Novel fin and heat exchanger with same

Abstract

The novel fin comprises a fin body, the fin body is provided with supporting protrusions, supporting steps and pipe holes used for allowing refrigerant pipes to penetrate through, and when the two sets of fins are stacked, the supporting protrusions of one set of fins abut against the supporting steps of the other set of fins so that a gap used for air to pass through can be reserved between the two sets of fins. The utility model provides a novel fin, which can solve the problem of high assembly cost of the fin and reduce the production cost of a heat exchanger. The utility model further discloses a heat exchanger with the fin.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat exchangers, and particularly relates to a novel fin and a heat exchanger with the fin. Background Art

[0002] An air conditioner is a device that regulates indoor temperature and humidity. It cools the air by allowing the refrigerant to flow between the evaporator and the heat exchanger and perform heat exchange in the heat exchanger. The interior of the heat exchanger is composed of fins made of metal materials with good thermal conductivity and refrigerant pipes for the refrigerant to pass through the heat exchanger. When the refrigerant enters the heat exchanger, these fins exchange heat with the air and the refrigerant pipes respectively. When the air passes through the fins, it will take away some of the heat of the refrigerant in the refrigerant pipes, thus achieving heat transfer from the indoor air.

[0003] In order to improve the cooling effect of the air conditioner, it is necessary to increase the contact area between the air and the fins so that the fin surface receives more heat per unit time and the heat transfer efficiency of the heat exchanger is improved. Therefore, a smaller spacing needs to be set between two adjacent groups of fins. Conventional heat exchangers are usually assembled using a plug-in installation method, which inserts the fins into the assembly mold and fixes them through welding, screws and other fixing methods. The problem is that since the gap between the two adjacent groups of fins is very small, the above fin assembly method is used, and the distance between the slots in the assembly mold is very small. Therefore, the assembly mold needs to be processed with high precision to meet the assembly requirements of the heat exchanger, which makes the design cost of the assembly mold high and the processing difficulty great, increases the assembly cost of the fins, and increases the production cost of the heat exchanger.

[0004] Therefore, further improvement is needed. Utility Model Content

[0005] The purpose of the present invention is to overcome at least one of the above-mentioned deficiencies of the prior art and to provide a new type of fin and a heat exchanger having the fin, which can solve the problem of high fin assembly cost and reduce the production cost of the heat exchanger.

[0006] In order to achieve the above-mentioned purpose, the technical solution provided by the embodiment of the present utility model is:

[0007] A new type of fin includes a sheet body, which is provided with a supporting protrusion, a supporting step, and a tube hole for inserting a refrigerant tube. When two groups of fins are stacked, the supporting protrusions of one group of fins abut against the supporting steps of the other group of fins so that a gap for air to pass through is left between the two groups of fins.

[0008] The sheet body is also provided with ventilation holes to allow air to pass through the fins. The ventilation holes are in several groups and are evenly arranged on the end surface of the sheet body.

[0009] The sheet body is also provided with an air guide portion for guiding air to flow toward the ventilation holes. The air guide portion is arranged on the upper end surface and / or the lower end surface of the sheet body. The air guide portions are divided into several groups and are respectively arranged corresponding to each ventilation hole.

[0010] The tube holes are arranged in groups and spaced apart in the horizontal direction of the sheet body. The support protrusions are arranged on one of the upper end surface and the lower end surface of the sheet body and are located outside the tube holes. The support steps are arranged on the other of the upper end surface and the lower end surface of the sheet body and correspond to the support protrusions.

[0011] The tube hole is in a double-circular square shape, comprising a first hole portion, a second hole portion, and a third hole portion. The vertical projection of the first hole portion is in the shape of an elongated strip and is located in the middle of the tube hole. The vertical projection of the second hole portion is in the shape of a semicircle and is located on the left side of the tube hole and is connected to the first hole portion. The vertical projection of the third hole portion is in the shape of a semicircle and is located on the right side of the tube hole and is connected to the first hole portion. The support protrusion and the support step are respectively arranged around the periphery of the second hole portion and / or the periphery of the third hole portion.

[0012] The supporting protrusion includes a protrusion connecting portion for supporting the protrusion to be connected to the sheet body, and a protrusion supporting portion for supporting the protrusion to abut against the supporting step. The protrusion connecting portion extends outward from the end surface of the sheet body. The horizontal projection of the protrusion supporting portion is trumpet-shaped, and its radial dimension gradually increases from the end surface of the sheet body in an outward direction. The supporting step is recessed inward from the end surface of the sheet body.

[0013] The radial dimension of the end of the raised support portion is A, the radial dimensions of the second hole portion and the third hole portion are the same and are both a, wherein a<A, and the radial dimension of the root of the support step is B, wherein A<B.

[0014] The vertical projection of the sheet body is square, circular or polygonal, and the tube holes are extended along the horizontal direction of the sheet body, or the tube holes are extended along the vertical direction of the sheet body.

[0015] The sheet body is made of aluminum metal or copper metal, and the supporting protrusions, supporting steps and the sheet body are integrally formed, or the supporting protrusions and the sheet body are separately provided.

[0016] A heat exchanger comprises a refrigerant tube and fins, wherein a plurality of groups of fins are stacked and arranged in sequence to form a fin group, and the refrigerant tube is inserted into the fin group through the tube holes of the fins.

[0017] The refrigerant tube is formed by bending a single pipe. The refrigerant tube is an aluminum tube or a copper tube. The refrigerant tube is provided with a liquid inlet and a liquid outlet. The liquid inlet is arranged at the head end of the refrigerant tube, and the liquid outlet is arranged at the end of the refrigerant tube.

[0018] The beneficial effects of the utility model are as follows:

[0019] The utility model adopts the fins of the above technical solution. When two groups of fins are stacked, the supporting protrusions on one group of fins abut against the supporting steps on the other group of fins, so that a gap for air to pass through is left between the two groups of fins. The fin assembly can be completed without using an assembly mold and the gap requirements between the fins can be met, which reduces the design cost and processing cost of the assembly mold, thereby reducing the assembly cost of the fins and lowering the production cost of the heat exchanger.

[0020] In addition, ventilation holes are provided on the fin body. When air passes through the heat exchanger, the air can pass through the fins through the ventilation holes, increasing the contact area of the air contacting the fins and further improving the heat exchange effect of the fins.

[0021] In addition, the shape of the tube hole is a double-circular square, and the bent refrigerant tube can be inserted into the tube hole, which reduces the welding points on the refrigerant tube and reduces the processing cost of the refrigerant tube. Moreover, since the number of welding points on the refrigerant tube is reduced, the leakage points of the refrigerant are also reduced to a certain extent, thereby improving the stability of the refrigerant tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic structural diagram of the fin according to an embodiment of the present invention.

[0023] Figure 2 This is a schematic structural diagram of the fin according to an embodiment of the present invention.

[0024] Figure 3 This is a cross-sectional view of a fin according to an embodiment of the present invention.

[0025] Figure 4 for Figure 3 Enlarged view of part C.

[0026] Figure 5 for Figure 3 Enlarged view of part D.

[0027] Figure 6 This is a front view of a fin according to an embodiment of the present invention.

[0028] Figure 7 This is a rear view of the fin according to an embodiment of the present invention.

[0029] Figure 8 This is a cross-sectional view of the stacked fins of an embodiment of the present invention.

[0030] Figure 9 for Figure 8 Enlarged view of part E.

[0031] Figure 10 This is a schematic structural diagram of a heat exchanger according to an embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0033] See also Figure 1-9 , the new fin includes a sheet 11. In this embodiment, the sheet 11 is plate-shaped and its vertical projection is preferably rectangular. The sheet 11 is provided with a supporting protrusion 13, a supporting step 14, and a tube hole 12. The tube hole 12 is used to pass the refrigerant tube 2. The tube hole 12 is a double square. The tube hole 12 includes a first hole portion 120, a second hole portion 121, and a third hole portion 122. The vertical projection of the first hole portion 120 is long and is located in the middle of the tube hole 12. The vertical projection of the second hole portion 121 is semicircular and is located on the left of the tube hole 12 and is connected to the first hole portion 120. The vertical projection of the third hole portion 122 is semicircular and is located on the right of the tube hole 12 and is connected to the first hole portion 120. The radial dimensions of the second hole portion 121 and the third hole portion 122 are equivalent to the radial dimension of the refrigerant tube 2 and are both larger than the radial dimension of the first hole portion 120, so that the refrigerant tube 2 can pass through The second hole portion 121 and the third hole portion 122 are positioned in the second hole portion 121 and the third hole portion 122. The support protrusion 13 is provided on the upper end surface of the sheet body 11 and is arranged around the outer periphery of the second hole portion 121 and the outer periphery of the third hole portion 122. The support step 14 is provided on the lower end surface of the sheet body 11 and is arranged around the outer periphery of the second hole portion 121 and the outer periphery of the third hole portion 122 and is provided corresponding to the support protrusion 13. When the two groups of fins 1 are stacked, the support protrusion 13 on one group of fins 1 abuts against the support step 14 on the other group of fins 1, so that a gap for air to pass through is left between the two groups of fins 1. People do not need to use an assembly mold to complete the assembly of the fins 1 and can meet the gap requirements between the fins 1, reducing the cost of designing the assembly mold and the cost of processing the assembly mold, thereby reducing the assembly cost of the fins 1 and reducing the production cost of the heat exchanger.

[0034] Furthermore, ventilation holes 15 are provided on the sheet body 11. Specifically, in this embodiment, the ventilation holes 15 are in the shape of shutters and pass through the sheet body 11. The number of ventilation holes 15 is preferably several groups and is evenly arranged on the end surface of the sheet body 11 and is located outside the tube hole 12. Through the above technical solution, when air passes through the heat exchanger, the air can pass through the fin 1 through the ventilation holes 15, thereby increasing the contact area of the air contacting the fin 1, and further improving the heat exchange effect of the fin 1. Those skilled in the art can understand this.

[0035] Furthermore, an air guide portion 16 is also provided on the sheet body 11. Specifically, in this embodiment, the horizontal projection of the guide portion is n-shaped, and its air inlet end faces the direction in which the air enters the heat exchanger. The number of air guide portions 16 corresponds to the setting of the ventilation holes 15, and is preferably several groups and evenly arranged on the lower end surface of the sheet body 11. Through the above technical solution, when air passes through the heat exchanger, the air can enter the ventilation holes 15 through the air guide portion 16 and pass through the fin 1, thereby increasing the probability of air passing through the fin 1 and further increasing the contact area of the air contacting the fin 1. This can be understood by those skilled in the art.

[0036] Furthermore, in this embodiment, the number of the tube holes 12 is preferably eighteen, with six arranged at intervals along the length direction of the sheet 11 and three arranged at intervals along the width direction of the sheet 11. The tube holes 12 are extended in the horizontal direction of the sheet 11, or extended in the vertical direction of the sheet 11 to avoid deformation of the tube holes 12 and squeezing of the refrigerant tube 2 when the fin 1 is bent, which can be understood by those skilled in the art.

[0037] Furthermore, in this embodiment, the supporting protrusion 13 includes a protruding connecting portion 130 and a protruding supporting portion 131. The protruding connecting portion 130 extends outward from the upper end surface of the sheet body 11 to support the protrusion 13 connected to the sheet body 11. The protruding supporting portion 131 is connected to the protruding connecting portion 130, and its horizontal projection is trumpet-shaped. Its radial dimension gradually increases from the end surface of the sheet body 11 in the outward direction. The radial dimension of the end of the protruding supporting portion 131 is A, and the radial dimension of the tube hole 12 is a, a<A. The supporting step 14 is recessed inward from the lower end surface of the sheet body 11, and the root radial dimension of the supporting step 14 is B, A<B. When two or more groups of fins 1 are stacked in sequence from bottom to top, the end of the step supporting portion abuts against the inner side of the support step 14 and the outer periphery of the tube hole 12 to realize that the supporting protrusion 13 abuts against the support step 14. Those skilled in the art can understand it.

[0038] Furthermore, in this embodiment, the sheet body 11 is preferably made of aluminum metal. Compared with copper material, the cost of aluminum material is lower than that of copper material, which can reduce the material cost of the fin 1 to a certain extent. The support protrusion 13 and the support step 14 are preferably formed integrally with the sheet body 11. Specifically, the support protrusion 13, the support step 14 and the sheet body 11 are formed integrally by stamping, or the support protrusion 13 is installed on the sheet body 11 by welding or the like, which can be understood by those skilled in the art.

[0039] See also Figure 10The heat exchanger includes a refrigerant tube 2 and fins 1. In this embodiment, the number of fins 1 is preferably forty groups and they are stacked and arranged in sequence along the up and down direction of the heat exchanger to form a fin group, and each tube hole 12 on each fin 1 is set in a one-to-one correspondence so that the refrigerant tube 2 passes through each fin 1. The refrigerant tube 2 is inserted into the fin group through the tube hole 12 of the fin 1. Specifically, when the refrigerant tube 2 is installed in the tube hole 12, the refrigerant tube 2 expands by water expansion and has an interference fit with the tube hole 12, so that the refrigerant tube 2 and the tube hole 12 are attached to each other and heat exchange is performed. The refrigerant tube 2 is preferably formed by bending a single aluminum tube, and The tube hole 12 of the fin 1 is in a double-circular square shape, and the bent refrigerant tube 2 can be inserted into the tube hole 12, reducing the welding points on the refrigerant tube 2, reducing the processing cost of the refrigerant tube 2, and since the number of welding points on the refrigerant tube 2 is reduced, the leakage points of the refrigerant are also reduced to a certain extent, thereby improving the use stability of the refrigerant tube 2. The refrigerant tube 2 is provided with a liquid inlet 21 and a liquid outlet 22. The liquid inlet 21 is arranged at the head end of the refrigerant tube 2 for the refrigerant to enter the refrigerant tube 2, and the liquid outlet 22 is arranged at the end of the refrigerant tube 2 for the refrigerant to be output outside the refrigerant tube 2, thereby realizing heat exchange of the refrigerant, which can be understood by those skilled in the art.

[0040] The above is a preferred embodiment of the present invention, which illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention, which is defined by the appended claims and their equivalents.

Claims

1. A novel fin, comprising a sheet body (11), characterized in that: The sheet body (11) is provided with a supporting protrusion (13), a supporting step (14), and a tube hole (12) for inserting a refrigerant tube (2). When the two groups of fins (1) are stacked, the supporting protrusion (13) of one group of fins (1) abuts against the supporting step (14) of the other group of fins (1) so that a gap for air to pass through is left between the two groups of fins (1).

2. The novel fin according to claim 1, characterized in that: The sheet body (11) is also provided with ventilation holes (15) to allow air to pass through the fin (1), and the ventilation holes (15) are in a plurality of groups and are evenly arranged on the end surface of the sheet body (11).

3. The novel fin according to claim 2, characterized in that: The sheet (11) is further provided with an air guide portion (16) for guiding air to flow toward the ventilation holes (15). The air guide portion (16) is arranged on the upper end surface of the sheet (11) and / or the lower end surface of the sheet (11). The air guide portions (16) are divided into several groups and are respectively arranged corresponding to the ventilation holes (15).

4. The novel fin according to claim 1, characterized in that: The tube holes (12) are arranged in a plurality of groups and spaced apart in the horizontal direction of the sheet body (11); the support protrusions (13) are arranged on one of the upper end surface and the lower end surface of the sheet body (11) and are located outside the tube holes (12); and the support steps (14) are arranged on the other of the upper end surface and the lower end surface of the sheet body (11) and correspond to the support protrusions (13).

5. The novel fin according to claim 1, characterized in that: The tube hole (12) is in the shape of a double-circular square, comprising a first hole portion (120), a second hole portion (121), and a third hole portion (122); the vertical projection of the first hole portion (120) is in the shape of a long strip and is located in the middle of the tube hole (12); the vertical projection of the second hole portion (121) is in the shape of a semicircle and is located on the left side of the tube hole (12) and is connected to the first hole portion (120); the vertical projection of the third hole portion (122) is in the shape of a semicircle and is located on the right side of the tube hole (12) and is connected to the first hole portion (120); the supporting protrusion (13) and the supporting step (14) are respectively arranged around the periphery of the second hole portion (121) and / or the periphery of the third hole portion (122); The supporting protrusion (13) comprises a protruding connecting portion (130) for connecting the supporting protrusion (13) to the sheet body (11), and a protruding supporting portion (131) for supporting the supporting protrusion (13) to abut against the supporting step (14). The protruding connecting portion (130) extends outward from the end surface of the sheet body (11). The horizontal projection of the protruding supporting portion (131) is trumpet-shaped, and its radial dimension gradually increases from the end surface of the sheet body (11) in an outward direction. The supporting step (14) is recessed inward from the end surface of the sheet body (11).

6. The novel fin according to claim 5, characterized in that: The radial dimension of the end of the raised support portion (131) is A, the radial dimensions of the second hole portion (121) and the third hole portion (122) are the same and are both a, wherein a<A, and the radial dimension of the root of the support step (14) is B, wherein A<B.

7. The novel fin according to claim 1, characterized in that: The vertical projection of the sheet body (11) is square, circular or polygonal, and the tube holes (12) are arranged to extend in the horizontal direction of the sheet body (11), or the tube holes (12) are arranged to extend in the vertical direction of the sheet body (11).

8. The novel fin according to claim 1, characterized in that: The sheet body (11) is made of aluminum metal or copper metal, and the supporting protrusion (13), the supporting step (14) and the sheet body (11) are integrally formed, or the supporting protrusion (13) and the sheet body (11) are separately provided.

9. A heat exchanger, characterized in that: It comprises a refrigerant tube (2) and a fin (1) as claimed in any one of claims 1 to 8, wherein the plurality of groups of fins (1) are stacked and arranged in sequence to form a fin group, and the refrigerant tube (2) is inserted into the fin group through a tube hole (12) of the fin (1).

10. The heat exchanger according to claim 9, characterized in that: The refrigerant pipe (2) is formed by bending a single pipe fitting. The refrigerant pipe (2) is an aluminum pipe or a copper pipe. The refrigerant pipe (2) is provided with a liquid inlet (21) and a liquid outlet (22). The liquid inlet (21) is provided at the head end of the refrigerant pipe (2), and the liquid outlet (22) is provided at the end end of the refrigerant pipe (2).

Images