JPS608634A - Outdoor air blowing structure of window type air conditioner - Google Patents

Abstract

PURPOSE:To prevent air circulation and improve heat dissipating capacity of a condensor by a method wherein the air flowed out of a propeller fan is blown from a radial direction to the interior of a room. CONSTITUTION:Since hot air flowed radially with a propeller fan 3 is flowed along a partition plate 1, the direction of air stream flowed out of the air blowing port 5 can be changed from a radial direction to the interior of a room in an inclined orientation, resulting in that the hot air discharged out of the room from the air blowing port 5 is not suctioned at a condenser 2 from the air intake port 7 arranged at the side to eliminate the air circulation, and further a decreased heat dissipation of the condensor 2 caused by the air circulation at the condensor 2 can be avoided, an air speed in the condensor 2 is made to a mean air speed and so the noise can be reduced. Since the propeller fan 3 can be installed at the side of condensor from a line connecting both ends of the condensor 2, a space between the partition plate 1 and the inner partition plate can be narrowed, resulting in that the depth size of the air conditioner can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an outdoor ventilation structure for a window type air conditioner.

[Prior art]

Figures 1 and 2 show the outdoor ventilation structure of a conventional window type air conditioner.
This will be explained using figures. It has a structure in which the fan motor 8 and compressor 9 are installed within the width dimension of the U-shaped condenser 2 and between the partition plate 1 and the inner and outer partition plates 12, and the U-shaped condenser is arranged so as to surround the propeller fan 3. In a window type air conditioner, outdoor air passes through a condenser 2 arranged in a U shape, and is compressed into an outer box 4 by a propeller fan 3 driven by a fan motor 8.
The air is discharged to the outside from an air outlet 5 provided on the side surface of the air. In such an outdoor ventilation structure, the air that has passed through the condenser 2 is blown out in the radial direction by the propeller fan 3, so that a part of the high temperature air discharged outdoors is sucked from the air suction lower on the side of the outer box 4. The circulation of the air stream shown in FIG. 2 which passes through the condenser 2 again takes place. As a result, the heat dissipation capacity of the condenser 2 is reduced, the cooling capacity of the air conditioner is reduced, and the discharge pressure of the compressor 9 is increased.

Furthermore, since the condenser 2 is arranged in a U-shape, there is a drawback that the depth dimension increases. Furthermore, dehumidified water generated when indoor air is cooled by the evaporator 11 accumulates at the bottom of the outer box 4.
There is also a drawback that water splashes occur when the water surface rises and comes into contact with the propeller fan, and water droplets fly out through the outdoor air outlet 5.

In addition, using a propeller fan as a suction type as described above has often been considered as a way to reduce fan noise, but in order to make products compact, short circuits occur as described above, and this Since the circulation is carried out at the outer peripheral edge of the fan, which has a high speed, there is a problem in that the circulation speed is high and it is not possible to achieve the expected level of noise reduction.

The above-mentioned drawbacks were also one of the reasons why products with significantly lower noise levels were not actually sold.

[Purpose of the invention]

The present invention has been made to improve the above defects. In other words, it prevents air circulation in which the high-temperature air discharged outside passes through the condenser again, and at the same time prevents the increase in depth due to the U-shaped arrangement of the condenser, and also prevents the dehumidified water from splashing due to the propeller fan. The purpose is to prevent

[Summary of the invention]

As shown in Fig. 3, the blade tips of the propeller fan 3 are installed so that they are closer to the condenser than the line AA' connecting both end faces of the U-shaped condenser 2, and the partition plate 1 is placed closer to the condenser than the line AA' connecting both end faces of the U-shaped condenser 2. By tilting and approaching the central plane BI3' of the propeller fan 3, the direction of the flow of high temperature air blown out from the propeller fan 3 can be blown obliquely from the radial direction toward the inner and outer partition plate 12. Therefore, the high temperature air discharged from the propeller fan can be prevented from being sucked into the condenser again.

1. Since the propeller fan 3 can be moved to the condenser 2 side,
Since the distance between the inner and outer partition plates 12 and the condenser 20 can be reduced, the depth of the air conditioner can be reduced. Furthermore, even if the propeller fan 3 comes into contact with the dehumidified water collected on the bottom of the outer box 4 and splashes water, the scattered water droplets fly in the radial direction, colliding with the partition plate l, and moving along the partition plate into the outer case 4. Since the water flows down to the bottom of the air conditioner, it is possible to prevent water droplets from scattering to the outside of the air conditioner.

[Embodiments of the invention]

An embodiment of the present invention will be explained with reference to FIG.

The condenser 2 is arranged in a U shape surrounding the propeller fan 3,
In a window type air conditioner having an outdoor ventilation structure in which a fan motor 8 and a compressor 9 are installed within the width of the condenser 2 and between an inside and outside partition plate 12 and a partition plate 10, air flows in from the outside through the air intake ports 6 and 7. The air exchanges heat with the U-shaped condenser 2, becomes high temperature, and is blown out through the propeller fan 3 and the air outlet 5 to the outside of the room. In such an outdoor ventilation structure, the high temperature air flowing out in the radial direction by the propeller fan 3 flows along the partition plate l, so that the air outlet 5
The direction of the outgoing airflow is diagonal from the radial direction toward the indoor side, and as a result, the high-temperature air discharged from the air outlet 5 to the outside is returned to the air intake lower provided on the side of the condenser 2. This eliminates the circulation of air sucked into the condenser 2, which has the effect of preventing a decrease in the heat dissipation capacity of the condenser 2 due to the circulation of air in the condenser 2, and also reduces noise because the wind speed passing through the condenser 20 is averaged. . In addition, since the propeller fan 3 can be installed closer to the condenser than on the line connecting both ends of the condenser 20, it is possible to narrow the distance between the partition plate 1 and the inner and outer partition plates 12, and as a result, the depth dimension of the air conditioner can be reduced. It has the effect of reducing the size.

Further, water splashes generated when the propeller fan 3 comes into contact with the dehumidified water generated in the evaporator 11 and collected at the bottom of the outer box 4 collide with the partition plate l and flow down, thereby preventing water droplets from scattering outside. I can do it.

〔Effect of the invention〕

As described above, according to the present invention, the direction of the air flowing out from the propeller fan 3 can be blown out obliquely from the radial direction toward the indoor side, so it is possible to prevent air circulation and prevent condensation. It has the effect of improving the heat dissipation ability of the device. Furthermore, since the propeller fan 3 is installed so that the blade tips of the propeller 77 are from both ends of the U-shaped condenser 2 to the condenser, the distance between the inner and outer partition plates 12 and the partition plate 1 can be reduced. This has the effect of reducing the depth of the air conditioner. In fact, the water droplets caused by the contact between the propeller fan 3 and the dehumidified water can be caused to collide with the partition plate 1 and flow down to the floor of the air conditioner outer box.
It also has the effect of preventing water from splashing outside. It is still possible to make the product smaller and significantly reduce noise.

[Brief explanation of drawings]

Fig. 1 is a layout diagram of a conventional window air conditioner, Fig. 2 is an outdoor air blowing structure diagram of a conventional window air conditioner, Fig. 3 is an outdoor air blowing structure diagram of the window air conditioner of the present invention, and Fig. 4 1 shows a layout diagram of a window type air conditioner which is an application example of the present invention. 1... Partition plate, 2... Condenser, 3... Propeller fan, 4... Outer box, butt... Air outlet, 6... Air intake port, 7... Air intake port (Side surface), 8...Fan motor, 9...Compressor, 10...Rono saw fan, 11...Evaporator, vessel, 12...Inside/outside partition plate. Agent Patent Attorney Akio Takahashi Y 1 Not shown 2 Figure 3

Claims (1)

[Claims] 1. Arrange a U-shaped condenser to surround the propeller fan,
In window air conditioners that have a blowing structure in which air that has passed through the condenser is discharged by a propeller fan from an air outlet provided on the side of the outer box of the air conditioner, the blade tips of the propeller fan are connected to the U-shaped condenser. The propeller fan is arranged so that it is on the inside of the line connecting both ends, and the cross-sectional shape of the partition plate that separates the suction side and the discharge side of the propeller fan is moved from the propeller fan blade tip side toward the end face of the U-shaped condenser. An outdoor ventilation structure for a window type air conditioner characterized by having a shape that expands diagonally with respect to the fan axis.