JP3469451B2 - Bath water heater - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bath water heater having a function of supplying high-temperature water to a bathtub. FIG . 8 is a system configuration diagram showing a conventional bath water heater of this type. In FIG . 8 , 1 is a pressure reducing valve for reducing the pressure of water supplied from a water source, 2 is a hot water storage tank for storing water or hot water, 3 is a heating element for boiling water in the hot water storage tank 2, and 4 is hot water storage. A boiling water temperature sensor for detecting the temperature of water in the tank 2;
Is a relief valve for releasing hot water whose volume has been expanded by boiling, 6 is an electric hot water mixing valve for mixing hot water and water in the hot water storage tank 2 at an appropriate temperature, and 7 is a correction valve for the electric hot water mixing valve 6. A hot water supply temperature sensor, 8 is a bathtub provided with a pipe connection adapter 9, 11 is an electromagnetic valve for opening and closing a hot water supply circuit to the bathtub 8, 12 is a bathtub hot water supply flow rate sensor for measuring the amount of hot water supply to the bathtub 8, and 13 is a bathroom. Is a high-temperature hot water switch provided on the remote controller 13, and 15 is a control section for controlling the whole. Next, the operation of the conventional bath water heater will be described. First, the water supplied from the water source is reduced in pressure by the pressure reducing valve 1 and flows into the hot water storage tank 2. Hot water tank 2 is always full of water or hot water. When electric power is supplied to the heating element 3 using electric power or the like at midnight, the water in the hot water storage tank 2 is heated. The boiling water temperature of the hot water storage tank 2 is set in advance by a remote controller installed in a kitchen (not shown), and the set boiling water temperature (for example, 90 ° C.) is measured by the boiling water temperature sensor 4.
Is detected, the control unit 15 stops the power supply to the heating element 3. While heating, the water in the hot water tank 2 expands,
The expanded water is drained from a relief valve 5 that functions as a safety device. The temperature of hot water supplied to the bathtub 8 is set in advance by a remote controller 13 installed in the bathroom. The temperature of the hot water drops after a predetermined time has passed since the bathtub 8 was filled with water, but the temperature of the hot water can be raised to a desired temperature by so-called high-temperature hot water supply that supplies high-temperature water. In a conventional bath water heater, a high-temperature hot water supply operation is performed as follows. When the high-temperature hot water supply switch 14 is pressed by the high-temperature hot water supply remote controller 13 and a high-temperature hot water supply command is issued, the control unit 15 sets the temperature detected by the hot water supply temperature sensor 7 to a high temperature (for example, 60 ° C.). The electric hot water mixing valve 6 is controlled as described above, and the electromagnetic valve 11 is opened to start hot water supply to the bathtub 8 via the adapter 9. After the high-temperature hot water supply into the bathtub 8 is started, the integrated flow rate is counted by the bathtub hot water supply flow rate sensor 12, and a predetermined amount (for example, 2
0L), the solenoid valve 11 is closed to complete the hot water filling. [0008] The conventional bath water heater is
As described above, when the high-temperature hot water switch is pressed, high-temperature hot water is instantaneously supplied. Therefore, even when a child or the like accidentally presses the high-temperature hot water switch 14 of the remote controller 13, the high-temperature water remains in the bathtub 8. Will be supplied. [0009] If hot water is already filled in the bathtub 8, even if high-temperature water is supplied, the hot water is mixed with the hot water in the bathtub 8 to lower the hot water temperature. When he came out, he was surprised and escaped, hitting somewhere and possibly causing injury. When a child or the like is playing in the bathtub 8 with no hot water in the bathtub 8, the remote controller 13
When the high-temperature hot water switch 14 is pressed, high-temperature water is supplied to the bathtub 8 and the hot water may be caught on a foot and burned. [0011] Regarding the above points, the manufacturer calls attention to the user in an instruction manual or the like, but it is important to further improve safety. A technical object of the present invention is to further improve the safety of hot water. [0013] A bath water heater according to the present invention starts supplying high-temperature water immediately after pressing a high-temperature hot water supply switch for a certain period of time after completion of filling the bath tub. When a certain time has passed from the elapse of time after the completion of the filling, and a notification that a certain time has passed from the elapse of time after the completion of the filling, when a high-temperature hot water switch operation of the remote controller is pressed for several seconds, Hot water switch pressing time determination means for enabling supply. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First, before describing the embodiments, the present invention will be described.
The development process and basic principles of Ming will be described. Figure 1 is wind
System configuration diagram showing a Lu water heater, FIG. 2 is a configuration diagram of the operation unit of the bathroom installation of the remote control, FIG. 3 is a flow chart for explaining the high temperature feed water operation, FIGS. 1 and 2
In the drawings, portions corresponding to the above-described conventional example (FIG. 8) are denoted by the same reference numerals. In FIG. 1, reference numeral 1 denotes a pressure reducing valve for reducing the pressure of water supplied from a water source, 2 denotes a hot water storage tank for storing water or hot water, 3 denotes a heating element for boiling water in the hot water storage tank 2, and 4 denotes hot water storage. A boiling water temperature sensor for detecting the temperature of water in the tank 2;
Is a relief valve for releasing hot water whose volume has been expanded by boiling, 6 is an electric hot water mixing valve for mixing hot water and water in the hot water storage tank 2 at an appropriate temperature, and 7 is a correction valve for the electric hot water mixing valve 6. A hot water supply temperature sensor, 8 is a bathtub provided with a pipe connection adapter 9, 11 is a solenoid valve for opening and closing a hot water supply circuit to the bathtub 8, 12 is a bathtub hot water supply flow rate sensor for measuring the amount of hot water supplied to the bathtub 8, and 13A is a bathroom. , A high-temperature hot water switch provided on the remote controller 13A, 16
Is a hot water filling switch, and 21 is a control unit for controlling the whole.
have. Hot water switch pressing time determination means 22
When the high temperature hot water switch 14 of the remote controller 13A is pressed, the pressing time is counted and counted for several seconds (for example, 3 seconds).
It has a function of determining whether or not it has been pressed for a while, and if it has been pressed for 3 seconds, has a function of permitting the supply of high-temperature water. As shown in FIG. 2, the remote controller 13A includes an operation button 16a of the bath water filling switch 16, an operation button 14a of the hot water filling switch 14, a bath water filling lamp 23 which is lit during bath water filling, and a high temperature bath lamp 23. High-temperature hot-water lamp 24 that lights up during hot water supply, and operation buttons 25a and 25b of hot-water supply temperature setting switches for adjusting the hot-water supply temperature to bathtub 8
And operation buttons 26a and 26b of a hot water supply amount setting switch for adjusting the amount of hot water supplied to the bathtub 8, and a display unit 27 for displaying a hot water temperature setting value and a hot water amount setting value. Next, the operation of the bath water heater will be described. In this case, the water in the hot water storage tank 2 is already heated by using midnight power or the like, and the temperature of the hot water for the bath 8 is set to, for example, 42 ° C. by operating buttons 25a and 25b of a hot water supply temperature setting switch. The amount of hot water to be supplied to the hot water 8 is, for example, 200 by operating buttons 26a and 26b of the hot water supply amount setting switch.
L, respectively, and the temperature of the hot water in the bathtub 8 is set to, for example, 60 ° C., and the amount of the hot water in the bathtub 8 is set to, for example, 20 L each time. The setting of the hot water temperature and the hot water amount at the time of hot water filling and the hot water temperature and the hot water amount setting at the time of hot water supply are performed by switching the mode by a mode switching button (not shown).
Operation buttons 25a, 25b of the same hot water temperature setting switch
And the operation buttons 26a and 26b of the hot water supply setting switch. Hot watering operation When the operation button 16a of the hot water filling switch 16 is pressed by the bathroom remote control 13A and a hot water filling command is issued, the control unit 21
Indicates that the temperature detected by the hot water supply hot water temperature sensor 7 is the bathroom remote control 13A.
In addition to controlling the electric hot water mixing valve 6 so that the hot water temperature (42 ° C.) set in the step (1), the electromagnetic valve 11 is opened and the hot water is started to the bathtub 8 via the adapter 9.
After the filling of the bathtub 8 is started, the integrated flow rate is counted by the bathtub hot water supply flow rate sensor 12, and the filling is continued until the bathing water amount (200 L) preset by the bathroom remote controller 13A is reached. When the accumulated flow reaches the set hot water amount, the electromagnetic valve 11 is closed to complete the hot water filling. Next, the operation of high-temperature hot water supply performed when the temperature of hot water in the bathtub 8 decreases will be described with reference to the flowchart of FIG. First, the operation button 14a of the hot water heater switch 14 is pressed by the bathroom remote controller 13A to start the hot water heater operation. When the operation button 14a of the hot water supply switch 14 is pressed, the control unit 21 checks whether the high temperature water supply switch 14 is pressed (step 10).
1) If it is pressed, the hot water switch pressing time determination means 22 counts the pressing time of the high temperature hot water switch 14 and determines whether or not the hot water hot water switch 14 has been pressed for several seconds (for example, 3 seconds) ( If it has not passed for 3 seconds in the pressed state, the process returns to step 101, and if it has passed for 3 seconds, the hot water filling operation is performed (step 10).
3). The hot water bath operation is as follows. Hot water supply operation When a hot water supply command is output from the hot water switch pressing time determination means 22, the control unit 21 causes the hot water supply temperature sensor 7
The electric hot water mixing valve 6 is controlled so that the detected temperature of the hot water becomes 60 ° C., and the electromagnetic valve 11 is opened to start hot water supply to the bathtub 8. After the high-temperature hot water supply to the bathtub 8 is started, the integrated flow rate is counted by the bathtub hot water supply flow rate sensor 12 and 2
When the temperature reaches 0 L, the solenoid valve 11 is closed to complete the hot water filling. In this bath water heater , high-temperature water can be supplied only when the operation of the high-temperature hot water switch on the remote controller is pressed for several seconds, so that erroneous operation by a child or the like is prevented. Can improve the safety of hot water. Also, since this safety measure can be constructed by software, the cost can be reduced. Although the hot water switch pressing time determination means 22 has been described as being provided in the control unit 21 as an example, this may be provided in the bathroom remote controller 13A. FIG. 4 also illustrates the basic principle of the present invention .
System configuration diagram showing a bath water heater, FIG. 5 is a flow chart for explaining the high-temperature feed water operation, FIG. 4
Among, the portion corresponding to Figure 1 of the previous mentioned are denoted by the same reference numerals. Incidentally, when the description reference is made to Figure 2 of the previous mentioned. This bath water heater has a control unit 21
After the completion of the filling of the hot water, the supply of the high-temperature water by operating the high-temperature hot water supply switch 14 is accepted only for a certain period of time (for example, 6 hours), and at other times, the acceptance of the high-temperature water supply is refused. A post-elapsed time determination means 32 is provided, and other configurations are the same as those described in the basic principle.
(FIGS. 1 to 3) . Next, the operation of the bath water heater will be described. In this case, too, the water in the hot water storage tank 2 is already heated by using the electric power at midnight, and the temperature of the hot water for the bath 8 is set to, for example, 42 ° C. by operating the operation buttons 25a and 25b of the hot water temperature setting switch. The amount of hot water to be supplied to the hot water 8 is, for example, 200 by operating buttons 26a and 26b of the hot water supply amount setting switch.
L, respectively, and the temperature of the hot water in the bathtub 8 is set to, for example, 60 ° C., and the amount of the hot water in the bathtub 8 is set to, for example, 20 L each time. With respect to the water filling operation, the foregoing groups
The description of the principle is omitted because it is the same as that of the description of the present principle (FIGS. 1 to 3). Here, the operation of hot water supply performed mainly when the temperature of the hot water in the bathtub 8 is lowered will be described with reference to the flowchart of FIG. It is explained based on. First, the operation button 14a of the hot water hot water switch 14 is pressed by the bathroom remote controller 13A to start the hot water hot water operation. When the operation button 14a of the hot water bath switch 14 is pressed, the control unit 21 checks whether or not the filling of the bathtub 8 has been completed (step 201). It is checked whether it is within 6 hours later (step 202).
It is determined whether the high-temperature hot water switch 14 has been pressed (step 203). If the switch has not been pressed, the process returns to step 202. If the high-temperature hot water switch 14 has been pressed, the operation of the high-temperature hot water supply is performed (step 204). The hot water bath operation is as described above. If it is determined in step 201 that the filling of the bathtub 8 has not been completed, the process is terminated. Further, if it is determined in step 202 that 6 hours have passed since the completion of filling, the process is also terminated. Thus, in this bath water heater,
The hot water supply by operating the high temperature hot water switch 14 is accepted only for a certain period of time (6 hours) after the completion of the hot water supply to the bathtub 8, and the other time, the hot water supply is refused. the rear elapsed time determining means 32 set Ketei
Therefore, it is possible to prevent high-temperature hot water in a state where there is no hot water in the bathtub 8, and it is possible to improve safety of the high-temperature hot water. Also, since this safety measure can be constructed by software, the cost can be reduced. Here, an example has been described in which the control unit 21 is provided with the elapsed time determination unit 32 after completion of filling, but this may be provided in the bathroom remote controller 13A. that's all
Is an explanation of the basic principle of the present invention. The present invention is shown in FIGS.
The functions described in FIG. 3 and the functions described in FIGS.
It has both functions. Embodiment FIG. 6 is a system configuration diagram showing a bath water heater according to the present invention .
FIG. 7 is a flowchart for explaining the high-temperature hot water supply operation. In FIG. 6, FIG . 7, FIG. 3, FIG.
It is denoted by the same reference numerals to the corresponding portions. Incidentally, when the description reference is made to Figure 2 of the previous mentioned. The bath water heater of the present embodiment comprises a controller 21
After completion of the filling of the bath 8, a certain time (for example,
During the time period, after the hot water filling switch 14 is pressed, the hot water supply is started immediately, and after the completion of the filling, the elapsed time determining means 32A and the fixed time after the hot filling, the predetermined time (6 hours). When the operation button 14a of the high-temperature hot-water switch 14 of the remote controller 13A is pressed for several seconds (for example, three seconds) after receiving the notification of the lapse of time, a hot-water switch press-down time determining means for enabling supply of high-temperature water. 22A, and the other configuration is the same as that described in the above basic principle . Next, the operation of the bath water heater of this embodiment will be described. In this case, too, the water in the hot water storage tank 2 is already heated by using electric power at midnight, and the temperature of the hot water to the bathtub 8 is controlled by operating buttons 25a and 25b of a hot water supply temperature setting switch.
For example, the temperature of the hot water in the bathtub 8 is set to, for example, 42 deg. C, and the amount of hot water in the bathtub 8 is set in advance to, for example, 200 L by the operation buttons 26a, 26b of the hot water supply amount setting switch. It is assumed that the amount of hot water in the bathtub 8 is preset to, for example, 20 L per time. For the filling operation,
The description is omitted here because it is the same as that described in the above basic principle, and here, the operation of the hot water supply performed when the temperature of the hot water in the bathtub 8 is lowered will be described based on the flowchart of FIG. First, the operation button 14a of the hot water switch 14 is pressed by the bathroom remote controller 13A to start the hot water operation. When the operation button 14a of the high-temperature hot water switch 14 is pressed, the control unit 21 checks whether or not the filling of the bathtub 8 has been completed (step 301). It is checked whether it is within 6 hours from now (step 302), and if it is within 6 hours,
It is determined whether the high-temperature hot water switch 14 has been pressed (step 303). If the switch has not been pressed, the process returns to step 302. If the high-temperature hot water switch 14 has been pressed, the hot water hot water supply operation is performed (step 304). The hot water bath operation is as described above. If it is determined in step 301 that the filling of the bathtub 8 has not been completed, the process is terminated. If it is determined in step 302 that six hours have passed since the completion of hot water filling, it is determined whether the high-temperature hot water switch 14 has been pressed (step 30).
5) If pressed, the hot water switch pressing time determination means 22A counts the pressing time of the high temperature hot water switch 14 to determine whether or not the hot water hot water switch 14 is pressed for 3 seconds (step 306). If 3 seconds have not elapsed in the state where the operation has been performed, the process returns to step 305, and if 3 seconds have elapsed, the process proceeds to step 304, and the operation of hot water bath is performed. As described above, the bath water heater of the present embodiment is
During a certain period of time (6 hours) after the completion of filling the bathtub 8, the high-temperature hot water supply switch 14 is started immediately after the hot water supply switch 14 is pressed, and a certain period of time (6 hours) after the completion of the filling. If the operation button 14a of the hot water bath switch 14 is kept pressed for several seconds (3 seconds) or more even after the elapse, the hot water bath operation can be performed.
It is possible to prevent high-temperature hot water in a state where there is no hot water therein, and further prevent erroneous operation by a child or the like, thereby further improving the safety of the high-temperature hot water. Also, since this safety measure can be constructed by software, the cost can be reduced. In the above description, the control unit 21 is provided with the elapse of time after completion of hot water filling means 32A and the hot water switch pressing time judgment means 22A, but this is provided in the bathroom remote controller 13A. Is also good. As described above , according to the present invention, the bath
After the bath is filled with water, a high-temperature bath
If you start hot water supply immediately after pressing the switch,
Even if a certain period of time has passed since the completion of hot water filling,
When the high-temperature hot water switch operation of the condenser is pressed for several seconds
To supply high-temperature water to the bathtub.
It can prevent high-temperature hot water in the absence of hot water.
In addition, erroneous operation by a child or the like can be prevented beforehand, and the safety of hot water can be further improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a system configuration diagram of a bath water heater for explaining a basic principle of the present invention. FIG. 2 is a configuration diagram of an operation unit of a remote controller of a bath water heater for explaining a basic principle of the present invention . FIG. 3 is a flowchart of a hot water supply operation of a bath water heater for explaining a basic principle of the present invention . FIG. 4 is a system configuration diagram of a bath water heater for explaining a basic principle of the present invention. FIG. 5 is a flowchart of a hot water supply operation of a bath water heater for explaining a basic principle of the present invention . 6 is a system configuration diagram of a bath water heater according to the present onset Ming embodiment. FIG. 7 is a flowchart of a hot water supply operation of the bath water heater according to the present embodiment . FIG. 8 is a system configuration diagram of a conventional bath water heater. [Description of Signs] 8 bathtub, 13A remote control , 14 high temperature hot water switch, 16 bath water filling switch, 22, 22A hot water switch pressing time determination means, 32, 32A elapsed time determination after completion of water filling .

Continuation of the front page (72) Inventor Hidetoshi Owada 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Tadashi Masuda 3-2-2 Nakanoshima, Kita-ku, Osaka Kansai Electric Power Company (72) Inventor Yoshihide Mori 3-2-2, Nakanoshima, Kita-ku, Osaka-shi Kansai Electric Power Co., Inc. (72) Inventor Tatsuya Okui 3-2-2, Nakanoshima, Kita-ku, Osaka Kansai Electric Power Co., Inc. (56) References JP-A-9-229473 (JP, A) JP-A-9-239138 (JP, A) JP-A-8-189694 (JP, A) JP-A-61-110646 (JP, A) -27992 (JP, U) Utility model registration 2544339 (JP, Y2) Utility model registration 2512606 (JP, Y2) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24H 1/00 602

Claims (1)

(57) [Claims] [Claim 1] Hot water is supplied to a bathtub by operating a bath hot water switch of a remote controller, and supply of high temperature water to the bathtub by operating a high temperature hot water switch of the remote controller. In the bath water heater in which the hot water supply to the bathtub is completed, for a certain period of time, after the hot water supply switch is pressed, the hot water supply is started immediately after completion of the hot water filling, and an elapsed time determination means; When the operation of the high-temperature hot water switch on the remote controller is pressed for several seconds after receiving the notification that the predetermined time has passed from the elapsed time determination means after completion of the hot water filling, the hot water switch pressing time for enabling the supply of high-temperature water. A bath water heater comprising: a determination unit.