JP3081280B2 - Hot water supply temperature setting device for water heater - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot water supply temperature setting device for a water heater.

[0002]

2. Description of the Related Art Conventionally, in the case where a plurality of hot water outlets are branched from one hot water heater, a remote control device is attached to each hot water outlet and the hot water temperature from each hot water outlet is set by the remote control device. I have control.

For example, a description will be made of a hot water supply port of a bath and a hot water supply port of a kitchen. A bath is provided with a bath remote control device, and a kitchen is provided with a main remote control device. The hot water temperature can be set.

However, in such a control device, since there is sometimes a large difference between the temperature of hot water used in the bath and the temperature of the kitchen, if the temperature is set at a high temperature used in the kitchen, the high-temperature water is discharged during use of the shower in the bath. There is a risk of being done.

Therefore, in order to eliminate such a danger, for example, in Japanese Utility Model Publication No. 2-25072, which of the set temperatures of the bath side and the kitchen side is prioritized is determined by operating the changeover switch. In the case where the temperature set on the kitchen side is prioritized over the bath side, the above danger is reduced by setting the lower side of the set temperature, that is, the hot water supply giving priority to the safe side, as compared with the temperature set on the bath side. There is something that has been resolved.

[0006] On the other hand, this technique has no restriction on the above-mentioned temperature comparison when a hot water supply is switched by giving priority to a temperature set on the bath side over a temperature set on the kitchen side. On the other hand, the temperature set on the bath side is unconditionally given priority, and the temperature set on the bath side is supplied to the kitchen as it is.

[0007] This control concept is based on the premise that the set temperature on the bath side is generally lower than the hot water supply temperature used on the kitchen side, so it is safe to give unconditional priority to the set temperature on the bath side. There was an idea.

[0008]

However, if the bath-side set temperature is simply a bathing temperature or a shower water discharge temperature,
Even if the bath-side temperature was given priority over the kitchen side, the kitchen-side hot water temperature was almost 45 ° C or less, so there was almost no danger.

However, since the temperature of the bath water is low at the time of bathing on the bath side, there is a case where it is desired to perform hot water bathing to quickly bring the bath to an appropriate bath temperature. In such a case, it is necessary to raise the bath-side set temperature to a high temperature. In this state, if the bath-side set temperature is unconditionally prioritized by the changeover switch, high-temperature hot water is supplied from the kitchen side, which is dangerous. is there.

Further, according to the technique disclosed in Japanese Utility Model Publication No. 2-25072, when a switching operation is performed to give priority to the set temperature on the kitchen side over the bath side, the set temperature on the kitchen side is, for example, 80 ° C., and the set temperature on the bath side is If it is 40 ° C, the lower temperature 40
℃ (bath side set temperature) will be given priority.

Therefore, when it is desired to supply the hot water of 80 ° C. on the kitchen side, first the kitchen side is selected by the changeover switch, and then the hot water temperature is set to the low hot water temperature on the bath side in order to obtain safety. Check the temperature here and set the kitchen side to 80 ° C
It is necessary to perform an operation of lowering the temperature from the bath side set temperature of 40 ° C., and then operate the changeover switch again to the kitchen side first, and then return the kitchen side set temperature to the original desired temperature of 80 ° C.

In other words, the procedure requires a procedure of operation of a changeover switch for determining a priority temperature → operation of checking the hot water temperature → operation of lowering the set temperature → operation of the changeover switch → operation of returning the set temperature to the original temperature. Was complicated.

[0013]

According to the present invention, there are provided a plurality of temperature setting means for setting a temperature of hot water supplied from a water heater, and a plurality of setting means output from the plurality of temperature setting means upon input of a priority switching signal. Priority temperature selection means for selecting one of the temperature signals as a priority temperature; limit temperature setting means for outputting a safety temperature stored in advance as a limit temperature when a priority switching signal is input; Hot water temperature determining means for comparing the temperatures and outputting one as a final determined temperature, if the priority temperature is equal to or lower than the limit temperature, the priority temperature is set as the final determined temperature, and if the priority temperature is higher than the limit temperature, The present invention relates to a hot water supply temperature setting device for a water heater, wherein a limit temperature is set as a final determined temperature.

Further, according to the present invention, there are provided a plurality of temperature setting means for setting a temperature of hot water supplied from a water heater, and a plurality of set temperature signals outputted from the plurality of temperature setting means when a priority switching signal is inputted. Priority temperature selection means for selecting one of the following as the priority temperature, priority switching source temperature holding means for holding the priority temperature before the priority switching signal is input as the priority switching source temperature, and inputting the priority switching signal, A limit temperature setting means for comparing the safety temperature stored in advance with the priority switching source temperature and outputting the higher one as a limit temperature; and comparing the priority temperature with the limit temperature and determining one of the temperature as a final determined temperature. Hot water temperature determination means that outputs the priority temperature as the final determined temperature if the priority temperature is equal to or lower than the limit temperature, and sets the limit temperature as the final determined temperature if the priority temperature is higher than the limit temperature. Those of bets on the hot water temperature setting device water heater according to claim.

The present invention is also characterized in that the priority switching source temperature holding means holds a final determined temperature before inputting a priority switching signal as a priority switching source temperature.

Further, the present invention is provided with a limit temperature changing means, wherein (a) when the priority temperature is equal to or lower than the limit temperature, (b)
When the priority temperature is higher than the limit temperature, when the priority temperature is changed to a value equal to or lower than the limit temperature, the limit temperature is changed to a predetermined temperature higher than a settable upper limit value of the priority temperature. Thus, the present invention is also characterized in that up to the upper limit of the priority temperature can be set as the final determined temperature.

[0017]

According to the present invention, at the time of priority switching, the final switching temperature is not determined by directly comparing the priority switching source temperature and the priority switching destination temperature, and the lower one of the limit temperature and the priority switching destination temperature is determined. It will be the final determined temperature.

That is, for example, when the priority is switched from the kitchen side to the bath side, instead of comparing the kitchen side set temperature and the bath side set temperature, the bath side set temperature and the limit temperature are compared and the lower temperature is set. Becomes the final determined temperature.

[0019]

FIG. 1 is a block diagram of a hot water supply temperature setting device for a water heater according to the present invention, and FIG. 2 is a system diagram of a control unit and remote control devices according to the present invention. FIG. 3 is a circuit diagram illustrating a configuration.

First, referring to FIG. 1, 1 indicates a water heater, 2 indicates a main remote controller, 3 indicates a bath remote controller, and 4 indicates a control unit built in the water heater 1. .

The main remote controller 2 is, as shown in FIG.
The remote control device 3 is composed of functional parts such as an operation switch 6, an operation indicator lamp 7, a combustion indicator lamp 8, a priority indicator lamp 9, a hot water temperature setting volume 10, and the like.
As shown in the figure, the priority switch 11 and the operation indicator lamp 1
2. It is composed of functional units such as a combustion indicator lamp 13, a hot water temperature setting volume 14, and the like.

A description will now be given of each functional unit. The operation switch 6 is configured to be mechanically held.
The water heater 1 is configured to be operable when the switch is closed. The operation display lamps 7 and 12 are turned on when the operation switch 6 is closed, and the combustion display lamps 8 and 13 are turned on. Lights during the combustion of the machine 1,
The priority changeover switch 11 is configured to be mechanically held. When the switch is closed, the setting temperature of the bath remote control device 3 is prioritized, and when the switch is opened, the set temperature of the main remote control device 2 is prioritized. It is configured to be.

The priority display lamp 9 is a lamp for displaying a state in which the set temperature of the main remote controller 2 has priority.
Lights when the priority switch 11 of the bath remote control device 3 is opened.

Hot water temperature setting volume 10 of main remote control device 2
Functions effectively when the priority indicator lamp 9 is turned on, that is, when the set temperature of the main remote control device 2 is prioritized. The set temperature can be changed by operating the knob of the volume.

Hot water temperature setting volume of bath remote control device 3
Reference numeral 14 functions effectively when the priority changeover switch 11 is closed, that is, when the set temperature of the bath remote control device 3 is prioritized. The set temperature can be changed by operating the volume knob.

The main remote control device 2 constructed as described above,
Each functional unit of the bath remote control device 3 is connected to and controlled by the control unit 4. In particular, in the control unit 4, a safe temperature TA that does not pose a danger to the human body is stored in a storage unit such as a ROM. I remember.

That is, the temperature TA is stored in the storage unit in advance, and a safe temperature that does not pose a danger to the human body is selected regardless of the set temperature.

The control section 4 is provided with temperature setting means, priority temperature selecting means, limit temperature setting means, hot water temperature determining means, and limit temperature changing means (see FIG. 3).

The temperature setting means is a plurality of means for setting the temperature of the hot water supplied from the water heater 1, and is set by the respective hot water temperature setting volumes 10, 14 of the main remote controller 2 and the bath remote controller 3. You.

The priority temperature selection means is a means for selecting one of the plurality of set temperature signals output from the plurality of temperature setting means as the priority temperature TY when the priority switching signal is input.

The limit temperature setting means is a means for outputting a safety temperature TA stored in advance as a limit temperature TS when a priority switching signal is input.

The hot water temperature determining means is means for comparing the priority temperature TY with the limit temperature TS and outputting one of them as the final determined temperature.

The limit temperature changing means changes the limit temperature TS to a predetermined value equal to or higher than the upper limit of the priority temperature TY when the final temperature T is determined to be the priority temperature TY. That is, when the priority temperature TY is equal to or lower than the limit temperature TS, or when the priority temperature TY is higher than the limit temperature TS, the priority temperature TS is changed by the hot water temperature setting volumes 10, 14. When the temperature becomes equal to or less than the limit temperature TS, the limit temperature TS is
A predetermined temperature T higher than a settable upper limit value of the priority temperature TY
This is changed to S ′ so that up to the upper limit value of the priority temperature TY can be set as the final determined temperature T.

The operation of the present invention will now be described with reference to the flowchart shown in FIG.

First, when the priority switch 11 is switched from the main remote control device 2 provided in the kitchen to the bath remote device 3 [F1], the set temperature on the bath side is selected as the priority temperature TY [F2] ( Temperature setting means and priority temperature selection means).

Kitchen-side set temperature, ie, priority switching source temperature T
The safe temperature TA is selected as the limit temperature TS regardless of M [F3].

Next, the limited temperature TS output by the limited temperature setting means and the previously selected bath-side set temperature TY
[F4] TS <TY, and the lower temperature TS is selected as the final determined temperature T [F7] (hot water temperature determining means).

Next, by manually operating the hot water temperature setting volume 14, the bath-side set temperature TY is changed to a temperature TY 'lower than the limit temperature TS.

Again, the limit temperature TS and the bath set temperature T
If Y 'is compared with [F4] TS>TY', the lower temperature TY 'is selected as the final determined temperature T [F5]
(Hot water temperature determination means).

Then, the limit temperature TS is changed to the bath-side set temperature T.
The temperature is changed to a predetermined temperature TS 'higher than the maximum temperature TYmax that can be taken by Y' (TY) [F6] (limit temperature changing means).

Next, by manually operating the hot water temperature setting volume 14, the bath-side set temperature is returned from TY 'to the temperature TY before the change.

Through the above operation, hot water having the bath-side set temperature as the priority switching destination is supplied from the water heater.

FIG. 5 shows the configuration of another embodiment. This includes temperature setting means, priority temperature selection means, priority switching source temperature holding means, limit temperature setting means, hot water temperature determination means, and limit temperature change means.

Here, the temperature setting means, the priority temperature selecting means, the hot water temperature determining means, and the limit temperature changing means fulfill the same functions as in the above embodiment, and the priority switching source temperature holding means inputs the priority switching signal. The priority temperature before the switching is held as the priority switching source temperature, and the limit temperature setting means compares the safety temperature stored beforehand with the priority switching source temperature when the priority switching signal is input. One is output as the limit temperature.

The function of each means will be described with reference to the flowchart shown in FIG. 6 using a specific example similar to that of the above embodiment.

First, when the priority switch 11 is switched from the kitchen-side set temperature to the bath-side set temperature [F1], the bath-side set temperature is selected as the priority temperature TY [F2] (temperature setting means) (priority temperature selection) means).

The kitchen set temperature, that is, the priority switching source temperature T
M is compared with the safe temperature TA [F3] When the safe temperature TA is high, the higher temperature TA is selected as the limit temperature TS [F4].

On the other hand, when the safe temperature TA is low, the kitchen-side set temperature TM is selected as the limit temperature TS [F5] (priority switching source temperature holding means).

Next, the limited temperature TS output by the limited temperature setting means is compared with the previously selected bath-side set temperature TY. If [F6] TS <TY, the lower temperature T is set.
S is selected as the final determined temperature T [F9] (hot water temperature determining means).

Next, by manually operating the hot water temperature setting volume 14, the bath side set temperature is changed from TY to a temperature TY 'lower than the limit temperature TS.

By comparing the limited temperature TS with the bath-side set temperature TY ', if [F6] TS≥TY', the lower temperature TY 'is selected as the final determined temperature T [F7] (determining the hot water temperature). means).

Then, the limit temperature TS is set to the bath-side set temperature T.
The temperature is changed to a predetermined temperature TS 'higher than the maximum temperature TYmax that can be taken by Y' (TY) [F8] (limit temperature changing means).

Next, by manually operating the hot water temperature setting volume 14, the bath-side set temperature is returned from TY 'to the temperature TY before the change.

In the above embodiment, control is performed so that the limit temperature TS becomes as high as possible.

In this way, the final temperature T is determined by comparing the limit temperature TS with the priority temperature TY [F
6], the priority temperature TS is easily determined as the final determined temperature T,
Responsiveness of priority switching is improved.

In the above embodiment, the limit temperature TS may be higher than the temperature at which the human body is in danger, and hot water having a temperature at which the human body is at risk may be suddenly discharged after the priority switching.

However, such a phenomenon is limited to the case where hot water having a temperature dangerous to the human body is used immediately at the priority switching source. Therefore, there is no danger that the priority switching destination and the switching source are accompanied by the priority switching. Does not occur.

Further, as still another embodiment, the priority switching source temperature holding means in the above embodiment holds the final determined temperature before inputting the priority switching signal as the priority switching source temperature.

The relationship with each means is as shown in the block diagram of FIG. 7 and its operation should be explained in accordance with the flowchart of FIG. 6 as in the above embodiment. Even when the previous final determined temperature T is not equal to the priority switching source temperature TM and is equal to the limit temperature TS before the priority switching, the final determined temperature T can be held as the priority switching source temperature TY.

In the above, the embodiment has been described as having two control devices, a bath side and a main remote side, and having only one priority changeover switch. The present invention should be applied to a case where the device has a priority changeover switch.

[0061]

According to the present invention, after the priority switching by the priority change switch, the priority temperature is compared with the limit temperature, and when the priority temperature is lower than the limit temperature, the priority temperature is used. Since it was made to be the hot water temperature supplied from the water heater using the limited temperature, for example, to set a high temperature in the bath side, high temperature setting, even if the priority is switched from the kitchen side to the bath side, This high temperature is compared with the limit temperature, and when the high temperature on the bath side is higher than the limit temperature, the temperature of the hot water supplied from the water heater is used by using the limit temperature. There is an effect that safety can be sufficiently ensured without hot water being supplied at a temperature.

Further, in the present invention, since the limit temperature is interposed at the time of switching the priority temperature, the mode of the priority switching is controlled based on the limit temperature.
A desired high-temperature hot water supply can be easily obtained by the procedure of the operation of the priority changeover switch → the operation of decreasing the priority temperature → the operation of returning to the priority temperature, and there is an effect that the operation is not complicated and the operability can be improved.

Further, in some cases, the limit temperature is determined to be a high temperature by comparing the safety temperature stored in advance with the temperature of the priority switching source, so that the unnecessary low temperature is not set as the limit temperature. The response at the time of is good.

[Brief description of the drawings]

FIG. 1 is a block diagram of a hot water supply temperature setting device of a water heater according to the present invention.

FIG. 2 is a circuit diagram of the device of the present invention.

FIG. 3 is a block diagram of the device of the present invention.

FIG. 4 is a flowchart of the same.

FIG. 5 is a block diagram showing another embodiment.

FIG. 6 is a flowchart of the same.

FIG. 7 is a block diagram showing another embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 hot water heater 2 main remote control device 3 bath remote control device 4 control unit 6 operation switch 11 priority changeover switch 14 hot water temperature setting volume TY priority temperature TS limit temperature

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazuhiko Okada 43-1, Uozakihama-cho, Higashi-nada-ku, Kobe-shi, Hyogo Prefecture Inside of Nippon Yupro Co., Ltd. No. Japan Yupro Co., Ltd. (72) Inventor Shinji Hashii 43-1, Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo Japan Inside (72) Inventor Hiroshi Sawabashi 43-1, Uozakihama-cho, Higashinada-ku, Kobe-shi, Hyogo Japan (56) References JP-A-1-300155 (JP, A) JP-A-4-283351 (JP, A) JP-A-3-247950 (JP, A) JP-A-3-20558 (JP) , A) Japanese Utility Model Showa 60-48043 (JP, U) Japanese Utility Model Showa 60-240943 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24D 17/00 F24H 1/00 602

Claims (4)

(57) [Claims] 1. A plurality of temperature setting means for setting a temperature of hot water supplied from a water heater, and when a priority switching signal is inputted, one of a plurality of set temperature signals outputted from the plurality of temperature setting means is outputted. Priority temperature
A priority temperature selecting means for selecting as the (TY), by entering the priority switching signal, safe temperature (T stored pre Me
And limiting the temperature setting means for outputting a limit A) temperature (TS), and water temperature determining means for outputting one by comparing the priority temperature (TY) and the limiting temperature (TS) as the final determination temperature (T) , comprising a, if priority temperature (TY) is smaller than the limit temperature (TS), priority temperature (T
Y) is the final temperature (T), and the priority temperature (TY) is the limit temperature (T
If it is higher than (S), the limit temperature (TS) is used as the final determined temperature (T).
Hot water temperature setting device water heater, characterized in that that. 2. A plurality of temperature setting means for setting a temperature of hot water supplied from a water heater, and when a priority switching signal is inputted, one of a plurality of set temperature signals outputted from the plurality of temperature setting means is outputted. Priority temperature
A priority temperature selecting means for selecting as the (TY), a priority switching換元temperature holding unit that holds priority temperature before entering the priority switching signal a (TY) as a priority switching換元temperature (TM), the priority switching signal When input, the safety temperature (T
Compared with A) and the priority switching換元temperature (TM), any high temperature
A limit temperature setting means for outputting one as the limit temperature (TS) , and a hot water temperature determining means for comparing the priority temperature (TY) and the limit temperature (TS) and outputting one as the final determined temperature (T). , comprising a, if priority temperature (TY) is smaller than the limit temperature (TS), priority temperature (T
Y) is the final temperature (T), and the priority temperature (TY) is the limit temperature (T
If it is higher than (S), the limit temperature (TS) is used as the final determined temperature (T).
Hot water temperature setting device water heater, characterized in that that. 3. A priority switching source temperature (TM) means for determining a final switching temperature (T) before inputting a priority switching signal.
The hot water supply temperature setting device for a hot water supply device according to claim 2, wherein the hot water supply temperature setting device is held. Comprising a 4. A limiting temperature changing means, (i) when the priority temperature (TY) is restricted temperature (TS) below, is higher than (b) Priority temperature (TY) is restrictive temperature (TS) ,
Change the priority temperature (TY) below the limit temperature (TS)
The limit temperature (TS) is set to the settable upper limit of the priority temperature (TY).
Change to a higher specified temperature (TS ')
The final determined temperature (T) can be set up to the upper limit.
The method according to any one of claims 1 to 3, wherein
Hot water temperature setting device for hot water heater.