Compressor rear cover structure and bidirectional swash plate type compressor
By designing non-vertical/parallel intake and outlet channels in the rear cover structure of the bidirectional swash plate compressor, the problems of large compressor volume, large leakage area and high sealing difficulty in the prior art are solved, and the effects of space reduction, resistance reduction and pressure loss reduction are achieved.
Patent Information
- Application Number
- CN202422002740.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-19
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-08-19
AI Technical Summary
The rear cover structure of the existing two-way swash plate compressor leads to an increase in the overall volume of the compressor, an increase in leakage area, an increase in sealing difficulty, a large installation space, a large airflow resistance, and serious pressure loss.
A compressor rear cover structure is designed, in which the intake passage and the exhaust passage are arranged on the rear cover body, and are in communication with the intake passage and the exhaust passage in the rear cover body respectively. The angle formed by the axis line of the intake passage and the outlet line of the rear cover is between 5°-30°, reducing the resistance during the air flow delivery process.
It significantly reduces the space occupied by the compressor in the axial and radial directions, reduces the resistance during the airflow conveying process, reduces pressure loss, and improves seal stability and compression effect.
Smart Images
Figure CN222991659U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of compressors, and particularly relates to a compressor rear cover structure and a bi-directional swash plate compressor. Background Art
[0002] Generally, a compressor applicable to an air-conditioning system compresses refrigerant gas that has passed through an evaporator into a high-temperature and high-pressure state, and then discharges it to a condenser. Various types of compressors such as reciprocating, rotary, scroll, and swash plate are used.
[0003] Among these compressors, the swash plate compressor is currently widely used in vehicle air-conditioning devices. It is mainly assembled from components such as a main shaft, a swash plate, a piston, a cylinder, and a valve plate. When the main shaft rotates, the swash plate rotates accordingly, and its edge pushes the piston to move axially back and forth, thereby realizing the cyclic suction, compression, and discharge of gas. In the prior art, for a bi-directional swash plate compressor, an air inlet is generally provided on the cylinder block, and an air outlet is provided on the cover body. The separate arrangement of the air inlet and the air outlet not only increases the overall volume of the compressor but also increases the leakage area, making it more difficult to seal and repair. In order to facilitate the processing of the air outlet, the air outlet is generally arranged parallel or perpendicular to the axis of the cylinder block. However, when the air outlet is arranged parallel to the axis of the cylinder block, connecting the inlet pipe will significantly increase the installation space of the compressor, occupying a large amount of space. If the air outlet is arranged perpendicular to the axis of the cylinder block, since the air flow passes through a right angle, there will be a large resistance when the gas is input and output, resulting in a large pressure loss. Summary of the Utility Model
[0004] In view of the problems existing in the above-mentioned prior art, the main purpose of the present utility model is to provide a compressor rear cover structure and a bi-directional swash plate compressor. The provided compressor rear cover structure can significantly reduce its own occupied space in the axial and radial directions, while reducing the resistance during the air flow transportation process and reducing the pressure loss.
[0005] The purpose of the present utility model is achieved through the following technical solutions:
[0006] The present utility model provides a compressor rear cover structure, which includes:
[0007] A rear cover body, in which an air inlet cavity and an air outlet cavity are provided;
[0008] An air inlet passage, which is arranged on the rear cover body and can communicate with the air inlet cavity;
[0009] An air outlet passage, which is arranged on the rear cover body and communicates with the air outlet cavity;
[0010] The included angles formed between the axis line of the intake passage and the axis line of the compressor rear cover and between the axis line of the exhaust passage and the axis line of the compressor rear cover are both greater than 0° and less than 90°.
[0011] As a further description of the above technical solution, the included angles formed between the axis line of the intake passage and the axis line of the compressor rear cover and between the axis line of the exhaust passage and the axis line of the compressor rear cover are both 5° - 30°.
[0012] As a further description of the above technical solution, the axial side walls of the intake passage and the exhaust passage are arranged adjacent to each other.
[0013] As a further description of the above technical solution, the intake passage includes a first intake section and a second intake section. The second intake section is communicated between the first intake section and the intake cavity, and the diameter of the second intake section is smaller than that of the first intake section; or,
[0014] The diameter of the intake passage gradually increases from the end where it is communicated with the intake cavity to the other end.
[0015] As a further description of the above technical solution, the exhaust passage includes a first exhaust section and a second exhaust section. The second exhaust section is communicated between the first exhaust section and the exhaust cavity, and the diameter of the second exhaust section is smaller than that of the first exhaust section; or,
[0016] The diameter of the exhaust passage gradually increases from the end where it is communicated with the exhaust cavity to the other end.
[0017] As a further description of the above technical solution, the diameter of the second exhaust section gradually increases from the end where it is communicated with the exhaust cavity to the end where it is communicated with the first exhaust section.
[0018] As a further description of the above technical solution, the first exhaust section includes a muffler section and a connecting section, and the muffler section is connected between the connecting section and the second exhaust section.
[0019] The present utility model further provides a two-way swash plate compressor, which includes the compressor rear cover structure as described above, as well as a front cover and a cylinder block composed of a front cylinder block and a rear cylinder block;
[0020] The cylinder block is axially sealed between the front cover and the compressor rear cover structure;
[0021] The gas passage provided in the cylinder block is communicated between the intake cavity and the exhaust cavity included in the compressor rear cover structure, and the parts of the gas passage communicated with the intake cavity and the exhaust cavity both extend along the axis of the cylinder block.
[0022] With the above technical solutions, the outstanding effects of the present utility model are as follows:
[0023] 1. In the compressor rear cover structure provided by the present utility model, both the intake passage and the exhaust passage are provided on the rear cover body and are respectively communicated with the intake cavity and the exhaust cavity inside the rear cover body. The angles formed between the intake passage and the axis of the compressor rear cover and between the axis of the exhaust passage and the axis of the compressor rear cover are both greater than 0° and less than 90°, rather than being perpendicular or parallel to the axis of the compressor rear cover. Therefore, after the compressor rear cover and the cylinder block of the compressor adapted thereto are assembled, the occupied space is significantly reduced both axially and radially. The air flow passages provided in the cylinder block of the compressor extend along the axial direction of the cylinder block corresponding to the parts communicated with the intake cavity and the exhaust cavity. Therefore, it is equivalent that the connection parts between the intake cavity, the exhaust cavity and the air flow passage are not right angles, thereby reducing the resistance suffered by the air flow from the intake passage into the air flow passage provided in the compressor cylinder block and then from the air flow passage to the exhaust passage, and further reducing the pressure loss during the air flow transportation process;
[0024] 2. In the compressor rear cover structure provided by the present utility model, the intake passage includes a first intake section and a second intake section. The second intake section is communicated between the first intake section and the intake cavity, and the diameter of the second intake section is smaller than that of the first intake section; or, the diameter of the intake passage gradually increases from the end connected to the intake cavity to the other end, thereby effectively increasing the pressure value of the air flow entering the air flow passage in the compressor cylinder block through the intake passage and enhancing the subsequent compression effect. Description of the Drawings
[0025] Figure 1 It is a cross-sectional view of a bi-directional swash plate compressor in an embodiment of the present utility model;
[0026] Figure 2 It is another cross-sectional view of a bi-directional swash plate compressor in an embodiment of the present utility model
[0027] Figure 3 It is a side view of a bi-directional swash plate compressor in an embodiment of the present utility model;
[0028] Figure 4 It is a side view of the compressor rear cover structure in an embodiment of the present utility model.
[0029] Explanation of the Reference Numerals in the Drawings:
[0030] 1. Rear cover body; 2. Intake cavity; 3. Exhaust cavity; 4. Intake passage; 5. Exhaust passage; 6. First intake section; 7. Second intake section; 8. First exhaust section; 9. Second exhaust section; 10. Front cover; 11. Front cylinder block; 12. Rear cylinder block; 13. Gas passage. Detailed Embodiment
[0031] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.
[0032] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "middle", "lower", "inner", "outer", "front", "back", "left", "right", 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 component referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations. The implementation manners of the present utility model will be described below according to its overall structure.
[0033] Please refer to Figures 1 to 4 , the present utility model discloses a compressor rear cover structure and a bi-directional swash plate compressor. The disclosed compressor rear cover structure includes:
[0034] A rear cover body 1, in which an air inlet cavity 2 and an air outlet cavity 3 are provided;
[0035] An air inlet passage 4, which is provided on the rear cover body 1 and can communicate with the air inlet cavity 2;
[0036] An air outlet passage 5, which is provided on the rear cover body 1 and communicates with the air outlet cavity 3;
[0037] The included angle formed between the axis line of the air inlet passage 4 and the axis line of the compressor rear cover and the included angle formed between the axis line of the air outlet passage 5 and the axis line of the compressor rear cover are both greater than 0° and less than 90°.
[0038] In the above setting method, the intake channel 4 and the outlet channel 5 are both provided on the rear cover body 1 and can be respectively communicated with the intake cavity 2 and the outlet cavity 3 inside the rear cover body 1. The angles formed between the axis of the intake channel 4 and the axis of the compressor rear cover and between the axis of the outlet channel 5 and the axis of the compressor rear cover are both greater than 0° and less than 90°, rather than being perpendicular or parallel to the axis of the compressor rear cover. Thus, after the compressor rear cover and the cylinder block of the compressor adapted thereto are assembled, the occupied space is significantly reduced both axially and radially. The air flow channels provided in the cylinder block of the compressor extend along the axial direction of the cylinder block corresponding to the parts communicated with the intake cavity 2 and the outlet cavity 3. Therefore, it is equivalent that the joints between the intake cavity 2, the outlet cavity 3 and the air flow channels are not right angles, thereby reducing the resistance suffered by the air flow when it is input from the intake channel 4 into the air flow channel provided in the compressor cylinder block and then when it is transported from the air flow channel to the outlet channel 5, and further reducing the pressure loss during the air flow transportation process.
[0039] Please refer to Figure 1 and Figure 2 , specifically, in this embodiment, the angles formed between the axis of the intake channel 4 and the axis of the compressor rear cover and between the axis of the outlet channel 5 and the axis of the compressor rear cover are both, for example, 5° - 30°.
[0040] Please refer to Figure 3 , specifically, in this embodiment, the axial side walls of the intake channel 4 and the outlet channel 5 are adjacently arranged. Further, there is no gap between their axial outer side walls or no gap between their axial inner side walls (it should be understood that in this case, a one-way valve needs to be provided in the intake part channel 4 to prevent backflow). Compared with the method of separately arranging the intake channel 4 and the outlet channel 5, on the one hand, the volume of the compressor is effectively reduced, and on the other hand, the sealing area is effectively reduced, and the sealing difficulty is reduced, thereby further improving the operating stability of the compressor.
[0041] Please refer to Figures 1 to 4 , specifically, in this embodiment, the intake channel 4 includes a first intake section 6 and a second intake section 7. The second intake section 7 is communicated between the first intake section 6 and the intake cavity 2. The diameter of the second intake section 7 is smaller than that of the first intake section 6, so that the pressure value of the air flow entering the air flow channel in the cylinder block of the compressor through the intake channel 4 can be effectively increased, and the subsequent compression effect can be enhanced. Of course, in other embodiments, the diameter of the intake channel 4 can also be set to gradually increase from the end connected to the intake cavity 2 to the other end to increase the air flow pressure it transports.
[0042] Specifically, in this embodiment, the air outlet channel 5 includes a first air outlet section 8 and a second air outlet section 9. The second air outlet section 9 is communicated between the first air outlet section 8 and the air outlet cavity 3. The diameter of the second air outlet section 9 is smaller than that of the first air outlet section 8, so as to effectively reduce the noise during the air flow discharging process. Of course, in other embodiments, a structure in which the diameter of the air outlet channel 5 gradually increases from the end connected to the air outlet cavity 3 to the other end can also be set.
[0043] Specifically, in this embodiment, the diameter of the second air outlet section 9 gradually increases from the end connected to the air outlet cavity 3 to the end connected to the first air outlet section 8, presenting a conical tubular shape, and is still used for installing components such as mufflers.
[0044] Specifically, in this embodiment, the first air outlet section 8 includes a muffling section and a connecting section. The muffling section is connected between the connecting section and the second air outlet section 9. It is a circular tube structure. The connecting section is used to connect with an external heat exchange pipeline, so that the refrigerant air flow (or the heated heat conduction medium) is transported to the heat exchange system through the heat exchange pipeline.
[0045] Please continue to refer to Figure 1 and Figure 2 , specifically, the double-sided swash plate compressor disclosed by the present utility model includes the compressor rear cover structure as described above, as well as a front cover 10 and a cylinder block composed of a front cylinder block 11 and a rear cylinder block 12; the cylinder block is axially sealed between the front cover 10 and the compressor rear cover structure; a gas channel 13 provided in the cylinder block is communicated between the intake cavity 2 and the air outlet cavity 3 included in the compressor rear cover structure, and the parts of the gas channel 13 communicated with the intake cavity 2 and the air outlet cavity 3 both extend along the axial direction of the cylinder block.
[0046] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any changes, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A compressor rear cover structure, characterized in that: include: A rear cover body, wherein an air inlet cavity and an air outlet cavity are arranged in the rear cover body; An air intake passage, the air intake passage is provided on the rear cover body and can be communicated with the air intake cavity; An air outlet channel, the air outlet channel is provided on the rear cover body and communicates with the air outlet cavity; The angle formed by the axis line of the air inlet passage and the axis line of the compressor rear cover and the angle formed by the axis line of the air outlet passage and the axis line of the compressor rear cover are both greater than 0° and less than 90°.
2. The compressor rear cover structure according to claim 1, characterized in that: The angle formed by the axis of the air inlet passage and the axis of the compressor rear cover, and the angle formed by the axis of the air outlet passage and the axis of the compressor rear cover are both 5°-30°.
3. The compressor rear cover structure according to claim 1, characterized in that: The axial side walls of the air inlet channel and the air outlet channel are arranged adjacent to each other.
4. The compressor rear cover structure according to claim 1, characterized in that: The air inlet passage comprises a first air inlet section and a second air inlet section, the second air inlet section is connected between the first air inlet section and the air inlet cavity, and the diameter of the second air inlet section is smaller than the diameter of the first air inlet section; or, The diameter of the air inlet passage increases gradually from one end thereof communicating with the air inlet cavity to the other end.
5. The compressor rear cover structure according to claim 1, characterized in that: The air outlet passage comprises a first air outlet section and a second air outlet section, the second air outlet section is connected between the first air outlet section and the air outlet cavity, and the diameter of the second air outlet section is smaller than the diameter of the first air outlet section; or, The diameter of the air outlet passage increases gradually from one end thereof communicating with the air outlet cavity to the other end.
6. The compressor rear cover structure according to claim 5, characterized in that: The diameter of the second air outlet section gradually increases from one end thereof communicating with the air outlet cavity to one end thereof communicating with the first air outlet section.
7. The compressor rear cover structure according to claim 5, characterized in that: The first air outlet section includes a muffler portion and a connecting portion, and the muffler portion is connected between the connecting portion and the second air outlet section.
8. A bidirectional swash plate compressor, characterized in that: A compressor comprising a rear cover structure as claimed in any one of claims 1 to 7, and a front cover, and a cylinder body consisting of a front cylinder body and a rear cylinder body; The cylinder body is sealed axially between the front cover and the compressor rear cover structure; The gas passage in the cylinder body is connected to the air inlet cavity and the air outlet cavity included in the compressor rear cover structure, and the part of the gas passage connected to the air inlet cavity and the air outlet cavity extends along the axial direction of the cylinder body.