JPS60147023A - Push button type control device for water heater - Google Patents

Abstract

PURPOSE:To enable to perform hot water feeding operation through one-action operation of a push button, by a method wherein a control part for a gas control unit and a water valve is formed with a common push button. CONSTITUTION:A control part for a gas control unit 4 and a water valve 5 is formed with a common push button 6. Through push control of the push button 6 from a start terminal position A, the water valve 5 is opened, and simultaneously, an electromagnetic safety valve 9 and a pilot flame valve 27 are opened. Ignition is made on a pilot flame burner 3 in a rear end position B under the closed state of a normally-opening type gas valve 11, return to an intermediate position C results in opening of the normally-opening gas valve 11, ignition, which is made through transfer of a flame from the pilot flame burner 3 to a main burner 2, is effected to provide hot water feed operation. This enables provision of hot water feed operation through one-action operation of the pushed button, resulting in improvement of operability.

Description

Detailed Description of the Invention The present invention provides a water boiler comprising a gas control unit that controls the operation of a main burner and an pilot burner that heat a heat exchanger, and a water pulp that controls water flow to the heat exchanger. This invention relates to a push-button operation device for a container. □ Gas control unit (gas control unit) for conventional water heaters? There is a ignition control that operates to ignite the pilot burner, and a hot water tap control that fully opens the water valve to allow water to flow to the heat exchanger.First, the pilot burner is ignited using the ignition control. Then, when the water pressure-responsive automatic gas valve interposed in the gas passage leading to the main burner is opened by the subsequent flow of water by the hot water tap operator, the main burner is ignited by the spark from the pilot burner. In general, it is necessary to ensure that the hot water tap operation is not possible.
Also in such a water heater.

In order to improve the ease of imitation, it has been considered to configure the ignition shell and hot water tap controls with push buttons; In order to further improve the operability, it is desirable to share the ignition shell and the push button for tapping hot water so that hot water can be tapped with a single pressing operation.

However, in this case, ignition and water flow are performed at the same time 1, and when igniting the pilot burner, the main burner
There is a possibility that an explosion and ignition may occur, so it is necessary to solve this problem.

The object of the present invention is to provide a push-button operating device that satisfies such demands. In a push-button operation device for a water heater that includes a water valve that controls water flow to an exchanger, a common push button that operates the gas control unit and the water valve is provided, and the gas control unit is provided with a common push button that operates the water valve. A normally closed gas valve is interposed in the main gas passage leading to the burner and is located upstream of the branch of the main gas passage leading to the pilot burner, and a normally open gas valve is located downstream of the branch. The design is such that the water valve and the normally-closed gas valve are held open by one pressing operation of the push button, and the normally-open gas valve is held in the closed state at the end position of the push button. All features include ignition of the pilot burner and transfer ignition of the pilot burner to the king burner by opening the normally open gas valve upon release of the push button. shall be.

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

FIG. 1 shows the appearance of a water heater to which the device W of the present invention is applied,
Inside the water heater, as shown in FIG. 2, there is a heat exchanger (1),
This 1. A main burner (2) that heats the main burner (2) and a pilot burner (3) on the side thereof are provided, and a gas control that controls the operation of the main burner (2) and the pilot burner (3) as operated members. Unit (4) and the heat exchanger (1)
A water valve (5) is provided to control water flow to the water heater, and a common push button (6) for sweeping the control unit (4) and the water pulp (5) is provided on the front of the water heater. There is one set up.

The control unit (4) l/1''' (d) is interposed in the main gas passage (7) connected to the main bar (2), and a large gas passage (8) connected to the pilot burner (3). A normally closed gas valve and two electromagnetic safety valves (
9), a manual shutoff valve C11, and a normally open gas valve 01) located on the downstream side of the branch, and the shutoff valve (10).
and the normally open type gas valve 01) are assembled to a common valve rod 07J, and the first operation rod ←3 that is linked to the push button (6) is opposed to the front end of the valve rod side, and the push button (6) ) '(+-Return (6
When the rear end position BK is pressed from the starting end position iA against a), the first operating rod 03) comes into contact with the valve rod (+21) (the shutoff valve 01 opens at the 7° intermediate position C). The normally open gas valve 01) is then closed by pushing the valve n1 beyond the intermediate position C toward the end position iB, and finally the lever (IJ1f) linked to the valve rod O2 is closed. The water valve (5) shall be constructed of a spool-type valve so that the safety valve (9) is pressed open. The water valve (5) is opened to a predetermined opening degree at the intermediate position C by the pressing operation of the push button (6) from the starting end position A, and the opening of the water valve (5) is For water flow to the heat exchanger (1), a water flow detector 00 such as a water governor or a flow switch is provided in the main gas passage (7) downstream of the normally open gas valve 01). Automatic valve (17i is opened).

In addition, the first and second operating levers Q, l Qfl as shown in the second figure
The rear end r of the thin rod (6b) connected to the push button (6) (consisting integrally with the attached U-shaped frame) is not limited to this, for example, as shown in Fig. 8 or As shown in Figure 9, both operating rods are 0.
Attach one or both of the letters to the push button (6) with the swing link (1).
3a) (15a)? They may also be linked via the

In addition, the push button (6) is connected to the ignition switch 00 and the solenoid (9a) of the electromagnetic safety valve (9), which are connected in series to the igniter surface facing the pilot burner (3) (as shown in Figure 5). (hold switch button that allows the discharge current from the capacitor to flow)
The switch also performs the following operations.In detail, the switch 1) is connected to the narrow rod (6b) as shown in Figures 3 and 4.
) on each of the cam protrusions (1, 9a) (21a) K. When the push button (6) is depressed, the ignition switch is activated near its terminal position B. 09)) is opened and the firearm 08) is activated -52'1
．． In addition, the hold switch Q1) is switched to the a contact that discharges from the front side of the intermediate position PC to the solenoid (9a), and when the push button (6) returns to the intermediate position tO, which will be described later, the pilot burner is (3) A predetermined electromotive force is generated from the thermocouple (A) placed in the trench.1. The safety valve (9) is forcibly held in the open state by the discharge from the capacitor (A) until 1. and when the push button (6) returns from the intermediate position 110 to the starting position A, the hold switch al)
is switched to the B contact which charges the capacitor (A) via the solenoid (9a), and a charging current of opposite polarity to that of the thermocouple (A) is used! llll electric thermocouple)? Is the solenoid (9a) no longer energized by electric power?

The safety valve (9) was then immediately closed.

In the drawing, (a) indicates a locking mechanism provided to lock the return operation of the push button (6) from the terminal position B by the return spring (6a) at the intermediate position ( ); in this case, the locking mechanism @ However, in the illustrated embodiment, this locking mechanism is operated by a separate operator from the push button (6). 6) The pushbutton mechanism is configured such that engagement is released by pressing again from the intermediate position 0.

More specifically, as shown in FIGS. 2 and 3, the locking mechanism rod is inserted into the cam groove (A) on the cam plate (C) attached to the narrow rod (6b). It is composed of a heart cam type pushbutton mechanism in which a swingable engager (b) provided on the machine frame side is elastically inserted by a spring (26a).
The cam groove (c) shall be formed into a stepped deformed heart shape as shown in FIGS. 6 and 7, and the push button (6)
1. By pressing backward from the starting end position A. For example, by moving the engaging element (a) relative to the cam plate e fan in the opposite direction, the engaging element (a) moves to the terminal position via the groove (25a) extending forward from point a corresponding to the starting position A. By moving 5 points corresponding to B 1, and returning from the terminal position wB, 1 is a groove portion (25
b)? through the middle position #OK, move to the corresponding 0 point n,
The engagement of the engager chain with the groove wall (25C) at point 0 locks the push button (6) at the intermediate position wC1, and then the push button (6)
), the engaging element (4) is moved to a point d adjacent diagonally in front of the zero point.
When the push button (6) is released from the lock at the intermediate position O) 1, when the push button (6) is released, the engager (sha) moves into the groove () extending rearward from the point d.
25d), the push button (6) is moved to the point a side, and the push button (6) is given a return operation to the starting end position A.

Next, the overall operation of the above embodiment will be explained.
To dispense hot water, first press the push button (6) from the starting position A to the final position B. The electromagnetic safety valve (9), which is a gas valve, and the cutoff valve 01 are opened, while the normally open gas valve 01) is closed, gas is supplied only to the pilot burner (3), and the lever is ignited. Ignition is given by the operation of the 0 mark.

Next, the suppressing operation of the push button (6) is released, but at this time, the push button (6) is engaged with the locking mechanism (E) at an intermediate position C that does not cause the closing of the water valve (5) or the shutoff valve 00. Stop 11. The water valve (5) and the cutoff valve 01 are maintained in the open state IC15.
On the other hand, the normally open gas valve 01) is opened during the return operation of the push button (6) from the terminal position B to the intermediate position C, and the valve 01) and the water valve (5) are opened. By supplying gas to the main burner (2) through an automatic valve 0η which is opened in advance by water flow through the valve, a transfer ignition is provided from the pilot burner (3). Operation is obtained.

By the way, when the push button (6) returns to the intermediate position C, the pressure opening of the electromagnetic safety valve (9) is released, but the safety valve (9)
The valve is held open by the discharge from the capacitor (b) and then by the electromotive force of the thermocouple (a).

Next, when the push button (6) is pressed again from the intermediate position C, the lock by the locking mechanism is released, and the push button (6) is pressed again.
is returned to the starting position A, the water valve (5), the cutoff valve 00, and the electromagnetic safety valve (9) are closed by switching the hold switch 121'l to the b contact.n, the heat exchanger When the water flow to (1) is stopped, the main burner (2)
The pilot burner (3) is extinguished, and the hot water tapping operation is stopped.

Therefore, the hot water can be dispensed by pressing the push button (6) once, making the operation easy, and by pressing the push button (6) again to stop the hot water dispensing, the main Not only the burner (2) but also the pilot burner (3) was extinguished.I forgot to extinguish it.1.
will definitely be prevented.

In the above embodiment, a locking mechanism (to) consisting of a push-button mechanism is attached to the push button (6) to lock the return from the terminal position tB at the intermediate position 0, but the push button (6)
) may be directly returned from the terminal position B to the starting position A, and in this case, the first and second frame rods 030 are the operating members for the gas control (4) and the water valve (5).
After the first suppression operation of the push button (6) and the second operation, the east face of each operation rod 0 is connected to the shutoff valve 01.
or the water valve (5) at an operating position that does not cause the valve to close (the position when the push button is in the intermediate position in the above embodiment),
The second suppressing operation releases the locking of each operating lever (IQ), returns fI to its old position, and closes the shutoff valve 00 and water valve (5), similar to the above embodiment. operation can be obtained.

Further, in the above embodiment, the electromagnetic safety valve (9) and the cutoff valve 00 are provided as normally closed gas valves interposed in the main gas passage (7) on the upstream side of the branch part of the pilot gas passage (8). 1.
It is also possible to omit either one of them, and an embodiment in which only an electromagnetic safety valve (9) is provided as a normally closed gas valve is shown in FIG. 10 and subsequent figures.

In this case, gas leaks from the pilot burner (3) when not in use.
In order to reliably prevent this, it is desirable to provide a normally closed pilot valve in the pilot gas passage (8).In the embodiment shown in FIG. 3rd to open and close
An operating rod (A) is provided, and by pressing the push button (6) from the starting end position A, the button is pressed against the cam' portion (28a) at the tip of the third operating rod (C) at the intermediate position 0. When the push button (6) returns to the starting end position A, the pilot valve stem is closed, and in the embodiment shown in FIG.
The electromagnetic safety valve (9) is mounted on the lever 0, which is pressed to open the valve, so that the pilot valve slope opens and closes at the same timing as above due to the voice cam.
5) is interlocked with the push button (6) via the connector (1) slidably inserted into the valve lever (27a), and the connection occurs when the push button (6) is pressed from the starting end position 1iA. The valve rod (27a) is pushed through the spring 01) by the pushing of the child (1).
At the intermediate position 0 of the push button (6), the pilot valve is opened, and the E-link 04 for the spring receiver provided on the valve rod (27a) is connected to the bush 03 on the gas control unit (4) side. 1, so as to restrict the pushing movement of the pilot valve (A) when the push button (6) is pushed to the terminal position B beyond the intermediate position. The pushing stroke of the push button (6) is made smaller than that of the first part of the push button (6), thereby reducing the size of the pilot valve.

It was to so.

In addition, in order to improve the ignition performance of the pilot burner (3), an air nozzle valve that opens near the end position of the push button (6) is provided in addition to the ignition valve. A non-zipana connected to the valve may be arranged in parallel to the pilot burner (3).

In addition, in the case shown in FIG. 10, the push button (6) is set to the intermediate position 0.
] A crank cam type locking mechanism was used as the locking mechanism.

Next, to explain its operation, the starting end position A of the push button (6)
According to the suppression operation from , the water pulp (5) is opened,
At the same time, the electromagnetic safety valve (9) and the pilot valve open (n5).
, at the terminal position iB, the pilot burner (3) is ignited with the normally open gas valve 01) in the closed state, and when n1 returns to the intermediate position #0, the normally open gas valve (11) is opened. 1. When the valve is closed, the main burner (2) receives a transfer ignition from the pilot burner (3), and the hot water tap operation is obtained.1. and then press the button (
6) When returning to the starting position by another suppression operation from f intermediate position 0, the water valve (5) and the pilot valve are closed, and the automatic valve Q'? is closed by stopping the water flow. When it is closed, the main burner (2) and pilot burner (3) are extinguished (1), and hot water operation is stopped.

In addition, the electromagnetic safety valve (9) is connected to the above-mentioned hold switch al.
) by switching to the b contact shown in Figure 5.
The valve is closed simultaneously with the return of the push button (6) to the starting end position A without waiting for the cooling of the push button (6).

In this way, according to the present invention (d), the operators for the gas control unit and the water valve are configured with a common push button, and the hot water tap operation can be obtained by one pressing operation of the push button. In addition, a normally open type gas valve is provided in the main gas passage on the upstream side of the branch of the gas passage of the gas control unit, and the normally open type gas valve is installed at the end position of the push button. When the gas valve is closed, i.e., the gas supply to the main burner is cut off, the pilot burner is ignited, and when the push button is released, the normally open gas valve is opened and the main burner is ignited. Provide ignition from the burner.
This has the effect of allowing hot water tapping to be carried out safely and with good operability without causing any explosion or ignition.

[Brief explanation of the drawing]

FIG. 1 is a front view of an example 7 of a water heater fully equipped with the apparatus of the present invention, FIG. 2 is a cutaway plan view of its main parts, and FIG. 3 is a cross-sectional side view of line III-m in FIG. 2. 41st si 1 is ■-I in Figure 3
The cross-sectional view of the V-line cutting diagram is a circuit diagram of the electrical system, Figure 6 is a plan view of the cam plate that constitutes the locking mechanism of the push button, and Figure 7 is a developed cross-sectional view of the cam plate along the cam groove. , Figures 8 to 1
FIG. 2 is a cutaway plan view showing different embodiments of the device of the present invention. (1)...Heat exchanger (2)...Main burner (3)
... Pilot burner (4) ... Gas control unit (5) ... Water pulp (6) ... Push button (7) ... Main gas passage (
8)...Pilot gas passage (9)...Solenoid safety valve (normally closed gas valve) 0q...Shutoff valve (normally closed gas valve) Ql)...Normally open gas valve 01... 1st operation rod (operation member for gas control unit) 0Q... 2nd operation rod (operation member for water valve) (c)
...Latching mechanism (+71 Procedural amendment 1933 3 ++1.o Mr. Commissioner of the Japan Patent Office 1, Indication of the case, Patent Application No. 1765 of 1983 2, Name of the invention Push-button operation device for hot water drainer 3) , Relationship with the case of the person making the amendment Patent applicant Rinnai Co., Ltd. 4, Agent 5, Date of W official order 4-J (spontaneous) Date 6, Showa, Month 6, Full text of the specification to be amended 7, Amendment Amend the statement of contents to a typed version as shown in the attached document.The changes in the contents are as follows on page 6, line 1 of the statement of contents at the time of application
``This invention'' t ``This invention'', ``Shudanben'' on page 7, line 5 of Houyo t
These are the two locations that have been corrected to "shutoff valves." 91

Claims (1)

[Scope of Claims] 1. A push-button type water heater that includes a gas control unit that controls the operation of a main burner and pilot burner that heat a heat exchanger, and a water valve that controls water flow to the heat exchanger. In the operating device. A common push button for operating the waste control unit and the water pulp is provided, and a starter gas passage leading to the pilot burner is provided in the gas unit, interposed in the king gas passage leading to the king burner. A normally closed gas valve located upstream of the branch and a normally open gas valve located downstream of the branch are provided, and a single press of the push button closes the water valve and the normally closed gas valve. At the same time as holding the valve open, igniting the pilot burner with the normally open gas valve open at the end position of the push button, and opening the normally open gas valve as the push button is released. Is it possible to provide ignition from the pilot burner to the main burner by opening the valve? Features a push-button operation device for water heaters. 2. When the push button is assembled, a locking mechanism locks the return operation from the push end position to the start end position at an intermediate position that does not cause the water valve and the normally closed gas valve to close. and the water valve and the normally closed gas valve are closed by the return of the push button to the starting end position by releasing the engagement. A push-button operation device for a water heater according to item 1. 3. The push button for a water heater according to claim 2, wherein the locking mechanism "f" is constituted by a push-button mechanism that is released by pressing the push button again from an intermediate position. 4. Assemble a push-button mechanism to the operating member of the gas control unit and the operating member of the water valve that are linked to the push button, respectively, so that the first pressing operation of the push button causes each operating member to close the water valve. and the normally-closed gas valve are locked in an operating position that does not cause the valve to close, and a second pressing operation of the push button returns each operating member to its previous position, thereby closing the valve and the normally-closed gas valve. 2. A push-button operation device for a water heater according to claim 1, characterized in that said valve is closed.