Refrigerant heater

Abstract

Abstract PURPOSE:To provide a system which prevents thermal decomposition of a refrigerant through maintenance of uniform circulation of a refrigerant and improve reliability by a method wherein an oil rain pipe is installed to the bottom of the refrigerant passage of a refrigerant passage member and the direction of the flow of high temperature gas of a high temperature gas passage is caused to coincide with that of the refrigerant of a refrigerant passage member. CONSTITUTION:Oil of a compressor is always dissolved in a refrigerant and when the refrigerant is gasified by a heater, oil is gradually gathered. When quantities of oil is gathered, gasification and circulation of the refrigerant are blocked because of viscosity and low heat conduction. Since a collection pipe 17a connected to an inlet header 16 of the bottom part of a refrigerant passage 15 of a refrigerant passage member 10 is bent downward and an oil drain pipe 21 is installed, when oil is gathered, the oil is drained through the oil drain pipe together with the refrigerant, and the oil can be reliably removed from the heater. This constitution provides a system which prevents thermal decomposition of a refrigerant due to local overheat through maintenance of uniform circulation of the refrigerant and improves reliability.

Inventors

• 👤 Katsuzo Konakawa
• 👤 勝蔵 粉川
• 👤 Mikio Itazawa
• 👤 板沢　幹雄
• 👤 Tadashi Mukai
• 👤 向井　正
• 👤 Koji Oshitani
• 👤 押谷　孝司

Bibliographic Details