Aluminum connector structure for evaporator

By designing an aluminum joint structure and connection device, the high cost problem caused by the irreversible fixing of the evaporator return pipe joint is solved, achieving convenient maintenance and low-cost sealing connection.

CN224151215UActive Publication Date: 2026-04-21NINGBO SHUNSHI ELECTRIC CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO SHUNSHI ELECTRIC CO LTD
Filing Date
2025-05-15
Publication Date
2026-04-21

AI Technical Summary

Technical Problem

The existing evaporator return gas pipe joint is fixed by welding copper pipe to aluminum pipe, which requires destructive disassembly during maintenance and repair, increasing costs.

Method used

It adopts an aluminum joint structure, and uses connecting devices and fixing plates to be connected by bolts to achieve reversible fixing. Combined with plastic parts and rubber protective rings, it improves sealing performance and convenience.

Benefits of technology

It achieves reversible fixing of the return air pipe joint, which facilitates inspection and maintenance, reduces operating costs, and improves sealing and temperature insulation effects.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an aluminum connector structure for an evaporator, which relates to the technical field of evaporators and comprises an air return pipe, connector bodies are respectively arranged at two ends of the air return pipe, and connecting devices are arranged at the positions of the connector bodies. The connecting device connects and fixes a connector body of the air return pipe and a corresponding part through a connector and fixing plates, the connecting device comprises a mounting frame mounted on the arc surface of the air return pipe, and the fixing plates are rotationally arranged on the peripheral arc surfaces of the mounting frame correspondingly. The fixing plate is connected with a connector fixedly installed on the surface of the evaporator, installation grooves are formed in the surfaces of the periphery of the connector, when the connector position of the air return pipe is assembled and used, a reversible fixing mode can be used for facilitating overhaul and maintenance of follow-up equipment assemblies, and due to the fact that most parts are plastic parts, the air return pipe can be conveniently assembled and used. The use cost is reduced as much as possible.
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Description

Technical Field

[0001] This utility model relates to the field of evaporator technology, and in particular to an aluminum connector structure for evaporators. Background Technology

[0002] The evaporator's return pipe (also called the return gas pipe) is an important component of the refrigeration system. Its main function is to guide the gaseous refrigerant (usually a low-pressure, low-temperature gas) that has evaporated in the evaporator back to the compressor to complete the refrigeration cycle. The return pipe ensures the normal operation of the system by delivering the refrigerant gas to the compressor.

[0003] The two ends of the return gas pipe are connected to the evaporator and compressor respectively to fix the return gas pipe. However, in actual use, it has been found that the return gas pipe is usually fixed by welding copper pipe to copper pipe or copper pipe to aluminum pipe. However, the welding method is irreversible. When inspecting and maintaining the device components, destructive disassembly is required. In addition, the use of copper and aluminum metals together leads to a large cost, which increases the operating cost of the evaporator. Utility Model Content

[0004] The technical problem this utility model aims to solve is that the joint position of the general return gas pipe is fixed by welding copper pipe to copper pipe or copper pipe to aluminum pipe. However, the welding fixing method is irreversible. When inspecting and maintaining the device components, destructive disassembly is required. In addition, the use of copper and aluminum metals together leads to a large cost, which increases the operating cost of the evaporator.

[0005] The technical solution adopted by this utility model to solve its technical problem is: an aluminum joint structure for an evaporator, including a return gas pipe, with a joint body at each end of the return gas pipe, and a connecting device at the position of the joint body, wherein the connecting device connects and fixes the joint body of the return gas pipe to the corresponding component through a connector and a fixing plate.

[0006] The effect achieved by the above components is as follows: when installing and fixing the connector body of the return gas pipe to the interface of the evaporator and the compressor, first contact the connector body with the interface, and then operate the connecting device on the surface of the return gas pipe to fix the connector position.

[0007] Preferably, the connecting device includes a mounting bracket installed on the arc surface of the return gas pipe, wherein a fixing plate is rotatably provided on the arc surface of the mounting bracket, the fixing plate is connected to a connector fixedly installed on the surface of the evaporator, wherein an installation groove is provided on the four sides of the connector, the fixing plate is inserted into the inner wall of the installation groove, the fixing plate and the installation groove are fixed by bolts, and a washer is provided on the arc surface of the bolt.

[0008] The effects achieved by the above components are as follows: the connection position of the return air pipe can be fixed in a reversible manner during assembly and use, which facilitates the inspection and maintenance of subsequent equipment components. Also, by using most of the components as plastic parts, the cost of use is reduced as much as possible.

[0009] Preferably, the connecting device further includes a reinforcing ring installed on the inner wall of the connector, wherein the reinforcing ring improves the sealing performance between the connector body and the evaporator.

[0010] The effect achieved by the above components is that, through the reinforcement ring made of aluminum foil, the connection position between the connector body and the evaporator interface can better ensure the heat preservation effect, prevent the temperature loss of the airflow, and improve the performance of the connection device.

[0011] Preferably, the connecting device further includes a protective ring installed on the inner wall of the connector, wherein the protective ring improves the installation effect of the connector body.

[0012] The effect achieved by the above components is that the rubber protective ring prevents gaps from forming between the connector and the return gas pipe, thus ensuring stable gas delivery.

[0013] Preferably, the arc surface of the mounting bracket is fitted with torsion springs on both sides of the fixing plate, wherein the two ends of the torsion springs are connected to the fixing plate and the mounting bracket respectively.

[0014] The effect achieved by the above components is as follows: by setting the torsion spring, when the rotating bolt separates the fixing plate from the mounting groove, the fixing plate will rotate under the torsional force of the torsion spring, thus facilitating separation and improving the ease of use of the fixing plate.

[0015] Preferably, a protective device is provided on the surface of the return gas pipe at the location of the connecting device. The protective device includes a protective cover fitted on the arc surface of the return gas pipe. Two mounting blocks are fixedly connected to the arc surface of the protective cover, and the two mounting blocks are installed and fixed to the evaporator by screws.

[0016] The effect achieved by the above-mentioned components is that when the connecting device is used to connect and install the return air pipe, it can protect the connection position and prevent it from coming into contact with or colliding with other components during use, which could damage the device components and thus ensure the normal use of the return air pipe.

[0017] Preferably, the protective device further includes a retaining ring installed on one side of the protective cover, wherein the retaining ring enhances the assembly stability of the protective cover.

[0018] The effect achieved by the above components is that, by setting the fixing ring with sponge material, the fixing ring can be more stable when it is attached to the surface of the evaporator, and it is not easy to shake, thus making it easier to install and fix the protective cover with screws.

[0019] Preferably, the protective device further includes an operating block mounted on the surface of the screw, wherein the operating block assists in the rotation of the screw.

[0020] The effect achieved by the above components is that, through the setting of the operating block, the screw can be rotated and the protective cover can be disassembled and installed more conveniently and quickly, thereby providing more convenient protection for the main body of the return air pipe connector.

[0021] The beneficial effects of this utility model are:

[0022] The connection position of the return air pipe of this utility model can be fixed in a reversible manner during assembly and use, which facilitates the inspection and maintenance of subsequent equipment components. Furthermore, the use of plastic parts for most components minimizes the cost of use. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a schematic diagram of the connecting device of this utility model;

[0026] Figure 3 This is a utility model Figure 2 A schematic diagram of the side structure;

[0027] Figure 4 This is a schematic diagram of the structure of the protective device of this utility model.

[0028] Legend: 1. Return air pipe; 2. Connector body; 3. Connecting device; 31. Connector head; 32. Mounting groove; 33. Mounting bracket; 34. Fixing plate; 35. Bolt; 36. Torsion spring; 37. Washer; 38. Reinforcing ring; 39. Protective ring; 4. Protective device; 41. Protective cover; 42. Mounting block; 43. Screw; 44. Retaining ring; 45. Operating block. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0031] Figure 1 and Figure 2 The aluminum connector structure for an evaporator shown includes a return pipe 1, with connector bodies 2 at both ends of the return pipe 1. A connecting device 3 is provided at the position of the connector body 2. The connecting device 3 connects and fixes the connector body 2 of the return pipe 1 to the corresponding components through a connector head 31 and a fixing plate 34. A protective device 4 is provided on the surface of the return pipe 1 at the position of the connecting device 3.

[0032] Figure 1 , Figure 2 and Figure 3 The connecting device 3 shown includes a mounting bracket 33 installed on the arc surface of the return pipe 1. Fixing plates 34 are rotatably mounted on the arc surface of the mounting bracket 33. The fixing plates 34 are connected to a connector 31 fixedly mounted on the surface of the evaporator. The connector 31 has mounting grooves 32 on its four sides. The fixing plates 34 are inserted into the inner walls of the mounting grooves 32. The fixing plates 34 and mounting grooves 32 are fixed together by bolts 35, and washers 37 are fitted on the arc surface of the bolts 35. When installing and fixing the connector body 2 of the return pipe 1 to the interface of the evaporator and compressor, first connect the connector body 2 to the interface... Make contact so that the connector body 2 is inserted into the inner wall of the connector 31 fixed at the interface position. Then rotate the fixing plate 34 on the surrounding surface of the mounting bracket 33 until the fixing plate 34 is snapped into the inner wall of the mounting groove 32 on the surface of the connector 31. Then, the bolt 35 passes through the surface of the fixing plate 34 so that the bolt 35 is threadedly connected to the inner wall of the mounting groove 32, so that the connection between the fixing plate 34 and the mounting groove 32 is stable. At this time, the connector position of the return air pipe 1 can be fixed in a reversible way during assembly and use, which facilitates the inspection and maintenance of subsequent equipment components. Also, by using most of the parts as plastic parts, the cost of use is reduced as much as possible.

[0033] Figure 1 , Figure 2 and Figure 3The connecting device 3 also includes a reinforcing ring 38 installed on the inner wall of the connector 31. The reinforcing ring 38 improves the sealing between the connector body 2 and the evaporator. The aluminum foil reinforcing ring 38 ensures better temperature insulation at the connection point between the connector body 2 and the evaporator interface, preventing heat loss from the airflow and improving the overall performance of the connecting device 3. The connecting device 3 also includes a protective ring 39 installed on the inner wall of the connector 31. The protective ring 39 improves the installation effect of the connector body 2. The protective ring 39 is designed to prevent gaps from forming between the connector 31 and the return pipe 1, thus ensuring stable gas delivery. The arc surface of the mounting bracket 33 is fitted with torsion springs 36 on both sides of the fixing plate 34. The two ends of the torsion springs 36 are connected to the fixing plate 34 and the mounting bracket 33, respectively. With the torsion springs 36, when the rotating bolt 35 separates the fixing plate 34 from the mounting groove 32, the fixing plate 34 will rotate under the torsional force of the torsion springs 36, thus facilitating separation and improving the ease of use of the fixing plate 34.

[0034] Figure 1 and Figure 4 The protective device 4 shown includes a protective cover 41 fitted onto the arc surface of the return gas pipe 1. Two mounting blocks 42 are fixedly connected to the arc surface of the protective cover 41. The two mounting blocks 42 are installed and fixed to the evaporator by screws 43. After the connector body 2 of the return gas pipe 1 is installed and fixed to the interface of the evaporator by the connecting device 3, the protective cover 41 on the arc surface of the return gas pipe 1 is slid to make the protective cover 41 contact the surface of the evaporator. Then, the screws 43 are passed through the surface of the mounting blocks 42 fixedly connected to the surface of the protective cover 41, so that the screws 43 are threaded to the surface of the evaporator, thus fixing the position of the protective cover 41. At this time, when the connecting device 3 connects and installs the return gas pipe 1, it can protect the connection position and prevent it from contacting or colliding with other components during use, which would cause damage to the device components, thereby ensuring the normal use of the return gas pipe 1.

[0035] Figure 1 and Figure 4 The protective device 4 shown also includes a fixing ring 44 installed on one side of the protective cover 41. The fixing ring 44 enhances the assembly stability of the protective cover 41. The fixing ring 44 is made of sponge material, which makes it more stable when it is attached to the surface of the evaporator and less prone to shaking. This makes it easier for the screw 43 to install and fix the protective cover 41. The protective device 4 also includes an operating block 45 installed on the surface of the screw 43. The operating block 45 assists in the rotation of the screw 43. The operating block 45 makes it easier and faster to rotate the screw 43 and disassemble and install the protective cover 41. This makes it easier to protect the connector body 2 of the return pipe 1.

[0036] Working principle: When installing and fixing the connector body 2 of the return gas pipe 1 to the interface of the evaporator and compressor, firstly, the connector body 2 is brought into contact with the interface, so that the connector body 2 is inserted into the inner wall of the connector 31 at the interface position. Then, the fixing plate 34 on the surrounding surface of the mounting bracket 33 is rotated until the fixing plate 34 is inserted into the inner wall of the mounting groove 32 on the surface of the connector 31. Then, the bolt 35 is passed through the surface of the fixing plate 34, so that the bolt 35 is threadedly connected to the inner wall of the mounting groove 32, so that the connection between the fixing plate 34 and the mounting groove 32 is stable. At this time, the connector position of the return gas pipe 1 can be fixed in a reversible manner during assembly and use, which facilitates the subsequent inspection and maintenance of equipment components. Also, by using most of the parts as plastic parts, the cost of use is reduced as much as possible.

[0037] After the connector body 2 of the return gas pipe 1 is installed and fixed to the interface of the evaporator through the connecting device 3, the protective cover 41 on the arc surface of the return gas pipe 1 is slid to make the protective cover 41 contact the surface of the evaporator. Then, the screw 43 is passed through the surface of the mounting block 42 that is fixedly connected to the surface of the protective cover 41, so that the screw 43 is threaded to the surface of the evaporator, thus fixing the position of the protective cover 41. At this time, when the connecting device 3 connects and installs the return gas pipe 1, it can protect the connection position and prevent it from contacting or colliding with other components during use, which would cause damage to the device components, thereby ensuring the normal use of the return gas pipe 1.

[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An aluminium joint structure for an evaporator comprising a return pipe (1), characterised in that: The return air pipe (1) is provided with connector bodies (2) at both ends. A connecting device (3) is provided at the position of the connector body (2). The connecting device (3) connects and fixes the connector body (2) of the return air pipe (1) to the corresponding components through the connector (31) and the fixing plate (34).

2. An aluminum joint structure for an evaporator according to claim 1, characterized by: The connecting device (3) includes a mounting bracket (33) installed on the arc surface of the return pipe (1), wherein a fixing plate (34) is rotatably provided on the arc surface of the mounting bracket (33), the fixing plate (34) is connected to the connector (31) fixedly installed on the surface of the evaporator, wherein the four sides of the connector (31) are respectively provided with mounting grooves (32), the fixing plate (34) is inserted into the inner wall of the mounting groove (32), the fixing plate (34) and the mounting groove (32) are fixed by bolts (35), and a washer (37) is sleeved on the arc surface of the bolt (35).

3. An aluminium joint structure for an evaporator as claimed in claim 2, characterized in that: The connecting device (3) also includes a reinforcing ring (38) installed on the inner wall of the connector (31), wherein the reinforcing ring (38) improves the sealing between the connector body (2) and the evaporator.

4. An aluminum joint structure for an evaporator according to claim 2, characterized by: The connecting device (3) also includes a protective ring (39) installed on the inner wall of the connector (31), wherein the protective ring (39) improves the installation effect of the connector body (2).

5. An aluminum joint structure for an evaporator according to claim 2, characterized by: The arc surface of the mounting bracket (33) is provided with torsion springs (36) on both sides of the fixing plate (34), wherein the two ends of the torsion springs (36) are connected to the fixing plate (34) and the mounting bracket (33) respectively.

6. An aluminum fitting structure for an evaporator according to claim 1, characterized in that: The surface of the return pipe (1) is provided with a protective device (4) at the position of the connecting device (3). The protective device (4) includes a protective cover (41) sleeved on the arc surface of the return pipe (1). Two mounting blocks (42) are fixedly connected to the arc surface of the protective cover (41). The two mounting blocks (42) are installed and fixed to the evaporator by screws (43).

7. An aluminium joint structure for an evaporator as claimed in claim 6, characterized in that: The protective device (4) also includes a fixing ring (44) installed on one side of the protective cover (41), wherein the fixing ring (44) enhances the assembly stability of the protective cover (41).

8. An aluminum joint structure for an evaporator according to claim 6, characterized by: The protective device (4) also includes an operating block (45) mounted on the surface of the screw (43), wherein the operating block (45) assists in the rotation of the screw (43).