Heat exchanger

Abstract

The heat exchanger comprises a heat exchange part and a metal plate, and the heat exchange part comprises a plurality of fins arranged at intervals in the thickness direction of the heat exchange part. The sheet metal plate is arranged between two adjacent fins in one group along the thickness direction of the fins, a heating device is arranged on the sheet metal plate, and the sheet metal plate is made of a heat conduction material. According to the heat exchanger, the heating device dissipates heat through the metal plate, and air around the fins can be rapidly heated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchange equipment, in particular to a heat exchanger. BACKGROUND

[0002] Finned heat exchanger is the most widely used heat exchange equipment. Finned heat exchanger is used to strengthen heat transfer by adding fins on the heat exchange pipe. In low temperature working condition, when wet air flows through the surface of the heat exchanger (used as evaporator), water vapor is easy to condense on the surface of the fin and form frost layer, that is, the finned heat exchanger is frosted, and the formation of frost layer will increase the thermal resistance and narrow the air flow channel, thus reducing the heat exchange efficiency of the finned heat exchanger. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a heat exchanger to solve the problem that the heat exchanger is easy to frost in low temperature working condition, thereby reducing the heat exchange efficiency.

[0004] A heat exchanger, comprising a heat exchange part and a sheet metal plate, the heat exchange part comprising a plurality of fins arranged at intervals along the thickness direction of the heat exchange part. The sheet metal plate is arranged between two adjacent fins along the thickness direction of the fins, and the sheet metal plate is provided with a heating device, and the sheet metal plate is made of heat-conducting material.

[0005] In one embodiment, the heating device is configured as an electric heating wire, and the electric heating wire is laid on the surface of the sheet metal plate.

[0006] In one embodiment, the number of electric heating wires on the sheet metal plate is configured as a plurality of electric heating wires, the plurality of electric heating wires are arranged at intervals along the height direction of the fins, each electric heating wire extends from one end of the sheet metal plate to the other end along the width direction of the sheet metal plate, and the plurality of electric heating wires are connected in parallel in the circuit; the heat exchanger further comprises a plurality of heat exchange pipes, the sheet metal plate is provided with a plurality of first mounting holes, and each heat exchange pipe is arranged in one first mounting hole; the plurality of first mounting holes are arranged at intervals on the sheet metal plate, and each electric heating wire extends between adjacent first mounting holes.

[0007] In one embodiment, the heat exchanger further comprises a support structure, the support structure extends along the thickness direction of the fins, one end of the support structure is connected to the sheet metal plate, and the other end of the support structure abuts the fin adjacent to the sheet metal plate.

[0008] In one embodiment, the heat exchanger further comprises a heat exchange pipe, the sheet metal plate is provided with a first mounting hole, the fin is provided with a second mounting hole, and the heat exchange pipe is arranged in the first mounting hole and the second mounting hole; the support structure is configured as a flange arranged around the side of the first mounting hole and / or the second mounting hole.

[0009] In one of the embodiments, the first mounting hole forms a first flange on one side of the sheet metal, the second mounting hole forms a second flange on one side of the fin, the first flange and the second flange are consistent in the direction of orientation, and the first flange abuts the fin adjacent thereto, and the second flange abuts the fin adjacent thereto or the sheet metal plate.

[0010] In one of the embodiments, the heat exchanger further comprises a fixing member, one end of the fixing member is fixedly connected to the sheet metal plate, and the other end is fixedly connected to at least one fin adjacent to the sheet metal plate.

[0011] In one of the embodiments, the fixing member is configured as a bolt, the sheet metal plate is provided with a first connecting hole, and the fin adjacent to the sheet metal plate is provided with a second connecting hole corresponding to the first connecting hole, and the first connecting hole and the second connecting hole are respectively used for penetrating the bolt.

[0012] In one of the embodiments, the number of the sheet metal plates is configured as multiple, the multiple sheet metal plates are arranged in the thickness direction of the fin, the fins between any two adjacent sheet metal plates form a fin group, and the number of fins included in each fin group is the same.

[0013] In one of the embodiments, in the thickness direction of the fin, the length of the heat exchange part is L1, the spacing between the adjacent two sheet metal plates is L2, and L1 and L2 are positively correlated.

[0014] The heat exchanger provided by the application, the heating device is used for heating the sheet metal plate and dissipating heat through the sheet metal plate, by arranging the sheet metal plate between the adjacent two fins, the sheet metal plate can quickly heat the air around the fin, so as to significantly improve the defrosting efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 The schematic diagram of the heat exchanger in the first embodiment provided by the application;

[0017] Figure 2 The front view of the sheet metal plate in one of the embodiments provided by the application;

[0018] Figure 3 The front view of the fin in one of the embodiments provided by the application;

[0019] Figure 4 The schematic diagram of the assembly of the end plate and the heat exchange pipe in one of the embodiments provided by the application;

[0020] Figure 5 A schematic diagram of a heat exchanger in Example Two provided for the present application;

[0021] Figure 6 A schematic diagram of a heat exchanger in Example Three provided for the present application;

[0022] Figure 7 A schematic diagram of a heat exchanger in Example Four provided for the present application.

[0023] Reference signs: 100, heat exchanger; 10, heat exchange part; 101, fin group; 11, fin; 111, second mounting hole; 112, second flange; 113, second connecting hole; 20, sheet metal plate; 210, heating device; 201, electric heating wire; 21, first mounting hole; 211, first flange; 22, first connecting hole; 30, heat exchange pipe; 40, end plate; 50, support structure. DETAILED DESCRIPTION

[0024] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways beyond the specific embodiments described and it is therefore contemplated to cover all such modifications as fall within the scope of the application. It is to be understood that the application is not limited in its application to the details set forth in the description below.

[0025] It should be noted that when an element is referred to as being "on" or "fixed to" another element, it can be directly on or fixed to the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions as used in the description of the specification are for the purpose of illustration only and do not indicate the only position of the present application.

[0026] In addition, the terms "first", "second", etc. are used herein only to describe various elements, and do not indicate or imply relative importance or a number of indicated technical features. Thus, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0027] In the present application, unless otherwise explicitly specified and limited, the first feature is "on", "under" the second feature, which can be that the first feature is in direct contact with the second feature, or the first feature is indirectly in contact with the second feature through an intermediate medium. Moreover, the first feature is "above", "over" and "on" the second feature, which can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature is "below", "under" and "under" the second feature, which can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0028] Unless otherwise defined, all technical and scientific terms used in the specification of the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing the specific embodiments and are not intended to limit the present application. The term "and / or" used in the specification of the present application includes any and all combinations of one or more related listed items.

[0029] Embodiment one:

[0030] Please refer to Figure 1 and Figure 2 , the present application provides a heat exchanger 100, which comprises a heat exchange part 10 and a sheet metal plate 20, the heat exchange part 10 comprises a plurality of fins 11 arranged along the thickness direction of the fins 11. The sheet metal plate 20 is arranged between two adjacent fins 11 along the thickness direction of the fins 11, and the sheet metal plate 20 is provided with a heating device 210, and the sheet metal plate is made of heat-conducting material, which can be metal material. The heating device 210 is used to heat the sheet metal plate 20 and dissipate heat through the sheet metal plate 20. By arranging the sheet metal plate 20 between the two adjacent fins 11, the sheet metal plate 20 can quickly heat the air around the fins 11, thereby significantly improving the defrosting efficiency.

[0031] Optionally, in one embodiment, the heating device 210 is configured as an electric heating wire 201, which is laid on the surface of the sheet metal plate 20.

[0032] Further, the number of electric heating wires 201 on the sheet metal plate 20 is configured as a plurality of electric heating wires 201, which are arranged along the height direction of the fins 11. Each electric heating wire 201 extends along the width direction of the sheet metal plate, and the plurality of electric heating wires 201 are connected in parallel in the circuit. In this way, not only can the sheet metal plate 20 be uniformly heated at each position, but also since the plurality of electric heating wires 201 work independently, the power of the corresponding electric heating wire 201 can be adjusted according to the specific heating requirement of different positions of the heat exchanger 100, so as to more accurately defrost the heat exchanger 100.

[0033] Further, the heat exchanger 100 further comprises a plurality of heat exchange pipes 30, the sheet metal plate 20 is provided with a plurality of first mounting holes 21, the plurality of first mounting holes 21 are arranged at intervals on the sheet metal plate 20, and each electric heating wire 201 extends between adjacent first mounting holes 21. In this way, the electric heating wire 201 can avoid the first mounting hole 21 and the heat exchange pipe 30. Alternatively, the electric heating wire 201 extends in a curved shape between adjacent first mounting holes 21.

[0034] As shown in Figure 1 , the sheet metal plate 20 and the fin 11 adjacent thereto are arranged at intervals. In this way, it is convenient to clean the dust and dirt between the sheet metal plate 20 and the fin 11 adjacent thereto, so as to avoid the accumulation of dust and dirt and reduce the heat exchange efficiency of the heat exchanger 100.

[0035] As shown in Figure 1 , the heat exchanger 100 further comprises a support structure 50, the support structure 50 extends along the thickness direction of the fin 11, one end of the support structure 50 is connected to the sheet metal plate 20, and the other end abuts against the fin 11 adjacent to the sheet metal plate 20. In this way, the support structure 50 forms a support between the sheet metal plate 20 and the corresponding fin 11, so as to improve the stability of the overall structure of the heat exchanger 100.

[0036] Please refer to Figure 2 to Figure 4 , the heat exchanger 100 further comprises a heat exchange pipe 30, the sheet metal plate 20 is provided with a first mounting hole 21, the fin 11 is provided with a second mounting hole 111, and the heat exchange pipe 30 is arranged in the first mounting hole 21 and the second mounting hole 111.

[0037] Alternatively, the support structure 50 is configured as a flange arranged around the side of the first mounting hole 21 and / or the second mounting hole 111. That is, the first mounting hole 21 can be configured as a flange hole, so that the first mounting hole 21 not only has the function of allowing the heat exchange pipe 30 to pass through, but also can form a support between the sheet metal plate 20 and the fin 11 adjacent to the sheet metal plate 20; or the second mounting hole 111 is configured as a flange hole, so that the second mounting hole 111 not only has the function of allowing the heat exchange pipe 30 to pass through, but also can form a support between the sheet metal plate 20 and the fin 11 adjacent to the sheet metal plate 20; or the first mounting hole 21 and the second mounting hole 111 can also be configured as flange holes. Of course, in other embodiments, the support structure 50 can also be configured as a protrusion arranged on the sheet metal plate 20 or the corresponding fin 11.

[0038] Exemplarily, in one of the embodiments, as shown in Figure 1As shown, the first mounting hole 21 forms a first flange 211 on one side of the sheet metal plate 20, and the second mounting hole 111 forms a second flange 112 on one side of the fin 11. The first flange 211 and the second flange 112 are oriented in the same direction, and the first flange 211 abuts the fin 11 adjacent thereto, and the second flange 112 abuts the fin 11 or the sheet metal plate 20 adjacent thereto.

[0039] It should be noted that the "first flange 211 and the second flange 112 are oriented in the same direction" means that, along the thickness direction of the fin 11, the first flange 211 is located on the right side of the sheet metal plate 20, and the second flange 112 is correspondingly located on the right side of the fin 11; or the first flange 211 is located on the left side of the sheet metal plate 20, and the second flange 112 is correspondingly located on the left side of the fin 11. Figure 1 In the embodiment shown in the drawings, the first flange 211 is located on the left side of the sheet metal plate 20, and the second flange 112 is correspondingly located on the left side of the fin 11. In this way, the fins 11 and the sheet metal plate 20 are arranged conveniently. Moreover, the second flange 112 can form a support between two adjacent fins 11 or between the fin 11 and the sheet metal plate 20, thereby further improving the stability of the overall structure of the heat exchanger 100. In particular, when the heat exchanger 100 is washed with water, the fins 11 can be prevented from tilting or deforming in large pieces.

[0040] The heat exchanger 100 further comprises a fixing member, one end of the fixing member is fixedly connected to the sheet metal plate 20, and the other end is fixedly connected to at least one fin 11 adjacent to the sheet metal plate 20. In this way, the sheet metal plate 20 can be prevented from shaking relative to the fin 11 adjacent thereto. For example, the sheet metal plate 20 is fixedly connected to one fin 11 adjacent thereto by the fixing member, or the sheet metal plate 20 is fixedly connected to multiple fins 11 adjacent thereto by the fixing member.

[0041] In another embodiment, the support structure 50 can not be provided, and the sheet metal plate 20 is attached to the fin 11 adjacent thereto. In this way, the fixing member can conveniently connect the sheet metal plate 20 and the fin 11 adjacent thereto together.

[0042] Optionally, in an embodiment, the fixing member is configured as a bolt, the sheet metal plate 20 is provided with a first connecting hole 22, and the fin 11 adjacent to the sheet metal plate 20 is provided with a second connecting hole 113 corresponding to the first connecting hole 22, and the first connecting hole 22 and the second connecting hole 113 are respectively used for passing the bolt.

[0043] As shown in the drawings, Figure 1 The heat exchanger 100 further comprises two end plates 40, which are respectively located on the left and right sides of the heat exchange portion 10 along the thickness direction of the fin 11. The end plate 40 is used to protect the heat exchange portion 10, and the two ends of the heat exchange tube 30 are respectively connected and fixed to the two end plates 40.

[0044] As shown in the drawings, Figure 1As shown, the number of sheet metal plates 20 is configured as multiple, multiple sheet metal plates 20 are arranged along the fin 11 thickness direction, and the fins 11 between any two adjacent sheet metal plates 20 form a fin group 101. Each fin group 101 contains the same number of fins 11. In this way, multiple sheet metal plates 20 can more evenly defrost the heat exchanger 100 along the thickness direction of the fin 11.

[0045] Please refer to Figure 1 Further, along the thickness direction of the fin 11, the length of the heat exchange part 10 is L1, the spacing between the adjacent two sheet metal plates 20 is L2, and L1 is positively correlated with L2. That is, as the length L1 of the heat exchange part 10 increases, the spacing L2 between the adjacent two sheet metal plates 20 also increases, so that each fin group 101 contains more fins 11, and the sheet metal plate 20 is arranged more sparsely. In this way, it can avoid that the large-size heat exchanger 100 is too heavy due to too many sheet metal plates 20 inside, which is not convenient for transportation and installation. Among them, the sheet metal plate 20 can use light alloys such as aluminum alloy and magnesium alloy to further reduce the weight of the heat exchanger 100.

[0046] Optionally, L2 = (L1-101*112) / M-N, where M is the number of sheet metal plates 20, and N is the thickness of the sheet metal plate 20. Exemplarily, in embodiment one, as shown in Figure 1 500mm < L1≤1250mm, each fin group 101 contains two fins 11. Among them, L2 is equal to the sum of the thickness of two fins 11, the length of two second flanges 112 and the length of one first flange 211.

[0047] In embodiment two, as shown in Figure 5 0mm < L1≤500mm, each fin group 101 contains one fin 11. Among them, L2 is equal to the sum of the thickness of one fin 11, the length of one second flange 112 and the length of one first flange 211.

[0048] In embodiment three, as shown in Figure 6 1250mm < L1≤2500mm, each fin group 101 contains five fins 11. Among them, L2 is equal to the sum of the thickness of five fins 11, the length of five second flanges 112 and the length of one first flange 211.

[0049] In embodiment four, as shown in Figure 7 2500mm < L1≤5000mm, each fin group 101 contains ten fins 11. Among them, L2 is equal to the sum of the thickness of ten fins 11, the length of ten second flanges 112 and the length of one first flange 211.

[0050] Any combination of the technical features in the above-described embodiments can be made, and for the sake of brevity, not all possible combinations are described, however, it is to be understood that the application embraces all such possible combinations.

[0051] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, some modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the patent protection scope of the present application should be subject to the appended claims.

Claims

1. A heat exchanger, characterized in that, The heat exchanger includes: The heat exchange section (10) includes a plurality of fins (11) spaced apart along its own thickness direction; Sheet metal plate (20), the sheet metal plate (20) is disposed between two adjacent fins (11) along the thickness direction of the fins (11), and the sheet metal plate (20) is provided with a heating device (210), the sheet metal plate (20) is made of thermally conductive material.

2. The heat exchanger according to claim 1, characterized in that, The heating device (210) is configured as an electric heating wire (201), which is laid on the surface of the sheet metal plate (20).

3. The heat exchanger according to claim 2, characterized in that, The sheet metal plate (20) has a plurality of electric heating wires (201), each of which extends along the width direction of the sheet metal plate (20), and the plurality of electric heating wires (201) are spaced apart along the height direction of the fins (11), and the plurality of electric heating wires (201) are connected in parallel in the circuit. The heat exchanger also includes a plurality of heat exchange tubes (30), and the sheet metal plate (20) has a plurality of first mounting holes (21), each of the heat exchange tubes (30) passing through one of the first mounting holes (21); the plurality of first mounting holes (21) are arranged at intervals on the sheet metal plate (20), and each of the electric heating wires (201) extends between adjacent plurality of first mounting holes (21).

4. The heat exchanger according to claim 1, characterized in that, The heat exchanger also includes a support structure (50) that extends along the thickness direction of the fins (11). One end of the support structure (50) is connected to the sheet metal plate (20), and the other end abuts against the fins (11) adjacent to the sheet metal plate (20).

5. The heat exchanger according to claim 4, characterized in that, The heat exchanger also includes a heat exchange tube (30), the sheet metal plate (20) is provided with a first mounting hole (21), the fins (11) are provided with a second mounting hole (111), and the heat exchange tube (30) passes through the first mounting hole (21) and the second mounting hole (111). The support structure (50) is configured as a flange surrounding the first mounting hole (21) and / or the second mounting hole (111).

6. The heat exchanger according to claim 5, characterized in that, The first mounting hole (21) forms a first flange (211) on one side of the sheet metal plate (20), and the second mounting hole (111) forms a second flange (112) on one side of the fin (11). The first flange (211) and the second flange (112) face the same direction, and the first flange (211) abuts against the adjacent fin (11), and the second flange (112) abuts against the adjacent fin (11) or the sheet metal plate (20).

7. The heat exchanger according to claim 1, characterized in that, The heat exchanger also includes a fixing member, one end of which is fixedly connected to the sheet metal plate (20), and the other end is fixedly connected to at least one of the fins (11) adjacent to the sheet metal plate (20).

8. The heat exchanger according to claim 7, characterized in that, The fastener is configured as a bolt. The sheet metal plate (20) has a first connecting hole (22). The fin (11) adjacent to the sheet metal plate (20) has a second connecting hole (113) corresponding to the first connecting hole (22). The first connecting hole (22) and the second connecting hole (113) are respectively used to pass through the bolt.

9. The heat exchanger according to any one of claims 1-8, characterized in that, The number of sheet metal plates (20) is configured to be multiple, and the multiple sheet metal plates (20) are arranged at intervals along the thickness direction of the fins (11). The fins (11) between any two adjacent sheet metal plates (20) form a fin group (101), and each fin group (101) contains the same number of fins (11).

10. The heat exchanger according to claim 9, characterized in that, Along the thickness direction of the fins (11), the length of the heat exchange section (10) is L1, the distance between two adjacent sheet metal plates (20) is L2, and L1 and L2 are positively correlated.

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