Sanyo Electric Co., Ltd.

Ken Aoki

Katsuhiko Hoshi

Mitsuru Kakinuma

Shigeru Togashi

Shigeo Satoh

Hiromi Saitoh

Tsuyoshi Kawaai

Hiroyuki Kuribara

Takashi Takizawa

Hirotaka Nakano

Takayuki Matsuhashi

Kiyoshi Ohshimizu

In a controller for a refrigerating system including refrigerating machines and showcases, a showcase that is about to execute a defrost operation is detected on the basis of a defrost operation indicating information. When the controller receives a notification indicating start of the defrost operation from the showcase concerned or on the basis of a comparison result between a pre-stored defrost-operation start time and the present time, at least one of the refrigerating machines is instructed to reduce the output power thereof. When the showcase finishes the defrost operation, the at least one of the refrigerating machines is instructed to increase the output power thereof so that the output power of the refrigerating machine is set to stationary output power.

Controller and control method for refrigerating system

A low-temperature storage of the invention has N refrigeration units that may be used for independently refrigerating N chambers, and a controller having N sets of temperature region setting means and corresponding N temperature settling means usable for N refrigeration chambers. Each of said temperature region setting means comprises a plurality of temperature control switches which may assume a combination of ON and/or OFF states for establishing a desired temperature region in an associated chamber. Furthermore, within respective temperature regions, desirable temperatures may be preset by associated temperature setting means. When the number chambers available is less than N, said controller may be used for controlling an arbitrary number of refrigeration chambers in a desired combination of modes by setting non-used set of said temperature setting means in prohibited mode.

Low-temperature storage

An apparatus for preparing ice creams, wherein a freezing cylinder is constituted such that a liquid mix supplied from a mix tank is stirred in a stirring apparatus that is installed in the inside of the freezing cylinder, and refrigerated so as to complete ice creams, any amount of which can be dispensed through a dispensing port. For the cleaning and sterilization of the inside of the cylinder, the inside is heated by reversing the flow of heat media which are to be circulated through the refrigerating part of the cylinder to dissolve and automatically withdraw the ice creams in the cylinder, then cleaned several times by supplying and discharging hot water, to and from the inside, and after that sterilized by supplying hot water to the inside, and discharging the water from it.

Apparatus for preparing ice creams

The refrigeration apparatus according to the invention has a main refrigeration line comprising a compressor, a condenser which are installed outdoor, and a decompression device, an evaporator and a refrigerant flow rate control valve which are installed indoor, all connected in a loop. The main refrigerant line is provided with an auxiliary refrigerant line that connects the input side of the decompression device in the main refrigerant line with the inlet side of the compressor via a bypass valve. The lowering in the suction pressure of the compressor is detected if it happens, and the pressure is restored by opening the bypass valve by throttling the refrigerant flow rate control valve, so that the compressor may be kept on running.

Refrigeration apparatus

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Ashikaga, Japan

Ken Aoki