JPH087254Y2 - Heat pipe heat exchanger - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heat pipe type heat exchanger used for waste heat recovery or air conditioning, for example.

2. Description of the Related Art As a heat exchanger of this type, for example, JP-A-58-55686 is used.
As disclosed in the publication, a corrugate in which waves are interposed so as to continue in the left-right direction between a horizontal pipe extending in the left-right direction and a heat-pipe-filled liquid-fluid-filled flat pipe and adjacent flat pipes. The fins and a pair of adjacent flat tubes are provided with a passage forming means that forms a high temperature gas passage and a low temperature gas passage extending in the front-rear direction so as to be arranged side by side. It is known that a single vertical partition plate is provided with a hole penetrating the flat tube.

Problems to be Solved by the Invention In the above heat exchanger, it is necessary to arrange all the flat tubes so that they penetrate the partition plate during the assembly work, and the assembly work of the flat tube and the partition plate is troublesome and time-consuming. , The heat exchanger was expensive.

An object of the present invention is to provide a heat pipe type heat exchanger which is simple in assembly work of the heat exchanger and inexpensive.

Means for Solving the Problems A heat pipe type heat exchanger according to the present invention is a flat pipe with a heat pipe working fluid filled in the upper and lower sides arranged in a horizontal direction,
Between each pair of flat tubes adjacent to each other, corrugated fins are interposed so that waves continue in the left-right direction, and between each pair of flat tubes adjacent to each other, a hot gas passage and a cold gas passage extending in the front-rear direction are provided. In the heat pipe type heat exchanger provided with the passage forming means formed so as to be arranged side by side, the passage forming means includes one of the pair of flat tubes and the corrugated fin corrugated crest or corrugated fin bottom portion. It is characterized in that it comprises a partition member which is interposed between the flat tubes and has a height equal to the width of the flat tubes obtained by subtracting the thickness of the corrugated fins from the gap between the pair of flat tubes. .

In the heat pipe type heat exchanger according to the present invention, the passage forming means is interposed between one of the flat tubes of each pair and either the corrugated head or the corrugated bottom of the corrugated fin and the flat tubes of each pair. The partition member has a height equal to the height of the corrugated fins minus the thickness of the corrugated fins and a length equal to the width of the flat tubes, so that when the flat tubes and corrugated fins are assembled during heat exchanger assembly work, At the same time, the partition member can be assembled to the flat tube.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the heat pipe heat exchanger is provided with parallel flat tubes 11 made of aluminum extruded shape and vertically extending at intervals. Upper and lower side plates 12 and 13 made of aluminum plates are arranged above the uppermost flat tube 11 and below the lowermost flat tube 11, respectively. Between the upper side plate 12 and the uppermost flat tube 11, between each pair of adjacent flat tubes 11 and between the lowest flat tube 11 and the lower side plate 13, waves are continuously made in a brazing sheet. The corrugated fins 14 are respectively interposed, and the aluminum plate partition members 15 are respectively interposed in the intermediate portions of the continuous waves of the corrugated fins 14.

As shown in FIG. 2, the flat tube 11 has a plurality of fluid passages 22 which are partitioned by a vertical partition 21 extending in the left-right direction and arranged in the width direction of the flat tube 11. A brazing sheet lid 23 is provided at one end of the fluid passage 22, and a brazing sheet header 24 is provided at the other end of the fluid passage 22.
At one end of the header 24, a heat pipe hydraulic fluid injection pipe 25 whose tip opening is closed is provided. Each of the corrugated fins 14 is formed of one sheet, and the whole is connected to one. A louver 16 is provided on each corrugated fin 14.

The partition member 15 has a V-shaped cross section, and has a height equal to the height obtained by subtracting the thickness of the corrugated fins 14 from the gap between the pair of flat tubes 11 and a length equal to the width of the flat tubes 11. Moreover, the upper side plate 12 and the uppermost flat tube 11, the adjacent flat tubes 11 of each pair, and the lowermost flat tube 11 and the lower side plate 13 are partitioned into two spaces.
That is, between the center of both ends of the upper side plate 12 and between the corrugated bottoms of the corrugated fins 14 immediately below the corrugated fins 14, the corrugated fins 14 of the pair of flat tubes 11 immediately below the center of both ends of the upper flat tube 11 are provided. A partition member (15) traverses between the corrugated bottoms of the corrugated corrugated and the corrugated corrugated bottoms of the corrugated fins (14) directly below the center between both ends of the lowest flat tube (11).

When assembling the heat exchanger, the flat tube 11 and the lid 23, the flat tube 11 and the header 24, and the header 24 and the injection tube 25 are assembled by caulking in advance. Then, as described above, the corrugated fin 14 and the partition member 15 are connected to the flat pipe 11
All members are put in a vacuum furnace in a state of being sandwiched by the side plates 12 and 13, and the entire contact area of each member is brazed to assemble the whole. Thereafter, the Freon 12 which is the heat pipe working liquid is injected from the injection pipe 25 before being closed, and then the opening of the injection pipe 25 is closed. The injected CFC is evenly distributed to each fluid passage 24 by the header 24.

As shown in FIG. 1, the assembled heat exchanger is housed in a casing 31, and a duct 34 having a high temperature gas passage 32 and a low temperature gas passage 33 is connected to the casing 31. Between the plate 12 and the uppermost flat tube 11, between adjacent pairs of flat tubes 11 and between the lowest flat tube 11 and the lower side plate 13, a high temperature gas passage on the left side of the partition member 15, Cold gas passages are formed on the right side.

When using the heat exchanger, the part of the flat tube 11 inside the hot gas passage forms the evaporation part of the heat pipe,
The part in the cold gas passage of 11 forms the condensing part of the heat pipe.

FIG. 3 shows another embodiment. In this embodiment, instead of the partition member 15 having a V-shaped cross section, a partition member 17 made of an extruded aluminum material having a T-shaped cross section is used.

FIG. 4 shows still another embodiment. The waves of the corrugated fins 14 in each of the above-described embodiments were straight when viewed from the plane, but in this embodiment, the waves are displaced by the predetermined length in the opposite directions to form a large number of openings. The so-called multi-entry type corrugated fin 18 is used.

Further, in each of the above-mentioned embodiments, the corrugated fins are connected one by one, but separate ones may be used on both sides of the partition member.

Effect of the Invention According to this invention, during the assembly work of the heat exchanger,
When the flat tube and the corrugated fins are assembled, at the same time, the partition member can be assembled to the flat tube, so that the assembly work can be easily performed and the inexpensive heat exchanger is provided.

[Brief description of drawings]

The drawings show an embodiment of the present invention, FIG. 1 is a perspective view including a crushed section, FIG. 2 is an enlarged perspective view showing a part of FIG. 1, and FIGS. 2 is a perspective view corresponding to FIG. 2 showing the embodiment of FIG. 11 …… Flat tube, 14,18 …… Corrugated fins, 15,17…
... Partition member.

Claims (1)

[Scope of utility model registration request] 1. Corrugated fins 14, which are interposed between flat pipes 11 containing heat pipe hydraulic fluid extending in the left-right direction and adjacent flat pipes 11 and a pair of adjacent flat pipes 11 so that waves continue in the left-right direction. A heat pipe type heat exchanger comprising 18 and a pair of adjacent flat tubes 11 and a passage forming means formed so that a high temperature gas passage and a low temperature gas passage extending in the front-rear direction are formed side by side. In the above, the passage forming means is interposed between one of the flat tubes 11 of each pair and either the corrugated heads or the corrugated bottoms of the corrugated fins 14 and 18 and the gap between the flat tubes 11 of each pair. A heat pipe type heat exchanger comprising partition members (15, 17) having heights obtained by reducing the thickness of corrugated fins (14, 18) and lengths equal to the width of flat tubes (11).