STEAM HEATING DEVICE

• US 3,814,901 A
• Filed: 05/07/1973
• Issued: 06/04/1974
• Est. Priority Date: 05/07/1973
• Status: Expired due to Term

• Current Assignee: LIncorporatedoln Foodservice Products Incorporated (Ali Holding Srl)
• Original Assignee: George J. Morhack
• Inventors: Morhack, George J.
• Primary Examiner(s): Mayewsky, Volodymyr Y.
• Application Number:
  US05/358,149
• Time in Patent Office: 393 Days
• Field of Search: 219/271,362,401,431,440,521 21/94,95,98 99/467,337,473 126/369,369.1,20
• US Class Current: 219/401
• CPC Class Codes: A47J 27/04 for cooking food in steam; Devices for extracting fruit juice by means of steam ; Vacuum cooking vessels steam-heated vessels for hotels, restaurants or canteens A47J27/16
• CPC Class Codes: F22B 1/287 with water in sprays or in films
• CPC Class Codes: F24C 7/006 using electrically heated liquids

Abstract

A steam heating device in which a compartment is provided closed on the top by a tiltable cover or lid. A member forming the lower side of the compartment has apertures therein and a steam generating means is provided underneath the member forming the lower side of the compartment for the supply of steam through the apertures thereof into the compartment to heat foodstuffs and the like that are placed in the compartment and enclosed by lowering the lid or cover thereover.

Claims

1. A steam heating device for heating foodstuff;

a frame, a horizontal first plate in the top of the frame and a cover pivotally mounted on top of the frame, said first plate and cover forming therebetween a compartment for receiving foodstuff to be heated, a heater plate beneath said first plate and having electrically insulated electric heating means therein, a cover plate beneath the heater plate, means securing said plates together in peripherally sealed relation, first chamber means formed between said cover plate and heater plate, second chamber means formed between said heater plate and said first plate, holes in said heater plate leading from said first chamber means to said second chamber means and holes in said first plate leading from said second chamber means to said compartment, nozzle means mounted in said cover plate for the introduction of water into said first chamber means, a conduit having one end connected to said nozzle means and at the other end adapted for connection to a source of water under pressure, normally closed valve means in said conduit, and electrically operated control means operable automatically for periodically aCtuating said valve means into open position for a predetermined period of time.

2. The device according to claim 1 in which means is provided for supplying electrical energy to said control means during the period of energization of said electric heating means.

3. The device according to claim 1 which includes filter means in said conduit through which the water passes operable to treat the water to reduce the solids precipitated therefrom when the water is heated.

4. The device according to claim 1 in which said nozzle means is formed of a nonmetallic material.

5. The device according to claim 4 in which said material is selected from the class of fluorocarbons which includes polytetrafluoroethylene.

6. The device according to claim 1 which includes a baffle plate clamped between the bottom of said first plate and the top of said heater plate and dividing said second chamber means into upper and lower chamber portions, and check valve means interconnecting said chamber portions and opening toward the upper one thereof.

7. The device according to claim 6 in which said baffle plate has a hole near one edge thereof, a downwardly opening recess in said first plate into which said hole opens at the top, a passage from said recess to said upper chamber portion, and a ball in said recess engageable with the upper end of said hole.

8. The device according to claim 1 in which the upper side of said first plate is recessed, and a tray having a peripheral flange engaging the top of said first plate around said recess and having a perforated bottom wall parallel to the upwardly facing bottom wall of said recess.

9. The device according to claim 1 which includes solenoid means energizable for opening said valve means, said control means including time controlled means operable to effect energization of said solenoid means at periodic intervals.

10. The device according to claim 1 in which said nozzle means is directed angularly upwardly toward the bottom of said heater plate and comprises a small outlet opening whereby water supplied to said conduit by said nozzle means is broken up into droplets and impinges directly on said heater plate.

11. The device according to claim 1 which includes filter means in said conduit through which the water passes operable to treat the water to reduce the solids precipitated therefrom when the water is heated, said filter means comprising magnetic field means through which the water flows, said nozzle means being formed of a nonmetallic material.

12. The device according to claim 1 which includes filter means in said conduit through which the water passes operable to treat the water to reduce the solids precipitated therefrom when the water is heated, said filter means comprising magnetic field means through which the water flows, said nozzle means being formed of polytetrafluoroethylene.