Pump body structure, compressor and heating and ventilation equipment
By setting an oil reservoir and a connecting channel on the end face of the lower bearing, the wear problem between the slider and the lower bearing is solved by using refrigeration oil to lubricate the slider and the lower bearing, thereby improving the energy efficiency of the compressor.
Patent Information
- Application Number
- CN202520504184.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-20
- Publication Date
- 2026-02-27
- Estimated Expiration
- 2035-03-20
AI Technical Summary
Traditional lubrication methods cannot guarantee sufficient lubrication of the contact surface between the slider and the lower bearing, resulting in wear between the slider and the lower bearing, increasing energy loss and component wear.
An oil reservoir and a connecting channel are provided on the end face of the lower bearing to lubricate the contact surface between the slide block and the lower bearing with refrigeration oil, thereby reducing the contact area and improving the lubrication effect.
By improving the lubrication method, the friction between the slider and the lower bearing is reduced, thereby reducing the frictional power loss of the compressor and improving energy efficiency.
Smart Images
Figure CN223952811U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to compressor technical field, in particular to a kind of pump body structure, compressor and heating and ventilation equipment. BACKGROUND
[0002] Rotary compressor is generally composed of shell, pump body and motor arranged in the shell. The pump body includes upper bearing, cylinder, lower bearing, crankshaft, rotor piston and slider. The upper bearing and the lower bearing are arranged on the upper and lower end surfaces of the cylinder respectively and jointly enclose a compression chamber for compressing refrigerant. The rotor piston is sleeved on the crankshaft and movably arranged in the compression chamber. The compression chamber of the cylinder is provided with a sliding slot along the radial direction for the slider to slide. The inner side of the slider abuts against the rotor piston, and the outer side of the slider is connected to the outer side of the sliding slot through the extension spring. The crankshaft drives the rotor piston to rotate circumferentially and pushes the slider to slide in the sliding slot along the radial direction. The extension of the extension spring makes the inner side of the slider always abut against the outer side of the rotor piston.
[0003] During the reciprocating motion of the slider, the slider rubs against the end surface of the lower bearing due to gravity. The traditional lubrication methods such as oil bath lubrication and splash lubrication cannot ensure that the contact surface between the slider and the lower bearing is always fully lubricated. As a result, the slider and the lower bearing are worn out, and the extension spring needs to overcome the friction force generated by the slider and the lower bearing, thereby increasing the energy loss and component wear. SUMMARY
[0004] To overcome the shortcomings of the prior art, the utility model provides a pump body structure, a compressor and a heating and ventilation equipment. By arranging an oil storage groove and a communication channel on the end surface of the lower bearing, the lubrication effect between the slider and the lower bearing can be improved, the friction between the slider and the lower bearing can be reduced, the friction power loss of the compressor can be reduced, and the energy efficiency of the compressor can be improved.
[0005] To achieve the above-mentioned purpose, the first aspect of the utility model embodiment provides a pump body structure, which includes a cylinder, a slider and a lower bearing. The cylinder is provided with a compression chamber along the axial direction. The inner wall of the compression chamber is provided with a sliding slot along the radial direction. The sliding slot penetrates the cylinder along the axial direction. The slider is movably arranged in the sliding slot. The lower bearing is arranged on the lower end surface of the cylinder. An oil storage groove is recessed on the end surface of the lower bearing and the cylinder. The oil storage groove is in communication with the sliding slot, and the oil storage groove is spaced apart from the compression chamber. A communication channel is arranged in the oil storage groove along the axial direction and penetrates the lower bearing.
[0006] Thus, according to the pump body structure of the embodiment of the utility model, the oil storage groove is recessed on the end face of the lower bearing abutting against the cylinder, and the communication passage is provided in the oil storage groove and penetrates the lower bearing in the axial direction, the communication passage can make the refrigerating machine oil stored in the lower part of the compressor enter the oil storage groove under the action of pressure or other extrusion pressure, and then the contact surface between the sliding block and the lower bearing is lubricated by the refrigerating machine oil, and the oil storage groove is arranged below the sliding groove, which can also reduce the contact area between the sliding block and the lower bearing, improve the lubrication effect between the sliding block and the lower bearing, and then reduce the friction between the sliding block and the lower bearing, thereby reducing the friction power loss of the compressor and improving the energy efficiency of the compressor.
[0007] As an embodiment, the projection of the sliding groove in the axial direction covers or completely covers the oil storage groove.
[0008] As an embodiment, the groove width of the sliding groove is D, the groove width of the oil storage groove is d, and d≤0.72D.
[0009] As an embodiment, the length of the sliding block is L, and the groove length of the oil storage groove is W, and W≥0.36L.
[0010] As an embodiment, the thickness of the lower bearing is H, and the groove depth of the oil storage groove is h, and h≤0.3H.
[0011] As an embodiment, the center line of the oil storage groove in the length direction is parallel to the length direction of the sliding groove, and the minimum distance between the oil storage groove and the axis of the lower bearing is greater than the radius of the compression cavity.
[0012] As an embodiment, further comprising an upper bearing, a crankshaft, and a rotor piston, the upper bearing is arranged on the upper end face of the cylinder, the crankshaft is arranged in the upper bearing, the cylinder, and the lower bearing, the rotor piston is sleeved on the crankshaft, and the rotor piston is arranged to roll along the inner wall of the compression cavity, and the sliding block abuts against the outer peripheral surface of the rotor piston.
[0013] As an embodiment, further comprising an upper bearing, an intermediate plate, a crankshaft, and a rotor piston, the number of the cylinders is two, the two cylinders are arranged on the upper and lower ends of the intermediate plate respectively, the upper bearing and the lower bearing are arranged on the end faces of the two cylinders away from the intermediate plate respectively, the crankshaft is arranged in the upper bearing, the cylinder, the intermediate plate, the cylinder, and the lower bearing in sequence in the axial direction, the number of the rotor pistons is two, the two rotor pistons are sleeved on the crankshaft, and the two rotor pistons are arranged in the compression cavities of the two cylinders respectively.
[0014] The utility model embodiment second aspect provides a kind of compressor, it includes the pump body structure described in any one of above. According to the compressor of the utility model embodiment, by setting oil reservoir and communication passage on the end face of lower bearing, the lubrication effect between sliding block and lower bearing can be improved, and then the friction between sliding block and lower bearing is reduced, so that the friction power loss of compressor is reduced, and the energy efficiency of compressor is improved.
[0015] The utility model embodiment third aspect provides a kind of heating equipment, it includes the compressor described in any one of above. According to the heating equipment of the utility model embodiment, by setting oil reservoir and communication passage on the end face of lower bearing, the lubrication effect between sliding block and lower bearing can be improved, and then the friction between sliding block and lower bearing is reduced, so that the friction power loss of compressor is reduced, and the energy efficiency of compressor is improved.
[0016] For better understanding and implementation, the utility model is described in detail below with the drawings. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is one of structural schematic diagram of the pump body structure of the utility model embodiment;
[0018] Figure 2 It is the second structural schematic diagram of the pump body structure of the utility model embodiment;
[0019] Figure 3 It is Figure 2 The cross-sectional view of the direction shown in A-A;
[0020] Figure 4 It is the exploded schematic view of the pump body structure of the utility model embodiment;
[0021] Figure 5 It is one of structural schematic diagram of the lower bearing of the pump body structure of the utility model embodiment;
[0022] Figure 6 It is the second structural schematic diagram of the lower bearing of the pump body structure of the utility model embodiment;
[0023] Figure 7 It is Figure 6 The cross-sectional view of the direction shown in B-B.
[0024] BRIEF DESCRIPTION OF DRAWINGS
[0025] 10, cylinder;11, compression chamber;12, sliding slot;13, sliding block;20, lower bearing;21, oil reservoir;22, communication passage;30, upper bearing;40, crankshaft;41, rotor piston. DETAILED DESCRIPTION
[0026] To further illustrate the embodiments, the utility model provides has the drawing. These drawings are part of the utility model disclosure, which is mainly used to illustrate the embodiments, and can be combined with the related description of the specification to explain the operation principle of the embodiments. With reference to these contents, those skilled in the art should understand other possible implementations and the advantages of the utility model.
[0027] In the related art, the rotary compressor is generally composed of a shell, a pump body and a motor arranged in the shell. The pump body includes an upper bearing, a cylinder, a lower bearing, a crankshaft, a rotor piston and a slider. The upper bearing and the lower bearing are arranged on the upper and lower end faces of the cylinder respectively and jointly enclose a compression chamber for compressing refrigerant. The rotor piston is sleeved on the crankshaft and movably arranged in the compression chamber. The compression chamber of the cylinder is provided with a sliding groove along the radial direction for the slider to slide. The inner side of the slider abuts against the rotor piston, and the outer side of the slider is connected to the outer side of the sliding groove through an extension spring. The crankshaft drives the rotor piston to rotate circumferentially and pushes the slider to slide in the sliding groove along the radial direction. The extension of the extension spring makes the inner side of the slider always abut against the outer side of the rotor piston.
[0028] In the process of reciprocating motion of the slider, the slider is rubbed against the end face of the lower bearing due to gravity. The traditional lubrication methods such as oil bath lubrication and splash lubrication generally cannot ensure that the contact surface between the slider and the lower bearing is always fully lubricated. As a result, not only the slider and the lower bearing are worn, but also the spring needs to overcome the friction force generated by the slider and the lower bearing, thereby increasing the energy loss and the wear of the components.
[0029] In view of this, the utility model embodiment provides a pump body structure, a compressor and a heating and ventilation equipment. According to the pump body structure, the compressor and the heating and ventilation equipment, the oil storage groove 21 and the communication channel 22 are arranged on the end face of the lower bearing 20, the lubrication effect between the sliding block 13 and the lower bearing 20 can be improved, and then the friction between the sliding block 13 and the lower bearing 20 is reduced, so that the friction power loss of the compressor is reduced, and the energy efficiency of the compressor is improved.
[0030] Please refer to Figures 1 to 7 The utility model embodiment provides a pump body structure, which comprises a cylinder 10, a sliding block 13 and a lower bearing 20. The cylinder 10 is provided with a compression chamber 11 along the axial direction. The inner wall of the compression chamber 11 is provided with a sliding groove 12 along the radial direction. The sliding groove 12 penetrates the cylinder 10 along the axial direction. The sliding block 13 is movably arranged in the sliding groove 12. The lower bearing 20 is arranged on the lower end face of the cylinder 10. The end face of the lower bearing 20 is recessed with an oil storage groove 21. The oil storage groove 21 is in communication with the sliding groove 12. The oil storage groove 21 is spaced apart from the compression chamber 11. The communication channel 22 is arranged in the oil storage groove 21 along the axial direction and penetrates the lower bearing 20.
[0031] Thus, according to the pump body structure of the embodiment of the present application, the oil storage groove 21 is recessed on the end face of the lower bearing 20 abutting against the cylinder 10, and the communication passage 22 is formed in the oil storage groove 21 and penetrates the lower bearing 20 in the axial direction, so that the refrigerant oil stored in the lower part of the compressor can enter the oil storage groove 21 under the action of pressure or other extrusion force, and then the contact surface between the sliding block and the lower bearing 20 is lubricated by the refrigerant oil, and the oil storage groove 21 is arranged below the sliding groove 12, so that the contact area between the sliding block and the lower bearing 20 can be reduced, the lubrication effect between the sliding block 13 and the lower bearing 20 can be improved, and then the friction between the sliding block 13 and the lower bearing 20 is reduced, so that the friction power loss of the compressor is reduced, and the energy efficiency of the compressor is improved.
[0032] In the embodiment of the present application, the projection of the sliding groove 12 in the axial direction covers or completely covers the oil storage groove 21. It can be understood that at least part of the oil storage groove 21 is located in the coverage of the axial projection area of the sliding groove 12, so that the refrigerant oil in the oil storage groove 21 can directly lubricate the lower end surface of the sliding block in the sliding groove 12.
[0033] In addition, in the embodiment of the present application, the groove width of the sliding groove 12 is D, the groove width of the oil storage groove 21 is d, d≤0.72D; the length of the sliding block 13 is L, the groove length of the oil storage groove 21 is W, W≥0.36L; the thickness of the lower bearing 20 is H, and the groove depth of the oil storage groove 21 is h, h≤0.3H.
[0034] Optionally, in some embodiments of the present application, the center line of the oil storage groove 21 in the length direction is parallel to the length direction of the sliding groove 12, and the minimum distance between the oil storage groove 21 and the axis of the lower bearing 20 is greater than the radius of the compression chamber 11. It can be understood that in these embodiments, the oil storage groove 21 and the compression chamber 11 are not communicated with each other to prevent gas leakage in the compression chamber 11.
[0035] Optionally, in some embodiments of the present application, the pump body structure further comprises an upper bearing 30, a crankshaft 40 and a rotor piston 41, the upper bearing 30 is arranged on the upper end face of the cylinder 10, the crankshaft 40 penetrates the upper bearing 30, the cylinder 10 and the lower bearing 20, the rotor piston 41 is sleeved on the crankshaft 40, and the rotor piston 41 is arranged to roll along the inner wall of the compression chamber 11, and the sliding block abuts against the outer peripheral surface of the rotor piston 41. It can be understood that in these embodiments, the pump body structure is a single-cylinder structure, and the upper bearing 30 and the lower bearing 20 are arranged on the upper and lower end faces of the cylinder 10 respectively to cover and seal the compression chamber 11 of the cylinder 10.
[0036] Optionally, in some embodiments of the utility model, pump body structure still includes upper bearing 30, intermediate plate, crankshaft 40, rotor piston 41, the number of cylinder 10 is two, two cylinder 10 is arranged on the upper and lower ends of intermediate plate respectively, upper bearing 30 and lower bearing 20 are arranged on the end face of two cylinder 10 away from intermediate plate respectively, crankshaft 40 is sequentially arranged in upper bearing 30, cylinder 10, intermediate plate, cylinder 10 and lower bearing 20 along the axial direction, the number of rotor piston 41 is two, two rotor pistons 41 are all sleeved on crankshaft 40, and two rotor pistons 41 are arranged in the compression chamber 11 of two cylinder 10 respectively. It can be understood that, in these embodiments, the pump body structure is double-cylinder structure, and one cylinder 10 is arranged on the upper and lower end faces of the intermediate plate respectively, and upper bearing 30, intermediate plate and lower bearing 20 cover and seal two cylinder 10 respectively to ensure the airtightness of the compression chamber 11 of two cylinder 10.
[0037] The utility model discloses a pump body structure Figures 1 to 7 The utility model discloses a pump body structure, which is characterized by the following technical solutions.
[0038] The utility model provides a pump body structure, including cylinder 10, sliding block 13, lower bearing 20, upper bearing 30, crankshaft 40, rotor piston 41, cylinder 10 is opened and passed along the axial direction and is set up compression chamber 11, and the inner wall of compression chamber 11 is opened and passed along the radial direction and is set up sliding slot 12, and sliding slot 12 is opened and passed cylinder 10 along the axial direction, and sliding block 13 is movably set up in sliding slot 12, upper bearing 30 is set up on the upper end surface of cylinder 10, and lower bearing 20 is set up on the lower end surface of cylinder 10, and crankshaft 40 is arranged in upper bearing 30, cylinder 10, lower bearing 20, and rotor piston 41 is sleeved on crankshaft 40, and rotor piston 41 is arranged along the inner wall of compression chamber 11 and rolls, and sliding block is abutted on the outer circumferential surface of rotor piston 41.
[0039] Among them, the end surface of lower bearing 20 and cylinder 10 is recessed and is provided with oil storage groove 21, oil storage groove 21 is communicated with sliding slot 12, and oil storage groove 21 is spaced apart from compression chamber 11, and the communication channel 22 is opened and passed in oil storage groove 21 along the axial direction and is set up lower bearing 20.
[0040] In the embodiment, the projection of the sliding slot 12 in the axial direction completely covers the oil storage groove 21, the center line of the oil storage groove 21 along the length direction is parallel to the length direction of the sliding slot 12, and the minimum distance between the oil storage groove 21 and the axis of the lower bearing 20 is greater than the radius of the compression chamber 11.
[0041] In addition, the slot width of the sliding slot 12 is D, the slot width of the oil storage groove 21 is d, d = 0.72D; the length of the sliding block 13 is L, the slot length of the oil storage groove 21 is W, W = 0.36L; the thickness of the lower bearing 20 is H, the slot depth of the oil storage groove 21 is h, h = 0.3H.
[0042] The specific embodiment of the pump body structure according to the utility model will be described in detail below, and it should be understood that the following is only illustrative and cannot be understood as a limitation of the utility model. Figures 1 to 7
[0043] The embodiment provides a pump body structure, which comprises a cylinder 10, a sliding block 13, a lower bearing 20, an upper bearing 30, a crankshaft 40 and a rotor piston 41; the cylinder 10 is provided with a compression cavity 11 penetrating in the axial direction, the inner wall of the compression cavity 11 is provided with a sliding slot 12 in the radial direction, the sliding slot 12 penetrates the cylinder 10 in the axial direction, and the sliding block 13 is movably arranged in the sliding slot 12; the upper bearing 30 is arranged on the upper end face of the cylinder 10, the lower bearing 20 is arranged on the lower end face of the cylinder 10, the crankshaft 40 penetrates the upper bearing 30, the cylinder 10 and the lower bearing 20, the rotor piston 41 is sleeved on the crankshaft 40, and the rotor piston 41 is arranged in rolling mode along the inner wall of the compression cavity 11, and the sliding block abuts against the outer peripheral surface of the rotor piston 41.
[0044] The end face, where the lower bearing 20 and the cylinder 10 are connected, is concave and provided with an oil storage groove 21, the oil storage groove 21 is communicated with the sliding slot 12, and the oil storage groove 21 is arranged in a spaced mode with the compression cavity 11; the oil storage groove 21 is provided with a communication channel 22 penetrating the lower bearing 20 in the axial direction.
[0045] In the embodiment, the projection of the sliding slot 12 in the axial direction completely covers the oil storage groove 21; the center line of the oil storage groove 21 in the length direction is parallel to the length direction of the sliding slot 12, and the minimum distance between the oil storage groove 21 and the axis of the lower bearing 20 is greater than the radius of the compression cavity 11.
[0046] In addition, the slot width of the sliding slot 12 is D, the slot width of the oil storage groove 21 is d, d = 0.65D; the length of the sliding block 13 is L, the slot length of the oil storage groove 21 is W, W = 0.50L; the thickness of the lower bearing 20 is H, and the slot depth of the oil storage groove 21 is h, h = 0.15H.
[0047] The embodiment of the utility model provides a kind of compressor, it includes the pump body structure of any one of above. According to the compressor of the utility model embodiment, by being provided with oil storage groove 21 and communication channel 22 on the end face of lower bearing 20, the lubrication effect between sliding block 13 and lower bearing 20 can be improved, and then the friction between sliding block 13 and lower bearing 20 is reduced, so as to reduce the friction power loss of compressor, improve the energy efficiency of compressor.
[0048] The utility model discloses a third aspect provides a kind of heating equipment, it includes the compressor of any one of above. According to the heating equipment of the utility model embodiment, by setting oil reservoir 21 and communication passage 22 on the end surface of lower bearing 20, the lubrication effect between sliding block 13 and lower bearing 20 can be improved, and then the friction between sliding block 13 and lower bearing 20 is reduced, so as to reduce the friction power loss of compressor, improve the energy efficiency of compressor.
[0049] In the description of the utility model, it needs to understand that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, so it cannot be understood as a limitation on the utility model.
[0050] The above embodiments only express several implementation manners of the utility model, and the description is more specific and detailed, but it cannot be understood as a limitation on the scope of the utility model pump body structure, compressor and heating equipment. It should be pointed out that for ordinary skilled person in the art, without departing from the concept of the utility model, a number of modifications and improvements can be made, which all belong to the protection scope of the utility model.
Claims
1. A pump body structure, characterized in that: comprising a cylinder, a sliding block, a lower bearing; the cylinder is provided with a compression cavity in the axial direction, the inner wall of the compression cavity is provided with a sliding groove in the radial direction, the sliding groove penetrates the cylinder in the axial direction, and the sliding block is movably arranged in the sliding groove; the lower bearing is arranged on the lower end face of the cylinder, the end face of the lower bearing and the cylinder is recessed to form an oil storage groove, the oil storage groove is communicated with the sliding groove, and the oil storage groove is spaced apart from the compression cavity; the oil storage groove is provided with a communication channel penetrating the lower bearing in the axial direction.
2. The pump body structure according to claim 1, characterized in that: the projection of the sliding groove in the axial direction covers or completely covers the oil storage groove.
3. The pump body structure according to claim 1, characterized in that: the groove width of the sliding groove is D, the groove width of the oil storage groove is d, and d≤0.72D.
4. The pump body structure according to claim 1, characterized in that: the length of the sliding block is L, and the groove length of the oil storage groove is W, W≥0.36L.
5. The pump body structure according to claim 1, characterized in that: the thickness of the lower bearing is H, and the groove depth of the oil storage groove is h, h≤0.3H.
6. The pump body structure according to claim 1, characterized in that: the center line of the oil storage groove along its length direction is parallel to the length direction of the sliding groove, and the minimum distance between the oil storage groove and the axis of the lower bearing is greater than the radius of the compression cavity.
7. The pump body structure according to claim 1, characterized in that: further comprising an upper bearing, a crankshaft, and a rotor piston, the upper bearing is arranged on the upper end face of the cylinder, the crankshaft penetrates the upper bearing, the cylinder, and the lower bearing, the rotor piston is sleeved on the crankshaft, and the rotor piston is arranged to roll along the inner wall of the compression cavity, and the sliding block abuts against the outer peripheral surface of the rotor piston.
8. The pump body structure according to claim 1, characterized in that: further comprising an upper bearing, an intermediate plate, a crankshaft, and a rotor piston, the number of the cylinders is two, and the two cylinders are arranged on the upper and lower ends of the intermediate plate respectively, the upper bearing and the lower bearing are arranged on the end faces of the two cylinders away from the intermediate plate respectively, the crankshaft penetrates the upper bearing, the cylinder, the intermediate plate, the cylinder, and the lower bearing in sequence in the axial direction, the number of the rotor pistons is two, and the two rotor pistons are sleeved on the crankshaft, and the two rotor pistons are arranged in the compression cavities of the two cylinders respectively.
9. A compressor, characterized in that: comprising the pump body structure according to any one of claims 1 to 8.
10. A heating and ventilation device, characterized in that: comprising the compressor according to claim 9.