JP2000074413A - Heat exchanger unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat exchanger unit for preventing flame from spreading to a grill of a unit surface by allowing a flame to leap from a gap between an electrical equipment case and a heat exchanger. SOLUTION: A partition plate 9 is projected to a rear side of a cover integrally with an electrical equipment case cover 10 by screws or the like and previously mounted. A power source board 6 is set to inward side of a heat exchanger unit of an electrical equipment case 5, and a control board 7 is inserted and set to a heat exchanger unit outer side of the case 5. A switch 8 is mounted from its front at the case 5. The case 5 constituted in this manner is associated near the exchanger 3. Then, the plate 9 is projected to the rear side of the cover, and the cover 10 mounted integrally is mounted on a front surface of the case 5. At this time, the plate 9 is inserted between the case 5 and an exit/ entrance piping 4 of the exchanger 3 and installed so as to be a position indicated by a chain line (right side of the piping 4). Thus, a partition wall is formed between the case 5 and the piping 4 of the exchanger 3. A display of the switch 8 is engaged with a square hole 11 of the cover 11 and exposed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a heat exchange unit for an air conditioner.

[0002]

2. Description of the Related Art A front view and a side view of a heat exchange unit of an indoor unit of an air conditioner are shown in FIG. 2, wherein 1 is a heat exchange unit, 2 is a grill installed on the surface, and 3 is a heat exchanger. It is. An electrical box (not shown) is incorporated in the heat exchange unit 1 close to the heat exchanger 3.

FIG. 3 shows a disassembled state of the heat exchanger and the electrical box, with the grill 2 of the heat exchange unit 1 removed. In the figure, 3 is a heat exchanger, 4 is an inlet / outlet pipe, 5 is an electrical box, 6 is a power supply board, 7 is a control board, and 8 is a switch unit.

A power supply board 6 and a control board 7 are inserted and set in an electric box 5 to form an electric system. At this time, electrical box 5
The power supply board 6 is set on the inner side of the heat exchange unit (left side in the figure), and the outer side of the heat exchange unit in the electrical box 5 (right side in the figure).
The control board 7 is inserted and set. The switch unit 8 is attached to the electrical component box 5 from the front. The electrical component box 5 configured as described above is incorporated in the heat exchange unit near the heat exchanger 3.

[0005] In a conventional heat exchange unit of an air conditioner, no partition wall is provided between the electrical box and the heat exchanger. In addition, a gap for ventilation is provided on the side of the electrical component box. In such a configuration, an electric spark is generated from the power supply board and the electric components on the board, and in the case of a fire, the fire is scattered from the gap and may spread to the grill on the unit surface, which is dangerous. .

[0006]

SUMMARY OF THE INVENTION Accordingly, the present invention is directed to a power supply board and a fire based on the generation of electric sparks from electric components on the board, which causes a fire from a gap between an electrical box and a heat exchanger, and a unit surface. It is an object of the present invention to obtain a heat exchange unit for preventing a fire from spreading to a grill.

[0007]

In order to achieve the above object, a heat exchange unit according to a first aspect of the present invention is a heat exchange unit incorporating a heat exchanger and an electric box, which is integrally partitioned with an electric box cover. The board is designed to protrude to the back side of the lid,
By attaching the electrical box lid to the electrical box, a partition wall was formed between the electrical box and the heat exchanger inlet / outlet piping.

As described above, since the partition plate is provided in the operation of mounting the electrical box cover, the partition plate does not exist when the heat exchanger is mounted and the electrical box is mounted, so that the mounting operation is not hindered. Further, since a partition wall made of a partition plate exists between the inlet / outlet piping of the heat exchanger and the electrical component box, it is possible to prevent dew condensation adhering to the piping of the heat exchanger from scattering into the electrical component box.

A heat exchange unit according to a second aspect of the present invention is a heat exchange unit incorporating a heat exchanger and an electrical box, wherein the partition plate is provided integrally with the electrical box cover so as to protrude to the back side of the lid. By attaching a box cover to the electrical box, a partition wall is formed between the electrical box and the heat exchanger inlet / outlet piping, and the electrical box includes a power supply board and a control board.
An electrical system is configured by inserting and setting the electrical boards, a power board is set inside the heat exchange unit of the electrical box, and a control board is inserted and set outside the heat exchange unit of the electrical box. did.

[0010] As described above, in the power supply board of the two electrical boards, the risk of sparks and the like is higher because the high-voltage wiring and the voltage conversion component are present. Therefore, a more dangerous part is housed inside the heat exchange unit, and a partition plate is provided next to the part to prevent a spark. A non-hazardous substrate is stored outside the heat exchange unit. The side wall of the power supply board is an electric box, and a partition wall adjacent to the electric box surrounds the front corner part integrally with the electric box cover. By enclosing and shielding only the front corner portion, it is possible to completely prevent the spread of fire to the grill and also to prevent a reduction in the effect of ventilation to the board in the electrical box.

A heat exchange unit according to a third aspect of the present invention is a heat exchange unit in which a heat exchanger and an electrical box are assembled, wherein the partition plate is provided integrally with the lid of the electrical box so as to protrude to the back side of the lid. By attaching a box cover to the electrical box, a partition wall is formed between the electrical box and the heat exchanger inlet / outlet piping, and the electrical box includes a power supply board and a control board.
An electric system is constructed by inserting and setting the electric boards, a power supply board is set inside the heat exchange unit of the electric box, and a control board is inserted and set outside the heat exchange unit of the electric box. In the boundary area between the electrical box and the heat exchanger, the partition plate is disposed only in the portion where the power supply board is present and is shielded by the partition wall, and the partition wall is formed in the back of the heat exchange unit. The configuration was not provided.

In this manner, a fire that ignites from the inside of the electrical box is completely shielded by the electrical box and the partition plate in the boundary area between the electrical box, the heat exchanger and the decorative grill. The spread of fire near the front of the grill can be completely prevented, and the back of the heat exchange unit does not require a divider to keep the power supply away from the grill. It is structurally simple since it is only necessary to provide it in the second position.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heat exchange unit according to the present invention will be described with reference to FIG. 1, the same components as those in FIG. 3 are denoted by the same reference numerals. The heat exchanger 3 shows only a part of the right end. Reference numeral 4 denotes an inlet / outlet pipe of the heat exchanger, 5 denotes an electrical box, 6 denotes a power supply board, 7 denotes a control board, and 8 denotes a switch unit. Reference numeral 9 denotes a partition plate (partly indicated by a solid line, and partly indicated by a dotted line). Reference numeral 10 denotes an electric box cover, which covers the surface of the electric box 5. Reference numeral 11 denotes a square hole formed so that the display of the switch unit 8 is exposed on the electrical box cover 10. The partition plate 9 which is a feature of the present invention has, for example, a channel shape, and is attached to the electrical box cover 10 in advance so as to protrude to the rear side of the cover with screws or the like.

A power supply board 6 and a control board 7 are inserted and set in the electrical box 5 to constitute an electric system. At this time, electrical box 5
The power supply board 6 is set on the inner side of the heat exchange unit (left side in the figure), and the outer side of the heat exchange unit in the electrical box 5 (right side in the figure).
The control board 7 is inserted and set. The switch unit 8 is attached to the electrical component box 5 from the front. The electrical box 5 thus configured is assembled near the heat exchanger 3 as shown in FIG.

Next, the electrical box lid 10 with the partition plate 9 projecting to the back side of the lid and being integrally mounted is mounted on the surface of the electrical box 5. At this time, the partition plate 9 is inserted and installed between the electrical component box 5 and the inlet / outlet pipe 4 of the heat exchanger so that the partition plate 9 is located at a position indicated by a chain line (the right side of the inlet / outlet pipe 4). As a result, a partition wall is formed between the electrical box 5 and the inlet / outlet pipe 4 of the heat exchanger. The display section of the switch section 8 is fitted into the square hole section 11 of the electrical box cover 10 and is exposed.

Since the partition plate 9 is provided in the operation for mounting the electrical box cover 10, the partition plate 9 does not exist when the heat exchanger 3 is mounted and the electrical box 5 is mounted, and does not hinder the mounting operation. Further, since there is a partition wall formed by the partition plate 9 between the inlet / outlet pipe 4 of the heat exchanger 3 and the electrical equipment box 5, it is possible to prevent dew condensation adhering to the pipe of the heat exchanger 3 from scattering to the electrical equipment box 5.

Further, of the two electric boards, the power board 6
, The risk of sparks and the like is higher due to the presence of high voltage wiring and voltage conversion components. Therefore, more dangerous parts are stored inside the heat exchange unit,
Providing the partition plate 9 next to it can prevent sparks. Outside the heat exchange unit, a non-dangerous control board 7 is stored. The side wall of the power supply board 6 is a case of the electrical box 5, and a partition wall 9 next to the case covers the front corner integrally with the electrical box cover 10. By enclosing and shielding only the front corner portion in this way, it is possible to completely prevent the spread of fire to the grill and to prevent a reduction in the effect of ventilation to the board in the electrical box.

Further, in the boundary area between the electrical box 5, the heat exchanger 3, and the decorative grill 2, a fire from the power supply section in the electrical box is completely shielded by the electrical box 5 and the partition plate 9. And the spread of fire near the front of the grill can be completely prevented, and the back of the heat exchange unit does not need a partition plate to keep the power supply unit away from the grill.
Since the partition plate only needs to be provided on the front part, it is structurally simple.

[0019]

As described above, according to the present invention, since the partition plate is provided at the same time as the mounting operation of the electrical component box cover, the operation at the time of mounting the heat exchanger and the electrical component box becomes easy. Further, since the partition wall is formed by the partition plate, it is possible to prevent dew condensation adhering to the piping of the heat exchanger from scattering to the electrical box.

Further, the power supply board on which the high-voltage wiring and the voltage conversion component are present is housed inside the heat exchange unit, and a partition plate is provided next to the power supply board to surround and shield only the front corner portion. Thus, it is possible to realize a heat exchanger unit which can completely prevent the spread of the fire to the grill and can also ensure the effect of ventilating the board in the electrical box.

[Brief description of the drawings]

FIG. 1 is a mounting view of a heat exchange unit of the present invention.

FIG. 2 is a front view and a side view of a heat exchange unit of the indoor unit.

FIG. 3 is an exploded view of a heat exchanger and an electrical box.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Heat exchange unit of indoor unit 2 Crill 3 Heat exchanger 4 Inlet / outlet piping of heat exchanger 5 Electrical box 6 Power supply board 7 Control board 8 Switch section 9 Partition plate 10 Electrical box cover 11 Square hole

Claims (3)

[Claims] 1. A heat exchange unit incorporating a heat exchanger and an electrical box, wherein a partition plate is provided integrally with the electrical box cover so as to protrude to the back side of the lid, and the electrical box cover is attached to the electrical box. A heat exchange unit, wherein a partition wall is formed between the inlet and outlet pipes of the heat exchanger. 2. An electric box includes a power supply board and a control board.
The electrical system is configured by inserting and setting two electrical boards, the power board is set inside the heat exchange unit of the electrical box, and the control board is inserted and set outside the heat exchange unit of the electrical box. The heat exchange unit according to claim 1, wherein: 3. A structure in which the partition plate is disposed only in a portion where a power supply board is present and is shielded by a partition wall in a boundary area between an electric box and a heat exchanger of the heat exchange unit, The heat exchange unit according to claim 2, wherein no partition wall is provided in the portion.