JPH04122970U - Heat exchanger - Google Patents

Abstract

(57) [Summary] [Purpose] Since the dimensions can be set freely, a thin ventilation system can be obtained in which this is incorporated, and since the fluid can have a cross flow that is almost countercurrent, the heat exchange efficiency is high. Since it does not require complicated processing, it can be manufactured at low cost. [Structure] Heat exchange element 20 is formed by forming first, second, and third folded parts 17a to 17b having internal spaces on the side edges of metal plate 16.
The heat exchange elements 20 were stacked in the same direction so that the second folded parts 17b and the third folded parts 17c were arranged in a staggered manner when viewed from the same plane to form a laminate group 19. .

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is designed to prevent the intake of outdoor air and exhaust indoor air at the same time. This invention relates to a heat exchanger used in a ventilation system that can also exchange heat between air and exhaust air.

0002

[Conventional technology]

When ventilating the inside of a building, fresh air from outside is brought into the room, and dirty air is removed from the room. When ventilation is performed to exhaust indoor air to the outside, the heat that has been used for heating or cooling is used up. It ends up escaping with the exhaust gas, which is bad for energy efficiency. Therefore, ventilation When the device simultaneously takes in outdoor air and exhausts indoor air, There are some that allow more heat exchange between the two sides.

0003 Figure 7 shows an example, in which a heat pipe type heat exchanger 2 is arranged inside a case 1. The interior of the case 1 is divided by a partition plate 3 at the center of the heat exchanger 2, and one An outside air intake port 4a and an outside air intake port 4b are provided in one compartment, and an indoor exhaust intake port is provided in the other compartment. 5a and an exhaust outlet 5b. The heat exchanger 2 is arranged so as to straddle these two sections. Each compartment has a built-in sirocco-type fan 6, and an intake compartment. In the image, filter 30 is installed.

0004 Due to the action of the fan 6, indoor air enters the case 1 through the exhaust suction port 5a and is exhausted. The outside air exits from the air outlet 5b and is discharged outdoors, and the outside air enters the case 1 through the outside air intake port 4a. The outside air then exits from the outside air supply port 4b and is supplied into the room. This exhaust air and outside air are passed through the partition plate 3. Although they do not intersect in case 1, they do cross each other by heat pipe type heat exchanger 2. For example, if the exhaust air from the room has heat due to heating, this heat is Fresh outside air is transferred to the heat exchanger 2, which is then preheated before being brought into the room. It becomes.

[0005] In such a ventilation system, a rotary heat exchanger 7 is used as shown in Figure 8. There are some things. The heat exchanger 7 has a rotating shaft 9 connected to a driving shaft 8a of a driving electric motor 8. , a plurality of heat exchange blades 10 fixed radially at predetermined intervals are provided on this rotating shaft 9, and further Then, its outer circumference was covered with a cylindrical wind cylinder 11. The outside air that is inhaled is in the upper half as shown by arrow A. The exhaust from the room passes through the lower half as shown by the arrow B, but the electric motor 8 Since the heat exchange blade 10 is rotating in the direction of the arrow C, the heat exchange blade 10 is the upper half of the exhaust gas. Once the air is warmed, it moves to the lower half and uses this heated heat to warm the outside air.

[0006] Figure 9 shows another example of the ventilation system, which is also shown in Japanese Patent Publication No. 48-17177. In other words, the heat exchanger 12 includes spacer plates 13a and 13b having a sawtooth wave cross section between the partition plates 14. They are sandwiched alternately between the two. The spacing plate 13a and the spacing plate 13b are used to form waves. Arranged in alternating directions 90 degrees apart, each partitioned in a direction perpendicular to the direction of wave travel. A flow path is formed between the plates 14. In this way, arrow HO is the flow of indoor exhaust, If D is the flow of outside air intake, indoor exhaust air flows between the partition plates 14 formed by the spacer plates 13a. through the partition plates 14 formed by the outside air intake spacer plates 13b, and through the partition plates 14. Heat exchange takes place. In addition, although not shown, a honeycomb plate is also used as the spacer plate 13. A cross-shaped heat exchanger may be used in the same way as the spacing plates 13a and 13b.

[0007]

[Problem that the idea aims to solve]

In the ventilation system using the heat pipe type heat exchanger 2 shown in Fig. 7, this heat exchanger The cost of 2 itself is high, making the whole thing expensive. In addition, the rotary rotary shown in Figure 8 In a ventilation system using a type heat exchanger 7, the structure of the heat exchanger 7 is a rotating structure. Therefore, it is complicated and requires a lot of manufacturing and material costs. Moreover, between supply and exhaust There is a risk of leaks occurring. Heat exchanger 12 with crossed plates shown in Figure 9 In ventilation systems that use Therefore, the shape of the heat exchanger 12 itself is limited to a shape close to a square. The result As a result, there are significant design constraints.

[0008] The purpose of the present invention is to eliminate the inconveniences of the conventional example, and because dimensions can be set freely. A thin ventilator can be installed, and the fluid flows in a cross-flow direction that is nearly counter-current. Because it provides low heat exchange efficiency, it also does not require complicated processing. The purpose is to provide a heat exchanger that can be manufactured at low cost.

[0009]

[Means to solve the problem]

In order to achieve the above object, the present invention provides a first folded metal plate having an internal space at the side edge of the metal plate. Also, approximately half of the upper edge of the metal plate and approximately half of the lower edge, and opposite halves of the metal plate. Forming second and third folded parts having internal spaces on the sides, these first to third folded parts All parts are folded back in the same direction to form a heat exchange element, and this heat exchange element is folded in the same direction. The second folded parts and the third folded parts are arranged in a staggered manner when viewed on the same plane. The laminated plates are stacked one on top of the other to form a group of laminated plates. An elongated spacer/sealing material is pasted to partition the surface of the metal plate in the orthogonal direction, and The spacer/sealing material is located between the second and third folded parts, and the tip is a metal plate with a gap between them. The spacers and sealing materials are arranged alternately toward the center, and the spacers and sealing materials are The gist is that the laminates are stacked together in a staggered manner when viewed from a single plane. It is something.

0010

[Effect]

According to the present invention as set forth in claim 1, a large number of metal plates are arranged in a row to form a laminate group. If so, the folded parts between the metal plates will be joined together, and the entire sealed space between the metal plates will be closed to the airflow. It becomes a circulation space. Moreover, since these laminated plates are lined up in several ways, they can be used as heat exchangers. This results in extremely high heat exchange efficiency. Also, the size of the metal plates and the number of sheets to be arranged in a row. You can freely set the size of the heat exchanger itself by selecting the number of metal plates. It is easy to construct a laminate group by simply arranging sheets that have undergone simple bending processing. And it can be manufactured at low cost. In addition to this, simply changing the space thickness of the folded part will make it possible to Even if the metal plate has the same dimensions, it is possible to increase the heat transfer area.

[0011] According to the present invention as set forth in claim 2, in addition to the above-mentioned effect, the upper and lower edges of the metal plate are Since the spacers and sealants are arranged alternately between them, the above-mentioned communication space has no air flow. The flow becomes meandering, and since it is lined up in several streams, the heat exchange efficiency is further improved.

0012

【Example】

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Figure 1 shows the heat exchange of this invention. An exploded perspective view of the main parts showing one embodiment of the device, FIG. 2 is a plan view of the same, and FIG. 3 is a heat exchanger used. FIG. 3 is a perspective view of a conversion element. First, to explain the heat exchange element 20, as shown in FIG. , with internal spaces on both left and right edges of a metal plate 16 made of aluminum or copper with good thermal conductivity. The first folded portion 17a was formed by press working.

[0013] In addition, a second folding member having an internal space in about half of the upper edge and about half of the lower edge of the metal plate 16 is provided. The folded portion 17b and the third folded portion 17c are also formed by press working. The second folded part 17b and the third folded part 17c shall be provided on opposite halves of each other. Ta. Furthermore, these first to third folded parts 17a, 17b, and 17c are all folded in the same direction. This is in return.

[0014] Note that the second folded portion 17b and the third folded portion 17c are formed at the upper and lower edges of the metal plate 16. Although the missing part 22 occupies the half side, these second folded parts 17b and third folded parts 17c is formed without overlapping the end of the first folded part 17a, and the end of the first folded part 17a is open. I'll keep it as a mouthful.

[0015] As another embodiment, from within the first folded portion 17a, the surface of the metal plate 16 is moved in the orthogonal direction. An elongated spacer/sealing material 18 is pasted to partition the spacer. This spacer cum sea The material 18 is made of urethane, and multiple pieces are pasted with adhesive tape, etc. There is a gap between the second folded part 17b and the third folded part 17c, and the tip ends with the metal plate 16. They were arranged alternately toward the center.

[0016] In this way, the heat exchange element 20 has a second fold that combines with the first fold 17a. The turned part 17b and the third turned part 17c form an L-shaped baffle, and the spacer/sealing material 18 forms an L-shaped baffle. This constitutes a T-shaped baffle.

[0017] In the heat exchanger of the present invention, such heat exchange elements 20 are overlapped to form a laminate group 19. . To construct this laminate group 19, glue the folded parts 17a, 17b, and 17c with adhesive. How to join metal plates 16 together and how to spray coat adhesive on the sides after overlapping. Methods such as fixing by fixing can be adopted.

[0018] In addition, when forming the laminate group 19, the second folded parts 17b and the third folded part Make sure that the 17c and spacer/sealant 18 are lined up in a staggered manner when viewed on the same plane. , the folded parts 17b and 17c in the adjacent heat exchange elements 20 and the spacer/sealing material The arrangement of 18 was made to alternate left and right.

[0019] As shown in Figure 4, casings are attached to both sides of these laminate plate groups 19 and the chamber is However, it is partitioned by the second folded part 17b, the third folded part 17c and the missing part 22. A plate 23 is provided, and an upper air intake chamfer is provided outside the upper part of the laminated plate group 19 by this partition plate 23. The chamber 24a and the upper chamber 24b for exhaust are divided, and the lower part of the laminated plate group 19 is A lower chamber 25a for intake and a lower chamber 25b for exhaust are partitioned on the outside. to be accomplished.

[0020] A ventilation system is constructed using such a heat exchanger of the present invention, but the laminate group 19 The sealed space between the metal plates 16 is formed by the second folded portion on both sides of this laminated plate group 19. 17b and the missing part 22 of the third folded part 17c are connected to the chambers 24a, 24b, 25a, 25b. through, between the upper chamber 24a and the lower chamber 25a, and between the upper chamber 24b and the lower chamber. Air flow passages are formed between the chambers 25b. And shown in Figure 5 In this way, the upper chamber 24a and lower chamber 25a are connected to the intake air flow from outdoors to indoors. the upper chamber 24b and lower chamber 25b from inside the room. It was connected to the exhaust flow path (arrow G) to the outside. Although not shown, these intake A blower is installed in the flow path (H) and the exhaust flow path (G).

[0021] Next, to explain how to use it, exhaust air from the room is removed from the lower chimney by operating the blower. It enters the chamber 25b, flows between the metal plates 16 via the missing part 22, and enters the missing part 22. The gas flows out into the upper chamber 24b and is discharged. On the other hand, the intake of air from outdoors to indoors is Between the metal plates 16, the exhaust gas enters the chamber 24a and passes through the cutout 22. It passes between the metal plates 16 next to the metal plate 16 and exits to the lower chamber 25a through the cutout 22, and is supplied indoors. be provided.

[0022] These flows meanders because there is a spacer/sealing material 18 between the metal plates 16. becomes. The exhaust and intake air are separated by a partition plate 23 and a metal plate 16 and mixed. In addition, heat exchange is performed by the metal plate 16. In addition, exhaust and intake The meandering flow of Since the wall members 18 are arranged alternately on the left and right, the meandering pitch is half a pitch. This allows for efficient heat exchange.

[0023] Figure 6 shows a ventilation system that incorporates a fan into a unit, with the intake fan 26a installed in the upper These can be removed by connecting the exhaust fan 26b to the upper chamber 24b. The fans 26a and 26b are arranged side by side on the upper part of the laminated plate group 19 which is a heat exchanger, and one It is now driven by motor 27. Then, the exhaust flow path 28a from the room and the The intake channels 29a are installed on the sides of the laminated plate group 19, and the exhaust channels 28a and The air flow path 29a has an upper end as an inlet, and a lower end as an inlet with a lower chamber 25b and a lower chamber. It communicates with the side end of 25a. In addition, between the exhaust flow path 28a and the intake flow path 29a, The exhaust flow path 28b from the outside and the intake flow path 29b from the outside are connected to the exhaust fan 26b and the intake fan. 26a, and also connect filters to the exhaust flow path 28a and intake flow path 29b. Place 30.

[0024] Indoor air enters the laminated plate group 19 from the side exhaust flow path 28a through the lower chamber 25b. and is discharged from the upper chamber 24b to the exhaust flow path 28b. On the other hand, outdoor air It enters the laminated plate group 19 from the intake flow path 29b via the upper chamber 24a, and enters the lower chamber. -25a, and is supplied into the room via a side intake flow path 29a. You can configure it like this Therefore, the ventilation device becomes thin and small.

[0025]

[Effect of the idea]

As described above, the heat exchanger of the present invention has a large number of metal plates with a sealed space between the metal plates. The metal plates are arranged in rows to form a group of laminated plates. You can freely set the size of the heat exchanger itself by selecting the size and number of heat exchangers to be installed in a row. I can do that. Since the dimensions of the heat exchanger can be freely set, it can also be used as a ventilation device. The mold is what you get.

[0026] Furthermore, metal plates can be manufactured easily and inexpensively by simply bending them, and can be replaced easily. An inexpensive air device can also be obtained.

[0027] In addition, by placing a spacer and sealant, the entire airtight space between the metal plates is left empty. This creates a ventilation space with meandering airflow, and since it is lined up in multiple streams, the heat exchange efficiency is high. It also has good performance as a ventilation system.

[Brief explanation of drawings]

FIG. 1 is an exploded perspective view of essential parts showing one embodiment of a heat exchanger of the present invention.

FIG. 2 is a partial plan view showing one embodiment of the heat exchanger of the present invention.

FIG. 3 is a perspective view of a heat exchange element used in the heat exchanger of the present invention.

FIG. 4 is an overall perspective view showing one embodiment of the heat exchanger of the present invention.

FIG. 5 is a longitudinal cross-sectional side view of the heat exchanger of the present invention.

FIG. 6 is a front view showing an example of a ventilation system using the heat exchanger of the present invention.

FIG. 7 is a partially cutaway front view showing a conventional example.

FIG. 8 is a perspective view of main parts showing another conventional example.

FIG. 9 is a perspective view of main parts showing still another conventional example.

[Explanation of symbols]

1... Case 2... Heat exchanger 3... Partition plate 4a... Outside air intake port 4b... Outside air supply port 5a... Exhaust air intake port 5b... Exhaust outlet 6... Fan 7... Heat exchanger 8... Electric motor 8a... Drive shaft 9... Rotating shafts 10, 12... Heat exchange blades 11... Wind barrels 13a, 13b... Spacing plate 14... Partition plate 16... Metal plate 17a... First folded part 17b... Second folded part 17c... Third folded part 18... Spacer/sealing material 19...Laminated plate group 20...Heat exchange element 22...Missing portion 23...Partition plate 24a, 24b...Upper chamber 25a, 25b...Lower chamber 26a, 26b...Fan 27...Motor 28a, 28b...Exhaust passage 29a , 29b...Intake flow path 30...Filter

Claims (2)

[Scope of utility model registration request] Claim 1: A first folded portion having an internal space is formed at the side edge of the metal plate, and the internal space is formed at about half of the upper edge of the metal plate and about half of the lower edge, which are opposite to each other. The second, having
A third folded portion is formed, and these first to third folded portions are all folded in the same direction to form a heat exchange element, and the heat exchange elements are folded in the same direction, and the second folded portion and the third folded portion are folded in the same direction. A heat exchanger characterized in that the folded parts are overlapped to form a group of laminated plates so that the folded parts are arranged in a staggered manner when viewed on the same plane. 2. A first folded portion having an internal space is formed at the side edge of the metal plate, and the internal space is formed at about half of the upper edge of the metal plate and about half of the lower edge, which are opposite to each other. The second, having
A third folded part is formed, and these first to third folded parts are all folded in the same direction, and an elongated spacer/sealing material that partitions the metal plate surface from inside the first folded part in the orthogonal direction. and the spacer/sealing materials are alternately arranged between the second and third folded parts with a gap between them so that the tips are directed toward the center between the metal plates to form a heat exchange element. , this heat exchange element is oriented in the same direction and the second
A heat exchanger characterized in that folded parts, third folded parts, and spacer-cum-sealing materials are stacked so as to be arranged in a staggered manner when viewed from the same plane to form a laminate group.