EP3344928A1 - Heizblockhalbschale und heizblock mit führungselementen für eine heizwendel - Google Patents
Heizblockhalbschale und heizblock mit führungselementen für eine heizwendelInfo
- Publication number
- EP3344928A1 EP3344928A1 EP16759715.2A EP16759715A EP3344928A1 EP 3344928 A1 EP3344928 A1 EP 3344928A1 EP 16759715 A EP16759715 A EP 16759715A EP 3344928 A1 EP3344928 A1 EP 3344928A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- heating
- guide elements
- heating block
- guide
- section
- 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.)
- Withdrawn
Links
- 238000010438 heat treatment Methods 0.000 title claims abstract description 173
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- 239000007788 liquid Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000010358 mechanical oscillation Effects 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/101—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply
- F24H1/102—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance
- F24H1/103—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium using electric energy supply with resistance with bare resistances in direct contact with the fluid
-
- 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
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
- F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
- F24H1/121—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium using electric energy supply
-
- 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 invention relates to a Walkerblockschschale for a water heater, in particular for a household water heater.
- the invention further relates to a heating block and a water heater with heating block.
- Conventional domestic electric instantaneous water heaters comprise one or more heating blocks, each with at least one - usually meander-shaped - heating channel through which liquid (in particular water) can be passed and in which a heating coil is arranged.
- Such a heating block may comprise in at least one section two composite Hammerblockschschalen.
- Each of the Schublockschschalen can form a partial wall for the heating channel. If the two Schublockschschalen assembled, form the two partial walls together a tube that surrounds at least a portion of the heating channel.
- the heating coil is formed from a heating wire, which is usually wound helically around a helical center.
- the heating coil is an electrical resistance that heats up when passing electrical current and thereby gives off heat to the water flowing around it.
- the heating coil To avoid local overheating (which results in the formation of so-called “hotspots”), also to prevent adhesion of air bubbles and the mechanical oscillation of the heating coil (with associated noise), the heating coil must be kept in a suitable position in the heating channel.
- a heating channel is formed in conventional heating blocks in such a way that narrow guide ribs center the heating coil in the heating channel. Between straight sections, the heating channel has turning sections in which the channel guide is deflected by 180 °. The guide ribs each extend over the straight sections of the heating channel and engage the helix wound heating coil on the outside.
- the guide ribs create spaces between the heating coil and an inner wall of the heating block (which forms a wall of the heating channel) and position the heating coil in the center of the heating channel.
- Water passed through the heating channel thus flows to a small extent through the (outer) intermediate spaces and to another, larger part through a free space in the middle of the heating coil.
- An increased flow resistance occurs in the intermediate spaces, in particular the guide ribs produce disadvantageous turbulences and the flow velocity is reduced in the intermediate spaces.
- a uniform flow around the heating coil with water to be heated is thereby prevented.
- the heating channel comprises a wave-shaped section, at the ends of a heating coil is fixed.
- the heating coil Due to the waveform of the section, the heating coil abuts at different locations of the heating channel wall and is thereby positioned. Due to the waveform, however, an increased flow resistance is generated in such heating channels. In addition, the heating blocks with wavy sections are expensive to manufacture.
- the present invention has for its object to avoid the disadvantages mentioned in a cost effective manner.
- a Schumacherschschale invention forms a partial wall for a heating channel with at least one straight section.
- at least two guide elements are arranged on the partial wall, in such a way that they lie one behind the other in the axial direction (ie from one to the other) Flowing through the flow direction to be heated liquid are washed around one after the other).
- the guide elements are each adapted to support the heating coil in the radial direction.
- An inventive heating block for a water heater forms a wall for a heating channel with at least one straight section and a centrally arranged therein heating coil.
- at least two guide elements are arranged one behind the other in the axial direction on the wall, which are each arranged to support the heating coil in the radial direction.
- the guide elements thus serve as the guide ribs of the known heating blocks as supports which are adapted to position the heating coil in a radial center of the heating channel.
- a heating channel formed by a heating block half-shell according to the invention and a heating channel formed in a heating block according to the invention have at least two guide elements which are arranged behind one another in the direction of flow of a liquid to be heated.
- the guide elements according to the present invention can each be flowed around within the straight section of the heating channel, so that the liquid flow is impaired only in the vicinity of the guide elements and thus only in a short section of the straight section.
- the positioning of the heating coil is achieved in a straight section of the heating channel.
- a uniform flow interfering waveform between the turning sections of the heating channel can therefore be avoided.
- Avoiding the waveform also means a simplification of a production of the Schublock Halbschale or the heating block.
- a heating block according to the invention may comprise two composite heating block half-shells, one or both of which may be designed as heating block half-shells according to the invention, as described in this document.
- a heating block half-shell according to the invention preferably has at least one section in which the partial wall is formed semi-cylindrical, so that therefore a cross-section of the partial wall (perpendicular to a central longitudinal axis of the straight section) forms a semicircle.
- a heating block according to the invention preferably has, between the at least two guide elements, a section in which one half of the wall of the heating channel is semicylindrical or in which the entire wall is shaped cylindrically. In such areas, the liquid flowing through is no guide elements in the way, so that a flow resistance for liquid to be heated is minimal.
- a Schumacherschschale invention and a heating block according to the invention can each be used in a water heater, preferably a household water heater.
- the straight portion of the heating channel is substantially (in particular neglecting the guide elements) cylindrical, so formed rotationally symmetrical about a central longitudinal axis.
- At least three guide elements are arranged on the partial wall in the straight section, of which at least two are arranged to support the heating coil from different sides in the radial direction.
- Such an embodiment allows a fixation of the heating coil in the center of the heating channel from different sides, in which the guide elements only a small Have contact surface with the heating coil.
- An extension of the guide elements in a cross section (orthogonal to the longitudinal axis) of the straight section can therefore be kept small, so that the guide elements mean only a small flow obstacle.
- the at least three guide elements may comprise a pair of guide elements with two guide elements, which are arranged rotated relative to each other substantially about a central longitudinal axis of the straight section.
- the term "pair of guide elements” is to be understood as meaning a pair of guide elements arranged in relation to one another.
- the positions of the two guide elements of a pair of guide elements can be imaged onto one another by a rotation about the central longitudinal axis.
- Attack points of the two guide elements of a pair of guide elements to a heating coil can thus be arranged in a common cross section of the straight portion (orthogonal to its longitudinal axis).
- this embodiment of a heating block half-shell according to the invention allows a heating coil in a heating block formed by joining the heating block half-shell with another heating block half-shell to be encompassed by a plurality of guide elements in the region of the common cross-section and thus fixed particularly well.
- a corresponding angle of rotation between the two guide elements of a pair of guide elements is about 90 ° or about 120 °.
- second heating block half-shell guide elements can be arranged uniformly around a heating coil. This allows a particularly good fixation of the heating coil in the heating channel.
- a Wienblockschschale or a heating block which comprises in the straight section a plurality of guide element pairs as specified above, which are arranged offset from one another in the axial direction.
- a heating block according to the invention comprises a first and a second Schublockschschale, which adjoins (and possibly welded together) and at least comprise a straight portion of the heating channel, wherein the first Schublockschale has at least two mutually axially offset guide element pairs of the type mentioned and second Schublockschale has at least one pair of guide elements, which is arranged in the axial direction between the pairs of guide elements of the first Schublockschreibschale;
- Such a symmetrical shape allows a uniform fixation of the heating coil in the heating channel.
- a heating block according to the invention which has at least four guide elements on the wall, of which at least three are arranged in the axial direction at substantially the same position; these three guide elements are thus axially not offset from each other and arranged at different positions of the Schukanalperipherie.
- the three guide elements can support the heating coil so from three different sides radially.
- the positions of the at least three guide elements can be imaged by rotations about 90 ° or about 120 ° about a central longitudinal axis of the straight section.
- a distance to the center thus becomes gradually smaller in the inwardly directed area and gradually larger in the outwardly directed area.
- at least one guide element seen in the flow direction on one or both sides ie in the cross section of the straight portion along the periphery of the wall) increasingly have the center approaching portions.
- At least one guide member may have a surface formed in the heating channel that is shaped according to an ellipsoid, in particular an ellipsoid of revolution, or a lens (i.e., forms part of a surface of the (rotational) ellipsoid).
- a lens i.e., forms part of a surface of the (rotational) ellipsoid.
- a Wienblockschschale invention is at least partially formed of plastic.
- the plastic serves as electrical insulation, in addition, such Thompsonblockschschalen are cheap and easy to manufacture and can be assembled with at least one other, at least partially molded from plastic Schublockschschale and - welded.
- a heating block according to the invention preferably comprises a housing that is at least partially formed from plastic.
- a preferred embodiment of the present invention relates to a water heater, in particular a household water heater with a SchuBschschale or a heating block according to one of the described embodiments.
- Figure 1 a is a perspective view of a conventional Schumacherschschale with guide ribs
- FIG. 1 b shows a cross section of a straight section of a conventional heating block
- Figure 2 shows a straight portion of a heating channel in an inventive
- FIG. 3 shows a section from FIG. 2
- FIG. 4 shows a heating block according to the invention in a cross section orthogonal to a central longitudinal axis of a straight section of a heating channel.
- FIG. 1 shows a conventional heating block half-shell 100.
- Bankblockschschale forms a partial wall for a heating channel 1 10.
- the heating channel has a straight portion 1 1 1 and a plurality of straight portions not shown in the figure, which are each adapted to receive a heating coil (not shown) at its center.
- guide ribs 120 a, 121 a, 122 a and other, not designated guide ribs are arranged.
- the guide rib 120a extends approximately the full length of the straight portion 1 1 1, and the same applies to the other guide ribs in their respective straight sections.
- the heating block half-shell 100 is assembled with a further heating block half-shell 101, which likewise forms a (in the figure upper) partial wall of the heating channel 110.
- the heater block half-shell 100 (lower in the figure) still has a guide rib 120b besides the guide rib 120a; the heating block half-shell 101 (upper in the figure) comprises guide ribs 120c and 120d.
- the guide ribs support a heating coil 140 in the radial direction. Between the heating coil 140 and the wall of the heating channel interstices 141 a, 141 b, 141 c, 141 d are formed. Due to the formation of the guide ribs occur in these spaces significant flow resistance for flowing, liquid to be heated, which obstructs a uniform flow around the heating coil and thus a uniform heating.
- FIG. 2 shows a straight section of a heating channel 18 in a heating block 10 according to the invention.
- the heating block 10 forms a wall 17 for a heating channel 18, in whose radial center (around a central longitudinal axis L) a heating coil 20 is arranged; for better visibility this heating coil is not shown in cross section, but in a side view.
- guide elements 1 1 a, 12, 15 a and 16 are arranged, which support the heating coil 20 in the radial direction.
- the guide elements 12 and 15a are arranged one behind the other in the axial direction (ie in a direction of the central longitudinal axis L), and the same applies to the guide elements 11a and 16.
- the guide element lies 15a behind the guide member 12, and the guide member 16 is located behind the guide member 1 1 a.
- the guide elements 12 and 16 lie in the illustrated cross section in a plane with the longitudinal axis L;
- the positions of the guide elements 1 1 a and 15 a are arranged rotated about the longitudinal axis, which is indicated by the different representation of the guide elements 1 1 a and 15 a compared to the guide elements 12 and 16 and will be explained in more detail with reference to Figure 4.
- FIG. 3 shows a detail from FIG. 2, with which the design of the guide element 12 is to be described in more detail:
- this guide element comprises a region 21 and a region 22.
- the region 21 is an inwardly directed region. in which a distance to the longitudinal axis L (and thus to the center of the illustrated straight section of the heating channel 18) with the flow direction F gradually becomes smaller.
- the region 22 is an outwardly directed region in which a distance to the longitudinal axis L (and thus to the center of the illustrated straight section of the heating channel 18) with the flow direction F is gradual gets bigger.
- a surface of the guide member 12 in the inward-facing region 21 progressively leads into the interior of the heating channel when following the flow direction F, whereas it leads away from the center with the flow direction in the outward-directed region 22.
- FIG. 4 shows a two straight sections A- ⁇ and A 2 of a heating channel 18 comprehensive part of a heating block 10 according to the invention is shown in a cross section.
- the heating channel has in each case a central longitudinal axis U or L 2 , and the illustrated cross section lies in a plane orthogonal to both longitudinal axes.
- the section A- ⁇ corresponds to the section shown in Figure 2 in a longitudinal section.
- the heating block shown is composed of two Schublockschschalen 10 a and 10 b, which together form a wall 17 for the heating channel 18.
- the illustrated cross-section comprises three guide elements 1 1 a, 1 1 b and 12.
- the guide elements 1 1 a and 1 1 b form in the Schublock Halbschale 10b a pair of guide elements to each other substantially around a central longitudinal axis of the straight section are arranged rotated, whose positions are thus mapped by a rotation about the central longitudinal axis L- ⁇ each other.
- the guide element pair of the guide elements 1 1 a and 1 1 b arranged opposite is in section A- ⁇ the single guide element 12th
- the recognizable in Figure 4 arrangement of the guide elements as a pair of guide elements 1 1 a, 1 1 b and individual guide element 12 illustrates the illustration of Figure 2:
- the guide element 1 1 a is not in both the Longitudinal axis L and the guide element 12 comprehensive level; this plane is the section plane in the representation of FIG. 2.
- the guide elements 15a and 16 in Figure 2 is also clear that these guide elements are arranged analogously to the guide elements 1 1 a and 12, but here is the upper guide element 15a in the illustration part of a pair of guide elements.
- a cross section through the guide elements 15a and 16 would thus be analogous to the cross section shown in Figure 4 for the section A 2 .
- the heating block 10 thus includes in particular two pairs of guide elements, which are arranged offset to one another in the axial direction. As a result, the heating coil can advantageously be effectively fixed in the center of the heating channel.
- Figures 2, 3 and 4 show that the guide elements 1 1 1 a, 1 1 b and 12 both in the longitudinal direction and in the cross section of the straight portion A- ⁇ have rounded surfaces and are streamlined. As a result, flow resistance in the heating channel are minimized, which allows a uniform flow and thus a uniform heating to be heated liquid.
- the guide member 12 has a particularly advantageous surface which coincides with a part of a surface of an ellipsoid.
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)
- Resistance Heating (AREA)
- Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
- General Induction Heating (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015216937.5A DE102015216937A1 (de) | 2015-09-03 | 2015-09-03 | Heizblockhalbschale und Heizblock mit Führungselementen für eine Heizwendel |
PCT/EP2016/069933 WO2017036872A1 (de) | 2015-09-03 | 2016-08-24 | Heizblockhalbschale und heizblock mit führungselementen für eine heizwendel |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3344928A1 true EP3344928A1 (de) | 2018-07-11 |
Family
ID=56852244
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP16759715.2A Withdrawn EP3344928A1 (de) | 2015-09-03 | 2016-08-24 | Heizblockhalbschale und heizblock mit führungselementen für eine heizwendel |
Country Status (5)
Country | Link |
---|---|
US (1) | US10731894B2 (de) |
EP (1) | EP3344928A1 (de) |
JP (1) | JP2018526609A (de) |
DE (1) | DE102015216937A1 (de) |
WO (1) | WO2017036872A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018207113A1 (de) * | 2018-05-08 | 2019-11-14 | Bosch Termotecnologia S.A. | Heizvorrichtung zur Erhitzung eines Fluids |
DE102018207115A1 (de) * | 2018-05-08 | 2019-11-14 | Bosch Termotecnologia S.A. | Heizvorrichtung zur Erhitzung eines Fluids |
EP4310409A1 (de) * | 2022-07-18 | 2024-01-24 | Valeo Systemes Thermiques | Elektrischer flüssigkeitserhitzer |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1893992U (de) * | 1959-07-20 | 1964-06-04 | Licentia Gmbh | Elektrisch beheizter durchlauferhitzer. |
DE1968231U (de) * | 1967-04-28 | 1967-09-14 | Alfred Eckerfeld | Anordnung bei elektrischen durchlauferhitzern. |
DE102011082106A1 (de) * | 2011-09-02 | 2013-03-07 | BSH Bosch und Siemens Hausgeräte GmbH | Heizblock und Durchlauferhitzer |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1091249B (de) * | 1959-03-11 | 1960-10-20 | Licentia Gmbh | Elektrisch beheizter Durchlauferhitzer |
ATA288784A (de) | 1984-09-10 | 1985-12-15 | Vaillant Gmbh | Elektrischer heizkoerper |
JPS63104949U (de) | 1986-12-25 | 1988-07-07 | ||
DE19651079A1 (de) | 1996-12-09 | 1998-06-10 | Bosch Siemens Hausgeraete | Heizblock mit Heizwendeln |
DE19651086B4 (de) * | 1996-12-09 | 2009-06-25 | BSH Bosch und Siemens Hausgeräte GmbH | Heizblock für einen Durchlauferhitzer |
DE19651087C2 (de) * | 1996-12-09 | 2002-06-20 | Bsh Bosch Siemens Hausgeraete | Heizblock mit Gehäuseschalen |
US8168927B2 (en) | 2006-11-10 | 2012-05-01 | Nova Coil, Inc. | Apparatus, arrangement and method for supporting a helical wire coil heating element |
DE102012013348A1 (de) | 2012-07-06 | 2014-01-09 | Stiebel Eltron Gmbh & Co. Kg | Wellenförmige Heizkanäle |
DE102012013342A1 (de) * | 2012-07-06 | 2014-01-09 | Stiebel Eltron Gmbh & Co. Kg | Heizblock |
DE102013212205B4 (de) | 2013-06-26 | 2024-02-08 | Türk & Hillinger GmbH | Verfahren zur Herstellung einer elektrischen Heizpatrone |
-
2015
- 2015-09-03 DE DE102015216937.5A patent/DE102015216937A1/de not_active Withdrawn
-
2016
- 2016-08-24 WO PCT/EP2016/069933 patent/WO2017036872A1/de active Application Filing
- 2016-08-24 EP EP16759715.2A patent/EP3344928A1/de not_active Withdrawn
- 2016-08-24 JP JP2018511642A patent/JP2018526609A/ja active Pending
- 2016-08-24 US US15/751,672 patent/US10731894B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1893992U (de) * | 1959-07-20 | 1964-06-04 | Licentia Gmbh | Elektrisch beheizter durchlauferhitzer. |
DE1968231U (de) * | 1967-04-28 | 1967-09-14 | Alfred Eckerfeld | Anordnung bei elektrischen durchlauferhitzern. |
DE102011082106A1 (de) * | 2011-09-02 | 2013-03-07 | BSH Bosch und Siemens Hausgeräte GmbH | Heizblock und Durchlauferhitzer |
Non-Patent Citations (1)
Title |
---|
See also references of WO2017036872A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2018526609A (ja) | 2018-09-13 |
WO2017036872A1 (de) | 2017-03-09 |
US10731894B2 (en) | 2020-08-04 |
DE102015216937A1 (de) | 2017-03-09 |
US20180238584A1 (en) | 2018-08-23 |
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