CN108983829A - A kind of circulation protective device - Google Patents

A kind of circulation protective device Download PDF

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Publication number
CN108983829A
CN108983829A CN201710412472.1A CN201710412472A CN108983829A CN 108983829 A CN108983829 A CN 108983829A CN 201710412472 A CN201710412472 A CN 201710412472A CN 108983829 A CN108983829 A CN 108983829A
Authority
CN
China
Prior art keywords
water
monitor
water inlet
return
inlet
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201710412472.1A
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Chinese (zh)
Inventor
陈杰聪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong union Intelligent Technology Co., Ltd.
Original Assignee
BEIJING JINGHUA YUCHUANG ENERGY-SAVING EQUIPMENT Co Ltd
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 BEIJING JINGHUA YUCHUANG ENERGY-SAVING EQUIPMENT Co Ltd filed Critical BEIJING JINGHUA YUCHUANG ENERGY-SAVING EQUIPMENT Co Ltd
Priority to CN201710412472.1A priority Critical patent/CN108983829A/en
Publication of CN108983829A publication Critical patent/CN108983829A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G05CONTROLLING; REGULATING
    • G05DSYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00Control of flow
    • G05D7/06Control of flow characterised by the use of electric means
    • G05D7/0617Control of flow characterised by the use of electric means specially adapted for fluid materials
    • G05D7/0629Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means
    • G05D7/0635Control of flow characterised by the use of electric means specially adapted for fluid materials characterised by the type of regulator means by action on throttling means

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Measuring Volume Flow (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Pipeline Systems (AREA)

Abstract

The present invention relates to the present invention relates to water system leak proof technology field more particularly to a kind of circulation protective devices.The circulation protective device, including water inlet monitor, return water monitor, controller, the water inlet monitor connect the water inlet of circulation by water inlet pipe, and the return water monitor connects the water outlet of the circulation by return pipe;When the difference for the circling water flow rate that the flow of inlet water and the return water monitor that the water inlet monitor is monitored monitor is less than preset value, the controller control return water monitor closes the return pipe, within a preset time, if the flow of inlet water that the water inlet monitor monitors is greater than default flow of inlet water, then controller controls the water inlet monitor and closes the water inlet pipe, and sounds an alarm.

Description

A kind of circulation protective device
Technical field
The present invention relates to the present invention relates to water system leak proof technology field more particularly to a kind of circulation protection dresses It sets.
Background technique
In daily life or in industrial production, circulating water supply is very universal, such as: floor heating, heating, solar heat water system System, water air-conditioning, air source heat pump hot water system, earth source heat pump water circulation system, industrial cooling water system etc., these confessions Water system, we are known as circulation.But it is leaned on because being not connected firmly when pipe joint installation, uses aging, water pressure for a long time Excessive or pipeline causes leak after by external impacts, at this moment just will appear the leak of large area, if pipeline is embedded in underground, also can To the loss of the causing damage property of house of neighbours downstairs, sizable economic loss will cause.
Existing water-leakage preventing system generally uses humidity sensor to detect that there is spilling water trigger electrode on ground, sounds an alarm or sends out The mode of signal Shuttoff Valve reaches the device of pre- preventing water leakage out.This scheme will select it with biography when initial stage being needed to install Sensor pipeline, this mode product cost is high, and in addition the connector in system can block the connection of sensor, in addition only pipeline Place's leak can just be triggered to sensor, and many circulations are the other equipment having other than pipeline, such as warm gas and water sky Leak this system, which occurs, in the fan coil etc. of tune can't detect.So this scheme is at high cost and it is unable to comprehensive monitoring water The water leakage situation of the circulatory system.
Therefore, how to develop it is a kind of at low cost, and can complete detection circulation water leakage situation scheme, become this Field technical staff technical problem urgently to be resolved.
Summary of the invention
The object of the present invention is to provide a kind of at low cost and energy complete detection circulation water leakage situation circulations Protective device.
To achieve the above object, the present invention provides a kind of circulation protective devices, including water inlet monitor, return water Monitor, controller, the water inlet monitor connect the water inlet of circulation by water inlet pipe, and the return water monitor is logical Cross the water outlet that return pipe connects the circulation;
The difference of the flow of inlet water that the water inlet monitor is monitored and the circling water flow rate that the return water monitor monitors is small When preset value, the controller control return water monitor closes the return pipe, within a preset time, if the water inlet monitors The flow of inlet water that device monitors is greater than default flow of inlet water, then controller controls the water inlet monitor and closes the water inlet pipe, And it sounds an alarm.
Preferably, if the flow of inlet water that the water inlet monitor monitors is less than default flow of inlet water, controller is controlled The return water monitor opens the return pipe.
It preferably, further include control button, the control button is depressed, and the controller control water inlet monitor returns Water monitor opens the water inlet pipe, the return pipe respectively, and releases the alarm.
Preferably, the water inlet monitor or the return water monitor include flow monitor, switch valve, the switch valve It is successively set on water inlet pipe or return pipe with the flow monitor.
Preferably, the flow monitor is ultrasonoscope measuring device.
Preferably, the ultrasonoscope measuring device includes ultrasonoscope measuring device shell, ultrasonic transducer, ultrasonic transducer To penetrating column, the upper end of the ultrasonoscope measuring device shell is opened there are two circular through hole, is packaged with one respectively in each circular through hole Group ultrasonic transducer and ultrasonic transducer are to penetrating column, and the ultrasonic transducer and the ultrasonic transducer are to penetrating column phase Mutually to just.
Preferably, the switch valve includes sequentially connected opening/shutting valve, valve regulated bar and valve actuator, the valve Door actuator receives the control signal of the controller, and opens or closes the opening/shutting valve by the valve regulated bar.
Preferably, the controller carries out alarm by alarm, and the alarm includes loudspeaker horn and/or operation Status lamp.
Preferably, the water inlet monitor or the return water monitor further include supervising for monitoring the temperature of water system water temperature Device is surveyed, when the water temperature of the water system is lower than preset temperature, the controller controls the switch valve and closes, and described in control Alarm sounds an alarm.
Preferably, the water inlet monitor or the return water monitor further include shell, are fixed with circuit on the shell Plate, the controller are mounted on the circuit board.
Circulation protective device provided by the invention is respectively arranged in the inlet and outlet of circulation Water inlet monitor, return water monitor, the flow of inlet water that the water inlet monitor is monitored are monitored with the return water monitor The difference of circling water flow rate when being less than preset value, controller control return water monitor closes the return pipe, when default In, if the flow of inlet water that the water inlet monitor monitors is greater than default flow of inlet water, controller controls the water inlet prison It surveys device and closes the water inlet pipe, and sound an alarm.
This scheme first passes through closing return water when the circling water flow rate for detecting circulation is significantly less than flow of inlet water Whether there is water flow in pipe, detection water inlet monitor, judges whether drainage really occur in circulation with this, into And determine whether to close the water inlet pipe of circulation and outlet pipe and whether sound an alarm, it may make the detection of leak more smart Really, misjudgment phenomenon is avoided the occurrence of, inlet and outlet can be closed with the water leakage situation of complete detection circulation, and The alarm of leak is issued, reminds user to overhaul in time to pipeline, avoids bigger loss;Compared to the prior art, Cost is relatively low.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only one recorded in the present invention A little embodiments are also possible to obtain other drawings based on these drawings for those of ordinary skill in the art.
Fig. 1 is the working principle diagram of circulation provided by the invention;
Fig. 2 is a kind of the schematic diagram of the section structure of specific embodiment of water inlet monitor in Fig. 1;
The schematic view of the front view of water inlet monitor in Fig. 3 Fig. 2;
Fig. 4 is the overlooking structure diagram of water inlet monitor in Fig. 2;
Fig. 5 is the backsight structural representation of water inlet monitor in Fig. 2:
Fig. 6 is a kind of the schematic diagram of the section structure of specific embodiment of return water monitor in Fig. 1;
The schematic view of the front view of return water monitor in Fig. 7 Fig. 6;
Fig. 8 is the overlooking structure diagram of return water monitor in Fig. 6;
Fig. 9 is the backsight structural representation of return water monitor in Fig. 6;
Wherein, in Fig. 1-Fig. 9:
Water inlet interface 1, water inlet monitor 2, water inlet pipe 3, connecting line 4, return water interface 5, return water monitor 6, return pipe 7;
Shell 8, connection water system connector 9, opening/shutting valve 10, valve regulated bar 11, valve actuator 12, circuit board 13, above Plate 14, status lamp light guide plate 15, lower panel 16, shell 17, ultrasonic transducer 18, ultrasonic flowmeter shell 19, loudspeaker Loudspeaker 20, ultrasonic transducer to penetrate column 21, ultrasonic transducer fixation clip 22, temperature sensor 23, operating status lamp 24, Control button 25, flow indication 26, setting status lamp 27, shell 28;
Shell 29, connection water system connector 30, opening/shutting valve 31, valve regulated bar 32, valve actuator 33, circuit board 34, on Panel 35, status lamp light guide plate 36, lower panel 37, shell 38, ultrasonic transducer 39, ultrasonic flowmeter shell 40, ultrasound Wave transducer to penetrate column 41, ultrasonic transducer fixation clip 42, temperature sensor 43, operating status lamp 44, control button 45, Flow indication 46, setting status lamp 47, shell 49.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, below in conjunction with attached drawing to this hair It is bright to be further detailed.
As shown in Figure 1, circulation protective device provided by the invention includes water inlet pipe 3, return pipe 7, water inlet monitoring Device 2, return water monitor 6, controller;Water inlet monitor 2 can be used to monitor the water flow by monitor 2 of intaking, and can Open and close water inlet pipe 3;Return water monitor 6 can be used to monitor water flow by return water monitor 6, and can open and Close return pipe 7;The water inlet monitor 2 connects the water inlet of circulation, the water inlet monitor 2 by water inlet pipe 3 Water inlet interface 1 connected with water supply end pipe road, the return water monitor 6 by return pipe 7 connect the circulation go out The mouth of a river, the return water interface 5 of the return water monitor 6 and the return water interface 5 of circulation connect.
The circling water flow rate that the flow of inlet water and the return water monitor 6 that the water inlet monitor 2 is monitored monitor When difference is less than preset value, the controller control return water monitor 6 closes the return pipe 7, within a preset time, if described The flow of inlet water that water inlet monitor 2 monitors is greater than default flow of inlet water, then controller controls the water inlet monitor 2 and closes institute Water inlet pipe 3 is stated, and is sounded an alarm.
Situations such as those skilled in the art can be according to the specific water consumption of circulation is arbitrarily arranged described default Value, such as 1L, 2L or 5L etc..
This scheme first passes through closing return water when the circling water flow rate for detecting circulation is significantly less than flow of inlet water Whether there is water flow in pipe 7, detection water inlet monitor 2, judge whether drainage really occur in circulation with this, And then determine whether to close the water inlet pipe 3 of circulation and outlet pipe and whether sound an alarm, it may make the detection of leak more Add accurately, avoid the occurrence of misjudgment phenomenon, water inlet and water outlet can be closed with the water leakage situation of complete detection circulation Mouthful, and the alarm of leak is issued, it reminds user to overhaul in time to pipeline, avoids bigger loss;And the prior art It compares, cost is relatively low.
In specific scheme, water inlet monitor 2 can use following scheme, please refer to Fig. 2-5, and Fig. 2 is prison of intaking in Fig. 1 A kind of the schematic diagram of the section structure of specific embodiment of device is surveyed, the schematic view of the front view of water inlet monitor, Fig. 4 are in Fig. 3 Fig. 2 The overlooking structure diagram of water inlet monitor in Fig. 2, Fig. 5 are the backsight structural representation of water inlet monitor in Fig. 2.
As Figure 2-Figure 5, water inlet monitor 2 includes cylindrical case 8, and the both ends of shell 8 are equipped with shell 28, shell 8 with It is tightly connected between shell 28, two end housings 10 are equipped with the connection water system connector 9 for connecting water system pipeline, connect water system System connector 9 can be connected through a screw thread with water system pipeline, and plastic shell can be used in shell 8 and shell 28, and the present invention is to 8 He of shell The material of shell 28 is without limitation.
In preferred scheme, the flow detector is ultrasonoscope measuring device.It is small using ultrasonoscope measuring device crushing, be not easy Blocking, long service life.
In further embodiment, the ultrasonoscope measuring device include ultrasonoscope measuring device shell 19, ultrasonic transducer 18, Copper shell, the upper end of the ultrasonoscope measuring device shell 19 can be used to column 21, ultrasonoscope measuring device shell 19 is penetrated in ultrasonic transducer It opens there are two circular through hole, is packaged with one group of ultrasonic transducer 18 and ultrasonic transducer in each circular through hole respectively to penetrating Column 21, the ultrasonic transducer 18 is aligned with the ultrasonic transducer to column 21 is penetrated, and is sealed against, then with ultrasound The reinforcement of wave transducer fixation clip 22 is fixed.This structure may make water system protective device structure more compact, water flow It is more accurate to measure.
In specific scheme, the switch valve includes that sequentially connected opening/shutting valve 10, valve regulated bar 11 and valve are held Row device 12, the valve actuator 12 receive the control signal of the controller, and opened by the valve regulated bar 11 or Close the opening/shutting valve 10.
In preferred scheme, it can be fixed with circuit board 13 on the inside of 8 upper end of shell, the controller may be mounted at described On circuit board 13, in further embodiment, the upper layer of circuit board 13 can be top panel 14, can be equipped with control on top panel 14 Key 25, flow indication 26 and setting status lamp 27.
The control button 25 is depressed, and the controller controls the switch valve and opens, and releases the alarm.
In specific scheme, top panel 14 and lower panel 16 are sandwiched between an operating status lamp 24, and the middle part of shell 1 is set There is loudspeaker horn 20, realizes optoacoustic warning function respectively.
In preferred scheme, the alarm can be audio alarm or light alarm, and in turn, the alarm includes loudspeaking Device loudspeaker 20 and/or operating status lamp 24.
It further include the temperature sensor 23 for detecting water system water temperature, when the circulation in preferred scheme Water temperature when being lower than preset temperature, the controller controls the switch valve and closes, and controls the alarm and sound an alarm.
In specific scheme, return water monitor 6 can use following scheme, please refer to Fig. 6-9, and Fig. 6 is return water prison in Fig. 1 A kind of the schematic diagram of the section structure of specific embodiment of device is surveyed, the schematic view of the front view of return water monitor, Fig. 8 are in Fig. 7 Fig. 6 The overlooking structure diagram of return water monitor in Fig. 6, Fig. 9 are the backsight structural representation of return water monitor in Fig. 6.
As shown in Fig. 6-Fig. 9, return water monitor 6 includes the shell 29 of tubular, and the both ends of shell 29 are equipped with shell 49, shell It is tightly connected between 29 and shell 49, two end housings 49 are equipped with the connection water system connector 30 for connecting water system pipeline, even Collecting system of water connector 30 can be connected through a screw thread with circulation pipeline, and plastic shell can be used in shell 29 and shell 28, this Invention to the material of shell 29 and shell 49 without limitation.
In preferred scheme, the flow detector is ultrasonoscope measuring device.It is small using ultrasonoscope measuring device crushing, be not easy Blocking, long service life.
In further embodiment, the ultrasonoscope measuring device include ultrasonoscope measuring device shell 40, ultrasonic transducer 39, Copper shell, the upper end of the ultrasonoscope measuring device shell 40 can be used to column 41, ultrasonoscope measuring device shell 40 is penetrated in ultrasonic transducer It opens there are two circular through hole, is packaged with one group of ultrasonic transducer 39 and ultrasonic transducer in each circular through hole respectively to penetrating Column 41, the ultrasonic transducer 39 is aligned with the ultrasonic transducer to column 41 is penetrated, and is sealed against, then with ultrasound The reinforcement of wave transducer fixation clip 42 is fixed.This structure may make water system protective device structure more compact, water flow It is more accurate to measure.
In specific scheme, the switch valve includes that sequentially connected opening/shutting valve 31, valve regulated bar 32 and valve are held Row device 33, the valve actuator 33 receive the control signal of the controller, and opened by the valve regulated bar 32 or Close the opening/shutting valve 31.
In preferred scheme, it can be fixed with circuit board 34 on the inside of 29 upper end of shell, the controller may be mounted at institute It states on circuit board 34, in further embodiment, the upper layer of circuit board 34 can be top panel 35, can be equipped with control on top panel 35 Key 45, flow indication 46 and setting status lamp 47 processed.
The control button 45 is depressed, and the controller controls the switch valve and opens, and releases the alarm.
In specific scheme, top panel 35 and lower panel 37 are sandwiched between an operating status lamp 44, the middle part of shell 29 Equipped with loudspeaker horn, optoacoustic warning function is realized respectively.
In preferred scheme, the alarm can be audio alarm or light alarm, and in turn, the alarm includes loudspeaking Device loudspeaker and/or operating status lamp 44.
It further include the temperature sensor 43 for detecting water system water temperature, when the circulation in preferred scheme Water temperature when being lower than preset temperature, the controller controls the switch valve and closes, and controls the alarm and sound an alarm.
In preferred scheme, the circuit board 13 of water inlet monitor 2 and the circuit board 34 of return water monitor 6 can pass through power supply Signal wire connection is communicated, and water inlet monitor 2 can give back to water monitor 6 by monitor 2 of intaking by cable connection power supply Power supply, on & off switch, control button etc. can be arranged at on water monitor 2, and the switch into water monitor 2 is pressed in booting Key, the flow indications of two monitors show corresponding flow simultaneously, (open when reaching initiation value into backwater end flow and stablizing 1 minute In dynamic value deviation 1%) enter normal monitoring state afterwards.
In a kind of specific embodiment, intakes monitor 2 and return water monitor 6 monitors in water inlet pipe 3 and return pipe 7 respectively Water flow, controller is compared two water flow values, when two water flow value error 1L or more are judged as There are the risks of leak, issue instructions to the controller on circuit board 34 by connecting line 4, order valve actuator 33 drives 32 opening/shutting valve 31 of valve regulated bar is closed 1 minute, and at this moment opening/shutting valve 10 is open state, and ultrasonic transducer 18 is not supervised Flow parameter is measured, controller is judged as that the nominal error of sensor, recovery opening/shutting valve 31 are open state, carries out normal Work.If ultrasonic transducer 18 has monitored that water flows in series through ultrasonic flowmeter shell 19, that is, it is judged as system leak, Issuing instructions to valve actuator 12 by controller drives valve regulated bar 11 to close opening/shutting valve 10, and passes through loudspeaker loudspeaker 20 and operating status lamp 24 issue audible and visible alarm, notify user maintenance system.Until user is manually pressed by 25 control buttons Alarm can be released, normally for work.
It is above that certain exemplary embodiments of the invention are only described by way of explanation, undoubtedly, for ability The those of ordinary skill in domain without departing from the spirit and scope of the present invention can be with a variety of different modes to institute The embodiment of description is modified.Therefore, above-mentioned attached drawing and description are regarded as illustrative in nature, and should not be construed as to the present invention The limitation of claims.

Claims (10)

1. a kind of circulation protective device, which is characterized in that described including the monitor, return water monitor, controller of intaking Monitor of intaking connects the water inlet of circulation by water inlet pipe, and the return water monitor described in return pipe connection by following The water outlet of ring water system;
The difference of the flow of inlet water that the water inlet monitor is monitored and the circling water flow rate that the return water monitor monitors is small When preset value, the controller control return water monitor closes the return pipe, within a preset time, if the water inlet monitors The flow of inlet water that device monitors is greater than default flow of inlet water, then controller controls the water inlet monitor and closes the water inlet pipe, And it sounds an alarm.
2. circulation protective device according to claim 1, which is characterized in that if the water inlet monitor monitors The flow of inlet water arrived is less than default flow of inlet water, and controller then controls the return water monitor and opens the return pipe.
3. circulation protective device according to claim 1, which is characterized in that it further include control button, the control Key processed is depressed, and the controller control water inlet monitor, return water monitor open the water inlet pipe, the return water respectively Pipe, and release the alarm.
4. circulation protective device according to claim 1-3, which is characterized in that the water inlet monitoring Device or the return water monitor include flow monitor, switch valve, and the switch valve and the flow monitor are successively set on On water inlet pipe or return pipe.
5. circulation protective device according to claim 4, which is characterized in that the flow monitor is ultrasonic wave Meter.
6. circulation protective device according to claim 5, which is characterized in that the ultrasonoscope measuring device includes super Sound wave meter shell, ultrasonic transducer, ultrasonic transducer are provided with to column, the upper end of the ultrasonoscope measuring device shell is penetrated Two circular through holes, one group of ultrasonic transducer and ultrasonic transducer are packaged in each circular through hole to penetrating column respectively, institute Ultrasonic transducer is stated to align with the ultrasonic transducer to column is penetrated.
7. circulation protective device according to claim 4, which is characterized in that the switch valve includes being sequentially connected Opening/shutting valve, valve regulated bar and valve actuator, the valve actuator receives the control signal of the controller, and leads to It crosses the valve regulated bar and opens or closes the opening/shutting valve.
8. circulation protective device according to claim 1, which is characterized in that the controller by alarm into Row alarm, the alarm include loudspeaker horn and/or operating status lamp.
9. circulation protective device according to claim 4, which is characterized in that the water inlet monitor or described time Water monitor further includes the temperature monitoring for monitoring water system water temperature, when the water temperature of the water system is lower than preset temperature When, the controller controls the switch valve and closes, and controls the alarm and sound an alarm.
10. circulation protective device according to claim 4, which is characterized in that the water inlet monitor or described Return water monitor further includes shell, and circuit board is fixed on the shell, and the controller is mounted on the circuit board.
CN201710412472.1A 2017-06-05 2017-06-05 A kind of circulation protective device Pending CN108983829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710412472.1A CN108983829A (en) 2017-06-05 2017-06-05 A kind of circulation protective device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710412472.1A CN108983829A (en) 2017-06-05 2017-06-05 A kind of circulation protective device

Publications (1)

Publication Number Publication Date
CN108983829A true CN108983829A (en) 2018-12-11

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710412472.1A Pending CN108983829A (en) 2017-06-05 2017-06-05 A kind of circulation protective device

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109882742A (en) * 2019-03-19 2019-06-14 广东屋联智能科技有限公司 A kind of intelligent water leakage protective device and circulation water conservation system
CN110388566A (en) * 2018-04-18 2019-10-29 赵柯鑫 A kind of circulation protective device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110388566A (en) * 2018-04-18 2019-10-29 赵柯鑫 A kind of circulation protective device
CN109882742A (en) * 2019-03-19 2019-06-14 广东屋联智能科技有限公司 A kind of intelligent water leakage protective device and circulation water conservation system
CN109882742B (en) * 2019-03-19 2023-12-26 屋联智能(山东)集团股份有限公司 Intelligent water leakage protection device and circulating water protection system

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Date Code Title Description
PB01 Publication
PB01 Publication
TA01 Transfer of patent application right
TA01 Transfer of patent application right

Effective date of registration: 20190919

Address after: 528400 Zhongshan, Guangdong Torch Development Zone, 6 Xiang Hao Road, North Korea, 6 trading tower 606 room.

Applicant after: Guangdong union Intelligent Technology Co., Ltd.

Address before: 100112 Beijing city Tongzhou District days Mingyuan building 7, 1603

Applicant before: Beijing JingHua YuChuang Energy-Saving Equipment Co., Ltd.

WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20181211