JPS5855686A - Heat exchanger utilizing flat type heat pipes - Google Patents

Abstract

PURPOSE:To reduce the size of a heat exchanger of the type recovering waste heat discharged from a domestic house or the like and to increase the heat transfer efficiency of the same, by arranging a plurality of flat type heat pipes having vent holes at their heat collecting sections and heat emitting sections in a plurality of stages in a casing, with corrugated plates made of a material having a high heat conductivity being interposed therebetween. CONSTITUTION:Vent holes 7 are formed at heat collecting sections A and heat emitting sections B of flat type heat pipes 1-3. These heat pipes 1-3 are placed in a casing 4 and corrugated plates 6a, 6b made of a metal having a high heat conductivity are interposed between the heat pipes 1-3. Further, the inner space of the casing 4 is divided into the heat collecting sections A and the heat emitting sections B by partition plates 5. With such an arrangement, if two fluids are passed in the opposite directions between the corrugated plates 6 at the sections A, B, heat is exchanged between the two fluids by the function of the heat pipes 1-3. Thus, it is enabled to reduce the number of component parts, to simplify the assembling operation, to reduce the size and to increase the heat transfer efficiency of the heat exchanger.

Description

[Detailed Description of the Invention] The present invention relates to a flat plate heat pipe heat exchanger that recovers waste heat during ventilation of houses, offices, and factories and waste heat of exhaust gas from various combustors. The object is to provide an air supply/exhaust heat exchanger that has a compact structure, is easy to install, and has a good heat exchange efficiency.

FIG. 1 shows the overall structure of the flat plate heat pipe heat exchanger of the present invention. In the same figure, 1.2.6 is the case 4
It is a flat heat pipe arranged in parallel with a certain gap inside the housing 4, and the inside of the housing 4 has a partition plate 5 perpendicular to it.
It is divided into a heat collecting part 1 and a heat radiating part 1. 6a
, 61:l is a corrugated plate interposed between the flat heat pipes 1, 2, and 6, which forms a ventilation path.

The corrugated plate 6a of the heat collecting part A is a heat collecting plate, and the corrugated plate 6b of the heat dissipating part B
has the function of a heat sink. In the above configuration,
The indoor air entering the heat collecting part AK from the direction shown by the arrow a is absorbed by the corrugated plate 6aK and discharged outdoors in the direction of the arrow A, and the fresh cold air from outside is introduced from the direction of the arrow C into the heat radiating part BK. % in the direction of arrow d by absorbing the heat radiation of the corrugated plate 6b.
released into the room.

FIG. 2 shows a flat plate heat pipe according to the present invention. This heat pipe consists of a rectangular sealed thin box made of a metal (such as aluminum) with good thermal conductivity, and one or more heat pipes are placed on the heat collecting side and the heat dissipating side B.
The illustrated one has two ventilation holes 7, and a heat medium liquid 8 (70 liters, alcohol, etc.) is accommodated inside.

The heat medium liquid 8 heated in the heat collection part B is evaporated and transferred to the heat radiation part B as shown by the arrow e.The heat transfer rate by this heat vibrator is two orders of magnitude higher than the thermal conductivity of copper or aluminum. It's even bigger. The ventilation hole 7 forms an air passage as shown by arrow g, and increases the contact area between the air and the heat vibrator.

FIG. 5 shows a corrugated plate interposed between the flat heat pipes 1 and 2.6. The corrugated plates 6a, 6b are made of metal (aluminum) with good heat conductivity, and are welded and fixed to one or both sides of the flat heat pipes 1, 2.5.

The shape of the waves is appropriately set in consideration of the contact area with air and the flow resistance. A perforated plate with punched holes may also be used.

4 and 5 show the internal structure of the flat heat pipe heat exchanger of the present invention. FIG. 4 is a horizontal sectional view of FIG. 1, with the corrugated plate 7 excluded. Figure 5 is a of Figure 4.
It is a vertical cross-sectional view of m-line. As shown in the figure, the inside of one housing 4 is divided into a heat collecting section A and a heat dissipating section sB, and the ventilation holes 7 form a vertical air passage.

Therefore, indoor air enters heat collection part A from the direction of arrow a and is discharged outdoors in the direction of arrow A, enters heat radiation part B from the direction of arrow C, and enters the outdoor air which is discharged into the busy room in the direction of arrow d. Heat is exchanged with fresh cold air through flat heat pipes 1, 2, and 5.

As described above, in the flat heat pipe heat exchanger of the present invention, flat heat pipes each having one or more ventilation holes 7 in the heat collection part A and the heat radiation part B are arranged in parallel with a certain gap between them. Since it has a structure in which the inside is divided into a heat collecting part A and a heat radiating part B by the partition plate 5, the following effects can be obtained. (1) Since it is composed of six parts: a flat IIIi type heat pipe, a corrugated plate, and a housing, the structure is simple and easy to manufacture and assemble, making it suitable for mass production. C) Capacity can be freely set by changing the quantity of flat heat pipes and corrugated plates of the same standard. (6) Since the overall structure is rectangular and compact, selection of the mounting position and installation work are easy.

[Brief explanation of drawings]

1m: Overall perspective view of the embodiment of the present invention. Figure 2 is a diagram showing the flat heat pipe of the present invention, (A) is a plan view, (B) is a side view, and (C) is a CD of 0). The right half of line sectional view, (A) is the EF line sectional view of (A) No. 6m: A diagram showing the corrugated plate of the present invention, and 0) is a plan view, (
B) (C) is a side view Figure 4: Horizontal sectional view of Figure 1 Figure 5: Vertical sectional view of GII line of Figure 4 [Symbols] 1, 2.6...Flat type heat nozzle, 4・
...Housing, 5...Partition plate, 6m, 6b...Corrugated plate,
7...Vent hole, 8...Heating medium liquid, A...Heat collecting part,
B, heat dissipation part 2 figure 3 flash 4 (Xl 5 figure

Claims (1)

[Claims] Flat plate heat pipes each having one or more ventilation holes in the heat collecting part and the heat dissipating part are arranged in parallel with a certain gap, and a corrugated plate made of a metal with good thermal conductivity is prepared by A flat plate heat pipe heat exchanger characterized in that the inside of the skeleton housing ρ is divided into a heat collecting part and a heat radiating part by a partition plate.