Coaxial heat exchange tube assembly of automobile air conditioner

Abstract

The utility model discloses a coaxial heat exchange tube assembly of an automobile air conditioner, which comprises a low-pressure heat exchange tube, and a low-pressure inlet tube and a low-pressure outlet tube are respectively arranged at the inlet end and the outlet end of the low-pressure heat exchange tube; a high-pressure input pipe and a high-pressure output pipe are arranged at the inlet end and the outlet end of the high-pressure heat exchange pipe respectively; the high-pressure heat exchange tube is spirally distributed along the outer surface of the low-pressure heat exchange tube, the outer side of the high-pressure heat exchange tube is coated with a protective sleeve, and the protective sleeve is installed and positioned through a positioning mechanism. The heat exchange efficiency between the low-pressure heat exchange pipe and the high-pressure heat exchange pipe can be improved, the installation stability of the heat exchange pipe assembly can be improved, the phenomenon that the heat exchange pipe assembly falls off due to long-time use of an automobile air conditioner is avoided, and the service life of the heat exchange pipe assembly is prolonged.

Description

Technical Field

[0001] This utility model relates to a coaxial heat exchanger tube assembly for automotive air conditioning. Background Technology

[0002] With the increasing prevalence of automobiles, the requirements for energy conservation and environmental protection in vehicles are becoming more stringent, making automotive air conditioning an essential component of every car. An automotive air conditioning system mainly includes a compressor, condenser, evaporator, and the piping system connecting these components. This piping system comprises air conditioning refrigerant pipes, which are further divided into low-pressure and high-pressure pipes. The low-pressure pipes, being at a low temperature, are constantly heated by the engine compartment, while the high-pressure pipes, being at a high temperature, require cooling. Therefore, to improve the cooling effect of the air conditioning, current technology combines the high-pressure and low-pressure pipes by placing the high-pressure pipe (outer pipe) around the low-pressure pipe (inner pipe), forming a coaxial pipe. This coaxial pipe acts as an internal heat exchanger. Within the coaxial pipe, the areas where high-pressure (hot) refrigerant gas and low-pressure (cold) refrigerant gas flow are separated and in opposite directions. High-pressure gaseous refrigerant flows from the compressor, while low-pressure gaseous refrigerant flows from the evaporator. When they meet in the coaxial pipe, the high-pressure gaseous refrigerant is cooled, improving the cooling efficiency of the air conditioning system.

[0003] The heat exchange efficiency of existing automotive air conditioning coaxial heat exchanger assemblies is not high, which affects the stable operation of the air conditioning. Moreover, the vibration caused by vehicle movement can easily loosen the joints of the heat exchanger tubes, affecting their service life. Utility Model Content

[0004] The purpose of this utility model is to provide a technical solution for a coaxial heat exchanger assembly for automotive air conditioning, which addresses the shortcomings of existing technologies. This solution not only improves the heat exchange efficiency between the low-pressure and high-pressure heat exchanger tubes, but also provides installation stability for the heat exchanger assembly, preventing it from falling off during prolonged use of the automotive air conditioning system and extending its service life.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A coaxial heat exchanger tube assembly for automotive air conditioning includes:

[0007] The low-pressure heat exchanger tube has a low-pressure inlet pipe and a low-pressure outlet pipe at its inlet and outlet ends, respectively.

[0008] High-pressure heat exchange tubes are provided with high-pressure input tubes and high-pressure output tubes at their inlet and outlet ends, respectively.

[0009] Its features are:

[0010] The high-pressure heat exchange tubes are spirally distributed along the outer surface of the low-pressure heat exchange tubes. The outer side of the high-pressure heat exchange tubes is covered with a protective sleeve, which is installed and positioned by a positioning mechanism. Through the above structural design, not only can the heat exchange efficiency between the low-pressure heat exchange tubes and the high-pressure heat exchange tubes be improved, but the installation stability of the heat exchange tube assembly can also be provided, preventing the heat exchange tube assembly from falling off due to long-term use of the automotive air conditioner and extending its service life.

[0011] Furthermore, the positioning mechanism includes a support frame, a clamping component, a supporting component, and a driving component. The supporting components are distributed from top to bottom on both sides of the support frame, the driving component is located at the top of the support frame, and the clamping component is movably connected to the support frame. The driving component drives the clamping component to move along the support frame, thereby cooperating with the supporting component to clamp and position the protective sleeve. The support frame improves the stability and reliability of the installation of the clamping component, the supporting component, and the driving component. The supporting component is used to support the protective sleeve, and the clamping component is used to clamp the protective sleeve, thereby achieving stable installation of the protective sleeve.

[0012] Furthermore, the support frame includes a top plate, side plates, and a mounting plate. The top plate is connected to the mounting plate via the side plates. The side plates are provided with parallel guide rails and guide grooves. The support components are movably connected to the guide rails and guide grooves. The mounting plate is provided with connecting holes for connecting the entire support frame to the car frame. The design of the guide rails and guide grooves facilitates the up-and-down movement of the support components along the guide rails and guide grooves, and the spacing between two adjacent support components can be adjusted according to the size of the protective sleeve.

[0013] Furthermore, the support assembly includes an arc-shaped support plate and a U-shaped slider. The U-shaped slider passes through a guide groove and is connected to the arc-shaped support plate. The arc-shaped support plate is located inside the side plate. The U-shaped slider is provided with a guide groove that matches the guide rail. The U-shaped slider is provided with a fastener. The U-shaped slider can drive the arc-shaped support plate to move vertically and adjust its height. Once it has moved to the desired position, the fastener can be tightened. The guide groove and guide rail can ensure that the arc-shaped support plate moves vertically.

[0014] Furthermore, the clamping assembly includes clamping components, columns, and rectangular frames that correspond one-to-one with the supporting components. Two adjacent clamping components are connected by columns, and the rectangular frame is connected to the clamping components at the top by columns. The rectangular frame is equipped with a push-pull plate with a threaded hole in the center. The columns improve the connection strength and stability between two adjacent clamping components, and the rectangular frame helps to ensure that the columns drive each clamping component to move up and down synchronously, thereby achieving synchronous clamping of the protective sleeve.

[0015] Furthermore, the clamping component includes an arc-shaped pressure plate, a connecting rod, and a reinforcing rod. The two arc-shaped pressure plates are arranged in opposite directions and are fixedly connected by two parallel connecting rods. The reinforcing rod is located between the two connecting rods. Through the design of the connecting rod and the reinforcing rod, the connection strength and stability between the two arc-shaped pressure plates can be improved, thereby improving the installation stability of the heat exchanger tube assembly.

[0016] Furthermore, the drive assembly includes a hand crank, a screw, and a U-shaped frame. The U-shaped frame is located on the top of the support frame, and the hand crank is located at the end of the screw. The other end of the screw passes through the U-shaped frame and a threaded hole and is connected to the support frame. By rotating the hand crank, the screw can be rotated, which in turn can drive the push-pull plate to move up and down, thereby adjusting the height of the clamping assembly. The U-shaped frame improves the stability and reliability of the screw during rotation.

[0017] This utility model, by adopting the above-mentioned technical solution, has the following beneficial effects:

[0018] 1. This utility model can not only improve the heat exchange efficiency between low-pressure heat exchange tubes and high-pressure heat exchange tubes, but also provide installation stability for the heat exchange tube assembly, preventing the heat exchange tube assembly from falling off due to long-term use of automotive air conditioning and extending its service life.

[0019] 2. The support frame improves the stability and reliability of the installation of the clamping assembly, the supporting assembly, and the driving assembly. The supporting assembly is used to support the protective sleeve, and the clamping assembly is used to clamp the protective sleeve, so as to achieve stable installation of the protective sleeve.

[0020] 3. The U-shaped slider can move the arc-shaped support plate vertically to adjust the height. Once the desired position is reached, tighten the fasteners. The guide groove and guide rail ensure that the arc-shaped support plate moves vertically.

[0021] 4. The design of connecting rods and reinforcing rods can improve the connection strength and stability between the two arc-shaped pressure plates, thereby improving the installation stability of the heat exchanger tube assembly. Attached image description:

[0022] The present invention will be further described below with reference to the accompanying drawings:

[0023] Figure 1 This is a rendering of a coaxial heat exchanger tube assembly for an automotive air conditioner according to the present invention.

[0024] Figure 2 This is a schematic diagram of the positioning mechanism in this utility model;

[0025] Figure 3 This is a schematic diagram of the clamping assembly in this utility model;

[0026] Figure 4This is a schematic diagram of the support component in this utility model;

[0027] Figure 5 This is a schematic diagram showing the connection between the low-pressure heat exchanger tube, the high-pressure heat exchanger tube, and the protective sleeve in this utility model.

[0028] In the diagram: 1-Low-pressure inlet pipe; 2-Low-pressure outlet pipe; 3-Protective sleeve; 4-High-pressure input pipe; 5-High-pressure output pipe; 6-Positioning mechanism; 7-Top plate; 8-Side plate; 9-Mounting plate; 10-Pressure assembly; 11-U-shaped frame; 12-Screw; 13-Hand crank turntable; 14-Support assembly; 15-Guide groove; 16-Guide rail; 17-Arc-shaped pressure plate; 18-Connecting rod; 19-Reinforcing rod; 20-Column; 21-Rectangular frame; 22-Push-pull plate; 23-Threaded hole; 24-Arc-shaped support plate; 25-U-shaped slider; 26-Guide groove; 27-Fastener; 28-Low-pressure heat exchanger tube; 29-High-pressure heat exchanger tube. Detailed Implementation

[0029] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0031] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0032] like Figures 1 to 5 As shown, this utility model discloses a coaxial heat exchanger tube assembly for automotive air conditioning, including a low-pressure heat exchanger tube 28 and a high-pressure heat exchanger tube 29. The high-pressure heat exchanger tube 29 is spirally distributed along the outer surface of the low-pressure heat exchanger tube 28, and a protective sleeve 3 covers the outer side of the high-pressure heat exchanger tube 29.

[0033] The low-pressure heat exchange tube 28 is provided with a low-pressure inlet pipe 1 and a low-pressure outlet pipe 2 at its inlet and outlet ends, respectively. The high-pressure heat exchange tube 29 is provided with a high-pressure input pipe 4 and a high-pressure output pipe 5 at its inlet and outlet ends, respectively. The high-pressure input pipe 4 is located on the side closer to the low-pressure outlet pipe 2, and the high-pressure output pipe 5 is located on the side closer to the low-pressure inlet pipe 1.

[0034] The protective sleeve 3 is installed and positioned by the positioning mechanism 6. The positioning mechanism 6 includes a support frame, a clamping component 10, a supporting component 14, and a driving component. The supporting component 14 is distributed on both sides of the support frame from top to bottom. The driving component is located at the top of the support frame. The clamping component 10 is movably connected to the support frame. The driving component drives the clamping component 10 to move along the support frame, so as to cooperate with the supporting component 14 to clamp and position the protective sleeve 3. The support frame improves the stability and reliability of the installation of the clamping component 10, the supporting component 14, and the driving component. The supporting component 14 is used to support the protective sleeve 3, and the clamping component 10 is used to clamp the protective sleeve 3, so as to achieve stable installation of the protective sleeve 3.

[0035] The support frame includes a top plate 7, side plates 8, and a mounting plate 9. The top plate 7 is connected to the mounting plate 9 via the side plates 8. The side plates 8 are provided with parallel guide rails 16 and guide grooves 15. The support assembly 14 is movably connected to the guide rails 16 and guide grooves 15. The mounting plate 9 is provided with connecting holes for connecting the entire support frame to the car frame. The design of the guide rails 16 and guide grooves 15 facilitates the up-and-down movement of the support assembly 14 along the guide rails 16 and guide grooves 15. The spacing between two adjacent support assemblies 14 can be adjusted according to the size of the protective sleeve 3.

[0036] The support assembly 14 includes an arc-shaped support plate 24 and a U-shaped slider 25. The U-shaped slider 25 passes through the guide groove 15 and is connected to the arc-shaped support plate 24. The arc-shaped support plate 24 is located inside the side plate 8. The U-shaped slider 25 is provided with a guide groove 26, which matches the guide rail 16. The U-shaped slider 25 is provided with a fastener 27. The U-shaped slider 25 can drive the arc-shaped support plate 24 to move in the vertical direction to adjust the height position. When it moves to the desired position, the fastener 27 can be tightened. The guide groove 26 and the guide rail 16 can ensure that the arc-shaped support plate 24 moves in the vertical direction.

[0037] The clamping assembly 10 includes clamping members corresponding to the supporting assembly 14, columns 20, and rectangular frames 21. Two adjacent clamping members are connected by columns 20. The rectangular frame 21 is connected to the top clamping member by columns 20. The rectangular frame 21 is provided with a push-pull plate 22, and a threaded hole 23 is provided in the center of the push-pull plate 22. The columns 20 improve the connection strength and stability between two adjacent clamping members. The rectangular frame 21 helps to ensure that the columns 20 drive each clamping member to move up and down synchronously, so as to achieve synchronous clamping of the protective sleeve 3.

[0038] The clamping component includes an arc-shaped pressure plate 17, a connecting rod 18, and a reinforcing rod 19. The two arc-shaped pressure plates 17 are arranged in opposite directions and are fixedly connected by two parallel connecting rods 18. The reinforcing rod 19 is located between the two connecting rods 18. Through the design of the connecting rods 18 and the reinforcing rod 19, the connection strength and stability between the two arc-shaped pressure plates 17 can be improved, thereby improving the installation stability of the heat exchange tube assembly.

[0039] The drive assembly includes a hand-cranked turntable 13, a screw 12, and a U-shaped frame 11. The U-shaped frame 11 is located at the top of the support frame, and the hand-cranked turntable 13 is located at the end of the screw 12. The other end of the screw 12 passes through the U-shaped frame 11 and the threaded hole 23 and is connected to the support frame. By rotating the hand-cranked turntable 13, the screw 12 is rotated, which in turn drives the push-pull plate 22 to move up and down, thereby adjusting the height of the clamping assembly 10. The U-shaped frame 11 improves the stability and reliability of the screw 12 during rotation. The screw 12 and the push-pull plate 22 are connected by a thread, and the screw 12 and the U-shaped frame 11 are fitted with a clearance fit. The bottom of the screw 12 is rotatably connected to the top plate 7.

[0040] The above-mentioned structural design not only improves the heat exchange efficiency between the low-pressure heat exchange tube 28 and the high-pressure heat exchange tube 29, but also provides installation stability for the heat exchange tube assembly, preventing the heat exchange tube assembly from falling off due to prolonged use of the automotive air conditioner and extending its service life.

[0041] The above are merely specific embodiments of this utility model, but the technical features of this utility model are not limited thereto. Any simple changes, equivalent substitutions, or modifications made based on this utility model to achieve essentially the same technical effect are all covered within the protection scope of this utility model.

Claims

1. A coaxial heat exchanger tube assembly for automotive air conditioning, comprising: A low-pressure heat exchange tube, wherein the inlet and outlet ends of the low-pressure heat exchange tube are respectively provided with a low-pressure inlet pipe and a low-pressure outlet pipe; A high-pressure heat exchange tube, wherein the inlet and outlet ends of the high-pressure heat exchange tube are respectively provided with a high-pressure input tube and a high-pressure output tube; Its features are: The high-pressure heat exchange tubes are spirally distributed along the outer surface of the low-pressure heat exchange tubes. The outer side of the high-pressure heat exchange tubes is covered with a protective sleeve, which is installed and positioned by a positioning mechanism.

2. An automotive air conditioning coaxial heat exchange tube assembly according to claim 1, characterized in that: The positioning mechanism includes a support frame, a clamping component, a supporting component, and a driving component. The supporting components are distributed from top to bottom on both sides of the support frame. The driving component is located at the top of the support frame. The clamping component is movably connected to the support frame. The driving component drives the clamping component to move along the support frame, thereby cooperating with the supporting component to clamp and position the protective sleeve.

3. An automotive air conditioning coaxial heat exchange tube assembly according to claim 2, characterized in that: The support frame includes a top plate, side plates, and a mounting plate. The top plate is connected to the mounting plate through the side plates. The side plates are provided with parallel guide rails and guide grooves. The supporting component is movably connected to the guide rails and the guide grooves.

4. An automotive air conditioning coaxial heat exchange tube assembly according to claim 3, characterized in that: The support assembly includes an arc-shaped support plate and a U-shaped slider. The U-shaped slider passes through the guide groove and is connected to the arc-shaped support plate. The arc-shaped support plate is located inside the side plate. The U-shaped slider is provided with a guide groove that matches the guide rail. The U-shaped slider is provided with fasteners.

5. An automotive air conditioning coaxial heat exchange tube assembly as claimed in claim 2, wherein: The clamping assembly includes clamping members, columns, and rectangular frames that correspond one-to-one with the supporting assembly. Two adjacent clamping members are connected by the columns. The rectangular frame is connected to the clamping members at the top by the columns. The rectangular frame is provided with a push-pull plate, and the center of the push-pull plate is provided with a threaded hole.

6. An automotive air conditioning coaxial heat exchange tube assembly according to claim 5, characterized in that: The clamping component includes an arc-shaped pressure plate, a connecting rod, and a reinforcing rod. The two arc-shaped pressure plates are arranged in opposite directions, and The two connecting rods are fixedly connected by two parallel connecting rods, and the reinforcing rod is located between the two connecting rods.

7. An automotive air conditioning coaxial heat exchange tube assembly according to claim 5, characterized in that: The drive assembly includes a hand crank, a screw, and a U-shaped frame. The U-shaped frame is located on the top of the support frame, the hand crank is located at the end of the screw, and the other end of the screw passes through the U-shaped frame and the threaded hole and is connected to the support frame.

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