JPH0452612Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention consists of extending a movable hot water tap connected to a heat exchanger for water heating from the water heater main body, and attaching a movable hot water tap to the tip of the movable hot water tap. The present invention relates to a water heater equipped with a hot water tap equipped with a switching operation tool for switching the hot water tap state.

[Conventional technology]

Conventionally, a switch for instructing the start and stop of dispensing hot water has generally been provided in the main body of a water heater.

The switching operation tool is used to switch the hot water tap state between a straight state and a shower state.

[Problem that the invention attempts to solve]

In the above-mentioned conventional technology, the user has to reach for the water heater body every time he or she wants to start or stop dispensing hot water. As a result, operations have become complicated.

An object of the present invention is to solve the above-mentioned conventional drawbacks and provide a water heater with excellent operability.

[Means for solving problems]

In order to achieve this objective, the water heater according to the present invention is characterized in that a switch for instructing the start and stop of hot water tap is provided above the switching operation tool of the hot water tap device. [Function] Since the hot water dispenser is equipped with a switch for instructing the start and stop of hot water dispensing, the user can start or stop dispensing hot water at hand.

Furthermore, since the switch is located above the switching tool, there is less risk of accidentally touching the switch when operating the switching tool. In other words, operations on switches and switching tools are generally performed using the thumb while placing the fingers other than the thumb on the outside of the hot water tap, on the back side opposite to where the switch and switching tool are installed. However, since the switch is located above the switching tool, the base of the thumb or the like will not accidentally touch the switch when operating the switching tool in the above-described manner. Incidentally, since the operating force of the switching tool is greater than the operating force of the switch, even if the switching operating tool is accidentally touched, there is little risk of the hot water supply state being switched unnecessarily.

[Effect of idea]

The operability of the water heater can be improved because the user can start or stop dispensing hot water at his/her hand and can reduce the risk of making a mistake.

〔Example〕

Next, embodiments of the present invention will be described based on the drawings.

FIG. 1 shows the overall structure of a water heater, in which 1 is a water heating heat exchanger, 2 is a main burner, 3 is a pilot burner, and 4 is a spark plug.

A movable hot water outlet pipe 6 made of a flexible pipe is connected to the discharge passage 5 from the heat exchanger 1, and extends downward from the main body of the water heater.

A water faucet 8 and a water governor 9 are interposed in the water channel 7 to the heat exchanger 1 .

Reference numeral 6A denotes a hot water tapping device that switches the hot water tapping state between a straight state and a shower state, and the hot water tapping state is switched by switching a switching operation tool 6a attached thereto.

The gas fuel supply path 10 for the burners 2 and 3 includes a safety valve 11 as a fuel valve, respectively.
A main valve 12, a hydraulically responsive valve 13, and a gas governor 14 are interposed in this order from the upstream side.

The safety valve 11 includes a closing biasing spring and an electromagnetic coil 11B that maintains the valve open state against the spring.

A thermocouple 15 is provided that generates an electromotive force through heating by the pilot burner 3, and a thermocouple circuit 16 is provided that applies the electromotive force of the thermocouple 15 to the electromagnetic coil 11B as power for keeping the safety valve open. Therefore, when the pilot burner 3 is in a proper combustion state, the electromotive force of the thermocouple 15 holds the safety valve 11 in an open state, which prevents the pilot burner 3 from unexpectedly going out or causing poor combustion. In some cases, the safety valve 11 is configured to be automatically closed by the closing biasing force of a spring as the electromotive force of the thermocouple 15 decreases.

The water pressure responsive valve 13 is linked to the water governor 9 so as to open only when the water flow to the heat exchanger 1 is appropriate.

Regarding the valve opening operation configuration for the water faucet 8, safety valve 11, and main valve 12, the water supply A mechanical interlocking operation mechanism 17 that transmits the starting operation force to the opening operating tool of the faucet 8, the opening operating tool of the safety valve 11, and the opening operating tool of the main valve 12 is installed in the main body of the water heater. At the same time, an electric motor 18 applies driving rotational force to the linked operation mechanism 17 as a hot water supply start operation force.
It is also installed inside the main body of the water heater.

A starting switch 19 for the electric motor 18 is attached to the hot water tap 6A installed at the tip of the movable hot water tapping pipe 6, and the starting switch 19
9 is also used as a switch for starting the spark plug.

In other words, when you turn on the start switch 19,
The driving force of the motor 18 is transmitted to the opening operating tools of the faucet 8, the safety valve 11, and the main valve 12 through the mechanical linkage operation mechanism 17, and the driving force of the faucet 8, the safety valve 11, and the main valve 12 The valve 12 opens at a predetermined linkage timing. Further, as the valve opens, the ignition plug 4 is activated for a set time, the pilot burner 3 and the main burner 2 are ignited, and hot water supply is started.

The electric motor 18 and start switch 19 are
The electric motor 18 is electrically linked so that the first push of the push button type start switch 19 drives the electric motor 18 in the forward direction, and the second push of the switch drives the electric motor 18 in the reverse direction. After the first push operation, press 2 to stop hot water supply.
When the push operation is performed for the second time, the faucet 8 and the main valve 12 are closed by the reverse drive of the motor 18, and the safety valve 11 is closed by extinguishing the pilot burner 3 accordingly.

In other words, the start switch 19 is provided as a manual operating tool that gives an opening/closing operation command to the motor 18 for opening/closing the valves.

To explain in more detail the specific structure of the valve opening operation configuration, as shown in FIGS. 2 to 4, the safety valve 11 and the main valve 12 are opened by means of a lever mechanism 20 by a pushing operation. A first push rod 11C that closes the valve body 11D of the T-valve 11 and opens against the biasing spring 11A, and a second push rod 12A that similarly opens the valve body 12B of the main valve 12 by a pushing operation are provided.
1C is biased toward the projecting side by a first spring 21, and the second push rod 12A is biased toward the projecting side by a second spring 22 which also functions as a spring for biasing the main valve 12 to close.

On the other hand, a rotary operation shaft 8 which is an operating tool for opening the faucet 8
A first gear 23 is attached to A.

Then, the first push rod 11C and the second
A rotary body 25 formed with first and second cams 24a and 24b that act to push the push rod 12A separately, and a second gear 26 that meshes with the first gear 23 are connected to an electric motor as a mechanical linkage operation mechanism 17. It is attached to the drive shaft 18A of No. 18, and is configured to operate the faucet 8, safety valve 11, and main valve 12 in the following order (a) to (d).

In addition, 27 in the figure is a first limit switch for automatically stopping the motor 18 when the rotating body 25 rotates forward to a preset normal rotation stop phase, and 28 is a first limit switch when the rotating body 25 rotates normally to a preset normal rotation stop phase. This is a second limit switch for automatically stopping the motor 18 when the motor 18 rotates in reverse to the reverse rotation stop phase.

(a) When the motor 18 starts rotating forward by the first ON operation of the start switch 19, the faucet 8 is rotated by the interlocking rotation of the second gear 26 and the first gear 23.
At the same time as the opening operation is started, as the rotating body 25 rotates as shown in FIG. 4A to FIG. 4B,
The first and second cams 24a and 24b push against the first and second push rods 11C and 12A, and the safety valve 11 and the main valve 12 are sequentially opened.

(b) When the forward rotation of the rotating body 15 progresses to the state shown in FIG. However, at this point, ignition of the pilot burner 3 has been completed, and the safety valve 11 is held open by the activation force of the thermocouple 15.

If the pilot burner 3 is ignited by mistake, the safety valve 11 is opened by the biasing force of the closing biasing spring 11A as the first push rod 11C returns.

(c) The rotating body 25 rotates to the normal rotation stop phase and the first
When the limit switch 27 is operated, the motor 18
In the state where the main valve 12 is automatically stopped, the pushing action of the second cam 24b against the second push rod 12A is continuously maintained, thereby maintaining the main valve 12 in the open state.
On the other hand, the faucet 8 is fully open.

In other words, the rated hot water supply operation is continued in this state. Furthermore, since the first push rod 11C has returned to the protruding side, the closed state of the safety valve 11 is allowed when the engine goes out or when poor combustion occurs.

(d) Start switch 19-2 as hot water supply stop operation
When the motor 18 starts to drive in the reverse direction from the normal rotation stop phase due to the second ON operation, the closing operation of the water faucet 8 is started in the reverse operation to the above-mentioned operation, and as the rotating body 25 rotates in the reverse direction, the second cam 24b is the second
The main valve 12 is separated from the push rod 12A and closed by the biasing force of the second spring 22.

Then, as the burners 2 and 3 are extinguished, the safety valve 11 closes, and the rotating body 2
5 rotates in the reverse direction to the reverse rotation stop phase and the motor 18 is automatically stopped by the second limit switch 28 (the state shown in FIG. 4A), the water faucet 8, main valve 12, and safety valve 11 are Valve closing is complete.

In addition, during the reverse rotation of the rotating body 25, the first cam 24a is moved against the first push rod 11C.
Although there is a temporary pushing action, there is no particular problem because the main valve 12 closes immediately after that.

As shown in FIG. 5, a resin covering material 29 is applied to the movable hot water outlet pipe 6 extending from the main body of the water heater.
The insulation of the sheathing material 29 prevents burns, and the operation electric wire 30 that runs between the water heater body and the start switch 19 at the tip of the movable hot water tap is connected between the sheathing material 29 and the movable hot water tap. 6, and the sheathing material 29 also serves as a cover for the operating wire 30.

Furthermore, by covering the push-button type start switch 19 attached to the hot water tap 6A with a rubber cap 31, and operating the start switch 19 by pressing from outside the rubber cap 31,
The starting switch 19 is designed to be waterproof.

In the water heater configured as described above, a water faucet 32 separate from the faucet 8 that is opened and closed by the electric motor 18 is additionally installed on the movable hot water tap 6 or the hot water tap 6A, and the water heater main body is During hot water supply operation when the side faucet 8, safety valve 11, and main valve 12 are open, the hot water supply may be manually turned on and off by manually opening and closing the faucet 32.

In that case, when the separate faucet 32 is closed,
Accompanying this, the hydraulic response valve 13 is operated to close, only the main burner 12 is extinguished, and hot water supply is interrupted.
Further, when the separate water faucet 32 is opened again, the hydraulic response valve 13 is operated to open accordingly, the main burner 12 is re-ignited by the pilot burner 3, and hot water supply is resumed.

[Another example]

Next, another embodiment of the main body will be described.

The drive device 18 that opens and closes the water faucet 8 and the fuel valves 11 and 12, for example,
It may also be an electromagnetic solenoid attached to each of the fuel valves 11 and 12, and various types of drive devices can be applied.

[Brief explanation of the drawing]

1 to 5 show embodiments of the present invention,
Figure 1 is an overall structural diagram, Figure 2 is a partially cutaway side view of the valve opening operation structure, Figure 3 is a plan view of the valve opening operation structure,
FIGS. 4A, 4B, and 4C are views showing the operating state of the valve opening operation structure, and FIG. 5 is a partially cutaway enlarged view of the tip of the movable hot water tap. 1... Heat exchanger for water heating, 6... Movable hot water tap,
6A... Hot water tap, 6a... Switching operation tool, 19...
Switch.

Claims (1)

[Claim for Utility Model Registration] A movable hot water tap 6 connected to the water heating heat exchanger 1 is extended from the main body of the water heater, and a switching operation device for switching the hot water tap state is installed at the tip of the movable hot water tap 6. The water heater is equipped with a hot water tap 6A with a tap 6a attached thereto, and a switch 19 for instructing to start and stop hot water tap is provided above the switching operation tool 6a of the hot water tap 6A.
Water heater attached.