KR0175884B1 - Control device of water purifier - Google Patents

Abstract

The present invention relates to a water purifier that removes harmful contaminants contained in raw water such as tap water and performs water purification, and more particularly, to a control device of a water purifier that controls the life of a filter depending on whether a pressurized pump for boosting the water pressure of raw water is installed. As a result, the pump mounting detecting means 70 for detecting whether the pressure pump 71 for boosting the water pressure of the raw water flowing into the membrane 29 to a predetermined pressure and the pump mounting detecting means 70 are detected. A control means 65 for determining the replacement time of the filter by receiving the input pump mounting detection signal and counting the filter use time; and the total filter use time according to the filter use time countered by the control means 65. Memory means 90 for storing a previous filter use time for calculating and output from the control means 65 according to the total filter use time stored in the memory means 90; That receives a control signal consisting of a display means 100 for displaying a replacement timing of the filter is characterized.

Description

Control device of water purifier

1 is a perspective view showing a conventional water purifier.

2 is an exploded perspective view showing a water purifier according to an embodiment of the present invention.

3 is a rear perspective view of the water purifier according to the embodiment of the present invention.

4 is a control block diagram of a control device of a water purifier according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

25: water supply pipe 27: pretreatment filter

29 Membrane 31 Aftertreatment Filter

33: water storage tank 50: DC power supply means

55: water level detection means 60: reset signal input means

65 control means 70 pump detection means

80: water supply valve driving means 81: water supply valve

90: memory means 100: display means

The present invention relates to a water purifier that removes harmful contaminants contained in raw water, such as tap water, and performs water purification. Particularly, a control device of a water purifier that controls the life of a filter according to whether a pressurized pump for boosting the water pressure of raw water to be supplied is installed. It is about.

In general, the water purifier removes harmful carcinogens contained in the raw water of tap water and supplies purified water, and according to the water purification method, it is largely classified into natural filtration, direct filtration, ion exchange resin, and reverse osmosis. You can share it.

Among them, the reverse osmosis water purifier pressurizes the raw water to pass water through the membrane (reverse osmosis filter), which is an artificial osmosis membrane, to purify the water, and removes heavy metals, bacteria, and carcinogens contained in the raw water, and removes pure water. It is used to purify water for the cutting-edge scientific industry, cleaning of high-precision electronic parts, or medical use because it can supply only clean water that has passed through dissolved oxygen, etc., and recently, it is also widely used for water purifier to purify drinking water for home use. .

As shown in FIG. 1, the conventional reverse osmosis type water purifier has raw water, such as tap water supplied into the water supply pipe 3 through the adapter 2 connected to the faucet 1, on the rear side of the main body 4. As shown in FIG. Various harmful organic compounds, such as chlorine, are removed while passing through the pretreatment filter 5 installed therein, and the raw water passing through the pretreatment filter 5 is controlled by a water supply valve (not shown), and the pressure pump is driven. As a result, the pressure is increased to a predetermined pressure and flows into the membrane 6.

At this time, the raw water introduced into the membrane 6 passes through a membrane membrane (not shown) in the membrane 6 to remove various heavy metals, carcinogens, bacteria, etc. contained in the raw water, and passes through the membrane 6. One raw water passes through the post-treatment filter 7 to remove odors such as toxic gases.

The purified water having a good taste after removing odors such as toxic gas while passing through the post-treatment filter 7 is supplied into the water storage tank 8 through a water supply hole 8a, and the amount of purified water supplied into the water storage tank 8 is filled with water. Detect whether it is the maximum water supply to cut off the purified water supply to the reservoir tank or the low water level (the minimum water supply to start supplying purified water to the reservoir tank).

When the amount of purified water supplied in the water storage tank 8 is full water level, the supply of purified water into the water storage tank 8 is blocked, and when the amount of purified water supplied in the water storage tank 8 is low water level, the water storage tank 8 By supplying purified water, it is controlled so that a certain amount of purified water is always stored in the water storage tank 8.

In addition, the purified water in the water storage tank 8 is discharged through the water intake port 9a according to the operation of the water intake lever 9 to enable water intake.

By the way, in such a conventional water purifier, the life of the filter (pretreatment filter, membrane, post-treatment filter) according to the driving of the pressure pump is driven by driving the pressure pump irrespective of the water pressure of raw water supplied from the faucet into the water supply pipe. Considering that it is about 1.5 times shorter than the service life when the pressure pump is not driven, there is a problem that not only is not economical due to waste of the filter, but also the user's dissatisfaction due to frequent replacement of the filter.

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a control device for a water purifier capable of determining the replacement time of the filter.

In order to achieve the above object, the water purifier according to the present invention is a water purifier in which a control device performs water purification by passing raw water supplied through a pretreatment filter, a membrane, and a post treatment filter, and boosts the water pressure of the raw water flowing into the membrane at a constant pressure. A pump mounting detecting means for detecting whether a pressurized pump is mounted, a control means for receiving a pump mounting detecting signal sensed by the pump mounting detecting means and determining a replacement time of the filter and counting the filter use time; Memory means for storing the previous filter use time to calculate the total filter use time according to the filter use time counted by the control means, and control outputted from the control means according to the total filter use time stored in the memory means; Display means for receiving the signal and indicating the filter replacement time The.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As shown in Figs. 2 to 3, reference numeral 20 denotes a main body of the water purifier, and an accommodating part 20a for accommodating a water intake container such as a cup is formed on the front surface of the main body 20.

In addition, one end of the water supply pipe 25 is connected to the connector 23 coupled to the faucet 21 on the rear side of the main body 20, and the other end of the water supply pipe 25 is connected to the connector 23 from the faucet 21. As raw water is supplied through the pretreatment), a pretreatment filter 27 for removing various harmful organic compounds such as chlorine is connected.

In addition, a membrane having a plurality of membrane membranes (not shown) formed on one side of the pretreatment filter 27 to remove bacteria such as various heavy metals, carcinogens, and bacteria contained in the raw water passing through the pretreatment filter 27 ( 29) is provided, and one side of the membrane 29 is provided with a post-treatment filter 31 for removing odorous components such as toxic gas contained in the raw water passing through the membrane 29.

On one side of the upper end of the pretreatment filter 27, the membrane 29 and the post-treatment filter 31, a reset switch 27a for inputting an exchange time of the pretreatment filter 27, the membrane 29 and the post-treatment filter 31. , 29a and 31a are mounted.

In addition, a storage tank 33 having a water supply hole 33a formed at one side thereof is detachably seated on the upper side of the main body 20 so that the purified water passing through the post-treatment filter 31 is stored therein. The inner back of the) is equipped with a high water level sensor 41 and the low water level sensor 43 for detecting the amount of purified water stored in the reservoir 33.

In addition, in the drawing, a water intake lever 34 is coupled to the front of the water storage tank 33 so that the purified water in the water storage tank 33 is discharged through a water intake port, which is not shown. An upper cover 39a covering the tank 33 and an upper cover 39b covering the reset switches 27a, 29a, and 31a are installed, and a rear cover 47 is coupled to the rear side of the main body 20.

And, as shown in FIG. 3 at the lower end of the post-treatment filter 31, the amount of purified water in the water storage tank 33, which is detachably seated on the upper side of the main body 20, that is, of the water storage tank 33 The water supply valve 81 is opened and closed according to the water level, and the raw water introduced into the membrane 29 through the pretreatment filter 27 is connected to the rear end of the water supply valve 81 at a constant pressure. 29, a pressure pump 71 is mounted to boost the pressure of the raw water flowing into the membrane 29 to a predetermined pressure so as to allow water purification by reverse osmosis.

On the other hand, the pressure pump 71 is detachably installed in accordance with the water pressure of the raw water supplied from the faucet 21 through the connector 23 into the water supply pipe 25.

On the other hand, reference numeral 45 is a ground terminal.

The control block diagram (FIG. 4) of the water purifier for determining the life of the filter in accordance with whether or not the pressurized pump is mounted in the above-described water purifier will be described.

As shown in FIG. 4, the DC power supply unit 50 receives a power supply voltage of a commercial AC power supplied from an AC power input terminal (not shown), converts it into a DC voltage required for the operation of the water purifier, and outputs the water level detection. The means 55 detects the water level sensor 41 for detecting the water level supplied and stored in the water storage tank 33, that is, the water level of the water storage tank 33, and the water level of the water storage tank 33. The low water level sensor 43 is comprised.

In addition, the reset signal input means 60 may reset the use time of the pretreatment filter 27, the membrane 29, and the post-treatment filter 31. It is composed of reset switches 27a, 29a, 31a attached to one end of the post-processing filter 31 to input a reset signal.

The control unit 65 receives the DC voltage output from the DC power supply unit 50 to initialize the water purifier, and receives the water level detection signal output from the water level sensing unit 55 to receive the overall constant of the water purifier. As a microcomputer for controlling the operation, the control means 65 determines the life of the pretreatment filter 27, the membrane 29 and the aftertreatment filter 31 depending on whether or not the pressure pump 71 is mounted. The data corresponding to the filter replacement time are stored in advance on the ROM table, and a timer is built in to count the use time of the pretreatment filter 27, the membrane 29 and the posttreatment filter 31.

In addition, the pump mounting drive detecting means 70 detects whether or not the pressurized pump 71 which raises the pressure of the raw water flowing into the membrane 29 through the pretreatment filter to a predetermined pressure is mounted on the water purifier. By outputting to the control means 65, the pump mounting detecting means 70 is a power line attached to the pressure pump 71 to supply power applied from the outside to the pressure pump 71 is shown. It is a pump mounting presence check terminal for determining whether the pressurized pump 71 is mounted by detecting whether it is connected to the pump power terminal of the PCB.

In addition, the water supply valve driving means 80 receives the control signal output from the control means 65 according to the water level of the water storage tank 33 sensed by the water level sensing means 65 and the water storage tank 33. The water supply valve 81 is driven and controlled to supply the purified water into the inside, and the memory means 90 controls the control means 65 according to the opening / closing (on / off) time of the water supply valve 81 during the water purification operation of the water purifier. This is an EPROM in which the contents of the memory are electrically erased or recorded so as to store the use time of the pretreatment filter 27, the membrane 29, and the posttreatment filter 31 counted by a counter embedded therein.

In addition, in the drawing, the display means 100 receives a control signal output from the control means 65 and exchanges the operation state of the water purifier with the pretreatment filter 27, the membrane 29, and the post-treatment filter 31. It displays the timing so that users can easily check by generating alarm sound such as LED and buzzer.

Hereinafter, the effect of the control device of the water purifier configured as described above will be described.

First, when power is applied to the water purifier, the DC power supply unit 50 converts the power supply voltage of the commercial AC power supplied from the AC power input (not shown) into DC voltages required for driving the water purifier, thereby driving each circuit and control means ( To 65).

Therefore, the control unit 65 receives the DC voltage output from the DC power supply unit 50 to initialize the water purifier, and the pump driving detecting unit 70 pressurizes the water pressure of the raw water supplied to a constant pressure. It detects whether or not 71 is mounted and outputs it to the control means 65.

Accordingly, the control means 65 receives the pump mounting driving detection signal sensed by the pump mounting detecting means 70 to determine whether the pressurized pump 71 is mounted, and is pre-stored in the ROM table. (27), the life (exchange time) of the membrane 29 and the post-treatment filter 31 is determined (determined).

At this time, the life of the pretreatment filter 27, the membrane 29 and the post-treatment filter 31 determined by the control means 65, when the pressure pump 71 is not mounted, the pressure pump 71 is Its life is about 1.5 times longer than when installed.

That is, when the pressure pump 71 is mounted, the lifetime of the pretreatment filter 27 determined by the control means 65 is 30,000 minutes, the membrane 29 is 100,000 minutes, the aftertreatment filter 31 is 60,000 minutes. When the pressure pump 71 is not mounted, the life of the pretreatment filter 27 determined by the control means 65 is 45,000 minutes, the membrane 29 is 150,000 minutes, and the aftertreatment filter 31 is 7 15,000 minutes.

As described above, when the control means 65 determines the life of each filter in accordance with whether the pressure pump 71 is mounted, the water purifying operation of the water purifier starts.

First, the low water level sensor 41 and the low water level sensor 43 mounted in the water storage tank 33 for storing purified water detect the water level of the water storage tank 33, that is, the water level of the water storage tank 33. The detected water level data is output to the control means 65.

If the water level of the water storage tank 33 detected by the high water level sensor 41 and the low water level sensor 43 is 'medium' or more, the control unit 65 may determine the water level in the water storage tank to be “medium” or less. Wait for the water purifying operation until it drops to.

When a certain time has elapsed, when the water level in the reservoir tank 33 falls below the medium water level (low water level), the low water level sensor 43 detects it and outputs the detected water level data to the control means 65.

Therefore, the control means 65 outputs a control signal to the water supply valve driving means 80 so as to perform a water purification operation for supplying purified water into the water storage tank 65.

Accordingly, the water supply valve driving means 80 supplies the power supply voltage applied to the water supply valve 81 under the control of the control means 65 to open the water supply valve 81.

At this time, the timer built in the control means 65 starts counting the filter use time according to the opening of the water supply valve 81.

When the water supply valve 81 is opened, raw water such as tap water starts to be supplied from the faucet 21 to the water supply pipe 25 through the connector 23. The raw water supplied into the water supply pipe 25 passes through the pretreatment filter 27 to remove various harmful organic compounds such as chlorine, and the raw water passed through the pretreatment filter 27 passes through the water supply valve 81. Through the membrane 29.

At this time, the raw water flowing into the membrane 29 passes through the membrane 29 while maintaining a constant pressure. When the water pressure of the raw water supplied into the water supply pipe 25 is high water pressure, the pressure pump 71 is not installed. Since it is not in the state, the raw water passes through the membrane 29 at its own pressure.

On the other hand, when the water pressure of the raw water supplied into the water supply pipe 25 is not a high water pressure, since the pressure pump 71 is mounted, the raw water is boosted to a constant pressure according to the driving of the pressure pump 71 and the membrane ( Pass 29).

As such, the raw water introduced into the membrane 29 with or without passing through the pressure pump 71 according to the water pressure of the raw water supplied into the water supply pipe 25 passes through a plurality of membrane membranes formed in the membrane 29. Various heavy metals, carcinogens, and bacteria contained in raw water are removed.

After passing through the membrane 29, the raw water passes through the post-treatment filter 31 to remove odor such as toxic gas, and then is supplied into the water storage tank 33 through the water supply hole 33a.

The water level supplied to the water storage tank 33 through the water supply hole 33a, that is, the water level of the water storage tank 33 is detected by the high water level sensor 41 and outputs the detected water level data to the control means 65. .

If the water level of the water storage tank 33 detected by the high water level sensor 41 is the high water level, the control unit 65 outputs a control signal to the water supply valve driving unit 80 to stop the water purification operation. .

Therefore, the water supply valve driving means 80 blocks the power supply voltage applied to the water supply valve 81 under the control of the control means 65 to close the water supply valve 81.

When the water supply valve 81 is closed, the supply of raw water supplied from the faucet 21 into the water supply pipe 25 is cut off so that the purified water is no longer supplied into the water storage tank 33, and the control means 65 In the timer built in, the counting operation of the filter usage time due to the closing of the water supply valve 81 is stopped.

Then, the control means 65 reads the previous filter use time stored in the memory means 90, and replaces the current filter use time counted by the timer with the read previous filter use time. The total filter usage time is calculated by adding.

Then, the control means 65 stores the calculated total filter use time again in the memory means 90, and then the total filter use time stored in the memory means 90 is determined whether or not the pressure pump 71 is mounted. Therefore, it is judged whether the predetermined filter life (exchange time) has elapsed by the control means 65.

As a result of the determination, when the total filter use time has passed the filter life (exchange time), the control means 65 outputs a control signal to the display means 100 to replace the filter.

Accordingly, the display means 100 flashes the LED of the filter according to the control of the control means 65 so that the corresponding filter at the end of its life can be quickly replaced.

After replacing the filter and turning on the reset switches 27a, 29a, 31a attached to one side of the filter, a reset signal is transmitted from the reset signal input means 60 to the control means 65. The control means 65 clears the use time of the filter and counts again from the beginning.

As described above, according to the control device of the water purifier according to the present invention, since the filter life can be properly determined by controlling the life of the filter according to whether or not the pressure pump is installed, it is possible to prevent the waste of the filter due to the replacement. And it is very excellent effect that can improve the customer's satisfaction with the product by eliminating the inconvenience in use due to frequent replacement of the filter.

Claims (2)

A water purifier for purifying raw water supplied through a pretreatment filter, a membrane and a post treatment filter, the water purifier comprising: a pump mounting detecting means for detecting whether a pressurized pump for boosting the water pressure of the raw water flowing into the membrane to a predetermined pressure is mounted; A memory means for storing the total usage time of the filter and a detection signal from the pump mounting detecting means to determine the life of the filter depending on whether or not the pressure pump is mounted, and the use time of the filter according to the opening of the water supply valve is stored in the memory. Control means for accumulating in the stored total usage time of the filter and outputting a control signal to inform the user that it is time to replace the filter when the total usage time of the filter exceeds the life of the filter; Consisting of indicator means for receiving a signal and indicating that it is time to replace the filter Control apparatus for a water purifier according to. The water purifier control device according to claim 1, wherein the control means includes a timer for counting the use time of the pretreatment filter, the membrane and the post treatment filter according to the opening of the feed valve.