CN102734543A - Water leakage prevention valve - Google Patents
Water leakage prevention valve Download PDFInfo
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- CN102734543A CN102734543A CN2012102120687A CN201210212068A CN102734543A CN 102734543 A CN102734543 A CN 102734543A CN 2012102120687 A CN2012102120687 A CN 2012102120687A CN 201210212068 A CN201210212068 A CN 201210212068A CN 102734543 A CN102734543 A CN 102734543A
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Abstract
The invention relates to a water leakage prevention valve capable of preventing a water using appliance from being damaged by water hammers and water from continuously leaking. A valve body (1) is provided with a water inlet (105), a water inlet chamber (101) and a water outlet chamber (102). A three-way bonnet (3) is connected onto the valve body. An elastic diaphragm (2) which can be expanded and lifted up and can be depressed down is arranged on a valve seat between the water inlet chamber and the water outlet chamber of the valve body in a matched way. A side through hole (201) is arranged in the diaphragm. The valve body is provided with a middle water outlet (106). One end of the bonnet is an open end. The open end is matched with the valve body. The diaphragm is arranged at a position where the open end is matched with the valve body to form a backpressure chamber (103) between the diaphragm and the bonnet. The second end of the bonnet is provided with a water outlet (302). The other end of the bonnet is provided with a middle water inlet (303). A three-way through chamber (304) is arranged in the bonnet. A one-way valve is arranged at the middle water inlet of the bonnet and is usable in one way from the middle water inlet to the water outlet. The water leakage prevention valve can be used as a water inlet valve for the water using appliance.
Description
Technical field
The invention belongs to a kind of valve, particularly can prevent the valve that water appliances such as water purifier, water heater suffer water attack to destroy and continue to leak.
Background technique
General direct connection tap water pipe network when water appliances such as the water purifier of manufacturer's product, water heater are installed and used at present, though the common configuration inlet valve, but this valve generally is in normally open.The pressure of tap water pipe network is applied directly to each parts of water appliance internal flow path.Being connected online equipment of running water pipe and utensil has a lot; Big and equipment can make the tap water pipe network variation in pressure occur when opening fast or closing water-flowing path when certain equipment, particularly water-flowing amount; In pipe network, produce pressure surge; Shock wave is propagated in pipe network so that is caused resonance, sends the sound of " thumping is prominent ", water attack that Here it is (also claiming water hammer) phenomenon.Great changes will take place for the pipe network internal pressure when producing water attack, and pressure can reach several times even ten times more than of tap water pipe network normal pressure when increasing.Therefore water attack has very holocaust power to tap water pipe network and institute's attached device.
Be connected water appliances such as the online water purifier of running water pipe, water heater,, leak like utensil etc. because direct and ductwork pressure perforation when water attack takes place, is easy to be damaged.Even water attack do not occur, these water appliances situation of leaking also can take place.Because these utensils directly are connected with the tap water pipe network, the inlet valve that is disposed is also located normal ON state, when water appliance leaks; Water in the pipe network can spill from water appliance continuously; If untimely processing just produces and leaks in a large number, cause waste, and cause flood.
The Chinese utility model patent of notification number CN200978989Y, CN201746344U; And the flat disclosed no pressure-bearing type water tap of 3-154684 of Japan; Be in water inlet place of water appliances such as water purifier (water purifior), water heater and the valve that manual spool opens and closes is set between the water source from the beginning; Thereby realize when spool is closed the purpose that the pressure of tap water and water appliance are isolated.But be to use this protected-type; Water appliance (water purifier, water heater etc.) is installed if the time user general water tap has been installed; The user just needs to change water tap so; And the pipeline between water appliance and the tap connects than general water tap and manys two tubes, exists to install inconveniently, and cost is than higher shortcoming.
Japan is clear to provide a kind of switch valve that need not be automatically controlled with the protection water appliance with 54-102726; When being protected water appliance when user's water is worked, this valve can be opened automatically, the water route circulation; When by the protection water appliance the user not during water, this valve can be closed automatically, thereby makes the variation in water pressure of being isolated water supply network by the protection water appliance prevent water attack destruction.If but being leaked by the protection water appliance, this valve still can be opened because of the release of waterexit end pressure, is protected the not blocking-up of water appliance and running water pipe Netcom water, and leaking can be constant, can not stop water appliance to continue to leak.
The device that China utility model patent ZL200620057712.8 is provided adopts to leak and detects and cooperate electromagnetic valve can solve the problem that continues to leak; But need the outside power supply that is equipped with, comprise the configuration power interface, detection and control section need special detection part; Need a container to be used to place water appliance; Thereby needing increases no small cost, and has increased duty cycle in installing and using, and also is inconvenient to use.
Summary of the invention
The present invention will solve water appliances such as water purifier, water heater and suffer fragile and these water appliances of water attack Shi Buhui that leaks to stop the problem that continues to leak automatically, and a kind of protecting valve that leaks of the present invention is provided for this reason.Valve of the present invention; No electric controling part; It is installed on the water appliances such as water purifier, water heater, as long as terminal flowing water Valve (such as ordinary faucet) is closed, valve of the present invention will be closed automatically; Water appliance and running water pipe Netcom water resistance is disconnected, effectively prevent the effect of water hammer water appliance that other equipment cause in the tap water pipe network.And when water appliance leaked, because disconnected with running water pipe Netcom water resistance, water appliance just can not connect pipe network to be continued to leak.
For addressing the above problem, the technological scheme that the present invention adopts is to be provided with valve body, and valve body has water intake, water-inlet cavity and water chamber; Its special way is the valve gap that is connected with three-way type on the valve body, but is combined with the elastic diaphragm that cripling lifts and stays on the water-inlet cavity of valve body and the valve seat between the water chamber, has side through hole on the barrier film; Valve body has middle water outlet, and valve gap one end is an opening end, and this opening end cooperates with said valve body; Said barrier film is arranged at this opening end and valve body cooperation place, so that forms back pressure cavity at barrier film and valve cover chamber, and the valve gap the other end has water outlet; The another end of valve gap has middle water intake; Have the three-way type lumen in the valve gap, the middle water inlet of valve gap is provided with one-way cock, and this one-way cock is unidirectional open-minded to water outlet from middle water intake.
Described one-way cock can be on valve seat, to be combined with the flap that the front portion is nested with O type circle, is combined with spring on the flap.
Can be provided with diaphragm plate in said diaphragms, have the convexity of penetration hole in the middle of diaphragm plate is provided with, this convexity embedding string is in the said side opening of barrier film.And can on described diaphragm plate, be provided with secondary spring.
Preferably said valve gap opening end has flange, and said barrier film is arranged at this opening end and valve body cooperation place and is meant that the flange of said valve gap opening end pressing the outer fringe seal of barrier film to cooperate.
Valve of the present invention is connected with protecting water appliance.When being opened (during user's water) by protection water appliance terminal flowing water Valve (such as water tap); Pressure in the back pressure cavity of the present invention discharges because of the terminal valve opening, and just greater than the pressure of back pressure cavity, barrier film upwards lifts the pressure of water-inlet cavity; Valve seat is open-minded; Tap water just gets into by the protection water appliance through middle water outlet, because by the hydraulic pressure of the hydraulic pressure in the protection water appliance greater than the terminal valve outlet, shape is opened at the one-way cock place among the present invention; Just flowed out from middle water intake of the present invention by the water in the protection water appliance, valve flows out from the terminal through water outlet again.When the valve closing of terminal; Tap water gets into back pressure cavity through the side through hole (or penetration hole of diaphragm plate) on the water-inlet cavity, barrier film, and the back pressure cavity internal pressure rises, until greater than the pressure of water chamber the time; The barrier film closed valve seat that is depressed, the path of blocking-up water-inlet cavity and water chamber.Be provided with the present invention of diaphragm plate and secondary spring, at secondary spring effect lower diaphragm plate throttle down more successfully.
During the terminal valve closing, other equipment cause the pressure wave of water attack to be blocked in the barrier film auto-closing valve seat among the present invention, tap water pipe network, thereby prevent that water attack from destroying water appliance.
The present invention is connected in the tap water pipe network with water appliance.When other contiguous equipment were opened a sluice gate and drawn out some water on the pipe network, the pressure in the water appliance that the present invention connected can be discharged into the tap water pipe network through the side through hole on middle water intake, back pressure cavity and the elastic diaphragm successively, and water appliance and ductwork pressure are matched.When other contiguous on pipe network watering equipments close valve; Ductwork pressure rises, and pressure is passed to back pressure cavity through the side through hole of elastic diaphragm, and the one-way cock among the present invention is just closed; Pressure by in the protection water appliance can not increase, and guarantees that water appliance does not receive affected by high.
As described above, when the valve closing of terminal, the barrier film among the present invention can be blocked the path of water-inlet cavity and water chamber, stops tap water to get into water appliance.If water appliance leaks; Because the hydraulic pressure in this water appliance is less than the hydraulic pressure of water outlet in the middle of of the present invention and water outlet; One-way cock among the present invention is closed; The tap water that stops is back to water appliance, guarantees that the back pressure cavity internal pressure can not discharge through leaking of water appliance, thereby keeps the closed valve seat of barrier film to stop tap water to get into this state of water appliance; Under the situation that leaking appears in assurance water appliance (like water purifier, water heater etc.), more than phenomenon of leaking can not appear continuing yet.
Description of drawings
Fig. 1 is the leak stereogram of protecting valve of the present invention;
Fig. 2 is the structural representation of one embodiment of the invention;
Fig. 3 is the structural representation of another embodiment of the present invention;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is that the present invention is connected schematic representation with water appliance;
Fig. 6 is a kind of one-way cock structural representation among the present invention;
Fig. 7 is barrier film and the diaphragm plate composite unit structure schematic representation among the present invention;
Fig. 8 is that the present invention is connected another schematic representation with water appliance;
Fig. 9 is that common valve is connected schematic representation with water appliance;
Figure 10 is in abutting connection with valve closing tap water pipe network variation in pressure schematic representation when opening;
Figure 11 adopts water appliance of the present invention water appliance internal pressure when outside water attack occurring to change schematic representation;
Figure 12 adopts water appliance water appliance internal pressure when outside water attack occurring of common valve to change schematic representation.
Be labeled as among the figure: 1 valve body, 101 water-inlet cavitys, 102 water chambers, 103 back pressure cavity, 105 water intakes, 106 middle water outlets; 2 barrier films, 201 side through hole, 202 outer rims, 3 valve gaps, 301 flanges, 302 water outlets; Water intake in the middle of 303,304 three-way type lumen, 5 one-way cocks, 501 valve seats, 502 springs, 503 flaps; 504 O type circles, 6 secondary springs, 7 diaphragm plates, 701 convexities, 702 penetration holes, 8 terminal valves; 9 in abutting connection with valve, 10 common valves, and the indication of P1 tap water pipe network hydraulic pressure, P2 is protected hydraulic pressure indication in the water appliance, and P2' is not by hydraulic pressure indication in the protection water appliance.
Embodiment
Embodiment one
The protecting valve that leaks of present embodiment; Like Fig. 1, Fig. 2, shown in Figure 5, have valve body 1, valve body 1 has water intake 105 that is connected with the tap water pipe network and the middle water outlet 106 that is connected with water appliance; Have water-inlet cavity 101 and water chamber 102 in the valve body; But the valve seat corresponding part between water-inlet cavity and the water chamber has cripling and the elastic diaphragm of being processed by rubber material 2 that stays, and barrier film has side through hole 201, and barrier film can be circular, ellipse or cabinet shape; Be connected with the valve gap 3 of three-way type on the valve body, valve gap one end opening portion has flange 301, and the valve gap the other end has water outlet 302, and the another end of valve gap has the middle water intake 303 that is connected with water appliance, has three-way type lumen 304 in the valve gap; The flange 301 of valve gap is pressing barrier film outer rim 202 to be sealed and matched; Form back pressure cavity 103 at barrier film and valve cover chamber; Valve gap and valve body can be realized the sealing of back pressure cavity through screw; Back pressure cavity 103 connects through side through hole 201 and water-inlet cavity 101, and back pressure cavity 103 connects through three-way type lumen 304 and water outlet 302; Middle water outlet 303 places of valve gap are provided with one-way cock, and one-way cock is unidirectional open-minded to water outlet 302 from middle water intake 303.
When the present invention used, water intake 105 connected the tap water pipe network, and middle water outlet 106 connects the water intake of water appliance, and middle water intake 303 connects the water outlet of (handling the back water outlet) water appliance, and water outlet 302 of the present invention is through taking over connecting terminal valve 8.
When terminal valve 8 (such as water tap) was opened, because the pressure in the back pressure cavity 103 is discharged by the terminal valve, the pressure in the back pressure cavity 103 was less than the pressure of water-inlet cavity 101, and barrier film 2 is lifted off a seat and lifted, and tap water gets into water appliance.During terminal valve opening water, one-way cock 5 unidirectional opening are handled back water (purifications, heating etc.) valve outflow from the terminal.
When terminal valve 8 is closed; Tap water gets into back pressure cavity 103 through the side through hole 201 of water-inlet cavity 101 and barrier film 2, and back pressure cavity 103 connects with the tap water pipe network, and the back pressure cavity internal pressure rises to pipe network isobaric; This pressure is greater than the pressure of water chamber 102; Barrier film 2 tops are to valve seat, and the path of blocking-up water-inlet cavity 101 and water chamber 102 stops to supply water to water appliance.If leakage accident appears in water appliance; Because the hydraulic pressure in the water appliance is less than the hydraulic pressure in back pressure cavity 103 of the present invention and the three-way type lumen, the one-way cock at middle water outlet place is in unidirectional closed condition, stops tap water to be back to water appliance; And guarantee that the pressure in the back pressure cavity 103 can not be released; Thereby guarantee barrier film 2 closed valve seats, keep water appliance water inlet blocking state, guarantee that more than phenomenon of leaking appears continuing in the water appliance Shi Buhui that leaks.
Invention also has the protection water appliance and prevents the effect that water attack is decreased.
Applicant adopts and does not adopt when of the present invention water appliance, in abutting connection with the closing and open experimental measurement has been made in the influence of the hydraulic pressure in tap water pipe network and the water appliance of valve, and test and measurement result such as Fig. 8, Fig. 9, Figure 10, Figure 11 and shown in Figure 12.
Fig. 8 representes that valve of the present invention is connected in water appliance.Be connected in the tap water pipe network in abutting connection with valve 9; Adjacent with valve among the present invention and the water appliance that is connected thereof, tap water pipe network hydraulic pressure indication P1 (setting pressure table), protect in the water appliance hydraulic pressure indication P2 to indicate the tap water pipe network respectively and by the interior hydraulic pressure of protection water appliance.
Fig. 9 representes that common valve 10 is connected in water appliance.P1 is identical with the above in abutting connection with valve 9, the indication of tap water pipe network hydraulic pressure, is not protected the hydraulic pressure in the water appliance by hydraulic pressure indication P2' indication in the protection water appliance.
Among Figure 10, Figure 11, Figure 12, t0 to t1 representes that t1 to t2 representes that in abutting connection with the valve opening time section, t2 to t3 represented in abutting connection with the valve closing time period in abutting connection with 9 shut-in time of valve section.
As can beappreciated from fig. 10, turn to when closing in abutting connection with valve 9 from unlatching, the tap water pipe network produces a pressure crest, and this pressure wave meaning shows that water hammer produces.Can see that from Figure 11 when turning to unlatching in abutting connection with valve from closing, the hydraulic pressure of using in the water appliance of the present invention descends, and is protected the internal pressure of water appliance to be released a part; Turn to when closing in abutting connection with valve from unlatching, though a pressure crest appears in tap water pipe network hydraulic pressure indication P1, produced water attack, can't be risen by hydraulic pressure indication P2 in the protection water appliance this moment, maintains the level of lower pressure, makes utensil receive protection.If water appliance does not adopt valve of the present invention and adopts common valve, similar test result is shown in figure 12: when turning to unlatching in abutting connection with valve from closing, the hydraulic pressure P2' in the water appliance has decline, and the internal pressure of water appliance is released a part; Turn in abutting connection with valve from unlatching that the tap water pipe network has produced water attack (Figure 10 shows) when closing; A crest do not occurred by hydraulic pressure indication P2' in the protection water appliance this moment; The impact that is under pressure, after the water attack, the water appliance pressure inside returns to the level that equates with the tap water pipe network.
Embodiment two
This example protecting valve that leaks, like Fig. 3, Fig. 5, shown in Figure 6, middle water outlet 303 places of valve gap are provided with one-way cock 5, and the valve seat 501 of this one-way cock is combined with the flap 503 that the front portion is nested with O type circle 504, is combined with spring 503 on the flap.Other structure is identical with embodiment's one.
During terminal valve opening water, unidirectional valve 5 is opened under water pressure pushing, and valve flows out the water in the water appliance from the terminal at last with water outlet 302 through middle water outlet 303.
During the terminal valve closing, by being pressed on valve seat 501, one-way cock is closed at spring 502 effect lower Discs 503, prevents that back pressure cavity 103 and the same water of three-way type lumen are back to water appliance.
The structure of one-way cock also can be selected other structural types according to actual use condition, such as ball valve etc.
Embodiment three
This example protecting valve that leaks; Like Fig. 3, shown in Figure 7, on barrier film 2, be provided with diaphragm plate 7, diaphragm plate is provided with protruding 701 embedding strings in the side opening 201 of barrier film; Convexity has penetration hole 702; Be provided with secondary spring 6 above the diaphragm plate, diaphragm plate is formed such as the shaping plastic production by rigid material, can move with barrier film is upper and lower.Other structure is identical with embodiment's one.
Diaphragm plate be not limited to the nested method of described convexity being connected of barrier film, also can adopt other fitting methods.
During the terminal valve closing,, by secondary spring 6 effects, can guarantee the more reliable closed valve seat of barrier film 6, the blocking-up water inlet even under the lower situation of tap water intake pressure.
Claims (5)
1. protecting valve that leaks, valve body (1) has water intake (105), water-inlet cavity (101) and water chamber (102), it is characterized in that being connected with on the valve body valve gap (3) of three-way type; But be combined with the elastic diaphragm (2) that cripling lifts and stays on the water-inlet cavity of valve body and the valve seat between the water chamber, have side through hole (201) on the barrier film, valve body has middle water outlet (106); Valve gap one end is an opening end; This opening end cooperates with said valve body, and said barrier film is arranged at this opening end and valve body cooperation place, so that forms back pressure cavity (103) at barrier film and valve cover chamber; The valve gap the other end has water outlet (302), and the another end of valve gap has middle water intake (303), has three-way type lumen (304) in the valve gap; The middle water intake (303) of valve gap locates to be provided with one-way cock, and this one-way cock is unidirectional open-minded to water outlet (302) from middle water intake (303).
2. the protecting valve that leaks as claimed in claim 1 is characterized in that being combined with the flap (503) that the front portion is nested with O type circle (504) on the valve seat (501) of described one-way cock (5), is combined with spring (503) on the flap.
3. the protecting valve that leaks as claimed in claim 1 is characterized in that being provided with above the said barrier film (2) diaphragm plate (7), has the convexity (701) of penetration hole (702) in the middle of diaphragm plate is provided with, and this convexity embedding string is in the said side opening (201) of barrier film.
4. the protecting valve that leaks as claimed in claim 3, it is characterized in that described diaphragm plate (7) above be provided with secondary spring (6).
5. like claim 1, the 2 or 3 described protecting valves that leak; It is characterized in that said valve gap opening end has flange (301), said barrier film is arranged at this opening end and valve body cooperation place and is meant that the flange of said valve gap opening end pressing the outer rim of barrier film (202) to be sealed and matched.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210212068.7A CN102734543B (en) | 2012-06-23 | 2012-06-23 | Water leakage prevention valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210212068.7A CN102734543B (en) | 2012-06-23 | 2012-06-23 | Water leakage prevention valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102734543A true CN102734543A (en) | 2012-10-17 |
| CN102734543B CN102734543B (en) | 2015-06-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210212068.7A Active CN102734543B (en) | 2012-06-23 | 2012-06-23 | Water leakage prevention valve |
Country Status (1)
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| CN (1) | CN102734543B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899765A (en) * | 2014-04-02 | 2014-07-02 | 苏州沃特节水产品有限公司 | Valve block for water inlet valve of water tank |
| CN103925409A (en) * | 2014-04-02 | 2014-07-16 | 苏州沃特节水产品有限公司 | Water tank water inlet valve |
| CN106286929A (en) * | 2015-05-22 | 2017-01-04 | 佛山市顺德区美的饮水机制造有限公司 | One-way valve and water purifier |
| CN106763205A (en) * | 2016-12-28 | 2017-05-31 | 瓦房店轴承集团有限责任公司 | Pressure-controlled type Sendzimir bearing |
| CN109073104A (en) * | 2016-03-31 | 2018-12-21 | 株式会社富士金 | overflow valve |
| CN111927976A (en) * | 2020-07-21 | 2020-11-13 | 杭州神林电子有限公司 | Mechanical water leakage protection valve |
| CN115183155A (en) * | 2021-04-02 | 2022-10-14 | 汉宇集团股份有限公司 | Water-consuming appliance for measuring water pressure and monitoring water leakage, internet of things system and working method |
| CN115406108A (en) * | 2022-04-19 | 2022-11-29 | 武汉海尔热水器有限公司 | Decorative cover for water heater and water heater |
| CN115406109A (en) * | 2022-04-19 | 2022-11-29 | 武汉海尔热水器有限公司 | Decoration cover with sterilization function and water heater |
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| CN2109474U (en) * | 1989-11-12 | 1992-07-08 | 黄曾汛 | Water-leakage-proof water-saving valve |
| JP2004044839A (en) * | 2002-07-09 | 2004-02-12 | Matsushita Electric Ind Co Ltd | Hot water pouring device to apparatus |
| CN2608776Y (en) * | 2003-03-16 | 2004-03-31 | 常涛涛 | Leakproof water valve |
| CN101216115A (en) * | 2007-12-29 | 2008-07-09 | 李风仁 | Water leakage preventing valve |
| CN201126025Y (en) * | 2007-12-11 | 2008-10-01 | 北京康拓科技开发总公司 | Electromagnetic water valves |
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2012
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Patent Citations (5)
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| CN2109474U (en) * | 1989-11-12 | 1992-07-08 | 黄曾汛 | Water-leakage-proof water-saving valve |
| JP2004044839A (en) * | 2002-07-09 | 2004-02-12 | Matsushita Electric Ind Co Ltd | Hot water pouring device to apparatus |
| CN2608776Y (en) * | 2003-03-16 | 2004-03-31 | 常涛涛 | Leakproof water valve |
| CN201126025Y (en) * | 2007-12-11 | 2008-10-01 | 北京康拓科技开发总公司 | Electromagnetic water valves |
| CN101216115A (en) * | 2007-12-29 | 2008-07-09 | 李风仁 | Water leakage preventing valve |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103899765A (en) * | 2014-04-02 | 2014-07-02 | 苏州沃特节水产品有限公司 | Valve block for water inlet valve of water tank |
| CN103925409A (en) * | 2014-04-02 | 2014-07-16 | 苏州沃特节水产品有限公司 | Water tank water inlet valve |
| CN103925409B (en) * | 2014-04-02 | 2016-09-07 | 苏州沃特节水产品有限公司 | A kind of tank intake valve of water |
| CN106286929A (en) * | 2015-05-22 | 2017-01-04 | 佛山市顺德区美的饮水机制造有限公司 | One-way valve and water purifier |
| CN106286929B (en) * | 2015-05-22 | 2018-09-21 | 佛山市顺德区美的饮水机制造有限公司 | one-way valve and water purifier |
| CN109073104A (en) * | 2016-03-31 | 2018-12-21 | 株式会社富士金 | overflow valve |
| CN106763205A (en) * | 2016-12-28 | 2017-05-31 | 瓦房店轴承集团有限责任公司 | Pressure-controlled type Sendzimir bearing |
| CN111927976A (en) * | 2020-07-21 | 2020-11-13 | 杭州神林电子有限公司 | Mechanical water leakage protection valve |
| CN115183155A (en) * | 2021-04-02 | 2022-10-14 | 汉宇集团股份有限公司 | Water-consuming appliance for measuring water pressure and monitoring water leakage, internet of things system and working method |
| CN115183155B (en) * | 2021-04-02 | 2023-08-15 | 汉宇集团股份有限公司 | Water-using electrical appliance for measuring water pressure monitoring water leakage, internet of things system and working method |
| CN115406108A (en) * | 2022-04-19 | 2022-11-29 | 武汉海尔热水器有限公司 | Decorative cover for water heater and water heater |
| CN115406109A (en) * | 2022-04-19 | 2022-11-29 | 武汉海尔热水器有限公司 | Decoration cover with sterilization function and water heater |
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|---|---|
| CN102734543B (en) | 2015-06-03 |
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