EP0346977B1 - Chauffe-eau - Google Patents

Chauffe-eau Download PDF

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Publication number
EP0346977B1
EP0346977B1 EP89201482A EP89201482A EP0346977B1 EP 0346977 B1 EP0346977 B1 EP 0346977B1 EP 89201482 A EP89201482 A EP 89201482A EP 89201482 A EP89201482 A EP 89201482A EP 0346977 B1 EP0346977 B1 EP 0346977B1
Authority
EP
European Patent Office
Prior art keywords
heat exchanger
line
water
accumulator
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
Application number
EP89201482A
Other languages
German (de)
English (en)
Other versions
EP0346977A1 (fr
Inventor
Paul Heimbach
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.)
Nv Vaillant Sa
Vaillant-Schonewelle BV
Vaillant Austria GmbH
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Original Assignee
Vaillant Austria GmbH
Nv Vaillant Sa
Joh Vaillant GmbH and Co
Vaillant GmbH
Vaillant SARL
Vaillant Ltd
Vaillant-Schonewelle BV
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 Vaillant Austria GmbH, Nv Vaillant Sa, Joh Vaillant GmbH and Co, Vaillant GmbH, Vaillant SARL, Vaillant Ltd, Vaillant-Schonewelle BV filed Critical Vaillant Austria GmbH
Publication of EP0346977A1 publication Critical patent/EP0346977A1/fr
Application granted granted Critical
Publication of EP0346977B1 publication Critical patent/EP0346977B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F24D3/00—Hot-water central heating systems
    • F24D3/08—Hot-water central heating systems in combination with systems for domestic hot-water supply
    • 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
    • F24D19/1066—Arrangement or mounting of control or safety devices for water heating systems for the combination of central heating and domestic hot water
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/212—Temperature of the water
    • F24H15/219—Temperature of the water after heating
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/20—Control of fluid heaters characterised by control inputs
    • F24H15/242—Pressure
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/305—Control of valves
    • F24H15/31—Control of valves of valves having only one inlet port and one outlet port, e.g. flow rate regulating valves
    • 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
    • F24H15/00—Control of fluid heaters
    • F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
    • F24H15/355—Control of heat-generating means in heaters
    • F24H15/36—Control of heat-generating means in heaters of burners

Definitions

  • the invention relates to a water heater with a heatable via a heat exchanger and a tap which is fed directly from this memory and / or from the heat exchanger, a controller being provided by means of a temperature sensor to monitor the temperature of the water at the outlet of the heat exchanger and to determine the path of the water throughput. which, after reaching a target temperature value, opens a bypass line that connects the outlet of the heat exchanger to the tap line and bypasses the store.
  • Such a water heater is known from DE-OS 3 714 968.
  • the disadvantage of this arrangement is that when the tap is wide open and the outlet temperature is set high, a very large amount of storage water and thus a large storage volume is required to bridge the start-up time of the water heater.
  • a large storage volume is energetically unfavorable and difficult to accommodate in terms of space in a water heater of a generally customary size, an uneven one must be present under certain initial conditions Outlet temperature at the beginning of the tap process must be accepted.
  • the object of the invention is to reduce the storage volume of such a water heater to an optimal minimum. Such a reduction in the storage volume is cost-saving, reduces the weight of the water heater and its energy consumption.
  • the water throughput of a water heater of the type mentioned in the start-up phase of each tap operation can be adjusted to an adjustable minimum value by means of a throttle, a pressure switch being arranged in a cold water supply line leading to the heat exchanger , to which a branch line leading into the inlet of the heat exchanger is connected, which contains the adjustable throttle for the cold water supply.
  • Limiting the water throughput according to the invention within the thermal start-up time leads to a reduction in the storage volume in two respects.
  • the storage volume decreases in the ratio of the reduced throughput to the nominal throughput with the same start-up time
  • the thermal useful power that decreases with the hot water throughput during the start-up phase leads to a shortening of this phase.
  • the minimum amount of storage water to be kept available is determined by using this amount to bridge the thermal start-up time of the water heater until hot water is available in the run.
  • the arrangement of the throttle has the advantage that, due to the throttled cold water supply and thus throttled hot water withdrawal, an almost complete removal of the hot water in the storage tank is possible.
  • the invention is now based on the knowledge that it is advantageous in this sense to limit the amount of hot water that can be drawn within the start-up time, regardless of how far the tap is opened, to a minimum value, in order to achieve a comparatively small amount of storage water and a small amount Storage volume to be able to bridge the start-up time.
  • the pressure switch closes the return flow of the storage to the heat exchanger when the pressure in the storage falls and releases the cold water supply via the throttle, while a pressure sensor connected to the tap via a branch line
  • the burner that heats the heat exchanger starts with a nominal load via a control line.
  • This embodiment is characterized by little design effort in that a pressure drop in the storage when opening the tap valve can be used to start the burner for reheating the storage immediately while the tap water is removed from the storage. This ensures the continued supply of hot water.
  • a branch line opening into the input of the heat exchanger is connected to the pressure switch and contains a valve controlled by the controller, which opens when the temperature setpoint occurs and serves to supply the heat exchanger with cold water.
  • This configuration makes it possible to fully release the cold water throughput to the heat exchanger in accordance with the position of the nozzle when the hot water at the outlet of the heat exchanger reaches the desired temperature.
  • the controller controlled by the temperature in the output line of the heat exchanger is connected to the valve via a control line.
  • the switching state of the valve can be controlled directly as a function of the temperature of the tap water at the outlet of the heat exchanger.
  • a pressure switch at the outlet of the heat exchanger which, when the pressure in the heat exchanger rises, blocks its hot water outlet to the storage tank and opens the bypass line leading to the tap line.
  • thermal recharging is controlled by a storage thermostat after each dispensing operation or to compensate for loss of standby heat. This ensures the constant readiness to draw hot water.
  • the only drawing figure shows the circuit diagram of a water heater according to the invention.
  • the heat exchanger 1 which is heated by a burner (not shown), is assigned a hot water tank 2, the design of which is basically arbitrary within the scope of the invention.
  • this memory can encase or flank the heat exchanger.
  • the heat exchanger 1 contains a coil 3 through which the heating water flows and which is surrounded by the water to be heated. This water is fed to the heat exchanger 1 via a hydraulic pressure switch 4 which is connected to a cold water supply line 5.
  • This pressure switch 9 is connected to the output 11 of the heat exchanger 1.
  • a throttle 13 In a branch line 12 starting from the pressure switch 4 there is a throttle 13 and in a further branch line 14 there is a cold water valve 15 which is controlled via a control line 16 by a controller 17 which in turn is connected via a control line 18 to a control of the flow temperature of the heating water stands.
  • the storage thermostat 28 with the temperature sensor 27 is connected through the control line 19 to the higher-level control unit of the water heater.
  • a pressure sensor 21 which is connected via a control line 22 to the control of the burner heating the heat exchanger 1.
  • the second hydraulic switch 9 is connected via lines 11 and 25 to the heat exchanger, via line 10 to the tap line 8 and via line 24 to the accumulator 2.
  • the control line 23 links the temperature transmitter 26 in line 11 to the temperature controller 17.
  • the heating water circuit is switched to flow to heat exchanger 1.
  • the thermal start-up phase is run through on the primary and secondary side of the system with throttled hot water throughput.
  • the hot water flowing through the heat exchanger 1 flows via the pressure switch 9 and the lines 11, 25 and 25 to the storage tank 2.
  • the controller 17 opens the cold water valve 15 via the control line 16 and releases the flow of the cold water to the coil 3 arranged in the heat exchanger 2 without throttling.
  • the associated pressure increase in the heat exchanger 1 switches the switch 9 into the operating position in which it switches the hot water outlet via the flow line 24 to Memory 2 blocks and the bypass line 10 to the tap 8 and tap 7 opens.
  • This tap 7 is now supplied by the heat exchanger 1 with hot water in the passage.
  • the burner begins to operate in cyclical operation.
  • the heating water temperature setpoint is reduced by the controller 18 connected downstream of the controller 17.
  • the controller 18 connected downstream of the controller 17.
  • the flow pressure in the pressure switches 4 and 9 drops to zero, and these pressure switches go into the rest position, releasing the circulation route via the flow 24 of the heat exchanger 1 and the return 6 for the thermal recharging of the store 2.
  • the reloading process for which the burner may have to switch on several times, is completed as soon as the temperature sensor 27 of the storage thermostat 28 detects that the target value has been reached.
  • a corresponding switching pulse is sent via the control line 19 to the higher-level control unit of the water heater.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid Mechanics (AREA)
  • Water Supply & Treatment (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)
  • Cookers (AREA)
  • Resistance Heating (AREA)
  • Thermally Insulated Containers For Foods (AREA)

Claims (8)

  1. Chauffe-eau avec un accumulateur chauffé par l'intermédiaire d'un échangeur de chaleur, et avec un robinet de prise d'eau alimenté directement par cet accumulateur et/ou l'échangeur de chaleur, un régulateur étant prévu contrôlant, à l'aide d'un capteur thermique, la température de l'eau à la sortie de l' échangeur de chaleur et réglant en conséquence l'écoulement de l'eau, et qui ouvre, en fonction d'une consigne de température, une conduite de dérivation reliant la sortie de l'échangeur de chaleur au tuyau de prise d'eau en by-passant l'accumulateur, caractérisé par le fait que le débit d'eau, au début du prélèvement d'eau et indépendamment de l'ouverture du robinet, peut être réglé sur un minimum à l'aide d'un organe d'étranglement (13), une conduite d'eau (5) alimentant l'échangeur de chaleur (1) en eau froide étant munie d'un commutateur manométrique (4) sur lequel est branchée une dérivation (12) qui comporte l'organe d'étranglement (13) réglant l'arrivée de l' eau froide.
  2. Chauffe-eau suivant la revendication 1, caractérisé par le fait que le commutateur (4) ferme le retour de l'accumulateur (2) relié à l'échangeur de chaleur (1) au moment où la pression baisse dans l'accumulateur (2), et ouvre l'écoulement d'eau froide à travers l'organe d'étranglement (13), et qu'un capteur manométrique (21) relié au tuyau de prise d'eau (8) par une conduite (20) fait démarrer, par l'intermédiaire d'une ligne (22), le brûleur chauffant l'échangeur de chaleur à charge nominale.
  3. Chauffe-eau suivant l'une des revendications précédentes, caractérisé par le fait que sur le commutateur manométrique (4) est branchée une conduite (14) débouchant dans l'entrée de l'échangeur de chaleur (1), et qui comporte une valve (15) actionnée par le régulateur (17) et qui s'ouvre, au moment où la consigne de température est atteinte, pour alimenter l'échangeur de chaleur (1) en eau froide.
  4. Chauffe-eau suivant la revendication 3, caractérisé par le fait que le régulateur (17) asservi par la température dans la conduite de sortie (11) de l'échangeur de chaleur (1), est relié par une ligne (16) à la valve (15).
  5. Chauffe-eau suivant l'une des revendications précédentes, caractérisé par un commutateur manométrique (9) disposé à la sortie (11) de l'échangeur de chaleur (1), et qui, en cas d'augmentation de la pression dans l'échangeur de chaleur (1) coupe sa sortie d'eau chaude (24) alimentant l'accumulateur (2) et ouvre la dérivation (10) se terminant à la conduite de prise d'eau (8).
  6. Chauffe-eau suivant la revendication 5, caractérisé par le fait que la dérivation (10) part du commutateur manométrique (9) disposé à la sortie (11) de l' échangeur de chaleur (1) et débouche dans la conduite de prise d'eau (8).
  7. Chauffe-eau suivant l'une des revendications précédentes, caractérisé par le fait que le régulateur (17) marchant en fonction de la température régnant à la sortie (11), est relié par une ligne (18) à un organe réglant la température de départ de l'eau chauffant l'accumulateur (2).
  8. Chauffe-eau suivant l'une des revendications précédentes, caractérisé par le fait que la température de l'eau dans l'accumulateur est contrôlée, pour ce qui est du rechargement et de l'état de fonctionnement, par un thermostat (28).
EP89201482A 1988-06-14 1989-06-09 Chauffe-eau Expired - Lifetime EP0346977B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT1533/88 1988-06-14
AT0153388A AT390504B (de) 1988-06-14 1988-06-14 Wasserheizer

Publications (2)

Publication Number Publication Date
EP0346977A1 EP0346977A1 (fr) 1989-12-20
EP0346977B1 true EP0346977B1 (fr) 1992-11-11

Family

ID=3515560

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89201482A Expired - Lifetime EP0346977B1 (fr) 1988-06-14 1989-06-09 Chauffe-eau

Country Status (5)

Country Link
EP (1) EP0346977B1 (fr)
AT (2) AT390504B (fr)
DE (2) DE3918733A1 (fr)
ES (1) ES2037394T3 (fr)
GR (1) GR3006756T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9522102D0 (en) * 1995-10-28 1996-01-03 Gledhill Water Storage Improvements relating to heating apparatus
DE10344413B4 (de) * 2003-09-25 2005-08-25 Bbt Thermotechnik Gmbh Verfahren zur Regelung der Warmwasserbereitung
CN109185950A (zh) * 2018-10-24 2019-01-11 中冶华天南京电气工程技术有限公司 一种双分流换热站
CN113074406B (zh) * 2021-04-08 2022-05-10 湖南全家富电器科技有限公司 一种基于智能语音控制的家用取暖器

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1527970A (fr) * 1967-04-14 1968-06-07 Fonderie Soc Gen De Installation assurant la production d'eau chaude sanitaire
DE3714968A1 (de) * 1986-05-03 1987-11-05 Vaillant Joh Gmbh & Co Warmwasserversorgungsanlage

Also Published As

Publication number Publication date
ES2037394T3 (es) 1993-06-16
AT390504B (de) 1990-05-25
DE58902658D1 (de) 1992-12-17
GR3006756T3 (fr) 1993-06-30
EP0346977A1 (fr) 1989-12-20
ATA153388A (de) 1989-10-15
DE3918733A1 (de) 1989-12-21
ATE82378T1 (de) 1992-11-15

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