CN1191765A - Water Purifier - Google Patents

Abstract

A water purifier has a hot water backflow preventing assembly in a hose. The hot water backflow prevention assembly includes a pipe plug and a ball. When the clean water in the clean water storage tank flows into the hot water container, the ball moves upward under the pressure of the water and touches the pipe plug, opening a passage of the hose to The water flows smoothly, and when the supply of clean water is completed, the ball moves down due to its own weight, closing the passage of the hose and preventing the return of clean water to the clean water storage tank.

Description

Water Purifier

The present invention relates to a reverse osmosis water purifier for providing drinking water from which harmful and undesirable impurities have been removed or neutralized. More particularly, the present invention relates to a water purifier capable of preventing clean water in a hot water tank from flowing back into a clean water storage tank.

Conventional techniques are described below with reference to the accompanying drawings.

Generally, water purifiers are used to provide clean water after removing various harmful substances contained in fresh water.

According to the purification method, this water purifier can be divided into natural filter type, direct filter type, ion exchange type and reverse osmosis type and so on. In particular, a reverse osmosis type water purifier applies a certain pressure to fresh water to pass through an artificial semi-permeable membrane, thereby purifying the water. The water purifier then separates and removes heavy metals, bacteria, carcinogens, etc., while allowing only pure water and the oxygen dissolved in it to pass through. Water purifiers have been used in high-tech or precision industries, for cleaning electronic components or for medical treatment in hospitals, and in recent years have been used to provide portable water for homes and shops.

A kind of commonly used reverse osmosis type water purifier, as shown in Figure 1, it comprises a clean water storage tank 10; The clean water of the clean water storage tank 10; a hot water container 30 is installed as high as the clean water storage tank; a connecting hose 40 is connected with the clean water storage tank 10 and the hot water container 30, and the clean water can be The clean water in the storage tank 10 is sent to the hot water container 30; and a solenoid valve 50 is connected to the flexible pipe 40, and controls the solenoid valve according to the electronic control signal to prevent the clean water in the hot water container 30 from flowing back. Go in clean water storage tank 10.

But, in order to prevent the clean water in the hot water container 30 from flowing back in the clean water storage tank 10, a conventional water purifier is equipped with a solenoid valve 50 in the middle of the connecting hose 40. This structure complicates the electronic circuit and construction of the water purifier, causing an increase in the total production cost, thus being unfavorable for production.

The two ends of the connecting hose 40 are connected to the bottom of the clean water storage tank 10 and the hot water container 30, and the clean water flows into the hot water container 30 through the connecting hose 40 from the clean water storage tank 10, and cannot resist acting on the inside of the hot water container 30. The pressure of the water, so the flow rate is very slow.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a water purifier that substantially obviates one or more of the disadvantages and limitations of the related art.

An object of the present invention is to provide a water purifier including a hot water backflow prevention assembly, which is reasonable in production cost, simple in structure, does not require electronic circuits, and can be installed in the hose connecting the clean water storage tank and the hot water container on, which is conducive to production.

Another object of the present invention is to provide a water purifier with an improved hose connecting the clean water storage tank and the hot water container, when the clean water in the clean water storage tank is supplied to the hot water container through the connecting hose, no It is necessary to receive the pressure of the water acting on the inside of the hot water container, and allow clean water to flow smoothly into the hot water container.

Additional advantages and features of the invention will be set forth in the description which follows, or will be shown in part in the description, or will be learned by practice of the invention. The objectives and other advantages of the present invention can be recognized and realized from the structure of the device particularly pointed out in the specification, claims and accompanying drawings.

According to the purpose of the present invention, in order to realize the various advantages of the present invention, as an embodiment and a general description, the present invention discloses a water purifier with a hot water backflow prevention assembly on the hose, which can be used to The clean water in the clean water storage tank flows into the hot water container. The hot water backflow prevention assembly includes a pipe plug inside the enlarged portion on the vertical line of the hose; a ball in the enlarged portion of the pipe utilizes the force of the The water pressure makes the ball move up to touch the plug and open a passage in the hose to allow water to flow through smoothly. When the clean water supply is completed, due to its own weight, the ball moves down to close the passage of the hose to Prevent clean water from flowing back into the clean water storage tank.

It is to be understood that both the foregoing general description and the following detailed description are to be regarded as exemplary and explanatory, and the following claims are further elucidated.

The accompanying drawings contain a further understanding of the present invention, and include and constitute a part of the description of the present invention, represent embodiments of the invention, and explain the principle of the invention together with the description:

In the attached picture:

Fig. 1 is a sectional view of a conventional water purifier;

Fig. 2 is the perspective view of the general structure of water purifier of the present invention;

Fig. 3 is the interior perspective view of water purifier of the present invention;

Fig. 4 is an exploded perspective view of parts inside the water purifier of the present invention;

Fig. 5 is the sectional view of water purifier of the present invention;

Figure 6 is an exploded perspective view of a hot water backflow prevention assembly of the present invention with a ball and a plug; and

7A and 7B are sectional views showing the operation of the hot water backflow prevention assembly of the present invention.

With careful reference to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings.

As shown in FIGS. 2 to 7, the water purifier includes a chassis 210, which guides external air to a designated portion inside a main body 200 on which various components are mounted, first and second brackets 260 and 270 each All are vertically installed on both sides of the chassis 210 at the same height, so the front panel 220, the rear panel 230, the first and second side wall panels 240 and 250, and the upper panel 190 connect them to the first through several joining processes. , the second brackets 260 and 270 are connected. The water purifier also includes a middle plate 280 installed at a middle portion relative to the first bracket 260 and the second bracket 270, thereby forming upper and lower spaces K and L, each having a predetermined area.

A bell mouth 211 is formed in the middle of the chassis 210, and it extends upward to a predetermined height so that when outside air enters the main body 200, the air flow is directed to a point, and a fan is screwed inside the bell mouth 211. A sterilizing filter, a compression pump, a discharge control valve and a transformer placed at a predetermined height are provided around the bell mouth 211, thereby preventing short circuit and submersion.

A convex portion 221 is integrally formed on the front panel 220 on which a control panel 290 and a main printed circuit board (not shown) are disposed. There is a button 310 in the lower part of the convex portion 221. Once the button is pressed by a finger or a glass sheet, a water diversion hole (described in detail below) will be connected by an electronic device to open a water circuit (such as cold water, hot water or clean water), thus sending out the water. If the button 310 is released, the water distribution hole is cut off by the electronics, and the water circuit is closed, thus stopping the dispensing of water. A detachable water bucket 320 is installed below the button 310, which is used to collect the waste water falling from the water diversion port after the water diversion, and can be sent to the outside immediately.

A clean water storage tank 330 is fixed on the middle plate 280 with a fastening screw, which can store a certain amount of clean water. One side of the clean water storage tank 330 is provided with a detachable filter part 350 through the filter bracket 340, and the filter bracket is connected with the second bracket 270 and the middle plate 280, so that harmful impurities in the tap water can be removed. On the other side of the clean water storage tank 330, a hot water container 360 is connected on the middle plate 280 with fastening screws. The hot water container 360 is supplied with a certain volume of clean water from the clean water storage tank 330, and keeps the clean water at a high temperature with a heater (not shown). The clean water storage tank 330 includes a tank body 331 with an upper opening, and a lid 332 covering the upper opening of the tank body 331 .

There is a hole 333 on the side upper part of the tank body 331, through which the water filtered by the filter member 350 enters the inside of the tank body 331 through it and the first connecting hose 370, or the purified water rises above a certain water level in the tank body 331 through it It is discharged through the second connecting hose 371. There is also a first outlet 334 at the front lower part of the tank body 331 . It can make the clean water in the tank body 331 flow to the outside through the third connecting hose 372 . There is also a second outlet 335 at the rear lower part of the tank body 331 , and the clean water in the tank body 331 flows into the hot water container 360 through the fourth connecting hose 373 . In addition, there is a third outlet 336 in the middle of the bottom of the tank, which is used to make the clean water in the tank 331 flow into the cold water container 450 (described in detail below).

On the cover 332 there is a vertically installed water surface sensor 380, which detects the water surface of the clean water in the tank body 331 in multiple stages. A sterilizing lamp 390 is vertically inserted into the cold water container 450 through the clean water storage tank 330 so that the clean water in the clean water storage tank 330 and the cold water container 450 is sterilized for the second time.

There is a hot water backflow preventing assembly 300 on a predetermined position of the fourth connecting hose 373, which can make the clean water in the clean water storage tank 330 be delivered to the hot water container 360 through the fourth connecting hose 373, but prevent backflow To the clean water storage tank 330.

6 and 7 show that the clean water storage tank 330 includes a pipe enlargement 373a, which is positioned at a predetermined position on the vertical line of the fourth connection hose 373, and the pipe plug 302 is positioned at the top of the pipe enlargement 373a, so that the clean water can Flowing up and down, a ball 303 is seated in the pipe enlargement 373a, and when the clean water in the clean water container 330 is supplied to the hot water container 360, the water pressure generated moves the ball upward, and when it touches the pipe plug 302 , stop moving upwards to make the water flow unimpeded, after the clean water in the clean water storage tank 330 is sent to the hot water container 360 completely, it moves downward due to its own weight, blocking the upper passage of the fourth connecting hose 373, Thus, backflow of clean water is prevented.

One side of the fourth connection hose 373 is installed at the predetermined height of the side wall of the hot water container 360, and the other side is connected at the predetermined height of the side wall of the clean water storage tank 330, so that the clean water in the clean water storage tank 330 overcomes the The water pressure enters the hot water container 360 smoothly through the fourth connecting hose 373 . In the middle of the pipe plug 302, there is a hole 302a. When the ball 303 moves upward due to water pressure, it will not block the upper passage of the pipe enlargement part 373a. A plurality of grooves 302b are arranged around the inside of the hole 302a, spaced apart from each other. A certain distance allows the clean water in the clean water storage tank 330 to flow into the hot water container 360 smoothly. The material from which ball 303 is made has a density greater than that of water.

The filter bracket 340 is bent into a  shape, its top and the front and rear of the corresponding second support 270 top are connected together with a screw, and its bottom is connected with a side of the middle plate 280 with a screw.

The filter unit 250 includes a sediment filter 351, which is replaceably mounted to the bottom of the filter bracket 340, and is used to remove suspended solids including rust in tap water; a pretreatment filter 352, which is replaced by the filter bracket 340 Installed beside the upper sediment filter 351, it is used to remove impurities such as chlorides in the tap water introduced by the sediment filter 351. The filter unit 350 also includes a membrane filter 353, which is replaceably arranged at the bottom of the filter bracket 340, pressurized by a compression pump installed on one side of the chassis 210, and removes heavy metals in the water supplied by the pretreatment filter 325 and carcinogens; an aftertreatment filter is replaceably installed next to the membrane filter 353 by the filter bracket 340, so that adsorption and elimination of various odors and toxic gases in the water from the membrane filter 353; and a The sanitizing filter 355, which is installed on one side of the chassis 210, sanitizes the water from the post-treatment filter 354, and then sends the water to the clean water storage tank 330.

The sediment filter 351 , the pretreatment filter 352 , the reverse osmosis filter 353 , the posttreatment filter 354 , the disinfection filter 355 and the compression pump 400 are all connected by the fifth connection hose 374 . There is a concentrated water pipe 410 on the lower side of the reverse osmosis filter 353 for discharging the concentrated water produced by passing through the reverse osmosis filter 353 .

The cold water container 450 is screwed in the middle of the bottom of the middle plate 280 for storing a predetermined amount of purified water from the purified water storage tank 330, and the purified water is kept at a low temperature using a heat exchanger 490. Below the cold water container 450 are installed a sterilizing filter 355 , a compression pump 400 , a drain control valve 460 , a fan 470 and a transformer 480 .

The heat exchanger 490 is connected to the bottom of the cold water container 450, so that the heat of the clean water in the cold water container 450 is transmitted to keep it cold. A switch power supply 500 is installed on its outer wall, and a concentrated water volume control valve 510 is set. At the corner of the outer wall of the cold water container 450.

One side of the cold water container 450 top is equipped with a temperature sensing rod 520, and it is inserted in the cold water container 450, is used for keeping the temperature of cold water between the upper and lower water surfaces of the cold water.

The heat exchanger 490 includes a cooling heat fin 491, which is exposed outward through the bottom of the cold water container 450, and is in contact with the clean water in the cold water container 450; Under the cold water container 450, a heat sink 495 is fastened to the heat transfer assembly 492 with a plurality of first and second fastening screws 493a and 493b at a predetermined pressure. A plurality of grooves 491a and 495a are mounted on the top of the cooling fin 491 and the bottom of the heat sink 495, respectively.

Figure 4 shows that a valve bracket 281 is integrally formed in front of the middle plate 280 for supporting the first to third electronic valves 530, 532 and 532 respectively. 330 , the water flowing out from the hot water container 360 and the cold water container 450 . One side of the corresponding first to third electronic valves 530, 531 and 532 are respectively connected to the drain hoses 540, 541 and 542, and the water is supplied from the first outlet 334 of the clean water storage tank 330 and the hot water container 360 and the cold water container. The outlet of 450 (not shown) flows out through these drains. A water distribution hose 550 is connected to the other side of each of the first to third electronic valves 530, 531 and 532, from the clean water storage tank 330, the hot water container 360 and the cold water container 450 through the first to third electronic valves. The water that 530, 531 and 532 flow out flows to a point through this pipe.

The following description relates to the operation and advantages of the present invention.

If a tap water switch (not shown) is connected on the water purifier of the present invention, and it is opened, then utilize the pressure that tap water is subjected to and the pressure that operation compression pump 400 produces, the tap water that flows through filter element 350 is by Purify.

When the tap water flows through the sediment filter 351, the suspended impurities in the tap water are removed. The water then passes through a pre-treatment filter 352 where chemicals such as chlorides are removed from the water. After pretreatment, the water enters the reverse osmosis filter 353, so heavy metals and carcinogens in the water are removed. Then, the water coming out of the reverse osmosis filter 353 enters the aftertreatment filter 354 to remove peculiar smell and poisonous gas. The sanitizing filter 355 first sanitizes the water from the post-treatment filter 354 . Then the water is supplied to the clean water storage tank 330 through the first connecting hose 370 connected to the upper part of the clean water storage tank 330, as shown in FIG. 5 . A part of the clean water supplied to the clean water storage tank 330 is sent to the hot water tank 360 to reach its predetermined water surface and clean water through the fourth connection hose 373 connected to the clean water storage tank 330 rear portion and the hot water container 360 rear portion. The water level in the water storage tank 330 is the same time. In addition, a part of the clean water fills the cold water container 450 through the third outlet 336 at the bottom of the clean water storage tank 330 . Once the water in the clean water storage tank 330 and the hot and cold water containers 360 and 450 has reached the predetermined water level, according to the vertically installed on the clean water storage tank 330 lid 332, it is used for multi-stage detection of the clean water level. With the signal output from the sensor 380, the operation of the compression pump 400 is stopped, and the supply of tap water is cut off at the same time.

If each water level of the clean water storage tank 330 and the hot and cold water containers 360 and 450 is lowered, the water level sensor 380 detects the water level of each container in multiple stages, and the measured water level is used on the control panel 290 of the front panel 220. The main printed circuit board is shown. That is, this display tells the user the volume of water used so far.

When the clean water in the clean water storage tank 330 and the cold water container 450 is sent out, if its water level is lower than the water level of the hot water container 360, that is, when the water stops flowing to the hot water container 360 from the clean water storage tank 330, the seat The ball 303 in the enlarged part 373a of the fourth connecting hose 373 then moves downward due to its own weight, acting on the pressure of the water in the hot water container 360, making it contact the fourth connecting hose 373, thereby blocking the The fourth connects the upper channel of the hose 373, and prevents the backflow of clean water.

When the clean water in the clean water storage tank 330 is supplied into the hot water container 360, the ball 303 moves upward due to the pressure of the water, as shown in FIG. 7A, and stops on the hole 302a of the pipe plug 302. Therefore, since the ball 303 is not in contact with the inner periphery of the fourth connection hose 373, the clean water flows into the hot water container 360 through the plurality of grooves located at the inner periphery of the hole 302a.

One side of the fourth connection hose 373 is installed at the predetermined height on the side wall of the hot water container 360, and the other side is installed at the predetermined height on the side wall of the clean water storage tank 330, so that the clean water in the clean water storage tank 330 Water enters the hot water container 360 smoothly through the fourth connecting hose 373 against the pressure of the water.

The disinfection lamp 390 installed vertically on the lid 332 of the clean water storage tank 330 has a pointed tip that is vertically put into the cold water container 450 by the third outlet 336. The water is disinfected a second time. The infrared rays produced by the disinfection lamp 390 are projected onto the clean water in the clean water storage tank 330 and the cold water container 450, effectively suppressing the reproduction of microorganisms that may exist when the water is stored in the clean water storage tank 330 for a long time without being released.

If the heater (not shown) that is arranged on the hot water container 360 starts working, it will be heated to a predetermined temperature by electric current, thereby transfer heat to the clean water in the hot water container 360.

After the fan 470 and the heat transfer assembly 492 of the heat exchanger 490 start to work, the motor 471 of the fan 470 drives the fan 472 to rotate. Due to the rotation of the fan 472, external air flows into the main body 200 through the bell mouth 211 in the middle of the chassis 210, thus The heat sink 495 directly hits the heat exchanger 490 . The external air cools the cooling device 495, and according to the characteristics of the heat transfer assembly 492, the cooling cycle of radiating heat to the outside is repeated, and passed to the cooling fins 491, and the clean water in the cold water container 450 is cooled.

When the user is going to put the cold water or hot water in the cold or hot water container 450 or 360 into the glass, he should press the button of purifying water and press the power button of the control panel 290 on the front panel 220 at the same time , put the glass directly below the water delivery hose 550, and then push the button 310 located at the bottom of the front panel 220.

When the button 310 moves backward, a movable contact and a fixed contact (not shown) inside the button send an ON signal to a microcomputer (not shown), and the microcomputer interprets the input signal , and operate the first electronic valve 530 according to the input program, thus opening the waterway. After the waterway is opened, the clean water in the clean water storage tank 330 flows through the water distribution hose 540 connecting the first electronic valve 530 and the clean water storage tank 330, and flows into the glass through the water distribution hose 550 connected to the first electronic valve 530. in the cup. The waste water collected in the bucket 320 during the water supply process is discharged through a water pipe (not shown) connecting the bucket 320 and the drain control valve 460 .

According to the water purifier of the present invention, the hose connecting the clean water storage tank and the hot water container has a hot water backflow prevention assembly on its vertical line, which includes a pipe plug and a ball, and the ball can move up and down so as to open and Closes the waterway for the hose, thus reducing production costs. The hot water backflow prevention assembly of the present invention has a simple structure and does not need any electronic circuit.

In addition, the inlet and outlet of the hose are respectively connected to a certain height of the side walls of the clean water storage tank and the hot water container, so that the clean water in the clean water storage tank flows into the hot water container through the hose without bearing Water pressure in the hot water container.

For those experienced in the technical field, it is obvious that various modifications and changes can be made to the water purifier of the present invention without departing from the essence and scope of the present invention. Therefore, the present invention also includes the modifications and changes made to the present invention if these modifications and changes do not exceed the contents of the appended claims and their equivalents.

Claims (5)

1. the water purifier that has hot water backflow prevention device on flexible pipe is used for making the water purification of water purification basin to flow into a water-heater through flexible pipe, and said hot water backflow prevention device comprises:

Blocking device is arranged in the inside of the expansion section s of pipe on the vertical line of flexible pipe;

A ball, place the expansion section s of pipe, when the water purification in the water purification basin is conducted in the hot water vessel, owing to act on the pressure of the water to the hot water vessel, the ball contact blocking device that moves up is opened a passage water is flowed unobstructedly on flexible pipe, perhaps after the water purifying supply is finished, because the weight of ball moves down it, closes the passage of flexible pipe, is back in the water purification basin to prevent water purification.

2. water purifier as claimed in claim 1, wherein, blocking device is included in the passageway of blocking device intermediate formation, moves up the upwards path of the expansion section s of sealed tube in order to prevent ball to be subjected to the pressure of water.

3. water purifier as claimed in claim 1, wherein, ball is to make with the density material bigger than water.

4. water purifier as claimed in claim 1, wherein, blocking device forms with the expansion section s of pipe is whole in flexible pipe.

5. water purifier as claimed in claim 1, wherein, one side of flexible pipe is connected on the hot water vessel sidewall to predetermined height from its bottom, and opposite side is connected on the water purification basin sidewall from its bottom to predetermined height, thereby makes water purification in the water purification basin overcome unobstructed the flowing in the hot water vessel of pressure of water.

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