Novel electronic expansion valve body assembly

Abstract

The utility model discloses a novel electronic expansion valve body assembly which comprises a valve body, a guide seat is fixedly connected to the lower bottom wall of the valve body, a first sealing ring is fixedly connected to the side surface of the guide seat, a guide plate is fixedly connected to the upper surface of the guide seat, and a valve element sleeve is attached to the upper surface of the guide plate. The side surface of the valve element sleeve is fixedly connected with a second sealing ring, the side surface of the valve element sleeve is movably connected with a fixing sleeve, the side surface of the fixing sleeve is fixedly connected with a third sealing ring, the side surface of the valve element sleeve is provided with a stator coil, the side inner wall of the valve element sleeve is in threaded connection with a valve element rod, and the lower surface of the valve element rod is fixedly connected with a positioning spring. The upper surface of the valve element rod is fixedly connected with a supporting spring, and the end, away from the valve element rod, of the supporting spring is fixedly connected with a valve element end. Through the components, the guide seat, the guide plate, the valve core sleeve and other components can be quickly assembled on the valve body, and sealing rings are arranged at the connecting parts of all the components, so that the overall sealing performance of all the components and the electronic expansion valve is improved.

Description

Technical Field

[0001] This utility model relates to the field of expansion valve technology, and in particular to a novel electronic expansion valve body assembly. Background Technology

[0002] In refrigeration systems, the electronic expansion valve is a critical component, and its sealing performance directly affects whether refrigerant will leak, thus impacting the overall efficiency and safety of the refrigeration system. Currently, common integrated electronic expansion valve body assemblies often use a single molding or simple fixing method where the valve core sleeve, fixing sleeve, and valve body are integrally formed. The sealing structure relies on only a few sealing rings, resulting in insufficient tightness between components. This makes it difficult to meet the sealing requirements under harsh operating conditions, and refrigerant leaks frequently occur. Furthermore, because components such as the guide seat, baffle plate, and valve core sleeve inside the valve body assembly are difficult to disassemble after assembly, when the electronic expansion valve is damaged, maintenance personnel cannot easily remove internal components for maintenance and replacement. Often, the entire valve needs to be replaced, which not only wastes resources but also significantly increases operating costs and severely limits the lifespan of the electronic expansion valve. Therefore, developing an electronic expansion valve body assembly with excellent sealing performance and ease of maintenance has become an urgent problem to be solved in the industry. Utility Model Content

[0003] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide a novel electronic expansion valve body assembly. The valve core sleeve and the fixed sleeve are installed on the valve body via a threaded connection. During installation, the guide plate is compressed, causing the guide seat and the sealing ring located inside the valve body to fit tightly against the valve body, thereby improving the valve body's sealing performance. Three sets of sealing rings are provided to ensure tight connection of all components installed on the valve body, further improving the device's sealing performance and preventing refrigerant leakage. Furthermore, the guide seat, guide plate, and valve core sleeve installed inside the valve body can be quickly assembled and disassembled, allowing each component in the valve body to be removed for maintenance and replacement. This avoids the difficulty in repairing existing integrated electronic expansion valves after damage, and improves the service life of the electronic expansion valve.

[0004] This utility model also provides a valve body assembly of a novel electronic expansion valve, comprising: a valve body, a guide seat fixedly connected to the lower bottom wall of the valve body, a sealing ring one fixedly connected to the side surface of the guide seat, a guide plate fixedly connected to the upper surface of the guide seat, a valve core sleeve attached to the upper surface of the guide plate, a sealing ring two fixedly connected to the side surface of the valve core sleeve, a fixed sleeve movably connected to the side surface of the valve core sleeve, and a sealing ring three fixedly connected to the side surface of the fixed sleeve;

[0005] A stator coil is provided on the side surface of the valve core sleeve, and a valve core rod is threadedly connected to the inner side wall of the valve core sleeve. A positioning spring is fixedly connected to the lower surface of the valve core rod, and a support spring is fixedly connected to the upper surface of the valve core rod. The end of the support spring away from the valve core rod is fixedly connected to the valve core end. With these components, the guide seat, guide plate, and valve core sleeve can be quickly assembled onto the valve body. Sealing rings are provided at the connection points of each component, improving the sealing performance between each component and the overall electronic expansion valve. Furthermore, each component can be disassembled for replacement and maintenance after use, extending the service life of the expansion valve.

[0006] According to the present invention, a novel electronic expansion valve body assembly includes a positioning block fixedly connected to the side surface of the guide plate, and the side surface of the positioning block is fixedly connected to the valve body. The positioning block fixes the position of the guide plate and guide seat after insertion into the valve body, allowing the holes on the guide plate to communicate with the inlet of the valve body.

[0007] According to the present invention, in a novel electronic expansion valve body assembly, the side surface of the valve core sleeve is threadedly connected to the valve body, and the second sealing ring is located between the valve core sleeve and the valve body. The valve core sleeve can be fixed to the valve body by means of a threaded connection.

[0008] According to the present invention, in a novel electronic expansion valve body assembly, the side surface of the fixing sleeve is threadedly connected to the valve body, and a fixing ring is fixedly connected to the side surface of the fixing sleeve. The fixing sleeve can be fixed to the valve body using a threaded connection.

[0009] According to the present invention, in a novel electronic expansion valve body assembly, the lower surface of the retaining ring is fitted with the valve body, and the sealing ring three is located between the retaining ring and the valve body. The retaining ring presses the sealing ring three into the valve body, thereby enhancing the sealing effect of the sealing ring three.

[0010] According to the present invention, a novel electronic expansion valve body assembly comprises a valve core rod whose side surface is threadedly connected to a valve core sleeve, and a positioning spring whose end is furthest from the valve core rod is fixedly connected to the valve core sleeve. The stator coil drives the valve core rod to rotate, enabling the valve core rod to move the valve core end along the valve core sleeve.

[0011] According to the present invention, a novel electronic expansion valve body assembly includes a plug fixedly connected to the lower surface of the stator coil, and a support frame fixedly connected to the lower surface of the stator coil. The stator coil is fixed to the support frame by the plug.

[0012] According to the present invention, in a novel electronic expansion valve body assembly, the side surface of the insert block is fixedly connected to a support frame, and the support frame is fixedly connected to the valve body by screws. The support frame is fixed to the valve body by screws, and the stator coil is mounted on the support frame to facilitate driving the valve core rod.

[0013] Beneficial effects:

[0014] This novel electronic expansion valve body assembly allows the valve core sleeve and fixed sleeve to be installed on the valve body via a threaded connection. During installation, the guide plate is compressed, ensuring a tight fit between the guide seat, the sealing ring inside the valve body, and the valve body. This improves the valve body's sealing performance. Three sets of sealing rings further enhance the sealing performance by ensuring a tight connection between all components installed on the valve body, preventing refrigerant leakage. Furthermore, the guide seat, guide plate, and valve core sleeve installed inside the valve body can be quickly assembled and disassembled, allowing for easy removal of components for maintenance and replacement. This avoids the difficulty of repairing existing integrated electronic expansion valves after damage, thus extending the service life of the electronic expansion valve. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0016] Figure 1 This is an overall structural diagram of the valve body assembly of the novel electronic expansion valve of this utility model;

[0017] Figure 2 This is a cross-sectional view of the valve body assembly of the novel electronic expansion valve of this utility model;

[0018] Figure 3 This is a structural diagram of the fixing sleeve of the valve body assembly of the novel electronic expansion valve of this utility model;

[0019] Figure 4 This is a structural diagram of the valve core sleeve of the novel electronic expansion valve body assembly of this utility model;

[0020] Figure 5 This is a structural diagram of the guide plate and guide seat of the valve body assembly of the novel electronic expansion valve of this utility model.

[0021] Legend:

[0022] 1. Valve body; 2. Support frame; 3. Fixing ring; 4. Screw; 5. Stator coil; 6. Guide seat; 7. Sealing ring one; 8. Flow guide plate; 9. Positioning block; 10. Valve core end; 11. Support spring; 12. Sealing ring two; 13. Fixing sleeve; 14. Sealing ring three; 15. Valve core rod; 16. Insert block; 17. Positioning spring; 18. Valve core sleeve. Detailed Implementation

[0023] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0024] Reference Figure 1-5 This utility model provides a novel electronic expansion valve body assembly, comprising: a valve body 1, a guide seat 6 fixedly connected to the lower bottom wall of the valve body 1, a sealing ring 7 fixedly connected to the side surface of the guide seat 6, a guide plate 8 fixedly connected to the upper surface of the guide seat 6, a positioning block 9 fixedly connected to the side surface of the guide plate 8, the side surface of the positioning block 9 fixedly connected to the valve body 1, a valve core sleeve 18 attached to the upper surface of the guide plate 8, the side surface of the valve core sleeve 18 threadedly connected to the valve body 1, a sealing ring 12 fixedly connected to the side surface of the valve core sleeve 18, the sealing ring 12 being located between the valve core sleeve 18 and the valve body 1, a fixing sleeve 13 movably connected to the side surface of the valve core sleeve 18, the side surface of the fixing sleeve 13 threadedly connected to the valve body 1, and a sealing ring 14 fixedly connected to the side surface of the fixing sleeve 13.

[0025] Specifically, before use, the guide plate 8 and guide seat 6 are inserted into the valve body 1, and the positioning block 9 on the guide plate 8 is locked into the slot in the valve body 1 to fix the position and direction of the guide plate 8 and guide seat 6. Then, the fixing sleeve 13 is put on the outside of the valve core sleeve 18, and the valve core sleeve 18 is fixed to the valve body 1 by using the external thread of the valve core sleeve 18. During this process, the bottom of the valve core sleeve 18 is pressed against the upper part of the guide plate 8, and the guide plate 8 is squeezed, so that the sealing ring 1 7 is tightly locked into the connection between the guide seat 6 and the valve body 1. At the same time, the sealing ring 2 12 will also be tightly fitted with the valve body 1. Then, the fixing sleeve 13 is also installed into the valve body 1 and the valve core sleeve 18 and sealing ring 2 12 are squeezed in the same way. By setting three sets of sealing rings, the sealing performance of the electronic expansion valve is enhanced, and the various parts in the valve body assembly can be disassembled, which facilitates quick assembly and maintenance.

[0026] A stator coil 5 is provided on the side surface of the valve core sleeve 18. A valve core rod 15 is threadedly connected to the inner side wall of the valve core sleeve 18. The side surface of the valve core rod 15 is threadedly connected to the valve core sleeve 18. A positioning spring 17 is fixedly connected to the lower surface of the valve core rod 15. The end of the positioning spring 17 away from the valve core rod 15 is fixedly connected to the valve core sleeve 18. A support spring 11 is fixedly connected to the upper surface of the valve core rod 15. A valve core end 10 is fixedly connected to the end of the support spring 11 away from the valve core rod 15.

[0027] Specifically, during use, the stator coil 5 is activated to allow the valve core rod 15 to rotate inside the valve core sleeve 18. The threads on the valve core rod 15 allow it to move vertically along the valve core sleeve 18. The valve core rod 15 and the support spring 11 drive the valve core end 10 to rise, opening the guide seat 6 and allowing the refrigerant entering the guide plate 8 to flow out from the opening of the guide seat 6. During use, the positioning spring 17 is stretched to keep the movement of the valve core rod 15 stable. When reset is required, the support spring 11 drives the valve core rod 15 to push the valve core end 10 back to its original position, and provides a certain buffering effect for the valve core end 10 when the refrigerant flows through the guide plate 8.

[0028] A fixing ring 3 is fixedly connected to the side surface of the fixing sleeve 13. The lower surface of the fixing ring 3 is in contact with the valve body 1. The sealing ring 3 14 is located between the fixing ring 3 and the valve body 1. A plug 16 is fixedly connected to the lower surface of the stator coil 5. The side surface of the plug 16 is fixedly connected to the support frame 2. The support frame 2 is fixedly connected to the lower surface of the stator coil 5. The support frame 2 is fixedly connected to the valve body 1 by screws 4.

[0029] Specifically, a fixing ring 3 is provided on the fixing sleeve 13, and a sealing ring 3 14 is located below the fixing ring 3. When the fixing sleeve 13 is fixed to the valve body 1 and tightened, the fixing ring 3 will squeeze the sealing ring 3 14 from above, making the sealing ring 3 14 fit tightly with the valve body 1 and improving the sealing effect of the sealing ring 3 14. At the bottom of the stator coil 5, there is a plug 16 that can be inserted into the insertion hole in the support frame 2. When installing the stator coil 5, the stator coil 5 is clamped onto the support frame 2 by the plug 16, and then the support frame 2 is fixed to the valve body 1 by screws 4, thereby fixing the position of the stator coil 5 so that it can control the rotation of the valve core rod 15.

[0030] Working principle: Before use, the guide seat 6, valve core sleeve 18 and fixed sleeve 13 can be installed into the valve body 1 in sequence. The valve core sleeve 18 and the fixed sleeve 13 are connected by threads to press the guide seat 6 and the valve core sleeve 18 together, and the sealing ring 1 7 and the sealing ring 2 12 can fit tightly with the valve body 1. After installation, the position of the stator coil 5 is fixed by the support frame 2, and the stator coil 5 is started to drive the valve core rod 15 to move, so that the valve core end 10 is separated from the guide seat 6, so that the refrigerant can flow into the guide plate 8 and be discharged from the guide seat 6. After use, the valve body assembly can be quickly disassembled and its parts replaced and repaired.

[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A novel electronic expansion valve body assembly, characterized in that, include: A valve body (1) is fixedly connected to a guide seat (6) on its lower bottom wall. A sealing ring (7) is fixedly connected to the side surface of the guide seat (6). A guide plate (8) is fixedly connected to the upper surface of the guide seat (6). A valve core sleeve (18) is attached to the upper surface of the guide plate (8). A sealing ring (12) is fixedly connected to the side surface of the valve core sleeve (18). A fixed sleeve (13) is movably connected to the side surface of the valve core sleeve (18). A sealing ring (14) is fixedly connected to the side surface of the fixed sleeve (13). The valve core sleeve (18) has a stator coil (5) on its side surface. The valve core sleeve (18) has a valve core rod (15) threadedly connected to its inner side wall. The valve core rod (15) has a positioning spring (17) fixedly connected to its lower surface. The valve core rod (15) has a support spring (11) fixedly connected to its upper surface. The end of the support spring (11) away from the valve core rod (15) is fixedly connected to a valve core end (10).

2. The novel electronic expansion valve body assembly according to claim 1, characterized in that, The side surface of the guide plate (8) is fixedly connected to a positioning block (9), and the side surface of the positioning block (9) is fixedly connected to the valve body (1).

3. The novel electronic expansion valve body assembly according to claim 1, characterized in that, The side surface of the valve core sleeve (18) is threaded to the valve body (1), and the second sealing ring (12) is located between the valve core sleeve (18) and the valve body (1).

4. The novel electronic expansion valve body assembly according to claim 1, characterized in that, The side surface of the fixed sleeve (13) is threadedly connected to the valve body (1), and a fixed ring (3) is fixedly connected to the side surface of the fixed sleeve (13).

5. A novel electronic expansion valve body assembly according to claim 4, characterized in that, The lower surface of the fixing ring (3) is in contact with the valve body (1), and the sealing ring three (14) is located between the fixing ring (3) and the valve body (1).

6. The novel electronic expansion valve body assembly according to claim 1, characterized in that, The side surface of the valve core rod (15) is threadedly connected to the valve core sleeve (18), and the end of the positioning spring (17) away from the valve core rod (15) is fixedly connected to the valve core sleeve (18).

7. The novel electronic expansion valve body assembly according to claim 1, characterized in that, A plug (16) is fixedly connected to the lower surface of the stator coil (5), and a support frame (2) is fixedly connected to the lower surface of the stator coil (5).

8. A novel electronic expansion valve body assembly according to claim 7, characterized in that, The side surface of the insert (16) is fixedly connected to the support frame (2), and the support frame (2) is fixedly connected to the valve body (1) by screws (4).

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