Cooking appliance with several electric cooking zones

• US 4,217,481 A
• Filed: 08/31/1978
• Issued: 08/12/1980
• Est. Priority Date: 09/03/1977
• Status: Expired due to Term

• Current Assignee: Karl Fischer
• Original Assignee: Karl Fischer
• Inventors: Fischer, Karl
• Primary Examiner(s): Envall, Jr., Roy N.
• Assistant Examiner(s): Roskoski, Bernard
• Application Number:
  US05/938,747
• Time in Patent Office: 712 Days
• Field of Search: 219/445-447, 219/449, 219/450, 219/455, 219/458, 219/460, 219/461, 219/463-467, 219/472, 219/476-480, 219/394, 219/218, 236/20 A, 236/21 B, 236/32
• US Class Current: 219/448.15
• CPC Class Codes: F24C 15/105 Constructive details concerning the regulation of the temperature
• CPC Class Codes: H05B 1/0266 Cooktops
• CPC Class Codes: H05B 2213/05 Heating plates with pan detection means
• CPC Class Codes: H05B 2213/07 Heating plates with temperature control means
• CPC Class Codes: H05B 3/68 Heating arrangements specially adapted for cooking plates or analogous hot-plates

Abstract

A surface-unit cooking appliance comprising a plurality of electric hot plates of the same type, each of the hot plates having a temperature regulator and each of the regulators having a temperature sensor for sensing the temperature of a cooking vessel or a product being cooked, at least one of the hot plates being disposed in each of first and second surface cooking zones, the first zone being designed for boiling water-containing media, the at least one temperature regulator therein being designed and constructed with a temperature control range limited to a maximum temperature of 150° C. (300° F.) at the temperature sensor, and the second zone being designed for roasting, the at least one temperature regulator therein being designed and constructed with a temperature control range limited to a maximum temperature above 220° C. (430° F.) at the temperature sensor.

Claims

1. A surface-unit cooking appliance comprising a plurality of electric hot plates of the same type, each of the hot plates having a temperature regulator and each of the regulators having a temperature sensor for sensing the temperature of a cooking vessel or a product being cooked, at least one of the hot plates being disposed in each of first and second surface cooking zones, the first zone being designed for boiling water-containing media, the at least one temperature regulator in the first zone being designed and constructed with a temperature control range limited to a maximum temperature of 150°

C. at the temperature sensor, and the second zone being designed for roasting, the at least one temperature regulator in the second zone being designed and constructed with a temperature control range limited to a maximum temperature above 220°

C. at the temperature sensor.

2. A cooking appliance according to claim 1, wherein the temperature sensors are filled with an expansion liquid, and wherein, for otherwise identical regulator construction for the two zones, the volume of each boiling zone temperature sensor is larger than the volume of each roasting zone sensor.

3. A cooking appliance according to claims 1 or 2, wherein the control range of each roasting zone regulator is 80°

to 250°

C. and the control range of each boiling zone regulator is 40°

to 140°

C.

4. A cooking appliance according to claim 1, wherein the boiling zone is located in that part of the appliance providing easiest accessibility for a user.