JP2006010204A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a refrigerator for restraining nonuniformity of the temperature of a refrigerating room, without causing condensation on a cooling duct wall surface, by efficiently cooling by an inexpensive cooler. <P>SOLUTION: The refrigerating room 6 has the plate-like cooler 25, a cooling fan 26, an inner box 2 of a thermal insulation box body for constituting the refrigerating room, and a cooling duct 22 partitioned by a decorative sheet 21. The cooler 25 is arranged in the cooling duct 22, and the decorative sheet 21 is provided with a communicating port 27 communicating with the inside of the refrigerating room. A cold air delivery duct 22a and a cold air suction duct 22b are formed in the cooling duct 22, and a bypass 39 is constituted for communicating with the cold air delivery duct 22a in a lower part of a deodorizing duct 22c having adjacent deodorizing fan 41 and deodorizing device 40. Since efficient cooling is performed by a cooler 25, the cooler 25 can be inexpensively constituted. The storage inside of the cooling duct 22 forms a suction duct, and a wall surface of the decorative sheet 21 does not cause condensation. The nonuniformity of the temperature in the refrigerating room can be restrained. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a refrigerator capable of optimally cooling a refrigerator compartment.

  In general, refrigerators refrigerate the cold room cooled by a cooler in the refrigerator to cool the inside of the refrigerator and cool directly in the refrigerator with a cooling wall cooled by the cooler. In the case of the intercooling type, a suction duct and a discharge duct that circulate the air in the warehouse are required separately from the place where the cooler is installed, so the effective internal volume in the refrigerator compartment decreases, while direct cooling In the formula, it was not possible to cope with the rapid rise in the internal temperature when food was added.

  The conventional direct cooling refrigerator has arranged a cooling fan, and compensated for the direct cooling type defect by operating the cooling fan in a timely manner (see, for example, Patent Document 1).

  FIG. 5 shows a conventional refrigerator described in Patent Document 1. As shown in FIG. As shown in FIG. 5, in the refrigerator 1 comprised by the heat insulation box 5 with which the heat insulating material 4 was filled between the inner box 2 and the outer box 3, a refrigerator is the refrigerator compartment 6, the vegetable compartment 7, and the 1st from the top. 1 freezer compartment 8 and second freezer compartment 9.

  In the refrigerator compartment 6 and the vegetable compartment 7, cooling pipes 10 (evaporators) are arranged in contact with the upper, lower, left, and right wall surfaces constituting the inner box, and the inside of the refrigerator includes a plurality of cooling wall surfaces cooled by the cooling pipes 10. It is the composition which has.

  A cooling duct 11 is disposed on the inner box wall of the rear wall that is the inside of the refrigerator compartment, and a cooling fan 12 for the refrigerator compartment is disposed above the cooling duct 11. The cooling duct 11 has an air outlet 13 on the upper side and an outlet 14 on the lower side. The cooling duct 11 can be taken into the cooling duct 11 through a plurality of slit-shaped openings 15 from the front surface.

  According to the refrigerator configured as described above, when the temperature in the refrigerator compartment is stable within the set range, the cooling fan 12 for refrigeration is stopped and the cooling pipe is operated by operating the compressor 16. When the refrigerant flows through the inner wall 10, the wall surface of the inner box is directly cooled, and the upper, lower, left and right, and rear walls become cooling wall surfaces for cooling.

Next, when food is added and the internal temperature rises, the cooling fan 12 for refrigeration is operated, and cool air is circulated through the cooling duct 11 to cool the internal temperature, thereby lowering the internal temperature. After the cooling fan 12 is operated, when the inside of the refrigerator reaches a set temperature, the cooling fan 12 for refrigeration is stopped and the cooling is returned to the cooling wall only.
JP 2000-28257 A

  However, in the configuration as described above, it is necessary to dispose a large number of cooling pipes in the inner box, resulting in a great cost. In addition, the inner wall surface temperature of the cooling duct is lowered and condensation occurs. In addition, there is a problem that unevenness occurs in the internal temperature distribution.

  The present invention solves the above-described problems, and a cooler can be configured with a small number of cooling pipes to be inexpensive. Moreover, the cooling duct wall surface does not condense. It is another object of the present invention to provide an energy-saving and quiet refrigerator having a uniform temperature distribution in the refrigerator.

  In order to solve the above-described conventional problems, the refrigerator of the present invention includes a flat plate cooler, a cooling fan, a deodorizing device, a deodorizing fan, and an inner box of a heat insulating box that constitutes the refrigerating chamber. A cooling duct and a deodorizing duct partitioned by a decorative plate, wherein the cooler is installed in the cooling duct, the decorative plate is provided with a communication port communicating with a refrigeration chamber, and the cooling duct is connected to the cooler A cold air discharge duct is formed between the inner boxes, a cold air suction duct is formed between the cooler and the decorative board, and the deodorizing device is installed in the deodorizing duct configured between the inner box and the decorative board, A bypass for communicating the cooling duct and the deodorizing duct is formed.

  As a result, the cool air that cools the inside of the refrigerator is efficiently cooled by the cooler installed in the cooling duct, so that the cooler can be configured with a small number of cooling pipes and can be made inexpensive. In addition, the cooling duct can be minimized and the effective internal volume can be increased. In addition, the inside of the cooling duct forms a suction duct, and the decorative panel wall surface does not condense. Moreover, the cold air discharge duct and the deodorizing duct are communicated with each other, and the upper portion of the refrigerator compartment can be cooled to suppress temperature unevenness in the refrigerator compartment.

  In the refrigerator of the present invention, the cooling fan and the deodorizing fan are synchronously rotated at the same time.

  As a result, there is no condensation on the surface of the decorative plate, and the temperature rise in the upper part of the refrigerator compartment by the cooling fan provided on the upper portion of the decorative plate is cooled. Unevenness can be suppressed.

  In the refrigerator of the present invention, the deodorizing fan rotates only when the temperature in the upper part of the refrigerator compartment rises.

  As a result, there is no condensation on the surface of the decorative plate, and the temperature rise in the upper part of the refrigerator compartment by the cooling fan provided on the upper portion of the decorative plate is cooled. Unevenness can be suppressed, and when the upper temperature of the refrigerator compartment is stable, the deodorizing fan is stopped, so that energy saving and noise reduction can be realized.

  In the refrigerator of the present invention, the cooling fan and the deodorizing fan rotate alternately.

  As a result, there is no condensation on the surface of the decorative plate, and the temperature rise in the upper part of the refrigerator compartment by the cooling fan provided on the upper portion of the decorative plate is cooled. Unevenness can be suppressed, and the temperature is always controlled by a single fan, so energy saving and noise can be achieved.

  In addition, the refrigerator of the present invention performs the rotation operation only with the deodorizing fan by stopping the cooling fan when the temperature in the refrigerator compartment is stabilized.

  As a result, there is no condensation on the surface of the decorative plate, and the temperature rise in the upper part of the refrigerator compartment by the cooling fan provided on the upper portion of the decorative plate is cooled. Unevenness can be suppressed, and when the temperature in the refrigerator compartment is stable, the cooling fan is stopped, so that energy saving and noise can be realized.

  The refrigerator of this invention can make the cooler of a refrigerator compartment cheap. Furthermore, the effective internal volume can be increased. Furthermore, the decorative wall surface does not condense.

  Moreover, the refrigerator of this invention can suppress the temperature nonuniformity of a refrigerator compartment.

  In addition, the refrigerator of the present invention can realize energy saving and noise reduction because only a minimum number of fans operate when the temperature in the refrigerator compartment is stable.

  The invention described in claim 1 is a cooling system in which a flat cooler, a cooling fan, a deodorizing device, a deodorizing fan, an inner box of a heat insulating box constituting the refrigerator compartment, and a decorative board are partitioned in the refrigerator compartment. A duct and a deodorizing duct, the cooler is installed in the cooling duct, the decorative plate is provided with a communication port communicating with the refrigerator compartment, and the cooling duct discharges cool air between the cooler and the inner box A cool air suction duct is formed between the cooler and the decorative plate, and the deodorizing device is installed in the deodorizing duct configured between the inner box and the decorative plate, and the cooling duct and the deodorizing duct By forming the bypass that communicates with each other, the cool air that cools the inside of the refrigerator is efficiently cooled by the cooler installed in the cooling duct, so that the cooler can be configured with a small number of cooling pipes and can be made inexpensive. In addition, the cooling duct can be minimized and the effective internal volume can be increased. In addition, the inside of the cooling duct forms a suction duct, and the decorative board surface does not condense. Moreover, the cold air discharge duct and the deodorizing duct are communicated with each other, and the upper part of the refrigerator compartment can be cooled to suppress temperature unevenness in the refrigerator compartment.

  According to the second aspect of the present invention, the cooling fan and the deodorizing fan of the refrigerator according to the first aspect of the invention perform the rotating operation simultaneously in synchronism, so that the surface of the decorative board is provided with no condensation on the decorative board surface. Since the temperature rise in the upper part of the refrigerator compartment due to the cooling fan is cooled by the deodorizing fan provided on the upper part of the decorative plate, the temperature unevenness in the refrigerator compartment can be suppressed.

  According to the third aspect of the present invention, the deodorizing fan rotates only when the temperature of the upper part of the refrigerator of the refrigerator according to the first aspect of the invention rises. The temperature rise in the upper part of the refrigerating room due to the cooling fan installed in the interior is also cooled by the deodorizing fan provided in the upper part of the decorative plate. Since the deodorizing fan is stopped during the operation, energy saving and noise reduction can be realized.

  According to a fourth aspect of the present invention, the cooling fan and the deodorizing fan of the refrigerator according to the first aspect of the present invention alternately rotate so that the surface of the decorative board is not condensed and the cooling fan is provided above the decorative board. The temperature rise of the refrigerator compartment is also cooled by the deodorizing fan installed on the top of the decorative plate, so the temperature in the refrigerator compartment can be suppressed, and the temperature is always controlled by one fan, saving energy.・ Silent noise can be achieved.

  According to the fifth aspect of the present invention, when the temperature in the refrigerator compartment of the refrigerator according to the first aspect of the invention is stabilized, the cooling fan is stopped and the rotation operation is performed only with the deodorizing fan, so that the surface of the decorative board is condensed. In addition, the temperature rise in the upper part of the refrigerator compartment due to the cooling fan provided on the top of the decorative board is cooled by the deodorizing fan provided on the upper part of the decorative board. Since the cooling fan is stopped when the temperature is stable, energy saving and noise reduction can be realized.

  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 shows a longitudinal sectional view of the refrigerator in Embodiment 1 of the present invention. FIG. 2 shows a refrigeration cycle diagram of the refrigerator in the first embodiment of the present invention. FIG. 3 shows a perspective view of the duct structure on the back side of the refrigerator compartment decorative plate of the refrigerator according to Embodiment 1 of the present invention.

  In FIG. 1, the refrigerator 17 is constituted by a heat insulating box 5 in which a heat insulating material 4 is filled between an inner box 2 and an outer box 3. The refrigerator 17 has a cold room 6 from the top, a low temperature room 18 having a set temperature lower than that of the cold room, a first freezer room 8 and a second freezer room 9 at the lower part of the cold room 6. The second freezer compartment 9 is partitioned by a freezer partition plate 19, and the refrigerator compartment 6 and the first freezer compartment 8 are partitioned by a heat insulating partition wall 20 having the same configuration as the heat insulating box 9.

  The refrigerator compartment 6 is provided with a cooling duct 22 partitioned by a rear wall surface of the inner box 2 and a decorative plate 21, and a cooling plate 25 constituted by a cooling pipe 23 and a flat plate 24 is provided in the cooling duct 22. The cool air discharge duct 22 a is arranged between the cooling plate 25 and the decorative plate 21 so that the cool air suction duct 22 b is formed between the inner box 2 and the inner box 2. The distance A between the cooling plate 25 and the inner box 2 is also arranged at a position where it is larger than the distance B between the cooling plate 25 and the decorative plate 21.

  In addition, a cooling fan 26 and a suction port 28 are arranged in the upper part, and a discharge port 29 is opened in a low temperature chamber 18 whose set temperature is lower than that in the refrigeration room below the refrigeration room 6. Further, the decorative plate 21 is also provided with a communication port 27 having a plurality of opening areas communicating with the inside of the cold air suction duct 22b and the inside of the refrigerating chamber 6 that are larger as the distance from the cooling fan 26 is closer (the upper portion of the decorative plate). . A cooling fan 30 and an evaporator 31 are arranged in the second freezer compartment 9.

  FIG. 2 shows a refrigeration cycle. The refrigerant discharged from the compressor 16 passes through the condenser 32 and the three-way valve 33 as shown by the solid line, and then is decompressed by the capillary tube 34 and enters the evaporator 31. A first refrigeration cycle returning to the compressor 16 is configured again via the refrigerant tank 35. Further, the refrigerant discharged from the compressor 16 passes through the condenser 32 as indicated by the dotted line, the refrigerant flow path is switched by the three-way valve 33, the pressure is reduced by the capillary tube 36 as indicated by the dotted line, and the refrigerant is supplied to the cooling plate 25. A second refrigeration cycle that enters and returns to the compressor 16 via the refrigerant tank 37 is configured.

  In FIG. 3, the cooling duct 22 is constituted by a decorative plate 21 and a partition wall 38. A bypass 39 is provided at the lower part of the partition wall 38a so as to allow the cold air discharge duct 22a and the deodorizing duct 22c to communicate with each other.

  A deodorizing fan 41 and a discharge port 42 are disposed above the deodorizing duct 22c, and a deodorizing device 40 is disposed in the middle of the deodorizing duct 22c.

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

  Due to the operation of the compressor 16, the refrigerant flows through the cooling plate 25 or the evaporator 31, thereby cooling the inside of the warehouse. That is, on the freezer compartment 8 and 9 side, the cold air cooled by the evaporator 31 is circulated in the warehouse by the freezing cooling fan 30 and the freezer compartments 8 and 9 are cooled.

  On the other hand, on the refrigerator compartment 6 side, the cold air cooled by the cooling plate 25 in the cold air discharge duct 22a is discharged from the discharge port 29 in the back surface portion of the low temperature chamber 18, first cooling the low temperature chamber 18, and then The entire refrigerator compartment 6 is cooled and sucked from the communication port 27 and the suction port 28 of the decorative plate 21. At that time, the cold air sucked from the suction port 28 is cooled by the cooling plate 25 in the cold air suction duct 22b, and the cold air is efficiently cooled on both surfaces of the cooling plate 25.

  As described above, in the present embodiment, since the cold air can be efficiently cooled on both surfaces of the cooling plate 25, the cooling plate 25 can be configured with a small number of cooling pipes at low cost. Further, the cooling duct 22 can be minimized, and the effective internal volume of the refrigerator compartment can be increased. Furthermore, there is a cold air suction duct 22b between the decorative plate 21 and the cooling plate 25, and the decorative plate 21 is prevented from being extremely cooled by the cooling plate 25, so that condensation of the decorative plate 21 can be prevented.

  In the present embodiment, since the cool air discharge duct 22a and the deodorizing duct 22c communicate with each other by the bypass 39 provided at the lower part of the partition wall 38a, warm air is sucked from the suction port 28 by the cooling fan 26 provided at the upper part. Even if the ambient temperature rises and temperature unevenness occurs in the upper and lower stages of the refrigerator compartment, the deodorizing fan 41 operates and the cool air cooled by the cooling plate 25 is discharged from the bypass 39 through the deodorizing duct 22c. Therefore, since the upper stage is cooled, temperature unevenness in the refrigerator compartment can be suppressed.

(Embodiment 2)
Embodiment 2 according to the present invention will be described with reference to the drawings. In addition, about the same structure as Embodiment 1, it attaches the same code | symbol and abbreviate | omits detailed description. FIG. 4 shows a perspective view of the duct structure on the back side of the refrigerator compartment decorative plate of the refrigerator according to Embodiment 2 of the present invention.

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

  In the refrigerator compartment 6, the cold air moves downward and the warm air moves upward, so that the temperature unevenness increases as the upper stage of the refrigerator compartment 6 is closer. Since it is controlled to rotate simultaneously in the opposite direction and synchronously, the cold air is agitated in the upper stage, and temperature unevenness in the refrigerator compartment can be suppressed.

  Further, if the deodorizing fan 41 is controlled to rotate only when the temperature of the upper stage of the refrigerating room 6 rises, the temperature unevenness of the refrigerating room can be suppressed, and the deodorizing fan 41 is stopped except when necessary to keep the refrigerating room. Because of the temperature control, energy saving and noise reduction can be realized.

  Further, if the cooling fan 26 and the deodorizing fan 41 provided on the upper part of the refrigerator compartment 6 are controlled to rotate alternately, the temperature unevenness of the refrigerator compartment can be suppressed and the temperature of the refrigerator compartment is always controlled by one fan. Therefore, energy saving and noise reduction can be realized.

  Further, when the temperature in the refrigerator compartment 6 is stabilized, the cooling fan 26 is stopped and controlled to rotate only with the deodorizing fan 41, whereby temperature unevenness in the refrigerator compartment can be suppressed and the refrigerator compartment is always kept with one fan. Because of the temperature control, energy saving and noise reduction can be realized.

  As described above, the refrigerator according to the present invention can cool a low temperature room having a lower set temperature than the refrigerating room and the refrigerating room installed at the lower part of the refrigerating room with an inexpensive cooler sufficiently to the set temperature without temperature unevenness. It can also be applied as a cooling method for refrigeration equipment in general.

The longitudinal cross-sectional view in Embodiment 1 of the refrigerator by this invention Refrigeration cycle diagram in Embodiment 1 of the refrigerator according to the present invention Duct configuration perspective view of the back of the refrigerator compartment decorative plate in Embodiment 1 of the refrigerator according to the present invention Duct configuration perspective view of the back of the refrigerator compartment decorative plate in Embodiment 2 of the refrigerator according to the present invention Vertical section of a conventional refrigerator

Explanation of symbols

2 Inner box 21 Decorative plate 22 Cooling duct 22a Cold air discharge duct 22b Cold air suction duct 22c Deodorizing duct 25 Cooling plate 26 Cooling fan 27 Communication port 39 Bypass 40 Deodorizing device 41 Deodorizing fan

Claims (5)

  In the refrigerator compartment, a flat plate cooler, a cooling fan, a deodorizing device, a deodorizing fan, an inner box of a heat insulating box constituting the refrigerator compartment, a cooling duct and a deodorizing duct partitioned by a decorative plate, The cooler is installed in the cooling duct, and the decorative plate is provided with a communication port that communicates with the refrigeration chamber. The cooling duct includes a cool air discharge duct between the cooler and the inner box, and the cooler and the decorative plate. A cold air suction duct is formed between the plates, and the deodorizing device is installed in the deodorizing duct configured between the inner box and the decorative plate, and forms a bypass that allows the cooling duct and the deodorizing duct to communicate with each other. A refrigerator characterized by that.   The refrigerator according to claim 1, wherein the cooling fan and the deodorizing fan rotate simultaneously in synchronization.   The refrigerator according to claim 1, wherein the deodorizing fan rotates only when the temperature of the upper part of the refrigerator compartment rises.   The refrigerator according to claim 1, wherein the cooling fan and the deodorizing fan rotate alternately.   The refrigerator according to claim 1, wherein when the temperature in the refrigerator compartment is stabilized, the cooling fan is stopped and the rotation operation is performed only with the deodorizing fan.

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