DE317534C - - Google Patents
Info
- Publication number
- DE317534C DE317534C DE1916317534D DE317534DA DE317534C DE 317534 C DE317534 C DE 317534C DE 1916317534 D DE1916317534 D DE 1916317534D DE 317534D A DE317534D A DE 317534DA DE 317534 C DE317534 C DE 317534C
- Authority
- DE
- Germany
- Prior art keywords
- tube
- liquid
- spiral tube
- heating
- contact
- 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
Links
- 238000010438 heat treatment Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 14
- 238000001816 cooling Methods 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 2
- 241000220450 Cajanus cajan Species 0.000 claims 1
- 235000014277 Clidemia hirta Nutrition 0.000 claims 1
- 240000002694 Clidemia hirta Species 0.000 claims 1
- 238000009835 boiling Methods 0.000 claims 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 238000005485 electric heating Methods 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 210000003298 Dental Enamel Anatomy 0.000 description 1
- 239000010425 asbestos Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 238000004904 shortening 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
- F24H1/12—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
- F24H1/14—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 by tubes, e.g. bent in serpentine form
- F24H1/142—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 by tubes, e.g. bent in serpentine form using electric energy supply
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)
Description
Es sind elektrische Lufterhitzer in Form' eines Spiralrohres bekannt, bei denen der Heizdraht in die Windungen des Spiralrohres aufgenomftien und das Rohr an der offenen Seite durch ein Rohr abgedeckt ist.There are known electrical air heaters in the form of a spiral pipe, in which the heating wire in the turns of the spiral tube and the tube on the open side is covered by a pipe.
Diese Apparate haben nur eine geringe Lebensdauer, weil auf der Oberfläche der Spiralwindungen keine ausreichende Wärmeabgabe erfolgt. Der Apparat erhitzt sich ίο schnell und der Heizdraht wird bald zerstört.These devices only have a short lifespan because of the surface of the Spiral windings do not give off sufficient heat. The apparatus heats up ίο quickly and the heating wire will soon be destroyed.
Dieser Nachteil fällt fort' bei Verwendung
der geschilderten Vorrichtung zur Erhitzung strömender Flüssigkeit, wenn die Berührung
der zu erwärmenden Flüssigkeit mit dem Heizkörper sowohl auf der Fläche der den Heizdraht enthaltenden Windungen als auch
auf der Fläche des Mantelrohres erfolgt. Durch diese Anordnung ist eine überaus kräftige
Wärmeübertragung ermöglicht, die eine erheb-. 20 liehe Erhitzung der Drähte verhindert und
daher die Haltbarkeit des Apparates erhöht.
1 Bei Verwendung einer Flüssigkeit zum Schutz der Heizwiderstände in dem Spiralrohr
wird ferner gemäß der Erfindung die beim Betriebe des Apparates durch die Erwärmung
eintretende Volumenvergrößerung der Flüssigkeit und die bei der Abkühlung erfolgende
Volumenverkleincrung von dem elastischen Spiralrohr· aufgenommen. Zugleich wird
dabei eine selbsttätige Regulierung der Stromzufuhr bewirkt.This disadvantage does not apply when using the described device for heating flowing liquid when the contact of the liquid to be heated with the heating element occurs both on the surface of the coils containing the heating wire and on the surface of the jacket pipe. This arrangement enables an extremely powerful heat transfer, which is significant. 20 borrowed heating of the wires is prevented and therefore increases the durability of the apparatus.
1 If a liquid is used to protect the heating resistors in the spiral tube, according to the invention, the increase in volume of the liquid caused by the heating during operation of the apparatus and the decrease in volume that occurs during cooling are absorbed by the elastic spiral tube. At the same time, an automatic regulation of the power supply is effected.
Es ist zwar bei Heizapparaten einerseits bekannt, Volumenänderungen des Öles durch eine elastische Umhüllung aufzunehmen und anderseits die . Ausdehnung und Zusammenziehung von öl zur Regelung der Stromzufuhr zu benutzen. Im vorliegenden Falle aber werden an einem spiralrohrförmigen Heizkörper die durch Volumenänderung des Öles hervorgerufenen Verlängerungen und Verkürzungen der Rohrwandung zur Stromregulicrung benutzt.It is on the one hand known in heating devices that volume changes of the oil are caused by take up an elastic envelope and on the other hand the. Expansion and contraction of oil to regulate the power supply. In the present case, however are on a spiral tube-shaped radiator by changing the volume of the oil caused extensions and shortening of the pipe wall for flow regulation used.
Der Heizkörper ist in den Zeichnungen (Fig. ι und 2) beispielsweise in zwei Ausführungsformen dargestellt, während Fig. 3 eine automatisch wirkcndeAusschaltvorrichtung zeigt. ■ 'The radiator is in the drawings (Fig. Ι and 2), for example, in two embodiments while Fig. 3 shows an automatically operating disconnection device. ■ '
Die Heizwiderstände w sind in den Windungen s des Spiralrohres r untergebracht; an der offenen Seite der deli Heizdraht aufnehmenden Windungen, d. h. also an der Innenseite, ist das Rohr ;· durch das glatte Rohr m abgedeckt. Die zu erwärmende Flüssigkeit zirkuliert an den Windungen s und dem Deckrohr m. Dadurch, daß die Heizdrähte in den nach außen hin unabgedeckten Windungen s liegen, findet eine direkte, schnelle Wärme 'übertragung statt, durch die eine starke Erhitzung der Heizdrähte vermieden ist. Die Isolierung des Heizkörpers ist für die Anordnung nicht wesentlich. Sie kann sich entweder auf dem Spiralrohr s befinden als nichtleitender Überzug, z. B. als Emailschicht, oder ' die Widerstände können als solche selbst gegenüber dein Rohre: isoliert sein, z. B. durch Umwickeln mit Asbest.The heating resistors w are housed in the turns s of the spiral tube r; the tube is on the open side of the turns receiving the heating wire, ie on the inside; · covered by the smooth tube m . The liquid to be heated circulates on the turns s and the cover tube m. Because the heating wires are in the turns s which are not covered on the outside, a direct, rapid heat transfer takes place, which avoids excessive heating of the heating wires. The insulation of the radiator is not essential for the arrangement. It can either be on the spiral tube s as a non-conductive coating, e.g. B. as an enamel layer, or 'the resistors can be insulated as such against your pipes: z. B. by wrapping with asbestos.
Fig. 2 zeigt ein Ausfiilirungsbeispiel, in dem die Widerstände iv von außen in die spiral-Fig. 2 shows an exemplary embodiment in which the resistors iv from the outside into the spiral
Claims (2)
Publications (1)
Publication Number | Publication Date |
---|---|
DE317534C true DE317534C (en) | 1919-12-19 |
Family
ID=84102488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1916317534D Expired DE317534C (en) | 1916-01-21 |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE317534C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1286281B (en) * | 1963-06-04 | 1969-01-02 | Licentia Gmbh | Electric heating device for a water heater |
DE3221348A1 (en) * | 1982-06-05 | 1983-12-08 | E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen | Heating element with cylindrical wall |
DE3249924C2 (en) * | 1982-06-05 | 1989-03-23 | E.G.O. Elektro-Geraete Blanc U. Fischer, 7519 Oberderdingen, De | Heating element with cylindrical wall |
WO2020239271A1 (en) * | 2019-05-31 | 2020-12-03 | Valeo Thermal Commercial Vehicles Germany GmbH | Electric heating device |
-
1916
- 1916-01-21 DE DE1916317534D patent/DE317534C/de not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1286281B (en) * | 1963-06-04 | 1969-01-02 | Licentia Gmbh | Electric heating device for a water heater |
DE3221348A1 (en) * | 1982-06-05 | 1983-12-08 | E.G.O. Elektro-Geräte Blanc u. Fischer, 7519 Oberderdingen | Heating element with cylindrical wall |
DE3249924C2 (en) * | 1982-06-05 | 1989-03-23 | E.G.O. Elektro-Geraete Blanc U. Fischer, 7519 Oberderdingen, De | Heating element with cylindrical wall |
WO2020239271A1 (en) * | 2019-05-31 | 2020-12-03 | Valeo Thermal Commercial Vehicles Germany GmbH | Electric heating device |
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