JPH0596274A - Water-hot water supply device - Google Patents

Abstract

PURPOSE:To provide the subject device capable of certainly sterilizing bacteria propagated in a water purifier by utilizing the hot water from a hot water supply device. CONSTITUTION:A storage type hot water supply device 1 and a water purifier 11 are provided. The hot water supply pipe 3 supplying hot water from the storage type hot water supply device 1 is allowed to communicate with the water supply pipe 62 supplying water to the water purifier 11 from a water supply source by a water purifier hot water supply pipe 20 and an electromotive valve 21 is provided to the hot water supply pipe 20.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply / hot water supply device having a hot water supply device and a water purification device.

[0002]

2. Description of the Related Art Conventionally, in general households, a kitchen is equipped with a water heater and a water purifier, and hot water from the water heater is used as it is or by mixing with water source water from a water supply pipe to wash the dishes at an appropriate temperature. The purified water from the water purifier is used as drinking water.

FIG. 4 shows a system schematic diagram of a conventional water supply / hot water supply device. In FIG. 4, a hot water storage type water heater 1 has an electric heater 2 built therein, and a hot water supply port 1 formed at the upper end of the electric heater 2.
A is connected to a hot water valve 4 by a hot water supply pipe 3. A water supply pipe 5 for supplying water source water is connected to a water valve 7 via a pressure reducing valve 6, and a water heater water supply pipe 8 branches from between the pressure reducing valve 6 and the water valve 7 of the water supply pipe 5. It communicates with a water supply port 1B formed in the lower part of the hot water storage type water heater 1. A relief valve 9 is provided immediately above the hot water supply port 1A of the hot water storage type hot water supply device 1, and the volume expansion caused by boiling of the hot water in the hot water storage type hot water supply device 1 is discharged from the relief valve 9. A discharge pipe 10 is provided in communication with both the hot water valve 4 and the water valve 7.

The water purifier 11 for removing the odor of scaly water from the source water to produce delicious water is composed of a filtering material such as activated carbon, non-woven fabric or a thread membrane filter, and is branched from the water supply pipe 5. Pipe 12 is water purification valve 13
Is connected to the water inlet 11A at the bottom of the water purifier 11. In addition, the discharge port 11B formed at the bottom of the water purifier 11
A purified water discharge pipe 14 is connected to the.

Next, the operation of the water supply / hot water supply apparatus of FIG. 4 will be described. The hot water storage type water heater 1 used in general households is
The maximum working pressure is 1 kgf / cm ² (9.8 × 10 ⁴ p
a) It is legally obligatory to use below, and the water supplied from the water supply pipe 5 is decompressed by the pressure reducing valve 6,
The water is supplied from the water supply port 1B to the hot water supply type hot water supply device 1 through the hot water supply device water supply pipe 8 and is boiled by energizing the electric heater 2.

When the water valve 7 is opened, the water whose pressure has been reduced by the pressure reducing valve 6 is supplied from the discharge pipe 10 via the water supply pipe 5. On the other hand, when the hot water valve 4 is opened, the water whose pressure has been reduced by the pressure reducing valve 6 is supplied from the water heater water supply pipe 8 to the hot water storage type water heater 1 as described above.
To the electric heater 2, where about +8
It is boiled to 5 ° C., and this boiled hot water is supplied from the discharge pipe 10 through the hot water supply pipe 3. Water valve 7 and hot water valve 4
It is also possible to obtain a mixed hot water having an appropriate temperature by appropriately adjusting the opening degree of.

To obtain purified water, the water purification valve 13 is opened. As a result, the water whose pressure has been reduced by the pressure reducing valve 6 passes through the water supply pipe 5, the water purifier water supply pipe 12, and the water purifier 1 through the water supply port 11A.
1 and is purified in the water purifier 11 to be purified water and supplied from the purified water discharge pipe 14.

Further, FIG. 5 shows a system schematic view of another conventional water supply / hot water supply apparatus. In FIG. 5, the same reference numerals as those in FIG. 4 have the same functions, and the description thereof will be omitted. In this case, the water supply pipe 15 separated from the pressure reducing valve 6 and the water valve 7 of the water supply pipe 5 is connected to the water supply port 1B formed in the lower part of the hot water storage water heater 1, and the water supply pipe 15 is connected to the water supply port 1B. Branch in front, water inlet 11A at the bottom of water purifier 11
Is in communication with. Further, the outlet 11B of the water purifier 11 is formed at the upper end of the water purifier 11, and the outlet 11B
A water purification pipe 16 communicating with the water purification pipe 16 is connected to the water purification valve 13 through the hot water supply pipe 3, and the water purification valve 13 is connected to the water purification pipe 1.
4 is connected.

Next, the operation of this conventional water supply / hot water supply system will be described. When the water valve 7 is opened, the water whose pressure has been reduced by the pressure reducing valve 6 is supplied from the discharge pipe 10 through the water supply pipe 5. Further, when the hot water valve 4 is opened, the water decompressed by the pressure reducing valve 6 is supplied to the hot water storage type water heater 1 through the water supply pipe 15, and the hot water boiled up to about + 85 ° C. is passed through the hot water supply pipe 3 and the discharge port 10.
Supplied from As described above, the mixed hot water can be obtained by appropriately adjusting the openings of the water valve 7 and the hot water valve 4.

Further, in order to obtain purified water, when the water purification valve 13 is opened, the water decompressed by the pressure reducing valve 6 is supplied to the water purifier 11 through the water supply pipe 15 like the hot water storage type water heater 1. Purified water purified in the water purifier 11 is supplied from the purified water discharge pipe 14 through the purified water pipe 16.

[0011]

In the conventional domestic water purifier 11, the water purifier 11 is used when not in use.
There was a problem that various bacteria would propagate in the water retained inside. The amount of miscellaneous bacteria that propagate in this accumulated water increases in proportion to the standing time, and the accumulated water in the water purifier 11 that has been left overnight is a general water quality standard (Ministerial Ordinance) that is a criterion for judging whether or not it is acceptable as drinking water. Rejected in terms of bacteria.

For this reason, the manufacturer or sales company of the water purifier 11 instructs every morning to release the water for 50 to 60 seconds before use. It is said that there are cases in which they are breeding, and that management issues such as whether the user can carry out this discharge reliably or secure the discharge time, and that a considerable amount of water must be wasted. There was a problem with financial or resource measures.

The present invention has been made in order to solve the above-mentioned conventional problems, and prevents bacteria that propagate in the water purification device from
An object of the present invention is to provide a water supply / hot water supply device that can appropriately sterilize by using hot water from the hot water supply device.

[0014]

A water supply / hot water supply device according to claim 1 comprises a hot water supply device, a water purification device, a hot water supply passage for supplying hot water from the hot water supply device, and a water supply passage for supplying water source water to the water purification device. The hot water supply passage and the water supply passage are communicated with each other, and a flow rate control means interposed in the communication passage.

The water supply / hot water supply device according to a second aspect of the present invention is a water supply device, a water purification device, a water supply passage communicating with both the water supply device and the water purification device to supply water source water to them, and hot water from the water supply device. And a purified water passage for supplying purified water from the water purifier, a communication passage for connecting the hot water supply passage and the purified water passage, and a flow rate control means interposed in the communication passage. ..

Furthermore, the water supply / hot water supply device according to claim 3 is a water supply device, a water purification device, a water supply passage communicating with both the water supply device and the water purification device to supply water source water to them, and hot water from the water supply device. For supplying purified water from the water purifier, a communication passage for connecting the hot water supply passage and the purification water passage, and hot water from the water heater for the water purification device via the communication passage. The flow rate control means forcibly circulates.

[0017]

When the flow rate control means of the water supply / hot water supply device according to the first aspect opens the flow path, the hot water boiled by the hot water supply device flows into the water purifier from the water supply path via the hot water supply path and the communication path. The hot water kills and disinfects the bacteria that propagate in the water purifier.

Further, when the flow passage is opened by the flow rate control means of the water supply / hot water supply device according to the second aspect and the hot water supply passage and the purified water passage are communicated by the communication passage, the hot water supply device-hot water supply passage-communication passage-
A circulation circuit of purification water channel-water purification device-water supply channel-hot water supply device is configured, and hot water in the hot water supply device naturally circulates in the circulation circuit due to the difference in specific gravity from the water in the water purification device. As a result, the hot water from the hot water supply device flows into the water purifier, and the hot water kills and disinfects the bacteria that propagate in the water purifier.

Further, when the flow rate control means of the water heater / hot water supplier according to claim 3 is operated, the hot water in the hot water supplier is sucked into the communication passage via the hot water supply passage, and the hot water supply device-hot water supply passage-communication passage. −
It is forcedly circulated in the circulation circuit of the purification water passage-water purification device-water supply passage-hot water supply device. As a result, the hot water from the hot water supply device flows into the water purifier, and the hot water kills and disinfects the bacteria that propagate in the water purifier.

[0020]

Embodiments will now be described in detail with reference to the drawings. Figure 1
Shows an embodiment of a water supply / hot water supply device corresponding to the invention of claim 1. In FIG. 1, those denoted by the same reference numerals as those in FIG. 4 have the same function. A hot water storage type water heater 1 as a hot water supply apparatus has an electric heater 2 built therein, and a hot water supply port 1A formed at the upper end thereof has a hot water supply passage. Hot water supply pipe 3 as hot water valve 4
It is connected to the. A water supply pipe 5 for supplying water source water is connected to a water valve 7 via a pressure reducing valve 6, and a water heater water supply pipe 8 branches from between the pressure reducing valve 6 and the water valve 7 of the water supply pipe 5. It communicates with a water supply port 1B formed in the lower part of the hot water storage type water heater 1. A relief valve 9 is provided immediately above the hot water supply port 1A of the hot water storage type hot water supply device 1, and the volume expansion caused by boiling of the hot water in the hot water storage type hot water supply device 1 is discharged from the relief valve 9. A discharge pipe 10 is provided in communication with both the hot water valve 4 and the water valve 7.

The water purifier 11 as a water purifying device comprises activated carbon,
A water purifier water supply pipe 12 as a water supply passage branched from the water supply pipe 5 is connected to a water supply port 11A below the water purifier 11 via a water purification valve 13 which is internally constituted by a filtering material such as a non-woven fabric or a yarn membrane filter. .. Further, a purified water discharge pipe 14 is connected to a discharge port 11B formed in the lower portion of the water purifier 11.

In the present invention, the water inlet 11 of the water purifier 11 is further provided.
Water purifier water supply pipe 12 and hot water supply pipe 3 between A and the water purification valve 13
Are connected to each other by a water purifier hot water supply pipe 20 as a communication passage, and an electric valve 21 as a flow rate control means is provided in the middle of the water purifier hot water supply pipe 20. Also, this motorized valve 2
Reference numeral 1 indicates that the opening / closing is controlled by the timer control unit 22 at a preset time.

Next, the operation of the water supply / hot water supply system of FIG. 1 will be described. In FIG. 1 as well as in FIG. 4, the hot water storage type water heater 1
The maximum working pressure is 1 kgf / cm ² (9.8 × 10 ⁴ p
a) It is legally obligatory to use below, and the water supplied from the water supply pipe 5 is decompressed by the pressure reducing valve 6,
The water is supplied from the water supply port 1B to the hot water supply type hot water supply device 1 through the hot water supply device water supply pipe 8 and is boiled by energizing the electric heater 2.

When the water valve 7 is opened, the water whose pressure has been reduced by the pressure reducing valve 6 is supplied from the discharge pipe 10 via the water supply pipe 5. On the other hand, when the hot water valve 4 is opened, the water whose pressure has been reduced by the pressure reducing valve 6 is supplied from the water heater water supply pipe 8 to the hot water storage type water heater 1 as described above.
To the electric heater 2, where about +8
It is boiled to 5 ° C., and this boiled hot water is supplied from the discharge pipe 10 through the hot water supply pipe 3. Water valve 7 and hot water valve 4
It is also possible to obtain a mixed hot water having an appropriate temperature by appropriately adjusting the opening degree of.

Further, the water whose pressure is reduced by the pressure reducing valve 6 by opening the water purification valve 13 is supplied to the water supply pipe 5 and the water purifier water supply pipe 1.
After being supplied to the water purifier 11 from the water supply port 11A via 2 and purified in the water purifier 11, it becomes purified water and the purified water discharge pipe 1
Supplied from No. 4.

On the other hand, when the time set in the timer control unit 22 comes, the motor-operated valve 21 is opened, and the hot water of about + 85 ° C. stored in the hot water storage type water heater 1 is supplied to the hot water supply pipe 3, the water purifier hot water supply pipe 20, and the hot water supply pipe 20. The water flows into the water purifier 11 from the water supply port 11A through the water purifier water supply pipe 12 and flows out from the water purification discharge pipe 14. As a result, the water accumulated in the water purifier 11 is discharged from the outlet 11B.
Is discharged from the purified water discharge pipe 14, and at the same time, hot water flows through the filter medium in the water purifier 11 to kill and discharge the bacteria adhering to them. Timer control unit 22
After supplying hot water for a predetermined time required for sterilizing the water purifier 11,
The electric valve 21 is closed. Here, since the water purifier 11 suppresses the growth of bacteria, its heat capacity is reduced if the amount of water retained is reduced, and therefore, only a small amount of hot water needs to be supplied for sterilization. It takes less time to open.

The hot water sterilization operation by the timer control unit 22 may be performed once a day at midnight when the user does not use the kitchen, or may be set a few times a day. The user determines the set time of the timer control unit 22 as appropriate.

Next, FIG. 2 shows an embodiment of a water supply / hot water supply device corresponding to the invention of claim 2. In FIG. 2, those denoted by the same reference numerals as those in FIG. 1 have the same functions, and a description thereof will be omitted. In this case, as in the case of FIG. 5, the water supply pipe 15 as a water supply passage separated from the pressure reducing valve 6 and the water valve 7 of the water supply pipe 5 is connected to the water supply port 1B formed in the lower portion of the hot water storage type water heater 1 as a hot water supply device. While being communicated with, the water supply pipe 15 branches off before the water supply port 1B to be a water purifier 11 as a water purifier.
It communicates with the lower water supply port 11A. Furthermore, water purifier 1
The discharge port 11B of No. 1 is formed at the upper end of the water purifier 11, and a water purification pipe 16 as a purification water channel communicating with this discharge port 11B passes over the hot water supply pipe 3 as a hot water supply channel and is connected to the water purification valve 13. , Clean water discharge pipe 1 to this clean water valve 13
4 is connected.

Further, in the case of the present invention, a communication pipe 23 is provided as a communication passage which descends from the hot water supply pipe 3 and communicates with the purified water pipe 16. An electrically operated valve 21 as a flow rate control means similar to that described above is provided in the middle of the communication pipe 23.
Similarly, 1 is configured to be opened and closed by the timer control unit 22.

Next, the operation of the water supply / hot water supply apparatus of the invention of FIG. 2 will be described. When the water valve 7 is opened, the water whose pressure has been reduced by the pressure reducing valve 6 is supplied from the discharge pipe 10 through the water supply pipe 5. Further, when the hot water valve 4 is opened, the water decompressed by the pressure reducing valve 6 is supplied to the hot water storage type water heater 1 through the water supply pipe 15, and the hot water boiled up to about + 85 ° C. is passed through the hot water supply pipe 3 and the discharge port 10. Supplied from As described above, the mixed hot water can be obtained by appropriately adjusting the openings of the water valve 7 and the hot water valve 4.

When the water purification valve 13 is opened, the water whose pressure has been reduced by the pressure reducing valve 6 is supplied to the water supply pipe 15 as in the hot water storage type water heater 1.
The purified water purified by the water purifier 11 is supplied from the purified water discharge pipe 14 through the purified water pipe 16.

The timer control section 22 controls the opening / closing of the motor-operated valve 21 at a preset time, and is a time period when the hot water is not boiled in the hot water supply type water heater 1 and the hot water is not used, for example, from 4 o'clock in the early morning to 6 o'clock. Set the opening time by the hour. At the time set in the timer control unit 22, the motor-operated valve 21 is opened, the hot water storage water heater 1 and the water purifier 11 are communicated via the communication pipe 23, and the hot water storage water heater 1-hot water supply pipe 3-communication is performed. A circulation circuit of the pipe 23, the water purification pipe 16, the water purifier 11, the water supply pipe 15 and the hot water storage type water heater 1 is configured (at this time, the water purification valve 13 is assumed to be closed). Here, hot water of about + 85 ° C. is stored in the hot water storage type hot water supply device 1, and the water purifier 11 communicating with the hot water supply device 1 and the communication pipe 23 and the pipes in the front and rear thereof contain the cold water supplied from the water source. 2, due to the difference in specific gravity between the hot water (hot water) of + 85 ° C. in the hot water storage type hot water heater 1 and the cold water, natural convection occurs in the circulation circuit as indicated by the broken line arrow in FIG. High temperature water is water purifier 1
It flows into 1. As a result, the water retained in the water purifier 11 is supplied by the hot water flowing from the discharge port 11B.
It is pushed out from the hot water storage type water heater 1 from 1A and heat-sterilized there. At the same time, hot water circulates through the filter media inside the water purifier 11,
Kill the bacteria attached to these. The timer control unit 22 operates the electric valve 21 for a predetermined time required for sterilizing the water purifier 11.
After opening, the electric valve 21 is closed. As a result, the natural convection phenomenon stops.

In each of the embodiments of the inventions described above, the method of automatically sterilizing the water purifier 11 by the combination of the motor-operated valve 21 and the timer control unit 22 is shown, but the motor-operated valve 21 is manually opened and closed. It goes without saying that a similar sterilizing effect can be obtained even if the valve is manually operated by the user.

Next, FIG. 3 shows an embodiment of a water supply / hot water supply device according to the invention of claim 3. In FIG. 3, those denoted by the same reference numerals as those in FIG. 2 have the same functions, and a description thereof will be omitted. Compared to FIG. 2, in the case of the present invention, a communication pipe 24 is provided as a communication passage that branches from the hot water supply pipe 3 and rises to communicate with the water purification pipe 16. In addition, this communication pipe 24
A circulation pump 25 as a flow rate control means is provided in the middle of the flow rate, and the circulation pump 25 is similarly provided in the timer control unit 22.
The operation is controlled by.

The operation of the water supply / hot water supply apparatus of the invention of FIG. 3 will be described. Since the basic operations for supplying hot water, supplying hot water, and supplying purified water are the same as those in FIG. 2, description thereof will be omitted, and only the operation for sterilizing the water purifier 11 will be described here. The operation time of the circulation pump 25 is set in the timer control unit 22, and the circulation pump 25 is set at a predetermined time.
Driving begins. When the operation of the circulation pump 25 is started, the hot water stored in the hot water storage type water heater 1 passes through the circulation pump 25 as indicated by the broken line arrow in FIG. Pipe 3-Communication pipe 24-Water purification pipe 16-Water purifier 11-Water supply pipe 15-Hot water is forcedly circulated in the circulation circuit of the hot water storage water heater 1, and the water purifier 1 is discharged from the outlet 11B of the water purifier 11.
1 (in this case, the water purification valve 13 is assumed to be closed). As a result, the water retained in the water purifier 11 is pushed out from the water supply port 11A to the hot water storage type water heater 1 by the hot water flowing in from the discharge port 11B, and is heated and disinfected there. At the same time, hot water flows through the filter medium in the water purifier 11 to kill the bacteria adhering to them. The operation of the circulation pump 25 is stopped when the operation time preset in the timer control unit 22 has elapsed.

The hot water sterilization under the control of the timer control unit 22 should be performed once a day as described above, for example, at midnight when hot water is rarely used or several times a day. Is also free. The circulation pump 25
The operating time per operation can be set in advance depending on the temperature of hot water to be circulated, the amount of circulating water, the heat capacity of the water purifier 11, etc. However, in general, the water purifier 11 suppresses bacterial growth as described above. Designed to reduce the amount of water retained,
Its heat capacity is small. Therefore, less hot water needs to be supplied for sterilization, and the operating time of the circulation pump 25 can be shortened.

In the above embodiment, the timer control unit 22
Although the circulation pump 25 is automatically operated by the above, it is needless to say that the same effect can be obtained by manually operating the circulation pump 25.

Here, the hot water storage type water heater 1 of each of the embodiments of the present invention generally boils hot water of + 85 ° C. as described above. On the other hand, when sterilizing with hot water, hot water sterilization at a medical institution is generally + 60 ° C. × 30 minutes. Therefore, in the case of the hot water storage type water heater 1, the effect can be obtained in a shorter time.

In the embodiments of the inventions described above, the user is allowed to arbitrarily set the opening time of the motor-operated valve 21 or the operating time of the circulation pump 25 in the timer control section 22, but the invention is not limited to this. When the water heater 1 is an electric water heater that uses late-night power with a discounted power rate, the timer control unit 22 causes the motor-operated valve 2 to match the midnight power supply time.
If 1 is configured to be automatically opened or the circulation pump 25 is automatically operated, in addition to the same effects as in the above embodiment, there is an effect that the user is relieved from the trouble of time setting.

Further, although the hot water supply device for supplying hot water has been described above with reference to the hot water storage type hot water supply device using the electric heater as a heat source, other heat sources such as gas and kerosene may be used. Or, it may be a momentary hot water heater,
Various modifications can be made without departing from the spirit of the invention.

[0041]

As described above in detail, according to the water supply / hot water supply apparatus of the invention of claim 1, the hot water supply apparatus can be used to supply hot water to the water purification apparatus to sterilize the inside of the water purification apparatus. An accurate sterilization effect of the water purification device can be obtained with a small amount of discharge.

The water supply according to the invention of claim 2 or 3
According to the hot water supply device, it is possible to circulate the hot water of the hot water supply device to the water purification device to kill bacteria and the like that propagate in the water purification device. The sterilizing effect of the water purifier can be obtained.

[Brief description of drawings]

FIG. 1 is a system configuration diagram of a water supply / hot water supply device according to the invention of claim 1.

FIG. 2 is a system configuration diagram of a water supply / hot water supply device according to the invention of claim 2.

FIG. 3 is a system configuration diagram of a water supply / hot water supply device according to the invention of claim 3.

FIG. 4 is a system configuration diagram of a conventional water supply / hot water supply device.

FIG. 5 is a system configuration diagram of another conventional water supply / hot water supply device.

[Explanation of symbols]

 1 Hot Water Storage Water Heater 3 Hot Water Supply Pipe 5 Water Supply Pipe 11 Water Purifier 12 Water Purifier Water Supply Pipe 20 Water Purifier Hot Water Supply Pipe 21 Electric Valve 22 Timer Control Section 23 Communication Pipe 24 Communication Pipe 25 Circulation Pump

Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location F24H 1/18 302 A 9251-3L 1/20 F 9251-3L

Claims (3)

[Claims] 1. A hot water supply device, a water purification device, a hot water supply passage for supplying hot water from the hot water supply device, a water supply passage for supplying water source water to the water purification device, and a communication passage for connecting the hot water supply passage and the water supply passage. A water supply / hot water supply device comprising a passage and flow rate control means provided in the communication passage. 2. A hot water supply apparatus, a water purification apparatus, a water supply path communicating with both the hot water supply apparatus and the water purification apparatus for supplying water source water to them, and a hot water supply path for supplying hot water from the hot water supply apparatus, A purified water channel that supplies purified water from the water purification device,
A water supply / hot water supply device comprising: a communication passage that connects the hot water supply passage and the purified water passage, and a flow rate control means interposed in the communication passage. 3. A hot water supply apparatus, a water purification apparatus, a water supply path communicating with both the hot water supply apparatus and the water purification apparatus for supplying water source water to them, and a hot water supply path for supplying hot water from the hot water supply apparatus, A purified water channel that supplies purified water from the water purification device,
A water supply / hot water supply device comprising: a communication passage that connects the hot water supply passage and the purified water passage, and a flow rate control means for forcibly circulating hot water from the hot water supply device to the water purification device through the communication passage.