JP2000055471A - Combustion apparatus equipped with air cleaner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cleaner-equipped combustion apparatus which is improved such that the life of an air cleaning function using an adsorbent is prolonged. SOLUTION: The present air cleaner equipped combustion apparatus 1 includes an air cleaner containing an adsorbent 15 and a combustor 33. In the apparatus, a piping 23 is provided on a port 31c of a three-way valve 31 of a heating instrument section 30 and a port 13b of a three-way valve 13 of an air cleaner section 10, and a piping 27 is provided on a port 17b of a three-way valve 17 of the air cleaner section 10 and a port 41c of a three-way valve 41 of the heating instrument section 30 and a port 17b of a three-way valve 17 of the air cleaner section 10. Hereby, high temperature gas is passed through the adsorbent 15 to release adsorbed components, and the high temperature gas containing the adsorbent component is again inserted into the combustor 33 and an oxidization catalyst 35 for cleaning.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a combustion device for an indoor heater such as a gas fan heater having an air purifying function. In particular, the present invention relates to a combustion device with an air purifier improved so as to extend the life of an air purifying function using an adsorbent.

[0002]

2. Description of the Related Art FIG. 2 is a schematic diagram showing a conventional combustion device with an air purifier. In this combustion device with an air purifier, the air purifier unit 50 and the heating unit 70 were provided independently.

[0003] In the air purifier section 50, first, dirty air in the room is taken in through a high-performance filter 51 for removing fine particles such as dust and pollen, and further passed through an adsorbent 55 for removing gases such as odorous components. . The purified air is sent into the room by the fan 59. In the heating unit 70, the combustion gas and the air for combustion and dilution are taken in, and the combustion gas and the air for combustion are supplied to the combustion unit 73 such as a burner.
The gas is burned by the to generate high temperature hot air. This warm air is diluted with the dilution air to produce warm air at a predetermined temperature, and sent into the room by the fan 77.

[0004]

Activated carbon is generally used as the adsorbent 55 of the air purifier section 50. Activated carbon is saturated when a large amount of malodorous components is adsorbed during long-term use. Also, this system does not have a reversible process for desorbing adsorbed components. Therefore, the activated carbon had to be replaced each time the adsorption was saturated.

The present invention has been made in view of such problems, and has as its object to provide a combustion apparatus with an air purifier that can extend the life of an air purifying function using an adsorbent.

[0006]

Means for Solving the Problems In order to solve the above problems, a combustion device with an air purifier of the present invention is a combustion device with an air purifier including an air purifier containing an adsorbent and a combustor. Means for passing hot gas from the combustor through the adsorbent, and means for recharging the hot gas passed through the adsorbent into the combustor.

In a normal air cleaning function and a combustion function, a high-temperature gas is passed through an adsorbent to remove adsorbed components, and a high-temperature gas containing the adsorbed components is re-input to a combustor to generate a purified high-temperature gas. An adsorbent regeneration means was added. By this means, the adsorbed component can be desorbed from the adsorbent which has been saturated by use for a long time, and the life of the adsorbent can be extended.

In the combustion device with an air purifier of the present invention, it is preferable to pass the high-temperature gas through the adsorbent from the downstream to the upstream of the adsorbent in the normal operation state. Further, it is preferable that the high-temperature gas that has passed through the adsorbent is introduced into a combustion air supply line of the combustor. Furthermore, it is preferable that the combustor includes a combustion section such as a gas burner and an oxidation catalyst disposed downstream of the combustion section. Due to the positional relationship of these parts, during regeneration of the adsorbent, high-temperature gas is passed through the adsorbent in the saturated adsorption state to desorb the adsorbed components,
A high temperature gas containing the adsorbed component is burned, and the combustion gas is passed through an oxidation catalyst to form a closed system that generates a purified high temperature gas. With this system, desorption of the adsorbed gas from the adsorbent and purification by oxidation of the desorbed gas can be performed more effectively.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing a combustion device with an air purifier according to one embodiment of the present invention. (A) shows an adsorbent regeneration operation, and (B) shows a normal operation. The combustion device with an air purifier includes an air purifier unit 10 that removes fine particles such as dust and pollen from indoor air, and a gas that is burned, and a high-temperature combustion gas is diluted with air to a predetermined temperature and discharged into the room. A heating unit 30 is provided. In the air purifier section 10, a high-performance filter 11, an adsorbent 15, and a fan 19 are arranged from the upstream. In the heating unit 30, a combustor 33 such as a gas burner, an oxidation catalyst 35, and a fan 39 are arranged from the upstream.

The high-performance filter 11 includes an air purifier 10
And is connected to an adsorbent 15 through a three-way valve 13. Activated carbon or an adsorbent having activated carbon and a deodorizing function is used as the adsorbent 15. The adsorbent 15 is connected via a three-way valve 17 to a fan 19 installed at the air outlet. When the fan 19 operates, the room air is taken into the air purifier section 10 through the high-performance filter 11 from the air suction port. The air from which the fine particles have been removed by the high-performance filter 11 then passes through the adsorbent 15. Here, the odorous components of the gas are removed. The purified air is sent into the room again from the air outlet by the fan 19.

The heating equipment section 30 is provided with a connection section with a supply source of combustion gas, a combustion and dilution air suction port, and a combustion section 33 such as a gas burner through a three-way valve 31.
Connected to. An oxidation catalyst 35 is arranged downstream of the combustion section 33. A fan 39 is provided downstream of the oxidation catalyst 35, and is connected to a hot air outlet via a three-way valve 41. The dilution air pipe 25 is externally connected to an intersection 37 between the oxidation catalyst 35 and the fan 39.
Indoor air generally contains a trace amount of odor components, and these odor components are removed by the air purifying function. Further, the odor component contained in the combustion air is burned in the combustion section 33, but is not completely burned, and a trace amount of the odor component remains. The oxidation catalyst 35 is provided for oxidizing and removing the unburned odor components.

The combustion gas and the combustion air are taken into the heater through the pipe 21 from the gas pipe and the intake port opened into the room, respectively. The dilution air is taken in from the inlet through the pipe 25. The combustion gas and a part of the air are sent to a combustion section 33 such as a gas burner through the ports 31a and 31b of the three-way valve 31, and the combustion section 33 burns the combustion gas to generate warm air. This warm air passes through the oxidation catalyst 35 and oxidizes and removes a small amount of odor components contained in the indoor air. On the other hand, the dilution air is sent from the pipe 25 to the intersection 37 to dilute the temperature of the hot air and adjust it to an appropriate temperature. The warm air after the temperature adjustment is blown out of the warm air outlet by the fan 39.

A pipe 23 is provided between the port 13b of the three-way valve 13 of the air purifier section 10 and the port 31c of the three-way valve 31 of the heating equipment section 30, and the three-way valve 17 of the air purifier section 10 is provided.
The pipe 27 is also provided between the port 17b of the heating device 30 and the port 41c of the three-way valve 41 of the heating device section 30.

The flow of air during normal operation will be described with reference to FIG. The port 13b of the three-way valve 13 and the port 31c of the three-way valve 31 at both ends of the pipe 23 are closed. Also, piping 2
Port 17b of the three-way valve 17 at both ends of the port 7 and port 41 of the three-way valve 41
c is also closed. All other valve openings are opened.
Therefore, the air purifier unit 10 and the heating unit 30 function independently. That is, in the air purifying device section 10, room air is sucked from the air suction port,
The air from which fine particles have been removed passes through the high-performance filter 13 and enters the adsorbent 15 through the ports 13a and 13c of the three-way valve 13. The adsorbent 15 removes malodorous components in the air, and is blown out of the air outlet by the fan 19 through the ports 17a and 17c of the three-way valve 17.

In the heating unit 30, the combustion gas, the combustion air and the dilution air are taken in through a pipe 21 through a gas pipe and a take-in opening opened in the room. The combustion gas and a part of the air are sent to a combustion section 33 such as a gas burner via a three-way valve 31, where the combustion gas is burned to generate hot air, and the oxidizing catalyst 35 removes odor components. Done. The dilution air is sent from the pipe 25 to the intersection 37 to dilute the temperature of the hot air generated in the combustion section 33 and adjust the temperature to an appropriate temperature. The warm air after the temperature adjustment is blown out of the warm air outlet by the fan 39.

FIG. 1 shows the flow of air during the adsorbent regeneration operation.
This will be described with reference to FIG. At this time, the port 13a on the high-performance filter side of the three-way valve 13 of the air purifier section 10 and the three-way valve 1
7, the fan-side port 17c is closed. All other valve openings are opened. Therefore, the adsorbent 15, the combustion section 3
3. A system for circulating the oxidation catalyst 35 and the fan 39 is formed.

When the fan 39 is operated, the combustion gas and the combustion air are taken in from the gas pipe and the intake port opened into the room through the pipe 21. Dilution air is taken in through a pipe 25. Combustion gas and air are supplied to the port 3 of the three-way valve 31.
The combustion gas is sent to the combustion section 33 such as a gas burner and the oxidation catalyst 35 via 1a and 31b, and the combustion gas is burned to generate hot air. A part of the hot air is blown out from the port 41b of the three-way valve 41, but a part is sent to the pipe 27 through the port 41c.
Further, this hot air passes through the three-way valve ports 17b and 17a,
The adsorbent 15 is passed from a downstream position during normal operation. Since the adsorbed component to the adsorbent 15 is mainly adsorbed by physical adsorption, reversible desorption is likely to occur, and the adsorbed component containing a bad smell is desorbed from the activated carbon by warm air. The hot air containing the desorbed adsorbed components is supplied to the ports 13 c and 13 b of the three-way valve 13.
Through the pipe 23, and further into the port 31 of the three-way valve 31.
It is sent to the combustion part 33 via c and 31b. Here, the adsorbed component is burned, oxidized and purified by an oxidation catalyst 35 disposed further downstream. Therefore, oxidation catalyst 3
The warm air that has passed through 5 is in a state in which the adsorbed components have been substantially removed, and by repeating this cycle, the adsorbed components of the adsorbent 15 are desorbed and removed.

[0018]

As is apparent from the above description, the combustion apparatus with an air purifier according to the present invention allows high temperature gas to pass through the adsorbent to desorb adsorbed components in the ordinary air cleaning function and combustion function.
The high-temperature gas containing the adsorbed component is re-injected into the combustor for purification, and an adsorbent regenerating means for generating a high-temperature gas has been added. And prolong the life of the adsorbent.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing a combustion device with an air purifier according to one embodiment of the present invention. (A) shows an adsorbent regeneration operation, and (B) shows a normal operation.

FIG. 2 is a schematic configuration diagram showing a conventional combustion device with an air purifier.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Combustion apparatus with an air purifier 10 Air purifier part 11 High-performance filter 13 Four-way valve 15 Adsorbent 17 Three-way valve 19 Fan 21, 23, 2
5, 27 Piping 30 Heating unit 31 Three-way valve 33 Combustion unit 35 Oxidation catalyst 37 Intersection 39 Three-way valve 41 Three-way valve

Claims (6)

[Claims] 1. An air purifier containing an adsorbent, a combustor,
A combustion device with an air purifier comprising: means for passing hot gas from the combustor through the adsorbent; means for recharging the hot gas passed through the adsorbent into the combustor;
A combustion device with an air purifier, comprising: 2. The combustion device with an air purifier according to claim 1, wherein the high-temperature gas is passed through the adsorbent from a downstream side to an upstream side of the adsorbent in a normal operation state. 3. The combustion device with an air purifier according to claim 1, wherein the high-temperature gas passed through the adsorbent is introduced into a combustion air supply line of the combustor. 4. The combustion device with an air purifier according to claim 1, wherein the combustor includes a combustion section such as a gas burner and an oxidation catalyst disposed downstream of the combustion section. 5. The combustion device with an air purifier according to claim 1, wherein the combustion device with an air purifier is an indoor heater such as a gas fan heater. 6. The combustion device with an air purifier according to claim 1, wherein the adsorbent is activated carbon.