Pin type electric scroll compressor

Abstract

The utility model discloses a pin type electric scroll compressor, and relates to the technical field of scroll compressor manufacturing. The scroll compressor comprises a movable scroll plate arranged at one end of an eccentric main shaft, the other end of the eccentric main shaft is connected with a motor, a bearing seat is arranged between the movable scroll plate and the motor, the eccentric main shaft is installed on the bearing seat, a plurality of grooves are formed in the surface of the bearing seat, rotating rings are arranged in the grooves, and positioning pins are arranged at the positions, at the grooves, of the bearing seat. One end of the positioning pin is inserted into the rotating ring; rotating pins corresponding to the positioning pins in number are arranged on the back surface of the movable scroll plate molded line, and one end of each rotating pin is inserted into the rotating ring. The scroll compressor can solve the problems that only a positioning pin is arranged on a bearing seat of an existing scroll compressor, a rotating ring is arranged on the back face of a molded line of a movable scroll plate, and the single-side stress of the positioning pin is large during working, so that both the rotating ring and the positioning pin are deformed, and the scroll compressor is prone to failing.

Description

Technical Field

[0001] This utility model relates to the field of scroll compressor manufacturing technology, and in particular to a pin-type electric scroll compressor. Background Technology

[0002] A scroll compressor is a highly efficient and energy-saving fluid machine widely used in various fields. Its working principle involves the relative meshing motion of a moving scroll and a stationary scroll to achieve fluid intake, compression, and discharge. During operation, the stationary scroll remains stationary, while the moving scroll, driven by an eccentric main shaft, revolves relative to the stationary scroll. Currently available scroll compressor structures include... Figures 1 to 5 As shown, the device includes a moving scroll 102 that meshes with a stationary scroll 101. The moving scroll 102 is driven to rotate by an eccentric spindle 103. One end of the eccentric spindle 103 is connected to a motor 104, and the other end is connected to the moving scroll 102 via a first bearing 105. A bearing seat 106 is provided between the moving scroll 102 and the motor 104. The eccentric spindle 103 is mounted on the bearing seat 106 via a second bearing 107. The back of the profile of the moving scroll 102 is provided with multiple mounting slots, and each mounting slot is provided with a rotating ring 108. The bearing seat 106 is provided with positioning pins 109 corresponding to the number of mounting slots. One end of the positioning pin 109 is inserted into the rotating ring 108. A bearing pad 110 is provided on the end face of the bearing seat 106 near the moving scroll 102. The back of the profile of the moving scroll 102 abuts against the bearing pad 110, which is made of steel plate.

[0003] When this scroll compressor is working, such as Figures 6 to 8 As shown, the back of the moving scroll 102 slides against the bearing pad 110, and the rotating ring 108 and the locating pin 109 also rotate and rub against each other, generating force. The number of rotating rings 108 and locating pins 109 is the same, generally 3 to 6. The two interact to prevent the moving scroll 102 from rotating on its own. The moving scroll and bearing housing of this structure require high machining precision, which also makes it difficult for lubricating oil to enter the rotating ring. As a result, the rotating ring and locating pin are prone to oil shortage. At the same time, the locating pin on the bearing housing is subjected to a large force on one side, which causes deformation of both the rotating ring and the locating pin, making the scroll compressor prone to failure. Utility Model Content

[0004] The purpose of this invention is to provide a pin-type electric scroll compressor, which can solve the problem that existing scroll compressors only have a locating pin on the bearing housing and the rotating ring is located on the back of the moving scroll plate profile. During operation, the locating pin is subjected to a large force on one side, which causes deformation of both the rotating ring and the locating pin, making the scroll compressor prone to failure.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows: This pin-type electric scroll compressor includes a moving scroll disk located at one end of an eccentric main shaft. The other end of the eccentric main shaft is connected to a motor. A bearing seat is provided between the moving scroll disk and the motor. The eccentric main shaft is mounted on the bearing seat. The surface of the bearing seat is provided with multiple grooves. A rotating ring is provided in each groove. A positioning pin is provided at each groove of the bearing seat. One end of the positioning pin is inserted into the rotating ring. The back of the moving scroll disk profile is provided with rotating pins corresponding to the number of positioning pins. One end of the rotating pin is inserted into the rotating ring.

[0006] A more specific technical solution to the above technical solution may be: the bearing housing is provided with a bearing pad on the end face near the moving scroll disk, and the back side of the moving scroll disk profile abuts against the bearing pad.

[0007] Furthermore, the bearing pad has a self-lubricating material coating on the side surface that abuts against the back of the moving scroll disc profile.

[0008] Furthermore, the plurality of grooves are equidistantly arranged along the circumference of the bearing housing.

[0009] Furthermore, a gap is provided between the outer wall of the rotating ring and the inner wall of the groove.

[0010] Furthermore, the moving scroll disk is mounted at one end of the eccentric main shaft via a first bearing.

[0011] Furthermore, the eccentric spindle is mounted on the bearing housing via a second bearing.

[0012] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0013] In operation, the moving scroll is driven to rotate by the eccentric main shaft. The rotating pin on the moving scroll interacts with the rotating ring and positioning pin on the bearing housing to prevent the moving scroll from rotating on its own. Compared with existing scroll compressors, this invention sets the rotating ring on the bearing housing and adds a rotating pin on the moving scroll, reducing the frictional stress on a single pin. This reduces the deformation of the rotating ring, positioning pin, and rotating pin, thereby improving the service life of the scroll compressor and reducing the failure rate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of an existing scroll compressor.

[0015] Figure 2 yes Figure 1 Schematic diagram of the structure of the centrally moving scroll disk;

[0016] Figure 3yes Figure 1 Schematic diagram of the structure of the bearing housing;

[0017] Figure 4 yes Figure 1 Assembly diagram of the central scroll plate and bearing housing;

[0018] Figure 5 yes Figure 1 Schematic diagram of the structure of the bearing pad;

[0019] Figure 6 This is a schematic diagram showing the relative position of the moving scroll plate of an existing scroll compressor to the bearing housing when it rotates 0 degrees clockwise.

[0020] Figure 7 This is a schematic diagram showing the relative position of the moving scroll plate of an existing scroll compressor to the bearing housing when it rotates 90 degrees clockwise.

[0021] Figure 8 This is a schematic diagram showing the relative position of the moving scroll plate of an existing scroll compressor to the bearing housing when it rotates 180 degrees clockwise.

[0022] Figure 9 This is a schematic diagram of the structure of this utility model;

[0023] Figure 10 yes Figure 9 Schematic diagram of the structure of the centrally moving scroll disk;

[0024] Figure 11 yes Figure 9 Schematic diagram of the structure of the bearing housing;

[0025] Figure 12 yes Figure 9 Assembly diagram of the central scroll plate and bearing housing;

[0026] Figure 13 yes Figure 9 Schematic diagram of the structure of the bearing pad;

[0027] Figure 14 yes Figure 13 Sectional view at point AA;

[0028] Figure 15 yes Figure 14 Enlarged view of point J;

[0029] Figure 16 This is a schematic diagram showing the relative positional relationship between the moving scroll plate of this utility model and the bearing housing when it rotates 0 degrees clockwise.

[0030] Figure 17 This is a schematic diagram showing the relative positional relationship between the moving scroll plate of this utility model and the bearing housing when it rotates 90 degrees clockwise.

[0031] Figure 18 This is a schematic diagram showing the relative position of the moving scroll plate of this utility model with the bearing housing when it rotates 180 degrees clockwise. Detailed Implementation

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments:

[0033] like Figures 9 to 15 The illustrated pin-type electric scroll compressor includes a movable scroll 3 mounted on one end of an eccentric main shaft 2 via a first bearing 1. The other end of the eccentric main shaft 2 is connected to a motor 4. A bearing seat 5 is provided between the movable scroll 3 and the motor 4. The eccentric main shaft 2 is mounted on the bearing seat 5 via a second bearing 6. The surface of the bearing seat 5 is provided with multiple grooves, which are equidistantly arranged along the circumference of the bearing seat 5. A rotating ring 7 is provided in each groove, and there is a gap between the outer wall of the rotating ring 7 and the inner wall of the groove. The bearing seat 5 is provided with a positioning pin 8 at each groove, and one end of the positioning pin 8 is inserted into the rotating ring 7. The back of the movable scroll 3 is provided with rotating pins 9 corresponding to the number of positioning pins 8, and one end of the rotating pin 9 is inserted into the rotating ring 7.

[0034] The bearing housing 5 has a bearing pad 10 on one end face of the moving scroll disk 3. The back of the profile of the moving scroll disk 3 abuts against the bearing pad 10. The bearing pad 10 has a self-lubricating material coating 10-1 on the side surface that abuts against the back of the profile of the moving scroll disk 3.

[0035] In this embodiment, there are three grooves, three rotating rings 7, three positioning pins 8, and three rotating pins 9.

[0036] When this utility model is in operation, such as Figures 16 to 18 As shown, the moving scroll 3 is driven to rotate by the eccentric main shaft 2. The rotating pin 9 on the moving scroll 3 interacts with the rotating ring 7 and the positioning pin 8 on the bearing housing 5 to prevent the moving scroll 3 from rotating on its own. Compared with the existing scroll compressor, this utility model sets the rotating ring 7 on the bearing housing 5 and adds a rotating pin 9 on the moving scroll 3, which reduces the frictional force of a single pin, thereby reducing the deformation of the rotating ring 7, the positioning pin 8 and the rotating pin 9, improving the service life of the scroll compressor and reducing the failure rate.

[0037] The rotating ring 7 is located in the bearing housing 5, which can make the rotating scroll 3 rotate more smoothly and improve the service life of the rotating scroll 3.

[0038] A gap is provided between the outer wall of the rotating ring 7 and the inner wall of the groove, providing ample rotation space for the rotating ring 7. The self-lubricating material coating 10-1 reduces friction between the moving scroll plate 3 and the bearing pad 10 when they slide against each other. The rotating ring 7 of this invention can be designed with a smaller diameter than the rotating ring of existing scroll compressors, resulting in lower material costs.

Claims

1. A pin-type electric scroll compressor, comprising a movable scroll disk disposed at one end of an eccentric main shaft, the other end of the eccentric main shaft being connected to a motor, a bearing housing being provided between the movable scroll disk and the motor, and the eccentric main shaft being mounted on the bearing housing, characterized in that: The bearing housing has multiple grooves on its surface, and a rotating ring is provided in each groove. The bearing housing has a positioning pin at each groove, and one end of the positioning pin is inserted into the rotating ring. The back of the moving scroll plate has rotating pins corresponding to the number of positioning pins, and one end of the rotating pin is inserted into the rotating ring.

2. The pin-type electric scroll compressor according to claim 1, characterized in that: The bearing housing has a bearing pad on the end face near the moving scroll disk, and the back of the moving scroll disk profile abuts against the bearing pad.

3. The pin-type electric scroll compressor according to claim 2, characterized in that: The bearing pad has a self-lubricating material coating on the side surface that abuts against the back of the moving scroll plate profile.

4. The pin-type electric scroll compressor according to any one of claims 1 to 3, characterized in that: The plurality of grooves are equidistantly arranged along the circumference of the bearing housing.

5. The pin-type electric scroll compressor according to claim 4, characterized in that: There is a gap between the outer wall of the rotating ring and the inner wall of the groove.

6. The pin-type electric scroll compressor according to claim 5, characterized in that: The moving scroll disk is mounted at one end of the eccentric main shaft via a first bearing.

7. The pin-type electric scroll compressor according to claim 6, characterized in that: The eccentric spindle is mounted on the bearing housing via a second bearing.

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