Pipeline structure of totally-enclosed compressor

Abstract

The utility model discloses a pipeline structure of a totally-enclosed compressor, which belongs to the technical field of refrigeration compressors and comprises a lower shell, a flange sleeve is penetratingly arranged at one end of the lower shell, one end, penetrating through the lower shell, of the flange sleeve protrudes out of the bottom of the lower shell, a copper pipe is arranged at the other end of the flange sleeve, and external threads are arranged at one end of the copper pipe. An external thread is arranged at one end of the flange sleeve, an internal thread is arranged at one end of the flange sleeve, the external thread and the internal thread are matched with each other and matched in a threaded mode, a sealing piece used for achieving a sealing effect is arranged between the external thread and the internal thread, and a blocking piece is arranged at the end, located in the flange sleeve, of the copper pipe and provided with a through opening used for being communicated with the copper pipe. The end, located outside the lower shell, of the flange sleeve is provided with a limiting piece used for limiting the copper pipe, the clamping block is in a right trapezoid shape, the inclined face of the clamping block is located outside the sliding groove, the inclined face of the clamping block is located at the end away from the containing groove, and the flange sleeve and the copper pipe can be conveniently separated and cleaned.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration compressors, and more specifically to a pipeline structure of a fully enclosed compressor. Background Art

[0002] There are three pipe ports on the outside of a general refrigerator compressor, commonly known as the process pipe, the suction pipe, and the exhaust pipe. The simple working principle of the compressor is that the motor drives the crankshaft to rotate. The rotation of the crankshaft causes the crank on the crankshaft to drive the piston to make reciprocating linear motion in the cylinder through the connecting rod. It inhales low-temperature and low-pressure refrigerant gas from the suction pipe, compresses it through the motor, and then discharges high-temperature and high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle, thereby realizing the refrigeration cycle of compression → condensation → expansion → evaporation (heat absorption). The functions of the three pipe ports are as follows: the suction pipe recycles the refrigerant that absorbs heat inside the evaporator to the compressor for recycling. The temperature of this pipe is relatively low during operation; the exhaust pipe discharges the compressed refrigerant to the condenser for heat dissipation. The temperature of this pipe is relatively high during operation; the process pipe is used to charge refrigerant and refrigeration oil during production or maintenance. After charging, the end of the process pipe is closed by gas welding, which is a blind pipe. As mentioned above, the refrigerant gas temperature on the suction pipe side is relatively low. Once the refrigerant enters the inner cavity of the shell, the temperature will rise significantly. A high suction temperature is not conducive to improving the performance of the compressor. The rotation of the crankshaft brings the lubricating oil at the bottom of the shell to the friction pairs at the top, and the thrown lubricating oil will flow along the inner wall of the shell to the bottom of the lower shell. In this process, the compressor sometimes inhales lubricating oil into the refrigeration system. The oil in the refrigeration system is not conducive to improving the performance of the compressor and there is a risk of carbon deposition on the valve group.

[0003] Chinese patent application number CN202021463341.X discloses a pipeline structure of a fully enclosed compressor, including a lower shell, a flange sleeve and a copper tube, the flange sleeve is welded and fixed to the lower shell, the copper tube is welded and fixed to the flange sleeve, the inner diameter of the flange sleeve is larger than the outer diameter of the copper tube, and one end of the copper tube extends into the flange sleeve. The utility model provides a pipeline structure of a fully enclosed compressor, which effectively reduces the risk of oil being sucked into the refrigeration system, and the above structure is not easy to form an oil film, which can reduce the carbon deposition defect of the valve group and improve the performance of the compressor.

[0004] The above solution is implemented by changing the inner diameter of the flange sleeve and the copper tube, thereby effectively reducing the risk of oil inhalation into the refrigeration system by means of diameter change. However, the above solution adopts welding. In actual use, although the sealing can be guaranteed, the installation is more troublesome. Although the oil ingress can be reduced, a small amount of oil will still enter, resulting in a small amount of carbon deposition, and subsequent cleaning and maintenance are more troublesome. In view of the above problems, a solution is proposed as follows Utility Model Content

[0005] Aiming at the problems existing in the prior art, the purpose of the present utility model is to provide a pipeline structure for a fully enclosed compressor, which can facilitate the separation and cleaning of the flange sleeve and the copper pipe.

[0006] To solve the above problems, the present utility model adopts the following technical solutions.

[0007] A pipeline structure for a fully enclosed compressor, including a lower housing, one end of the lower housing is provided with a flange sleeve, the flange sleeve passes through one end of the lower housing and protrudes from the bottom of the lower housing, the other end of the flange sleeve is provided with a copper pipe, one end of the copper pipe is provided with an external thread, one end of the flange sleeve is provided with an internal thread, the external thread and the internal thread are mutually adapted and in threaded cooperation, a sealing member for sealing is arranged between the external thread and the internal thread, one end of the copper pipe located inside the flange sleeve is provided with a baffle, and a through hole for communicating with the copper pipe is arranged on the baffle, and a limiting member for limiting the copper pipe is arranged at one end of the flange sleeve located outside the lower housing.

[0008] Preferably, the limiting member includes a receiving piece, a spring, a clamping block and a moving block, the receiving piece is sleeved on the flange sleeve, an annular placing groove is arranged at one end of the receiving piece, the moving block is placed inside the placing groove, and the moving block is sleeved on the copper pipe and fixedly connected, a sliding groove is arranged on the inner side of the placing groove, the spring is arranged inside the sliding groove, and the clamping block is in sliding cooperation with the sliding groove, and one end of the spring is fixedly connected with one end of the clamping block.

[0009] Preferably, a connecting rod is arranged inside the sliding groove, the connecting rod is located in the middle of the spring, and one end of the connecting rod passes through the bottom of the sliding groove and is in sliding cooperation with the sliding groove, and the other end of the connecting rod is fixedly connected with the top of the clamping block.

[0010] Preferably, a convex block is arranged at one end of the connecting rod.

[0011] Preferably, the clamping block is in the shape of a right trapezoid, and the inclined surface of the clamping block is located outside the sliding groove, and the inclined surface of the clamping block is located at one end away from the placing groove.

[0012] Preferably, the baffle is hemispherical.

[0013] Preferably, the sealing member is raw tape.

[0014] Compared with the prior art, the advantages of the present utility model are as follows:

[0015] 1. This solution reduces the risk of oil being sucked into the refrigeration system by changing the inner diameters of the copper pipe and the flange sleeve, i.e., there is a diameter change treatment between the copper pipe and the flange sleeve. At the same time, the threaded fit between the copper pipe and the flange sleeve enables a detachable fit. The seal can enhance the sealing performance, preventing liquid leakage at the connection. Meanwhile, the limiting member limits the relative movement between the flange sleeve and the copper pipe.

[0016] 2. The receiving piece and the clamping block clamp and limit the moving block, thus fixing the positions of the copper pipe and the flange sleeve. At the same time, the spring can provide an elastic force to keep the clamping block in position, preventing the random movement of the clamping block.

[0017] 3. When the threaded rod is rotated, the clamping block will move relative to the threaded rod, and thus the clamping block will retract into the sliding groove, i.e., the restriction on the moving block is removed, facilitating the separation of the moving block and the receiving piece.

[0018] 4. The notch is used to facilitate the rotation of the connecting rod with a screwdriver.

[0019] 5. The design of the inclined surface facilitates the action of the moving block on the inclined surface, directly pushing the clamping block to retract into the sliding groove, avoiding manual pulling of the clamping block.

[0020] 6. The hemispherical design can reduce the opening diameter of one end of the copper pipe located inside the flange sleeve.

[0021] 7. The raw tape is used to seal the connection between the flange sleeve and the copper pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the overall cross-sectional structure schematic diagram of the present utility model;

[0023] Figure 2 is the three-dimensional structure schematic diagram of the flange sleeve and the receiving piece of the present utility model;

[0024] Figure 3 is the three-dimensional structure schematic diagram of the copper pipe, the retaining piece and the moving block of the present utility model;

[0025] Figure 4 is the cross-sectional structure schematic diagram of the top view of the receiving piece of the present utility model;

[0026] Figure 5 is the cross-sectional structure schematic diagram of the front view of the receiving piece of the present utility model;

[0027] Figure 6 is the enlarged structure schematic diagram of A of the present utility model.

[0028] Description of the reference numerals in the drawings:

[0029] 1. Lower shell; 2. Flange sleeve; 3. Copper tube; 4. External thread; 5. Internal thread; 7. Baffle; 8. Through port; 9. Limiting piece; 10. Socket; 11. Spring; 12. Block; 13. Moving block; 14. Placement groove; 15. Slide groove; 16. Connecting rod; 17. Bump. DETAILED DESCRIPTION

[0030] Embodiment 1:

[0031] See also Figure 1-6 A piping structure of a fully enclosed compressor includes a lower shell 1, an opening is opened at one end of the lower shell 1, a flange sleeve 2 is passed through the opening of the lower shell 1, the flange sleeve 2 and the shell are fixed by welding, the flange sleeve 2 passes through the opening of the lower shell 1 and protrudes from the bottom of the lower shell 1, and the protruding design can also reduce the risk of oil being sucked into the refrigeration system. The outer diameter of the lower shell 1 and the opening are adapted to each other to ensure sealing and prevent oil from flowing out through the gap between the opening and the flange sleeve 2.

[0032] A copper tube 3 is provided at the other end of the flange sleeve 2. The inner diameter of the copper tube 3 is smaller than the inner diameter of the flange sleeve 2, so that the inner diameter of the pipeline is changed in the process from the flange sleeve 2 to the copper tube 3, thereby reducing the risk of oil being sucked into the refrigeration system. An external thread 4 is provided at one end of the copper tube 3, and an internal thread 5 is provided at one end of the flange sleeve 2. The external thread 4 and the internal thread 5 are adapted to each other and the threads are matched. At the same time, the threads between the copper tube 3 and the flange sleeve 2 are matched, so as to achieve detachable matching. A sealing member for sealing is provided between the external thread 4 and the internal thread 5. The sealing member is a raw tape. The raw tape is used to seal the connection between the flange sleeve 2 and the copper tube 3 to avoid leakage at the connection. A baffle 7 is provided at one end of the copper tube 3 located inside the flange sleeve 2. The baffle 7 is hemispherical. A through hole 8 for communicating with the copper tube 3 is provided on the baffle 7. The through hole 8 is concentric with the inner diameter of the copper tube 3. The hemispherical design can reduce the aperture of the opening at one end of the copper tube 3 located inside the flange sleeve 2.

[0033] One end of the flange sleeve 2 located outside the lower housing 1 is provided with a limiting member 9 for limiting the copper pipe 3. At the same time, the limiting member 9 plays a limiting role between the flange sleeve 2 and the copper pipe 3, preventing relative movement between the flange sleeve 2 and the copper pipe 3. The limiting member 9 includes a receiving piece 10, a spring 11, a clamping block 12 and a moving block 13. The receiving piece 10 is annular and sleeved on the flange sleeve 2. One end of the receiving piece 10 is provided with an annular placement groove 14, and the placement groove 14 is concentric with the flange sleeve 2. The moving block 13 is annular and placed inside the placement groove 14. The moving block 13 is adapted to the placement groove 14 and is sleeved on the copper pipe 3 and fixedly connected. Symmetrically arranged sliding grooves 15 are opened on the inner side of the placement groove 14. The cross-section of the sliding groove 15 is rectangular and is adapted to the clamping block 12, which can prevent the clamping block 12 from rotating inside the sliding groove 15. The spring 11 is arranged inside the sliding groove 15. One end of the spring 11 is fixedly connected to the top of the sliding groove 15, and the clamping block 12 is slidably matched with the sliding groove 15. One end of the spring 11 is fixedly connected to one end of the clamping block 12. The clamping block 12 is in the shape of a right trapezoid, and the inclined surface of the clamping block 12 is located outside the sliding groove 15 and at one end away from the placement groove 14. The design of the inclined surface facilitates the moving block 13 to act on the inclined surface, thereby directly pushing the clamping block 12 back into the sliding groove 15, avoiding manual pulling of the clamping block 12.

[0034] A connecting rod 16 is inserted through the sliding groove 15. The cross-section of the connecting rod 16 is circular, and the connecting rod 16 and the sliding groove 15 can slide relative to each other. One end of the connecting rod 16 is located in the middle of the spring 11 and is fixedly connected to the corresponding clamping block 12. A convex block 17 is fixedly connected to the end of the connecting rod 16 located outside the sliding groove 15. On the one hand, the convex block 17 is used to increase the contact area between the user and the connecting rod 16, facilitating pulling of the connecting rod 16. On the other hand, the convex block 17 can prevent the connecting rod 16 and the clamping block 12 from falling out of the sliding groove 15, playing a limiting role.

[0035] The receiving piece 10 and the clamping block 12 play a clamping and limiting role on the moving block 13, thereby realizing the position fixation between the copper pipe 3 and the flange sleeve 2. At the same time, the spring 11 can exert an elastic force on the clamping block 12 to maintain its state, thereby preventing the clamping block 12 from randomly moving into the sliding groove 15, thus ensuring the clamping effect of the clamping block 12 on the moving piece block. Pull the connecting rod 16, and the connecting rod 16 will drive the clamping block 12 back into the sliding groove 15, that is, remove the restriction on the moving block 13, facilitating the separation of the moving block 13 and the receiving piece 10. At the same time, the movement of the clamping block 12 will compress the spring 11. When the pulling force on the connecting rod 16 is removed, the elastic force of the spring 11 will drive the clamping block 12 to automatically reset, which is convenient to use.

[0036] Working principle:

[0037] During use, the whole protrudes from the bottom of the lower housing 1 through the flange sleeve 2, and the inner diameter between the flange sleeve 2 and the copper pipe 3 changes, thereby reducing the amount of oil entering the refrigeration system through the copper pipe 3.

[0038] When it is necessary to clean the inside of the copper pipe 3 and the flange sleeve 2, the user pulls the bump 17. The bump 17 drives the connecting rod 16 to move. The connecting rod 16 drives the clamping block 12 to move into the inside of the sliding groove 15, thereby removing the restriction of the clamping block 12 on the moving block 13 and exposing the moving block 13 inside the placement groove 14. The user rotates the copper pipe 3, and the copper pipe 3 rotates with respect to the flange sleeve 2. Since the copper pipe 3 and the flange sleeve 2 are in threaded engagement, the copper pipe 3 and the flange sleeve 2 move relative to each other, and at the same time, the moving block 13 is driven to move out of the placement groove 14, completing the disassembly, which is convenient for cleaning between the copper pipe 3 and the flange sleeve 2. The clamping block 12 automatically resets under the action of the elastic force of the spring 11 without manual reset, reducing the operation steps.

[0039] After the cleaning is completed, the user aligns the end of the copper pipe 3 with the baffle 7 with the open end of the flange sleeve 2. The hemispherical design of the baffle 7 also facilitates the user to insert the copper pipe 3 into the flange sleeve 2. When the internal thread 5 and the external thread 4 come into contact with each other, by rotating the copper pipe 3, the external thread 4 on the copper pipe 3 cooperates with the internal thread 5, thereby driving the copper pipe 3 to move relatively. At the same time, the copper pipe 3 drives the moving block 13 to move until the moving block 13 contacts the inclined surface of the clamping block 12. Through the moving block 13, the force acts on the inclined surface, and the inclined surface decomposes the force, thereby obtaining a thrust in the same direction as the sliding groove 15, that is, pushing the clamping block 12 into the inside of the sliding groove 15. When the moving block 13 passes through the clamping block 12, the clamping block 12 resets under the action of the spring 11 to clamp the moving block, preventing the moving block 13 from separating from the receiving piece 10, playing a limiting role, that is, ensuring the limit between the copper pipe 3 and the flange sleeve 2.

Claims

1. A pipeline structure of a hermetic compressor, characterized in that: It includes a lower housing (1). One end of the lower housing (1) is penetrated by a flange sleeve (2). The flange sleeve (2) passes through one end of the lower housing (1) and protrudes from the bottom of the lower housing (1). The other end of the flange sleeve (2) is provided with a copper tube (3). One end of the copper tube (3) is provided with an external thread (4). The flange sleeve (2) is provided with an internal thread (5) at one end. The external thread (4) and the internal thread (5) are mutually adapted and in threaded engagement. A sealing member for sealing is arranged between the external thread (4) and the internal thread (5). One end of the copper tube (3) located inside the flange sleeve (2) is provided with a baffle (7). A through hole (8) for communicating with the copper tube (3) is provided on the baffle (7). A limiting member (9) for limiting the copper tube (3) is provided at one end of the flange sleeve (2) located outside the lower housing (1).

2. The pipeline structure of a fully enclosed compressor according to claim 1, characterized in that: The limiting member (9) includes a receiving piece (10), a spring (11), a locking block (12) and a moving block (13). The receiving piece (10) is sleeved on the flange sleeve (2). An annular placement groove (14) is provided at one end of the receiving piece (10). The moving block (13) is placed inside the placement groove (14), and the moving block (13) is sleeved on the copper tube (3) and fixedly connected. A sliding groove (15) is provided on the inner side of the placement groove (14). The spring (11) is arranged inside the sliding groove (15), and the locking block (12) is in sliding fit with the sliding groove (15). One end of the spring (11) is fixedly connected to one end of the locking block (12).

3. The pipeline structure of a fully enclosed compressor according to claim 2, characterized in that: A connecting rod (16) is penetrated inside the sliding groove (15). The connecting rod (16) is located in the middle of the spring (11), and one end of the connecting rod (16) passes through the bottom of the sliding groove (15) and is in sliding fit with the sliding groove (15). The other end of the connecting rod (16) is fixedly connected to the top of the locking block (12).

4. The pipeline structure of a fully enclosed compressor according to claim 3, characterized in that: A convex block (17) is provided at one end of the connecting rod (16).

5. The pipeline structure of a fully enclosed compressor according to claim 2, characterized in that: The locking block (12) is in the shape of a right trapezoid, and the inclined surface of the locking block (12) is located outside the sliding groove (15), and the inclined surface of the locking block (12) is located at the end far from the placement groove (14).

6. The pipeline structure of a fully enclosed compressor according to claim 1, characterized in that: The baffle (7) is hemispherical.

7. The pipeline structure of a fully enclosed compressor according to claim 1, characterized in that: The sealing member is raw tape.

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