| Title |
An Analysis of the Control and Defrost Patents for Heat Pump |
| Authors |
최종민 ; 심윤희 ; 이상혁 ; 이재훈 ; 이진욱 ; 박성룡 ; 김용찬 ; 윤준상 |
| Keywords |
Heat pump ; 열펌프 ; Patent ; 특허 ; Defrosting ; 제상 ; Control ; 제어 |
| Abstract |
A technical analysis was conducted to predict the development trend for heat pump system. The study was based on a submitted patent from 1983 to 2002 in Korea, U.S.A. and Japan. The total number of raw data from the registered database was 19,261 and the obtained data to be analyzed through the filtering process was 5,143.Technical development of compression type heat pump was more dominant than the other types, absorption, adsorption, and chemical heat pump. The patents for compression type made up over 80% in each country. Most of patents were developed for the defrosting and con-trolling technology of the compression type heat pump system. Approximately 24% and 62% of the patents about compression type heat pump were for defrosting and control technologies, respectively. |