RU183476U1 - FRIDGE - Google Patents

Abstract

The utility model relates to the field of refrigeration equipment and is intended for storage of vaccines, bacteriophages, probiotics and other immunobiological drugs in the temperature range from + 2 ° C ... + 8 ° C. The technical task of the claimed utility model is to create a refrigerator capable of maintaining temperature for not less than 24 hours when a power outage. The technical result of the utility model is to maintain the temperature in the refrigerator in the range + 2 ° C ... + 8 ° C for at least 24 hours when off The technical result is achieved in that the refrigerator comprising a chamber formed by a thermally insulated cabinet and a door with a locking device, shelves installed in the chamber, an evaporator, an air duct, a fan, a casing, a condenser, a compressor, a microprocessor control unit, an air duct are made with holes on the front wall of the chamber, cooled by a foamed tubular evaporator made in the form of a coil and installed on the insulation side along the entire rear wall, while the thickness of the heat yatsionnogo layer of the inner chamber is 140-145 mm and the upper shelf is made of galvanized steel sheets 1.0-2.0 mm thick stainless steel sheet of 0.3-1.0 mm in thickness to accommodate therein the ice packs. 3 ill.

Description

The utility model relates to the field of refrigeration equipment and is intended for storage of vaccines, bacteriophages, probiotics and other immunobiological drugs, in the temperature range from + 2 ° С ... + 8 ° С.

A refrigerator is known (RF patent for utility model No. 39690, published on 08/10/2004) containing a foamed cabinet, doors with insulation, an air duct located on the rear wall separating a flat evaporator installed with gaps between the air duct and the rear inner wall of the cabinet from the cabinet volume with with insulated air, in the upper part of the cabinet there is a fan installed parallel to the upper wall of the cabinet with the flow direction to the door closed by a casing, shelves with cartridges are installed inside the cabinet, four on each shelf, made with separate cells, capacitor and compressor. The refrigerator also contains a microprocessor control unit and a tangential type fan.

A refrigerator is known (RF patent for utility model No. 40447, published September 10, 2004), comprising a chamber formed by a thermally insulated cabinet and a door with a lock, shelves installed in the chamber, an evaporator, an air duct, a fan mounted on top of the air duct and closed by a casing, a condenser, a compressor, a microprocessor control unit, and transparent panels are mounted on the hinges along the door in the chamber, so that the duct has a U-shaped design with openings on the front and side walls of the chamber, cooled by a foam tube evaporator, in made in the form of a coil from a tube mounted on the insulation side along the entire rear wall, and the casing is made of one part with holes located on the front wall.

Known refrigerators do not provide for temperature maintenance during an emergency power outage, and, as you know, the mismatch of storage conditions, in particular temperature conditions, can adversely affect vaccines and other immunobiological drugs.

The technical task of the claimed utility model is to create a refrigerator capable of maintaining temperature for 24 hours when a power outage occurs.

The technical result of the utility model is to maintain the temperature in the refrigerator in the range + 2 ° C ... + 8 ° C for at least 24 hours during power outages.

The technical result is achieved in that the refrigerator comprising a chamber formed by a thermally insulated cabinet and a door with a locking device, shelves installed in the chamber, an evaporator, an air duct, a fan closed by a housing, a condenser, a compressor, a microprocessor control unit, an air duct are provided with openings on the front the wall of the chamber, cooled by a foamed tubular evaporator, made in the form of a coil and installed on the side of the insulation along the entire rear wall, while the thickness of the insulating layer inside It chamber is 140-145 mm and the upper shelf is made of galvanized steel sheets 1.0-2.0 mm thick stainless steel sheet of 0.3-1.0 mm in thickness to accommodate therein the ice packs.

The proposed utility model is illustrated by drawings: In FIG. 1 shows a sectional side view,

In FIG. 2 shows a sectional view of the lower part of the refrigerator. FIG. 3 shows a front view.

The refrigerator (Fig. 1, Fig. 2) contains a chamber 1 formed by a heat-insulated metal cabinet 2 and a heat-insulated metal door 3, equipped with a locking device 4 and a stand 5. The refrigerator is mounted on four swivel wheels 6 to facilitate movement. In the chamber 1, shelves 7 are installed for placing containers / ampoules with a vaccine or other drugs.

The chamber 1 is surrounded by a layer of thermal insulation 8 made of polyurethane foam. The thickness of the layer of polyurethane foam is 140-145 mm.

In the upper part of the chamber 1 there is a tangential fan 9, separated from the cooling space by the casing 10.

Along the rear wall of the cabinet 2, a tubular aluminum evaporator in the form of a coil (not shown) is foamed along the entire height from the side of the insulation, and along the rear wall of the chamber 1 there is an air duct 11 with holes 12 on the front wall of the air duct. The channel formed between the duct 11 and the rear wall of the cabinet 2, through openings on the front wall in its upper part is in communication with the tangential fan 9.

In the lower part of the camera on the rear wall of the camera 1 is installed a temperature sensor 13.

In the lower part of the refrigerator formed by the stand 5 there is a compressor 14, a condenser 15 with a fan 16, a microprocessor control unit with a control panel 17 mounted on the front surface of the stand, designed to set, maintain a given temperature, display the temperature in the working chamber 1.

The frame of the inner cabinet 6 and the panel of the door 2 of the refrigerator are made of polymer materials with an antimicrobial coating, which eliminates unpleasant odors associated with the life of microorganisms in the refrigerator chamber, and the air in the refrigerator chamber becomes sterile.

The inner cabinet 1 is made of aluminum tape and is divided into 4 compartments with U-shaped shelves 7 made of stainless steel.

The upper U-shaped shelf 7a is made reinforced by the implementation of a sheet of galvanized steel with a thickness of 1.0-2 mm and a sheet of stainless steel with a thickness of 0.3-1.0 mm, fixed to the side walls of the cabinet. On the upper reinforced shelf 7a there are cold accumulators 18, which serve as an additional source of cold in emergency situations. Cold accumulators can be filled with water or another refrigerant and occupy 1/6 of the total volume of the refrigerator.

Cooling in the refrigerator is carried out by a hermetic compressor type 14. A small amount contains refrigerant R600a, which is a natural gas that does not pollute the environment.

Sealing the doorway of the refrigerator is carried out by an elastic sealant with a magnetic insert.

On the upper reinforced shelf 7 are placed cold accumulators 18, which serve as an additional source of cold in emergency situations. Cold batteries occupy 1/6 of the total volume of the refrigerator.

The refrigerator operates as follows:

The compressor 14 pumps the refrigerant vapor from the evaporator and pumps them into the condenser 15. In the condenser, the refrigerant vapor is cooled and condensed. Next, the liquid refrigerant through the filter dryer 19 and the capillary pipe enters the evaporator. At the inlet of the refrigerant to the evaporator, the pressure drops from the condensing pressure to the boiling pressure. In this case, the refrigerant boils, entering the channels of the evaporator, the refrigerant boils, the energy necessary for boiling in the form of heat, is taken from the surface of the evaporator, cooling the air in the refrigerator. After passing through the evaporator, the liquid refrigerant is converted into steam, which is pumped out by the compressor 14.

When the refrigerator is operating, the heated air from the chamber 1 enters the zone of the fan 9, then through the fan 5 the air enters the rear wall of the cabinet 2 cooled by the evaporator, into the space between the air duct 11 and the rear wall of the cabinet 2, after which the air passes through the openings 12 on the front wall of the air duct 11 enters the volume of chamber 1, while containers / ampoules placed on shelves in chamber 1 are washed with chilled air. Since the back wall is cooled over its entire height, the air, being cooled, enters evenly cooled in all parts of the chamber 1.

Equipping the refrigerator with a microprocessor control unit allows you to set, maintain a given temperature in the range from + 2 ° C ... + 8 ° C, display the actual temperature in the working chamber on the panel of the control unit 15.

During a power outage, an increased layer of thermal insulation made of polyurethane foam allows for a long time (24 hours) to keep the set temperature in the refrigerator chamber. Also, the function of maintaining the temperature in a predetermined interval when the power is turned off is performed by the cold accumulators installed on the upper shelf inside the chamber.

When the temperature deviates from the set interval, the alarm sound and light (screen blinking) are triggered.

The advantages of the claimed utility model:

- The ability to maintain temperature during a power outage for 24 hours due to the increased layer of thermal insulation and the presence of cold batteries;

- The presence of a heat-insulating metal door with a lock to prevent unauthorized access;

- The ability to automatically maintain the temperature in the chamber;

- The presence of an alarm when deviating from a given temperature range;

- Temperature display on the control panel display;

- The presence of a forced air circulation system;

- The presence of environmentally friendly ozone-safe isobutane refrigerant (R600a), which provides a reduction in energy consumption and noise during compressor operation;

- Antibacterial coating of the inner cabinet and door panel.

Claims (1)

A refrigerator comprising a chamber formed by a thermally insulated cabinet and a door with a locking device, shelves installed in the chamber, an evaporator, an air duct, a fan enclosed by a casing, a condenser, a compressor, a microprocessor control unit, the air duct being made with openings on the front wall of the chamber, which is cooled a foamed tubular evaporator made in the form of a coil and installed on the insulation side along the entire rear wall, characterized in that the thickness of the insulating layer of the inner chamber is 140-145 mm and the upper shelf is made of galvanized steel sheets 1.0-2.0 mm thick stainless steel sheet of 0.3-1.0 mm in thickness to accommodate therein the ice packs.

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