JP3691161B2 - Bath water insulation system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bathtub water heat-purifying system that retains and purifies bathtub water such as a so-called 24-hour bath. In particular, the present invention relates to a new type of bathtub water heat insulation and purification system in which a bath water heater and a bathtub water purification system are connected.
[0002]
[Prior art]
In recent years, it has been used for many days while purifying the water in the bathtub without throwing it away. For example, there is a so-called 24-hour bath, which has the advantage of contributing to water saving and energy saving in addition to the comfort and convenience of being able to take a bath at any time. Note that the 24-hour bath referred to in this specification is not limited to home use, but includes the same kind of baths such as public baths, hot springs, dormitories and nursing homes. In such a bath, a bathtub water circulation system for circulating and purifying bathtub water is installed. The bathtub water circulation system plays a role of keeping the bathtub water clean by removing dust and dirt in the bathtub water and sterilizing bacteria.
[0003]
Various bacteria are mixed into the bathtub water circulation system from the human body or from the outside. As one of such bacteria, there is Legionella spp. That cause highly fatal Legionella disease. The present inventor previously filed an application for a hot water circulation system for bath water that can also sterilize the Legionella genus and that combines a bath water heater and a bath water purification unit (reference number KP509, May 1996). Filed on the 13th).
[0004]
FIG. 2 is a system diagram showing a configuration of a bath water heat-purifying system according to an embodiment of the earlier application.
The bath water circulation path in the bathtub water heat-reserving circulation system in FIG. 2 enters the bath boiler 15 in the bath 7 → the water inlet / outlet 11 → the return pipe 13 → the bath water heater 3, and the pipe 14 → the pump 17 → Flowing water switch 19 → finned water pipe 23 → pipe 25 → water amount adjusting valve 27 → reheating thermistor 29 → exiting reheating boiler 15, and entering piping 31 → purification unit 5, piping 33 → pump 35 → piping 37 → ultraviolet lamp 41 → three-way valve 43 → pipe 45 → filter tank 49 → pipe 51 → three-way valve 53 → pipe 55 → outward from the purification unit 5 and forward pipe 57 → transmission / reception port 11 → tub 7.
[0005]
The pump 17 in the reheating boiler 15 is for pushing the bathtub water into the finned water pipe 23. The running water switch 19 is a sensor that prevents the reheating boiler 15 from being idle. The finned water pipe 23 has a large number of fins (fins) on the outer surface thereof, receives the flame of a gas burner or combustion exhaust gas, and heats the water in the pipe. Gas is sent to the gas burner 21 from a gas proportional valve 20 (fuel flow rate control means). A water amount adjustment valve 27 (tub water flow rate control means) on the outlet side of the finned water pipe 23 controls the flow rate of the bathtub water passing through the reheating boiler 15. The chasing thermistor 29 detects the bath water temperature at the chasing boiler outlet side. In addition, the gas proportional valve 20 and the water amount adjustment valve 27 may be provided side by side, or only one of them may be provided.
[0006]
In particular, the reheating temperature control in the reheating boiler 15 when performing high temperature renewal for sterilization is performed as follows. At this time, the temperature on the outlet side of the reheating boiler 15 (reheating temperature) needs to be 65 ° C. or higher. One means for achieving this is the water amount adjustment valve 27. For example, when the rated gas flow rate is supplied to the gas burner 21, the water temperature adjustment valve 27 can be adjusted in advance so that the bath water temperature can be 65 ° C or higher (the temperature in the bath is a standard temperature, for example, 40 ° C). Keep it.
[0007]
The second method of controlling the reheating temperature is a method of controlling the amount of gas supplied to the gas burner 21. In this example, the gas flow rate is controlled by the gas proportional valve 20 so that the bath water temperature in the reheating thermistor 29 is 65 ° C. or higher.
[0008]
A hot water supply boiler 70 accommodated in the bath water heater 3 along with the reheating boiler 15 supplies hot water to a shower, a faucet in the bathroom, a washroom, a kitchen, and the like. That is, water enters from the pipe 71 and proceeds in the order of the water amount sensor 73 → the finned water pipe 77 → the hot water supply pipe 79 → the hot water supply pipe 83. The pipe 81 supplies water for the slimming mixing. The pipe 82 is for hot water supply to the bathtub 7 and is opened and closed by a pouring electromagnetic valve 84.
[0009]
A portion other than the bath water heater 3 of the bathtub water heat-reserving circulation system in FIG. 2 will be described. The water inlet / outlet 11 has a rough filter, and large garbage such as hair is caught here. The ultraviolet lamp 41 in the bathtub water purification unit 5 sterilizes the bathtub water by irradiating the bathtub water with ultraviolet rays. The filter tank 49 has a built-in filter material (mesh, beads, etc.) and removes small dust, dirt, oil, etc. in the bath water.
[0010]
Three-way valves 43 and 53 are provided around the filtration tank 49. By switching these three-way valves, the filtration tank 49 can be back-washed (the flow of water is the pipe 39 → the three-way valve 53 → the pipe 51 → the filtration tank 49 → the pipe 45 → the three-way valve 43 → the pipe 47). Yes. Ports painted black with a three-way valve are closed, and white ports are open.
[0011]
2 is controlled by a controller 91. At the time of high temperature reheating, the controller 91 is connected to the pump 17 in the reheating boiler 15, the gas burner 21, the gas proportional valve 20 (or the water amount adjusting valve 27) through the controller 95 of the bath water heater and the controller of the purification unit 93. In addition, the pump 35 and the three-way valves 43 and 53 in the purification unit 5 are controlled. Each controller is connected by communication means.
[0012]
[Problems to be solved by the invention]
By the way, in the conventional general bath water heater, the air-blowing prevention confirmation sequence at the start of reheating shown in FIG. 3 was performed. In this sequence, when the pump is stopped (OFF), it is confirmed that the bath water switch is turned off every 30 minutes (101). If the running water switch OFF can be confirmed, the running water switch is regarded as normal and the pump can be started (ON) (102).
[0013]
After the pump is turned on, it is checked whether or not the bath temperature is equal to or lower than the set temperature (103). If NO, it is determined that no additional heating is required, and the process returns to the main routine. After confirming the running water switch ON (104), the ignition operation (105) of the reheating boiler was performed and the reheating (106) was started. Note that if the running water switch ON could not be confirmed in step 104 described above, an error message was displayed.
[0014]
However, when the bathtub water heat-retaining circulation system in which the purification unit 5 and the water heater 3 are connected as shown in FIG. 2 is assembled, the flowing water switch 19 is always ON during the purification of the bathtub water. It has been found that it is not possible to carry out the sequence for confirming that the fired boiler is free of air.
[0015]
The present invention provides a bath water heat-purifying system that retains and purifies bath water such as a so-called 24-hour bath, and is a new type of bath water heat-purifying system that connects a bath water heater and a bath water purifying system. With the goal.
[0016]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, a bathtub water insulation and circulation system related to the present invention has a pipeline for circulating bathtub water, and a gas or oil-fired bathtub water reheating boiler and a bathtub provided in the pipeline A bath water insulation and purification system comprising a filtration tank for filtering water; a bypass pipe in which a running water switch and a solenoid valve are arranged in series to the reheating boiler, and the solenoid valve being normally closed; It is characterized in that a controller is provided which starts the reheating heating after confirming that the water flow switch is turned from OFF to ON when the solenoid valve is opened when entering the firing sequence.
A bypass pipe for the running water switch was provided so that the operation of the running water switch could be confirmed regardless of the bathtub water purification and circulation operation.
The bathtub water insulation circulation system of the present invention has a pipeline for circulating bathtub water, and includes a gas or petroleum-fired bathtub water reheating boiler provided in the pipeline and a filtration tank for filtering the bathtub water. A bath water insulation and purification system; the reheating boiler is provided with a water flow switch and a controller that periodically stops the pump during the bath water circulation purification operation and confirms that the water flow switch is OFF. It is characterized by that.
Another bathtub water insulation and circulation system according to the present invention has a pipeline for circulating bathtub water, a gas or oil-fired bathtub water reheating boiler provided in the pipeline, and a filtration tank for filtering the bathtub water. A bath water heat insulation and purification system comprising: a reheating boiler that detects a flow of water flowing in a heating water pipe of the reheating boiler, a pump having a variable rotation speed, and a rotation speed of the pump periodically. And a controller that checks the output of the flow rate sensor instead.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a system diagram showing a bathtub water heat-reserving circulation system according to an embodiment of the present invention. The part shown with the same code | symbol as FIG. 2 in the figure is a part similar to the bathtub water heat insulation circulation system of FIG.
1 is that a bypass pipe 14 'is provided next to the pipe 14 in front of the finned water pipe 23 of the reheating boiler 15. A flow switch 19 and a solenoid valve 18 are connected in series in the bypass line 14 '. And only at the time of confirming OFF of the flowing water switch 19, the solenoid valve 18 is closed and the water which flows into the flowing water switch 19 part is interrupted | blocked.
[0018]
As a means for confirming such a running water switch OFF, the piping system remains the same as in FIG. 2, and the pump is periodically stopped during the bath water circulation purification operation to confirm that the running water switch is turned off. Good. That is, stop the pumps 17 and 35 (either one may be omitted) periodically or before recharging, and confirm that the running water switch of the pipeline is turned off in conjunction with this. It is.
[0019]
In addition, it has a flow rate sensor that detects the flow of water flowing in the heating water pipe of the reheating boiler, and furthermore, a pump with a variable rotation speed and a check of the output of the flow rate sensor by periodically changing the rotation speed of this pump. You may go.
[0020]
【The invention's effect】
As is apparent from the above description, the bathtub water heat-reserving circulation system of the present invention is a new type of bathtub water that connects a bath water heater and a bathtub water purification system, which can ensure the safety of reheating a reheating boiler. A thermal insulation purification system can be provided.
[Brief description of the drawings]
FIG. 1 is a system diagram showing a bathtub water heat-reserving circulation system according to an embodiment of the present invention.
FIG. 2 is a system diagram showing a configuration of a bathtub water heat-purifying system according to the previous application.
FIG. 3 is a flowchart showing an airing prevention sequence in a conventional general bath water heater.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Bath water heat retention purification system 3 Bath water heater 5 Purification unit 7 Bath 9 Bath water circulation pipe 11 Transmission / reception port 13 Return pipe 14 Pipe 14 'Bypass pipe 15 Reheating boiler 17 Pump 18 Solenoid valve 19 Flow water switch 20 Gas proportional valve 21 Gas burner 23 Filled water pipe 25 Piping 27 Water flow control valve 29 Reheating thermistor 31 Piping 33 Piping 35 Pump 37 Piping 39 Piping 41 Ultraviolet sterilization lamp 43 Three-way valve 45 Piping 47 Piping 49 Filtration tank 50 Electric heater 51 Piping 53 Three-way valve 55 Piping 57 Piping 70 Hot water boiler 71 Water supply pipe 73 Water amount sensor 75 Burner 77 Filled water pipe 79 Hot water supply pipe 81 Water supply pipe 82 Hot water supply pipe 83 Hot water supply pipe 84 Hot water solenoid valve 91 General controller 93 Purification unit controller 95 Water heater controller

Claims (4)

A bath water heat and purification system comprising a pipeline for circulating bathtub water, and comprising a gas or oil-fired bathtub water reheating boiler and a filtration tank for filtering the bathtub water provided in the pipeline;
The reheating boiler is provided with a running water switch and a controller for periodically stopping the pump during the bath water circulation purification operation and confirming that the running water switch is turned off. system. 2. The bathtub water insulation and circulation system according to claim 1, wherein a controller is provided to stop the bathtub water circulation pump and confirm that the running water switch is turned off once the reheating sequence is entered. A bath water heat and purification system comprising a pipeline for circulating bathtub water, and comprising a gas or oil-fired bathtub water reheating boiler and a filtration tank for filtering the bathtub water provided in the pipeline;
The reheating boiler detects the flow of water flowing through the heating water pipe of the reheating boiler, a pump having a variable rotation speed, and periodically checks the output of the flow rate sensor by changing the rotation speed of the pump. A bath water heat and circulation system comprising a controller. The above-mentioned boiler is installed in the bath water heater,
The bathtub water insulation and purification system according to any one of claims 1 to 3, wherein the filtration tank is provided in a bathtub water purification unit.

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