JPH0147686B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gas tank used in household gas appliances, etc., and an object of the present invention is to prevent the pressure of gas ejected from a large-flow gas passage hole of a gas tank body from decreasing.

An embodiment of the present invention will be described below with reference to the drawings.

When the appliance is not in use, as shown in the closed state diagram in Figure 2a, that is, when the appliance is used from a gas-stopped state, the knob 1 in Figure 1 is turned to the fully open state diagram in Figure 2b. Suppose we perform a left rotation as shown in . The movement at that time will be explained using FIGS. 1 and 2. Since it is a push-and-turn operation, if you push the knob 1 now, the shaft 2 fitted to the knob 1 will first compress the shaft return spring 3 and at the same time push the return plate 5 through the E-ring provided on the shaft 2. Pushed down for 31. Then, the return plate return spring 6 is compressed. At the tip of the shaft 2, there is a long shaft 16 that is loose with the shaft, and is pushed down at the same time.
You become addicted to it. At this time, shaft 2
The tip pushes down a pilot valve 17 provided inside the closure 24. Reference numeral 19 is a spring provided in the pilot valve 17 for opening and closing the ignition gas. This state is the same as the closed state in FIG. 2a, with the gas circuit not yet open. Next, when the knob 1 is turned all the way to the left, the closure 24 rotates and gas passes through the gas inlet hole 22 of the lid body 8 and enters the closure 24 from the gas intake port 23 of the closure.

At this time, since it is rotated to the left while pushing, the tip of the pilot valve 17 is pushed down by the tip of the shaft 2, and the ignition gas passes through the gap between the closure 24 and the pilot valve 17 and is released from the pilot gas hole 10 of the cock body 8. be done. Since it is fully rotated to the left, the state is fully open as shown in Figure 2b, and the large flow gas passage hole 33 in Figure 1, which is provided in a part of the closure 24, is as shown in Figure 6. It is located at a position corresponding to the large flow rate gas passage hole 25 of the small body 8 shown. At this time, the gas flows through the large-flow gas passage hole 33 and the cavity 2 in the axial direction of the closure 24.
6, hits a separation wall 29 from the main gas passage 30 provided at the tip of the closure, changes the flow, and exits from two small flow rate gas passage holes 28. Kotsuku body 8
The gas coming out from each hole in the orifice packing 14
A large amount of gas comes out from the notch 14c shown in FIG. 5, and a small amount of gas comes out from the elongated hole 14a. Furthermore, a large flow rate comes out from the notch 13c of the orifice 13 in FIG. 4 located at the upper part of the orifice packing 14, and a small flow rate comes out from the gas passage hole 13a.

Moreover, a large flow rate comes out from the notch 12c of the orifice holder 12 shown in FIG. 12D and is guided to the main gas passage 30. The main gas passage leads to the final gas passing nozzle 15. The maximum gas flow rate, ie, strong caloric flow rate regulation, is regulated by the nozzle 15.

When the knob 1 is rotated to the left and then released, the ignition gas is pulled up by the force of the pilot valve spring 19 provided on the pilot valve 17, and the O-ring 21 attached to the pilot valve is pressed against the closure 24. Then, the supply of ignition gas to the pilot gas hole 10 is cut off. The O-ring 20 is for preventing gas leakage to the outside. In this state, the shaft 2 is pulled up to its original state by the force of the shaft return spring 3. Further, a return plate 5 (FIG. 12) for providing a sense of moderation in gas flow rate switching is pressed by a return plate return spring 6 against the wavy protrusion 4b of the shaft receiving plate 4 (FIG. 11).

Next, in order to switch the gas flow rate to a medium calorie level, turn knob 2 to the right to bring it into the halfway open state shown in Figure 2c. Then, the return plate 5, which is loosely engaged with the shaft 2, rotates around the groove-free part of the shaft receiving plate 4, with a gap equal to the height h of the protrusion of the return plate, as shown in Fig. 13. do. At this time, the return plate 5 is constantly pressed against the receiving plate 4 by the force of the return plate return spring 6. As the rotation continues, the protrusion 5a of the return plate 5 enters the concave slot 4c of the receiving plate.
When the return plate comes, the force of the return plate return spring 6 causes it to fall into the slot 4c of the receiving plate. As shown in FIGS. 13 and 14, the shape of the protrusion 5a of the return plate 5 is such that it is easy to slip when the device is rotated to the left when the device is used for the first time, and it is slippery in the hole when it is rotated to the right when adjusting the calorie. It has a convex shape to make it easier to fall into. Because of this shape, when the protrusion comes into the hole, it will fit straight into the hole and it will be difficult for the protrusion 5a to pass through the hole.

Furthermore, in order to improve the quality of the sound that clicks when falling, a gap S is provided between the surfaces of the receiving plate 4 and the return plate 5, as shown in Fig. 14, to prevent the sound from being absorbed by the receiving plate and the return plate. It is set as. As a result, the return plate protrusion 5a can fit into the groove 4c of the receiving plate 4 accurately without wobbling, and at the same time, high-quality sound can be obtained. In this state, the gas flow is such that the closure 24 is in the intermediate state shown in FIG. 2c. The large-flow gas passage hole 33 of the closure 24 is offset from the large-flow gas passage hole 25 of the small body by an angle of _x1 shown in the receiving plate 4 of FIG. 11, and the large-flow gas passages 33 and 25 are in a closed state. It is becoming. On the other hand, the middle flow rate gas passage 34 of the closure 24 matches the middle flow rate gas passage hole 27 of the bottom body. The gas is then discharged from the regulated medium flow rate gas passage hole 13b of the orifice plate 13 shown in FIG. Even at this time, the small flow rate gas passage is always discharged from the regulated small flow rate gas passage hole 13a of the orifice plate 13 through the axial cavity 26 of the closure 24, and the two gas flows are as follows. It passes through the gas passage holes 12a and 12b, which are larger than the gas passage holes 13a and 13b of the orifice plate 13 provided on the orifice holder 12 shown in FIG.
The main gas passage 30 leads to the nozzle 15. The gas passage hole 23 on the inlet side of the closure is cut into an elongated hole and is positioned in the center-open state shown in FIG. 2.

In FIG. 8, the gas ejected from the large-flow gas passage hole 25 of the stove body enters the main gas passage cavity 36 of the stove pilot body 35. The main gas passage cavity 36 has a sufficiently deep internal volume at the part facing the large-flow gas passage hole 25, and is rounded at the top 37 of the depth to accommodate the pressure of the ejected gas. Prevents deterioration and changes the direction of gas flow. A sloped surface is provided so that the internal volume becomes gradually narrower as the gas flows, thereby preventing a pressure drop below the gas flow.

38 is an ignition nozzle mounting hole, and 39 is a stove pilot body pilot gas passage corresponding to the pilot gas passage 10 of the stove body.

Next, a description will be given of when the gas flow rate is switched to a small flow rate. When the knob 1 is turned further to the right from the center-open state, the return plate 5 is moved from the center-opening hole 4c of the receiving plate to the center-opening hole 4a.
And so on. The rotation angle is _x2 . The movement at that time is the same as that described in the middle open state. The movement of the closing member 24 is designed so that when it rotates by an angle x ₂ as shown in the slightly open state in FIG. 2, the inlet area becomes approximately 1/2 of the size of the gas inlet hole of the gas inlet hole in the gas inlet body. This is because the calories of a small flow rate are about 1/4 to 1/5 of the calories of a full flow rate, that is, a strong flow rate.
Closer gas intake port 23 and body gas inlet hole 22
A sufficient flow rate can be obtained if the area relationship is increased by 30 to 40%, including variations, from the above 1/4 to 1/5. Since the small flow rate is always provided as a minimum bypass circuit when fully open and when the medium is open, as can be seen in the slightly open state in FIG. 34 is deviated by an angle of (x ₁ + x ₂ ), so it is in a closed state, and the regulated gas of the orifice plate 13 passes through the small gas passage hole 28 of the small body from the cavity 26 in the axial direction of the closure. The gas passes from 12D of the orifice holder 12 to the main gas passage 30 via the small gas passage hole 13a.

Note that the main burner of a stove and a grill differs in shape, and the pilot burner is also different accordingly, so the pilot body 35 for stoves shown in FIG. The pilot body 9 for grilling shown in the figure is replaced with the cooking body 8 so that it can be used for both grilling and stove cooking.

In this way, in the present invention, since the pilot body is attached to the main body of the main body so as to cover the large-flow gas passage hole of the main body, it is easy to form a main gas passage cavity in the pilot body that communicates with the large-flow gas passage hole. Become. Furthermore, the main gas passage cavity has the deepest surface facing the large-flow gas passage hole, a curved surface, and an internal volume that gradually becomes shallower along the gas flow direction. The pressure drop of the gas ejected from the passage hole is reduced, and a stable gas supply is therefore possible.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a gas flow rate switching pot in an embodiment of the present invention, FIGS. The figure is a perspective view of the orifice holder.
Figure 4 is an external perspective view of the orifice plate, Figure 5
The figure is a perspective view of the orifice gasket, Figure 6 is a plan view from the top of the cooktop body, Figure 7 is a perspective view of the ignition pilot body for stoves, Figure 8 is a sectional view of the ignition pilot body for stoves, and Figure 8 is a cross-sectional view of the ignition pilot body for stoves. 9
10 is a sectional view of the pilot body when used for grilling, FIG. 11 is an external perspective view of the receiving plate, and FIG. 12 is an external perspective view of the return plate. 13th
14 are cross-sectional views of the receiving plate and the return plate. 2...Shaft, 8...Kotoku body, 10...
...Pilot gas hole, 12D...Gas passage hole, 1
4... Orifice seal, 24... Closure, 28
...Small flow rate gas passage hole, 33...Large flow rate gas passage hole, 30...Main gas passage.

Claims (1)

[Claims] 1 A pilot body main body having a plurality of main gas passages and a pilot body attached to this main body are separately provided, and the pilot body is provided with a pilot gas passage and a main gas passage cavity communicating with the main gas passage. An ignition nozzle can be attached to a part of the pilot gas passage, and the inner volume of the main gas passage cavity is made deep at the part facing the large-flow gas passage hole provided in the small body, and the inner volume is made deep at the deepest part. A gas tank with a curved surface whose internal volume gradually decreases along the direction of gas flow.