JPH0216166Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a control device for a far-infrared heater that burns gas using a catalyst mat.

[Prior Art] In a catalytic gas combustor, far-infrared heating is obtained by oxidizing the combustion gas (catalytic combustion) in a catalytic mat supporting an oxidation catalyst, causing the reactor to burn red and generating infrared rays. When igniting, a so-called pre-combustion process is performed in which the temperature of the catalyst mat is raised using an electric heater to the temperature at which the catalyst is activated (generally 200°C).

[Problems to be solved by the invention] However, in the catalytic gas combustor, it takes about 5 to 7 minutes to preheat the catalytic mat with the electric heater, and then the combustion gas is not supplied to the catalytic gas combustor. and start far-infrared heating. For this reason, heating effects could not be obtained in a short period of time.

The object of the present invention is to provide a control device for a far-infrared heater that can provide a heating effect in a short time.

[Means for Solving the Problems] In order to achieve the above object, the far infrared heater control device of the present invention has a catalyst mat attached,
a catalytic gas combustor having a reactor in which the catalytic mat is heated to a set temperature by a heater;
When the temperature of the catalyst mat rises to a set temperature, the temperature sensor outputs a temperature increase signal, the gas supply means supplies combustion gas to the reactor, and the heater starts heating the catalyst mat, A configuration is adopted that includes an electronic control circuit that outputs an output to the gas supply means to supply combustion gas to the catalytic gas combustor after inputting a temperature increase signal.

[Actions and Effects of the Invention] With the above configuration, the far-infrared heater control device of the present invention has the following actions and effects.

First, a heater provided outside the reactor is ignited to obtain a heating effect, and the temperature of the catalyst mat of the catalytic gas combustor is raised to a set temperature. After inputting a temperature increase signal from the temperature sensor, combustion gas is supplied to the second reactor of the catalytic gas combustor to perform far-infrared heating. Therefore, the heating effect of the far infrared heater can be used immediately after the power is turned on without requiring the user to hold the catalyst for a specified period of time from when the user turns on the power until the temperature of the catalyst rises to the set temperature. Obtainable.

[Example] The present invention will be explained based on an embodiment shown in the drawings.

1 to 3 show a far-infrared gas stove to which an embodiment of the far-infrared heater control device of the present invention is applied.

1 indicates a far-infrared gas stove.

Reference numeral 2 denotes a gas burner, which is a heating device that generates red heat and generates infrared rays, which is attached to the lower half of the main body case 10 of the gas stove 1.

The main case 10 has an L-shaped step 11 made of a metal plate.
It consists of an attached inner frame 12, a back plate 13 made of a metal plate airtightly fixed to the small outer diameter opening surface of the step 11, and an outer frame 14. The outer frame 14 has a rectangular upper opening 15
A front plate 17 having a lower opening 16 formed therein and an L-shaped side plate 18 are provided. 1a and 1b are metal protectors, and 1c is an exhaust port.

The gas burner 2 includes a ceramic combustion plate 21 in which a large number of ejection holes 22 are formed, and a gas burner body 23.

The gas burner body 23 has a rear end portion 24 fixed to the main body case 10 parallel to the bottom plate of the main body case 10, and a gas inlet 25 is formed in the rear end portion 24. The wall portion 26 is provided with a spout 27 that opens into the gas burner 2.

3 shows a catalytic gas combustor having a reactor 5 to which a catalyst mat 4 is attached to the upper half of the main body case 10 of the gas stove 1.

The catalyst mat 4 is made of a heat-resistant material such as rock wool and is breathable.
It carries oxidized soot such as palladium.

The reactor 5 is a main body case 10 of the gas stove 1.
The gas burner 51, the inner wire mesh 61,
An outer wire mesh 62 is provided.

The gas burner 51 is arranged such that the back plate 13 of the inner frame 12 is parallel to the back plate 13, and the rear end portion 52 is parallel to the inner frame 12.
It is fixed to the inner frame 12 in a state that protrudes outward from the side plate, and a gas inlet 53 is formed in the rear edge part 52, and a large number of gas inlets opened in the inner frame 12 are formed in the tip edge part 54. Holes 55 are arranged in a row.

The inner wire mesh 61 is stretched such that the outer periphery 63 is fixed to the step 11 and is positioned substantially on the same plane as the step 11.

The outer wire mesh 62 is stretched over the large outer diameter opening surface of the inner frame 12 with the outer periphery 64 sandwiched between an edge 19 provided on the inner frame 12 and a presser plate 65 fixed with screws. There is.

Between the inner wire mesh 61 and the outer wire mesh 62,
Thick rock wool first mat 5 for heat retention
6. A second mat 57 made of thin rock wool and a catalyst mat 4 are sandwiched.

Reference numeral 6 indicates a temperature sensor of the catalyst mat 4, 7 indicates a gas supply means for independently supplying combustion gas to the gas burner 2 and the reactor 5, and 8 indicates a control device.

In this embodiment, a thermostat is used as the temperature sensor 6, and when the temperature sensing portion 60 is disposed between the second mat 57 and the catalyst mat 4, and the reactor 5 is attached to the side wall of the main body case 10, It is fixed in the position where it will become the upper part. When the temperature of the catalyst mat 4 rises to the temperature at which the catalyst is activated (200° C. in this embodiment), the temperature sensor 6 changes its contact from a closed state to an open state and outputs a temperature increase (OFF) signal.

The gas supply path means 7 is a main electromagnetic safety valve (hereinafter abbreviated as main electromagnetic valve) provided in the gas pipe 71.
VM, a governor valve VG provided downstream of the main solenoid valve VM, a first gas supply path 72 that supplies combustion gas to the gas burner 2, and a first gas supply path 72 provided in the first gas supply path 72. An electromagnetic gas safety valve (hereinafter abbreviated as the first electromagnetic valve) V1, a second gas supply path 73 that supplies combustion gas to the reactor 5, and a second electromagnetic gas safety valve provided in the second gas supply path. Gas safety valve (hereinafter abbreviated as second solenoid valve) V2 and gas inlet port 53
and a nozzle 75 attached to the gas inlet 25.

The control device 8 has an electronic control circuit 81 and a remote control device box (remote control box) 82.

The remote control box 82 has an operation switch 83,
Capacity selector switch 84, operation (display) lamp 8
5. Strong operation (display) lamp 86, weak operation (display)
A lamp 87 is provided.

The main body of the gas stove 1 has an appliance operation lamp 8.
8 is installed.

The electronic control circuit 81 opens and closes the main solenoid valve VM, the first solenoid valve V1, and the second solenoid valve V2 according to input signals from the temperature sensor 6 and the remote control box 82, and also opens and closes the main solenoid valve VM, the first solenoid valve V1, and the second solenoid valve V2. 8
5. Strong operation (display) lamp 86, weak operation (display)
The lamp 87 and appliance operation lamp 88 are turned on or off.

The operation of this embodiment will be explained based on the time chart shown in FIG.

Manually fully open the main gas valve and turn on the power (not shown).

As shown in Figure 4 A, remote control box 8
When the operation switch 83 of No. 2 is turned on, the electronic control circuit 81 generates an output that turns on (ON) the operation lamp 85, the weak operation lamp 87, and the appliance operation lamp 88, as shown by R, N, and O in FIG. .

Furthermore, the electronic control circuit 81 is as shown in FIG.
As shown in (g) and (h), an output is generated to open the main solenoid valve VM and the first solenoid valve V1 and close the second solenoid valve V2.

Therefore, the combustion gas is ejected from the ejection hole 22 of the gas burner 2, and as shown in FIG. 4C, combustion of the gas burner 2 is started and heating is performed. Furthermore, the exhaust heat from the gas burner 2 heats the catalyst mat 4 of the catalytic gas combustor 3 to a set temperature (usually 200
Heat to ℃).

Therefore, without making the user wait until the temperature of the catalyst mat 4 rises to the set temperature, the heating effect of the gas stove 2 can be activated after turning on the operation switch 83.
You can get it immediately.

When the gas burner 2 is burnt for about 9 minutes at an air temperature of 0°C, the temperature of the catalyst mat 4 of the catalytic gas combustor 3 rises to 200°C or higher, at which point the catalyst is activated.
At this time, the contact of the temperature sensor 6 changes from the closed state to the open state, as shown in E of FIG. 4, and outputs a temperature increase (OFF) signal to the electronic control circuit 81.

Then, the electronic control circuit 81 inputs the temperature increase signal from the temperature sensor 6, opens the main solenoid valve VM and the second solenoid valve V2, and opens the first solenoid valve VM and the second solenoid valve V2, as shown in FIG. Generates an output that closes solenoid valve V1.

Therefore, the combustion gas is ejected into the inner frame 12 from the gas burner 51 ejection hole 55, passes through the first mat 56 and the second mat 57 which are heat insulators, and a catalytic reaction occurs within the catalyst mat 4, as shown in FIG. As shown in Figure 4, low-heat firing of the gas stove 1 with only the catalytic gas combustor 3 starts (ON), and as shown in Figure 4C, the heating of the infrared combustor 2 is stopped (OFF). do.

After continuing weak combustion in the gas stove 1 using only the catalytic gas combustor 3 (for about 6 minutes in this embodiment), as shown in FIG. The electronic control circuit 81 is
As shown in Figure 4, strong operation lamp 86
, and turn off the weak operation lamp 87 (when there is no need to switch to strong operation, such as when the weak combustion of the catalytic gas combustor 3 has a far-infrared heating effect, set the capacity selector switch 84 to low). ).

Furthermore, the electronic control circuit 81 again generates an output to open the first electromagnetic valve V1, as shown in FIG. Therefore, the combustion gas is transferred to the gas burner 5.
1 continues to be ejected into the main body case 10 from the ejection hole 55 of the gas burner 2, and ejected from the ejection hole 22 of the gas burner 2, as shown in FIG.
auxiliary combustion is started (ON) and gas stove 1
Performs strong combustion. Here, strong combustion may be performed using only the catalytic gas combustor 3 by increasing the gas supply amount rather than weak combustion.

Then, manually turn on the power or operation switch 8.
By turning 3 off and closing the main gas valve,
The operation of the gas stove 1 ends.

In this example, the combustor was a gas burner, but
It may be made red hot by the heat generated by an electric heater. In this case, turn on the electric heater at the same time as you turn on the power.
ON, the electronic control circuit controls the electric heater to turn OFF after the catalytic mat of the catalytic gas combustor reaches the set temperature.

In this example, the catalytic gas combustor was placed above the heater, but the heater and the catalytic gas combustor may be placed in any position that allows the heat generated by the heater to heat the room and the catalytic mat. It's okay if it's done.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a far-infrared gas stove to which an embodiment of the far-infrared heater control device of the present invention is applied, and Fig. 2 is a far-infrared type gas stove to which the far-infrared heater control device of the present invention is applied. A cross-sectional view of the second reactor of the gas stove, FIG. 3 is a schematic diagram showing the configuration of a far-infrared gas stove to which the far-infrared heater control device of the present invention is applied, and FIG. 4 is a far-infrared heater of the present invention. 1 is an operation time chart of an embodiment of a heater control device. In the diagram, 1... far infrared gas stove, 2...
Heater (gas burner), 3...catalytic gas combustor,
4... Catalyst mat, 5... Reactor, 6... Temperature sensor, 7... Gas supply means, 8... Control device, 1
0...Body case, 21...Combustion plate, 81
...Electronic control circuit, VM...Main solenoid valve, V1
...First solenoid valve, V2...Second solenoid valve, 72...
First gas supply path, 73... second gas supply path.

Claims (1)

[Claims for Utility Model Registration] 1. A catalytic gas combustor having a reactor in which a catalyst mat is attached and the catalyst mat is heated to a set temperature by a heater; a temperature sensor that outputs a temperature increase signal when heated; a gas supply means for supplying combustion gas to the reactor; after the heater starts heating the catalyst mat and inputs the temperature increase signal; A control device for a far-infrared heater, comprising: an electronic control circuit that outputs an output to the gas supply means to supply combustion gas to the catalytic gas combustor. 2. The far-infrared heater control device according to claim 1, wherein the heater is a gas burner that generates red heat by combustion of combustion gas. 3. Utility model registration claim 2, characterized in that the gas supply means supplies combustion gas to the gas burner and the reactor, respectively, independently.
A control device for a far-infrared heater as described in Section 1. 4. The gas supply means includes a first supply path that supplies combustion gas to the gas burner, a first electromagnetic gas safety valve provided in the first supply path, and a first supply path that supplies combustion gas to the reactor. 4. The control device for a far-infrared heater according to claim 3, which is a utility model, and includes a second supply path and a second electromagnetic gas safety valve provided in the second supply path. 5. The electronic control circuit first opens the first electromagnetic gas safety valve to supply combustion gas to the gas burner at the time of ignition, and after inputting a temperature increase signal from the temperature sensor, controls the catalytic gas combustor. 5. The far-infrared heater control device according to claim 4, wherein the second electromagnetic gas safety valve is opened to supply combustion gas to the infrared heater. 6. The remote control according to claim 5, wherein the electronic control circuit closes the first electromagnetic gas safety valve after opening the second electromagnetic gas safety valve. Control device for infrared heater.