Sanyo Electric Co., Ltd.

Sanyo Electric Air Conditioning Co., Ltd.

Hideki Funai

Kazuhiro Yoshii

Akira Hatakeyama

Kazuyasu Iramina

Hisao Miyazaki

Kazuya Sawakura

Haruki Nishimoto

Daisaku Chou

Even when the efficiency of a low temperature heat exchanger is raised to reduce the required heat capacity inputting to the absorption refrigerating machine and the temperature of cooling water supplied to an absorber falls suddenly as it is, and thereby the temperature of a diluted absorbent solution falls suddenly, an absorption refrigerating machine without abnormally increasing the temperature of the concentrated absorbent solution and crystallizing the solution is disclosed. A heat recovery deviceis provided between a low temperature heat exchangerand a high temperature heat exchangerof an absorbent solution pipefor connecting a high temperature regeneratorand an absorberwith the low temperature heat exchanger, the high temperature heat exchangerand an absorbent solution pumptherebetween. Further, the heat recovery deviceis provided between the low temperature heat exchangerand the absorbent solution pump. High temperature and high-pressure vapor is supplied through a heat source fluid supply pipeto a heat exchanger pipeA provided within the high temperature generatorto thereby heat and boil a diluted absorbent solution within the high temperature regeneratorand radiate heat. Then, high temperature drain, which has been condensed by heat radiation and discharged to an exhaust heat fluid pipeA, is supplied to the heat recovery devicesto thereby heat a diluted absorbent solution delivered from the absorberthrough the absorbent solution pipeto the high temperature regeneratorby an absorbent solution pump

Absorption refrigerating machine

A dual heat source high-temperature regenerator to solve problems involved in two types of conventional high-temperature regenerators for carrying out heating by using a dedicated burner as the heat source and by using exhaust gas supplied from outside systems as the heat source; namely, the former type has a problem of higher running costs, and the latter a problem of narrower ranges for capacity control. The dual heat source high-temperature regenerator arranges two inner shells and inside an outer shell to form combustion and exhaust gas flues, respectively. The combustion gas flue has a sideways U shape as a whole. The lower end is equipped with a burner, and the upper end connected to an exhaust duct. The exhaust gas flue,has a horizontal, straight shape as a whole. One end is provided with an exhaust gas inlet, and the other end connected to an exhaust duct. The portions where a dilute absorbent liquor collects heat easily are the vertical-stroke portion on the sideways U of the combustion gas flue and the vicinity of the end of the exhaust gas flue making the exhaust gas inlet. The vertical-stroke portion and the exhaust gas inlet are collected to the same side so that the convection current of the dilute absorbent liquor produces a smooth circulation of the liquor as shown by broken lines in the drawings.

Dual heat source high-temperature regenerator

Growing community of inventors

Tochigi, Japan

Hideki Funai