A small car air heating and air conditioning heat exchange device

Abstract

The utility model discloses a small -size car warm air conditioning heat exchange device, including both sides symmetrical installation board, be equipped with a plurality of upper flat tube and lower flat tube between both sides installation board, the flat tube between upper flat tube and lower flat tube all is equipped with the heat exchange fin of interval distribution, upper heat exchange flow channel is connected with in the upper flat tube both sides, lower heat exchange flow channel is connected with in the lower flat tube both sides, one side lower heat exchange flow channel bottom symmetry is equipped with for receiving high temperature high pressure gaseous refrigerant and for discharging liquid refrigerant liquid outlet, the other side lower heat exchange flow channel bottom is connected with for filtering liquid refrigerant's liquid storage dryer, the utility model discloses, has the characteristics of small volume and big heat exchange area.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, specifically a small car heating and air conditioning heat exchange device. Background Technology

[0002] The heat exchanger is a key component in a car's heating and air conditioning system that enables heat exchange. It regulates the temperature inside the vehicle by transferring heat between the internal flowing medium and the outside air, providing a comfortable driving and riding environment for passengers.

[0003] Currently, tube-and-plate heat exchangers are a common type of heat exchange device. These heat exchangers mainly consist of round tubes and heat exchange plates. The round tubes are responsible for transporting the heat exchange medium, while the heat exchange plates are used to increase the contact area with the air. However, the round tubes will form more gaps when arranged, resulting in a low space utilization rate per unit volume. In order to ensure sufficient heat exchange area to meet the heat exchange requirements of the system, it is necessary to increase the number and length of the round tubes, which makes the overall volume of the heat exchanger larger.

[0004] Therefore, it is necessary to design a small car heating and air conditioning heat exchanger with a small size and a large heat exchange area. Utility Model Content

[0005] The purpose of this invention is to provide a small car heating and air conditioning heat exchange device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a small car heating air conditioning heat exchange device, including mounting plates symmetrically arranged on both sides, and a plurality of upper flat tubes and lower flat tubes arranged between the mounting plates on both sides, and heat exchange fins are arranged at intervals between the flat tubes of the upper flat tubes and lower flat tubes.

[0007] The upper flat tube is connected to upper heat exchange channels on both sides, and the lower flat tube is connected to lower heat exchange channels on both sides. One side of the lower heat exchange channel has an inlet for receiving high-temperature and high-pressure gaseous refrigerant and an outlet for discharging liquid refrigerant at its bottom symmetrically arranged. The other side of the lower heat exchange channel has a liquid storage dryer connected to its bottom for filtering liquid refrigerant.

[0008] According to the above technical solution, the lower flat tube includes a first lower flat tube group, a second lower flat tube group, and a third lower flat tube group. The first lower flat tube group, the second lower flat tube group, and the third lower flat tube group are sequentially distributed between the air inlet and the liquid outlet, and the number of flat tubes in the first lower flat tube group, the second lower flat tube group, and the third lower flat tube group decreases sequentially.

[0009] According to the above technical solution, a first lower baffle and a second lower baffle are provided in the lower heat exchange channels on both sides. The first lower baffle is separated between the first lower flat tube group and the second lower flat tube group, and the second lower baffle is separated between the second lower flat tube group and the third lower flat tube group.

[0010] According to the above technical solution, the upper flat tube includes a first upper flat tube group, a second upper flat tube group and a third upper flat tube group, and the number of flat tubes in the first upper flat tube group, the second upper flat tube group and the third upper flat tube group decreases sequentially.

[0011] The upper heat exchange channel near the liquid storage dryer is provided with a first upper baffle between the first upper flat tube group and the second upper flat tube group, and the upper heat exchange channel near the liquid outlet is provided with a second upper baffle between the second upper flat tube group and the third upper flat tube group.

[0012] According to the above technical solution, a corresponding filter inlet and filter outlet are provided between the liquid storage dryer and the lower heat exchange channel. The liquid storage dryer is equipped with a desiccant for absorbing excess moisture in the refrigerant and a filter screen for filtering impurities in the refrigerant.

[0013] According to the above technical solution, an upper sealing plate and a lower sealing plate are respectively provided on both sides of the upper heat exchange channel and the lower heat exchange channel.

[0014] According to the above technical solution, a number of first flow holes are correspondingly opened between the upper heat exchange channel and the lower heat exchange channel on the side near the liquid storage dryer, and a second flow hole is correspondingly opened between the upper heat exchange channel and the lower heat exchange channel on the side near the liquid outlet.

[0015] According to the above technical solution, the outer sides of the upper heat exchange channels on both sides are provided with mounting bases for connecting with external structures.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are:

[0017] (1) By setting up symmetrically distributed mounting plates in conjunction with upper flat tubes, lower flat tubes and spaced heat exchange fins, a compact design of the structure is achieved in a limited space, reducing the overall volume of the device and making it better suited to the limited installation space of small cars. Secondly, the flat tube groups with decreasing numbers in sequence, combined with the corresponding baffle design, can accurately guide the flow path of the refrigerant. This structure not only prolongs the contact time between the refrigerant and the heat exchange fins, but also improves the utilization rate of the heat exchange area, thereby significantly enhancing the heat exchange efficiency of the device and providing warm air to the car more quickly.

[0018] (2) By installing a liquid dryer, which is equipped with desiccant and filter screen, the liquid refrigerant can be effectively filtered and dried to remove harmful substances such as moisture and impurities contained in the refrigerant, thus avoiding these impurities from corroding or clogging other components of the air conditioning system and ensuring the stable operation of the system. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is a schematic diagram of the structural composition of this utility model;

[0021] Figure 2 This is a structurally disassembled left-corner axonometric view of this utility model;

[0022] Figure 3 This is the right-hand axonometric view of the disassembled structure of this utility model;

[0023] Figure 4 This is an exploded view of the liquid storage dryer structure of this utility model;

[0024] In the diagram: 10. Mounting plate; 20. Upper flat tube; 21. First upper flat tube assembly; 22. Second upper flat tube assembly; 23. Third upper flat tube assembly; 30. Lower flat tube; 31. First lower flat tube assembly; 32. Second lower flat tube assembly; 33. Third lower flat tube assembly; 40. Heat exchange fins; 50. Upper heat exchange channel; 51. First upper baffle; 52. Second upper baffle; 53. Upper sealing plate; 54. Mounting base; 60. Lower heat exchange channel; 61. Air inlet; 62. Liquid outlet; 63. First lower baffle; 64. Second lower baffle; 65. Lower sealing plate; 66. First flow hole; 67. Second flow hole; 70. Liquid storage dryer; 71. Filter inlet; 72. Filter outlet; 73. Desiccant; 74. Filter screen. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0026] This utility model provides a technical solution: a small car heating and air conditioning heat exchange device, including mounting plates 10 symmetrically arranged on both sides, with a plurality of upper flat tubes 20 and lower flat tubes 30 arranged between the mounting plates 10 on both sides, and heat exchange fins 40 spaced apart between the flat tubes of the upper flat tubes 20 and lower flat tubes 30; the upper flat tubes 20 and lower flat tubes 30 adopt a flat tube structure design, which allows for the arrangement of more pipes in the same space compared to traditional round tubes, and the flat shape of the flat tubes can reduce the thickness of the overall structure, greatly reducing the volume of the device, and the symmetrical mounting plates 10 on both sides provide stable support for the flat tubes and heat exchange fins 40.

[0027] The upper flat tube 20 is connected to upper heat exchange channels 50 on both sides. The upper heat exchange channels 50 on both sides are fixedly connected to mounting seats 54 for connecting with external structures. The upper heat exchange channels 50 on both sides can be directly matched with other fixed structures of the car body or air conditioning system through the mounting seats 54. There is no need to design additional complex connection components. During installation, the mounting seats 54 can be fixed to the external structure by bolts and other fasteners to quickly complete the positioning and installation of the heat exchange device. The lower flat tube 30 is connected to two lower heat exchange channels 60. One side of the lower heat exchange channel 60 has an inlet 61 for receiving high-temperature and high-pressure gaseous refrigerant and an outlet 62 for discharging liquid refrigerant at its bottom. The other side of the lower heat exchange channel 60 is connected to a liquid receiver-dryer 70 for filtering liquid refrigerant at its bottom. The heat exchange fins 40 spaced apart between the flat tubes increase the heat exchange area on a small volume basis, ensuring that the high-temperature and high-pressure gaseous refrigerant can fully contact the fins and release heat after entering from the inlet 61, and quickly achieve heat exchange with the air to provide warm air. The condensed liquid refrigerant flows through the liquid receiver-dryer 70 for filtration and is discharged from the outlet 62. Upper heat exchange channel 50 and lower heat exchange channel 60 are respectively provided with upper sealing plate 53 and lower sealing plate 65 on both sides; upper sealing plate 53 and lower sealing plate 65 are respectively provided on both sides of upper heat exchange channel 50 and lower heat exchange channel 60, which can effectively block the openings on the side of the channel, form a closed fluid channel, and ensure that the refrigerant circulates in an orderly manner in the flat tube and channel according to the preset path.

[0028] The lower flat tube 30 includes a first lower flat tube group 31, a second lower flat tube group 32, and a third lower flat tube group 33. The first lower flat tube group 31, the second lower flat tube group 32, and the third lower flat tube group 33 are sequentially distributed between the air inlet 61 and the liquid outlet 62, and the number of flat tubes in the first lower flat tube group 31, the second lower flat tube group 32, and the third lower flat tube group 33 decreases sequentially. A first lower baffle 63 and a second lower baffle 64 are provided in both lower heat exchange channels 60. The first lower baffle 63 separates the first lower flat tube group 31 and the second lower flat tube group 32, and the second lower baffle 64 separates the second lower flat tube group 32. Between the lower flat tube group 30 and the third lower flat tube group 33; the lower flat tubes 30 adopt a grouped design with the number of flat tubes decreasing sequentially. With the blocking effect of the first lower baffle 63 and the second lower baffle 64, the refrigerant can be guided to flow along a preset path. When the high-temperature and high-pressure gaseous refrigerant enters from the inlet 61, it first diffuses fully in the first lower flat tube group 31, and then flows to the second lower flat tube group 32 and the third lower flat tube group 33 after being blocked and redirected by the first lower baffle 63 and the second lower baffle 64. During the entire flow process, the refrigerant and the heat exchange fins 40 continuously exchange heat, maximizing the heat exchange efficiency within a limited size.

[0029] The upper flat tube 20 includes a first upper flat tube group 21, a second upper flat tube group 22, and a third upper flat tube group 23, with the number of flat tubes in the first upper flat tube group 21, the second upper flat tube group 22, and the third upper flat tube group 23 decreasing sequentially. The upper heat exchange channel 50 near the liquid storage dryer 70 is provided with a first upper baffle 51 between the first upper flat tube group 21 and the second upper flat tube group 22, and the upper heat exchange channel 50 near the liquid outlet 62 is provided with a second upper baffle 52 between the second upper flat tube group 22 and the third upper flat tube group 23. The grouping design of the upper flat tube 20 and the lower flat tube 30 forms a coordinated cooperation. The first upper baffle 51 and the second upper baffle 52 corresponding to the positions of the first upper flat tube group 21, the second upper flat tube group 22, and the third upper flat tube group 23 can guide the refrigerant to form an orderly flow path in the upper flat tube, ensuring that the refrigerant and the heat exchange fins 40 are in full contact for heat exchange, thereby improving the overall heat exchange effect.

[0030] The liquid receiver dryer 70 and the lower heat exchange channel 60 are provided with corresponding filter inlet 71 and filter outlet 72. The liquid receiver dryer 70 is equipped with a desiccant 73 for absorbing excess moisture in the refrigerant and a filter screen 74 for filtering impurities in the refrigerant. The filter inlet 71 and the filter outlet 72 form a precise refrigerant filtration channel, which allows the liquid refrigerant flowing out of the lower heat exchange channel 60 to enter the liquid receiver dryer 70 in a directional manner. The filter screen 74 installed inside can effectively intercept impurities in the refrigerant, preventing impurities from entering the compressor and other core components with the refrigerant circulation, thus preventing component wear or blockage. The desiccant 73 can absorb excess moisture in the refrigerant, preventing moisture from freezing in the system and causing pipeline blockage.

[0031] A plurality of first flow holes 66 are correspondingly opened between the upper heat exchange channel 50 and the lower heat exchange channel 60 near the liquid outlet 62. A second flow hole 67 is correspondingly opened between the upper heat exchange channel 50 and the lower heat exchange channel 60 near the liquid outlet 62. The corresponding opening of the first flow holes 66 and the second flow holes 67 provides a precise channel for the refrigerant to flow between the upper flat tube 20 and the lower flat tube 30, forming a complete circulation loop, ensuring that the refrigerant fully flows through all heat exchange areas, and improving the thoroughness of heat exchange.

[0032] Working principle: After the high temperature and high pressure gaseous refrigerant enters from the inlet 61 of the lower heat exchange channel 60, it first flows into the first lower flat tube group 31 of the lower flat tube 30, where it diffuses fully and comes into full contact with the spaced heat exchange fins 40 and releases heat, and begins to condense gradually.

[0033] Subsequently, under the combined blocking effect of the first lower partition 63 and the first upper partition 51, the refrigerant enters the first upper flat tube group 21 of the upper flat tube 20 through the first flow hole 66, and flows out after continuous heat exchange with the heat exchange fins 40; then, guided by the second upper partition 52, the refrigerant turns and flows into the second upper flat tube group 22 to continue the heat exchange process; after that, under the combined blocking effect of the first upper partition 51 and the upper sealing plate 53 on the opposite side, the refrigerant turns again and flows into the third upper flat tube group 23, where it completes further heat exchange before flowing out;

[0034] Next, guided by the cooperation of the second upper partition 52 and the upper sealing plate 53 on the opposite side, the refrigerant flows into the second lower flat tube group 32 of the lower flat tube 30 through the second flow hole 67. After continuous heat exchange, it flows to the filter inlet 71. The refrigerant that enters the liquid receiver dryer 70 through the filter inlet 71 passes through the internal filter screen 74 to intercept impurities. After the desiccant 73 absorbs the excess moisture in the refrigerant, it flows out from the filter outlet 72 and enters the third lower flat tube group 33, completing the final heat exchange process.

[0035] Finally, the refrigerant, which has completely condensed into liquid, is discharged from the liquid outlet 62 and enters the next cycle of the air conditioning system.

[0036] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientation structure and operation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0037] In the description of this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this utility model, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. Moreover, those skilled in the art can combine different embodiments or examples and features of different embodiments or examples described in this utility model without contradiction.

[0038] 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 small car heating and air conditioning heat exchange device, comprising mounting plates (10) symmetrically arranged on both sides, with a plurality of upper flat tubes (20) and lower flat tubes (30) provided between the mounting plates (10) on both sides, and heat exchange fins (40) spaced apart between the flat tubes of the upper flat tubes (20) and the lower flat tubes (30). characterized in that The upper flat tube (20) is connected to an upper heat exchange channel (50) on both sides, and the lower flat tube (30) is connected to a lower heat exchange channel (60) on both sides. One side of the lower heat exchange channel (60) is symmetrically provided with an inlet (61) for receiving high-temperature and high-pressure gaseous refrigerant and an outlet (62) for discharging liquid refrigerant at the bottom. The other side of the lower heat exchange channel (60) is connected to a liquid storage dryer (70) for filtering liquid refrigerant at the bottom.

2. A heat exchange device for a small car air conditioner according to claim 1, wherein: The lower flat tube (30) includes a first lower flat tube group (31), a second lower flat tube group (32), and a third lower flat tube group (33). The first lower flat tube group (31), the second lower flat tube group (32), and the third lower flat tube group (33) are distributed between the air inlet (61) and the liquid outlet (62), and the number of flat tubes in the first lower flat tube group (31), the second lower flat tube group (32), and the third lower flat tube group (33) decreases sequentially.

3. A compact automobile air heating and air conditioning heat exchanger according to claim 2, characterized in that: Both sides of the lower heat exchange channel (60) are provided with a first lower baffle (63) and a second lower baffle (64). The first lower baffle (63) is separated between the first lower flat tube group (31) and the second lower flat tube group (32), and the second lower baffle (64) is separated between the second lower flat tube group (32) and the third lower flat tube group (33).

4. A compact automobile air heating and air conditioning heat exchanger according to claim 1, characterized in that: The upper flat tube (20) includes a first upper flat tube group (21), a second upper flat tube group (22) and a third upper flat tube group (23), wherein the number of flat tubes in the first upper flat tube group (21), the second upper flat tube group (22) and the third upper flat tube group (23) decreases sequentially. The upper heat exchange channel (50) near the liquid storage dryer (70) has a first upper baffle (51) between the first upper flat tube group (21) and the second upper flat tube group (22), and the upper heat exchange channel (50) near the liquid outlet (62) has a second upper baffle (52) between the second upper flat tube group (22) and the third upper flat tube group (23).

5. A compact automobile air heating and air conditioning heat exchanger according to claim 1, characterized in that: The liquid storage dryer (70) and the lower heat exchange channel (60) are provided with a corresponding filter inlet (71) and filter outlet (72). The liquid storage dryer (70) is provided with a desiccant (73) for absorbing excess moisture in the refrigerant and a filter screen (74) for filtering impurities in the refrigerant.

6. A small car heater / air conditioning heat exchanger according to claim 1, characterized in that: The upper heat exchange channel (50) and the lower heat exchange channel (60) are respectively provided with an upper sealing plate (53) and a lower sealing plate (65) on both sides.

7. A small car heater / air conditioning heat exchange device according to claim 1, characterized in that: A number of first flow holes (66) are provided between the upper heat exchange channel (50) and the lower heat exchange channel (60) on the side near the liquid storage dryer (70), and a second flow hole (67) is provided between the upper heat exchange channel (50) and the lower heat exchange channel (60) on the side near the liquid outlet (62).

8. A small car heater / air conditioning heat exchanger according to claim 1, characterized in that: Both sides of the upper heat exchange channel (50) are provided with mounting bases (54) for connecting with external structures.

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