JPS6016250A - Humidifier - Google Patents

Abstract

PURPOSE:To remove odor components derived from humidifying water, by a method wherein an oxidizing agent consisting mainly of an oxidizing acid such as permanganic acid, chromic acid, dichromic acid, molybdic acid, tungustic acid and nitric acid or a salt thereof is added to a tank for storing condensed water, in a humidifier for humidifying a room by utilizing condensed water derived from a combustion exhaust gas. CONSTITUTION:A combustion gas is fed into an oxidizing device 7 for odor components through a heat exchanger 4, a heat-exchanging header 5 and heat-exchanging pipes 6, and is then exhausted to the exterior of the room. In addition, air is passed through the outside surfaces of the heat exchanger 4 and the pipes 6 by a fan 6 to heat the room by a hot air flow. Condensed water derived from the oxidizing device 7 is fed to a humidifying pan 10 through a humidifying pipe 9, is evaporated, and the water vapor is fed into the room through a humidifying port 11 to humidify the room. When potassium permanganate is used as an oxidizing substance 18, formaldehyde and acetaldehyde which are the odor substances dissolved in water condensed on fins 13 are removed through decomposition.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a humidifier that humidifies a room by using dew condensation water generated from combustion exhaust gas, and its purpose is to remove odor components generated from the humidification water. .

In general, there is a trace amount of formaldehyde in the condensed water obtained from oil combustion exhaust gas.

Acetaldehyde, ketones, unburned gas hydrocarbons (hereinafter referred to as unburned hydrocarbons), hydrocarbons that have been modified by oxidation to some extent (hereinafter referred to as modified hydrocarbons), nitrogen oxides, sulfur oxides, carbon dioxide , silica and chloride. When this condensed water is used as humidifying water, formaldehyde, acetaldehyde, ketones, unburned hydrocarbons, modified hydrocarbons, nitrogen oxides, and sulfur oxides among the trace components mentioned above will diffuse into the room along with water vapor, causing unpleasant The condensed water could not be used directly as humidifying water because of the odor and certain irritating odors that caused discomfort. The present invention eliminates these conventional drawbacks, and one embodiment thereof will be described below with reference to the accompanying drawings.

In FIGS. 1 to 3, kerosene is stored in an oil tank 2 provided at the inner lower part of an oil hot air fan 1.
The oil is sent from here to the burner 3 by a pump or the like, where it is vaporized and burned. The combustion gas is transferred from the heat exchanger 4 to the heat exchange header 5.
．． It is sent to the oxidizer 7 for odor components through a heat exchange vibro, and then exhausted to the outside. The fan 8 blows air through the outer surface of the heat exchanger 4 and the heat exchange vibro to heat the room with hot air. The condensed water obtained from the oxidizer is sent through the humidifying pipe 9 to the humidifying tray 10, where it evaporates and is sent as water vapor into the room through the humidifying port 11 to humidify the room.

FIG. 4 shows the oxidizer 7, in which the exhaust gas coming out of the heat exchanger vibro is discharged outdoors from the exhaust port 12, but the moisture in the exhaust gas is condensed on the fins 13, and the condensed water is transferred to the tank. 14 and is sent from a connection port 15 to a humidifying tray 10 via a humidifying pipe 9. The fins 13' are cooled by the cold outdoor air taken in from the intake port 16, thereby cooling the fins 13. Note that this outdoor air is sent to the burner 3 through the burner intake port 17.

Next, the oxidizing device 7 in the above configuration will be explained. It is said that the average person can smell formaldehyde at 0.5 ppm and acetaldehyde at 26 ppm or more in the air. Many such aldehydes are generated in the exhaust gas during ignition and extinguishing, and are dissolved in the dew condensation water on the fins 13.

However, such aldehydes are relatively easy to oxidize and decompose, becoming water and carbon dioxide gas through acid, and can be converted into odorless substances. The present invention skillfully utilizes such properties and provides an oxidizing substance 18 in the tank 14 to decompose and remove the formaldehyde and acetaldehyde. Next, a case where potassium permanganate KM n O4 is used as an example of the oxidizing substance 18 will be shown. Potassium permanganate KMnO4 reacts as described below under acidic conditions such as sulfur H2SO4 mixed in dew condensation water, and generates active oxygen, which oxidizes and decomposes aldehydes.

2KMn○4+3H2S04→2S○4+2Mn5Q
4+3H20+50) When reacting with aldehyde, odor components are removed as follows.

5HcHO+2KMno4+5H2S○4→5HCOO
H (formic acid) 102S○4+2MnSO4+3H20sH
cOOH+2KMno4+5H2So4- 2S0 to 4
4+2Mn5○4+8H20+5CO2↑5c) (CH
○+2KMn04+3H2SO4→5CH3CoOH(
Acetic acid) 102SO4+2Mn5Q4+3H206CH3
C○OH+8KMnO4+12H2So424 to 2S0
4+8Mn5o4+13H20+10Co2 In the above embodiment, the oxidizer 7 is connected to a heat exchange vibro, but it may also be built in a removable supply/exhaust pipe that takes in air from outside and exhausts it to outside. You can lower the temperature further to obtain a large amount of condensed water.

In addition, as the oxidizing substance 18, one or more of oxidizing acids, such as permanganic acid, chromic acid, dichromic acid, molybdic acid, tungstic acid, nitric acid, etc., or a mixture thereof, or Silver chloride, lead peroxide′,
It may be composed of one, more than one, or a mixture of substances whose main component is an oxidizing substance such as manganese dioxide.

As described above, according to the present invention, comfortable humidification can be performed because there is no unpleasant odor or irritating odor.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a warm air heater that employs a humidifying device according to an embodiment of the present invention, Fig. 2 is a similar front view, Fig. 3 is a top view of the machine, and Fig. 4 is a schematic diagram of the machine. FIG. 5 is a sectional view taken along line 8-A' in FIG. 4. 7...oxidizer, 1o...humidifying dish.

Claims (3)

[Claims] (1) An exhaust path for exhausting combustion exhaust gas, an air supply path provided in thermal contact with this exhaust path, a tank for storing condensed water provided in the exhaust path, and a humidifier connected to this tank. This humidifier is equipped with an oxidizer that oxidizes and removes harmful components from condensed water in the upper tank. (2) In the oxidizing device, one or more of oxidizing acids such as permanganic acid, chromic acid, 9 dichromic acid, molybdic acid, tungstic acid, nitric acid, etc., or salts thereof, or a mixture thereof are present. A humidifying device according to claim 1, wherein the humidifying device is provided with an oxidizing substance consisting of: (3) Claims in which an oxidizing substance consisting of one or more of oxidizing substances, such as silver tetrachloride, lead peroxide, manganese dioxide, etc., or a mixture thereof, is provided in the oxidizing device. The humidifying device according to item 1.