JPS6354919A - Dehumidifier - Google Patents

Abstract

PURPOSE:To obtain a noiseless dehumidifier of low running cost which is constructed with smaller number of parts, by providing a gas separating unit installed with the gas separating membrane of selective permeability for water vapor, a pump which increases or decreases inner pressure of the gas separating unit, and a discharge pipe with a nonreturn valve. CONSTITUTION:One end or both ends of hollow yarns 11 are fixed to a gas-tight chamber 12 by epoxy resins, etc., and said yarns are covered with a dustproof filter 14 to constitute a gas separation unit 13. When the bellows 15 is compressed, the gas in the bellows is flowed through the opened nonreturn valve 17 and discharged to the outdoors, etc., through a discharge pipe 18. When the compression force is removed, the bellows 15 tends to return to the original state by the restoring force of a spring 16, and the inner part of the unit 13 is decompressed, and the water vapor is introduced through the hollow yarns 11 into the inner part of the unit 13 by the pressure difference between the atmosphere and said inner part. The introduced water vapor is discharged through the nonreturn valve 17 and the discharge pipe 18 to the outdoors, etc., when the bellows 15 is compressed again. By repeating these actions, dehumidification of a room is carried out.

Description

[Detailed description of the invention] [Technical field] The present invention relates to air conditioning in homes, particularly to dehumidifiers.

[Background Art] Figure 4 shows a conventional heat pump dehumidifier.
It consists of a compressor 1, a condenser 2, an evaporator 3, a blower 4, a drain tank 5, and a drain pan 6.Indoor air is first passed through the evaporator 3 by the blower 4, and the condensed water is dehumidified there and sent to the drain. It is received by bread 6 and collected in drain tank 5. The cooled indoor air is heated by the condenser 2 and returned indoors. As described above, conventional dehumidifiers have a large number of parts, high running costs, and are quite noisy.

[Object of the Invention] The present invention was made in view of the above-mentioned drawbacks, and its object is to provide a dehumidifier that has a small number of parts, low running costs, and is noiseless.

[Disclosure of the Invention] The present invention will be described based on the embodiments shown in FIGS. 1 to 3.

(Example 1) FIG. 1 shows a first example of the present invention.
Reference numeral 1 denotes a gas separation hollow fiber serving as a gas separation membrane that selectively passes water vapor. Both ends or one end of the hollow fiber 1 are fixed in an airtight chamber 12 with epoxy resin or the like, and constitute a gas separation unit 13. 14 is a dustproof filter that covers the gas separation hollow fiber 11; 15 is a bellows as a pump that reduces and pressurizes the internal pressure of the gas separation unit 14, and has an anti-compression spring 16 inside.
has. A check valve 17 opens when the bellows 15 is compressed and closes when the bellows 15 is restored. Reference numeral 18 denotes an exhaust pipe connected via the check valve 17, the tip of which opens outdoors or the like.

Next, the operation of the dehumidifier configured as described above will be explained.

When the bellows 15 is compressed, the gas inside the bellows 15 passes through the opened check valve 17 and is exhausted to the outdoors or the like via the exhaust pipe 18. When the compressive force is removed, the bellows 15 attempts to return to its original state due to the restoring force of the spring 16. Then, the pressure inside the gas separation unit 13 is reduced, and water vapor enters the inside of the gas separation unit 13 via the gas separation hollow fiber 11 due to the pressure difference with the atmosphere. The water vapor that has entered is removed by the bellows 15.
When it is compressed again, it is exhausted to the outdoors etc. via the check valve 17 and the exhaust pipe 18. Therefore, by repeating the above operations, the room is dehumidified.

(Embodiment 2) Fig. 2 shows a second embodiment of the present invention, in which a piston mechanism is used in place of the bellows 15 in Embodiment 1, and the piston mechanism consists of a cylinder 25a and a piston 25b. . Note that 27 is a check valve that is configured to open during the compression process and close during the pressure reduction process.

The operation of this embodiment is almost the same as that of the first embodiment, in which the piston 25b compresses the inside of the cylinder 25a, the gas inside is exhausted through the check valve 27, and the piston 25b compresses the inside of the cylinder 25a.
When the force applied to b is removed, the piston 25b moves in the direction of the arrow due to gravity or magnetic force, the interior of the cylinder 25a is depressurized, and water vapor enters the interior. When the inside of the cylinder 25a is compressed again by the piston 25b, the water vapor that has entered is exhausted through the check valve 27.

(Embodiment 3) FIG. 3 shows a third embodiment of the present invention, in which a gas separation unit 33 was constructed by arranging gas separation hollow fibers 31 in parallel or by weaving them into a flat sheet shape. It consists of a pump 35 and piping 39, and is functionally similar to the first embodiment. Note that the gas separation unit 33
It is more preferable to cover it with a dustproof filter.

[Effects of the Invention] As described above, the dehumidifier according to the present invention includes: a gas separation unit having a gas separation membrane that selectively passes water vapor; a pump that reduces and pressurizes the internal pressure of the gas separation unit; It is connected to a gas separation unit and consists of an exhaust pipe with a check valve that closes when depressurizing and opens when pressurizing, providing a dehumidifier with a simple structure, fewer parts, low running costs, and no noise. can do:

[Brief explanation of drawings]

FIG. 1 is a simplified sectional view showing the first embodiment of the present invention;
3 is a perspective view showing a third embodiment of the invention, and FIG. 4 is a simplified sectional view of a conventional example. 11.31... Gas separation membrane, 13.33... Gas separation unit, 15, 25.35... Pump, 17゜2
7...Check valve.

Claims (2)

[Claims] (1) A gas separation unit having a gas separation membrane that selectively passes water vapor; a pump that reduces and pressurizes the internal pressure of the gas separation unit; and a pump that is connected to the gas separation unit and closes when the pressure is reduced and opens when the pressure is increased. A dehumidifier consisting of an exhaust pipe with a check valve. (2) The dehumidifier according to claim 1, wherein the gas separation unit is constructed by using gas separation hollow fibers in the form of a flat sheet.