JPS60105830A - Operating device of gas appliance - Google Patents

Abstract

PURPOSE:To prevent an explosive ignition and an inadvertent failure to extinguish a flame by providing a return mechanism that operates in such a manner that a second operating member is returned from the open position to the closed position without being operated. CONSTITUTION:When the ignition operation is conducted with a first operating member 11, a return mechanism 28 is actuated by pressing operation of the first operating member 11 from the shutoff position A, and a second operating member 21 is automatically returned to the closed position A' to cause a water intake valve 22 to close as well as a valve 6 to close. In the case where the first operating member 11 is operated to be returned from the burning position C to the shutoff position A while the second operating member 21 remains in the open position C', the return mechanism 28 is also actuated to cause the water intake valve 5 and the valve 6 to close. In this manner, an explosive ignition can be prevented and an inadvertent failure to extinguish a flame can be avoided, and so, the safety is ensured.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention includes a main burner and a pilot burner, and a main gas passage that blocks the main burner, and a cutoff valve located upstream of a branch part of the reed gas passage; The present invention relates to an operating device that is applied to a gas appliance such as a gas instantaneous water heater, which is located downstream and has an on-off valve interposed therein.

Conventionally, in this type of device, a first operating member that opens a shutoff valve to ignite the pilot burner and a second operating member that opens and closes an on-off valve to ignite and extinguish the main burner are independent of each other. However, in this type, the second operating member is operated to the open position before the first operating member. A large amount of gas is released, causing an explosion and ignition.
Furthermore, even if the second operating part is in the open position, when the first operating part is returned to the normal position, the main burner and pilot burner are extinguished, so it is assumed that the first on-off valve is closed. There is an inconvenience that you may accidentally close the door and forget to close it.

In order to eliminate this inconvenience, the present invention provides that when an ignition operation or extinguishing operation is performed with the first operation member while the first and second operation members are in the open position, the second operation member is automatically moved to the closed position. The object of the present invention is to provide a device capable of returning the second operating portion from the open position to the closed position without depending on the operation of the second operating portion in the conventional device described above. The present invention is characterized in that a return mechanism is provided, and the return mechanism is operated in conjunction with all the first operating members during the operation thereof.

Next, the present invention will be explained with reference to fully illustrated embodiments.

Figure 1 shows an embodiment in which the inventive device is applied to a gas instantaneous hot water boiler, in which a pilot burner (2a) is installed in parallel on the side of a main burner (2) that heats a water heat exchanger full. Burner (2)
In the main gas passage (3) leading to the pilot burner (2aJ), there is a shutoff valve (4) located upstream of the branch of the pilot gas passage (6) that blocks the pilot burner (2aJ), and a shutoff valve (4) located downstream of the branch Water heat exchanger (1
) is interposed with an on-off valve (6) that opens in conjunction with the water governor (5) when water flows to the water governor (5).
) is provided with an ignition burner (2k) J' to which gas is supplied through an ignition valve (7) consisting of a small diameter portion formed in the valve rod (4a) and an ignition gas passage (3b). Burner (2
b) The activation of the igniter (8) facing the ignition burner (2bJ'e) transfers the ignition to the pilot burner (2aJ), and a thermoelectric current is applied to the first and second pilot burners (2a). An electromagnetic safety valve (10)'e controlled by the pair (9) was provided on the upstream side of the shutoff valve (4).

In the drawing, (IIJ indicates the first operating member that fully opens the cutoff valve (4) and ignites the pilot burner (2a), and the member aυ is the same shaft as the valve rod (4aJ) of the cutoff valve (41). It shall consist of an operating rod (11b) with a push button (11eJ) provided at the rear of the top, and a button mechanism 021 to be described later is assembled to the operating rod (11b), and the @11 operating member 0 is assembled.
1) is returned from the stop position A to the forward ignition position B, as shown in Fig. 7, and can be freely suppressed against the spring (11a). If the awn 1 is locked at the firing position O and is pushed to the locking release position of the kinshaobaen sword by another suppression operation from the firing position C, the locking at the firing position 0 will be released. I will make sure that you return to the position of Seiji #A,
Furthermore, as shown in Fig. 4, the safety valve (10) is opened for a certain period of time by passing a discharge current from the capacitor to the ignition switch (03) connected in series with the igniter (8) and the solenoid (10) of the electromagnetic safety valve. A hold switch 0ω for forcibly holding the state is provided, and each switch (131Q51 is connected to the protrusion (1
3eJ (arranged to be actuated in contact with 15aJ, and thus move the first operating member av from the stop position A to the ignition position B)
According to the pressing operation, the shutoff valve (4) is first opened at point A in Fig.
) starts to open, then press the four-point hold switch a
9 starts discharging to the solenoid (10aJ), and at point b beyond the combustion position Oi, the valve rod (lever 1G that contacts the 4th lever) ff: starts to open the electromagnetic safety valve 00), and then the second At this point, the ignition valve (7) begins to open, and the ignition switch (1:3) closes, and the igniter (81 is activated, large burner C2b) is connected to the pilot burner (2a) via the ignition switch (1:3). A great ignition is given. After this ignition, release the suppression operation and move the first operating part A;'QIJ to combustion position 0.
When the igniter (8) is turned off, the ignition valve (7) is opened and the ignition burner (2bJ) is extinguished.
Only the pilot burner (2a) burns, and the electromagnetic safety valve 00)
is forcibly kept open for a certain period of time by discharge from the capacitor (14J), during which time the thermocouple (9) is heated to a predetermined temperature, and from then on, unless a misfire occurs due to the electromotive force of the thermocouple (9), the valve will remain open. The safety valve (lω) is held open.

The push-button mechanism (121) is a mechanism (121) in which the retainer Qal, which is swingably attached to the fixed rod OD, is pushed into the id groove (20) by the force on the guide plate H attached to the operation lever (11bJ).
It is elastically inserted and locked at aJ, and the guide f
f4 (20) k % As shown in FIG.
The first stepped shape connecting each point a to d corresponding to 1'D
The fourth groove part (20F3) (20b bar 20c) is formed in a loop shape consisting of 20 parts. As the engaging element tia+ moves forward, it moves from three points to the first groove part (
When the igniter iB is released from the pressure, the engager α barrel is moved to point 0 via the second groove (20bJ) as the guide plate 0 moves backward. Law No. 1
When the operating member aυ is locked at the combustion position 0 and then released by pressing it from the combustion position 0 to the unlocking position, the cough engaging lever is connected to the third part (zocJ'). The first operating member 0υ is moved from the point d and then from the point 1d to the point a via the fourth groove (20 slopes) so that the first operating member 0υ is given a return action to the normal position A.

The opening/closing valve (6) is opened when water is flowing as described above, and therefore the second operation member circle for opening and closing it is composed of the water flow: #P (23 operation members) shown in FIG. .

The second operating member (211) is constructed in the same push-button type as the first operating member Uυ, which is equipped with push buttons (21a, 2l b) and an operating lever (2l b). As shown in FIG. 10, the track is moved from the closed position A' to the pressing end position B/+ through the pressing operation against the return spring (21o), and then to the open position a' and from the open position C'. By pressing again, the unlocking position D'
The cough water valve (24) is opened at the open position 0', and the opening/closing valve (6) is opened as the cough water valve (24) is opened.

The push-button mechanism (2) is a guide in which a fixed frame (5 of the retainer attached to 24I so as to be swingable) is attached to the operation rod (21b), similar to the push-button mechanism 021 of the first operating member (111) described above. The spring (25) has already been elastically inserted and locked into the plate (guide groove 07 on 2Gl), and the guide groove c+'0'i, as shown in FIG. 8 and FIG. members (the above-mentioned operating positions A', B of the two swords)
', 0', and D' are formed into a loop shape consisting of stepped-shaped first to fourth grooves m (27a) (27b bars 27c) (27d) connecting the dots a' to d', The second
According to the pressing operation from the operating member (2D closed position A'),
The engager (251 moves from point a' to first groove part (27a) to b'
point → 2nd@ part (moved to point 07 in the order of 27 phrases, and the second operating member (2D) is locked in the open position C'. If the engager (2ω
The second operating member (21J) is returned to the closed position A' by moving to point a' in the order of 3rd groove part (27o) → point d' → 4th groove part (27dJ).

Here, according to the present invention, a return mechanism (c) is provided that operates to return the second steering member (2υ) from the open position O' to the closed position A' without relying on the operation thereof, and the return mechanism (c) is provided. ) is interlocked with the first operating member aυ to operate it during its operation.1 To explain this in more detail, in the illustrated model, the return mechanism (28) is connected to the first operating member aυ to operate the Groove (3)
A relatively shallow return groove (27e) extending straight from point 07 to point a' is formed, and the action rod 09) with which the engager (c) is engaged is used to resist the spring (25a). Pull up the cough engager (2) to a position facing the return groove G27111J.
5) is released from the lock at point 07, and the engaging element (c) is returned to point a' via 1J (27eJ'i) to remove the second operation part (24J from fully open position 0' to closed position). In order to return to A', move the operating rod (2) to both tA'r operating member f.
lll (fixed frame 0 between 211) and the engager (25)
431 + in the left operating direction in Fig.
It is inserted and supported so as to be able to slide freely against the pressure, and is engaged with the operating rod (the cam protrusion formed in the 11th cut) of the first operating part in the bottle 07J at the left end of the first operating part. (
According to the operation III, the operating rod is moved to the left by being pushed by the cam protrusion between the normal position A and the combustion position O, and the second operation part is moved from the open position C' to the closed position described above. A return operation to position A' is provided.

In addition, the operating rod (two wings are the left and right two members (29b)
J, and both members (29h) (29
bJ is connected with a slight play through an elongated hole (29a) to absorb the difference in assembly, and a spool valve with both ends protruding out of the waterway is used as a water flow valve. , the operating force can be reduced.

Next, to explain the operation of the above-mentioned uninvented device, when using it, first operate the first operating member Qll from the normal position A to the ignition position B to connect the pilot burner (2aJ to the ignition burner (2b) ffi). The first operating member 0) is returned to the full combustion position (ffO) and the pilot burner (ZaJ is used to continuously burn the flame). (If 221 is opened and closed, the on-off valve (6) is opened and closed in conjunction with this, the main burner (2) is turned on and off, and hot water can be fully supplied as appropriate.

In this case, if the second operating member (21J) is switched to the open position C' before the ignition operation by the first operating member circle, this 11 will be in the open state when the pilot burner (2aJ) is ignited. A large amount of raw gas is released from the main burner (2) through the on-off valve (6), which causes explosion and ignition. The operation activates the return mechanism (281) as described above,
The second operating member (211) is automatically returned to the closed position A', the water flow valve (24) is closed, and the on-off valve (6) is closed, so that no explosion or ignition occurs.

Also, when the first operating member Uυ is returned to the normal position A from the combustion position 0 while the second operating member CD remains in the open position c', the return mechanism (28) is activated and The water valve (5) and the on-off valve (6) are closed to prevent forgetting to turn off the water, and the ignitability is worsened due to night air replacement when the on-off valve (6) is left open. Such inconveniences are also prevented.

The above describes an embodiment in which the present invention is applied to an all-gas instantaneous water heater. However, the present invention can be similarly applied to gas appliances such as bathtubs in which the opening/closing valve is directly opened and closed by the second operating member.

As described above, according to the present invention, a return mechanism is provided that automatically returns the second operating member for opening and closing the on-off valve that shuts off the main burner from the open position to the closed position, and the return mechanism is connected to the first operating member for ignition. The on-off valve is operated in the middle of the operation in conjunction with the ignition valve, so that even if the first operation member is used to perform the ignition operation with the second operation member in the fully open position, the on-off valve will be closed during the operation. Explosive ignition does not occur, and even when the first operating member performs a fire extinguishing operation, the on-off valve is closed in the middle of the operation, so there is no chance of forgetting to close it, resulting in safety.

[Brief explanation of drawings]

Figure NS1 is a cross-section of an example of the uninvented device - Figures 2 and 3 are cross-sections taken along the lines ■-■ and m-III of Figure 1, respectively. A circuit diagram of the safety valve, FIG. 5 is a plan view of the guide groove of the pushbutton mechanism for the first operating member) FIG. 6 is a developed cutaway view of this guide groove, and FIG. 7 is an explanation of the operation of the first operating member. FIG. 8 is a plan view of the guide groove of the pushbutton mechanism for the second operating member, and FIG.
The figure is a developed cross-sectional view of this guide groove, and Figure 10 is a line diagram explaining the operation of the second operating member. Gas passage (3a)...Pilot gas passage (4)...Shutoff valve (6)...Opening/closing valve Kicking...First operating member (2D
...Second operation part removed (c)...Returning mechanism patent applicant Two persons other than Rinnai Corporation - Figure 1 L-11a π Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A main burner and a pilot burner are provided, and a main gas passage leading to the main burner has a shutoff valve located upstream of a branch of the large-mouth gas passage leading to the pilot burner, and a shutoff valve located downstream of the branch. A gas appliance comprising an on-off valve and an on-off valve, the first operating member opening the shutoff box to ignite the cough mouth burner, and opening and closing the on-off valve to ignite the cough main burner. A second operating member for extinguishing a fire and a second operating member are provided independently from each other.1. An operating device for a gas appliance, characterized in that it is operated in conjunction with a first operating member during the operation thereof.