JPH01118026A - Gas device - Google Patents

Abstract

PURPOSE:To enable opening and closing of a gas passage and regulation of a gas amount and to improve the use-convenience, by providing a control piece which is capable of opening and closing a gas passage through axial control and regulating a gas amount through rotational control. CONSTITUTION:A safety valve 4 to open and close a gas passage opens a gas passage with a main rod 5 pressed. A thermocouple 7 receives the heat of flame to generate a thermoelectromotive force, and the safety valve 4 is absorbed and held by means of a electromagnet to hold a gas passage. When flame is disappeared, the safety valve 4 closes the gas passage. A main valve 8 mounted to the main rod 5 opens and closes the gas passage of a cock body 1b. and closes the main valve 8 for fire extinguishment. A thermal power regulating valve 9 regulates a thermal power, and with a thermal power regulating rod 1 driven, the open hole area of the slit hole of an orifice 10 is changed. With a control piece 13 pressed in, the main rod 5 is pressed by a rotary cam 16 to open a press safety valve 4 and the main valve 8. In the case of fire extinguishment, when the control piece 13 is pressed in again and released from hands, the rotary cam 16 is rotated and the main valve 8 closes the gas passage. With the control piece 13 rotated for control, a thermal power cam 27 is rotated, and a thermal power regulating rod 11 is displaced in an axial direction.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an operating device for opening and closing a gas passage of a gas appliance and adjusting the amount of gas.

2. Description of the Related Art Conventional gas appliances have two configurations: one that rotates an operator to open and close the gas passage and adjusts the amount of gas, the other that opens and closes the gas passage by pushing in the axial direction, and the lever that opens and closes the gas passage by pushing in the axial direction. The mainstream is one that consists of two controls, one of which is operated up and down to adjust the amount of gas, and in the case of the former, there is also a structure in which the control is moved up and down by pushing it in the axial direction, but this is not the case. This simply releases the rotation lock of the operator, and does not relate to opening/closing the gas passage or adjusting the gas amount. In the latter case, the gas passage opens when the operator is pushed in, and when the operator pops out, the gas passage is closed.

Problems to be Solved by the Invention The conventional operating method of opening and closing the gas passage and adjusting the gas amount by rotating the gas passage has the problem that if the operator is turned too far in an attempt to adjust the gas quantity, the gas passage will be closed and the fire extinguishing system will be disrupted. It is necessary to restart the ignition operation, which is unfavorable in terms of usability.

In addition, a configuration in which two controls are provided, one to open and close the gas passage and the other to adjust the gas amount, requires a wide operating area, so it is difficult to use when the operating areas must be concentrated in a high density for complex products. becomes a problem.

Means for Solving the Problems In order to solve the above problems, the gas appliance of the present invention opens and closes the gas passage by operating in the axial direction with one operator,
It is constructed so that the amount of gas can be adjusted by rotating it.

Operation The gas appliance of the present invention has two operations that have different purposes: ignition/extinguishing operations by opening and closing the gas passage and operations for adjusting firepower by adjusting the gas amount, the former being an axial push operation, The latter is a rotary operation that is clearly distinguishable even though it is a single control, and it overcomes the drawback that although it is a conventional operation for adjusting firepower, turning it too much can lead to extinguishing the fire. be.

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

First, the configuration will be explained according to the order in which gas flows from the gas intake to the gas outlet. In FIGS. 1 to 3, a first valve (hereinafter referred to as a safety valve) 4 which controls the opening and closing of the gas passage of the cock body 1a opens the gas passage by pushing the main rod 5 and holds the safety valve 4. Safety valve body 6
A thermocouple 7 electrically connected to receives the heat of the flame and generates a thermoelectromotive force, and an electromagnet (not shown) configured in the safety valve body θ attracts and holds the safety valve 4 and opens a gas passage. The safety valve 4 automatically closes the gas passage when the flame disappears. A second valve (hereinafter referred to as main valve) 8 attached to the main rod 6
controls the opening and closing of the gas passage in the cock body 1b, and in particular closes the main valve 8 to extinguish the fire. The fire power adjustment valve 9 installed in the gas passage of the cock body 1b controls the fire power adjustment in combination with an orifice 10 that is attached closely to the cock body 1b. , is configured to change the opening area of a slit hole provided in a surface of the orifice 1° that is in close contact with the fire power control valve 9. As described above, the gas flowing through the gas intake port 2 of the cock body 1a passes through the safety valve 4, the main valve 8, the thermal power control valve 9, and the orifice 1o, and reaches the gas outlet 3 of the cock body 1b.

Next, the operating section for opening and closing the gas passage will be explained. In Fig. 1, the state in which the gas passage is closed, that is,
When the fire is extinguished, by pushing in the operator 13 arranged so that it is almost flush with the operating spring /L/12, the rotary cam 16 is rotated by the tip of the cam 16 connected to the tip of the shaft 14 that interlocks with the operator 13. The rotating cam 16 pushes the main rod 6 to open the safety valve 4 and the main valve 8.

When the user releases the operator 13 after waiting for the gas burner (not shown) to ignite, the Nanki operator 13 is configured to pop out beyond the surface of the operating spring/L/12 (described later).
At the same time, the shaft 14 is returned to its original position by the spring AI7. In the process of pushing in and releasing the aforementioned operator, as shown in the principle diagram of FIG. , the effect of the slope of the tip of the cam 15, the slope of the rotating cam 16, and the spring B19 and the spring C.
20, the rotary cam 16 rotates and is held at the pushed-in position from the initial position, thereby holding the main valve 8 in an open state. At this time,
The other end of the main rod 6 is configured to return to a position where the gas passage can be closed in the event that the safety valve 4 misfires. In order to further extinguish the fire, by pressing the protruding operator 13 again and releasing the hand, the rotary cam 16 rotates and returns to its original position in accordance with the principle diagram of FIG. 6 in the same manner as described above. The valve 8 is configured to close the gas passage 1.

A slide cam 21 that is interlocked with the axial movement of the operator 13 is fitted into a guide case 22 and connected to the guide case 22 via an arm 24 held by a spring D23, and via a slide shaft 26. Spring E
By pressing the operator 13 with the combination of the groove formed in the slide cam 21 and the arm 24, the slide cam 21 is activated in sequence according to the principle diagram in FIG. It is configured to be held at a predetermined position in the axial direction and to restrict the axial position of the operator 13.

Next, the gas amount adjusting device will be explained. As shown in FIG. 1, by rotating the operator 13, the slide shaft 25, shaft 14, cam 15, and guide cam 18 are rotated simultaneously, and the guide cam 18 is rotated. The thermal power adjustment cam 27, which is fitted through the cam 27, rotates at the same time.

The fire power adjustment cam 27 has a cam shape set in accordance with a required arbitrary fire power adjustment curve, such as the fire power adjustment curve in the relationship between the rotation angle of the operator and the fire power as shown in FIG. 7, for example. The fire power adjustment rod 11 is displaced in the axial direction along this cam shape, and the fire power adjustment valve 9, which is biased by the spring F28, is displaced by the same amount of displacement according to the fire power adjustment rod 11. The orifice 10 having a slit hole in the direction of displacement is mounted in a state where it is pressed tightly against the fire power adjustment valve 9 by a spring G29, and the slit hole provided in the orifice 10 is opened by the displacement of the fire power adjustment valve 9. This is a configuration in which the length of the gas passage can be changed. That is, the amount of gas corresponding to the heating power is approximately proportional to the effective area of the gas passage, and this effective area is proportional to the length of the slit hole described above. The firepower is adjusted by changing the gas passage length of the slit hole provided in the orifice according to the cam shape. For gases with different calorific values, similar thermal power adjustment curves can be obtained by changing the width of the orifice hole.

Next, when attempting to ignite in a range with low firepower, it is difficult to ignite due to the small amount of gas, so various methods have been used in the past), one method is the Paipanu gas passage that opens only when igniting. However, in this embodiment, only at the time of ignition, by pushing in the operator 13, the leaf spring 30 is pushed through the slide shaft 25, and thereby the fire power adjusting cam 2 is
7 is pushed in to increase the amount of gas.

Next, when applied to a gas stove configured with two gas burners (not shown) having ring-shaped flame ports, the gas outlet 3 provided on the cock body 1b in FIG. and 3b,
A switching pulp 32 biased by a spring H31 is installed in the gas passage leading to one gas outlet 3a, and another cam shape is formed on the firepower adjustment cam 27, thereby opening and closing the switching pulp 32. It is the composition. That is,
The switching pulp 32 is opened and closed in correspondence with a predetermined point of the arbitrarily set thermal power adjustment curve described above.

Next, in FIGS. 1 and 4, the operator is 13a.

13b and 130, a lamp 33 is mounted inside the operator 13, a microswitch A34 electrically connected to the lamp 33 is supported on the guide case 22, and the slider is mounted as shown in the principle diagram of FIG. The lamp 33 is turned on and off by the operation of the cam 21, and the lamp 33 is turned on when the operator 13 protrudes from the surface of the operation spring v12, that is, during combustion.

In addition, the microswitch B3s is for operating an ignition means (not shown), is supported by the guide case 22, is configured to be turned on and off by the operation of the slide cam 21, and is configured to be turned on and off by the operation of the slide cam 21. It is configured so that it turns on only when it is pushed in, that is, when it is ignited. Further, the micro switch C3e is for operating an instantaneous adsorption circuit (not shown), and is supported on the cock body 1b.
As shown in the principle diagram in the figure, the contact point is switched via the arm B37 by the axial movement of the rotary cam 16, and the opening and closing of the gas passage is detected. Further, the microswitch D38 operates in the same way as the previous microswitch A34, and is provided for interlocking the ventilation fan.

Effects of the Invention ■ As described above, the gas appliance of the present invention is capable of opening/closing the gas passage and adjusting the gas amount with a single operator, has a simple configuration of the operation part, can be concentrated in a narrow area, and has a gas appliance that can open and close the gas passage and adjust the gas amount with a single operator. The opening/closing operation and gas amount adjustment operation can be clearly divided into push operation and rotation operation, improving usability.

■ It is advantageous in terms of ease of use, as it can be ignited and extinguished at any position within the rotating range of the operator.

■ When in use, the controls protrude from the surface of the control panel.
When extinguishing a fire, the operator is located almost on the same plane as the operation panel, so it is obvious at a glance whether the operator is in use or extinguishing, which is advantageous in terms of safety.

■ The protruding control element is further illuminated with a lamp to make it clear whether it is in use or extinguished, and to call attention to it.

[Brief explanation of the drawing]

FIGS. 1, 2, and 3 are sectional views of the operating part and cock part of a gas appliance according to the first example of the present invention, respectively, and FIG.
6 is a bottom view of the same, FIG. 6 is a plan view of the same, FIG. 6 is a diagram of the principle of operation of the same, and FIG. 7 is a characteristic diagram showing a heating power adjustment curve with respect to the rotation angle of the operator. 13.13a, 13b, 13c...--Controller, 3
3...Lamp. Name of agent: Patent attorney Toshio Nakao and 1 other person 2nd
Figure 3

Claims (4)

[Claims] (1) A gas appliance characterized by being equipped with an operator capable of opening and closing a gas passage by operating in the axial direction and adjusting the amount of gas by rotating. (2) The gas appliance according to claim 1, wherein the gas passage can be opened and closed by axial operation at any position within the rotatable range. (3) Operation in the axial direction is a push operation, and the first push operation opens the gas passage and the operator pops out, and the next push operation returns the operator to its original position and closes the gas passage. Claim 1 characterized in that
Gas appliances listed in section. (4) The gas appliance according to claim 3, characterized in that a lamp is installed inside the operator, and when the operator pops out, the lamp is lit to illuminate the operator.