JPH0328256Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application and overview of the invention] The invention relates to a remote temperature control device for water heaters, etc. When there are multiple hot water supply locations, it is possible to The purpose is to improve the operability of this type of remote temperature control device by making it possible to adjust the temperature of hot water at any location.

[Prior art and its problems] For example, as a water heater that can supply hot water to two places including a bathroom and a kitchen,
There is something like the one described in the -23088 publication.

As shown in FIG. 6, this device includes a bathroom operating device 1 on the bathroom side and a main operating device 2 on the kitchen side.The bathroom operating device 1 includes a changeover switch 10 and a first temperature controller. 11, and the other main operating device 2 is equipped with a second temperature regulator 20.

Reference numeral 3 denotes a heat-sensitive element such as a thermistor that senses the temperature of hot water coming out of the water heater. Second temperature regulator 2
0 is connected, and the excitation coil 32 (for controlling the amount of heat generated by the water heater) is controlled by the output of one of the temperature regulators.

A changeover switch 1 arranged on a bathroom operating device 1
If you switch 0 to the bathroom or kitchen side, the heat sensitive element 3
is connected to the first temperature regulator 11 on the bathroom side or the second temperature regulator 20 on the kitchen side, so that the outputs of the first temperature regulator 11 and the second temperature regulator 20 are applied to the excitation coil 32. The amount of combustion in the water heater is controlled.

In this device, switching between using the first temperature regulator 11 located in the bathroom and using the second temperature regulator 20 located in the kitchen is performed using a changeover switch 10 disposed in the bathroom operating device 1. This can only be done by using the shower, so if you set the hot water temperature high in the kitchen without knowing that there is a bather using the shower, the shower user may get burned by the suddenly discharged hot water. It has the advantage of eliminating danger.

However, with the above conventional remote temperature control device,
There was a problem that the remote temperature control device had poor operability.

In the case of the conventional type mentioned above, this is the first part on the bathroom side.
This is because the selection of the temperature regulator to be used between the temperature regulator 11 and the second temperature regulator 20 on the kitchen side can only be made in the bathroom.

That is, in the case of the above conventional temperature controller, when selecting the temperature controller to be used from the first temperature controller 11 on the bathroom side and the second temperature controller 20 on the kitchen side, the bathroom operating device 1 is used. Selector switch 1 installed in
0 must be switched. Therefore, if it becomes necessary to use hot water in the kitchen under conditions where the changeover switch 10 is set on the bathroom side, if you want to adjust the hot water temperature in the kitchen, you will have to go to the bathroom. This results in the inconvenience of having to switch the switch 10 to the kitchen side. In other words, the operability is poor.

[Problem] The present invention aims at controlling the temperature of either of these by switching between the first temperature regulator 11 located in a first room such as a bathroom and the second temperature regulator 20 located in a second room such as a kitchen. In order to improve the operability of "remote temperature control devices such as water heaters that use a controller to adjust the calorific value of the heat source," this temperature control system is adopted to adjust the hot water temperature. The object of the present invention is to enable the selection of a container to be made in either the first chamber 12 or the second chamber 22.

[Means] The technical means of the present invention for solving the above problems will be explained according to the conceptual diagram shown in FIG. 11 and a first operation switch 13, and the other second chamber 22 is provided with a second temperature regulator 20 and a second operation switch 23, and a water flow switch 4 is inserted into the hot water circuit. A storage means 5 is provided which is set by the input signal of the operation switch 13 and reset by the AND output of the input signal of the second operation switch 23 and the deactivation signal of the water flow switch 4, and furthermore, the storage means 5 is set to the set state. A switching means 6 is provided which switches to the first temperature regulator 11 side in response to an output signal of a certain memory means 5 and switches to the second temperature regulator 20 side in accordance with the output of the memory means 5 in the set state. The heat generation amount of the heat source is controlled by the first temperature regulator 11 or the second temperature regulator 20.

[Effect] The above technical means works as follows.

(Regarding the initial stage when the power is turned on) When the power is turned on, the storage means 5 does not output any output and is in a reset state. Therefore, the switching means 6 is connected to the second temperature regulator 20 on the second chamber 22 side by the signal indicating the reset state (non-output state), and the second temperature regulator 20 is connected to the second temperature regulator 20 on the second chamber 22 side. 20 allows the amount of heat generated by the heat source to be controlled.

(When switching the temperature adjustment location to the first room 12 side) Next, when switching the temperature adjustment location from the second room 22 to the first room 12 side such as a bathroom,
It is only necessary to turn on the first operation switch 13 located at .

When the first operation switch 13 is turned on, the storage means 5, which is set only by the input signal of the first operation switch 13, enters the set state, and the output of the storage means 5 indicating the set state causes the switching means 6
is switched to the first temperature regulator 11 located in the first chamber 12. That is, the calorific value of the heat source is controlled by the first temperature regulator 11 located in the first chamber 12.

(When returning the temperature adjustment place to the second room 22 side) When the heat generation amount of the heat source is controlled by the first temperature controller 11 located in the first room 12, the temperature adjustment place is moved to the second room 22 side. The cases in which the water flow switch 4 is returned to the side will be described separately for cases in which the water flow switch 4 is in a de-energized state and cases in which it is in an energized state.

When the water flow switch 4 is in the de-energized state When the water flow switch 4 is in the de-energized state, that is, when the shower etc. are not being used in the first room 12, the water flow switch 4 is located in the second room 22. By turning on the second operation switch 23,
The storage means 5 is reset. That is, since the storage means 5 is reset by the AND output of the de-energizing signal of the water flow switch 4 and the power-on signal of the second operation switch 23, when the water flow switch 4 is de-energized, The storage means 5 can be reset simply by turning on the second operating switch 23.

Then, when the storage means 5 is reset, the switching means 6 is switched to the second chamber 2 by the reset signal.
2, and the amount of heat generated by the heat source in the second chamber 22 can be controlled.

When the water flow switch 4 is in the energized state On the other hand, if hot water is being drawn from the first chamber 12 side (using a shower etc.) and the water flow switch 4 is in the energized state, even if the second operating switch is 23, the storage means 5 is not reset. That is, since the water flow switch 4 is in the energized state, even if the second operation switch 23 is turned on, the de-energization signal of the water flow switch 4 and the second
The AND condition with the input signal of the operation switch 23 is not satisfied, and the storage means 5, which is designed to be reset by the AND output, is not reset.

Then, if the storage means 5 is not reset,
The switching means 6 is the first temperature regulator 11 of the first chamber 12.
The second chamber 22 remains set on the side.
This means that it will not be possible to switch to the other side. That is, when the first room 12 is in hot water mode by using a shower or the like, the temperature adjustment location is not switched to the second room 22 side (for example, the kitchen side).

As described above, according to the technical means of the present invention, the first temperature regulator 11 and the second temperature regulator 20
Among them, the temperature controller to be used is selected in the first chamber 1.
This can be done in both chambers 2 and 22.

[Effects] When the hot water is in the hot water state by using a shower or the like in the first room 12, the temperature adjustment location does not switch to the second room 22 side such as the kitchen, which not only eliminates the risk of burns, but also Furthermore, since the temperature controller to be used can be selected from either the first room 12 or the second room 22, it is no longer necessary to go to the bathroom to switch to the kitchen, unlike in the conventional system. This eliminates these inconveniences and improves the operability of the remote temperature control device.

When operating hot water in a bathroom, the temperature controller in the bathroom becomes effective without any conditions.
There is one described in Publication No. 57-182040. However, with this system, while the bathtub is being filled with hot water from the hot water faucet installed in the bathroom, the set temperature of the bathroom temperature controller is always in effect, so filling the bathtub takes a long time. However, it is impossible to obtain high-temperature water by setting a high temperature in the kitchen. In contrast, in the present invention, after switching the temperature adjustment place to the second room 22 side such as the kitchen, the second temperature controller 20 located in the second room 22 sets the hot water filling temperature. 1
When the hot water faucet in the room 12 (bathroom) is opened and hot water is filled, the hot water reaches the temperature set by the second temperature controller 20 in the second room 22 (kitchen). Therefore, if high-temperature water is required in the second chamber 22 (kitchen) during this long-time filling process, the second chamber 22 (kitchen)
By setting a high temperature with the second temperature controller 20 provided in the second room 2, it becomes possible to use high temperature water in the second room 22 such as the kitchen. Furthermore, by setting the hot water filling temperature again after using high-temperature water, the hot water filling operation can be continued without any problem.

[Example] Next, an example of the present invention described above will be described in detail with reference to the drawings.

FIG. 2 shows an overall schematic diagram of an embodiment of the present invention.

A main burner 71 is incorporated in the heat exchanger 7, and an upstream gas flow path 76 of the main burner 71 includes:
First valve 73, second valve 74, third valve 7
5 and are inserted in this order from the upstream side. or,
A pilot burner 72 is provided at the tip of a gas flow path branched from between the first valve 73 and the second valve 74.

On the other hand, on the downstream side of the heat exchanger 7 in the hot water flow path 70, a water flow switch 4 and a heat sensitive element 3 (a thermistor is used in this embodiment) are provided. 2nd depending on the output
The valve 74 is controlled to open and close, thereby turning the main burner 71 on and off.

The kitchen 25 is provided with a main operating device 2 and a second hot water faucet 26, and the main operating device 2 includes:
A power switch 24, a second temperature regulator 20 for adjusting the hot water temperature, and a second operation switch 23 for changing the temperature adjustment location from the bathroom to the kitchen are provided. The kitchen 25 in this embodiment is
This corresponds to the second chamber 22 described in the technical means mentioned above.

The other bathroom 15 (corresponding to the first room 12 described in the technical means section) is provided with a bathroom operating device 1 and a first hot water tap 16. The downstream side is branched into a flow path leading to a shower 18 and a flow path leading to a hot water tap 19 via a switching pot 17. In addition, the bathroom operating device 1 includes:
A first temperature regulator 11 for adjusting the hot water temperature and a first operating switch 13 for switching the temperature adjustment location from the kitchen 25 to the bathroom 15 are provided.

The signals from the operating devices installed in the kitchen 25 and the bathroom 15 and the water flow switch 4 and heat-sensitive element 3 built into the water heater main body 77 are transmitted to the water heater main body 77.
Processed by a control circuit 78 incorporated in 7,
This makes it possible to control the hot water temperature from each hot water faucet 16, 26, and to switch the place where the hot water temperature is adjusted between the kitchen 25 and the bathroom 15.

Therefore, the first operating switch 13 built into the bathroom operating device 1 is connected to the set input terminal of the flip-flop 50 corresponding to the storage means 5 described above, and the first operating switch 13 built into the bathroom operating device 1 is 1 temperature regulator 11 is connected to one input side terminal of switching means 6 (a selector switch is employed in this embodiment). Further, the second operation switch 23 incorporated in the main operation device 2 is connected to the input side of the first AND circuit 60 together with the inverted output of the water flow switch 4, and the output of the first AND circuit 60 is connected to the reset output of the flip-flop 50. It is designed to be applied to the side. Furthermore, a second controller built into the main operating device 2
The temperature regulator 20 is connected to one terminal on the input side of the switching means 6.

The output of the flip-flop 50 is applied to the switching means 6 as a switching signal for switching the switching means 6, and the output side of the switching means 6 is
It is connected to one input terminal of the differential amplifier 61. Further, the output signal of the thermal element 3 attached to the hot water flow path 70 downstream of the heat exchanger 7 is applied to the other input terminal of the differential amplifier 61.
Then, depending on the output amount of the differential amplifier 61, the third
The opening amount of the valve 75 is controlled, and thereby the combustion amount of the main burner 71 is controlled.

The specific electric circuit of the remote temperature control device is constructed as shown in FIG. 3, and its details will be explained next.

The control circuit 78 in the main body of the water heater includes the third valve 7 for controlling the combustion amount of the main burner 71 described above.
5 is inserted, and a first normally open output contact 771 of the second relay 40, which will be described later, is inserted in series with this exciting coil 79.

Second normally open output contact 77 of the second relay 40
2. The heat sensitive element 3 and the first fixed resistor 9 are connected in series, and the voltage at the midpoint between the heat sensitive element 3 and the first fixed resistor 9 is the differential voltage provided to control the third valve 75. It is applied to one input of amplifier 61.

The output contact 62 of the switching means 6 is connected to the other input terminal of the differential amplifier 61, and the output contact 62 is connected to the circuit connected to the kitchen 25 side or the bathroom 15 side.
It is designed to selectively switch to one of the circuits connected to the side.

The excitation coil 63 of the switching means 6 is connected in series with a first switching transistor 8 for turning the excitation coil 63 on and off. Further, the base side of the first switching transistor 8 is connected to the base side of the first switching transistor 8.
It is connected to the third terminal 44 and the eighth terminal 49 via a 2AND circuit 64.

On the downstream side of the excitation coil 63, the second relay 40 described above is provided, which operates at the same time as the power is turned on to close the circuit of the excitation coil 79 and the heat-sensitive element 3. is inserted into the collector side circuit of the two switching transistors 80. The base side of the two switching transistors 80 is connected to a third transistor provided in the water heater main body 77.
It is connected to the power switch 24 on the kitchen 25 side via the terminal 44.

Power is supplied to the main operating device 2 of the kitchen 25 from a first terminal 42 provided on the water heater body 77, and a second operating switch 23 and a power switch 2 incorporated in the main operating device 2 are connected to the main operating device 2 of the kitchen 25.
4 are provided in parallel with each other, and the second operation switch 2
3 output is the fourth terminal 45 of the water heater main body 77
is connected to one input terminal of the first AND circuit 60 described above. Further, the ground side of the power switch 24 is branched into a circuit equipped with the second temperature regulator 20 and a circuit equipped with the third fixed resistor 91, and the output of the second temperature regulator 20 is connected to the water heater main body 77.
is connected to one input terminal 65 of the switching means 6 described above through the second terminal 43 of
The high potential side of the fixed resistor 91 is applied to the aforementioned second AND circuit 64 via the third terminal 44.

The bathroom operation device 1 disposed on the bathroom 15 side includes the first operation switch 13 and the first operation switch 13, as described above.
In addition to the temperature regulator 11, a flip-flop 50 is also incorporated.

The bathroom operating device 1 has a sixth terminal 47.
Power is supplied through the first
The low potential side of the operating switch 13 is connected to a set input terminal 51 of a flip-flop 50.
Also, the reset terminal 52 of the flip-flop 50
is the fifth terminal 4 installed in the water heater body 77.
6 to the output section of the first AND circuit 60. Further, the output terminal 53 of the flip-flop 50 is connected to the base of a third switching transistor 81, and the output of the third switching transistor 81 is connected to one of the second AND circuits 64 through the eighth terminal 49. It is connected to the input side of. Finally, the power supply voltage divided by the first temperature regulator 11 and the fourth fixed resistor 92 is
It is connected to one input terminal 66 of the aforementioned switching means 6 in the water heater main body 77 via the seventh terminal 48 . The bathroom operating device 1 and the main operating device 2 are equipped with an indicator lamp 1 that indicates whether the temperature adjustment location has been switched to the bathroom or the kitchen.
4 and 21 are provided.

Now, in the above embodiment, when the power switch 24 provided in the main operating device 2 is turned on,
The high potential side output of the third fixed resistor 91 turns on the second switching transistor 80 inserted in series with the second relay 40, energizes the second relay 40, and connects its two normally open output contacts 771, 772 is closed, the excitation coil 79 for the third valve 75 that controls the combustion amount of the main burner 71 and the heat-sensitive element 3
electricity is supplied.

Further, since the high potential side voltage of the second temperature regulator 20 is connected to one input terminal 65 of the switching means 6 via the second terminal 43, the output of the second temperature regulator 20 and the heat sensitive element 3 are connected to each other. The output of the differential amplifier 61 is compared and amplified, and the excitation coil 79 is controlled according to the output of the differential amplifier 61.

That is, the excitation coil 79 that controls the combustion amount of the main burner 71 can be controlled by the second temperature regulator 20 located in the kitchen 25.

Next, when the first operating switch 13 provided on the bathroom operating device 1 is pressed, an output is output from the flip-flop 50 and the third switching transistor 8
The emitter side of No. 1 becomes “H”, and the “H” signal is sent to the second AND circuit 64 via the eighth terminal 49.
The AND output of this signal and the turn-on signal of the power switch 24 is output to the first switching transistor 8.
applied to the base of Then, the excitation coil 63 is energized and the switching means 6 is switched.
That is, the switching means 6 switches to the bathroom operating device 1.
The temperature can be adjusted using the first temperature regulator 11 on the side.

Next, in this state, the shower 1 of the bathroom 15
8, the water flow switch 4 is activated and its normally closed output contact 41 is opened, and the ground side potential of the normally closed output contact 41 becomes "L". That is, one input of the first AND circuit 60 becomes "L".
Further, while the water flow switch 4 is in operation, the solenoid valve 39 for the second valve 74 that turns on and off the gas circuit of the main burner 71 is in an open state.

When the second operation switch 23 is pressed in order to change the temperature adjustment location to the kitchen 25 side while the shower 18 is in use, an "H" signal is output from the low potential side of the second operation switch 23, which is sent to the first AND circuit 60. However, since the other input of the first AND circuit 60 (the output of the water flow switch 4) is "L" as described above, the AND condition of the two inputs to the first AND circuit 60 is is not established, and the first AND circuit outputs an "L" signal. Therefore, the flip-flop 50, which is reset by the "H" signal of the first AMD circuit 60, is not reset.

That is, when the shower 18 or the like is used in the bathroom 15, the temperature control is not switched to the kitchen 25 side.

Next, when the water flow switch 4 is turned OFF by, for example, stopping the use of the shower 18, the normally closed output contact 41 returns to the initial state, and the water flow switch 4 is turned off.
The potential between the second fixed resistor 90 and the second fixed resistor 90 returns to "H", and the "H" signal is applied to one input terminal of the first AND circuit 60. When the second operation switch 23 is turned on under the condition that the water flow switch 4 is OFF (conditions in which the shower 18 etc. are not used in the bathroom), the de-energization signal of the second operation switch 23 and the water flow switch 4 are activated. When the AND condition of the input signal is satisfied, the first AND circuit 60 outputs an "H" signal.
That is, the reset terminal 52 of the flip-flop 50
A reset signal is applied to the flip-flop 50, so that the flip-flop 50 no longer outputs an output, so that the output on the emitter side of the third switching transistor 81 becomes "L". Therefore, the switching means 6 is returned to its initial state via the second AND circuit 64 and the first switching transistor 8. That is, the second
This allows the temperature regulator 20 to work effectively.

The time chart shown in FIG. 4 shows the series of operations described above.
It can be seen that only when the switch is in the de-energized state, switching to the kitchen side can be performed by turning on the second operating switch 23 on the kitchen side.

In the second embodiment shown in FIG. 5, the temperature adjustment location can be freely switched from the kitchen 25 side to the bathroom 15 side, and vice versa, and from the bathroom 15 to the kitchen 25.

The output of the second operation switch 23 is applied to a third AND circuit 67 in addition to the first AND circuit 60 described above, and the output of the flip-flop 50 is applied to the other input terminal of the third AND circuit 67. ing. The output of the third AND circuit 67 and the first operating switch 1 are connected via the fifth AND circuit 69.
The OR output with the output of 3 is input to the flip-flop 50 as a set signal of the flip-flop 50. Further, the output of the flip-flop 50 is applied to the fifth AND circuit 69. Furthermore, the Q output from the output terminal 53 is fed back to the input side of the flip-flop 50 as shown in FIG.
It is applied to the reset terminal 52 of the flip-flop 50 via the AND circuit 68 and the second OR circuit 56. Further, the output of the first operation switch 13 is also applied to the fourth AND circuit 68.

Now, in this second embodiment, the kitchen 2
When switching from the kitchen 25 side to the bathroom 15 side by operating the main operating device 2 on the 5 side,
It is sufficient to turn on the second operation switch 23 on the kitchen 25 side.

When the temperature adjustment location is set on the kitchen 25 side, the Q output of the flip-flop 50 is "L", that is, the output of the flip-flop 50 is "H", so the second operation switch 23 is By turning on, the AND condition of the second operating switch 23 and the Q output of the flip-flop 50 is established, and the third AND circuit 67 outputs an "H" signal. Since the "H" signal is applied to the flip-flop 50 as a set signal for the flip-flop 50, the "H" signal is output from the output terminal 53 of the flip-flop 50, similar to the first embodiment described above. The switching means 6 is then switched to the bathroom 15 side.

On the other hand, the state in which the switching means 6 is set on the bathroom 15 side (the output terminal 53 of the flip-flop 50
(from which the "H" signal is output), the first
When the operation switch 13 is pressed, the "H" signal of the flip-flop 50 coming out from the output terminal 53 and the first
The AND condition of the operation switch 13 is satisfied and the flip-flop 50 is reset. That is, the Q signal from the output terminal 53 becomes "L" and the switching means 6
is switched to the kitchen 25 side.

[Brief explanation of the drawing]

Fig. 1 is a conceptual explanatory diagram of the present invention, Fig. 2 is a schematic diagram showing the entire embodiment of the invention, Fig. 3 is an explanatory diagram of its circuit, Fig. 4 is its time chart, and Fig. 5 is a second embodiment. An explanatory diagram of an example, FIG. 6 is an explanatory diagram of a conventional example, and in the diagram, 4...water flow switch, 5...memory means, 6...
Switching means, 11...first temperature regulator, 12...first chamber, 13...first operation switch, 20...second
Temperature controller, 22...second chamber, 23...second operation switch.

Claims (1)

[Scope of utility model registration request] A first temperature controller 11 located in a first room such as a bathroom
and a second temperature controller 20 located in a second room such as a kitchen.
In a remote temperature control device such as a water heater, in which the calorific value of the heat source is adjusted by one of these temperature regulators, the first chamber 1
2 includes a first temperature regulator 11 and a first operating switch 1.
3, and a second temperature regulator 20 in the other second chamber 22.
and a second operating switch 23 are respectively provided, and a water flow switch 4 is inserted into the hot water circuit, and furthermore, the water flow switch 4 is set by the closing signal of the first operating switch 13, and is connected to the closing signal of the second operating switch 23 and the water flow. A storage means 5 is provided which is reset by an AND output with the deactivation signal of the switch 4, and further,
The switching means 6 switches to the first temperature regulator 11 side by the output signal of the storage means 5 in the set state, and switches to the second temperature regulator 20 side by the output of the storage means 5 in the reset state. A remote temperature control device for a water heater or the like, in which a first temperature regulator 11 or a second temperature regulator 20 is provided to control the calorific value of a heat source.