EP0454744A1 - Dispositif pour la preparation d'eau chaude. - Google Patents

Dispositif pour la preparation d'eau chaude.

Info

Publication number
EP0454744A1
EP0454744A1 EP90902208A EP90902208A EP0454744A1 EP 0454744 A1 EP0454744 A1 EP 0454744A1 EP 90902208 A EP90902208 A EP 90902208A EP 90902208 A EP90902208 A EP 90902208A EP 0454744 A1 EP0454744 A1 EP 0454744A1
Authority
EP
European Patent Office
Prior art keywords
water
heating water
drinking water
heating
flow
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
Application number
EP90902208A
Other languages
German (de)
English (en)
Other versions
EP0454744B1 (fr
Inventor
Volker Stragies
Karl Soffner
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0454744A1 publication Critical patent/EP0454744A1/fr
Application granted granted Critical
Publication of EP0454744B1 publication Critical patent/EP0454744B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • F24D3/087—Tap water heat exchangers specially adapted therefore
    • 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
    • F24D17/0073—Arrangements for preventing the occurrence or proliferation of microorganisms in the water

Definitions

  • the invention relates to a method for warm water preparation by heat transfer from heating water to the drinking water to be heated, which takes place in a container. Furthermore, the invention relates to a device for hot water preparation by means of heat transfer from heating water in a container to the drinking water to be heated, wherein at least one preferably serpentine flow device is arranged in the container, the longitudinal axis of which preferably runs vertically.
  • the required drinking water temperature in the private household for personal care is just under 40 ° C and for cleaning and cleaning processes around 50 ° C. Due to these temperature specifications, storage water heaters were manufactured in which the drinking water is stored in order to be heated to the desired extent via heating coils through which heating water flows. Due to the large storage volume, the dwell time of the drinking water is quite long. The flow velocities themselves are extremely low and can be of the order of 1 m / sec. Storage volume and flow velocity enable thermal stratification within the boiler with temperatures that the multiplication of bacteria present in the drinking water to an extent enables health risks to arise.
  • Legionella pneumophila the gene zei ⁇ an extremely high speed multiplication at temperatures between 30 and 45 C C so that bacterial counts can be achieved, which can sen auslö ⁇ infection.
  • the pathogens are transmitted by inhalation of respirable aerosols. It must therefore be ensured that the drinking water used does not have an excessive number of Legionella bacteria. In other words, it must be ensured that Legionella bacteria do not multiply and existing bacteria are killed to the extent necessary. This means that the water must be heated to more than 60 ° C. At the same time, it should be ensured that the water to be heated has a high flow rate, so that there are no residence times which would favor the multiplication of the bacteria.
  • Instantaneous water heaters would meet the requirements set out above. Electric and gas water heaters are known.
  • the gas flow heaters enable immediate hot water delivery. As a rule, however, they are only used for kitchens or wash basins, since their use is limited because of their high connected load. With gas flow heaters, it is necessary that there is a gas connection.
  • the object of the present invention is to develop a method and a device of the type mentioned at the outset in such a way that drinking water is heated to the extent necessary so that legionella bacteria in particular are largely killed. Furthermore, a high flow rate should take place in the container in order to. this additionally ensures that bacterial growth does not occur. At the same time, the storage of large quantities of drinking water should be excluded.
  • the object is achieved procedurally in that the heating water is stored in the container, that the drinking water flows through the heating water in the flow device and that the flow device is surrounded in its drinking water extraction area by heating water, the temperature of which is> 60 ° C.
  • the teaching according to the invention ensures with simple measures that the legionella bacteria leading to the so-called legionnaire's disease do not find any area in the container within the critical temperature range in which the drinking water is stored in large quantities.
  • Existing bacteria are killed in that the drinking water flows through a zone of the heating water, at least in the removal area, in which temperatures above 60 ° C., preferably around 80 ° C., ie the temperature corresponding to the maximum temperature of the heating water.
  • one embodiment of the invention provides that the throughflow device runs through a vertically running heating water column, in the temperature T> 60 ° C in the upper range. Heating water of high temperature is accumulated in the heating water column, so that it is ensured that the heating water transfers the necessary heat to the drinking water in order to enable it to be heated to above 60 ° C., that is to say to convey a temperature at which the bacteria are in the shortest possible time Die off time.
  • the heating water is pumped around depending on the amount of water flowing through the flow device. This is to ensure that the heating water in the heating water column surrounding the flow device cannot be cooled to an extent that the necessary heating of the drinking water is omitted.
  • a device for hot water preparation of the type described at the outset is characterized according to an independent solution proposal in that the flow device is connected to the drinking water and that the flow device for generating a high-temperature heating water column is surrounded by a wall having passage openings. According to the invention, a continuous-flow heater is consequently made available in which the drinking water flowing through the container is heated by the heating water stored in the container.
  • the wall which has a hollow cylindrical geometry, furthermore ensures that strongly heated heating water is collected in a column in which the flow device runs.
  • the wall has passage openings in order to heat the heating water in the column to the desired temperature or to introduce heating water of the corresponding temperature into the column space.
  • guide elements such as guide plates are provided in the region of the upper edges of the passage openings, as a result of which heating water flowing on the outer surface of the wall is directed into the interior, that is to say the column area receiving the flow device.
  • the passage openings are preferably slit-shaped, with a screw line course with respect to their longitudinal direction.
  • the guide elements which are designed like a helical roof, run correspondingly.
  • the flow device itself preferably consists of a pipe following a helical or helical course, which in turn runs on the circumferential surface of a cylinder element such as an empty pipe. This additionally ensures a heat concentration directly in the area of the flow-through device, which ensures that the drinking water flowing through it is heated to the required high temperature.
  • the flow-through device can be insulated in the area of the drinking water outlet opening in order to shield the high temperature against uncontrolled cooling.
  • Heating water (16) which is supplied via a line (12) by means of a pump (14) is stored in a container (10) and can optionally be supplied via lines (18) and (20) by means of pumps (22) and (24) from the top of the container ( 26) is pumped into the lower part (28) or fed to the heating circuit via an extraction line (30).
  • the heating water (16) is heated in the usual way.
  • the line (12) there is also a flow rate device (32) through which the pumps (22) and (24) can be operated in order to circulate the heating water (16).
  • the heating water returned to the lower part (28) can be returned to the tank (10) evenly distributed via a rake-shaped distribution element (34).
  • two snake-shaped passage devices (36) and (38) are arranged in the container (10), through which drinking water flows.
  • the drinking water is via a line (40) via inside the container (10) running lines (42) and (44) into the lowest point of the flow device (36) and (38), in order to then pass through the container (10.)
  • the flow device (36) and (38) runs in a columnar area (48) or (50) of the heating water.
  • the heating water in particular in the head area (26), has temperatures which correspond to the maximum heating water temperature, that is to say in the order of 80 ° C.
  • the drinking water flowing through the line (40) through the passage devices (36) and (38) has a temperature, at least at the beginning of a dispensing operation, at which Legionella bacteria cannot multiply.
  • the drinking water flows through the flow device (36) or (38) at a high flow rate, so that there are short residence times.
  • each flow-through device (36), (38) has a hollow cylindrical geometry Send body (52) or (54) surrounded, which in turn is provided at least in the lower region (53) or (55) with through openings, which are identified by way of example with the reference numerals (56) or (58).
  • Send body (52) or (54) can flow from the outside into the column space (48) and (50) in order to collect and to ensure the necessary heating of the drinking water.
  • the pipe (52) or (54) points in the upper region Area (64) or (66) on the one hand has no openings and on the other hand can be isolated.
  • guide elements are arranged above the openings (56) and (58), which are identified by way of example with the reference numerals (60) and (62).
  • the guide elements (60) and (62) consequently have a roof shape, resulting in an overall helical course.
  • This configuration ensures that a heating water temperature which corresponds to the maximum temperature of the heating water supplied is set in the upper region or head region (64) or (66) inside the body (52) or (54).
  • the heating water (16) is supplied via the line (12), from which, in the exemplary embodiment, pipe sections (68) and (70) protrude into the interior of the hollow cylindrical bodies (52) and (54).
  • a type of Venturi training has been chosen to enable the desired circulation. This is additionally reinforced by the fact that the pumps (22) and (24) then force the heating water circuit through the container (10) when it is indicated via the flow rate device (32) that drinking water is being removed, which requires that heating water located in the columnar regions (48) and (50) is heated.
  • the drawing further illustrates that the helical pipe forming the flow device (36) or (38) extends around an empty pipe (68), (70). This results in a further concentration of heated heating water directly in the pipe area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Water Supply & Treatment (AREA)
  • Devices For Dispensing Beverages (AREA)
  • Cookers (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Manufacturing Of Electric Cables (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Sorption Type Refrigeration Machines (AREA)
  • Water Treatment By Sorption (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

De l'eau chaude stockée dans un réservoir (10) chauffe de l'eau potable circulant à travers un dispositif de circulation (36, 38). L'eau chaude (16) est concentrée autour du dispositif de circulation (36, 38) de telle manière que l'eau potable est chauffée à une température supérieure à 60°C.
EP90902208A 1989-01-21 1990-01-18 Dispositif pour la preparation d'eau chaude Expired - Lifetime EP0454744B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3901781A DE3901781A1 (de) 1989-01-21 1989-01-21 Verfahren und vorrichtung zur warmwasserbereitung
DE3901781 1989-01-21
PCT/EP1990/000094 WO1990008292A1 (fr) 1989-01-21 1990-01-18 Procede et dispositif pour la preparation d'eau chaude

Publications (2)

Publication Number Publication Date
EP0454744A1 true EP0454744A1 (fr) 1991-11-06
EP0454744B1 EP0454744B1 (fr) 1995-04-19

Family

ID=6372548

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90902208A Expired - Lifetime EP0454744B1 (fr) 1989-01-21 1990-01-18 Dispositif pour la preparation d'eau chaude

Country Status (5)

Country Link
EP (1) EP0454744B1 (fr)
AT (1) ATE121529T1 (fr)
AU (1) AU4963990A (fr)
DE (2) DE3901781A1 (fr)
WO (1) WO1990008292A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105387744A (zh) * 2015-12-22 2016-03-09 华南理工大学 一种冷热分流的过程节能蓄热器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4223070C2 (de) * 1992-03-11 1995-01-26 Hans Dr Viesmann Brauchwasserspeicher

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE353938A (fr) *
FR1251229A (fr) * 1957-10-19 1961-01-20 Procédé d'aménagement d'échangeur de chaleur à faisceaux de tubes ou tiges chauffants et échangeur en comportant application
EP0178351B1 (fr) * 1984-10-15 1988-05-04 Plaatverwerkende Industrie van Wijk en Boerma B.V. Chauffe-eau, par exemple chaudière d'eau sanitaire
DE3525990A1 (de) * 1985-07-20 1987-01-29 Buderus Ag Speicherbrauchwassererwaermer
DE8709840U1 (de) * 1987-07-17 1987-09-17 Carl Capito GmbH, 5908 Neunkirchen Heizkessel

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9008292A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105387744A (zh) * 2015-12-22 2016-03-09 华南理工大学 一种冷热分流的过程节能蓄热器
CN105387744B (zh) * 2015-12-22 2018-01-05 华南理工大学 一种冷热分流的过程节能蓄热器

Also Published As

Publication number Publication date
WO1990008292A1 (fr) 1990-07-26
ATE121529T1 (de) 1995-05-15
DE3901781C2 (fr) 1992-05-27
AU4963990A (en) 1990-08-13
DE59008942D1 (de) 1995-05-24
EP0454744B1 (fr) 1995-04-19
DE3901781A1 (de) 1990-07-26

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