JP3903507B2 - Bath water heater - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a bath water heater that enables hot water supply / bath chasing and purification / sterilization of bathtub water.
[0002]
[Prior art]
A conventional bath water heater has a configuration as shown in FIG.
[0003]
In the figure, water passes through a water amount sensor 1 and a water temperature sensor 2 from a water inlet, absorbs heat by a hot water supply heat exchanger 3, passes through a hot water supply sensor 4 and a water amount control valve 5, and is discharged from a hot water outlet. Gas passes through the hot water supply solenoid valve 6 and the hot water supply proportional valve 7 from the gas inlet, and is combusted by the hot water burner 8.
[0004]
The bath water is circulated with the bath connection adapter 19, the return passage 13, the water level sensor 14, the switching three-way valve 15, the bath sensor 9, the water flow switch 10, the bath heat exchanger 11, the forward passage 12, and the bath connection adapter 19 by the circulation pump 32. To do. When the hot water temperature detected by the bath sensor 9 decreases, the gas that has passed through the bath solenoid valve 16 and the bath proportional valve 17 burns in the bath burner 18. And the heat generated here is absorbed by the bath heat exchanger 11, and the bath water is reclaimed.
[0005]
Hot water that has been absorbed by the hot water supply heat exchanger 3 passes through the hot water supply sensor 4 and the water amount control valve 5, and passes through the hot water electromagnetic valve 20, the edge cut valve 21, the outward passage 12, and the bath return passage 13. Go through and enter the bathtub from the bath connection adapter 19.
[0006]
[Problems to be solved by the invention]
However, in the above-mentioned conventional bath water heater, it is very unclean for multiple people to take a bath or use the water in the tub continuously because of the dirt accumulated in the tub and the dirt of the hot water. In order to clean it, the hot water in the bathtub must be changed and the bathtub must be cleaned, which has the problem of being very uneconomical and laborious.
[0007]
[Means for Solving the Problems]
The present invention includes a return passage and an outward passage for circulating bath water, a circulation pump disposed in the return passage, a bath heat exchanger for heating bath water supplied from the return passage, and an entrance and an exit of the bath heat exchanger Bypass passage, bypass three-way valve that switches bath water circulation path to bath heat exchanger side or bypass passage side, upper forward passage and lower forward passage connected to passage switched by bypass three-way valve, and upper forward passage A drainage three-way valve connected to the passage and switching the passage with the drainage side, and a filtration tank having an aluminum electrode connected between the forward and reverse three-way valve connected to the lower forward passage and switching the passage with the bathtub side purification operation mode, as bath water passes through the filtration tank, the bypass three-way valve to the upper forward passage side, the drainage three-way valve to the filtration tank side, switch the respective passages forward and reverse three-way valve to the tub side In the high-temperature sterilization operation mode, the bypass three-way valve is switched to the bath heat exchanger side, the drainage three-way valve is switched to the filter tank side, and the forward and reverse three-way valve is switched to the bathtub side so that the bath water passes through the filter tank. The bath water is heated to a high temperature with a bath heat exchanger .
[0008]
According to the above-described invention, dirt and bacteria accumulated in the bathtub are aggregated by bonding with aluminum hydroxide by energizing the aluminum electrode in the filtration tank, and the aggregated foreign matter is removed with the filter medium in the filtration tank. Thus, the bath water can be always cleaned, and the germs aggregated in the filtration tank can be sterilized at high temperature, so that cleanliness can be maintained even when a plurality of people bathe in succession.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a bath in which hot water is supplied to a bathtub through a hot water solenoid valve branched from a hot water outlet of a hot water heat exchanger for exchanging heat of the feed water by heating the burner, and the circulating bath water is heated by the burner. A bath water heater having a reheating operation to heat up to a predetermined temperature by exchanging heat with a heat exchanger and a purifying operation for removing dirt by passing the circulating bath water through a purifying means, and circulating the bath water A return passage and a forward passage, a circulation pump arranged in the return passage, a bath heat exchanger for heating the bath water supplied from the return passage, a bypass passage for bypassing the inlet and outlet of the bath heat exchanger, and a bath Connected to the bypass three-way valve that switches the bath water circulation path to the heat exchanger side or bypass passage side, the upper forward passage and the lower forward passage connected to the passage switched by the bypass three-way valve, and the upper forward passage And a filter tank with connected aluminum electrode between the forward and reverse three-way valve drainage way valve to perform the path switching between the drainage side and is connected to the lower forward passage performs path switching between the bathtub side, the purification operation mode In order to allow the bath water to pass through the filtration tank, the bypass three-way valve is switched to the upper outbound passage side, the drainage three-way valve is switched to the filtration tank side, and the forward and reverse three-way valve is switched to the bathtub side. Switch the passage to the bath heat exchanger side, the drainage three-way valve to the filtration tank side, and the forward and reverse three-way valve to the bathtub side so that the bath water passes through the filtration tank, and the bath water is bathed. Heated to a high temperature with a heat exchanger .
[0010]
And the dirt and hot water accumulated in the bathtub is aggregated by energizing the aluminum electrode in the filtration tank, and the aggregated foreign matter is removed by the filter medium in the filtration tank, so that the bathtub water can be always cleaned. Since the germs aggregated in the filtration tank can be sterilized at a high temperature, cleanliness can be maintained even when a plurality of people continuously bathe or use the water in the bathtub.
[0011]
(Example)
Hereinafter, the bath water heater in the Example of this invention is demonstrated using drawing. In addition, the same number is attached | subjected and demonstrated about the same component as the past.
[0012]
In FIG. 1, water passes through a water amount sensor 1 and a water temperature sensor 2 from a water inlet, absorbs heat by a hot water supply heat exchanger 3, passes through a hot water supply sensor 4 and a water amount control valve 5, and is discharged from a hot water outlet. Gas passes through the hot water supply solenoid valve 6 and the hot water supply proportional valve 7 from the gas inlet, and is combusted by the hot water burner 8.
[0013]
Bath water is supplied by a circulation pump 32 to a bath connection adapter 19, a return passage 13, a water level sensor 14, a switching three-way valve 15, a bath sensor 9, a water flow switch 10, a bypass three-way valve 22, a bath heat exchanger 11, an upper outgoing passage 23, It circulates with the drainage three-way valve 24, the filter tank 27 provided with the filter medium 25 and the aluminum electrode 26, the forward / reverse three-way valve 29, the forward passage 12, and the bath connection adapter 19. When the bath temperature detected by the bath water sensor 9 of the bath water drops, the gas passes through the bath source solenoid valve 16 and the bath proportional valve 17, burns in the bath burner 18, absorbs heat in the bath heat exchanger 11, Carry out bath water.
[0014]
Hot water that has been absorbed by the hot water supply heat exchanger 3 passes through the hot water supply sensor 4 and the hot water supply amount control valve 5, and the hot water electromagnetic valve 20, the edge cut valve 21, the outward passage 12, and the bath return passage 13. The bath connection adapter 19 enters the bathtub.
[0015]
2 (a) and 2 (b) show the purification means of the present invention. When the circulating pump 32 is set to “weak operation” and the circulating water passes through the filtration tank 27, the aluminum electrode 26 in the filtration tank is about 5 mA. By energizing, dirt and hot water accumulated in the bathtub can be agglomerated, and the agglomerated foreign matter can be removed with the filter medium 25 in the filtration tank, so that the bathtub water can always be cleaned, and multiple people can continue to bathe. But you can keep it clean.
[0016]
3 (a) and 3 (b) show the high-temperature sterilization means of the present invention, in which high-temperature water of about 70 to 75 ° C. heated by the bath heat exchanger is heated to the bath heat exchanger 11, the upper outlet passage 23, and the drainage three-way valve 24. Then, it is passed through the filtration tank 27 having the filter medium 25 and the aluminum electrode 26, the forward / reverse three-way valve 29, the forward passage 12, and the bath connection adapter 19, and the high-temperature sterilization in the filtration tank is performed, so that the germs in the filtration tank are heated to a high temperature. Can be sterilized and killed, keeping the filtration tank clean.
[0017]
【The invention's effect】
As described above, the bath water heater of the present invention is agglomerated by aggregating dirt and bacteria accumulated in the bathtub by joining aluminum hydroxide by energizing the aluminum electrode in the filtration tank, and collecting the aggregated foreign matter. By removing with a filter medium inside, the bath water can always be cleaned, and the germs aggregated in the filter tank can be sterilized at high temperature, so that cleanliness can be maintained even if a plurality of people bathe in succession.
[Brief description of the drawings]
FIG. 1 is a block diagram of a bath water heater according to an embodiment of the present invention. FIG. 2 (a) is a diagram showing purification means of the water heater. FIG. 1 (b) is a flowchart of a purification operation mode of the purification means. FIG. 4 is a flowchart showing the high-temperature sterilization operation mode of the high-temperature sterilization means. FIG. 4 is a configuration diagram of a conventional bath water heater.
9 Bath sensor 10 Water flow switch 11 Bath heat exchanger 12 Outward passage 13 Return passage 14 Water level sensor 15 Switching three-way valve 18 Bath burner 22 Bypass three-way valve 23 Upper outgoing passage 24 Drainage three-way valve 25 Filter material 26 Aluminum electrode 27 Filtration tank 28 Lower outgoing passage 29 Forward / reverse three-way valve 30 Drain port 31 Bypass passage 32 Circulation pump

Claims (1)

A bath heat exchanger heated from the hot water supply heat exchanger that exchanges heat by heating the burner performs hot water filling to the bathtub through the hot water solenoid valve, and the circulating bath water is heated by the burner. A bath water heater provided with a reheating operation for heating up to a predetermined temperature by exchanging heat and a purifying operation for removing the dirt by passing the circulating bath water through the purifying means,
Return passage and forward passage for circulating bath water, circulation pump arranged in the return passage, bath heat exchanger for heating the bath water supplied from the return passage, and bypass for bypassing the entrance and exit of the bath heat exchanger Connected to the passage, the bypass three-way valve that switches the bath water circulation path to the bath heat exchanger side or bypass passage side, the upper forward passage and the lower forward passage connected to the passage switched by the bypass three-way valve, and the upper forward passage A drainage three-way valve for switching the passage with the drainage side and a filtration tank having an aluminum electrode connected between the forward and reverse three-way valve for switching the passage with the bathtub side that is connected to the lower forward passage,
In the purification operation mode, the bypass three-way valve is switched to the upper going-out passage side, the drainage three-way valve is switched to the filtration tank side, and the forward and reverse three-way valve is switched to the bathtub side so that the bath water passes through the filtration tank. The operation mode is such that the bypass three-way valve is switched to the bath heat exchanger side, the drainage three-way valve is switched to the filtration tank side, and the forward and reverse three-way valve is switched to the bathtub side so that the bathtub water passes through the filter tank, and the bathtub A bath water heater that heats water to a high temperature with a bath heat exchanger .

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