KR900000927Y1 - Gas appliances of push button control device - Google Patents

Abstract

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Description

Push Button Control Device of Gas Appliance

1 is a schematic diagram of a conventional device.

Figure 2 is a cut side view of the device device embodiment.

3 is a cutaway side view of the open state of the ignition valve portion.

4 is an electrical circuit diagram thereof.

* Explanation of symbols for main parts of the drawings

2: burner unit 4: gas passage

5: electronic safety valve 12: ignition valve

17: igniter 6: shutoff valve

13 ignition push button 13b: return spring

14: extinguishing push button 21: locking mechanism

The present invention relates to a push button operating device in a gas instantaneous scrubber and other gas appliances.

Conventionally as a device of this kind. For example, according to Japanese Unexamined Patent Application Publication No. 50-6034, as shown in FIG. 1, an ignition push button a and a fire extinguishing push button b are provided, and the ignition push button a is pressed by a pressing operation. And igniting the burner unit (e) by operating the ignition operation member consisting of the igniter (c) and the electronic safety valve (d) to be operated only at the time of loading. It is known that the burner unit e is extinguished by the pressing operation of the extinguishing push button b.

In more detail, the ignition push button (a) is configured to operate the igniter (c) by switching to the contact point which opens the electronic safety valve (d) by pressing operation and at the same time opens the changeover switch (f). . The fire extinguishing push button (b) is configured to close the safety valve (d) by opening the switch (h) intervening in a circuit connecting the solenoid of the thermocouple (g) and the solenoid of the electronic safety valve (d) by its pressing operation. In either case, the member to be operated is switched between actuation and non-operation by two operations, a press operation to return to the position after the push button is pressed and a return operation to return to the position before pressing.

But. As for gas appliances. To improve gas sealing when not using gas appliances. It is preferable to install a shut-off valve to open or close an electronic safety valve in place of fire protection, but in this case, it is necessary to keep the shut-off valve open when the operation of the ignition operation member is canceled after ignition. Therefore, in order to be able to operate the shutoff valve and the ignition operation member by a common operation member, a fixing device for closing the shutoff valve. With the normal combustion position opening the shutoff valve. It is necessary to freely switch the operation member to the 3 position with the ignition position for operating the ignition operation member, but it is difficult to configure it as a push button type. In the current situation, the shut-off valve as described above is omitted and the electronic safety valve (d) is closed by opening the switch (h) by the fire extinguishing push button (b) during fire extinguishing. It is also concerned that the fire extinguishing by the fire extinguishing push button (b) becomes impossible due to the welding on the on side of (h).

SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a push button type operation device having a shutoff valve and excellent gas sealability and operability, comprising an ignition push button and a fire extinguishing push button. By operating the ignition operation member which operates only when the igniter is ignited as required by the pressing operation of the device, the burner unit is ignited, and the burner unit is extinguished by pressing the extinguishing push button. In the pushbutton type operation device of a gas appliance, a gas shutoff unit is provided with a shutoff valve which is opened and closed in conjunction with the ignition pushbutton, and returns to the position after pressing from the position before the ignition pushbutton is pressed. When pressing against spring. The locking mechanism is operated so that the shut-off valve is opened at an intermediate position close to the front of the operation start position, and the return operation from the position after pressing the ignition push button is engaged at the intermediate position. Fitting. The fire extinguishing push button is configured on the operation member of the locking mechanism, so that the operation of the locking mechanism is released by pressing the fire extinguishing push button. Next, the present invention will be described with reference to the embodiments shown in FIGS. 2 to 4.

The figure shows an embodiment in which the present device is applied to a gas instantaneous hot water dispenser, in which 1 is a heat exchanger, and 2 is a main burner 2a that heats the smoke exchanger 1, It is a burner unit which consists of a burner (2b) and an ignition burner (2c). (3) is a gas control unit. In the gas control unit 3, an electronic safety valve interposed in the gas passage 4 and manually opened and adsorbed and held in the open phase by the electromotive force of the thermocouple 5a bonded to the burner 2b ( 5) and its downstream side combine the shut-off valve 6; On the downstream side of the shut-off valve 6, an automatic valve 8 which is opened in conjunction with the hydraulic pressure-sensitive member 7 by water flow to the heat exchanger 1 is provided, and these three valves 5, 6 ( 8) The gas is supplied to the main burner 2a through 8). In addition, the ignition gas passage 9 connected to the ignition burner 2c and the ignition burner 2c connected to the burner burner 2b at the portion of the gas passage 4 between the shutoff valve 6 and the automatic valve 8. The furnace 10 was drawn out, and an ignition valve 12 made of a small diameter portion formed in the valve lever 11 of the shutoff valve 6 was installed at an upstream end of the ignition gas passage 10.

In the figure, reference numeral 13 denotes an ignition push button 14 and a fire extinguishing push button. Both pushbuttons 13 and 14 are supported by being slidably fitted with shaft levers 13a and 14a extending rearwardly to the support frame 15 prominent at the front end of the gas control unit 3, respectively. According to the pressing operation against the return spring 13b at the position before the ignition push button 13 is pressed, the shaft lever 13a contacts the valve lever 11. The shutoff valve 6 is opened in the intermediate position. Subsequently, the ignition valve 12 on the valve lever 11 is opened as shown in FIG. 3 by the pressure to the position after the press passing through the intermediate position of the ignition push button 13, and at the same time interlocked with this valve lever 11 The pressure relief valve 5 is pushed open through the lever 16. In addition, as shown in FIG. 4, the ignition switch 17, which is attached to the ignition burner 2c, is connected to the ignition switch 18 connected in series and the solenoid 5b of the electronic safety valve 5 to the condenser 19. And a discharge switch 20 for forcing the electronic safety valve 5 to open for a predetermined time by flowing a discharge current from The support frame 15 is arranged to be operated by pressing the cam projection 13c on the shaft lever 13a. When the ignition switch 18 is closed in the vicinity of the position after the ignition push button 13 is pressed, the igniter 17 is operated. The ignition burner (2c) is transferred to the upper burner (2b). The holder switch 20 is located near the front of the intermediate position. The solenoid 5b is switched to discharge, so that the electronic safety valve 5 is opened for a while until the predetermined electromotive force is generated at the thermocouple 5a when the ignition push button 13 returns to the intermediate position. In the state to be houlded.

The locking mechanism 21 is engaged at the intermediate position during the return operation from the upper side after the ignition push button 13 is pressed to the position before the pressing by the return spring 13b. More specifically, the illustrated locking mechanism 21 is provided with a hook piece (Paw1) 22 which cooperates with the cam protrusion 13c on the shaft lever 13a, and the hook piece 22 is spring 22a. To press the cam projection (13c) toward the side. During the return operation from the position after the ignition push button 13 is pressed, the hook piece 22 is engaged with the corner portion of the cam protrusion 13c so that the ignition push button 13 is caught in the intermediate position. The push button 14 is provided as an operation member of the locking mechanism 21, and the hook piece is attached to the jaw portion 14c of the shaft lever 14a by a pressing operation against the return spring 14b of the fire extinguishing push button 14. 22 pressed down. The hook piece 22 swings in the direction away from the cam projection 13c. The operation of the catching mechanism 21 is released to return to the position before the ignition push button 13 is pressed.

23 shows a lock member for preventing the pressing operation of the ignition push button 13 in the state in which the automatic valve 8 is opened.

next. Describe the overall operation of the above embodiment. When igniting, press the ignition push button (13) from the position before pressing to the position after pressing. At the same time, the shut-off valve 6 is opened and at the same time, it is pushed toward the position after the intermediate position is pressed, and the ignition valve 12 is opened and the ignition valve 12 is opened and operated only when ignition. The operation of the igniter 17 by the closing of the ignition switch 18 is given, and since a flame is moved to the upper burner 2b through the submerged burner 2c, it ignites.

After such ignition, the pressing operation of the ignition push button 13 is released, but in this case, according to the present invention, the return operation from the position after the pressing of the ignition push button 13 is interrupted by the operation of the locking mechanism 21. In position, the shutoff valve 6 remains open. During the return operation to the intermediate position, the ignition valve 12 is closed to extinguish the ignition burner 2c, and at the same time, the ignition switch 18 is opened to stop the operation of the igniter 17. Only the combustion burner 2b is shifted to the normal combustion state which continues to burn. When passing through the heat exchanger 1, it prepares for the accumulation to the main burner 2a by opening the automatic valve 8.

Also. At this time, the opening of the electromagnetic safety valve 5 is also released, but the safety valve 5 is maintained in the open state by discharge from the condenser 19 and then by electromotive force of the thermocouple 5a.

Subsequently, when the extinguishing push button 14 is pressed, the operation of the locking mechanism 21 is released, and the ignition push button 13 is returned to the position before the pressing. The shutoff valve 6 is closed to shut off the gas to the upper burner 2b, and the burner unit 2 is extinguished.

Also. In the above embodiment, the electronic safety valve 5, the ignition valve 12, and the igniter 17 are described as the operation member for ignition, but the present invention is not limited thereto.

In this way, according to the present invention. The return operation from the position after pressing the ignition push button to the position before pressing is engaged by the locking mechanism at an intermediate position, and the operation of the locking mechanism is released by pressing the fire pushing button to return to the position before pressing the ignition push button. Ignition to the burner unit by operating the ignition operation member by pressing operation from the position before pressing this ignition push button to the position after pressing, and the intermediate position by pressing release of the ignition push button. By returning to the furnace, the operation of the ignition operation member is held, and the burner unit is normally burned by keeping the shut-off valve open, and by pressing the fire extinguishing push button, the return to the position before the ignition push button is pressed. By extinguishing the burnnut unit by closing the shut-off valve with a conventional push button operating device, By the norm button operation, it has a remarkable working effect which can perform ignition and extinguishing operation similar to the gas appliance which has a manual shut-off valve.

Claims (1)

An ignition push button 13 and a fire extinguishing push button 14 are provided. By pressing the ignition push button 13, the burner unit 2 is ignited by operating the ignition operation member which operates only when the igniter 17 is ignited as needed, and the fire extinguishing push button ( The push button type operation apparatus for a gas appliance, wherein the burner unit 2 is extinguished by the pressing operation. And a shut-off valve (6) connected to the ignition push button (13) in the gas passage (4) communicated with the burner unit (2). When pressing operation against the return spring 13b from the position before pressing the said ignition push button 13 to the position after pressing. And at the same time as the shut-off valve (6) is opened at the intermediate switch near the front of the operation start position of the ignition operation member. Equipped with a catching mechanism (21) which operates so that the return operation from the position after the pressing of the ignition push button (13) is filtered at the intermediate position. The fire extinguishing push button 14 is configured on the operation member of the locking mechanism 21. Push button operation apparatus of the gas appliance, characterized in that the operation of the locking mechanism 21 is released by the pressing operation of the extinguishing push button (14).