JPS63319024A - Deodorizer and deodorizing device - Google Patents

Abstract

PURPOSE:To obtain a compact and portable deodorizer or deodorizing device withstanding vibration and shock by forming part of the body of a device with a membrane permeable to water and impermeable to a solute so that the solute held in the body does not escape from the body. CONSTITUTION:The body 21 of a deodorizer or a deodorizing device is composed of a vessel 3 and a membrane 1 permeable to malodorous gas and impermeable to a solute, e.g., a water-repellent porous membrane. The solute 2 absorbing malodorous gas, e.g., a lithium chloride-ferrous sulfate mixture is held in the vessel 3. A vapor-liq. interface is formed on part of the membrane, malodorous gas is absorbed and water is discharged from the surface of the membrane 1 and absorbed.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a deodorizer using a solute that absorbs moisture and odor gas by using a membrane that is permeable to moisture but not permeable to solute. and a deodorizing device.

[Conventional technology]

Conventionally known deodorizers include: (1) A container filled with coconut shell activated carbon (2) A device that sprays a fragrance Deodorizers include devices that spray a gas containing odorous gas onto the surface of the deodorized liquid.

[Problem that the invention seeks to solve]

However, such deodorizers and deodorizing devices both have a small capacity to absorb or adsorb odorous gases, making it difficult to maintain their effectiveness and use them for a long period of time.

Furthermore, in the case of the above item (iii), the perfume was ejected together with kerosene, etc., which could contaminate the room.

The deodorizer and deodorizing device of the present invention solve the above-mentioned drawbacks of the conventional example, and can be made smaller and lighter, and have a structure that prevents solutes that can absorb odor gas from coming out. The aim is to provide equipment.

Another object of the present invention is to provide a deodorizer and a deodorizing device that are resistant to vibrations and shocks, highly durable, compact and portable.

In a deodorizing device, the only interface between the deodorizing liquid and the gas is the liquid surface, so increasing the capacity requires increasing the size of the device, and there is also the drawback that the deodorizing liquid comes out of the device along with the gas. The aim is to provide a device that does not have these drawbacks.

[Means for solving problems]

The present inventors have conducted various studies to solve the above-mentioned problems, and have found that a mixture of lithium chloride, ferrous sulfate, etc. can be used as a solute that absorbs odorous gases.

That is, in the deodorizer and deodorizing device of the present invention, at least a part of the main body of the deodorizer and deodorizing device is formed of a membrane that is permeable to odorous gases and impermeable to solutes, These are deodorizers and deodorizing devices that contain solutes that absorb gas.

In the present invention, the membrane that is permeable to odorous gases and impermeable to solutes may be a water-repellent porous membrane having continuous pores with a diameter of 1 μm or less; The membrane is permeable to moisture. Water-repellent porous membranes are created by stretching a thin film of synthetic resin to make it porous, or by making paper from synthetic resin fibers to create gaps between the fibers.
It can be obtained by binding fine particles of carbon or synthetic resin with synthetic resin.

Furthermore, the membrane that is permeable to odorous gases and impermeable to solutes may be a membrane made of polysiloxane resin.

The solute used in this invention is lithium chloride, polyethylene glycol, common salt, sulfuric acid, calcium chloride, etc. with ferrous sulfate added, and should be selected appropriately depending on the type of gas to be deodorized and the relationship with the above-mentioned membrane. Good.

[Effect]

Since the deodorizer and deodorizing device of the present invention are configured as described above, at least a part of the main body of the deodorizer and deodorizing device is
By simply constructing a membrane that is permeable to odorous gases and impermeable to solutes, odorous gases can be efficiently transferred through this membrane.

In addition, in the deodorizer and deodorizing apparatus of the present invention, the type of gas to be deodorized can be selected depending on the material of the solute. For example, ammonia gas can be absorbed with glyoxal and sodium bisulfite.

〔Example〕

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the deodorizing device and the deodorizing device of the present invention will be described below based on the drawings.

FIG. 1 shows the basic configuration, and the main body 21 of the deodorizer and deodorizing device consists of a container 3 that can contain a solute 2 using a membrane 1 that is permeable to odorous gases and impermeable to solutes. It is made up of.

The membrane 1 that is permeable to odorous gases and impermeable to the solute 2 is a water-repellent porous film having countless continuous pores with a pore diameter of 1 μm or less, preferably 0° to 1 μm or less. It can be a membrane. Note that if the container 3 cannot maintain its desired shape due to an increase or decrease in the wall thickness of the solute 2, it is necessary to laminate a porous holding frame on the container 3.

The membrane 1 that is permeable to odorous gases and impermeable to solutes, which constitutes the deodorizer and deodorizing device of the present invention, is made of a water-repellent ceramic material made of fused silica, fused alumina, talc, boron nitride, etc. , compressed bodies or sintered bodies of carbon black or other substances, resin films or composite material films made by bonding these together using fluororesins, such as polytetrafluoroethylene or other resin binders,
Or it is created by these structures.

Mainly used materials are preferably polytetrafluoroethylene, fused silica, carbon black, etc., but are not limited to these, as long as they have continuous fine water-repellent pores of 1 μm or less. , can be used appropriately and satisfactorily.

In the above, if the diameter of the continuous pores exceeds 10 μm, not only the odorous gas but also the solute will pass through, which is not preferable. Further, the porosity of each membrane is preferably within the range of approximately 40% to 90%.

When the porosity of each membrane is less than 40%, the permeation rate of odorous gas is low, and when the porosity of each membrane is 90% or more, the pressure resistance of the membrane becomes insufficient, which is not preferable.

Such deodorizers and deodorizing devices form an air-liquid interface in a membrane 1 portion made of a water-repellent porous membrane, absorb odor gas, and discharge or absorb moisture from the surface of the membrane 1. do. In order to improve the response speed using the membrane 1, for example, the distance between the partition walls of the membrane 1 containing the solute 2 may be narrowed to reduce the thickness of the solute 2, or the thickness of the membrane 1 itself may be reduced. Just make it thinner.

Furthermore, the response speed can be increased by adding a mosaic layer of a water-repellent part and a parent wood part to the solute side of the membrane.

When manufacturing such resin films or composite material films having fine pores of 1 μm to 0.1 μm or less, polytetrafluoroethylene dispersion or fine powder and fine particles such as carbon black are mixed using solvent naphtha. It can be easily produced by mixing and forming into a thin film of about 1 mm using a mold or calendar roll, followed by heat treatment, hot pressing, or cold pressing followed by heat treatment. The temperature of the heat treatment is 300°C to 400°C, preferably about 380'C.

We also offer resin membranes made by biaxially stretching commercially available polytetrafluoroethylene to form pores (trade name: Voretex, manufactured by Nippon Voretex Co., Ltd.), and fine membranes obtained by papermaking from polytetrafluoroethylene fibers. Synthetic paper with gaps [Product name Polyflon Paper Daikin Industries, Ltd.]
[manufactured] can also be used.

FIG. 2 shows a deodorizing device in which membranes are stacked so that the deodorizing liquid and gas come into contact with each other across the membranes.

By doing so, the air/liquid interface can be significantly increased, resulting in an efficient deodorizing device.

[Brief explanation of drawings]

FIG. 1 shows a sectional view of the basic structure of a deodorizer and a deodorizing device, FIG. 2 shows an embodiment of the deodorizing device, and FIG. 3 shows a sectional view of the deodorizing device shown in FIG. → represents air flow. 1... Membrane 2... Solute 3... Container 4... Filter 21... Main body diagram 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. A membrane that is permeable to water and impermeable to solutes, which constitutes at least a part of the main body of a deodorizer or deodorizing device, and which absorbs water and odor gas into the main body. Deodorizers and deodorizing devices that store solutes. 2. A membrane that is permeable to water but not permeable to solutes is made of paper made of polytetrafluoroethylene containing water-repellent carbon black, polytetrafluoroethylene made porous by stretching, or polytetrafluoroethylene fibers. The deodorizer and deodorizing device according to claim 1, comprising a water-repellent porous membrane selected from the group consisting of porous fluorine resin, polyethylene, polypropylene, etc. 3. The deodorizer and deodorizing device according to claim 1, wherein the membrane that is permeable to water and impermeable to solutes is a polysiloxane resin membrane. 4. The deodorizer and deodorizing device according to claim 1, wherein the solute is a salt such as lithium chloride, an acid such as phosphoric acid, or an alkali such as caustic potash. 5. The deodorizer and deodorizing device according to claim 1, wherein the solute is a hygroscopic organic substance such as polyethylene glycol or glycerin. 6. The deodorizer and deodorizing device according to claim 1, wherein the solute is gelatinized with Aerosil or the like or whose fluidity is reduced with silica gel or the like.