RU2374574C2 - Refrigerating device with water drain device - Google Patents

Abstract

FIELD: heating systems.

SUBSTANCE: housing includes internal chamber, external wall, as well as intermediate space between external wall and internal chamber, which is filled with insulation material; at that, refrigerating device includes water drain line passing from the deepest point of the bottom of internal chamber through intermediate space outwards and drain line section extended from the housing. Extended section of drain line is connected to the tube covered with insulation material and tightly isolated from it. At the deepest point of the bottom there formed is connection pipe which protrudes downwards and which is the integral part of internal chamber. One end of connection pipe the free end of which is equipped with drain hole is immersed into the tube.

EFFECT: simplifying the refrigerator design and improving its operating reliability.

14 cl, 12 dwg

Description

Technical field

This invention relates to a refrigerating apparatus, in particular a freezer, with a drain for draining water from the internal cavity of the refrigerating apparatus, which accumulates there, especially during thawing.

State of the art

Conventional refrigeration units with a flat-bottomed inner chamber have the problem that when thawing, the accumulated water (condensate) is collected at the bottom of the inner cavity and this water must be wiped out in order to prevent it from spreading over the entire width of the leading edge and leak to the floor, which makes defrosting procedure is unnecessarily laborious.

In order to solve this problem, a refrigeration apparatus was proposed in DE 8906085 U1, in which a drain pipe (drain line) is connected at the lowest point of the inner tank, which passes through the intermediate space of the casing filled with insulating material and which contains a housing which can be pulled out or pulled out of the housing refrigeration apparatus section of the drain line, so that it becomes possible to install a container for collecting flowing melt water under the extended end of this section of the drain line.

The drain line of this conventional apparatus contains a vertical section that extends through the insulating material, and an essentially horizontal pipe section that includes a pull-out section of the drain line and extended beyond the outer wall of the device body. This arrangement requires providing an intermediate space between the outer wall of the device body and the substrate on which the refrigeration apparatus is mounted, which is wide enough to accommodate the above horizontal pipe section. Since the height of the furniture niche into which the known cooling device is installed is generally rigidly set, this valuable interior space is lost due to this intermediate space; in other words, the ratio between the internal volume used and the volume of the furniture niche is disadvantageous.

Disclosure of invention

The objective of the invention is to provide a refrigeration apparatus with a drain line for water, which has a retractable section of the drain line, in which the drain line does not worsen or at least not significantly worsen the ratio between the occupied area of the device and the useful volume of its internal space .

According to the first claim, the problem is solved in that the extendable or extendable portion of the drain line, i.e. a pipeline for draining water, inserted into a pipe sealed in an insulating material and hermetically isolated from it. This placement of the drain line section makes it unnecessary to plan an intermediate space under the body of the refrigeration unit. The insulation (sealing) of the tube prevents, on the one hand, the penetration of water into the insulating material, which could adversely affect its insulating abilities. On the other hand, if the insulating material is foam that fills the intermediate space, the foam is prevented from penetrating into the tube during foaming and blocking the extendable or extendable portion of the drain line. The position of the tube surrounded by foam is firmly fixed by the hardened thermally insulating foam.

If the inner chamber, as is usually the case with completely inserted inner chambers, has a flange on the side of the door along the entire perimeter, the tube containing the extendable or extendable section of the drain line is preferably connected to the outlet located on the flange. This makes it possible to completely install the drain line on the inner chamber before attaching the housing of the refrigeration unit, so that mounting the housing in this regard is no more time consuming than a refrigeration unit that does not have a drain line.

At the deepest point of the bottom, a downwardly extending connecting pipe is preferably located, one end of which is immersed in the tube. On the one hand, the connecting pipe can be formed with minimal cost in the manufacture of the inner chamber by deep drawing; on the other hand, it is advisable to use the end of the connecting pipe immersed in the tube as a stop, which limits the freedom of movement of the extended section of the drain line.

The extendable (extendable) section of the drain line contains an inner section and a head part that is not inserted into the tube that are conveniently movable inside the tube, so that a user can grasp it to pull the inner section out of the tube.

In the retracted state of the drain line section, this head is preferably located in the recess of the housing, preferably in the recess of the circumferential flange of the inner chamber. Since this head portion does not protrude forward from the front wall of the cabinet, no fitting of the door of the refrigerator to the extendable portion of the drain line is required, so that the same door model can be used for both the refrigerator according to the invention and a traditional refrigerator without a drain line .

In order to make the drain line section easy and easy to handle, and, on the other hand, to maintain an almost completely closed, easily cleaned surface of the refrigerator body, the dimensions of the head should be chosen so that it fills the cross section of the recess with the exception of two notches for the user's fingers. For the same reason, it is preferable that the head part in the retracted state goes flush with the outer (front) surface framing the recess.

The head part may have a removable cap in order to prevent unwanted moisture. Alternatively, the head can also be movable with respect to the inner section between the first position in which it blocks the inner section and the second position in which it frees the passage from the inner section to the outlet.

In this case, it is particularly preferable if the head is inserted into the recess of the housing only in the specified first position.

Brief List of Drawings

Other features and advantages of the invention will be apparent from the following description of layout examples with reference to the attached drawings. They depict:

figure 1 is a perspective view of the inner chamber of the refrigeration apparatus according to the invention;

figure 2 is a partial section through the bottom of the inner chamber of figure 1 and the adjacent side to it, as well as through the drain line designed on the inner chamber;

figa-3C - the stages of installation of the drain line;

4A-4C show steps for using a drain line according to a first embodiment;

5A, 5B show steps for using a drain line according to a second embodiment; and

figure 1 is a perspective view of the inner chamber of the refrigeration apparatus according to the invention;

FIG. 6 is a sectional view of an embodiment of the extendable portion of the drain line, as compared with FIGS. 5A, 5B.

The implementation of the invention

Figure 1 shows a perspective view of the inner chamber 1 of a refrigerator according to the invention. The open front side of the inner chamber 1 is surrounded by a ledge 2, protruding outward from the side walls 3, the cover 4 and the bottom 5. In the bottom 5, grooves 6 are pressed to drain the water, which converge together at the deepest point near the front edge of the bottom 5. At this deepest at one point, the connecting pipe 7 is permanently formed, which, as is clearly seen in the context of FIG. 2, is part of a drain line for water accumulating in the grooves 6.

Under the bottom 5, a recess 8, which is open on the front side, is squeezed out in the side 2, in the bottom of which a hole 9 is cut.

Figure 2 shows a section through the bottom 5 and through the adjacent side 2 in the depth direction of the inner chamber 1 in the plane passing through the connecting pipe 7 and the recess 8. In the hole 9 is fixed and sealed by bayonet connection one of the ends of the tube 10, the end 11 which, remote from the hole 9, is hermetically closed. The connecting pipe 7 passes into the inner part of the tube 10 through the side drilled hole. A drain hole (drain) at the free end of the connecting pipe 7 can be optionally installed either immediately after the manufacture of the inner chamber 1, or after mounting the pipe 10 in the connecting pipe 7. Between the pipe 10 and the groove 6 for water drainage, from which the connecting pipe 7 , a surrounding connecting pipe 7 in the form of a sealing collar is provided, mounted on the connecting pipe 7 with a power circuit, a sealing gasket 12 that tightly closes the side opening 13 of the tube 10 from roniknoveniya foam therein. The connecting pipe 7 itself is closed by means of a removable plug 14.

The movable section 15 of the drain line inserted into the tube 10 is shown in the drawing in the fully retracted position. The inner section 16 of the drain line section 15 inserted into the tube 10 in this thrust position is made in the form of an upward groove or pipe, in the wall of which a longitudinal groove 17 is cut, into which the end of the connecting pipe 7 enters. The dimensions of the rear end wall 18 of the inner section 16 are selected as that when pulling out the drain line section 15, it abuts against the end of the connecting pipe 7 and thus determines (not shown in the drawing) the external thrust position of the drain line section 15. In addition, the width of the longitudinal groove 17 is consistent with the outer diameter of the connecting pipe, as a result of which the drain line section 15, due to the connecting pipe 7, moves without rotation for the full extension (stroke) length of the drain line section.

The head part 19 of the movable section 15 of the drain line, which in FIG. 2 occupies a position in the recess 8, is formed by a section of the tube, one-piece adjacent to the inner section 16, and put on the open end of this tube of the cover 20.

In order to defrost the refrigeration unit with the inner chamber 1 shown here, the drain line section 15 is pulled out, the cover 20 is removed, a collection tank (not shown in the drawing) is placed under the drain line section opening and the plug (stopper) 14 is removed, so that water from the groove 6 may drain along section 15 of the drain line into a collection tank.

Figures 3A through 3C illustrate the steps for assembling a drain line according to a preferred embodiment of the invention. FIG. 3A shows a front view of the recess 8 of the flange 2, as well as a connecting pipe 7 with a gasket 12 put on it. This view is shown from the side of the foamed insulating material adjacent to the wall of the inner chamber 1 in a direction parallel to the longitudinal axis of the tube 10 when it is fully mounted. The bottom of the recess 8 is perpendicular to this direction. The hole 9 has the shape of a circle, which is expanded by two recesses located on opposite sides along the perimeter.

The tube 10 has, at its outer end, a flange 21 complementary to the shape of the hole 9, which in the position of the tube 10 shown in FIG. 3A, with the hole 13 facing the side, can be advanced through the hole 9 of the inner chamber 1 until the circumferential rib 22 of the tube 10 does not abut against the wall of the recess adjacent to the foam. Since the rib 22 in the view of FIG. 3B closes the flange 21, the latter is shown in the drawing by a dashed line. The distance between the flange 21 and the rib 22 corresponds to the wall thickness in the bottom of the recess 8, so that the tube 10 in the position in FIG. 3B can rotate around its longitudinal axis and clamps the bottom of the recess 8 between the flange 21 and the rib 22. In the position in FIG. 3B, contact between the end of the connecting pipe 7 and the tube 10 is prevented; the latter assumes a substantially horizontal position parallel to the viewing direction. Therefore, when, due to the rotation of the tube 10, the bottom of the recess 8 is clamped between the flange 21 and the rib 22, the collar 2 is subjected to a bending stress, which tends to change the position of the tube 10. As soon as the tube 10 rotates, its opening 13 is located at the end of the connecting pipe 7 , the tube 10 deviates upward under the influence of this bending stress and is pressed against the sealing gasket 12, while the connecting pipe 7 enters the tube 10. Thus, with a small number of manipulations, the anchor to eplenie (clip) of the tube 10 in the recess 8 on the one hand and the seal between the tube 10 and the connecting pipe 7 - on the other.

Figures 4A-4C illustrate the use of a drain line according to the invention. Typically, the sliding section of the drain line 15 is completely retracted into the tube 10 and, respectively, into the recess 8 of the flange 2, and the front wall of the lid 20 is flush with the flange 2. The grooves (recesses) 23 on the opposite boundary regions of the lid 20 allow two fingers to hold the lid 20 and extend it together with the extension section 15 of the drain line to the position shown in figv. In this position, the longitudinal groove 17, into which the connecting pipe 7 is inserted, protrudes slightly outward from the recess 8. When the extension section 15 of the drain line reaches its external stop position, determined through the contact between the rear wall 18 and the connecting pipe 7, the cover 20 is removed by means of a further pulling, as can be seen in figs. After the plug (plug) 14 is removed from the connecting pipe 7, water from the inner chamber can drain through the drain line section 15 into the collection tank placed under it.

Figure 5A shows a modified embodiment of a drain line in the corresponding extended state of Figure 4B. In the retracted state, the drain line in this embodiment is similar to the drain line from FIG. 4A, so that this figure can be referenced. The head part 19 in this embodiment is not made in the form of a removable cover, but contains a rigid plate 24, which can be made of the same material as the inner chamber, and on which a sleeve 25 is cut notched from the side, which is indicated by a dotted line in the drawing line, since it is hidden behind the plate 24, namely in the inner part of the plot 15 of the drain line.

Section 15 of the drain line at its lower part is also provided with a slot 26, so that when the plate 24 is rotated 90 °, as shown in FIG. 5B, the slot of the sleeve 25 and the slot 26 can be aligned and water can drain from the portion 15 of the drain line.

The plate 24 can be completely recessed in the recess 8 in only one position in which the slots of the sleeve 25 and the drain line section 15 do not overlap. If the plate 24 is in front of the surface of the side 2, it prevents the door of the refrigerator from closing. Therefore, the refrigeration unit cannot be erroneously put into operation without closing the drain line.

FIG. 6 shows a modification of the extension portion 15 of the drain line of FIG. 5A, in a position corresponding to FIG. Here, the sleeve 25 is surrounded by the inner section 16, and water can flow out through the overlapping drilled holes 27, 28 of the inner section 16 and the sleeve 25, respectively. The fitting 29 located at the hole 28 of the sleeve 25 prevents water droplets from flowing down the bottom wall of the sleeve 25 and fall past the collection tank.

Claims (14)

1. A refrigerating apparatus with a housing having a door opening, the housing comprising an inner chamber (1), an outer wall, and an intermediate space filled with insulating material between the outer wall and the inner chamber (1), wherein the refrigerating apparatus comprises a passage from the deepest point the bottom (5) of the inner chamber (1) through the intermediate space to the outside, a drain line (7, 10, 15) for water and a drain line section (15) pulled out from the housing, and a draw-out section (15) of the drain line is inserted into the insulation material and a tube (10) hermetically isolated from it, characterized in that at the deepest point of the bottom (5), a connecting pipe (7) protruding downwardly formed is integral to the inner chamber (1), one end of the connecting pipe (7), equipped with a drain hole at its free end, immersed in the tube (10). 2. The refrigeration apparatus according to claim 1, characterized in that the connecting pipe (7) is made by deep drawing in the manufacture of the inner chamber. 3. The refrigeration apparatus according to claim 1 or 2, characterized in that the connecting pipe (7) is immersed in the pipe (10) through a section of the wall of the pipe (10), which is essentially adapted to the contour of this connecting pipe. 4. The refrigeration apparatus according to claim 3, characterized in that the end of the connecting pipe (7) restricts the freedom of movement of the extendable section (15) of the drain line in the tube (10). 5. The refrigeration apparatus according to claim 4, characterized in that a sealing gasket (13) is located between the connecting pipe (7) and the tube (10). 6. The refrigeration apparatus according to claim 5, characterized in that the sealing gasket (12) surrounds the connecting pipe (7) in the form of a sealing collar, and the slot is similar to the casing. 7. The refrigeration apparatus according to claim 1, characterized in that the extendable drain line section (15) has an inner section (16) that is movable in the tube (10) and a head part (19) that is not inserted into the tube (10), and in the retracted state section (15) of the drain line, this head part (19) is located in the recess (8) of the housing. 8. The refrigeration apparatus according to claim 7, characterized in that the head part (19), with the exception of two recesses (23) for the fingers, fills the cross section of the recess (8). 9. The refrigerator according to claim 8, characterized in that the head part (19) is provided with a cover (20) with grooves (23) made on opposite boundary areas of the cover and allowing two fingers to hold the cover. 10. The refrigeration apparatus according to one of claims 7 to 9, characterized in that the head part (19) in the retracted state is mounted flush with the outer surface of the housing framing the recess (8). 11. The refrigeration apparatus according to claim 10, characterized in that the head part (19) comprises a removable cover (20). 12. The refrigeration apparatus according to one of claims 7 to 10, characterized in that the head part (19) is movable relative to the inner section (16) between the first position in which it blocks the inner section (16) and the second position, in which it frees the passage from the inner section to the outlet. 13. The refrigeration apparatus according to claim 12, characterized in that the head part (19) is configured to be installed in the recess (8) of the housing only in the first position. 14. The refrigeration apparatus according to claim 13, characterized in that the drain line section (15) is provided with a slot (26) on its lower part, and the head part (19) contains a plate (24) on which a sleeve (25) is cut sideways so that when the plate (24) is rotated 90 °, the slot of the sleeve (25) and the slot (26) of the drain line section (15) can be aligned and water can drain from the drain line section (15).

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