KR20140021401A - Apparatus for inspecting water purifier and method for inspecting water purifier - Google Patents

Apparatus for inspecting water purifier and method for inspecting water purifier Download PDF

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Publication number
KR20140021401A
KR20140021401A KR1020120087900A KR20120087900A KR20140021401A KR 20140021401 A KR20140021401 A KR 20140021401A KR 1020120087900 A KR1020120087900 A KR 1020120087900A KR 20120087900 A KR20120087900 A KR 20120087900A KR 20140021401 A KR20140021401 A KR 20140021401A
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South Korea
Prior art keywords
valve
water
water purifier
north
vacuum
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KR1020120087900A
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Korean (ko)
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이인탁
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코웨이 주식회사
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Priority to KR1020120087900A priority Critical patent/KR20140021401A/en
Publication of KR20140021401A publication Critical patent/KR20140021401A/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/153—Anti-leakage or anti-return valves
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/12—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water
    • G01M3/14—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing elastic covers or coatings, e.g. soapy water for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The present invention relates to a device for inspecting the operation of a water purifier and a method for inspecting the operation of a water purifier using the same. The method for inspecting the operation of a water purifier, according to an embodiment of the present invention, includes the following: an airtight inspection step for confirming the water leakage of a water purifier by vacuumizing the inner flow path of the water purifier and measuring the pressure inside the inner flow path; and a valve inspection step for checking the operation of a valve connected to the vacuumized inner flow path by opening and closing the valve and detecting changes in the pressure inside the inner flow path, when it is confirmed that there is no water leakage. [Reference numerals] (110) Vacuum generating unit; (120) Valve control unit; (130) Determining unit; (210) Main tank unit; (220) Filter unit

Description

Apparatus for inspecting water purifier and method for inspecting water purifier

The present invention relates to a water purifier operation test apparatus and a method for inspecting the operation of the water purifier using the same, and more particularly, to a water purifier operation test apparatus capable of inspecting whether the internal flow path of the water purifier leaks and the operation of the valve, and a method for testing the operation of the water purifier using the same. will be.

Recently, the use of water purifiers in various spaces including homes has been rapidly spreading in order to effectively obtain clean purified drinking water. A water purifier is a device for filtering natural water such as tap water or ground water (hereinafter referred to as 'raw water'), and removes foreign substances or harmful substances contained in raw water by filtering raw water through several filters. Thereby providing drinking water.

The water purifier may include various types of sensors and valves, a heater, a cooler, an ice maker, a filter, and the like, and supply hot water, cold water, ice, and purified water required by the user.

However, in the process of producing the water purifier, a defect may occur due to various reasons such as a defective connection or a defective part, and the water purifier may not be able to perform a normal operation due to the defect.

For example, if there is a hole in the internal flow path formed inside the water purifier or the binding between the internal flow paths is poor, water leakage may occur, which may cause problems such as waste of resources, inconvenience in use, and deterioration of reliability of the product. Can be.

In addition, if the hot water valve malfunctions or there is a problem with the valve that regulates the flow rate supplied to the heater, the user may be burned due to a sudden supply of hot water or a fire due to a fire due to overheating of the heater. This can cause great damage.

Therefore, there is a demand for a technology for preventing a defective product from being shipped by performing a water purifier operation test to determine whether there is a defect before shipping the water purifier.

An object of the present invention is to provide a water purifier operation test apparatus capable of inspecting whether water is leaked from an internal flow path of a water purifier and whether a valve is operated, and an operation test method of the water purifier using the same.

Water purifier operation inspection method according to an embodiment of the present invention, the airtight inspection step of making the internal flow path of the water purifier in a vacuum state, by measuring the pressure of the internal flow path to determine whether the water purifier leaks; And when it is determined that no water leakage occurs in the water purifier, opening and closing a valve connected to the internal flow passage in the vacuum state, and detecting a change in pressure of the internal flow passage according to opening and closing of the valve to determine whether the valve is operated. It may include a valve inspection step.

Wherein the airtight inspection step, the first valve for adjusting the flow rate of the raw water supplied to the filter unit of the water purifier and the third valve for adjusting the flow rate of the water discharged from the filter unit is closed, and included in the filter unit A vacuum preparation process of opening a second valve positioned between the plurality of filters; Connecting a vacuum line to the water outlet pipe of the filter part, and vacuuming the inside of the filter part by sucking the air contained in the filter part through the vacuum line; And detecting the pressure inside the filter unit and determining that no leakage occurs in the filter unit when the pressure inside the filter unit is kept constant, and leaking the filter unit when the pressure inside the filter unit changes. It may involve a confidentiality process that is deemed to occur.

Here, the valve inspection step, the first valve is opened, the air is sucked into the vacuum line connected to the outlet pipe in a state in which the second valve and the third valve is closed between the second valve and the third valve. A second valve inspection process of determining whether the second valve is operated by measuring the pressure change of the internal flow path according to the opening of the second valve by opening the second valve; And after inhaling air into the vacuum line with the first valve, the second valve, and the third valve open, closing the third valve to measure an internal pressure change according to the closing of the third valve. And a third valve inspection process for determining whether the third valve is in operation.

Here, the airtight inspection step, the water purification valve for adjusting the flow rate of the purified water supplied by the main tank of the water purifier, the hot water valve for adjusting the flow rate of hot water supplied by the heater of the water purifier and the flow rate of cold water supplied by the cooling unit of the water purifier Vacuum preparation process for closing the cold water valve to control the; A vacuum process of connecting a vacuum line to the inlet pipe of the main tank part, sucking air contained in the main tank part through the vacuum line, and vacuuming the inside of the main tank part; And measuring the pressure inside the main tank part, and if the pressure inside the main tank part is kept constant, determines that no leakage occurs in the main tank part, and if the pressure inside the main tank part changes, The tag portion may include a confidentiality determination process that determines that a leak occurs.

Here, the valve inspection step, the valve inspection preparation process for making the inside of the main tank vacuum by sucking air into the vacuum line connected to the inlet pipe of the main tank in a state in which the purified water valve, hot water valve and cold water valve are closed. And; After opening one of the purified water valve, the hot water valve and the cold water valve, by measuring the pressure change inside the main tank according to the opening of the valve, it may include a valve inspection process for determining whether the operation of the valve. have.

Water purifier operation test apparatus according to an embodiment of the present invention, connected to the water purifier, the vacuum generating unit for making the interior of the water purifier in a vacuum state; A valve control unit connected to at least one valve for controlling opening and closing of an internal flow path included in the water purifier, and controlling opening and closing of the valve; And a determination unit for detecting whether the water is leaked by detecting the internal pressure of the water purifier in the vacuum state, and determining whether the valve is operated by sensing the internal pressure of the water purifier according to the opening and closing of the valve in the vacuum state. It may include.

According to the water purifier operation test apparatus and the water purifier operation test method using the same according to an embodiment of the present invention, since the airtight inspection of the water purifier is performed without using water, production, shipping, transport, Eliminate problems with storage and installation.

According to the water purifier operation inspection apparatus and the water purifier operation inspection method using the same according to an embodiment of the present invention, it is possible to determine whether the valve included in the water purifier actually operates, so that the water purifier that is defective, such as a malfunction of the valve, is shipped. You can prevent it.

1 is a block diagram showing a water purifier and a water purifier operation test apparatus according to an embodiment of the present invention.
Figure 2 is a flow chart showing a water purifier operation test method according to an embodiment of the present invention.
3 and 4 are schematic diagrams of inspecting a filter unit of the water purifier using the water purifier operation test apparatus according to an embodiment of the present invention.
5 is a schematic diagram of inspecting the main tank of the water purifier by using the water purifier operation test apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the detailed description of known functions and configurations incorporated herein will be omitted when it may unnecessarily obscure the subject matter of the present invention.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and like parts are denoted by similar reference numerals throughout the specification.

Also, when a part is referred to as "including " an element, it does not exclude other elements unless specifically stated otherwise.

1 is a block diagram showing a water purifier and a water purifier operation test apparatus according to an embodiment of the present invention.

1, the water purifier operation test apparatus 100 according to an embodiment of the present invention, may include a vacuum generating unit 110, a valve control unit 120 and the determination unit 130, of the present invention The water purifier 200 according to an embodiment may include a main tank 210 and a filter 220.

Hereinafter, a water purifier operation test apparatus 100 according to an embodiment of the present invention will be described with reference to FIG. 1.

The water purifier operation test apparatus 100 according to an embodiment of the present invention may be used to check whether the water purifier 200 operates normally after producing the water purifier 200 and before shipping. In particular, the water purifier operation inspection apparatus 100 may be used to check whether the water purifier 200 leaks or whether the valve is operated. After making the internal flow path of the water purifier 200 in a vacuum state, the internal flow path By measuring the pressure of the leak can be confirmed whether the operation of the valve.

1 and 5, the water purifier including the main tank 210 is presented, but can also be inspected by using the water purifier operation test device for a direct water purifier that does not include a separate water tank.

Referring to FIG. 1, the water purifier 200 may be largely divided into a filter unit 220 and a main tank unit 210.

The filter unit 220 filters and purifies raw water flowing into the water purifier 200, and may include a plurality of filters therein. For example, a sediment filter, a pre-carbon filter, a membrane filter, and a post-carbon filter may be included. , Number, order may be changed according to the filtering performance required for the water purifier 200. In addition, the sediment filter and the hydrocarbon filter may be provided with a composite filter composed of a combination, it is also possible to add or replace various functional filters.

Looking briefly at each filter that may be included in the filter unit 220, the sediment filter is supplied with the raw water flowing into the water purifier to adsorb and remove relatively large suspended solids, such as sand and solid materials contained in the raw water. The precarbon filter is supplied with water that passes through the sediment filter, and the activated carbon absorbs the activated carbon, which causes harmful substances such as volatile organic compounds, carcinogens, synthetic detergents, and insecticides. It can perform the function of removing the component. The post carbon filter functions to adsorb and remove unpleasant tastes, odors, and pigments of the water filtered from the membrane filter, and purified water filtered through the post carbon filter may be supplied to and stored in the main tank 210. In addition, the membrane filter may be provided between the composite filter and the post carbon filter, and the membrane filter may be configured to adjust the amount of the ionic substance contained in the introduced water.

The main tank unit 210 may store the purified water generated by the filter unit 220 and then process and supply the purified water in a desired form. Specifically, the main tank unit 210, in addition to the purified water tank for storing purified water, a heater for heating the purified water to generate hot water, a cooling unit for cooling the purified water to generate cold water and the purified water to cool the ice It may further include the configuration of the ice generator to generate, such as by using the above configuration can be processed into a user desired form.

The raw water supplied to the water purifier 200 is processed through the filter 220 and the main tank 210 and then supplied to the user, and the raw water moves along an internal flow path formed in the water purifier 200. At this time, if there is a hole in the internal flow path of the water purifier 200 or if the binding between the internal flow paths is not well made, water leakage may occur. Since the leak is a problem in terms of waste of resources, inconvenience in use, deterioration of reliability of the product, etc., it is necessary to check whether the water purifier leaks before shipping the water purifier. In addition, when the valve used in the water purifier malfunctions or does not operate, it may cause burns to the user, and furthermore, there may be a risk of fire caused by overheating of the heater, and thus the inspection of the valve is necessary.

Therefore, by using the water purifier operation inspection apparatus 100 and the water purifier inspection method according to an embodiment of the present invention, after confirming the leakage of the water purifier 200 and the operation of the valve can be checked, it can be shipped. .

In detail, the vacuum generator 110 of the water purifier operation test apparatus 100 may be connected to the water purifier 200 to make the inside of the water purifier 200 into a vacuum state. The vacuum generating unit 110 may further include a separate vacuum line, and after connecting the vacuum line with the internal flow path of the water purifier 200, may suck air into the vacuum line. When the internal flow path of the water purifier 200 is closed, the internal flow path of the water purifier 200 may be in a vacuum state by the vacuum generating unit 110. At this time, the configuration of the filter portion, the main tank portion, etc. connected to the inner passage may also be in a vacuum state.

The valve control unit 120 may be connected to at least one valve for controlling opening and closing of the internal flow path included in the water purifier 200, and may control opening and closing of the valve. Here, the valve may be a solenoid valve for opening and closing the valve according to the magnitude of the voltage or current to be applied, and when connected to the valve control unit 120 is controlled according to the magnitude of the voltage or current supplied by the valve control unit 120. Can be. When the valve control unit 120 is used, a specific portion of the internal flow path of the water purifier 200 may be sealed using the valve, and the vacuum may be applied to the sealed portion using the vacuum generating unit 110. Can be formed. The valve control unit 120 may open and close the opening and closing sequence of the plurality of valves according to a preset sequence, and the part of the internal passage may be changed according to the sequence.

The determination unit 130 detects whether the water purifier 200 is leaked by detecting an internal pressure of the water purifier 200 in the vacuum state, and determines whether the water purifier 200 is open or closed in the vacuum state. The internal pressure may be sensed to determine whether the valve is in operation.

First, in relation to the leakage check, by using the valve control unit 120 and the vacuum generating unit 110 to make a desired portion of the internal flow path of the water purifier 200 in a vacuum state, by measuring the pressure of the internal flow path It may be determined whether the water purifier 200 leaks. If there is a hole or a poor binding in the inner flow path in which the vacuum is formed, air will be introduced from the outside, and in this case, the air inflow can be confirmed by measuring the pressure in the inner flow path. Therefore, it is possible to determine whether or not the water purifier 200 is leaked by measuring the pressure of the internal flow path in which the vacuum state is formed.

In addition, in relation to the valve operation determination, it is possible to determine whether the operation of the valve by forming a vacuum state in the internal flow path closed by the valve, and then to open the valve. When the valve is opened in a vacuum state, the pressure in the internal passage may suddenly disappear and the pressure may change rapidly. Therefore, by detecting a sudden pressure change occurring after the valve operation, it is possible to determine whether the valve is operating normally. That is, the maintenance of the vacuum in the internal flow path by the valve means that the valve is normally closed, and the disappearance of the vacuum state by the operation of the valve means that the valve is normally opened. The operation of the valve can be judged. Therefore, by using the water purifier operation inspection apparatus 100, it is possible to check whether the water purifier 200 is airtight and whether the valve operation. Here, the valve control unit 120 and the determination unit 130 may be implemented in one configuration.

In addition, the water purifier operation inspection apparatus 100 may further include a measurement unit for measuring the magnitude of the voltage or current applied to the valve. Since the valve is operated according to the magnitude of the current or the voltage applied to the valve as described above, it is possible to check whether the current or the voltage is normally applied to the valve using the measurement unit. In addition, even though a voltage or current for opening the valve is applied, if the vacuum state is maintained, it may be determined that there is a problem with the valve.

Figure 2 is a flow chart showing a water purifier operation test method according to an embodiment of the present invention.

2, the water purifier operation test method according to an embodiment of the present invention may include an airtight test step (S10) and a valve test step (S20).

Hereinafter, a water purifier operation test method according to an embodiment of the present invention will be described with reference to FIG. 2.

In the airtightness inspection step (S10), the internal flow path of the water purifier may be vacuumed, and the pressure of the internal flow path may be measured to determine whether or not the water purifier leaks. As described above, after closing a part of the internal flow path by adjusting the opening and closing of the valve located inside the water purifier, the internal flow path may be vacuumed by sucking air in the sealed internal flow path. At this time, a vacuum state may also be formed inside the main tank and the filter unit connected to the sealed internal flow path. In the vacuum state, the pressure may be kept constant, but if the flaw is present in the internal flow path or there is a poor binding, the pressure may drop or may not be kept constant. This is because external air may flow between the gaps due to the flaw or poor binding. Therefore, after the vacuum is formed, it is possible to determine whether the internal flow path is kept airtight, that is, whether leakage occurs by measuring the pressure in the internal flow path.

In the valve inspection step S20, when it is determined that no water leakage occurs in the water purifier, the valve is opened and closed, and a pressure change of the internal flow path is detected by opening and closing the valve. The operation of the valve can be determined. As described above, when the valve is opened in a vacuum state, the pressure in the internal passage may suddenly disappear and the pressure may change rapidly. Therefore, by detecting a sudden pressure change occurring after the valve operation, it is possible to determine whether the valve is operating normally. Here, the valve inspection step (S20) can be confirmed whether the operation of the plurality of valves located in the water purifier by operating the valve in sequence.

3 is a schematic diagram of inspecting a filter portion of a water purifier using the water purifier operation test apparatus according to an embodiment of the present invention. Hereinafter, referring to FIG. 3, the leakage discrimination determination and the valve operation inspection of the filter unit of the water purifier will be described in detail.

First, in order to determine whether the water leaks to the filter unit 220 of the water purifier, the inside of the filter unit 220 may be made in a vacuum state. To this end, the water inlet (P) of the filter unit 220 is closed, and the feed valve (224) and the North valve (NOS valve, 225) for adjusting the flow rate of the raw water supplied to the filter unit 220 ) Can be opened. At this time, the vacuum line of the water purifier operation test apparatus 100 may be connected to the living water pipe (a) of the membrane filter 222 and the water outlet pipe (b) of the post carbon filter 223. In this case, the inside of the filter unit 220, that is, through the water inlet (P) through the composite filter 221, the membrane filter 222 and the post carbon filter 223, all the outlet pipe (b) all in one flow path The air filter may be connected, and when the air is sucked into the vacuum line, the inside of the filter unit 220 may be vacuumed.

When the vacuum state is formed inside the filter unit 220, the determination unit 130 may detect the pressure inside the filter unit 220 to determine whether airtightness is maintained inside the filter unit 220. . That is, when the pressure inside the filter unit 220 is kept constant, it is determined that no leakage occurs in the filter unit 220, and when the pressure inside the filter unit 220 changes, the filter unit 220 changes. It can be judged that a leak occurs at. Specifically, it is possible to detect the internal pressure of the filter unit 220 from the vacuum line connected to the living water pipe (a) and the post carbon filter 223. For example, the determination unit 130 may determine that a leak occurs in the filter unit 220 when the maximum change in pressure in the vacuum state is equal to or greater than a preset pressure change amount (for example, 0.041 psig). have.

Here, the purge valve included in the water purifier operation test apparatus 100 may be connected to the water inlet unit P in order to close the water inlet unit P of the filter unit 220. The purge valve may be configured as a solenoid valve, and the inlet portion P may be sealed by closing the purge valve. In addition, the feed valve 224 may be in a closed state before a predetermined voltage or current is applied, and the north valve 225 may be in an open state before a predetermined voltage or current is applied. Accordingly, in order to open both the feed valve 224 and the north valve 225, the valve control unit 120 of the water purifier operation test apparatus 100 applies a preset current or voltage to the feed valve 224. In addition, a current or a voltage may not be applied to the north valve 2250.

The valve operation inspection of the filter unit 220 of the water purifier may be continuously performed after the leakage determination of the filter unit 220. First, after determining whether the feed valve 224 is operated, the north valve 225 is determined. It can be determined whether the operation for.

Specifically, in order to inspect the feed valve 224, the inlet portion P and the north valve 225 may be opened and the feed valve 224 may be closed. In this case, an internal flow path from the feed valve 224 to the water discharge pipe b of the membrane filter 222, the post carbon filter 223, and the post carbon filter 223 may be sealed, and the vacuum generating unit ( 110 may be used to form a vacuum in the inner flow passage. Thereafter, when the feed valve 224 is opened, the pressure in the internal flow path changes, so that the normal operation of the feed valve 224 may be determined by measuring the pressure change in the internal flow path. Here, the purge valve of the water purifier operation test apparatus 100 may be connected to the inlet portion P, and the purge valve may be in an open state. Therefore, the pressure change according to the opening of the feed valve 224 may be applied to the water purifier operation inspection apparatus 100 through the purge valve. Therefore, when the pressure change according to the opening of the feed valve 224 is more than a preset pressure change amount (eg, 2 psig), it may be determined that the feed valve 225 is normally opened.

Thereafter, the inlet part P and the feed valve 224 may be opened to inspect the north valve 225, and the north valve 225 may be closed. In this case, an internal flow path from the north valve 225 to the membrane filter 222, the post carbon filter 223, and the outlet pipe (b) may be sealed, and likewise, the inside using the vacuum generating unit 110 may be sealed. A vacuum state can be formed in the flow path. In this case, when the north valve 225 is opened, the pressure in the internal flow path changes according to the opening of the north valve 225, and the pressure change may be measured to determine whether the north valve 225 is opened. . As described above, the purge valve of the water purifier operation test apparatus 100 may be connected to the inlet portion P, and the purge valve may be in an open state. Therefore, when the north valve 225 is opened, a pressure change due to the opening of the north valve 225 through the purge valve may be applied to the water purifier operation test apparatus 100. Similarly, when the pressure change is more than a preset pressure change amount (eg, 2 psig), it may be determined that the supply valve 226 is normally opened.

In addition, the magnitude of the current or voltage applied to the feed valve 224 and the north valve 225 may be measured using a measurement unit included in the water purifier operation test apparatus 100. In order to open the feed valve 224 or close the north valve 225, a current or voltage having a predetermined magnitude must be applied. Therefore, by checking whether the current or voltage of the predetermined magnitude is applied to the feed valve 224 and the north valve 225, it is possible to confirm whether the valve is normally operated. That is, it is possible to determine whether the valve is normally operated according to the magnitude of the current or voltage applied along with the change in pressure according to the operation of the feed valve 224 and the north valve 225. For example, when the magnitude of the current applied to the feed valve 224 and the north valve 225 is 189 mA to 231 mA, the feed valve 224 and the north valve 225 may be regarded as normally operating.

FIG. 4 is a schematic diagram of inspecting the filter portion of the water purifier using the water purifier operation test apparatus according to an embodiment of the present invention, showing the filter portion inspection of the sterilized ice water purifier having a filter portion different from that of FIG. Hereinafter, with reference to FIG. 4, the water leakage discrimination and valve operation inspection of the filter portion of the sterilized ice water purifier will be described.

The water purifier shown in FIG. 4 relates to a sterilized ice water purifier, wherein the sterilized ice water purifier may process purified raw water to generate purified water, hot water, cold water and ice, and directly sterilize the inside of the water purifier by generating sterilized water. can do. The generated purified water, hot water, cold water and ice may be stored in the purified water tank (T1), hot water tank (T2), cold water tank (T3) and ice storage (T4), respectively, and provided to the user according to the user's request. Here, the sterilizing water may be generated in the sterilization module (sm) included in the sterilizing ice water purifier, and using the sterilizing water, the purified water tank (T1), hot water tank (T2), cold water tank (T3) and ice storage In addition to (T4), it is possible to perform sterilization on the internal flow path. Specifically, the sterilized ice water purifier may operate in a normal mode for generating purified water, hot water, cold water, and ice, and in a sterilization mode for sterilizing the purified water tank T1, the hot water tank T2, and the like.

In the normal mode, the raw water is filtered through the composite filter and then the sterilization feed valve (V2) is closed and the purified water feed valve (V3) is opened to filter the water filtered by the composite filter (221) and the membrane filter (222) and The post carbon filter 223 can be supplied. Thereafter, the purified water discharged from the post carbon filter 223 flows into the purified water tank T1, and is supplied again from the purified water tank T1 to the hot water tank T2, the cold water tank T3, and the ice generator to supply hot water. It can produce cold water and ice. The generated purified water, hot water, cold water and ice may be stored in the purified water tank (T1), hot water tank (T2), cold water tank (T3) and ice storage (T4), respectively. Here, the ice stored in the ice reservoir T4 may be partially melted, and the melted water may be discharged out of the ice reservoir through the ice drain valve V4.

In the sterilization mode, the supplied raw water is filtered through the composite filter 221, and then the sterilization feed valve V2 is opened and the purified water feed valve V3 is closed to sterilize the water discharged from the composite filter 221. (sm) can be supplied. The sterilization module sm may generate sterilization water using the supplied water, and the sterilization water may be the purified water tank T1, the hot water tank T2, the cold water tank T3, the ice reservoir T4, and the like. It may be supplied to the internal flow path connecting the respective tanks. The sterilizing water may include a material having a sterilizing function, such as an oxidizing mixed material (MO), and thus may remove bacteria and contaminants that may exist in the respective tanks and internal flow paths. Here, when the sterilization of each tank and the internal flow path using the sterilizing water is finished, the wash water rinsing the sterilizing water and the sterilizing water may be discharged to the outside through the sterilizing drain valve (V5).

First, in order to determine whether or not the filter unit 220 of the sterilized ice water purifier, as described above, it is possible to make the inside of the filter unit 220 in a vacuum state, the vacuum line of the water purifier operation test device 100 May be connected to the filter unit 220.

Specifically, the north valve (V1), the purified water feed valve (V3) and the sterilization feed valve (V2) of the filter unit 220 is opened, the inlet (P), ice drain valve (V4) and sterilization drain valve ( V5) can be closed. In this case, the vacuum line may be connected to the living water pipe (a) of the membrane filter 222 and the water outlet pipe (b) of the post carbon filter. In this case, the inner flow passage connected to the water outlet pipe (b) through the water inlet (P), the composite filter 221, the membrane filter 222 and the post carbon filter 223, and the ice drainage from the living water pipe (a) All of the internal flow paths connected to the valve V4 and the sterilization drain valve V5 may be connected to one flow path. Therefore, after controlling the opening and closing of the valve as described above, by sucking the air using the vacuum line connected to the living water pipe (a) and the water outlet pipe (b) can make the inside of the filter unit 220 in a vacuum state. have.

When the vacuum state is formed inside the filter unit 220, as in the above salping bar, the determination unit 130 senses the pressure inside the filter unit 220 to maintain whether the airtightness is maintained inside the filter unit 220. You can check. That is, when the pressure inside the filter unit 220 is kept constant, it is determined that no leakage occurs in the filter, and when the pressure inside the filter unit 220 changes, leakage occurs in the filter unit 220. It can be judged that. For example, the determination unit 130 may determine that a leak occurs in the filter unit 220 when the maximum change in pressure in the vacuum state is equal to or greater than a preset pressure change amount (for example, 0.041 psig). have.

As described above, the purge valve may be connected to the inlet P to close the inlet P, and the purified water feed valve V3, the sterilizing feed valve V2, and the ice drain valve V4 may be closed. And the sterilization drain valve V5 may remain closed until a predetermined voltage or current is applied, and the north valve V1 may remain open until a predetermined current or voltage is applied. have. Therefore, in order to make the inside of the filter unit 220 in a vacuum state, a predetermined voltage or current is applied to the purified water feed valve V3 and the sterilizing feed valve V2, and the north valve V1 and the ice drain valve ( V4) and the sterilization drain valve V5 may not be applied with a predetermined voltage or current.

The valve operation inspection of the filter 220 of the ice water purifier may be continuously performed after determining whether the filter 220 is leaked, and the north valve (V1), the sterilization feed valve (V2), and the purified water may be continuously performed. Each valve operation test may be performed in the order of the feed valve V3, the ice drain valve V4, and the sterilization drain valve V5.

Specifically, in order to inspect the north valve (V1), the inlet (P), the sterilization feed valve (V2), the purified water feed valve (V3) is opened, the north valve (V1), ice drain valve (V4) and sterilization The drain valve V5 can be closed. In this case, the water discharge pipe is passed through the sterilization module sm through the internal flow path connected from the north valve V1 to the membrane filter 222, the post carbon filter 223, and the water outlet pipe b and the north valve V1. An internal flow passage connected to (b) may be sealed, and a vacuum state may be formed in the internal flow passage using the vacuum generating unit 110. Thereafter, when the north valve V1 is opened, the pressure in the inner channel changes, so that the normal operation of the north valve V1 can be determined by measuring the pressure change in the inner channel. Here, the purge valve of the water purifier operation test apparatus 100 may be connected to the inlet portion P, and the purge valve may be in an open state. Therefore, when the north valve V1 is opened, a pressure change according to the opening of the north valve V1 may be applied to the water purifier operation test apparatus 100 through the purge valve, and the water purifier operation test apparatus ( 100 may determine whether the north valve V1 operates normally by detecting the pressure change. Here, when the pressure change according to the opening of the north valve (V1) is more than a predetermined pressure change amount (for example, 2psig), it can be seen that the north valve (V1) is normally opened.

Then, in order to inspect the sterilization feed valve (V2), the inlet (P) and the north valve (V1) is opened, the sterilization feed valve (V2), purified water feed valve (V3), ice drain valve (V4) and sterilization drainage The valve V5 can be closed. In this case, an internal flow path connected from the sterilization feed valve V2 to the water discharge pipe b through the sterilization module sm, the membrane filter 222, the post carbon filter 223, and the water discharge from the purified water feed valve V3. The internal flow path connected to the pipe (b) may be closed. Therefore, after the vacuum is formed in the internal passage using the vacuum generating unit 110, the sterilization feed valve (V2) can be opened. When the sterilization feed valve v2 is opened, the pressure in the internal flow passage changes, so that the normal operation of the sterilization feed valve V2 can be determined by measuring the pressure change in the internal flow passage. Similarly, it is possible to measure the pressure change of the internal flow path through the purge valve connected to the inlet portion (P), it is possible to determine whether or not the normal operation of the sterilization feed valve (V2).

Next, in order to inspect the purified water feed valve V3, the inlet portion P and the north valve V1 are opened, and the purified water feed valve V2, the sterilization feed valve V3, the ice drain valve V4, and the sterilization The drain valve V5 can be closed. In this case, the same internal flow path as when the sterilization feed valve V2 is inspected is sealed. Thus, the vacuum generating unit 110 may be used to form a vacuum state in the internal flow path, and then the pressure in the internal flow path is measured by opening the purified water feed valve V2. It is possible to determine whether the normal operation of. In this case, the purge valve may be used in the same manner as in the case of inspecting the operation of the sterilization feed valve (V2).

In addition, in order to inspect the ice drain valve V4, the inlet portion P and the north valve V1 are opened, and the sterilization feed valve V2, the purified water feed valve V3, the ice drain valve V4 and the sterilization The drain valve V5 can be closed. In this case, the internal flow path is sealed in the same manner as when the sterilization feed valve (V3) is inspected, and is connected to the ice drain valve (V4) through the water purification tank (T1) and the ice reservoir (T4) in the outlet pipe (b). The internal flow path and the internal flow path connected to the sterilization drain valve (V5) through the purified water tank (T1), the cold water tank (T3) can be sealed. Accordingly, the vacuum generating unit 110 may be used to form a vacuum state in the internal flow path, and then open the ice drain valve V4 to detect a pressure change caused by the opening of the ice drain valve V4. It is possible to determine whether the ice drain valve (V4) is operating normally.

Finally, in order to inspect the sterilization drain valve V5, the inlet portion P and the north valve V1 are opened, and the sterilization feed valve V2, the purified water feed valve V3, the ice drain valve V4 and The sterilization drain valve V5 can be closed. In this case, the internal flow path may be sealed in the same manner as in the case of inspecting the ice drain valve (V4). Therefore, a vacuum is formed in the internal flow path using the vacuum generating unit 110, and then, the sterilization drain valve V5 is opened to detect a pressure change due to the opening of the sterilization drain valve V5. By confirming that the sterilization drain valve is operating normally. Even when checking the operation of the ice drain valve (V4) and the sterilization drain valve (V5), it is possible to use the same to sense the pressure change occurring in the internal flow passage using the purge valve.

In addition, the north valve (V1), sterilization feed valve (V2), purified water feed valve (V3), ice drain valve (V4) and sterilization drain valve (V5) by using the measurement unit included in the water purifier operation test device 100 The magnitude of the current or voltage applied to the can be measured. In order to close the valves, a current or voltage having a predetermined magnitude needs to be applied, and thus it is possible to confirm whether the valve is normally operated by checking whether each of the valves has a current or voltage having the predetermined magnitude. . That is, it is possible to determine whether the valve operates normally according to the magnitude of the current or voltage applied along with the change in pressure according to the operation of the valve. For example, the magnitude of the current applied to each valve can be confirmed through the measurement unit. When the magnitude of the measured current value is 189 mA to 231 mA, the valve can be considered to operate normally.

5 is a schematic diagram of inspecting the main tank of the water purifier by using the water purifier operation test apparatus according to an embodiment of the present invention. Hereinafter, with reference to Fig. 5, the leakage check discrimination and valve operation inspection for the main tank of the water purifier will be described.

5 is a schematic view showing a main tank 210 of a general ice water purifier. In the purified water tank 216, purified water is supplied to the heater H, the cooling unit 217, the ice tray 219, and the like to provide hot water and cold water. , Ice, etc. can be produced. Here, an ice water purifier capable of producing hot water, cold water, purified water, and even ice is illustrated. However, the present invention also relates to a water purifier including at least one of a heater (H), a cooler, and an ice generator (im) in addition to the ice water purifier. Water purifier operation inspection apparatus and a water purifier inspection method according to an embodiment of the can be applied.

The purified water tank 216 of the ice purifier may store purified water generated by the filter 220. The purified water stored in the purified water tank 216 may be provided to the user through the purified water valve 211.

The heater H may heat the purified water supplied from the purified water tank 216 to generate hot water having a target temperature required by the user, and may be provided to the user through the hot water valve 212. The heater (H) may include a hot water tank containing the purified water supplied by the purified water tank 216, and may be to generate hot water having the target temperature by heating the water stored in the hot water tank. Alternatively, without providing a separate hot water tank, the hot water may be instantaneously heated according to a user's hot water extraction instruction to supply hot water having a target temperature.

The ice maker im may cool the water contained in the ice tray 219 to generate ice. The ice generated by the ice maker im may be provided to the ice storage 218 or the cooling unit 217, and the position where the ice is provided may be determined using the selector bar S. FIG. That is, the selector bar S guides the ice falling from the ice generator im and may be provided to either the ice storage 218 or the cooling unit 217. The ice maker (im) further includes a heater, so that the generated ice can be easily separated from the ice generator (im), the ice tray 219 is rotated so as not to obstruct the fall path of the ice Can be. The purified water accommodated in the ice tray 219 may be supplied from the purified water tank 216 through the ice tray valve 215.

The cooling unit 217 cools the purified water supplied through the forward cooling valve 214 to generate cold water using the ice provided by the ice generator im. Here, the ice is cooled, but in another embodiment of the present invention, it is also possible to directly cool the supplied purified water by using a phase change of a thermoelectric element or a refrigerant to generate cold water. The cold water generated in the cooling unit 217 may be provided to the user through the cold water valve 213.

First, in order to determine whether the water leaks to the main tank part 210 of the water purifier, the inside of the main tank part 210 may be made in a vacuum state, and the vacuum line of the water purifier operation test apparatus 100 is connected to the main tank part ( 210). At this time, the vacuum line may be connected to the inlet pipe of the water purification tank 216. Thereafter, the purified water tank 216 adjusts the flow rate of the purified water supplied to the user, the hot water valve 212 for adjusting the flow rate of the hot water supplied to the user H, the cooling unit 217 The cold water valve 213 for adjusting the flow rate of the cold water supplied to the user), the constant cooling valve 214 and the purified water tank 216 for adjusting the flow rate of the purified water supplied to the cooling unit 217 by the purified water tank 216 is The ice tray valve 215 for adjusting the flow rate of the purified water supplied to the ice tray 219 may be closed to seal the inside of the main tank part 210. Here, opening / closing of the purified water valve 211, the hot water valve 212, the cold water valve 213, the positive cooling valve 214, and the ice tray valve 215 may be controlled using the valve control unit 120.

When the inside of the main tank 210 is sealed, the inside of the main tank 210 may be sucked into the vacuum generating unit 110 to make the inside of the main tank 210 in a vacuum state.

When a vacuum is formed in the main tank 210, the determination unit 130 senses the pressure in the main tank 210 to determine whether airtightness is maintained in the main tank 210. You can check it. That is, when the pressure inside the main tank 210 is kept constant, it is determined that no leakage occurs in the main tank 210, and when the pressure inside the main tank 210 changes, the main tank It may be determined that a leak occurs in the unit 210. In this case, the determination unit 130 may determine that a leakage occurs in the main tank 210 when the maximum change in pressure in the vacuum state is greater than or equal to a preset pressure change.

The valve operation test for the main tank 210 may be continuously performed after the leak check for the main tank 210, and the purified water valve 211, the hot water valve 212, and the cooling valve 214 may be used. ), The cold water valve 213 and the ice tray valve 215 may be inspected sequentially.

First, in order to inspect the water purification valve 211, all the valves may be closed to seal the main tank 210, and a vacuum may be vacuumed inside the main tank 210 using the vacuum generator 110. Can form a state. Subsequently, by opening the purified water valve 211 and measuring the pressure change inside the main tank 210 according to the opening of the purified water valve 211, it is possible to determine whether the purified water valve 211 is operating normally. . Here, when the pressure change is greater than or equal to the preset pressure change amount, it may be determined that the purified water valve 211 is normally opened. After the inspection of the purified water valve 211, the inspection can be performed on the hot water valve 212 and the cooling valve 214 in the same manner, and then for the cold water valve 213 and the ice tray valve 215 Proceed to check. However, the contents of the present invention are not limited to the inspection order described above, and the inspection order may be arbitrarily selected.

After the inspection of the purified water valve 211, the hot water valve 212 and the cooling valve 214, the hot water valve 212, the purified water valve 211, the cooling valve 214, the ice tray valve 215 and cold water The valve 213 may be closed and an operation test may be performed on the cold water valve 213. That is, the cold water valve 213 may be opened, and the operation of the cold water valve 213 may be determined by detecting a change in pressure caused by the opening of the cold water valve 213.

Similarly, in the case of the ice tray valve 213, after closing the cold water valve 213 and the forward cooling valve 214, the ice tray valve 215 is opened to perform an operation test on the ice tray valve 215. Can be done. That is, it is possible to determine whether the ice tray valve 215 is operated by detecting a change in the pressure due to the opening of the ice tray valve 215.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventions. To those skilled in the art.

100: water purifier operation test device 110: vacuum generating unit
120: valve control unit 130: determination unit
200: water purifier 210: main tank portion
211: water purification valve 212: hot water valve
213: cold water valve 214: cold water valve
215: ice tray valve 216: water purification tank
217: cooling unit 218: ice storage
219: ice tray 220: filter unit
221: composite filter 222: membrane filter
223: post carbon filter
S10: leak tightness step S20: valve tightness step
S: Select Bar im: Ice Maker
H: heater

Claims (8)

Airtight inspection step of making the internal flow path of the water purifier into a vacuum state and measuring the pressure of the internal flow path to determine whether leakage of the water purifier occurs; And
If it is determined that no water leakage occurs in the water purifier, the valve which opens and closes the valve connected to the internal flow path in the vacuum state, senses the pressure change of the internal flow path according to the opening and closing of the valve, and determines whether the valve is operated. Water purifier operation inspection method comprising the inspection step.
The method of claim 1, wherein the confidentiality inspection step
A vacuum preparation process of closing an inlet portion into which the raw water flows into the filter portion of the water purifier, and opening a feed valve and a north valve to adjust a flow rate of the raw water supplied to the filter portion;
Connecting a vacuum line to the water outlet pipe of the filter part, and vacuuming the inside of the filter part by sucking the air contained in the filter part through the vacuum line; And
When the pressure inside the filter unit is sensed and the pressure inside the filter unit is kept constant, it is determined that no leakage occurs in the filter unit. When the pressure inside the filter unit changes above a predetermined value, the filter is determined. A water purifier operation inspection method including an airtight discrimination process that determines that leakage occurs in the unit.
The method of claim 2, wherein the valve inspection step
After the feed valve is closed and the north valve is opened, the air is sucked into the vacuum line connected to the outlet pipe of the filter unit to make a vacuum between the feed valve and the outlet pipe, and the feed valve is opened to open the feed valve. A feed valve inspection process of determining whether the feed valve is operated by measuring a pressure change of an internal flow path according to the opening of the feed valve; And
After the feed valve is opened and the north valve is closed, air is sucked into the vacuum line to make a vacuum between the north valve and the outlet pipe, and the north valve is opened to open an internal flow path according to the opening of the north valve. Water purifier operation inspection method comprising the North valve inspection process for determining whether the operation of the North valve by measuring the pressure change of the.
The method of claim 1, wherein the confidentiality inspection step
The water inlet part into which the raw water flows into the filter part of the water purifier is closed, a North valve for controlling the flow rate of the raw water supplied to the water purifier, a sterilization feed valve for branching the supplied raw water and supplying it to a sterilization module that generates sterilization water and the A vacuum preparation process of opening the purified water feed valve which supplies the filtered raw water to the filter unit to generate purified water;
Connecting a vacuum line to the water outlet pipe of the filter part, and vacuuming the inside of the filter part by sucking the air contained in the filter part through the vacuum line; And
When the pressure inside the filter unit is sensed and the pressure inside the filter unit is kept constant, it is determined that no leakage occurs in the filter unit. When the pressure inside the filter unit changes above a predetermined value, the filter A water purifier operation inspection method including an airtight discrimination process that determines that leakage occurs in the unit.
The method of claim 4, wherein the valve inspection step
The inlet, the sterilization feed valve and the purified water feed valve are opened and the north valve is closed, and the air is sucked into the vacuum line connected to the outlet pipe of the filter unit to make a vacuum between the north valve and the outlet pipe, and then the north A north valve inspection process of determining whether the north valve is operated by measuring a pressure change of an internal flow path according to opening of the north valve by opening a valve;
The water inlet and the north valve are opened, the sterilization feed valve and the water feed valve are closed, and the air is sucked into the vacuum line connected to the outlet pipe of the filter unit to make the vacuum between the sterilization feed valve and the purified water feed valve and the outlet pipe. A sterilization feed valve inspection process of determining whether the sterilization feed valve is operated by measuring the pressure change in the internal flow path according to the opening of the sterilization feed valve by opening the sterilization feed valve; And
The water inlet and the north valve are opened, the sterilization feed valve and the water feed valve are closed, and the air is sucked into the vacuum line connected to the outlet pipe of the filter unit to make the vacuum between the sterilization feed valve and the purified water feed valve and the outlet pipe. And a purified water feed valve inspection process of determining whether the purified water feed valve is operated by measuring a pressure change of an internal flow path according to opening of the purified water feed valve by opening the purified water feed valve.
The method of claim 1, wherein the confidentiality inspection step
Closes the purified water valve for adjusting the flow rate of purified water supplied by the main tank of the water purifier, the hot water valve for adjusting the flow rate of hot water supplied by the heater of the water purifier, and the cold water valve for adjusting the flow rate of cold water supplied by the cooling unit of the water purifier Vacuum preparation process;
Connecting a vacuum line to an inlet pipe of the main tank, and sucking the air contained in the main tank through the vacuum line to make the inside of the main tank into a vacuum state; And
By measuring the pressure inside the main tank, it is determined that no leakage occurs in the main tank if the pressure inside the main tank is kept constant, and if the pressure inside the main tank changes, the main tank leaks. Water purifier operation inspection method including the airtight discrimination process judged to be.
The method of claim 6, wherein the valve inspection step
A valve inspection preparation process of closing the purified water valve, the hot water valve, and the cold water valve and sucking air into the vacuum line to make the inside of the main tank into a vacuum state;
Water purifier operation including a valve inspection process for determining whether the valve is operated by measuring a pressure change in the main tank according to the opening of the valve after opening one of the purified water valve, the hot water valve and the cold water valve. method of inspection.
A vacuum generation unit connected to the water purifier and making the interior of the water purifier into a vacuum state;
A valve control unit connected to at least one valve for controlling opening and closing of an internal flow path included in the water purifier, and controlling opening and closing of the valve; And
Detects whether the water purifier leaks by detecting the internal pressure of the water purifier in the vacuum state, and a determination unit for determining whether the operation of the valve by detecting the internal pressure of the water purifier according to the opening and closing of the valve in the vacuum state. Water purifier operation inspection device.
KR1020120087900A 2012-08-10 2012-08-10 Apparatus for inspecting water purifier and method for inspecting water purifier KR20140021401A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170035492A (en) * 2015-09-23 2017-03-31 엘지전자 주식회사 Drinking water supplying device and method for controlling the same
CN110823460A (en) * 2019-11-19 2020-02-21 珠海格力电器股份有限公司 Water purifier system water leakage detection method and device and water purifier system
KR20210112647A (en) 2020-03-05 2021-09-15 주식회사 메타이뮨텍 Compositions for reducing weight comprising Oenothein B analogs as effective component

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20170035492A (en) * 2015-09-23 2017-03-31 엘지전자 주식회사 Drinking water supplying device and method for controlling the same
CN110823460A (en) * 2019-11-19 2020-02-21 珠海格力电器股份有限公司 Water purifier system water leakage detection method and device and water purifier system
KR20210112647A (en) 2020-03-05 2021-09-15 주식회사 메타이뮨텍 Compositions for reducing weight comprising Oenothein B analogs as effective component

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