RU2425299C2 - Refrigerator that comprises siphon - Google Patents

Abstract

FIELD: personal use articles.

SUBSTANCE: refrigerating device with an inner chamber, which is surrounded with a heat insulation body, a pipeline for condensate passes through the body and comprises a siphon, which is placed into an insulation layer of the body and is installed in the vertical wall of the body.

EFFECT: using this invention makes it possible to balance pressure between the chamber and the environment with the help of a simple and compact structure and eliminates the risk of microorganisms reproduction or occurrence of odours.

3 cl, 2 dwg

Description

Technical field

The present invention relates to a refrigerating apparatus with an inner chamber surrounded by a heat-insulating casing, in which the condensate conduit passing through the casing contains a siphon.

State of the art

A refrigeration apparatus of this kind is described, for example, in US Pat. No. 5,499,514. In this prior art refrigeration apparatus, the condensate pipe extends from the bottom of the evaporation chamber inside the refrigeration apparatus and passes directly into the engine compartment at the base of the refrigeration apparatus, where it enters the evaporation cup. Inside the engine compartment, the condensate pipe has a curved S-shape so that water can accumulate in the lower part of the pipe bend without flowing into the evaporation cup. This water prevents free air exchange between the device’s inner chamber and the environment through a pipeline, but allows a short-term return air flow into the inner chamber, for example, if the warm air entering the inner chamber when the door is open, cools down and causes a reduced pressure .

During operation, high temperatures may occur in the engine compartment of the refrigerator, in particular the temperature of the compressor housing located in it can often be from 70 to 80 ° C during operation. In a refrigeration apparatus known from US Pat. No. 5,499,514, the condensate conduit that runs in close proximity to the compressor is subject to high temperatures, which contribute to the growth of microorganisms and the formation of unpleasant odors. This can be a significant drawback if, when the pressure is equalized, air is sucked in through the contaminated water into the inner chamber of the refrigerator, or if contaminated water enters the evaporation cup during thawing. The disadvantage is that the condensate pipe occupies a large area in the engine compartment.

A siphon for a refrigeration apparatus is known from EP 1128141 B1, in which the pipe passes through a horizontal insulating layer of the housing and on the lower side of the insulating layer enters an inserted bowl in which water can accumulate so that it blocks the outlet of the pipe. This design is more compact than the one known from US 5499514, but even the water that accumulates in the bowl is exposed to high temperatures and the risk of microorganisms multiplying in it.

A pressure balancing device for freezing apparatus is known from EP 0 848 217 B1, which comprises a pipe vertically extending through the insulating layer and a float mounted on the protrusion of the pipe. The float may be raised from its place by condensate flowing from above from the inner chamber of the freezer, so that condensate can flow past the float. Also, in the event of a decrease in pressure in the inner chamber, the float may be raised from its place and air may enter the inner chamber. This design is very compact, and since it does not contain standing water. However, there is a danger of a malfunction if the float freezes to its place or, due to impurities contained in the effluent condensed, sticks to its place or they prevent dense closure.

Disclosure of invention

The objective of the invention is the creation of a refrigeration apparatus that provides trouble-free pressure equalization between the inner chamber and the environment using a simple and compact design and eliminates the risk of multiplication of microorganisms in it or odors.

This problem is solved using a refrigeration apparatus containing the features of claim 1 of the claims. Since the siphon of this refrigeration unit is placed in the insulating layer of the casing, the water contained in it is protected from excessive heat, so that the reproduction of microorganisms remains low. In addition, since the siphon is placed in an insulating layer, it is protected from light, which also contributes to the multiplication of microorganisms. The location of the siphon in a cooler place eliminates the risk of drying out and the subsequent failure of the siphon associated with it.

The siphon can be formed with the help of bowls and pipes that enter into each other, but due to the simplicity and small height, a siphon in the shape of a curved S-shaped tube is more preferable because it fits comfortably into the wall of the refrigerator body.

The location of the siphon closer or further from the external warm or internal cold side of the insulating layer may be set depending on the intended operating temperature of the inner chamber. To completely eliminate freezing of the liquid in the siphon, the location of the siphon closer to the outer side of the insulating layer is generally preferable.

Brief commentary on the drawings

Further features and advantages of the invention are apparent from the following description of embodiments referring to the accompanying drawings. They show the following.

Figure 1: Axonometric image of a part of the housing of the refrigeration apparatus according to the first embodiment of the invention.

Figure 2: A longitudinal section of the housing of the refrigeration apparatus according to a modified embodiment.

The implementation of the invention

Figure 1 shows a schematic axonometric view of the lower half of the housing 1 of the refrigeration apparatus. The door of the refrigerator is not indicated in the figure. Each of the walls 2, 3, 4 of the casing is formed using the transparent outer sheath 5 shown in the figure, assembled from metal or plastic elements, integral, common to all walls of the inner sheath 6 and made of foam material of an insulating layer located between the inner and outer sheaths 6, 5. At the base of the rear wall 3 there is a niche 7, which is intended for the location of the compressor, the evaporation bowl, and possibly also the condenser. The evaporator located in the upper part of the housing 1 is not represented. For example, we can talk about a tiled evaporator located in the upper region of the rear wall 3 on the inner casing 6, or about an evaporator without frost frost, which, for example, can be located in the chamber under the upper case cover or in a horizontal separating wall between two refrigeration body cameras.

Pipeline 8 for condensate, which leaves from this evaporator, goes down in the insulating layer of the wall 3 and is partially shown in the figure. Between two vertically directed parts of the pipeline 8 are two sections 9, 10 that are curved oppositely to each other and which form a siphon. The pipe 8 may be made entirely of bent metal or plastic pipe;

or straight sections and bends 9, 10 can be made separately and inserted into each other. All sections of the condensate pipe 8 lie in the same plane parallel to the outer and inner casing of the rear wall so that the siphon depth is as small as possible, and to reduce the reducing effect of the insulation of the rear wall due to the presence of the condensate pipe 8.

The condensate pipe 8 enters a niche 7, in which a bowl for condensate accumulation and evaporation, not shown in FIG. 1, is provided.

As shown in a horizontal section of the walls 2, 3, 4 in FIG. 1, the condensate pipe 8 extends close to the outer skin 5, so that it is more insulated from the inner chamber of the housing 1 than from the environment. This prevents freezing of standing water in the bend 9 of the condensate pipe 8, even when the temperature of the inner chamber is significantly lower than 0 ° C. If the temperature of the inner chamber in the refrigerator does not fall below 0 ° C, the condensate pipe 8 can also be located in close proximity to the inner casing 6 to achieve, in this case, the lowest possible temperature of the water in the bend 9 to prevent evaporation and reproduction of microorganisms.

Figure 2 shows a schematic section of a niche 7 and its surrounding parts in accordance with slightly modified embodiments of the invention. Here, the condenser conduit 8 also extends substantially in close proximity to the outer casing 5 of the rear wall 3. Only near the lower end does the conduit 8 deviate from its direction in a plane parallel to the outer casing 5 and passes to the front side of the housing 1 through a horizontal section walls 11 above the niche 7, to subsequently exit in the center above the evaporation bowl 12 in the niche 7.

The evaporation bowl 12 is mounted in close thermal contact with the compressor 13.

Instead of being located in the rear wall 3, the condensate pipe 8 can be located in the side walls 2, 4. This can be a significant advantage of the refrigeration unit, in which the compressor and the evaporation bowl can be located in the base area under the housing and the evaporation bowl of which is located near the front walls of the refrigerator.

Claims (3)

1. A refrigerator with an inner chamber surrounded by a heat-insulating casing (2, 3, 4), in which the condensate pipe (8) passes through the casing (2, 3, 4) and contains a siphon (9, 10), characterized in that the siphon (9, 10) is placed in the insulating layer of the housing (2, 3, 4) and is located in the vertical wall (3) of the housing. 2. The refrigeration apparatus according to claim 1, characterized in that the siphon (9, 10) is made in the form of a curved S-shaped tube (8). 3. The refrigeration apparatus according to one of claims 1 and 2, characterized in that the siphon (9, 10) is located near the outer side (5) of the insulating layer.

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