JPH10318600A - Bath hot water supply apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To treat scales gathering in a bath tub and the contaminant of hot water into a neat and clean state, in purification and sterilization of bath tub water for a bath hot water supply apparatus. SOLUTION: A bath hot water supply apparatus comprises a purifying means to pass circulation water in a bath tub through a filter tank 28 and flocculate the scales and bacteria of circulation water through energization of an aluminum electrode 27 and remove a flocculated foreign matter by filtering media 26 in the filter tank 28; and a high temperature sterilizing means to effect high temperature sterilization of the interior of the filter tank 28, an outgoing passage 17, and a return passage 11 by high temperature water generated by heating supply hot water by a bath heat-exchanger 16. This constitution, even when a plurality of users take bathing in succession, keeps water of bath tub water in a neat state and keeps a clean state.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to purification and sterilization of bathtub water in a bath water heater capable of supplying hot water and additional heating.

[0002]

2. Description of the Related Art A conventional bath water heater has a configuration as shown in FIG.

Water passes through a water supply sensor, a water temperature sensor 2 from a water supply port, absorbs heat in a hot water supply heat exchanger 3, passes through a hot water supply sensor 4, a hot water supply amount control valve 5, and is discharged from a hot water outlet.
The gas passes from a gas inlet through a hot water supply source solenoid valve 6, a hot water supply proportional valve 7, and is burned by a hot water supply burner 8.

The bath water is supplied by a circulation pump 9 to a bath connection adapter 10, a return passage 11, a water level sensor 12, a switching three-way valve 13, a bath sensor 14, a water flow switch 15, a bath heat exchanger 16, an outgoing passage 17, and a bath connection adapter. When the temperature circulates with 10 and the temperature of the hot water detected by the bath sensor 14 decreases, the gas passes through the bath source solenoid valve 18 of the gas and the bath proportional valve 19, burns in the bath burner 20, and removes heat in the bath heat exchanger 16. Absorb and reheat the bath water.

When the hot water is supplied to the bathtub, the hot water that has absorbed heat in 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 is supplied with the hot water supply electromagnetic valve 21, the cutoff valve 22, the outgoing passage 17 and the bath. It passes through the return passage 11 and enters the bathtub from the bath connection adapter 10.

[0006]

However, in the above-mentioned conventional bath water heater, a plurality of persons continuously take a bath or continuously use the water in the bath tub due to dirt or hot water dirt accumulated in the bath tub. This is very filthy, and in order to clean it, it is necessary to replace hot water in the bath tub and clean the bath tub.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a bath water heater, comprising: a return passage for circulating water in a bathtub; a three-way bypass valve; a bath heat exchanger; Purification means for passing through a three-way valve, a filtration tank, a forward / reverse three-way valve, a forward passage, energizing the electrodes to aggregate foreign matter in circulating water, and removing the aggregated foreign matter with a filter material in the filtration tank, and a water temperature sensor. The hot water heated by the hot water supply heat exchanger flows from the hot water supply solenoid valve and the cutoff valve to the bypass three-way valve and the bath heat exchanger, and is further heated by the bath heat exchanger. High-temperature sterilizing means for flowing into the upper passage, drainage three-way valve, filtration tank, forward / reverse three-way valve, and outflow passage, and sterilizing the filtration tank and outflow passage at high temperature; and a water temperature sensor, a water amount sensor, and a hot water supply sensor. Hot water supply by controlling the water flow control valve The hot water heated by the exchanger flows from the hot water supply solenoid valve and the cutoff valve to the bypass three-way valve and the bath heat exchanger, and is further heated by the bath heat exchanger to high-temperature water, and then flows to the two-way valve and the return passage. High-temperature sterilization means for performing high-temperature sterilization.

[0008] According to the above invention, dirt and bacteria that accumulate in the bathtub are aggregated by energizing the electrodes in the filtration tank, and the aggregated dirt and bacteria are removed by the filter material in the filtration tank. Hot water is used as hot water instead of water to ensure the safety of hot water supply, high-temperature sterilization kills bacteria that have clumped in the filtration tank, and kills bacteria in the outgoing passage and return passage by hot-sterilizing the outgoing passage and return passage of the bath. The bathtub water can be kept clean even when a plurality of people continuously take a bath or use the water in the bathtub continuously since the inside of the filtration tank and the outgoing passage and the return passage are always kept clean.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention can be embodied in the form described in each claim. As described in claim 4, a hot water supply heat exchanger for heating feed water to hot water, A water temperature sensor for detecting temperature and a water amount sensor for detecting the flow rate of hot water, a hot water sensor for detecting hot water temperature and a hot water supply control valve for controlling hot water flow rate, and a bath heat exchanger for heating circulating water. A return passage through which circulating water flows from the bathtub to the bath heat exchanger, a water level sensor for detecting the water level of the bathtub, a circulation pump for circulating the bathtub water, a bath sensor for detecting the hot water temperature of the bathtub, And a three-way valve for switching between a bath passage and a bath heat exchanger and a bypass three-way valve for switching between a bypass passage and a hot water supply electromagnetic valve and a cutoff valve provided respectively in a passage connecting a hot water supply passage and a return passage. An upper going passage and a lower going passage provided respectively on the downstream side from a junction of the bath heat exchanger and the bypass passage, a drainage three-way valve provided in the upper going passage, and provided on the downstream side of the drainage three-way valve, respectively. Was
A filtration tank having a drain and a filter medium and an electrode, and a three-way valve provided at the junction of the filtration tank and the lower going passage,
An outgoing passage through which circulating water flows from the three-way valve to the bathtub,
A specific bath water heater having a configuration including a return passage through which circulating water in the bath tub flows from the bath tub to the switching three-way valve, and a two-way valve provided in a passage connecting the bath heat exchanger and the three-way valve. And passing the circulating water of the bathtub to the return passage, the bypass three-way valve, the bath heat exchanger, the upper going passage, the drainage three-way valve, the filtration tank, the forward / reverse three-way valve, the going passage as defined in claim 1,
Heating water exchange by controlling the water temperature sensor, water flow sensor, hot water supply sensor, and water flow control valve by purifying means for aggregating foreign matter in the circulating water by applying electricity to the electrode and removing the flocculated foreign matter with the filter material in the filtration tank, The hot water heated by the water heater flows from the hot water supply solenoid valve and the cutoff valve to the bypass three-way valve and the bath heat exchanger, and is further heated by the bath heat exchanger to produce high-temperature water. Inverted three-way valve, flowing into the outgoing passage, high-temperature sterilizing means for performing high-temperature sterilization of the filtration tank and outgoing passage, and control of the water temperature sensor, the water amount sensor, the hot water supply sensor, and the water amount control valve, the hot water heated by the hot water supply heat exchanger. High-temperature sterilization that flows from the hot-water supply solenoid valve and the cutoff valve to the bypass three-way valve and the bath heat exchanger, further heats the bath heat exchanger into high-temperature water, flows to the two-way valve and the return passage, and sterilizes the return passage at high temperature. To have means Ri can specifically practice the present invention.

[0010] The dirt and bacteria accumulated in the bathtub are aggregated by supplying electricity to the electrodes in the filtration tank, and the aggregated dirt and bacteria are removed by the filter material in the filtration tank. The hot water supply temperature is not hot water but hot water. In order to ensure the safety of hot water supply, high temperature sterilization kills the bacteria that have clumped in the filtration tank, and further sterilizes the outgoing passage and return passage of the bath with high temperature to kill the bacteria in the outflow passage and the return passage. In addition, since the outgoing passage and the return passage are always kept clean, the bathtub water can be kept clean even if a plurality of people continuously take a bath or use the bathtub water continuously.

After completion of the high-temperature sterilization means in the return passage according to the first aspect, the high-temperature water in the return passage is supplied from the return passage through the three-way valve, the circulation pump, the bypass three-way valve, and the bath heat exchanger. High-temperature sterilization means is used to sterilize the return passage inside the device by killing the bacteria in the return passage inside the device by performing high-temperature sterilization by flowing to the vessel and sterilizing the return passage inside the device. Therefore, the bathtub water can be kept clean even if a plurality of people take a bath continuously or use the water in the bathtub continuously.

According to a third aspect of the present invention, the high-temperature sterilization of the return passage inside the apparatus described in the second aspect is performed by removing hot water from the return passage from the return passage through a three-way valve, a circulation pump, a bypass three-way valve, and bath heat exchange. High-temperature sterilization means that heats the hot water in the return passage with a bath thermistor until the hot water in the return passage becomes hot using a bath thermistor, sterilizes the return passage inside the device at high temperature and kills bacteria in the return passage inside the device. By keeping the return passage clean at all times, the bathtub water can be kept clean even if a plurality of people continuously take a bath or use the bathtub water continuously.

An embodiment of the present invention will be described below with reference to the drawings. The same parts as those of the conventional bath water heater shown in FIG. 7 are denoted by the same reference numerals.

FIG. 1 shows an embodiment of the present invention. Water passes through a water supply sensor, a water temperature sensor 2 from a water supply port, absorbs heat in a hot water supply heat exchanger 3, and supplies a hot water supply sensor 4, a hot water supply amount control valve 5 Through the hot water outlet. The gas passes from the gas inlet through a hot water supply source solenoid valve 6, a gas hot water supply proportional valve 7, and a hot water supply burner 8.
Burned in.

Bath water is supplied by a circulation pump 9 to a bath connection adapter 10, a return passage 11, a water level sensor 12, a switching three-way valve 13, a bath sensor 14, a water flow switch 15, a bypass three-way valve 23, a bath heat exchanger 16, and a top heat exchanger. Passage 24,
It circulates through a drainage three-way valve 25, a filtration tank 28 provided with a filter medium 26 and an aluminum electrode 27, a forward / reverse three-way valve 29, an outgoing passage 17, and a bath connection adapter 10. Bathtub water bath sensor 1
When the temperature of the hot water detected in step 4 decreases, the gas passes through the bath source solenoid valve 18 and the bath proportional valve 19 of the gas and passes through the bath burner 2.
It burns at 0, absorbs heat in the bath heat exchanger 16, and reheats the bathtub water.

As for the hot water to the bathtub, the hot water that has absorbed heat in 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 supply electromagnetic valve 21, the cutoff valve 22, the outgoing passage 17 and the bath water It passes through the return passage 11 and enters the bathtub from the bath connection adapter 10. Reference numeral 29 denotes a forward / reverse three-way valve provided in the lower going passage 30, reference numeral 31 denotes a two-way valve, reference numeral 32 denotes a bypass passage, and reference numeral 33 denotes a drain port.

(Embodiment 1) FIG. 2 shows a purifying means according to Embodiment 1 of the present invention.
When the circulating water passes through the filtration tank 28, the aluminum electrode 27 in the filtration tank 28 is energized to combine dirt and bacteria that accumulate in the bath tub with aluminum hydroxide and aggregate,
The agglomerated foreign matter can be removed by the filter medium 26 in the filter tank 28, and the purifying operation of the bathtub is continued unless the operation switch is turned off. Therefore, the bathtub water can be constantly cleaned, and a plurality of persons continuously take a bath. Or keep using the water in the bathtub to keep it clean.

FIG. 3 shows a high-temperature sterilizing means for an outgoing passage in the first embodiment of the present invention. The hot water supply heat exchanger 3 is heated by controlling a water temperature sensor 1, a water amount sensor 2, a hot water supply sensor 4 and a water amount control valve 5. Hot water of about 50 ° C. and 6 liters flows from the hot water supply electromagnetic valve 21 and the cutoff valve 22 to the bypass three-way valve 23 and the bath heat exchanger 16, and is further heated by the bath heat exchanger 16 to obtain high temperature water of about 75 ° C. , Upper going passage 24, drainage three-way valve 25, filtration tank 28, forward / reverse three-way valve 29, going passage 17
The filter tank 28 and the outgoing pipe can be kept clean by sterilizing and killing the bacteria in the filter tank 28 and the outgoing pipe at a high temperature by performing high temperature sterilization of the filter tank 28 and the outgoing pipe. The hot water supply temperature is not about high temperature water but about 50 ° C. hot water, so that the safety of hot water supply during sterilization operation can be ensured.

FIG. 4 shows a high-temperature sterilizing means for the return passage in the first embodiment of the present invention, which is heated by the hot water supply heat exchanger 3 under the control of the water temperature sensor 1, the water amount sensor 2, the hot water supply sensor 4 and the water amount control valve 5. Hot water of about 50 ° C. and 6 liters flows from the hot water supply electromagnetic valve 21 and the cutoff valve 22 to the bypass three-way valve 23 and the bath heat exchanger 16, and is further heated by the bath heat exchanger 16 to obtain high temperature water of about 75 ° C. By flowing to the lower going passage 30, the two-way valve 31, and the return passage 11 and performing high-temperature sterilization of the return pipe, the return pipe can be sterilized at a high temperature and killed to keep the return pipe clean. It is possible to ensure the safety of hot water supply during sterilization operation by using hot water of about 50 ° C. instead of high-temperature water.

(Embodiment 2) FIG. 5 shows a high-temperature sterilizing means for a return passage inside the apparatus according to a second embodiment of the present invention.
Circulation pump 9, bypass three-way valve 23, bath heat exchanger 16
Then, the return passage inside the device is sterilized at a high temperature to kill the germs in the return pipe inside the device by high-temperature sterilization of the return passage inside the device, so that the return passage inside the device can be kept clean.

(Embodiment 3) FIG. 6 shows a high-temperature sterilizing means according to Embodiment 3 of the present invention, in which high-temperature water in a return passage 11 is switched from the return passage 11 by a three-way valve 13, a circulation pump 9, a bypass three-way valve 23, and a bath. Flow to heat exchanger 16 and bath sensor 1
By heating in the bath heat exchanger 16 until the hot water in the return passage inside the device reaches 75 ° C. and sterilizing the return passage inside the device at a high temperature, the bacteria in the return pipe inside the device are sterilized at a high temperature. The return path inside the device can be kept clean by killing it.

[0022]

As described above, according to the first aspect of the present invention, the dirt and bacteria that accumulate in the bath are agglomerated by energizing the electrodes in the filtration tank, and the agglomerated dirt and bacteria are collected in the filtration tank. The hot water temperature is not hot water but hot water to ensure the safety of hot water supply and to kill bacteria agglutinated in the filter tank, bacteria in the outgoing pipe and return pipe by high temperature sterilization, The bathtub can be kept clean even if a plurality of people take a continuous bath or use the bathtub water continuously.

According to the second aspect of the present invention,
In addition to the effect of the invention according to claim 1, the return passage can be more strongly sterilized at a high temperature by using a bath heat exchanger. High temperature sterilization in the return passage can be reliably performed by utilizing the sensor.

According to the fourth aspect of the present invention,
Specifically, it is easy to implement a bath water heater.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a bath water heater in an embodiment of the present invention.

FIG. 2 (a) is a configuration diagram of a bath water heater showing a purifying means in Embodiment 1 of the present invention.

FIG. 3 (a) is a configuration diagram of a bath water heater showing high-temperature sterilization means for an outgoing passage in the first embodiment of the present invention.

FIG. 4 (a) is a configuration diagram of a bath water heater showing high temperature sterilization means of a return passage in the first embodiment of the bath water heater of the present invention.

FIG. 5 is a configuration diagram of a bath water heater showing high-temperature sterilization means of a return passage in a second embodiment of the present invention.

FIG. 6 is a configuration diagram of a bath water heater showing high-temperature sterilization means for a return passage in a third embodiment of the present invention.

FIG. 7 is a configuration diagram of a conventional water heater.

[Explanation of symbols]

 Reference Signs List 1 water sensor 2 water temperature sensor 3 hot water supply heat exchanger 4 hot water supply sensor 5 water flow control valve 8 hot water supply burner 9 circulation pump 11 return passage 12 water level sensor 13 switching three-way valve 14 bath sensor 15 water flow switch 16 bath heat exchanger 17 outgoing passage 20 bath Burner 21 Hot water supply solenoid valve 22 Edge cutoff valve 23 Bypass three-way valve 24 Upper access passage 25 Drainage three-way valve 26 Filter material 27 Aluminum electrode 28 Filtration tank 29 Forward / reverse three-way valve 30 Lower access passage 31 Two-way valve

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Tatsushi Iwamoto 1006 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (72) Kenichi Takagaki 1006 Kadoma Kadoma Kadoma City, Osaka Matsushita Electric Industrial Co.

Claims (4)

[Claims] The circulating water in the bath tub is passed through a return passage, a bypass three-way valve, a bath heat exchanger, an upper going passage, a drainage three-way valve, a filtration tank, a forward / reverse three-way valve, and a going passage, and the electrodes are energized. Purification means for aggregating foreign matter in the circulating water and removing the agglomerated foreign matter with the filter material in the filter tank, and controlling the water temperature sensor, the water amount sensor, the hot water supply sensor, and the water amount control valve to remove hot water heated by the hot water supply heat exchanger. It flows from the hot water supply solenoid valve and the cutoff valve to the bypass three-way valve and the bath heat exchanger, and is further heated by the bath heat exchanger to produce high-temperature water.
The hot water supply heat exchanger is controlled by controlling a water temperature sensor, a water amount sensor, a hot water supply sensor, and a water amount control valve. Flowing the hot water heated in the hot water supply solenoid valve and the cutoff valve to the bypass three-way valve, a bath heat exchanger,
A bath water heater provided with high-temperature sterilization means for further heating in a bath heat exchanger to produce high-temperature water, flowing to the two-way valve, the return passage, and performing high-temperature sterilization of the return passage. 2. After the high-temperature sterilization means in the return passage specified in claim 1, hot water in the return passage flows from the return passage to the switching three-way valve, the circulation pump, the bypass three-way valve, and the bath heat exchanger. The bath water heater according to claim 1, further comprising high-temperature sterilization means for performing high-temperature sterilization of the return passage inside the device. 3. The high-temperature sterilizing means for the return passage inside the apparatus according to the second aspect is a high-temperature sterilizing means for heating the hot water in the return passage with a bath sensor in a bath heat exchanger by a bath sensor until the temperature becomes high. And bath water heater. 4. A hot water supply heat exchanger for heating water supply, a water temperature sensor provided in the water supply passage for detecting the supply water temperature and a water amount sensor for detecting the supply water flow rate, and provided in the water supply passage for detecting the temperature of the hot water. A hot water supply sensor and a water flow control valve for controlling the flow rate of hot water, a bath heat exchanger for heating the circulating water, a return passage through which the circulating water flows from the bathtub to the bath heat exchanger, a circulation pump for circulating the bathtub water, and a hot water supply A switching three-way valve for switching between a bath passage and a bath heat exchanger and a bypass three-way valve for switching a bypass passage; a hot water supply solenoid valve and a cutoff valve provided respectively in a passage connecting a hot water supply passage and a return passage; An upper going passage and a lower going passage provided on the downstream side from a junction of the bath heat exchanger and the bypass passage, a three-way drainage valve provided in the upper going passage, and a three-way drainage valve. Respectively provided in the downstream side,
A drainage tank and a filtration tank having a filter material and an electrode, a forward / reverse three-way valve provided at a junction of the lower return passage and the filtration tank, and a forward passage through which circulating water flows from the forward / reverse three-way valve to the bathtub, The bath hot water supply according to claim 1, further comprising: a return passage through which circulating water from a bathtub flows from the bathtub to the switching three-way valve; and a two-way valve provided in a passage connecting the bath heat exchanger and the forward / reverse three-way valve. vessel.