JPS622440Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to an electrically controlled bathtub with a water heater.
In particular, a series of controls for this kind of outdoor equipment, from ignition to extinguishing, can be controlled remotely, and a main control unit is installed outside the bathroom, allowing all controls and operations to be performed. In addition, the sub-operation section placed in the bathroom can also be operated as needed, thereby providing a control device with excellent operability and safety.

Hereinafter, the structure and effects of the present invention will be described in detail with reference to the illustrated embodiments. Fig. 1 shows the electrical circuit diagram. 1 is the main operation section, 2 is the sub-operation section, and 3 is the main operation section. For example, the operating section 1 is disposed on the wall of the kitchen, the sub-operating section 2 is disposed on the wall of the bathroom, and the appliance 3 is disposed near the outer wall of the bathroom, and the three are electrically connected as appropriate. In addition, the plurality of solenoid valves inserted into the gas circuit in the appliance 3 are
They are arranged as shown in the figure. Here, to explain the relationship between the solenoid valves in more detail, the main valve 4 following the gas inlet opens and closes the main gas circuit and the circuit to the pilot burner 5, and the main gas circuit is branched as appropriate for bath use. Gas is supplied to the main burner 6, sub-pilot burner 7, and first burner 8, second burner 9, and third burner 10 for the water heater, respectively. A bath valve 11 is inserted into the circuit to the main burner 6, and a sub-pilot valve 12 is inserted to the sub-pilot burner 7.
is inserted to open and close the gas circuits to these gas circuits. On the downstream side of the branch point to these gas circuits, a first hot water supply valve 13 and a water pressure responsive gas valve 14 are inserted in series to open and close the gas circuits to these gas circuits. 1st from the downstream side of the gas valve
A branched gas connection is made to burner 8, second burner 9, and third burner 10, and a second hot water valve 15 is connected to the branch circuit to the second burner 9, and a third hot water valve 16 is connected to the third burner 10. are inserted respectively.

Regarding the electrical connection relationship of each solenoid valve described above, the first
This will be explained in further detail with reference to the drawings.

The power is turned on to the main operation unit 1 installed in the kitchen, etc., and the three are appropriately connected to the sub-operation unit 2 and the appliance 3 through a plurality of connection terminals provided respectively. The main operating unit 1 includes a power supply device 18 including a power switch 17, an ignition switch 19, a flame detection circuit 20, and a capacity selection switch 21.
is accommodated, and eight connection terminals are provided to enable electrical connection with the sub-operation section 2 or the instrument 3.

The power supply device 18 includes a rectifier and a transformer of a bridge circuit using diodes, the negative terminal of which is grounded. On the other hand, a flame detection circuit 20, a main valve circuit 22, an ignition circuit 23, and a main operation circuit 24 are connected in parallel to the positive electrode.
The negative pole of 0 is grounded and its input terminals 25, 26 are connected to connection terminals 28, 29 of a thermocouple 27 located inside the appliance 3 and in the vicinity of the pilot burner 5.

The main valve circuit 22 consists of a normally open contact 30 that serves as an output contact of the flame detection circuit 20, and a parallel circuit of a light emitting diode 31 and a diode 32 connected in series to the normally open contact 30, and the negative pole of the light emitting diode 31 is grounded.
The negative electrode of the other diode 32 is connected to the terminal 33. The ignition circuit 23 consists of a parallel circuit of a light emitting diode 35, a terminal 36, and a diode 37 connected in series to the normally open contact 34 of the ignition switch 19. The negative pole of the light emitting diode 35 is grounded, and the negative pole of the diode 37 is It is connected to terminal 33.

The main operating circuit 24 includes a normally closed contact 38 of the ignition switch 19 and a normally open output contact 39 of the flame detection circuit 20.
Furthermore, it is composed of a series circuit of terminals 40, and the negative pole of the normally closed contact 38 is connected via the normally closed output contact 41 of the flame detection circuit 20 and a confirmation circuit in which the negative pole in the flame detection circuit 20 is grounded via the light emitting diode 42. This constitutes a start confirmation circuit.

The movable contact 43 of the capacity selector switch 21 is connected to the normally open output contact 39, and its corresponding fixed contact has a three-pole configuration, with one pole in the neutral state and the other two poles in the terminals 44 and 45. It is connected.
In addition, the main operation unit 1 has a grounded terminal 4.
6 is provided, and this terminal is connected to a terminal 47 provided in the device 3, and further, this terminal is connected to the other terminal 48 in the device 3 via the main valve 4 provided in the device 3. .

Inside the device 3, a parallel circuit of the sub-pilot valve 12 and the igniter 49 and a normally closed contact 51 of a relay 50 are connected in series.
The terminal 52 and the terminal 48 are connected to the terminals 36 and 33 of the main operating section 1, respectively.

Further, the bath valve 11 whose negative pole is connected to the terminal 47 and the first to third hot water supply valves 14, 15, 16 are connected in parallel, but the positive pole of the bath valve 11 is connected to the terminal 53 and the positive pole of the first hot water supply valve 14 is connected in parallel. is terminal 5
4 to the terminal 40 of the main operation part 1 and the terminal 55 of the sub-operation part 2, and the positive terminal of the third hot water supply valve 16 is connected to the appliance via the terminal 56, the terminal 57 of the sub-operation part 2 and the normally open contact 59 of the relay 58. 3
After returning to the terminal 60 on the side, the positive terminal of the second hot water supply valve 15 is connected from the terminal 61 in the appliance 3 to the terminal 62 of the sub-operation part 2 and the normally open contact 63 of the electromagnetic relay 58 to the terminal 45 of the main operation part 1. After returning to the terminal 64 on the appliance 3 side, the water is connected to the terminal 44 of the main operation part 1, and a diode 65 is inserted between the positive electrode of the second hot water valve 15 and the positive electrode of the third hot water valve 16. ing. Further, a normally open contact 67 of the relay 50 inserted between the terminal 66 and the terminal 47 is inserted between the terminal 54 and the terminal 52.

Next, a changeover switch 68 and a bath operation circuit 69 are housed in the sub-operation section 2, and the movable contact 70 of the change-over switch 68 is connected to the main control section from the terminal 55 of the sub-operation section through the terminal 54 of the appliance 3. The terminal 5 is connected in series to the ignition circuit 24 of the operation unit 1, and the series circuit of the movable contact and the corresponding fixed contact 71 and the relay 58, the light emitting diode 72, and the bath operation circuit 69 are connected in parallel.
5 and 73, and the terminal 7
3 is grounded, and the fixed contact 71 is further connected to the electromagnetic relay 50 via terminals 74 and 66. Here, the bath operation circuit 69 includes a bath switch 75 with normally open contacts, a bath fire extinguishing switch 76 with normally closed contacts, an electromagnetic relay 77, and its normally open contacts 78.
A self-holding circuit is constructed.

The fixed contacts of the changeover switch 68 consist of four poles,
As described above, one pole 71 is connected to the relay 51, one pole 79 is in a neutral state, and one pole 80 of the other two poles 80, 81 is connected to the normally closed contact 82 of the relay 58. The other one pole 81 is connected to the terminal 62 and the other pole 81 is connected to the terminal 57 through the normally closed contact 83 of the relay 58, respectively.

To explain the operation of the above-mentioned control device in more detail, when the power switch 17 is closed, the flame detection circuit 20 is energized to confirm that the circuit is normal. The inserted light emitting diode 42 emits light, confirming whether the circuit is normal or abnormal.

Next, when the ignition switch 19 is pressed, the contacts are switched, the normally open contact 34 of the ignition circuit 23 is closed, and the sub-pilot valve 12, the main valve 4, and the
The igniter 49 is energized and the pilot burner 5 and sub-pilot burner 7 are ignited. When this state is maintained for a certain period of time, the thermocouple 27 is heated by the flame of the burner, and when the temperature rises to an appropriate temperature, the thermoelectromotive force reaches a predetermined value, and the input of this causes an output from the flame detection circuit 20, and the thermocouple 27 is constantly heated. Open contact 3
0 and 39 are closed, the normally closed contact 41 is opened, the light emitting diode 42 extinguishes light, the light emitting diode 31 emits light to notify the pilot ignition state, and the main valve 4 is held in the open state. Ru.

When the operating force of the ignition switch 19 is released, the movable contact returns and the main operating circuit 24 is connected, and the light emitting diode 72 in the sub operating section 2 is energized to emit light, while the light emitting state that was previously maintained is energized. The hot light emitting diode 35 is extinguished and the circuit to the igniter 49 and sub-pilot valve 12 is opened. In this case, if the movable contact 70 of the changeover switch 68 in the sub-operation section 2 is connected to the fixed contact 71, the relay 5
0 and 58 are activated, the output contacts of these relays reverse their opening and closing states, the light emitting diode 35 of the main operating section 1 is in a light emitting state, and the hot water supply capacity can be switched on the main operating section 1 side. In addition to informing that there is a hot water supply, the changeover switch 21 can be operated to open the second and third hot water supply valves 15 and 16 by the action of the relay 58. That is, the movable contact 4 of the changeover switch 21
3 is connected to the neutral contact, the first hot water supply valve 1
Only the first burner 8 is opened, and only the first burner 8 burns in response to the operation of the hydraulically responsive gas valve 14, so that the hot water supply capacity is at a minimum. The movable contact 21 is connected to the fixed contacts 84 and 85.
When the connection is switched to , the second and third hot water supply valves 15 and 16 are additionally opened in sequence due to the action of the diode 65, increasing the hot water supply capacity.

Conversely, the movable contact 70 of the changeover switch 68 in the sub-operation section 2 is changed from the fixed contact 71 to the other fixed contact 79,
80 and 81, the circuit to the relay 58 is opened and its contacts return to the state shown in the figure, and the hot water supply capacity can be switched in the same manner as described above, and in this case, It is impossible to switch the hot water supply capacity with the main operation unit 1, and on the other hand, the circuit to the relay 50 is also opened and its contact is restored, and the light emitting diode 3
5 goes out, confirming that the hot water supply capacity cannot be switched using the main operation unit 1.

Next, when using the bath, switch 6
0 or not, when the bath switch 75 or the fire extinguishing switch 76 is operated, the main burner 6 burns and extinguishes accordingly. Furthermore, since the circuit for this purpose employs a self-holding circuit, even if the power switch 17 is opened while the bath is in use, accidents caused by turning it on again are prevented.

In addition, in the case of the embodiment of the present invention, a feedback circuit is appropriately incorporated between the instrument 3 and the sub-operation section 2, and the connection cord between the main operation section 1 and the instrument 3 and the connection cord between the sub-operation section 2 and the instrument 3 are connected to each other. It also has an eight-wire configuration, allowing the common use of an eight-core cable as a remote control connection cord, which is a great advantage in equipment installation work.

In addition, in the case of the embodiment of the present invention, the pilot burner 5 is installed in the center.
The main burner 6 for the bath and the first to third burners 8, 9, 10 for hot water supply are arranged on both sides of the main burner 6, and the gas circuit to the second and third burners 9, 10 on the outside is connected to an electromagnetic Since valves 15 and 16 were inserted separately,
The first burner 8 is in a combustion state in any case, and when switching the hot water supply capacity, the flame will surely transfer from the pilot burner 5 to the second and third burners 9 and 10, eliminating the drawback of poor flame transfer. be done.

As detailed above, the control device of the present invention switches the hot water supply capacity by inserting multiple solenoid valves into the gas circuit to multiple burners and selectively opening and closing these solenoid valves with a changeover switch. In the bath pot with a water heater, the pilot ignition operation and the hot water supply capacity switching operation can be performed from the main operation part 1, and the hot water supply capacity switching and the bath use operation can be performed from the main operation part 1. The switch 21 for switching the capacity provided on the main operation section 1 is configured to be able to be operated from the sub-operation section 2 which is separate from the sub-operation section 2.
The solenoid valve can be selectively opened and closed only when the solenoid valve 8 is set at a specific position where the capacity is not switched. When using the water heater for showering in the bath, the hot water supply capacity can only be switched in the bathroom depending on the use, so accidents caused by incorrect operation such as showering with boiling water are also possible. This can be prevented in advance, making it highly safe.

[Brief explanation of the drawing]

FIG. 1 is an electric circuit diagram of an embodiment of the present invention, and FIG. 2 is a gas circuit diagram thereof. ...Toggle switch.

Claims (1)

[Scope of utility model claims] In a bathtub with a water heater, the hot water supply capacity can be changed by inserting a plurality of solenoid valves into the gas circuit to the plurality of burners and selectively opening and closing these solenoid valves with a changeover switch. The pilot ignition operation and the hot water supply capacity switching operation can be performed from the main operation part 1, and the hot water supply capacity switching and the bath use operation can be performed from the auxiliary operation part 2 which is separate from the main operation part 1. The capacity changeover switch 21 provided in the main operation section 1 selectively switches the electromagnetic valve only when the changeover switch 68 of the sub-operation section 2 is set to a specific position where the capacity is not switched. A control device for a bathtub with a water heater, characterized in that it can be opened and closed at different times.