Cylinder body of rotor type compressor pump body

Abstract

The utility model relates to a cylinder body of a rotor type compressor pump body, which comprises a cylinder body base body made of light materials, and a sliding vane seat insert and / or an air suction seat insert are / is embedded in the cylinder body base body. The plurality of positioning inserts are arranged on the outer peripheral surface of the cylinder body base body around the center of the cylinder body; when the cylinder body is replaced with the cylinder body base body made of the light material, the positioning insert is made of the same material as an original cylinder body and arranged on the peripheral face of the cylinder body base body, the positioning insert and the compressor shell are welded, firm connection between the cylinder body and the shell is guaranteed, and then stability of connection between the cylinder body and the shell is guaranteed.

Description

Technical Field

[0001] This utility model relates to a rotary compressor pump body, and more particularly to a cylinder body of a rotary compressor pump body. Background Technology

[0002] Rotary refrigeration compressors are widely used in household and similar air conditioners due to their high refrigeration efficiency, compact structure, and small size.

[0003] When a lightweight design is required for the rotary compressor pump body, the cylinder body needs to be replaced with a cylinder body base made of lightweight material to meet the requirements of pump body lightweighting; however, this brings a new problem, namely, the cylinder body needs to be welded to the compressor housing to ensure the stability of the pump body operating in the housing. If a cylinder body base made of lightweight material is used, it is impossible to weld it to the housing.

[0004] In summary, how to weld lightweight cylinder blocks to compressor housings has become an urgent problem for researchers in this field. Summary of the Invention

[0005] The technical problem to be solved by this utility model is: how to weld the cylinder body made of lightweight material to the compressor housing;

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] This utility model relates to a cylinder body of a rotary compressor pump body, a cylinder body base made of lightweight material, which is embedded with a sliding vane seat insert and / or a suction seat insert; a plurality of positioning inserts are arranged around the center of the cylinder body on the outer peripheral surface of the cylinder body base.

[0008] Furthermore, the lightweight material is an aluminum alloy, magnesium alloy, titanium alloy, or engineering plastic, and the lightweight material constitutes the cylinder block matrix.

[0009] Furthermore, the positioning insert is made of cast iron, cast steel, or metal profile.

[0010] Furthermore, the surface of the positioning inlay that is away from the cylinder base is provided with an inward groove.

[0011] Furthermore, an annular groove is provided on the outer wall of the positioning insert, and the annular groove is opened inward along the outer contour of the exhaust hole insert.

[0012] The beneficial effects of this utility model are as follows: This utility model is a cylinder body of a rotary compressor pump body. When the cylinder body is replaced with a cylinder body base made of lightweight material, the positioning insert is made of the same material as the original cylinder body and is set on the outer peripheral surface of the cylinder body base. The positioning insert is welded to the compressor housing to ensure a firm connection between the cylinder body and the housing, thereby ensuring the stability of the connection between the cylinder body and the housing. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0014] Figure 1 This is a schematic diagram of the structure of a rotary compressor pump body in the prior art;

[0015] Figure 2 This is a horizontal sectional view of the cylinder block;

[0016] Figure 3 This is a cross-sectional view of the positioning insert;

[0017] Figure 4 This is the main view of the positioning inlay. Detailed Implementation

[0018] 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 present invention, and therefore only show the components relevant to the present invention.

[0019] Existing rotary compressor pump bodies, such as Figure 1 As shown, the compressor pump body includes a cylinder block 11, a crankshaft 2 having a long shaft 21, an eccentric portion 22, and a short shaft 23, a lower bearing cover 4 disposed at the top of the cylinder block 11, and a lower bearing cover 5 disposed at the bottom of the cylinder block 11; the eccentric portion 22 of the crankshaft 2 is located inside the cylinder block 11, and a piston 3 is sleeved on the eccentric portion 22; the lower bearing cover 4 is composed of an upper bushing 41 and an upper flange plate 42, and the lower bearing cover 5 is composed of a lower bushing 51 and a lower flange plate 52; the long shaft 21 of the crankshaft 2 is located in the upper shaft hole of the upper bushing 41, and the short shaft 23 of the crankshaft 2 is located in the lower shaft hole of the lower bushing 51; and a sliding vane slot seat is provided, in which a sliding vane 8 is disposed, and the end of the sliding vane 8 is sealed to the piston 3; the cylinder block 11 is generally machined from cast iron or cast steel blanks, or machined from suitable metal profiles.

[0020] The following reference Figure 2 , Figure 3 , Figure 4 The cylinder block of the present invention will be described in detail.

[0021] Figure 2This is a horizontal sectional view of the cylinder block, showing a ring-shaped cylinder base 1-11. The cylinder base 1-11 has a shape roughly the same as the cylinder 1, except that the cylinder base 1-11 is made of a lightweight material, specifically aluminum alloy, magnesium alloy, titanium alloy, or engineering plastic. Positioning inserts 2-12 are evenly spaced on the outer circumference of the cylinder base 1-11. The positioning inserts 2-12 and the cylinder base 1-11 are injection molded or die-cast. The material of the positioning inserts 2-12 is the same as that of the cylinder 1 in the prior art, made of cast iron, cast steel, or metal profiles. This facilitates welding with the compressor housing, thereby ensuring the connection strength between the compressor housing and the cylinder block.

[0022] The cylinder base 1-11 is provided with a suction seat insert 2-6 and a slider seat insert 2-7. The suction seat insert 2-6 together form a suction seat 6. The slider seat insert 2-7 is provided with a sliding groove seat 7 perpendicular to the paper plane for the end of the slider 8 to move. The suction seat insert 2-6, the slider seat insert 2-7 and the cylinder base 1-11 are injection molded or die-cast.

[0023] Figure 3 This is a cross-sectional view of the positioning insert. The outer peripheral surface of the positioning insert 2-12 in the figure is provided with an annular groove 13. The function of the annular groove 13 is that during injection, the lightweight material is filled into the annular groove 13 to increase the bonding force between the lightweight material and the insert. Figure 3 The right side of the positioning insert 2-12 is a recessed groove 14 facing left, and the left side is a vertical surface. The left side of the positioning insert 2-12 is connected to the cylinder base 1-11, and the right side groove 14 is exposed to facilitate welding with the compressor housing. The groove 14 is recessed inward along the radial direction of the cylinder base 1-11. The compressor housing deforms at the groove 14 and is then welded. In this way, the weld point generated by welding the compressor housing and the positioning insert 2-12 will not protrude from the compressor housing, thus protecting the weld point.

[0024] Figure 4 This is the front view of the positioning insert. In the figure, the outer contour of the positioning insert 2-12 is set concentrically with the contour of the groove 14.

[0025] In summary, when the cylinder body 1 is replaced with a cylinder body base 1-11 made of lightweight material, the positioning insert 2-12 is made of the same material as the original cylinder body 1 and is set on the outer peripheral surface of the cylinder body base 1-11. The positioning insert 2-12 is welded to the compressor housing to ensure a firm connection between the cylinder body 1 and the housing, thereby ensuring the stability of the connection between the cylinder body 1 and the housing.

[0026] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A cylinder block for a rotary compressor pump body, characterized in that, include: The cylinder body is made of lightweight material and has a sliding vane insert and / or an intake seat insert embedded therein; Multiple positioning inserts are disposed around the center of the cylinder body on the outer peripheral surface of the cylinder body base.

2. 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, and the lightweight material constitutes the cylinder block matrix.

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

4. The cylinder block of a rotary compressor pump body according to claim 1, characterized in that, The positioning inlay has an inwardly recessed groove on the surface away from the cylinder base.

5. The cylinder block of a rotary compressor pump body according to claim 1, characterized in that, An annular groove is provided on the outer wall of the positioning insert, and the annular groove is opened inward along the outer contour of the exhaust hole insert.

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