JP4893318B2 - refrigerator - Google Patents

Description

  The present invention relates to a defrosted water drainage structure in a refrigerator cooler.

  Conventionally, in this type of refrigerator, the installation surface of the inner box on which the dew tray is placed is flat (see, for example, Patent Document 1).

  Hereinafter, the conventional refrigerator will be described with reference to the drawings.

  FIG. 4 is a side sectional view showing a conventional refrigerator 1 described in Patent Document 1 and an exploded perspective view showing a configuration of a dew tray part, and an inner box 2 and an outer box 3 are filled between both of them. A cooler 5 is provided below the inside of the heat insulation box made of the foamed heat insulating material 4, and a defrosting cord heater 6 is disposed on the back of the cooler 5, and is removed below the cooler 5. A dew tray 7 for receiving frost water is provided. The dew tray 7 is placed on the flat surface of the inner box 2.

In the refrigerator configured as described above, frost adhering to the cooler 5 is heated by the defrosting cord heater 6, and the defrosted water discharged at the time of defrosting flows down to the dew receiving tray 7. Furthermore, the defrost water that has flowed down to the dew tray 7 is discharged to an evaporating dish (not shown) outside the refrigerator through a drain port 8 provided at the center of the dew tray 7, and is supplied to a compressor or the like (not shown). Evaporation is performed using heat generation.
JP 2002-340468 A

  However, in the conventional refrigerator, when the defrost water leaks for some reason without flowing down to the dew tray, the shape of the inner box on which the dew plate is placed is flat and there is no drainage path. After being diffused and cooled with cold air, it adheres as ice, or defrost water passes through the gap between the inner box and the dew tray, and further, moisture is contained in the foam insulation from the gap between the drain outlet and the inner box. It had the subject that efficiency fell.

  This invention solves the said conventional subject, and it aims at providing the refrigerator made into the structure by which the defrost water generate | occur | produced at the time of defrost is drained out of the store | warehouse | chamber reliably without immersing in an inner box. To do.

In order to solve the above-described conventional problems, the refrigerator of the present invention includes a dew receiving tray that is provided below the inner box of the inner box and receives defrost water from a cooler, and a defroster that is provided near the center of the dew receiving tray. and drainage tube to drain the water into the compartment outside the through hole in which the water distribution passage provided in the inner box extends, inwardly from the upper surface of the outer periphery abutting the outer periphery of the dew receiving tray is provided in said box with a extending portion which extends, and a drainage groove provided along the extending portion below the extending portion, the drainage groove is to be located above the surface around the through-hole It is.

As a result, the defrost water generated by the frost formation on the inner box or the side wall member is surely dropped into the dew receiving tray, so that it can be drained without leaking into the cabinet. For some reason, even when the defrost water flowing into the lower surface of the dew receiving tray, defrost water flooded into the refrigerator in order to be guided to the drainage grooves formed on both side walls, it can drainage without diffusing into the refrigerator The

  The refrigerator of the present invention can surely drain the defrost water to the outside without leaking to the foamed heat insulating material side, and can prevent a decrease in the heat insulation effect due to the ingress of water.

According to the first aspect of the present invention, a dew tray that is provided below the inner box and receives defrost water from the cooler and a dew tray that is provided near the center of the dew tray and drains the defrost water to the outside. and drainage tube, a through-hole in which the water distribution passage provided in the inner box extends, the extending portion extending inwardly from an upper surface of the peripheral to the outer periphery abutting the dew pan provided in said box And a drainage groove provided along the extension part below the extension part, and the drainage groove is located above the surface around the through hole, so that the extension part has a side wall. Even if the defrost water adhering to the member is surely dripped onto the dew tray without leaking to the outside of the dew tray, even if the defrost water flows into the lower surface of the dew tray for some reason, defrost water is formed on both side walls. in order to Ru guided to the drainage ditch, defrosted water through-holes near guided outward, foam insulation side It can be reliably drained without leaking.

The invention according to claim 2 is the invention according to claim 1, wherein a dewatering rib is provided on the back surface of the dew tray so that the defrost water flowing into the back side of the dew tray flows along the drain rib. It can drain into the drainage channel provided in

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the plate-like side wall member to which the cooler is fixed is fixed to the inner box in the vertical direction, and the lower end surface of the side wall member is Since it extends toward the inside of the dew receiving tray, the defrost water adhering to the side wall member is surely dropped onto the dew receiving tray without leaking to the outside of the dew receiving tray.

Invention of claim 4 is the invention according to any one of claims 1 to 3, the peripheral surface of the through hole, by which is located above the peripheral surface of the outer of said surfaces, dew Since the surface around the inner box through hole in the central part of the tray is formed higher than the outer peripheral surface, the defrost water in the vicinity of the through hole is guided outward and does not leak to the foam insulation side. Can drain reliably.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the drainage grooves are formed outside the surface around the through hole of the inner box, so that the surface around the through hole is formed. Since the defrost water that has flowed to the outside is drained out of the warehouse through the drainage groove, it is possible to prevent leakage to the foam heat insulating material side.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited to the embodiments.

(Embodiment 1)
FIG. 1 is a cross-sectional view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a front cross-sectional view of a dew tray and an inner box of the same embodiment, and FIG. 3 is a dew tray portion of the same embodiment. It is a disassembled perspective view which shows the assembly structure of.

  In FIG. 1, 30 is a refrigerator body, 31 is an outer box that forms a heat insulation box, 32 is a filled heat insulating material, and 33 is an inner box that forms the inner wall of the refrigerator body 30. . A freezer compartment 35 is provided below the refrigerator compartment 34 and is partitioned by a heat insulating partition wall 36. Reference numeral 37 denotes a cooler chamber disposed behind the freezer compartment. The cooler chamber 37 stores a cooler 38 and a defrost heater 39 below the cooler 38, and a defroster of the cooler 38 below the cooler 38. A dew receiving tray 40 for receiving defrosted water by the heater 39 is provided, and a water receiving tray 41 is provided below the dew receiving tray 40. A side wall member 42 that holds the cooler 38 is provided behind the cooler 38.

  In addition, a tubular drainage channel 46 for draining defrost water to the outside of the warehouse is provided near the center of the dew receiving tray 40, and the inner box 33 facing the drainage channel 46 has a through hole 45, and the through hole 45 The flat surface 47 that forms a gap is higher than the outer peripheral surface by forming a step 48.

  In addition, a plurality of draining ribs 44 are formed integrally on the back surface of the dew receiving tray 40 to form a predetermined space with the inner box.

  And the plate-like side wall member 42 which fixed the defrost heater 39 to the cooler 38 and the downward direction is fixed to the inner box in the opening part (not shown) provided in the inner box 33 in the vertical direction before filling the foam insulation. And the lower end surface of the said side wall member is arrange | positioned so that it may extend in the inner side direction of the said dew tray.

  Moreover, the extending part 51 is provided so that a part of the inner box 33 provided on the outer periphery of the dew receiving tray 40 may be located inward from the outer peripheral upper surface of the dew receiving tray.

Also it drains 4 9 inclined toward the front on the surface of the outer side of the periphery of the through hole 45 of the inner box 33 is provided.

  Further, side drainage grooves 50 inclined toward the front are integrally formed in the vicinity of both side walls of the inner box 33.

  About the refrigerator comprised as mentioned above, the operation | movement and an effect | action are demonstrated below.

  The frost attached to the cooler 38 is melted by energizing the defrost heater 39 at regular intervals, becomes defrost water falling from the cooler 38, flows down to the dew receiving tray 40, and drains at the center of the dew receiving tray 40. It flows from the mouth to the water tray 41 and is drained outside the warehouse. The side wall member 42 provided behind the cooler 38 is disposed so as to extend inside the dew receiving tray 40, and the inner box 33 provided on the left and right sides of the dew receiving tray 40 extends to the inside of the dew receiving tray 40 so as to extend. Since 51 is provided, the defrost water flowing along the side wall member 42 and the inner box 33 is surely dropped on the dew receiving tray 40. Even if the defrost water flows into the lower surface of the dew receiving tray 40 for some reason, it flows to the inside of the cabinet by the concave side drain grooves 50 provided on both wall sides of the inner box 33 on which the dew receiving tray 40 is placed, No water remains in the vicinity of the dew tray 40.

Further, a tubular drainage channel 46 is formed in the vicinity of the central portion of the dew receiving tray 40 so as to penetrate the through hole 45 provided in the inner box 33, and the flat surface 47 around the through hole 45 is formed on the outer side thereof. Since the step 48 is formed at a higher position, even if the defrost water flows into the vicinity of the center of the lower surface of the dew receiving tray 40 for some reason, the defrost water does not enter the foam heat insulating material 32 side from the through hole 45.

  Further, the drainage groove 49 formed by the step 48 allows the defrost water around the through hole 45 to flow into the chamber from the drainage groove 49 and the defrost water does not enter the foam heat insulating material 32 side, thereby reliably reducing the heat insulation effect. I can prevent it.

  For this reason, the drainage structure can be improved by the shape of the dew tray 40 and the inner box 33 without using a sealing material or the like for preventing the gap around the through-hole 45, thereby improving the assembling workability and the parts cost. It leads to reduction.

  Further, a draining rib 44 is integrally provided on the back side of the dew tray 40, and the defrost water flowing into the back side of the dew tray 40 flows along the draining rib 44 to a drain groove 49 provided in the inner box 33. Therefore, the defrost water adhering to the back surface of the dew tray can be drained efficiently. Moreover, the intensity | strength of the dew tray 40 itself can be raised.

  In the present embodiment, the through hole 45 forming surface positioned higher than the outer peripheral surface is described as a flat surface. However, as long as the through hole 45 can be positioned higher, the surface is not limited to a flat surface, and may be a curved surface or the like. It may be formed.

  As mentioned above, since the refrigerator concerning this invention can aim at the improvement of the drainage structure of defrost water with a simple structure, it can be applied also to the similar apparatus which has the drainage structure of defrost water.

Sectional drawing of the refrigerator in Embodiment 1 of the refrigerator by this invention Front sectional view of a dew tray and an inner box in Embodiment 1 of the refrigerator according to the present invention. The disassembled perspective view which shows the assembly structure of the dew tray part in Embodiment 1 of the refrigerator by this invention. (A) Side sectional view of a conventional refrigerator (b) Exploded perspective view of a conventional refrigerator

33 Inner box 38 Cooler 40 Dew tray 42 Side wall member 44 Draining rib 45 Through hole 46 Drainage channel 47 Flat surface 49 Drainage groove 50 Side drainage groove 51 Extension part

Claims (5)

A dew tray that is provided below the inner box and receives defrost water from the cooler, a tubular drainage channel that is provided near the center of the dew tray and drains the defrost water to the outside of the box, and the inner box a through hole in which the drain passage is provided to penetrate into, and extending portion extending inwardly from an upper surface of the peripheral to the outer periphery abutting the dew pan provided in said box, below the extending portion and a drainage groove provided along the extending portion, said gutter, refrigerators, characterized in that located above the plane of the periphery of the through hole. The refrigerator according to claim 1, characterized in that a draining rib on the back surface of the dew pan.   The plate-like side wall member to which the cooler is fixed is fixed to the inner box in a vertical direction, and a lower end surface of the side wall member extends inward of the dew tray. 2. The refrigerator according to 2. 4. The refrigerator according to claim 1 , wherein a surface around the through hole is located above a peripheral surface outside the surface . 5.   The refrigerator according to any one of claims 1 to 4, wherein a drainage groove is formed outside a surface around the through hole of the inner box.

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