JPH0575932B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a variable wind direction device for heating equipment and air conditioners such as air conditioners.

Conventional technology Conventionally, this type of variable wind direction device was used for heating equipment, as shown in Figures 4 and 5.
A combustion section 2, a heat exchanger 3 concentrically surrounding the outer periphery of the combustion section 2, and an indoor circulation blower 4 for supplying indoor air to the heat exchanger 3 are disposed inside the heat exchanger 3.
The downstream side is composed of a plurality of wind deflection plates 5 that swing from side to side and a connecting rod 6 that connects the wind deflection plates 5. One of the wind deflection plates 5 is connected to an electric motor (not shown) via a link mechanism or the like. ), all of the wind deflecting plates 5 were simultaneously rotated via the connecting rod 6 to deflect the wind direction. (For example, Japanese Utility Model Publication No. 55-57652) Note that 7 is an electric motor for driving the indoor circulation blower 4, 8 is a guard made of a perforated plate and also serves as support for the electric motor 7, and solid arrows indicate air flow. shows.

Problems to be Solved by the Invention However, with the above configuration, it is necessary to use a link mechanism or an electric motor to swing the wind direction deflection plate 5, and there is a problem that the configuration becomes complicated and large. Ta. Furthermore, in order to periodically swing the wind direction deflecting plate 5, it is necessary to constantly energize the driving electric motor, resulting in the problem of wasted power consumption.

SUMMARY OF THE INVENTION The present invention has been made to solve these conventional problems, and it is an object of the present invention to provide a variable wind direction device for an air conditioner that has a simple configuration and automatically swings a wind deflection plate without using electricity to change the wind direction. shall be.

Means for Solving the Problems In order to solve the above-mentioned problems, the variable wind direction device of the present invention has an arc-shaped downstream end on both sides of the heat exchanger located downstream of the indoor circulation blower, and A blower guide having an enlarged adhesion wall is provided, and a shape memory alloy and an auxiliary spring are used to connect the blower guide to the downstream side of the heat exchanger and at a symmetrical position with respect to the heat exchanger. disposing a pair of coupled rotatable wind direction deflection plates; further disposing a blow guide plate between the shape memory alloy and the indoor circulation blower so as to form a ventilation path between the blow guide; The wind direction deflection plate is oscillated by utilizing the temperature difference of the blown air, so that the wind direction can be oscillated and deflected.

Effects According to the present invention, with the above-described configuration, the attachment wall and the wind deflection plate form a so-called fluid control element having a Coanda effect, and the shape memory alloy and the auxiliary spring form a pair of wind deflection plates. It is possible to automatically swing the air using the temperature difference of the air passing through it, thereby swinging and deflecting the wind direction.

Embodiment Hereinafter, a case where an embodiment of the present invention is used in an oil-burning device will be described based on the accompanying drawings.

As shown in FIGS. 1, 2, and 3, this embodiment includes a combustion section 22 that uses petroleum as fuel inside an exterior 21, and a heat exchanger 23 that concentrically surrounds the outer periphery of the combustion section 22.
An indoor circulation blower 24 is disposed behind the heat exchanger 23 to send indoor air to the heat exchanger 23, and the downstream ends of the air flow are arc-shaped on both sides of the heat exchanger 23, and The attached wall 25 expanded in the direction,
25' are provided, and a rotary shaft 2 is disposed downstream of the heat exchanger 23 and is located symmetrically with respect to the heat exchanger 23.
A pair of wind direction deflecting plates 30, 30' are arranged, which are rotatable about 9, 29'. Furthermore, the ends of both wind direction deflection plates 30, 30' on the side of the indoor circulation fan 24 are made of shape memory alloys 27, 2, which generate contraction force at high temperatures.
7', and the other end is a shape memory alloy 27,
When 27' is at a low temperature, the blower guides 26, 2 are connected via auxiliary springs 28, 28' that stretch the shape memory alloys 27, 27' and change the direction of the wind deflection plates 30, 30'.
It is connected to 6'. Furthermore, between the shape memory alloys 27, 27' and the indoor circulation blower 24,
In addition, there is a ventilation passage 3 between the ventilation guides 26 and 26'.
4, 34', and are provided with air guide plates 33, 33' that bypass a part of the air from the indoor circulation blower 24 without passing through the heat exchanger 23, and blow the air to the shape memory alloys 27, 27'. The tips of the shape memory alloys 27, 27' of the air guide plates 33, 33' on the shape memory alloy 27, 27' side are arranged to face the wind direction deflection plates 30, 30' when the shape memory alloys 27, 27' contract. Note that 31 is an electric motor for driving the indoor circulation blower 24, and 32 is a guard made of a perforated plate that also serves to support the electric motor 31. Further, solid line arrows indicate air flow.

According to this configuration, as shown in FIG. By deflecting the hot air after passing through it in the direction of the adhering wall 25, the hot air passes near the shape memory alloy 27, and at the same time, the other air deflection plate 30' and the air blowing guide 26' are connected. It becomes difficult for hot air to flow near the shape memory alloy 27'. Further, due to the action of the air guide plate 33', a portion of the cold air from the indoor circulation fan 24 is blown to the shape memory alloy 27', so that the temperature of the shape memory alloy 27' decreases rapidly. That is,
The contraction force of the shape memory alloy 27 becomes larger than the contraction force of the auxiliary spring 28, and at the same time the rear end of the wind deflection plate 30 is rotated in the direction of the attachment wall 25, the contraction force of the shape memory alloy 27' causes the contraction of the auxiliary spring 28'. The force suddenly decreases, resulting in an action of rotating the outer end of the wind deflection plate 30' toward the attached wall 25'. Therefore, since the main stream of air next flows near the wind direction deflection plate 30', the temperature near the shape memory alloy 27 decreases due to the action of the air guide plate 33.
The wind direction deflection plates 30, 30' are rotated in the opposite direction to that described above, and the state shown in FIG. 2 is restored. Thereafter, in order to automatically repeat this operation, the wind direction deflection plates 30, 30' continue to swing and deflect the wind direction.

Effects of the Invention According to the present invention, the wind direction is deflected by using the Coanda effect by the attached wall and the wind direction changing plate, and the wind direction deflecting plate is automatically changed by using the shape memory alloy and the temperature difference caused by the deflection of hot air. Since the wind direction is swung and deflected by swinging, the variable wind direction device can be made smaller, and since it uses hot air, no electricity is consumed during operation, providing an economical air conditioning device. be able to.

[Brief explanation of drawings]

Fig. 1 is a front view of an air conditioner having a variable wind direction device according to an embodiment of the present invention, Figs. 2 and 3 are sectional views of the air conditioner, and Fig. 4 is an air conditioner showing a conventional configuration. FIG. 5 is a front view of the air conditioner, and FIG. 5 is a sectional view of the air conditioner. 23... Heat exchanger, 25, 25'... Adhering wall,
26, 26'... Air blow guide, 27, 27'... Shape memory alloy, 28, 28'... Auxiliary spring, 30,
30'... Wind direction deflection plate, 33, 33'... Air blow guide plate, 34... Ventilation path.

Claims (1)

[Scope of Claims] 1. Air blow guides are provided on both sides of the heat exchanger located downstream of the indoor circulation blower, and the downstream end of the air flow has an arc-shaped adhesion wall that expands outward, and the heat exchanger and between the heat exchanger and the blower guide, a pair of rotatable rotatable tubes having an upstream end coupled to the blower guide by a shape memory alloy and a downstream end coupled to the blower guide by an auxiliary spring. A variable wind direction device for air conditioners equipped with wind deflection plates. 2. The variable wind direction of the air conditioner according to claim 1, wherein a blow guide plate is arranged between the shape memory alloy and the indoor circulation blower so as to divide the space between the blow guide and the heat exchanger into two. Device.