Refrigerating unit

FIELD: heating.

SUBSTANCE: invention refers to refrigerating unit (1) that includes external housing (2), at least one refrigerating compartment (3) for storage of cooled products (5) and refrigerating circuit (6) with evaporator (4) for cooling of refrigerating compartment (3). Evaporator (4) includes the first element (7) of evaporator and the second element (8) of evaporator; besides, the first element (7) of evaporator is located outside refrigerating compartment (3), and the second element (8) of evaporator is located inside refrigerating compartment (3). The first element (7) of evaporator is made in the form of a helix evaporator, envelops refrigerating compartment (3) and includes the pipelines carrying cooling agent, which are wound around the refrigerating compartment and are in heat-carrying contact with it. The first element (7) of evaporator and the second element (8) of evaporator are connected in series; besides, the cooling agent circulating in refrigerating circuit (6) of the refrigerating unit first flows through one evaporator element, and then through the other evaporator element, or they are parallel connected.

EFFECT: increasing efficiency, and cooling or freezing capacity.

6 cl, 1 dwg

 

The technical field

The invention relates to a refrigerating apparatus, which contains the outer casing, at least one refrigeration compartment, in particular, freezer compartment for storage of refrigerated products, and refrigeration circuit evaporator for cooling the freezer compartment.

The level of technology

A refrigerator is an electric or gas-fired appliance, which contains a cooled inner cavity for storage of refrigerated products. The temperature in the inner cavity generally exceeds 0C, for example, ranges from +2C to +12C. Freezer is an appropriate device for the storage of frozen foodstuffs and contains an internal cavity, in which the temperature is maintained below 0C, for example, -25C to -4C. the Combined cooling and freezing devices contain at least two internal cavities, or two separated from each compartment in which are supported the various temperature regimes.

Such refrigeration apparatus containing refrigerant circuit, designed for cooling the corresponding internal cavity. Refrigerant circuit takes away from the internal cavity of the heat through thermally connected to the heat exchanger and releases this heat into the environment through the second heat exchanger. Refrigerant circuit may contain the substance of several components, for example, condenser, evaporator, valves, hydraulic resistance and pipes for the refrigerant.

The known location of the evaporator is used to cool the freezer compartment inside the freezer compartment in the immediate vicinity of the cooled products. The evaporator is in the freezer compartment and divides it into segments. This evaporator may be in the form of a wire-tube evaporator and it is advantageous that the cooled products within the freezer compartment come into direct thermal contact with the evaporator. The evaporator is permeable to the cold air inside the freezer compartment and in most cases is made in the form of a lattice formed by the pipes for the refrigerant.

Also known positioning of the evaporator outside around refrigerating or freezing compartment. In this case, direct contact of the cooled products with evaporator is missing. The cooled products are cooled from the outside. The evaporator may be in the form of a spiral evaporator, which tube for refrigerant wound around outside refrigerating or freezing compartment.

For operation of the refrigeration apparatus is especially important efficiency. In addition, the importance cooling or freezing the ability of the refrigeration apparatus.

Cooling or freezing sposobnosti determines to what extent and how quickly it can be cooled cooled product known mass and heat capacity for a specified period of time.

Disclosure of inventions

The task of the invention is the refrigeration apparatus, which will be of high efficiency and large cooling or freezing ability.

This problem is solved refrigerating apparatus with the features disclosed in the independent claim.

Other advantageous options that can be used separately or in any suitable combination, are disclosed in the dependent claims or are described in detail in the following description.

The refrigeration apparatus according to the invention contains the outer casing, at least one refrigeration compartment for the storage of refrigerated products, and refrigeration circuit evaporator for cooling the refrigerating compartment, and the evaporator includes a first evaporator element and the second element of the evaporator, and the first element of the evaporator is located outside the refrigerating compartment and the second element of the evaporator is located inside the refrigerator compartment.

Due to the combined application of the element of the evaporator is located inside the refrigerator compartment, and the evaporator element located outside the refrigerated compartment, reduced energiapura is of the refrigeration apparatus, increased efficiency and significantly improves cooling or freezing the ability of the refrigeration apparatus.

In a variant freezer refrigeration compartment is a freezer compartment and cooled products - frozen products.

Given that refrigerated and frozen products generally should not undergo significant temperature fluctuations, and that, in particular, frozen foods should not be subjected to periodic thawing, the combination of the two elements of the evaporator, the first of which is located outside of refrigerating or freezing compartment and the second inside the refrigerator or freezer compartment, is particularly advantageous.

In particular, when laying a warm subject the product to freeze in the freezer compartment, which are already cold frozen foods, sufficient freezing capacity is particularly important in order to prevent thawing frozen food already in the freezer compartment.

Using two elements of the evaporator is cooled products are cooled not only outside but inside the refrigeration compartment. However, even at high cooling capacity when the refrigerant temperature at the evaporator outlet is significantly higher than its temperature at the inlet of the evaporator, especially quickly achieved ravnomerno the e temperature distribution inside the refrigerator or freezer compartment.

In addition, this method of supplying cold provides direct thermal contact with a cooled products, which improves the efficiency of the refrigeration apparatus.

In one embodiment, execution of the first element of the evaporator around refrigerating or freezing compartment. Thus the surface area of the first element of the evaporator may correspond to at least 50% of the outer surface of the refrigerating or freezing compartment.

For example, the first element of the evaporator may be in the form of a spiral evaporator. When this tube, which moves the evaporated refrigerant is wound around refrigerating or freezing compartment.

Himself refrigerating or freezing compartment may be made of plastic or metal, for example, from aluminum or aluminum alloy.

Best way, the first element of the evaporator is in good heat conducting contact with refrigerating or freezing compartment that allows you to minimize thermal resistance. For example, pipes for refrigerant soldered or welded to the refrigerating or freezing compartment, made of metal.

In one embodiment, the first and second elements of the evaporator are connected in series. Thus, the refrigerant circulating in the refrigeration circuit, the refrigeration apparatus, first flows through one element and is of soaring glider, and then through the other evaporator element.

It is also possible, in which the first and second elements of the evaporator are connected in parallel. This option enable advantageous from the point of view of minimizing the hydraulic resistance of the evaporator, which has a positive impact on the efficiency of the evaporator or the entire refrigeration circuit.

In the case of parallel refrigerant flow generated by the compressor is divided into two parts, the first part flows through the first element of the evaporator, and the second part through the second element of the evaporator. Both refrigerant flow together again before the compressor.

In the following embodiment, the second element of the evaporator is made in the form of a wire-tube evaporator. Wire-tube evaporator contains a tube for the evaporated refrigerant, curved in the form of a meander or spiral, as a rule, in the same plane. The tube contains elements that increase the surface area and improves the returns from the cold, for example, rods or plates.

The second evaporator best way is essentially flat or two-dimensional shape in order to minimize the volume in the refrigeration compartment. In particular, through the second evaporator can be carried out cold air in the refrigeration compartment.

In a special embodiment, the second element of the evaporator divides holodilny compartment horizontally. This flat second element of the evaporator can be placed under the stationary fixed shelf for refrigerated products. In particular, a shelf for refrigerated products are made in the form of a lattice to maintain convection cold inside the refrigerator compartment.

In the following embodiment, in the refrigeration compartment is placed a container for refrigerated products made from metal, in particular aluminum or aluminum alloy. Due to the fact that the container for refrigerated products made of metal, is provided by the effective transfer of cold from the first element of the evaporator to the cooling products.

In the following embodiment, the second element of the evaporator contains elements of heat transfer, in particular, cooling rods, fins or plates. Elements of heat transfer increase the surface area, giving the cold in refrigerating compartment, and thereby improve the heat transfer between the second element of the evaporator and cooled products.

Brief description of drawings

Other advantageous variants, which can be used separately or in any suitable combinations, are described in detail based on the accompanying figures illustrating the invention.

The implementation of the invention

1 schematically shows a variant of the refrigeration apparatus 1 is according to the invention in side section. Refrigerating apparatus 1 includes an external housing 2 and housing a refrigeration compartment 3, which in this case is performed in a variant of the freezer compartment. Freezer compartment 3 is cooled by the refrigerant circuit 6. The cooled products 5 can be stored in the freezing compartment 3 at a temperature lower than the temperature of the cooling medium.

Access to the freezer compartment 3 through the door 13; this door may open or close the freezing compartment 3. Freezer compartment 3 includes a container 9 for refrigerated products, which are made of aluminum alloy and, thus, facilitates the flow of cold from the first element 7 of the evaporator in the freezer compartment 3.

Refrigerant circuit 6 includes a compressor 11, which serves to compress circulating in the cooling circuit 6 of the refrigerant, the condenser 12, which is used for liquefying the compressed refrigerant with the heat in the environment, the evaporator 4, which is used for evaporation cooled and liquefied refrigerant to the impact of cold for cooling the freezing compartment 3. Tube 14 to provide refrigerant conducting fluid connection between the respective components 11, 12, 4 to form a refrigerant circuit 6.

The evaporator 4 contains the first element 7 of the evaporator and the second element 8 of the evaporator. The first element 7 of the evaporator from Agen outside of the freezing compartment 3 and its surrounds. The surface of the first element 7 of the evaporator corresponds to approximately 80% of the area of the outer surface of the freezing compartment 3, thus providing a tight thermal contact with the freezing compartment 3. The first element 7 of the evaporator is made in the form of spiral evaporator and contains a conductive refrigerant tube (not shown in the figure), which is wound around the freezing compartment 3.

The second element 8 of the evaporator is located inside the freezer compartment 3 and divides it horizontally. The second element 8 of the evaporator includes a heat transfer elements 10 having the form of a cooling rods or plates. These elements are designed to improve cold in the freezing compartment 3 and, thereby, on the cooled products 5. Due to the elements 10 of the heat transfer surface area of the second element 8 of the evaporator is greatly increased, thereby significantly reduced thermal resistance.

The first and second elements 7, 8 of the evaporator included in the refrigerant circuit 6 sequentially. Using a combination of the two elements 7, 8 of the evaporator is improved cooling or freezing the ability of the refrigeration apparatus 1, and by improving the uniform distribution of temperature inside the freezing compartment 3 improving the efficiency of the refrigeration apparatus 1.

The invention relates to a refrigerating apparatus 1, which contains esni building 2, at least one freezer compartment 3 for the storage of refrigerated products 5 and refrigerant circuit 6 to the evaporator 4 for cooling the freezer compartment 3 and the evaporator 4 contains the first element 7 of the evaporator and the second element 8 of the evaporator, and the first element 7 of the evaporator is located outside the freezer compartment 3 and the second element 8 of the evaporator is located inside the freezer compartment 3. Such refrigeration apparatus has particularly high efficiency and good cooling or freezing ability.

The LIST of DESIGNATIONS

1 refrigeration apparatus

2 external enclosure

3 freezer compartment

4 evaporator

5 refrigerated products

6 refrigerant circuit

7 the first element of the evaporator

8 the second element of the evaporator

9 the container for refrigerated products

10 elements of heat transfer

11 compressor

12 capacitor

13 the door

14 tube for refrigerant

15 insulating foam

1. The refrigeration apparatus (1), in particular a household refrigeration and/or freezing apparatus, which includes an external housing (2)at least one refrigeration compartment (3) for the storage of refrigerated products (5) and the refrigerant circuit (6) to the evaporator (4) for cooling the refrigerating compartment (3), an evaporator (4) contains the first element (7) of the evaporator and the second element (8) of the evaporator, and the first element (7) and is the soaring glider is located outside of the refrigeration compartment (3) and is in thermally conductive contact with him, and the second element (8) of the evaporator is located inside the refrigerator compartment (3), characterized in that the first element (7) of the evaporator is made in the form of spiral evaporator surrounds the refrigeration compartment (3) and contains conductive refrigerant piping, which is wound around the refrigeration compartment and are in heat-conductive contact with him, and the first element (7) of the evaporator and the second element (8) evaporator connected in series, with the refrigerant circulating in the cooling circuit (6) of the refrigeration apparatus of the first flows through one element of the evaporator and then through another element of the evaporator or included in parallel.

2. The refrigeration apparatus (1) according to claim 1, characterized in that the second element (8) of the evaporator is made in the form of a wire-tube evaporator.

3. The refrigeration apparatus (1) according to claim 1, characterized in that the second element (8) evaporator divides the refrigeration compartment (3) horizontally.

4. The refrigeration apparatus (1) according to claim 1, characterized in that the refrigerating compartment (3) includes a container (9) for cooled products made from metal, in particular aluminum or aluminum alloy.

5. The refrigeration apparatus (1) according to claim 1, characterized in that the second element (8) of the evaporator contains elements (10) heat transfer, in particular the cooling rods, fins or plates.

6. The refrigeration apparatus according to claim 1, featuring the the action scene, what refrigerating compartment (3) is made in a variant of the freezer compartment.



 

Same patents:

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