A small compressor

Abstract

The utility model discloses a small -size compressor, including front end cover, back end cover and cylinder body. The middle of cylinder body forms a air chamber, is equipped with rotor in the air chamber, and the outer wall of rotor is connected with the inner wall of cylinder body through an movable blade, and the cross section of blade both ends is circular and sets up, and keeps blade both ends gradually concave to the middle, and the width keeps gradually contractive narrow setting. This small -size compressor sets up the eccentric block and the rotating shaft of separable, realizes the eccentric swing of rotor, and realizes the position restriction of rotor with the articulated blade. Through setting up the blade structure of two ends bigger middle narrower, can realize the gas of blade both sides not to be connected, guarantees the sealing of air chamber, improves the compression efficiency of gas in compressor. Simultaneously cooperates the structure of blade, can improve the connecting strength between rotor and cylinder body, improves the stability of whole compressor compression gas process.

Description

Technical Field

[0001] This utility model relates to compressor technology, and more particularly to a small compressor. Background Technology

[0002] Compressors are key components in refrigeration equipment. With increasingly stringent requirements for energy conservation and environmental protection, compressors need to be small in size, energy-efficient, and maintain high refrigeration efficiency. There are various types of compressors, and the rotary compressor is one of them.

[0003] In the case of a oscillating rotor compressor, the oscillation position of the rotor is restricted by blades to compress gas. CN212454822U discloses an oscillating vane compressor in which the rotor is connected to a floating cylinder liner via vanes, dividing the gap between the rotor and the floating cylinder liner into two chambers; one end of each vane is movably connected to the rotor, and the other end is movably connected to the floating cylinder liner. Although it can achieve rapid gas compression, the connection between the vanes and the rotor and floating cylinder liner is restricted by a semi-open structure, which affects the connection strength between the rotor and the floating cylinder liner. Furthermore, the oscillation performance of the rotor is affected during oscillation. Utility Model Content

[0004] To address the shortcomings of the existing technology, this utility model proposes a small compressor.

[0005] A small compressor, characterized in that it comprises:

[0006] Front cover;

[0007] Rear end cover;

[0008] The cylinder body is located between the front cover and the rear cover. The cylinder body, the front cover and the rear cover are connected and fixed by multiple bolts. An air chamber is formed in the middle of the cylinder body. A rotor is provided in the air chamber. A rotating shaft is provided in the middle of the front cover. The rotating shaft extends into the air chamber and connects with the rotor. The outer wall of the rotor and the inner wall of the cylinder body are connected by a movable blade. The cross-section of the blade at both ends is circular, and the blade ends are gradually concave towards the middle, and the width is gradually narrowed.

[0009] In this small compressor of the present invention, a receiving hole is provided in the middle of the rotor, an eccentric block is provided in the receiving hole, and a rotating shaft is provided in the middle of the eccentric block.

[0010] In this small compressor of the present invention, the eccentric block is provided with an eccentric hole in the middle, a blocking surface is provided inside the eccentric hole, and the lower end of the rotating shaft is provided with a mounting end that mates with the eccentric hole.

[0011] In this small compressor of the present invention, a first movable port is provided on the inner wall of the cylinder, a first hinge body is provided in the middle of the first movable port, and a first hinge hole is provided in the middle of the first hinge body.

[0012] In this small compressor of the present invention, a second movable port is provided on the outer wall of the cylinder, a second hinge body is provided in the middle of the second movable port, and a second hinge hole is provided in the middle of the second hinge body.

[0013] In this small compressor of the present invention, the upper and lower ends of the blade are provided with hinged ends, and the hinged ends are connected to each other through connecting parts. The two ends of the hinged ends are provided with hinged parts that cooperate with the first hinge body and the second hinge body. An active area is formed between the hinged parts at the upper and lower ends. The hinged ends and the first hinge body and the second hinge body are hingedly connected through hinge rods.

[0014] In this small compressor of the present invention, the connecting part has a first arc-shaped surface on both sides, a second arc-shaped surface at the first movable opening, and a third arc-shaped surface at the second movable opening. The first arc-shaped surfaces on both sides of the connecting part are in tangential contact with the second arc-shaped surface and the third arc-shaped surface, respectively.

[0015] The small compressor of this invention has the following advantages: By incorporating a separable eccentric block and rotating shaft, the compressor achieves eccentric oscillation of the rotor, and the hinged blades further restrict the rotor's position. The blade structure, wider at both ends and narrower in the middle, prevents gas from communicating with each other, ensuring the airtightness of the gas chamber and improving the compression efficiency of the compressor. Simultaneously, the blade structure enhances the connection strength between the rotor and the cylinder, improving the stability of the entire gas compression process. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the small compressor of this utility model;

[0017] Figure 2 for Figure 1 Exploded view;

[0018] Figure 3 This is a schematic diagram showing the installation state of the cylinder block, rotating shaft, blades, eccentric block and rotor in this utility model;

[0019] Figure 4 for Figure 2 A schematic diagram of the cylinder block structure;

[0020] Figure 5 for Figure 2 A schematic diagram of the rotor structure in the diagram;

[0021] Figure 6 for Figure 2 A schematic diagram of the blade structure in the image;

[0022] Figure 7 for Figure 2 A schematic diagram of the eccentric block and rotating shaft structure. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] like Figures 1 to 7 As shown, this small compressor of the present invention includes a front cover 1, a rear cover 2 and a cylinder 3. The cylinder 3 is located between the front cover 1 and the rear cover 2, and the cylinder 3, the front cover 1 and the rear cover 2 are connected and fixed by a plurality of bolts 4.

[0025] The front cover 1 and the rear cover 2 are provided with air inlet or exhaust port.

[0026] A gas chamber 5 is formed in the middle of the cylinder block 3. A rotor 6 is installed in the gas chamber 5. The center lines of the rotor 6 and the eccentric block 7 do not coincide with the center line of the cylinder block 3, while the center line of the rotating shaft 8 coincides with the center line of the cylinder block 3. A rotating shaft 8 is provided in the middle of the front end cover 1. The rotating shaft 8 extends into the gas chamber 5 and connects with the rotor 6.

[0027] The rotor 6 has a receiving hole 9 in the middle, and an eccentric block 7 is provided inside the receiving hole 9. A rotating shaft 8 is located in the middle of the eccentric block 7. An eccentric hole 10 is provided in the middle of the eccentric block 7, and a blocking surface 11 is provided inside the eccentric hole 10. The lower end of the rotating shaft 8 has a mounting end 111 that mates with the eccentric hole 10. By setting the eccentric block 7, the rotor 6 can be driven to rotate eccentrically within the air chamber 5 more effectively by the rotating shaft 8.

[0028] Because the eccentric block 7 and the rotating shaft 8 are connected by the blocking surface 11, the eccentric block 7 rotates with the rotating shaft 8, and the rotation mode and angle of the rotating shaft 8 and the eccentric block 7 are consistent. Since the eccentric block 7 and the rotor 6 are in contact connection, and the rotor 6 and the rotating shaft 8 are eccentrically set, when the rotating shaft 8 drives the eccentric block 7 to rotate, the rotor 6 is driven by the eccentric block 7 to swing within the air chamber 5.

[0029] The outer wall of the rotor 6 and the inner wall of the cylinder 3 are connected by a movable blade 12. The blade 12 has a circular cross-section at both ends and is gradually concave towards the middle at both ends, with its width gradually narrowing.

[0030] The inner wall of the cylinder body 3 is provided with a first movable port 13, a first hinge body 14 is provided in the middle of the first movable port 13, and a first hinge hole 15 is provided in the middle of the first hinge body 14. The outer wall of the cylinder body 3 is provided with a second movable port 16, a second hinge body 17 is provided in the middle of the second movable port 16, and a second hinge hole 18 is provided in the middle of the second hinge body 17.

[0031] The blade 12 has hinge ends 19 at its upper and lower ends, which are connected by connecting parts 20. Each hinge end 19 has hinge parts 21 at both ends that mate with the first hinge body 14 and the second hinge body 17. A movable area 22 is formed between the hinge parts 21 at the upper and lower ends, within which either the first hinge body 14 or the second hinge body 17 is located. The hinge ends 19 are hinged to the first hinge body 14 and the second hinge body 17 via hinge rods 23.

[0032] Meanwhile, a first arc-shaped surface 24 is provided on both sides of the connecting part 20, a second arc-shaped surface 25 is provided at the first movable opening 13, and a third arc-shaped surface 26 is provided at the second movable opening 16. The first arc-shaped surface 24 on both sides of the connecting part 20 is in tangential contact with the second arc-shaped surface 25 and the third arc-shaped surface 26, respectively.

[0033] When rotor 6 rotates to the point where Figure 3 In the state shown, the first arc surface 24, the second arc surface 25 and the third arc surface 26 are in tangential contact. The gas on both sides of the blade 12 is not connected by the tangential contact, thereby achieving a seal.

[0034] Furthermore, the rotor 6 and the cylinder 3 are connected by blades 12, so the blades 12 can restrict the rotation position of the rotor 6, preventing it from rotating. Instead, the position is restricted by the blades 12, allowing it to only oscillate within the air chamber 5, thereby compressing the gas within the air chamber 5.

[0035] The blade 12 in this application is hinged by the hinge rod 23, which not only improves the stability of the rotor 6 when rotating, but also strengthens the strength between the high-speed oscillating rotor 6 and the cylinder 3. The blade 12 limits the structure of the oscillating rotor 6, so that the rotor 6 can only be in the oscillating state.

[0036] And the length of blade 12 is H1, while Figure 3 The maximum distance between the outer wall of the rotor 6 and the inner wall of the air chamber 5 is H2, where H1 > H2, ensuring that the blades 12 remain tilted throughout the oscillation process of the rotor 6. (Appendix) Figure 3 The angle between the vertical line 27 of the central rotating shaft 8 and the connecting line 28 in the middle of the blade 12 is 53°. When the blade 12 swings, it will not cross the vertical line 27, so that the blade 12 swings within the range between the connecting line 28 and the vertical line 27.

[0037] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A small compressor, characterized in that, include: Front cover; Rear end cover; The cylinder body is located between the front cover and the rear cover. The cylinder body, the front cover and the rear cover are connected and fixed by multiple bolts. An air chamber is formed in the middle of the cylinder body. A rotor is provided in the air chamber. A rotating shaft is provided in the middle of the front cover. The rotating shaft extends into the air chamber and connects with the rotor. The outer wall of the rotor and the inner wall of the cylinder body are connected by a movable blade. The cross-section of the blade at both ends is circular, and the blade ends are gradually concave towards the middle, and the width is gradually narrowed.

2. The small compressor according to claim 1, characterized in that, The rotor has a receiving hole in the middle, an eccentric block is provided in the receiving hole, and a rotating shaft is provided in the middle of the eccentric block.

3. The small compressor according to claim 2, characterized in that, The eccentric block has an eccentric hole in the middle, and a blocking surface is provided inside the eccentric hole. The lower end of the rotating shaft has a mounting end that mates with the eccentric hole.

4. The small compressor according to claim 1, characterized in that, The cylinder body has a first movable opening on its inner wall, a first hinge body in the middle of the first movable opening, and a first hinge hole in the middle of the first hinge body.

5. The small compressor according to claim 4, characterized in that, The cylinder body has a second movable opening on its outer wall, a second hinge body in the middle of the second movable opening, and a second hinge hole in the middle of the second hinge body.

6. The small compressor according to claim 5, characterized in that, The blade has hinged ends at its upper and lower ends, and the hinged ends are connected to each other through connecting parts. The two ends of the hinged ends are provided with hinged parts that cooperate with the first hinge body and the second hinge body. An active area is formed between the hinged parts at the upper and lower ends. The hinged ends are hinged to the first hinge body and the second hinge body through hinge rods.

7. The small compressor according to claim 6, characterized in that, The connecting part has a first arc-shaped surface on both sides, a second arc-shaped surface at the first movable opening, and a third arc-shaped surface at the second movable opening. The first arc-shaped surfaces on both sides of the connecting part are in tangential contact with the second arc-shaped surface and the third arc-shaped surface, respectively.

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