Double-seal high-efficiency automobile air conditioner evaporator

Abstract

This utility model discloses a double-sealed high-efficiency automotive air conditioning evaporator, including a fixed frame. A heat exchange tube is fixedly installed inside the fixed frame, and heat exchange fins are fixedly installed on the outer surface of the heat exchange tube. A connecting joint is fixedly installed on one side of the fixed frame, and the connecting joint is in communication with the interior of the heat exchange tube. A connecting pipe is installed at the end of the connecting joint away from the fixed frame, and the connecting pipe and the connecting joint are sealed and fixedly connected. A further sealing mechanism is provided between the connecting pipe and the connecting structure, and the reinforcing sealing mechanism includes a sleeve, a fixing ring, and a bellows. This utility model adds a double-sealing structure to the connection position between the evaporator and the pipe. In the event of a leak at a connection position subjected to long-term high pressure, the refrigerant will not immediately enter the environment, thus avoiding safety hazards. Furthermore, the leak can be detected in a timely manner for inspection and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning evaporator technology, specifically a double-sealed high-efficiency automotive air conditioning evaporator. Background Technology

[0002] The evaporator in a car's air conditioning system is a core component of the refrigeration system. Its function is to cool the air inside the vehicle by absorbing heat through the evaporation of liquid refrigerant. The specific process is as follows:

[0003] Refrigerant Cycle: The compressor compresses the low-temperature, low-pressure gaseous refrigerant into a high-temperature, high-pressure gas, which is then sent to the condenser for heat dissipation and liquefaction. After passing through a throttling device (such as an expansion valve) to reduce pressure and temperature, it forms a low-temperature, low-pressure mist-like refrigerant. Evaporation and Heat Absorption: After entering the evaporator, the mist-like refrigerant rapidly boils and evaporates due to the sudden pressure drop, absorbing heat from the surrounding air and lowering the evaporator surface temperature to below 0°C. Air Cooling: The air conditioning fan blows hot air from inside the vehicle across the surface of the low-temperature evaporator. The heat is absorbed by the refrigerant, and the cooled air is then blown out from the vents, achieving a cooling effect.

[0004] In existing automotive air conditioning evaporators, the following connection methods are commonly used: welding connection, fixed clamp structure connection, or joint connection. However, the above connection methods generally only have one layer of seal, and the connection between the evaporator and the pipe is the most prone to leakage. Refrigerant leakage will indeed cause a decrease in cooling efficiency. Therefore, a double-sealed high-efficiency automotive air conditioning evaporator is needed to address this problem. Utility Model Content

[0005] The purpose of this invention is to provide a double-sealed, high-efficiency automotive air conditioning evaporator to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a double-sealed high-efficiency automotive air conditioning evaporator, comprising a fixed frame, a heat exchange tube fixedly disposed inside the fixed frame, a heat exchange fin plate fixedly disposed on the outer surface of the heat exchange tube, a connecting joint fixedly disposed on one side of the fixed frame surface, the connecting joint being in communication with the interior of the heat exchange tube, a connecting pipe disposed at the end of the connecting joint away from the fixed frame, the connecting pipe and the connecting joint being mutually sealed and fixedly connected, and a further sealing reinforcement sealing mechanism disposed between the connecting pipe and the connecting structure, the reinforcement sealing mechanism comprising a sleeve, a fixing ring, and a corrugated pipe, the sleeve being fixedly disposed on the outer surface of the fixed frame, the sleeve being sleeved on the outer surface of the connecting joint, the fixing ring being fixedly disposed on the outer surface of the connecting pipe, and the corrugated pipe being fixedly disposed on the surface of the fixing ring.

[0007] Preferably, a connecting flange is fixedly provided at one end of both the corrugated pipe and the sleeve. The corrugated pipe and the sleeve are fixed together by the connecting flange and a seal is ensured, which can further seal and isolate the connection between the connecting joint and the connecting pipe.

[0008] Preferably, the connecting flange surface is provided with mounting holes, through which it can be easily tightened and fixed by locking screws.

[0009] Preferably, an interlayer is provided between the corrugated pipe, the sleeve and the connecting joint and the connecting pipe. When the connection position of the connecting joint and the connecting pipe leaks, the high-pressure refrigerant will enter the interlayer and change the pressure change in the interlayer.

[0010] Preferably, a pressure detection device is fixedly installed on the surface of the fixing ring, and a wire is fixedly installed on the surface of the pressure detection device. The pressure detection device can detect the air pressure in the interlayer in real time and detect abnormalities in a timely manner.

[0011] Preferably, the pressure detection device is connected to the vehicle ECU control terminal via a wire. The detection data of this pressure detection device can be transmitted to the vehicle ECU control terminal, so that it can be read during each maintenance to facilitate the staff to understand the status of the air conditioning system.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model innovatively sets up a double sealing protection mechanism: when leakage occurs at the connection between the connector and the connecting pipe, the leaked refrigerant will not immediately enter the external environment, but will enter the sealing interlayer formed by the bellows and the fixing ring (this interlayer serves as a second sealing defense line), thus preventing safety hazards caused by leakage at the connection.

[0014] 2. When a leak occurs, the refrigerant accumulates, causing the interlayer pressure to rise significantly to over one atmosphere. At this point, the built-in pressure detection device will monitor the pressure anomaly in real time and transmit the signal to the vehicle's ECU control terminal via a wire. Maintenance personnel can quickly locate the leak and perform timely maintenance by reading the ECU data, thereby effectively eliminating potential safety hazards and ensuring the safe operation of the air conditioning system. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a double-sealed high-efficiency automotive air conditioning evaporator according to the present invention;

[0016] Figure 2 This is a front view of a double-sealed high-efficiency automotive air conditioning evaporator according to the present invention;

[0017] Figure 3 This is a cross-sectional view of a double-sealed high-efficiency automotive air conditioning evaporator according to the present invention;

[0018] Figure 4 This utility model relates to a double-sealed, high-efficiency automotive air conditioning evaporator. Figure 1 Enlarged view of point A in the middle;

[0019] Figure 5 This utility model relates to a double-sealed, high-efficiency automotive air conditioning evaporator. Figure 3 A magnified view of point B in the middle.

[0020] In the diagram: 1. Fixed frame; 2. Heat exchange tube; 3. Heat exchange fin plate; 4. Connecting joint; 5. Connecting pipe; 6. Sleeve; 7. Fixing ring; 8. Corrugated pipe; 9. Connecting flange; 10. Mounting hole; 11. Pressure detection device; 12. Wire; 13. Interlayer. Detailed Implementation

[0021] 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 protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution: a double-sealed high-efficiency automotive air conditioning evaporator, including a fixed frame 1, a heat exchange tube 2 fixedly disposed inside the fixed frame 1, a heat exchange fin plate 3 fixedly disposed on the outer surface of the heat exchange tube 2, a connecting joint 4 fixedly disposed on one side of the surface of the fixed frame 1, the connecting joint 4 being internally connected to the heat exchange tube 2, a connecting pipe 5 disposed at the end of the connecting joint 4 away from the fixed frame 1, the connecting pipe 5 and the connecting joint 4 being mutually sealed and fixedly connected, and a further sealing reinforcement sealing mechanism being disposed between the connecting pipe 5 and the connecting structure, the reinforcement sealing mechanism including a sleeve 6, a fixing ring 7, and a corrugated pipe 8, the sleeve 6 being fixedly disposed on the outer surface of the fixed frame 1, the sleeve 6 being sleeved on the outer surface of the connecting joint 4, the fixing ring 7 being fixedly disposed on the outer surface of the connecting pipe 5, and the corrugated pipe 8 being fixedly disposed on the surface of the fixing ring 7.

[0023] Both the corrugated pipe 8 and the sleeve 6 are fixedly provided with a connecting flange 9 at one end. The corrugated pipe 8 and the sleeve 6 are fixed together by the connecting flange 9 and the seal is ensured, so that the connection between the connecting joint 4 and the connecting pipe 5 can be further sealed and isolated.

[0024] The connecting flange 9 has mounting holes 10 on its surface, which can be easily tightened and fixed by locking screws.

[0025] A jacket 13 is provided between the corrugated pipe 8, the sleeve 6 and the connecting joint 4 and the connecting pipe 5. When the connection position of the connecting joint 4 and the connecting pipe 5 leaks, the high-pressure refrigerant will enter the jacket 13 and change the pressure change in the jacket 13.

[0026] A pressure detection device 11 is fixedly installed on the surface of the fixed ring 7, and a wire 12 is fixedly installed on the surface of the pressure detection device 11. The pressure detection device 11 can detect the air pressure in the interlayer 13 in real time and detect abnormalities in a timely manner.

[0027] The pressure detection device 11 is connected to the vehicle ECU control terminal via a wire 12. The detection data of this pressure detection device 11 can be transmitted to the vehicle ECU control terminal, so that it can be read during each maintenance to facilitate the staff to understand the status of the air conditioning system.

[0028] Working principle: The air conditioner evaporator of this device is connected to the external connecting pipe 5 through the connecting joint 4, so that it can be connected to the subsequent dryer, compressor and other structures; after the connecting joint 4 and the connecting pipe 5 are fixed, the bellows 8 is stretched so that the bellows 8 and the sleeve 6 are fixed through the connecting flange 9, thus finally completing the overall fixed connection of this device.

[0029] Subsequently, during use, the evaporator connection joint 4 and connection pipe 5 are under constant high pressure, typically requiring them to withstand a continuous pressure of approximately 2 atmospheres. Combined with the continuous vibrations generated during vehicle operation, these areas become high-risk zones for refrigerant leakage. In the event of a leak, traditional designs would allow the refrigerant to directly escape into the external environment, posing a safety hazard.

[0030] This invention innovatively employs a dual-sealing protection mechanism: when a leak occurs at the connection between the connector 4 and the connecting pipe 5, the leaked refrigerant does not immediately enter the external environment, but instead enters the sealing interlayer 13 formed by the bellows 8 and the fixing ring 7 (this interlayer 13 serves as a second line of defense). Initially, the interlayer 13 maintains a standard atmospheric pressure (1 atmosphere). After a leak occurs, the refrigerant accumulates, causing the pressure in the interlayer 13 to rise significantly to over 1 atmosphere. At this time, the built-in pressure detection device 11 monitors the pressure anomaly in real time and transmits the signal to the vehicle's ECU control terminal via the wire 12. Maintenance personnel can quickly locate the leak and perform timely maintenance by reading the ECU data, thereby effectively eliminating potential safety hazards and ensuring the safe operation of the air conditioning system.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-sealed high-efficiency automotive air conditioner evaporator comprising a stationary frame (1), characterized in that: The fixed frame (1) is fixedly provided with a heat exchange tube (2) inside. The heat exchange tube (2) is fixedly provided with a heat exchange fin plate (3) on the outer surface of the heat exchange tube (2). A connecting joint (4) is fixedly provided on one side of the surface of the fixed frame (1). The connecting joint (4) is in communication with the heat exchange tube (2). A connecting pipe (5) is provided at the end of the connecting joint (4) away from the fixed frame (1). The connecting pipe (5) and the connecting joint (4) are sealed and fixedly connected to each other. A further sealing reinforcement sealing mechanism is provided between the connecting pipe (5) and the connecting structure. The reinforcement sealing mechanism includes a sleeve (6), a fixing ring (7), and a corrugated pipe (8). The sleeve (6) is fixedly provided on the outer surface of the fixed frame (1). The sleeve (6) is sleeved on the outer surface of the connecting joint (4). A fixing ring (7) is fixedly provided on the outer surface of the connecting pipe (5). A corrugated pipe (8) is fixedly provided on the surface of the fixing ring (7).

2. A dual sealed high efficiency automotive air conditioner evaporator as set forth in claim 1 wherein: Both the corrugated pipe (8) and the sleeve (6) are fixedly provided with a connecting flange (9) at one end.

3. A dual sealed high efficiency automotive air conditioner evaporator as set forth in claim 2 wherein: The connecting flange (9) has mounting holes (10) on its surface.

4. The double-sealed high-efficiency automotive air conditioning evaporator according to claim 1, characterized in that: An interlayer (13) is provided between the corrugated pipe (8), the sleeve (6), the connecting joint (4), and the connecting pipe (5).

5. A double-sealed high-efficiency automotive air conditioning evaporator according to claim 1, characterized in that: A pressure detection device (11) is fixedly provided on the surface of the fixed ring (7), and a wire (12) is fixedly provided on the surface of the pressure detection device (11).

6. A double-sealed high-efficiency automotive air conditioning evaporator according to claim 5, characterized in that: The pressure detection device (11) is connected to the vehicle ECU control terminal via a wire (12).

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