JPS58140549A - Air direction changing device in air conditioning device - Google Patents

Abstract

PURPOSE:To make the air conditioning device compact, by providing a bimetal air direction changing vane at an outlet port of heat exchanged air, and bowing out the warm air downward and the cool air upward. CONSTITUTION:The air direction changing vane 8 is formed to a plate shape by sticking two sheets of metal plates 8a and 8b having different heat expansion coefficients. Both ends thereof are fixed to the both side walls facing each other of the outlet port 3 through a shaft or the like. The expansion coefficient of the metal plate 8a is made larger than that of the metal plate 8b so that the vane is curved with the longitudinal direction as an axis. At the time of cooling operation, the air cooled by a heat exchanger 5 is blown out of the outlet port 3. Since the vane 9 is cooled, the flat plate state or slightly curved state in the upward direction is kept, and the cool air is blown in the horizontal direction. At the time of warming, the vane 8 is gradually curved downward with the increase of the air temperature, and the blowing direction is gradually changed to the downward direction.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a wind direction changing device for an air conditioner.

Conventionally, air conditioner wind direction changing devices have either a structure in which the wind from the blower collides with each other to forcefully change the direction of the air, or a structure that applies the fluid element principle to create a separation phenomenon in the airflow, and the attraction effect that occurs at that time. A structure is known in which the direction of air is changed depending on the direction of the air.

On the other hand, in order to further improve the comfort of air conditioning, for example, hot air during heating is blown downward, and cold air during cooling is blown upward. If a structural airflow direction changing device is adopted, a means for detecting the starting temperature and a mechanism for switching the direction of the blowing air are required, which causes problems such as an increase in assembly man-hours and costs due to an increase in the number of parts. , some improvement measures were required.

In order to solve these conventional problems, the present invention takes advantage of the properties of bimetallic material, which is made by bonding two metal plates with different thermal expansion coefficients, so that, for example, hot air is blown downward and cold air is blown upward. It is an object of the present invention to provide an inexpensive wind direction changing device that eliminates the need for additional temperature detection means and switching mechanisms, thereby contributing to further downsizing of air conditioners.

Hereinafter, a case will be described in which the present invention is applied to a wind direction changing device of an air outlet in an indoor unit of a separate type air conditioner.

First, the schematic structure of the air conditioner will be explained with reference to FIGS. is a ventilation path formed in the indoor unit main body 1, and the suction port 2
The air outlet 3 communicates with the air outlet 3, and a heat exchanger 6 and a blower 6 constituting a well-known refrigeration cycle are disposed therein. The holder is a water tray for the heat exchanger 6, and also serves as an air guider for the blower 6. These are similar to existing air conditioners, and are also equipped with an air filter, a front grill, a fan motor, etc., although not shown, as is well known. Reference numeral 8 denotes a wind direction changing blade, which is formed into a plate shape, and both ends of which are fixed to opposite side walls of the air outlet 3 via a shaft or the like. This wind direction changing blade 8 is made of two metal plates 8a and 8 having different coefficients of thermal expansion, such as iron and copper.
The expansion coefficient is set to be larger than that of the metal plate 8a or that of the metal plate 8b so that the metal plate 8b is formed by pasting metal plates 8a and 8b together and is curved about the longitudinal direction when heated. The material for each of the metal plates 8a and 8b may be selected as appropriate depending on the desired deformation speed.

Next, as shown in Figures 3 and 4, when the wind direction is changed, the air sucked in through the air inlet 2 is transferred to the thermal winter exchanger 6 during cooling operation.
The air is cooled by the air blower 6 and blown out from the air outlet 3 by the blower 6. At this time, since the wind direction changing blade 8 is cooled, it maintains a flat plate state or a slightly upwardly curved state, so that the cooling wind is blown out in the direction of the arrow, that is, in the horizontal direction.

! During heating, the heat exchanger 6 is not heated at the start of 11, so the air blown by the blower 6 is cold. Therefore, the wind direction changing blade 8 is in a flat state or in a slightly upwardly curved state as the case may be, as in the case of cooling, and the direction of the air blown out is horizontal. As the temperature of the blown air increases, the wind direction changing blade 8 gradually bends downward, and eventually the blower 6 blows the air in the direction of arrow B, that is, in the downward direction, as shown in FIG. Even in this process, the blowing direction gradually becomes downward.

Therefore, the ideal ``head cold, feet warm'' effect for air conditioning can be achieved both during cooling and heating, and there is no need for a temperature detection means or a mechanism for changing the wind direction, reducing the number of parts and assembly. The number of man-hours can be reduced, and it can also greatly contribute to the downsizing of air conditioners. .

In this example, the wind direction is forcibly changed by colliding the blowing air with the wind direction changing blade, but it is not clear whether this is done using the principle of a fluid element, but in either case, the wind direction changing blade is rotated. The present invention can be implemented in any of these cases. Further, the air conditioner is not limited to a separate type, but may be an integrated type, and a system type duct outlet can be similarly implemented.

Furthermore, in the previous embodiment, the deformation direction of the wind direction changing blade 8 was set so that it curved when heated to change the wind direction, but conversely, by heating, it deforms from the curved state to a flat plate shape. Similar effects can be expected even if the air direction is set to blow downward.

As is clear from the above examples, in the present invention, 6 pages,
- The air conditioner's wind direction changing device is equipped with a bimetallic wind direction changing blade at the outlet of the air conditioner through which heat-exchanged air is blown out. By utilizing the property of deformable bimetal to change the blowing direction, the wind direction can be changed without the need for temperature detection means or a mechanism to change the blowing direction.The number of parts can be reduced, and the wind direction changing device can be made smaller and smaller. It can be produced at a low cost, and since the direction of the blowout gradually changes, the blowout does not suddenly hit the human body, resulting in a pleasant experience. Furthermore, the shape of the wind direction changing blade changes so that the hot air blows out in a downward direction, so cold air is automatically blown upward and warm air is blown downward, thereby achieving the ``cold head, warm feet'' effect that is ideal for air conditioning. In particular, during heating, cold air is blown upward, which prevents cold drafts and improves comfort.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an air conditioner equipped with a wind direction changing device according to an embodiment of the present invention, FIG. 2 is a longitudinal cross-sectional view of the same air conditioner, and FIG. 3 is a view of the air conditioner during upward blowing. FIG. 4 is an enlarged cross-sectional view of the main part of the air conditioner during downward blowing. 1... Indoor unit main body, 3... Air outlet, 6... Heat exchanger, 6... Blower,
8...Wind direction changing blade. Name of agent: Patent attorney Toshio Nakao and 1 other person
Figure 1 II Figure 1

Claims (2)

[Claims] (1) A wind direction changing device for an air conditioner in which a bimetallic wind direction changing blade is provided at the outlet of the air conditioner from which heat-exchanged air is blown out. (2) The wind direction changing device for an air conditioner according to claim 1, wherein the wind direction changing blade has a shape that changes so that the blowing direction of hot air is directed downward.