JPS638383B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an air conditioner that is integral and performs air intake and exhaust only from the back side.

Conventional configuration and its problems Conventionally, an air conditioner that is integrated and performs intake and exhaust only from the back has a configuration as shown in FIG. In other words, the indoor side B is placed approximately in the center of the air conditioner A.
A partition plate a is provided which separates an outdoor side C from a partition plate a, a motor b for driving an inside and outside fan is fixed to this partition plate a, and a propeller fan d, which is an outside fan, is fixed to an output shaft c of this motor b on the outdoor side. The propeller phantom d is arranged on one side of the back surface e of the air conditioner A, and the outdoor heat exchanger g is arranged facing the other side, and the air flows in the direction indicated by the arrow D. It flows like that.

However, if the configuration is as above, the rear e
The propeller hunch d and the outdoor heat exchanger g must share the limited area of the propeller hunch d, and as a result, the diameter of the propeller hunch d and the front area of the outdoor heat exchanger g become small. Therefore, the outdoor heat exchanger g is enlarged in the depth direction in order to secure the necessary heat exchange amount, and the front surface area is small and the passing air velocity relative to the required air volume is increased, and the aforementioned depth is increased. Due to the synergistic effect, the ventilation resistance of the outdoor heat exchanger g became large. Furthermore, the propeller fan d has a small fan diameter in response to the large ventilation resistance of the outdoor heat exchanger g, so it must be driven at a large rotational speed, resulting in the problem of generating large noise. was.

Purpose of the Invention The present invention solves these problems by efficiently utilizing the limited area on the back side to secure the heat exchanger area and fan diameter, thereby reducing ventilation resistance and at the same time. The purpose is to realize a ventilation path with less noise by operating the fan at a low rotation speed.

Composition of the Invention In order to achieve this object, the present invention arranges a double-suction type centrifugal fan and a motor for driving it so that the rotating shaft is in the vertical direction, and connects the outlet of the casing of the centrifugal fan to the air outlet. The outdoor heat exchanger is placed at the end of the back of the harmonizer, and is bent into an L shape, with its long side facing the back side and its short side facing the side.

With this configuration, the front surface area and fan diameter of the outdoor heat exchanger can be increased, and the fan can be operated at low rotational speed with little ventilation resistance, thereby realizing a ventilation path with little noise.

DESCRIPTION OF EMBODIMENTS The present invention will be described below with reference to FIGS. 2 to 4 showing one embodiment thereof.

FIG. 2a is a plan sectional view of the air conditioner E according to this embodiment, and FIG. 2b is a side sectional view. Fig. 3 is an explanatory diagram of the assembly of each part, Fig. 4 is an illustration of the internal unit A, the cabinet 13, and the front grill 14.
FIG.

In each figure, 1 is a double-suction type centrifugal fan (hereinafter simply referred to as centrifugal fan), and 2 is a motor for driving the centrifugal fan 1, which is fixed to a bottom plate 3 with its rotating shaft 1a oriented vertically. 4a and 4b are arranged so that the air guider of the centrifugal fan 1 surrounds the centrifugal fan 1, and the air outlet 5 thereof is arranged at the end of the rear surface 6 on the outdoor side of the air conditioner. 7 is a partition plate that divides the air conditioner E into an indoor side B and an outdoor side C; 8 and 9 are side plates of the air conditioner E, and there are no ventilation openings. Reference numeral 10 is an outdoor heat exchanger bent into an L shape, with a long side 11 facing the back surface 6 and a short side 12 facing the side plate 9. The air guiders 4a and 4b are divided into upper and lower parts as shown in FIG. 3, and after the air guider 4b is fixed to the bottom plate 3, the centrifugal fan 1 is fixed to the rotating shaft 1a of the motor 2, and the air guider 4a is fixed from above. It's summery. 13 is a cabinet; 14 is a front grill; the internal unit is inserted into the cabinet 13, and the front grill 14 is fixed to the cabinet 13;

The air flow under the above configuration will be explained. When the centrifugal fan 1 is rotated by the drive of the motor 2, air passes through the opening 6a on the back surface 6 of the cabinet 13, passes through the outdoor heat exchanger 10, is sucked into the centrifugal fan 1 through the air guiders 4a and 4b, and gives energy. After that, it is discharged from the air outlet 5. At this time, due to the nature of the centrifugal fan 1, air is sequentially collected in the air guiders 4a, 4b and sent to the outlet 5, so that the air velocity distribution at the outlet 5 is uniform and the area of the outlet 5 can be reduced. Further, the centrifugal fan 1 is disposed inside the air conditioner, and its relatively generous depth allows for a large diameter fan. In addition, since the area of the air outlet 5 is small, a large area is secured for the opening 6a on the back side, which becomes the suction port.Furthermore, by making the outdoor heat exchanger 10 L-shaped, its front area becomes large, which is necessary. The depth of the outdoor heat exchanger 10 for ensuring the amount of heat exchange becomes small.

Effects of the Invention As is clear from the above embodiments, by adopting the configuration of the present invention, the outdoor side fan diameter is large, the front surface area of the outdoor side heat exchanger is large, and the depth is small, so that ventilation resistance is reduced. It is possible to drive the outdoor fan with a large air volume at a low rotation speed. In addition, since the L-shaped outdoor heat exchanger causes incoming air to flow uniformly from around the fan, it is possible to realize a ventilation path with low noise and a large amount of air.

[Brief explanation of the drawing]

FIG. 1 is a plan sectional view of a conventional integrated air conditioner with rear air intake and exhaust, and FIG.
FIG. 2b is a side sectional view, FIG. 3 is an exploded perspective view of various parts, and FIG. 4 is an exploded perspective view of the external appearance of the internal unit, cabinet, and front grill of the air conditioner. 1...Double suction type centrifugal fan, 2...Motor, 3
... Bottom plate, 4a, 4b ... Air guider, 6 ... Back side, 10 ... Outdoor heat exchanger, 13 ... Cabinet, 14 ... Front grill.

Claims (1)

[Claims] 1 The ventilation passages on the indoor side and the outdoor side are separated by a partition plate, and in the ventilation passage on the outdoor side, it is fixed to the rotating shaft of a double suction type centrifugal fan motor, and the rotating shaft of the motor is perpendicular to the bottom plate. and is arranged and fixed at the lower part of the centrifugal fan, the outlet of the casing of the centrifugal fan is arranged at the end of the back surface, and the long side of the outdoor heat exchanger, which is formed in a substantially L-shape, is arranged and fixed at the lower part of the centrifugal fan. An air conditioner configured to be fixed on the back side with the short side facing one side.