JPH028229B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an operating device for a bathtub with a water heater, and in particular, an operating device for a bathtub with a water heater, in particular, an operating device for a bathtub with a water heater of a type in which the combustion section of the water heater and the combustion section of the bathtub are installed separately in the body of the bathtub. This invention relates to an operating device for a bathtub.

Conventionally, this type of appliance has a structure in which a main burner for bathing and a main burner for boiling water are provided in close proximity to each other. In this case, the flame is transferred from one pilot burner to the two main burners, and the main gas circuit to the main burner for water heating is opened and closed by a hydraulically responsive gas valve, so it can be operated by rotating the valve. In the case of the type that is operated, the position rotated 90 degrees from the stop position is the water heater usage position A with the pilot ignition and the main valve open, and the position rotated further 90 degrees from this point is the position A where the bath valve is opened. The bath is used in position B.

In this case, since there is only one pilot burner, the thermocouple pilot safety valve functions as a main valve, and the safety of the two combustion sections is guaranteed by the ignition operation.

As the thermocouple pilot safety valve, a solenoid valve is employed, and the solenoid valve is operated by the thermoelectromotive force generated by the thermocouple heated by the pilot burner. The safety setting operation of the pilot flame safety valve, which is composed of a solenoid valve, is performed by forcibly pushing in the lift valve built into the pilot flame safety valve for a certain period of time and keeping it in an open state. This is accomplished by waiting for power to be generated and then releasing the pushing force applied to the lift valve.

In this device, when the pilot burner is extinguished due to a gust of wind, etc., the thermoelectromotive force of the thermocouple disappears, and this is used to close the pilot safety valve consisting of the solenoid valve. The gas circuit is completely shut off, thereby preventing dangers such as gas leaks.

However, in a type where the main burner for boiling water and the main burner for bathing are located separately, each of these main burners is associated with a pilot burner, and each of the main burners is used only separately, the above-mentioned problem arises. If an attempt was made to adopt this type of pilot flame safety device, there was a problem in that two pilot flame safety valves of the same configuration, one for the bath and one for the water heater, would be required, increasing the number of required parts.

The present invention has been made in view of these points,
``An operating device used in a bathtub with a water heater that is equipped with a pilot burner that corresponds to each of the two main burners for bath and water boiling, and a thermocouple that is heated separately by these various burners, An operating device equipped with an electromagnetic pilot safety valve that maintains the gas circuits to each of the main burners and pilot burners in an open state by the electromotive force of the thermocouple, which has two valves for bathing and water boiling. To provide safety measures when reheating a bath and boiling water by simply using a single pilot flame safety valve without using two pilot flame safety valves, thereby preventing an increase in the number of required parts. The task is to

The technical means of the present invention for solving the above problems is as follows: ``A pilot safety valve is disposed in the gas flow path that is upstream of each main burner and pilot burner and formed in the main body of the device, and The first and second pilot valves 4 and 5 are inserted between the safety valve and each type of fire burner, dividing the rotation range of the operating shaft into two, and supplying gas to the pilot burner for boiling water in the first rotation range. First thing to do
While opening the pilot valve 4,
In the second rotation range, a second pilot valve 5 that supplies gas to the bath pilot burner and a second main valve 7 that opens after the pilot valve 5 and supplies gas to the bath main burner are opened. A cam body is rotatably inserted into the operating shaft for rotational operation, and a return rotational force toward the initial position is applied to the cam body by a spring, and these operating shafts and the cam body are connected to the former. The cam body is coupled via a clutch device that is released by the return rotational force applied, and the cam slope of the cam body is fitted onto the operating shaft.The tip of the valve shaft of the lift valve type pilot flame safety valve, which is in the closed state at the initial position, is attached to the cam slope of the cam body that is inserted onto the operating shaft. This means that the object was brought into contact with the

The above technical means works as follows.

Since the operating shaft and the cam body rotatably attached to the operating shaft are connected via a clutch device, the operating shaft can be moved from its initial position to the first rotation range assigned to use the water boiling function. When rotated to open,
The clutch device operates, causing the operating shaft and the cam body to rotate together.

When the cam body rotates, the lift valve type pilot safety valve, which is brought into contact with the cam slope and is biased in the closed state at the initial position, is pushed by the cam slope and opened. That is, the pilot safety valves located upstream of the main burner for boiling water and the corresponding pilot burners are opened, and conditions are established for gas supply to each of the burners.

On the other hand, when the operating shaft is rotated to the first rotation range,
The first pilot valve 4 for supplying gas to the pilot burner for boiling water is opened, and gas is supplied to the pilot burner for boiling water via the pilot safety valve which is in the open state, so that it is combusted. start. and,
When the pilot burner starts to burn, the electromotive force of the thermocouple heated thereby causes the solenoid-type pilot safety valve to be held open.

Next, the clutch device that connects the operating shaft and the cam body inserted therewith is brought into a released state by the return rotational force applied to the operating shaft. Therefore, when a return rotational force is applied to the operating shaft in the above state in which the pilot safety valve is held in the open state, the cam body, which is energized by the return rotational force in the initial direction, will be moved away from the operating shaft. It will return to the initial position while rotating independently.

As a result, the main burner for water boiling becomes ready for use, and when gas starts to be supplied to the main burner for water boiling by opening the hot water faucet in this state, the main burner has the above-mentioned ignited species. The flame transfers from the fire burner and begins to burn.

Now, in the above state where the water boiling function is used, if each burner is extinguished due to a gust of wind, etc., the valve will remain open only when the pilot burner is burning. The pilot safety valve returns to the closed state, and the gas circuit to the main water heating burner and the pilot burner is cut off, ensuring a safe state.

Next, we will describe how to reheat the bath.

When the operating shaft, which has been rotated to the final part of the first rotation range, is further rotated toward the second rotation range, the operating shaft and the cam body rotatably attached to it will be moved as described above. Similarly, they are connected by a clutch body and rotated together, and the pilot safety valve is forcibly opened in the same manner as above.

On the other hand, when the operating shaft is rotated to the second rotation range,
Since the second pilot valve 5 that supplies gas to the bath pilot burner is opened, it operates in the same way as when the water boiling function is used, and the bath pilot burner burns, and the pilot safety valve stops the combustion. The valve is maintained in the open state by the electromotive force of the thermocouple heated by the pilot burner. As a result, the conditions for the main bath burner to be used are established, and if the operation shaft is rotated further in this state to reheat the main burner, the main burner for the bath will be heated from the pilot burner that is in the ignited state. This will catch fire and cause it to burn.

Then, in this reheating state, when each burner is extinguished by being exposed to a gust of wind, etc., the pilot flame safety valve closes in the same manner as when using the water boiling function described above, and a safe state is ensured.

As described above, according to the technical means of the present invention,
Safety measures can be taken during reheating and boiling water by simply using a single pilot safety valve, and there is no need to provide separate pilot safety valves for these baths and for boiling water.

The present invention has the following unique effects.

Since safety measures can be taken when reheating a bath and boiling water with just a single pilot flame safety valve instead of using two pilot flame safety valves for the bath and water boiler, the need for a bath kettle with a water heater is reduced accordingly. The number of parts can be kept small.

Since the operation for using either the water heater or the bathtub requires rotation in the same direction, a conventional remote control device using a remote control wire device can be used as is.

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

First, the valve device 1 is configured to be operable by one operating shaft, and includes a main valve 2 that functions as a safety valve, an auxiliary valve 3 provided downstream thereof,
A first pilot valve 4 for boiling water, a second pilot valve 5 for bathing, and a first main valve 6 for boiling water and a second main valve 7 for bathing provided on the downstream side thereof. There is.

The valve device is connected to each burner, and a main gas circuit 8 and pilot circuits 9, 10 are connected downstream of the main valve 2.
Furthermore, on the downstream side of the auxiliary valve 3, there is a gas circuit from the first main valve 6 to the first main burner 11 for heating water, and a gas circuit from the second main valve 7 to the second main burner 12 for bathing. Further, from the first pilot valve 4 to the first pilot burner 13 provided near the first main burner 11, from the second pilot valve 5 to the other second pilot burner 14, respectively. Gas connection.

The first main burner corresponds to a heat exchanger for boiling water, and a first thermocouple 15 and a first spark plug 16 are located near the first pilot burner 13. On the other hand, the second main burner 12 corresponds to a heat exchanger for boiling water. In the vicinity of the second pilot burner 14, which corresponds to the exchanger and is located close to it, there is a second
A thermocouple 17 and a second spark plug 18 are provided, respectively. (Fig. 2) The first and second thermocouples are connected in parallel with a series circuit of an excitation coil 19 and a changeover switch 20 for attracting and holding the main valve 2 in an open state, and this changeover switch is connected to a valve device described later. Directly or indirectly linked to the first operating axis.

Further, the electric circuits to the first and second spark plugs 16 and 18 are connected to a common igniter 21, and an ignition switch 22 on the input side is linked directly or indirectly to the operating shaft. (Fig. 3) Next, the structure of the valve device 1 will be explained in the fourth section.
5, a rotatable operating shaft 24 is provided within the valve body 23, and its operating portion protrudes from the valve main body to the outside, and each valve is provided on the operating shaft 24. It is designed to be opened and closed by a pair with a cam part.

First, the main valve 2 associated with the excitation coil 19 is connected to the first
In conjunction with the first cam portion 27 of the cam cylinder 26, the valve shaft 28 is pushed in and the valve is opened by rotating the cam cylinder by a certain angle or more. And in this example,
The first cam cylinder 26 corresponds to the cam body described in the technical means section. The clutch device 25
has a structure as shown in FIG. 6, and has a dish-shaped concave portion 2 at the top of a first cam cylinder 26 that is rotatably paired with the operating shaft 24.
9 and a spring spring 30 for return rotation is interposed between the fixed part, a rotatable rotating plate 31 is provided in the recessed part coaxially with the first cam cylinder, and further above it A driving plate 33 having a notch 32 and rotating integrally with the operating shaft 24 is stacked, and a swinging pawl 34 pivotably supported at an appropriate position on the rotating plate 31 is positioned within the notch 32, and the other , a first protrusion 35 and a second protrusion 36 are provided protrudingly on the inner wall of the recessed part 29, and the interval between these is set at 90 degrees, and the first cam cylinder 2
6 has a rotation angle of about 90 degrees due to the pairing part with the fixed part.

A second cam portion 37 is provided on the opposite side of the first cam portion 27 in the first cam cylinder, and this second cam portion 37
is a sliding rod 38 that is freely retractable on the opposite side of the main valve 2.
The sliding rod passes through the valve body 23 in an airtight manner and is interlocked with an ignition switch 22 provided on the valve body.

The first pilot valve 4 and the second pilot valve 5 are provided at positions orthogonal to the original valve, and their positions in the axial direction are shifted. 40, the valve shaft of the first pilot valve 4 is mated with a third cam portion 41 provided on the operating shaft 24, and that of the second pilot valve 5 is mated with a fourth cam portion 42, respectively. . The long holes 39 and 40 are cut over a range of 90 degrees or more to prevent the valve shaft of the pilot valve from becoming an obstacle to the rotation of the first cam cylinder 26.

Next, below the first cam barrel 26 is a second cam barrel 4.
3 is provided such that it can be raised and lowered, and is mated between it and a fixed part, and the contact surfaces of these first and second cam barrels are mated with each other to allow forward rotation of the first cam barrel 26 (opening of the operating shaft). The second cam cylinder is pushed in by the rotation (rotation in the rotational direction), and the auxiliary valve 3, which moves up and down integrally with the second cam cylinder, faces the valve seat 44 below and is attached to the operating shaft 24. Fits on the outside and slides airtight.

A cam chamber 46 accommodating a third cam body 45 is provided in the lower part of the valve body 23 and communicates with the opposing valve port 47 of the auxiliary valve 3. Two main valves 7 are provided at opposite positions, and the valve shafts of these main valves are respectively paired with a fourth cam portion 48 and a fifth cam portion 49 provided on the third cam body.

The operating positions of each of the cam parts and the valves etc. that move in conjunction with or together with the cam parts are appropriately set in advance depending on the shape and arrangement position of the cam parts. The cam pairing range of 26 and the second cam cylinder 43 is set to 90 degrees or more, and in both cases, the driven side is placed in the initial state at the initial position. Further, the first pilot valve 4 and the first main valve 6 are arranged to open at a rotation position of about 90 degrees from the rest position of the operating shaft 24, that is, in the vicinity of the first operating position 51 to the second operating position 52. The cam portion is set, and further, from the third operating position 53 and the fourth operating position 54 to the fifth operating position 55, the second pilot valve 5 is opened, and the first pilot valve 4 and the first main valve 6 are closed. Moreover, the second main valve 7 is opened only in the vicinity of the fifth operating position 55.

Note that the valve shaft of the second pilot valve 5 is connected to the valve body 2.
3 and is attached to the valve body 23, so that only the second thermocouple 17 side circuit is closed only when the second pilot valve is in the open state, and the first thermocouple side circuit is closed in other states. Only the 15th side circuit is closed. (FIG. 9) In the embodiment described above, when the operating shaft 24 is rotated from the rest position, the operating shaft is moved to the first position of the first cam cylinder 26 via the swing pawl 34 by the action of the clutch device 25. The operating shaft 24 and the first cam cylinder 26 that engage with the protrusion 35 rotate integrally, and the pairing of the first cam cylinder 26 and the fixed part allows the operation shaft 24 and the first cam cylinder 26 to rotate at the first operating position 51 which is the end point of the first rotation range. Rotation is prevented. In this state, the main valve 2, the first pilot valve 4, and the first main valve 6 are placed in an open state by being paired with each cam portion. At this time, the ignition switch 22 is in the ON state due to its pair with the second cam part 37, and if this state is maintained for a certain period of time, it will be excited by the action of the flame formed in the first pilot burner 13 and the first thermocouple 15. A magnet using a coil 19 holds the main valve 2 in an open state, and at this point, the operating shaft 24 is rotated by a slight angle to return to the second operating position 52, or when the operating force is released, the swing claw 34 The engagement with the first protrusion 35 is removed, and the first cam cylinder 26 is rotated back to the initial position by the return spring spring 30, and the ignition switch 22 is turned off.
It becomes OFF. At the same time, the auxiliary valve 3 also returns to the open state,
A gas circuit for boiling water up to the water pressure responsive gas valve 50 is in communication. The water heater is now ready for use. When the hot water faucet (not shown) is opened when the water heater is ready for use, the water flow generated in the water circuit is detected and the water pressure-responsive gas valve 50
opens, thereby supplying gas to the first main burner 11 and combusting it. In other words, the water boiling function is in use.

When the water boiling function is in use, if the first main burner 11 or the first pilot fire 13 is extinguished due to a gust of wind, the first
A first thermocouple 15 arranged opposite to the pilot burner 13
no longer generates an electromotive force, and as a result, the main valve 2 as the pilot safety valve closes. That is,
The gas circuit to the appliance is shut off at the most upstream part where the main valve 2 is disposed to ensure a safe state.

At this operating position, the swinging pawl 34 of the clutch device faces the second protrusion 36, and when the clutch device is further rotated to the third operating position 53, which is the end point of the second rotation range, the first cam cylinder 26 and The two-cam cylinder 43 and the ignition switch 22 operate in the same manner as described above, and at the same time, the first pilot valve 4 closes and the changeover switch 20 switches to the second thermocouple 17 side. During this time,
Due to the operation of the changeover switch, the main valve 2 is suddenly closed, but the main valve 2 is held open again at this third operating position 53 by the cam pairing with the first cam portion 27 of the first cam cylinder 26. Ru.

Then, in the same manner as above, when the first cam cylinder 26 is rotated back to the fourth operating position 54, the first cam cylinder 26 is rotated back to the initial position, and the auxiliary valve 3 is returned to open and the second pilot burner 14 is Only the circuit of 1 is placed in the open state, and the pilot burner 14 is placed in the ignited state.

Next, when the operating shaft 24 is rotated to the fifth operating position 55, the second main valve 7 is opened, and the second main burner 1 is opened.
The circuit to 2 is connected, and the flame is transferred from the second pilot burner 14 to the second main burner 12, and the bathtub becomes in use.

When the bath pot is in use, if the corresponding second main burner 12 or second type burner 14 is extinguished due to a gust of wind, etc., the second thermocouple corresponding to the second type burner 14 17 is no longer heated, and as a result, the main valve 2 is closed and the entire gas circuit is cut off, as in the case of using the water boiling function, thereby ensuring a safe state.

As described above, in the above operating device, there is no need to separately provide the main valve 2 as a pilot flame safety valve on the bath side and the water boiler side, and only one main valve 2 as the pilot flame safety valve is provided. Since safety measures can be taken when reheating the bath and boiling water, an increase in the number of parts required for the bath pot with water heater can be suppressed accordingly.

When it is rotated back from the fifth operating position 55, it continues to rotate to the stop position and all gas circuits are closed.

In the above description, the first main valve 6 is opened by rotating the operating shaft 24 to the second operating position 52. That is, the first main valve 6 is not necessarily required since it is opened when the hot water supply water circuit is opened and is normally in a closed state.
Therefore, in a type that does not use this first main valve,
The fourth cam portion 48 is also unnecessary.

Further, in the above embodiment, as shown in FIG. 2, a first indicator meter 56 is attached to the first thermocouple 15.
Since the second thermocouple 17 and the second indicator meter 57 are connected in parallel, the first operation position 5
Ignition of each corresponding pilot burner can be confirmed at the first and third operating positions 53. A voltmeter, ammeter, etc. may be used as this indicator meter.

[Brief explanation of drawings]

Fig. 1 is an explanatory diagram showing the operation of the conventional example, Fig. 2 is an explanatory diagram of the embodiment of the present invention, Fig. 3 is an explanatory diagram of the ignition electric circuit, and Fig. 4 is an explanatory diagram of the valve device used in the embodiment of the present invention. 5 is a side view thereof, FIG. 6 is an exploded perspective view of the clutch device used therein, FIG. 7 is a cross-sectional view of the first cam cylinder portion, and FIG. 8 is a cross-sectional view of the vicinity of the third cam body. Figure 9 is an explanatory diagram showing the relationship between the operation of each valve body and switch and the rotational position of the operating shaft, and in the figure 1... Valve device, 2... Main valve, 11... First valve.
Main burner, 12...Second main burner, 13...First
Pilot burner, 14...Second pilot burner, 15...
First thermocouple, 17... Second thermocouple, 19... Exciting coil, 51... First operating position, 52... Second operating position, 53... Third operating position, 54... Fourth operating position, 55...Fifth operation position.

Claims (1)

[Claims] 1. An operating device used in a bath kettle with a water heater, which is equipped with a pilot burner that corresponds to each of the two main burners for bath and water boiling, and a thermocouple that is heated separately by each of these burners, In an operating device equipped with an electromagnetic valve-type pilot safety valve that maintains the gas circuit to each main burner and pilot burner in an open state by the electromotive force of the thermocouple, each main burner and pilot burner A pilot safety valve is disposed upstream in the gas flow path formed in the main body of the device, and a first,
The second pilot valves 4 and 5 are inserted separately to divide the rotation range of the operating shaft into two, and in the first rotation range, the first pilot valve 4 supplies gas to the pilot burner for boiling water.
At the same time, in the second rotation range, a second pilot valve 5 is opened to supply gas to the pilot burner for the bath, and a second pilot valve 5 is opened after the pilot valve 5 and supplies gas to the main burner for the bath. The main valve 7 is opened, a cam body is rotatably inserted onto the operating shaft for rotational operation, and a return rotational force toward the initial position is applied to the cam body by a spring, These operating shafts and the cam body are connected via a clutch device that is released by the return rotational force applied to the former, and furthermore, the cam slope of the cam body that is extrapolated to the above operating shaft has a lift that is in the closed state at the initial position. An operating device for a bathtub with a water heater that touches the tip of the valve stem of a valve-type pilot safety valve.