JPS62134448A - Blow-off device for air conditioner - Google Patents

Abstract

PURPOSE:To increase velocity of blow-off air with low noise and to enable increase of an air flow range, by a method wherein a vertical supply opening area control device, which controls a supply opening area, and laterial supply opening area control device are provided in a supply opening. CONSTITUTION:An air flow passage 23, having a suction port 18, a supply opening 19, and provided at its interior with a heat exchanger 20 and a cross fan 21, is provided. A vertical supply opening area control device 26 and a lateral supply opening are control device 27, which control a supply opening area are disposed in the supply opening 19. This constitution enables increase of velocity of blow-off air with low noise and the increase of travel distance of an air flow.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a blowing device for an air conditioner.

Conventional technology In recent years, in indoor units of air conditioners, the number of rotations of the fan motor and the area of the outlet are changed to increase the speed of the blowing air and the temperature of the blowing air, allowing comfortably warm air to reach the floor. is considered.

An example of the conventional air conditioner mentioned above will be described below with reference to the drawings.

FIG. 5 shows a conventional blow-off device for an air conditioner, FIG. 6 shows a side view of FIG. 5, and FIG. 7 shows a cross-sectional view of FIG. It is connected to the heat source section via the conveyance section 2. Reference numeral 5 denotes an air outlet provided in the air outlet body 1, and 6 represents a vane that closes the air outlet 5. The vane 6 is rotatably supported on the upper and lower sides of the air outlet body 1, respectively. Reference numeral 7 denotes a temperature sensing section built into the outlet body 1, which expands and contracts by sensing temperature changes. Reference numeral 8 denotes a mounting plate provided on the temperature sensing portion 7, and springs 9 are fixed to the upper and lower ends of the plate for constantly biasing the vane 6 in the closing direction. Reference numeral 10 denotes a fixed part to which the temperature sensing part 7 is fixed, and the position of the temperature sensing part 7 can be adjusted manually or by using a room thermometer. In the above configuration, during heating, as the blown air becomes high temperature and low air volume, the vane 6
The degree of opening of the vanes 6 decreases, and the degree of opening of the vanes 6 increases as the temperature and air volume become higher. As a result, the vane 6 acts like a nozzle for the blown air, so that the distance traveled by the airflow is kept almost constant under any conditions during heating. Therefore, the temperature and airflow distribution within the living room becomes uniform. (Unexamined Japanese Patent Publication No. 50-711
48)? In addition, there is another conventional example as shown in the figure. In the figure, 11 is the fan motor of the air conditioner indoor unit, 12 is the rotation speed control device of the fan motor 1, and 13 is the fan motor of the air conditioner indoor unit.
1 is an outlet area changing device, and 14 is a control device thereof. 1
Reference numeral 5 denotes a blowout air speed control device, which is connected to a rotational speed control device 12, a blowout opening area control device 14, a heat exchanger temperature detection element 16, and a blowout air temperature detection element 17. When performing heating operation with this combination, air blowing operation is started when the heat exchanger temperature reaches a certain temperature. At this time, the fan rotation speed is controlled so that the blowout temperature becomes a comfortable temperature, and the blowout outlet area is controlled by controlling the blowout outlet area changing device so that the blowout air speed is such that the hot air just reaches the floor surface. It is. For example, when the heating capacity is low, the fan rotation speed is set to a low speed to reduce the air volume to maintain the blowout temperature at a comfortable temperature, and by narrowing the blowout area, the blowout air speed can be increased even if the airflow is small. (Japanese Unexamined Patent Publication No. 179-179-31,
(Japanese Unexamined Patent Publication No. 5912246) Problems to be Solved by the Invention However, in the above configuration, the area of the outlet is closed from above and below to make it smaller and the outlet air velocity is increased, so the outlet air flow is disturbed and the noise level is high. It had the problem of becoming.

In view of the above-mentioned problems, the present invention provides a blow-off device for an air conditioner that can increase the speed of blow-out air and extend the reach of the airflow by reducing the blow-out opening area while making low noise.

Means for Solving the Problems In order to solve the above-mentioned problems, the air conditioning iso blowout device of the present invention includes a vertical blowout area control device for controlling the blowout area within the blowout port, and a left and right blowout port. The structure includes an area control device.

Function The present invention, with the above-described configuration, can increase the speed of the blowing air and keep the reach distance of the airflow constant, and can also suppress the instability of the flow due to the increase in the speed of the blowing air, thereby reducing the noise level.

EXAMPLE Hereinafter, a blowing device for an air conditioner according to an example of the present invention will be described with reference to the drawings.

1, 2, and 3 are cross-sectional views of a blowing device for an air conditioner according to a first embodiment of the present invention.

In Fig. 1, 18 is an inlet 19 is an outlet, 20 is a heat exchanger, 21 is a cross flow fan, 22 is a fan motor that drives the cross flow fan 21 written in mJ, 23 is a ventilation path, and 24 is a vertical direction of wind. 25 is a left and right vane that controls the left and right direction of the wind,
Reference numeral 26 denotes a control device for controlling the outlet area in the vertical direction to 11ill'J, and 27 denotes a left-right outlet area control device for controlling the outlet area in the left-right direction.

Further, in FIGS. 2 and 3, 28 is the vertical outlet area control plate of the vertical outlet area control device 26, 29 is the vertical drive device that drives it, and 30 is the horizontal outlet area control plate. A left-right outlet area control plate of the device 27;
31 is a left-right direction 1@ moving device that drives it.

The operation of the air outlet structure of the air conditioner constructed as described above will be explained below with reference to FIGS. 2 and 3. First, FIG. 2 shows the blowing device under normal operating conditions. The vertical air outlet area control plate 28 and the horizontal air outlet area control plate 30 are arranged on the wall of the air outlet so as not to affect the blown air.

Next, the air outlet area control operation will be explained using FIG. 3. For example, in the case of start-up operation during heating, the fan rotation speed is controlled so that the temperature of the blown air becomes a comfortable temperature, and the area of the outlet is controlled so that the warm air reaches the floor surface. In such an operation, the upper r direction air outlet area control plate 2
8 closes the space above the upper and lower blades 24, and a left-right direction outlet area control plate 30 closes a certain interval from both ends in the left-right direction. A vertical drive device 29 and a left-right motion device 31 are used to drive the vertical outlet area control plate 28 and the left-right outlet area control plate 30, respectively. In this embodiment, an energized spring-like shape memory alloy is used as the vomiting source for the egg direction, the drive device 29, the left-right direction, and the drive device 31. By applying electricity, the shape memory alloy is heated and its total length becomes longer. Also, when the current is turned off, the original full length is restored by the force of the parallel bias spring. In this manner, the vertical air outlet area control plate 28 and the horizontal air outlet area control plate 30 are driven.

Here, the blowout flow when controlling the blowout outlet area will be explained. Generally, in an air conditioner using a cross-flow fan, when ventilation resistance such as a heat exchanger is added, the blowing flow from the impeller decreases the blowing speed at both ends of the fan, as shown in Figure 4 (b). do. Here, in order to control the area of the air outlet, if the air outlet is closed only from below, the air outlet will have a horizontally elongated shape. Naturally, the resistance of the fan at this time increases, causing a backflow at both ends of the fan, as shown in FIG. 4(d). This flow disturbance causes the noise value to rise rapidly. Therefore, as shown in FIG. 4(f), if the air outlet is blocked from the top and left and right directions, the flow turbulence at both ends will be eliminated, and the flow of the blown air will be stabilized and the noise value will be reduced.

Furthermore, if the blown air is horizontally long, the portion that comes into contact with the surrounding stationary fluid will be small, and the viscous force generated between it and the stationary fluid will also increase, making it easy to diffuse and attenuate. However, when the air outlet is blocked from the top, bottom, left and right, the state of the blown air approaches a square shape, so the area in contact with the surrounding stationary fluid is small, making it difficult for the air to diffuse and attenuate, allowing it to reach long distances.

As described above, according to this embodiment, by providing the vertical outlet area control device and the horizontal outlet area control device for controlling the outlet area in the outlet, the outlet air velocity can be controlled with low-level sound. You can extend the reach of airflow.

In this embodiment, a plate having the same shape as the outlet wall is used as the vertical outlet area control plate, but it may be blocked by an egg blade. Although a plate having the same shape as the lower wall surface of the air outlet was used as the left-right direction air outlet area control plate, the air outlet may be blocked by using several blades in the form of a shutter.

Alternatively, it may be blocked by the left and right blades.

In this embodiment, a shape memory alloy spring is used as the vertical and horizontal driving devices, but a motor such as a stepping motor or a damper motor may be used for driving.

Effects of the Invention As described above, the present invention provides a vertical outlet area control device and a horizontal outlet area control device for controlling the outlet area in the outlet, thereby controlling the outlet air speed with low noise. You can extend the reach of airflow.

[Brief explanation of drawings]

1, 2, and 3 are cross-sectional views of a blowing device of an air conditioner according to an embodiment of the present invention, FIG. 4 is an explanatory diagram of the blowing flow of an impeller, and FIG. 5 is a conventional air conditioner. 6 is a side view of FIG. 5, FIG. 7 is a sectional view of FIG. 6, and FIG. 8 is a configuration diagram of another conventional blowing device. 18...Suction port, 19...Blowout port, 2o
... Heat exchanger, 21 ... Cross flow fan, 23 ... Ventilation path, 26 ... Up and down direction outlet area control device, 27 ... Right and left direction Air outlet area control device. Name of agent: Patent attorney Toshio Nakao and one other person? 0
- Diagram 2 of the thermogram pincer (of)? ? Figure 3 (0-nz (b,) 3θ z5 Hz 24 Figure 4) Figure 4 45 Figure 6

Claims (1)

[Claims] A suction port, a blowout port, a ventilation passage having a heat exchanger and a cross flow fan therein, a vertical blowout port area control device for controlling a blowout port area within the blowout port, and a left and right blowout port area control device. A blowout device for an air conditioner equipped with a device.