Double-layer pipe efficient heat exchange structure of automobile air conditioner

Abstract

The utility model relates to the field of heat exchange structures, and particularly discloses an automobile air conditioner double-layer pipe efficient heat exchange structure which comprises a heat exchange pipe mechanism, one end of the heat exchange pipe mechanism is fixedly connected with a first plugging head, the other end of the heat exchange pipe mechanism is fixedly connected with a second plugging head, one end of the first plugging head is fixedly connected with a low-pressure air suction pipe, and the other end of the second plugging head is fixedly connected with a high-pressure air suction pipe. The outer side of the first plugging head is further fixedly connected with a high-pressure liquid outlet pipe. By means of the double-layer pipe and the spiral winding technology, the automobile air conditioner heat exchange structure achieves perfect combination of efficient heat exchange and compact design, the heat exchange pipe mechanism integrates the double structures of the metal outer pipe and the rolled threaded inner pipe, the metal outer pipe serves as firm outer layer protection, the stability of the structure is guaranteed, and the service life of the structure is prolonged. And a spiral cavity is ingeniously formed between the inner tube and the rolled threaded inner tube, so that the surface area of heat exchange is obviously increased.

Description

Technical Field

[0001] The utility model belongs to the field of heat exchange structures, and particularly relates to a high-efficiency heat exchange structure of a double-layer tube for an automotive air conditioner. Background Art

[0002] With the rapid development of the automotive industry and the increasingly severe global energy problems, improving the energy efficiency ratio of automotive air conditioning systems and reducing energy consumption have become the focus of common concern inside and outside the industry. Traditional automotive air conditioning systems mostly use single-layer tubes or heat exchange elements with simple structures, and these designs have many deficiencies in terms of heat exchange efficiency, system stability, and durability. To overcome these defects, the heat exchange structures and technologies of automotive air conditioning systems are constantly innovating. Among them, the high-efficiency heat exchange structure of double-layer tubes is an important technological innovation in recent years.

[0003] Due to the limited heat exchange area, the traditional single-layer tube heat exchange structure often fails to achieve ideal heat exchange efficiency. At the same time, when the single-layer tube bears high-pressure and high-temperature fluids, its structural strength also faces challenges, and problems such as deformation or rupture are likely to occur. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a high-efficiency heat exchange structure of a double-layer tube for an automotive air conditioner to solve problems such as the traditional single-layer tube heat exchange structure in the prior art often failing to achieve ideal heat exchange efficiency due to limited heat exchange area.

[0005] A high-efficiency heat exchange structure of a double-layer tube for an automotive air conditioner includes a heat exchange tube mechanism. One end of the heat exchange tube mechanism is fixedly connected to a first plugging head, and the other end of the heat exchange tube mechanism is fixedly connected to a second plugging head. One end of the first plugging head is fixedly connected to a low-pressure suction pipe, and a high-pressure liquid outlet pipe is also fixedly connected to the outer side of the first plugging head. One end of the second plugging head is fixedly connected to a low-pressure air outlet pipe assembly, and a high-pressure liquid inlet pipe assembly is also fixedly connected to the outer side of the second plugging head.

[0006] The heat exchange tube mechanism includes a metal outer tube, and a rolled-thread inner tube is arranged inside the metal outer tube, and the outer side of the rolled-thread inner tube is spirally wound.

[0007] The internal channel of the rolled-thread inner tube is communicated with the low-pressure suction pipe, and the internal channel of the rolled-thread inner tube is communicated with the low-pressure air outlet pipe assembly.

[0008] The spiral chamber formed between the metal outer tube and the rolled-thread inner tube is communicated with the high-pressure liquid outlet pipe, and the spiral chamber formed between the metal outer tube and the rolled-thread inner tube is communicated with the high-pressure liquid inlet pipe assembly.

[0009] Preferably, a convex portion is also provided at the bent position of the outer side of the metal outer tube.

[0010] Preferably, the high-pressure liquid outlet pipe is embedded in the interior of the plugging head 1 and fixed by welding.

[0011] Preferably, the high-pressure liquid outlet pipe covers the outer side of the plugging head 1 and is fixed by welding.

[0012] Preferably, the low-pressure air outlet pipe assembly comprises a low-pressure air outlet pipe body, and a hose 1 is also arranged in the middle of the low-pressure air outlet pipe body.

[0013] Preferably, the high-pressure liquid inlet pipe assembly comprises a high-pressure liquid inlet pipe body, and a second hose is arranged in the middle of the high-pressure liquid inlet pipe body.

[0014] Compared with the prior art, the utility model has the following beneficial effects: through the double-layer tube and spiral winding technology, the automobile air-conditioning heat exchange structure realizes the perfect combination of efficient heat exchange and compact design, and the heat exchange tube mechanism integrates the dual structure of the metal outer tube and the rolled threaded inner tube. The metal outer tube serves as a solid outer layer protection, which not only ensures the stability of the structure, but also cleverly forms a spiral chamber with the rolled threaded inner tube, significantly increasing the surface area of ​​heat exchange. The outer spiral winding design of the rolled threaded inner tube raises the heat exchange efficiency to a new level, allowing low-pressure gas and high-pressure liquid to fully exchange heat in their respective channels. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the rolled threaded inner tube of the utility model;

[0017] Figure 3 It is a cross-sectional view of the raised portion of the utility model;

[0018] Figure 4 This is a first cross-sectional view of a plugging head 1 of Embodiment 3 of the present utility model;

[0019] Figure 5 This is a second cross-sectional view of a plugging head 1 of Embodiment 3 of the present utility model;

[0020] Figure 6 This is the first cross-sectional view of the sealing head 1 of the fourth embodiment of the utility model.

[0021] In the figure: 1. heat exchange tube mechanism; 11. metal outer tube; 12. rolled threaded inner tube; 13. raised portion; 2. plugging head 1; 3. plugging head 2; 4. low-pressure air intake pipe; 5. high-pressure liquid outlet pipe; 6. low-pressure air outlet pipe assembly; 61. low-pressure air outlet pipe body; 62. hose 1; 7. high-pressure liquid inlet pipe assembly; 71. high-pressure liquid inlet pipe body; 72. hose 2. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figures 1 to 6 As shown:

[0024] Embodiment 1: The utility model provides a double-layer tube high-efficiency heat exchange structure for automobile air conditioner, comprising a heat exchange tube mechanism 1, one end of the heat exchange tube mechanism 1 is fixedly connected with a plugging head 2, the other end of the heat exchange tube mechanism 1 is fixedly connected with a plugging head 3, one end of the plugging head 2 is fixedly connected with a low-pressure air intake pipe 4, the outer side of the plugging head 2 is also fixedly connected with a high-pressure liquid outlet pipe 5, one end of the plugging head 3 is fixedly connected with a low-pressure air outlet pipe assembly 6, and the outer side of the plugging head 3 is also fixedly connected with a high-pressure liquid inlet pipe assembly 7;

[0025] The heat exchange tube mechanism 1 includes a metal outer tube 11, a rolled threaded inner tube 12 is arranged inside the metal outer tube 11, and the outer side of the rolled threaded inner tube 12 is in a spiral winding shape; wherein, the metal outer tube 11 serves as an external protective layer, which not only provides structural strength, but also forms a spiral chamber between the rolled threaded inner tube 12 for the flow of fluid. The outer side of the rolled threaded inner tube 12 is in a spiral winding shape. This design greatly increases the heat exchange area and improves the heat exchange efficiency.

[0026] The internal passage of the rolled threaded inner tube 12 and the low-pressure air intake pipe 4 are communicated with each other, and the internal passage of the rolled threaded inner tube 12 and the low-pressure air outlet pipe assembly 6 are communicated with each other;

[0027] like Figure 2 As shown, the spiral chamber formed between the metal outer tube 11 and the rolled threaded inner tube 12 and the high-pressure liquid outlet pipe 5 are interconnected, and the spiral chamber formed between the metal outer tube 11 and the rolled threaded inner tube 12 and the high-pressure liquid inlet pipe assembly 7 are interconnected.

[0028] As can be seen from the above, since the spiral chamber formed between the metal outer tube 11 and the rolled threaded inner tube 12 and the high-pressure liquid outlet pipe 5 are interconnected, and the spiral chamber formed between the metal outer tube 11 and the rolled threaded inner tube 12 and the high-pressure liquid inlet pipe assembly 7 are interconnected, the high-pressure liquid introduced through the high-pressure liquid inlet pipe assembly 7 will pass through the spiral chamber and then be discharged from the high-pressure liquid outlet pipe 5;

[0029] Since the internal channel of the rolled-thread inner tube 12 is interconnected with the low-pressure suction pipe 4 and the internal channel of the rolled-thread inner tube 12 is interconnected with the low-pressure outlet pipe assembly 6, the low-pressure gas introduced through the low-pressure suction pipe 4 will pass through the internal channel of the rolled-thread inner tube 12 and then be exported from the low-pressure outlet pipe assembly 6;

[0030] When the high-pressure liquid is in the spiral chamber and the low-pressure gas is in the internal channel of the rolled-thread inner tube 12, heat exchange will occur between the inner and outer chambers of the rolled-thread inner tube 12, thereby enabling the high-pressure liquid to be rapidly cooled.

[0031] Embodiment 2: This embodiment is basically the same as the previous embodiment, except that, as Figure 1 and Figure 3 shown, a convex portion 13 is also provided at the bent position on the outer side of the metal outer tube 11.

[0032] As can be seen from the above, by using the convex portion 13 as a strengthening structure on the metal outer tube, the strength of the entire heat exchange tube mechanism at the bent portion can be significantly improved. During vehicle driving, especially when facing complex and changeable road conditions, this enhanced structural strength can effectively prevent the heat exchange tube from being damaged due to vibration or impact; at the same time, the convex portion 13 will guide the fluid inside the metal outer tube 11 to form a more uniform flow state in the spiral chamber, thereby further improving the heat exchange efficiency. At the same time, the presence of the convex portion 13 increases the contact area between the metal outer tube and the surrounding environment to a certain extent, which helps the heat to be dissipated into the environment faster, thereby enhancing the overall heat exchange efficiency.

[0033] Embodiment 3:

[0034] As Figure 4 and Figure 5 shown, the high-pressure liquid outlet pipe 5 is embedded in the inside of the first plug 2 and fixed by welding.

[0035] As can be seen from the above, through the embedding and welding process, good sealing performance at the connection can be ensured, effectively preventing fluid leakage and ensuring the normal operation of the heat exchange system. The welded connection can provide extremely high connection strength, making the connection between the high-pressure liquid outlet pipe 5 and the first plug 2 almost integral and capable of withstanding large pressures and vibrations.

[0036] Embodiment 4:

[0037] As Figure 6 shown, the high-pressure liquid outlet pipe 5 covers the outside of the first plug 2 and is fixed by welding.

[0038] As can be seen from the above, the high-pressure liquid outlet pipe 5 covers the outside of the first plugging head 2, enabling the staff to perform maintenance conveniently. The welded connection can provide extremely high connection strength, making the connection between the high-pressure liquid outlet pipe 5 and the first plugging head 2 almost integrated and able to withstand greater pressure and vibration.

[0039] Embodiment 4:

[0040] As Figure 2 shown, the low-pressure gas outlet pipe assembly 6 includes a low-pressure gas outlet pipe body 61, and a first hose 62 is also provided in the middle of the low-pressure gas outlet pipe body 61.

[0041] Specifically, the high-pressure liquid inlet pipe assembly 7 includes a high-pressure liquid inlet pipe body 71, and a second hose 72 is also provided in the middle of the high-pressure liquid inlet pipe body 71.

[0042] As can be seen from the above, the first hose 62 and the second hose 72 can absorb the pipeline displacement caused by vibration or temperature change, thereby protecting the entire pipeline system from mechanical stress. Secondly, the first hose 62 and the second hose 72 can also provide greater flexibility for the installation and maintenance of the pipeline system, making it easier to adjust the position and direction of the pipeline in a limited space.

[0043] Application process:

[0044] With the rapid development of the automotive industry and the continuous improvement of consumers' requirements for vehicle comfort, the performance optimization of automotive air conditioning systems has become the focus of major automotive manufacturers. In order to improve the heat exchange efficiency of the air conditioning system, reduce energy consumption, and ensure the stability and durability of the system, this efficient heat exchange structure for automotive air conditioning double-layer pipes is introduced;

[0045] Adopt a double-layer pipe structure, that is, the combination of the metal outer pipe 11 and the rolled-thread inner pipe 12, to form a spiral chamber, greatly increasing the heat exchange area and improving the heat exchange efficiency;

[0046] According to requirements, a raised portion 13 is added at the bending position of the metal outer pipe 11 to enhance the structural strength, optimize the fluid flow, and improve the overall heat exchange efficiency.

[0047] The low-pressure suction pipe 4 is connected to the internal channel of the rolled-thread inner pipe 12 to ensure that the low-pressure gas enters and passes through the heat exchange pipe mechanism smoothly.

[0048] The low-pressure gas outlet pipe assembly 6 includes a low-pressure gas outlet pipe body 61 and a first hose 62. The setting of the first hose 62 increases the flexibility of the system, facilitates installation and maintenance, and can absorb vibration and displacement to protect the pipeline system.

[0049] The high-pressure liquid inlet pipe assembly 7 includes a high-pressure liquid inlet pipe body 71 and a second hose 72, also using a hose design to improve the adaptability and maintenance convenience of the system.

[0050] In different embodiments, the connection manner between the high-pressure liquid outlet pipe 5 and the first plug 2 is different, but the connection strength and tightness are ensured by welding. Embedded welding and covering welding each have their own advantages. The former pays more attention to tightness and compactness, while the latter is convenient for maintenance.

[0051] All the standard parts used in the present utility model can be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection manners of each part all adopt the conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art. In addition, the circuit connection adopts the conventional connection manner in the prior art, which will not be elaborated herein. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0052] In the description of the present utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. The meaning of "a plurality" is two or more, unless otherwise specifically defined.

[0053] In the present utility model, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected with", "fixed" and the like should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0054] In the present utility model, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on the top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under the bottom of" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0055] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0056] In the attached drawings of the disclosed embodiments of the present utility model, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

[0057] Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A high-efficiency heat exchange structure for a double-layer pipe of an automotive air conditioner, characterized in that, It includes a heat exchange tube mechanism (1), one end of the heat exchange tube mechanism (1) is fixedly connected to a first plug (2), the other end of the heat exchange tube mechanism (1) is fixedly connected to a second plug (3), one end of the first plug (2) is fixedly connected to a low-pressure suction pipe (4), and a high-pressure liquid outlet pipe (5) is also fixedly connected to the outside of the first plug (2). One end of the second plug (3) is fixedly connected to a low-pressure air outlet pipe assembly (6), and a high-pressure liquid inlet pipe assembly (7) is also fixedly connected to the outside of the second plug (3); The heat exchange tube mechanism (1) includes a metal outer tube (11), and a rolled-thread inner tube (12) is arranged inside the metal outer tube (11), and the outside of the rolled-thread inner tube (12) is spirally wound; The internal channel of the rolled-thread inner tube (12) is in communication with the low-pressure suction pipe (4), and the internal channel of the rolled-thread inner tube (12) is in communication with the low-pressure air outlet pipe assembly (6); The spiral chamber formed between the metal outer tube (11) and the rolled-thread inner tube (12) is in communication with the high-pressure liquid outlet pipe (5), and the spiral chamber formed between the metal outer tube (11) and the rolled-thread inner tube (12) is in communication with the high-pressure liquid inlet pipe assembly (7).

2. The high-efficiency heat exchange structure of the double-layer pipe of an automotive air conditioner according to claim 1, wherein A convex portion (13) is also provided at the bent position of the outside of the metal outer tube (11).

3. The high-efficiency heat exchange structure of the double-layer pipe of an automotive air conditioner according to claim 2, wherein The high-pressure liquid outlet pipe (5) is embedded inside the first plug (2) and fixed by welding.

4. The high-efficiency heat exchange structure of a double-layer pipe for an automotive air conditioner according to claim 2, wherein, The high-pressure liquid outlet pipe (5) covers the outside of the first plug (2) and is fixed by welding.

5. The high-efficiency heat exchange structure of the double-layer pipe of an automotive air conditioner according to claim 2, wherein, The low-pressure air outlet pipe assembly (6) includes a low-pressure air outlet pipe body (61), and a first hose (62) is also arranged in the middle of the low-pressure air outlet pipe body (61).

6. The high-efficiency heat exchange structure of a double-layer pipe for an automotive air conditioner according to claim 5, characterized in that, The high-pressure liquid inlet pipe assembly (7) includes a high-pressure liquid inlet pipe body (71), and a second hose (72) is also arranged in the middle of the high-pressure liquid inlet pipe body (71).

Images