JPH01310254A - Cold/hot air blowing adjustment device in duct - Google Patents

Abstract

PURPOSE:To enable an air flow direction to be automatically changed according to the temperature of air blown, without need for a power machine, by using a shape memory alloy spring capable of a deformation according to the temperature of air blown through a duct, for a rotation driver for combined blow-off port shutter and louver vanes turnably supported on shafts at a blow-off port of the duct. CONSTITUTION:In a normal condition, a shape memory alloy spring 9 is extended by a tensile force of a bias spring 8, so that a driving rod 5 is pulled upward, and vanes 2 are turned clockwise to shut up a lower blow-off port 3, resulting in that a duct 1 is opened to the upper side. With hot air (35-45 deg.C) fed from a lower part of the duct 1, the spring 9 is brought to a transformation temperature to recover a shape, namely, to shrink. In this condition, the restoring force of the spring 9 surpasses the tensile force of the spring 8, so that the driving rod 5 is pulled downward. The vanes 2 are turned counterclockwise, and the uppermost vane 2 comes to abut against a stopper 4, whereby the duct 1 is closed with the result of a changeover of air passage.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cold/hot air blowing adjustment device in a duct used for heating and cooling a residential area.

(Prior Art) Conventionally, a damper has been used as a device for causing air to flow in a duct.

Dampers can be operated manually or automatically, but those that operate automatically use electricity and are mechanically driven by a motor.

(Problem to be solved by the invention) Manual operation of the damper requires human labor, and in the case of an automatic drive system, the damper is driven by a motor, which increases the size and weight of the device and causes economic problems. Ta.

The present invention has been proposed in view of the problems of the prior art, and its purpose is to automatically switch the air path depending on the temperature of the ventilation air without requiring any power equipment as a drive source, and to use a damper. An object of the present invention is to provide a cold/hot air blowout adjustment device in a duct in which switching and opening/closing of the blower outlet are performed simultaneously.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the cold/hot air blowout adjustment device for a duct according to the present invention includes a device for opening/closing the airflow outlet and switching the wind direction, which is rotatably supported on the airflow outlet of the duct. It consists of a blade and a rotary drive device for the blade, which is made of a shape memory alloy spring that deforms depending on the temperature of the blown air in the duct.

In addition, in order to smoothly operate the blades pivotally supported at the duct outlet in accordance with the temperature of the air inside the duct, both ends of the drive rod connected to the protrusion inside the duct of each blade and the duct are connected. They are connected by a bias spring and a shape memory alloy spring that deforms depending on the temperature of the air inside the duct.

(Function) Since the present invention is configured as described above, the shape memory alloy spring constituting the rotational drive device for the blade for opening and closing the air outlet and for switching the wind direction, which is rotatably supported on the air outlet of the duct, is configured as described above. The blades rotate according to the behavior corresponding to the temperature of the blown air in the duct, thereby simultaneously opening and closing the duct outlet and switching the wind direction.

(Example) The present invention will be described below with reference to the illustrated embodiments.

(1) is a duct, (2) is a plurality of air outlet opening/closing blades rotatably supported on the lower air outlet (3) of the duct (1) and for switching the wind direction, and the uppermost blade (2) When deployed, the rear end abuts against a stopper (4) in the duct (1), thereby blocking the inside of the duct (1).

Horizontal protrusions (2a) protruding from the protrusions in the duct of each of the vanes (2) serve as drive rods (2a) extending vertically within the duct.
Spring receiving pieces (6) are loosely fitted into the large diameter hole (5a) or slot provided in the rod (5) and are disposed at the upper and lower ends of the rod (5) and above and below the air outlet (3). A bias spring (8) and a shape-memory alloy spring (9) that deforms depending on the temperature of the air passing through the duct are stretched between the duct and the duct.

The blade (2) is connected to the springs (8) (9), the drive rod (5), and the spring receiving pieces (6) (7).
The drive unit is configured and installed.

In the figure, (10) and (11) are spring receiving pieces respectively provided on the drive rod (5).

The shape memory alloy spring (9) has a diameter of about 35 to 40
The state of contraction at a high temperature of °C is memorized.

Since the illustrated embodiment is constructed as described above, as shown in FIG.
In the normal state of 0″C, the shape memory alloy spring (9)
is a martensitic phase and is in a soft and easily deformable state, so it expands against the tensile force of the bias spring (8), and the drive rod (5) is pulled upward, causing each vane (2) to It rotates clockwise in the figure to close the lower outlet (3), leaving the duct (1) open upward, and the air in the duct is blown out from the upper outlet (12).

Next, as shown in Figure 1, warm air (
35~45″C), the shape memory alloy spring (
9) is heated to reach a transformation point temperature, recovers its shape, and contracts.

The restoring force of the spring (9) at this time is the bias spring (5).
), the drive rod (5) is pulled down. The blades (2) rotate counterclockwise in conjunction with the opening drive rod (5) through the large-diameter hole (5a) and the protrusion (2a), and the topmost blade (2) moves toward the stopper ( 4)
The duct (1) closes and the air passage is switched by colliding with the duct (1), and at the same time, the lower air outlet (3) is opened by each of the vanes (2), and thus the warm air coming from below the duct (1) is released. It is blown out from the lower outlet (3).

When cold air (approximately 15 to 20'C) is passed through the duct (1) from this state, the shape memory alloy spring (9) is cooled and turns into a martensitic phase, becoming soft and easily deformed, so that the bias spring (8) The drive rod (5) is pulled up by the force, and as shown in Figure 2, the lower air outlet (3) is closed and the upper side of the duct (1) is opened, so that the lower part of the duct (1) is opened. The cold air is blown out from the upper air outlet (12).

Note that the number and dimensions of the blades are selected depending on the size of the air outlet and duct.

Note that FIGS. 4 and 5 show the case where the present invention is applied to an air conditioning system for an individual's work environment, such as around a desk or workbench (2), respectively. cold/warm air duct)
(22), and FIG. 5 shows an example in which this device is connected to a fan coil unit (23).

In the figure (24) is a hot and cold water pipe.

On each side, the device automatically operates depending on the temperature of the air supplied to the duct (1), and the lower air outlet (3)
Warm air is blown out from the upper air outlet (12), and cold air is blown out from the upper air outlet (12), thereby providing heating and cooling that keeps the head cold and the feet warm.

(Effects of the Invention) As described above, the cold/hot air blowout adjustment device for a duct according to the present invention has a rotary drive device for the blower opening/closing and wind direction switching blade rotatably supported on the duct outlet. Since it uses a shape memory alloy spring that deforms depending on the temperature of the ventilation air, it does not require a power source or a power machine such as a motor, or a special temperature sensor. Wind direction can be switched.

The invention as claimed in claim 2 is characterized in that the driving portion of the blade for opening and closing the air outlet and for switching the wind direction is connected to a driving rod connected to a protrusion in the duct of the blade through two springs, a shape memory alloy spring and a bias spring. Since the device has a simple configuration in which it is connected to a duct, the device can be made smaller and lighter.

[Brief explanation of the drawing]

1 to 3 show an embodiment of the cold/hot air blowing adjustment device in a duct according to the present invention, FIG. 1 is a vertical side view showing the state when hot air is being blown out, and FIG. 2 is a longitudinal side view showing the state when blowing out cold air. FIG. 3 is a partially cutaway front view, and FIGS. 4 and 5 each show an example in which the present invention is applied to an air conditioner around a desk, workbench, etc. FIG. (1)--Duct, (2)--Blade for opening/closing air outlet and switching wind direction, (3)--Lower air outlet, (5)--Drive rod, (8)--Bias spring, (9)・-Memory alloy spring. Agent Patent Attorney Shige Okamoto 2 letters, 1 figure, 2 figures, 3 squares, 4 figures, 5 letters

Claims (2)

[Claims] (1) A blade for opening and closing the air outlet and switching the wind direction, which is rotatably supported on the air outlet of the duct, and a rotary drive device for the blade, which is made of a shape memory alloy spring that deforms depending on the temperature of the blown air in the duct. A cold/hot air blowing adjustment device in a duct, characterized by comprising: (2) A blade for opening/closing the air outlet and switching the wind direction that is rotatably supported on the air outlet of the duct, a drive rod connected to the protrusion inside the duct of each blade, and a connection between both ends of the rod and the duct. A cold/hot air blowing adjustment device in a duct, comprising a bias spring that connects the two, and a shape memory alloy spring that deforms depending on the temperature of the blown air in the duct.