JP2001241073A - Water supply apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To implement an inexpensive and easily maintainable water supply apparatus which can eliminate lead contained in water supplied from a water supply main pipe, at an intake port of indoor piping, suppresses elution of lead from the indoor piping and potable water supply equipment, and drastically reduces the amount of lad contained in water and hot water spouted from the potable water supply equipment. SOLUTION: The water supply apparatus is comprised of a water supply header, a hot water supply header, water supply piping, and hot water supply piping. The water supply header communicates with the water supply main pipe, and includes a water supply piping connecting port to the water supply equipment and a water outlet port to a water heater. The hot water supply header includes a hot water intake port from the water heater and a hot water piping connecting port to the water supply equipment. The water supply piping connects the water supply piping connecting port to the water supply equipment, and the hot water supply piping connect the hot water supply piping connecting port to the water supply equipment. Further, a lead eliminating section is arranged on an upstream side of the water supply header, to thereby suppress elution of lead.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water supply apparatus in which the concentration of lead contained in hot and cold water discharged from plumbing equipment is significantly reduced.

[0002]

2. Description of the Related Art Conventionally, the lead contained therein elutes into water from a water supply pipe using a lead pipe or a copper alloy plumbing device, and hot water containing lead is discharged from the plumbing device. It has been known that continuous drinking of hot water containing lead has a bad effect on the human body.

In order to suppress the elution of lead, Japanese Patent Application Laid-Open No.
The water passage section is made of a lead-free material as shown in Japanese Patent No. 510301 or the inner surface of a water passage of a copper alloy water supply device as shown in JP-A-10-72683. It is possible to equip the plumbing equipment with one that selectively removes lead by alkali treatment on the factory side or a water purifier that removes lead contained in water as shown in JP-A-9-75923. Are known.

[0004]

However, even if the elution of lead from the plumbing equipment is suppressed, the lead contained in the water supply pipe is discharged as it is, and a water purifier that removes lead to each plumbing equipment is provided. Installation is costly and maintenance of water purifier performance is also difficult.

The present invention solves the above-mentioned disadvantages, removes lead contained in water supplied from a water supply pipe at an inlet of an indoor pipe, and suppresses elution of lead from indoor pipes and drinking water plumbing equipment. It is an object of the present invention to realize an inexpensive and easy-to-maintain water supply device that can significantly reduce the amount of lead contained in hot and cold water discharged from a drinking water supply device.

[0006]

In order to solve this problem, a water supply apparatus according to the present invention is provided with a water supply pipe connection to water supply equipment and a water outlet to a water heater, which is connected to a water supply pipe. A hot water supply header portion, a hot water supply header portion having a hot water inlet from the hot water supply device and a hot water supply pipe connection port to the water supply equipment, the water supply pipe connection port and the hot water supply pipe connection port, and water supply equipment. Water supply piping, hot water supply piping and
A lead removal section is provided upstream of the water supply header section.

[0007] By providing the lead removing portion between the water supply pipe and the water supply header, lead contained in the water in the water supply pipe is removed at the entrance of the indoor pipe, so that the lead removal equipment is provided with individual plumbing equipment. There is no need to provide a unit. It is only necessary to maintain and maintain the lead removing unit intensively, and it can be cheaper than installing the lead removing unit in each plumbing device, and does not narrow the space of the plumbing indoor space such as a kitchen or a washroom.

Further, the water supply header portion, the hot water supply header portion, the water supply pipe, and the water contact portion of the water passage of the hot water supply pipe provided downstream of the lead removal section are subjected to a lead removal treatment or made of a material containing no lead. This is preferable because lead is not eluted from the water supply header section, the hot water supply header section, the water supply pipe, and the hot water supply pipe, and water containing almost no lead is discharged from the plumbing equipment.

The water supply pipe and the hot water supply pipe are made of resin pipes, and the inner surface of the water supply passage of the main copper alloy part of the water supply header and the hot water supply header is treated with an alkali or an acid to suppress lead elution. In addition, the elution of lead is suppressed by treating the inner surface of the water passage of the main copper alloy part of the plumbing appliance for drinking among the plumbing appliances with an alkali treatment or an acid treatment.

As described above, since the water / hot water header is made of a synthetic resin or a copper alloy from which lead is removed from the inner surface of the water passage, no lead is eluted from the water / hot water supply header. Since the material is synthetic resin, no lead is eluted from them.In addition, lead is removed from the inner surface of the water passage of the main copper alloy parts of the plumbing equipment to be used for drinking in plumbing equipment. This is preferable because lead does not elute and water containing almost no lead is discharged from a plumbing device for drinking.

[0011] Incidentally, lead is also present in the copper alloy parts used in the water heater, and the amount of lead eluted from the copper alloy parts is insignificant and there is little risk of causing health problems. If a second lead removal unit is provided between the water heater and the hot water heater, or if the inner surface of the copper alloy water-permeable part of the water heater is treated with alkali or acid to suppress the elution of lead, the hot water in the hot water supply pipe can be removed. The amount of lead contained is also significantly reduced, which is preferable.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings. FIG. 1 is a piping layout diagram of an entire house using a water supply device, and FIG. 2 is a water distribution board and a hot water supply containing a lead removing section and a water supply / hot water supply header. FIG. 3 is an external perspective view showing the inside of the water distribution panel, FIG. 4 is a cross-sectional view of the water distribution panel, FIG. 5 is a schematic view showing the relationship between the water distribution panel and the water heater, FIG. Is a cross-sectional view showing a connection point between a water supply / hot water supply pipe and a plumbing device, FIG. 7 is an external perspective view of the plumbing device, FIG. 8 is a cross-sectional view of the plumbing device, and FIG. 10 is a schematic diagram showing the relationship between a water distribution board and a water heater according to another embodiment.

In FIG. 1, reference numeral A denotes a water distribution board installed on a house foundation 1. A water supply pipe 2 is provided on one side, and a direct pressure water heater 3 is provided on the other side. From the back of the water distribution board A to the indoor from the back side, a hot water mixer tap B for kitchen, a hot water mixer tap C for a vanity sink, a water tap D for a washing machine, a hot water mixer tap E for a bathroom washroom, a hot water mixer tap F for a bathtub hot water supply, and a toilet Internal fitting G
A water supply pipe 4 and a hot water supply pipe 5 are formed of a resin pipe made of cross-linked polyethylene or polybutene to a plumbing device such as the above.

In this embodiment, the water distribution board A is fixed to the foundation 1 of the house as shown in FIG. 2, and rises from the ground 8 at a water inlet 7 protruding from one side surface 6 of the water distribution board A. The water supply source pipe 2 is connected, and a water pressure outlet 10 and a hot water inlet 11 projecting from the other side surface 9 of the water distribution board A are connected to a direct pressure type through a steel pipe water supply pipe 12, a hot water supply pipe 13 and the like. Gas or oil water heater 3 is connected.

The water distribution board A is formed by pressing a stainless steel plate or the like, and a water supply / hot water supply pipe 4, 5
Are mounted in two horizontal rows, a lead removing section 16 and a water supply header section 17 are mounted laterally from the side surface 6 to the side surface 9, and the hot water supply header section 18 is mounted on the side surface 9. The water distribution panel A has an opening 19 on the front side and the upper side thereof.
Reference numeral 9 is covered with a lid 20 having a substantially L-shaped cross section.

The water inlet 7 attached to the side surface 6 is provided with a drain plug 21 and a check valve portion 22 in this order, and is connected to the lead removing portion 16 through the side 6.

As shown in FIG. 9, the lead removing section 16
A section 27 filled with activated carbon a by a porous partition plate 26 in a casing 25 having an outlet 3 and an outlet 24, and a section 28 filled with powder b of a calcium phosphate-based ceramic such as tertiary calcium phosphate or bone charcoal. The water supplied from the water supply pipe 2 and flowing in from the inlet 23 is cleaned with activated carbon a to remove chlorine and mold odor, and the calcium phosphate-based ceramics is divided into sections 29 filled with the hollow fiber filtration membrane c. The lead is removed at b, the microorganisms and pollutants are removed at the hollow fiber filtration membrane c, and the hollow fiber filtration membrane reaches the outlet 24.

An outlet 24 of the lead removing section 16 is connected to a water supply header section 17 made of bronze or reinforced plastic containing glass fiber.

The water supply header portion 17 is formed in a tubular shape with both ends opened and is fixedly attached to a first stay 31 welded to the lower surface 30 of the water distribution board A with a first band 32. The other opening is connected to the lead removing portion 16, the other opening projects from the side surface 9 to form a water outlet 10, and a water supply pipe connection port 33 is formed on the peripheral surface toward the guide 15 provided on the back surface 14 of the water distribution board A. Multiple in the same direction, in this example
Nine are provided.

The reason why the number of the water supply pipe connection ports 33 is nine is that the water supply equipment for the water supply pipe 4 in a house is
Mixing tap B for kitchen, mixing tap C for vanity stand, mixing tap F for washing machine, mixing tap E for bathroom basin, mixing tap F for hot water supply in bathtub, and fitting G for toilet are common. It is a toilet fitting for the second floor as a water supply device and a hot / water mixer tap for a vanity stand, and the number of water supply pipe connection ports corresponding to these and one spare are added to this. If the number of units is changed from 6 to 10, ordinary houses will be able to handle them.

A hot water supply header 18 made of the same material as the water supply header 17 and having a bottomed cylindrical shape with one end opened.
The water distribution board A is arranged so that the water supply header section 17 is located at the lower rear side and the hot water supply header section 18 is located at the upper front side in a laterally uneven shape on the side face 9 of the water distribution board A in parallel with the water supply header section 17.
A second stay 35 welded to the lower surface 30 includes a second band 35.
The opening of the hot water supply header 18 protrudes from the side face 9 of the water distribution board A to form a hot water inlet 11, and a hot water supply pipe connection port 36 is provided on the peripheral surface on the rear surface 14 of the water distribution board A. A plurality of guides 15 are provided in the same direction toward the provided guides 15, in this example, six are provided.

The reason why the number of the hot water supply pipe connection ports 36 is six is that the water supply equipment for the hot water supply pipe 5 in the house is
Mixing tap B for kitchen, mixing tap C for vanity stand, mixing tap E for bathroom basin, and mixing tap F for hot water supply in bathtub are common. It is a hot and cold water mixing tap, and the number of water supply pipe connection ports corresponding to them and the number of water supply pipe connection ports are set to 6 by adding one spare,
If the number of hot water supply pipe connection ports is changed from 4 to 7, ordinary houses can sufficiently cope.

In the water supply pipe connection port 33 and the hot water supply pipe connection port 36, the water supply pipe 4, the hot water supply pipe 5
Is connected at one end using a clip 37 or the like, and a blocking lid (not shown) is attached to the unused pipe connection ports 33 and 34.

Reference numeral 38 denotes a drain plug provided between the water outlet 10 and the water heater 3, and 39 denotes a safety valve provided between the water heater 3 and the water inlet 11.

The water supply pipe 4 and the hot water supply pipe 5 pass under the floor or the like, and the other end is inserted into a water space such as a kitchen through a guide member 41 fixed to the floor 40 or the like. A connector 45 having a check valve 43 and a female coupler 44 is connected in a watertight manner.

For example, a male coupler 49 attached to the distal end of a flexible hose 48 for water supply / hot water supply of a kitchen hot water mixing tap B or a kitchen hot water mixing tap C installed on a kitchen counter 46 or a vanity stand 47 is connected. One-touch connection with the female coupler 44 of the tool 45.

When the water supply / hot water supply headers 17 and 18 and the connector 45 are made of a copper alloy, the hot water mixing tap B for kitchen and the hot water mixing tap C for a vanity table for drinking are made of the main copper alloy. The elution of lead is suppressed by treating the inner surface of the water passage with alkali or acid.

For example, in the case of the kitchen water mixer tap B shown in FIGS. 7 and 8, the main body 50 is formed of a synthetic resin such as polyphenylene oxide, and the water discharge pipe 51, the male coupler 49 and the like are made of a brass pipe. And made of brass bars.

Then, the spout 51 and the male coupler 49,
Water-flowing parts made of brass pipes, brass rods, bronze, etc., such as the water supply / hot water supply headers 17 and 18 and the connector 45, are used to process the inner surfaces of the water passages in the process of manufacturing these parts.
Alkali treatment or acid treatment is performed by the method disclosed in Japanese Patent Application Laid-Open No. 0-72683, etc., to remove lead deposited on the surface in advance.

Of course, when the water supply / hot water supply headers 17, 18 and the connector 45 are made of synthetic resin, these do not contain lead, so that alkali treatment or acid treatment is unnecessary. Needless to say.

When, for example, hot water mixed with an appropriate temperature of hot water is stored in a kettle or the like using the kitchen hot water mixing tap B, the water is supplied from the water supply pipe 2, the drain plug section 21, and the check valve. Lead, as well as chlorine and odorous substances contained in the raw water, are removed through the valve section 22 and the lead removing section 16, leading to the water supply header section 17 and connected to any of the water supply pipe connection ports 33. It flows into the water side of the hot and cold water mixing tap B through the supplied water supply pipe 4.

Further, the water supply header section 17 extends from the water supply pipe 2 to the water supply header section 17.
Flows into the water outlet 10 without linearly receiving the water flow resistance through the water supply header 17, and the water flows into the water heater 3 via the water supply pipe 12 and the like, and flows into the governor and the heat exchanger. The hot water flows into the hot water supply header 18 from the hot water inlet 11 through the hot water supply pipe 13 and the like, and passes through the hot water supply pipe 5 connected to any one of the hot water supply pipe connection ports 36. B flows into the hot water side.

During this time, the water supply pipe 4 and the hot water supply pipe 5 are made of synthetic resin and lead does not elute, and the water supply header section 17, the hot water supply header section 18 and the hot-water mixer tap B pass water through the copper alloy water-permeable parts. Since lead is removed from the inner surface, lead does not elute, and therefore, safe hot water containing almost no lead is discharged from the hot and cold water mixing tap B.

Incidentally, the governor and heat exchanger (not shown) in the water heater 3 are often made of a copper alloy, but the amount of lead eluted from this copper alloy part is very small and is healthy. Although there is little possibility of causing a problem, a second lead removing section 52 may be provided between the hot water supply header section 17 and the hot water supply apparatus 3 as shown in FIG.

In this case, since chlorine and foreign substances have been removed in advance by the lead removing section 16, only the calcium phosphate-based ceramics b needs to be stored in the casing in the second lead removing section 52, and activated carbon a and hollow fiber The film c may not be provided.

Alternatively, the elution of lead may be suppressed by treating the inner surface of the copper alloy water-permeable part of the water heater 3 with an alkali treatment or an acid treatment.

The present invention can be variously modified without being limited to the above-described embodiment. For example, hydroxyapatite or the like may be used as a lead removing substance, and a general filter may be used instead of a hollow fiber membrane. May be used.

[0038]

The water supply apparatus according to the present invention comprises a water supply header section which is connected to a water supply pipe and has a water supply pipe connection port for water supply equipment and a water outlet to a water heater. A hot water supply header section having a hot water inlet and a hot water supply pipe connection port for the water supply equipment, a water supply pipe for connecting the water supply pipe connection port and the hot water supply pipe connection port with the water supply equipment, and a hot water supply pipe are provided. Since the lead removal section is provided on the upstream side of the water supply header section, lead contained in the water in the water supply pipe is removed at the entrance of the indoor piping, and there is no need to provide a lead removal section in each plumbing device. It is only necessary to maintain and maintain the lead removing unit intensively, and it can be cheaper than installing the lead removing unit in each plumbing device, and does not narrow the space of the plumbing indoor space such as a kitchen or a washroom.

[Brief description of the drawings]

FIG. 1 is a piping layout diagram of an entire house using a water supply device.

FIG. 2 is an external perspective view showing an installation state of a water distribution board containing a lead removing unit and a water supply / hot water supply header and a water heater.

FIG. 3 is an external perspective view showing the inside of a water distribution panel.

FIG. 4 is a sectional view of the water distribution board.

FIG. 5 is a schematic diagram showing a relationship between the water distribution board and a water heater.

FIG. 6 is a cross-sectional view showing a connection point between a water supply / hot water supply pipe and a plumbing device.

FIG. 7 is an external perspective view of a plumbing device.

FIG. 8 is a sectional view of a plumbing device.

FIG. 9 is a cross-sectional view of a lead removing unit.

FIG. 10 is a schematic diagram illustrating a relationship between a water distribution board and a water heater according to another embodiment.

[Explanation of symbols]

A: Water distribution board B: Kitchen hot water mixing tap C: Washing vanity hot water mixing tap D: Washing machine water tap E: Bathroom hot water mixing tap F: Bathtub hot water mixing tap G: Toilet internal fitting a: Activated carbon b: Calcium phosphate ceramics c: Hollow fiber membrane 1: Basic 2: Water supply pipe 3: Hot water supply 4: Water supply pipe 6: Side 7: Water inlet 8: Ground 9: Side 10: Water flow Outlet 11: Hot water inlet 12: Water supply pipe 13: Hot water supply pipe 14: Back 15: Guide 16, 52: Lead removal section 17: Water supply header 18: Hot water header 19: Opening 20: Lid 21: Water Pull-out stopper 22: Check valve 23: Inlet 24: Outlet 25: Casing 26: Partition plate 27, 28, 29: Partition 30: Lower surface 31: First stay 32: First band 33: Water supply pipe connection port 34: 2nd stay 35: 2nd Band 36: Hot water supply pipe connection port 37: Clip 38: Drain plug section 39: Safety valve section 40: Floor 41: Guide member 42: Water stop valve 43: Check valve 44: Female coupler 45: Connector 46: Kitchen counter 47 : Vanity table 48: Flexible hose 49: Male coupler 50: Body 51: Water discharge pipe

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Makiko Nakajima 2-1-1 Nakajima, Kokurakita-ku, Kitakyushu-shi, Fukuoka F-term (reference) 2D060 AB03 AC01 4D038 AA04 AB74 AB90 BB06 BB09 4K053 PA06 PA18 QA07 RA14 RA21 ZA10 4K062 AA01 AA05 BA08 BA11 FA04 FA05 FA16 GA01 GA10

Claims (6)

[Claims] 1. A water supply header portion which is connected to a water supply main pipe and has a water supply pipe connection port for water supply equipment and a water outlet for a water heater, a water inlet from the water heater and the water supply. A hot water supply header section having a hot water supply pipe connection port to equipment, a water supply pipe for connecting the water supply pipe connection port and the hot water supply pipe connection port to plumbing equipment, and a hot water supply pipe, and an upstream side of the water supply header section A water supply device characterized in that a lead removal section is provided in the water supply device. 2. A lead removal treatment or a lead-free material is applied to a water supply header portion, a hot water supply header portion, a water supply pipe, and a water contact portion of a water passage of a hot water supply pipe provided downstream of the lead removal portion. The water supply device according to claim 1, wherein: 3. A water supply pipe and a hot water supply pipe are constituted by resin pipes,
The water supply header portion and the hot water supply header portion are made of synthetic resin, and the inner surface of the water passage of the main copper alloy part of the water supply device for drinking in the water supply device is subjected to alkali treatment or acid treatment to lead. 3. The water supply device according to claim 1, wherein the elution is suppressed. 4. A water supply pipe and a hot water supply pipe are constituted by resin pipes,
The water supply header portion, the inner surface of the water passage of the main copper alloy component of the hot water supply header portion is treated with alkali or acid to suppress the elution of lead, and the copper of the plumbing equipment for drinking in the plumbing equipment. The water supply device according to claim 1 or 2, wherein the inner surface of the water passage of the alloy part is subjected to an alkali treatment or an acid treatment to suppress lead elution. 5. The water supply apparatus according to claim 1, further comprising a second lead removing section provided between the hot water supply header section and the water heater. 6. The water supply apparatus according to claim 1, wherein the inner surface of the main copper alloy water-flowing part of the water heater is treated with an alkali or an acid to suppress lead elution.