Hitachi, Ltd.

Osaka Gas Company Limited

Toho Gas Co., Ltd.

Kyoji Kohno

Michihiko Aizawa

Tomihisa Ohuchi

Yoshifumi Kunugi

Takashi Nakao

Yasuo Koseki

Akira Nishiguchi

Daisuke Hisajima

Seiichiro Sakaguchi

Tomihisa Oouchi

Toshio Hatada

Shigeo Sugimoto

Kenzi Machizawa

Tamio Shimizu

Hironobu Ueda

Kenji Machizawa

Tomihisa Ouchi

Kouji Imura

Hironobu Kawamura

Sadatoshi Takemoto

Shinichi Kannoh

Yoshikazu Nagaoka

Shigekichi Kurosawa

Sigeo Sugimoto

The capacity control range of an interior unit of a multiple type absorption air conditioning system is increased, and turning on and off of cooling/heating and switch over between the cooling and heating can be readily and safely performed. The capacity control range is increased by reserving a liquid refrigerant in an absorption cool/warm water unit. An interior unit is connected to the absorption cool/warm water unit by a communication device. The operation of the cool/warm water unit caused by turning on and off the system and switch over between cooling and heating are automatically controlled by an operation control device. Consequently, the operation is simplified, and safety is improved.

Multiple type absorption air conditioning system

The capacity control range of an interior unit of a multiple type absorption air conditioning system is enlarged, and turning on and off of cooling/heating and switch over between the cooling and heating can be readily and safely performed. The capacity control range is increased by reserving a liquid refrigerant in an absorption cool/warm water unit. An interior unit is connected to the absorption cool/warm water unit by a communication device. The operation of the cool/warm water unit caused by turning on and off the system and switch over between cooling and heating are automatically controlled by an operation control device. Consequently, the operation is simplified, and safety is improved.

Louver segments of a heat transfer fin each have a longitudinal central portion disposed at the center of the louver segment in a direction crossing the flow of a fluid and longitudinal end portions each disposed on either side of the longitudinal central portion and sectioned into parts. Each louver segment has a configuration such that an area of the longitudinal central portion projected in the direction of the flow of the fluid is larger than an area of each of the longitudinal end portions projected in the direction of the flow of the fluid, with respect to the same width of the passage of the fluid.

Heat transfer fins and heat exchanger

Fans are disposed on an upper wall face out of the upper wall face, a lower wall face and side wall faces which constitute an outside frame of a machine body. An air-cooled absorber is disposed on two adjacent wall faces. An air-cooled condenser is disposed on one wall face of the remaining side wall faces. A main apparatus comprising such as an evaporator, a high-temperature regenerator, a low-temperature regenerator, a solution heat exchanger and pipes for connecting operatively the apparatuses together is disposed on an inner portion of the machine body so as to be surrounded by the air-cooled absorber and the air-cooled condenser. Thus, a noise generated from the refrigerating machine is reduced.

Double effect air-cooled absorption refrigerating machine

A double effect air cooled absorption refrigerating machine consisting of fans provided on one side frame member out of the upper, lower and four side frame members which constitute a frame of a machine body, an air cooled heat exchanger provided on the remaining three side frame members and composed of an air cooled absorber and an air cooled condenser, and an evaporator, a high-temperature regenerator, a low-temperature regenerator, a solution heat exchanger and some other parts, all of which are provided on the inner side so as to be surrounded by the side frame members, the machine having a small installation area.

Double effect air cooled absorption refrigerating machine

First path flow passage is formed so as to lead the absorbent solution in the heat exchanger (7; 107) or the receive pan (24; 118a) disposed below a first path absorption process into a cooling air upper stream side of the first path absorption process through a conduit (30). Subsequent path flow passage is formed so as to lead the absorbent solution in the receive pan (24; 120) disposed below a subsequent path absorption process into the cooling air upper stream side of same path absorption process. The absorbent solution flow amount of each vertical tubes group (10; 158) can be obtained larger irrespective of the absorbent solution circulation flow amount for the refrigeration cycle. The dry portions of the vertical tube (10; 158) caused due to the storage of the absorbent solution circulation flow amount can be prevented.

Air-cooled absorption heating and cooling system

An air-cooled absorption refrigeration system wherein refrigerant vapor is introduced into a vertical tube absorber at the top and bottom, or top, bottom and center thereof so as to allow the refrigerant vapor to flow into the absorber at different scattered positions whereby a sufficient flow passage area for the refrigerant vapor is smoothly secured and the refrigerant vapor is received by the absorber.

Air-cooled absorption refrigeration system

Growing community of inventors

Tokyo, Japan

Kyoji Kohno