JPH05261237A - Dry type dehumidifier - Google Patents

Abstract

PURPOSE:To obtain a compact device by quickening switching operation of a passage of an air to be treated and a recovered air and prolonging service life of an actuator for switching. CONSTITUTION:A shape memory alloy spring 3 used as the actuator is connected serially to a electric source 4 for a heater 2 for reproducing a dehumidifying element and is heated by the use of self-heat generation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention can be applied to a compact dry dehumidifier, such as a condominium closet, a closet, a system kitchen, a desiccator or a photo processor.

[0002]

2. Description of the Related Art An example of applying a conventional shape memory alloy spring to a dry dehumidifier is shown in FIG. In the figure, the shape-memory alloy spring c is contracted by the conduction heat of the heater b that regenerates the dehumidifying element a, and the valves d and e connected to the shape memory alloy spring c are opened and closed to switch the air passage to discharge the regenerated evaporated water. .

[0003]

In the conventional structure described above, since the heat conduction of the heater by diffusion is utilized,
It took time to heat the shape memory alloy spring, the switching operation of the valve was slow, the heat conduction was uneven, and the contraction rate of the spring varied depending on the location, which had problems such as affecting the life.

[0004]

The present invention has been made in view of the above problems, and a shape memory alloy spring is wired in series with a heater so that the shape memory alloy spring is heated by utilizing self-heating. When contracting, the valve is driven to open the inlet / outlet of the regeneration air, and when not energized, the valve is returned by the bias spring, and the inlet / outlet of the processing air is opened.

[0005]

In order to heat by utilizing self-heating in this way, the transformation temperature is instantly reached and the valve contracts, the switching operation of the valve is accelerated, the temperature unevenness of the spring is eliminated, and the contraction rate of each part is reduced. It is constant and ideal for life.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 shows an air passage switching valve structure in which the heater 2 is turned off during the dehumidifying process, and FIG. 2 shows the dehumidifying element 1.
Is a sectional view of the air passage switching valve structure in which the heater 2 is turned on during regeneration, and the dehumidifying element 1, the heater 2 and the power source 4 are housed in the case 5, and the heater 2 is A power supply 4 is wired in series with the shape memory alloy spring 3.

The one-way valves 6 are arranged on both sides of a lever 9 having a fulcrum 8 at the center of the case, and one of them is in communication with the opening of the case 5 so as to communicate with the dehumidifying space and the other communicates with the outside. It is configured to close the opening.

When the dehumidifying element 1 is regenerated, when the power source 4 is turned on and a current flows through the heater 2, a current also flows through the shape memory alloy spring 3 wired in series with this circuit, causing self-heating and instantaneously. It reaches the transformation temperature and shrinks. At this time, the lever 9 is rotated beyond the force of the bias spring 7 to drive the valve 6 fixed to the end thereof.

The dry dehumidifier valve requires a total of four inlets and outlets for processing air leading to the space for dehumidification and inlets and outlets for regeneration air for drying the dehumidifying element 1, but the structure shown in this embodiment was adopted. In this case, the inlet and outlet of the processing air and the regeneration air are opened and closed at the same time, and the number of parts can be reduced. Also, the power source consumed for opening and closing the valve can be small.

[0010]

As described in detail above, since the present invention is heated by the self-heating of the shape memory alloy spring, the temperature rises quickly, the opening / closing operation of the valve is accelerated, and the uneven temperature distribution is eliminated, resulting in a long service life. The adverse effect on Furthermore, since the switching valve structure is compact, it can be made smaller.
Useful for saving space.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention and is a sectional view of an air passage switching valve structure during dehumidification processing.

FIG. 2 is a sectional view of the air passage switching valve structure during regeneration of the dehumidifying element.

FIG. 3 shows a cross-sectional view of a conventional air passage switching valve.

[Explanation of symbols]

 1 Dehumidifying Element 2 Heater 3 Shape Memory Alloy Spring 4 Power Supply 5 Case 6 Valve 7 Bias Spring

Claims (1)

[Claims] 1. A switching path for processing air and regeneration air,
In a dry dehumidifier having a valve structure utilizing the driving force of a shape memory alloy spring, the shape memory alloy spring is energized and heated by a power source of a heater for regenerating a dehumidifying element to obtain a valve opening / closing operation. Is a dry dehumidifier.