Ebara Corporation

Teiichi Mochizuki

Kensaku Maeda

Naoyuki Inoue

Satoru Fujiwara

Motonao Kera

Yutaka Nagashima

A generator which can prevent deterioration of the chilling performance and corrosion, and can provide a high degree of reliability and long service life is disclosed. The high-temperature generator comprises a combustion chamber for flowing a combustion gas therein, a first tube assembly and a second tube assembly provided in the combustion chamber each of which has a plurality of heat transfer tubes for containing liquid therein. The first tube assembly comprises a plurality of bare tubes and is arranged at an upstream of the second tube assembly. The second tube assembly comprises a plurality of finned tubes provided with fins on the outer surface thereof. The heat transfer tubes are arranged in a staggered manner in a direction of the combustion gas flow within each of the first tube assembly and the second tube assembly. The bare tubes and the finned tubes are arranged aligned to each other in a direction of the combustion gas flow at a boundary area between the first tube assembly and the second tube assembly.

High-temperature generator

A high-temperature generator having a high durability and reliability is disclosed. The generator comprises a double shell type furnace body defining a combustion chamber and a liquid chamber surrounding the combustion chamber. A burner is arranged at a front end of the combustion chamber for generating high temperature gas within the combustion chamber. A smoke tube assembly including a plurality of smoke tubes is arranged in the liquid chamber aligned along a longitudinal direction of the furnace body. The rear end of the smoke tube opens to the combustion chamber. A rear wall having a double-wall configuration is provided with an aperture arranged to face the rear end of the smoke tube assembly, and the aperture is covered with a cover plate detachably mounted to the rear wall.

High-temperture generator

The present invention provides a single effect or double effect absorption refrigerating machine comprising an absorber, an evaporator, a generator, a condenser, a heat exchanger, a solution pump and a refrigerant pump and wherein the absorber (A), evaporator (E), generator (G) and condenser (C) are disposed within a single housing in such a manner that the absorber (A) is disposed at a lower portion of the housing, the evaporator (E) is disposed aside and above the absorber (A), the condenser (C) is disposed above the absorber (A), and the generator (G) is disposed above the condenser (C), and further wherein a refrigerant gas passage (2) extending from the evaporator (E) to the absorber (A) and a refrigerant gas passage (1) extending from the generator (G) to the condenser (C) are provided between the evaporator (E) and the generator (G).

Absorption refrigerating machine

A centrifugal compressor has a speed increasing gear located between an impeller and a prime mover and driven by the prime mover to increase the impeller speed. The speed increasing gear includes an impeller shaft provided with a pinion and having the impeller attached to the foremost end portion thereof, a casing body having a divided face perpendicular to the shaft, and a bearing unit arranged at the rear end portion of the impeller shaft. The bearing unit has a thrust collar attached to the rear end of the impeller shaft, an inner thrust bearing formed adjacent to the inner side of the thrust collar, an outer thrust bearing formed adjacent to the outer side of the thrust collar, a radial bearing formed integral to the inner thrust bearing, a housing body combined with the radial bearing, enclosing the thrust collar, a housing cover combined with the housing body to hold the outer thrust bearing from outside, and a spacer sandwiched between the outer thrust bearing and the housing cover to adjust the clearance between the inner and outer thrust bearings, wherein said bearing unit is freely detachably attached to the casing body from a direction opposite to the prime mover.

Speed increasing gear for a centrifugal compressor

A liquid filled evaporator of the shell and tube type is disclosed which is capable of distributing refrigerant liquid over an overall heat exchanger tube nest to significantly improve the heat exchanging and substantially decreasing the overall dimensions of the evaporator. The evaporator comprises a drum shell formed into substantially a rectangular shape in vertical section and to extend in the lateral direction.

Evaporator for refrigerator

A motor cooling apparatus for use with the refrigerator which includes an evaporator, a condenser, a compressor and a main motor adapted to actuate the compressor and connected to the condenser at the internal space thereof. The motor cooling apparatus includes a refrigerant liquid guide passage for guiding refrigerant liquid condensed in the condenser to the internal space of the main motor by means of a refrigerant pump; a first opening formed in the condenser and connected to the internal space of the main motor; and a second opening formed at the bottom of the condenser and connected to the evaporator. The condenser has a reservoir at the bottom thereof to stock the refrigerant liquid. The reservoir is located between the first and second openings in the longitudinal direction of the condenser and connected to the refrigerant liquid guide passage on the suction side of the refrigerant pump. The reservoir may be formed at the same position as where the second opening is formed. The reservoir is provided in this case with a throttle device at the bottom thereof to control the amount of the refrigerant liquid flowing from the condenser to the evaporator. A dam is further formed in the reservoir, enclosing the throttle device, to prevent the refrigerant liquid which has flowed into the reservoir from flowing directly to the throttle device.

Growing community of inventors

Fujisawa, Japan

Teiichi Mochizuki