Sanyo Electric Co., Ltd.

Hiroshi Tamayama

Satoshi Hariu

Tetsuo Nakamura

Harunobu Iguchi

Satoshi Ohya

Yuji Yonehara

Hideki Yamaguchi

Katsumi Ogino

Jun Sato

Jun Satou

Hiroshi Taniguchi

A manufacturing method of a transition critical refrigerating cycle device in which a gas cooler and a sub-cooler are integrated to constitute one heat exchanger so as to most efficiently cool a refrigerant in the device. The transition critical refrigerating cycle device is constituted by successively connecting a compressor, the gas cooler, a capillary tube and an evaporator, and having a supercritical pressure on a high-pressure side of the device. The sub-cooler cools an intermediate-pressure refrigerant of the device. A ratio of the number of refrigerant pipes of the sub-cooler to the number of refrigerant pipes of the whole heat exchanger is set to 20% or more and 30% or less. The refrigerant pipes of the sub-cooler have a uniform heat transfer area per unit length of each refrigerant pipe.

Manufacturing method of transition critical refrigerating cycle device

An object is to provide a storage in which a door can be attached using a similar hinge without any trouble even at a time when the door is rotated in reverse and attached, the storage includes a main body; a pair of upper and lower hinges attached to the main body; and a door having one side rotatably supported by both the hinges to openably close an opening, at least one of the hinges has two attachment portions which cross each other at right angles in a corner and which are attached to the main body, and two pivot support portions raised from both the attachment portions and provided with a rotary shaft rotatably supporting the door, and both the attachment portions and both the pivot support portions have a shape which is symmetric with respect to a line passing through the corner and forming an angle of 45&#xb0; with respect to both the attachment portions.

Storage with a symmetric hinge assembly

The invention has an object to provide a cold storage capable of simplifying a construction for pushing up a cooling unit and easily positioning a mounting position of the cooling unit. The cold storage includes a cooling unit integrated with a cooling box accommodating a cooler and a blower, and a compressor, a condenser and the like provided on a mounting base; a cold air discharge and a suction port formed in the bottom wall of a thermal insulating housing; fixing members having a stopper for positioning the cooling unit in a machine room such that a cold air discharge and a suction port correspond to lower sides of the first mentioned discharge and suction ports, respectively; and pushing-up members and operating arms for them, the pushing-up members causing the cooling unit to be pushed up toward the bottom wall of the thermal insulating housing by abutting against the lower surface of the mounting base on front and rear sides with respect to inserting direction of the cooling unit into the machine room.

Cold storage

A refrigerating apparatus which is capable of accurate and swift correspondence to a transient change of a refrigerant circuit or an accumulated deviation of the degree of superheat of a refrigerant, thereby releasing the state in which the liquid refrigerant is flowing back to the compressor and the overheated state, and a method of controlling such a refrigerating apparatus. The refrigerating apparatus comprises a refrigerant circuit composed of a condenser, an expansion valve and an evaporator which are connected to each other in series, a means for detecting the evaporating temperature of the refrigerant, a means for detecting the exit temperature of the evaporator, and a control means for controlling the opening of the expansion valve on the basis of the evaporating temperature of the refrigerant and the exit temperature of the evaporator in accordance with a fuzzy reasoning.

Refrigerating apparatus and method of controlling refrigerating

This open show-case has inner and outer air ducts, a first evaporator and a first blower in said inner duct (an inner evaporator and an inner blower, respectively), and a second evaporator and a second blower in said outer duct, said blowers circulating the air to form at least two layers of air curtains running between respective upper ports at the upper end of the front opening of said show-case and respective lower ports at the lower end of said opening. The show-case is operated by: providing high pressure refrigerant only through the inner evaporator via a decompression valve to thereby evaporate the refrigerant therein during refrigeration operation by the inner evaporator, without passing the refrigerant through the outer evaporator; and providing high pressure refrigerant to the inner evaporator and to the outer evaporator via a decompression valve during defrosting operation for the inner evaporator, with the outer blower driven at a higher speed than a normal speed and the inner blower driven in a reverse direction at a slower speed than a normal speed.

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Ashikaga, Japan

Hiroshi Tamayama