JPH0240282A - Water cleaner of direct coupling type to faucet - Google Patents

Abstract

PURPOSE:To introduce air into a cartridge and to suppress the generation of malodors during water stop by providing upper and lower closing valves and a juncture to the water cleaner, forming a space part to the juncture of a vertically movable valve disk and providing the same to the top part of the cartridge. CONSTITUTION:A valve seat 15 is fixed to the top part of a case 14 of the cartridge 7 in which a hollow fiber membrane 11 and active carbon 8 are housed. The upper closing valve 16 and the lower closing ball valve are connected by the juncture. The space in which the air is passed is formed to this juncture. The upper closing valve 16 is gradually dropped and hermetically closed under its own weight by a pressure drop when the tap water is stopped by a lever 3. A small quantity of the air is admitted into the cartridge 7 from the space part in the spacing between the juncture and the valve seat 15 at this time, by which the propagation of anaerobic bacterial is suppressed and the generation of the malodors is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water purifier that is directly connected to a faucet and has a water application cartridge composed of a hollow fiber membrane and activated carbon.

[Conventional technology]

Direct-to-faucet water purifiers with water application cartridges composed of hollow fiber membranes and activated carbon must be compact or require special space to meet consumers' demands for improved quality of drinking water. The demand for it is rapidly increasing because it has the advantage that it does not need to be used.

[Problem to be solved by the invention]

However, in faucet-connected water purifiers that have cartridges that utilize these hollow fiber membranes, the cartridge container is full of water when the water is turned off, so anaerobic sulfate ring-forming bacteria and other bacteria that have accumulated on the hollow fiber membrane surface are generated. Sexually transmitted bacteria produce a strange odor and taste, which significantly reduces the product value.

In order to prevent the occurrence and proliferation of this anaerobic bacteria,
If air can be introduced into the J-edge part, one possible method is to install an air introduction valve to introduce air into the cartridge when the water is stopped, but simply installing an air introduction valve will not work after the water stops. Water gradually drips from the faucet until the water in the cartridge is completely removed, making it extremely difficult to drain water, and it takes time to fill the cartridge with water before water comes out of the faucet when water is recirculated. There is a space/title between Koto etc.

[Means for solving confusing problems]

The gist of the present invention is a water filtration car composed of a hollow fiber membrane and activated carbon. An air valve consisting of a valve body that can move up and down according to pressure fluctuations within the valve body, and a valve seat that has a space for vertical movement of the valve body and that allows the upper closing valve of the valve body to come into close contact with the upper closing valve from above and the lower closing valve of the valve body from below. This water purifier is directly connected to a faucet and has an inlet valve installed at the top of the IJ.

The present invention was made as a result of the discovery that the generation and proliferation of anaerobic bacteria can be prevented by introducing a small amount of air into the cartridge.

The water purifier of the present invention will be explained below with reference to the drawings.

By switching the lever (3), the raw water is purified either directly from the nozzle (4) or through the water purifier.
It flows out from the nozzle (5).

The tap water is introduced into the cartridge (7) through the water channel (6). The water that has passed through the pores of the granular or fibrous activated carbon layer (8) is introduced into the hollow fiber membrane Modineal (11) via flowing water channels (9) and (10). The water discharged by the hollow fiber membrane reaches the water purification nozzle (5) through the water purification channel (13) from the open end surface (12) of the hollow portion of the hollow fiber membrane.

Here, the cartridge (7) is a cartridge case (14).
], and the cartridge case (14) is fitted and fixed to the bottom of the water purifier main body. A valve seat (15) is fixed to the top of this cartridge case (14), and valve bodies (16 to 1) are further fixed to this valve seat (15).
8) is inserted so that it can move up and down.

2-1 to 2-3 are detailed views of the air introduction valve.

A valve body consisting of an upper closing valve (16), a connecting portion (17), and a lower closing valve (18) is inserted into a through hole (space) provided in the center of the valve seat (15), The outer diameter of the connection part of the valve body is smaller than the inner diameter of the space part of the valve seat.

Figure 2-1 shows the position of the valve body when tap water is flowing into the cartridge (14), and the lower closing valve (18) is pressed against the lower part of the valve seat (15) by water pressure to introduce air. The valve is sealed. Water stopped flowing and the car) IJudge (
14) When the internal pressure gradually decreases, the valve body gradually falls downward due to its own weight (Figure 2-2). At this time, a small amount of air flows into the cartridge through the gap between the connection part (17) of the valve body and the valve seat (15), and this air prevents the growth of anaerobic bacteria. As the water pressure continues to decrease, the valve body falls further, and the upper closing valve (16) comes into close contact with the valve seat (15) from above the valve seat (15), closing the air introduction valve (Figure 2-3). . In this state, air is no longer introduced into the cartridge, and water droplets also stop falling from the water purification nozzle (5).

Note that the amount of air introduced into the cartridge can be appropriately set depending on the length of the connecting portion of the valve body and the size of the gap between the connecting portion and the valve seat.

Furthermore, a p-filter membrane or the like may be installed inside or outside the air introduction valve as necessary to prevent the inflow of bacteria in the air.

On the other hand, the small amount of air introduced into the cartridge is quickly discharged out of the cartridge through the gap between the connection part of the valve body and the valve seat when the valve body is moved upward by water pressure when water is recirculated. You can fill the cartridge with water.

〔Effect of the invention〕

The faucet-type water purifier equipped with the air introduction valve of the present invention automatically introduces a small amount of air into the cartridge when water flow is stopped, thereby preventing the generation and proliferation of anaerobic bacteria and suppressing the occurrence of off-flavors and tastes. Can be done. In addition, when the water supply resumes, it will be completed in a short time)! 7
Because the inside of the azalea is kept clean, you can get purified water immediately.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing an example of a water purifier directly connected to a faucet equipped with the air introduction valve of the present invention, and FIG. 2 is a detailed diagram illustrating the operating state of the air introduction valve. Further, FIGS. 3 and 4 are views showing other air introduction valves. 1...Tap water faucet 2...Water purifier mounting part 3...Waterway switching lever 4...Raw water nozzle 5...Water purification nozzle 6...Raw water introduction channel 7...Cartridge 8...Activated carbon layer 9.1o...Water hole 11...Hollow fiber membrane 12...Open end surface of the hollow part of the hollow fiber membrane 13...Water purification channel 14...Cartridge case 15... Valve seat 16... Upper closing valve of the valve body 17... Connection portion 18 of the valve body... Lower closing valve of the valve body

Claims (1)

[Claims] A valve body that has an upper closing valve, a connection part, and a lower closing valve and can move up and down according to pressure fluctuations in the water purifier in a faucet-type water purifier that has a water filtration cartridge composed of a hollow fiber membrane and activated carbon. and an air introduction valve having a space for vertical movement of the valve body and a valve seat to which the upper closing valve of the valve body can be brought into close contact from above and the lower closing valve of the valve body from below is provided at the top of the water filtration cartridge. A water purifier that connects directly to the faucet.