Phc Holdings Corporation

Minoru Suto

Takashi Toyooka

Yuichi Tamaoki

Fumihiro Asayama

Takahiro Inoue

A refrigeration circuit includes: a gas-liquid separator into which a gas-liquid two-phase refrigerant flowed out from a condenser flows, the gas-liquid separator being configured to separate the gas-liquid two-phase refrigerant into a vapor phase refrigerant and a liquid phase refrigerant; and a plate heat exchanger including a first heat exchanging part and a second heat exchanging part, the first heat exchanging part being a part where the vapor phase refrigerant flowed out from the gas-liquid separator and the liquid phase refrigerant flowed out from the gas-liquid separator exchange heat, the second heat exchanging part being a part where the vapor phase refrigerant flowed out from the first heat exchanging part and a returning refrigerant flowed out from an evaporator exchange heat.

Refrigeration circuit and refrigeration device

Provided is a binary refrigeration apparatus including: a low-temperature side refrigeration circuit including a spiral heat exchanger including a main tube and a spiral tube wound around the main tube in a spiral form, the main tube being a tube where a low-temperature side refrigerant that flows into a low-temperature side compressor enters, the spiral tube being a tube where the low-temperature side refrigerant flown out from the low-temperature side compressor enters; and a high-temperature side refrigeration circuit where a high-temperature side refrigerant that exchanges heat with the low-temperature side refrigerant through a plate heat exchanger circulates.

Binary refrigeration apparatus

This refrigeration device comprises: a high temperature side refrigerant circuit in which a high temperature side refrigerant circulates; a low temperature side refrigerant circuit in which a low temperature side refrigerant circulates; and a cascade heat exchanger that cools the low temperature side refrigerant with the high temperature side refrigerant. In the low temperature side refrigerant circuit, a low temperature side decompressor is disposed downstream of the cascade heat exchanger and a temperature sensor is installed in a piping portion between the cascade heat exchanger and the low temperature side decompressor.

Refrigeration device, temperature sensor mounting pipe, and temperature sensor mounting structure

This refrigeration apparatus comprises: an inner box having a top surface and side surfaces; and an evaporator constituted by bent pipes comprising a top surface portion in contact with the top surface, an upper side-surface portion in contact with the side surfaces, and a lower side-surface portion in contact with the side surfaces below the upper-side surface portion. The pipes constituting the upper side-surface portion are more densely arranged than the pipes constituting the lower side-surface portion. The total length of the pipes constituting the top surface portion and the upper side-surface portion is 62.5% or more of the lengths of the pipes in contact with the inner box.

Refrigeration apparatus

A refrigeration device equipped with: a cascade cycle; a storage unit having a storage space for an object to be cooled by a second evaporator; an internal temperature sensor that detects the temperature of the storage space; a control unit that determines a second rotational speed of a second compressor on the basis of a target temperature for the storage space and the detection result from the internal temperature sensor, and that determines a first rotational speed for a first compressor having a prescribed correspondence relationship with the second rotational speed; and a first power supply unit and a second power supply unit that supply power respectively to the first compressor and the second compressor on the basis of the first rotational speed and the second rotational speed determined by the control unit.

Growing community of inventors

Gunma, Japan

Minoru Suto