JP3561807B2 - Panel heat exchanger - Google Patents

Description

[0001]
[Industrial applications]
The heat exchanger for a panel of the present invention cools the inside of a control panel of an electric device or an electronic device, and relates to a compact device capable of cooling the inside without entering contaminated air outside the control panel. .
[0002]
[Prior art]
A number of devices such as inverters are installed in the control panel, generate a large amount of heat, and components such as semiconductors that are relatively weak to heat are frequently used. Therefore, it is necessary to cool the inside of the panel below a certain temperature. However, in places where there is a lot of dust and moisture on the outer periphery of the panel and the installation environment is poor, the inside and outside of the panel often cannot be cooled by ventilation. In such a case, the heat exchanger that cools the inside of the panel has a heat exchanger on the inside of the panel and a heat exchanger on the outside of the panel, which are provided separately and independently, and the respective headers are connected by piping to form a circulation path. In addition, heat exchange is performed by providing a blower fan to both heat exchangers.
[0003]
[Problems to be solved by the invention]
The conventional in-panel heat exchanger has disadvantages of lacking simplicity and compactness because two heat exchangers must be provided separately and independently, and a pipe forming a circulation path must be provided between them. .
Therefore, the present invention has the following configuration in order to solve the above-mentioned problem.
[0004]
[Means for Solving the Problems]
The present invention provides a single core 3 formed by contacting and fixing a fin 2 between a large number of tubes 1 and 1 arranged in parallel ,
A second tank 5 first tank 4 and the other end to which one end of each of the tube 1 that core 3 is communicated is communicated,
Pump means 6 for forcibly circulating the cooling liquid without phase change between the first and second tanks 4 and 5 via the plurality of tubes 1 ;
Bisects the core 3 into a first core portion 3a and the second core portion 3b, a first fan 7 Okoshifu in the thickness direction is arranged on the first core portion 3a, located on the second core portion 3b And a second fan 8 that winds in the thickness direction .
Wherein with the first core portion 3a is disposed in the panel of the control panel, etc., the second core portion 3b is the core 3 to be placed in panel outside is disposed through its panel body,
A heat exchanger for a board that cools the inside of the board such that the air that has been blown up and the cooling liquid inside and outside the board exchange heat so that the temperature inside the board approaches that outside the board .
In a preferred embodiment of the present invention, a partition 9 is provided at an intermediate portion in the longitudinal direction of one of the tanks to divide the tank into an inlet 10 and an outlet 11 in the longitudinal direction. The inlet 10 and the outlet 11 are connected via the pump means 6.
[0005]
【Example】
Next, each embodiment of the panel heat exchanger of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory schematic view of a first embodiment of the present invention, as viewed across a board body 12, and FIG.
In the heat exchanger of this embodiment, as shown in FIG. 2, corrugated fins 2 are interposed between a number of parallel flat tubes 1 and their cores 3 are fixed by brazing or soldering to each other between their contact portions. Is composed. Then, both ends of each tube 1 communicate with the inside of the second tank 5 and the first tank 4. Each of the tanks has an elongated box shape, and a tube plate is liquid-tightly joined to its opening. The second tank 5 is provided with a partition 9 at an intermediate portion in the longitudinal direction, thereby dividing the inside of the second tank 5 into an inlet 10 and an outlet 11 in the longitudinal direction. In this embodiment, the core 3 is divided into a first core portion 3a and a second core portion 3b at a longitudinal middle portion of the tube 1, and a first fan 7 is provided at a central portion of the first core portion 3a. The second fan 8 is arranged at the center of the portion 3b, and is configured to generate a wind in the thickness direction of the core.
[0006]
In addition, pipes communicating with the inside of the inlet portion 10 and the outlet portion 11 of the second tank 5 protrude outward, respectively, and these are connected to each other by a short pipe via the pump means 6.
As shown in FIGS. 1 and 2, the heat exchanger of the present invention penetrates the wall surface of the board main body 12 so that the first core portion 3a is inside the board and the second core portion 3b is outside the board. Placed in The first fan 7 blows air to the first core 3a, and the second fan 8 blows air to the second core 3b. Further, the inside is filled with the cooling water 13, and a circulation path of the cooling water 13 is formed between the second tank 5 and the first tank 4 via the pump means 6. That is, as shown in FIG. 2, the cooling water in the inlet 10 of the second tank 5 flows from the inlet 10 to the first tank 4 through a large number of tubes located above the partition 9. Makes a U-turn, and the tube group in the lower half of the partition 9 flows from the first tank 4 to the outlet 11. Then, cooling water is fed between the outlet 11 and the inlet 10 via the pump means 6, whereby a circulation path is formed in the entire system.
[0007]
Then, the air in the panel is exchanged with the cooling water 13 in the tubes by the first fan 7 to cool the air in the panel and to warm the cooling water 13. Then, outside the panel, the cooling water 13 in the heated tube is cooled by the second fan 8.
In the above embodiment, the pump means 6 is provided outside the second tank 5, but FIG. 3 is a second embodiment of the present invention in which the pump means 6 is provided inside the second tank 5, This is the same as in one embodiment.
[0008]
4 and 5 show another embodiment of the present invention. In this embodiment, a closing plate 14 is inserted at the center of the tubes in the parallel direction in place of the tube at that position, and both sides in the width direction are inserted. The pump means 6 is provided so as to protrude from the core 3 and to sandwich the partition 9 inside the upper tank. The first core portion 3a and the second core portion 3b are arranged on both surfaces of the closing plate 14, and the first fan 7 and the second fan 8 are provided respectively.
In the heat exchanger of this embodiment, as shown in FIG. 5, a through-hole matching the present heat exchanger is formed on the back side of the panel body 12, and the closing plate 14 contacts the hole edge of the through-hole.
By doing so, it is possible to completely separate the inside and outside of the board body 12. That is, it is possible to prevent the air inside and outside the board from slightly flowing through the center portion of the core 3, and to maintain the inside of the board completely clean. At this time, the gap between the closing plate 14 and the board body 12 and the gap between the tank outer periphery and the opening edge of the board body 12 are closed by appropriate packing. In FIG. 5, reference numeral 15 denotes a reserve tank, which is used to release the expanded amount to the reserve tank 15 when the cooling water thermally expands during use. A cap 16 is detachably attached to the reserve tank 15.
[0009]
[Action and Effect of the Invention]
In the panel heat exchanger of the present invention, one core 3 is divided into a first core portion 3a and a second core portion 3b, and the first fan 7 is provided in the first core portion 3a and the second fan portion is provided in the second core portion 3b. Since two fans 8 are arranged and each is arranged inside and outside the panel, one heat exchanger core cools the inside of the panel and separates the air flow inside the panel from the air flow outside the panel. can do. Thereby, it is possible to prevent dirty air outside the panel from entering the panel. Moreover, a compact heat exchanger having a simple structure can be provided at low cost.
According to the second aspect of the present invention, a partition 9 is provided in one of the tanks, whereby the tank is divided into an inlet 10 and an outlet 11, and the tank is communicated via the pump means 6. The configuration of the pump means 6 can be simplified as much as possible. That is, the inlet 10 and the outlet 11 are provided in one tank, and the pump means 6 communicating between them is sufficient, so that the piping can be made as short and simple as possible.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a heat exchanger according to a first embodiment of the present invention, as viewed across a panel main body 12. FIG.
FIG. 2 is a longitudinal sectional view of the main body 12 of the same board.
FIG. 3 shows a main part of a heat exchanger according to a second embodiment of the present invention.
FIG. 4 is a schematic perspective view of a heat exchanger according to a third embodiment of the present invention.
FIG. 5 is an explanatory diagram showing a use state of the embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Tube 2 Fin 3 Core 3a First core part 3b Second core part 4 First tank 5 Second tank 6 Pump means 7 First fan 8 Second fan 9 Partition 10 Inlet 11 Outlet 12 Board body 13 Cooling water 14 Closure plate 15 Reserve tank 16 Cap

Claims (3)

One core 3 formed by contacting and fixing a fin 2 between a number of tubes 1 and 1 arranged in parallel;
A first tank 4 to which one end of each tube 1 of the core 3 communicates, and a second tank 5 to which the other end communicates,
Pump means 6 for forcibly circulating the coolant without changing the phase between the first and second tanks 4 and 5 through the plurality of tubes 1 ;
The core 3 is divided into a first core portion 3a and a second core portion 3b, and the first fan 7 is disposed in the first core portion 3a and winds in the thickness direction, and is disposed in the second core portion 3b. And a second fan 8 that winds in the direction of its thickness.
The first core portion 3a is disposed in a panel such as a control panel, and the core 3 is disposed through the panel body such that the second core portion 3b is disposed outside the panel,
A heat exchanger for a board that cools the inside of the board so that the air that has been blown and the cooling liquid exchange heat inside and outside the board so that the temperature inside the board approaches that outside the board . In Claim 1, the partition 9 which bisects the tank into the inlet part 10 and the outlet part 11 in the longitudinal direction is provided in the longitudinal middle part of either one of the tanks,
A board heat exchanger in which the inlet 10 and the outlet 11 are communicated via the pump means 6. 2. The tube according to claim 1, wherein the tube is a flat tube, and the fins are formed of corrugated fins. A board heat exchanger that penetrates and has the first core 3a and the second core 3b provided on both sides of a closing plate 14 projecting on both sides in the thickness direction of the core 3 as boundaries.

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