ELECTRICALLY HEATED WATER OUTLETS

• US 3,816,687 A
• Filed: 01/31/1973
• Issued: 06/11/1974
• Est. Priority Date: 02/03/1972
• Status: Expired due to Term

• Current Assignee: Alfred Heitner
• Original Assignee: Alfred Heitner
• Inventors: Heitner, Alfred
• Primary Examiner(s): Mayewsky, Volodymyr Y.
• Application Number:
  US05/328,287
• Time in Patent Office: 496 Days
• Field of Search: 13/26,27,29 219/6.5,10.49,10.57,10.75,10.79,424,426,438,521,535 222/460
• US Class Current: 219/630
• CPC Class Codes: E03F 5/0407 Floor drains for indoor use
• CPC Class Codes: E04D 13/0409 Drainage outlets, e.g. gullies
• CPC Class Codes: E04D 2013/0418 with de-icing devices or snow melters
• CPC Class Codes: H01F 27/022 Encapsulation
• CPC Class Codes: H01F 27/06 Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type
• CPC Class Codes: H01F 27/402 Association of measuring or protective means
• CPC Class Codes: H05B 3/00 Ohmic-resistance heating

Abstract

A heated water outlet having a tubular wall incorporating an electrical heater to prevent freezing of water in the outlet. The heater is supplied with low-tension voltage from a transformer which is disposed within or on the outlet wall. The heater can be in the form of a metal strip which may at least partially form the internal surface of the annular wall of the outlet. The outlet can be used for flat roofs, terraces, depot floors or like surfaces requiring draining.

Claims

1. A heated water outlet comprising a generally tubular wall and an inlet and spaced outlet through which the water passes, said outlet wall being at least partly comprised of heat-insulated material, electrical heating means in the form of a metal strip positioned adjacent the inner surface of said outlet wall in said outlet wall for transferring heat directly to water flowing through said outlet, a protective transformer mounted on said wall, said transformer including a core and a primary winding around said core, said primary winding having leads for connection to a power source, said electrical heating means being formed with a loop portion which extends outwardly from the surface of said wall defining said outlet, said loop portion extending in spaced relation around a portion of said core and comprising the transformer secondary thereby electrically and operatively connecting said heating means to said transformer, and electric insulation means continually spacing said loop portion from the portion of said core disposed therewithin, said electric heating means including said loop portion being enclosed by electric insulation throughout its entire extent.

2. The outlet of claim 1 wherein the inner periphery of said outlet wall is formed with an annular groove, and said electrical heating means is disposed in said groove whereby the interior surface of said electrical heating means forms a continuous flow surface with the surfaces of said wall above and below said electrical heating means.

3. The outlet of claim 1 wherein said electrical heating means includes a main annular section within said wall and said loop portion of said electrical heating means is electrically connected by arcuate branch lines to said main annular section of said electrical heating means at diametrically opposed regions thereof, whereby branching of the current occurs at such regions.

4. A heated water outlet comprising a generally tubular wall and an inlet and spaced outlet through which the water passes, said outlet wall being at least partly comprised of heat-insulated material, electrical heating means in the form of a metal strip embedded in said outlet wall for transferring heat to water flowing through said outlet, a protective transformer embedded in said wall, said transformer including a core and a primary winding around said core, said primary winding having leads for connection to a power source, said electrical heating means being formed with a loop portion which extends outwardly from the surface of said wall defining said outlet, said loop portion extending in spaced relation around a portion of said core and comprising the transformer secondary thereby electrically and operatively connecting said heating means to said transformer, and electric insulation means continually spacing said loop portion from the portion of said core disposed therewithin, said electric heating means including said loop portion being enclosed by electric insulation throughout its entire extent.