Cylinder of rotor compressor pump assembly and manufacturing method

Abstract

A cylinder of a rotor compressor pump assembly and a manufacturing method, relating to the technical field of compressors. The inner peripheral wall of the cylinder (11) is provided with an air suction portion for suctioning air and a sliding vane seat for accommodating a sliding vane (8). The cylinder (11) is formed by compounding an embedding member and a lightweight material. The sliding vane seat is formed in the embedding member, so that the requirements for movement and wear resistance of the sliding vane (8) in the sliding vane seat can be met. The air suction portion is formed in the embedding member, so that the requirements for the coaxiality and connection strength between the air suction portion and an air suction pipe can be met. The material of the cylinder (11) other than the embedding member is replaced with a lightweight material, so that a lightweight design of the cylinder can be realized while the wear resistance and coaxiality are achieved. Large-scale production and machining can be carried out, so that the production efficiency can be improved, and the consistency of product quality can be ensured.

Description

A cylinder body for a rotary compressor pump and its manufacturing method Cross-references to related applications

[0001] This application claims priority to Chinese Patent Application No. 202510121534.8, filed in China on January 26, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0002] This invention relates to a rotary compressor pump body, and more particularly to a cylinder body for a rotary compressor pump body and a method for manufacturing it. Background Technology

[0003] Rotary refrigeration compressors are widely used in household and similar air conditioners due to their high refrigeration efficiency, compact structure, and small size.

[0004] The compressor pump body is an important component of a rotary refrigeration compressor, mainly composed of a cylinder block, piston, vanes, crankshaft, upper bearing cover, and lower bearing cover.

[0005] Currently, the cylinder block of the compressor pump body is made of cast iron or metallurgical parts, and the existing cylinder blocks have the disadvantages of being heavy and having large rotational inertia.

[0006] Replacing cast iron or metallurgical parts with low-density materials would greatly reduce the weight and rotational inertia of the cylinder; however, low-density materials often cannot meet strength requirements or wear resistance requirements for compressor use.

[0007] In summary, achieving lightweight cylinder design while ensuring cylinder wear resistance has become an urgent problem for researchers in this field. Summary of the Invention

[0008] The technical problem to be solved by this invention is: to achieve a lightweight design of the cylinder block while satisfying the cylinder block's wear resistance.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0010] A cylinder body for a rotary compressor pump body, wherein the inner peripheral wall of the cylinder body has an intake section for intake and a slide seat for accommodating slide vanes, and the cylinder body is made of inserts and lightweight materials.

[0011] Furthermore, the cylinder body is integrally injection-molded or die-cast from the insert and lightweight material.

[0012] Furthermore, the insert is made of cast iron, cast steel, or other metallurgical profiles.

[0013] Furthermore, the lightweight material is an aluminum alloy, a magnesium alloy, a titanium alloy, or an engineering plastic.

[0014] Furthermore, the insert is a slide seat insert and / or an intake seat insert, and the cylinder body base is made of lightweight material.

[0015] Furthermore, the slide seat insert has a slide seat that moves relative to the end of the slide; the suction seat insert has a through suction portion that communicates with the compression chamber inside the cylinder.

[0016] Furthermore, the intake seat insert has an inclined surface, which is attached to one side of the outer wall of the slide seat insert. The axis of the intake seat insert intersects the center line of the slide seat insert at a point, which is the center of the cross-section of the cylinder compression chamber.

[0017] Furthermore, the cylinder body is integrally injection-molded or die-cast from the intake seat insert, the slide plate insert, and a lightweight material.

[0018] Furthermore, the outer surface of the slide block insert is provided with intersecting first grooves.

[0019] Furthermore, the outer peripheral wall of the air intake insert is provided with a circumferential groove, and a circumferential protrusion is provided in the circumferential groove.

[0020] Furthermore, the insert is an integral insert; the integral insert has a slide seat for accommodating the slide and an air intake portion for air intake.

[0021] Furthermore, the outer surface of the integral insert is provided with intersecting second grooves.

[0022] Furthermore, the centerline of the slide block is arranged parallel to the first side surface of the outer side of the integrated insert; the side opposite to the first side surface and located on the other outer side of the integrated insert is the second side surface.

[0023] Furthermore, the axial direction of the air intake is arranged parallel to the second side surface of the integral insert.

[0024] Furthermore, the first side and the second side of the integrated inlay are arranged in parallel, and a connecting hole is provided at the corner formed by the second side and the inner circumferential surface of the integrated inlay.

[0025] Furthermore, the first side and the second side of the integrated inlay are arranged in parallel, and the second side is provided with a clearance portion at the corner of the inner peripheral surface of the integrated inlay.

[0026] This application discloses a method for manufacturing the cylinder body of a rotary compressor pump body, including the following steps: (1) making an injection or die-casting mold for the cylinder body; (2) making an insert; (3) placing and fixing the insert in the mold; (4) injecting or pressing a lightweight material as a base material into the mold, cooling and forming it, and then removing it to obtain a cylinder body containing the insert.

[0027] The beneficial effects of this invention are as follows: This invention relates to a cylinder body for a rotary compressor pump. An insert forms a vane seat within the insert, satisfying the wear-resistance requirements for the vanes moving within the vane seat. An intake section is also formed within the insert, satisfying the requirements for coaxiality and connection strength between the intake section and the intake pipe. This involves replacing the cylinder body material other than the insert with lightweight materials, achieving a lightweight design of the cylinder body while maintaining wear resistance and coaxiality. Existing technologies require processing the vane seat and intake section of the cylinder body one piece at a time, whereas inserts, such as vane seat inserts, integral inserts, or intake seat inserts, can be processed in batches of ten or even dozens, enabling large-scale production. This improves production efficiency and ensures consistent product quality. Attached Figure Description

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Figure 1 is a schematic diagram of the structure of a prior art rotary compressor pump body;

[0030] Figure 2 is a horizontal sectional view of the cylinder block in Embodiment 1 of the present invention;

[0031] Figures 3, 4, and 5 are respectively the right view, cross-sectional view, and left view of the slide block insert of Embodiment 1 of the present invention;

[0032] Figure 6 is a vertical cross-sectional view of the air intake insert of Embodiment 1 of the present invention;

[0033] Figure 7 is a schematic diagram of the structure of the sliding plate seat insert and the piston in Embodiment 1 of the present invention;

[0034] Figure 8 is a horizontal cross-sectional view of the cylinder block in Embodiment 2 of the present invention;

[0035] Figures 9, 10, 11, and 12 are respectively the right view, front view, top view, and left view of the slider seat insert of Embodiment 2 of the present invention;

[0036] Figure 13 is a schematic diagram of the structure of the sliding plate seat insert and the piston in Embodiment 2 of the present invention;

[0037] Figure 14 is a horizontal sectional view of the cylinder body in Embodiment 3 of the present invention;

[0038] Figures 15, 16, 17, and 18 are respectively the left view, horizontal sectional view, vertical sectional view, and right view of the integrated inlay part of Embodiment 3 of the present invention;

[0039] Figure 19 is a partial schematic diagram of the fit between the integral insert, the slide plate, and the piston in Embodiment 3 of the present invention;

[0040] Figure 20 is a horizontal cross-sectional view of the integral inlay in Embodiment 4 of the present invention;

[0041] Figures 21, 22, and 23 are respectively the left view, front view, and right view of the integrated inlay component in Embodiment 4 of the present invention.

[0042] Figure 24 is a partial diagram of the fit between the integral insert, the slide plate, and the piston in Embodiment 4 of the present invention;

[0043] Figure 25 is a horizontal sectional view of the cylinder block in Embodiment 5 of the present invention;

[0044] Figures 26, 27, and 28 are the left view, front view, and right view of the integrated inlay component in Embodiment 5 of the present invention, respectively.

[0045] Figure 29 is a horizontal sectional view of the cylinder block in Embodiment 6 of the present invention;

[0046] Figure 30 is a horizontal cross-sectional view of the integral inlay part according to Embodiment 6 of the present invention;

[0047] Figure 31 is a horizontal sectional view of the cylinder block in Embodiment 7 of the present invention;

[0048] Figure 32 is a horizontal sectional view of the cylinder block of Embodiment 8 of the present invention;

[0049] Figure 33 is a horizontal sectional view of the cylinder block in Embodiment 9 of the present invention;

[0050] Figure 34 is a horizontal cross-sectional view of the integral inlay part of Embodiment 9 of the present invention;

[0051] Figure 35 is a horizontal sectional view of the cylinder block of Embodiment 10 of the present invention;

[0052] Figure 36 is a horizontal sectional view of the integral inlay in Embodiment 10 of the present invention. Detailed Implementation

[0053] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0054] As shown in Figure 1, the existing rotary compressor pump body includes a cylinder 11, a crankshaft 2 with a long shaft 21, an eccentric portion 22, and a short shaft 23, an upper bearing cover 4 located at the top of the cylinder 11, and a lower bearing cover 5 located at the bottom of the cylinder 11. The eccentric portion 22 of the crankshaft 2 is located inside the cylinder 11, and a piston 3 is sleeved on the eccentric portion 22. The upper bearing cover 4 consists of an upper bushing 41 and an upper flange plate 42, and is generally made of cast iron or cast steel blanks and then machined, or made of suitable metal profiles. An exhaust hole (not shown) is opened on the upper flange plate 42, and the exhaust hole is connected to an external exhaust pipe. The lower bearing cover 5 consists of a lower bushing 51 and a lower flange plate 52, and is generally made of cast iron or cast steel blanks and then machined, or made of suitable metal profiles. The long shaft 21 of the crankshaft 2 is located in the upper shaft hole of the upper shaft sleeve 41, and the short shaft 23 of the crankshaft 2 is located in the lower shaft hole of the lower shaft sleeve 51; the inner peripheral wall of the cylinder body 11 is provided with an intake part (not shown) for intake, which is connected to the intake pipe; and a slide seat is provided, in which a slide 8 is provided, the end of which is sealed to the piston 3.

[0055] The present invention will now be described in detail with reference to the accompanying drawings.

[0056] Figure 2 is a horizontal sectional view of the cylinder body of Embodiment 1 of the present invention. The cylinder body of the present invention includes an annular cylinder body base 1-11, an intake seat insert 2-6, and a slider seat insert 2-7; Figures 3, 4, and 5 are respectively the right view, sectional view, and left view of the slider seat insert 2-7 of Embodiment 1 of the present invention; the slider seat insert 2-7 includes a slider seat 7 for accommodating a slider 8, the slider seat 7 having an opening that extends vertically (perpendicular to the direction of the paper), and on the outer surface of the slider seat insert 2-7, there is a first groove 71 with horizontal and vertical intersections, which is used to increase the bonding force between the slider seat insert 2-7 and the cylinder body base 1-11 material, and ensure a firm bond between the slider seat insert 2-7 and the cylinder body base 1-11; from the direction perpendicular to the paper, the left side of Figure 4 is an inclined surface, which forms a certain angle with the longitudinal centerline of the slider seat insert 2-7.

[0057] Figure 6 is a vertical cross-sectional view of the suction seat insert of Embodiment 1 of the present invention; the suction seat insert 2-6 is a generally hollow cylindrical component, the hollow part forming the suction part 6 of the cylinder body. The outer periphery of the cylindrical component is provided with a circumferential groove 62 and a circumferential protrusion 63, which have the same function as the slider seat insert 2-7, both of which are used to increase the bonding force between the suction seat insert 2-6 and the cylinder body base 1-11, and ensure a firm bond between the suction seat insert 2-6 and the cylinder body base 1-11 material; from the direction perpendicular to the paper, the right side of the suction seat insert 2-6 shown in Figure 6 is an inclined surface, which forms a certain angle with the longitudinal center line of the suction seat insert 2-6.

[0058] As shown in Figure 2, after the intake seat insert 2-6 and the slide seat insert 2-7 are placed in the mold or the cylinder base 1-11 containing the above inserts is injected or die-cast, the inclined surface on the right side of the intake seat insert 2-6 contacts and fits with the inclined surface on the left side of the slide seat insert 2-7, and the longitudinal center line of the intake seat insert 2-6 and the longitudinal center line of the slide seat insert 2-7 intersect at the center of the cylinder base 1-11.

[0059] During injection or die casting, the circumferential groove 62 of the intake seat insert 2-6 and the first groove 71 of the slide seat insert 2-7 are filled with lightweight material forming the cylinder body 11. The triangular area adjacent to the intake seat insert 2-6 and the slide seat insert 2-7 is also filled with lightweight material forming the cylinder body 11, thereby ensuring that the inserts are firmly bonded to the cylinder body base 1-11. This prevents both axial and circumferential relative displacement of the intake seat insert 2-6 within the cylinder body base 1-11.

[0060] Figure 7 is a schematic diagram of the structure of the sliding plate seat insert and the piston in Embodiment 1 of the present invention; as shown in Figure 7, one end of the sliding plate 8 is located in the opening of the sliding plate seat insert 2-7, and the other end of the sliding plate 8 is hinged to the piston 3.

[0061] Figure 8 is a horizontal sectional view of the cylinder body of Embodiment 2 of the present invention. In this embodiment, the structure of the intake seat insert 2-6 is the same. The difference between the cylinder body of Embodiment 1 shown in Figure 2 and the slide seat insert 2-7 is that the structures of the two are different. In Embodiment 1, the slide seat is closed at the end away from the center of the slide seat insert 2-7, while in Embodiment 2, the slide seat is provided with a first countersunk groove 73 for installing the spring at the end away from the center of the slide seat insert 2-7. Its specific structure is shown in Figures 9, 10, 11 and 12.

[0062] Figures 9, 10, 11, and 12 are respectively the right view, front view, top view, and left view of the slider seat insert of Embodiment 2 of the present invention. The slider seat insert 2-7 includes a slider seat 7 for accommodating the slider 8. The slider seat 7 has an opening that runs vertically through the slider (perpendicular to the direction of the paper). The slider seat insert 2-7 has a radial (parallel to the direction of the paper) first countersunk groove 73, as shown in Figure 11. The first countersunk groove 73 is perpendicular to the opening. On the outer surface of the slider seat insert 2-7, there is a first groove 71 that is horizontally and vertically intersecting. The first groove 71 is used to increase the bonding force between the slider seat insert 2-7 and the cylinder base 1-11 material, and to ensure a firm bond between the slider seat insert 2-7 and the cylinder base 1-11. From the direction perpendicular to the paper, the left side of Figure 10 is an inclined surface, which forms a certain angle with the longitudinal center line of the slider seat insert 2-7.

[0063] Figure 13 is a schematic diagram of the structure of the sliding plate seat insert and the piston in Embodiment 2 of the present invention. In Figure 13, the sliding plate seat insert 2-7 has a first countersunk groove 73 radially opened at the end away from the piston 3. An elastic element 72, such as a spring, is provided in the first countersunk groove 73. A plug (not shown) is also provided at the outer end of the first countersunk groove 73 to seal the elastic element 72. One end of the sliding plate 8 is located in the opening of the sliding plate seat insert 2-7, and this end abuts against the elastic element 72. The other end of the sliding plate 8 abuts against the piston 3 and is sealed.

[0064] The present invention also relates to a method for manufacturing a cylinder body of a rotary compressor pump body. In a preferred embodiment, as shown in Figures 1-13, firstly, an injection or die-casting mold for the cylinder body 11 as shown in Figures 1, 2, or 8 is made; secondly, a vane seat insert 2-7 and a suction seat insert 2-6 as shown in Figures 6, 4, or 10 are made; thirdly, the vane seat insert 2-7 and / or the suction seat insert 2-6 are placed and fixed in the above-mentioned mold; fourthly, a lightweight material such as aluminum alloy, magnesium alloy, titanium alloy, or engineering plastic is injected or pressed into the mold as a base material, cooled and formed, and then removed to obtain the cylinder body 11 containing the above-mentioned inserts.

[0065] The slide seat 7 is formed within the slide seat insert 2-7 to meet the wear resistance requirements of the slide 8 moving within the slide seat 7. The intake part 6 is formed within the intake seat insert 2-6 to meet the requirements of coaxiality and connection strength between the intake part 6 and the intake pipe. In summary, by replacing the materials of the cylinder body 11 other than the inserts with lightweight materials, a lightweight design of the cylinder body 11 can be achieved while meeting the requirements of wear resistance, coaxiality, and connection strength.

[0066] The following describes Embodiment 3 of the present invention in detail with reference to Figures 14, 15, 16, 17, 18, and 19. Figure 14 is a horizontal sectional view of the cylinder body of Embodiment 3 of the present invention; the cylinder body of the present invention includes a cylinder body base 1-11 and an integral insert 2-9, the outer contour of the cylinder body base 1-11 is an annular structure; Figures 15, 16, 17, and 18 are respectively the left view, front view, vertical sectional view, and right view of the integral insert 2-9; the integral insert 2-9 is provided with a slide seat 7 for accommodating a slide 8 and an air intake 6, the slide seat 7 has an opening that extends vertically (perpendicular to the direction of the paper), as shown in Figure 16, on the outer surface of the integral insert 2-9 (i.e., on the first side 95 on the right and the second side 96 on the left), there is a second groove 91 that is horizontally and vertically intersecting, the second groove 91 is used to increase the bonding force between the integral insert 2-9 and the cylinder body base 1-11 material, ensuring a The integral insert 2-9 is firmly connected to the cylinder base 1-11; viewed from a direction perpendicular to the paper, the second side 96 on the left and the first side 95 on the right in Figure 16 are both vertical planes. The second side 96 is inclined to the axis of the intake part 6, and the first side 95 is parallel to the center line of the slide seat 7; a rounded corner clearance part 93 is provided at the lower left corner of the second side 96, that is, at the corner of the inner circumferential surface of the integral insert 2-9 and the cylinder base 1-11. The purpose of the clearance part 93 is to allow the connecting part to pass through, and the connecting part connects the upper bearing cover 4, the cylinder 11, and the lower bearing cover 5; the outer circumferential surface of the slide seat 7 located away from the center of the cylinder is not closed, and a second countersunk groove 92 is provided. The axis of the second countersunk groove 92 is collinear with the center line of the slide seat 7.

[0067] As shown in Figure 14, after the integral insert 2-9 is placed in the mold or the cylinder base 1-11 containing the insert is injected or die-cast, the axis of the second countersunk groove 92 of the slide seat 7 intersects the axis of the intake part 6 on the axis of the cylinder.

[0068] During injection or die casting, the second groove 91 of the integral insert 2-9 is filled with lightweight material forming the cylinder body 11, thereby ensuring that the integral insert is firmly bonded to the cylinder body base 1-11.

[0069] Figure 19 is a schematic diagram of the structure of the integral insert and the piston 3 and the slide plate 8 in Embodiment 3 of the present invention; one end of the slide plate 8 is located in the opening of the integral insert 2-9, and an elastic element 97, such as a spring, is provided in the second countersunk groove 92. One end of the slide plate 8 abuts against the elastic element 97, and the other end of the slide plate 8 abuts against the piston 3.

[0070] The following describes Embodiment 4 of the present invention in detail with reference to Figures 20, 21, 22, 23, and 24. Figure 20 is a horizontal sectional view of the cylinder body of Embodiment 4 of the present invention; the cylinder body of the present invention includes a cylinder body base 1-11 and an integral insert 2-9, the outer contour of the cylinder body base 1-11 being an annular structure; Figures 21, 22, and 23 are respectively the left view, front view (horizontal sectional view), and right view of the integral insert 2-9; the integral insert 2-9 is provided with a slide seat 7 for accommodating a slide 8 and an air intake 6, the slide seat 7 having an opening extending vertically (perpendicular to the direction of the paper), and on the outer surface of the integral insert 2-9 (i.e., on the first side 95 on the right and the second side 96 on the left), a second groove 91 with horizontal and vertical intersections is provided, the second groove 91 being used to increase the connection between the integral insert 2-9 and the cylinder body base 1-11. The bonding strength of the 11 materials ensures a firm bond between the integrated insert 2-9 and the cylinder base 1-11. Viewed perpendicular to the plane of the paper, the second side 96 on the left and the first side 95 on the right in Figure 22 are both vertical surfaces. The second side 96 is inclined to the axis of the intake section 6, and the first side 95 is parallel to the center line of the slide block 7. In some embodiments, a rounded corner clearance 93 is provided at the corner of the second side 96 and the inner circumferential surface of the cylinder base 1-11. The purpose of this clearance 93 is to allow the connecting member to pass through, connecting the upper bearing cover 4, the cylinder 11, and the lower bearing cover 5. As shown in Figure 22, the outer circumferential surface of the slide block 7 of the integrated insert 2-9, away from the center of the cylinder, is closed.

[0071] As shown in Figure 20, after the integral insert 2-9 is placed in the mold or the cylinder base 1-11 containing the integral insert is injected or die-cast, the axis of the slide seat 7 intersects the axis of the suction part 6 on the axis of the cylinder.

[0072] During injection or die casting, the second groove 91 of the integral insert 2-9 is filled with lightweight material forming the cylinder body 11, thereby ensuring that the integral insert is firmly bonded to the cylinder body base 1-11.

[0073] Figure 24 is a schematic diagram of the structure of the integral insert 2-9 cooperating with the piston 3 and the slide plate 8 in Embodiment 4 of the present invention; one end of the slide plate 8 is located in the opening of the slide plate seat 7 of the integral insert 2-9, and the other end of the slide plate 8 is hinged to the piston 3.

[0074] Example 5

[0075] The following describes Embodiment 5 of the present invention in detail with reference to Figures 25, 26, 27, and 28. Figure 25 is a horizontal sectional view of the cylinder body of Embodiment 5 of the present invention; the cylinder body of the present invention includes a cylinder body base 1-11 and an integral insert 2-9. The outer contour of the cylinder body base 1-11 is an annular structure with an arc-shaped protrusion. This protrusion is mainly used to accommodate the slide seat 7 and the suction part 6, and can increase the axial length of the suction part 6 and the radial length of the slide seat 7; Figures 26, 27, and 28 are respectively the left view, front view (horizontal sectional view), and right view of the integral insert 2-9; the integral insert 2-9 is provided with a slide seat 7 for accommodating the slide 8 and the suction part 6. The slide seat 7 has an opening that extends vertically (perpendicular to the plane of the paper). On the outer surface (i.e., on the first side 95 on the right and the second side 96 on the left), there are intersecting second grooves 91. These second grooves 91 are used to increase the bonding force between the integral insert 2-9 and the cylinder base 1-11, ensuring a firm bond between the integral insert 2-9 and the cylinder base 1-11. From the direction perpendicular to the paper, the second side 96 on the left in Figure 27 is an inclined surface, and the first side 95 on the right is a vertical surface. The second side 96 is parallel to the axis of the intake part 6, and the first side 95 is parallel to the center line of the slide seat 7. As shown in Figure 27, the outer peripheral surface of the slide seat 7 of the integral insert 2-9 away from the center of the cylinder is closed.

[0076] As shown in Figure 25, after the integral insert 2-9 is placed in the mold or after the cylinder base 1-11 containing the integral insert is injection-molded or die-cast, the axis of the slide seat 7 intersects the axis of the suction part 6 on the axis of the cylinder. During injection or die-casting, the second groove 91 of the integral insert 2-9 is filled with the lightweight material forming the cylinder 11, thereby ensuring that the integral insert is firmly bonded to the cylinder base 1-11.

[0077] For a schematic diagram of the structure of the integral insert 2-9 in Example 5, which is in conjunction with the piston 3, the slide 8, and the slide seat 7, please refer to Figure 24.

[0078] The following describes Embodiment 6 of the present invention in detail with reference to Figures 29 and 30. Figure 29 is a horizontal sectional view of the cylinder body of Embodiment 6 of the present invention; the cylinder body of the present invention includes a cylinder body base 1-11 and an integral insert 2-9. The outer contour of the cylinder body base 1-11 is an annular structure with an arc-shaped protrusion. The protrusion is mainly used to accommodate the slide seat 7 and the suction part 6, and can increase the axial length of the suction part 6 and the radial length of the slide seat 7; Figure 30 is a horizontal sectional view of the integral insert 2-9. The integral insert 2-9 is provided with a slide seat 7 for accommodating the slide 8 and the suction part 6. The slide seat 7 has an opening that extends vertically (perpendicular to the direction of the paper). On the outer surface of the integral insert 2-9 (i.e., on the first side 95 on the right and the second side 96 on the left), there are horizontal and vertical cross-sections. The second groove 91 of the fork is used to increase the bonding force between the integral insert 2-9 and the cylinder base 1-11 material, ensuring a firm bond between the integral insert 2-9 and the cylinder base 1-11. From the direction perpendicular to the paper, the second side 96 on the left side of Figure 30 is an inclined surface, and the first side 95 on the right side is a vertical surface. The second side 96 is parallel to the axis of the suction part 6, and the first side 95 is parallel to the center line of the slide seat 7. In some embodiments, as shown in Figures 29 and 30, the outer peripheral surface of the slide seat 7 of the integral insert 2-9 away from the cylinder is not closed, and a second countersunk groove 92 is provided. The axis of the second countersunk groove 92 is collinear with the center line of the slide seat 7.

[0079] As shown in Figure 29, after the integral insert 2-9 is placed in the mold or after the cylinder base 1-11 containing the insert is injection-molded or die-cast, the axis of the slide seat 7 intersects the axis of the suction part 6 on the axis of the cylinder. During injection or die-casting, the second groove 91 of the integral insert 2-9 is filled with the lightweight material forming the cylinder 11, thereby ensuring that the insert is firmly bonded to the cylinder base 1-11.

[0080] For a schematic diagram of the structure of the integral insert 2-9 in Example 6 cooperating with the piston 3 and the slide plate 8, please refer to Figure 19.

[0081] The cylinder base 1-11 in Embodiment 7 is largely the same as that in Embodiment 6. The difference is that, as shown in Figure 31, in addition to the arc-shaped protrusion, a connecting part 98 is provided on the outer peripheral wall of the cylinder base 1-11 on the opposite side of the arc-shaped protrusion. A connecting hole is provided on the connecting part 98. The function of the connecting hole is to connect the upper bearing cover 4 and the lower bearing cover 5 to the cylinder base 1-11. The structural shape of the integral insert 2-9 in Embodiment 7 is the same as that of the integral insert 2-9 in Embodiment 5, and will not be described again here. The cooperation between the integral insert 2-9 and the slide plate 8 and the piston 3 in Embodiment 7 can be referred to Figure 19.

[0082] Example 8

[0083] The cylinder base 1-11 in Example 8 has the same structure as the cylinder base 1-11 in Example 7, as shown in Figure 32. The integral insert 2-9 in Example 8 has the same shape as the integral insert 2-9 in Example 7. The difference is that the outer peripheral wall of the slide seat 7 of the integral insert 2-9 away from the center of the cylinder is closed. As for the cooperation between the integral insert 2-9, the slide 8, and the piston 3, please refer to Figure 24.

[0084] Example 9

[0085] The following describes Embodiment 9 of the present invention in detail with reference to Figures 33 and 34. Figure 33 is a horizontal sectional view of the cylinder body of Embodiment 9 of the present invention; the cylinder body of the present invention includes a cylinder body base 1-11 and an integral insert 2-9. The outer contour of the cylinder body base 1-11 includes a superior arc-shaped structure. The superior arc-shaped structure is provided with a first vertical wall 14 and a second vertical wall 13. The first vertical wall 14 is located to the right of the second vertical wall 13. An integral insert 2-9 is provided between the two vertical walls; Figure 34 is a sectional view of the integral insert 2-9; the integral insert 2-9 is provided with a slide seat 7 for accommodating a slide 8 and an air intake 6. The slide seat 7 has an opening that extends vertically (perpendicular to the direction of the paper). On the outer surface of the integral insert 2-9 (i.e., on the first side 95 on the right and the second side 96 on the left), there is a second groove 91 that is horizontally and vertically intersecting. The second groove 91 is used to increase the bonding force between the integral insert 2-9 and the cylinder body base 1-11 material, and to ensure the strong bond between the integral insert 2-9 and the cylinder body base 1-11. The components are firmly bonded together. From a direction perpendicular to the paper, the second side 96 on the left and the first side 95 on the right in Figure 34 are both vertical surfaces. The second side 96 is inclined to the axis of the intake part 6, and the first side 95 is parallel to the center line of the slide seat 7. As shown in Figure 34, a connecting hole 94 perpendicular to the paper is provided at the lower left corner of the integrated insert 2-9, that is, at the corner formed by the enclosed area of ​​the second side 96 and the inner circumferential surface of the cylinder base 1-11. The purpose of the connecting hole 94 is to allow the connector to pass through. The connector connects the upper bearing cover 4, the cylinder 11, and the lower bearing cover 5 to ensure the connection strength of the three components. As shown in Figure 34, the outer circumferential surface of the slide seat 7 of the integrated insert 2-9 away from the center of the cylinder is not closed, and a second countersunk groove 92 is provided. The axis of the second countersunk groove 92 is collinear with the center line of the slide seat 7.

[0086] As shown in Figure 33, after the integral insert 2-9 is placed in the mold or after the cylinder base 1-11 containing the insert is injected or die-cast, the axis of the slide seat 7 intersects the axis of the suction part 6 on the axis of the cylinder. During injection or die casting, the second groove 91 of the integral insert 2-9 is filled with the lightweight material forming the cylinder 11, thereby ensuring that the insert is firmly bonded to the cylinder base 1-11.

[0087] The cooperation between the integral insert 2-9 and the slide plate 8 and piston 3 in Example 9 can be seen in Figure 19.

[0088] Example 10

[0089] As shown in Figure 35, the cylinder base 1-11 in Example 10 has the same structure as the cylinder base 1-11 in Example 9. The difference is that, as shown in Figure 36, the outer peripheral wall of the integrated insert 2-9 slide seat 7 away from the cylinder is closed. As for the cooperation between the integrated insert 2-9 and the slide 8 and piston 3, please refer to Figure 24.

[0090] Taking Example 3 as an example, the present invention also relates to a method for manufacturing a cylinder body of a rotary compressor pump body. In a preferred embodiment, as shown in Figures 1, 14, 16, and 19, firstly, an injection or die-casting mold for the cylinder body 11 shown in Figures 1 and 14 is made; secondly, an integral insert 2-9 as shown in Figure 16 is made; thirdly, the integral insert 2-9 is placed and fixed in the mold; fourthly, a lightweight material such as aluminum alloy, magnesium alloy, titanium alloy, or engineering plastic is injected or pressed into the mold as a base material, cooled and formed, and then removed to obtain the cylinder body 11 containing the insert.

[0091] The slide block seat 7 and the intake part 6 are formed within the integrated insert 2-9, which can meet the wear resistance requirements of the slide block 8 moving within the slide block seat 7, as well as the requirements of coaxiality and connection strength between the intake part 6 and the intake pipe. In summary, by replacing the materials of the cylinder body 11 except for the integrated insert with lightweight materials, a lightweight design of the cylinder body 11 can be achieved while meeting the requirements of wear resistance, coaxiality and connection strength.

[0092] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. For example, although the present invention uses a circular cylinder block as an example, it is equally applicable to other types of cylinder blocks. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A cylinder body for a rotary compressor pump, wherein the inner peripheral wall of the cylinder body has an intake section for suction and a vane seat for accommodating vanes, the intake seat being connected to an intake pipe, characterized in that, The cylinder body is made of inserts and lightweight materials; the inserts are in contact with the sliding vanes and / or connected to the external intake pipe; The cylinder body includes a cylinder body base and an integral insert. The outer contour of the cylinder body base is an annular structure with an arc-shaped protrusion. This protrusion is used to accommodate the slide block seat and the intake part, and can increase the axial length of the intake part and the radial length of the slide block seat. On the opposite side of the arc-shaped protrusion, a connecting part is provided on the outer peripheral wall of the cylinder base. A connecting hole is provided on the connecting part. The function of the connecting hole is to connect the upper bearing cover, the lower bearing cover and the cylinder base. The inserts are a sliding plate insert and an intake plate insert, and the cylinder body base is made of lightweight material; On the outer surface of the slider holder insert, there is a first groove with horizontal and vertical intersections; Viewed from a direction perpendicular to the paper, the left side of the slider holder insert is an inclined surface, which forms a certain angle with the longitudinal center line of the slider holder insert. The intake seat insert is a hollow cylindrical component, the hollow part of which constitutes the intake part of the cylinder. The outer periphery of the cylindrical component is provided with a circumferential groove and a circumferential protrusion. The right side of the air intake insert is an inclined surface, which forms a certain angle with the longitudinal center line of the air intake insert. The inclined surface on the right side of the intake seat insert contacts and engages with the inclined surface on the left side of the slide vane insert. The longitudinal center line of the intake seat insert intersects with the longitudinal center line of the slide vane insert at the center of the cylinder block base.

2. The cylinder block of a rotary compressor pump body according to claim 1, characterized in that, The cylinder body is integrally injection-molded or die-cast from the insert and lightweight material.

3. The cylinder block of a rotary compressor pump body according to claim 1, characterized in that, The insert is made of cast iron, cast steel or other metallurgical profiles.

4. The cylinder block of a rotary compressor pump body according to claim 1, characterized in that, The lightweight material is an aluminum alloy, magnesium alloy, titanium alloy, or engineering plastic.

5. The cylinder block of a rotary compressor pump body according to claim 1, characterized in that, The slide plate seat insert has a slide plate seat that moves relative to the end of the slide plate; the suction seat insert has a through suction portion that communicates with the compression chamber inside the cylinder.

6. The cylinder block of a rotary compressor pump body according to claim 5, characterized in that, The intake seat insert has an inclined surface that fits against one outer wall of the slide plate insert. The axis of the intake seat insert intersects the center line of the slide plate insert at a point that is the center of the cross-section of the cylinder compression chamber.

7. The cylinder block of a rotary compressor pump body according to claim 5, characterized in that, The cylinder body is integrally injection-molded or die-cast from the intake seat insert, the slide plate insert, and lightweight material.

8. The cylinder body of a rotary compressor pump body according to any one of claims 1-4, characterized in that, The insert is an integral insert; the integral insert has a slide seat for accommodating the slide and an air intake portion for air intake.

9. The cylinder block of a rotary compressor pump body according to claim 8, characterized in that, The outer surface of the integral insert is provided with intersecting second grooves.

10. The cylinder block of a rotary compressor pump body according to claim 8, characterized in that, The centerline of the slide block is parallel to the first side of the outer side of the integral insert; the side opposite to the first side and located on the other outer side of the integral insert is the second side.

11. The cylinder block of a rotary compressor pump body according to claim 10, characterized in that, The axial direction of the air intake is parallel to the second side of the integral insert.

12. The cylinder block of a rotary compressor pump body according to claim 10, characterized in that, The first and second sides of the integrated inlay are arranged in parallel, and a connecting hole is provided at the corner formed by the second side and the inner circumferential surface of the integrated inlay.

13. The cylinder block of a rotary compressor pump body according to claim 10, characterized in that, The first and second sides of the integrated inlay are arranged in parallel, and the second side is provided with a clearance portion at the corner of the inner peripheral surface of the integrated inlay.

14. A method for manufacturing the cylinder block of a rotary compressor pump body as described in any one of claims 1-13, characterized in that, Includes the following steps: (1) Making injection or die-casting molds for cylinder blocks; (2) Making inlays; (3) Place and fix the insert in the above mold; (4) Lightweight material is injected or pressed into the mold as the base material, cooled and formed, and then removed to obtain a cylinder containing the above-mentioned inserts.

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