JP6695022B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator, and more particularly, to a structure for returning cold air to a cooling chamber.

  Generally, a refrigerator has a refrigerating room, a freezing room, a vegetable room, etc. arranged from the top, and cold air is generated in a cooling room at the back of the freezing room and supplied to the refrigerating room, the freezing room, the vegetable room, etc. by a cooling fan. To cool the food in each room. Then, the cool air after cooling each chamber returns to the cooling chamber, is cooled, and circulates again to each chamber (for example, refer to Patent Document 1).

  FIG. 14 shows the refrigerator described in Patent Document 1, and a refrigerator body 101 is provided with a refrigerating compartment 102, a freezing compartment 103, a vegetable compartment 104, and the like from the top, and a cooling compartment 105 at the back of the freezing compartment 103. A cooler 106 is provided in the air conditioner, cool air is generated by the cooler 106, and the cool air is supplied to each of the chambers by a cooling fan 107 to be cooled.

  Then, the cool air after cooling the respective chambers is returned to the cooling chamber 105, cooled by the cooler 106, and circulated again to the respective chambers.

  Here, the cold air return duct 108 after cooling the refrigerating compartment 102 is provided along with the vegetable compartment cold air advancing duct 109 on the side of the cooling compartment 105, and the cool air after cooling the refrigerating compartment 102 is the return air duct 108. It returns to the cooling chamber 105 via.

JP, 2015-25589, A

  However, in the return duct 108 of the refrigerator described in Patent Document 1, the return duct wall 108a is provided between the cooling chamber 105 and the return duct 108 as shown in the view seen from above the tip of the dashed arrow in FIG. The cool air that protruded and returned to the cooling chamber 105 was obstructed by the return duct wall 108a and biased toward the rear portion of the cooling chamber 105.

  Therefore, there is a problem that the return cool air from the return duct 108 flows unevenly toward the rear part of the cooler 106, and the cooling efficiency of the cool air in the cooler 106 deteriorates. There was also a problem that the ventilation resistance of the returned cool air also increased.

  In addition, 110 shown in the above-mentioned figure is a cover of a defrost heater (not shown) arranged in the lower part of the cooling chamber 105.

  The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a refrigerator that improves the cooling efficiency by improving the flow of return cool air to the cooling chamber.

  In order to achieve the above-mentioned object, the present invention expands toward the cooling chamber side at the cooling chamber side end portion of the guide path that communicates between the cooling chamber and the cool air return duct provided on the side portion of the cooling chamber. The configuration is such that an inclined enlarged portion is provided.

  As a result, the return cool air from the cool air return duct is guided to the inclined widening portion and uniformly returns to the cooling chamber, and as a result, the cool air is evenly dispersed in the cooler provided in the cooling chamber to cool the cooler. Efficient cooling is possible by effectively utilizing the entire equipment. Moreover, since the cool air expands smoothly and returns to the cooling chamber, the ventilation resistance is reduced.

  With the above-described configuration, the present invention can increase the cooling efficiency of the cooler and at the same time reduce the ventilation resistance, and can provide a refrigerator with high cooling efficiency.

Front view of the refrigerator according to Embodiment 1 of the present invention Vertical sectional view of the refrigerator in the first embodiment Explanatory drawing which shows the principal part of the refrigerator in the same Embodiment 1. The front view which shows the cooling chamber part of the refrigerator in the same Embodiment 1. Exploded perspective view showing a refrigerating compartment portion of the refrigerator in the first embodiment The perspective view of the partition plate which the refrigerator compartment duct and the vegetable compartment cold air passage duct of the refrigerator in the same Embodiment 1 penetrate. Exploded perspective view of the partition plate in FIG. The disassembled perspective view of the branch unit incorporated in the partition plate in FIG. The perspective view which shows the cooling chamber block of the refrigerator in the same Embodiment 1. Exploded perspective view showing a partition plate that constitutes the bottom of the freezer compartment and the cooling compartment of the refrigerator in the first embodiment FIG. 3 is a perspective view showing a guide path portion that connects the cooling chamber of the refrigerator and the cold air return duct of the refrigerator in the first embodiment. The top view which shows the guideway part which connects the cooling room of a refrigerator and the refrigerating room cold air return duct in the same Embodiment 1. FIG. 3 is an enlarged plan view of a guide path portion that connects the cooling chamber of the refrigerator and the cold air return duct of the refrigerator in the first embodiment. Cross section of conventional refrigerator

A first aspect of the present invention relates to a refrigerator main body in which a refrigerating room, a freezing room, and a vegetable room are arranged from the upper portion, a cooling room for generating cold air to be supplied to the refrigerating room, the freezing room, and the vegetable room, and cold air from the cooling room. A cooling fan that supplies the refrigerating compartment, the freezing compartment, and the vegetable compartment, a cool air return duct that returns the cool air that has cooled the refrigerating compartment to the cooling compartment, and a vegetable compartment cold air that supplies the cool air from the cooling compartment to the vegetable compartment. and a forward duct, the cool air return duct and the vegetable compartment cool air forward duct is a refrigerator that is provided on the side of the cooling chamber is polymerized arranged in the longitudinal direction, the front Kihiya vapor return duct taxiway And a side wall of the cooling chamber, and at the end of the guideway on the side of the cooling chamber, an inclined enlarged portion that inclines a portion of the vegetable compartment cold air going duct and expands toward the cooling chamber side is provided. The inclined enlarged portion is formed at a position where the outer edge of the fin of the cooler provided in the cooling chamber fits within the inclined extension line of the inclined enlarged portion .

  As a result, the return cool air from the cool air return duct is guided to the inclined widening portion and uniformly returns to the cooling chamber, and as a result, the cool air is evenly dispersed in the cooler provided in the cooling chamber to cool the cooler. Efficient cooling is possible by effectively utilizing the entire equipment. Moreover, since the cool air expands smoothly and returns to the cooling chamber, the ventilation resistance is reduced. Also, by connecting with the slope expansion part, the return of cool air can be made smooth and uniform, and the return cool air flowing into the cooling chamber along the slope of the slope expansion part will surely come into contact with the fins of the cooler. The efficiency can be further improved.

The second aspect, in the first aspect, cold air returning bottom surface of the induction path and the bottom surface of the duct is a configuration of forming an inclined surface which becomes lower direction toward the cooling chamber.

As a result, even the returned cold air that flows down the cold air return duct in the refrigerating room and changes its direction at a substantially right angle into the cooling room has a gentle flow, and in this respect also, the ventilation resistance is small. Further, in addition to the horizontal expansion effect of the inclined expansion portion, the vertical expansion effect can be obtained with respect to the flow of the return cool air to the cooler, and the cool air returning to the cooling chamber is evenly distributed to the cooler. As it is dispersed, the entire cooler can be effectively used for efficient cooling.

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

(Embodiment 1)
1 is a front view of a refrigerator according to Embodiment 1 of the present invention, FIG. 2 is a vertical cross-sectional view of the refrigerator, FIG. 3 is an explanatory view showing a main part of the refrigerator, and FIG. 4 shows a cooling chamber portion of the refrigerator. The front view, FIG. 5 is an exploded perspective view showing the refrigerating compartment of the refrigerator, FIG. 6 is a perspective view of a partition plate through which the refrigerating compartment duct and the vegetable compartment cold air passage duct of the refrigerator penetrate, and FIG. 7 is a partition plate in FIG. FIG. 8 is an exploded perspective view of FIG. 6, and FIG. 8 is an exploded perspective view of a branch unit incorporated in the partition plate in FIG.

  9 is a perspective view showing a cooling chamber block of the refrigerator, FIG. 10 is an exploded perspective view showing a freezing chamber of the refrigerator and a partition plate constituting the bottom of the cooling chamber, and FIG. 11 is a cooling chamber of the refrigerator and refrigeration. FIG. 12 is a perspective view showing a taxiway portion communicating with the room cold air return duct, FIG. 12 is a plan view showing a taxiway portion communicating the cooling chamber of the refrigerator with the refrigerating room cold air return duct, and FIG. 13 is the first embodiment. FIG. 3 is an enlarged plan view of a guide path portion that connects the cooling chamber of the refrigerator and the cold air return duct of the refrigerator in FIG.

  1 to 8, the refrigerator according to the present embodiment includes a refrigerator main body 1 having an open front, and the refrigerator main body 1 includes a metal outer box 2, a hard resin inner box 3 and the outer box. A foam insulation material 4 such as urethane is foam-filled between the box 2 and the inner box 3.

  Further, a plurality of storage chambers are formed in the refrigerator main body 1 by partition plates, and each of the storage chambers has a rotary or drawer type door 5, 6, 7 which adopts the same heat insulating structure as the refrigerator main body 1. Can be opened and closed freely.

  The storage room formed in the refrigerator main body 1 includes a refrigerating room 8 at the top, a switching room 9 under the refrigerating room 8 that can switch temperature zones, and an ice making room 10 provided beside the switching room 9. And a freezing compartment 11 provided below the switching compartment 9 and the ice making compartment 10 and a vegetable compartment 12 further below the freezing compartment 11.

On the back surface of the freezing compartment 11, there is a cooling compartment 14 formed by partitioning the upper part of the rear part of the freezing compartment partition plate 19 by a partition wall 20, a cooler 15 for generating cold air, and a cooling fan 16 for supplying cold air to each compartment. Further, below the cooler 15, a defrosting means 17, a cover 17a thereof and a defrosting water drain pan 17b are installed.

  The cooler 15 constitutes a refrigeration cycle in which a compressor 18, a condenser (not shown), a heat radiation pipe (not shown) for heat radiation, and a capillary tube (not shown) are annularly connected. Therefore, cooling is performed by circulating the refrigerant compressed by the compressor 18.

  The cold air generated by the cooling chamber 14 is supplied to the freezing chamber 11 and the ice making chamber 10 and the switching chamber 9 beside it via the freezing chamber damper 22 provided in the partition wall 20 forming the cooling chamber 14, and FIG. It is supplied to the refrigerator compartment 8 and the vegetable compartment 12 via the refrigerator compartment duct 23 and the vegetable compartment cold air outgoing duct 24 branched from the middle of the refrigerator compartment duct 23.

  The refrigerating compartment duct 23 is formed upward from the refrigerating compartment 14 toward the refrigerating compartment 8 and penetrates the refrigerating compartment partition plate 25 for partitioning the refrigerating compartment 8 from the ice making compartment 10 and the switching compartment 9 beside the refrigerating compartment 8. The vegetable compartment cold air passing duct 24 is branched at the penetrating portion of the refrigerating compartment partition plate 25 while being extended to the rear surface of the compartment 8. Further, the vegetable compartment cold air outgoing duct 24 is formed downward from the branch portion toward the vegetable compartment 12, and passes through the side portion of the cooling chamber 14 to form an opening 24a on the back surface of the vegetable compartment 12.

  The refrigerating compartment duct 23 and the vegetable compartment cold air outgoing duct 24 are branched by a branching unit 26 shown in FIG. The branch unit 26 has a refrigerating compartment duct 27, a vegetable compartment cold air advancing duct portion 28, and a refrigerating compartment cold air returning duct portion 29, and a vegetable compartment damper 30 is incorporated in the vegetable compartment cold air advancing duct portion 28 and above it. A lid 31 is attached to the vegetable compartment and the duct 28 for cooling air in the vegetable compartment is closed to form a unit.

  As shown in FIG. 7, the branch unit 26 in the unitized state is sandwiched between the lower plate 32 and the upper plate 33 of the refrigerating compartment partition plate 25 so that foam insulation is provided between the lower plate 32 and the upper plate 33. The material is filled and foamed to be integrated with the rear portion of the refrigerator compartment partition plate 25.

  The refrigerating compartment duct part 27 provided in the branching unit 26 is connected to the refrigerating compartment duct 23 on the rear side of the refrigerating compartment via the refrigerating compartment damper 34 at the upper end opening portion thereof, so that the cold air generated in the cooling compartment 14 is refrigerated. It is supplied to the refrigerator compartment 8 from the refrigerator compartment duct 23 via the damper 34.

  In addition, the vegetable compartment cold air outgoing duct portion 28 provided in the branch unit 26 is connected to the downward vegetable room cold air outgoing duct 24 shown in FIG. 3, and the cold air generated in the cooling chamber 14 is directed to the upward facing portion of the refrigerating compartment duct 23. It is branched from and is supplied to the vegetable compartment 12 through the vegetable compartment damper 30 from the downward direction of the downward vegetable compartment cold air passage duct 24.

  Further, the refrigerating compartment cold air return duct portion 29 provided in the branch unit 26 is a side portion of the cooling compartment 14 shown in FIG. The cold air after cooling the food in the refrigerating compartment 8 is circulated back to the cooling compartment 14 through the refrigerating compartment cold air return duct 35.

  As shown in FIG. 5, the refrigerating compartment damper 34 is provided between the duct inner plate 231 and the duct decorative plate 232 forming the refrigerating compartment duct 23 between the refrigerating compartment rear wall and the refrigerating compartment rear wall. The refrigerator compartment duct 23 is opened and closed.

Here, as shown in FIGS. 12 and 13, the refrigerating compartment cold air returning duct 35 and the vegetable compartment cold air returning duct 24 have a flat shape and overlap in the front-rear direction on the side portion of the cooling chamber 14 as described above. It is provided in such a form.

  Further, the refrigerating compartment cold air return duct 35 communicates with a side portion of the cooling compartment 14 via a guide passage 36 provided on the lower side of the refrigerating compartment.

  The guide passage 36 is provided with an inclined enlarged portion 37 which is enlarged toward the cooling chamber 14 side at an end portion on the cooling chamber side.

  Further, in the inclined enlarged portion 37 of the refrigerating room cold air return duct 35, the inclined extension line X (see FIG. 13) of the inclined enlarged portion 37 covers the fin outer edge 15a of the cooler 15 provided in the cooling chamber 14, that is, The fin outer edge 15a of the cooler 15 provided in the cooling chamber 14 is formed so as to have an angle so as to be included in the inclination extension line X of the inclination expanding portion 37.

  The bottom surfaces of the refrigerating compartment cool air return duct 35 and the guide path 36 form an inclined surface that is vertically downward toward the cooling chamber 14 and are continuous with the inclined surface of the defrost water drain pan 17b.

  With regard to the refrigerator in the present embodiment configured as described above, the function and effect thereof will be described next focusing on the flow of cold air.

  When any of the refrigerating compartment 8, the freezing compartment 11 and the vegetable compartment 12 becomes higher than the set temperature due to taking in and out of food or the like, the compressor 18 and the cooling fan 16 are driven, and the cool air generated by the cooler 15 is cooled by the cooling fan 16. As a result, it is supplied to the corresponding storage room via the refrigerating room duct 23, the freezing room damper 22, and the vegetable room cold air going duct 24.

  If the storage room having a temperature equal to or higher than the set temperature is, for example, the refrigerating room 8, the refrigerating room damper 34 is opened, and the cool air from the cooling room 14 is supplied to the refrigerating room 8 through the refrigerating room duct 23, and the refrigerating room 8 is cooled. After being cooled, the cooling air is sucked into the cooling chamber 14 through the cold air returning duct 35, cooled again by the cooler 15 and supplied to the cooling chamber 8, and the circulation is repeated to perform cooling.

  Here, the return cool air sucked from the refrigerating compartment cold air return duct 35 into the cooling compartment 14 is transferred to the cooling compartment 14 through the guide passage 36 provided on the lower side of the refrigerating compartment cool air return duct 35 as shown in FIG. However, since the end portion of the guide path 36 on the cooling chamber side is provided with the inclined expansion portion 37 that expands toward the cooling chamber 14 side, it is guided by the inclined expansion portion 37 and uniformly in the cooling chamber 14. Will come back.

  That is, the return cool air flowing through the guide path 36 also flows to the front side portion of the cooling chamber 14 along the inclined surface of the inclined expansion portion 37 as shown by the arrow in FIG. Will come back.

  As a result, the cool air that has returned to the inside of the cooling chamber 14 is evenly distributed to the cooler 15, and the entire cooler can be effectively used for efficient cooling.

  Moreover, the cold air expands smoothly and returns to the cooling chamber, so that the ventilation resistance is reduced.

In addition, the bottoms of the refrigerating compartment cool air return duct 35 and the guide path 36 form an inclined surface vertically downward toward the cooling compartment 14 and are continuous with the inclined surface of the defrost water drain pan 17b. Even if the return cold air flows down the room cool air return duct 35 and changes its direction at a substantially right angle into the cooling chamber 14, its flow becomes gentle, and the ventilation resistance is small from this point as well (see FIG. 4). ). Then, in addition to the horizontal expansion effect of the inclined expansion portion 37, the expansion effect in the vertical direction can be obtained with respect to the flow of the return cool air to the cooler 15, and the cool air returned into the cooling chamber 14 is cooled by the cooler. It is possible to disperse it evenly over 15 and to effectively utilize the entire cooler for efficient cooling.

  In addition, in this embodiment, since the refrigerating compartment cold air returning duct 35 is overlapped and arranged on the side of the cooling chamber 14 and on the back side of the vegetable compartment cold air advancing duct 24, the vegetable compartment cold air advancing duct 24 and the refrigerating compartment. By making the room cool air return duct 35 flat, the front-rear width of the refrigerator body 1 can be reduced while ensuring the flow rate.

  Further, as described above, by making the refrigerating room cold air return duct 35 flat to secure the flow rate and reducing the thickness of the entire duct in the longitudinal direction of the refrigerator main body, the longitudinal direction between the refrigerating room cold air return duct 35 and the cooling chamber 14 is reduced. Since a step is generated in the cold air and the returned cool air is likely to be biased, the cold air can be returned smoothly and uniformly by connecting the step with the inclined expansion portion 37.

  That is, according to the configuration of this embodiment, the size of the duct arranged laterally of the cooling chamber in the longitudinal direction of the refrigerator main body can be reduced to have the same depth as the cooling chamber, so that the storage efficiency of the freezing chamber can be increased. The cooling efficiency can be increased.

  In addition, since the inclined enlarged portion 37 of the refrigerating room cold air return duct 35 is formed such that the inclined extension line X of the inclined enlarged portion 37 covers the fin outer edge 15a of the cooler 15 provided in the cooling chamber 14, The return cool air flowing into the cooling chamber 14 along the inclination of the inclined expansion portion 37 surely comes into contact with the fins of the cooler 15. Therefore, the cooling efficiency can be further improved.

  Although the refrigerator according to the present invention has been described above using the above-described embodiment, the present invention is not limited to this. That is, it should be considered that the embodiments disclosed this time are exemplifications in all points and not restrictive. In other words, the scope of the present invention is shown not by the above description but by the scope of the claims, and is intended to include meanings equivalent to the scope of the claims and all modifications within the scope.

  For example, in the present embodiment, the refrigerating compartment cold air return duct 35 is exemplified as the cold air returning duct for returning the cool air, but this may include the return cold air from the vegetable compartment 12 or the vegetable compartment 12 or the frozen compartment. It may be applied to a duct portion for returning the cool air returned from the chamber 11.

  Further, the refrigerator main body 1 has been described by exemplifying the refrigerator compartment 8, the freezer compartment 11, the vegetable compartment 12, and the switching compartment 9 and the ice making compartment 10. However, the switching compartment 9 and the ice making compartment 10 may be omitted. It's good.

  INDUSTRIAL APPLICABILITY The present invention can increase the cooling efficiency of the cooler and at the same time reduce the ventilation resistance, so that the refrigerator can have a high cooling efficiency. Therefore, the present invention can be widely applied to refrigerators of various types and sizes, such as household and commercial types, that are cold-cooled.

1 Refrigerator Main Body 4 Foam Insulation Material 5, 6, 7 Door 8 Refrigerator Room 9 Switching Room 10 Ice Making Room 11 Freezing Room 12 Vegetable Room 14 Cooling Room 15 Cooler 15a Fin Outer Edge 16 Cooling Fan 17 Defrosting Means 18 Compressor 19 Freezing Room Partition plate 20 Partition 23 Refrigerator compartment duct 24 Vegetable room cold air passage duct 25 Refrigerator compartment partition plate 26 Branch unit 27 Refrigerator compartment duct section 28 Vegetable room cool air return duct section 29 Refrigerator compartment cold air return duct section 30 Vegetable compartment damper 31 Lid 34 Refrigerator Room damper 35 Cold room cold air return duct (cold air return duct)
36 Taxiway 37 Inclined part

Claims (2)

A refrigerator main body in which a refrigerating room, a freezing room, and a vegetable room are arranged from the upper part, a cooling room for generating cold air to be supplied to the refrigerating room, the freezing room, and the vegetable room, and cold air from the cooling room is the refrigerating room and the freezing room. , A cooling fan for supplying to the vegetable compartment, a cold air return duct for returning the cold air that has cooled the refrigerating compartment to the cooling chamber, and a vegetable compartment cold air going duct for supplying the cold air from the cooling chamber to the vegetable compartment , a refrigerator is provided on the side of the cold air return duct and the vegetable compartment cool air forward duct said cooling chamber is polymerized arranged in the longitudinal direction, before Kihiya air return duct of the cooling chamber through the guide path Along with communicating with the side portion, an inclination enlargement portion that inclines a portion of the vegetable compartment cold air going duct and expands toward the cooling chamber side is provided at the cooling chamber side end portion of the guide path , and the inclination enlargement portion is A refrigerator in which an outer edge of a fin of a cooler provided in the cooling chamber is formed within a slant extension line of a slant widened portion . Cool air return refrigerator bottom taxiway and the bottom surface of the duct according to claim 1, wherein the formation of the inclined surface which becomes lower direction toward the cooling chamber.