JP2010048430A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent reduction of a food storage amount in a storage compartment by eliminating a protrusion of a storage compartment rear face cover to the inside of the storage compartment and making its surface flat while maintaining cooling capacity for cooling the inside of the storage compartment. <P>SOLUTION: This refrigerator includes a cooler 23 disposed at the rear side of a refrigerating compartment 2, a cold air circulating fan 26 disposed above the cooler 23, a cold air guiding space 27a formed at least above the cold air circulating fan 26, the refrigerating compartment rear face cover 37 provided in the rear of the refrigerating compartment 2 to cover the cooler 23, the cold air circulating fan 26, and the cold air guiding space 27a from the front, and blowout ports 45 formed at an upper part and at both right and left sides of the refrigerating compartment rear face cover 37. The refrigerator has a structure in which cold air generated by the cooler 23 is blown into the refrigerating compartment 2 from the blowout ports 45 through the cold air guiding space 27a by blowing action of the cold air circulating fan 26, and the surface of the refrigerating compartment rear face cover 37 is made into a substantially flat shape. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a fan-cooled refrigerator in which cold air in a storage chamber is circulated by a fan for circulating cold air.

The fan-cool type refrigerator forms a cooling chamber at the back of the storage chamber, cool air in the storage chamber is sucked into the cooling chamber through a return passage by a cool air circulation fan, and is cooled by a cooler in the cooling chamber. It is the structure which circulates so that cold air may be blown out again from the ventilation path to the storage room. For example, the refrigerator shown in Patent Document 1 includes a cool air circulation fan at the upper part of the back of the storage room in order to improve the blowout of cool air and increase the cooling capacity.
JP 2006-200774 A

  In the configuration in which the cool air circulation fan is provided at the upper part of the back of the storage chamber, a bulge to the storage chamber side is formed in a portion of the rear cover of the storage chamber that covers the cool air circulation fan from the front, and the storage chamber side is formed. There was a problem that the amount of food stored in the room decreased.

  The present invention has been made in view of the above circumstances, and its purpose is to eliminate the protrusion of the storage room rear cover to the storage room side while maintaining the cooling capacity for cooling the storage room, and to make the surface flat. Another object of the present invention is to provide a refrigerator capable of preventing a decrease in the amount of food stored in a storage room.

  In order to achieve the above object, a refrigerator according to the present invention includes a storage chamber that is formed inside a heat insulating box and whose front opening is opened and closed by a door, a cooler disposed at the back of the storage chamber, A cool air circulation fan disposed on the back of the storage chamber and above the cooler; a cool air guide space formed on the back of the storage chamber and at least above the cool air circulation fan; and A storage chamber rear cover provided at the rear of the storage chamber so as to cover the cooler, the cooling air circulation fan, and the cold air guiding space from the front, and cold air formed on the upper and left and right sides of the storage chamber rear cover. The cool air generated by the cooler is blown out from each of the cool air outlets into the storage chamber through the cool air guide space by the air blowing action of the cool air circulation fan. Characterized in that a surface of the rear cover has substantially planar shape.

  According to the present invention, in the refrigerator, a cooler disposed behind the storage chamber, a cool air circulation fan disposed behind the storage chamber and above the cooler, and the storage chamber By providing at least a cool air guide space formed above the cool air circulation fan, the surface of the rear cover of the storage chamber can be made substantially planar, and a reduction in the amount of food stored in the storage chamber can be prevented. .

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a front view of the refrigerator body 1. As shown in FIG. 3, the refrigerator according to the present embodiment includes a refrigerator body 1, a refrigerator compartment 2 located in the upper part, a freezer compartment 3 located in the lower part, and a space between the refrigerator compartment 2 and the refrigerator compartment 3. The ice making chamber 4 and the small freezer chamber 5 are located on the left and right sides of the main body.

  FIG. 1 is a vertical side view of the refrigerator body 1. As shown in FIG. 1, the refrigerator body 1 is configured by filling a heat insulating material 8 between a steel plate outer box 6 and plastic upper and lower inner boxes 7. It is set as each said storage chamber 2-5. And as FIG. 3 shows, the refrigerator main body 1 is provided with the doors 9-12 which open and close the front opening part of each storage chambers 2-5. Among these doors 9-12, the door 9 of the refrigerator compartment 2 is a double door type, and the doors 10-12 of the other storage rooms 3-5 are a drawer type.

  FIG. 4 is a rear view of the refrigerator body 1. As shown in FIG. 4, a machine room cover 14 is attached to the lower back of the refrigerator main body 1. Inside the machine room cover 14, a machine room 14a (see FIG. 1) in which a compressor (not shown) and the like are installed is formed. In order to release heat from the machine room 14 a, the machine room cover 14 has a large number of air holes 15. A steel plate back plate 16 is attached to the upper part of the machine room cover 14 on the rear surface of the refrigerator main body 1, and a convex part 34 described later is integrally formed on the upper part. A dew proof pipe 17 is attached to the inner surface of the refrigerator main body 1 of the back plate 16 (see FIG. 4). A part of the dew proof pipe 17 is disposed so as to surround the outer peripheral portion of the convex portion 34.

  As shown in FIG. 1, the refrigerator compartment 2 stores eggs as a food storage container and a water storage tank (not shown) for storing water for making ice in the ice making chamber 4 at the bottom. An egg case (not shown) and a chilled chamber container 18 are arranged side by side so that they can be pulled out and removed. On the water storage tank, the egg case, and the chilled chamber container 18, a vegetable chamber container 19 as a food storage container is also detachably disposed. Further, above the vegetable compartment container 19, a shelf 20 on which food is placed is detachably arranged in a plurality of upper and lower stages. On the left inner wall surface of the refrigerator compartment 2, a control panel 2a for setting the temperatures of the storage compartments 2 to 5 is arranged.

  The freezing room 3, the ice making room 4 and the small freezing room 5 are cooled by a cooler 21 for freezing and a fan 22 for cold air circulation for freezing in a fan cool system. On the other hand, the refrigerator compartment 2 is similarly cooled by a fan cool system by a refrigerator 23 for cold storage and a fan 26 for circulating cold air.

  FIG. 2 is an enlarged vertical side view of the rear of the refrigerator compartment 2. As shown in FIG. 2, a cooling chamber 24 is formed on the back of the refrigerator compartment 2 so as to be positioned above the vegetable compartment container 19. In the cooling chamber 24, a cool air guide space 25 for intake air, a cooler 23, a cool air circulation fan 26, and a cool air guide space 27a for exhaust gas are arranged linearly in this order from bottom to top. . The cooler 23 is unitized with the drainage basin 28 by integrally forming a drainage basin 28 and attaching a defrosting heater 29 to a plastic unit plate 30 mounted immediately below the cooler 23. This unit plate 24 is fixed to the inner rear surface of the inner box 7 constituting the refrigerator compartment 2.

  The fan 26 for circulating cold air is disposed on a plastic rear cover 32 that integrally forms the bell mouth 31, and then the cover 32 covers the entire cooler 23 and the unit plate 30 on the inner rear surface of the inner box 7. Installed. A recessed portion 33 that is recessed rearward is formed in the rear portion of the cool air circulation fan 26 of the inner box 7. The concave portion 33 serves as a passage for the cool air cooled through the cooler 23. The back plate 16 is provided with a protrusion 34 that protrudes rearward in correspondence with the rear of the cold-air circulation fan 26.

  As shown in FIG. 2, a space in which front, rear, left and right are closed is formed between the rear cover 32 and the inner rear surface of the inner box 7, and constitutes a part of the cooling chamber 24. This space is partitioned vertically by a drainage basin 28, and the space above the drainage basin 28 is a cooling chamber 24.

  FIG. 6 is an exploded perspective view of the unit and the front cover 35 in which the rear cover 32, the unit plate 30 and the lower cover 41 are integrated. As shown in FIG. 6, a lower cover 41 as a duct member is connected to the lower end portion of the rear cover 32, and these are fixed to the inner rear surface of the inner box 7.

  As shown in FIG. 2, a front cover 35 is put on the front side of the rear cover 32. The front cover 35 covers the cool air guide space 25 for intake air, the cooler 23, the cool air circulation fan 26 for the refrigerator compartment, and the cool air guide space 27a for exhaust gas, and is positioned on both the left and right sides of the cool air circulation fan 26. Thus, the cold air guiding spaces 27b and 27c (see FIG. 5) are formed between the inner box 7 and the rear surface. The front cover 35 is integrated with a heat insulating material 36 provided on the surface on the cooling chamber 24 side, and constitutes a refrigeration chamber rear surface cover 37 (corresponding to the storage chamber rear surface cover of the present invention). The refrigerator compartment rear cover 37 functions to partition the refrigerator compartment 2 and the cooling compartment 24. The front cover 35 (refrigerating compartment rear cover 37) has a flat surface. The surface of the front cover 35 may be provided with irregularities necessary for design, a step portion for supporting a shelf on which food is placed, a cold air outlet or a suction port, and the like.

  As shown in FIG. 6, the front cover 35 has two locking portions 38 having a frame shape at the upper end, locking protrusions 39 at the lower side portions thereof, and the entire width direction at the lower end thereof. It has the extended part 40 extended below.

  When attaching the front cover 35 to the front portion of the rear cover 32, the front cover 35 is lifted from the bottom up until the locking portion 38 engages with a locking claw 42 formed integrally with the rear cover 32. (See FIG. 7). FIG. 7 is a partially enlarged cross-sectional view showing a state where the locking portion 38 of the front cover 35 and the locking claw 42 of the rear cover 32 are engaged. After the front cover 35 is lifted until the plastic locking claw 42 bends, the extended portion 40 of the front cover 35 is fitted in the groove 43 formed on the upper end surface of the lower cover 41. To do. At the same time, the locking projections 39 of the front cover 35 are engaged with the locking portions 44 that are integrally molded on both sides of the lower end of the unit plate 30. Thus, the front cover 35 is fixed to the rear surface of the refrigerator compartment 2 as the refrigerator compartment rear cover 37. Thereby, the front cover 35 forms a slight gap between the upper end portion of the front cover 35 and the inner surface of the inner box 7 (see FIGS. 1, 2, and 8).

A large number of air outlets 45 for blowing the cool air blown by the cool air circulation fan 26 into the refrigerator compartment 2 are formed at the upper end portion, the left and right side portions, and the front surface portion of the front cover 35.
Thus, according to the present embodiment, by providing the cold air guiding spaces 27a, 27b, 27c on the upper and left and right sides of the cold air circulation fan 26, the space through which the cold air flows in the cooling chamber 24 can be increased. The pressure loss of the cold air in the cooling chamber 24 can be reduced.

  For this reason, the cold air is blown out vigorously from the cooling chamber 24 through the outlet 45 to the refrigerating chamber 2 while maintaining a high pressure, and the cold air in the refrigerating chamber 2 is discharged from the suction port 46 by the negative pressure due to the blow-out of the cold air. Can be sucked in vigorously.

  That is, the circulation efficiency of the cold air between the refrigerator compartment 2 and the cooling chamber 24 can be increased, and the cooling efficiency of the refrigerator compartment 2 can be increased. Therefore, the cold air can be blown into the refrigerator 2 without protruding the cold air circulation fan 26 into the refrigerator 2, and the surface of the refrigerator compartment rear cover 37 constituting the rear surface of the refrigerator compartment 2 is substantially planar. It is possible to prevent the food storage amount in the refrigerator compartment 2 from being reduced. Furthermore, since the cooling efficiency of the refrigerator compartment 2 can be improved, the cooler 23 can be made small while maintaining the cooling capacity of the refrigerator compartment 2.

  Note that the arrow drawn in FIG. 5 shows how the cold air discharged from the cold air circulation fan 26 flows in the cooling chamber 24, and the arrow drawn in FIG. A state in which the air is sucked from the blowout and the suction port 46 is shown.

  Moreover, it was set as the structure which is located in the back of the refrigerator compartment 2 and is located in the back part of the fan 26 for cold air circulation, and the inner box 7 is recessed in back. As a result, the recess 33 serves as a cool air passage to the suction port of the cool air circulation fan 26, and it is not necessary to provide a separate cool air passage to the suction port of the cool air circulation fan 26. The surface of the refrigeration chamber rear surface cover 37 constituting the rear surface of the refrigeration chamber 2 in the refrigeration chamber 24 can be formed into a substantially planar shape without protruding inside, and a reduction in food storage amount in the refrigeration chamber 2 can be prevented. .

  Further, the back plate 16 constituting the back surface of the refrigerator main body 1 that is the heat insulating box is provided with a convex portion 34 that protrudes backward corresponding to the rear of the fan 26 for circulating cold air. Thereby, the thickness of the heat insulating material 8 located behind the cold air circulation fan 26 is ensured to a predetermined thickness, and the surface of the refrigeration chamber rear cover 37 constituting the rear surface of the refrigeration chamber 2 is reduced without lowering the heat insulation effect. A substantially flat shape can be obtained, and a reduction in the amount of food stored in the refrigerator compartment 2 can be prevented.

  Moreover, when the refrigerator main body 1 is installed in contact with the wall 47 as shown in FIG. 1 by providing the projections 34 on the back plate 16, the back plate 16 is in contact with the wall 47. Only the convex portion 34 is provided. Since a gap is formed between the portion other than the convex portion 34 of the back plate 16 and the wall 47, it is possible to easily release heat generated by the dew prevention pipe 17 attached to the back plate 16 for the purpose of preventing condensation. it can.

Further, by providing the dew-proof pipe 17 on the outer peripheral portion of the convex portion 34 of the back plate 16, dew condensation around the convex portion 34 in contact with the wall 47 can be prevented.
Further, when the front cover 35 is attached to the front portion of the rear cover 32, the locking portions 38 having two frame shapes at the upper ends thereof engage with the locking claws 42 formed integrally with the rear cover 32. Try to lift from bottom to top. Next, the lower cover 41 is lowered at a position where the extended portion 40 of the front cover 35 is fitted into the groove portion 43 formed on the upper end surface of the lower cover 41. Thus, since the front cover 35 is configured to be attached to the rear surface of the refrigerator compartment 2 as the refrigerator compartment rear cover 37, the refrigerator compartment rear cover 37 is externally formed without creating an extra gap at the upper end of the refrigerator compartment rear cover 37. It can be fixed to the rear surface of the refrigerator compartment 2 with good appearance.

(Other embodiments)
In the embodiment of the present invention described above, an example in which the refrigerator main body 1 is partitioned into the refrigerator compartment 2 and the freezer compartment 3 and the cooler 21 and the cooler 23 are arranged in the refrigerator compartment 2 and the refrigerator compartment 3 respectively has been described. . However, the present invention may be applied to a refrigerator that supplies cold air to the refrigerator compartment 2 and the freezer compartment 3 with a single cooler. Moreover, the position and arrangement | positioning of the refrigerator compartment 2, the freezer compartment 3, the ice making room 4, and the small freezer compartment 5 which comprise the storage room of the refrigerator main body 1, the number of storage rooms, etc. can be changed arbitrarily.
Moreover, the application of the present invention is not limited to a general household refrigerator, but can also be applied to a commercial refrigerator or freezer.

The vertical side view of the refrigerator which concerns on one Embodiment of this invention Expanded vertical side view of the rear of the refrigerator compartment Front view of the refrigerator body Rear view of the refrigerator body Front view of the refrigerator compartment with the front cover removed Disassembled perspective view of unit and front cover with integrated rear cover, unit plate and lower cover Partially enlarged vertical side view showing a state in which the locking portion of the front cover and the locking claw of the rear cover are locked Front view showing the state of intake and exhaust of cold air in the refrigerator

Explanation of symbols

  In the drawings, 1 is a refrigerator main body (insulation box), 2 is a refrigerator compartment (storage chamber), 16 is a back plate (back of the storage chamber), 17 is a dew-proof pipe, 23 is a cooler, 24 is a cooling chamber, 26 Is a cold air circulation fan, 27a, 27b, and 27c are cold air guide spaces, 33 is a recess, 34 is a convex portion, 35 is a front cover, 37 is a refrigeration chamber rear cover (rear storage chamber rear cover), and 45 is an air outlet (cold air). Indicates the outlet.

Claims (5)

A storage chamber formed inside the heat insulation box, the front opening being opened and closed by a door,
A cooler disposed on the back of the storage room;
A cooling air circulation fan disposed at the back of the storage chamber and above the cooler;
A cold air guiding space formed on the back of the storage chamber and at least above the cold air circulation fan; and
A rear cover of the storage chamber provided at the rear of the storage chamber so as to cover the cooler, the cooling air circulation fan, and the cooling air guide space from the front;
A cold air outlet formed on the upper and left and right sides of the rear cover of the storage room,
The cool air generated by the cooler is blown out from each of the cool air outlets into the storage chamber through the cool air guide space by the air blowing action of the cool air circulation fan,
A refrigerator characterized in that the rear cover of the storage room has a substantially flat surface.   The refrigerator according to claim 1, further comprising a recessed portion that is located in a rear surface of the storage chamber and is located at a rear portion of the cool air circulation fan and is recessed rearward.   3. The refrigerator according to claim 2, wherein a back plate that forms a back surface of the heat insulation box is provided with a convex portion that protrudes rearward in correspondence with the rear of the cool air circulation fan.   The refrigerator according to any one of claims 1 to 3, wherein the storage room rear cover is configured to be attached by being moved from bottom to top.   The refrigerator according to claim 3, wherein a dew proof pipe is disposed on an outer peripheral portion of the convex portion.

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