Heat exchanger, air conditioning unit and vehicle

Abstract

The heat exchanger comprises a heat exchanger body and heat exchange tubes, the heat exchanger body is divided into a plurality of areas in the third direction, and a plurality of heat exchange tubes are arranged in each area; the heat exchange pipes are obliquely arranged in the first direction, and the inclination angles of the heat exchange pipes in different areas are different. The heat exchanger body is divided into a plurality of areas according to the height of the third direction, the inclination angles of the heat exchange pipes in the different areas are different in the first direction, the air inflow of the different areas of the heat exchanger is different due to different air inflow resistance, and the air inflow resistance of all the areas is reduced and uniformized by adjusting the inclination angles of the heat exchange pipes in the different areas in the first direction; and the problem of negative pressure backflow caused by the fact that the difference between the air inlet amounts of all the areas of the heat exchanger is too large is avoided, and therefore the heat exchange efficiency of the heat exchanger is improved.

Description

Technical Field

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

[0002] To meet the aesthetic requirements of automobiles, the front air intake grille is usually located below the front bumper, which is a low position. This causes a large amount of air to flow into the lower part of the heat exchanger, resulting in a smaller air intake in the upper part of the heat exchanger, and even negative pressure backflow, which reduces the heat exchange performance and efficiency of the heat exchanger.

[0003] Existing heat exchangers use inclined heat exchange tubes to reduce air inlet resistance in the upper region and increase the air intake volume above the heat exchanger. However, since the air intake velocity varies at different heights of the heat exchanger, if all heat exchange tubes in the heat exchanger are inclined at the same angle, although the air intake volume in the upper region will increase, the air intake volume in the lower region will decrease. This cannot guarantee the uniformity of air intake volume in different regions of the heat exchanger, and therefore the heat exchange efficiency of the heat exchanger cannot be effectively improved. Utility Model Content

[0004] To address the technical problem of uneven air intake in different areas of the heat exchanger, resulting in low heat exchange efficiency, this utility model provides a heat exchanger, an air conditioning unit, and a vehicle.

[0005] To achieve the above objectives, this utility model provides a heat exchanger, including a heat exchanger body and heat exchange tubes. The heat exchanger body is divided into multiple regions along a third direction, and multiple heat exchange tubes are provided in each region. The heat exchange tubes are inclined along a first direction, and the inclination angle of the heat exchange tubes is different in different regions.

[0006] Furthermore, the heat exchange tubes located in the same region have the same tilt angle, while the tilt angle of the heat exchange tubes located in different regions increases with the increase of the height of the region in the third direction.

[0007] Furthermore, a spacing is provided between adjacent heat exchange tubes, and the spacing between adjacent heat exchange tubes in the same area is the same.

[0008] Furthermore, the heat exchanger also includes a shaped tube, which includes a first side and a second side. The first side and the second side are arranged opposite to each other along a third direction. The shaped tube is disposed between heat exchange tubes in adjacent regions. The first side and its adjacent heat exchange tube have the same inclination angle along a first direction, and the second side and its adjacent heat exchange tube have the same inclination angle along the first direction.

[0009] Furthermore, the distance between the first side and its adjacent heat exchange tube is the same as the distance between the second side and its adjacent heat exchange tube.

[0010] Furthermore, the flow area of ​​the shaped tube is the same as that of the heat exchange tube.

[0011] Furthermore, the heat exchanger body includes a main board, which is disposed opposite to both ends of the heat exchange tube along the second direction. The main board has a plurality of through holes that are inclined along the first direction, and the heat exchange tube is disposed in the through holes.

[0012] Furthermore, the heat exchanger body also includes side plates, which are disposed at both ends of the main body along a third direction. The inclination angle of the side wall of the side plate near the heat exchange tube is the same as the inclination angle of the adjacent heat exchange tube.

[0013] Another objective of this embodiment is to provide an air conditioning unit that is equipped with the aforementioned heat exchanger.

[0014] Another objective of this embodiment is to provide a vehicle equipped with the aforementioned heat exchanger or air conditioning unit.

[0015] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0016] (1) The heat exchanger body is divided into multiple regions according to the height of the third direction. The inclination angle of the heat exchange tubes in different regions along the first direction is different. The air intake volume of different regions of the heat exchanger is different due to the different air intake resistance. The air intake direction of the heat exchanger is the first direction. By adjusting the inclination angle of the heat exchange tubes in different regions along the first direction, the air intake resistance of each region is reduced and uniform, thereby ensuring the uniformity of the overall air intake volume of the heat exchanger and avoiding the problem of negative pressure backflow caused by the large difference in air intake volume of each region of the heat exchanger, thereby improving the heat exchange efficiency of the heat exchanger.

[0017] (2) A special-shaped tube is set between heat exchange tubes in different areas. The special-shaped tube includes a first side and a second side. The first side has the same inclination angle as the adjacent heat exchange tube, and the second side has the same inclination angle as the adjacent heat exchange tube. When the heat exchanger is installed, fins are set between the adjacent heat exchange tubes and between the heat exchange tubes and the special-shaped tube. The first side and the second side of the special-shaped tube have the same inclination angle as the adjacent heat exchange tube. There is no need to change the fin structure to adapt to heat exchange tubes with different inclination angles, which is beneficial to the assembly and production of the heat exchanger.

[0018] (3) The flow area of ​​the heat exchange tubes and the flow area of ​​the special-shaped tubes in different regions are the same, which further ensures the uniformity of the air intake between different regions and at the connection points of different regions. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a front view of the structure of the heat exchanger of this utility model;

[0021] Figure 2 This is a partial schematic diagram of the middle part of the heat exchanger of this utility model;

[0022] Figure 3 This is an isometric view of the heat exchanger of this utility model;

[0023] Figure 4 This is a schematic diagram of the airflow in the heat exchanger of this utility model.

[0024] Figure 5 This is a partial schematic diagram of the upper part of the heat exchanger of this utility model.

[0025] Explanation of reference numerals in the accompanying drawings: Heat exchanger body - 1; Main plate - 11; Through hole - 11-1; Side plate - 12; Heat exchange tube - 2; Shaped tube - 3; First side - 31; Second side - 32; First region - A; Second region - B; Third region - C; First direction - X; Second direction - Y; Third direction - Z. Detailed Implementation

[0026] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0027] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0029] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, deviating from the general scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0030] Furthermore, in the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," or "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] Unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" in this utility model should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integrated connections; similarly, they can refer to mechanical connections, electrical connections, or direct connections, or indirect connections through an intermediate medium, or internal connections between 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.

[0032] Example 1

[0033] like Figures 1-5 As shown in the figure, a heat exchanger provided in this embodiment of the present invention includes a heat exchanger body 1 and heat exchange tubes 2. The heat exchanger body 1 is divided into multiple regions along a third direction, and multiple heat exchange tubes 2 are arranged in each region. The heat exchange tubes 2 are inclined along a first direction, wherein the first direction is X, which is the air inlet direction of the heat exchanger, the second direction is Y, which is the extension direction of the heat exchanger, and the third direction is Z, which is the vertical direction. The first direction, the second direction, and the third direction are perpendicular to each other. The inclination angle of the heat exchange tubes 2 is different in different regions. In this embodiment, the heat exchange tubes 2 are set as flat tubes. Of course, they are not limited to flat tubes. This embodiment only uses flat tubes as an example for explanation. Figure 3 and 4The heat exchanger body 1 is divided into three regions from top to bottom in a third direction: region A, region B, and region C. Multiple heat exchange tubes 2 are installed in each of these regions, with different inclination angles. As the air inlet position varies, the airflow angle on the heat exchanger surface also varies, resulting in different airflow velocities and resistances in regions A, B, and C. In this embodiment, the inclination angle of the heat exchange tubes 2 in different regions can be adjusted according to the airflow angle within their respective regions. By setting different inclination angles for the heat exchange tubes 2 along the first direction in different regions, the airflow resistance in each region is uniform, ensuring consistent airflow velocity in each region. This achieves overall uniformity of airflow into the heat exchanger, thereby improving its heat exchange capacity and efficiency.

[0034] It should be noted that the division of the heat exchanger body 1 into regions can be analyzed through three-dimensional fluid dynamics simulation to determine whether the wind speed distribution on the heat exchanger surface is uniform. Based on the heat exchanger usage requirements and process feasibility, the number of regions, the size of different regions, and the uniformity of the regions can be adjusted in real time. This embodiment does not limit the division of the heat exchanger body 1 into regions. Furthermore, the inclination angle of the heat exchange tubes 2 in different regions can be reconfirmed through three-dimensional simulation to ensure that the inlet wind speed on the heat exchanger surface is uniform and to improve the heat exchange efficiency of the heat exchanger.

[0035] In one embodiment, refer to Figures 1-4 The heat exchange tubes 2 located in the same region have the same tilt angle. The tilt angle of the heat exchange tubes 2 located in different regions increases with the increase of the height of the region in the third direction. In the embodiment, the air inlet position of the heat exchanger is located at the bottom. Therefore, the higher the height of the region in the third direction, the larger the airflow angle of the air inlet in that region. That is, the airflow velocity in the first region A of the heat exchanger body 1 is the smallest, the airflow velocity in the second region B is medium, and the airflow velocity in the third region C is the largest. In order to adapt to the airflow angle on the surface of the heat exchanger, the tilt angle of the heat exchange tubes 2 in the first region A with the smallest airflow velocity is set to the largest, the tilt angle of the heat exchange tubes 2 in the second region B is medium, and the tilt angle of the heat exchange tubes 2 in the third region C is the smallest, so that the airflow in each region is consistent and the uniformity of the overall airflow in the heat exchanger is guaranteed.

[0036] As a preferred option, when the air inlet of the heat exchanger is at the bottom, the air inlet direction in the third region C is horizontal. Therefore, the heat exchange tube 2 in the third region C of the heat exchanger body can be set to be placed horizontally, which reduces the air inlet resistance and ensures the air inlet flow rate of the third region C.

[0037] In one embodiment, a gap is provided between adjacent heat exchange tubes 2. The gap between adjacent heat exchange tubes 2 in the same area is the same. Since the height difference between heat exchange tubes 2 in the same area is small, the tilt angle of heat exchange tubes 2 in the same area is the same, and the gap between heat exchange tubes 2 in the same area is also set to be the same, the airflow velocity and airflow resistance of heat exchanger surfaces at different heights in the same area are not much different, and problems such as negative pressure convergence will not be caused, thus ensuring the uniformity of airflow on the heat exchanger surface to a certain extent.

[0038] In one embodiment, refer to Figure 1 and 2 The heat exchanger also includes a shaped tube 3, which includes a first side 31 and a second side 32. The shaped tube 3 is disposed between heat exchange tubes 2 in adjacent areas. The first side 31 and the second side 32 are arranged opposite each other in the vertical direction. The first side 31 and its adjacent heat exchange tube 2 have the same inclination angle in the first direction, and the second side 32 and its adjacent heat exchange tube 2 have the same inclination angle in the first direction. In the embodiment, the shaped tube 3 is disposed between the first area A and the second area B. The side of the shaped tube 3 with a higher height in the third direction is the first side 31, and the side with a lower height is the second side 32. The inclination angle of the first side 31 is the same as that of the heat exchange tube 2 in the first area A, and the inclination angle of the second side 32 is the same as that of the heat exchange tube 2 in the second area B. This avoids the connection position of different areas where the change in the inclination angle of the heat exchange tube 2 causes the spacing between the heat exchange tubes 2 in different areas to be too large, which would increase the air inlet resistance.

[0039] It should be noted that in order to increase the heat exchange area and improve the heat exchange efficiency in the heat exchanger, fins are set between the heat exchange tubes 2. When two adjacent heat exchange tubes 2 belong to different regions, their tilt angles in the first direction are different, resulting in inconsistent spacing between them. Conventional fins cannot be used for installation. In this embodiment, a special-shaped tube 3 is set between the heat exchange tubes 2 in different regions, and the tilt angles of the first side 31 and the second side 32 are the same as those of the adjacent heat exchange tubes 2. This makes the spacing between the first side 31 and the second side 32 and the adjacent heat exchange tubes 2 the same as the spacing between the heat exchange tubes 2 in the adjacent regions. Therefore, conventional fins can still be used between the heat exchange tubes 2 during installation. The installation process is simple and facilitates fin assembly.

[0040] In one embodiment, the distance between the first side 31 and its adjacent heat exchange tube 2 is the same as the distance between the second side 32 and its adjacent heat exchange tube 2. Therefore, fins of the same specification can be used for installation in different areas, further reducing installation costs.

[0041] In one embodiment, the flow area of ​​the shaped tube 3 is the same as that of the heat exchange tube 2. In another embodiment, the flow area of ​​the heat exchange tube 2 is the same in different regions. Preferably, the shape and size of the heat exchange tube 2 are the same in different regions, so that the heat exchange area is the same at each position of the heat exchanger, thus ensuring the uniformity of heat exchange of the entire heat exchanger.

[0042] In one embodiment, refer to Figure 1 and 2 The heat exchanger body 1 also includes a main board 11, which is disposed opposite to the two ends of the heat exchange tube 2 along the second direction. The main board 11 has a plurality of through holes 11-1 that are inclined along the first direction. The heat exchange tube 2 is disposed in the through holes 11-1. Preferably, the cross-sectional shape of the through hole 11-1 in the third direction is adapted to the cross-sectional shape of the heat exchange tube 2 in the third direction. During installation, the two ends of the heat exchange tube 2 along the second direction are inserted into the through holes 11-1 on the main board 11, thereby realizing the limited installation of the heat exchange tube 2. The installation method is simple and easy to implement.

[0043] In one embodiment, refer to Figure 1 and 5 The heat exchanger body 1 also includes a side plate 12, which extends along a second direction and is disposed at both ends of the main plate 11 along a third direction. The side wall of the side plate 12 near the heat exchange tube 2 is an inclined structure that is inclined along a first direction, with the inclination angle being the same as that of the adjacent heat exchange tube 2. The main plate 11 is disposed at both ends of the heat exchange tube 2 along the second direction along a third direction, and the side plate 12 extends along the second direction and is disposed at both ends of the main plate 11 along the third direction. This indicates that the side plate 12 is disposed on both sides of the heat exchange tube 2 with the highest and lowest heights. Furthermore, the side wall of the side plate 12 near the heat exchange tube 2 has an inclination angle that is the same as that of the adjacent heat exchange tube 2. Therefore, the heat exchange tube 2 is limited in the third direction by the side plate 12. By punching holes in the main plate 11 of the heat exchanger body 1 and inclining the side plate 12, only the angles of the heat exchange tube 2 and the fins need to be adjusted during heat exchanger installation. The original specifications of the heat exchange tube 2 and the fins can be maintained unchanged without increasing material costs and process costs.

[0044] The heat exchanger proposed in this embodiment works as follows: First, multiple through holes 11-1 inclined in a first direction are opened on the main plate 11. The two ends of the heat exchange tube 2 are connected to the through holes 11-1 on the two main plates 11. Then, the side plate 12 is installed on both ends of the main plate 11 in a third direction. Since the inclination angle of the side plate 12 and the side wall adjacent to the heat exchange tube 2 in the first direction is the same as the inclination angle of the heat exchange tube 2 in the first direction, the heat exchange tube 2 is positioned. During the installation of the heat exchange tube 2, the heat exchanger body 1 is divided into three regions from high to low according to the height of the heat exchanger body 1 in the third direction: a first region A, a second region B, and a third region C. The inclination angle of the heat exchange tube 2 in the first region A is a, the inclination angle of the heat exchange tube 2 in the first direction in the second region B is b, and the inclination angle of the heat exchange tube 2 in the third region C is c. The air inlet of the heat exchanger... When the position is low, the air intake is less in the higher regions. Therefore, the tilt angle of the heat exchange tube 2 is set to be greater than angle a, which is greater than angle c, thereby reducing the air intake resistance in the higher regions and increasing the air intake in the higher regions. This ensures the overall air intake uniformity of the heat exchanger and improves the heat exchange performance and efficiency of the heat exchanger. A special-shaped tube 3 is set between the heat exchange tubes 2 in the first region A, the second region B, and the third region C. Fins are set between the heat exchange tubes 2 and between the heat exchange tubes 2 and the special-shaped tube 3. The first side 31 and the second side 32 are tilted at the same angle as the adjacent heat exchange tubes 2 in the first direction. Therefore, while keeping the original heat exchange tubes 2 and fin specifications unchanged, it is only necessary to open through holes 11-1 of a specific angle on the main board 11 and side plates 12 with matching side wall angles to limit the heat exchange tubes 2 and achieve the target angle. The heat exchanger assembly process is simple and the cost is low.

[0045] Example 2

[0046] Unlike the above embodiments, this embodiment provides an air conditioning unit equipped with the aforementioned heat exchanger. The heat exchanger in this embodiment is exactly the same as the aforementioned heat exchanger, and the details regarding the heat exchanger will not be repeated here.

[0047] Since air conditioning units include heat exchangers, by setting different tilt angles in different areas to even out the air intake resistance in each area, the air intake velocity in each area can be kept consistent, thus achieving uniform air intake for the entire heat exchanger and improving its heat exchange capacity and efficiency.

[0048] Example 3

[0049] Unlike the above embodiments, this embodiment provides a vehicle equipped with the aforementioned heat exchanger or air conditioning unit. The heat exchanger and air conditioning unit in this embodiment are exactly the same as those described above, and will not be described again in this embodiment.

[0050] Since the vehicle includes a heat exchanger, by setting different tilt angles in different areas to even out the air intake resistance in each area, the air intake velocity in each area can be kept consistent, thus achieving uniform air intake for the entire heat exchanger and improving the heat exchanger's heat exchange capacity and efficiency.

[0051] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention. The scope of the present invention is determined by the scope of the appended claims.

Claims

1. A heat exchanger, characterized in that, It includes a heat exchanger body (1) and heat exchange tubes (2). The heat exchanger body (1) is divided into multiple regions along a third direction, and multiple heat exchange tubes (2) are provided in each region. The heat exchange tube (2) is inclined along the first direction, and the inclination angle of the heat exchange tube (2) is different in different regions.

2. The heat exchanger according to claim 1, characterized in that, The heat exchange tubes (2) located in the same region have the same tilt angle, while the tilt angle of the heat exchange tubes (2) located in different regions increases with the increase of the height of the region in the third direction.

3. The heat exchanger according to claim 1, characterized in that, The adjacent heat exchange tubes (2) are spaced apart, and the spacing between adjacent heat exchange tubes (2) in the same area is the same.

4. The heat exchanger according to claim 1, characterized in that, The heat exchanger also includes a shaped tube (3), which includes a first side (31) and a second side (32). The first side (31) and the second side (32) are arranged opposite each other along a third direction. The shaped tube (3) is arranged between heat exchange tubes (2) in adjacent regions. The first side (31) and its adjacent heat exchange tube (2) have the same inclination angle along a first direction. The second side (32) and its adjacent heat exchange tube (2) have the same inclination angle along a first direction.

5. The heat exchanger according to claim 4, characterized in that, The distance between the first side (31) and its adjacent heat exchange tube (2) is the same as the distance between the second side (32) and its adjacent heat exchange tube (2).

6. The heat exchanger according to claim 4, characterized in that, The flow area of ​​the shaped tube (3) is the same as that of the heat exchange tube (2).

7. The heat exchanger according to any one of claims 1-6, characterized in that, The heat exchanger body (1) includes a main board (11), which is disposed opposite to the two ends of the heat exchange tube (2) along the second direction. The main board (11) has a plurality of through holes (11-1) that are inclined along the first direction, and the heat exchange tube (2) is disposed in the through holes (11-1).

8. The heat exchanger according to claim 7, characterized in that, The heat exchanger body (1) also includes a side plate (12), which is disposed at both ends of the main body (11) along a third direction. The inclination angle of the side wall of the side plate (12) near the heat exchange tube (2) is the same as the inclination angle of the adjacent heat exchange tube (2).

9. An air conditioning unit, characterized in that, Includes the heat exchanger as described in any one of claims 1 to 8.

10. A vehicle, characterized in that, It includes the heat exchanger as described in any one of claims 1 to 8 or the air conditioning unit as described in claim 9.

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