KR20170050243A - Apparatus for supplying raw water for water purifier - Google Patents

Apparatus for supplying raw water for water purifier Download PDF

Info

Publication number
KR20170050243A
KR20170050243A KR1020150151541A KR20150151541A KR20170050243A KR 20170050243 A KR20170050243 A KR 20170050243A KR 1020150151541 A KR1020150151541 A KR 1020150151541A KR 20150151541 A KR20150151541 A KR 20150151541A KR 20170050243 A KR20170050243 A KR 20170050243A
Authority
KR
South Korea
Prior art keywords
raw water
water tank
tank
wastewater
purifier
Prior art date
Application number
KR1020150151541A
Other languages
Korean (ko)
Inventor
혼다 히토시
김상욱
최준호
김대근
Original Assignee
씨제이케이얼라이언스 주식회사
주식회사 저스트
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 씨제이케이얼라이언스 주식회사, 주식회사 저스트 filed Critical 씨제이케이얼라이언스 주식회사
Priority to KR1020150151541A priority Critical patent/KR20170050243A/en
Priority to JP2016070680A priority patent/JP6009707B1/en
Priority to JP2016189273A priority patent/JP2017080733A/en
Publication of KR20170050243A publication Critical patent/KR20170050243A/en

Links

Images

Classifications

    • 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
    • B01D35/147—Bypass or safety valves
    • 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
    • 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
    • B01D35/157—Flow control valves: Damping or calibrated passages
    • 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
    • B01D35/26—Filters with built-in pumps filters provided with a pump mounted in or on the casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration
    • B01D37/04—Controlling the filtration
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D9/00—Level control, e.g. controlling quantity of material stored in vessel
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B3/00—Audible signalling systems; Audible personal calling systems
    • G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2101/00—Point-like light sources

Abstract

The present invention relates to a refrigerator comprising: a housing having a door capable of opening and closing; A raw water tank installed inside the housing and storing raw water for supplying water to the water purifier; A pump installed in the housing and feeding raw water stored in the raw water tank by a water purifier; And a pressure switch installed in a supply passage connecting the raw water tank and the water purifier and controlling the operation of the pump by opening and closing the switch in accordance with the pressure of water supplied to the water purifier, To a raw water supply device for a water purifier which can be easily used.

Description

TECHNICAL FIELD [0001] The present invention relates to a raw water supply device for a water purifier,

The present invention relates to a raw water supply device for a water purifier which can be easily used even in a place where a raw water supply source is difficult to connect.

The water purifier used in indoor or outdoor is generally connected to the water pipe to supply raw water and purify the raw water to supply purified water to the user.

However, it may be difficult to use a water purifier in places where it is difficult to connect water pipes to water purifiers. In addition, if the water pipe is connected to the water purifier, damage due to pipe leakage may occur.

The water purifier includes a filter for purifying the raw water and a low-capacity receiver for providing the user with the filtered water.

The water purifier generally controls the supply of raw water by operating a raw water shutoff valve based on the water level stored in the low water receptacle. However, as the raw water is supplied to the water purifier due to the opening / closing of the raw water shutoff valve, the pressure of the raw water flowing into the water purifier increases, so that the water purifier parts may be damaged and the water purifier may fail. Also, it may be difficult to control the pressure of the raw water flowing into the water purifier. In order to solve such a problem, a conventional water purifier is provided with a pressure switch for opening and closing the switch according to the pressure of water supplied to the water purifier to control the operation of the pump. Such a conventional water purifier can reduce damage due to pipe leakage, prolong the service life of the water purifier part, and control the pressure of the incoming water.

However, the conventional water purifier described above is still limited in use at places where it is difficult to connect the raw water supply source.

1. Published Japanese Patent Application No. 10-1998-0030379

2. Published patent application No. 10-2011-0128635

SUMMARY OF THE INVENTION It is an object of the present invention to provide a raw water supply device for a water purifier which can be easily used even in a place where a raw water supply source is difficult to connect.

According to an aspect of the present invention, there is provided a portable terminal comprising: a housing having an openable door; A raw water tank installed inside the housing and storing raw water for supplying water to the water purifier; A pump installed in the housing and feeding raw water stored in the raw water tank by a water purifier; And a pressure switch installed in a supply passage connecting the raw water tank and the water purifier and controlling the operation of the pump by opening and closing the switch according to the pressure of water supplied to the water purifier.

Preferably, the raw water tank includes a first raw water tank and a second raw water tank which are vertically stacked, wherein the first raw water tank and the second raw water tank each have a cap which can be opened and closed at an upper end thereof, And the discharge flow path of the first raw water tank is seated on the cap of the second raw water tank so that the first raw water tank and the second raw water tank are communicated with each other.

More preferably, the first raw water tank and the second raw water tank are provided with a shut-off valve for preventing the raw water from flowing out to the discharge passage at the lower end.

In addition, the second raw water tank has a backflow prevention valve for preventing the reverse flow of the raw water in the discharge flow path at the lower end.

Preferably, the first raw water tank and the second raw water tank have a vent hole through which water is smoothly supplied and blocked at one side of the upper portion, and a floating valve is provided in the vent hole.

 The water purifier may further include a wastewater tank installed in the housing for storing wastewater generated after passing through the filter in the water purifier.

The apparatus further includes a wastewater sensor disposed inside the housing for sensing the level of the wastewater tank.

Preferably, the door is installed to slide in the front-rear direction of the housing, a shelf is integrally provided inside the door, and the raw water tank and the wastewater tank are mounted on the shelf.

Further, the present invention may include a raw water tank detection sensor for detecting whether the raw water tank is mounted or not; A raw water sensor for detecting whether or not raw water is present in the raw water tank; a wastewater tank detection sensor for detecting whether the wastewater tank is mounted or closed by contacting the wastewater tank; And a controller for controlling the operation of the pump according to the detection results of the raw water tank sensor, the raw water sensor, and the wastewater tank detection sensor.

Preferably, the apparatus further comprises an LED display unit for displaying information on the presence or absence of the raw water tank, the presence of raw water in the raw water tank, the presence or absence of the wastewater tank, the level of the wastewater tank, and the operating state of the pump .

The raw water supply device for a water purifier according to the present invention can supply raw water to a water purifier smoothly even in an environment where it is difficult to connect with a raw water supply source by using two raw water tanks which are stackably mounted.

1 is a schematic view showing a raw water supply device for a purifier according to the present invention,
2 is a perspective view illustrating a raw water supply device for a water purifier according to the present invention,
Fig. 3 is a front view of Fig. 2,
FIG. 4 is a cross-sectional view taken along line AA of FIG. 3,
FIG. 5 is a perspective view showing a raw water supply device for a water purifier according to the present invention,
Fig. 6 is a side view of Fig. 5,
7 is a cross-sectional view taken along the line AA of Fig.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of a raw water supply device for a water purifier according to the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, it is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the technical scope of the present invention. Will be.

1, a raw water supply device 100 for purifying water according to the present invention is a device for supplying raw water stored in a raw water tank 110 to a water purifier 200 and includes a raw water tank 110, a pump 120, A pressure switch 130, an adapter 140, and a pressure tank 150.

The raw water tank 110 is a container in which raw water to be supplied to the water purifier 200 is stored and is composed of a first raw water tank 110A and a second raw water tank 110B and supplies the raw water stored therein to the pump 120 side do.

The pump 120 feeds the raw water to the water purifier 200 by feeding the raw water from the raw water tank 110.

The pressure switch 130 controls the operation of the pump 120 by opening and closing the switch according to the pressure of water supplied to the water purifier 200. Here, the pressure switch 130 can stop the operation of the pump 120 by opening the switch when the pressure of the water supplied to the water purifier 200 is equal to or higher than the predetermined pressure, and when the pressure is lower than the predetermined pressure, The pump 120 can be operated. For example, the predetermined pressure may be about 0.5 kg / cm 2 to about 6.0 kg / cm 2 , and when in this range, the raw water can be supplied to the water purifier 200 smoothly at a more appropriate water pressure.

The adapter 140 converts the voltage input to the pump 120 to a rated voltage. For example, in order to operate the raw water supply device 100, when the plug of the raw water supply device 100 is connected to an outlet to which an AC voltage of 100 V to 250 V is supplied, the adapter 140 supplies an AC voltage to the pump 120, Can be converted to a DC voltage of 24V.

The pressure tank 150 temporarily stores the raw water pumped from the pump 120. The pressure tank 150 temporarily stores raw water pumped from the pump 120 before passing through the pressure switch 130, thereby reducing pulsation by the pump 120. In addition, the pressure tank 150 reduces the noise generated by repeated starting and stopping operations of the pressure switch 130 and the pump 120, minimizes the operation of the pressure switch 130 and the pump 120 due to the ripple phenomenon, It is possible to increase the service life of the components of the apparatus 100.

5 to 7, the raw water tank 110 includes a first raw water tank 110A and a second raw water tank 110B which are stacked one above the other. The first raw water tank 110A has a cap 111 that can be opened and closed at an upper end, and a discharge passage 112 at the lower end. The second raw water tank 110B has an inflow passage 113 at the upper end and a discharge passage 112 at the lower end. When the first raw water tank 110A and the second raw water tank 110B are stacked, the discharge flow path 112 of the first raw water tank 110A is connected to the inflow path 113 of the second raw water tank 110B So that the first raw water tank 110A and the second raw water tank 110B communicate with each other.

The two raw water tanks 110A and 110B can be used as a raw water supply source by the structure of the raw water tank 110. When the raw water in the first raw water tank 110A is exhausted, Only the first raw water tank 110A can be drawn out from the housing 101 to fill the raw water.

On the other hand, the first raw water tank 110A and the second raw water tank 110B are provided with a handle 114 rotatably installed on the upper side. The raw water tank 110 and the handle 114 are formed in a hexahedral shape when the handle 114 is rotated and brought into close contact with the raw water tank 110. That is, the handle 114 is configured not to interfere with the raw water tank 110 and other components.

Referring to FIGS. 4 and 7, the first raw water tank 110A and the second raw water tank 110B have shutoff valves 115, respectively. The shutoff valve 115 is installed at an upper portion of the discharge flow path 112 provided at the lower end of the first raw water tank 110A and the second raw water tank 110B. When the raw water is contained in the raw water tank 110, the shutoff valve 115 moves downward by the pressure of the raw water and the force of the spring to close the discharge flow path 112.

In addition, the second raw water tank 110B is provided with the check valve 116. The check valve 116 is installed under the discharge passage 112 provided at the lower end of the second raw water tank 110B. That is, the check valve 116 is installed below the shutoff valve 115 provided in the second raw water tank 110B. The check valve 116 prevents the raw water discharged from the first raw water tank 110A to the pump 120 side from flowing back into the first raw water tank 110A.

Referring to FIG. 7, the first raw water tank 110A and the second raw water tank 110B have a vent hole 117 through which water is smoothly supplied and blocked. This vent hole 117 is formed on one side of the upper side of the raw water tank 110, exactly on one side of the cap 111. A floating valve 118 is provided in the vent hole 117. The floating valve 118 floats by the raw water inside the raw water tank 110 and opens or cuts the vent hole 117 according to the water level of the raw water.

By this vent hole 117 and the floating valve 118, raw water supply and shutoff from the first raw water tank 110A to the second raw water tank 110B can be smoothly performed.

4 to 7, the raw water supply device for a water purifier according to the present invention further includes a wastewater tank 160 installed inside the housing 101. The wastewater tank 160 is installed adjacent to the raw water tank 110 and serves to store wastewater generated after passing through a filter, for example, a reverse osmosis filter, in the water purifier 200. Like the raw water tank 110, the waste water tank 160 is provided with a cap 161 that can be opened and closed at an upper end thereof and a shutoff valve 162 and a check valve 163 at the lower end thereof. The wastewater tank 160 also has a knob 164 having the same structure as the knob 114 of the raw water tank 110.

A waste water level sensor 171 for detecting the water level inside the waste water tank 160 is installed on the inner wall of the housing 101. The wastewater detection sensor 171 may be an infrared sensor that emits infrared rays toward the wastewater tank 160 side. According to the detection result of the waste water level sensor 171, it is possible to know when the waste water tank 160 should be emptied.

5 and 6, the door 102 installed on the housing 101 is configured to slide in the front-rear direction within the housing 101. To this end, the door 102 has a sliding rack 103 guided horizontally along the inner side wall of the housing 101, and a wheel 104 is provided at a front lower side of the sliding rack 103. A shelf 105 is integrally provided on the upper part of the sliding rack 103 on the inner side of the door 102. The raw water tank 110 and the wastewater tank 160 described above are mounted on the shelf 105 and are drawn out of the housing 101 when the door 102 is opened.

The opening structure of the door 102 of the housing 101 allows the user to easily mount and withdraw the raw water tank 110 and the wastewater tank 160.

4 and 7, the raw water supply device 100 for a purifier according to the present invention includes a raw water tank detection sensor 172 for detecting whether the raw water tank 110 is mounted, A wastewater tank sensor 174 for detecting whether the wastewater tank 160 is installed or not, and a door sensor for detecting whether the door 102 is opened or closed.

The raw water tank detection sensor 172 is provided on the inner wall on the front side of the housing 101 so that when the raw water tank 110 is mounted on the shelf 105 it contacts the raw water tank 110, It detects whether or not it is mounted. The raw water detection sensor 173 is installed on the discharge passage 112 provided in the lower part of the second raw water tank 110B and detects the presence of raw water passing through the discharge passage 112. [ The wastewater tank detection sensor 174 is installed on the inner wall of the rear side of the housing 101 and contacts the wastewater tank 160 to detect whether the wastewater tank 160 is mounted. Meanwhile, the door detection sensor may be provided in the housing 101 as a separate sensor, but in the present invention, it may serve as a door detection sensor through the wastewater tank detection sensor 174. For example, the wastewater tank detection sensor 174 may determine that the door 102 has been closed when in contact with the wastewater tank 160. That is, the wastewater tank detection sensor 174 can sense whether the wastewater tank 160 is mounted or not and whether the wastewater tank 160 is in contact with the wastewater tank 160.

The raw water supply device for a purifier according to the present invention controls the operation of the pump 120 according to the detection results of the raw water tank sensor 172, the raw water sensor 173, and the wastewater tank sensor 174 And a control unit (not shown).

2, 5 and 6, the raw water supply device 100 for a water purifier according to the present invention includes the raw water tank detection sensor 172, the raw water detection sensor 173, the wastewater detection sensor 171 And an LED display unit 180 for displaying a current state according to the detection result of the wastewater tank detection sensor 174. That is, the LED display unit 180 displays the presence or absence of the raw water tank 110, the presence of raw water in the raw water tank 110, the water level of the wastewater tank 160, the presence or absence of the wastewater tank 160, Information on the operating state and the like can be displayed.

The embodiments of the present invention described above are merely illustrative of the technical idea of the present invention, and the scope of protection of the present invention should be interpreted according to the claims. 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 and scope of the invention as defined by the appended claims. It should be interpreted that it is included in the scope of right.

100: raw water supply device 101: housing
102: Door 103: Sliding rack
104: wheel 105: shelf
110: raw water tank 110A: first raw water tank
110B: second raw water tank 111: cap
112: exhaust passage 113:
114: handle 115: shutoff valve
116: backflow prevention valve 117: ventilation hole
118: Floating valve 120: Pump
130: Pressure switch 140: Adapter
150: pressure tank 160: wastewater tank
161: cap 162: shutoff valve
163: Reverse flow prevention valve 164: Handle
171: waste water level sensor 172: raw water tank detection sensor
173: raw water detection sensor 174: wastewater tank detection sensor
180: LED indicator

Claims (10)

A housing having an openable door;
A raw water tank installed inside the housing and storing raw water for supplying water to the water purifier;
A pump installed in the housing and feeding raw water stored in the raw water tank by a water purifier; And
And a pressure switch installed in a supply passage connecting the raw water tank and the water purifier and controlling the operation of the pump by opening and closing the switch according to the pressure of water supplied to the water purifier.
The method according to claim 1,
Wherein the raw water tank includes a first raw water tank and a second raw water tank which are vertically stacked, wherein the first raw water tank has a cap which can be opened and closed at an upper end thereof, And the discharge flow path of the first raw water tank is connected to the inflow path of the second raw water tank so that the first raw water tank and the second raw water tank are communicated with each other Water supply device for water purifier.
3. The method of claim 2,
Wherein the first raw water tank and the second raw water tank are provided with a shutoff valve for preventing the flow of raw water to the discharge flow path at the lower end.
3. The method of claim 2,
Wherein the second raw water tank has a check valve for preventing reverse flow of the raw water to the discharge passage at the lower end.
3. The method of claim 2,
Wherein the first raw water tank and the second raw water tank have a vent hole through which water is smoothly supplied and blocked at one side of the upper portion, and a floating valve is provided in the vent hole.
The method according to claim 1,
Further comprising a wastewater tank installed inside the housing for storing wastewater generated after passing through the filter in the water purifier.
The method according to claim 6,
Further comprising a wastewater sensor installed inside the housing for detecting the level of the wastewater tank.
The method according to claim 6,
Wherein the door is installed to be slidable in the front and rear direction of the housing, a shelf is integrally provided inside the door, and the raw water tank and the wastewater tank are mounted on the shelf.
8. The method of claim 7,
A raw water tank sensor for detecting whether the raw water tank is mounted;
A raw water detection sensor for detecting the presence of raw water in the raw water tank
A wastewater tank detection sensor for sensing whether the wastewater tank is mounted or not and whether the door is closed through contact with the wastewater tank; And
Further comprising a controller for controlling the operation of the pump according to a result of the detection of the raw water tank sensor, the raw water sensor, and the wastewater tank sensor.
10. The method of claim 9,
Further comprising an LED display unit for displaying information on the presence or absence of the raw water tank, the presence of raw water in the raw water tank, the presence or absence of the wastewater tank, the level of the wastewater tank, and the operating state of the pump Raw water supply device.
KR1020150151541A 2015-10-30 2015-10-30 Apparatus for supplying raw water for water purifier KR20170050243A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
KR1020150151541A KR20170050243A (en) 2015-10-30 2015-10-30 Apparatus for supplying raw water for water purifier
JP2016070680A JP6009707B1 (en) 2015-10-30 2016-03-31 Raw water supply device for water purifier
JP2016189273A JP2017080733A (en) 2015-10-30 2016-09-28 Raw water feeding device for water purifier

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150151541A KR20170050243A (en) 2015-10-30 2015-10-30 Apparatus for supplying raw water for water purifier

Publications (1)

Publication Number Publication Date
KR20170050243A true KR20170050243A (en) 2017-05-11

Family

ID=57140197

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150151541A KR20170050243A (en) 2015-10-30 2015-10-30 Apparatus for supplying raw water for water purifier

Country Status (2)

Country Link
JP (2) JP6009707B1 (en)
KR (1) KR20170050243A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108585267B (en) * 2018-04-28 2023-09-12 贵州雅洁源环保科技有限公司 Intelligent water purifier for protecting original water tank from water shortage
CN110228655A (en) * 2019-07-17 2019-09-13 莱克电气绿能科技(苏州)有限公司 A kind of water tank and the water purifier with the water tank

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR950000378B1 (en) * 1992-09-18 1995-01-16 김오년 Producing method of polypropylene super fine filament
JP3017368B2 (en) * 1992-10-20 2000-03-06 株式会社ノリタケカンパニーリミテド Graphite paste and method for manufacturing fluorescent display tube using the same
JPH09174053A (en) * 1995-12-26 1997-07-08 Kenji Nose Purified water supply apparatus
JP2004230358A (en) * 2003-02-03 2004-08-19 Toray Ind Inc Desk top type water purifier

Also Published As

Publication number Publication date
JP6009707B1 (en) 2016-10-19
JP2017080729A (en) 2017-05-18
JP2017080733A (en) 2017-05-18

Similar Documents

Publication Publication Date Title
US20070045159A1 (en) Water purifying system with removable storage tank
US10544985B2 (en) Refrigerator and method of controlling the same
US20140182705A1 (en) Condensate management system and methods
EP1369629B1 (en) Easy-to-install, mechanically-operated automatic/manual device for controlling an outlet for water or any fluid
KR20170050243A (en) Apparatus for supplying raw water for water purifier
EP2058442A2 (en) Water flow control apparatus
US20110220227A1 (en) Auxiliary tank and mains water supply system
GB2433492A (en) Tank-refilling pump arrangements
US20090288999A1 (en) Water level control device for reverse osmosis water purifying system
US7878372B1 (en) Automatic water cooler replenishing system
KR101202013B1 (en) Drip stop device structure for counter top type water purifier and mehtod thereof
JP2008272693A (en) Water purifier
AU2017217369A1 (en) Trap for pump testing and monitoring systems
US20070144952A1 (en) Water purifying system
US20060124861A1 (en) System for supply of liquid
CN211688310U (en) Water purification tank combination and water purification system
JP2017504481A (en) System and method for water filtration
JP2015031273A (en) Pump unit
KR101987470B1 (en) water purifier
KR101334201B1 (en) Water purifier for water container
TW200517333A (en) Liquid supply cutoff valve and liquid supply cutoff device incorporating the same
CN203224273U (en) Automatic judgment device during cutting off of water supply
US20040161341A1 (en) Drinking water pumping system
CN212641604U (en) Industrial secondary water supply control assembly and industrial secondary water supply control system
KR20120076945A (en) Contactless faucet

Legal Events

Date Code Title Description
E902 Notification of reason for refusal
E601 Decision to refuse application