JPH03230015A - Gas controller - Google Patents

Abstract

PURPOSE:To considerably improve ease of use of a gas cooking apparatus by providing a first gas flow path with a gas pressure controller, a second gas flow path with an orifice, a nozzle located at the end of the gas flow path and a gas on-of means to control the caloric power. CONSTITUTION:A gas path 1 is equipped with a governor 3 as a gas pressure controller, and a gas path 2 is provided with an orifice 4. The gas paths 1 and 2 join together, and the gas flows to a burner 6 via a nozzle 5. A valve disc 7 of a gas on-off caloric power controller is connected to a knob 9 via a connecting rod 8 and slid with the rotation of the knob 9. Moreover, the valve disc 7 is pressed on a body 11 by a spring 10. When the knob 9 is turned to a position of caloric power 'Weak', gas flows along only the gas path 1. When the knob 9 is turned to a position of caloric power 'Strong', gas flows along both gas paths 1 and 2, and the total gas flow rate becomes equal to the flow rate of gas which passes through the governor 3 plus the flow rate of gas which passes through the orifice 4.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF THE INVENTION The present invention relates to a gas control device that controls the heating power of gas cooking appliances.

Conventional technology Flat ceramic burners, which are often found in the grills of gas cooking appliances these days, burn gas near the ceramic surface to make the burner surface red hot, and cook food using the infrared rays it generates. It is. However, in order to burn gas near the burner, it is necessary to stabilize the amount of gas supplied to the burner. Since the amount of gas is proportional to the square root of the gas pressure, gas pressure adjustment means are essential for gases on the market that are supplied at various gas pressures.

Conventionally, this gas pressure adjusting means is as shown in FIG.

It was located between the gas opening/closing means that started and stopped the gas flow and the fire power adjustment means that adjusted the fire power.

Problems that the invention aims to solve However, in a gas control device configured as above.

Two operating sections were required, one for opening and closing the gas and the other for adjusting the firepower, which posed the problem of being very difficult to use and expensive to use. The present invention aims to solve such conventional problems.

Means for Solving the Problems In order to achieve the above object, the gas control device of the present invention includes:
A first gas passage having an adjustment means, a second gas passage having an orifice, a nozzle located at the rear end of the flow passage where the two gas passages merge, and a nozzle located at the rearmost part of the flow passage; The gas opening/closing means is located in front of the gas passage and has at least an orifice and is configured to flow or stop the gas in the second gas passage.

Function The gas control device of the present invention can integrate the gas opening/closing means and the thermal power adjusting means with the above configuration.

EXAMPLE Hereinafter, an example of the present invention will be described based on the drawings.

As shown in FIG. 1, the gas passage 1 has a governor 3 which is a pressure regulating means. On the other hand, the gas passage 2 has an orifice 4, the gas passage 1 and the gas passage 2 merge, and the nozzle 5
The gas flows to the burner 6 through the . Note that the orifice and nozzle may be replaceable and the governor may be adjustable in order to accommodate various gas types currently supplied on the market.

Figure 2 shows the gas opening/closing thermal power adjustment means. The closure 7 is connected to a knob 9 via a connecting rod 8, and slides as the knob 9 rotates. Furthermore, the closure 7 is forced onto the body 11 by a spring 1Q. Figure 3 shows the movement of the claustrum. FIG. 3a shows a state in which the gas is closed, and the flat contact between the closure 7 and the body 11 shuts off the gas. Knob 9
When the is rotated to the low heat position, the closure 7 is in the position shown in Figure 3, and gas flows only into the gas passage 1.

It will flow to both passageways 2.

Next, FIG. 4 shows the relationship between the primary pressure, which is the pressure before the gas passes through the governor, and the secondary pressure, which is the pressure after the gas passes through the governor. In this way, the secondary pressure remains at a certain pressure P even if the primary pressure increases.
becomes constant. Therefore, if the pressure P is set below the lowest pressure of the supply gas, the flow rate of the gas is proportional to the square root of the pressure, and therefore remains constant even if the primary pressure, which is the pressure of the supply gas, changes.

On the other hand, the flow rate of gas flowing through the orifice is proportional to the square root of the primary pressure applied to the orifice, as shown in FIG. Therefore, when the knob 9 is in the "high" position, gas flows through both gas passages, so the gas flow rate is the sum of the amount of gas when it passes through the governor and the amount of gas when it passes through the orifice, as shown in Figure 6. become that way.

Therefore, by setting the gas flow rate at "low" thermal power and the gas flow rate at "high" thermal power at the highest pressure in the combustible range of a certain burner, the thermal power can be adjusted.

Effect of the invention According to the gas control device of the present invention as described above.

Gas opening/closing and firepower adjustment can be integrated into one operation unit, making it possible to significantly improve the usability of the gas cooking appliance, and at the same time, reducing costs.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram of a gas control device that is an embodiment of the present invention, FIG.
The figure is an operation diagram of the gas opening/closing thermal power adjustment means, and Figure 4 is a characteristic diagram showing the relationship between primary pressure and secondary pressure when equipped with a governor.
Fig. 5 is a characteristic diagram showing the relationship between the amount of gas flowing through the orifice and the primary pressure, and Fig. 6 is a characteristic diagram showing the relationship between the primary pressure and the gas flow rate at high and low heating power in an embodiment of the present invention. , FIG. 7 is a block diagram of a conventional gas control device. 1...Gas passage 1.2...Gas passage 2
．． 3... Governor, 4... Orifice, 5...
... Nozzle, 6 ... Burner, 7 ... Closer, 8 ... Connecting rod, 9 ... Knob, 10.
...Spring, 11...Body.

Claims (1)

[Claims] a gas pressure adjustment means for adjusting the gas pressure to a constant level; an orifice for regulating the flow rate of the gas; a first gas passage having the gas pressure adjustment means; a second gas passage having the orifice; The gas passages of the two gas passages join together, and a nozzle located at the rearmost part of the flow passage and a nozzle located at the front of the two gas passages allow gas in at least the second gas passage of the two gas passages to flow. A gas control device that is equipped with a gas opening/closing means that can stop and switch the gas, and is configured to adjust the firepower of the gas.