CN112387136A

CN112387136A - Micro-bubble liquid supply system in apartment

Info

Publication number: CN112387136A
Application number: CN201910762194.1A
Authority: CN
Inventors: 伊藤正志
Original assignee: Fuji Keiki KK
Current assignee: Fuji Keiki KK
Priority date: 2019-08-16
Filing date: 2019-08-16
Publication date: 2021-02-23

Abstract

The invention provides a micro-bubble generation system in an apartment. In the micro-bubble generation system in an apartment, a sub water meter (28) is provided in a branch pipe (6) of a pipe (5) from an elevated water tank (4), a bypass flow path (29) is provided downstream of the sub water meter (28), a switching valve (30) is provided in a branch portion of the bypass flow path (29), and a micro-bubble liquid generation device (11) is provided in one of the bypass flow path (29) and the branch pipe (7) parallel to the bypass flow path (29). This makes it possible to select whether or not tap water is used as the fine bubble liquid, depending on preference.

Description

Micro-bubble liquid supply system in apartment

Technical Field

The present invention relates to a microbubble liquid supply system for converting water supplied to an apartment into water containing microbubbles.

Background

Recently, fine bubbles such as microbubbles (fine bubbles) and nanobubbles (ultrafine bubbles) have been used in many applications.

Since fine bubbles having a diameter of about 100 μm or less (for example, 50 to 500nm) are smaller than pores, dirt in pores and sweat glands is effectively removed. Therefore, it is considered that the fine bubble liquid is generally advantageous for beauty and health maintenance, and is excellent in various cleaning and plant growth.

The above-mentioned cleaning effect is generally considered to be obtained by an electric action of fine bubbles. That is, since the surfaces of the fine bubbles have negative charges, the fine bubbles are kept in a dispersed state without being united with each other, while dirt such as oil and sebum is generally positively charged and electrically bonded to the surface of a negatively charged object to be washed such as skin.

In such a state, when the negatively charged fine bubbles come into contact with the positively charged oil, sebum, or the like, the oil, sebum, or the like is electrically neutralized and easily separated from the surface of the object to be cleaned, and the cleaning effect is improved.

As a method for generating a fine bubble liquid, there are a two-phase flow swirling method in which external air is entrained in a swirling flow to be forcibly pulverized, a cavitation method in which a venturi tube and an orifice are provided in a flow path of water and dissolved air in water is extracted as fine bubbles by a pressure reduction effect (bernoulli's theorem) at the time of high-speed passage of water, and in addition, there are a high-speed shear method, a pressure crushing method, and the like.

Patent document 1 discloses a fine bubble generating apparatus. The fine bubble generation device is provided with a shunt tube, a hollow circular tube, and a partition plate, wherein a part of the shunt tube is expanded to form a bulge part, the hollow circular tube is used for generating fine bubbles, and the partition plate holds the hollow circular tube in the bulge part and is provided with a flow path.

Patent document 2 discloses a structure in which a fine bubble nozzle is disposed inside a cylindrical member as a fine bubble generating device for generating fine bubbles from air contained in tap water by cavitation, and the downstream side of a water meter is shown as a location where the fine bubble generating device is disposed.

Patent document 3 discloses an apparatus for generating microbubbles by dissolved air by cavitation. The specific location of the microbubble generator is not particularly mentioned, but the end portion of the nozzle such as a shower head is considered because a porous body such as a wire net or a net is attached to the outlet of the final nozzle.

Patent document 4 discloses a shower head incorporating a microbubble generator. In this conventional technique, a hose is connected to a mixing faucet in a washbasin, and a shower head is attached to the tip of the hose, so that a microbubble generator is disposed at the most downstream end of a water flow path.

Patent documents

5 and 6 do not disclose a fine bubble generating device, but disclose examples of arrangement of water treatment devices such as water purifiers.

That is, patent document 5 discloses a configuration in which a Magnetic Treatment Unit (MTU) or a Magnetic Separation Unit (MSU) for adsorbing and removing ferromagnetic particles suspended in water is disposed on the upstream side of an overhead water tank (water receiving tank) of an apartment or the like.

Patent document 6 discloses the following: a bypass flow path is provided in a part of the duct, and a water purifier is provided in the bypass flow path.

Patent documents

5 and 6 both remove foreign matter in water, and are therefore filters, which are completely different from a fine bubble generation device that generates fine bubbles in water in terms of purpose.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open publication No. 2002-143658

Patent document 2: japanese registered Utility model No. 3209280

Patent document 3: japanese laid-open patent publication No. 2009-136864

Patent document 4: japanese patent laid-open publication No. 2011-

Patent document 5: japanese laid-open patent publication No. 2-265691

Patent document 6: japanese patent laid-open publication No. 2002-143658

Disclosure of Invention

Problems to be solved by the invention

In the above-described conventional technology, no consideration is given to the case where tap water is supplied to a collective housing such as an apartment. In particular, in an apartment, a plurality of households live in one building, and although the efficacy of fine bubble water is excellent, it is not always desirable to use fine bubble water in all households, and among them, there is also considered a household that is desirable to use ordinary tap water. In addition, it is also possible to consider a case where water containing no fine bubbles is desired to be used depending on the season and time period.

That is, in an apartment house in which a plurality of homes are housed in one building, it is desired to simply switch between tap water and fine bubble water for the whole apartment house or for each home.

Means for solving the problems

In order to solve the above problem, in the microbubble liquid supply system in an apartment according to the first aspect of the present invention, a bypass pipe is provided in a middle of a pipe that supplies water to a water receiving tank provided on a roof of the apartment, a switching valve is provided at a branching portion between the bypass pipe and the pipe, a water meter is disposed in a pipe upstream of the switching valve, and a microbubble generator is provided in one of the bypass pipe downstream of the switching valve and a pipe parallel to the bypass pipe.

In the microbubble liquid supply system in an apartment according to the second aspect of the present invention, a bypass pipe is provided in the middle of a pipe that supplies water from a water receiving tank installed on a roof of the apartment to each household, a switching valve is provided at a branching portion between the bypass pipe and the pipe, a water meter is provided separately for each household in the pipe on the upstream side of the switching valve, and a microbubble generator is provided in one of the bypass pipe on the downstream side of the switching valve and the pipe parallel to the bypass pipe.

Effects of the invention

According to the present invention, when it is determined that the supply of the microbubble liquid to the entire apartment or each user is unnecessary, the supply of the microbubble liquid can be stopped and ordinary tap water can be supplied. Therefore, the fine bubble liquid can be supplied to the whole house or the whole building by the liquid generating device. Therefore, it is possible to respond to the demands of the residents of the apartment.

Further, by disposing the water meter in the pipe upstream of the bypass pipe and the branch portion of the pipe, the amount of water containing no bubbles can be measured. Further, since the filter is provided in a case where the water meter is provided on the upstream side of the branch portion, large foreign matter does not enter the fine bubble generation device, and the generated fine bubbles do not come into contact with the filter, and therefore, the generated fine bubbles do not disappear.

In order to supply the fine bubble liquid to the entire apartment in a concentrated manner, it is advantageous to dispose the fine bubble generating device on the upstream side of the elevated water tank. In this case, the time for the fine bubbles to remain in the overhead water tank becomes a problem, but it was found that the fine bubbles of 500nm or less remain even after the lapse of four months or more.

Drawings

Fig. 1 is an overall view of a fine bubble liquid supply system of the present invention.

Fig. 2 is a partially enlarged view of fig. 1.

Fig. 3 is a cross-sectional view showing an example of the microbubble liquid generating apparatus.

Fig. 4 is a cross-sectional view showing an example of the switching valve.

Description of reference numerals:

1 … water receiving tank; 2 … pump; 3. 5 … piping; 4 … elevated water tank; 6 … branch pipe; 7 … filter (water purifier); 8 … general water meter; 9 … bypass flow path; 10 … switching valve; 11 … micro bubble liquid generating device; 12. 12A, 12B … water pipes; 13 … bulge; 14 … nozzle; 15 … support member; 16 … inner ring; 17 … outer ring; 18 … plate-shaped connecting part; 19 …, connecting part; an inner flow path; 21 … water taking plate; 22 … through holes; 23. 24, 25 … openings; 26 … circular chamber; 27 … a valve core; 28 … secondary water meter; 29 … bypass flow path; 30 … switch the valve.

Detailed Description

Fig. 1 shows an apartment to which the microbubble liquid supply system of the present invention is applied, and tap water stored in a water receiving tank 1 on the ground is sent to an overhead water tank 4 on the roof through a pipe 3 by a pump 2. The water stored in the elevated water tank 4 is supplied to each household through a pipe 5 and a branch pipe 6 branched from the pipe 5.

A total water meter 8 with a filter 7 is provided in the middle of the pipe 3 connecting the pump 2 and the roof-top elevated water tank 4, a bypass flow path 9 is provided downstream of the total water meter 8, and a switching valve 10 is provided at a branching portion of the bypass flow path 9.

A fine bubble liquid generator 11 is provided in one of the bypass channel 9 and the duct 3 parallel to the bypass channel 9. In the present embodiment, a fine bubble liquid generator 11 is provided in the bypass passage 9.

As shown in fig. 3, the microbubble liquid generating device 11 is composed of a water passage pipe 12 having both ends connected to the bypass passage 9, a nozzle 14 disposed in a bulging portion 13 formed in the center of the water passage pipe 12, and a support member 15 holding the nozzle 14 in the bulging portion 13.

The water passage pipe 12 is formed by connecting the pipe body 12A and the pipe body 12B, and the end portions of the pipe body 12A and the pipe body 12B facing each other are expanded in diameter. The diameter of the expanded diameter portion of the tube 12B is larger than the diameter of the expanded diameter portion of the tube 12A, and the expanded diameter portions of the tubes 12A are inserted into the expanded diameter portions of the tubes 12B, and the threads formed on the inner and outer peripheries thereof are screwed together to connect them.

The support member 15 is composed of an inner ring 16, an outer ring 17, and a connecting portion connecting the inner ring 16 and the outer ring 17, the nozzle 14 is screwed and held inside the inner ring 16, the outer ring 17 is held between the

pipe bodies

12A and 12B by a spring (cushion) 18, and a flow path 19 is formed between the inner ring 16 and the outer ring 17.

The nozzle 14 is cylindrical, the inner flow path 20 is constricted in an orifice shape, and a water-fetching plate 21 is attached to the upstream end of the inner flow path 20. The water-collecting plate 21 has a disk shape and has a through-hole 22 formed in the thickness direction. A plurality of, for example, four through holes 22 are provided at equal intervals, and the through holes 22 are twisted with respect to the axial direction. As a result, the water flow passing through the through-hole is twisted and further passes through the portion constricted in the orifice shape, so that the cavitation effect effectively acts, and the gas dissolved in the water is extracted into the water as fine bubbles.

The fine bubbles generated by the fine bubble liquid generating device 11 are temporarily held in the water receiving tank 2, but the surfaces of the fine bubbles are negatively charged, so that the fine bubbles repel each other and hardly disappear from the water, and the fine bubbles remain in the water until the water is used in each household.

As shown in fig. 4, the switching valve 9 is formed with

openings

23 and 24 into which the pipe 3 is inserted and an opening 25 into which the pipe of the bypass flow path 9 is inserted, a circular chamber 26 is formed in a portion orthogonal to the

openings

23, 24, and 25, and a valve body 27 that selectively closes the

openings

23, 24, and 25 is rotatably housed in the chamber 26 by an external operation.

In the state of fig. 1, the water having passed through the total water meter 8 is directly supplied without entering the bypass passage 9. On the other hand, when the valve body 27 is rotated by 90 ° counterclockwise from the state shown in the figure, the water having passed through the total water gauge 8 enters the bypass flow path 9 and passes through the fine bubble liquid generating apparatus 11, and the water containing fine bubbles is supplied to each terminal end in the home. The rotation operation of the spool 27 may also be performed by remote operation.

Fig. 2 shows a structure of a second invention in which supply of the fine bubble liquid is performed on a user-by-user basis. In the second invention, the sub water meter 28 is provided in the branch pipe 6 of the pipe 5 from the overhead water tank 4, the bypass flow path 29 is provided downstream of the sub water meter 28, the switching valve 30 is provided in the branch portion of the bypass flow path 29, and the fine bubble liquid generating device 11 is provided in one of the bypass flow path 29 and the branch pipe 6 (the bypass flow path 29 in the example of the drawing) parallel to the bypass flow path 29.

In an apartment, not all households require tap water containing fine bubbles, taking into account the difference in preference among households. In this case, a switching valve 30 is provided at the branch portion of the bypass flow path 29.

Industrial applicability

In the illustrated example, the fine bubble liquid generating device of the cavitation type is shown as the fine bubble liquid generating device, but the fine bubble liquid generating device is not particularly limited, and may be a two-phase flow swirling type, a high-speed shear type, a pressure crushing type, or the like. The bubbles are not limited to air, and carbon dioxide gas, oxygen gas, hydrogen gas, or the like may be used.

Claims

1. A micro-bubble liquid supply system in an apartment house,

a bypass pipe is provided in the middle of a pipe for supplying water to a water receiving tank installed on the roof of an apartment, a switching valve is provided at a branching portion between the bypass pipe and the pipe, a water meter is disposed in the pipe on the upstream side of the switching valve, and a fine bubble generating device is provided in one of the bypass pipe on the downstream side of the switching valve and the pipe parallel to the bypass pipe.

2. A micro-bubble liquid supply system in an apartment house,

a bypass pipe is provided in the middle of a pipe for supplying water from a water receiving tank installed on the roof of an apartment to each household, a switching valve is provided at a branching portion between the bypass pipe and the pipe, a water meter is provided separately for each household in the pipe on the upstream side of the switching valve, and a fine bubble generating device is provided in one of the bypass pipe on the downstream side of the switching valve and the pipe parallel to the bypass pipe.