[54] TEMPERATURE CONTROL METHOD FOR A HEATING/COOLING SYSTEM
[75] Inventors: Byung-Joo Ryu, Kunpo; Yun-Bong Chun, Seoul, both of Rep. of Korea
[73] Assignee: SamSung Electronics Co., Ltd.,
Suwon, Rep. of Korea
[21] Appl. No.: 561,192
[22] Filed: Nov. 21, 1995
Related U.S. Application Data
[63] Continuation-in-part of Ser. No. 793,462, Nov. 18, 1991, abandoned.
[30] Foreign Application Priority Data
Nov. 24, 1990 [KR] Rep. of Korea 19140/1990
[51] Int. CI.6 F25B 29/00
[52] U.S. CI 165/254; 165/259; 236/78 D;
236/11; 364/162
[58] Field of Search 165/254, 259,
165/42, 43; 236/78 D, 11; 364/192
[56] References Cited
U.S. PATENT DOCUMENTS
3,826,305 7/1974 Fishman 165/259
4,466,480 8/1984 Ito et al 165/43
4^485,863 12/1984 Yoshida et al 165/42
4,487,254 12/1984 Hayashibara 165/42
4,498,309 2/1985 Kobayashi et al 165/43
4,697,430 10/1987 Toyoda et al 236/91 C
4,744,511 5/1988 Kakehi et al 165/42
4,991,770 2/1991 Bird et al 236/78 D
FOREIGN PATENT DOCUMENTS
0425454 5/1991 European Pat. Off 236/78 D
0068548 5/1980 Japan 236/11
OTHER PUBLICATIONS
Operator Convenience is Key as Process Controllers Evolve
Henry A. Morris, Control Engineering, Mar. 1981.
Writing P-I-D. Control Loops Easily in Basic, Control
Engineering, James Fishbeck, vol. 25 No. 10 Oct. 1978.
Primary Examiner—-John K. Ford
Attorney, Agent, or Firm—Robert E. Bushnell, Esq.
[57] ABSTRACT
A temperature control method and apparatus therefor controls an air temperature in a room by determining an error temperature between a set temperature and an actual room temperature. An auxiliary reference calorie is initially set as a previous state calorie value, an error calorie associated with the detected error temperature is determined by PID operation and a current calorie value in determined by adding or subtracting the previous state calorie value to/from error calorie, and the room temperature is brought to the set temperature using the current calorie value.
9 Claims, 5 Drawing Sheets
