KR102248940B1 - Heat exchanger and method for manufacturing heat exchanger - Google Patents

Abstract

The present invention relates to a heat exchanger and a manufacturing method for manufacturing the same. A heat exchanger according to an embodiment of the present invention includes: a first flow path through which a first fluid passes; A second flow path through which a second fluid passes and is stacked with the first flow path, wherein the first fluid and the second fluid exchange heat with each other while passing through the first flow path and the second flow path, respectively, and One end and the other end of the first flow path and one end and the other end of the second flow path are arranged in a first direction, and the one end of the first flow path faces a direction parallel to the first direction, and the first fluid flows into the first flow path. 1 inlet is formed, and in a region adjacent to the other end of the first flow path on one side of the first flow path, a first outlet through which the first fluid introduced into the first flow path is discharged is formed, and The other end is provided with a second inlet facing a direction parallel to the first direction and through which the second fluid is introduced, and of the second flow path on the other side facing a direction opposite to the one side of the second flow path. A second outlet port through which the second fluid introduced into the second flow path is discharged may be formed in an area adjacent to the one end.

Description

Heat exchanger and heat exchanger manufacturing method {HEAT EXCHANGER AND METHOD FOR MANUFACTURING HEAT EXCHANGER}

The present invention relates to a heat exchanger and a method of manufacturing a heat exchanger for manufacturing the same.

In recent years, there are many days when the concentration of fine dust generated from China or domestically is high. These fine dusts react with other air pollutants (ozone, nitrogen dioxide, sulfur dioxide, etc.), causing or exacerbating various respiratory diseases (lung cancer, asthma, etc.) and cardiovascular diseases (stroke, heart disease, etc.), resulting in premature death May result.

However, the World Health Organization (WHO) estimates that indoor pollutants are about a thousand times more likely to pass to the lungs than outdoor pollutants. In addition, indoor air pollutants generally generate nitrogen dioxide and carbon monoxide in household items such as heating appliances, and formaldehyde and volatile organic compounds in building materials. Neglecting these indoor pollutants can cause chronic colds, cough, phlegm, and respiratory problems. Therefore, indoor ventilation is required even on days when the fine dust concentration exceeds the standard value.

In recent years, ventilation devices such as window-type air purifiers that can perform indoor ventilation without the introduction of external pollutants have been developed, and exhaust to prevent excessive consumption of energy to maintain an appropriate indoor temperature during ventilation. A heat recovery type ventilation device including a heat exchanger capable of exchanging heat between indoor air and incoming outdoor air has been used.

However, in the case of a plate-type heat exchanger of a cross-flow (cross-shaped) type generally used in a conventional heat recovery ventilator, cooling has an efficiency of about 50%, and heating has an efficiency of about 70%. Development of a heat exchanger with higher efficiency is required to prevent global warming and reduce costs.

The present invention is to provide a heat exchanger with improved heat exchange efficiency and a manufacturing method for manufacturing the same.

The present invention is to provide a heat exchanger that is easy to manufacture and a manufacturing method for manufacturing the same.

The problem to be solved by the present invention is not limited thereto, and other problems that are not mentioned will be clearly understood by those skilled in the art from the following description.

The present invention provides a heat exchanger. The heat exchanger of the present invention comprises: a first flow path through which a first fluid passes; A second flow path through which a second fluid passes and is stacked with the first flow path, wherein the first fluid and the second fluid exchange heat with each other while passing through the first flow path and the second flow path, respectively, and One end and the other end of the first flow path and one end and the other end of the second flow path are arranged in a first direction, and the one end of the first flow path faces a direction parallel to the first direction, and the first fluid flows into the first flow path. 1 inlet is formed, and in a region adjacent to the other end of the first flow path on one side of the first flow path, a first outlet through which the first fluid introduced into the first flow path is discharged is formed, and The other end is provided with a second inlet facing a direction parallel to the first direction and through which the second fluid is introduced, and of the second flow path on the other side facing a direction opposite to the one side of the second flow path. A second outlet port through which the second fluid introduced into the second flow path is discharged may be formed in an area adjacent to the one end.

A heat exchanger according to an embodiment of the present invention includes a heat transfer unit for transferring heat between a first fluid and a second fluid, and a case surrounding the heat transfer unit, wherein a plurality of three or more heat transfer units are spaced apart from each other. A heat exchange plate that is stacked to be; And a connecting portion connecting the heat exchange plates to each other, and alternately blocking one end and the other end of the space between each of the heat exchange plates in an upward direction, wherein the case has a surface corresponding to the one end and the other end, respectively, is opened, A first opening is formed in an area adjacent to the other end of the heat exchange plate on one side, and a first opening is formed in an area adjacent to the one end of the heat exchange plate on the other side facing the opposite direction to the one side. A second opening is formed.

A first cover is coupled to the first opening, a second cover is coupled to the second opening, a region corresponding to a part of the interspace of the first cover and another part of the interspace of the second cover An area corresponding to is opened, and the part and the other part may be alternately provided along the direction in which the heat exchange plate is stacked.

A first protrusion protruding toward the other part of the interspace is formed in a region corresponding to the other part of the interspace of the inner surface of the first cover, and among the interspace of the inner surface of the second cover In a region corresponding to the part, a second protrusion protruding toward the part of the interspace may be formed.

It is provided in the interspace, may further include a spacing unit for maintaining the gap between the interspace.

The spacing unit may include a first frame and a second frame extending in one direction from one end of the first frame; The longitudinal direction may be provided in the same direction as the first frame based on the second frame, and may be spaced apart from the second frame at a predetermined interval.

A guide frame may be provided between the first frame and the third frame, spaced apart from the first frame and the third frame, and having a length direction parallel to the first frame.

A plurality of guide frames may be provided to be spaced apart from each other.

Side blocking portions extending upward to the nearest heat exchange plate are provided on both sides of the heat exchange plate except for the highest heat exchange plate among the heat exchange plates, and each of the side blocking portions alternately according to the stacking order of the extending heat exchange plates. An area corresponding to the first opening or an area corresponding to the second opening may be provided to be opened.

The heat exchange plate may be made of various materials having good thermal conductivity, including aluminum or pulp.

In addition, the present invention provides a method of manufacturing the above-described heat exchanger. According to an embodiment, a method of manufacturing a heat exchanger includes: a heat transfer unit manufacturing step of manufacturing the heat transfer unit; Including a case coupling step of inserting and coupling the heat transfer unit into the case, wherein in the manufacturing step of the heat transfer unit, plate-shaped raw materials having a length equal to or greater than a length to which both the heat exchange plate and the connection part are connected to each other are perpendicular to each other. And a raw material folding step of alternately folding two or more times in a zigzag direction along an upper direction so as to form a plurality of layers spaced apart by a length and having the same length as the heat exchange plate.

In the raw material folding step, before performing each fold of the raw material, on the layer folded just before, the layer folded immediately before is pressed along a line to be folded, and a holding member having a thickness corresponding to the vertical length of the connection portion is seated. I can make it.

The heat exchanger may further include a spacing unit provided in the interspace and maintaining a gap between the interspace, and the holding member may be provided as the spacing unit.

The heat transfer unit further includes side blocking portions extending upwardly to the nearest heat exchange plate on both sides of the heat exchange plate excluding the highest heat exchange plate among the heat exchange plates, and each of the side blocking portions extending the heat exchange plate The regions corresponding to the first opening or the regions corresponding to the second opening are alternately opened according to the stacking order of the raw material, and in the raw material folding step, the edge of the layer folded immediately before each fold of the raw material is performed. An area of the area other than the area corresponding to the side blocking portion may be cut.

In the raw material folding step, the area corresponding to the side blocking portion may be vertically folded in an upward direction.

The heat exchanger according to an embodiment of the present invention may have high heat exchange efficiency without mixing the exhaust air and the intake air.

The heat exchanger according to an embodiment of the present invention is easy to manufacture.

1 is a side cross-sectional view schematically showing the heat exchanger of the present invention.
FIG. 2 is a cross-sectional plan view schematically illustrating the first flow path of FIG. 1.
3 is a cross-sectional plan view schematically illustrating a second flow path of FIG. 1.
4 is a perspective view showing a heat exchanger according to an embodiment of the present invention.
5 is a perspective view showing the heat transfer unit of FIG. 4.
6 is a perspective view showing one side of the case of FIG. 4 to be seen.
7 is a perspective view showing the other side of the case of FIG. 6 so as to be visible.
8 is a perspective view showing the first cover of FIG. 7 so that the outer surface thereof is visible.
9 is a perspective view showing the first cover of FIG. 8 so that the inner surface thereof is visible.
10 is a perspective view showing the second cover of FIG. 7 so that the inner side thereof is visible.
FIG. 11 is a diagram illustrating a direction in which a first fluid and a second fluid passing through a space between adjacently stacked heat exchangers of FIG. 4 are moved.
12 is a side view showing a heat transfer unit according to another embodiment of the present invention.
13 is a perspective view showing an inner side of the first cover corresponding to the heat transfer unit of FIG. 12.
14 is a view showing a state in which a plurality of heat exchangers of FIG. 4 are stacked on each other.
15 is a flow chart showing a method of manufacturing a heat exchanger according to an embodiment of the present invention.
16 and 17 are side views sequentially showing an example of a process of folding raw materials in the raw material folding step of FIG. 15.
18 is a perspective view showing a spacing unit provided in a heat exchanger according to another embodiment of the present invention.
19 is a side view showing one side of the heat transfer unit provided with the spacing unit of FIG. 18.
FIG. 20 is a side view showing the other side of the heat transfer unit of FIG. 19.
FIG. 21 is a view showing a path of a fluid passing through a space between heat exchange plates provided with a spacing unit of FIG. 18.
22 is a perspective view showing a heat transfer unit provided in a heat exchanger according to another embodiment of the present invention.
23 is an exploded view of the heat transfer unit of FIG. 22.
FIG. 24 is an enlarged view of an enlarged area A of FIG. 22.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. The embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the following embodiments. This embodiment is provided to more completely describe the present invention to those with average knowledge in the art. Therefore, the shape of the element in the drawings is exaggerated to emphasize a more clear description.

1 is a side cross-sectional view schematically showing a heat exchanger 10 of the present invention. FIG. 2 is a cross-sectional plan view schematically illustrating the first flow path 100 of FIG. 1. 3 is a cross-sectional plan view schematically illustrating the second flow path 200 of FIG. 1. 1 to 3, the present invention provides a heat exchanger (10). The heat exchanger 10 includes a first flow path 100 and a second flow path 200.

The first fluid 1 passes through the first flow path 100. The second fluid 2 passes through the second flow path 200. The first flow path 100 and the second flow path 200 are stacked on each other. One end and the other end of the first flow path 100 and one end and the other end of the second flow path 200 are arranged in the first direction.

The first fluid 1 and the second fluid 2 exchange heat with each other while passing through the first flow path 100 and the second flow path, respectively.

A first inlet 110 through which the first fluid 1 flows is formed at one end of the first flow path 100 while facing a direction parallel to the first direction. In a region adjacent to the other end of the first flow path 100 on one side of the first flow path 100, a first outlet 120 through which the first fluid 1 introduced into the first flow path 100 flows out is formed.

A second inlet 210 through which the second fluid 2 flows is formed at the other end of the second flow path 200 while facing a direction parallel to the first direction. In an area adjacent to one end of the second flow path 200 on the other side of the second flow path 200 facing the direction opposite to that of the second flow path 200, the second fluid 2 flowing into the second flow path 200 flows out. Outlet 220 is formed.

Accordingly, the first fluid 1 and the second fluid 2 exchange heat in a counterflow manner with each other in a partial section of the first flow path 100 and a partial section of the second flow path 200, respectively.

The heat exchanger 10 according to the embodiment of the present invention may be applied to a heat recovery type ventilation device such as a window type air cleaner. For example, the heat exchanger 10 is provided in a window-type air purifier installed on a window, and the air introduced from the outside to the room by the window-type air purifier is the first fluid (1), and the indoor air purifier by the window-type air purifier The air flowing out from the outside may be the second fluid 2.

4 is a perspective view showing a heat exchanger 10a according to an embodiment of the present invention. Referring to FIG. 4, the heat exchanger 10a includes a heat transfer unit 1000 and a case 2000.

5 is a perspective view showing the heat transfer unit 1000 of FIG. 4. Referring to FIG. 5, the heat transfer unit 1000 transfers heat between the first fluid 1 and the second fluid 2. According to an embodiment, the heat transfer unit 1000 includes a heat exchange plate 1100 and a connection part 1200. According to an embodiment, the heat exchange plate 1100 and the connection part 1200 may be provided integrally with each other. That is, the heat transfer unit 1000 is provided in a shape in which a heat exchange plate 1100 and a connection part () are combined with each other, and a plurality of layers are folded and stacked. In addition, the heat exchange plate 1100 and the connection part 1200 may be made of the same material.

A plurality of heat exchange plates 1100 are stacked so as to be spaced apart from each other. According to an embodiment, three or more heat exchange plates may be provided in an even number. The heat exchange plate 1100 is made of a material having high heat transfer efficiency. For example, the heat exchange plate 1100 may be made of aluminum (Al) or pulp. The pulp provided as a material of the heat exchange plate 1100 may be specially treated pulp to increase heat transfer efficiency used in a general cross-flow type plate heat exchanger.

The connection part 1200 connects the heat exchange plates 1100 to each other. The connection part 1200 alternately blocks one end and the other end of the space between each of the heat exchange plates 1100 along the upper direction. Accordingly, the connection part 1200 prevents the fluid in the interspace from flowing out to one end and the other end provided with the connection part 1200.

6 is a perspective view showing one side of the case 2000 of FIG. 4 to be seen. 7 is a perspective view showing the other side of the case 2000 of FIG. 6 to be seen. 6 and 7, the case 2000 surrounds the heat transfer unit 1000. In the case 2000, a surface corresponding to each of one end and the other end of the heat exchange plate 1100 is opened. In a region adjacent to the other end of the heat exchange plate 1100 on one side of the case 2000, a first opening 2100 through which the inside and outside are communicated is formed. A second opening 2200 is formed in a region adjacent to one end of the heat exchange plate 1100 on the other side facing the opposite direction to the one side of the case 2000, through which the inside and the outside are communicated. As described above, the case 2000 covers the heat exchange plate 1100 to block both sides of the space between the heat exchange plate 1100, and the first flow path 100 and the second flow path 100 and the second heat exchange plate 1100 together with the heat exchange plate 1100. A flow path 200 is formed. According to an embodiment, the spaces between the heat exchange plates 1100 may be alternately provided as the first flow path 100 and the second flow path 200 according to the direction in which the heat exchange plates 1100 are stacked. Hereinafter, it is assumed that the interspace positioned at the bottom of the interspace is provided as the first flow path 100 and alternately provided to the first flow path 100 and the second flow path 200 as it goes upward.

8 is a perspective view showing the first cover 3000 of FIG. 7 so that the outer surface thereof is visible. 9 is a perspective view showing the first cover 3000 of FIG. 8 so that the inner surface thereof is visible. 7 to 9, the first cover 3000 is coupled to the first opening 2100. According to an embodiment, the first cover 3000 may be provided in a plate shape. The first cover 3000 may be provided detachably to the first opening 2100. For example, the first cover 3000 may be provided detachably in a slide manner along slide grooves formed on the upper and lower surfaces of the first opening 2100. A region corresponding to a part of the space between the heat exchange plates 1100 of the first cover 3000 is opened. For example, a slit 3100 may be formed in each region corresponding to the part of the interspace of the first cover 3000.

A first protrusion 3200 protruding toward the other part of the interspace may be formed in an area corresponding to the other part of the interspace on the inner side of the first cover 3000. The first protrusion 3200 may be provided to engage an area exposed through the first opening 2100 of the other part of the interspace. By providing the first protrusion 3200, it is possible to more reliably prevent the second fluid 2 passing through the other part of the interspace from flowing out through the first opening 2100.

Here, some of the spaces between the heat exchange plates 1100 and the other parts may be alternately provided along the direction in which the heat exchange plates 1100 are stacked.

10 is a perspective view showing the second cover 4000 of FIG. 7 so that the inner side thereof is visible. 7 and 10, a second cover 4000 is coupled to the second opening 2200. According to an embodiment, the second cover 4000 may be provided in a plate shape. The second cover 4000 may be provided detachably from the second opening 2200. For example, the second cover 4000 may be detachably provided in a slide manner along slide grooves formed on the upper and lower surfaces of the second opening 2200. An area corresponding to the other part of the space between the heat exchange plate 1100 of the second cover 4000 is opened. For example, a slit 4100 may be formed in each region corresponding to the other part of the interspace of the second cover 4000.

A second protrusion 4200 protruding toward the part of the interspace may be formed in an area corresponding to the part of the interspace on the inner side of the second cover 4000. The second protrusion 4200 may be provided to engage an area exposed through the second opening 2200 of the part of the interspace. By providing the second protrusion 4200, it is possible to more reliably prevent the first fluid 1 passing through the part of the interspace from flowing out through the second opening 2200.

When the heat exchange plate 1100 is provided in an even number, as shown in FIGS. 8 to 10, the slit 3100 of the first cover 3000 and the second protrusion 4200 of the second cover 4000 are The first protrusion 3200 of the first cover 3000 and the slit of the second cover 4000 may be provided at opposite positions, and may be provided at positions facing each other.

FIG. 11 is a view showing a direction in which the first fluid 1 and the second fluid 2 are moved passing through a space between adjacently stacked heat exchangers 10a of FIG. 4. Referring to FIG. 11, the interspaces formed by the above-described structure and configuration are alternately provided to the first flow path 100 and the second flow path 200, so that the first fluid 1 and the second fluid 2 ) Exchange heat in a counterflow manner with each other in a partial section of the first flow path 100 and a partial section of the second flow path 200, respectively.

12 is a side view showing a heat transfer unit 1000a according to another embodiment of the present invention. 13 is a perspective view illustrating a first cover 3000a corresponding to the heat transfer unit 1000a of FIG. 12 so that the inner surface thereof is visible. Referring to FIGS. 12 and 13, unlike the case of FIG. 5, an odd number of heat exchange plates 1100 may be provided. The slit 3100 and the first protrusion 3200 of the first cover 3000a and the slit 4100 and the second protrusion 4200 of the second cover 4000a are formed in the space between the corresponding heat exchange plate 1100. It is provided in a position corresponding to a part provided alternately with each other and another part. In addition, the interspace that must be opened in the first opening 2100 and the interspace that must be blocked in the second opening 2200 are the same, and the interspace that must be blocked in the first opening 2100 and the second opening must be opened. Since the space between them is the same, the second cover 4000a may be coupled to the second opening 2200 with the first cover 3000a facing the vertical direction. In addition, the configuration for providing the first flow path 100 and the second flow path 200 of the heat exchanger to which the heat transfer unit 1000a of FIG. 12 is applied, and the first fluid 1 and the second fluid 2 are each first The configuration, structure, and function, such as a direction passing through the flow path 100 and the second flow path 200, may be the same as the heat exchanger 10a to which the heat transfer unit 1000 of FIG. 5 is applied.

14 is a view showing a state in which a plurality of heat exchangers 10a of FIG. 4 are stacked on each other. Referring to FIG. 14, a plurality of heat exchangers 10a may be provided to the ventilation apparatus such that a plurality of heat exchangers 10a are stacked on each other according to ventilation capacity required for the ventilation apparatus to be applied. In this case, the heat exchanger 10a may be fixed to each other in a stacked state by a fixed coupling member 6000 surrounding the entire edge of the stacked heat exchanger 10a. Alternatively, a plurality of heat exchangers 10a may be arranged in a lateral direction to each other. In addition, unlike this, a plurality of heat exchangers 10a may be partially stacked on each other, and some may be arranged in a lateral direction to each other.

Hereinafter, a method of manufacturing a heat exchanger according to an embodiment of the present invention will be described using the above-described heat exchanger.

15 is a flow chart showing a method of manufacturing a heat exchanger according to an embodiment of the present invention. 4 to 10 and 15, referring to FIG. 15, a method of manufacturing a heat exchanger includes a heat transfer unit manufacturing step (S10) and a case combining step (S20).

In the heat transfer unit manufacturing step (S10), the heat transfer unit 1000 is manufactured. According to an embodiment, the heat transfer unit manufacturing step (S10) may include a raw material folding step (S11).

16 and 17 are side views sequentially showing an example of a process of folding raw materials in the raw material folding step S11 of FIG. 15. 16 and 17, in the raw material folding step (S11), a plate-shaped raw material 4 having a length greater than or equal to the length to which both the heat exchange plate 1100 and the connection part 1200 are connected, is vertically connected to each other. It is alternately folded two or more times in a zigzag direction along the upper direction so as to form a plurality of layers spaced apart by a length and having the same length as the heat exchange plate 1100. For example, when the heat transfer unit to be manufactured is provided with 8 heat exchange plates 1100 as in the heat transfer unit 1000 of FIG. 5, the raw material is folded 7 times. According to an embodiment, the raw material 4, the heat exchange plate 1100, and the connection part 1200 may be provided with the same width.

The raw material 4 may be provided in a flexible material such as aluminum foil or pulp having a predetermined thickness, and may be provided in the raw material folding step S11 while being wound on a roll 3. The roll 3 is rotated while the raw material folding step S11 is performed, so that raw materials of a required length can be provided.

According to an embodiment, in the raw material folding step S11, the holding member 5 is seated on the folded layer immediately before each folding of the raw material is performed. The holding member 5 presses the layer folded just before along the line to be folded. Therefore, it is possible to fold the raw material to a more accurate length in the raw material folding step (S11). For example, the holding member 5 may be provided in a plate shape having a width corresponding to the heat exchange plate 1100 and a thickness corresponding to the vertical length of the connection part 1200. The holding member 5 is provided so as to have a sufficient mass to be pressed so that the layer folded immediately before moving does not move while the raw material folding step S11 is performed. According to an embodiment, the holding member 5 may be removed after the raw material folding step S11 is completed.

In the case bonding step (S20), the heat transfer unit 1000 manufactured in the heat transfer unit manufacturing step (S10) is inserted into the case 2000 to be coupled.

According to an embodiment, after that, the first cover 3000 and the second cover 4000 are coupled to the first opening 2100 and the second opening 2200, respectively.

In contrast, when the heat transfer unit to be manufactured includes seven heat exchange plates 1100 as shown in the heat transfer unit 1000a of FIG. 12, the raw material is folded 6 times in the raw material folding step S11. In addition, each configuration of the method of manufacturing a heat exchanger to which the heat transfer unit 1000a of FIG. 12 is applied may be the same as described above.

18 is a perspective view showing a spacing unit 5000 provided in a heat exchanger according to another embodiment of the present invention. 19 is a side view showing one side of the heat transfer unit 1000 provided with the spacing unit 5000 of FIG. 18. 20 is another side view showing the other side of the heat transfer unit 1000 of FIG. 19. 18 to 20, the heat exchanger may further include a spacing unit 5000. The spacing unit 5000 is provided in the space between the heat exchange plates 1100. In this case, the heat transfer unit 1000 may be provided in the same structure as in FIG. 5. Alternatively, the heat transfer unit may be provided in the same structure as in FIG. 12. The spacing unit 5000 may be made of the same material as the heat exchange plate 1100 and the connection part 1200. The spacing unit 5000 maintains the space between the spaces. The spacing unit 5000 maintains the space between the heat exchange plate 1100 and the connection part 1200 when it is difficult to maintain the shape in the case 2000 according to the material or thickness. According to an embodiment, the spacing unit 5000 includes a first frame 5100, a second frame 5200, and a third frame 5300. The first frame 5100, the second frame 5200, and the third frame 5300 may be provided with a thickness corresponding to the vertical length of the connection part 1200. The first frame 5100 and the third frame 5300 and the guide frame 5500 to be described below may be connected to each other by a connection frame 5400. The connection frame 5400 may be provided with a thickness thinner than that of the first frame 5100 and the second frame 5200 and the third frame 5300. The first frame 5100, the second frame 5200, and the third frame 5300, and the connection frame 5400 may be made of the same material.

The second frame 5200 extends in one direction from one end of the first frame 5100. The third frame 5300 is provided in the same longitudinal direction as the first frame 5100 with respect to the second frame 5200. The third frame 5300 is spaced apart from the second frame 5200 at a predetermined interval. A gap between the outer surface of the first frame 5100 and the outer surface of the third frame 5300 may be provided to correspond to the width of the heat exchange plate 1100.

In the spacing unit 5000 provided in the structure as described above, the first opening 2100 alternately in the area where the second frame 5200 and the third frame 5300 are spaced apart along the direction in which the heat exchange plate 1100 is stacked. Alternatively, it is disposed in the space between the heat exchange plates 1100 so as to correspond to the second opening 2200. Accordingly, the spacing unit 5000 is provided, so that the first frame 5100, the second frame 5200, and the third frame 5300 are provided with the first inlet 110 on the outer surface of the space between the heat exchange plate 1100. , By blocking the area excluding the areas corresponding to the first outlet 120, the second inlet 210 and the second outlet 220, separate first cover 3000 and second cover 4000 are not provided. May not. However, when the spacing unit 5000 is provided and the first cover 3000 and the second cover 4000 are provided, the first protrusion 3200 and the second cover 4000 are respectively provided with the first protrusion 3200 and the second cover 4000. The second protrusion 4200 may not be provided to prevent interference with the spacing unit 5000.

The spacing unit 5000 may be provided with the holding member 5 described above. Since the spacing unit 5000 is provided as the holding member 5, a separate holding member 5 is not required, and after the raw material folding step S11 is completed, the process of removing the holding member 5 may be omitted. have. Other methods of manufacturing the heat exchanger may be the same as those described above.

FIG. 21 is a diagram illustrating a path of a fluid passing through a space between the heat exchange plates 1100 provided with the spacing unit 5000 of FIG. 18. 18 and 21, according to an embodiment, a guide frame 5500 may be provided between the first frame 5100 and the third frame 5300. The guide frame 5500 may be spaced apart from the first frame 5100 and the third frame, and may be provided in a length direction parallel to the first frame 5100. The guide frame 5500 is provided to be spaced apart from the second frame 5200. According to an embodiment, the guide frame 5500 may be provided with the same length as the third frame 5300 or may be provided with a length longer than the third frame 5300. A plurality of guide frames 5500 may be provided to be spaced apart from each other. Since the guide frame 5500 is provided, the first fluid 1 or the second fluid 2 passing through the space between the heat exchange plates 1100 is compared with the case where the guide frame 5500 is not provided as shown in FIG. 11. After entering the space between, the straightness can be maintained for a longer distance. Accordingly, a section facing each other between the first fluid 1 and the second fluid 2 can be increased in a longer area. In addition, the guide frame 5500 may be provided with the same thickness as the first frame 5100, the second frame 5200, and the third frame 5300. In this case, since the guide frame 5500 is provided, the spacing of the spaces between the heat exchange plates 1100 can be more easily maintained. In addition, the guide frame 5500 may be made of the same material as the first frame 5100, the second frame 5200, and the third frame 5300.

22 is a perspective view showing a heat transfer unit 1000b provided in a heat exchanger according to another embodiment of the present invention. 23 is an exploded view of the heat transfer unit 1000b of FIG. 22. FIG. 24 is an enlarged view of area A of FIG. 22. In FIGS. 22 to 24, it is assumed that five heat exchange plates 1100 are provided for convenience of description. 22 to 24, the heat transfer unit 1000b may further include a side blocking part 1300.

The side blocking part 1300 is provided to extend to the heat exchange plate 1100 closest to the heat exchange plate 1100 in the upward direction except for the highest heat exchange plate 1100 among the heat exchange plates 1100. Each side blocking part 1300 is provided so that the area 1401 corresponding to the first opening 2100 or the area 1402 corresponding to the second opening are opened alternately according to the stacking order of the extending heat exchange plate 1100 . Therefore, when the side blocking part 1300 is provided, the first cover 3000 and the second cover 4000 may not be provided. However, when the side blocking part 1300 is provided and the first cover 3000 and the second cover 4000 are provided, the first protrusion 3200 is respectively provided on the first cover 3000 and the second cover 4000. And the second protrusion 4200 may not be provided to prevent interference with the side blocking portion 1300. In addition, when the side blocking part 1300 is provided, and the heat exchange plate 1100 and the connection part 1200 have sufficient support to maintain a space between the heat exchanger plate 1100 and the connection part 1200, the spacing unit 5000 may also not be provided.

When the side blocking part 1300 is provided, in the raw material folding step S11, areas 1401 and 1402 excluding the area corresponding to the side blocking part 1300 among the edge areas of the layer folded immediately before each time of folding the raw material. ) Is cut. In addition, when the side blocking unit 1300 is provided, in the raw material folding step S11, the area corresponding to the side blocking unit 1300 is vertically folded upward. In this case, when the holding member 5 having a size and shape corresponding to the heat exchange plate 1100 is placed on the upper surface of the layer folded immediately before, the area corresponding to the side blocking portion 1300 can be easily folded upward. have. Other manufacturing methods of the heat exchanger of this embodiment may be the same as those described above.

As described above, in the heat exchanger according to the embodiment of the present invention, since the first fluid 1 and the second fluid 2 form counterflow in some sections, it is higher than that of the conventional plate heat exchanger of the cross-flow method. It can have efficiency. Further, the heat exchanger according to an embodiment of the present invention is easy to manufacture because it can form a plurality of layers of flow paths by folding raw materials in zigzag without a plurality of parts or a plurality of processes.

The detailed description above is illustrative of the present invention. In addition, the above description shows and describes preferred embodiments of the present invention, and the present invention can be used in various other combinations, modifications, and environments. That is, changes or modifications may be made within the scope of the concept of the invention disclosed in the present specification, the scope equivalent to the disclosed contents, and/or the technology or knowledge in the art. The above-described embodiments are to describe the best state for implementing the technical idea of the present invention, and various changes required in the specific application fields and uses of the present invention are also possible. Therefore, the detailed description of the invention is not intended to limit the invention to the disclosed embodiment. In addition, the appended claims should be construed as including other embodiments.

1: first fluid 2: second fluid
3: roll 4: raw materials
5: holding member 10, 10a: heat exchanger
100: first flow path 110: first inlet
120: first outlet 200: second flow path
210: second inlet 220: second outlet
1000, 1000a, 1000b: heat transfer unit 1100: heat exchange plate
1200: connection 1300: side cut-off
2000: case 2100: first opening
2200: second opening 3000, 3000a: first cover
3100: slit 3200: first protrusion
4000, 4000a: second cover 4100: slit
4200: second protrusion 5000: spacing unit
5100: first frame 5200: second frame
5300: third frame 5400: connection frame
5500: guide frame 6000: fixed coupling member

Claims (16)

A heat transfer unit transferring heat between the first fluid and the second fluid,
Including a case surrounding the heat transfer unit,
The heat transfer unit,
A heat exchange plate stacked to be spaced apart from each other;
And a connecting portion connecting the heat exchange plates to each other, and alternately blocking one end and the other end of the space between each of the heat exchange plates along the upper direction,
The case,
A surface corresponding to each of the one end and the other end is opened,
In a region adjacent to the other end of the heat exchange plate on one side, a first opening through which the inside and outside communicate is formed,
In a region adjacent to the one end of the heat exchange plate on the other side facing the opposite direction to the one side, a second opening through which the inside and outside communicate is formed,
A first cover is coupled to the first opening,
A second cover is coupled to the second opening,
An area corresponding to a part of the interspace of the first cover and an area corresponding to another part of the interspace of the second cover are opened,
The part and the other part are alternately provided along the direction in which the heat exchange plate is stacked,
In a region corresponding to the other part of the interspace of the inner side of the first cover, a first protrusion is formed to protrude toward and engage with the other part of the interspace of the heat exchange plate,
In an area corresponding to the part of the interspace on the inner side of the second cover, a second protrusion is formed to protrude toward and engage with the part of the interspace of the heat exchange plate,
A heat exchanger having slide grooves formed on upper and lower surfaces of the first opening, and wherein the first cover is detachably provided in a slide manner along the slide grooves formed on the upper and lower surfaces of the first opening. delete delete delete The method of claim 1,
A heat exchanger provided in the interspace, further comprising a spacing unit for maintaining a spacing of the interspace. The method of claim 5,
The spacing unit,
The first frame,
A second frame extending in one direction from one end of the first frame;
A heat exchanger including a third frame having a longitudinal direction provided in the same direction as the first frame with respect to the second frame, and spaced apart from the second frame at a predetermined interval. The method of claim 6,
A heat exchanger provided with a guide frame spaced apart from the first frame and the third frame and parallel to the first frame in a length direction between the first frame and the third frame. The method of claim 7,
The guide frame is a heat exchanger provided to be spaced apart from each other. The method of claim 1,
Side blocking portions extending upwardly to the nearest heat exchange plate are provided on both sides of the heat exchange plate except for the highest heat exchange plate among the heat exchange plates,
Each of the side blocking portions is provided to open an area corresponding to the first opening or an area corresponding to the second opening alternately according to the stacking order of the extending heat exchange plates. The method of claim 1,
The heat exchanger plate is a heat exchanger provided with a material containing aluminum or pulp. The method of claim 1,
A heat exchanger further comprising a fixed coupling member surrounding the entire edge of the heat exchanger in which a plurality of heat exchangers are stacked on each other. In the method of manufacturing the heat exchanger of claim 1,
A heat transfer unit manufacturing step of manufacturing the heat transfer unit;
Including; a case coupling step of inserting and coupling the heat transfer unit into the case,
In the heat transfer unit manufacturing step,
A plate-shaped raw material having a length equal to or greater than the length to which both the heat exchange plate and the connection part are connected are separated from each other by a vertical length of the connection part and alternately in a zigzag direction along the upper direction to form a plurality of layers having the same length as the heat exchange plate. A method of manufacturing a heat exchanger comprising the step of folding the raw material folded more than once. The method of claim 12,
In the raw material folding step, before performing each folding of the raw material, on the layer folded immediately before, the layer folded immediately before is pressed along a line to be folded, and a holding member having a thickness corresponding to the vertical length of the connecting portion is seated. How to make a heat exchanger. The method of claim 13,
The heat exchanger is provided in the interspace, further comprising a spacing unit for maintaining the spacing of the interspace,
The holding member is a method of manufacturing a heat exchanger provided as the spacing unit. The method of claim 12,
The heat transfer unit further includes side blocking portions extending upwardly to the nearest heat exchange plate on both sides of the heat exchange plate except for the highest heat exchange plate among the heat exchange plates,
Each of the side blocking portions is provided to open an area corresponding to the first opening or an area corresponding to the second opening alternately according to the stacking order of the extending heat exchange plate,
In the raw material folding step, before performing each folding of the raw material, a region of the edge region of the layer folded just before excluding the region corresponding to the side blocking portion is cut. The method of claim 15,
In the raw material folding step, a method of manufacturing a heat exchanger in which an area corresponding to the side blocking portion is vertically folded in an upward direction.

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