Daikin Industries, Ltd.

Yuji Fujimoto

Akitoshi Ueno

Masayuki Aono

Tetuo Nakano

Teiji Nakabayashi

Tsutomu Takei

Makoto Ikemiya

Takenori Mezaki

Yasutoshi Mizutani

Yoshihiro Nishioka

Sadanao Kurokawa

A cold-insulation container is disclosed which includes a cold-insulation container main body ( ) which is a heat-insulation structure and a door ( ) for opening and closing an opening portion ( ) of the cold-insulation container main body ( ). Provided in the cold-insulation container main body ( ) are a refrigerating apparatus ( ) and a cold-storage device ( ) which is cooled by the refrigerating apparatus ( ) and stores cold. An external wall of the cold-insulation container main body ( ) and the door are formed from a synthetic resin material.

Cold insulated cabinet

An outdoor unit (,), a parent unit (,), a plurality of child freezers, and a plurality of child refrigerators are provided. The child freezers are disposed in individual frozen display cases, while the child refrigerators are disposed in individual refrigerated display cases. A refrigerant heat exchanger (,) is disposed in only the parent unit (,). The outdoor unit (,) and the refrigerant heat exchanger (,) form a primary refrigerant circuit. A secondary refrigerant circuit is provided in the parent unit (,). Refrigerant circulates through the secondary refrigerant circuit, passing through the refrigerant heat exchanger (,). Each child freezer is provided with a refrigeration utilization side heat exchanger (,) and the heat exchanger (,) and the refrigerant heat exchanger (,) form a secondary refrigerant circuit through which refrigerant circulates. Together with the outdoor unit (,), a heat exchanger which is disposed in each of the child refrigerators forms a secondary refrigerant circuit of a unary refrigeration cycle.

Refrigeration system

Binary refrigerating apparatus

A refrigeration unit comprising a cooling circuit having a compressor, a condenser and an evaporator, and said unit including a hot gas valve and a hot gas bypass passage bypassing the condenser and forming a defrost circuit, so that when the evaporator is frosted upon operation by means of the cooling circuit, constant quantity refrigerant is circulated around the defrost circuit to perform a defrosting operation.

Refrigeration unit including a hot gas defrosting system

A refrigeration equipment having a compressor, a condenser, an evaporator and a thermostatic expansion valve with an equalizer line and capable of controlling its refrigeration capacity, wherein incorporated are a hot gas by-pass passage and a hot gas valve installed thereon to introduce the hot gas into said evaporator by by-passing said condensor and thermostatic expansion valve, a control passage to introduce, during the hot gas by-pass operation, a portion of hot gas to said equalizer line and throttle the opening of said expansion valve and a communication shut-off valve to shut off, at the close of said hot gas valve, the communication between said control passage and equalizer line, whereby controlling the opening of said expansion valve in accordance with hot gas by-passed during the capacity control by use of hot gas, so that the control range of said refrigeration capacity can be extended.

Refrigeration equipment

Growing community of inventors

Osaka, Japan

Yuji Fujimoto