RU35873U1 - Household two-chamber refrigerator - Google Patents

Description

200312o39OMPK7 F25D 11/02

2 о, ° M1JLK F25B 39/02

Household two-chamber refrigerator

The utility model relates to refrigeration, in particular, to a domestic two-compartment refrigerator and can be used in refrigerators with two evaporators, one of which is located in the freezer, the other in the refrigerator.

The double-evaporation system is currently used as a rule in double-chamber refrigerators. There are two options for evaporative systems of two-chamber refrigerators connected in series. In the first embodiment, the liquid refrigerant enters from the condenser through a throttling device, first to the evaporator of the freezer, where it boils at low pressure, and then moves to the “weeping evaporator of the refrigerator. In the second embodiment, the refrigerant enters the evaporator of the refrigerating chamber, then to the evaporator of the freezing chamber. In both the first and second embodiments, the refrigerant channels of both evaporators are connected in series. (1)

Famous two-chamber refrigerator "Biryusa-228 is commercially available. Refrigerator contains

thermally insulated casing, consisting of a freezer located in the lower part of the casing, a refrigerating chamber located in the upper part of the casing and two sheet-tube evaporators, the channels of which are connected in series. The refrigerator compartment evaporator is made in the form of an aluminum sheet, on the back of which a tubular coil section is attached. The evaporator is located vertically near the rear wall of the refrigerator. The sheet-tube evaporator of the freezer is made in the form of a whatnot with four horizontal shelves. Each evaporator shelf consists of a box-shaped aluminum sheet, on the back of which a tubular coil section is attached. In the channels of the coil sections of all shelves, the refrigerant moves in one

direction - sequentially along the shelves from top to bottom from the coil section of the first (upper) shelf to the coil section of the last (lower) shelf and further to the coil section of the evaporator of the refrigerator. A compartment for quick freezing of products is located between the first coil section, through whose channels the refrigerant enters the freezer, and the second coil section, whose channels are connected to the channels of the first section.

The disadvantage of this two-compartment refrigerator is the following: when loading the compartment for quick freezing with warm products of a certain mass, for example 4.5 kg (standard weight for this class of refrigerator), these products freeze to a temperature below minus 18 ° C for 24 hours. At the same time, the temperature in the refrigerator decreases below 0 C, which does not comply with GOST 16317-87 “Electrical household refrigeration appliances.

To avoid overcooling of products in the refrigerator below the Evaporator, a heater is installed that compensates for excess cold. The temperature in this case in the refrigerator and in the freezer will correspond to GOST 16317-87, however, there is an overspending of electricity as a result of using a heater to compensate for excess cold. In addition, the freezing of warm products takes place in a semi-automatic mode: after loading the compartment for quick freezing with warm products, the “freeze when this turns on the heater, mode indicator. After freezing food to a temperature of minus 18 ° С, the refrigerator goes into normal operation mode: the heater and indicator turn off, and the temperature in the chambers is maintained using a temperature regulator.

The proposed utility model solves the problem of ensuring automatic freezing and increasing the energy efficiency of the refrigerator.

The specified technical result in the proposed domestic two-compartment refrigerator containing a thermally insulated body, consisting of a freezer with a compartment for quick freezing and a refrigerator located above it, a sheet-tube evaporator of the freezer, made in the form of a shelf with horizontal shelves carrying tubular coil sections with refrigerant channels connected in series with each other and with the channels of the coil section of the sheet-tube evaporator of the refrigerating chamber, and in the upper part of the compartment for quick freezing is located kite section, through the channels of which the refrigerant enters the freezer, is achieved due to the fact that the shelves of the freezer with coil sections, in whose channels the refrigerant moves in the same direction, are located between the shelves with coil sections, in the channels of which the refrigerant moves in the opposite direction, and a compartment for quick freezing is located between the shelf with a coil section, through whose channels the refrigerant enters the freezer py & shelf with the coil section, through which channels the coolant exits the freezing chamber.

The drawings show a two-chamber refrigerator, where: FigL - schematically shows a cabinet of a two-chamber refrigerator;

Figure 2 - evaporators with coil sections in an isometric view.

The two-chamber refrigerator contains a heat-insulated cabinet 1, consisting of a freezer 2 and a refrigerator 3, two sheet-tube evaporators 4,5 connected in series. The sheet-tube evaporator 4 of the freezer 2 is made in the form of a bookcase with four horizontal shelves in the form of aluminum sheets 6,7,8,9, on the back of which are attached coil sections 10,11,12,13 with channels for the refrigerant connected in series with each other and with the coil section 14 of the sheet-tube evaporator 5 of the refrigerating chamber 3.

The compartment 15 (FIGL) for quick freezing is located between the shelf with the coil section 10, through the channels of which the refrigerant through the capillary tube 16 enters the freezer 2 and the shelf with the coil section 11, through the channels of which the refrigerant leaves the freezer 2 and enters the channels of the coil section 14 of the evaporator 5 of the refrigeration chamber 3.

The refrigerator operates as follows:

The liquid refrigerant from the condenser (not shown in FIG. 1) through the capillary tube 16 enters the coil section 10 of the first shelf 6, which is located in the upper part of the compartment 15 for quick freezing. Continuing to move in the same direction, the refrigerant enters the channels of the coil section 12 of the shelf 8, from where it enters the channels of the coil section 13 of the lower shelf 9. Passing the channels of the coil section 13, the refrigerant begins to move in the opposite direction and enters the channels of the coil section 11 of the shelf 7, which is the bottom compartments 15 for quick freezing. Passing the coil section 11, the refrigerant enters the channels of the coil section 14 of the evaporator 5 of the refrigeration compartment 3, from where it enters the compressor via the suction pipe 17 (not shown in FIG. 1), where it is compressed and again fed to the condenser. The cycle repeats.

Using the proposed utility model allows for automatic freezing and increasing the energy efficiency class of the refrigerator - from the class “F according to GOST R 51565-2000, the two-compartment refrigerator goes into class“ D.

Used sources

1.B.S. Vainberg, L.N. Vine Household compression refrigerators M., Food industry, 1974, pp. 52-56.

2.TU92-01.02.029 Refrigerator "Biryusa-228 (prototype).

3. GOST 16317-87 “Electrical household refrigeration appliances.

(QO

Claims (1)

A household two-compartment refrigerator containing a thermally insulated body, consisting of a freezer with a compartment for quick freezing and a refrigerator located above it, a sheet-tube evaporator of the freezer, made in the form of a whatnot with horizontal shelves carrying tubular coil sections with refrigerant channels connected in series with each other and with channels of the coil section of the sheet-tube evaporator of the refrigerating chamber, and in the upper part of the compartment for quick freezing a coil section is laid through the channels of which the refrigerant enters the freezer, characterized in that the shelves of the freezer with coil sections, in whose channels the refrigerant moves in the same direction, are located between the shelves, in the channels of which the refrigerant moves in the opposite direction, and the compartment for quick freezing is located between the shelf with the coil section, through the channels of which the refrigerant enters the freezer, and the shelf with the coil section, through the channels of which the refrigerant leaves the freezer Camera oh.