Mitsubishi Denki Kabushiki Kaisha

Yoshio Sasaki

Masahide Hashimoto

Yoshitaka Kurisu

Yukihiro Hosaka

Masato Kimura

Tatsuo Kuramoto

Noriharu Kanto

Minoru Kinoshita

Shigeo Zuiki

A cooling apparatus for cooling food products to be frozen from their both sides by putting said products between plural, vertically arranged cooling means comprises a rotary conveyor, a cooling means placed below the upper belt of the rotary conveyor and containing a low temperature cooling fluid to thereby cool the upper belt and at least one cooling vessel placed above the rotary conveyor so as to be vertically movable.

Cooling apparatus

A freezing apparatus is disclosed wherein a first and a second endless belt conveyor are disposed substantially horizontally put one upon another with a predetermined gap being left between the confronting runs of the conveyors, the conveyor belts being adapted to be separately cooled at their rear surfaces by means of cooled brine, and adapted so that products-to-be-frozen can be supplied into the gap from one end with their upper and lower surfaces being kept in contact with the exterior surfaces of the confronting runs of the moving belts to be conveyed towards the other end of the gap, whereby the products are quickly frozen by simultaneous cooling of their upper and lower surfaces. In this case, at least one of the belt conveyors is preferably composed of a flexible belt conveyor made of e.g. a thin rubber sheet.

Freezing apparatus

A continuous freezing apparatus is provided with a flexible sheet conveyor arranged above products to be frozen placed on and carried by a steel conveyor so as to be in contact with the products and the flexible sheet conveyor is filled with cold brine, to thereby freeze said products through both upper and lower surfaces of contact. The width of the track of the flexible sheet is determined in such a manner that the track width is made substantially equal to the width of the flexible sheet at its turning areas where the flexible sheet does not in contact to the products and the track width is made narrow to the extent that a depressed slack sufficient to fill therein the cold brine is formed in the flexible sheet at a position where the flexible sheet is in contact with said products.

Continuous freezing apparatus

A liquid separator in a refrigerating air conditioning apparatus to be provided in the pipeline connecting the compressor and the evaporator thereof is disclosed wherein a container having generally a horizontal cylindrical form with closed ends has its inside divided into two spaces by a rectangular partition plate elongating horizontally and secured at its three sides to the inside walls of the container, the other side being separated from one of the ends so as to leave a gap therebetween. Inlet and exit pipes for a refrigerant gas are secured to the outer wall of the container to be opened into the two spaces, a high pressure liquified refrigerant coil being disposed within the one of the spaces to which the inlet pipe opens so that its principal flow direction intersects orthogonally the direction of the inlet pipe. The container is further provided with a tube having a bottomed end introduced therein so as to have the bottom end reside in the gap, the tube mounting therein a temperature sensing element adapted to coact with a high pressure liquified refrigerant flow rate regulating valve mounted to a pipe conveying the liquified refrigerant to the evaporator.

Liquid separator for use in a refrigerating air conditioning apparatus

A frost deposition detector for an air cooler disposed in a refrigerating chamber. A first signal is generated when the electric current flowing through the motor of the air blower for the air cooler, the value of which is adjusted with respect to the voltage variation across the motor and the air temperature change in the refrigerating chamber, reaches a threshold value which is proportional to the initial current value corresponding to the state of no frost deposition. A second signal is generated when the difference between the air temperature in the chamber and the air cooler temperature reaches a threshold difference, which can be set at a desired level. The detector generates a defrostor activation signal when and only when both first and second command signals are generated.

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Nagasaki, Japan

Yoshio Sasaki