Daikin Industries, Ltd.

Katsuhiro Kawabata

Hiroyuki Yamashita

Masato Utsumi

Noriyuki Okuda

Kouichi Yasuo

Isao Hasegawa

Fumiaki Yakushiji

Junji Matsushima

Keisuke Tanimoto

Hiroki Shimomae

Koichi Yasuo

Kazuki Takeuchi

Junichiro Tanaka

Kenichi Suehiro

A compressor, an outdoor heat exchanger, an indoor heat exchanger, and the like are connected to each other with refrigerant piping to form a refrigerant circuit in a closed loop configuration. The refrigerant circuit is provided with a four-way switch valve such that the direction of circulation of a refrigerant is reversible. The refrigerant circuit is provided with a refrigerant heater. During a cooling operation, an electromagnetic valve is closed so that the outdoor heat exchanger serves as a condenser to perform a refrigeration cycle operation. During a heating operation, natural gas is caused to burn in the refrigerant heater to heat and evaporate the refrigerant with high-temperature combustion gas. The evaporated refrigerant flows into the indoor heat exchanger, exchanges heat with indoor air, and is condensed, whereby the indoor air is heated.

Air conditioner with combustion heater for refrigerant

Air-cooled absorption type refrigerating apparatus

Mesh fin type heat exchanger and method of making the same

An air conditioner comprising a casing, an air flow passage extending from an air inlet at the upper side of the casing to an air outlet at the lower side of the casing. A cross flow fan is provided within the casing along with a heat exchanger composed by connecting fins through which air is allowed to pass to the outer surface of the heat transfer tube along the lengthwise direction thereof. The heat transfer tube is branched into a plurality of passes in the heat exchanger. The present invention is characterized in that the heat transfer tube is disposed in a direction crossing the axial direction of the cross flow fan. Even if drift of flowing air is caused by the cross flow fan, distribution in the air flow speed and distribution of heat exchanger can be made equal and heat exchanging capacity of high level can be obtained, without causing the trouble of condensed water from the heat exchanger falling into the air flow passage.

Air conditioner

Growing community of inventors

Osaka, Japan

Katsuhiro Kawabata