Title:
ＣＯ２冷媒を利用した二段膨脹構造を有する多段ヒートポンプおよびその循環方法
Document Type and Number:
Japanese Patent JP6554156
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a multistage heat pump having a two-stage expansion structure using COrefrigerant, and a circulation method thereof.SOLUTION: A multistage heat pump 100 includes a compressor 110, a condenser 120, a gas-liquid separator 150, an expander and an evaporator 160, and has a two-stage expansion structure, wherein a first expansion device 140 is formed between the condenser 120 and the gas-liquid separator 150, which is configured to reduce pressure of refrigerant having passed through the condenser 120. The multistage heat pump 100 is configured to execute a two-stage expansion process of causing the first expansion device 140 to expand refrigerant from a high-pressure state to an intermediate pressure state, and causing an expansion device 142 to expand the refrigerant from the intermediate state to a low-pressure state.SELECTED DRAWING: Figure 1
Inventors:
Yun Sang Guk
Application Number:
JP2017215195A
Publication Date:
July 31, 2019
Filing Date:
November 08, 2017
Export Citation:
Assignee:
KOREA MARITIME UNIVERSITY INDUSTRY-ACADEMIC COOPERATION FOUNDATION
International Classes:
F25B30/02; F25B1/00; F25B41/06; F25B43/00
Domestic Patent References:
| JP2010071643A | ||||
| JP10332212A | ||||
| JP2006177597A | ||||
| JP1314857A | ||||
| JP2003172523A | ||||
| JP2004053179A | ||||
| JP2012077984A | ||||
| JP2016169906A | ||||
| JP2007093105A | ||||
| JP51103754U |
Foreign References:
| WO2009147826A1 | ||||
| US20050150248 |
Attorney, Agent or Firm:
Takahashi Hayashi & Partners