DE1975794U - ELECTRIC RUNNING HEATER. - Google Patents

Description

PVA 278/61

Electric water heater

The firing refers to an electric water heater, with an externally heated, water-carrying coiled pipe, on the outer wall of which electric heating elements parallel to the pipe core preferably between the turns of the coil with good thermal contact lying to the water pipe.

It is the task of the innovation to create a water heater that using coiled, preferably round tubular heating elements and water pipes, has a simple structure and good efficiency.

According to the innovation, this is done by having electrical on the water pipe Tubular heating elements are soldered or welded on.

There are numerous advantages for the specified design. Is Let's achieve a very compact structure, it doesn't just look thanks to its space-saving. Shape, but also characterized by high mechanical strength and torsional stiffness.

Next are through the close metallic connection that see through the soldering or welding of the water pipe and tubular heating element results in excellent heat transfer conditions to the water pipe, because the cavities at the contact surfaces of tubular heating element and water pipe are filled with solder or the like. It has see shown that in this way they see very balanced thermal

- 1 - Hg / sm

25.8.67

PYA 278/61

Result in conditions and, above all, avoided so-called hot spots are. Based on the figures, exemplary embodiments of the invention are presented and their mode of operation explained.

Pig. 1 and 2 show different pipe cross-sections with the applied Tubular heater η unrolled in running length.

The RLg, 3 shows a water heater with water pipes of different Cross-sections that work according to the counterpart principle *.

Pig.4 shows a water heater in which, according to another Characteristic of the furnace, the water pipe is wiggled without a gap, so that it forms a closed helix. The tubular heating elements are parallel IeI wound to the water pipe and soldered or welded to it

Pig. 5 shows a water heater according to FIG. 2 in spiral form an inlet pipe applied.

Pig.6 shows a water heater in which the pipe arrangement according to Pig.3 is shaped into a helix. The tubular heating elements are also located between the water pipes. The inner water pipe lies with its narrow sides on top of each other.

On a round water pipe 1 or flat water pipe 5 or 6 and are the tubular heating elements 2, 3 and 4 with their connections 11, 12 through Soldering or welding applied. The water enters the water heater at the connection piece 13 in order to pass it through the connection piece 14 to leave. With the "transition piece 10, the pipes 6 and 7 of different cross-sections connected.

- 2 - Hg / sm

25.8.67

PVA 278/61

The mode of operation of the water heater according to the innovation is based on of the figures can be seen without further explanations. By using a larger cross-section in the cold water supply, e.g. Ilaehrohr 7, or pipe 8, when the water flow and the electrical energy are switched off, the residual heat of the tubular heating elements 2, 3 and 4 can be easily picked up. In the case of multi-phase operation, it is advisable to assign a tubular heating element to each phase.

Of course, the most varied cross-sectional shapes can be used for the water pipe and the tubular heating element, especially profile pipes. Likewise, the tubular heating elements can only be used in all of them Ren positions be applied to the metal pipe.

With the instantaneous water heater according to the invention, good heat transfer properties are obtained from the tubular heater to the water pipe with the best mechanical strength at the same time. The water heater can be easily adapted to all space requirements. In particular, can It can be easily assembled with a pressure switch and overheating protection to form a complete instantaneous water heater with a small volume will.

6 figures

7 protection requirements

- 3 - Hg / sm

25.8.67

Claims (1)

RA. 497 357 * 8/29/67 PVA 278/61 Protection claims 1) Electric water heater, with an externally heated, the Water-carrying, coiled pipe, on the outer wall of which electrical Radiators are parallel to the pipe core, preferably between the turns of the helix with good thermal contact to the water pipe, characterized in that electrical tubular heating elements are soldered or welded onto the water pipe are. 2) water heater according to claim 1, characterized in that in multi-phase operation for each phase in a known Way a tubular heating element is provided » 3) water heater according to claim 1, characterized z e i chne t that as a water pipe a profile pipe in llaehrund-, Ellipse, or semicircular shape is used. 4) water heater according to claim 1, characterized in that that the water pipe is shaped into a closed helix. 5) water heater according to claim 1 to 4, characterized in that that the helix formed from the water pipe on a pipe forming the water inlet, preferably larger Cross-section is applied. - 1 - Hg / sm 25.8.67 PVA 278/61 6) water heater according to claim 5, characterized in that that cold water is fed through the water pipe with the larger cross-section. 7)! Continuous heater according to claim 1 to 6, characterized in that that in a known manner a pressure switch and an overheating protection device built into the device is. Note: This document (description and Schuta?; Rpr.) Is the supply document submitted; sis deviates from the ritsriagsn off. Piv riuWüoho B ^ -imn; d'r /.·-*·=■: ·; -. «-, -; <:, <, - ₍ ; -: - i - _; -> -.- räit. η L>%. ij: vJd! 3 sic> in '--n λ.γ-, γ'ϊοΙα'Λ. h '. * ·. "■ v-.i .. - .-. · -.- ■: ■ <.ji ,, vi! E; ...; vx.iit» ioi; tü Intjresses gfaböhrenfrei utigeuehsri become. AJi A »: *>ov> ^« ei:.; ^: ..- vc: i oucn, -u, - · ■■ ;..; .. · ι vc · ^ i- ^; i! M DsuisciniS Potetitarnt, Usage parts. - 2 - Hg / sm 25.8.67