EP1567812B1 - Electric and solar water-heater supply and relief system - Google Patents
Electric and solar water-heater supply and relief system Download PDFInfo
- Publication number
- EP1567812B1 EP1567812B1 EP03751066A EP03751066A EP1567812B1 EP 1567812 B1 EP1567812 B1 EP 1567812B1 EP 03751066 A EP03751066 A EP 03751066A EP 03751066 A EP03751066 A EP 03751066A EP 1567812 B1 EP1567812 B1 EP 1567812B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- valve
- heater
- relief
- pressure
- 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.)
- Expired - Lifetime
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 239000012528 membrane Substances 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 230000002265 prevention Effects 0.000 abstract 1
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 206010063659 Aversion Diseases 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000779 depleting effect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
- F24H9/133—Storage heaters
- F24H9/136—Arrangement of inlet valves used therewith
Definitions
- the valve in Figure (3 ) consists of the cold water inlet (20), through which water flows into the valve body (21), the upper part of the body bears a facet (38) where the elastic valve (37) is located and communicates with the upper part of the valve (26). This part (26) is outside the water circuit and over the elastic valve (37) and communicates with the atmosphere through an opening (27) when the valve (37) is open.
- the valve body (21) bears a second facet (28) where the relief valve is fitted with a membrane (29), a spring (30) and an adjusting screw (31). It also bears a thread (42) onto which the cold water pipe (18) is connected.
- the valve functions as follows:
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Safety Valves (AREA)
- Multiple-Way Valves (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Road Signs Or Road Markings (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
- The present invention relates to a solar and electric water heater supply and relief system of free flow, which comprises a safety valve consisting of an elastic membrane with an air inlet valve.
- A known electric water supply and relief system, is described in
US-A-2 210 555 having a cold water input pipe, a multiple protection valve, which is installed at a distance from the water heater above the water level in the water heater and a cold water input pipe to the water heater, in which system the multiple protection valve comprises an elastic air input valve and a relief valve, the air input valve and the relief valve both communicating to a space above the water chamber of the multiple protection valve. The spring loaded relief valve opens at a set pressure and an air inlet valve opens at a pressure lower than the atmosphere pressure. - A water heater supply and relief system in accordance with the invention has a multi-protection valve, which is situated at a point always above the water level of the water heater according to
claim 1. -
Figure No 7 illustrates a water- heater with the currently applied connection. - A) How the connection to the network is made.
- B) Where to make the connection of the relief valve to the integrated non-return valve.
- C) Water-heater components as illustrated in
figure No 7. - D) How the water-heater functions.
- The water-heater components are:
- Boiler (1), Support base (2), hot water input pipe (4), cold water input (3), Relief valve with integrated non-return valve (7), Internal network pipe (11), water heating resistance (5), Thermostat switch (6), City network (13),Water meter (12)
- How does the water-heater function ?
The water enters from the main network (13) through the interposing non- return valve (7), thus filling the boiler (1). The relief valve (7) is parallel to the circuit and is kept closed under the effect of a spring set at the desired pressure level and operates when the pressure in the boiler (1) exceeds safe pressure level. The function of the non-return valve is to allow the water inflow from the main pipe to the boiler (1), while preventing the reverse flow from the boiler (1) to the network (13). - Drawbacks of the non-return valve functioning properly or not.
The problems created by the non-return valve are numerous and sometimes 100% dangerous. For example, we have set the relief valve at 10atm and the pressure in the network is 8 atm (and quite often close to the set level of relief valve) and we set the water-heater at hot water function, due to expansion, as there is no way to relieve the pressure, the relief valve (7) opens, resulting to home floods and even boiler collapses (explosion) if it (7) doesn't function. For this reason, the water-heaters manufacturers recommend the mounting of a pressure reducer to lower the network (13) pressure. However, as the reducer has a non-returning action, it does not allow reverse flow to the network (13) and causes the aforementioned problems similar to the non-return valve. When the non-return valve (7) does not function and remains open due to the cold water pipe (3) connection method at the lower part of the boiler and somehow the network (13) empties, it does not retain the boiler's fullness (1) and as a result there is leakage of hot or cold water to the network (13) risk of heater resistance (5) blow due to being in a vacuum. Risk of water network contamination due to inflow of drifted salts or decay products from the magnesium pole fitted in the solar boilers. For the aversion of this last risk, a non-return valve is normally fitted at the input of new supplies. However, this valve also participates 100% in the aforementioned problems of pressure rise in the interior of the boiler (1). To sum up, non-return valves not only do not solve any problem but also create all the aforementioned ones. Another serious problem that contributes to the depleting of the boilers due to non-return valves malfunction and the reverse flow of water to the network (13), as illustrated in theFigure (7 ) is the currently applied position of the input pipe (3). - The new system presented is bound to solve all the aforementioned problems. The new multiple-protection system (17),
Figure No 2, and the connection of the cold water input pipe on the upper part of the water-heater aims at the inflow of cold water and the intake of hot water through the relief valve and the retention of the boiler's fullness at the level of the line (14) shows infigure 2 . The aforementioned problems are overcone with the application of the system, with the elimination of non-return valves (7), the fitting of a new, multiple-relief valve (17) and the retention of the water level at the flow line (14).Figures (1) and (2 ) illustrate the connection of two boilers which, in terms of components, are identical toFigure (7 ). The points of difference are the absence of a reverting valve with the integrated relief valve (7) which was found inFigure (7 ), the change in the connection position of the cold water input pipe (3), the intake of hot and cold water through the multiple-relief valve (17) with a single pipe connection and the fitting position of the multiple-relief valve which is connected parallel to the circuit above the flow line (14) as illustrated inFigures No 1 andNo 2. Advantages of the new multiple-relief valve.
Protection of the boiler and the interior system from excessive pressure due to the abolishment of the non-return valves, the circuit functions as two communicating vessels, thus the pressure in the system and in the boiler (1) never exceeds network (13) pressure. Protection of the boiler (1) from a malfunction of the thermostat switch (6). If the thermostat switch fails to disconnect voltage, then in such a case there will simply be electricity consumption without any pressure problem due to communicating vessels effect. The cold-water inflow and the hot water intake are performed by a pipe through the relief valve (17) and the hot water outlets (43).The pressure reducer is no longer used as the pressure will never exceed the network (13) pressure. Easy emptying of the boiler (1) without installation of a faucet as the boiler empties within a few minutes by simply closing the inlet and opening the cold and the hot water taps (9) and (10). - The invention is described below with reference to the attached figures where by:
-
Figure (3 ) illustrates a section of a four-way valve according to the present invention. -
Figure (6 ) illustrates a section of a three-way valve according to the present invention. -
Figure (4 ) illustrates a section of an alternative four-way valve toFigure (3 ). -
Figure (5 ) illustrates a section of an alternative three-way valve tofigure (6 ). -
Figure (7 ) illustrates an installation of a water-heater and its components according to the contemporary, conventional method. -
Figure (1 ) illustrates an already installed water-heater where the connection according to the new system is presented. -
Figure (2 ) illustrates the installation of a new water-heater manufactured and connected according to the new system. - The valve in
Figure (3 ) consists of the cold water inlet (20), through which water flows into the valve body (21), the upper part of the body bears a facet (38) where the elastic valve (37) is located and communicates with the upper part of the valve (26). This part (26) is outside the water circuit and over the elastic valve (37) and communicates with the atmosphere through an opening (27) when the valve (37) is open. The valve body (21) bears a second facet (28) where the relief valve is fitted with a membrane (29), a spring (30) and an adjusting screw (31). It also bears a thread (42) onto which the cold water pipe (18) is connected.
The valve functions as follows: - At normal operation the inflow of cold water is done through the inlet (20), where the water pressure is directed towards the bottom of the boiler (1) Figure (No 2) through the opening (42) and the coaxial pipe (18). In case of overpressure of the system, the elastic valve (37) remains closed and the relief valve (29) opens at the pressure value set with the screw (31). In case of water supply failure from the main and consequent pressure loss, the valve body (21) empties and a sub-pressure is created through the opening (20) in the lower part of the elastic valve (37). As a result, the elastic valve (37) subsides from the facet (38) and the interior (20) communicates with the environment through this part (26) and the opening (27). As illustrated in the water-heater figure (No 2) the siphon collapses due to air inflow and the water-heater does not empty but retains all its content firmly at the flow line level (14). In case we have to empty the water-heater, we close the atmosphere communicating opening (27) of
figure (3 ) thus preventing the siphon from collapsing, we open the cold water (9) and hot water (10) taps as shown in the water-heater figure (No 2) and as a result air enters the area (20) through the hot water tap (10) while at the same time the water that is in the water-heater is channeled towards the drainage through the cold water tap (9). Figure (No 6) illustrates an alternative to the valve already described of which fitting requires a tee-connection (15)figure (1 ).Figure (4 ) illustrates a third alternative described whereby the elastic membrane (40) of the relief valve bears an central opening where the whole system of the four-way valve infigure (3 ) for external communication has been fitted. - This valve function as follows:
- At normal operation, figure (4A), the elastic membrane of the relief valve (40), and the elastic air inflow valve (37) remain closed. In case of overpressure in the circuit, the elastic valve (37) remains closed, while the relief valve (40) opens at the pressure value, set through the screw (31). In case of water supply failure from the main and consequent pressure loss, figure (4 B), the valve body (21) empties and a sub-pressure is created in the lower part of the elastic valve (37). While the membrane (40) on the relief valve remains closed, the elastic air inflow valve (37) opens and communicates with the environment through the opening (27) and as illustrated in the water-heater figure (No 2), the siphon collapses due to air inflow and the water-heater does not empty but retains all its content firmly at the flow line level (14).
Figure (5 ) illustrates an alternative to the three-way valve fitted parallel to the circuit with the use of tee device. Like the valve in figure (No 6) it bears a facet (22), where the elastic membrane (23) is located, which has a central opening (24) communicating with the upper part of the valve (25). The area (26) is outside the water circuit and under the elastic membrane. It is of a ring-like form and communicates with the atmosphere through theopening 27. The valve body (21) bears a second facet (28) where the relief valve is fitted with a membrane (29), a spring (30) and an adjusting screw (31).
Claims (1)
- A water-heater (1) with an electric solar supply and relief system, said supply and relief system being installed above said water-heater (1), whereby said supply and relief system directs a cold water supply through a pipe (18) to the lower part of the water-heater, said supply and relief system having a four-way valve (17) which incorporates a relief valve and an air-inflow valves (37, 38), said four-way valve (17) also consisting of a cold water inlet (20), whereby the cold water flows to the valve body (21), and in the upper part of the valve there being a valve seat (38) upon which an elastic valve (37) is located, said elastic valve (37) opening and closing communication with the upper part (26) of said four-way valve, said upper part (26) being positioned above said elastic valve (37) outside the water circuit and communicating with the atmosphere through an opening (27) when the elastic valve is open, said valve body bearing a second valve seat (28) belonging to a relief valve, whereby said relief valve is fitted with a separating membrane (29), a spring (30) and an adjusting screw (31), said four-way valve having a thread (42) for connecting said cold water pipe (18), said cold inlet (20) and hot water outlet being unobstructed by a valve or spring, whereby in case of a drop of pressure in the network connected to said water-heater and supply and relief system (17) below atmospheric pressure, atmospheric air is introduced to said system through said elastic valve (37), which cuts off water reverse flow towards said system, thus avoiding damage of the water heater, while allowing water heater overpressure relief when the pressure exceeds preset safety limits.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GR2002100457 | 2002-10-24 | ||
GR20020100457A GR1004388B (en) | 2002-10-24 | 2002-10-24 | Method and valve for multiple protection of boiler and hydraulic system |
PCT/GR2003/000047 WO2004038305A1 (en) | 2002-10-24 | 2003-10-15 | Electric and solar water-heater supply and relief system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1567812A1 EP1567812A1 (en) | 2005-08-31 |
EP1567812B1 true EP1567812B1 (en) | 2011-03-02 |
Family
ID=29764779
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03751066A Expired - Lifetime EP1567812B1 (en) | 2002-10-24 | 2003-10-15 | Electric and solar water-heater supply and relief system |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP1567812B1 (en) |
AT (1) | ATE500475T1 (en) |
AU (1) | AU2003269287A1 (en) |
DE (1) | DE60336260D1 (en) |
GR (1) | GR1004388B (en) |
WO (1) | WO2004038305A1 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
MX2007014037A (en) | 2007-11-09 | 2009-05-11 | Calentadores De America S A De | Water heater with ionized ignition and electronic control of temperature. |
MX2007014035A (en) | 2007-11-09 | 2009-05-11 | Calentadores De America S A De | Water heater of endorsement with ionized ignition and electronic control of temperature, for solar heaters of the type thermosiphon. |
MX2007014036A (en) | 2007-11-09 | 2009-05-11 | Calentadores De America S A De | Water heater of endorsement with ionized ignition and control of electronic temperature for heaters of circulation forced with solar application of energy. |
JP5836277B2 (en) * | 2009-09-25 | 2015-12-24 | ヘンリ ペテリ ベヘール ベー.フェー. | Equipment for quantitative discharge of hot water or boiling water |
TWI567271B (en) * | 2010-09-27 | 2017-01-21 | 亨瑞彼德理伯希爾公司 | Apparatus for dispensing hot or boiling water |
CN107178907A (en) * | 2016-03-09 | 2017-09-19 | 武汉海尔热水器有限公司 | Electric water heater inlet system and its control method |
CN107655227A (en) * | 2017-08-18 | 2018-02-02 | 海宁市海创通日用品科技有限公司 | Save just solar energy sewerage |
CN113144494A (en) * | 2021-03-25 | 2021-07-23 | 杭州智缤科技有限公司 | Intelligent water pressure detection system capable of detecting water discharge of fire hydrant |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5060687A (en) * | 1990-05-21 | 1991-10-29 | Moen Incorporates | Backflow preventer and vacuum breaker |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2210555A (en) * | 1934-12-12 | 1940-08-06 | Podolsky Jacob | Boiler relief device |
-
2002
- 2002-10-24 GR GR20020100457A patent/GR1004388B/en unknown
-
2003
- 2003-10-15 AU AU2003269287A patent/AU2003269287A1/en not_active Abandoned
- 2003-10-15 WO PCT/GR2003/000047 patent/WO2004038305A1/en not_active Application Discontinuation
- 2003-10-15 EP EP03751066A patent/EP1567812B1/en not_active Expired - Lifetime
- 2003-10-15 DE DE60336260T patent/DE60336260D1/en not_active Expired - Lifetime
- 2003-10-15 AT AT03751066T patent/ATE500475T1/en not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5060687A (en) * | 1990-05-21 | 1991-10-29 | Moen Incorporates | Backflow preventer and vacuum breaker |
Also Published As
Publication number | Publication date |
---|---|
EP1567812A1 (en) | 2005-08-31 |
AU2003269287A1 (en) | 2004-05-13 |
WO2004038305A1 (en) | 2004-05-06 |
GR1004388B (en) | 2003-11-18 |
DE60336260D1 (en) | 2011-04-14 |
ATE500475T1 (en) | 2011-03-15 |
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