JPH0518692U - Water purifier - Google Patents

Abstract

(57) [Abstract] [Purpose] When hot water is switched to cold water, the hot water is prevented from flowing to the water purifying unit, and moreover, a means is provided for allowing the cold water to quickly flow to the water purifying unit. [Composition] A water purifier equipped with valve mechanisms (21, 25) for preventing hot water from flowing into the water purification units (11, 14) made of activated carbon or the like, for removing residual hot water in the valve mechanism and / or upstream of the valve mechanism. Hot water draining means 21, 23, 24, 2
8 and 30 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a water purifier, and more specifically, a means for preventing hot water in a water passage from flowing to a water purifying section and elution-deteriorating a water purifying means such as activated carbon or a hollow fiber membrane provided in the water purifying section. Regarding the structure of the water purifier provided.

[0002]

[Prior Art]

 In recent years, water purifiers for purifying raw water such as tap water have been gradually spread in homes and offices. This kind of water purifier is provided with a water purification unit equipped with water purification means such as activated carbon and hollow fiber membranes. By passing the raw water through this water purification unit, the raw water is purified.

Further, as this kind of water purifier, a valve mechanism that prevents hot water from flowing into the water purification unit is provided upstream of the water purification unit, and hot water is erroneously flowed to the water purification unit to elute the antibacterial agent contained in the water purification means. It is known that the hollow fiber membrane is prevented from being deteriorated. This kind of valve mechanism is generally constructed by combining a coil spring made of a shape memory alloy and a valve body, and the coil spring is expanded and contracted by the change of the water temperature flowing through the water passage to operate the valve body, thereby warming the hot water. Is prevented from flowing into the water purification section.

[0004]

[Problems to be solved by the device]

 However, in the above-mentioned conventional means, when the hot water is switched to the cold water, the spring force of the coil spring made of the shape memory alloy is not weakened promptly due to the heat retaining effect of the hot water remaining in the valve mechanism and upstream thereof. The mechanism keeps the water stopped for a while, and the cold water (purified water) is not discharged from the water purifier during that time. Therefore, the user cannot immediately use the water purifier, and it is easy to mistakenly think that a trouble has occurred in the water purifier. There was a point. Then, this invention aims at providing the water purifier which can eliminate the problem of the said conventional means.

[0005]

[Means for Solving the Problems]

 To this end, the present invention is provided with hot water draining means 21, 23, 24, 28, 30 for draining hot water accumulated in the valve mechanisms 21, 25 and / or upstream thereof.

[0006]

[Action]

 According to the above configuration, the shape-memory spring material 24 interposed in the valve mechanism can be quickly cooled by draining warm water, the user can accelerate the use of the water purifier, and the water purifier causes trouble. There is no mistaken recognition that it is.

[0007]

【Example】

 (Embodiment 1) Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan sectional view showing the inside of the water purifier. Reference numeral 1 denotes a main body case, and a mounting portion 2 provided on the upper surface thereof is mounted on a raw water supply portion such as a tap of a water supply. A slider 3 is disposed in the body case 1 so as to be slidable in the lateral direction N. Valve bodies 4, 5 and 6 having a U-shaped cross section are mounted on the peripheral surface of the slider 3, and the slider 3 is moved laterally by operating the operation lever 9 provided on the side portion of the main body case 1. Sliding in the direction N switches the modes such as purified water, raw water straight, and raw water shower.

Reference numeral 14 is a first water purification unit, in which activated carbon 15 containing an antibacterial agent is stored. Reference numeral 11 denotes a second water purification unit, which is configured by housing the hollow fiber membrane 13 inside the cartridge 12. The raw water that has passed through the first water purification unit 14 flows into the cartridge 12, is purified by the hollow fiber membrane 13, and is then discharged from the drainage unit 16.

FIG. 2 is a sectional view taken along the line AA in FIG. 1. Next, the water passage will be described with reference to FIG. Reference numeral 21 is a valve piece provided on the inflow side, and 22 is a valve body provided on the outflow side. Coil springs 23 and 24 are provided on both sides of the valve piece 21. One coil spring 24 is made of a shape memory material. Regarding the relationship between the spring forces of the coil springs 23 and 24, the spring force of the coil spring 23 is stronger at room temperature to open the water passage, but at high temperature, the spring force of the coil spring 24 is stronger and the valve piece 21 is pressed against the valve seat 25 to close the water passage. Further, the valve piece 21 holds the ball valve 30. The ball valve 30 opens and closes the discharge part 28 for draining hot water. The above-mentioned components 21, 23, 24, 28, 30 constitute hot water draining means. The second valve body 22 is pressed against the valve seat 27 by the coil spring 26. The discharge part 28 is provided between the valve piece 21 and the valve body 22, and a water inlet 29 communicating with the water purification part 14 is provided on a side portion of the valve body 22.

Reference numeral 31 is a safety valve element provided on the upstream side of the valve piece 21, and is pressed against a valve seat 33 by a coil spring 32. When the internal pressure of the water passage becomes abnormally high, the valve body 31 separates from the valve seat 33, and the water inside is drained from the drain port 34. Reference numeral 35 denotes a negative pressure preventing valve element provided between the valve piece 21 and the valve element 22, and when the space T1 between the valve elements 21 and 22 becomes negative pressure, the valve hole 36 is opened to open the outside air. It is introduced into the space T1.

In the above structure, when the operating lever 9 is operated to slide the slider 3 to the right in FIG. 1, the valve body 22 is pushed to the left by the water pressure in FIG. 27, the raw water flows in the direction of the arrow N1 and flows to the water purification units 14 and 11, and the purified water purified is discharged from the drainage unit 16. At this time, the ball valve 30 closes the discharge part 28 with a strong force by the water pressure (see the chain line in FIG. 2). By the way, in a conventional water purifier having a valve mechanism for preventing hot water inflow, since hot water remains in the spaces T1 and T2, the spaces T1 and T2 are kept in a high temperature state for a while for the effect of keeping warm water. The coil spring 24 which is held and made of a shape memory material cannot be swiftly contracted. Therefore, the valve piece 21 holds the valve seat 25 in a pressed state for a long time, the raw water cannot quickly flow toward the water purifying unit 14 in the direction of the arrow N1, and the purified water is not discharged from the drainage unit 16. Mistakenly recognizes that a problem has occurred. On the other hand, in this water purifier, the valve mechanism that prevents the inflow of hot water to the water purifier 14 side is provided with the hot water draining means, so if the user mistakenly causes the hot water to flow through the water passage, it will be composed of a shape memory material. The coil spring 24 expands, the valve piece 21 moves to the right, and the valve piece 21 comes into close contact with the valve seat 25 to stop the flow of warm water and prevent it from flowing into the water purification section, and at the same time, the ball valve. 30 opens the discharge part 28 (refer to the solid line in FIG. 2). Therefore, the hot water remaining in the space T 1 is quickly discharged from the discharge part 28, so that the temperature of the space T 1 is rapidly lowered, the coil spring 24 is immediately compressed by the spring force of the coil spring 23, and the ball valve 30 is discharged. The portion 28 is quickly closed, and the cold water flows toward the purified water portion 14 as indicated by the arrow N1, and the purified water is discharged from the drainage portion 16. Therefore, unlike the conventional method, the user does not mistakenly think that a trouble has occurred.

It should be noted that when the valve piece 21 is moved to the right by switching from cold water to warm water, the inside of the space T1 becomes slightly negative pressure state, the valve body 35 opens, and the external air flows into the space T1. Since it enters, the coiled spring 24 can be quickly air-cooled and contracted by the inflowing cold outside air.

As described above, according to the present means, the warm water remaining in the space T1 is immediately discharged, so that the coil spring 24 is quickly cooled and contracted, and the user can accelerate the use of the water purifier. You can do it, and you will not be mistaken for trouble.

Second Embodiment In FIG. 3, a hot water draining means 41 for manual operation is provided in a space T2 on the upstream side of the valve piece 21. This means 41 is provided with a shaft 42 that penetrates the case 40, a coil spring 43 that repels the shaft 42, and a valve body 44 that is provided at the lower end of the shaft 42 and that opens and closes a valve hole 45 for draining hot water. When the pressing portion 46 at the upper end of the shaft 42 is pressed, the shaft 42 descends and opens the valve hole 45. Reference numeral 47 is a temperature-sensitive label attached to the pressing portion 46.

Therefore, when the hot water is switched to the cold water, if the pressing portion 46 is pressed to open the valve hole 45, the hot water remaining in the space T2 is drained from the valve hole 45 and the spring 24 is quickly cooled. As a result, the same operational effect as that of the above-described first embodiment can be obtained. The temperature-sensitive label 47 is for visually recognizing the temperature in the space T2, and the sticking position thereof is arbitrary, but the shaft 42 is formed on the shaft 42 by a metal or the like having good heat conductivity. If it is attached, the temperature change in the space T2 can be quickly visually recognized. Such a manual type hot water draining means may be provided at two places in both spaces T1 and T2, or one space T1 is provided with the automatic hot water draining means of the first embodiment and the other space T2 is provided. The manual hot water draining means of Example 2 may be provided, and the manual operating means may be a pressing operation, a withdrawing operation, or a rotating operation, and various designs are possible. In addition, although the above-described embodiment has been described by taking the water purifier of a type that is attached to a faucet or the like as an example, it can be applied to a stationary water purifier.

[0016]

[Effect of the device]

 As described above, the present invention is provided with the valve mechanism for preventing hot water inflow and / or the hot water draining means 21, 23, 24, 28, 30 for discharging hot water accumulated upstream thereof, so that the user can The use of the water purifier can be accelerated, and there is no misunderstanding that a trouble has occurred.

[Brief description of drawings]

FIG. 1 is a plan sectional view of a water purifier according to the present invention.

FIG. 2 is a sectional view of a water passage of a water purifier according to the present invention.

FIG. 3 is a sectional view of another embodiment.

[Explanation of symbols]

 11, 14 Water purification section 21, 23, 24, 28, 30, 41 Hot water draining means 21, 25 Valve mechanism 24 Shape memory spring material

Claims (1)

[Scope of utility model registration request] 1. A water purifier equipped with valve mechanisms (21, 25) made of a shape memory spring material (24) for preventing hot water from flowing into the water purification units (11, 14) made of activated carbon or the like. A water purifier characterized by comprising hot water draining means 21, 23, 24, 28, 30 for draining residual hot water on the upstream side.