EP0405136A2 - Installation pour la mise à disposition d'eau chaude - Google Patents
Installation pour la mise à disposition d'eau chaude Download PDFInfo
- Publication number
- EP0405136A2 EP0405136A2 EP90109717A EP90109717A EP0405136A2 EP 0405136 A2 EP0405136 A2 EP 0405136A2 EP 90109717 A EP90109717 A EP 90109717A EP 90109717 A EP90109717 A EP 90109717A EP 0405136 A2 EP0405136 A2 EP 0405136A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- heater
- heating device
- flow
- switch
- 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.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 141
- 238000009434 installation Methods 0.000 title abstract 4
- 238000002360 preparation method Methods 0.000 title abstract 3
- 238000010438 heat treatment Methods 0.000 claims abstract description 62
- 238000010079 rubber tapping Methods 0.000 claims abstract description 28
- 238000001816 cooling Methods 0.000 abstract 1
- 230000004087 circulation Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 2
- 238000009420 retrofitting Methods 0.000 description 2
- 230000002308 calcification Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0089—Additional heating means, e.g. electric heated buffer tanks or electric continuous flow heaters, located close to the consumer, e.g. directly before the water taps in bathrooms, in domestic hot water lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
Definitions
- the invention relates to a device for the immediate provision of hot water at the end of a pipeline that starts from a hot water supply device.
- the known systems for providing hot water have various disadvantages; in particular, there is an ongoing high expenditure of energy if hot water is to be available at the tap at any time despite the hot water supply device located further away.
- the energy consumption is comparatively greater, the less the tapping point is used (JP-OS 58-49836, 55-89632).
- Branched hot water systems with circulation pipes require a lot of hydraulic adjustment. You may need constant readjustments to ensure that they function properly.
- Circulation lines and pipe trace heating systems cannot be retrofitted or only with great effort. This disadvantages those systems that were designed without immediate hot water supply.
- the invention has for its object to constantly provide hot water while avoiding the disadvantages described.
- this object is achieved in that the wiring harness ends at a switchable water heating device to which a tapping point is directly connected, and that the water heating device is only switched on when water is removed and at the same time the water temperature at the end of the wiring harness or the inlet temperature the water heating device is insufficiently high.
- the heat source of the water heating device is accordingly only used when water is drawn off and when the water present in the pipeline has cooled to an inadmissible extent. In the course of water withdrawal, however, hot water flows in from the distant or central hot water supply point, so that the additional heat source is then no longer needed and switches off automatically.
- the water heating device advantageously has a water heater.
- the instantaneous water heater is designed as a thermostatically and fluidically controlled electric instantaneous water heater, the heating elements of which can be switched on and off by a series connection of thermostat and differential pressure meter or flow meter (AND condition).
- the electric instantaneous water heater advantageously has a step circuit which enables the heating elements to be switched on and off in stages.
- the tap changer is optionally assigned to the flow meter or differential pressure meter and / or the thermostat.
- the water heating device is preceded by a thermohydraulic switch, at which the line ends and from which a branch leads directly to the tapping point and another branch leads via the water heating device to the tapping point.
- thermohydraulic switch opens the branch that goes directly to the tapping point if the water temperature at the entrance to the switch is sufficiently high. On the other hand, it automatically opens the branch to the water heating device to the extent that the water temperature at its entrance, that is to say at the end of the pipeline, is no longer sufficiently high, even without water being drawn off. At the same time, when the water temperature drops, it closes the branch going directly to the tapping point more or less quickly. If the tapping point is opened again, water flows through the water heating device until the thermo-hydraulic switch closes the branch leading to the water heating device again due to an increase in the inlet temperature.
- the water heating device can therefore contain uncomplicated, inexpensive heat sources. The only thing that matters is that warm water is available at the point of use. Complicated temperature controls are unnecessary for this.
- thermohydraulic switch is equipped with a control plug, the movement of which is brought about by a thermal element, preferably an expansion element or a bimetal element, depending on the water temperature prevailing at the end of the pipeline.
- a thermal element preferably an expansion element or a bimetal element, depending on the water temperature prevailing at the end of the pipeline.
- Expansion elements are proven, reliably working components, as are bimetal elements. Either wax or a wax-like material is used as the expansion material.
- a flow switch for switching a water heater belonging to the water heating device is arranged in the branch leading to the water heating device.
- the heat output of the continuous-flow heater can be metered depending on the amount of water flowing per unit of time.
- the movement of the control plug is transferred to a switch which only switches on a water heater belonging to the water heating device when the control plug has simultaneously released the branch leading to the water heating device.
- the heating elements contained in the instantaneous water heater can of course be switched on and off in stages in order to adapt to the amount of water flowing through the instantaneous water heater per unit of time. This can also be done by the switch actuated by the movement of the control plug, which can be designed as a tap changer.
- the water heating device with flow heater and thermohydraulic switch forms a structural unit.
- Such a structural unit is easy to assemble anywhere. It is very suitable for retrofitting purposes. For retrofitting, it is only necessary, for example, to detach an already existing tapping point from the end of the line strand, to couple the unit to the end of the line strand and to connect the tapping point to the unit. After the unit is then connected to an electrical socket, it can go into operation if necessary.
- a hot water main line 9 extends from the hot water supply device 6, which can contain, for example, a hot water reservoir.
- Branch lines 10, 11 and 12 branch off from the main line 9. From each branch line, two branch lines lead to the individual tapping points. The branch lines and the tapping points are each constructed in the same way, so that in FIG. 1 only one branch line 3 and one tapping point 4 are provided with reference numbers.
- the connection point between secondary line 10 and branch line 3 is designed as a corner valve 2, which is shown in particular in FIG. 2. By turning the knurled wheel 13, the corner valve 2 can be closed and thereby the branch line 3 can be shut off from the secondary line 10.
- a switchable water heating device 1 with an electric water heater 1 'arranged. It is a thermostatically and fluidically controlled flow heater, the heating elements 14, 15, 16 of FIG. 2 can be switched on and off by a series connection of thermostat 5 and differential pressure meter or flow meter 17.
- the flow meter 17 is connected to a step switch 18, which enables the heating elements 14, 15, 16 to be switched on and off in stages.
- the thermostat 5 is located directly on the inflow side of the water heater 1 '. It reacts to the water temperature in the branch line 3.
- the tapping point 4 is connected directly.
- the control current flow goes from phase R via the contact 19 of the thermostat 5, the line 33, the contacts 20, 21 and 22 of the tap changer 18 and the coils of the contactors 26, 27, 28 to the ground connections 29, 30, 31.
- the power flow goes from phases R, S, T via contacts 23, 24, 25 of contactors 26, 27, 28 and via heating elements 14, 15 and 16 to ground connection 32.
- a removal point 4 is opened after a long time, that is to say when the branch line 3 has cooled, the contact 19 of the thermostat 5 is closed, with the result that the contactors are actuated and the heating elements can be switched on.
- the contact 19 remains closed until the hot water inlet temperature at the input of the instantaneous water heater 1 'exceeds a predetermined limit. Then the contact 19 opens again with the result that the contactors are switched off or can not be switched on again.
- the tap changer 22 It depends on the strength of the flow or the level of the differential pressure, whether the flow heater 1 'a heating element 14, the two heating elements 14 and 15 or all three heating elements 14, 15, 16 in operation.
- the tap changer 22 When the flow is weak, only the contact 23 is included in the tap changer 22, and the heating element 14 heats the water flowing through the water heater 1. If the measured flow rate is somewhat higher, the tap changer 22 also closes the contact 21. This also puts the second heating element 15 into operation. With an even stronger flow, the tap changer 18 switches on all three contacts 20, 21 and 22. As a result, all three heating elements 14, 15 and 16 go into operation, so that the water heating is strongest.
- the intensity of the water heating determined additionally or exclusively by the thermostat 5, which could, for example, have three contacts, the heat-sensitive elements of which are matched to three different temperatures. Each contact would then switch a specific heating element, and thus the intensity of the heat development of the instantaneous water heater 1 ' would depend on which of the three temperature levels the water temperature is currently on the input side of the instantaneous water heater 1'.
- the heating elements of the instantaneous water heater 1 ' should only remain in operation until the hot water supply device 6 takes over the supply of hot water. After switching off, they remain switched off for as long as the hot water inlet temperature of the instantaneous water heater 1 'does not fall below a certain limit. This limit can of course be set on the thermostat. They remain switched off even during pausing, as long as the water temperature is still high enough. Only when the removal pause is so high that the temperature falls below the lower limit of the thermostat, the contact 19 is switched on again. The instantaneous water heater 1 'then again takes over the immediate provision of sufficiently tempered water at the next removal process.
- the line 9, 10, 3 ends at a switchable water heating device 34.
- the tapping point 4 is connected directly to the water heating device 34.
- the water heating device 34 has a continuous-flow heater 35.
- the water heating device 34 is preceded by a thermohydraulic switch 36.
- the wiring harness 9, 10, 3 ends directly at this thermohydraulic switch 36.
- thermo-hydraulic switch 36 From the thermo-hydraulic switch 36, a branch 37 goes directly to the tapping point 4. Another branch 38 goes via a flow switch 39 to the inlet connection 40 of the instantaneous water heater 35. The outlet nozzle 41 of the continuous flow heater 35 is connected to the extraction point 4.
- thermohydraulic switch 36 is equipped with a control plug 42, the movement of which is effected by a thermal element 43 as a function of the water temperature prevailing at the end of the pipeline 9, 10, 3.
- the thermal element 43 is preferably an expansion element.
- a shift rod 44 of the expansion element 43 is supported against a bridge 45 fixed to the housing.
- the housing 46 of the expansion element 43 is firmly connected to the control plug 42.
- a strong coil spring 47 is arranged so that it constantly tries to move the housing 46 and the control plug 42 as far as possible to the right until the control plug 42 closes the branch 37 and opens the branch 38 entirely, as shown in FIG. 3. This switching state of the control plug is reached at an impermissibly low water temperature at the end of branch line 3.
- the water heating device 34 forms a structural unit with the instantaneous heater 35, the thermohydraulic switch 36, the flow switch 39 and a relay 57, symbolized by a housing border 49 shown in broken lines.
- a line 52 leads from an external power connection mp to the coil 56 of the relay 57.
- a line 51 leads from the coil 56 to the flow switch 39. From an external power connection ⁇ , a line 50 also leads to the flow switch 39.
- a line 55 leads from an external power connection Mp to the instantaneous water heater 35. From an external power connection R, a line 53 leads to the switching bridge 58 of the relay 57. A line 54 leads from the switching contact 59 of the relay 57 to the instantaneous heater 35.
- the tapping point 4 When the tapping point 4 is opened after a long pause in tapping, a water flow begins in the direction of the arrows, and the flow switch 39 is activated by this flow. As a result, the coil 56 receives voltage, which then switches on the switching bridge 58, as shown in FIG. 3. As a result, the instantaneous heater 35 also receives voltage, for as long as the flow continues in a predetermined strength.
- the expansion material contained in the expansion element 43 expands, so that the switching plug 42 subsequently opens the branch 37 and closes the branch 38.
- the training according to FIG. 5 differs from the training according to FIGS. 3 and 4 by the following:
- the movement of the control plug 42 is transmitted through a switching rod 60 to the switching bridge 61 of a switch 62.
- the switch 62 switches on the relay 57 to the water heating device 34 'belonging to instantaneous heater 35' only when the control plug 42 has at the same time released the branch 38 leading to the water heating device 34 'or its instantaneous heater 35', as shown in FIG. 5.
- the relay 57 is equipped with a solenoid 63, which keeps the switching bridge 58 closed in the deenergized state, as shown in FIG. 5.
- the water heater 35 ' contains a flow switch, not shown here, which allows a flow of current through the lines 54 and 55 to heating elements of the water heater 35' only when water flows in the direction of the arrows through the water heater 35 '. 5, this is the case.
- a line 64 leads from the external electrical current connection r to the switching bridge 61 of the switch 62.
- a line 65 leads from the switching contact 66 of the switch 62 to the solenoid 63. From there, the line 52 leads to the external current connection mp.
- the new facility has the advantage that it does not cause additional energy costs when the tapping points are not used. Nevertheless, hot water is immediately available at the tapping points. If a tapping point is used relatively frequently, no additional energy consumption can occur because the instantaneous water heater then remains switched off.
- the entire concept of the device according to the invention is such that it can be retrofitted practically anywhere at a reasonable cost.
- the repair effort in the device according to the invention in the event of faults is low.
- only one hot water supply point is shut down in the event of a fault. All other tapping points can remain fully functional. Even if the central hot water supply fails, hot water can continue to be withdrawn to the usual extent. The facility is therefore designed redundantly, and disruption to the hot water supply is reduced to a minimum.
- thermo-hydraulic switch Calcification of the heating elements is reduced by the thermo-hydraulic switch.
- the volume flow reduced by the instantaneous water heater (depending on temperature and quantity with a reasonable connected load) reaches its usual size due to the thermo-hydraulic switch, due to or supported by different pipe cross-sections.
Landscapes
- 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)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- Lubricants (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Devices For Medical Bathing And Washing (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Steam Or Hot-Water Central Heating Systems (AREA)
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3921135 | 1989-06-28 | ||
DE3921135 | 1989-06-28 | ||
DE4011848 | 1990-04-12 | ||
DE4011848A DE4011848A1 (de) | 1989-06-28 | 1990-04-12 | Einrichtung zur warmwasserbereitstellung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0405136A2 true EP0405136A2 (fr) | 1991-01-02 |
EP0405136A3 EP0405136A3 (en) | 1991-05-15 |
EP0405136B1 EP0405136B1 (fr) | 1993-11-18 |
Family
ID=25882425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90109717A Expired - Lifetime EP0405136B1 (fr) | 1989-06-28 | 1990-05-22 | Installation pour la mise à disposition d'eau chaude |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0405136B1 (fr) |
AT (1) | ATE97478T1 (fr) |
DE (2) | DE4011848A1 (fr) |
DK (1) | DK0405136T3 (fr) |
ES (1) | ES2046588T3 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2298480A (en) * | 1995-02-11 | 1996-09-04 | Neville Ian Benson | Shower using stored hot water and instantaneous heating |
FR2824627A1 (fr) * | 2001-05-09 | 2002-11-15 | Sdecc | Dispositif de production d'eau chaude sanitaire a partir d'un miniballon a maintien electrique et d'une chaudiere mixte a gaz |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111156583B (zh) * | 2019-12-25 | 2021-11-23 | 哈尔滨新中新电子股份有限公司 | 一种可调节温度的校园洗浴用水供应*** |
GB2617341A (en) * | 2022-04-04 | 2023-10-11 | Chamberlain Toby | An ancillary water heating system |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1753298A1 (de) * | 1967-02-09 | 1971-07-08 | Fonderie Soc Gen De | Haushalts-Warmwasserbereiter |
EP0098450A2 (fr) * | 1982-07-02 | 1984-01-18 | Joh. Vaillant GmbH u. Co. | Source de chaleur chauffée par combustible |
JPS59142348A (ja) * | 1983-02-02 | 1984-08-15 | Matsushita Electric Ind Co Ltd | 給湯装置 |
JPS59153057A (ja) * | 1983-02-22 | 1984-08-31 | Matsushita Electric Ind Co Ltd | 給湯装置 |
-
1990
- 1990-04-12 DE DE4011848A patent/DE4011848A1/de not_active Withdrawn
- 1990-05-22 EP EP90109717A patent/EP0405136B1/fr not_active Expired - Lifetime
- 1990-05-22 ES ES199090109717T patent/ES2046588T3/es not_active Expired - Lifetime
- 1990-05-22 DK DK90109717.0T patent/DK0405136T3/da active
- 1990-05-22 DE DE90109717T patent/DE59003508D1/de not_active Expired - Fee Related
- 1990-05-22 AT AT90109717T patent/ATE97478T1/de not_active IP Right Cessation
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1753298A1 (de) * | 1967-02-09 | 1971-07-08 | Fonderie Soc Gen De | Haushalts-Warmwasserbereiter |
EP0098450A2 (fr) * | 1982-07-02 | 1984-01-18 | Joh. Vaillant GmbH u. Co. | Source de chaleur chauffée par combustible |
JPS59142348A (ja) * | 1983-02-02 | 1984-08-15 | Matsushita Electric Ind Co Ltd | 給湯装置 |
JPS59153057A (ja) * | 1983-02-22 | 1984-08-31 | Matsushita Electric Ind Co Ltd | 給湯装置 |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN Band 8, Nr. 270 (M-344)(1707), 11. Dezember 1984; & JP - A - 59142348 (MATSUSHITA DENKI SANGYO) 15.08.1984 * |
PATENT ABSTRACTS OF JAPAN Band 8, Nr. 284 (M-348)(1721), 26. Dezember 1984; & JP - A - 59153057 (MATSUSHITA DENKI SANGYO) 31.08.1984 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2298480A (en) * | 1995-02-11 | 1996-09-04 | Neville Ian Benson | Shower using stored hot water and instantaneous heating |
FR2824627A1 (fr) * | 2001-05-09 | 2002-11-15 | Sdecc | Dispositif de production d'eau chaude sanitaire a partir d'un miniballon a maintien electrique et d'une chaudiere mixte a gaz |
Also Published As
Publication number | Publication date |
---|---|
EP0405136B1 (fr) | 1993-11-18 |
DE59003508D1 (de) | 1993-12-23 |
ATE97478T1 (de) | 1993-12-15 |
DK0405136T3 (da) | 1994-01-17 |
DE4011848A1 (de) | 1991-01-03 |
EP0405136A3 (en) | 1991-05-15 |
ES2046588T3 (es) | 1994-02-01 |
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