JPH0120538Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a heat exchanger that is easy to assemble and is used to prevent an increase in the internal temperature of an electrical equipment storage box such as a switchboard.

(Prior art) Because the internal temperature of large electrical equipment storage boxes can rise significantly due to the heat generated by the electrical equipment inside, a heat exchanger is often installed to dissipate heat to the outside air. Conventionally, the boxes were made of aluminum alloy. A type in which a large number of heat exchanger plates are stacked with spacers interposed around their peripheries, and heat exchange is performed by flowing internal air and outside air through the channels formed between these heat exchanger plates. It was used. (For example, Jikko 56
(Publication No. 13512) (Problem to be solved by the invention) However, the conventional heat exchanger in which heat exchanger plates are laminated with spacers interposed in this way is troublesome to assemble, and poor assembly accuracy may result in poor airtightness. Because of the problem of decreased heat exchange, there has been a need for a heat exchanger that is easy to assemble and has excellent airtightness.

(Means for Solving the Problems) The present invention was completed in order to solve the above-mentioned problems of the conventional art. A heat transfer plate that divides the inside of the frame member into two to form a shallow front chamber and a rear chamber, a heat transfer plate that covers the rear end opening of the frame member, and a side frame that faces the frame member. The front chamber side of one of the side frames, the rear chamber side of the opposite side frame, and one side of the front chamber side of the other opposing side frame. A plurality of heat exchanger units are stacked, each having a concave cutout for ventilation on the other side of the rear chamber side of the side frame opposite to the side frame, and the heat exchanger unit is located at the outermost side. This is characterized in that the front end of the frame member is closed with an end plate.

(Embodiment) Next, the present invention will be described in detail with reference to the illustrated embodiment. 1 includes side frame portions 5, 6 on opposite short sides and side frame portions 9, 10 on opposite long sides. It is a quadrilateral frame member made of molded synthetic resin, metal, etc., and a heat transfer plate 2 made of a material with excellent thermal conductivity such as an aluminum alloy is placed on the center surface of the frame member 1. It is embedded and held under tension to divide the inside of the frame member 1 into a shallow front chamber and a rear chamber,
A similar heat transfer plate 3 is also stretched and held at the rear end opening to cover the rear end opening. In the embodiment, the periphery of the heat transfer plate 2 is embedded in the frame member 1, and the periphery of the heat transfer plate 3 is held by adhering to the step 4 formed at the rear end opening of the frame member 1. The plates 2 and 3 can be held to the frame member 1 by any method other than embedding or adhesion.
It can also be sandwiched between two frame members 1, 1.
Further, in the front chamber side of one side frame part 5 of the frame member 1, that is, in the front part from the center surface, and in the back part of the side frame part 6, which is opposite to the side frame part 5, from the center surface, there are elongated recessed holes for ventilation. The parts 7, 8 are arranged in symmetrical positions. Also, a position near the side frame 6 on the front chamber side of one of the side frames 9 adjacent to these side frames 5 and 6, that is, a portion in front of the center plane, and a side frame opposite to the side frame 9. Elongated ventilation recesses 11 and 12 are also arranged in symmetrical positions near the side frame portion 5 on the rear chamber side of the air conditioner 10, that is, on the back side of the center plane. Therefore, the recessed part 11 of the side frame part 9 is located on the far side from the recessed part 7 of the side frame part 5, and the recessed part 12 of the side frame part 10 is located on the side far from the recessed part 7 of the side frame part 6. 8, and in this way each heat exchanger unit is constructed. A plurality of such heat exchanger units are stacked in the same direction as shown in the figure and fastened together with bolts or other fastening members 13 to form a heat exchanger. At this time, an end plate 14 such as one heat transfer plate is further attached to the front end of the frame member 1 on the nearest side, that is, the frame member 1 located on the outermost side.
shall be installed. Note that the number of laminated heat exchanger units can be freely determined depending on the required amount of heat transfer, and the fastening method is to form a concave part and a convex part in each frame member. A method of fitting these together, a method of applying an adhesive and pressing them together, etc. may be adopted.

(Function) As shown in FIG. 4, in the device configured as above, the side frame portion 5 is set in the center of the casing 17, which is provided with upper and lower fans 15, 16, with the side frame portion 5 facing downward, and then the electrical equipment is installed. If attached to the storage box 18,
Due to the suction force of the fan 16, the high-temperature internal air of the electrical equipment storage box 18 is sucked through the window hole 19 of the casing 17 and the recessed part 11 on the front chamber side of the side frame part 9, and the heat exchanger is removed from each stacked heat exchanger. It enters the front chamber formed by the heat transfer plates 2 and 3 of the appliance unit, passes through the recessed part 7 provided in front of the center surface of the side frame part 5, and is opened by the fan 16 to the electrical equipment storage box 18. will be returned to. On the other hand, the outside air is heat-transferred to each heat exchanger unit by the suction force of the fan 15 through the window hole 20 of the casing 17 and the recessed part 12 on the rear chamber side of the side frame part 10 opposite to the side frame part 9. It enters the rear chamber formed by the plates 2 and 3, passes through the recessed notch 8 provided on the rear chamber side of the opposing side frame 6, and is returned to the atmosphere by the fan 15. Heat exchange is performed between the internal air and the outside air via each heat exchanger plate 2, 3. Moreover, since the recessed notch 11 is located on the side far from the recessed notch 7 and similarly the recessed notch 12 is located on the side far from the recessed notch 8, the internal air and the outside air are connected to the side far from the recessed notches 11 and 12. Heat is exchanged while flowing in opposite directions toward the recesses 7 and 8, and the internal air is sufficiently cooled by the outside air, so the internal temperature of the electrical equipment storage box 18 is maintained within an appropriate range. . Furthermore, since each of the heat exchanger plates 2 and 3 is held in tension between the center surface and the rear opening of the frame member 1, it has excellent airtightness, and the number of laminated plates of such a heat exchanger unit can be adjusted as necessary. Since the heat transfer area can be freely changed by increasing or decreasing the heat transfer area, the electrical equipment storage box 18 can have a cooling capacity that corresponds to the amount of heat generated by the electrical equipment inside the electrical equipment storage box 18.

(Effects of the invention) As is clear from the above explanation, the invention has the following effects:
It is easy to assemble by simply stacking multiple heat exchanger units in the same direction and has excellent airtightness. Moreover, the heat transfer area can be freely changed by increasing or decreasing the number of stacked units. It is of great practical value as it solves the problems of conventional heat exchangers of this type.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway perspective view showing an embodiment of the present invention, Fig. 2 is a partially cutaway front view, Fig. 3 is a partially cutaway perspective view of the frame member, and Fig. 4 is a partially cutaway perspective view showing an embodiment of the present invention. FIG. 3 is a partially cutaway side view. 1: Frame member, 2, 3: Heat exchanger plate, 5, 6: Side frame portion, 7, 8: Recessed portion, 9, 10: Side frame portion, 11,
12: concave notch, 14: end plate.

Claims (1)

[Scope of utility model registration request] Band-shaped side frame parts 5, 6 and band-shaped side frame parts 9, 1
0 and a heat transfer plate 2 which divides the inside of the frame member 1 into two to form a shallow front chamber and a rear chamber, and covers the rear end opening of the frame member 1. A heat transfer plate 3 is stretched on the frame member 1, and a heat exchanger plate 3 is attached to the front chamber side of the side frame section 5, the rear chamber side of the side frame section 6, and the side frame section 6 on the front chamber side of the side frame section 9. Recessed recesses 7 and 8 for ventilation and recessed recessed parts 11 and 1 for ventilation are provided at positions close to the side frame portion 5 on the rear chamber side of the side frame portion 10.
The front end of the outermost frame member 1 is connected to the end plate 14.
A heat exchanger characterized in that it is blocked with.