Static disc and end cover combined structure of scroll electric compressor

Abstract

The utility model discloses a combined structure of a static disc and an end cover of a vortex electric compressor, which reduces the production cost. A static disc and end cover combined structure of a vortex electric compressor comprises a motor shell (1) and an end cover assembly (8), the end cover assembly (8) and the motor shell (1) are fixedly connected through a plurality of bolts (6), a static disc assembly (5) is arranged in the motor shell (1), a high-pressure cavity is defined by the static disc assembly (5) and the end cover assembly (8), and a plurality of positioning pin holes are correspondingly formed in the static disc assembly (5) and the end cover assembly (8). The static disc assembly (5) and the end cover assembly (8) are circumferentially positioned through a plurality of positioning pins (20), a sealing groove (9) is formed in the end face of the inner side of the end cover assembly (8), a sealing ring (7) is arranged in the sealing groove (9) in a sleeved mode, and the sealing ring (7) and the corresponding end face of the static disc assembly (5) are sealed in an attached mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to scroll electric compressor manufacturing technical field, in particular to a kind of static disc and end cover combination structure of scroll electric compressor. BACKGROUND

[0002] The high-pressure cavity sealing part of the existing scroll electric compressor on the market, such as scroll compressor static disc with authorization announcement No. CN111749898B, an annular boss is provided on the static disc, the static disc is positioned radially through the annular boss, and a groove is opened on the static disc and a sealing strip is installed. The processing difficulty of the static disc is high, and the product cost is increased due to the higher machining precision requirement of the static disc than the end cover. SUMMARY

[0003] The utility model aims at overcoming the deficiency of prior art, providing a kind of static disc and end cover combination structure of scroll electric compressor, reduce the production cost.

[0004] The utility model discloses a kind of static disc and end cover combination structure of scroll electric compressor, which is characterized by the following:

[0005] A kind of static disc and end cover combination structure of scroll electric compressor, including motor shell (1), end cover assembly (8), end cover assembly (8), motor shell (1) are fixedly connected by several bolts (6), motor shell (1) is equipped with static disc assembly (5), static disc assembly (5), end cover assembly (8) are enclosed into high-pressure cavity between, corresponding several positioning pin holes are provided on static disc assembly (5), end cover assembly (8), static disc assembly (5), end cover assembly (8) are positioned by several positioning pins (20) circumferentially, sealing groove (9) is provided on the inner side end face of end cover assembly (8), sealing ring (7) is sleeved in sealing groove (9), sealing ring (7) and the corresponding end face of static disc assembly (5) are sealed.

[0006] Preferably, the positioning pin holes on the static disc assembly (5) and the end cover assembly (8) are evenly distributed circumferentially.

[0007] Preferably, the sealing groove (9) on the end cover assembly (8) is irregularly shaped.

[0008] Preferably, the sealing groove (9) of the end cover assembly (8) is provided with a positioning boss (10), and the corresponding part of the sealing ring (7) is provided with a positioning hole.

[0009] Preferably, the positioning boss (10) is oblate.

[0010] Due to the adoption of the above technical scheme, the utility model has the following beneficial effects:

[0011] The sealing groove and the wall where the sealing groove is located of the high and low pressure sealing ring are transferred from the static disc assembly to the end cover assembly, the back surface of the static disc becomes a plane, and the machining difficulty of the static disc is reduced; meanwhile, the machining precision requirement of the static disc is higher than that of the end cover, and the overall manufacturing cost is reduced.

[0012] For the irregular sealing groove and the corresponding boss structure, the machining difficulty and cost are high, the boss structure is cancelled in the patent application, the positioning pin hole for easy machining is used for circumferential positioning, and the sealing groove is transferred to the end cover assembly which is easy to machine, and the overall manufacturing cost is further reduced. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a structure schematic view of the utility model;

[0014] Figure 2 It is a position schematic view of the positioning pin;

[0015] Figure 3 It is a structure schematic view of the end cover assembly;

[0016] Figure 4 It is a structure schematic view of the static disc assembly.

[0017] REFERENCE NUMERALS

[0018] In the drawings, 1 is a motor shell, 2 is a motor rotor assembly, 3 is a dynamic scroll assembly, 4 is an eccentric block, 5 is a static disc assembly, 6 is a bolt, 7 is a sealing ring, 8 is an end cover assembly, 9 is a sealing groove, 10 is a positioning boss, and 20 is a positioning pin. DETAILED DESCRIPTION

[0019] Reference Figures 1-4 It is an embodiment of a static disc and end cover combined structure of a scroll electric compressor, comprising a motor shell 1, an end cover assembly 8, the end cover assembly 8 and the motor shell 1 are fixedly connected through a plurality of bolts 6, the motor shell 1 is internally provided with a static disc assembly 5, a high pressure cavity is enclosed between the static disc assembly 5 and the end cover assembly 8, a plurality of positioning pin holes are correspondingly provided on the static disc assembly 5 and the end cover assembly 8, and the positioning pin holes on the static disc assembly 5 and the end cover assembly 8 are circumferentially and uniformly distributed. The static disc assembly 5 and the end cover assembly 8 are circumferentially positioned through a plurality of positioning pins 20.

[0020] An inner side end surface of the end cover assembly 8 is provided with a sealing groove 9, the sealing groove 9 is internally provided with a sealing ring 7, and the sealing ring 7 is in abutment sealing with a corresponding end surface of the static disc assembly 5. The sealing groove 9 on the end cover assembly 8 is irregularly shaped. The sealing groove 9 of the end cover assembly 8 is internally provided with a positioning boss 10, a corresponding part of the sealing ring 7 is provided with a positioning hole, the positioning hole is sleeved on the positioning boss for positioning. The positioning boss 10 is in the shape of a flat circle.

[0021] In the embodiment, the sealing groove 9 is in the shape of a sunflower seed, the positioning boss 10 is located at the narrower part of the sealing groove 9, and the sealing ring is made of soft material, so it is not easy to align the irregularly shaped sealing ring to the correct position, which affects the sealing effect, and in the utility model, the positioning boss 10 is in the shape of a flat circle, which can realize the circumferential positioning of the sealing ring, and the positioning boss 10 can ensure that the sealing ring is located at the correct position,

[0022] The positioning hole on the sealing ring 7 is a blind hole, which can ensure the sealing effect.

[0023] Specifically,

[0024] The end cover assembly 8 and the motor shell 1 are fixed by a plurality of bolts 6 to form the shell of the compressor pump body; the surface of the static disc assembly 5 and the surface of the end cover assembly 8 have a plurality of positioning pin holes, the positioning pin 20 is fixed through the pin holes on the static disc assembly 5 and the end cover assembly 8, so that the static disc assembly 5 is fixed on the end cover assembly 8 and remains stationary, the sealing ring 7 is installed between the two assemblies, and the middle sealing part forms a high-pressure cavity. The gas enters the pump body from the gas inlet of the motor shell 1, when the compressor is powered on, the motor rotor assembly 2 rotates to drive the motion disc assembly 3 to move, the gas flows into the compression chamber in the motion disc assembly 3 and the static disc assembly 5, and is compressed into high-temperature and high-pressure gas, when the pressure reaches a certain value, the gas pushes open the valve plate and enters the sealed high-pressure cavity.

[0025] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the utility model and not to limit, although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. A static disc and end cover combination structure of a scroll electric compressor, comprising a motor shell (1), an end cover assembly (8), the end cover assembly (8) and the motor shell (1) being fixedly connected through a plurality of bolts (6), the motor shell (1) being provided with a static disc assembly (5), and a high-pressure cavity being enclosed between the static disc assembly (5) and the end cover assembly (8), characterized in that: The static disc assembly (5) and the end cover assembly (8) are provided with a plurality of positioning pin holes corresponding to each other, and the static disc assembly (5) and the end cover assembly (8) are circumferentially positioned through a plurality of positioning pins (20); the inner side end face of the end cover assembly (8) is provided with a sealing groove (9), and the sealing groove (9) is provided with a sealing ring (7) in a sleeving manner; and the sealing ring (7) is sealed in close contact with the corresponding end face of the static disc assembly (5). ​ 2. The static plate and end cover assembly of a scroll electric compressor according to claim 1, wherein: The positioning pin holes on the static disc assembly (5) and the end cover assembly (8) are uniformly distributed in a circumferential direction.

3. The static plate and end cover combination of a scroll electric compressor according to claim 1, characterized in that: The sealing groove (9) on the end cover assembly (8) is irregular in shape.

4. The static plate and end cover combination of a scroll electric compressor according to claim 3, characterized in that: The sealing groove (9) of the end cover assembly (8) is provided with a positioning boss (10), and the corresponding part of the sealing ring (7) is provided with a positioning hole, which is sleeved on the positioning boss for positioning.

5. The static plate and end cover combination of a scroll electric compressor according to claim 1, wherein: The positioning boss (10) is in the shape of a flat circle.

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