Hitachi Building Systems Co., Ltd.

Kenji Machizawa

Keiji Tachibana

Tadakatsu Nakajima

Haruo Nashimoto

Tomohiro Komatsu

Isao Katou

Tomio Nakajima

Akira Nishiguchi

Masaru Noujyo

Yoshikazu Hanawa

Hidenori Iwao

Yukio Hukushima

Tatsuo Fujii

Kyoichi Sekiguchi

A management apparatus and a management method which can forecast inspection time before the lowering of performance or the occurrence of abnormality in a heat source unit for an air conditioner are provided. The operating condition of the air conditioner heat source unit is monitored by a central monitoring unit of the management apparatus connected to the heat source unit through an information communication network. Operating data of the heat source unit is analyzed so that the lowering of the performance and the advance of the degree of abnormality in the heat source unit are diagnosed. Thus, the loss of a user caused by the failure stop or the performance lowering of the heat source unit is reduced. Further, the load on the heat source unit is grasped by the central monitoring unit so that remote central control is carried out to make the operating cost minimal.

Apparatus and method for managing heat source unit for air conditioner

In an absorption type chiller heater, a generator is heated in order to heat a refrigerant-mixed solution to generate refrigerant vapor. This heating is generally carried out by causing high-temperature combustion gas to flow in contact with heat transfer fins, which are provided on the periphery of the generator. The aforesaid burner uses a burner of liquid-fuel combustion structure to produce a longer flame as compared to that of a gas burner. The extremity of the lengthened flame coming into contact with the heat transfer fins can cause problems such that the fins are locally overheated to burn out. In this view, the present invention arranges a flame buffer plate between the liquid fuel burner and the heat transfer fins and provides a curved flame channel. This forms a curved flame, whereby the flame, despite of its great length, is kept from its extremity coming into contact with the heat transfer fins. Besides, the flame channel, even if long, is curved to prevent larger outer dimensions of the entire chiller heater.

Air-cooled absorption type chiller heater and modification method

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Chiyoda-ku, Japan

Kenji Machizawa