Air cylinder assembly, compressor pump body and compressor

Abstract

The utility model belongs to the technical field of refrigeration compressors, and discloses an air cylinder assembly, a compressor pump body and a compressor. An air cylinder cavity is formed in the center of the air cylinder body, and an air cylinder sliding piece groove is formed in the circumferential wall of the air cylinder cavity in the radial direction. At the notch end of the air cylinder sliding sheet groove, the joint of the groove wall of the air cylinder sliding sheet groove and the peripheral wall of the air cylinder cavity is of a fillet structure. The fillet structure is located on one side of an air suction cavity of the air cylinder cavity. According to the utility model, the local stress condition of the contact part between the notch of the cylinder slip sheet groove and the side wall of the slip sheet is improved, the friction condition of the matching part between the notch of the cylinder slip sheet groove and the side wall of the slip sheet is greatly improved, the lubrication condition between the cylinder slip sheet groove and the slip sheet is effectively improved, the friction loss and abrasion are reduced, and the service life is prolonged. Therefore, the mechanical efficiency of the cylinder assembly and the compressor pump body is improved, and the working performance of the compressor is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigeration compressors, and particularly relates to a cylinder assembly, a compressor pump body and a compressor. Background Art

[0002] In the rotor compressor, the vane 4 can be slidably arranged in the cylinder vane groove 3 to divide the cylinder cavity in the cylinder body 1 into a compression cavity 101 and an air suction cavity 102; the cylinder vane groove 3 and the vane 4 are a pair of friction pairs, and because both are in a boundary lubrication state, their friction coefficient is often large; secondly, during the operation of the compressor, as the pressure difference between the compression cavity and the air suction cavity increases, an aerodynamic force F perpendicular to the movement direction of the vane 4 will be generated. h , and the aerodynamic force F h The slide vane 4 can be pressed toward the suction chamber side, so that a supporting reaction force N is generated between the tail of the slide vane 4 and the groove wall of the cylinder slide vane groove 3. a , and a supporting reaction force N is generated between the notch of the cylinder vane groove 3 and the side wall of the vane 4 b , as attached Figure 1 shown.

[0003] As attached Figure 2-3 As shown, currently in the process of processing the cylinder vane slot 3 and the vane 4, the notch end 301 of the cylinder vane slot 3 and the tail of the vane 4 are usually chamfered with sharp edges or directly chamfered. Due to the existence of the above structure, when the vane 4 is subjected to the aerodynamic force F h After tilting occurs, the tail of the vane 4 and the groove wall of the cylinder vane groove 3, as well as the groove opening of the cylinder vane groove 3 and the side wall of the vane 4 are in line contact, causing the friction surface of the matching part of the cylinder vane groove 3 and the vane 4 to be in elastic deformation, resulting in large local stress, which makes the lubrication worse and the wear greater, thereby reducing the mechanical efficiency of the cylinder assembly and greatly reducing the pump efficiency of the compressor. Utility Model Content

[0004] In view of the technical problems existing in the prior art, the utility model provides a cylinder assembly, a compressor pump body and a compressor to solve the technical problems in the prior art that the friction surface between the cylinder vane groove and the vane matching part is in elastic deformation, the local stress is large, the lubrication is poor and the wear is increased.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] The utility model provides a cylinder assembly, comprising a cylinder body; a cylinder cavity is arranged at the center of the cylinder body, and a cylinder sliding plate groove is arranged on the peripheral wall of the cylinder cavity along the radial direction;

[0007] At the notch end of the cylinder vane groove, the connection between the groove wall of the cylinder vane groove and the peripheral wall of the cylinder cavity is set as a rounded structure; wherein the rounded structure is set on one side of the suction cavity of the cylinder cavity.

[0008] Furthermore, it also includes a sliding plate, which is slidably arranged in the sliding plate groove of the cylinder; the cross-sectional profile of the sliding plate includes a sliding plate tail section, a first side edge, a sliding plate head section and a second side edge which are connected in sequence from beginning to end;

[0009] The slide tail section is located at the tail of the slide, the slide head section is located at the head of the slide, and the connection between the slide tail section and the first side and the connection between the slide tail section and the second side are both configured as rounded structures.

[0010] Furthermore, the first side edge and the second side edge are arranged in parallel and are both straight lines.

[0011] Furthermore, it also includes a piston rotor, which is arranged in the cylinder cavity. The head of the sliding vane extends to the outside of the slot end of the cylinder sliding vane slot and contacts the outer peripheral surface of the piston rotor.

[0012] Furthermore, a connection between the vane head section and the first side edge and a connection between the vane head section and the second side edge are both configured as rounded structures.

[0013] Furthermore, the cross-section of the groove tail end of the cylinder vane groove is a circular cross-section, and the connection between the groove tail end and the first groove wall of the cylinder vane groove is set as a rounded structure; wherein, the first groove wall is a groove wall structure on the compression chamber side close to the cylinder cavity.

[0014] The utility model also provides a compressor pump body, comprising the cylinder assembly.

[0015] The utility model also provides a compressor, comprising the cylinder assembly or the compressor pump body.

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

[0017] The utility model provides a cylinder assembly, a compressor pump body and a compressor, in which the connection between the groove wall of the cylinder vane groove and the peripheral wall of the cylinder cavity is set to a rounded corner structure, so that the matching position between the notch of the cylinder vane groove and the side wall of the vane is in a flexible line contact between the rounded corner and the plane, and the original line contact between the edge and the plane is optimized to a flexible line contact between the rounded corner and the plane, thereby improving the local stress condition of the contact position between the notch of the cylinder vane groove and the side wall of the vane, greatly improving the friction condition of the matching position between the notch of the cylinder vane groove and the side wall of the vane, effectively improving the lubrication condition between the cylinder vane groove and the vane, reducing friction and abrasion, thereby improving the mechanical efficiency of the cylinder assembly and the compressor pump body, and ensuring the working performance of the compressor.

[0018] Furthermore, the connection between the tail section of the sliding vane and the first side edge and the connection between the tail section of the sliding vane and the second side edge are both set to a rounded structure, so that the matching part between the tail of the sliding vane and the groove wall of the cylinder sliding vane groove is in a flexible line contact between the rounded corner and the plane, thereby reducing the local stress condition at the contact part between the tail of the sliding vane and the groove wall of the cylinder sliding vane groove, greatly improving the friction condition at the matching part between the groove wall of the cylinder sliding vane groove and the tail of the sliding vane, improving the lubrication condition between the cylinder sliding vane groove and the sliding vane, and reducing friction and abrasion.

[0019] Furthermore, the connection between the vane head section and the first side and the connection between the vane head section and the second side are both set to a rounded structure, which effectively improves the friction condition between the vane and the piston rotor, greatly reduces the friction loss between the vane and the piston rotor, and effectively ensures the mechanical efficiency of the cylinder assembly.

[0020] Furthermore, the connection between the groove tail end of the cylinder vane groove and the first groove wall of the cylinder vane groove is set as a rounded structure, so that the matching part between the first groove wall of the cylinder vane groove and the first side edge of the vane is in a flexible line contact state of the rounded corner and the plane, thereby improving the local stress condition of the contact part between the groove wall of the cylinder vane groove and the side wall of the vane groove, improving its friction condition, effectively improving the lubrication condition between the cylinder vane groove and the vane, reducing wear and abrasion, and thereby improving the mechanical efficiency of the cylinder assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of an existing compressor cylinder assembly;

[0022] Figure 2 It is a structural schematic diagram of a cylinder vane groove in an existing compressor cylinder assembly;

[0023] Figure 3 It is a structural schematic diagram of a sliding vane in an existing compressor cylinder assembly;

[0024] Figure 4It is a structural schematic diagram of the cylinder vane groove in Example 1;

[0025] Figure 5 Schematic diagram of the structure of the sliding piece in Example 1.

[0026] Among them, 1 is a cylinder body, 2 is a piston rotor, 3 is a cylinder vane groove, 4 is a vane; 101 is a compression chamber, 102 is an air suction chamber; 301 is a slot end, 302 is a first slot wall, 303 is a second slot wall, 304 is a slot tail end, 305 is a first rounded corner structure, 306 is a second rounded corner structure; 401 is a vane tail section, 402 is a first side edge, 403 is a vane head section, and 403 is a second side edge. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail in the following specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0028] Example 1

[0029] As attached Figure 4-5 As shown, this embodiment 1 provides a cylinder assembly, including a cylinder body 1, a piston rotor 2 and a sliding vane 4.

[0030] A cylinder cavity is arranged at the center of the cylinder body 1, and a cylinder vane groove 3 is arranged on the peripheral wall of the cylinder cavity; the cylinder vane groove 3 is arranged along the radial direction of the cylinder body 1, and the groove end 301 of the cylinder vane groove 3 passes through the inner wall of the cylinder cavity, and the groove tail end 304 of the cylinder vane groove 3 extends toward the outer wall of the cylinder body 1.

[0031] The slot end 301 is an open structure and is located on the peripheral wall of the cylinder cavity; the slot tail end 304 is located in the fan-shaped portion of the cylinder body 1, and the cross-section of the slot tail end 304 is a circular cross-section; wherein a first slot wall 302 and a second slot wall 303 are arranged between the slot end 301 and the slot tail end 304, the first slot wall 302 and the second slot wall 303 are arranged along the radial direction of the cylinder body 1, and the first slot wall 302 and the second slot wall 303 are symmetrical and parallel to each other; wherein the first slot wall 302 is a slot wall structure close to the compression chamber side of the cylinder cavity, and the second slot wall 303 is a slot wall structure close to the suction chamber side.

[0032] The piston rotor 2 is arranged in the cylinder cavity; wherein, the piston rotor 2 is used to be mounted on the crankshaft of the compressor, and can rotate in the cylinder cavity under the drive of the crankshaft; the vane 4 is slidably arranged in the cylinder vane groove 3, and the tail of the vane 4 extends toward the groove tail end 304 of the cylinder vane groove 3, and the head of the vane 4 passes through the outer side of the groove end 301 and then extends into the cylinder cavity, and contacts with the outer peripheral surface of the piston rotor 2; wherein, the piston rotor 2 divides the cylinder cavity into a compression chamber and an intake chamber.

[0033] In the present embodiment 1, at the notch end of the cylinder vane groove 3, the connection between the groove wall of the cylinder vane groove 3 and the peripheral wall of the cylinder cavity is set as a rounded structure; wherein, the rounded structure is set on one side of the suction cavity of the cylinder cavity; specifically, the connection between the second groove wall 303 of the cylinder vane groove 3 and the suction cavity is set as a rounded structure, that is, a first rounded structure 305 is set at the connection between the second groove wall 303 and the suction cavity, the cross-sectional profile of the first rounded structure 305 is a circular arc segment, and one end of the first rounded structure 305 is connected to the second groove wall 303. The other end of the first fillet structure 305 is connected to the suction chamber; by setting the first fillet structure 305 at the connection between the second groove wall 303 and the peripheral wall of the suction chamber, the matching part between the groove of the cylinder vane groove 3 and the second side edge 404 of the vane 4 is in a flexible line contact state between the fillet and the plane, thereby improving the local stress condition of the contact part between the groove of the cylinder vane groove 3 and the side wall of the vane 4, improving its friction condition, effectively improving the lubrication condition between the cylinder vane groove 3 and the vane 4, reducing wear and abrasion, and thereby improving the mechanical efficiency of the cylinder assembly.

[0034] A fillet structure is provided at the connection between the groove tail end 304 of the cylinder vane groove 3 and the first groove wall 303 of the cylinder vane groove 3; specifically, a second fillet structure 306 is provided at the connection between the groove tail end 304 and the first groove wall 303, the cross-sectional profile of the second fillet structure 306 is an arc segment, one end of the second fillet structure 306 is connected to the first groove wall 303, and the other end of the second fillet structure 306 is connected to the groove tail end 304; by providing the second fillet structure 306 at the connection between the groove tail end 304 and the first groove wall 303, the matching part between the first groove wall 303 of the cylinder vane groove 3 and the first side edge 402 of the vane 3 is in a flexible line contact state between the fillet and the plane, thereby improving the local stress condition of the contact part between the groove wall of the cylinder vane groove 3 and the side wall of the vane groove 4, improving its friction condition, effectively improving the lubrication condition between the cylinder vane groove 3 and the vane 4, reducing wear and abrasion, and thereby improving the mechanical efficiency of the cylinder assembly.

[0035] In the present embodiment 1, the cross-sectional profile of the slide 4 includes a slide tail section 401, a first side 402, a slide head section 403 and a second side 404 which are connected in sequence end to end; the slide tail section 401 is located at the tail of the slide 4, and the slide head section 403 is located at the head of the slide 4; the first side 402 and the second side 404 are arranged in parallel and are both straight edges, which are used to connect the slide tail section 401 and the slide head section 403; wherein, the first end of the first side 402 is connected to the first end of the slide tail section 401, the second end of the first side 402 is connected to the first end of the slide head section 403, the first end of the second side 404 is connected to the second end of the slide tail section 401, and the second end of the second side 404 is connected to the second end of the slide head section 403; it should be noted that the first side 402 is arranged close to the first groove wall 302, and the second side 404 is arranged close to the second groove wall 303.

[0036] The connection between the vane tail section 401 and the first side 402 and the connection between the vane tail section 401 and the second side 404 are both set as rounded structures, that is, the vane tail section 401 is set as a rounded section, so that the matching part between the tail of the vane 4 and the groove wall of the cylinder vane groove 3 is in flexible line contact between the rounded corner and the plane, which reduces the local stress condition of the contact part between the tail of the vane 4 and the groove wall of the cylinder vane groove 3, greatly improves the friction condition of the matching part between the groove wall of the cylinder vane groove 3 and the tail of the vane 4, further improves the lubrication condition between the cylinder vane groove 3 and the vane 4, and reduces friction and abrasion.

[0037] The connection between the vane head section 403 and the first side and the connection between the vane head section 403 and the second side are both set to a rounded structure, that is, the vane head section 403 is set to a smooth section, which effectively improves the friction condition between the vane 4 and the piston rotor 2, greatly reduces the friction loss between the vane 3 and the piston rotor 2, and effectively ensures the mechanical efficiency of the cylinder assembly.

[0038] Design principle:

[0039] The cylinder assembly described in the present embodiment 1 optimizes the structure of the cylinder vane groove 3 and the vane 4 so as to optimize the chamfered structure of the mating part between the cylinder vane groove 3 and the vane 4 into a rounded structure, thereby effectively reducing the local friction of the mating part and improving the mechanical efficiency of the cylinder assembly; specifically, the parts that would produce direct line contact between the cylinder vane groove 3 and the vane 4 are all changed into rounded structures, so that the original line contact between the edge and the plane is changed into a flexible line contact between the rounded corner and the plane, so as to optimize the local stress condition of the stressed line contact part, improve friction, optimize lubrication, and reduce friction and wear.

[0040] It should be noted that the cylinder assembly described in this embodiment 1 is suitable for compressors with different refrigerants, different operating conditions and different displacements; among them, different application scenarios include air conditioning and refrigeration, heat pump heating, freezing and refrigeration, etc.

[0041] Example 2

[0042] This embodiment 2 provides a compressor pump body, which is a compressor pump body assembly provided on the basis of the above-mentioned embodiment 1, and the compressor pump body includes the cylinder assembly described in the above-mentioned embodiment 1, and the cylinder assembly is assembled with other parts of the pump body; in the compressor pump body, the lubrication condition between the cylinder vane groove and the vane is effectively improved, thereby greatly improving the mechanical efficiency of the compressor pump body; it should be noted that the other parts of the pump body and the assembly process thereof with the cylinder assembly are basically the same as those of the existing compressor pump body, and will not be repeated here.

[0043] Example 3

[0044] This embodiment 3 provides a compressor, including the cylinder assembly described in the above embodiment 1 or the compressor pump body described in the above embodiment 2; it should be noted that the compressor described in this embodiment 3 is basically the same as the existing compressor, the difference is that the cylinder assembly in the existing compressor is replaced by the cylinder assembly in the above embodiment 1, or the compressor pump body in the above embodiment 2 is used to replace the pump body assembly in the existing compressor, and the rest of the structure is basically the same and will not be repeated here.

[0045] The cylinder assembly, compressor pump body and compressor described in the utility model optimize the cylinder vane groove and the component structure of the vane to achieve the purpose of optimizing the local stress condition of the vane and the cylinder groove, thereby reducing wear and improving mechanical efficiency, thereby achieving the purpose of improving the pump body efficiency of the compressor, effectively meeting the demand for improved compressor performance, and being suitable for different working fluids, different working conditions, different application fields, and the needs of fixed-frequency and variable-frequency products; as the heart of the air conditioner, the compressor has a significant effect on improving the performance of the air conditioner by improving its energy efficiency, so that the compressor product can better meet the needs of the air conditioner system.

[0046] The above embodiment is only one of the implementation methods that can realize the technical solution of the utility model. The scope of protection required by the utility model is not limited only to this embodiment, but also includes within the technical scope disclosed by the utility model, any changes, replacements and other implementation methods that can be easily thought of by any technician familiar with the technical field.

Claims

1. A cylinder assembly, characterized in that: It comprises a cylinder body (1); a cylinder cavity is arranged at the center of the cylinder body (1), and a cylinder sliding plate groove (3) is arranged on the peripheral wall of the cylinder cavity in the radial direction; At the notch end (301) of the cylinder vane groove (3), the connection between the groove wall of the cylinder vane groove (3) and the peripheral wall of the cylinder cavity is arranged as a rounded structure; wherein the rounded structure is arranged on one side of the air intake cavity (102) of the cylinder cavity.

2. A cylinder assembly according to claim 1, characterized in that: It also comprises a sliding vane (4), wherein the sliding vane (4) is slidably arranged in the cylinder sliding vane groove (3); the cross-sectional profile of the sliding vane (4) comprises a sliding vane tail section (401), a first side edge (402), a sliding vane head section (403) and a second side edge (404) which are connected in sequence end to end; The slide tail section (401) is located at the tail of the slide (4), the slide head section (403) is located at the head of the slide (4), and the connection between the slide tail section (401) and the first side edge and the connection between the slide tail section (401) and the second side edge (404) are both configured as rounded structures.

3. A cylinder assembly according to claim 2, characterized in that: The first side edge (402) and the second side edge (404) are arranged in parallel and are both straight lines.

4. A cylinder assembly according to claim 2, characterized in that: It also includes a piston rotor (2), which is arranged in the cylinder cavity, and the head of the sliding vane (4) extends to the outside of the slot end (301) of the cylinder sliding vane slot (3) and contacts the outer peripheral surface of the piston rotor (2).

5. A cylinder assembly according to claim 4, characterized in that: The connection between the vane head section (403) and the first side edge, and the connection between the vane head section (403) and the second side edge are both configured as rounded structures.

6. A cylinder assembly according to claim 1, characterized in that: The cross section of the groove tail end (304) of the cylinder vane groove (3) is a circular cross section, and the connection between the groove tail end (304) and the first groove wall (303) of the cylinder vane groove (3) is arranged as a rounded structure; wherein the first groove wall (303) is a groove wall structure on the side of the compression chamber (101) close to the cylinder chamber.

7. A compressor pump body, characterized in that: Comprising a cylinder assembly as described in any one of claims 1-6.

8. A compressor, characterized in that: It comprises the cylinder assembly as claimed in any one of claims 1 to 6 or the compressor pump body as claimed in claim 7.

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