To provide a low-temperature storage system that can reduce unusable idle spaces to improve space efficiency for storing storage objects and to prevent a drop in cooling efficiency with simple structure. The low-temperature storage system includes a low-temperature storage chamber accommodating a rotary storage shelf, a moving mechanism having a holding part to carry a storage rack thereon for loading and unloading a storage object in the storage rack, and a picking stage. The holding part is located such that its center axis along a direction of its back and forth movement does not intersect a rotating shaft of the rotary storage shelf. The rotary storage shelf stores the storage rack such that the storage rack, when brought to a removal position, is oriented in a same direction as that of a storage rack placed on the picking stage.

In a refrigerator control method according to an embodiment of the present invention, a control unit intermittently turns on a temperature sensor on a predetermined cycle when a deep-freezing chamber mode is turned off, so that the temperature sensor senses the internal temperature of a deep-freezing chamber for a first set time, and the sensed internal temperature of the deep-freezing chamber is transmitted to the control unit so as to minimize power consumption.

This refrigeration device is provided with: an evaporator configuring a refrigeration circuit; a cascade condenser configuring the refrigeration circuit; and a thermal insulation board arranged between the evaporator and the cascade condenser.

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.

A refrigeration cabinet includes a freezing compartment, a first evaporator and a second evaporator. The freezing compartment includes a freezing compartment door, and the first evaporator and the second evaporator are both equipped in the freezing compartment. The first evaporator is turned off and a second evaporator is working while the freezing compartment door is opened.

A refrigerator according to an embodiment of the present disclosure includes a first storage compartment, a cavity, a heat source, a cold source, a water molecule freezing preventing device, and a controller configured to control an output of at least one of the heat source, the cold source, or the water molecule freezing preventing device, wherein the controller is configured to perform a first operation step to operate based on the first notch temperature for a cooling operation, a second operation step to operate based on a second notch temperature for a heating operation, and a third operation step to operate based on a third notch temperature for the cooling operation, the second notch temperature is higher than 0° C., cold in the first storage chamber increases in the first operation step and the third operation step, and the cold decreases in the second operation step. Accordingly, it is possible to efficiently supply the cold or heat until reaching a supercooling maintenance section.

A refrigerator according to an embodiment of the present disclosure includes a first storage compartment, a cavity, a heat source, a cold source, a water molecule freezing preventing device, and a controller configured to control an output of at least one of the heat source, the cold source, or the water molecule freezing preventing device, wherein the controller is configured to perform a first operation step to operate based on the first notch temperature for a cooling operation, a second operation step to operate based on a second notch temperature for a heating operation, and a third operation step to operate based on a third notch temperature for the cooling operation, the second notch temperature is higher than 0° C., cold in the first storage chamber increases in the first operation step and the third operation step, and the cold decreases in the second operation step. Accordingly, it is possible to efficiently supply the cold or heat until reaching a supercooling maintenance section.

A merchandiser for storing a product for purchase by a customer is disclosed. The merchandiser includes a housing that defines a cavity for storing the product and a controller for facilitating a transaction for the product at the merchandiser. The controller is configured to: receive an input to initiate a transaction for the product, the input including a type and an amount of product to be purchased; unlock a door of the merchandiser to enable a removal of the product based on receiving the input; determine a completion of the transaction based on the door being in a close position for more than a preset amount of time; and charge the customer for the type and amount of product based on the completion of the transaction.

A merchandiser for storing a product for purchase by a customer is disclosed. The merchandiser includes a housing that defines a cavity for storing the product and a controller for facilitating a transaction for the product at the merchandiser. The controller is configured to: receive an input to initiate a transaction for the product, the input including a type and an amount of product to be purchased; unlock a door of the merchandiser to enable a removal of the product based on receiving the input; determine a completion of the transaction based on the door being in a close position for more than a preset amount of time; and charge the customer for the type and amount of product based on the completion of the transaction.

A method for manufacturing a heat insulation box, wherein said method involves disposing an outer box over the outside of an inner box such that there is space therebetween, covering an opening with an elastic sheet from the outside of the outer box, inserting a jig into the opening from the outside of the outer box to force the elastic sheet into the space between the inner box and the outer box, and injecting the urethane foam heat insulating material into the space between the inner box and the outer box so as to foam therein to form a recess with the elastic sheet tightly adhering to the surface thereof.