JPS5843336A - Fan casing for window type room air conditioner - Google Patents

Abstract

PURPOSE:To enable to interrupt the entry of the open air into the room by a method wherein a hole is drilled in a partition plate dividing the titled air conditioner into an indoor side and an outdoor side so that the shaft of a fan motor passes through the hole and a hole in the fan casing is made smaller than the hole in the partition plate so as to minimize the gap between the former hole and the shaft of the fan motor. CONSTITUTION:Air sucked from the room is cooled by an evaporator 5 and is then blown out into the room through a silocco fan. At the same time, the open air sucked from outside the room is supplied to a condenser 7 by means of a propeller fan 6 so as to exchange heat and is discharged outside the room after it is heated to a high temperature. The air conditioner is divided into the indoor side and the outdoor side by a partition plate 2 and is protected against heat by means of the fan casing 1 while the partition plate 2 is provided with the hole for allowing the shaft 4 of the motor of the silocco fan 3. In this case, the hole phid drilled in the fan casing 1 is made smaller than the hole phiD drilled in the partition plate 2 so that the hole phid comes to lie close to the motor shaft 4 of the silocco fan 3 to thereby interrupt communication of air between the indoor side and the outdoor side of the air conditioner.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fan casing for a window type room air conditioner.

The fan casing of a conventional window-type room air conditioner, f-, is explained using Fig. 1 and Fig. 2.
After the air sucked in from inside is cooled in the evaporator 5,
It is discharged into the room at the 70-tube fan 3. On the other hand, the outside air sucked in from outside is sent to the condenser 7 by the propeller 4 rough 7/6, where it undergoes heat exchange and reaches a high temperature before being released outside. The indoor side and the outdoor side are separated by a cut-out *2' and are insulated by the fan casing 1, but a hole is drilled through which the fan motor shaft 4° for the Sirocco 7 Anw 1lKIIJf is passed. Therefore, outside air from outside the room enters the inside room through the gap between the hole and the shaft, and the evaporator 5
The cooling capacity was mixed with the cooled air and discharged indoors, resulting in a reduction in cooling capacity of about 50 to 70 zdl/h.The purpose of the present invention is to improve the above defects. This is what was done. That is, the purpose is to prevent outside air from entering the room.

By configuring the fan casing 1 in such a shape that the fan motor hole of the fan casing 1 touches the fan shaft 4 as shown in Figure 3, the indoor side and the outdoor side can be completely shut off and the intrusion of outside air can be prevented. .

Even if the fan motor shaft 4 comes into contact with the fan motor shaft 4, the □ foamed polystyrene casing hole will not be deformed or worn out, allowing operation without abnormalities.

Embodiments of the present invention will be described with reference to FIGS. 1 and 3. In FIG. 1, indoor air passes through an evaporator 5 and is cooled, then a sirocco fan 3 fixed to a fan motor shaft 4
is discharged into the room. On the other hand, outside air is blown onto a condenser 7 by a propeller fan 6, heated, and then discharged to the outside air. Since the indoor side and the outdoor side are completely separated by the partition plate 2 and the fan casing 1 as shown in Fig. 3,
There is no air flowing into the room from outside, and heat leakage can be suppressed. However, j2 has the cooling capacity of the conventional Noah / casing hole, 'p! It is possible to improve the power consumption by 50 to 70 compared to the Indian type room air conditioner.

Also, as shown in Fig. 4, the hole (+!ld'
) is tapered to form an angle θ, it is possible to reduce the frictional force when the shaft 4 and the casing 1 come into contact with each other, and it is possible to prevent a reduction in shaft power and generation of friction noise.

As described above, according to the present invention, it is possible to block outside air from entering through the gap 1 between the indoor fan motor shaft and the fan casing, thereby reducing heat leakage and improving the cooling capacity.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional view of the internal structure of a Hatsuto/Do type room air conditioner, Fig. 2 is an enlarged sectional view of a conventional fan casing and fan motor shaft, and Fig. 3 is a 7-yen casing of the present invention (7). FIG. 3 is an enlarged cross-sectional view of the fan motor shaft. FIG. 4 is an enlarged sectional view of the fan motor shaft hole in the fan casing, which has a tapered shape. 4'・11 1... Fan reward, ), - sink, 2... Partition board,
3...Sirocco fan, 4...Fan motor shaft, 5
...4 guns. 6...Propeller fan, ``r1s compressor, s...Heas.Representative patent attorney Susuki 1) Toshiyuki 1 Illustration 3 Figure

Claims (1)

[Claims] 1. In a window type air conditioner that is separated into an indoor side and an outdoor side by a partition plate (2), and in which the partition plate (2) is provided with a hole (CID) through which a fan motor shaft (4) passes. A fan casing for a window-type room near conditioner characterized in that the hole (Cld) of the fan casing (1) that matches the partition plate (2) is smaller than the hole (IIID) provided in the partition (2). . 2. A fan casing stqopme of a window type room air conditioner dispensing device according to claim 1, in which the hole Cf1d'' of the fan casing (1) is tapered.
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