Heating apparatus with programmable timer

• US 4,410,795 A
• Filed: 02/03/1982
• Issued: 10/18/1983
• Est. Priority Date: 05/15/1979
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Ueda, Shigeki
• Primary Examiner(s): PASCHALL, MARK H
• Application Number:
  US06/345,375
• Time in Patent Office: 622 Days
• Field of Search: 219/492, 219/493, 219/498, 219/506, 219/508-510, 219/10.55 B, 364/900, 364/705, 340/711
• US Class Current: 219/492
• CPC Class Codes: G05B 19/108 characterised by physical layout of switches; switches co-operating with display; use of switches in a special way
• CPC Class Codes: G05D 23/1917 using digital means

Abstract

A heating apparatus, or more particularly a heating-time displaying means which is applicable for a heating apparatus with a programmable timer which is capable of controlling the sequence heating. The heating apparatus comprises heating sources such as magnetron and/or heater for heating a product to be heated, output switching means for switching the output of said heating source into at least two steps, output setting means for presetting the output specified by said output switching means, timer means for controlling the heating time, heating time setting means for presetting the heating time to said timer means, a memory for storing the output and heating time entered by said output setting means and said heat time setting means, display means for displaying the entered output and heating time, and a main controller for controlling said heating source and said memory and all of said means, and stage recall means for recalling the heating pattern of a selected stage. The main controller has a function of calculating the total heating time of sequence heating so that either the total heating time or the heating time of each stage is indicated on the display means in accordance with a command from said stage recall means.

Claims

1. Apparatus including a programmable timer to control a heating sequence for heating a product in stages, each stage having a selected heating level and heating time comprising:

at least one heating source for heating said product, the output of said heating source being switchable between at least two heating levels;

output setting means for selecting one of said heating levels;

timer means for controlling the heating time at said selected level;

heating time setting means for setting said timer means to provide heating at said selected level for a selected heating time;

memory means for storing said selected heating level and heating time comprising said heating sequence;

display means for displaying said selected heating level and heating time;

stage recall means with independent input means for selectively displaying the heating time of each of said stages at any time;

a main controller for controlling said heating source and each of said aforesaid means, said main controller continuously storing in said memory means the heating sequences selected for at least two of said stages and correcting the display recalled by said stage recall means from said memory and indicated on said display means when a new heating level and heating time are inputted into said apparatus by resetting said output setting means and said heating time setting means; and

clearing means for clearing the contents of said memory means, actuation of said clear key during operation of said stage recall means causing said main controller to clear only the contents of the corresponding stage in said memory means and reediting said heating sequence.