EP1718906B1 - Durchlauferhitzer - Google Patents

Durchlauferhitzer Download PDF

Info

Publication number
EP1718906B1
EP1718906B1 EP04804661.9A EP04804661A EP1718906B1 EP 1718906 B1 EP1718906 B1 EP 1718906B1 EP 04804661 A EP04804661 A EP 04804661A EP 1718906 B1 EP1718906 B1 EP 1718906B1
Authority
EP
European Patent Office
Prior art keywords
wall
heater according
shaped part
throughflow heater
channel
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
EP04804661.9A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1718906A1 (de
Inventor
Martin Stickel
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.)
BSH Hausgeraete GmbH
Original Assignee
BSH Bosch und Siemens Hausgeraete GmbH
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 BSH Bosch und Siemens Hausgeraete GmbH filed Critical BSH Bosch und Siemens Hausgeraete GmbH
Priority to PL04804661T priority Critical patent/PL1718906T3/pl
Publication of EP1718906A1 publication Critical patent/EP1718906A1/de
Application granted granted Critical
Publication of EP1718906B1 publication Critical patent/EP1718906B1/de
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
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means

Definitions

  • the mentioned heaters are used, inter alia, in coffee machines or kettles and are subject to only static pressure, d. H. they are operated virtually without pressure.
  • the requirements for the tightness and the attachment of a heater with a molding are therefore not particularly high.
  • the heating device, and in particular the heat transfer element to which the heating element is applied does not require any special shaping and frequently only flat or simply deformed heat transfer elements are used.
  • the attachment of the heater with the molding, which provides the fluid space in which the fluid is to be heated, is often insoluble, z. B. by welding.
  • the molding for the pressure-stable fluid heater according to the invention for joining with a heating device according to the invention comprises a central portion which is adapted in shape to the central region of the heater, and a central portion surrounding wall portion for insertion into the channel of the heat transfer element of the heater, wherein the wall portion a Series of connecting means which are provided for non-releasable, positive connection in respective tabs of the heat transfer element in the heating device to prevent after assembly, a release of the two components, even under pressure.
  • the molded part is preferably formed from a plastic.
  • the recesses of the tabs extend from the channel wall into a section of the channel bottom.
  • a particularly good assurance of the connection is provided.
  • the inner and outer channel walls are substantially parallel to each other and are oriented substantially perpendicular to the central region.
  • the inner channel wall which extends from the edge down, also forms a sealing surface, which allows a radial seal between the heater and the molding. Due to the installation position of the heater with the edge upwards, this forms a water barrier, which prevents that in case of leakage escaping fluid can reach the heating element. First of all, the fluid would have to overcome the edge, which is curved upward, against gravity. The transition areas between the channel bottom and respective channel walls continue to represent a drip edge, can drain on the escaping water before it reaches the edge. In addition to a mechanical reinforcement of the heater, the edge also causes an increase in the length of the thermal path to the channel into which the wall portion of the molding is inserted.
  • the upwardly extending wall may preferably be turned outwardly away from the central region or may be substantially perpendicular to the central region. In the first variant, a slightly greater pressure resistance is achieved.
  • the electrical heating element has an electrically insulating substrate with an electrical resistance heating strip applied to the substrate.
  • the heat transfer element is preferably made of a material, in particular stainless steel, which has a low thermal conductivity, in particular in the lateral direction.
  • the connecting means are preferably provided on the side of the wall portion, which is associated with the channel wall with the tabs. This is the outside of the wall portion in accordance with the preferred embodiment of the heater.
  • the molded part has at least one inlet and at least one outlet opening for the fluid.
  • these are arranged in an advantageous embodiment of the invention in the central region of the molded part. This has the advantage that the wall section of the molded part can be optimized with regard to its sealing function.
  • FIGS. 1 to 4 Below is described an advantageous heating device for a flow heater designed according to the invention.
  • the heat transfer element is made of a metal, for example a stainless steel, which has a poor thermal conductivity in the lateral direction. Perpendicular thereto, ie in a plane perpendicular to the plane, the heat transfer element, however, has a good thermal conductivity, so that a effective transmission of the energy generated by the heating element to the fluid is ensured.
  • a temperature monitoring element 8 with a negative temperature coefficient is provided in a mounting area 6.
  • the channel walls 18 and 19 are arranged substantially parallel to each other and substantially perpendicular to the plane formed by the central region 4. In this case, the channel bottom does not extend below the central region 4.
  • the distance d is therefore greater than 0 in the limiting case or as shown. This makes it possible in a simple manner to apply to the outer surface 14 of the central region 4 the heating element 2, in particular the heating element. sections 5, apply in a printing process.
  • FIG. 5 is shown in a perspective view of the instantaneous water heater 100 according to the invention, showing the heating device 1 with a molded part 50 connected thereto.
  • the molded part 50 which consists for example of a plastic, has an inlet opening 51, which is oriented radially. Furthermore, two outlet openings 52 extending axially are provided. Each of the outlet openings 52 can be connected to a separate spray device of a dishwasher. Of course, the arrangement of the inlet opening and the outlet openings can also take place at locations other than those shown in the figure.
  • the latching between the heating device 1 and the molded part 50 can be seen.
  • the latching takes place via the already mentioned tabs 20, engage in the latching hooks 53, and prevent the release of the molded part 50 of the heating device 1 under pressure.
  • a sealing ring is arranged between the molding 50 and the heater 1. More precisely, the sealing ring is arranged between a wall of the molded part extending into the channel 16 and the inner channel wall 18, thereby also under pressure. ie under a possible deformation, in particular of the molded part, but also the heater, a high density is ensured.
  • FIG. 6 11 which shows an enlarged sectional view of the outer portion of the flow heater 100, the engagement of the heater 1, the molding 50 and a seal ring 57 will become more apparent. From this representation, in particular the embodiment of the molded part 50 and the wall 55, which engages in the channel 16, can be seen.
  • the inner wall portion 58 is stepped to receive a seal 57 between the inner channel wall 18 and the inner wall portion can.
  • the seal 57 is formed as a sealing ring and in the initial state o-shaped.
  • the seal lies in the provided with the reference numeral 58 stage of the inner wall portion.
  • a further step is formed, which allows the wall 55 to be adjacent to the inner channel wall 18 and the edge 15.
  • a reinforcement 59 circulates the central region 54 in a circular manner and serves only for mechanical reinforcement. Depending on the pressures for which the water heater must be designed, the gain 59 could be performed radially wider. If necessary, if only slight pressures occur, it would also be dispensable.

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)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP04804661.9A 2003-12-04 2004-12-02 Durchlauferhitzer Expired - Lifetime EP1718906B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL04804661T PL1718906T3 (pl) 2003-12-04 2004-12-02 Podgrzewacz przepływowy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10356789A DE10356789A1 (de) 2003-12-04 2003-12-04 Plattenförmige Heizvorrichtung und Formteil für einen Durchlauferhitzer und Durchlauferhitzer
PCT/EP2004/053241 WO2005054756A1 (de) 2003-12-04 2004-12-02 Plattenförmige heizvorrichtung und formteil für einen durchlauferhitzer und durchlauferhitzer

Publications (2)

Publication Number Publication Date
EP1718906A1 EP1718906A1 (de) 2006-11-08
EP1718906B1 true EP1718906B1 (de) 2013-04-24

Family

ID=34638359

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04804661.9A Expired - Lifetime EP1718906B1 (de) 2003-12-04 2004-12-02 Durchlauferhitzer

Country Status (5)

Country Link
EP (1) EP1718906B1 (pl)
DE (1) DE10356789A1 (pl)
ES (1) ES2406731T3 (pl)
PL (1) PL1718906T3 (pl)
WO (1) WO2005054756A1 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102987910A (zh) * 2012-10-25 2013-03-27 宁波好伙伴电器有限公司 电热水壶
CN103948312A (zh) * 2014-05-04 2014-07-30 宁波好伙伴电器有限公司 一种电热水壶及其制备方法
CN104957978B (zh) * 2015-07-20 2017-03-29 周林斌 一种加热防爆水壶的装配方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3626955A1 (de) * 1986-08-08 1988-02-18 Bosch Siemens Hausgeraete Durchlauferhitzer
GB9024419D0 (en) * 1990-11-09 1991-01-02 Ist Lab Ltd Heating apparatus
DE69520563T3 (de) * 1994-12-13 2006-11-09 Strix Ltd. Gefässe zum erhitzen von flüssigkeiten
DE29918863U1 (de) * 1999-10-27 2001-04-05 Forbach GmbH, 97616 Bad Neustadt Kunststoff-Kanalkörper für einen elektrisch beheizten Durchlauferhitzer

Also Published As

Publication number Publication date
ES2406731T3 (es) 2013-06-07
PL1718906T3 (pl) 2013-09-30
WO2005054756A1 (de) 2005-06-16
EP1718906A1 (de) 2006-11-08
DE10356789A1 (de) 2005-07-07

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