Patent RU-2744810-C1 (RU)
Inventor: PEREKRESTOV ARSHAVIR PETROVICH
IPC: F25D11/00
Filed: 2019-12-16
Granted: 2021-03-16
Abstract: FIELD: household refrigeration. 
     SUBSTANCE: invention relates to the field of household refrigeration equipment and is intended for short-term storage of frozen products in a chilled state in a refrigerator and long-term storage of frozen products as well. The household refrigerator contains a heat-insulating dividing wall that divides the interior of the heat-insulated casing into a fresh food compartment at the top and a freezer compartment at the bottom. The vegetable container is placed at the bottom of the fresh food compartment to form a vegetable compartment. The refrigerator contains an ice-making compartment, an additional freezer compartment and a freezer compartment into which the freezer is divided. The ice-making compartment and the additional freezer compartment are located directly under the insulating dividing wall to the side of each other. The freezer compartment is located below the aforementioned ice making compartment and an additional freezer compartment. The refrigerator contains a fresh food compartment evaporator and a fan for cooling the fresh food compartment, as well as a freezer compartment evaporator and a fan for cooling the freezer compartment. The controller is configured to alternately switch between the cooling operation of the fresh food compartment and the cooling operation of the freezer compartment, which are respectively intended to direct the refrigerant flow to the evaporator of the fresh food compartment and the evaporator of the freezer compartment, as well as to maintain the rotation of the fan to circulate the cooled air in compartment for fresh food even during the cooling operation of the freezer compartment. As a result, the frost on the evaporator of the fresh food compartment melts and the resulting humidified air flows into the fresh food compartment and the front opening of the vegetable container, which is kept open. The humidified air enters the vegetable container and as a result, just after opening the door of the fresh food compartment, the vegetables can be taken out and put in by inserting a hand through said front opening, which is kept open. There are two evaporators with different temperature levels, high temperature and low temperature. The high temperature evaporator is equipped with a back pressure regulator and a pressure switch and is installed in the fresh food refrigeration compartment, equipped with rotating shelves on a common bearing, located inside the fresh food compartment in the lower part of it, allowing handling food without emptying the entire volume from the refrigerated space. The low temperature evaporator is equipped with a low pressure switch and is installed in the freezer compartment. A fan for forced air circulation through the condenser is installed at the inlet to the condenser chamber. The defrosting chamber is installed in the body of the device and is connected to a condenser having a heated air outlet, equipped with filters. The vegetable storage room is located in the upper part of the fresh food storage compartment and is separated from the rest of the food with its own convective air circulation. The body of the device has the shape of a cylinder in the central and lower part of the compartment for fresh products, which allows manipulation of movable shelves, the shape of a straight prism in the location of the storage compartment for vegetables and a parallelepiped in the location of the freezer compartment. The freezer compartment is divided in the middle by a partition. The refrigerator door follows the configuration of the refrigerated volume. The door has telescopic pull-out shelves. The condenser of the refrigerator is located at the back of the device inside the body, behind the vegetable storage chamber, outside the refrigerated volume. The refrigerator is equipped with an automatic door closing system, four sensors for controlling the defrosting of products on the walls of the defrosting chamber. On the rear side, the refrigerator body is equipped with removable panels for quick access to the main elements of the refrigerator. The body of the refrigerator is divided into three modular sections, allowing for quick disassembly and assembly of the refrigerator during transportation or repair. The regenerative heat exchanger is located between the freezer section and the fresh food compartment and allows the sections to be disassembled without evacuating the refrigeration machine and losing refrigerant. The compressor of the refrigeration machine is located behind the freezer, outside the refrigerated space, installed behind the freezer, outside the refrigerated space. On the bottom, the refrigerator has supports with cylindrical rollers for transporting the assembled refrigerator, temperature and compressor shaft speed sensors, signaling a malfunction in the event of an increase in temperature in the refrigerated space and / or an inoperative compressor, except for defrosting time.  
     EFFECT: invention makes it possible to expand the functionality of the device by improving its structure.  
     1 cl, 4 dwg