JP2587522Y2 - Water purifier - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a household water purifier having a filtration module having a filtration membrane such as a hollow fiber membrane and an adsorbent such as activated carbon. The present invention relates to a household water purifier having means.

[0002]

2. Description of the Related Art In recent years, household water purifiers having a built-in filtration module comprising a filtration membrane such as a hollow fiber membrane and an adsorbent such as activated carbon as basic components have been demanding consumers to improve the quality of drinking water. In order to meet it, its demand is rapidly expanding.

[0003] In these household water purifiers, water supplied from a water tap first passes through an activated carbon layer, where chlorine-based ions or organic substances that make water smell or taste worse, or trihalomethane harmful to the human body. Etc. are removed by being decomposed or adsorbed. Next, the water passes through a filtration membrane such as a hollow fiber membrane, where the permeation of iron rust, suspended matter, bacteria, and the like not adsorbed by the activated carbon layer is prevented, and sanitary purified water is obtained.

[0004] However, if water is passed through the water purifier at an appropriate flow rate or more, the decomposition and adsorption capacity of the activated carbon layer do not follow, and the water to be treated passes with insufficient purification. The filtration membrane inside was also easily clogged at an early stage. ,
As the clogging of the filtration membrane progresses, the filtration flow rate decreases,
The filtration module needs to be replaced.

Conventionally, such a household water purifier having a discharge flow rate display function has a floating type, a swing door type, or a simple spring type (for example, Japanese Utility Model Laid-Open No. 63-181411). ) Etc. were known.

However, the source pressure of the water varies depending on the place where the household water purifier is used, and the supply flow rate varies greatly depending on the opening of the faucet. Measurement was inaccurate. For this reason, when the water purifier was initially used, it was easy for water to flow at an appropriate flow rate or more, and water that was insufficiently purified was likely to be discharged. In addition, the amount of iron rust, suspended solids, bacteria, etc. that are prevented from passing through the filtration membrane differs depending on the quality of the water supply pipe, the quality of the raw tap water, the sanitary condition of the water supply tank, etc. It is not necessarily proportional to the flow rate of the water to be treated, and it has been difficult to accurately know when to replace the filtration module due to a decrease in the flow rate due to clogging of the filtration membrane.

[0007]

[Problems to be Solved by the Invention] The purpose of the present invention is to provide a home water purifier that plays an important role in protecting the human body from contaminated drinking water and maintaining health. It is an object of the present invention to provide a household water purifier having flow rate display means for displaying an appropriate flow rate.

Another object of the present invention is to prevent early clogging of the filtration membrane and to accurately know when to replace the module when the clogging of the filtration membrane progresses and the function cannot be achieved. An object of the present invention is to provide a household water purifier having a flow rate display means effective above.

[0009]

That is, the present invention relates to a water purifier including a filtration module provided with a filtration membrane and an adsorbent, which is provided in a tubular body provided in a flow path near a purified water outlet. An annular flat plate is joined to one end of the body, the inside of the tubular body forms a purified water flow path, a spring that positions the water flow resistor in proportion to the water flow speed, and an outer surface of the tubular body. A convex lens is provided on the tube for observing the attached identification symbol from outside.
A home water purifier, characterized in that it comprises a flow display means composed of a a window.

[0010]

In the water purifier of the present invention, a water flow resistor whose position changes in proportion to the flow velocity is provided on a flow path near the purified water outlet.
It is arranged as a simple and accurate flow rate display means, and if the amount of water passing through the water purifier is within an appropriate range, a display to that effect can be observed from the window.

That is, if the amount of water passing through the water purifier exceeds an appropriate range, a warning message is displayed. In addition, when sufficient discharge flow cannot be obtained even if the opening of the faucet is increased, the filter membrane in the filtration module is clogging and the warning that the module is about to be replaced is warned. Is made.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The home water purifier of the present invention will be described in more detail with reference to the drawings.

FIG. 1 is a schematic sectional view showing an example of the flow rate display means provided in the household water purifier of the present invention. The purified water that has been subjected to the purification treatment by the filtration module in the water purifier is discharged from the discharge port, and a flow rate display means is provided near the discharge port. The flow rate display means is a water flow resistor 2 in the pipe 1.
And a spring 3 for positioning the water flow resistor in proportion to the water flow velocity, and a tube 1 for externally observing an identification symbol attached to the outer surface of the tubular body 4 of the water flow resistor 2. Window 5.

The water flow resistor 2 is disposed in the tube 1 near the discharge port of the water purifier, has a shape in which an annular flat plate 6 is joined to one end of the tube 4, and is proportional to the flow rate of the purified water. Purified water flows through the tubular body 4 and reaches the discharge port while receiving the force on the annular flat plate 6. In this example, the spring 3 is disposed between a spring stopper 7 provided in the tube 1 and the annular flat plate 6 of the water flow resistor 2, and is operated by a force proportional to the flow rate of purified water impinging on the annular flat plate 6. Shrink. The arrangement position of the spring 3 is not limited to the above-described embodiment, and it is sufficient that the position of the water flow resistor 2 can be determined according to the flow rate of the purified water. Therefore, both ends of the spring 3 may or may not be connected to the spring stopper 7 and the annular flat plate 6. In this way, the position of the water flow resistor 2 in the pipe 1 is determined according to the flow rate of the purified water.

Therefore, an identification symbol is attached to the outer surface of the tubular body 4 of the water flow resistor 2 and a window 5 for observing the identification symbol from the outside is provided. The specific position of the tubular body 4 corresponding to the above is observed from the window 5, and the identification symbol attached to the specific position is displayed on the window 5. As the identification symbol attached to the tubular body 4, various modes can be adopted. For example, the flow rate may be displayed as a numerical value, or a plurality of different colors may be added to indicate an excessive flow state, an appropriate flow state, and An underflow state, a water flow stop state, and the like due to the progress of clogging of the membrane can be displayed in different colors.

The water flow resistor 2 may be of various shapes, but in a water purifier in which the supply water flow changes in a relatively short time, an annular flat plate 6 is provided at one end of the tubular body 4 used in the present invention. A joined shape is suitable. In other words, the water flow resistor of this shape follows the change in the flow rate relatively quickly, and exhibits the characteristic that the swing under a constant flow rate state is small. When a water flow resistor of another shape is used, it is difficult to exhibit such excellent characteristics. The annular flat plate 6 preferably has a shape having one through hole at the center, but may have a symmetrical arrangement of a plurality of through holes at the center. The diameter of the central through-hole of the annular flat plate 6 is preferably slightly smaller than the inner diameter of the tubular body 4.

The selection of the strength of the spring 3 for positioning the water flow resistor 2 is important, and the difference between the position of the water flow resistor 2 when the water flow is stopped and when the flow is excessive is 12 to 40 m.
It is preferable to select so as to be about m. If the strength of the spring 3 is too strong, a change in the position of the water flow resistor 2 becomes small, and it is difficult to identify a change in the flow rate. On the other hand, if the strength of the spring 3 is too weak, the swing of the position of the water flow resistor increases, and in this case, it is also difficult to accurately identify the flow rate.

As the spring stopper 7, a projection may be provided in the tube 1 and used, or a portion where the diameter of the tube 1 changes may be used.

The window 5 for observing the flow rate identification symbol attached to the outer surface of the tubular body 4 can be arranged in various modes. If the length in the longitudinal direction of the tubular body is relatively short, it is possible to correctly read the flow state even if the position fluctuation of the water flow resistor 2 is small. For example, when the length of the window 5 in the longitudinal direction of the tubular body is 20 mm or less, preferably 16 mm or less, more preferably 14 mm or less, and a convex lens is disposed as a transparent cover on the window 5, the user of the water purifier can reduce the flow rate state. This is a preferred embodiment of the present invention because it can be clearly identified.

The tube 1, on which the window 5 is provided, the transparent cover of the window 5, the water flow resistor 2, and the like, which constitute these flow rate display means, are provided in the flow path near the outlet of the purified water. So
In order to prevent reverse contamination from the discharge port, it is preferable to be made of a plastic material mixed with an antibacterial agent.

As the filtration module used in the water purifier of the present invention, any known filtration module having an adsorbent such as activated carbon, activated carbon impregnated with silver or serpentine and a filtration membrane such as a flat membrane or a hollow fiber membrane can be used. Can be used. As a filtration membrane, it can block the passage of bacteria, etc.
A filtration membrane having a transmittance of 1 liter / m ² · min or more at a water pressure of / cm ² is preferred. Examples of the material for the filtration membrane include various materials such as cellulose, polyolefin, polysulfone, polyvinyl alcohol, and PMMA. A particularly preferable example of such a filtration membrane is a polyolefin-based porous hollow fiber membrane that has been subjected to a hydrophilic treatment.

[0022]

According to the water purifier of the present invention, the flow rate of water discharged from the water purifier can be accurately grasped, and whether or not the amount of water flowing into the water purifier is within an appropriate range can be determined instantaneously. Can be. If the flow rate of purified water does not reach the appropriate range even if the opening of the faucet is increased, a message to that effect is displayed, so it is easy for the filter membrane to become clogged and it is time to replace the module. Known to.

[Brief description of the drawings]

FIG. 1 is a schematic cross-sectional view showing an example of a flow rate display means provided in the water purifier of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pipe 2 Water flow resistance 3 Spring 4 Tubular body 5 Window 6 Ring flat plate 7 Spring stop

Continuing on the front page (72) The creator, Manabu Yano 2-39-1 Kyobashi, Chuo-ku, Tokyo Inside Mitsubishi Rayon Co., Ltd. (72) The creator Atsuko Owada 2-3-119 Kyobashi, Chuo-ku, Tokyo Mitsubishi Rayon Co., Ltd. (72) Inventor Masateru Kabata 715, Mitsushima, Kazumasa, Osaka Prefecture, Japan Daisei Seisakusho Co., Ltd. (72) Inventor Shoichi Naka 56) References JP-A-62-148919 (JP, A) JP-A-3-127680 (JP, A) Fully open 48-10058 (JP, U) Fully open 49-81171 (JP, U) Fully open Hei 5-28486 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) C02F 1/28

Claims (2)

(57) [Scope of request for utility model registration] In a water purifier including a filtration module having a filtration membrane and an adsorbent, an annular flat plate is joined to one end of a tubular body provided in a tube constituting a flow path near a purified water outlet. The inside of the tubular body forms a purified water flow path, the spring that positions the water flow resistor in proportion to the water flow velocity, and the identification symbol attached to the outside of the tubular body for external observation. the convex provided in the tubular body
A household water purifier comprising a flow rate display means comprising a window provided with a lens . 2. The length of the window in the longitudinal direction of the tubular body is 2
Household water purifiers of claim 1, wherein the this is 0mm or less.