JPS6117289Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement of an air conditioner having a flat air passage.It reduces air passage resistance due to air blowing, improves air blowing characteristics such as noise, and makes it possible to create a thinner air conditioner. It provides an opportunity for

In recent years, air conditioners have been required not only to operate more quietly, but also to be thinner and fit closer to interior walls in terms of interior design.
The essential condition is a combination that creates an efficient ventilation path without impairing the functions of the heat exchanger, ventilation fan, and motor that drives the fan, which are essential for air conditioning. The present invention has been devised in view of these points, and examples thereof will be described below.

Reference numeral 1 denotes an air conditioner main body, which is formed flat in the front-rear direction, has suction ports 2a and 2b on the left and right, and has an air outlet 3 at the lower front surface. There are suction ports 2a, 2 inside.
Heat exchangers 4a and 4b are provided opposite to b, a fan motor 5 is provided approximately in the center, and a radial fan 6 is fixed coaxially with the fan motor 5. 7
is a fan casing, which is formed in a spiral shape surrounding the radial fan 6, has a bell mouth 8 that opens opposite the radial fan 6, and has an air outlet 9 that is widened toward the air outlet 3. have. 10 is a wind guide plate, which is provided on almost the entire inside of the front panel 11;
The cool air balanced by the heat exchangers 4a and 4b is cut off to prevent dew from adhering to the surface of the front panel 11, and the suction to the radial fan 6 is made smooth.

The radial fan 6 has a cylindrical shape with a relatively large outer diameter and a small fan width A, and is provided with a shingle closing plate 12 on one end face, smoothly extruded toward the bell mouth 8 side, and has a fan motor. A fan shaft portion 13 is formed on the distal end surface of the fan shaft portion 5, which is bent slightly apart from the fan shaft portion 5 and connected to the fan motor 5. The extrusion height B of the fan shaft portion 13 is greater than the fan width A, and the fan shaft portion 13 is extruded to the opening 14 of the bell mouth 8.

On the other hand, on the side of the baffle plate 10, a cylindrical part 15 coaxial with the fan shaft part 13 is formed.
3 and the cylindrical portion 15 are placed in a state where they overlap.

Reference numeral 16 designates an air blowing passage constructed as described above, through which air is sucked in through the suction ports 2a and 2b, passes through the heat exchangers 4a and 4b, and then flows through the opening 14 of the bell mouth 8.
The air enters the fan casing 7, reaches the air outlet 3 through the air outlet 9, and is blown into the room.

As described above, in this invention, the fan motor is housed in the radiant fan, and even if the width of the radiant fan is reduced, the fan motor protrudes beyond the opening of the bell mouth, so the depth dimension of the main body can be made extremely thin. It can be done. Moreover, since the airflow at the bellmouth opening flows in from the circumferential direction of the casing, the central part of the bellmouth opening is a dead space for ventilation, and does not impede the flow of air in any way; rather, the central part is open. In some cases, eddy currents were generated and caused disturbances in the airflow, but the opening of the bell mouth was made into a smooth ring shape by the closing plate of the radial fan and the cylindrical part of the baffle plate, which allowed the airflow to flow into the casing. The air flow can be made smoother, and the air blowing characteristics such as noise can be significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an air conditioner according to the present invention, FIG. 2 is a cross-sectional view taken from FIG. 1, and FIG. 3 is a cross-sectional view taken from FIG. 1. In the figure, 1 is the air conditioner body, 5 is the fan motor,
6 is a radiation fan, 7 is a fan casing, 8 is a bell mouth, 10 is a baffle plate, 12 is a shielding plate, 13 is a fan shaft portion, 14 is an opening, 15 is a cylindrical portion, 16
is the ventilation path.

Claims (1)

[Scope of utility model registration request] A heat exchanger on the left and right sides, a fan casing installed between the heat exchangers, a fan motor installed approximately in the center of the fan casing, and a radiation fan attached to the shaft of this fan motor are arranged in a plane. In an air conditioner that is thin in the rear direction, the air guide plate provided inside the front panel forms an air guide path from the heat exchanger to the radiant fan via the bell mouth of the fan casing. A fan shaft part is formed by extruding inward from the shutter closing plate toward the bell mouth side to be larger than the fan width A, and this fan shaft part is surrounded by a fan motor that protrudes beyond the bell mouth opening. 1. An air conditioner characterized in that the fan shaft is mounted in a similar manner and the tip of the fan shaft is located close to the air guide plate.