JP3607210B2 - Bath thermal insulation - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heat insulating device for a bathtub that keeps the temperature of hot water constant only for a predetermined time in a bathtub for home use or the like.
[0002]
[Prior art]
Conventionally, in general bathtubs for household use, there are many cases of retreating when taking a bath, but in recent years, each person's bathing time has also diversified due to diversification of life time between families, An increasing number of homes have so-called 24-hour baths where the temperature of the hot water is always appropriate and bathing is possible for 24 hours.
[0003]
For example, in this type of prior art bathtub water temperature adjusting device described in Japanese Patent Laid-Open No. 7-167490, a vane pump that sends bathtub water from the suction port to the discharge port and an electric heater that heats the bathtub water are provided. ing. And it is made to float in bath water, the bath water inhaled from the upper suction port with the blade pump is heated with an electric heater, it is made to flow out from the lower discharge port, and bath water is made constant temperature.
[0004]
[Problems to be solved by the invention]
By the way, in the case of this type of 24-hour bath, since the hot water in the bathtub is kept warm for 24 hours, contamination in the bathtub, generation of Legionella spp. For example, it is said that Legionella spp. Will grow in about two weeks, and it is better to prevent the generation of algae and slime by injecting a regular cleaning twice a month and injecting a chlorine-based disinfectant algicide. It has been broken. However, if this bactericidal algicide is used, problems such as mechanical corrosion, skin irritation, chemical odor, and environmental pollution will occur.
[0005]
[Means for Solving the Problems]
Therefore, in order to solve the above-mentioned problem, the present invention includes a heater that keeps the hot water in the bathtub, a built-in timer that sets the warming time of the heater, and a power switch that controls the power supply of the heater, The bathtub is provided with a float switch that enters the on state from the cut state by filling the bathtub with hot water so that the built-in timer is turned on. In this way, the built-in timer is set to start when the float switch is turned on. To switch the built-in timer from the off state to the on state, the float switch is turned off by filling the bathtub with hot water. The hot water cannot be kept once the built-in timer expires, so that the same hot water cannot be used for a long time. Thereby, generation | occurrence | production of Legionella genus microbe, etc. can be prevented effectively.
[0006]
In addition, once the built-in timer is cut off, the hot water in the bathtub is drained and the float switch is turned off, then the hot water is refilled and the float switch is turned on to turn it on. With this configuration, in order to keep the hot water in the bathtub beyond the set time of the built-in timer, the hot water must be removed and reinserted, so that the same hot water can not be used for a long time.
[0007]
Furthermore, if the set time of the built-in timer is set within a range of 24 hours, it will not be possible to keep warm unless the hot water is changed every day, so the use of hot water can be restricted within one day, and Legionella spp. Etc. can be effectively prevented.
[0008]
Further, if the power switch is constituted by a power timer that can set the time, the time can be set within the set time of the built-in timer, and the temperature can be continuously kept.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic diagram of a heat insulation device for bathtubs showing a first embodiment of the present invention, and FIG. 2 is an operation diagram showing the relationship between the bathtub and each switch timer in the heat insulation device for bathtubs. In the first embodiment, the power switch is constituted by a power timer.
[0010]
As shown in FIG. 1, the bathtub heat retaining device 1 includes a heater 4 provided in the bathtub 2 for keeping warm the hot water 3 in the bathtub 2, a built-in timer 5 for setting a time for keeping warm by the heater 4, A power supply timer 6 for controlling the power supply of the heater 4 is provided. The bathtub 2 is filled with hot water 3 to enter the internal timer 5 from a cut-off (hereinafter also referred to as “OFF”) state (hereinafter also referred to as “ON”). A float switch 7 for providing the state is provided. In this embodiment, since the power consumption of the heater 4 is large, a magnet relay 8 for turning on / off the electricity supplied to the heater 4 is provided. The magnet relay 8 and the built-in timer 5 are provided in the control box 9.
[0011]
The heater 4 is an electric heater having various sensors for adjusting the hot water temperature.
[0012]
The built-in timer 5 is such that the contact 52 is turned on when electricity flows through the starter circuit 51, and the contact 52 is turned off when electricity is not flowing. For example, the built-in timer 5 is arbitrarily set within a period of 24 hours. What can be used is used. The settable time of the built-in timer 5 is not limited to 24 hours, but is a time that can suppress the generation of Legionella spp. Or a time that can prevent the stain on the bathtub 2 (for example, 11 hours). It only has to be set.
[0013]
The power timer 6 is configured such that electricity flows through the starting circuit 61, the contact 62 is turned on by an artificial operation, and the contact 62 is turned off when a set time elapses. The power timer 6 preferably has a settable time equal to or less than the settable time of the built-in timer 5. Thereby, the power supply timer 6 can be set within the set time of the built-in timer 5 that turns off the heater 4. Further, by providing the power timer 6 in this way, the temperature of the hot water can be kept constant within the set time.
[0014]
In the magnet relay 8, the contact 82 is turned on when electricity flows through the starting circuit 81, and the contact 82 is turned off when no electricity flows.
[0015]
The heater 4, the built-in timer 5, the power timer 6, the magnet relay 8, and the float switch 7 are connected by wires 11 and 12 connected to a power source 10. One wiring 11 of the power supply 10 is connected to the float switch 7, and the other wiring 12 is connected to the heater 4 via the magnet relay 8. Further, wirings 121, 122, and 123 branched from the wiring 12 are connected to the starting circuit 81 of the magnet relay 8, the starting circuit 51 of the built-in timer 5, and the starting circuit 61 of the power timer 6. The starting circuit 81 of the magnet relay 8 is connected in series with the contact 52 of the built-in timer 5 and the contact 62 of the power timer 6.
[0016]
The float switch 7 is provided so as to turn on / off the heater 4 under the control of the built-in timer 5 and the power supply timer 6. The float switch 7 is configured such that when the hot water 3 is removed, the tip hangs down and the switch is turned off, and when the hot water 3 is applied, the tip is lifted and the switch is turned on. Accordingly, in the state shown in the figure where the hot water 3 is not stretched, the float switch 7 is turned off, and the built-in timer 5 that is turned on when the float switch 7 is turned on is also turned off. Since this figure is an initial state in which the hot water 3 is not applied to the bathtub 2, the power timer 6 is also turned off.
[0017]
The relationship between the state of the hot water 3 of the bathtub 2 in the bathtub heat retaining device 1 described above, the state of the float switch 7, the state of the built-in timer 5, the state of the power timer 6 and the state of the heater 4 is shown in FIG. It is configured as follows. In this example, the set time of the built-in timer 5 is 10 hours.
[0018]
As shown in FIG. 2, when the hot water 3 is filled in the bathtub 2, the float switch 7 is turned on, the built-in timer 5 is turned on, and if the power timer 6 is turned on, the heater 4 is also turned on. This is the only state in which the heater 4 is turned on. If the power timer 6 is OFF even if the built-in timer 5 is ON, the heater 4 is OFF.
[0019]
Even if the float switch 7 is ON, if the built-in timer 5 is OFF, the heater 4 is always OFF regardless of whether the power timer 6 is ON or OFF.
[0020]
On the other hand, when the hot water 3 of the bathtub 2 is removed, the float switch 7 is always OFF, so the built-in timer 5 is also OFF. In this state, the heater 4 is always turned on regardless of whether the power timer 6 is ON or OFF. It becomes OFF.
[0021]
3-12 is drawing which shows an example of the effect | action in the bathtub heat insulating apparatus mentioned above, FIG. 3 is drawing which shows the effect | action in the heat insulating apparatus for bathtubs of FIG. 1, FIG. 4 is drawing which shows the next effect | action of FIG. 5 shows the next action of FIG. 4, FIG. 6 shows the next action of FIG. 5, FIG. 7 shows the next action of FIG. 6, FIG. 8 shows the next action of FIG. FIG. 10 is a drawing showing the next action of FIG. 9, FIG. 11 is a drawing showing the next action of FIG. 10, and FIG. 12 is a drawing showing the next action of FIG. In each figure, (a) is a schematic diagram of the apparatus, and (b) is an operation diagram of each switch. In the following description, an example in which the set time of the built-in timer 5 is 10 hours, the initial set time of the power timer 6 is 7 hours, and the set time of the power timer 6 is shorter than the set time of the built-in timer 5 will be described. .
[0022]
As shown in FIG. 3, in the initial state in which the hot water 3 of the bathtub 2 is removed, the float switch 7 is in an OFF state. In this state, the built-in timer 5 and the power supply timer 6 are also in an OFF state. 8 is also OFF. In this state, since electricity does not flow between the wiring 11 and the wiring 12, the heater 4 is in an OFF state.
[0023]
Next, as shown in FIG. 4, when hot water 3 is applied to the bathtub 2, the float switch 7 is turned on, electricity flows to the start circuit 51 of the built-in timer 5, the contact 52 is connected, and the built-in timer 5 is turned on. become. Thereby, the set time of the built-in timer 5 starts. At this time, electricity also flows through the activation circuit 61 of the power timer 6, but the activation circuit 61 of the power timer 6 does not operate unless the power timer 6 is manually operated (time setting).
[0024]
Next, as shown in FIG. 5, when the time of the power timer 6 is set and turned ON, the contact 62 is connected, and the wiring 124, the contact 62 of the power timer 6 and the contact 52 of the built-in timer 5 are connected. Since electricity flows through the starting circuit 81 of the magnet relay 8, the contact 82 of the magnet relay 8 is turned on, electricity flows through the heater 4, and heat insulation of the hot water 3 starts. In this state, the heater 4 is repeatedly turned on and off by a sensor (not shown) provided in the heater 4 to control the hot water temperature to a set temperature (for example, “42 ° C. ± 2 ° C.”).
[0025]
Next, as shown in FIG. 6, when the set time of the power timer 6 (7 hours in this example) is reached, the contact 62 of the power timer 6 is turned OFF, and the electricity flowing to the starting circuit 81 of the magnet relay 8 is cut off. Therefore, the contact 82 of the magnet relay 8 is turned off and the heater 4 is turned off. In the state of FIG. 6, the built-in timer 5 is still ON.
[0026]
In this state, as shown in FIG. 7, if the power supply timer 6 is turned on again and the contact 62 is communicated, electricity flows again to the start circuit 81 of the magnet relay 8 and the contact 82 is turned on. Is turned on. At this time, for example, it is assumed that the resetting time of the power supply timer 6 is set to 5 hours.
[0027]
Then, as shown in FIG. 8, when the built-in timer 5 reaches a set time (in this example, 10 hours), the contact 52 is turned off. When the contact 52 of the built-in timer 5 is turned off, the electricity flowing through the starting circuit 81 of the magnet relay 8 is cut off, so that the contact 82 is turned off and the heater 4 is turned off. In this state, electricity is flowing through the activation circuit 51 of the built-in timer 5, but the built-in timer 5 is kept off once the set time has elapsed. At this time, the power timer 6 is in an ON state since the resetting time of 5 hours has not yet elapsed.
[0028]
Thereafter, as shown in FIG. 9, when the resetting time (5 hours) of the power timer 6 elapses, the contact 62 of the power timer 6 is turned off and cut off together with the built-in timer 5.
[0029]
Here, as shown in FIG. 10, it is assumed that the power supply timer 6 is turned on again from the state where the built-in timer 5 is once turned off. However, once the built-in timer 5 is turned off, even if the power supply timer 6 is turned on, the contact 52 of the built-in timer 5 is in an off state, so that no electricity flows through the activation circuit 81 of the magnet relay 8. The heater 4 is kept off. That is, once the built-in timer 5 is turned off, the heater 4 cannot be turned on even if the power timer 6 is operated in that state.
[0030]
Next, as shown in FIG. 11, when the hot water 3 of the bathtub 2 is pulled out from the OFF state where the contact 62 of the power timer 6 and the contact 52 of the built-in timer 5 are cut off and the heater 4 is cut off, as shown in FIG. The float switch 7 is turned OFF, and the state shown in FIG.
[0031]
Thus, once the float switch 7 is turned off, the built-in timer 5 is initialized. Next, when the hot water 3 is put on the bathtub 2 and the float switch 7 is turned on, as shown in FIG. The contact 52 can be turned on by electricity flowing through the start-up circuit 51 of the built-in timer 5.
[0032]
As described above, after the built-in timer 5 is once turned off, the hot water 3 is once removed and the float switch 7 is turned off, and then the float switch 7 is turned on again by filling the bathtub 2 with the hot water 3. Otherwise, it cannot be turned on. That is, in order to turn on the built-in timer 5, the float switch 7 cannot be operated from the OFF state to the ON state. Therefore, if the settable time of the built-in timer 5 is set to a time that can suppress the generation of Legionella spp., The same hot water cannot be used for a longer time.
[0033]
In addition, the set time of the built-in timer 5 of the above-described embodiment is an example, and may be appropriately set to a time during which generation of Legionella spp. Further, the set times of the built-in timer 5 and the power supply timer 6 may be set appropriately by the user.
[0034]
FIG. 13: is a schematic diagram of the heat insulating apparatus for bathtubs which shows 2nd Embodiment of this invention. In the second embodiment, a power switch 13 is provided in place of the power timer 6 in the first embodiment described above. The same components as those in the first embodiment described above are denoted by the same reference numerals, and the description thereof is omitted.
[0035]
As shown in the figure, a power switch 13 is provided instead of the power timer 6, and the wiring 124 and the contact 52 of the built-in timer 5 are communicated / blocked by turning on / off a contact 132 provided inside. It is configured as follows. A contact 132 of the power switch 13, a contact 52 of the built-in timer 5, and an activation circuit 81 of the magnet relay 8 are connected in series.
[0036]
According to the bathtub heat insulating device 14 of the second embodiment configured as above, electricity flows into the start-up circuit 51 of the built-in timer 5 by turning on the float switch 7 as in the first embodiment described above, and the contact 52 is turned on. In this state, when the contact 132 of the power switch 13 is turned ON, the wire 124 communicates with the start circuit 81 of the magnet relay 8 through the contact 52 of the built-in timer 5, so that electricity flows. 82 is turned ON and electricity flows to the heater 4. Therefore, if the contact 52 of the built-in timer 5 is turned on by turning on the float switch 7, the hot water 3 can be kept warm by operating the power switch 13.
[0037]
Also, in the case of the bathtub heat insulating device 14 of the second embodiment, after the built-in timer 5 is once turned off, the heater 4 cannot be kept warm even if the power switch 13 is operated. After the float switch 7 is turned off, the built-in timer 5 cannot be turned on unless the float switch 7 is turned on again by filling the bathtub 2 with hot water 3. That is, in order to turn on the built-in timer 5, the float switch 7 cannot be operated from the OFF state to the ON state. Therefore, if the settable time of the built-in timer 5 is set to a time that can suppress the generation of Legionella spp., The same hot water cannot be used for a longer time.
[0038]
The above-described embodiment is an embodiment, and various modifications can be made without departing from the spirit of the present invention, and the present invention is not limited to the above-described embodiment.
[0039]
【The invention's effect】
The present invention is implemented in the form described above, and has the following effects.
[0040]
Once the built-in timer has expired, once the hot water is drained and the float switch is turned off, the hot water cannot be kept unless the built-in timer is turned on with the float switch turned on by refilling the hot water. Therefore, it is possible to configure a bathtub heat insulating device that does not use the same hot water for a long time.
[Brief description of the drawings]
FIG. 1 is a schematic view of a bathtub heat insulating device showing a first embodiment of the present invention.
2 is an operation diagram showing a relationship between a bathtub and each switch / timer in the bathtub heat insulating device of FIG. 1. FIG.
3A and 3B are diagrams showing the operation of the heat insulating device for a bathtub shown in FIG. 1, wherein FIG. 3A is a schematic diagram of the device, and FIG.
4 is a drawing showing the next action of the bathtub thermal insulation device shown in FIG. 3, wherein (a) is a schematic diagram of the device, and (b) is an operation diagram of each switch. FIG.
5 is a drawing showing the next action of the bathtub heat insulating device shown in FIG. 4, wherein (a) is a schematic diagram of the device, and (b) is an operation diagram of each switch. FIG.
6 is a drawing showing the next action of the bathtub heat insulating device shown in FIG. 5, wherein (a) is a schematic diagram of the device, and (b) is an operation diagram of each switch.
7 is a view showing the next action of the heat insulating device for bathtubs shown in FIG. 6, wherein (a) is a schematic view of the device, and (b) is an operation diagram of each switch.
8 is a drawing showing the next action of the bathtub thermal insulation device shown in FIG. 7, wherein (a) is a schematic diagram of the device, and (b) is an operation diagram of each switch.
9 is a drawing showing the next action of the bathtub thermal insulation device shown in FIG. 8, wherein (a) is a schematic diagram of the device, and (b) is an operation diagram of each switch.
10 is a drawing showing the next action of the bathtub heat insulating device shown in FIG. 9, wherein (a) is a schematic diagram of the device, and (b) is an operation diagram of each switch.
11 is a drawing showing the next action of the bathtub heat insulating device shown in FIG. 10, in which (a) is a schematic diagram of the device, and (b) is an operation diagram of each switch.
12 is a drawing showing the next action of the bathtub thermal insulation device shown in FIG. 11, wherein (a) is a schematic diagram of the device, and (b) is an operation diagram of each switch.
FIG. 13 is a schematic view of a heat insulating device for bathtubs showing a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Bath warmer 2 ... Bath 3 ... Hot water 4 ... Heater 5 ... Built-in timer 6 ... Power supply timer 7 ... Float switch 8 ... Magnet relay 9 ... Control box 10 ... Power supply 11, 12 ... Wiring 13 ... Power switch 14 ... Bath warming apparatus

Claims (4)

A heater for keeping hot water in the bathtub, a built-in timer for setting the warming time of the heater, and a power switch for controlling the power supply of the heater are provided. A thermal insulation device for a bathtub provided with a float switch that enters a state where the built-in timer is turned on. Once the built-in timer has been turned off, remove the hot water from the bathtub and turn off the float switch, and then refill the hot water so that it cannot be turned on unless the float switch is turned on. The heat insulating device for bathtubs according to claim 1, which is configured. The bathtub heat-retaining device according to claim 1 or 2, wherein the set time of the built-in timer is set within a set range of 24 hours. The heat-retaining device for a bathtub according to any one of claims 1 to 3, wherein the power switch is configured by a power timer capable of setting time.

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