KR19980030379A - Water level control method of water purifier with two water tanks - Google Patents

Abstract

The present invention relates to a water level control method of a water purifier having two water tanks, and more particularly, even if a failure occurs in the water level sensor installed in each storage tank to measure the water level, the water tank overflows. Water level control method of a water purifier with two water tanks to prevent water and to perform a normal water purifying operation using a water level sensor which is not defective.

Water level control method of the water purifier having two water tanks of the present invention, the main control unit 15 determines whether the water level sensor (101, 102, 103, 104) (121, 122, 123) installed in the water purification tank (10) and cold water tank (12) First step, if a failure occurs in at least one of the water level sensors (101, 102, 103, 104) installed in the water purification tank 10, the second step of performing the water purification operation using the water level sensor installed in the cold water tank 12, cold water tank (12) (3) performing a water purifying operation using the water level sensor installed in the water purification tank 10 when a failure occurs in at least one of the water level sensors 121, 122, and 23 installed in the water level sensor, and the water level installed in the water purification tank 10 If a failure occurs in at least one of the sensors and at least one of the water level sensors installed in the cold water tank 12, the fourth step of stopping the supply of purified water and displaying it to the outside.

Description

Water level control method of water purifier with two water tanks

The present invention relates to a water level control method for a water purifier having two water tanks, and more particularly, even if a water level sensor is installed in each water tank to measure a water level, the water level of the water tank overflows. Water level control method of a water purifier with two water tanks to prevent water and to perform a normal water purifying operation using a water level sensor which is not defective.

The use of water purifiers is gradually spreading due to the increase of distrust in tap water due to environmental pollution. A water purifier is a device for filtering natural water such as tap water or weak water (hereinafter referred to as raw water). The water is passed through various kinds of filtering means to remove foreign substances or harmful substances contained in raw water and include only substances that are beneficial to the human body. To provide drinking water. Various kinds of water purifiers as described above are used, and the reverse osmosis type water purifier may be referred to as a representative one. The reverse osmosis water purifier purifies raw water by using a so-called reverse osmosis filter (hereinafter referred to as a membrane filter). The membrane filter is formed of a plurality of pores having a very small diameter to remove foreign substances or harmful substances.

1 and 2 show an example of the configuration of a conventional water purifier.

As shown, the water purifier is a raw water valve 1 for controlling the supply of raw water such as tap water or natural water, and a high-purity filter for filtering the residue of relatively large particles in the raw water passing through the raw water valve 1. (2), a precipitation filter (3) for filtering the residue of relatively small particles not filtered while passing through the high turbidity filter (2), and a pressurizing pump (3) for moving the supplied raw water to a predetermined pressure. ), An all carbon filter 4 for removing chlorine components and odors in raw water, a membrane filter 6 for removing ionic heavy metals remaining in raw water passing through the all carbon filter 4, A wastewater regulator 7 for adjusting the drinking water to wastewater separation ratio of the raw water passing through the membrane filter 6 and discharging the wastewater, and for removing chlorine component or odor contained in the drinking water passing through the membrane filter 6. after Consists of the filter 8 and the sterile filter (9) for the removal of bacteria of the raw water passes through the carbon filter 8 after the above, an integer that has passed through the sterilizing filter (9) is introduced into the tank. In addition, a stage switch 11 for detecting this in the case of becoming a stage is provided adjacent to the raw water valve 1.

The purified water passing through the sterilization filter 9 is finally supplied to the purified water tank 10 and the cold water tank 12 for storage. The water purification tank 10 and the cold water tank 12 are respectively provided with water level sensors for measuring the water level. Referring to FIG. 2, a common sensor 100 and 120 performing a common terminal role on a bottom surface thereof, a lower sensor 101 and 121 above the common sensor 100 and 120, and a low sensor 102 and 122 above the lower sensor 101 and 121. High sensors (103, 123) are installed on the 102, 122, respectively, and the cold water tank (10) is further provided with an overflow sensor (104) for detecting the excess state of the purified water on the uppermost side. The sensors are devices that sense a change in resistance caused by water and thus generate different electrical signals.

The water level sensor installed as described above may cause self-defect or a defect due to various reasons, and thus becomes a factor of failure of the water purifier. For example, when a failure occurs in the overflow sensor 104, the water purification operation is not stopped but is continuously performed, and the water purification is discharged to the outside, resulting in waste water purification.

The present invention has been made to solve the above problems, an object of the present invention is that the water tank overflows even if a failure occurs in the level sensor to measure the water level installed in each storage tank. The present invention provides a water level control method for a water purifier having two water tanks which can prevent water purification and perform a normal water purifying operation by using a water level sensor that is not defective.

Water level control method of the water purifier with two water tanks of the present invention for achieving the above object, the first step of determining whether the water level sensors installed in the water purification tank and cold water tank, at least one of the water level sensor installed in the water purification tank Step 2 to perform the water purifying operation using the water level sensor installed in the cold water tank if a failure occurs, and water level operation using the water level sensor installed in the water purification tank when a failure occurs in at least one level sensor of the water level sensor installed in the cold water tank. The third step of performing the step and at least one of the water level sensor installed in the water purification tank and at least one of the water level sensor installed in the cold water tank occurs when the water supply stops and characterized in that the fourth step of displaying to the outside It is done.

Hereinafter, a water level control method of a water purifier having two water tanks of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic block diagram of a conventional reverse osmosis water purifier,

Figure 2 is a side cross-sectional view showing the position of the water level sensor installed in the purified water and cold water tank,

3 is a partial block circuit diagram of a conventional water purifier;

4 is a flowchart for explaining a water level control method of a water purifier having two water tanks according to the present invention.

* Explanation of symbols for main parts of the drawings

1: raw water valve 2: high turbidity filter,

3: settling filter 4: pump

5: all carbon filter 6: membrane filter

7: wastewater regulator 8: fucarbon filter

9: sterilization filter 10: water purification tank

11: single stage switch 12: cold water tank

13 check valve 15 main controller

100,120: Common sensor 101,121: Lower sensor

102,122: low sensor 103,123: high sensor

104: overflow sensor

The method of the present invention as described above will be described using the flowchart of FIG.

According to the present invention, first, the water level detection sensors installed in the purified water tank 10 and the cold water tank 12 are detected to be defective. This is done in the following way. Under normal operating conditions, the output values from the sensors 101, 102, 103, 104, 121, 122, 123 change according to the water level of the purified water and cold water tanks 10, 12. That is, when the constant W reaches the position of the high sensor 103 as shown in the water purification tank 10 of FIG. 2, the constant water is also contacted to the lower sensor 101 and the low sensor 102. Accordingly, each of the water level sensors 101, 102, and 103 generates an electrical signal due to the resistance of water (this is a current due to the conduction action of an integer). This is an electrical signal different from the overflow sensor 104 in which the constant does not reach. Table 1 below is a table showing the normal sensor output value according to the arrival state of the constant (W). The data in Table 1 is converted by the conventional method and stored in the main control unit 15.

Lower sensor Low sensor High sensor Overflow sensor Air (0) Air (0) Air (0) Air (0) Water (1) Air (0) Air (0) Air (0) Water (1) Water (1) Air (0) Air (0) Water (1) Water (1) Water (1) Air (0) Water (1) Water (1) Water (1) Water (1)

In the normal state, the state of the sensor, that is, 0 represents a state of contact between the air without an integer and the sensor, and 1 represents a state of contact with the sensor due to the introduction of an integer. That is, when the purified water filtered by the water filter reaches the low sensor 102, the signal output from the low sensor 102 is displayed as 1. The electrical signals input from the sensors thus have two kinds of states, 0 and 1 states. These electrical signals are input to the main controller 15 which controls the whole stroke. Of course, the signals 0 and 1 can be interchanged according to the setting state at the time of design.

Since the main controller 15 stores data, the main controller 15 detects signal values input from the water level sensors 101, 102, 103, and 104 and compares them with the stored data. If the state of the input sensor signal value is one of the stored state, the main control unit 15 sets the cold water level to be normal, and if it is not one of the states, the main control unit 15 sets the cold water level to be bad. Done. This setting state is stored in the memory of the main controller 15.

When the measurement of the defects of the sensors for measuring the water level of the water purification tank 10 is completed, the measurement of the defects of the sensors 121, 122, 123 for measuring the water level of the cold water tank 12 is performed. This measurement is essentially the same process as the sensors of the water tank (10). However, among the sensors of the cold water tank 12, only the lower sensor 121, the low sensor 122, and the high sensor 123 are included and the overflow sensor is not included, so the state of the sensor is a state except the overflow sensor 104. Is normal.

For example, when the electric signal values input from the lower sensor 121, the low sensor 122, and the high sensor 123 become 1,0, 1, the sensor cannot be expressed in the normal state of Table 1, It will be recognized as a bad. If the state of the input signal value is one of the states shown in Table 1 above, the main control unit 15 sets the cold water level to be normal. If the state is not one of the states, the main control unit 15 sets the cold water level. It is set as bad. This setting state is stored in the memory of the main control unit 15 similarly to the water level sensor state of the water purification tank 10.

When the failure of the water level sensor is detected as described above, the main controller 15 performs the water purification operation using the detected data. Although two water tanks have been described as examples of the purified water tank 10 and the cold water tank 12 in the above description, it will be apparent to those skilled in the art that the two tanks may be a hot water tank and a cold water tank. .

In the state where the water purification is stopped, the main control unit 15 determines whether the water level sensors of the current water purifier are broken by using the data shown in Table 1 above. If a failure occurs in any of the water level sensors 101, 102, 103, and 104 installed in the water purification tank 10, that is, the main control unit 15 determines that all of the water level sensors of the water purification tank 10 are defective. If any of the water level sensors (101, 102, 103, 014) does not cause a failure, the main control unit 15 recognizes the normal operation state and detects the purified water level, and if the water level of the purified water tank 10 is above L, the purified water stop state is maintained. If less than L, the raw water valve (1) and the pump (4) is operated to supply the raw water.

If the water level sensor is in a bad state, the main control unit 15 determines whether the cold water level sensor is bad again, that is, any one of the water level sensors 121, 122, and 123 stored in the cold water tank 12 has failed. If a failure occurs in any of the water level sensors 121, 122, and 123 installed in the cold water tank 12, the main control unit 15 determines that all of the water level sensors in the cold water tank 12 are faulty. If a failure does not occur in any of the water level sensors 121, 122, and 123, the main controller 15 recognizes the normal operation state, and ignores all signals input from the water level sensors 101, 102, 103, and 104 of the purified water tank 10, and the cold water tank. By detecting the purified water level of (12), if the water level of the cold water tank 12 is more than H maintains the purified water stop state, if less than L operates the raw water valve (1) and the pump (4) and supplies the raw water.

Since there is a possibility that the water level sensor may be defective even while the water level operation is performed in a state where the water level is less than or equal to L, the water level detection stroke of the present invention is continuously performed. This is because even if a defect occurs during the integer row, the integer overflows or an impossibility occurs. Therefore, even after the start of water purification, if a failure occurs in one of the water level sensor installed in the water purification tank 10 or the cold water tank 12, the water supply is installed using a water level sensor installed in the tank does not occur.

Referring to FIG. 4 again, if the water level sensor detection result of the main control unit 15 after water purification is started, a water level failure, that is, any one of the water level sensors (101, 102, 103, 104) installed in the water purification tank 10, the cold water level Inspect for defects. If the cold water level is normal, that is, no failure occurs in any of the water level sensors 121, 122, and 123 of the cold water tank 12, the cold water level is measured. If the water level sensors are not bad and the cold water level is bad, measure the water level. If the water level is above H, stop the water purification and if it is below L, continue the water purification.

According to the method of the present invention as described above, when the purified water is performed while the water purifier is in operation, 1) when the purified water level is below L while the purified water level sensor (101, 102, 103, 104) is normal, 2) the defective water level sensor When the cold water level sensor is normal and the cold water level is below L, 3) When the water level does not detect more than H when the initial power is turned on, 4) The water level detects more than H when the water purification start button is turned on. It's like when you don't. In the case of 3), 4), this is the case when the water purifier is first installed or when the water purification is forcibly started.

In addition, if the purified water operation is stopped, 1) When both the purified water and cold water level sensors are normal, when the purified water level sensor or the cold water level sensor detects the H error after the purified water operation, 2) When the purified water level sensor is defective When cold water level sensor is normal and detects H error, 3) When the water level sensor detects H error while the cold water level sensor is defective, 4) When water is generated during water purifying operation, 5) When water leak occurs do. In the case of 4) and 5), the water level switch 11 and the leak detection sensor (not shown) are respectively operated.

According to the present invention as described above, even if a failure occurs in the water level sensor to measure the water level is installed in each storage tank to prevent the water tank overflows, and also uses a water level sensor that does not occur There is an advantage that can perform the normal operation normally.

Although the invention has been described in detail only with respect to the described embodiments, it will be apparent to those skilled in the art that modifications and variations can be made within the spirit and scope of the invention, and such variations or modifications will belong to the appended claims. .

Claims (2)

The first step of judging whether the water level sensor (101, 102, 103, 104) (121, 122, 123) installed in the water purification tank 10 and the cold water tank 12 (121, 122, 123) is defective, the water level sensor (101, 102, 103, 104) installed in the water purification tank (10) At least one of the water level sensors 121, 122, and 23 installed in the cold water tank 12 to perform a water purifying operation based on the water level sensor installed in the cold water tank 12 when a failure occurs in at least one of In the third step of performing the water purifying operation based on the water level sensor installed in the water purification tank 10 and at least one of the water level sensors installed in the water purification tank 10 and the water level sensor installed in the cold water tank 12 The water level control method of the water purifier with two water tanks, characterized in that comprises a fourth step of stopping the water supply and at the main control unit 15 to indicate the water level sensor failure to the outside when at least one failure occurs. 2. The water tank according to claim 1, wherein if the water level measured by the water level sensor is higher than H in the second and third steps, the water purification stroke is stopped, and if the water level is less than L, water purification stroke is performed. Water level control method of water purifier.