Vehicle-mounted air heater heat exchanger

Abstract

The utility model relates to a kind of vehicle-mounted air heating air conditioner heat exchanger, including heat dissipation component, import pressure plate, export pressure plate, connecting pipe, liquid outlet pipe and support piece;Two groups of heat dissipation components are heat dissipation component;Two groups of heat dissipation components are connected by support piece;Import pressure plate and export pressure plate are respectively arranged in one end of one group of heat dissipation components;Connecting pipe two ends are respectively communicated in two groups of heat dissipation components;Liquid outlet pipe is connected in one end of another group of heat dissipation components, and liquid outlet pipe is placed close to export pressure plate, solve the technical problem that single group of heat dissipation structure design is used in prior art in vehicle-mounted air conditioning heat exchanger, and the technical problem that the heat dissipation area is limited, and part of product is not set with special side protection and reinforcing structure.

Description

Technical Field

[0001] This utility model relates to the field of heat exchangers, and in particular to a vehicle-mounted heating and air conditioning heat exchanger. Background Technology

[0002] In automotive air conditioning systems, heat exchangers are the core components for refrigerant heat exchange, and their performance directly affects the cooling efficiency, energy consumption, and speed of temperature regulation inside the vehicle. As the automotive industry continues to demand higher levels of energy efficiency, higher performance, and more compact design, traditional automotive air conditioning heat exchangers are gradually revealing their shortcomings. Traditional automotive air conditioning heat exchangers often employ a single-unit heat dissipation structure design, resulting in limited heat dissipation area. Furthermore, some products lack dedicated side protection and reinforcement structures. In high-temperature summer conditions or when the vehicle is operating under heavy load, the refrigerant struggles to dissipate heat effectively within the heat exchanger, failing to quickly transition from a gaseous to a cool liquid state. This leads to a significant decrease in air conditioning efficiency, requiring more vehicle power to maintain operation and prolonging the time it takes for the interior temperature to reach the set comfort level, thus impacting the comfort experience for passengers. Utility Model Content

[0003] This application provides a vehicle-mounted heating and air conditioning heat exchanger, which solves the technical problems of existing vehicle-mounted air conditioning heat exchangers that mostly adopt a single heat dissipation structure design, have limited heat dissipation area, and lack dedicated side protection and reinforcement structures.

[0004] The technical solutions adopted in the embodiments of this application are as follows.

[0005] A vehicle-mounted heating and air conditioning heat exchanger includes a heat dissipation assembly, an inlet pressure plate, an outlet pressure plate, a connecting pipe, a liquid outlet pipe, and a support member. The heat dissipation assembly comprises two sets, connected by the support member. The inlet pressure plate and the outlet pressure plate are respectively disposed at both ends of one set of the heat dissipation assembly. The connecting pipe is connected at both ends to the two sets of heat dissipation assemblies. The liquid outlet pipe is connected to one end of the other set of heat dissipation assemblies and is positioned close to the outlet pressure plate.

[0006] As a further improvement to the above technical solution: A further technical solution is as follows: the heat dissipation assembly includes a first liquid collection pipe, a second liquid collection pipe, and a flat pipe; the flat pipe is connected between the first liquid collection pipe and the second liquid collection pipe; the flat pipes are in several groups and arranged in a linear array; two groups of the first liquid collection pipes are connected by the support member; two groups of the second liquid collection pipes are connected by the support member.

[0007] A further technical solution is as follows: the inlet pressure plate is connected to one of the first liquid collecting pipes; the two ends of the connecting pipe are respectively connected between the two sets of first liquid collecting pipes; the outlet pressure plate is connected to one of the second liquid collecting pipes; and the outlet pipe is connected to the other set of second liquid collecting pipes.

[0008] A further technical solution is as follows: fins are provided between the flat tubes; the fins are located on one side of the second liquid collecting tube.

[0009] A further technical solution is that side plates are provided on both sides of the heat dissipation component.

[0010] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. This vehicle-mounted heating and air conditioning heat exchanger adopts a double-layer design with two sets of heat dissipation components, significantly increasing the heat dissipation area compared to traditional single-set heat dissipation structures. During refrigerant flow, secondary heat dissipation is achieved through the flat tubes and fins within the two sets of heat dissipation components, allowing the refrigerant to fully exchange heat with the outside environment and quickly transform from a gaseous state to a cool liquid state, effectively improving the air conditioning's cooling efficiency. Even in high-temperature summer conditions or under high-load vehicle operation, it ensures a stable output of cooling capacity from the air conditioning system, quickly reducing the interior temperature and improving the comfort of passengers. On one hand, the heat exchanger integrates and connects the two sets of heat dissipation components through support components, increasing the heat dissipation area without excessively increasing the overall volume, achieving a compact design that better adapts to the limited installation space inside the vehicle. On the other hand, the side plates on both sides of the heat dissipation components provide comprehensive protection for core heat exchange components such as flat tubes and fins, preventing damage to components due to collisions and compression during assembly, transportation, and use. This also enhances the overall rigidity of the heat dissipation components, preventing deformation due to temperature changes or vibrations, significantly improving the heat exchanger's adaptability and reliability in complex automotive operating environments. 2. The heat exchanger's components are connected using reliable methods such as welding and bolting. For example, the connecting pipe is welded to the first liquid collector pipe; the inlet and outlet pressure plates are bolted to the first and second liquid collector pipes; and the side plates are spot-welded to the first and second liquid collector pipes. This ensures the stability of the connections between components and effectively prevents problems such as loosening and leakage caused by vibration during vehicle operation. Furthermore, the first and second liquid collector pipes are made of corrosion-resistant copper tubing, the fins are made of high-thermal-conductivity aluminum foil, the support components are made of high-strength aluminum alloy, and the side plates are made of high-strength cold-rolled steel plate. All components possess excellent corrosion resistance, wear resistance, and structural strength, significantly extending the heat exchanger's service life and improving the reliability of the air conditioning system. 3. The heat exchanger features a simple and rational structural design with clearly defined installation positions for each component. The side plates are manufactured using a stamping process, and their connection to the heat dissipation components is simple and reliable. During production and assembly, no complex assembly processes or specialized equipment are required, facilitating mass production and reducing manufacturing costs. Furthermore, during subsequent maintenance and repair, the simple and reliable connection methods between the inlet and outlet pressure plates and the liquid collection pipe, along with the clear structural layout, allow personnel to quickly locate and resolve faults. The presence of the side plates also reduces the frequency of replacement due to damage to the flat tubes and fins, further reducing maintenance time and costs. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of a vehicle-mounted heating and air conditioning heat exchanger according to the present invention.

[0012] Figure 2 This is a cross-sectional view of the overall structure of a vehicle-mounted heating and air conditioning heat exchanger according to the present invention.

[0013] Figure 3 In this utility model Figure 1 Enlarged view of point C.

[0014] In the diagram: 1. Heat dissipation component; 11. First liquid collection pipe; 12. Second liquid collection pipe; 13. Flat pipe; 131. Fin; 2. Inlet pressure plate; 3. Outlet pressure plate; 4. Connecting pipe; 5. Liquid outlet pipe; 6. Support component; 7. Side plate. Detailed Implementation

[0015] This application provides a vehicle-mounted heating and air conditioning heat exchanger, solving the technical problems of existing vehicle-mounted air conditioning heat exchangers that mostly adopt a single-unit heat dissipation structure design, resulting in limited heat dissipation area, and some products lacking dedicated side protection and reinforcement structures. The technical solution in this application aims to solve the above problems, and the overall approach is as follows: To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0016] A type of vehicle heating and air conditioning heat exchanger, such as Figure 1 , Figure 2 and Figure 3 As shown, It includes a heat dissipation assembly 1, an inlet pressure plate 2, an outlet pressure plate 3, a connecting pipe 4, an outlet pipe 5, a support component 6, and a side plate 7. Among them, the heat dissipation assembly 1 is configured as two sets, which are symmetrically distributed and fixedly connected by the support component 6. The support component 6 is made of high-strength aluminum alloy, which not only has good support stability, but also reduces the overall weight of the component, meeting the requirements of automotive lightweighting. Side plates 7 are installed on both sides of each heat dissipation component 1. The side plates 7 are made of cold-rolled steel plates, formed by stamping, and then fixedly connected to the first liquid collection pipe 11 and the second liquid collection pipe 12 of the heat dissipation component 1 by spot welding. The height of the side plates 7 is consistent with the overall height of the heat dissipation component 1, and the width covers the side area of ​​the heat dissipation component 1. It can provide comprehensive protection for the flat tubes 13 and fins 131 on both sides of the heat dissipation component 1, and prevent the flat tubes 13 from deforming and the fins 131 from being damaged by collisions or squeezing of external objects during assembly, transportation and use. At the same time, it can also enhance the overall structural rigidity of the heat dissipation component 1 and prevent the heat dissipation component 1 from warping due to temperature changes or vibration. Each heat dissipation assembly 1 consists of a first liquid collecting pipe 11, a second liquid collecting pipe 12, and a flat tube 13. The first liquid collecting pipe 11 and the second liquid collecting pipe 12 are arranged in parallel, both being hollow cylindrical structures made of corrosion-resistant copper tubing. This effectively prevents corrosion of the pipe walls during long-term refrigerant flow, extending the service life of the liquid collecting pipes. The flat tube 13 connects the first liquid collecting pipe 11 and the second liquid collecting pipe 12, serving as the main channel for refrigerant flow and heat exchange. Several groups of flat tubes 13 are arranged in a linear array, and this spacing design ensures both the efficiency of refrigerant flow within the flat tubes 13 and provides sufficient space for the subsequent installation of fins 131. Fins 131 are also provided between the flat tubes 13. The fins 131 are made of corrugated aluminum foil and are fixed to the surface of the flat tubes 13 by brazing. The fins 131 are mainly located on one side of the second liquid collecting tube 12. The corrugated structure can significantly increase the contact area between the fins 131 and the air, improve the heat exchange efficiency, and the aluminum foil material has good thermal conductivity, which can quickly transfer the heat of the refrigerant in the flat tubes 13 to the air, achieving efficient heat dissipation. The inlet pressure plate 2 and outlet pressure plate 3 are respectively installed at both ends of one of the heat dissipation components 1. Specifically, the inlet pressure plate 2 is bolted to the first liquid collection pipe 11 of the heat dissipation component 1, and the outlet pressure plate 3 is fixed to the second liquid collection pipe 12 of the heat dissipation component 1 in the same way. The installation of the inlet pressure plate 2 and outlet pressure plate 3 not only reinforces the liquid collection pipe and prevents it from shifting due to vibration during vehicle operation, but also provides a stable installation reference for the connection between the heat exchanger and other components of the vehicle's air conditioning system. At the same time, the edges of the inlet pressure plate 2 and outlet pressure plate 3 are aligned with the side plate 7, further improving the overall structural regularity of the heat exchanger. The connecting pipe 4 is made of flexible copper tubing, with both ends connected to the first liquid collection pipes 11 of the two sets of heat dissipation components 1 by welding. This makes the first liquid collection pipes 11 of the two sets of heat dissipation components 1 form a connected whole, ensuring that the refrigerant can flow smoothly from the first liquid collection pipe 11 of one set of heat dissipation components 1 to the first liquid collection pipe 11 of the other set of heat dissipation components 1. The outlet pipe 5 is also made of copper tubing, with one end connected to the second liquid collection pipe 12 of the other set of heat dissipation components 1. The outlet pipe 5 is placed close to the outlet pressure plate 3, and the other end of the outlet pipe 5 is connected to the refrigerant circulation pipeline of the automotive air conditioning system, used to transport the cooled liquid refrigerant to the subsequent air conditioning components. The operation process of this vehicle-mounted heating and air conditioning heat exchanger mainly revolves around the flow of refrigerant and the heat exchange process within the heat exchanger. The specific steps are as follows: Refrigerant entry: After the automotive air conditioning system is started, the high-temperature gaseous refrigerant, under the action of the compressor, enters the first liquid collector pipe 11 of one of the heat dissipation components 1 through the inlet pressure plate 2. The inlet pressure plate 2 guides and initially stabilizes the refrigerant, ensuring that the refrigerant can smoothly enter the first liquid collector pipe 11. At the same time, the side plates 7 on both sides of this heat dissipation component 1 protect the internal flat tubes 13 and fins 131, preventing external interference from affecting the heat exchange process. Refrigerant diversion and initial heat dissipation: The gaseous refrigerant entering the first liquid collector 11 is evenly distributed into several sets of flat tubes 13 of the heat dissipation assembly 1 under the diversion effect of the first liquid collector 11. During the flow of the refrigerant in the flat tubes 13, the heat it carries is transferred through the tube wall to the fins 131 set between the flat tubes 13. At the same time, the airflow generated during vehicle operation and the cooling fan of the air conditioning system accelerate the airflow on the surface of the fins 131, quickly carrying away the heat, achieving initial heat dissipation of the refrigerant, and the refrigerant temperature is initially reduced. During this process, the side plate 7 does not obstruct the airflow on the surface of the fins 131, and at the same time prevents external debris from being drawn into the gaps between the fins 131, ensuring unobstructed heat dissipation channels. The refrigerant enters the second set of heat dissipation components: After initial heat dissipation, the refrigerant flows from the flat tube 13 of this set of heat dissipation components into the corresponding second liquid collection pipe 12. Subsequently, under the action of pressure difference, the refrigerant flows through the connecting pipe 4 into the first liquid collection pipe 11 of another set of heat dissipation components 1. The flexible design of the connecting pipe 4 can accommodate the slight deformation caused by temperature changes during the operation of the two sets of heat dissipation components 1, avoiding leakage problems at the connection points. At the same time, the side plates 7 on both sides of the second set of heat dissipation components 1 also provide reliable protection for its internal components. Secondary heat dissipation and liquefaction of refrigerant: The refrigerant entering the first liquid collector 11 of another heat dissipation assembly 1 is again diverted by the liquid collector and flows into the flat tube 13 of this assembly. During this process, the refrigerant undergoes secondary heat dissipation through the flat tube 13 and fins 131. Due to the design of two heat dissipation assemblies 1, the heat dissipation area is greatly increased, the refrigerant can dissipate heat fully, the temperature is further reduced, and it finally changes from a gaseous state to a cool liquid state. The side plate 7 protects this heat dissipation assembly 1, ensuring that the secondary heat dissipation process is stable and efficient. Liquid refrigerant output: The liquefied, cool liquid refrigerant flows from the flat tube 13 of the heat dissipation component 1 into the corresponding second liquid collection pipe 12, and then flows out of the heat exchanger through the liquid outlet pipe 5 connected to the second liquid collection pipe 12, and enters the expansion valve and other subsequent components of the automotive air conditioning system, providing sufficient low-temperature liquid refrigerant for vehicle cooling and realizing the regulation of vehicle interior temperature. Beneficial effects: 1. This vehicle-mounted heating and air conditioning heat exchanger adopts a double-layer design with two sets of heat dissipation components 1, which significantly increases the heat dissipation area compared to the traditional single-set heat dissipation structure. During the refrigerant flow process, secondary heat dissipation can be achieved through the flat tubes 13 and fins 131 within the two sets of heat dissipation components 1, allowing the refrigerant to fully exchange heat with the outside environment and quickly change from a gaseous state to a cool liquid state, effectively improving the air conditioning's cooling efficiency. Even in high-temperature summer conditions or under high-load vehicle operation scenarios, it can ensure a stable output of cooling capacity from the air conditioning system, quickly reducing the interior temperature and improving the comfort of passengers. On the one hand, the heat exchanger integrates and connects the two sets of heat dissipation components 1 through the support member 6. While increasing the heat dissipation area, it does not excessively increase the overall volume, achieving a compact structural design that is more adaptable to the limited installation space inside the car. On the other hand, the side plates 7 set on both sides of the heat dissipation component 1 can provide comprehensive protection for core heat exchange components such as flat tube 13 and fins 131, avoiding damage to components caused by collisions and squeezing during assembly, transportation and use. At the same time, it enhances the overall rigidity of the heat dissipation component 1, preventing the components from deforming due to temperature changes or vibrations, and greatly improving the adaptability and reliability of the heat exchanger in the complex use environment of the car.

[0017] 2. The components of the heat exchanger are connected using reliable methods such as welding and bolting. For example, the connecting pipe 4 is welded to the first liquid collecting pipe 11, the inlet pressure plate 2 and outlet pressure plate 3 are bolted to the first liquid collecting pipe 11 and the second liquid collecting pipe 12, and the side plate 7 is spot-welded to the first liquid collecting pipe 11 and the second liquid collecting pipe 12. This ensures the stability of the connections between components and effectively avoids problems such as loosening and leakage caused by vibration during vehicle operation. Meanwhile, the first liquid collecting pipe 11 and the second liquid collecting pipe 12 are made of corrosion-resistant copper tubing, the fins 131 are made of high thermal conductivity aluminum foil, the support 6 is made of high-strength aluminum alloy, and the side plate 7 is made of high-strength cold-rolled steel plate. All components possess excellent corrosion resistance, wear resistance, and structural strength, significantly extending the service life of the heat exchanger and improving the reliability of the air conditioning system.

[0018] 3. The heat exchanger features a simple and rational structural design with clearly defined installation positions for each component. The side plate 7 is manufactured using a stamping process, and its connection to the heat dissipation assembly 1 is simple and reliable. During production and assembly, no complex assembly processes or specialized equipment are required, facilitating mass production and reducing manufacturing costs. Furthermore, during subsequent maintenance and repair, the simple and reliable connection methods between components such as the inlet pressure plate 2 and outlet pressure plate 3 and the liquid collection pipe, along with the clear structural layout, allow personnel to quickly locate and handle faults. The presence of the side plate 7 also reduces the frequency of replacement due to damage to the flat tube 13 and fins 131, further reducing maintenance time and costs.

[0019] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0020] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A vehicle-mounted heating and air conditioning heat exchanger, characterized in that: It includes a heat dissipation assembly (1), an inlet pressure plate (2), an outlet pressure plate (3), a connecting pipe (4), an outlet pipe (5), and a support member (6); the heat dissipation assembly (1) consists of two sets; the two sets of heat dissipation assemblies (1) are connected by the support member (6); the inlet pressure plate (2) and the outlet pressure plate (3) are respectively disposed at both ends of one set of heat dissipation assemblies (1); the two ends of the connecting pipe (4) are respectively connected to the two sets of heat dissipation assemblies (1); the outlet pipe (5) is connected to one end of the other set of heat dissipation assemblies (1), and the outlet pipe (5) is placed close to the outlet pressure plate (3).

2. The vehicle-mounted heating and air conditioning heat exchanger according to claim 1, characterized in that: The heat dissipation assembly (1) includes a first liquid collection pipe (11), a second liquid collection pipe (12), and a flat pipe (13); the flat pipe (13) is connected between the first liquid collection pipe (11) and the second liquid collection pipe (12); the flat pipe (13) consists of several groups arranged in a linear array; the two groups of the first liquid collection pipe (11) are connected by the support member (6); the two groups of the second liquid collection pipe (12) are connected by the support member (6).

3. The vehicle air-conditioning heat exchanger according to claim 2, characterized by: The inlet pressure plate (2) is connected to one of the first liquid collection pipes (11); the two ends of the connecting pipe (4) are respectively connected between the two sets of the first liquid collection pipes (11); the outlet pressure plate (3) is connected to one of the second liquid collection pipes (12); the outlet pipe (5) is connected to the other set of the second liquid collection pipes (12).

4. The vehicle air-conditioning heat exchanger according to claim 2, wherein: Fins (131) are provided between the flat tubes (13); the fins (131) are located on one side of the second liquid collection tube (12).

5. The vehicle air-conditioning heat exchanger according to claim 1, wherein: Side plates (7) are provided on both sides of the heat dissipation component (1).

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