Air conditioner copper pipe structure convenient to connect

By combining an inner ring shell, a rubber cover, a separator membrane, and a needle, the problem of cumbersome connection and poor sealing of traditional air conditioning copper pipes is solved, achieving convenient installation and efficient sealing, and improving the reliability of air conditioning connections.

CN224150354UActive Publication Date: 2026-04-21SHIJIAZHUANG LIANFEI HEATING & COOLING EQUIPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHIJIAZHUANG LIANFEI HEATING & COOLING EQUIPMENT CO LTD
Filing Date
2025-06-12
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

Traditional air conditioning copper pipe connection methods are cumbersome to operate and have poor sealing performance. Welding requires professional equipment and skilled operation, and threaded connections are difficult to guarantee a seal, which can easily lead to refrigerant leakage.

Method used

It adopts a combination structure of inner ring shell, rubber cover, separator membrane and piercing needle. The piercing needle punctures the separator membrane to allow the epoxy resin and curing agent to mix and expand. The rubber cover bulges up and fits tightly against the inner wall of the air conditioner connector. Combined with the design of the plugging ring and connecting ring, it achieves convenient installation and good sealing.

Benefits of technology

It achieves convenient installation and efficient sealing, with a large sealing surface area, good sealing performance, avoids refrigerant leakage, and simplifies installation operations.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an air conditioner red copper pipe structure convenient to connect, which relates to the technical field of air conditioner installation, and comprises a red copper pipe and an air conditioner connector, the side end of the red copper pipe is connected with a connecting plug, the outer end of the connecting plug is provided with a connecting mechanism, and the connecting mechanism comprises an inner ring shell and an outer ring shell, the inner ring shell is made of high-strength engineering plastic or sheet metal, the inner ring shell is connected to the outer end of the connecting plug in a sleeving mode, the inner ring shell and the connecting plug are connected through an adhesive, the rubber cover is elastic, and the two ends of the rubber cover are connected with the two sides of the inner ring shell. The sealing ring gasket is reasonable in design structure, when the connecting plug is inserted into the air conditioner connector, the pricking needle punctures the separating film, epoxy resin is made to be in contact with and mixed with a fixing agent to generate a cross-linking reaction, volume expansion is generated, the rubber cover is made to bulge and expand, and therefore the sealing ring gasket is tightly attached to the inner wall of the air conditioner connector. Therefore, the connecting plug can be fixedly connected in the air conditioner connector, and the connecting plug is easy and convenient to install and operate and good in sealing performance.
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Description

Technical Field

[0001] This utility model relates to the field of air conditioning installation technology, specifically an air conditioning copper pipe structure that is easy to connect. Background Technology

[0002] In air conditioning systems, copper pipes are typically used for transporting refrigerant. During air conditioning installation, copper pipes are required to connect the indoor and outdoor units of the air conditioner.

[0003] However, the current traditional copper pipe connection method for air conditioners has some problems. For example, the existing copper pipe connection usually adopts welding or threaded connection. Welding requires professional equipment and skilled operators, which is cumbersome and has high installation cost. Although threaded connection is relatively easy to install, the sealing gasket used for sealing has a small contact area with the side interface of the air conditioner connector, which makes it difficult to effectively guarantee the seal and is prone to refrigerant leakage.

[0004] To address these issues, we have developed an easy-to-connect copper tubing structure for air conditioning systems. Utility Model Content

[0005] 1) Technical problems to be solved

[0006] This utility model proposes an air conditioner copper pipe structure that is easy to connect. By cooperating with the separator in the inner ring shell, the rubber cover can be expanded, so that the sealing ring gasket is tightly fitted to the inner wall of the air conditioner connector, which solves the problem of inconvenient connection or difficulty in effectively ensuring sealing of traditional air conditioner copper pipes.

[0007] (ii) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution: a structure for an air conditioner copper pipe that is easy to connect, comprising a copper pipe and an air conditioner connector, wherein a plug is connected to the side end of the copper pipe, and a connecting mechanism is provided at the outer end of the plug, the connecting mechanism comprising:

[0009] The inner ring shell is made of high-strength engineering plastic or thin metal sheet. The inner ring shell is sleeved on the outer end of the connector and the two are connected by adhesive.

[0010] A rubber cover, which is elastic, has two ends connected to the two sides of an inner ring shell, forming a sealed chamber between them;

[0011] The separator is a sealed plastic film that is connected between the rubber cover and the inner ring shell, dividing the sealed chamber between the two into two parts, one part storing epoxy resin and the other part storing curing agent.

[0012] A sealing ring gasket, wherein the sealing ring gasket is connected to the outer end of the rubber cover;

[0013] The needle has a pointed end and a fixing ring connected to its side end, which can be fitted onto the outer end of the connector.

[0014] Furthermore, the air conditioner connector is a connector for the indoor and outdoor units of an air conditioner, and the side end of the plug is a guide cone surface, with the plug inserted into the air conditioner connector.

[0015] Furthermore, the inner ring shell has several circular holes on its side, into which the needle can be inserted and interact with the diaphragm.

[0016] Furthermore, the connecting mechanism also includes a plugging ring, which is made of rubber and is connected inside the inner ring shell, located at the side end of the circular hole.

[0017] Furthermore, the sealing ring gasket is a rubber sealing ring, and its outer end surface is provided with anti-slip textured grooves. The sealing ring gasket is connected to the inner wall of the air conditioner connector.

[0018] Furthermore, the air conditioner connector has a connecting groove inside, and the side end of the connecting groove is set as a push surface, which can be connected to the fixing ring. The outer end of the air conditioner connector has a threaded groove.

[0019] Furthermore, a retaining ring is connected to the connection point between the copper tube and the connector, and a connecting ring is slidably connected to the outer end of the copper tube, with the connecting ring threadedly connected to the outer end of the air conditioner connector.

[0020] (iii) Beneficial effects:

[0021] Compared with existing technologies, this easily connectable air conditioning copper pipe structure has the following advantages:

[0022] I. This easily connectable air conditioner copper pipe structure incorporates epoxy resin and a fixative within the inner ring shell. When the piercing needle breaks the separator membrane, the epoxy resin mixes with the fixative, undergoing a cross-linking reaction that causes volume expansion. This allows the rubber cover to bulge and expand, ensuring a tight seal between the sealing ring gasket and the inner wall of the air conditioner connector. The sealing surface is the entire sealing ring gasket, providing a larger sealing surface and better sealing effect compared to traditional side-end interface seals in air conditioner connectors. This allows for the connection and fixation of the connector within the air conditioner connector, offering not only easy installation and operation but also excellent sealing performance.

[0023] 2. This easily connectable air conditioning copper pipe structure, through the plugging ring, ensures that when the piercing needle is inserted into the round hole of the inner ring shell, it will first insert into the plugging ring. The plugging ring can seal the gap between it and the piercing needle, thereby preventing the fixative or epoxy resin from overflowing from the gap between the inner ring shell and the piercing needle. By providing a connecting ring, it can be threaded to the outer end of the air conditioning connector. When it rotates and moves, it can drive the plug into the air conditioning connector through the retaining ring, thereby facilitating installation and enhancing the fixing effect between the plug and the air conditioning connector. Attached Figure Description

[0024] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 This is a schematic diagram of the overall structure of the air conditioner copper pipe structure of this utility model that facilitates connection;

[0026] Figure 2 This is a schematic diagram of an air conditioner connector with an air conditioner copper pipe structure that facilitates connection according to this utility model;

[0027] Figure 3 This is a schematic diagram of the connector for the air conditioner copper pipe structure of this utility model, which facilitates connection.

[0028] Figure 4 This is a cross-sectional schematic diagram of the air conditioner copper pipe structure of this utility model, which is easy to connect.

[0029] Figure 5 This utility model provides an air conditioning copper pipe structure that facilitates connection. Figure 4 Schematic diagram of area A.

[0030] In the diagram: 1. Copper pipe; 2. Air conditioner connector; 3. Plug; 4. Inner ring shell; 5. Rubber cover; 6. Separator membrane; 7. Epoxy resin; 8. Curing agent; 9. Sealing ring gasket; 10. Needle; 11. Fixing ring; 12. Blocking ring; 13. Push surface; 14. Retaining ring; 15. Connecting ring. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0032] like Figure 1-5 As shown, this utility model provides a technical solution: an air conditioner copper pipe structure that is easy to connect, including a copper pipe 1 and an air conditioner connector 2. A plug 3 is connected to the side end of the copper pipe 1. The air conditioner connector 2 is the connector for the indoor unit and the outdoor unit of the air conditioner. The side end of the plug 3 is a guide cone surface. This setting can facilitate the insertion of the plug 3 into the air conditioner connector 2.

[0033] The outer end of the connector 3 is provided with a connecting mechanism, which includes: an inner ring shell 4, a rubber cover 5, a separator 6, a sealing ring gasket 9, and a needle 10. The inner ring shell 4 is made of high-strength engineering plastic or thin metal sheet to ensure its structural strength. The inner ring shell 4 is sleeved on the outer end of the connector 3, and the two are connected by adhesive to fix the inner ring shell 4. The rubber cover 5 is elastic and is connected to both sides of the inner ring shell 4, forming a sealed chamber between them. The separator 6 is a sealing plastic film that is connected between the rubber cover 5 and the inner ring shell 4, dividing the sealed chamber between them into two parts. One part stores epoxy resin 7, and the other part stores curing agent 8.

[0034] When epoxy resin 7 and curing agent 8 are mixed, a cross-linking reaction occurs, resulting in volume expansion. The cured epoxy resin 7 has good mechanical properties and chemical stability and is insoluble in water. The combination of epoxy resin 7 and curing agent 8 can be changed. For example, they can be replaced with: highly absorbent substances and hydrophobic polymers, calcium oxide and water, etc., all of which can produce an expansion effect after mixing.

[0035] The sealing ring gasket 9 is connected to the outer end of the rubber cover 5. The needle 10 can interact with the separator membrane 6. The tail end of the needle 10 is set as a pointed tip to facilitate piercing the separator membrane 6. A fixing ring 11 is connected to the side end of the needle 10. The fixing ring 11 can be sleeved on the outer end of the connector 3 to move all the needles 10 at the same time. Several round holes are opened on the side end of the inner ring shell 4. The needle 10 can be inserted into the round holes. The connection mechanism also includes a blocking ring 12. The blocking ring 12 is made of rubber and has elasticity. The blocking ring 12 is connected inside the inner ring shell 4 and is located on the side end of the round hole. The needle 10 is inserted into the blocking ring 12, and the blocking ring 12 can seal the connection gap between the two. The sealing ring gasket 9 is a rubber sealing ring. The outer end of the surface is provided with anti-slip texture grooves. The sealing ring gasket 9 is connected to the inner wall of the air conditioner connector 2. The anti-slip texture grooves are used to increase the friction between the sealing ring gasket 9 and the inner wall of the air conditioner connector 2, thereby improving the connection and fixing effect.

[0036] The air conditioner connector 2 has a connecting groove inside, and the side end of the connecting groove is set as a push surface 13. The push surface 13 can be connected to the fixing ring 11. The outer end of the air conditioner connector 2 has a threaded groove. The copper tube 1 and the plug connector 3 are connected to a retaining ring 14. The outer end of the copper tube 1 is slidably connected to a connecting ring 15. The retaining ring 14 is used to constrain the movement of the connecting ring 15. The connecting ring 15 is threadedly connected to the outer end of the air conditioner connector 2.

[0037] Working principle: During installation, first, the retaining ring 11 is fitted onto the outer end of the connector 3, and the tip of the piercing needle 10 is inserted into the round hole of the inner ring shell 4. Then, the connector 3 is inserted into the air conditioner connector 2, and the connecting ring 15 is threadedly connected to the air conditioner connector 2. The connecting ring 15 will gradually drive the connector 3 into the air conditioner connector 2 through the retaining ring 14. When the retaining ring 11 acts on the pushing surface 13 of the air conditioner connector 2, it will resist the movement of the retaining ring 11. As the connector 3 continues to move, the piercing needle 10 will gradually insert into the inner ring shell 4, pass through the blocking ring 12, and then puncture the separator 6. At this time, the epoxy resin 7 will come into contact with and mix with the curing agent 8. The two will undergo a cross-linking reaction, resulting in volume expansion. This allows the rubber cover 5 to bulge and expand, so that the sealing ring gasket 9 is tightly fitted to the inner wall of the air conditioner connector 2. When the air conditioner connector 2 is connected to the retaining ring 14, the connecting ring 15 will no longer be able to rotate, thus completing the installation.

[0038] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0039] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.

Claims

1. A convenient connection structure of air conditioner red copper pipe, comprising red copper pipe (1), air conditioner connection head (2), characterized in that: The copper tube (1) is connected to a connector (3) at one end. The connector (3) is provided with a connecting mechanism at its outer end. The connecting mechanism includes: Inner ring shell (4), the inner ring shell (4) is made of high-strength engineering plastic or metal sheet, the inner ring shell (4) is sleeved on the outer end of the plug (3), and the two are connected by adhesive; A rubber cover (5) is elastic and has two ends connected to the two sides of an inner ring shell (4), forming a sealed chamber between them. The separator (6) is a sealed plastic film that is connected between the rubber cover (5) and the inner ring shell (4) to divide the sealed chamber between the two into two parts, one part storing epoxy resin (7) and the other part storing curing agent (8). A sealing ring gasket (9) is attached to the outer end of the rubber cover (5); The needle (10) has a pointed end and a fixing ring (11) is connected to the side end of the needle (10). The fixing ring (11) can be sleeved on the outer end of the connector (3).

2. A structure of air conditioner copper pipe for easy connection according to claim 1, characterized in that: The air conditioner connector (2) is the connector for the indoor and outdoor units of the air conditioner. The side end of the plug (3) is a guide cone surface. The plug (3) is inserted into the air conditioner connector (2).

3. A convenient connecting structure of air conditioner copper pipe according to claim 1, characterized in that: The inner ring shell (4) has several round holes on its side, into which the needle (10) can be inserted and interact with the separator (6).

4. A convenient connecting structure of air conditioner copper pipe according to claim 1, characterized in that: The connecting mechanism also includes a plugging ring (12), which is made of rubber and is connected inside the inner ring shell (4), located at the side end of the round hole.

5. A convenient connecting structure of air conditioner copper pipe according to claim 1, characterized in that: The sealing ring gasket (9) is a rubber sealing ring with an anti-slip texture groove on its outer end surface. The sealing ring gasket (9) is connected to the inner wall of the air conditioner connector (2).

6. A convenient connecting structure of air conditioner copper pipe according to claim 1, characterized in that: The air conditioner connector (2) has a connecting groove inside, and the side end of the connecting groove is set as a push surface (13). The push surface (13) can be connected to the fixing ring (11). The air conditioner connector (2) has a threaded groove at its outer end.

7. A convenient connecting structure of air conditioner copper pipe according to claim 1, characterized in that: A retaining ring (14) is connected to the copper tube (1) and the plug (3). A connecting ring (15) is slidably connected to the outer end of the copper tube (1). The connecting ring (15) is threaded to the outer end of the air conditioner connector (2).