Heat exchanger

Abstract

The heat exchanger comprises an inner exchanger, an outer exchanger and a baffle, the inner exchanger and the outer exchanger are arranged in a sleeved mode, the baffle is packaged at the rear end of the outer exchanger, the inner exchanger comprises an inner circular ring and a plurality of inner cooling fins, the inner circular ring is in a hollow cylinder shape and surrounds and limits a ventilation pipeline I on the inner side of the hollow cylinder wall, and the inner cooling fins are distributed and formed on the peripheral side of the hollow cylinder wall; the outer exchanger comprises an outer circular ring which is in a hollow cylinder shape and surrounds and limits the ventilation pipeline II on the inner side of the hollow cylinder wall, a plurality of outer heat dissipation main fins distributed and formed on the outer peripheral side of the hollow cylinder wall and positioning grooves formed in the inner peripheral side of the hollow cylinder wall, and the positioning grooves are used for being matched with the corresponding inner heat dissipation fins; the outer exchanger is arranged on the outer side of the inner exchanger in a sleeving mode, so that the air outlet end, stretching into the inner side of the hollow cylinder wall of the outer exchanger, of the inner exchanger is a preset distance away from the rear end of the outer exchanger to correspondingly form an air return area, and an air outlet area is formed between the outer peripheral side of the inner exchanger and the inner peripheral side of the outer exchanger which are overlapped. Therefore, forming difficulty can be reduced, and cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of aluminum alloy profiles, and particularly relates to a heat exchanger. Background Art

[0002] The temperature of the underground is relatively constant. In summer, it is only a dozen degrees, which has high utilization value. However, it is not only restricted by geographical conditions such as drilling and burying pipes and underground installation. At present, the existing heat exchangers themselves have problems such as complex structure, difficult forming, and high price, and there is still a need for improvement. Content of the Utility Model

[0003] In order to solve the above problems, the purpose of the utility model is to provide a heat exchanger.

[0004] According to the utility model, a heat exchanger is provided, including: an inner exchanger and an outer exchanger sleeved with each other, and a baffle plate encapsulated at the rear end of the outer exchanger. Among them, the inner exchanger includes: an inner ring formed into a hollow cylindrical shape and surrounding and defining a ventilation duct I inside the hollow cylindrical wall, and a plurality of inner heat dissipation fins distributed on the outer peripheral side of the hollow cylindrical wall; the outer exchanger includes: an outer ring formed into a hollow cylindrical shape and surrounding and defining a ventilation duct II inside the hollow cylindrical wall, a plurality of outer main heat dissipation fins distributed on the outer peripheral side of the hollow cylindrical wall, and a positioning groove formed on the inner peripheral side of the hollow cylindrical wall. Among them, the positioning groove is used to cooperate with the corresponding inner heat dissipation fins to sleeved the outer exchanger on the outside of the inner exchanger, so that the air outlet end of the inner exchanger extending into the inside of the hollow cylindrical wall of the outer exchanger is at a predetermined distance from the rear end of the outer exchanger to correspondingly form a return air area, and an air outlet area is formed between the outer peripheral side of the inner exchanger and the inner peripheral side of the outer exchanger that overlap each other.

[0005] Preferably, the inlet end of the inner exchanger exposes from the front end of the outer exchanger.

[0006] Preferably, the inner heat dissipation fins are evenly distributed on the outer circle I of the hollow cylindrical wall of the inner ring.

[0007] Preferably, the outer main heat dissipation fins are evenly distributed on the outer circle II of the hollow cylindrical wall of the outer exchanger.

[0008] Preferably, outer heat dissipation sub-fins are distributed at intervals on each outer main heat dissipation fin.

[0009] Preferably, the outer heat dissipation sub-fins are vertically and sequentially spaced and parallelly distributed on the outer main heat dissipation fins.

[0010] Preferably, the outer heat dissipation sub-fins form a cross-shaped structure on the outer main heat dissipation fins.

[0011] Preferably, there are two positioning grooves, which are distributed at the intersection of the diameter of the inner circle II of the hollow cylindrical wall of the outer exchanger and the inner circle II. The positioning groove is composed of two parallel positioning walls, namely positioning wall I and positioning wall II.

[0012] Preferably, a separator is provided between the baffles that are spaced apart from each other and the air outlet of the internal heat exchanger.

[0013] Preferably, in addition to the positioning groove, a one-sided contact strip is formed on the inner circle II of the hollow cylinder wall of the outer heat exchanger at a position corresponding to other inner heat dissipation fins, so as to make corresponding contact with other inner heat dissipation fins.

[0014] The beneficial effects of this utility model are: by disassembling the heat exchanger into two parts and then reassembling them, the molding difficulty is reduced and the cost is reduced. The heat dissipation fins are divided into external heat dissipation secondary fins and external heat dissipation main fins, which improves the heat exchange efficiency. Attached Figure Description

[0015] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.

[0016] Figure 1 This is a top view of the internal switch.

[0017] Figure 2 This is a top view of the external switch.

[0018] Figure 3 This is a top view diagram of the assembly.

[0019] Figure 4 This is a front view schematic diagram of the assembly structure.

[0020] Figure 5 This is a partial 3D schematic diagram of the assembly structure.

[0021] Figure 6 This is a three-dimensional cross-sectional schematic diagram of the assembly structure. Detailed Implementation

[0022] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The exemplary embodiments described below and illustrated in the drawings are intended to teach the principles of the present invention, enabling those skilled in the art to implement and use the present invention in various environments and for various applications. Therefore, the scope of protection of the present invention is defined by the appended claims, and the exemplary embodiments are not intended, and should not be considered, a limiting description of the scope of protection of the present invention. Furthermore, for ease of description, the dimensions of the various parts shown in the drawings are not necessarily drawn to actual scale. Orientation descriptions, such as up, down, left, right, top, bottom, etc., are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Throughout the drawings, the same elements are represented by the same or similar reference numerals. Conventional structures or partial structures will be omitted where they may cause confusion or make the understanding of the present disclosure difficult to observe. Unless otherwise specifically stated, the order and numerical values ​​of the components and assembly steps described in the embodiments do not limit the scope of this invention.

[0023] like Figure 1-6 As shown, this utility model provides a heat exchanger, including an inner exchanger 100, an outer exchanger 200, a baffle 300, a return air zone 400, and an outlet air zone 500.

[0024] The internal heat exchanger 100 includes: an inner ring 101, an outer ring I 102, an inner ring I 103, a ventilation duct I 104, an inner heat dissipation fin 105, an inlet end 106, and an outlet end 107.

[0025] The external heat exchanger 200 includes: ventilation duct II 201, inner circle II 202, external heat dissipation auxiliary fin 203, external heat dissipation main fin 204, outer circle II 205, outer ring 206, positioning wall I 207, positioning groove 208, positioning wall II 209, external heat exchanger front end 210 and external heat exchanger rear end 211.

[0026] <Internal Switch 100>

[0027] The inner ring 101 is enclosed by the outer circle I102 and the inner circle I103. The outer circle I102 and the inner circle I103 are concentric.

[0028] The hollow area inside the inner ring 101 is the ventilation duct I104.

[0029] The inner heat dissipation fins 105 are evenly distributed on the outer circle I102, with consistent adjacent distances and angles.

[0030] The internal exchanger 100 is generally in the shape of a cylinder. After being assembled with the external exchanger 200, the end of the internal exchanger 100 that protrudes from the front end of the external exchanger 200 is the inlet end 106. The end inserted into the external exchanger 200 is the air outlet end 107.

[0031] <External exchanger 200>

[0032] The outer ring 206 is defined by being surrounded by the outer circle II 205 and the inner circle II 2023. The outer circle II 205 and the inner circle II 202 are concentric.

[0033] The inner hollow area of the outer ring 206 is the ventilation duct II 201.

[0034] The external main heat dissipation fins 204 are evenly distributed on the outer circle II 205, with the adjacent distances and angles being the same.

[0035] The external auxiliary heat dissipation fins 203 are vertically and successively spaced and parallelly distributed on the external main heat dissipation fins 204, for example, formed into a structure like a Chinese character 'feng' etc.

[0036] There are two positioning grooves 208, which are distributed at the intersection of the diameter of the inner circle II 202 and the inner circle II 202.

[0037] The positioning groove 208 is composed of two parallel positioning walls, namely the positioning wall I 207 and the positioning wall II 209.

[0038] The external exchanger 200 is generally in the shape of a cylinder. After being assembled with the internal exchanger 100, the end from which the internal exchanger 100 protrudes is the front end 210 of the external exchanger, and the opposite end is the rear end 211 of the external exchanger.

[0039] <Assembly and use>

[0040] The two symmetric internal heat dissipation fins 105 of the internal exchanger 100 are inserted into the corresponding positioning grooves 208 of the external exchanger 200.

[0041] The air outlet end 107 of the internal exchanger 100 stops at a predetermined distance from the rear end 211 of the external exchanger.

[0042] The positioning groove 208 at the front end 210 of the external exchanger is fixed to the internal heat dissipation fin 105 of the internal exchanger 100 by means such as welding or clamping.

[0043] The baffle 300 is buckled on the rear end 211 of the external exchanger for encapsulation. At this time, the baffle 300 is concentric with the outer circle II 205 and is fixed by welding.

[0044] Thus, the heat exchanger according to the present utility model is formed.

[0045] Dig at the place where the heat exchanger needs to be buried, insert the rear end of the external exchanger 200 into the ground, and make the front end part exposed on the ground, then backfill the earthwork.

[0046] Indoor hot air is blown into ventilation duct I 104 from one side of the inlet end 106 of the internal heat exchanger 100.

[0047] The indoor hot air flows into the return air zone 400 through the ventilation duct and continues to blow into the room along the air outlet zone 500.

[0048] The heat of the hot air is exchanged with the heat dissipation main fin 204 and heat dissipation secondary fin 203 of the external heat exchanger 200, turning the hot air into cool air that is blown out.

[0049] This utility model is only shown as an illustration. The longer the inner heat exchanger 100 and the outer heat exchanger 200 are, the more thoroughly the heat is exchanged, and the closer the blown air is to the underground temperature.

[0050] Benefits: By breaking down the heat exchanger into two parts and then combining them, the molding difficulty is reduced and the cost is reduced. The heat dissipation fins are divided into external heat dissipation secondary fins 203 and external heat dissipation main fins 204, which accelerates the heat exchange efficiency.

[0051] <Example: Dimensions and Material Specifications>

[0052] The inner exchanger 100, the outer exchanger 200 and the baffle 300 are all made of aluminum alloy, specifically 6065 aluminum alloy, hot extruded, in T6 condition, and then sandblasted and oxidized.

[0053] Outer circle I102 has a diameter of 70 (±0.5) mm. Inner circle I103 has a diameter of 50 (±0.5) mm. Inner ring 101 has a wall thickness of 10 (±0.5) mm.

[0054] The inner heat dissipation fins are 105 mm thick and 30 mm high.

[0055] The inner circle II202 has a diameter of 135 (±0.5) mm. The outer circle II205 has a diameter of 145 (±0.5) mm.

[0056] The positioning groove 208 is 12 (±0.5) mm wide. Positioning wall I 207 and positioning wall II 209 have the same dimensions, with a wall thickness of 4 (±0.2) mm and a height of 12 (±0.5) mm.

[0057] The external heat dissipation main fin has a wall thickness of 8 (±0.5) mm and a height of 80 (±0.5) mm.

[0058] The external heat dissipation fin has a wall thickness of 6 (±0.5) mm and a height of 80 (±0.5) mm.

[0059] The baffle is 300mm thick with a wall thickness of 10 (±0.5)mm and a diameter of 145 (±0.5)mm.

[0060] The distance between the air outlet end 107 and the rear end of the external heat exchanger is 211300 (±1) mm.

[0061] The distance between the inlet end 106 and the front end of the external switch is 210300 (±1) mm.

[0062] Air volume 2-3m 3 / min.

[0063] The underground temperature remains between 10-20℃ throughout the year. If the internal heat exchanger 100 and external heat exchanger 200 in the underground section are long enough, the temperature in the air outlet zone 500 will also be between 10-20℃.

[0064] As described above, this utility model provides a heat exchanger comprising: an inner heat exchanger 100 and an outer heat exchanger 200 nested together, and a baffle 300 encapsulated at the rear end 211 of the outer heat exchanger. The inner heat exchanger 100 includes: an inner ring 101 formed in a hollow cylindrical shape and surrounding the inner wall of the hollow cylinder, defining a ventilation duct I 104; and a plurality of inner heat dissipation fins 105 distributed on the outer periphery of the hollow cylinder wall. The outer heat exchanger 200 includes: an outer ring 206 formed in a hollow cylindrical shape and surrounding the inner wall of the hollow cylinder, defining a ventilation duct II 201; and a plurality of inner heat dissipation fins 105 distributed on the outer periphery of the hollow cylinder wall. Multiple external heat dissipation fins 204 are formed on the outer periphery of the hollow cylinder wall, and positioning grooves 208 are formed on the inner periphery of the hollow cylinder wall. The positioning grooves 208 are used to cooperate with the corresponding internal heat dissipation fins 105, so that the external heat exchanger 200 is sleeved on the outside of the internal heat exchanger 100. The air outlet end 107 of the internal heat exchanger 100 extending into the hollow cylinder wall of the external heat exchanger 200 is a predetermined distance away from the rear end 211 of the external heat exchanger, thus forming a return air zone 400. An air outlet zone 500 is formed between the overlapping outer periphery of the internal heat exchanger 100 and the inner periphery of the external heat exchanger 200. In this way, the return air zone 400 and the air outlet zone 500 of the ventilation duct I 104 and the ventilation duct II 201 are connected.

[0065] The example above illustrates the spaced-apart baffle 300 and the air outlet 107 of the internal heat exchanger 100. However, this is not the only example. A separator, such as a partition strip formed on either side, can also be provided between them to define a predetermined distance between them. Furthermore, a snap-fit ​​can be formed between the partition strip formed on one side and a locking recess formed on the other side, facilitating the direct fixation of the air outlet 107 of the internal heat exchanger 100 to the baffle 300.

[0066] In such an example, the positioning groove 208 preferably extends along the inner side of the hollow cylindrical wall of the outer exchanger 200. However, it is not limited to being formed as a single line, but can also be formed in segments at intervals. Moreover, it is not limited to two positioning grooves 208. That is, the number of inner heat dissipation fins 105 is not limited to an even number, as long as they can fit stably and smoothly.

[0067] In addition to the two positioning slots 208 mentioned above, a single-sided contact strip can also be formed on the inner circle II 202 of the hollow cylindrical wall of the outer heat exchanger 200 at a position corresponding to the other inner heat dissipation fins 105, so as to make corresponding contact with the other inner heat dissipation fins 105 and increase the contact heat dissipation area when assembled.

[0068] In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified. Unless otherwise explicitly specified and limited, the terms "installed," "connected," "linked," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. Although the present invention has been described with reference to various specific embodiments, it should be understood that modifications can be made within the spirit and scope of the described inventive concept. Therefore, it is intended that the present invention be limited to the described embodiments but will have the full scope defined by the language of the appended claims.

Claims

1. A heat exchanger, characterized by, include: The system comprises an inner exchanger (100) and an outer exchanger (200) nested together, and a baffle (300) encapsulated at the rear end (211) of the outer exchanger. The inner exchanger (100) includes an inner ring (101) formed in a hollow cylindrical shape and surrounding a ventilation duct I (104) on the inner side of the hollow cylindrical wall, and a plurality of inner heat dissipation fins (105) distributed on the outer periphery of the hollow cylindrical wall. The outer exchanger (200) includes an outer ring (206) formed in a hollow cylindrical shape and surrounding a ventilation duct II (201) on the inner side of the hollow cylindrical wall, and a plurality of outer heat dissipation fins distributed on the outer periphery of the hollow cylindrical wall. The fins (204) and the positioning grooves (208) formed on the inner circumferential side of the hollow cylinder wall, wherein the positioning grooves (208) are used to cooperate with the corresponding inner heat dissipation fins (105) to fit the outer heat exchanger (200) onto the outer side of the inner heat exchanger (100), so that the air outlet end (107) of the inner heat exchanger (100) extending into the inner side of the hollow cylinder wall of the outer heat exchanger (200) is a predetermined distance away from the rear end (211) of the outer heat exchanger to form a return air zone (400), and the air outlet zone (500) is formed between the overlapping outer circumferential side of the inner heat exchanger (100) and the inner circumferential side of the outer heat exchanger (200).

2. The heat exchanger according to claim 1, characterized in that, The inlet end (106) of the inner switch (100) is exposed from the front end of the outer switch (200).

3. The heat exchanger according to claim 1, characterized in that, The inner heat dissipation fins (105) are evenly distributed on the outer circle I (102) of the hollow cylinder wall of the inner ring (101).

4. The heat exchanger according to claim 1, characterized in that, The external heat dissipation fins (204) are evenly distributed on the outer circle II (205) of the hollow cylinder wall of the external heat exchanger (200).

5. The heat exchanger according to claim 4, characterized in that, External heat dissipation auxiliary wings (203) are distributed at intervals on each external heat dissipation main wing (204).

6. The heat exchanger according to claim 5, characterized in that, The external heat dissipation auxiliary wings (203) are vertically and sequentially distributed parallel to the external heat dissipation main wings (204).

7. The heat exchanger according to claim 6, characterized in that, The external heat dissipation fin (203) forms a shaped structure on the external heat dissipation main fin (204).

8. The heat exchanger according to claim 1, characterized in that, There are two positioning slots (208), which are located at the junction of the diameter of the inner circle II (202) of the hollow cylinder wall of the outer exchanger (200) and the inner circle II (202). The positioning slot (208) is composed of two parallel positioning walls, namely positioning wall I (207) and positioning wall II (209).

9. The heat exchanger according to claim 1, characterized in that, A separator is provided between the baffle (300) and the air outlet (107) of the internal heat exchanger (100), which are separated from each other.

10. The heat exchanger according to claim 8 or 9, characterized in that, In addition to the positioning groove (208), a single-sided contact strip is formed on the inner circle II (202) of the hollow cylindrical wall of the outer heat exchanger (200) at a position corresponding to the other inner heat dissipation fins (105) so as to make corresponding contact with the other inner heat dissipation fins (105).

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