Cooling rubber pipe of automobile air conditioner

Abstract

The utility model provides a cooling rubber pipe for an automobile air conditioner, which relates to the technical field of cooling rubber pipes and comprises a cooling pipe body with a multi-layer composite structure, the corrosion of refrigerant of the automobile air conditioner can be effectively resisted through a fluororubber inner layer, the corrosion resistance is improved, the service life of the rubber pipe is greatly prolonged, and the service life of the rubber pipe is prolonged. The high-strength steel wire woven mesh and the aramid fiber composite reinforcing layer enable the rubber tube to bear higher pressure, the rubber tube is effectively prevented from bulging and bursting in a high-pressure environment, the reinforcing sleeve made of aramid fiber reinforced rubber and the optimized connecting structure enable the reliability of the rubber tube in a vibration environment to be remarkably improved, and the service life of the rubber tube is prolonged. Compared with a traditional rubber pipe, the rubber pipe has the advantages that the anti-vibration fatigue life is prolonged, the problems of connector loosening and refrigerant leakage caused by vibration are reduced, heat generated in the rubber pipe can be quickly dissipated out through the graphene modified outer layer material, the working temperature of the rubber pipe is reduced, and the stability and durability of the rubber pipe in a high-temperature environment are improved.

Description

Technical Field

[0001] This utility model relates to the field of cooling hose technology, and in particular to an automotive air conditioning cooling hose. Background Technology

[0002] As a key component for refrigerant transmission in automotive air conditioning systems, automotive air conditioning cooling hoses are subjected to high temperatures, high pressures, and complex chemical media environments for extended periods.

[0003] However, existing automotive air conditioning cooling hoses have many problems. They have poor corrosion resistance, easily aging and cracking under refrigerant erosion, leading to a shortened service life. Their pressure resistance is insufficient, making them unable to withstand the high pressure generated by the air conditioning system during operation, easily causing bulging or even bursting. Furthermore, their vibration fatigue resistance is poor; under the continuous vibration of the vehicle during driving, the hose connections are prone to loosening, causing refrigerant leakage, affecting the normal operation of the automotive air conditioning system, reducing its cooling effect, and potentially leading to vehicle malfunctions and increased maintenance costs. Therefore, a new type of automotive air conditioning cooling hose is needed. Utility Model Content

[0004] The purpose of this invention is to provide an automotive air conditioning cooling hose that solves the problems of easy corrosion, poor pressure resistance, and poor vibration fatigue resistance in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automotive air conditioning cooling hose, comprising a multi-layer composite cooling hose body, with connectors at both ends of the cooling hose body serving as butt joints, the cooling hose body comprising an inner layer, a reinforcing layer and an outer layer, the reinforcing layer being disposed between the inner layer and the outer layer, and the inner layer being bonded to the inner wall of the reinforcing layer.

[0006] Preferably, the inner layer is made of fluororubber and has a thickness of 2-3 mm.

[0007] Preferably, the reinforcing layer is composed of a high-strength steel wire woven mesh and aramid fiber, with a thickness of 1.5-2.5 mm.

[0008] Preferably, the outer layer is made of EPDM rubber and modified with nano-sized titanium dioxide and graphene, with a thickness of 2-3 mm.

[0009] Preferably, the outer wall of the connector is provided with a sealing ring that fits against the inner wall of the cooling pipe to provide a sealing effect, and the outer wall of the connector is also provided with a reinforcing sleeve that is reinforced to connect with the cooling pipe.

[0010] Preferably, the reinforcing sleeve is made of fiber-reinforced rubber with a thickness of 1-2 mm, and the direction of the groove on the outer wall of the reinforcing sleeve is the same as the axial direction of the cooling pipe.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The fluororubber inner layer effectively resists the corrosion of automotive air conditioning refrigerants, improving corrosion resistance and significantly extending the service life of the hose. The high-strength steel wire braided mesh and aramid fiber composite reinforcement layer enable the hose to withstand higher pressures, effectively preventing bulging and bursting under high-pressure environments. The reinforcing sleeve made of aramid fiber reinforced rubber and the optimized connection structure significantly improve the reliability of the hose in vibration environments, extending its vibration fatigue life compared to traditional hoses and reducing joint loosening and refrigerant leakage caused by vibration. The graphene-modified outer layer material can quickly dissipate the heat generated inside the hose, reducing the hose's operating temperature and improving its stability and durability in high-temperature environments. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the product of this utility model;

[0014] Figure 2 This is a schematic diagram of the connector structure of the product of this utility model;

[0015] Figure 3 This is a schematic diagram of the overall front structure of the product of this utility model;

[0016] Figure 4 This is an enlarged structural diagram of section A of the product of this utility model.

[0017] In the diagram: 1. Cooling pipe body; 101. Inner layer; 102. Reinforcing layer; 103. Outer layer; 2. Connector; 3. Sealing ring; 4. Reinforcing sleeve; 5. Corrugated structure. Detailed Implementation

[0018] 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.

[0019] This utility model relates to an automotive air conditioning cooling hose, such as... Figure 1-4 As shown, the cooling pipe body 1 includes a multi-layer composite structure. The cooling pipe body 1 has connectors 2 at both ends. The outer wall of the connector 2 is provided with a sealing ring 3, which plays a sealing role. The outer wall of the connector 2 is also provided with a reinforcing sleeve 4 that fits into the cooling pipe body 1. The direction of the groove on the outer wall of the reinforcing sleeve 4 is the same as the axial direction of the cooling pipe body 1.

[0020] Among them, such as Figure 2 As shown, the sealing ring 3 is made of polytetrafluoroethylene, which has an extremely low coefficient of friction and good chemical stability, ensuring the sealing performance between the hose and the connector and preventing refrigerant leakage. The outer surface of the connector 2 is knurled to increase the friction with the connecting parts (not shown in the figure) and improve the stability of the connection.

[0021] Among them, such as Figure 2 As shown, the thickness of the reinforcing sleeve 4 is 1-2mm. The reinforcing sleeve 4 is made of fiber-reinforced rubber. The fiber direction in the fiber-reinforced rubber is distributed at a certain angle with the axial and circumferential directions of the hose. This can effectively disperse the stress at the joint, improve the firmness of the connection between the joint 2 and the cooling pipe body 1, and enhance the reliability of the hose in a vibration environment.

[0022] Among them, such as Figure 4 As shown, the cooling pipe body 1 includes an inner layer 101, a reinforcing layer 102 is attached to the outer wall of the inner layer 101, and an outer layer 103 is attached to the outer wall of the reinforcing layer 102. The reinforcing layer 102 is located between the inner layer 101 and the outer layer 103. The inner layer 101 is made of fluororubber with a thickness of 2-3mm, which has excellent chemical corrosion resistance and can effectively resist the corrosion of automotive air conditioning refrigerant. Fluororubber needs to play a role in blocking refrigerant. If the thickness is too thin, the blocking effect will be greatly reduced, and refrigerant leakage will easily occur; if the thickness is too thick, it will increase the cost and may also affect the flexibility of the hose. The reinforcing layer 102 is made of high-strength steel wire braided mesh and aramid fiber composite, with a thickness of 1.5-2.5mm. The high-strength steel wire braided mesh provides strong pressure resistance and can withstand the high pressure generated by the air conditioning system during operation, preventing the hose from bulging and bursting. Aramid fibers possess high strength, high modulus, and excellent fatigue resistance. Working synergistically with the steel wire braided mesh, they enhance the overall strength and vibration fatigue resistance of the hose. The outer layer, 103, is made of EPDM rubber modified with nano-sized titanium dioxide and graphene, with a thickness of 2-3 mm. EPDM rubber itself has excellent weather resistance, ozone resistance, and water resistance, protecting the hose from external environmental factors. The addition of nano-sized titanium dioxide improves the material's UV resistance, preventing the hose from aging due to prolonged exposure to sunlight. Graphene possesses excellent mechanical and thermal conductivity properties, enhancing the material's strength and helping to quickly dissipate heat generated inside the hose, reducing its operating temperature.

[0023] Furthermore, the outer wall of the cooling pipe body 1 is also provided with a corrugated structure 5. The corrugated structure 5 is evenly distributed on the outer wall of the cooling pipe body 1. The corrugated structure 5 gives the hose a certain degree of extensibility, so that it can better adapt to the positional changes and small displacements caused by engine vibration, vehicle body bumps, etc. during vehicle operation. When the vehicle vibrates during driving, it can absorb some vibration energy through its own elastic deformation.

[0024] 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.

[0025] 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. An automotive air conditioning cooling hose characterized by: The application discloses a cooling pipe body (1) comprising a multilayer composite structure, both ends of the cooling pipe body (1) are provided with joints (2) playing a butt joint role, the cooling pipe body (1) comprises an inner layer (101), a reinforcing layer (102) and an outer layer (103), the reinforcing layer (102) is arranged between the inner layer (101) and the outer layer (103), and the inner layer (101) is attached to the inner wall of the reinforcing layer (102).

2. The automobile air conditioning cooling rubber tube according to claim 1, characterized by: The inner layer (101) is made of fluorine rubber and has a thickness of 2-3 mm.

3. The automobile air conditioning cooling rubber tube according to claim 1, characterized in that: The reinforcing layer (102) is composed of a high-strength steel wire woven net and aramid fiber and has a thickness of 1.5-2.5 mm.

4. The automobile air conditioning cooling rubber tube according to claim 1, characterized by: The outer layer (103) is made of ethylene-propylene-diene rubber and is modified by adding nanoscale titanium dioxide and graphene and has a thickness of 2-3 mm.

5. The automobile air conditioning cooling rubber tube according to claim 1, characterized by: The outer wall of the joint (2) is provided with a sealing ring (3) attached to the inner wall of the cooling pipe body (1) to play a sealing role, and the outer wall of the joint (2) is further provided with a reinforcing sleeve (4) for strengthening connection with the cooling pipe body (1).

6. The automobile air conditioning cooling rubber tube according to claim 5, characterized in that: The reinforcing sleeve (4) is made of fiber reinforced rubber and has a thickness of 1-2 mm, and the outer wall of the reinforcing sleeve (4) is provided with grooves in the same direction as the axial direction of the cooling pipe body (1).

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