face that mates with the main bearing in the compressor, and the lower end face of the cylinder body 1 is the end face that mates with the auxiliary bearing in the compressor; the first side wall of the intake port 12 is the inner wall on the side close to the upper end face of the cylinder body 1, and the second side wall of the intake port 12 is the inner wall on the side close to the lower end face of the cylinder body 1.

[0028] In this embodiment 1, the intake port 12 includes an axially penetrating equal-diameter section and a gradually expanding section; one end of the equal-diameter section is connected to the outer surface of the cylinder wall of the cylinder body 1, the other end of the equal-diameter section is connected to the small end of the gradually expanding section, and the large end of the gradually expanding section is connected to the wall of the cylinder cavity; wherein, the flow-expanding hole 13 is located at the connection between the clarification section and the gradually expanding section.

[0029] The diffuser hole 13 is a circular hole, which is conducive to the uniform distribution of airflow and reduces airflow resistance. The diameter D2 of the diffuser hole 13 is smaller than the diameter D1 of the intake port 12, which can ensure that the intake port 12 serves as the main channel for gas to enter the cylinder cavity while realizing gas diffusion, effectively ensuring the intake efficiency of the cylinder.

[0030] It should also be noted that the cylinder body 1 is also provided with a sliding vane groove 14; a sliding vane assembly is provided in the sliding vane groove 14 to divide the cylinder cavity 11 into an intake cavity and a compression cavity; the intake port 12 and the expansion hole 13 are located on the same side of the sliding vane groove 14, which ensures the compactness and simplicity of the cylinder structure.

[0031] Working principle:

[0032] The cylinder structure provided in this embodiment 1, by setting a flow-expanding hole 13 on the cylinder body 1 and connecting the circular cross-section flow-expanding hole 13 with the intake port 12, causes a flow-expanding phenomenon when the gas flows through the flow-expanding hole 13 during the compressor intake process, based on the principle of fluid mechanics, so as to reduce the flow velocity of the gas and reduce the airflow noise, thereby greatly reducing the operating noise of the compressor and ensuring the reliability and safety of the compressor.

[0033] Example 2

[0034] The cylinder structure provided in this embodiment 2 is basically the same in structure and principle as the cylinder structure provided in embodiment 1 above, except that: the number of the expansion holes 13 is one, as shown in the attached figure. Figure 3 As shown.

[0035] When there is only one diffuser hole 13, the diffuser hole 13 is located near the main bearing of the compressor; specifically, one end of the diffuser hole 13 is connected to the intake port 12, and the other end of the diffuser hole 13 is connected to the upper end face of the cylinder body 1.

[0036] The remaining structural features and working principle of the cylinder structure are basically the same as those of the cylinder structure in Embodiment 1 above, and will not be repeated here.

[0037] Example 3

[0038] The cylinder structure provided in this embodiment 3 is basically the same in structure and principle as the cylinder structure provided in embodiment 1 above, except that: the number of the expansion holes 13 is one, as shown in the attached figure. Figure 4 As shown.

[0039] When there is only one diffuser hole 13, the diffuser hole 13 is located near the auxiliary bearing of the compressor; specifically, one end of the diffuser hole 13 is connected to the intake port 12, and the other end of the diffuser hole 13 is connected to the lower end face of the cylinder body 1.

[0040] The remaining structural features and working principle of the cylinder structure are basically the same as those of the cylinder structure in Embodiment 1 above, and will not be repeated here.

[0041] Example 4

[0042] This embodiment 4 provides a compressor pump body, including a main bearing, a secondary bearing, a rotor piston, a crankshaft, and a cylinder.

[0043] The main bearing and the auxiliary bearing are respectively disposed on both sides of the cylinder; the rotor piston is disposed inside the cylinder; the auxiliary bearing is fitted with the short shaft diameter of the crankshaft, the main bearing is fitted with the long shaft diameter of the crankshaft, and the rotor piston is fitted with the eccentric shaft diameter of the crankshaft; wherein, the cylinder adopts the cylinder structure as described in any of the above embodiments 1, 2 or 3.

[0044] It should be noted that the assembly principle and process between the main bearing, the auxiliary bearing, the rotor piston, the crankshaft, and the cylinder are similar to those of existing compressor pump bodies, and will not be repeated here. In addition, the compressor pump body described in this embodiment 4 is applicable to compressors with different operating conditions, different application fields, and different displacements. Among them, different application fields include, for example, air conditioning and refrigeration, heat pump heating, or refrigeration.

[0045] Example 5

[0046] This embodiment 5 provides a compressor, including a pump body, a motor assembly, and a housing; the pump body adopts the compressor pump body described in embodiment 4 above; the pump body and the motor assembly are both assembled in the housing, and the motor assembly is connected to the crankshaft in the pump body.

[0047] In the cylinder structure of the compressor body, when gas enters rapidly from the intake port 12, its flow velocity is relatively high, which easily generates turbulence and eddies inside the cylinder. Unstable airflow will lead to increased airflow noise, thus generating noise. The cylinder structure described in this utility model utilizes the principle of fluid mechanics by setting a flow-expanding hole 13 that penetrates the intake port. When gas flows through the flow-expanding hole 13, the gas velocity will naturally decrease due to the expansion of the channel, and the airflow will become more stable. Secondly, the reduction in gas velocity and the stabilization of airflow help to reduce friction and collision between the airflow and the cylinder wall, thereby reducing the noise generated by unstable airflow.

[0048] In this invention, the gas is amplified and decelerated before entering the cylinder chamber through the design of the expansion hole, which significantly reduces the noise level of the airflow and effectively controls the noise level of the entire compressor pump body during operation. The reduction in noise not only improves the user experience but also helps to reduce the impact of noise pollution on the surrounding environment. The overall structure of this invention is simple, which not only improves the overall performance of the compressor pump body but also makes it more environmentally friendly and user-friendly, meeting the requirements of modern industry for low noise and high efficiency equipment.

[0049] The above embodiments are merely one of the implementation methods to achieve the technical solution of this utility model. The scope of protection claimed by this utility model is not limited to this embodiment, but also includes any variations, substitutions and other implementation methods that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this utility model.

Claims

1. A cylinder structure, characterized in that, Including the cylinder body (1); The cylinder body (1) has a cylinder cavity (11) at its center; the cylinder wall of the cylinder body (1) has an air intake port (12) which radially penetrates the cylinder wall of the cylinder body (1). The cylinder body (1) is also provided with a flow-expanding hole (13), the center projection of which is located on the central axis of the intake port (12); one end of the flow-expanding hole (13) is connected to the intake port, and the other end of the flow-expanding hole (13) is connected to the axial end face of the cylinder body (1).

2. The cylinder structure according to claim 1, characterized in that, The expansion hole (13) is a circular hole, and the diameter D2 of the expansion hole (13) is smaller than the diameter D1 of the air intake (12).

3. The cylinder structure according to claim 1, characterized in that, The number of the expansion hole (13) is one, and the expansion hole (13) is set on the side close to the main bearing of the compressor; specifically, one end of the expansion hole (13) is connected to the intake port (12), and the other end of the expansion hole (13) is connected to the upper end face of the cylinder body (1).

4. A cylinder structure according to claim 1, characterized in that, The number of the expansion hole (13) is one, and the expansion hole (13) is set on the side close to the auxiliary bearing of the compressor; specifically, one end of the expansion hole (13) is connected to the intake port (12), and the other end of the expansion hole (13) is connected to the lower end face of the cylinder body (1).

5. A cylinder structure according to claim 1, characterized in that, There are two diffusing holes (13), which are symmetrically arranged on both sides of the intake port (12). One end of the first diffusing hole is connected to the first side wall of the intake port (12), and the other end of the first diffusing hole is connected to the upper end face of the cylinder body (1). One end of the second diffusing hole is connected to the second side wall of the intake port (12), and the other end of the second diffusing hole is connected to the lower end face of the cylinder body (1).

6. A cylinder structure according to claim 1, characterized in that, The intake port (12) includes an axially penetrating equal diameter section and a gradually expanding section; one end of the equal diameter section is connected to the outer surface of the cylinder wall of the cylinder body (1), the other end of the equal diameter section is connected to the small end of the gradually expanding section, and the large end of the gradually expanding section is connected to the wall of the cylinder cavity.

7. A cylinder structure according to claim 6, characterized in that, The expansion hole (13) is located at the connection between the equal diameter hole section and the gradually expanding hole section.

8. A compressor pump body, characterized in that, The compressor pump body includes the cylinder structure as described in any one of claims 1-7.

9. A compressor, characterized in that, The compressor includes a cylinder structure as described in any one of claims 1-7, or a compressor pump body as described in claim 8.

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