JP2022036010A - Heat exchanger and air conditioner including the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger which is easy to install and can reduce a cost. SOLUTION: In a heat exchanger composed of a second fin unit 102 and a first fin unit 101, a second fin unit 102 is hit on a surface adjacent to a second fin unit 102 of the first fin unit 101. The second protrusion 104 that abuts the first fin unit 101 on the surface adjacent to the first fin unit 101 of the second fin unit 102 with the first protrusion 103 in contact with the first fin unit 102 is arranged at intervals. A stacking gap through which the first fluid flows is formed between the fin unit 101 of 1 and the fin unit 102 of the second. Since the first protrusion 103 and the second protrusion 104 do not have to be aligned, laminated and connected, the processing efficiency is improved and the number of protrusions is reduced, so that the cost can be reduced. [Selection diagram] FIG. 7

Description

The present invention relates to the technical field of air temperature adjustment, and particularly to a heat exchanger and an air conditioner including the heat exchanger.

Currently, heat exchangers are used in many facilities, and in particular, laminated fin heat exchangers are widely used in household air conditioners, car air conditioners, computers and various electric facilities. In the conventional laminated fin heat exchanger, protrusions for maintaining the pitch of the fins are provided, that is, the protrusions are provided on the adjacent fins, and then the protrusions of the adjacent fins are laminated and connected to each other. Achieve the fin pitch of. However, it is difficult for the protrusions of adjacent fins to overlap as expected due to deviations in processing, assembly, etc., which lowers production efficiency and increases production costs.

An object of the present invention is to solve at least one of the technical problems existing in the prior art. Therefore, the present invention proposes a heat exchanger that is easy to install and can reduce costs.

The present invention further proposes an air conditioner equipped with the above heat exchanger.

The heat exchanger according to the embodiment of the first aspect of the present invention includes a first fin unit and a second fin unit, and the second fin unit is laminated with the first fin unit. At least one first protrusion that abuts on the second fin unit is formed on the surface of the first fin unit adjacent to the second fin unit, and the second fin unit is formed. At least one second protrusion that abuts on the first fin unit is formed on the surface adjacent to the first fin unit, and the first protrusion and the second protrusion are arranged at intervals. As a result, a stacking gap through which the first fluid flows is formed between the first fin unit and the second fin unit.

According to the heat exchanger of the embodiment of the first aspect of the present invention, it has at least the following beneficial effects. At least one first protrusion that abuts on the second fin unit is provided on the surface of the first fin unit adjacent to the second fin unit, and the first fin of the second fin unit is provided. At least one second protrusion that abuts on the first fin unit is provided on a surface adjacent to the unit, and the first protrusion and the second protrusion are arranged so as to be adjacent to each other at a distance. It is not necessary to align and stack and connect the protrusions of the fin unit, which is advantageous in improving the processing efficiency and reducing the number of the first protrusion and the second protrusion, which is advantageous for cost reduction.

According to some embodiments of the present invention, the first fin unit is formed with a plurality of first heat exchange pipelines through which the second fluid flows along the longitudinal direction of the heat exchanger. A plurality of second heat exchange pipelines through which the second fluid flows are formed in the second fin unit along the longitudinal direction of the heat exchanger, and the first protrusions are adjacent to each other. It is formed between the two first heat exchange pipelines and the second projection is formed between two adjacent second heat exchange pipelines.

According to some embodiments of the present invention, the first fin unit is formed with a plurality of the first protrusions along the longitudinal direction of the heat exchanger, and the second fin unit is formed with a plurality of the first protrusions. A plurality of the second protrusions are formed, and the first protrusions and the second protrusions are alternately provided.

According to some embodiments of the present invention, the vertical cross section of the first protrusion and / or the second protrusion is trapezoidal.

According to some embodiments of the present invention, the first protrusion is formed with a through groove along the lateral direction of the heat exchanger, and / or the second protrusion is formed with the heat. A through groove is formed along the lateral direction of the exchanger.

According to some embodiments of the present invention, at least one third protrusion is formed on the surface of the first fin unit away from the second fin unit, and the second fin unit is described. At least one fourth protrusion is formed on the surface away from the first fin unit.

According to some embodiments of the present invention, the first fin unit includes a laminated first fin and a second fin, and the second fin unit is a laminated third fin. And a fourth fin are included, the first fin and the third fin are provided next to each other, and the first protrusion is formed by press working on the first fin, and the second protrusion is formed. Is formed by pressing the third fin.

According to some embodiments of the present invention, a third protrusion is press-molded on the second fin and a fourth protrusion is press-molded on the fourth fin.

According to some embodiments of the present invention, a plurality of first heats in which a second fluid flows between the first fin and the second fin along the longitudinal direction of the heat exchanger. An exchange line is formed, and between the third fin and the fourth fin, a plurality of second heat exchange lines through which the second fluid flows along the longitudinal direction of the heat exchanger are formed. The first projection is formed between two adjacent first heat exchange pipelines and the second projection is formed between two adjacent second heat exchange pipelines. To.

The air conditioner according to the embodiment of the second aspect of the present invention includes the heat exchanger described in the embodiment of the first aspect of the present invention.

The air conditioner according to the embodiment of the second aspect of the present invention has at least the following beneficial effects. By using the heat exchanger according to the embodiment of the first aspect of the present invention, it is not necessary to align and stack the protrusions of the adjacent fin units and connect them, thereby improving the processing efficiency and the first protrusions. And the number of the second protrusions is reduced, which is advantageous for cost reduction.

Other aspects and advantages of the invention are described in part in the description below, some of which will be apparent from the description below or will be grasped through the practice of the invention.

Another aspect and advantage of the present invention will be apparent and easily understood from the description of the examples made with reference to the following drawings.
It is a schematic diagram of the partial structure of the heat exchanger of the embodiment of this invention. It is an isometric view of the partial structure of the heat exchanger of the embodiment of this invention. It is a bottom view of the 1st fin unit after disassembling the heat exchanger of the embodiment of this invention. It is a top view of the 2nd fin unit after disassembling the heat exchanger of the Example of this invention. It is a side view of the partial structure of the heat exchanger of the Example of this invention. It is an exploded side view of FIG. FIG. 4 is an exploded axonometric projection of FIG. 4. It is an exploded view of the heat exchanger of the Example of this invention. It is an exploded side view of the 1st fin unit of the Example of this invention. It is a partially enlarged view of the part B of FIG. FIG. 3 is a three-dimensional sectional view taken along the line AA of FIG. It is a partially enlarged view of the part C of FIG. It is a structural schematic diagram of the heat exchanger of the Example of this invention.

Hereinafter, embodiments of the present invention will be described in detail, the examples of the embodiments are shown in the drawings, and the same or similar reference numerals represent the same or similar components or components having the same or similar functions throughout the drawings. .. Hereinafter, the examples described with reference to the drawings are merely exemplary and are used only for interpreting the present invention and should not be understood as limiting the present invention.

In the description of the present invention, the description of the orientation, for example, the orientation or positional relationship indicated by the front, rear, top, bottom, left, right, inside, outside, etc., is based on the orientation or positional relationship shown in the drawings. It is for convenience and simplification of the description of the present invention, and does not necessarily indicate or suggest that such a device or component always has a specific orientation, or is configured or operated in a specific orientation. However, for this reason, it should not be understood as limiting the present invention.

In the description of the present invention, the first, second, third, and fourth are merely for the purpose of distinguishing technical features, indicating or suggesting relative importance, or implicitly indicating the number of technical features shown. It should not be understood as an implicit indication of the priority of the technical features shown or shown in.

In the description of the present invention, terms such as "installation", "provided", "attaching", "connecting", "assembling", and "fitting" should be understood in a broad sense unless expressly limited. A person skilled in the art can appropriately determine the specific definition of the above terms in the present invention based on the specific content of the technical proposal.

In some embodiments, as shown in FIG. 1, the heat exchanger of the embodiment of the first aspect of the present invention includes a first fin unit 101 and a second fin unit 102, and a second fin unit. The 102 and the first fin unit 101 are laminated and installed, and a first protrusion 103 that abuts on the second fin unit 102 is formed on the surface of the first fin unit 101 adjacent to the second fin unit 102. A second protrusion 104 that abuts on the first fin unit 101 is formed on the surface of the second fin unit 102 adjacent to the first fin unit 101, and the first protrusion 103 and the second protrusion 104 are formed. Are spaced apart so that a stacking gap 105 through which the first fluid flows is formed between the first fin unit 101 and the second fin unit 102. Further, FIG. 1 is a schematic partial structure diagram of the heat exchanger of one embodiment, in which the heat exchanger claimed by the present invention has at least the above technical features, and the number of heat exchangers is, for example, three. A plurality of first fin units 101 and a second fin unit 102 (see FIG. 12), such as four, five or more, are included, and the plurality of fin units are all arranged in a laminated manner. Further, the first fluid is air or a liquid substance, and as can be understood by those skilled in the art, the first fluid exchanges heat between the first fin 702 and the first fin 702. Further, at least one of the first protrusion 103 and the second protrusion 104 is provided, and usually, in order to provide a stable bearing capacity, the first protrusion 103 and the second protrusion 104 are both plural. It will be provided.

In some embodiments, the first fin 702 and the second fin 701 are fixed and connected by welding, and stitch welding is available as a welding method, wherein the first protrusion 103 and the second Both the contact portion with the fin unit 102 and the contact portion between the second protrusion 104 and the first fin unit 101 can be fixed and connected by stitch welding.

In some embodiments, as shown in FIGS. 7, 8, and 9, the first fin unit 101 is composed of a first fin 702 and a second fin 701, and the first fin 702 and the first fin 702. Fins 702 are laminated and installed, for example, the first fin 702 and the first fin 702 are fixed by a method such as stitch welding, and a concave groove 705 (not shown) is formed on the lower side of the first fin 702. A concave groove 705 is formed on the upper side of the second fin 701, and the concave groove 705 of the first fin 702 and the second fin 701 are provided so as to face each other, and the first fin 702 and the second fin are provided. When the 701 is fixed by welding, the first heat exchange line 201 is defined by the concave groove 705 of the first fin 702 and the second fin 701. The second fin unit 102 is composed of a third fin 703 and a fourth fin 704, and the third fin 703 and the fourth fin 704 are laminated and installed, for example, the third fin 703 and the fourth fin 704. Is fixed by a method such as stitch welding, a concave groove 705 (not shown) is formed on the lower side of the third fin 703, and a concave groove 705 is formed on the upper side of the fourth fin 704, and the third fin 703 is formed. Fins 703 and the groove 705 of the fourth fin 704 are provided to face each other, and when the third fin 703 and the fourth fin 704 are fixed by welding, the third fin 703 and the fourth fin 704 are fixed. The second heat exchange line 301 is defined by the concave groove 705 of the above. The number of heat exchange pipes in each fin unit may be arbitrary. The first heat exchange line 201 and the second heat exchange line 301 are prefabricated, and then fixed to the first fin unit 101 and the second fin unit 102 by a method such as welding. May be good.

In some embodiments, as shown in FIGS. 2 and 6, the heat exchanger includes an inlet collection hole 203 and an outlet collection hole 202, where the inlet collection hole 203 and the outlet collection hole 202 are fins, respectively. Located at both ends of the unit, when a plurality of fin units are stacked, the inlet collection hole 203 and the outlet collection hole 202 penetrate to form a tubular pipeline, and both ends of the heat exchange pipeline of each fin unit become tubular. They are connected to the inlet collection hole 203 and the outlet collection hole 202, respectively. For example, both ends of the first heat exchange pipe line 201 of the first fin unit 101 are connected to the inlet collection hole 203 and the outlet collection hole 202, respectively. Thereby, the second fluid can be circulated through the heat exchange pipeline, the inlet collection hole 203 and the outlet collection hole 202. The second fluid is a refrigerant such as water, chlorofluorocarbon, or oil. The constant circulation of the second fluid to the heat exchanger results in heat exchange between the second fluid and the first fluid, achieving the effect of freezing or heating. As those skilled in the art can understand, a plurality of inlet collection holes 203 and a plurality of outlet collection holes 202 at the ends of each fin unit may be provided, and between a plurality of inlet collection holes 203 or a plurality of outlet collection holes. The flow holes 202 communicate with each other via the throttle channel 204.

In the prior art, in order to obtain the stacking gap 105 shown in FIG. 1, a protrusion structure is provided for each of the adjacent fin units of the heat exchanger, and the protrusion structures of the upper and lower fin units are provided correspondingly. As described above, when the upper and lower fin units are fixedly connected, the facing surfaces of the protrusions of the upper and lower fin units overlap and abut, and the protrusions of the upper and lower units are connected by stitch welding. According to prior art, it is necessary to align the protrusions of the upper and lower fin units during welding, which is time consuming, and welding without alignment adversely affects the strength of the connection between the fin units and the quality of the heat exchanger. To spoil. Therefore, it takes a long time to align, and in the prior art, the surface of the heat exchanger is not flat when welded.

In the heat exchanger according to the embodiment of the present invention, the protrusions of the adjacent fin units are arranged at intervals, that is, the first fin unit 101 has a first protrusion 103 that abuts on the second fin unit 102. Is formed, and the second fin unit 102 is formed with a second protrusion 104 that abuts on the first fin unit 101, eliminating the need to abut and connect the protrusions of the upper and lower fin units. As a result, while simplifying welding touring, the first protrusion 103 directly contacts the second fin unit 102, and the second protrusion 104 directly contacts the first fin unit 101, so that the heat exchanger can be used. The flatness of the surface is improved, and the number of the first protrusions 103 and the second protrusions 104 is reduced, which is advantageous for cost reduction.

Further, in the prior art, when the protrusions are provided at symmetrical positions of the upper and lower fin units, the height of the protrusions is ½ of the pitch of the upper and lower fin units. If the protrusions of the upper and lower fin units are misaligned when the fin units overlap, the upper fin unit or lower fin unit should be properly lifted and positioned to align and overlap the protrusions of the upper and lower fin units. It is necessary to calibrate the misalignment, while according to the heat exchanger in the embodiment of the present invention, when the protrusions of the upper and lower fin units are misaligned, appropriate vibration is applied to the fin units to make the protrusions. It can be restored to its original position, thus greatly increasing production efficiency.

In order to more clearly explain the connection between the first fin unit 101 and the second fin unit 102, reference is made to FIGS. 3 (A) and 3 (B), and FIG. 3 (A) is a first fin. The bottom view (that is, the above figure) of the first fin unit 101 when the unit 101 and the second fin unit 102 are placed horizontally and the first fin unit 101 and the second fin unit 102 are separated is shown. 3 (B) shows the second fin unit 102 when the first fin unit 101 and the second fin unit 102 are placed horizontally and the first fin unit 101 and the second fin unit 102 are separated. The plan view of is shown. In the figure, the dotted line shows the correspondence between the first fin unit 101 and the second fin unit 102, and in the first fin unit 101, four first heat exchanges are performed along the longitudinal direction of the heat exchanger. A pipeline 201 is formed, in the second fin unit 102, four second heat exchange pipelines 301 are formed along the longitudinal direction of the heat exchanger, and the plurality of first protrusions 103 are adjacent to each other. It is located between the first heat exchange lines 201 of the book, and the plurality of second protrusions 104 are located between two adjacent second heat exchange lines 301. By providing in this way, it is possible to prevent the first protrusion 103 or the second protrusion 104 from adversely affecting the heat dissipation capacity of the heat exchange pipeline. The number of heat exchange pipelines formed in one fin unit may be two, three, or five or more, and by providing a plurality of heat exchange pipelines, the second fluid such as a refrigerant is finned. It is distributed more evenly in the unit, which is advantageous for improving the heat exchange performance of the heat exchanger.

In some embodiments, the cross section of the heat exchange pipeline is circular (see FIGS. 10 and 11) or polygonal, but may be optionally shaped as appropriate. For example, if the cross section of the heat exchange pipeline is circular, it is easy to process, and if the circumference of the outer circumference of the cross section is constant, the area of the circular cross section is the largest and the flow rate of refrigerant is large. However, the heat exchange capacity is good.

In some embodiments, as shown in FIGS. 1, 3 (A), 3 (B), when the first fin unit 101 and the second fin unit 102 are connected, the longitudinal length of the heat exchanger In the direction, the first protrusion 103 and the second protrusion 104 are provided alternately. By providing in this way, the connection strength between the first fin unit 101 and the second fin unit 102 can be improved, and the flatness of the surface of the heat exchanger can be improved.

In some embodiments, in the first fin unit 101, the first protrusion 103 is formed by pressing the first fin 702, and in the second fin unit 102, the second protrusion 104 is the third. It is formed by pressing the fins 703 of the above. By manufacturing the protrusion structure by press molding, it is possible to improve the production efficiency, reduce the production cost, and maintain the high quality of the product. The first protrusion 103 or the second protrusion 104 may be formed by another conventional method, and for example, the prefab block may be directly fixed and connected to the corresponding position of the fin unit.

In some embodiments, the longitudinal sections of the first projection 103 and the second projection 104 are trapezoidal, as shown in FIGS. 4, 5, and 9. On the other hand, the trapezoid is a press shape easily realized by press molding, and on the other hand, since it has a flat surface on the upper part of the trapezoid structure, the protrusions can be stably connected to the facing fin units. As will be obvious to those skilled in the art, the protrusion may be a structure such as a cube or a truncated cone. Further, if necessary, the first protrusion 103 and the second protrusion 104 may have different shapes.

In some embodiments, as shown in FIGS. 4, 5, and 11, a through groove 401 is formed in the first protrusion 103 along the lateral direction of the first fin 702, and the second projection 103 is formed. A through groove 401 is formed in the protrusion 104 along the lateral direction of the second fin 701. By providing the through groove 401 structure, the flow of the second fluid is facilitated and the heat exchange efficiency is enhanced. In general, the second fluid flows mainly along the lateral direction of the fin unit, and if the through groove 401 is not provided, the side portion of the second protrusion 104 becomes a resistance, and the second fluid becomes a resistance. It adversely affects distribution. In the process of manufacturing protrusions by press molding, in order to form the structure of the through groove 401, first two slits parallel to the press location are opened, and then force is applied to the area between the two slits to press. In this way, a protrusion structure including the through groove 401 is formed. If necessary, for example, in order to secure a certain structural strength, the through groove 401 may be opened only in the first protrusion 103 or the second protrusion 104.

In some embodiments, the first fin 702, the second fin 701, the third fin 703 and the fourth fin 704 are all integrally molded structures. Since the inlet collecting hole 203, the outlet collecting hole 202, the concave groove 705 and the protrusion of the fin can all be formed by pressing, the fin is obtained by press molding as a whole, and thus the production efficiency is increased and the process is high. Quality is ensured.

In some embodiments, the first fin 702, the second fin 701, the third fin 703 and the fourth fin 704 have the same structure and can be press-molded using the same die. In addition, in order to fix and connect a plurality of fin units, in addition to the protrusion structure provided on the adjacent surface of the two adjacent fin units, the protrusion structure is also provided on the opposite surface of the two fin units. It is provided. As shown in FIGS. 4, 5, and 7, the second fin 701 is provided with a third protrusion 205, and the fourth fin 704 is provided with a fourth protrusion 402. As can be seen from FIG. 7, the shapes of the second fin 701 and the third fin 703 are the same, the shapes of the first fin 702 and the fourth fin 704 are the same, and the shape of the first fin 702 is the same. And the shape of the third fin 703 are the same, and this technical proposal can be explained more clearly with reference to FIG. 3 (A), and FIG. 3 (B) shows the first fin 702 and the third fin 702. The shape of the fin 703 is shown, and when the first fin 702 is rotated 180 degrees clockwise or counterclockwise, the shape of the third fin 703 is obtained, and as can be seen from this, the first fin 702, The second fin 701, the third fin 703, and the fourth fin 704 may all be provided in the same shape. In such a case, the first fin 702, the second fin 701, and the third fin The 703 and the fourth fin 704 are press-molded by the same mold. According to the above configuration, the production efficiency of the heat exchanger can be further improved, the versatility and accuracy of the fins can be improved, and the quality of the entire heat exchanger can be improved.

In some embodiments, as shown in FIG. 12, a plurality of first fin units 101 and second fin units 102 are provided, and the plurality of first fin units 101 and second fin units 102 are provided. It is installed in layers. The position of the protrusion structure in the corresponding stacking gap 105 is the same, which improves the strength of the entire structure of the heat exchanger.

The air conditioner according to the second embodiment of the present invention includes the heat exchanger according to the first embodiment of the present invention. The air conditioner may be an integrated air conditioner, a separate air conditioner, or another type of air conditioner.

The air conditioner according to the second embodiment of the present invention is aligned and laminated before connecting the protrusions of adjacent fin units by using the heat exchanger according to the first embodiment of the present invention. As a result, the processing efficiency is increased, the number of the first protrusion 103 and the second protrusion 104 is reduced, which is advantageous for cost reduction. Furthermore, if the protrusions of the upper and lower fin units are misaligned when the fin units are overlapped, appropriate vibration can be applied to the fin units to restore the protrusions to their original positions, and the upper fins can be moved. There is no need to lift it up properly and relocate it, which greatly improves production efficiency.

Hereinafter, embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited to the above embodiments, and various changes are made within the knowledge of those skilled in the art without departing from the spirit of the present invention. It can be performed.

101 1st fin unit 102 2nd fin unit 103 1st protrusion 104 2nd protrusion 105 Stacking gap 201 1st heat exchange pipeline 202 Outlet collection hole 203 Inlet collection hole 204 Throttle channel 205 Third Protrusion 301 Second heat exchange pipeline 401 Through groove 402 Fourth protrusion 701 Second fin 702 First fin 703 Third fin 704 Fourth fin 705 Concave groove

Claims (10)

It ’s a heat exchanger,
The first fin unit and the second fin unit are included.
The second fin unit is installed so as to be laminated with the first fin unit.
At least one first protrusion that abuts on the second fin unit is formed on the surface of the first fin unit adjacent to the second fin unit, and the first of the second fin unit is formed. At least one second protrusion abutting the first fin unit is formed on the surface adjacent to the fin unit, and the first protrusion and the second protrusion are arranged at a distance from each other. A heat exchanger characterized in that a stacking gap through which a first fluid flows is formed between the first fin unit and the second fin unit. The first fin unit is formed with a plurality of first heat exchange pipelines through which the second fluid flows along the longitudinal direction of the heat exchanger, and the second fin unit has the heat. A plurality of second heat exchange pipelines through which the second fluid flows are formed along the longitudinal direction of the exchanger, and the first protrusion is between two adjacent first heat exchange pipelines. The heat exchanger according to claim 1, wherein the second protrusion is formed between two adjacent two heat exchange pipelines. Along the longitudinal direction of the heat exchanger, the first fin unit is formed with a plurality of the first protrusions, and the second fin unit is formed with a plurality of the second protrusions. The heat exchanger according to claim 1, wherein the first protrusion and the second protrusion are provided alternately. The heat exchanger according to claim 1, wherein the first protrusion and / or the vertical cross section of the second protrusion is trapezoidal. The first projection has a through groove formed along the lateral direction of the heat exchanger, and / or the second projection has a through groove along the lateral direction of the heat exchanger. The heat exchanger according to claim 1, wherein the heat exchanger is formed. At least one third protrusion is formed on the surface of the first fin unit away from the second fin unit, and at least on the surface of the second fin unit away from the first fin unit. The heat exchanger according to claim 1, wherein one fourth protrusion is formed. The first fin unit includes a first fin and a second fin laminated and installed, and the second fin unit includes a third fin and a fourth fin laminated and installed, and the first fin unit is included. The fin and the third fin are provided next to each other, the first protrusion is formed by pressing the first fin, and the second protrusion is formed by pressing the third fin. The heat exchanger according to claim 1, wherein the heat exchanger is made. The heat exchanger according to claim 7, wherein a third protrusion is press-molded on the second fin and a fourth protrusion is press-molded on the fourth fin. Between the first fin and the second fin, a plurality of first heat exchange pipelines through which the second fluid flows along the longitudinal direction of the heat exchanger are formed, and the third fin is formed. A plurality of second heat exchange pipelines through which the second fluid flows are formed between the fourth fin and the fourth fin along the longitudinal direction of the heat exchanger, and the first protrusions are adjacent to each other. 7. The seventh aspect of claim 7, wherein the second protrusion is formed between two adjacent first heat exchange pipelines, and the second protrusion is formed between two adjacent second heat exchange pipelines. Heat exchanger. An air conditioner comprising the heat exchanger according to any one of claims 1 to 9.

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