A scroll compressor with a spherical check valve structure

Abstract

The utility model discloses a scroll compressor with a ball check valve structure, comprising a static plate, a return air hole is provided on one side of the static plate, a support plate is provided on one side of the static plate, a blocking nail is provided inside the static plate, a spring is provided on one side of the blocking nail, and a steel ball is provided on one side of the spring; the utility model adds a ball check valve structure between the static plate and the support plate through the cooperation of the blocking nail, the spring and the steel ball, so as to ensure that the gas can only flow in one direction and prevent the pressure in the system from flowing back, thereby effectively relieving the pressure of the gas and ensuring other stability; the main part of the ball check valve is the steel ball, which can play the role of end face sealing, and the spring applies pressure to the steel ball. Under normal circumstances, the steel ball is in close contact with the support plate to ensure that there is no leakage. When the gas pressure in the return air hole is too large, the support plate will be pushed open to relieve the pressure. When the pressure becomes smaller, the spring presses the steel ball tightly to seal.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, in particular to a scroll compressor with a spherical check valve structure. Background Art

[0002] The scroll compressor is a fluid machine that uses volume changes to achieve gas compression. Its main movement is that the moving scroll, driven by the rotor, moves in a plane with a very small radius around the center of the static scroll base circle. The low-temperature refrigerant is sucked in from the air inlet for compression and then discharged from the air outlet. The rotor is fixed in the support plate and connected by bearings.

[0003] like Figure 2 , 3 As shown, the existing structure is a combination of a shell 20 and a top cover 14, wherein the internal crankshaft 19 is fixed on the bearing 18 of the support plate 17. The rotation of the crankshaft 19 drives the moving scroll plane to move, and a high-temperature and high-pressure gaseous refrigerant is formed on the back of the static plate 15. A part of the gas passes through the return hole 21, the refrigerant and the lubricating oil and returns to the support plate 17 to lubricate the bearing. However, this part of the gas will continue to accumulate, increase the friction of the moving plate 16, cause abnormal noise in the bearing 18, and shorten the life of the compressor. Utility Model Content

[0004] The purpose of the utility model is to provide a scroll compressor with a spherical check valve structure to solve the existing problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a scroll compressor with a spherical check valve structure, including a stator, a return air hole is provided on one side of the stator, a support plate is provided on one side of the stator, a blocking nail is provided inside the stator, a spring is provided on one side of the blocking nail, and a steel ball is provided on one side of the spring.

[0006] Preferably, a mounting hole is provided on one side of the static plate, the blocking nail, spring and steel ball are all located inside the mounting hole, and the support plate is connected to the mounting hole so that other energy can be transmitted to the steel ball to facilitate pressure relief.

[0007] Preferably, a connecting groove is provided on one side of the blocking nail and the steel ball, and the spring is installed inside the connecting groove, so that the spring can be connected to the blocking nail and the steel ball, which is convenient for subsequently driving the steel ball to reset.

[0008] Preferably, a plurality of connection holes are provided on one side of the static plate to facilitate connecting objects to the static plate.

[0009] Preferably, a mounting ring is provided on the outer side of the air return hole, and the mounting ring is connected to the static disk via fixing bolts, so that the air return hole and the static disk are fixed and disassembly and assembly are convenient.

[0010] Preferably, a connecting plate is provided on one side of the static disk, and a mounting hole is provided on one side of the connecting plate to facilitate the connection and fixation of the static disk as a whole.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the scroll compressor ball check valve structure;

[0012] With the cooperation of plugging pins, springs and steel balls, a ball check valve structure is added between the static plate and the support plate to ensure that the gas can only flow in one direction, prevent the pressure in the system from backflowing, and then effectively relieve the gas pressure to ensure other stability. The main part of the ball check valve is the steel ball, which can act as an end face seal. The spring applies pressure to the steel ball. Normally, the steel ball is in close contact with the support plate to ensure that there is no leakage. When the gas pressure in the return hole is too high, the support plate will be pushed open to relieve pressure. When the pressure becomes smaller, the spring tightens the steel ball seal, and can improve the wear of the dynamic and static plates of the scroll compressor, reduce friction and abnormal noise, and increase the service life of the scroll compressor and the stability of the whole machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front cross-sectional view of the utility model;

[0014] Figure 2 It is a front cross-sectional view of the existing structure of the utility model;

[0015] Figure 3 It is a back view of the air return hole of the existing structure of the utility model;

[0016] Figure 4 This is a schematic diagram of the structure of an additional sealing component in Example 1 of the utility model.

[0017] In the figure: 1. static plate; 2. blocking pin; 3. spring; 4. steel ball; 5. air return hole; 6. support plate. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-Figure 4The utility model provides an embodiment: a scroll compressor with a ball check valve structure, including a static plate 1, a connecting plate is provided on one side of the static plate 1, and a mounting hole is provided on one side of the connecting plate, so that the static plate 1 can be connected and fixed as a whole, a plurality of connecting holes are provided on one side of the static plate 1, so that objects can be connected to the static plate 1 conveniently, a return air hole 5 is provided on one side of the static plate 1, a mounting ring is provided on the outer side of the return air hole 5, and the mounting ring is connected to the static plate 1 by a fixing bolt, so that the return air hole 5 is fixed to the static plate 1, and it is convenient to disassemble and assemble the static plate. A support plate 6 is provided on one side of the plate 1, a blocking nail 2 is provided inside the static plate 1, a spring 3 is provided on one side of the blocking nail 2, a steel ball 4 is provided on one side of the spring 3, a connecting groove is provided on one side of the blocking nail 2 and the steel ball 4, the spring 3 is installed inside the connecting groove, so that the spring 3 can be connected with the blocking nail 2 and the steel ball 4, which is convenient for subsequently driving the steel ball 4 to reset, a mounting hole is provided on one side of the static plate 1, the blocking nail 2, the spring 3 and the steel ball 4 are all located inside the mounting hole, and the support plate 6 is communicated with the mounting hole, so that other energy can be transmitted to the steel ball 4, which is convenient for pressure relief.

[0020] Embodiment 1: Figure 4 As shown, a sealing assembly is provided on the outer side of the stator disk 1, and the sealing assembly includes a rubber sealing ring 7, a push rod 8, a mounting groove 9, a first annular plate 10, a connecting bearing seat 11, a second annular plate 12, and a screw 13. The second annular plate 12 is located on one side of the outer side of 1, and the top and bottom of one side of the second annular plate 12 are symmetrically provided with screws 13, one side of the screw 13 is provided with a connecting bearing seat 11, and one side of the connecting bearing seat 11 is provided with a push rod 8, and one side of the push rod 8 is provided with a rubber sealing ring 7. A first annular plate 10 is provided on the side of the outer side of the stator disk 1 away from the second annular plate 12, and a mounting groove 9 is provided on one side of the first annular plate 10. The rubber sealing ring 7 is located inside the mounting groove 9. During the connection of the device, the connection position can be reinforced again through the assembly, and then during use, the gap and air leakage can be effectively sealed to ensure the airtightness of the connection.

[0021] Working principle: The steel ball 4 is in close contact with the support plate 6 to ensure that there is no leakage. When the pressure is too large, the pressure is transmitted to the steel ball 4 through the support plate 6, and then the pressure pushes the steel ball 4 away, causing the spring 3 to compress, thereby relieving pressure. When the pressure becomes smaller, the spring 3 resets and presses the steel ball 4 tightly, thereby re-sealing the support plate 6.

[0022] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0023] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A scroll compressor with a spherical check valve structure, comprising a stator (1), characterized in that: An air return hole (5) is provided on one side of the static disk (1), a support disk (6) is provided on one side of the static disk (1), a blocking nail (2) is provided inside the static disk (1), a spring (3) is provided on one side of the blocking nail (2), and a steel ball (4) is provided on one side of the spring (3).

2. A scroll compressor with a spherical check valve structure according to claim 1, characterized in that: A mounting hole is provided on one side of the static plate (1), the blocking pin (2), the spring (3) and the steel ball (4) are all located inside the mounting hole, and the support plate (6) is in communication with the mounting hole.

3. The scroll compressor with a ball check valve structure according to claim 1, characterized in that: A connection groove is provided on one side of the blocking nail (2) and the steel ball (4), and the spring (3) is installed inside the connection groove.

4. The scroll compressor with a spherical check valve structure according to claim 1, characterized in that: One side of the static disk (1) is provided with a plurality of groups of connection holes.

5. The scroll compressor with a spherical check valve structure according to claim 1, characterized in that: A mounting ring is provided on the outer side of the air return hole (5), and the mounting ring is connected to the static disk (1) via fixing bolts.

6. The scroll compressor with a spherical check valve structure according to claim 1, characterized in that: A connecting plate is provided on one side of the static disk (1), and a mounting hole is provided on one side of the connecting plate.

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