CN1192425A - water purifier - Google Patents

Abstract

A water purifier, comprising a purified water container for storing purified water, a cold water container for storing cold water after cooling the purified water, and a hot water container for storing hot water after heating the purified water, wherein the water purifier The drainage device includes: a key input device, which is used to select hot water and cold water and is used to input a key signal to discharge the relevant water therefrom; a drain valve is used to selectively discharge hot water or cold water according to the key signal; and a control The device is used to distinguish whether the hot or cold water selection switch is turned off and controls the opening or closing of the drain valve to discharge hot or cold water through the hot or cold water container.

Description

water purifier

The present invention relates to a water purifier (for example, a hot water and cold water purifier) capable of filtering many harmful substances contained in tap water, and more particularly to a water purifier drain device which can be used as a water purifier for hot water and cold water. When the selector switch is turned off for a long time, the cold water and hot water stored in the cold water and hot water containers, respectively, are prevented from going bad.

A conventional technique is described below with reference to the accompanying drawings. Generally, a water purifier is used to remove various harmful substances contained in fresh tap water and thereby provide purified water.

Such a water purifier can be classified into a natural filtration type, a direct filtration type, an ion exchange type, a reverse osmosis type, etc. according to a purification method. In particular, reverse osmosis type water purifiers apply pressure to fresh tap water to pass through an artificial semipermeable membrane to purify the water.

The water purifier then isolates and removes heavy metals, bacteria, carcinogens, etc., while allowing only pure water and dissolved oxygen to pass through. Water purifiers have been used in high-tech or precision industries to clean electronic components or in hospitals for medical purposes, and in recent years to provide portable water for homes or shops.

As shown in Figures 1 to 4, an invention patent for a water purifier has been proposed by the applicant of the present invention in No.96-16753 (proposed on May 17, 1996). As shown in Figures 1 to 3, the water purifier includes a front panel 11, a rear panel 12, two side panels 13, a top panel 14 and a bottom panel 15, which are fixedly installed accordingly.

Simultaneously, a bucket 16 is contained in the front panel 11 middle part, in order to collect the water drop that drips from the drain valve that will be described below, in order to manually or automatically drain water simultaneously.

The main body 10 is equipped with first and second cabinet partitions 20 and 21 horizontally placed at respective predetermined heights to form spaces E and F of a certain size at its upper and lower parts, and the third cabinet partition 22 is vertical. Placed to form a space G of a certain size at the rear of the first and second partition boards, the fourth partition board 23 is placed horizontally at a predetermined height in front of the third cabinet partition board 22 for Spaces H and I of a certain size are formed at upper and lower portions between the first and second partition plates 20 and 21 .

Meanwhile, a purified water container 30 is installed in the space E of the first cabinet divider 20 to store a certain amount of purified water, and a main printed circuit board (PCB) 41 is connected to the control board 40 on the front panel H on, to selectively control the product.

A compressor 50 is installed in the space F of the bottom panel 15 to compress the coolant under high temperature and high pressure, a condenser 60 is used to condense the coolant compressed by the compressor 50, and a cooling device 70 is mounted on the compressor. Between the compressor 50 and the condenser 60 to cool the heat generated by the compressor 50 and the condenser 60.

In space G, there are a plurality of replaceable filter devices 90 of a predetermined height fixed to the third cabinet divider 22 with the first and second filter fixing brackets 80 and 81, and one installed on the second cabinet. Compression pump 100 at one end of partition plate 21 .

A plurality of filter devices 90 as shown in Figure 4 comprises: a sediment filter 91 fixed with the filter fixing bracket 80, in order to remove foreign matter such as rust etc. floating on the tap water; one fixed with the first filter The fixed pre-treatment filter 92 of the bracket 80 is used to remove foreign substances such as chlorine in the tap water flowing through the sediment filter 91; the first and second membrane filters fixed by the first filter bracket 80 Devices 93 and 94 are used to remove various heavy metals and carcinogens in the tap water compressed by the compression pump 100; a post filter 95 fixed by the filter fixing bracket 80 is used to remove the first and second Taste and harmful gas in the tap water of a membrane filter 93 and 94; A sterilizing filter 96 fixed with the second filter fixing bracket 81, in order to eliminate the bacteria in the tap water, and constantly pass through the rear filter 95 supplies water to the purified water container 30 .

The sediment filter 91 , the pretreatment filter 92 , the first and second membrane filters 93 and 94 , the sterilizing filter 96 , and the compression pump 100 are respectively connected by a connecting hose 97 .

In addition, a water collecting pipe 98 is connected to the lower ends of the first and second membrane filters 93 and 94 to discharge collected water generated by water passing therethrough.

A hot water container 110 and a cold water container 120 are installed in the space H on the fourth cabinet divider 23 to provide water supplied by the purified water container 30 via the first and second purified water pipes 31 and 32. Predetermined quantities of purified water are used for heating and cooling.

At this time, as shown in FIG. 3 , the upper end of the first purified water pipe 31 is connected to the bottom end of the purified water container 30 , and its lower end is connected to the bottom end of the hot water container 110 . The second purified water pipe 32 is connected with the bottom end of the purified water container 30 at its upper end, and connected with the bottom end of the cold water container 120 at its lower end.

In addition, the hot water container 110 has an inlaid heating member 111 for receiving power and heating the purified water therein. The cold water container 120 has a spiral cooling coil 121 for exchanging heat with the coolant on its outer surface, thereby cooling the purified water therein. Drain pipes 112 and 122 are connected to upper portions of the hot and cold water containers 110 and 120 to discharge hot or cold water. Protruding drain valves 130 and 131 are used to drain hot or cold water through the front panel 11 .

An electronic box 140 is placed in the space I on the second cabinet partition 21 and exposed to one end of the two side panels 13 for driving and controlling the product.

When the water level in the purified water container 3 is lower than a predetermined water level, the water purifier takes tap water by opening a water supply valve (not shown).

When the water supply valve is opened, foreign matter such as rust floating in tap water is removed when the water flows through the sediment filter 91, and then foreign matter such as chlorine contained in the water is removed when the water flows through the pre-treatment filter 92 , various heavy metals and carcinogens in the water are removed when the water flows through the first and second membrane filters 93 and 94.

In addition, odorous and harmful gaseous elements in the water are removed when the water passes through the post-treatment filter 95 . The first disinfection of the water is done in the disinfection filter 96, and finally, the water is sent to the purified water container 30 and stored in the cold water container 120 and the hot water container 110.

When the compressor 50 is activated, the coolant is compressed into high-temperature and high-pressure gaseous coolant, and is poured into the condenser 60, where the gaseous coolant is cooled by natural convection of the external air or due to the rotation of the cooling device 70. The formed forced convection conducts heat exchange, thus becoming a liquid low-temperature high-pressure coolant. The liquid low-temperature and high-pressure coolant passes through capillary tubes (not shown in the figure) to reduce its pressure and is introduced into the cooling coil 121 .

Therefore, the low-temperature and low-pressure ice-cold coolant is evaporated and cooled to convert the purified water in the cold water tank 120 into cold water through a plurality of pipes, and the purified water in the hot water tank 110 is heated by the heater 111 to be converted into hot water. .

Then, the hot or cold water respectively stored in the hot water and cold water tanks is drained by the drain valves 130 and 131 through the drain holes.

However, a problem with conventional water purifiers is that due to incorrect operation of the selection switches for heating and cooling water, users may drink hot or cold water that has been stored for a long time, and exist in the hot water container and the cold water container respectively. If the hot or cold water in the tank is kept for too long without being drained, the water will be polluted due to the multiplication of microorganisms and bacteria.

The present invention is made to solve the above-mentioned problems. An object of the present invention is to provide a water purifier drain device for draining and purifying water by supplying water through a hot water container and a cold water container when the cold water or hot water selection switch is turned off for more than a predetermined period of time. water in the water container to prevent contamination of the water stored in the hot or cold water container.

In order to achieve the above objects, a water purifier is provided, which has a purified water container storing water purified by a plurality of filters, and a cold water container containing purified water cooled in the purified water container. a cold water container, and a hot water container that contains hot water heated to the purified water in the purified water container, wherein the drainage device of the water purifier includes:

key input means for selecting hot water and cold water and for inputting a key signal for discharging the associated water therefrom;

a drain valve for selectively draining hot or cold water in response to a key signal; and

The control device is used to recognize whether the hot water or cold water selection switch is turned off, and to control the opening and closing operation of the drain valve to discharge hot water or cold water through the hot water or cold water container.

For a fuller understanding of the nature and objects of the present invention, reference should be made to the following detailed description and accompanying drawings. Wherein: Fig. 1 is a perspective view of a traditional water purifier; Fig. 2 is a side sectional view of a traditional water purifier; Fig. 3 is a sectional view describing the front part of a traditional water purifier; Fig. 4 is a filter device described according to the prior art and a compression pump; Fig. 5 is an overall perspective view of the water purifier of the present invention; Fig. 6 is a perspective view illustrating the internal assembly structure of the water purifier of the present invention; Fig. 7 is an exploded internal part illustrating the water purifier of the present invention Perspective view; Fig. 8 is a brief longitudinal sectional view of the water purifier of the present invention; Fig. 9 is a block diagram illustrating the drainage device of the water purifier of the present invention; Fig. 10 is a specific circuit diagram of the main components of the present invention.

A specific example of the present invention is described in detail herein with reference to the accompanying drawings. Throughout all the drawings, the same reference numerals and symbols are used to denote similar or identical components or parts in order to simplify illustration and explanation, and repeated reference numerals are omitted.

As shown in Fig. 5 to Fig. 8, the water purifier provided by the present invention includes: a low plate 210, which is used to introduce external air through a predetermined position on the main body 200 of the water purifier and install a plurality of parts thereon; have the same height And the first and second support frames 260 and 270 located on both sides of the lower plate 210 are used to clamp and fix a front panel 220; a rear panel 230; side panels 250 and a plurality of engaging devices and fixing members; a fixed The intermediate plate 280 between the first and second support frames 260 and 270, thus forming upper and lower spaces K and L therebetween.

A control panel 290 is arranged on the top of the convex portion 221 of the front panel 30; a drain valve 310 is elastically installed for water supply when the pressure of the water container is electrically controlled to open the drain switch to open the water passage (for example, cold water, hot water, purified water, etc.), or to stop the water supply when the pressure disappears and the water supply valve is electrically closed to close the water channel. Water bucket 320 is used to collect dripping water and drain it through drain 550 .

On the other hand, the upper space K is divided into; a middle space of a pure water container fixed on the middle plate 280 by screws for storing a predetermined amount of water; a side space for placing the bracket 340 fixed by the filter Fixed on the second support frame 270 and the middle plate 280 so as to be used to filter the foreign matter in the tap water supplied to purify the water with a replaceable filter device 350, another side space is used to place a hot water container 360, this hot water container 360 It is screwed to store a predetermined amount of purified water supplied by the purified water container 330 and to exchange heat with a heater (not shown) embedded inside. The purified water container 330 includes a purified water container main body 331 with an open top and a cover 332 for covering the opened top thereof.

The main body 331 has a penetrating hole 333 for draining purified water filtered by the filtering device 350 contained therein; Purified water in the discharge main body 331; a second water outlet 335 installed at the lower part of its rear part is used for purifying water from the purified water container main body 331 to the hot water container 360 by the fourth connection hose 373 Convey; a third water outlet 336 installed in the lower part of its middle part is used to introduce purified water into the cold water container from the purified water container main body 331.

The cover 332 is equipped with a water level detection device 380 installed vertically on one side, so as to detect the gradually changing purified water level in the main body 331; The purified water is further disinfected and eliminates serious bacterial contaminants in the purified water held in the purified water container 330 for a long time.

The filter layer fixing bracket 340 is folded into a "" shape. As seen from the front of this product, its upper part is screwed to the front, upper and rear of the second support frame 270, and its lower part is screwed to the One end of the middle plate 280 .

Filtration device 350 comprises a replaceable sediment filter 351 that is fixed together with filter layer fixing bracket 340, is used for removing foreign matter such as rust etc. floating on tap water, and a replaceable sediment filter 351 that is fixed together with filter layer fixing bracket 340 Pretreatment filter 352, it is used to remove foreign matter such as chlorine gas in the tap water that flows through sediment filter 351, and a film filter 353 that is fixed together with filter layer fixing bracket 340 is used for eliminating Various heavy metals and carcinogens in the tap water compressed by the compression pump 400 between the pre-treatment filter 352 and one surface of the lower plate 210, a replaceable post-treatment filter fixed together with the filter layer fixing bracket 340 A device 354 is used to remove odorous and harmful gases contained in the tap water supplied by the membrane filter 353, and a disinfection filter 355 installed at one end of the lower plate 210 is used to carry out the tap water flowing through the post-treatment filter 354 It is sterilized and supplied to the purified water container 330 .

Here, the sediment filter 351, the pretreatment filter 352, the membrane filter 353, the posttreatment filter 354, the sterilization filter 355 and the compression pump 400 are integrally connected by a fifth hose 374 to guide running water.

As shown in Figure 9, a water supply pipe 401 is connected to one end of the lower portion of the sediment filter 351, and is used to supply the sediment filter 351 with tap water from a tap water source; a water level detector 402 installed at a predetermined position is used to rotate And measure the tap water hydraulic pressure supplied by the tap water source to the water supply pipe 401; a concentrating water pipe 410 connected to one end of the lower part of the membrane filter 353 is used to discharge the accumulated water generated when tap water flows into it.

On the upper part of the lower space L is a cold water container 450 fixed by screws and suspended at a predetermined height in the center of the middle plate 280, used to store a certain amount of purified water supplied by the purified water container 330, and exchange heat with the heat exchange device 490. Exchange to cool down the purified water in it. In addition, a sterilizing filter 355, a compression pump 400, a drainage device 460, a fan 472, and a trance 480 are installed at predetermined positions on the lower plate 210, respectively. The fan 472 is mounted on the shaft of the fan motor 471 to discharge the heat generated by the heat exchanging device 490 through electronic cooling.

A switch mode power supply is installed on the outer surface of the cold water container 450, a collection water volume control valve 510 is installed on its left side edge, and a thermostat 615 is attached to its upper top to detect the cold water temperature in the cold water container 450.

On the other hand, a series of fixing brackets are made into a folded shape to vertically fix the drain valves 530, 531 and 532 controlled by electronic signals, so as to discharge the water in the purified water container 330, the cold water container 450, and the hot water container 360. water. A drain hose 550 is connected to the other end of the three drain valves 530, 531 and 532 to discharge water from the three drain valves 530, 531 and 532 connected to the purified water container 330, the cold water container 450 and the hot water container 360 respectively. of water.

The heat exchanger 490 comprises a heat conduction element and cooling elements 492 and 494 positioned on the outer surface of the bottom of the cold water container 450 to absorb the heat of the pure water stored in the cold water container 450, and because the current implies different n-type And the heat transfer circuit composed of p-type semiconductor heat-conducting elements, so as to dissipate the heat absorbed by the electronic cooling method of heat absorption and dissipation in its contact part as much as possible, so that the purified water can be cooled, and a cold groove 491 is used Installed in the inner bottom of the cold water container 450, and connected with the heat conduction and refrigeration elements 492 and 494, in order to expand the area absorbing the heat of the purified water stored in the cold water container, thereby more effectively performing heat exchange.

The thermostat 497 is mounted on one end of the heat sink 495, and is used to prevent the heat conduction and cooling elements 492 and 494 from getting too much heat by detecting the temperature change of the heat sink 495, and is used for when the heat sink 495 exceeds a predetermined temperature (for example, 60 °C), the power to the heat transfer and cooling elements 492 and 494 is automatically turned off.

The block diagram of controlling drainage operation in this water purifier is described with reference to Fig. 9 and Fig. 10, as shown in Fig. 9 and Fig. 10, power supply 600 is SMPS, in order to be supplied by the commercial power supply terminal (not shown in the figure) The AC voltage is converted into the predetermined DC voltage required for the operation of the water purifier (the driving voltage of the microcomputer is DC (DC) 5V, and the driving voltage of the relay is DC (DC) 24V). The water level detection device 605 is a floating sensor 380, It is used to detect the amount of purified water stored in the purified water container, in other words, to detect the level of purified water stored in the purified water container 330 .

The key input device 610 comprises a purified water switch SW1; a cold water switch SW2 and a hot water switch SW3, which are used to select desired one among purified water, cold water, and hot water; An off switch SW4 is used to start the cooling operation of the cold water container 450, a hot water on/off switch SW5 is used to start the heating operation of the hot water container, and two plate tubes D1-D5.

The cold water temperature detecting device 615 is a thermostat for detecting the temperature of cold water stored in the cold water container 450 , and a hot water temperature detecting device 620 is a thermostat for detecting the temperature of hot water stored in the hot water container 360 .

The control device 625 is a microcomputer, which is used to control the entire water purification program according to the water level detection signal sent by the water level detection device 605 when the control device 625 receives the DC voltage output by the power supply 600 to initialize the water purifier. The control device 625 performs purification, cooling, and heating operations according to key signals input from the key input device 610, and controls opening or closing operations of the drain valves 530, 531, and 532 to obtain desired purified water, cold water, or hot water.

The pump driving device 635 controls the operation of the compression pump 400 according to the control signal sent by the control device 625, and the water supply valve driving device 640 operates according to the control signal output by the water supply source when the water level of the purified water container 330 is detected by the water level detection device 605. Water supply valve 641.

The drain valve driving device 645 controls the operation of the drain valve of purified water, cold water or hot water according to the valve driving signal sent by the control device 625, so as to discharge the purified water, cold water or cold water from the purified water container 330, the cold water container 450 and the hot water container 360 respectively. , hot water.

The drainage driving device 645 includes: a relay _RY1 , used to be driven to open or close the purified water drain valve (530: in hereinafter referred to as purified water valve); relay _RY2 , in order to be driven to open or close the cold water drain valve (531: referred to as cold water valve); relay _RY3 , used to be driven to open or close the hot water drain valve (532: hereinafter referred to as the hot water valve) ); protection diodes D6, D7 and D8 are used to bypass the reverse electromotive force generated by relays RY1-RY3.

The cooling drive unit 650 controls the operation of the heat transfer and cooling elements 492 and 494 according to the control signal output from the control unit 625 due to the temperature difference between the predetermined cold water temperature Tcs and the cold water temperature Tc detected by the cold water temperature detection unit 615 The purified water in the cold water container 450 is thereby cooled.

The fan motor driver 655 controls the operation of the fan 472 by controlling the number of revolutions of the fan motor 471, so as to cool the heat dissipated by the thermal groove 495 in the electronic cooling mode of the heat conduction and cooling elements 492 and 494; the thermal driver 660, According to the temperature difference between the predetermined hot water temperature Ths and the hot water temperature Th detected by the hot water temperature detection device 620, the operation of the heater is controlled by the control signal output by the control device 625, thereby purifying the hot water tank 360. The water is heated.

In addition, the display unit 665 in the figure shows a kind of water (purified water, cold water or hot water) selected by the key input unit 610, or an operating state of the water purifier.

Next, the operational effects of the present invention will be described in detail. When the power supply indirectly supplies power to the water purifier, the power supply 600 supplies power to each drive circuit and control device by converting the commercial AC power supplied by the AC power supply terminal (not shown) into direct current according to the operation requirements of the water purifier . Therefore, the control device 625 initializes the water purifier by inputting the DC voltage output from the power supply 600 .

At this time, the water level detection device 605 detects and sends the water level signal of the purified water container 330 to the control device 625, and the control device 625 distinguishes whether the water level in the purified water container 330 measured by the water level detection device 605 is lower than the lower limit of the predetermined water level (minimum Water level: if the full water level is 100%, the lowest water level is 10%).

If the water level in the purified water container 330 is lower than the preset water level lower limit, the control device 625 sends a control signal to the water supply driving device 640 to perform the water purification process, thereby filling up the purified water container with purified water.

Correspondingly, the water supply valve driving device 640 provides an external voltage at the water supply valve 641 according to the control command of the control device 625 to open the water supply valve 641 .

When the water supply valve 641 was opened, tap water was just supplied by the water source, and the control device 625 sent a control signal to the pump driver 635, so that the compression pump 400 was driven to increase the pressure of the tap water poured into the membrane filter 353 to a predetermined value. pressure.

At this time, the pump driving device 635 receives a control signal from the control device 625 so that the compression pump is driven by the voltage.

When the compression pump 400 is driven, the water supply valve 641 is opened, so that the tap water flows through the sediment filter 351 in sequence to remove foreign objects such as rust floating on the surface of the tap water, flows through the pre-filter 352 to remove foreign objects such as chlorine, and Pass through the membrane filter 353 of multi-layer film to remove various heavy metals and carcinogens in the water compressed by the compression pump 400, flow through the post filter 354 to remove odorous and harmful gases, and flow through the disinfection filter 355 to eliminate harmful gases. Bacteria then provide purified water to the hot water container 360 and the cold water container 450 through the water injection hole 333 and the second and third water outlet pipes 335 and 336 respectively, and store them therein at last.

At this time, the water level detection device 605 detects and sends the water level signal in the purified water container 330 to the control device 625, and the control device 625 judges whether the water level in the purified water container 330 measured by the water level detection device 605 is lower than the predetermined water level lower limit.

If the water level in the purified water container 330 is higher than the lower limit of the predetermined water level, the control device 625 sends a control signal to the refrigeration driving device 650 to drive the heat transfer and refrigeration elements 492 and 494 to cool the purified water stored in the cold water container 450. water, and, at the same time, a control signal is sent to the fan motor driver 655 to drive the fan motor 471.

Therefore, the cooling drive unit 650 drives the heat transfer and cooling elements 492 and 494 under the control of the control unit 625 , and the fan motor drive unit 655 drives the fan motor 471 under the control of the control unit 625 .

When power is applied to the heat transfer and cooling elements 492 and 494, heat absorption and dissipation occurs at the contact portions of the heat transfer and cooling elements 492 and 494. The cold groove 491 contacting one end of the heat transfer and cooling elements 492 and 494 absorbs heat from the purified water in the purified water container 450, while the heat groove connected to the other end of the heat transfer and cooling elements 492 and 494 dissipates and absorbs heat The same heat, so that the water in the cold water container 450 is cooled. At this time, the operation of the fan motor 471 makes the fan rotate to dissipate heat, thereby improving the cooling effect.

At this time, the cold water temperature detection device 615 detects the cold water temperature Tc in the cold water container 450 reduced by the electric refrigeration mode of the heat transfer and refrigeration elements 492 and 494, because the operation of the heat transfer and refrigeration elements 492 and 494 is at The cold water temperature Tc measured by the cold water temperature detection device 615 is compared with the preset cold water temperature Tcs and then controlled to be turned on or off, so that the control device 625 can keep the cold water temperature Tc in the cold water container 450 at the preset cold water temperature value Tcs.

On the other hand, the control unit 625 sends a control signal to the heat driving unit 660 to drive the heater 361 to heat the purified water stored in the hot water tank 360 .

When the heater 361 is driven, purified water stored in the hot water tank 360 is heated due to heat energy emitted by the heater 361 . At this time, the hot water detection device 620 detects the hot water temperature Th in the hot water container 360 which is increased by the emitted heat of the heater 361. The temperature Th is controlled to be turned on or off after being compared with the preset hot water temperature Ths, so the control device 625 can keep the hot water temperature Th at the preset hot water temperature Ths.

On the other hand, the water purification process continues to meet the water level requirements of the purified water container 330, while cooling and heating operations are also carried out in the cold water container 450 and the hot water container 360, respectively.

As mentioned above, the water level detection device 605 detects the changing water level in the purified water container 330 which is continuously produced by the cold water or hot water along with the operation of the water purification process, and sends the collected data to the control device 625, and the control device 625 judges Whether the water level in the purified water container 330 measured by the water level detection device 605 is the maximum water level value.

If the water level in the purified water container exceeds the maximum water level value, the control device 625 sends a control signal to the water supply valve driving device 640 to turn off the water supply valve 641, thereby stopping the supply of purified water.

Therefore, the water supply valve driving device 640 turns off the voltage applied to the water supply valve 641 according to the control of the control device 625 .

When the water supply valve 641 is turned off, the control device 625 sends a control signal to the pump driving device 635 to stop the compression pump 400, and the operation of the compression pump 400 is stopped because the power supply to the compression pump 400 is cut off.

When the water supply valve 641 is turned off and the operation of the compression pump 400 is stopped, the supply of tap water from the water source is stopped, thereby stopping the water purification operation process.

When the purified water, cold water, or hot water stored in the purified water container 330, the cold water container 450, or the hot water container 360 are separately stored, the switches SW1, SW2, or SW3 installed on the control panel 290 at the top of the front part of the main body 200 When selected, the control device 625 receives a high or low drainage selection signal through the input terminals I ₁ -I ₃ to determine which water is required.

When one of the purified water switch SW1, the cold water switch SW2 and the hot water switch SW3 is selected and the drain button 310 is pressed, a drain switch (not shown) is turned on and it is determined whether a drain confirmation signal is sent.

The control signals for opening the purified water, cold water or hot water valves 530, 531 and 532 are sent to the drain valve driving device 645 according to the drainage selection signals input from the input terminals _I1 - _I3 , thereby providing the required purified water and cold water. or hot water.

Correspondingly, the drain valve driving device 645 receives the purified water, cold water or hot water valve driving signals output by the output terminals _P1 - _P3 of the control device 625 and sent through the buffer device 646 to drive the selected relays RY1-RY3, The desired purified water, cold water or hot water valves 530, 531 and 532 are thus opened.

If purified water is selected, a high level driving signal of the purified water valve is output from the output terminal _P1 of the control device 625 and converted into a low level signal. When the relay driving voltage V _DD output from the power supply 600 passes through the relay RY1 and the buffer device 646 to the ground power supply, the relay RY1 is driven to close the relay contact RY1c.

When the relay contact RY1c is closed, the direct current V _DD output by the power supply 600 is supplied to the purified water valve 530 through the relay contact RY1c, and then the purified water valve 530 is opened to discharge the purified water in the purified water container 330 through the drain hole. Purify water.

On the other hand, if cold water is selected, a high-level cold water valve driving signal is output from the output terminal _P2 of the control device 625 and converted into a low-level signal by the buffer device 646 . When the relay driving voltage V _DD output from the power supply 600 supplies power through the relay RY2 and the buffer device 646 to the ground, the relay RY2 is driven to close the relay contact RY2c.

When the relay contact RY2c is closed, the direct current V _DD output by the power supply 600 is supplied to the cold water valve 531 through the relay contact RY2c, and then the cold water valve 531 is opened, and the cold water in the cold water container 450 is discharged through the drain hose 550 .

In addition, if hot water is selected, a high-level hot water valve driving signal is output from the output terminal _P3 of the control device 625 and converted into a low-level signal by the buffer device 646 . When the relay driving voltage V _DD output from the power supply 600 supplies power through the relay RY3 and the buffer device 646 to the ground, the relay RY3 is driven to close the relay contact RY3c.

When the relay contact RY3c is closed, the direct current V _DD output by the power supply 600 is supplied to the hot water valve 532 through the relay contact RY3c, and then the hot water valve 532 is opened, and the hot water container 360 is discharged through the drain hose 550 of hot water.

However, if the cold water or hot water is not used and the cold water switch SW4 or the hot water switch SW5 is kept closed, the control device 625 receives the cold water or hot water off signal through the input terminal _I4 or _I5 to determine whether the cold water or the hot water is closed. is turned off.

If the cold water is turned off for a long time in order to use only purified water and hot water, the water in the cold water container 450 will deteriorate because it is not drained. Even if the purified water switch SW1 is selected, the cold water valve drive signal is sent through the output terminal _P2 of the control device 625 to open the cold water valve 531, so that the purified water in the purified water container 330 will be stored for a long time before it is discharged through the cold water valve 531. The cold water in the cold water container 450 is completely discharged through the drain hose 550, thereby preventing the cold water from deteriorating in the cold water container 450.

If the hot water is turned off for a long time in order to use only purified water and cold water, the water in the hot water container 360 will deteriorate because it is not drained. Even if the purified water switch SW1 is selected, the hot water valve driving signal is sent through the output terminal _P3 of the control device 625 to open the hot water valve 532, so that the purified water in the purified water container 330 is discharged through the hot water valve 532 before it is discharged. The hot water in the hot water container 360 stored for a long time is completely discharged through the drain hose 550, thereby preventing the hot water from deteriorating in the hot water container 360.

If the cold water and hot water are turned off for a long time in order to only use purified water, the water in the hot water container 360 and the cold water container 450 will deteriorate because they are not drained. Even if the purified water switch is selected, the hot water and cold water valve driving signals are sequentially sent out through the output ports _P2 and _P3 of the control device 625 to open the hot water and cold water valves 532 and 531, so that the purified water in the purified water container 330 passes through Before the hot water and cold water valves 532 and 531 are discharged, the hot water and cold water in the hot water and cold water containers 360 and 450 that have been stored for a long time are completely discharged through the drain hose 550. In this way, hot water and cold water can be prevented from being discharged. Deterioration occurs in the hot and cold water containers 360 and 450 .

On the other hand, when the hot water and cold water are turned off, the water in the purified water container 330 is discharged through the hot water container 360 . At this time, if the hot water temperature Th exceeds the preset hot water temperature, the purified water in the purified water tank 330 is discharged until the hot water temperature in the hot water tank 360 decreases to the preset temperature. Therefore, the reliability of this product is improved.

An advantage of the present invention is that the drain of the water purifier prevents the water in the hot water container 360 or the cold water container 450 from going bad if the water needs to be purified without using the hot and/or cold water functions.

Claims (1)

1. water purifier, comprise a water purification water receptacle of depositing through a plurality of filter cleanings, a cold water vessels and a hot water vessel of depositing the heated hot water of purifying waste water in the container of purifying waste water of depositing the cooled cold water of purifying waste water in the container of purifying waste water, wherein the water-freeing arrangement of this water purifier comprises:

Key input apparatus is used for selecting hot water with cold water and be used for importing a key signals in order to discharge relevant water;

A water discharge valve is used for discharging hot water or cold water selectively according to key signals; And,

Control device, whether the system selector switch that is used for discerning hot water or cold water is switched off, and is used for controlling the opening or closing to discharge hot water or cold water by hot water or cold water vessels of water discharge valve.

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