JPS5947217B2 - automatic bath pot - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bathtub that automatically performs a series of subsequent operations, such as stopping the water supply to the bathtub and stopping combustion of the burner, by simply performing a starting operation.

This will be explained in detail based on an example of the drawings.
Reference numeral 1 denotes a gas supply pipe leading to a main burner 2, and a thermoelectric safety valve 3 and a main solenoid valve 4 are provided from upstream thereof, and a pilot solenoid valve 5 is provided in parallel with the safety valve 3.

6 is a pilot burner branched from the upstream side of the main solenoid valve 4, and a thermocouple 7 faces it.

This thermocouple 7 and an electromagnet 8 that opens and closes the safety valve 3 constitute a thermoelectric circuit.

The main solenoid valve 4 has a main valve 10 suspended from a diaphragm 9.
is the provision.

A pressure inlet 13 of the auxiliary valve chamber 12 provided with the auxiliary valve 11 communicates with the upstream side of the gas passage, and a pressure outlet 14 communicates with the downstream side.

A communication port 15 is provided in the auxiliary valve chamber 12 to communicate with a back pressure chamber 17 of the diaphragm 9.

When the electromagnet 18 connected in parallel with the electromagnet 8 is energized, the sub-valve 11 opens the pressure inlet 13 and closes the pressure outlet 14, and supplies the primary gas pressure to the back pressure chamber 17 of the diaphragm 9 through the communication port 15. In addition, the main valve 10 is designed to open automatically.

19 is a level switch that detects the water level in the bathtub 20 and switches. Normally, the circuit on the side of the water stop electromagnet 21 connected in parallel with the electromagnet 18 is closed, and the switch is switched when the water level in the bathtub 20 reaches the set water level. This is to close the circuit on the electromagnet 18 side.

A combustion control mechanism 22 controls the combustion of the main burner 2, and is composed of a timer body 23 and a timer switch 24.

This timer switch 24 is connected between the electromagnet 18 and the level switch 19.

Reference numeral 25 is an operating shaft for setting the timer main body 23 to an appropriate time, and a lever 26 fixed to this operating shaft 25 temporarily controls a switch 28, which is connected in series to an electromagnet 27 that opens and closes the pilot solenoid valve 5, and is normally open. It closes by pressing.

This lever 26 and switch 28 constitute a gas operating mechanism 29.

The electromagnet 27 is connected to an AC power source 30, and an ignition transformer 31 is connected in parallel with the electromagnet 27.

32 is a power switch.

Reference numeral 33 denotes a pin fixed to the timer main body 23, and the pin 33 rotates the cam 34, thereby causing the arm 35 provided opposite the cam 34 to rotate about the support shaft 36.

This arm 35 presses a suction plate 37 provided opposite to the water stop electromagnet 21 to bring it into contact with the electromagnet 21.

A spring 52 biases the adsorption plate 37 in a direction away from the electromagnet 21.

The suction plate 37, the spring 52, and the water stop electromagnet 21 constitute a water stop mechanism 38.

Next, the water supply mechanism 39 will be explained. 40 is the bathtub 20
It is a water supply valve arranged in the water supply channel 41 to the diaphragm 4.
It is attached to 2.

43' is a small hole that communicates the back pressure chamber 43 of the diaphragm 42 with the inlet 44.

45 is a needle valve that opens and closes the opening 46 of the water supply valve 40, and a locking piece 47 provided on the needle valve 45 engages with the arm 35 and rises.

48 is a magnetic body attached to the needle valve 45, and is attracted by a magnet 49 provided opposite to the magnetic body 48 to hold the needle valve 45 upwardly.

A spring 50 constantly presses the needle valve 45 downward, and is stronger than the magnetic force of the magnet 49.

51 is a stop switch connected in series to the water stop electromagnet 21.

53 is a circulation heating section arranged above the main burner 2; 54
is a pipe, and 55 is a pilot stop switch connected in series to the electromagnet 8.

Since the present invention is constructed as described above, when using the present invention, first, the power switch 32 is closed, and the timer main body 23 is rotated by the operation shaft 25, and the switch 28 is operated in conjunction with this by the lever 26. is closed by pressure,
When the pilot solenoid valve 5 opens, the ignition transformer 3
1 acts, and the pilot burner 6 starts combustion.

Since the thermocouple 7 is heated by this pilot flame, the safety valve 3 is opened and the water stop electromagnet 21 is energized.

Therefore, when the operating shaft 25 is rotated roughly to set the time, the lever 26 comes out of contact and the switch 2
8 will be developed.

Thereby, even if the pilot electromagnetic valve 5 is closed, the safety valve 3 is opened and gas is supplied to the pilot burner 6, so that the pilot burner 6 continues combustion.

In parallel with the process up to this point, the pin 33 operates the cam 34 by rotating the operation shaft 25, and the arm 35 is rotated about the support shaft 36, so that the suction plate 37 is moved by the spring by this arm 35. 52, the electromagnet 2
1 and is held by suction.

At the same time, the needle valve 45 engages with the arm 35 and rises against the spring 50, and the magnetic body 48 is attracted to the magnet 49 to hold the needle valve 45 upward.

Since the opening 46 opens as the needle valve 45 rises,
The pressure in the back pressure chamber 43 decreases, the water supply valve 40 opens, and water supply to the bathtub 20 begins.

Then, the operation shaft 25 is further rotated to set the timer main body 23 to the required time.

Thus, when the water level in the bathtub 20 reaches the set water level, the level switch 19 switches from the water stop electromagnet 21 side to the electromagnet 18.
Since the water stop electromagnet 21 is demagnetized and the adsorption plate 37 is released, the arm 35 is pressed by the spring 52, so the arm 35 and the needle valve 45 are in a free state, and the spring 50 is stronger than the magnetic force of the magnet 49, so the needle valve 45 descends.

Therefore, since the opening 46 is closed, the water supply valve 40 is closed and water supply to the bathtub 20 is stopped.

On the other hand, since the electromagnet 18 of the main solenoid valve 4 is excited, the sub-valve 11 operates to open the pressure inlet 13 and close the pressure outlet 14, and the main valve 10 automatically opens and the main burner 2 The pilot flame ignites the gas and starts the main combustion.

When the timer main body 23 moves back and the set time elapses, the timer switch 24 opens and the current to the electromagnet 18 is cut off, so the main solenoid valve 4 is closed and combustion is stopped.

In order to also stop combustion in the pilot burner 6, the switch 55 may be suppressed and opened.

Moreover, if it is desired to stop the water supply to the bathtub 20 midway through, the stop switch 51 can be opened.

In this embodiment, the time for the timer body 23 must be set in consideration of the water supply time; however, the timer body 23 is activated by the operation of the water stop mechanism 38 by switching the level switch 19. If you do this, you only need to consider the boiling time when setting the time.

The present invention thus provides a time setting operation shaft provided on the timer body, an electromagnet and an ignition transformer for a pilot solenoid valve provided in a gas line connected to a commercial power source via a switch, and a time setting rotation of the operation shaft. A lever fixed to the operating shaft that temporarily closes the above switch during operation, a water supply valve arranged in the water supply channel leading to the bathtub, and a lever fixed to the operating shaft that temporarily closes the above switch, and a water supply valve that resists the spring during operation after the above switch is closed on the operating shaft. An arm rotated by a pin fixed to the timer body that opens the timer, a thermoelectric safety valve installed in the gas line in parallel with the pilot solenoid valve, a level switch that detects the set water level in the bathtub and switches, and a switch that faces the pilot burner. An electromagnet for a thermoelectric safety valve connected to a thermoelectric body, a water-stop electromagnet connected to a thermocouple via a normally closed contact of a level switch, which keeps the water supply valve open when energized, and a normally open level switch. The electromagnet of the main solenoid valve that is connected via the side contact and is energized to open and supply gas to the main burner.The electromagnet of the main solenoid valve is set for a time by the rotation of the operating shaft and moves back from the start of operation and after the set time has elapsed. The main solenoid valve is configured with a timer body that opens the timer switch connected in series and cuts off the power to the main solenoid valve.
In addition to the starting operation, the operating shaft of the timer body automatically returns to the initial state that allows the starting operation when the main fire is extinguished, making the operation of this type of automatic kettle extremely simple and extremely convenient.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is an overall configuration diagram, and FIG. 2 is an electric circuit diagram. 2... Main burner, 6... Pilot burner, 20... Bathtub, 22... Combustion control mechanism, 29... Gas operation mechanism , 38...
...Water stop mechanism, 39...Water supply machine collection

Claims (1)

[Claims] 1. The operating shaft for time setting provided on the timer body, the electromagnet and ignition transformer of the pilot solenoid valve provided in the gas line connected to the commercial power supply via a switch, and the above switch during the time setting rotation of the operating shaft. A lever fixed to the operating shaft that temporarily closes it, a water supply valve placed in the water supply channel leading to the bathtub, and a timer body that opens the water supply valve against a spring during operation after closing the switch on the operating shaft. An arm rotated by a pin, a thermoelectric safety valve installed in the gas line in parallel with the pilot solenoid valve, a level switch that detects the set water level in the bathtub and switches, and a thermoelectric element facing the pilot burner. The electromagnet of the thermoelectric safety valve is connected to the thermocouple through the normally closed contact of the level switch.The water stop electromagnet that keeps the water supply valve open when energized is connected to the thermocouple through the normally open contact of the level switch. The electromagnet of the main solenoid valve that is energized and opens to supply gas to the main burner, and the timer switch that is connected in series with the electromagnet of the main solenoid valve that is set for a time by rotation of the operating shaft and moves back from the start of operation and after the set time has elapsed. This automatic bath kettle consists of a timer body that opens the main solenoid valve and shuts off power to the main solenoid valve.