JPH11182691A - Gas cock device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the convenience and ignition performance, and improve the safety by moving a valve stem and a main valve element in the axial direction during the press-ignition operation, opening an orifice for intermediate flame in a main flow passage and an auxiliary flow passage of a gas cock, and feeding the gas of the quantity required for the ignition. SOLUTION: A gas main flow passage 9 and a gas auxiliary flow passage 10 which are interlocked with the operation of an operation knob 4 and communicated with a gas inlet 7 and a gas outlet 8 through the movement of a valve stem 6 in the axial direction, are opened/closed. At the same time, an ignition switch 12 is pressed, and the discharge is given to a gas burner 15. When the operation knob 4 is pressed when in use, the valve stem 6 is pressed, and the gas passes through the gas inlet 7, a first opening 27 and the gas main flow passage 9. The gas passes through an orifice 27 for intermediate flame fitted to a second opening and the gas auxiliary flow passage 10, and reaches a gas outlet 8. because the gas feed during the ignition can be set to intermediate flame even when a needle shaft 2 is in the minimum throttled condition, the ignition can be easily achieved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas cock device having a needle shaft for adjusting the amount of gas supplied to a gas burner such as a household gas cooker.

[0002]

2. Description of the Related Art Conventionally, the gas amount of this type of gas cock device has been adjusted by a structure as shown in FIG. That is, the needle shaft 51 is raised and lowered while rotating, and the front end shaft portion 51a of the needle shaft 51 and the main body cylinder portion 52 are separated or approached to open and close the gas passage, thereby reducing the amount of gas supplied to the gas burner. It was configured to perform increase / decrease adjustment.

[0003] In this case, the needle shaft 51 is closed, and the gas amount is set to the minimum throttle state (the gas amount of "weak" thermal power), that is,
In FIG. 5, the front end shaft portion 51a of the needle shaft 51 is brought into contact with the main body cylindrical portion 52, and a hole 51b formed in the needle shaft 51 is formed.
When the gas is ignited while flowing through the gas burner 51 and 51c, the gas amount is insufficient, so that when the gas pressure is lowered, it may be difficult to ignite the gas burner, and it may be difficult to make a fire.

Conventionally, in order to solve such inconvenience,
It is configured as shown in FIG. That is, a return lever 54 is provided which is interlocked with the pushing operation of the operation unit 53 when the gas cock is opened and closed.

In this configuration, when the operating portion 53 is pushed to ignite the gas cock when the gas amount is in the minimum throttle state, the return lever 54 is interlocked with this operation, and the needle shaft 51 is moved upward through the needle pin 1d. Move to
The needle shaft 51 is in a state in which gas ignition can be performed more favorably than the minimum throttle state.

[0008] That is, in FIG. 5, between the front end shaft portion 1 a of the needle shaft and the main body cylinder portion 2, there is a gap (a gas amount of “strong” thermal power) in which gas necessary for good ignition can flow. For this reason, at the time of ignition, a sufficient gas flows and ignition can be easily performed, and the fire spread to the entire gas burner is improved.

[0007]

However, in the above-described conventional gas cock device, even when the user wants to cook with a certain set heating power from the beginning, for example, "weak", the ignition power is forcibly increased to "strong". Even if the ignition operation ends, the thermal power remains “strong”. Therefore, it is necessary to adjust the set heating power to "weak" again, so that the usability is not good.

[0008] In recent years, in the home gas cooker, a gas burner having an increased heating power has been desired in the market in order to provide the heating power required for Chinese cuisine and the like. Therefore, in such a device, even if the ignition operation is performed with the heat adjustment lever set to the "low" heat, the flame at the time of ignition is large in addition to the user's wishes, and in such a case, the fire is transferred to the sleeve of the user's clothes. Inconvenience may occur.

Further, when the operating portion 53 is pushed to ignite the gas cock when the gas amount is in the minimum throttle state, the return lever 54 is interlocked with this operation, and the needle shaft 5 is moved.
Since a force is applied to push the needle pin 51d inserted into the needle pin 51d in the upward direction, a disadvantage occurs in that the pushing force at the time of ignition becomes heavy.

If the pushing force is too heavy, when the user performs an ignition operation, a stroke necessary for the safety valve to be adsorbed may not be able to be ignited because the stroke cannot be pushed against the user's will. Further, since the return lever 54 rotates while being in contact with the needle pin 51d, the operational feeling is not smooth, and a bending stress is applied to the return lever 54 itself, so that the return lever 54 is liable to be easily deformed and destroyed in durability.

[0011]

In order to solve the above-mentioned problems, the present invention is to open the main flow passage and the sub flow passage of the gas cock by moving the valve shaft and the main valve body in the axial direction during the ignition pushing operation. The medium-fire orifice is connected to the gas outlet on the downstream side of the needle shaft in the main flow passage in the sub-flow passage.

According to the present invention, the gas passing through the middle fire orifice at the time of the ignition pushing operation does not pass through the needle shaft and reaches the gas outlet, so that even if the needle shaft is at the "weak" thermal power, it is necessary for ignition. It is possible to stably supply a moderate amount of medium-fired gas to the gas burner.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be embodied by adopting the constitution described in each claim. In order to facilitate the embodiment, the constitution and the operation and effect by the constitution are described below. .

According to the first aspect of the present invention, there is provided a gas cock having a gas inlet and a gas outlet, a needle shaft which can be independently operated to adjust a flow rate of gas contained in the gas cock, a gas main flow passage and a gas main passage. A valve shaft having a main valve body that opens and closes the sub flow passage, an operation unit that operates the valve shaft, and a medium fire orifice provided in the sub flow passage,
The gas cock is attached to the gas cock with the completion of the pushing operation, the first opening through which the valve shaft and the main valve body move in the axial direction by the pushing operation of the operation part, and the gas inlet and the gas main flow passage communicate with each other. A second opening in which the gas inlet and the gas sub-flow passage are blocked by a seal body;
A gas cock device provided with a gas main flow passage that constantly communicates with the gas outlet, and a gas auxiliary flow passage that communicates with the second opening and the gas outlet, and can ignite even when the needle shaft is in a minimum throttle state. .

Further, the invention according to claim 2 includes a sub-valve element and a sub-valve shaft which shut off the gas inlet and the gas sub-flow passage, wherein the sub-valve shaft is the same as the main valve shaft. A gas cock device configured at a position that is not on the axis, can ignite even when the needle shaft is in the minimum throttle state, and can provide a gas cock that has a small space in the valve axis direction of the gas cock and can be easily stored in a product.

[0016]

(Embodiment 1) Hereinafter, Embodiment 1 of the present invention will be described with reference to the drawings.

FIG. 1 is a longitudinal sectional view of a main part of a gas cock device according to a first embodiment of the present invention, and shows a state at the time of “close”.

FIG. 2 is a longitudinal sectional view of a main part of the gas cock device, also showing a state at the time of "ignition", and FIG. In FIG. 1, a gas cock 1 is linked with a needle shaft 2 for adjusting a gas supply amount by a heating power adjustment lever (not shown) on an upper surface and a push operation of an operation knob 4 provided on a front surface of an operation unit 3 to operate a gas passage. Main valve body 15 that opens and closes
Is mounted.

That is, by the axial movement of the valve shaft 16, the gas main flow passage 9 and the gas sub flow passage 10 communicating with the gas inlet 17 and the gas outlet 8 are opened and closed. Reference numeral 11 denotes a seal attached to the gas cock 1, which opens and closes the gas sub-flow passage 10 in accordance with the movement of the main valve body 15.

Reference numeral 12 denotes an ignition switch.
Pressing gives pressure. Reference numeral 13 denotes an igniter, and the ignition plug 1 is pressed to the ignition switch 12.
4 discharges to the gas burner 15.

A so-called push-push mechanism for regulating the stroke of the valve shaft 6 includes an operating shaft 16, an operating cylinder 17 and a spring 1.
8 and an operating pin 19, and the operation shaft 16 can move to the forward and backward positions against the operation shaft spring 18 while sliding with the operation cylinder 17, and the gas cock is in the "closed" state and the "open" state. ”State.

That is, the "closed" state of the gas cock corresponds to FIG.
The one end of the operation pin 19 whose both ends are bent as described above, while being locked in the fulcrum hole 17a of the operation cylinder 17,
The other end is a heart-shaped cam groove of the operation shaft 16 (not shown).
Is in a state of being locked to the first locking portion 16a provided in the first position.

The "open" state means that the other end of the operating pin 19 is in the form of a heart of the operating shaft 16 while one end of the operating pin 19 is also locked in the fulcrum hole 17a of the operating cylinder 17 as shown in FIG. It is in a state where it is locked to the second locking portion 16b provided in the cam groove.

The operation of the above configuration will be described below. In FIG. 2, when the operation knob 4 is pressed, the operation shaft 16 is pressed.
, The valve shaft 6 is pushed, and the tip of the valve shaft 6 pushes the safety valve 20 completely. At this time, the safety valve 20 and the main valve body 5 are opened.
Therefore, the gas sent by the gas conduit etc.
The gas passes through the first opening 27 and the main gas passage 15 through the gas inlet 7, the first valve seat 21, and the second valve seat 22.

Thereafter, a clearance between the front end shaft portion 2a of the needle shaft 2 and the main body tube portion 24 (FIG. 2 shows a state where the thermal power is "weak").
After the gas flow rate is adjusted by the needle shaft 2, the gas flows from the gas outlet 8 to the gas burner 15 through the nozzle 25. This nozzle 25 has a hole for setting the gas amount of the thermal power “strong”.

On the other hand, separately from the gas main flow passage 9, the gas flows through the gap between the seal body 11 attached to the gas cock 1 and the small-diameter portion 6 a of the valve shaft 6 and the second opening 26 and the gas sub-flow passage 10.
Through the medium fire orifice 27 attached to the gas outlet 8. In this case, even when the needle shaft 2 is in the minimum throttle state, the gas amount can be supplied with the gas amount of medium fire.

Next, when the ignition operation is completed by releasing the hand,
As shown in FIG. 3, since the valve shaft 6 and the operating shaft 16 are released from the pressing force, the operating shaft 1 is restored by the restoring force of the valve shaft spring 28 and the operating shaft spring 18.
6 returns to the above-described "open" position, and the valve shaft 6 also returns to the "open" position in conjunction therewith.

At this time, since the gap between the seal body 11 and the valve shaft 16 is closed by the stroke returning from the "ignition" state to the "open" state, the second opening 26 is shut off. Therefore,
The gas amount set by the needle shaft 2 is supplied to the nozzle 25, and the combustion state is continued.

That is, in the present invention, the amount of gas required at the time of ignition depends on the medium-fire orifice 2 installed in the gas sub-flow passage 10.
7, it is not necessary to provide a gap between the front end shaft portion 2a of the needle shaft 2 and the main body cylindrical portion 24 at the time of ignition as in the prior art. Therefore, it is not necessary to provide the return lever 54 as in the related art, and the problem associated therewith is eliminated as described above.

In the heating power adjustment during cooking, the needle shaft 2 is operated by operating a heating power adjustment lever (not shown) in the same manner as in the prior art, so that the front end shaft portion 2a of the needle shaft 2 and the main body cylindrical portion 24 are connected. This is done by increasing or decreasing the gap between them.

As described above, according to the first embodiment, the gas supply amount at the time of ignition can be set to medium heat even when the heating power adjustment lever is at a low heating power, that is, even when the needle shaft 2 is in the minimum throttle state. In addition, the ignition can be easily performed, and the fire spread to the entire gas burner can be improved.

(Embodiment 2) FIG. 4 is a longitudinal sectional view of a main part of a gas cock device according to Embodiment 2 of the present invention at the time of "ignition".

The difference from the first embodiment is that a sub-valve shaft 29 is provided separately from the valve shaft 6, and the sub-valve element 3 mounted on the sub-valve shaft 29 is provided.
0 opens and closes the gas auxiliary flow passage 10. The components having the same reference numerals as those in the first embodiment have the same structure, and the description will be omitted.

In FIG. 4, when the operation knob 4 is pushed, the valve shaft 6 and the sub-valve shaft 29 are simultaneously pushed through the operation shaft 16 and, as described in the first embodiment, the gas main flow passage 9 and the gas sub-flow passage 1
0 becomes “open” and “ignition” by medium fire orifice 27
State.

Next, when the ignition operation is terminated by releasing the hand, the gas sub-flow passage 10 is closed by the sub-valve 30 and only the gas main flow passage 19 is opened, so that the combustion state is continued.
Further, if the operation knob 4 is pressed again, the gas main flow passage 9 is also closed by the push-push mechanism, and the fire is extinguished.

As described above, according to the second embodiment, the total length of the valve shaft 6 can be shortened by separating the valve shaft 6 and the auxiliary valve shaft 29, so that the gas burner 3 such as a gas table and the gas cock are restricted. It can be stored in a small space.

[0037]

According to the gas cock device of the present invention as described above, the following effects can be obtained.

(1) In a push-ignition type gas cock device that is easy for the user to use, even when the heating power adjustment lever is in the "weak" heating power, that is, when the needle shaft is in the minimum throttle state, the gas at the time of ignition is the medium-fired orifice and Since an appropriate amount is supplied to the gas burner in accordance with the setting conditions of the nozzle, ignition is facilitated and the fire spread to the entire gas burner is improved.

(2) If the user wants to cook with a preset heating power from the beginning, for example, “low”, the heating power required for ignition is “medium” only at the time of ignition, and automatically set when the ignition operation is completed. The heat becomes "weak". Therefore, there is no need to adjust the heating power again after the ignition operation as in the conventional gas cock device, so that the usability is good and the cooking property is good.

(3) Even if the ignition operation is performed with the heating power adjustment lever set to the "low" heating power, the ignition power can be set to "medium" instead of "high" as in the prior art. Not even. Moreover, when the ignition operation is completed, the heating power automatically returns to "weak", so that safety is enhanced.

(4) Since it is not necessary to return the heating power adjustment lever to the fully open position via the return lever at the time of the ignition operation of the cock, the feel at the time of the ignition operation becomes smooth. In addition, since the pushing force at the time of ignition is reduced, the safety valve can be easily pushed completely, and the problem that the safety valve does not adsorb and combustion after ignition does not continue hardly occurs.

(5) Since the operation mechanism is simplified, breakage due to external force hardly occurs. Further, according to the gas cock device described in claim 2, in addition to the effect of the invention described in claim 1, the total length of the valve shaft can be shortened, so that it can be easily installed in a space in a narrow instrument such as a gas table. The gas cock device can be housed in the housing, and an inexpensive appliance with good ignition performance can be provided.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of a main part of a gas cock device according to a first embodiment of the present invention when the gas cock device is closed.

FIG. 2 is a longitudinal sectional view of a main part of the gas cock device at the time of “ignition”.

FIG. 3 is a longitudinal sectional view of a main part of the gas cock device when the gas cock device is opened.

FIG. 4 is a longitudinal sectional view of a main part of the gas cock device according to a second embodiment of the present invention at the time of “ignition”.

FIG. 5 is a longitudinal sectional view of a main part of a thermal power adjustment unit of a conventional gas cock device.

FIG. 6 is a perspective view of a main part of another conventional gas cock device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gas cock 2 Needle shaft 3 Operation part 5 Main valve body 6 Valve shaft 7 Gas inlet 8 Gas outlet 9 Gas main flow passage 10 Gas sub flow passage 11 Seal body 23 First opening 26 Second opening 27 Medium orifice 29 Secondary Valve shaft 30 Sub-valve

Claims (2)

[Claims] 1. A gas cock having a gas inlet and a gas outlet, an independently operable needle shaft for adjusting a flow rate of gas contained in the gas cock, and opening and closing of a gas main flow passage and a gas sub flow passage. A valve shaft having a main valve body;
An operation unit for operating the valve shaft, and a medium-fire orifice provided in the gas sub-flow passage, wherein the gas cock moves the valve shaft and the main valve body in the axial direction by a pressing operation of the operation unit. A first opening in which the gas inlet and the gas main flow passage are communicated with each other, and a second opening in which the gas inlet and the gas sub-flow passage are shut off by a seal attached to the gas cock upon completion of the pushing operation; A gas main flow path that is always in communication with the gas outlet, and a gas sub-flow path that connects the second opening and the gas outlet are provided. Gas cock device that can. 2. The fuel supply system according to claim 1, further comprising a sub-valve body and a sub-valve shaft for shutting off a gas inlet and a gas sub-flow passage, wherein the sub-valve shaft is arranged at a position not coaxial with the main valve shaft. Gas cock device.