JPH0539385Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a heat exchange unit with partition plates erected on the bottom plate, with one side serving as a heat exchange chamber and the other side serving as a machine room.

(b) Prior Art Conventionally, an example of the structure of this type of heat exchange unit has been disclosed in Japanese Utility Model Application Publication No. 145679/1983.

According to this content, a partition plate was erected on the bottom plate to form a heat exchange room on one side and a machine room on the other side, and a substantially L-shaped heat exchanger and a blower were disposed in this heat exchange room. To be more specific, the blower is installed at the front of the heat exchange chamber, the long side of the approximately L-shaped heat exchanger is at the back of the heat exchange chamber, and the short side is at the side end of the heat exchange unit on the heat exchange chamber side. The heat exchangers were placed on the bottom plate so that they were located at their respective positions.

By operating the blower, outside air is sucked in from the back and sides of the heat exchange chamber and discharged from the front.

(c) Problems to be solved by the invention In such a heat exchange unit, when the heat exchanger is used as an evaporator, drain water is generated on the surface of the fins of the heat exchanger, and this drain water flows along the surface of the fins to the bottom plate. However, since the fins are in contact with the bottom plate, the drain water tends to accumulate in the lower part of the gaps between the fins, and when the accumulated drain water begins to freeze, this part becomes a nucleus for frost to form.

(d) Means for solving the problem In order to solve this drawback, the present invention disposes the propeller fan on the front side of the heat exchange chamber, and also places the long side of the heat exchanger on the rear side of the heat exchange chamber. , the short sides are located at the side ends of the heat exchange chamber, the long sides are lifted from the bottom plate of the heat exchange chamber, and the ends are fixed to the partition plate, and the short sides are placed on the bottom plate. This is what I did.

(E) Function In this heat exchange unit, a gap is provided between the long side of the heat exchanger and the bottom plate, so that the drain water that flows down along the fins does not accumulate on the bottom plate, but flows through the drainage holes along the slope of the bottom plate. flows to

(f) Embodiment In FIG. 1, reference numeral 1 denotes an outdoor heat exchange unit of a separation type air conditioner, and this unit has a horizontally long rectangular parallelepiped-shaped housing. Reference numeral 2 denotes a base, in which a flat bottom plate 3 and a back plate 4 are integrally molded into an L-shape. Reference numeral 5 denotes a raised portion formed on the left edge of the bottom plate 3, to which a cushion material 6 is pasted. A heat exchanger, which will be described later, is mounted on this cushion material 6. 7 is a drain guide groove;
8 is a drain hole formed in this groove, and the entire bottom plate 3 is inclined toward the guide groove 7, and the drain water dripping onto the bottom plate 3 is collected in this groove 7 and discharged from the drain hole 8 to the outside of the casing. I'm trying to make it happen. 9 is a plate fin type heat exchanger bent into an L shape, and the short side 10 is connected to the bottom plate 3 through the cushion material 6.
The tube plate 12 is placed along the back plate 4 with the long side 11 floating above the bottom plate 3, and the rear side 13 of the tube plate 12 is fixed to the back plate 4. Reference numeral 14 denotes a partition plate fixed to the bottom plate 3, which divides the inside of the housing into a heat exchange room A in which a heat exchanger 9 is disposed and a machine room B. The rear end 15 of this partition plate 14 is fixed to the front side of the tube plate 12 on the long side 11 of the heat exchanger 9, and the front end 17
is fixed to the rising edge 18 of the bottom plate 3.

Reference numeral 19 denotes an air blower, and numeral 20 denotes a mounting base to which the air blower is attached. Reference numeral 24 denotes a presser plate formed on the lower surface of the upper side 22, which presses the long side 11 of the heat exchanger 9 toward the back plate 4 side.

25 is a compressor, and 26 is an accumulator, both of which are arranged in machine room B.

Side panels (not shown) are attached to both sides of the base 2, and a front panel and a top panel (not shown) are attached to the front and top surfaces, respectively, forming a heat exchange unit of the casing. Ru.

As the blower 19 rotates, outside air is sucked in from the back surface 27 and side surface 28 of the heat exchange unit 1, exchanges heat with the refrigerant flowing inside the heat exchanger 9, and is discharged from the front surface 29. At this time, the amount of air sucked in from the back surface 27 of the heat exchange unit 1 is greater than the amount of air sucked in from the side surface 28. When the heat exchanger 9 is operated as an evaporator, a larger amount of drain water is generated in the fins on the long side 11 of the heat exchanger 9 than on the fins on the short side 10 of the heat exchanger 9. Drain water from the fins on the long side 11 drips onto the bottom plate 3 and is collected in the guide groove 7. Further, drain water from the fins on the short side 10 is collected in the guide groove 7 via the cushion material 6 and the bottom plate 3. At this time,
Since a part of the fins on the short side 10 is placed on the bottom plate 3 via the cushion material 6, drain water from the fins on the short side 10 accumulates in the gaps between the fins. However, as mentioned above, the amount of drain water generated on the short piece 10 is smaller than the amount of drain water generated on the long side 11, so it is necessary to slow down the speed at which frost is generated on this short side 10. I can do it.

In addition, the drain water generated on the long side 11 is drained through the gap 30.
It quickly flows down to the bottom plate 3 through the drain hole 8 and is discharged from the indoor heat exchange unit 1. Therefore, the speed of frost generated on this long side 11 is also slowed down, thereby suppressing a decrease in heat exchange efficiency.

(g) Effects of the invention As described above, the present invention provides a substantially L-shaped heat exchanger that is disposed so as to straddle the rear and side parts of the propeller fan. All of the long sides, which have a higher ventilation volume and better heat exchange efficiency than the short sides, are lifted from the bottom plate, and a gap is created between all of these long sides and the bottom plate, so the long sides have a good heat exchange efficiency. Drain water generated on the sides flows smoothly through the gap to the drain hole in the bottom plate. As a result, the growth of frost on the long sides of the approximately L-shaped heat exchanger can be suppressed, and the decrease in heat exchange efficiency can be suppressed to a small extent on the long sides, where the amount of ventilation is higher than on the short sides. .

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of the same unit, and FIG. 2 is a sectional view of a main part of the same unit. 3... Bottom plate, 9... Heat exchanger, 10... Short side,
11... Long side, 14... Partition plate, 19... Fan, A... Heat exchange room, B... Machine room.

Claims (1)

[Scope of utility model registration request] A partition plate is set up on the bottom plate, one side is a heat exchange room, and the other side is a machine room, and this heat exchange room houses a propeller fan and a heat exchanger bent into an approximately L shape, and the heat exchange room side of this bottom plate is In the heat exchange unit provided with a drain hole for drain water generated in the heat exchanger, the fan is arranged at the front side of the heat exchange chamber, and the long side of the approximately L-shaped heat exchanger is used for heat exchange. On the rear side of the chamber, the short sides are located at the side ends of the heat exchange chamber, a gap is provided between all of the long sides and the bottom plate, and the side ends of the long sides are fixed to the partition plate. death,
A heat exchange unit characterized in that the bottom plate is placed only on the short side.