JPS605246Y2 - Heat adjustment device for gas appliances - Google Patents

Description

[Detailed description of the invention] This invention relates to a heat amount adjustment device for gas appliances such as gas stoves, and after the gas cock is fully opened and ignited, the amount of heat is adjusted by another gas flow rate adjustment means, and the amount of heat is adjusted.
That is, the present invention provides a heat amount adjusting device that is safe and easy to use because the flame does not go out even when the gas heat amount is reduced to a small value.

With conventional gas stoves, for example, the amount of heat is controlled exclusively by the gas cock, so it is extremely difficult to reduce the fire power to the minimum amount of heat, that is, a simmering flame, using the control knob. It is clear from experience that this is often the case.

Therefore, in actual use, it is not only inconvenient but also problematic in terms of safety.

This invention eliminates such conventional drawbacks, and one embodiment thereof will be described below with reference to the drawings.

In the drawing, 1 is a cock shaft, 2 is a governor adjustment shaft provided parallel to the cock shaft 1, and 5 and 6 are examples of linking means, which connect a hook-shaped cam rod 5 fixed to the cock shaft 1 and the governor. It consists of a lever 6 fixed to an adjustment shaft (hereinafter simply referred to as the adjustment shaft) 2, and the outer surface of the hook part of the hook-shaped cam rod 5 and the side surface of the lever 6 are set to the fully closed position of the cock shaft 1. A gas governor A, which is a gas flow rate adjusting means installed in the gas passage 3, is equipped with a cam plate 7 at the tip of the adjusting shaft 2, which circumscribes each other to restrain the adjusting shaft 2 at the position.
The pressure regulating valve 4 is connected to a diaphragm 8, a pressure regulating spring 9 and an operating shaft 1.
When the cock shaft 1 is set to the fully closed position, the cam plate 7 pushes the pressure regulating valve 4 downward as shown in the figure, setting the pressure regulating valve 4 to its maximum opening degree, and ignites and burns the burner. , and turn the cock shaft 1 90' counterclockwise as shown in the figure.
When the fully open position is reached, the cam rod 5 and the lever 6 are released, allowing the adjustment shaft 2 to rotate independently in the clockwise direction shown in the figure, and gas is supplied to the main burner until the pressure regulating valve 4 reaches its minimum opening degree. The structure allows for fine adjustment of the supply amount.

In this case, if the entire length of the operating shaft 10 is made adjustable, the elastic force of the pressure regulating spring 9 can be finely adjusted, which is more convenient.

A gas cock 11 is provided at the tip of the cock shaft 1, and opens and closes the gas passage 3 on the upstream side of the gas governor A. Further, engagement steps 12 and 12' are provided at the base end of the lever 6, and the main body A stopper 13 drilled in is engaged to restrict the rotation range of the adjustment shaft 2 to a certain range (approximately 90 degrees).

In the figure, 14 is a cock shaft operating knob, 15 is an adjustment shaft operating knob, and 16 is a bypass hole provided in the gas governor A to ensure the minimum flow rate of gas, regardless of whether the pressure regulating valve 4 is opened or closed. It is something that flows.

Since this device is constructed as described above, when the cock shaft 1 is rotated approximately 90 degrees counterclockwise in FIG. to ignite the burner (the position of the cam rod 5 indicated by the chain line in Figure 1).

At this time, since the adjustment shaft 2 remains in the restrained position and does not rotate, the lever 6 is at the uppermost position, and the cam plate 7 has its most protruding part at the lowermost position, adjusting the pressure regulating valve 4 of the gas governor A. It is pressed down against the pressure spring 9 and maintained at the maximum opening degree position to maintain a normal combustion state (the state shown by the solid line in FIG. 1).

Next, when the adjusting shaft 2 is rotated clockwise by itself in order to lower the amount of heat, the pressure regulating valve 4 gradually rises along the cam surface of the cam plate 7 via the operating shaft 10, the pressure regulating spring 9, and the diaphragm 8. The degree of opening is narrowed and the amount of gas supplied is reduced to weaken the firepower of the burner and reduce the amount of heat. However, when the adjustment shaft 2 has rotated approximately 90 degrees, the engaging stepped portion 12' provided at the base end of the lever 6 engages the stopper. 13 to prevent its rotation, and in this position, the pressure regulating valve 4 has the minimum opening degree, and the bypass hole 16
Coupled with this, the combustion of the burner is kept at a simmering state, so the flame is not extinguished and the combustion continues at a simmering state. This serves to prevent the amount of gas flowing into the burner from instantaneously becoming zero due to a sudden rise, regardless of the restrictions of the stopper 13.

Also, at this time, the tip of the lever 6 hits the cam rod 5 fixed to the cock shaft 1, and in conjunction with the restriction by the locking step 12, 12' and the stopper 13, double restriction is achieved, further improving safety. .

Next, when you want to stop using the stove, that is, to completely extinguish the burner, turn the cock shaft 1 approximately 90 degrees clockwise to close the gas cock 11 and stop the gas supply. When the lever 6 is engaged with the cam rod 5, the adjustment shaft 2 is simultaneously rotated counterclockwise to return the pressure regulating valve 4 to its original position (maximum opening degree), and the gas governor A is automatically returned to its normal operating state. This is to restore the power and prepare for the next ignition.

As explained above, this invention has a structure in which the amount of heat of the gas appliance is adjusted by a gas flow rate adjustment means provided separately from the gas cock, and the gas flow rate adjustment means is provided with a bypass hole and a rotation regulating means. As a result, even if the gas flow rate adjustment means is fully throttled, the minimum opening degree is ensured and the flame does not extinguish, making it extremely safe in actual use. It has the effect of solving the shortcomings of conventional products at once, such as improved ignition rate and ease of use.

[Brief explanation of the drawing]

FIG. 1 is a front view showing an embodiment of this invention, and FIG. 2 is a plan view. 1...cock shaft, 2...adjustment shaft, 3.
...Gas passage, 4...Pressure regulating valve, A...
...Gas governor, 5...Cam rod, 6...
...Lever, 7...Cam plate, 16...
Bypass hole.

Claims (1)

[Scope of utility model registration request] A gas flow rate adjustment means and a gas cock are interposed in series in the gas passage to the main burner, and the gas flow rate adjustment means and the gas cock are restrained to return to the maximum flow position when the gas cock is closed by an appropriate linking means. The gas flow rate adjusting means is characterized by being provided with a bypass hole for ensuring the minimum flow rate of the gas, and the interlocking relationship is released during the opening operation so that the gas flow rate can be operated independently up to the minimum flow rate position. A heat adjustment device for gas appliances.