Mayekawa Mfg. Co., Ltd.

Yasushi Tomiyama

Masato Takeda

Akito Machida

Yuki Matsumoto

Iwao Terashima

Takashige Inaba

Nelson Mugabi

Tsuyoshi Itagaki

Ichiro Sekine

A plate stack includes a plurality of plates, each including corrugated portions formed on front and back surfaces thereof. First and second heat exchange flow passages are formed between plates, arranged alternately along stacking direction of the plates. Each plate has two through holes penetrating the front and back surfaces, through which the first heat exchange fluid is introduced and derived. The plate stack includes first partition weirs formed on at least one of two plate surfaces, the two plate surfaces forming a corresponding one of the first heat exchange flow passages therebetween. First partition weirs are symmetrically and obliquely arranged with respect to a center line connecting centers of two through holes as viewed from the stacking direction. A flow passage is formed along the center line on a side of at least one of the two through holes, from which first heat exchange fluid is introduced.

Plate stack and heat exchanger

A refrigerant heat exchanger is provided and includes: a hollow container having a cylindrical shape; a plate stack disposed on an inner lower side of the hollow container, including plates each having a front side and a back side with a plurality of concavo-convex portions formed thereon which are stacked to form a first heat exchange flow passage through which a first refrigerant flows and a second heat exchange flow passage through which a second refrigerant flows; a supply pipe disposed in an interior space of the hollow container above the plate stack and configured to supply the first refrigerant to the plate stack; and a discharge pipe configured to exchange heat between the first refrigerant supplied from the supply pipe and the second refrigerant flowing through the plate stack and to discharge the first refrigerant.

Refrigerant heat exchanger

The object of the invention is to provide an ice-making machine having an eccentric driving means and features of reduced wear and tear due to the movement of rotating rods, the machine being composed so that a plurality of heat transfer pipes and rotating rods which rotate inside the heat transfer pipes are disposed in a shell , liquid to be cooled is supplied to the inside and refrigerant to the outside of the heat transfer pipes respectively, the liquid to be cooled is cooled so as to form ice crystal on the inside surfaces of the heat transfer pipes , the ice is scraped by the rotating rods and taken out as ice grains together with the liquid to be cooled, the rotating rods being passed through the holes provided on a driving plate which is connected with a driving shaft by the medium of a eccentric drive means or to be revolved to the effect that the rods are revolved by the revolving of the driving plate while rotating in the holes

Ice-making machine and ice-making method

Growing community of inventors

Tokyo, Japan

Yasushi Tomiyama