JPS6218887Y2 - - Google Patents

Description

[Detailed description of the invention] This invention has two air outlets with a turbo fan in between, and one of these two air outlets
This invention relates to an air conditioner equipped with a damper.

It is known that the front panel of an air conditioner is equipped with two discharge ports, for example, an upper discharge port and a lower discharge port, and the lower discharge port is equipped with a damper, dividing the discharge range into upper and lower halves. As shown in Figure 1, when damper a is closed, the air volume is zero in the discharge area on closed side b, so open side c
Not only is it not possible to obtain a sufficient amount of air, but also a vortex d is generated on the closed side b, resulting in a decrease in air blowing efficiency and a large air blowing noise.

This idea was made in consideration of the above circumstances, and its purpose is to reduce the sound of air blowing by providing an auxiliary air passage that guides the air from the closed side where the damper is installed to the open side. At the same time, the present invention aims to provide an air conditioner with improved air blowing efficiency.

An embodiment of this invention will be described below with reference to the accompanying drawings. 1 in Figures 2 to 5 is the main body, and the front of the main body 1 is provided with an air inlet 2 in the center, and an upper air outlet 3 and a lower air outlet 4 are provided in the upper and lower parts, respectively. It is being Main body 1
A heat exchanger 5 is provided inside the air inlet 2, facing the air suction port 2. A turbo fan 6 whose thickness is thinner than its outer diameter is provided facing the heat exchanger 5, and air passes through the heat exchanger 5 from the air suction port 2 as shown by solid arrow A or broken arrow B. After the air is sucked into the main body 1, it is blown out into the room again from the upper air suction ports 3 and 4. A fan motor 7 for driving the turbo fan 6 is attached to the back of the main body 1. A fan casing 8 surrounds the turbo fan 6.
is provided, and the air sucked into the main body 1 from the air suction port 2 as described above is sent to the upper and lower air outlet ports 3.
and 4. and,
A damper 9 is provided between the lower end of the fan casing 8 and the lower air outlet 4 so as to be openable and closable. Further, an intermediate casing 10 is provided in the air passage of the fan casing 8, and the damper 9 is provided with an intermediate casing 10.
When the lower air outlet 4 is closed, the air discharged from the turbo fan 6 is transferred to the intermediate casing 1.
0 and the fan casing 8, and is guided toward the opened upper air outlet 3.

In the air conditioner configured as above,
When the operation is performed with the damper 9 closed, the airflow discharged downward from the turbo fan 6 passes through the auxiliary ventilation passage 11 as shown in FIG. As shown in FIG. 6, the entire turbo fan 6 is effectively utilized, increasing the air volume compared to conventional air conditioners. In other words, when the rotation speed of the turbo fan 6 is 600 revolutions per minute, the air volume when blowing in two directions (up and down) is 850 revolutions per minute.
Cubic meters per hour, the air volume in the case of conventional one-way blowing is
Compared to 520 cubic meters per hour, it was confirmed that the air volume when blowing in one direction according to the present invention was 700 cubic meters per hour, an improvement of about 40%. Furthermore, when operating with the damper 9 open, the air sucked into the main body 1 as shown by the solid line arrow A is blown out to the outer circumference of the turbo fan 6, and then guided to the fan casing 8 as shown in FIG. Upper air inlet 3 and lower air inlet 4
It is blown into the room.

As explained above, in this idea,
In an air conditioner that has two air outlets with a turbo fan in between, and one of these two air outlets is equipped with a damper, an auxiliary ventilation path is provided in the fan casing, so the damper can be closed and only one air outlet can be used. When the outlet is closed, the generation of vortices at the closed outlet is prevented, the amount of air blown is increased, and the generation of noise is prevented.

[Brief explanation of the drawing]

Figure 1 is a vertical side view of a conventional air conditioner;
The figure is a front view showing an embodiment of this invention, Fig. 3 is a vertical side view of this damper, Fig. 4 is a longitudinal side view of this damper in a closed state, and Fig. 5 is a longitudinal side view of this damper in an open state. FIG. 6, which is a vertical side view showing the state, is a graph diagram showing a comparison of the amount of air blown between the conventional air conditioner and the air conditioner of the present invention. 3... Upper air suction port, 4... Lower air suction port, 5... Heat exchanger, 6... Turbo fan, 8...
...Fan casing, 9...Damper, 11...Auxiliary ventilation duct.

Claims (1)

[Scope of utility model registration request] A heat exchanger, a turbo fan that faces the heat exchanger and sucks in air from the axial direction and blows it out to the outer periphery, and two blow-off ports that surround the turbo fan and are located opposite each other with the turbo fan in between. a fan casing provided in the fan casing, a damper provided in at least one of the air outlets so as to be openable and closable and that selectively switches the air flow from both air outlets or one of the air outlets; An air conditioner characterized by comprising an auxiliary ventilation passage that guides wind to an open side air outlet when the air conditioner is closed.