JPS6115392Y2 - - Google Patents

Description

[Detailed explanation of the invention] This invention allows, for example, when the gas supply is changed from a low-calorie gas to a high-calorie gas, the change can be made immediately without changing the model or internal structure of the gas tank. It has been devised to be able to handle the gas that is generated.

Conventionally, it has been common practice to install a needle valve in the gas tank to limit the gas flow rate, and to replace the needle valve with another needle valve that matches the gas pressure and its accompanying parts when switching gases. However, taking out the internal parts and replacing them with new ones requires a lot of effort for disassembly and assembly, and even the slightest change has a large effect on the gas pressure, so it is necessary to make fine adjustments. The adjustment work was extremely troublesome.

In order to deal with these conventional problems, this invention uses a tool such as a screwdriver to remove the vinyl restriction rod that is screwed into the hollow vertical hole of the flow control valve when the gas type is changed. This eliminates the above-mentioned drawbacks of the conventional method by making it possible to respond to the gas pressure after switching with a simple one-touch operation by inserting it from the outer end of the hollow vertical hole and pushing it in. Its configuration is the same as that of the gas inlet 1. Outlet 2
In a gas tank, which has a main gas passage hole 4 and is fitted with a closure 6 that is rotatably operated by an operating shaft 5, the main gas hole 4 is inserted into a passage 7 toward the gas outlet of the gas tank main body by moving forward and backward. A flow control valve 8 made of a hollow cylindrical body that can freely change the flow rate to widen or narrow is provided, and a screw-type needle restriction rod 12 that opens and closes a second needle hole 11 is moved forward and backward into the hollow vertical hole 9 of the flow control valve 8. Screw it in tightly,
The head 12a of this needle limiting rod 12 faces the outer end opening 9a of the hollow vertical hole 9.

The flow rate control valve 8 is mounted so that it can be rotated by operating a control lever 13, and as a result of the rotation, an indoor pin 14 protruding from the outer periphery of the hollow cylindrical body changes the slope formed on the side of the pot body 3. Fixed cam surface 1 consisting of a surface
5 in the front-back direction (arrow A,
(b)). When the tip 8a of the flow rate control valve 8 enters the passage 7 toward the gas outlet 2 (in the direction of arrow A) and narrows the passage to the minimum, the first and second needle holes 10, 1
Gas flows through only 1, so it is suitable for small fires, and conversely, when retracting toward the front (arrow B), the passage 7 becomes wider, and both the widened passage 7 and the two needle holes 10 and 11 are used. As gas flows through the area, the amount of gas reaches its maximum, resulting in a large fire.

When switching from low calorie gas to high calorie gas, insert a tool such as a screwdriver into the outer end port 9a of the hollow vertical hole 9 of the flow control valve 8 and screw the head 12a. The needle limiting rod 12 is pushed into the deepest part. Then, the two needle holes 10 and 11, which had been in communication until now, will now be closed as shown in FIG. 3, so only the first needle hole 10 will be in communication. Become. If the first needle hole 10 is specified in advance so as to correspond to the high calorie gas pressure when the number of the first needle holes 10 is one, it will be possible to easily correspond to the gas pressure after switching without replacing parts. Adjustment of large flame and small flame in the gas pressure after switching is carried out by moving the flow rate control valve 8 forward and backward by operating the lever 13 to change the width of the passage 7, as in the case before the switching.

As explained above, this device is a needle restriction rod that makes only the first needle hole by pushing the first and second needle holes in the hollow vertical hole of the flow control valve provided in the gas passage of the Kotoku body. When changing the gas type, it is possible to immediately respond to the gas after the change by simply pushing the needle restriction rod through the outer end of the hollow vertical hole, and it is not necessary to replace parts like in the past. There is no need to replace the gas tank itself with a compatible model, and it is easy to operate.
Adjustment work is also easy and can be carried out at low cost.

[Brief explanation of the drawing]

FIG. 1 is a partially longitudinal side view of a gas tank in which the present invention is implemented, and FIGS. 2 and 3 are enlarged sectional views of the flow rate control section, the former showing the state before switching and the latter showing the state after switching. 1...Gas inlet, 2...Gas outlet, 3...
Kotoku main body, 4... Main gas vent, 5... Operating shaft,
6... Closer, 7... Passage, 8... Flow rate control valve, 9
...Hollow vertical hole, 10, 11...First and second needle holes, 12...Needle restriction rod, 9a...Outer end opening, 12a...Head, 13...Lever.

Claims (1)

[Scope of utility model registration request] In a gas tank, the gas tank body has a gas inlet and an outlet, and a main gas vent is opened for the gas outlet, and a closure that is rotatably operated by an operating shaft is fitted. A flow control valve made of a hollow cylinder that can freely change the width of the passage by moving forward and backward toward the gas outlet is provided in the passage leading to the gas outlet, and first and second valves are provided that communicate the hollow vertical hole and the gas outlet. A screw-type needle restriction rod, which is provided with a needle hole and which opens and closes the second needle hole, is screwed into the hollow vertical hole of the flow control valve so as to be able to move forward and backward. A flow rate adjustment device for a gas tank characterized by facing the outer end of a hollow vertical hole.