JPS60111812A - Heater - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a heating device, for example a heating device for a gas water heater, which has a tact for quantitative exhausting.

BACKGROUND OF THE INVENTION In heating devices of this type, it is known to provide an adjustable pulp in a vent installed on the device body for discharging combustion residue. The pulp makes it possible to regulate the inflow of fresh air into the bar y, thus increasing the efficiency of the device (ie the effective calorific value per unit of fuel used), while maintaining a constant discharge of exhaust gases. Such retention is necessary to avoid the undesirable effects of unexpected airflow.

When this pulp is opened, a portion of the fresh air is distributed directly to the combustion waste outlet.

When the device is operated with a fuel supply of 11 (as is the case with devices with adjustable between a constant and a small supply of fuel, the amount of air supplied to bar 1 is If it remains constant, the efficiency of the device will decrease.Therefore, when operating with a small amount of fuel, it is desirable to open the pulp by a predetermined opening to reduce the amount of air entering the burr.Figures 3 and 4 The conventional heating device shown in FIG. 5 and FIG. This is an example.

In the heating apparatus shown in FIGS. 3 and 4, a pulp shutter (1) is installed in an airtight hood (2) or a tact located above the main body of a shutter (3). , ensuring the exhaust of combustion waste gases by the fan (4). When the shutter opens, it allows fresh air (5) to enter, which is mixed with the combustion waste at point (6).

The device shown in FIGS. 3 and 4 has a bimetal (9) placed above the main body of the part (3);
17) controls the shutter (1) of Xibalf. Bimetal (9) depending on the strength of heating by combustion gas
regulates the opening degree of the shutter (1). When the combusted gases reach a certain temperature and the fuel supply to the burner is reduced,
The temperature of the combustion gas decreases unless the amount of air supplied to the bar yαυ is reduced. In this case, the bimetal (9) acts to open the shutter (see FIG. 4). At that time 2S
-101), the amount of fresh air pumped into the tank decreases and the efficiency returns to normal. As the firepower increases, the temperature of the combustion gas increases, and in order to return to a steady state, the bimetal works in the opposite direction and closes the shutter to some extent.

Therefore, a constant efficiency can be obtained regardless of the magnitude of the output of Shi-3, and this can be achieved very simply.

Instead of a bimetal, it is also possible to use heat-sensitive means, such as a thermostat in the form of a sphere or tube (hereinafter referred to as "enclosure") containing an expandable liquid. The enclosure is arranged like a bimetal and controls the shutter like a bimetal for thermal response of the liquid contained within the enclosure.

In the heating device shown in FIGS. 5 and 6, a heat-sensitive member, such as a bimetal or thermostat (7), is placed under the bar 'f0) or near the burner, which controls the supply of fuel to the burner. It is heated by heat radiation from Shi-3 according to the amount of supply. In the case of an inclusion, the inclusion is connected to the receiver (8) and is connected to the Drad α of the shirt 9 (1) in the same way as a bimetal.
Control power. When the shutter is at full output, if strong heat radiation is applied to the heat-sensitive member, the member closes the shutter (
(See Figure 5). When reducing the output of the fire, the heat-sensitive member opens the shutter (see Figure 6) when the power of the fire is weakened and the heat dissipation is reduced.

Problems to be Solved However, even if the above-mentioned conventional devices operate reliably and effectively, they cannot necessarily be called ideal in the following respects.

That is, when the burner is stopped, the temperature drops and the control member opens the shutter. Therefore, at the time of ignition and immediately after ignition, under conditions of natural ventilation, the burner is not sufficiently supplied with air and there is a risk of incomplete combustion.

It is an object of the present invention to automatically obtain a substantially constant system efficiency, which is a substantially optimum condition for the operation of the burner at various flame strengths, and to ensure that the air supply to the burner is sufficient at and immediately after the burner peak. To provide a heating device in which there is no possibility of incomplete combustion.

Means for Solving the Problems The above objects of the present invention are characterized in that: (g) a tactile device is provided with a sump pulp for air inflow into the tactile device; a heat-sensitive pulp control device configured to open and close the pulp according to the thermal output of the burner, the pulp control device being electrically operated to control fuel supply to all of the burners; This is accomplished by a heating device connected to the pulp.

According to the invention, at the time of ignition of the burner and immediately thereafter, the pulp for introducing air into the waste gas discharge tact is closed, and in the subsequent operating conditions this pulp substantially optimizes the efficiency of the installation. Since the pulp is controlled by a heat-sensitive pulp control device that opens and closes the pulp according to the heat output of the burner, sufficient air is supplied to the burner when the burner is ignited and immediately after, preventing incomplete combustion. During burner operation, a substantially constant device efficiency is automatically obtained, which is a substantially optimum condition for the operation of the burner at various heat temperatures. This will be explained with reference to FIG.

In the embodiment of FIGS. 1 and 2, a thermostat (not shown) responsive to the thermal output of the burner Q, a switch (6) that can be turned on and off by the thermostat, and a mask wired to the switch are shown. A thermosensitive pulp control device is constituted by a net or an electromagnet 6η whose movable core is connected to a valve shutter (1).

The inflow of gas into the burner 0υ is controlled by a solenoid valve that switches the amount of gas supplied between two levels: large and small.

Switching between these two is done by the solenoid ■ of the solenoid valve.

This is done by displacing 4e and Ql by excitation of 0◇. The preceding symbol -7 stat controls the switch (6), θ→, and the switch has a different temperature to control the burner.

To increase heating, the two switch contacts are closed (see Figure 1), and the solenoids (4◇, θ■ are energized, pulp (c), 0→ are opened, and both passages θ and 2) are energized. Gas is supplied through.

When the fuel supply is low (FIG. 2), the thermostat causes the switch to open, the solenoid θp is deenergized, the pulp is closed, and the pulp θG is left open. Fire extinguishing (stop supply of y-sulfur, stop operation of equipment)
To do this, switch (6) (contact t43 is opened, pulp@. and ni) is closed and the gas supply is cut off.

ts -”r (11) A portion of the air supplied to the solenoid valve...
It is controlled as a ttuna 194 action.

As mentioned above, when the shutter (1) is fired during the exhaust tact, the fan (4) sucks all the air into the burner Ql).
supplied to This state corresponds to the "strong flame of the burner".

When the shutter (1) is open, a portion of the air sucked in by the fan (4) flows through the orifice covered by the shutter, so that a small amount of air enters the burner (1). I don't think it will be supplied, this is a burner fire
Stay “weak”.

These results are obtained by electrically controlling the displacement of the shutter (1) as well as turning on and off the solenoid 0υ by turning on and off the switch (6).

When the device is stopped, the shutter (1) remains open, but at and immediately after the ignition, the shutter (1) is closed and air is sufficiently supplied to the burner Oη. Even when restarting with either high flame (shutter closed) or low flame (shitter open), the air supply to the burner always maintains a state adjusted to W4 with respect to the fuel supply.

In this embodiment, the shutter (1) is controlled by a magnet 6υ having a movable core connected to the shutter, and the wiring (L3) connects the magnet 61 to the solenoid valve...
Connect to the power supply side of the solenoid θp.

When the switch (6) is closed and power is applied to the Macnet G]), the Shishi P vine (1) is closed, and when the switch (6) is open and the Macnet ψυ is off, the shutter (1) is opened. Ru.

The present invention is not limited to the embodiments described above, and the coffin can be modified without departing from the gist of the present invention. For example, the valve in the tact may be a butterfly valve or a flag valve, and a lever connected to the butterfly valve or flag valve may be controlled by a McNet, and a mechanical return (electric stop type with 6 means or an overnight or The opening of the shutter of the pulp may be adjusted according to Stellar Tanabata.

It is of course also possible for the control device to control the inflow of secondary combustion air in a conventional type of combustion chamber.

Furthermore, the fire power is adjusted by the fuel control AM solenoid valve, and in step 3, it is also possible to control the mucknet 61) for controlling the shutter and to adjust the fresh air for the firepower. . In this way an air supply is obtained that is exactly proportional to the fuel supply.

Effects of the Invention As described above, according to the present invention, it is possible to automatically obtain a substantially constant device efficiency, which is a substantially optimum condition for the operation of the burner at various flame strengths, and to control There is an advantage in that a heating device can be provided in which the air supply is sufficient and there is no possibility of incomplete combustion.

[Brief Description of the Drawings] Figures 1 and 2 illustrate the present invention! Example “Strong” and 1
Figures 3 and 4 are schematic diagrams in the state of low fire intensity.
The figure is a schematic diagram of the "strong" and "weak" flame states of one example of the conventional heating device, and Figures 5 and 6 are the schematic diagrams of the "strong" and "weak" flame states of another example of the conventional heating device y. It is a schematic diagram. (1)...Valve shutter, (2)...Duct, (3)...Shi-ta, (4)...Fashion (exhaust system), (5)...・Fresh air, 01)... Burner, θη... Solenoid, θ m, i-,, Switch, (L4 Yu... Solenoid, (C), (C)... Valve , 0711(c)...Passway,...Solenoid valve, 61)...Macnet, (Ll), (L2), (L3)...Wiring. (or more) Taste 0 Soaking

Claims (1)

[Scope of Claims] 1. A gas burner, and a duct connected to the gas burner and equipped with an exhaust device for forced exhaustion of a certain amount, and a tact comprising a pulp for causing air to flow into the duct. a heat-sensitive pulp control device adapted to open and close the pulp in response to the thermal output of the burner so as to substantially optimize the efficiency of the device; , a heating device connected to the electrically operated pulp controlling the fuel supply to said burner. 2. The heating device according to claim 1, wherein the valve control device is electrically connected to a solenoid for the pulp that controls fuel supply. (2) The heating device according to claim 2, wherein the pulp is operated by an electromagnet having a movable core connected to the pulp. (2) The heating device according to claim 1 or 2, wherein the pulp is operated by a lever operated by an electromagnet. (2) The heating device according to claim 1 or 2, wherein the pulp is operated by a step-by-step septater that adjusts the opening of a shutter. (2) In order to adjust the amount of fuel supplied, it has a variable outlet device with an electrically operated pulp, and the electrically operated pulp is connected to the valve control device and the air to the bar y. 4. A device as claimed in claim 3, which is connected to reservoir means for adjusting the feed rate.