JP2745965B2 - Humidity adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a humidity control device capable of controlling the humidity inside a sealed container.

[0002]

2. Description of the Related Art FIG.
FIG. 1 is a cross-sectional view illustrating a configuration of a conventional humidity control device disclosed in Japanese Patent Application Laid-Open Publication No. HEI 10-133456. In the figure, reference numeral 1 denotes a sealed container having an opening 2, 3
Is a humidity control element composed of first and second porous electrodes 5 and 6 separated from each other by a membrane 4 made of a proton conductive solid, and 7 is fixed in an airtight state so as to surround the humidity control element 3. The periphery of the frame 7 is fixed to the opening 2 of the sealed container 1 in an airtight state with the second porous electrode 6 of the humidity adjusting element 3 facing the atmosphere. Reference numeral 8 denotes a DC power supply for applying a voltage to the first and second porous electrodes 5 and 6 via the lead wire 9 to make the first porous electrode 5 side positive.

Next, the operation will be described. The moisture contained in the gas in the sealed container 1 is subjected to the following reaction at the interface between the positively charged first porous electrode 5 and the membrane 4 made of a proton-conductive solid by applying a voltage from the DC power supply 8. Is generated. H ₂ O → 2H ⁺ + 1 / 2O ₂ + 2e ^{− By} this reaction, the water contained in the gas in the sealed container 1 is decomposed, and the oxygen molecules in the above reaction formula remain in the sealed container 1. The decomposed hydrogen ions move toward the negatively charged second porous electrode 6 in the diaphragm 4 made of a proton conductive solid. The hydrogen ions that have reached the second porous electrode 6 cause the following reaction at the interface between the second porous electrode 6 and the diaphragm 4 made of a proton conductive solid. 2H ⁺ + 1 / 2O ₂ + 2e ⁻ → H ₂ O or 2H ⁺ + 2e ⁻ → H ₂ This reaction produces water or hydrogen from hydrogen ions,
It is released to the space in contact with the second porous electrode 6. Thereby, the inside of the sealed container 1 is dehumidified. .

[0004]

Since the conventional humidity controller is constructed as described above, the DC power supply 8 must be installed in a separate place, and takes up space.
However, when the device is stopped due to a failure or the like, the humidity adjusting device cannot be operated, and the DC power supply 8 supplies only one direction of current, so that only the dehumidification can be performed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and provides a humidity control device which does not take up space, can continuously operate even if the power supply is stopped due to a failure, and can perform dehumidification. The purpose is to:

[0006]

SUMMARY OF THE INVENTION A humidity adjusting apparatus according to the present invention has a frame which is hermetically sealed around an opening provided in a sealed container and has an opening in the center and is formed of an insulating member. A photovoltaic element fixed around the opening of the frame in a hermetic state, a secondary battery fixed around the opening of the frame in a hermetic state and arranged inside the photovoltaic element, the opening of the frame A humidity control element, comprising a first and a second porous electrode, which are fixed inside the secondary battery in a hermetically sealed state, are disposed inside the secondary battery, and are separated from each other by a diaphragm made of a proton conductive solid; A reaction chamber formed between the battery and the humidity control element, a plurality of ventilation paths penetrating the photovoltaic element and the secondary battery and communicating the reaction chamber with the atmosphere, and electricity generated by the photovoltaic element sealed in the frame. Charging energy to secondary battery and controlling electric energy Those having a supply controller humidity adjusting element.

[0007]

The humidity controller according to the present invention charges the electric energy obtained by the photovoltaic element to the secondary battery, and continues the electric energy charged to the secondary battery even when the photovoltaic element is stopped to adjust the humidity. It can be supplied to the element, and the controller can switch the current between positive and negative to dehumidify and dehumidify.In addition, the photovoltaic element, the secondary battery, and the humidity adjustment element are integrated with the frame, and the controller is installed inside. Making it compact allows for compactness.

[0008]

【Example】

Embodiment 1 FIG. FIG. 1 is a cross-sectional view illustrating a configuration of a humidity adjusting device according to Embodiment 1 of the present invention. In the figure, reference numerals 1 to 6 are the same as those of the conventional device, and therefore, the same reference numerals are given and the description is omitted. 10 is a substrate, 11 and 12 are photovoltaic elements and secondary batteries respectively arranged on both sides of the substrate 10, 13 is a reaction chamber formed between the secondary battery 12 and the humidity adjusting element 3, and 14 is a The stacked photovoltaic elements 11, the substrate 10,
A frame made of an insulating member that is fixed in an airtight manner so as to enclose the periphery of the secondary battery 12, the reaction chamber 13, and the humidity adjustment element 3. The periphery of the frame 14 is a sealed container with the photovoltaic element 11 facing the atmosphere. It is fixed to the opening 2 in an airtight manner. 1
Reference numeral 5 denotes a plurality of ventilation paths which penetrate the photovoltaic element 11, the substrate 10, and the secondary battery 12 and communicate the reaction chamber 13 with the atmosphere. The electric energy generated by the photovoltaic element 11 is
And a controller that controls the electric energy and supplies the humidity adjusting element 3 with the electric energy.

Next, the operation of the humidity controller of the first embodiment configured as described above will be described. First, the photovoltaic element 1
At 1, light energy is converted into electric energy, and the electric energy is charged from the controller 16 through the lead 17 to the secondary battery 12, while being supplied to the humidity adjusting element 3. When the dehumidification of the sealed container 1 is performed, a voltage having a positive value on the first porous electrode 5 side is applied to the first and second porous electrodes 5 and 6 from the controller 16, as in the conventional case. In the humidity adjusting element 3, the following reaction occurs at the interface between the positively charged first porous electrode 5 and the membrane 4 made of a proton conductive solid. H ₂ O → 2H ⁺ + 1 / 2O ₂ + 2e ^{− By} this reaction, the water contained in the gas in the sealed container 1 is decomposed, and the oxygen molecules in the above reaction formula remain in the sealed container 1. The decomposed hydrogen ions move inside the proton conductive solid 4 toward the second porous electrode 6 which is negatively charged. The hydrogen ions that have reached the second porous electrode 6 cause the following reaction at the interface between the second porous electrode 6 and the diaphragm 4 made of a proton conductive solid. 2H ⁺ + 1 / 2O ₂ + 2e ⁻ → H ₂ O or 2H ⁺ + 2e ⁻ → H ₂ This reaction produces water or hydrogen from hydrogen ions,
Released into the reaction chamber 13. Water or hydrogen is discharged to the atmosphere via the ventilation path 15. Thereby, the inside of the sealed container 1 is dehumidified.

Next, when the sealed container 2 is humidified, a voltage having a positive value on the second porous electrode 6 side is applied to the first and second porous electrodes 5 and 6 from a controller 16. The reaction in the case proceeds in the reverse of the reaction in the case of the dehumidification, and water or hydrogen is released into the sealed container 1 and the gas in the sealed container 1 is humidified. The capacity of the dehumidifying / humidifying operation thus performed is controlled by adjusting the current supplied to the humidity adjusting element 3 by the controller 16.

Embodiment 2 FIG. In the first embodiment, the diaphragm 4
Although the material of the proton conductive solid constituting the above is not mentioned, if the proton conductive solid is made of, for example, Nafion 117 (manufactured by DuPont, USA) or the like,
If the supply of electric power from the secondary battery 12 cannot be received, moisture is absorbed into the proton conductive solid having a single hygroscopic property, and it is electrochemically decomposed immediately when the electric power can be supplied, so that it is immediately decomposed. The start of dehumidification can be made possible.

[0012]

As described above, according to the present invention, the photovoltaic element, the secondary battery, and the humidity adjusting element are integrated in a frame, and the controller is incorporated in the frame, thereby making it possible to reduce the size. In addition, by controlling the controller, the electric energy generated by the photovoltaic element is charged to the secondary battery, and the charged electric energy is supplied to the humidity adjustment element, thereby enabling continuous operation. By switching the applied voltage of the humidity adjusting element, it is possible to provide a humidity adjusting device capable of dehumidifying and humidifying.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view illustrating a configuration of a humidity control device according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating a configuration of a conventional humidity adjustment device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sealing container 2 Opening 3 Humidity adjustment element 4 Diaphragm 5 1st porous electrode 6 2nd porous electrode 7, 14 Frame 11 Photovoltaic element 12 Secondary battery 13 Reaction chamber 15 Ventilation path 16 Controller

Continued on the front page (51) Int.Cl. ⁶ Identification code FI G05D 22/02 G05D 22/02 H01M 14/00 H01M 14/00 P

Claims (2)

(57) [Claims] 1. A frame which is fixed to an opening provided in a sealed container in an airtight state around the periphery and has an opening in the center and is formed of an insulating member, and an airtight state around the opening in the opening of the frame. The fixed photovoltaic element, the secondary battery fixed around the opening to the opening of the frame in an airtight state, and the secondary battery arranged inside the photovoltaic element, the periphery fixed to the opening of the frame in an airtight state, A humidity control element disposed inside the secondary battery and composed of first and second porous electrodes separated from each other by a membrane made of a proton-conductive solid, between the secondary battery and the humidity control element A plurality of ventilation paths that penetrate the photovoltaic element and the secondary battery and communicate the reaction chamber and the atmosphere side, the photovoltaic element sealed in an insulating member of the frame. Charge the secondary battery with the electrical energy generated in And a controller for controlling the electric energy and supplying the electric energy to the humidity adjusting element. 2. The humidity controller according to claim 1, wherein the proton conductive solid is formed of a hygroscopic member.