REFRIGERATION DEVICE

PROBLEM TO BE SOLVED: To solve problems in reduction of usage of chlorofluorocarbon in a refrigeration device that a proper refrigerant in place of chlorofluorocarbon has not been provided, remarkable usage of carbon dioxide requires high pressure of 5.0-7.0 MPa in condensing carbon dioxide under a...

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Main Author MATSUSHITA HIROAKI
Format Patent
LanguageEnglish
Japanese
Published 10.08.2017
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Abstract PROBLEM TO BE SOLVED: To solve problems in reduction of usage of chlorofluorocarbon in a refrigeration device that a proper refrigerant in place of chlorofluorocarbon has not been provided, remarkable usage of carbon dioxide requires high pressure of 5.0-7.0 MPa in condensing carbon dioxide under a normal temperature, a general-purpose refrigerating machine is intolerable to the usage, and heat source necessary for cooling is hardly secured for the sake of a mechanism of a refrigeration cycle.SOLUTION: In a refrigeration device in which condensing heat source of a mixed refrigerant introduced to an evaporator is a return refrigerant of low temperature passing through a cascade, the mixed refrigerant is prepared by mixing carbon dioxide and natural refrigerant (propane) condensed and liquefied in a normal temperature region or a fluorocarbon refrigerant, and the fluorocarbon refrigerant is hydrofluorocarbon (HFC).SELECTED DRAWING: Figure 1 【課題】 冷凍装置にあって、フロンの使用量の削減するについて、それに代わる良好な冷媒の提供がなく、注目される二酸化炭素の使用は、二酸化炭素を常温凝縮しようとすると、5.0〜7.0MPaの高圧が必要となり、汎用の冷凍機では使用に耐えられず、冷却するにしてもその必要な熱源の確保は、冷凍サイクルの機構上困難であったという点である。【解決手段】 蒸発器へ導入される混合冷媒の凝縮熱源をカスケードを通過する低温の戻り冷媒によって行う冷凍装置であって、前記した混合冷媒が二酸化炭素と、常温域で凝縮液化する自然冷媒(プロパン)あるいはフロン系冷媒を混合したものであることとし、前記したフロン系冷媒はハイドロフルオロカーボン(HFC)であることとする。【選択図】 図1
AbstractList PROBLEM TO BE SOLVED: To solve problems in reduction of usage of chlorofluorocarbon in a refrigeration device that a proper refrigerant in place of chlorofluorocarbon has not been provided, remarkable usage of carbon dioxide requires high pressure of 5.0-7.0 MPa in condensing carbon dioxide under a normal temperature, a general-purpose refrigerating machine is intolerable to the usage, and heat source necessary for cooling is hardly secured for the sake of a mechanism of a refrigeration cycle.SOLUTION: In a refrigeration device in which condensing heat source of a mixed refrigerant introduced to an evaporator is a return refrigerant of low temperature passing through a cascade, the mixed refrigerant is prepared by mixing carbon dioxide and natural refrigerant (propane) condensed and liquefied in a normal temperature region or a fluorocarbon refrigerant, and the fluorocarbon refrigerant is hydrofluorocarbon (HFC).SELECTED DRAWING: Figure 1 【課題】 冷凍装置にあって、フロンの使用量の削減するについて、それに代わる良好な冷媒の提供がなく、注目される二酸化炭素の使用は、二酸化炭素を常温凝縮しようとすると、5.0〜7.0MPaの高圧が必要となり、汎用の冷凍機では使用に耐えられず、冷却するにしてもその必要な熱源の確保は、冷凍サイクルの機構上困難であったという点である。【解決手段】 蒸発器へ導入される混合冷媒の凝縮熱源をカスケードを通過する低温の戻り冷媒によって行う冷凍装置であって、前記した混合冷媒が二酸化炭素と、常温域で凝縮液化する自然冷媒(プロパン)あるいはフロン系冷媒を混合したものであることとし、前記したフロン系冷媒はハイドロフルオロカーボン(HFC)であることとする。【選択図】 図1
Author MATSUSHITA HIROAKI
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Snippet PROBLEM TO BE SOLVED: To solve problems in reduction of usage of chlorofluorocarbon in a refrigeration device that a proper refrigerant in place of...
SourceID epo
SourceType Open Access Repository
SubjectTerms BLASTING
COMBINED HEATING AND REFRIGERATION SYSTEMS
HEAT PUMP SYSTEMS
HEATING
LIGHTING
LIQUEFACTION SOLIDIFICATION OF GASES
MANUFACTURE OR STORAGE OF ICE
MECHANICAL ENGINEERING
REFRIGERATION MACHINES, PLANTS OR SYSTEMS
REFRIGERATION OR COOLING
WEAPONS
Title REFRIGERATION DEVICE
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