JPWO2018070063A1 - refrigerator - Google Patents

Abstract

In the refrigerator 1 provided with the cold air duct 12 arranged on the back surface of the refrigerator compartment 2 and the blower fan 14 arranged in the cold air duct 12, the present invention includes a first passage 31 in which the cold air duct 12 extends upward from the blower fan 14. A second passage 32 connected to the upper end of the first passage 31 via the connection port 35 and extending downward, a first discharge port 2b that opens to the second passage 32 and faces the refrigerator compartment 2, and a second discharge port. The first discharge port 2b is disposed at the upper end portion of the second passage 32, and the second discharge port 2c is disposed below the connection port 35.

Description

  The present invention relates to a refrigerator having a cold air duct for discharging cold air to a storage room.

  A conventional refrigerator is disclosed in Patent Document 1. This refrigerator has a cold air duct at the back of the storage room. A blower fan is disposed in the cool air duct, and the cool air duct extends upward from the blower fan. The cold air duct is provided with a plurality of discharge ports facing the storage chamber. By the operation of the blower fan, cold air flows through the cold air duct and is discharged from the discharge port into the storage chamber, thereby cooling the storage chamber.

JP 2012-26677 A

  However, according to the refrigerator disclosed in the above-mentioned patent document, when the user spills a drink in the storage chamber, the liquid may flow into the cold air duct through the discharge port. In addition, water droplets condensed on the back wall of the storage chamber may flow into the cold air duct from the discharge port. In these cases, there is a problem that the liquid flowing down the cold air duct is applied to the blower fan and the blower fan fails.

  An object of this invention is to provide the refrigerator which can prevent failure of a ventilation fan.

  In order to achieve the above object, a refrigerator according to the present invention includes a cold air duct disposed on a back surface of a storage room and a blower fan disposed on the cold air duct, wherein the cold air duct is located above the blower fan. A first passage that extends, a second passage that is connected to the upper end of the first passage through a connection port and extends downward, a first discharge port that opens to the second passage and faces the storage chamber, and a second passage The first discharge port is disposed at the upper end of the second passage, and the second discharge port is disposed below the connection port.

Further, the present invention, in the refrigerator having the above configuration, includes a front plate that covers the front surface of the cold air duct,
The first discharge port and the second discharge port are opened on the front plate, and the lower end of the second discharge port is disposed at the same height or lower than the bottom wall of the second passage. It is said.

  In the refrigerator configured as described above, the second passage is adjacent to the first passage in the left-right direction, and a front wall is provided between the connection port end of the first discharge port and the connection port. It is characterized by providing a protruding portion that protrudes rearward and extends vertically.

  In the refrigerator configured as described above, the second passage is adjacent to the front of the first passage, and the first discharge port is disposed below the communication port.

  Further, the present invention is characterized in that, in the refrigerator having the above configuration, an opening area of the first discharge port is larger than an opening area of the second discharge port.

  In the refrigerator configured as described above, the side wall of the second passage is inclined in a direction of narrowing the second passage downward.

  In the refrigerator having the above-described configuration, the side wall of the first passage is inclined and arranged vertically below the second discharge port.

  According to the present invention, the cold air duct has the first passage extending upward from the blower fan, and the second passage extending downward connected to the upper end of the first passage through the connection port. A first discharge port is disposed at the upper end of the second passage, and a second discharge port is disposed below the connection port of the second passage. Thereby, the liquid that has flowed into the cold air duct via the first discharge port flows down the second passage and is discharged to the storage chamber via the second discharge port. Further, the liquid flowing into the cold air duct via the second discharge port is also discharged to the storage chamber via the second discharge port. For this reason, failure of the blower fan due to the liquid flowing down the first passage can be prevented.

The side sectional view of the refrigerator concerning a 1st embodiment of the present invention. The front view inside the refrigerator which concerns on 1st Embodiment of this invention. The perspective view which looked at the duct member of the refrigerator which concerns on 1st Embodiment of this invention from the front side. The perspective view which looked at the duct member of the refrigerator concerning a 1st embodiment of the present invention from the back side. The rear view which shows the duct member of the refrigerator which concerns on 1st Embodiment of this invention. AA line sectional view in FIG. The rear view which shows the duct member of the refrigerator which concerns on 2nd Embodiment of this invention. The rear view which shows the duct member of the refrigerator which concerns on 3rd Embodiment of this invention. The rear view which shows the duct member of the refrigerator which concerns on 4th Embodiment of this invention. The rear view which shows the duct member of the refrigerator which concerns on 5th Embodiment of this invention. The longitudinal cross-sectional view of the duct member of the refrigerator which concerns on 6th Embodiment of this invention.

<First Embodiment>
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are a side sectional view and a front view showing the refrigerator according to the first embodiment. The refrigerator 1 has a heat insulating box 7 having a box shape with an open front. The outer surface of the heat insulating box 7 is formed by the outer box 9, and the inner surface is formed by the inner box 8. The outer box 9 is made of a metal plate such as a steel plate, and the inner box 8 is made of a resin molded product. Between the outer box 9 and the inner box 8, a foam heat insulating material 10 such as urethane foam is filled.

  A refrigeration room (storage room) 2 in which stored items are refrigerated and the front surface is opened and closed by a door 2a is disposed above the heat insulating box 7. Below the refrigerating room 2, a freezing room 3 is stored via a heat insulating wall 6. A machine room 5 provided with a compressor 17 for operating a refrigeration cycle is provided at the lower rear of the freezer room 3.

  Cold air ducts 12 and 13 are provided behind the refrigerator compartment 2 and the freezer compartment 3. The cold air ducts 12 and 13 are formed by duct members 12 a and 13 a that are resin molded products arranged in front of the inner box 8. The back surfaces of the cold air ducts 12 and 13 are covered with the inner box 8.

  A discharge port 2b (first discharge port) and a discharge port 2c (second discharge port) facing the refrigerating chamber 2 are opened at the center in the left-right direction of the duct member 12a. The discharge port 2b is arranged above the discharge port 2c. A discharge port 3b and a return port 3c facing the freezer compartment 3 are opened in the duct member 13a. The discharge port 3b is arranged above the return port 3c.

  The cold air ducts 12 and 13 communicate with each other through a damper 16 provided on the heat insulating wall 6. A blower fan 14 is provided below the cold air duct 12, and a blower fan 15 and a cooler 20 are provided in the cold air duct 13.

  The cooler 20 becomes a low temperature part of the refrigeration cycle operated by the compressor 17 and generates cold air. The blower fan 15 is disposed above the cooler 20, and the cool air generated by the cooler 20 is sent out by the blower fan 15.

  During operation of the blower fans 14 and 15, the amount of air flowing from the cold air duct 13 into the cold air duct 12 is adjusted by the opening / closing amount of the damper 16.

  3 and 4 show perspective views of the duct member 12a viewed from the front side and the back side, and FIG. 5 shows a rear view of the duct member 12a. The duct member 12a is attached to the inner box 8 while being biased to the left. The duct member 12a has the cold air duct 12 recessed on the back side, and a peripheral wall portion 34 that forms the peripheral wall of the cold air duct 12 projects rearward. The front surface of the cold air duct 12 is covered with a front plate 33 formed integrally with the peripheral wall portion 34. The back wall of the cold air duct 12 may be integrally formed by the duct member 12a, and the front plate 33 formed by a member different from the duct member 12a may be disposed on the front surface of the duct member 12a.

  The rear end of the peripheral wall portion 34 abuts on the inner box 8 via a seal member (not shown), and the cold air duct 12 is formed in a region surrounded by the front plate 33, the peripheral wall portion 34 and the inner box 8.

  The cold air duct 12 has a first passage 31 and a second passage 32 that extend vertically adjacent to each other in the left-right direction. The first passage 31 extends upward from the blower fan 14 (see FIG. 1), and is connected to the second passage 32 via the connection port 35 at the upper end. The second passage 32 is connected to the upper end of the first passage 31 via the connection port 35 and extends downward.

  Both side walls 34 a and 34 f and the top wall 34 b of the first passage 31 are formed by the peripheral wall portion 34. Further, the peripheral wall portion 34 forms the top wall 34c, the side walls 34d and 34f, and the bottom wall 34e of the second passage 32. The upper part of the side wall 34 f forms a partition part that partitions the first passage 31 and the second passage 32.

  The side wall 34f is inclined upward in a direction away from the second passage 32, and a connection port 35 arranged vertically is formed at the upper end of the side wall 34f.

  The first passage 31 is formed with a substantially constant passage width, and is inclined in a direction away from the second passage 32 upward from a lower portion arranged vertically below the bottom wall 34e of the second passage 32.

  Further, the first passage 31 is formed with a curved side wall 34a, and the cool air rising through the first passage 31 is smoothly guided to the connection port 35 along the side wall 34a. Thereby, the ventilation efficiency of the ventilation fan 14 can be improved.

  In the second passage 32, the discharge port 2 b and the discharge port 2 c are opened on the front plate 33, and the discharge port 2 b is arranged at the upper end portion of the second passage 32. Further, the discharge port 2 c has a smaller opening area than the discharge port 2 b and is disposed below the connection port 35. The lower end of the discharge port 2 c is arranged at the same height as the upper surface of the bottom wall 34 e of the second passage 32.

  When a drink is spilled in the refrigerator compartment 2 and the liquid flows into the second passage 32 from the discharge port 2b, the liquid flows down the second passage 32 and is discharged from the discharge port 2c to the refrigerator compartment 2. Further, when the liquid flows into the second passage 32 from the discharge port 2c, the liquid is immediately discharged from the discharge port 2c. For this reason, failure of the blower fan 14 due to the liquid flowing down the first passage 31 can be prevented. Further, it is possible to prevent a failure of the damper 16 and the blower fan 15 arranged below the blower fan 14.

  Further, the side walls 34d and 34f of the second passage 32 are inclined in a direction to narrow the second passage 32 downward, and the lower end of the discharge port 2c is disposed at the same height with respect to the bottom wall 34e of the second passage 32. ing. Thereby, the liquid which reached | attained on the bottom wall 34e of the 2nd channel | path 32 is guide | induced to the discharge outlet 2c, and can be easily discharged | emitted to the refrigerator compartment 2 side via the discharge outlet 2c. The lower end of the discharge port 2c that opens on the front plate 33 may be disposed below the bottom wall 34e of the second passage 32, and the lower end portion of the second passage 32 may be formed in a stepped shape with the front lowered. .

  6 shows a cross-sectional view taken along line AA of FIG. On the front wall of the second passage 32, there is provided a protrusion 36 that extends vertically from the end of the discharge port 2b on the connection port 35 side and protrudes backward. The protrusion 36 is formed by a wedge-shaped groove 36 a formed on the front plate 33. The protrusion 36 blocks the liquid flowing into the second passage 32 through the discharge port 2 b and prevents the liquid from flowing into the first passage 31 through the connection port 35. Further, the liquid flowing in from the discharge port 2b can be guided downward along the groove 36a and guided to the discharge port 2c by the side wall 34f.

  In addition, the protrusion part 36 should just be distribute | arranged between the edge part by the side of the connection port 35 of the discharge port 2b, and the connection port 35, and you may form the groove part 36a in another shape. Further, the protruding portion 36 may be formed by a rib protruding backward from the front plate 33 instead of the groove portion 36a. Further, the protruding portion 36 and the groove portion 36 a may be provided on the wall of the inner box 8 of the second passage 32. It is possible to prevent the liquid that has flowed into the second passage 32 through the discharge port 2 b from being guided downward along the wall of the inner box 8 and the liquid from flowing into the first passage 31 through the connection port 35. it can.

  In addition, the lower portion of the side wall 34f of the first passage 31 is inclined and arranged vertically below the discharge port 2c. Thereby, when the liquid leaks below the second passage 32 from the gap between the bottom wall 34 e and the inner box 8, the liquid flows downward along the outer surface of the side wall 34 f of the first passage 31. Thereby, the liquid leaked from the second passage 32 can be prevented from flowing into the first passage 31.

  Moreover, since the opening area of the discharge port 2b is larger than the opening area of the discharge port 2c, the cool air discharged from the upper part of the refrigerator compartment 2 increases. For this reason, the cool air descend | falls by the dead weight in the refrigerator compartment 2 spreads, and the cooling efficiency of the refrigerator compartment 2 can be improved.

  According to the present embodiment, the cold air duct 12 has the first passage 31 extending upward from the blower fan 14 and the second passage 32 extending downward connected to the upper end of the first passage 31 via the connection port 35. A discharge port 2 b (first discharge port) is disposed at the upper end of the second passage 32, and a discharge port 2 c (second discharge port) is disposed below the connection port 35 of the second passage 32. . As a result, the liquid flowing into the cold air duct 12 through the discharge port 2b flows down through the second passage 32 and is discharged to the refrigerator compartment 2 through the discharge port 2c. Further, the liquid flowing into the cold air duct 12 through the discharge port 2c is immediately discharged to the refrigerator compartment 2 through the discharge port 2c. For this reason, since the liquid which flowed into the cool air duct 12 from the discharge ports 2b and 2c does not flow into the 1st channel | path 31, the malfunction of the ventilation fan 14 by the liquid flowing down the 1st channel | path 31 can be prevented.

  Further, the discharge port 2b and the discharge port 2c are opened on the front plate 33 that covers the front surface of the cold air duct 12, and the lower end of the discharge port 2c is arranged at the same height or lower than the bottom wall 34e of the second passage 32. The Thereby, the liquid which reached the bottom wall 34e of the 2nd channel | path 32 can be reliably discharged | emitted from the discharge outlet 2c, and the liquid storage on the bottom wall 34e can be prevented.

  Further, a protruding portion 36 that protrudes rearward from the front wall (front plate 33) and extends up and down is provided between the end of the discharge port 2b on the connection port 35 side and the connection port 35. Thereby, the liquid that has flowed into the second passage 32 via the discharge port 2 b can be blocked, and the liquid can be more reliably prevented from flowing into the first passage 31 via the connection port 35.

  Moreover, since the opening area of the discharge port 2b is larger than the opening area of the discharge port 2c, a lot of cool air can be discharged from the upper part of the refrigerator compartment 2, and the cooling efficiency of the refrigerator compartment 2 can be improved.

  Further, since the side wall 34f of the second passage 32 is inclined in the direction of narrowing the second passage 32 downward, the liquid flowing down the second passage 32 can be more reliably guided to the discharge port 2c.

  Further, the lower portion of the side wall 34f of the first passage 31 is inclined and is disposed vertically below the discharge port 2c. Thereby, the liquid leaked below the second passage 32 from the gap between the bottom wall 34e and the inner box 8 flows downward along the outer surface of the side wall 34f. Thereby, the liquid leaked from the second passage 32 can be prevented from flowing into the first passage 31.

<Second Embodiment>
Next, FIG. 7 shows a rear view of the duct member 12a of the refrigerator 1 according to the second embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment shown in above-mentioned FIGS. 1-6, and description is abbreviate | omitted. In the present embodiment, a discharge port 41 is provided in the first passage 31. Other parts are the same as those in the first embodiment.

  The discharge port 41 opens to the lower part on the side wall 34a and the side wall 34f of the first passage 31. The cool air flowing upward in the first passage 31 is discharged to both sides via the discharge port 41. Thereby, cold air having a lower temperature than the first passage 31 can be discharged into the refrigerator compartment 2. For this reason, the bottom part of the refrigerator compartment 2 can be formed in low temperature, such as a chilled temperature range.

  Since the discharge port 41 is open to the side, the liquid flows into the first passage 31 through the discharge port 41 even when the container containing the liquid is tilted backward in the refrigerator compartment 2. It is hard to do.

<Third Embodiment>
Next, FIG. 8 shows a rear view of the duct member 12a of the refrigerator 1 according to the third embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment shown in above-mentioned FIGS. 1-6, and description is abbreviate | omitted. In the present embodiment, the second passage 32 is provided with a discharge port 42 in addition to the discharge port 2b and the discharge port 2c. Other parts are the same as those in the first embodiment.

  The discharge port 42 opens on the front plate 33 of the second passage 32, and is disposed between the discharge port 2b and the discharge port 2c. The liquid that has flowed into the second passage 32 via the discharge port 2b and the discharge port 42 flows down the second passage 32 and is discharged from the discharge port 2c to the refrigerator compartment 2. For this reason, the inflow of the liquid to the 1st channel | path 31 can be prevented.

  Further, by providing the discharge port 42 in the second passage 32, it is possible to supply cold air to the refrigerator compartment 2 even if the respective opening areas of the discharge port 2 b and the discharge port 42 are reduced. When a drink is spilled in the refrigerator compartment 2, there is a high possibility that the liquid flows into the second passage 32 only from one of the discharge port 2b and the discharge port 42 separated in the vertical direction. For this reason, each opening area of the discharge port 2b and the discharge port 42 can be made small, and the inflow of the liquid to the 2nd channel | path 32 can be reduced.

<Fourth embodiment>
Next, FIG. 9 shows a rear view of the duct member 12a of the refrigerator 1 according to the fourth embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment shown in above-mentioned FIGS. 1-6, and description is abbreviate | omitted. In the present embodiment, the discharge port 2b is arranged so as to be shifted in the left-right direction with respect to the discharge port 2c. Other parts are the same as those in the first embodiment.

  The center in the left-right direction of the discharge port 2b is shifted from the center in the left-right direction of the discharge port 2c in a direction away from the connection port 35. Further, the end of the discharge port 2b on the connection port 35 side is shifted by a distance W in the direction away from the connection port 35 from the end of the discharge port 2c on the connection port 35 side.

  Thereby, it is possible to more reliably prevent the liquid that has flowed into the second passage 32 through the discharge port 2 b from flowing into the first passage 31 through the connection port 35. A discharge port 2c is arranged vertically below the end of the discharge port 2b on the connection port 35 side, and the liquid flowing down from the discharge port 2b can be easily guided by the discharge port 2c.

<Fifth Embodiment>
Next, FIG. 10 shows a rear view of the duct member 12a of the refrigerator 1 according to the fifth embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment shown in above-mentioned FIGS. 1-6, and description is abbreviate | omitted. In the present embodiment, the first passage 31 branches into the branch portions 31a and 31b. Other parts are the same as those in the first embodiment.

  The 1st channel | path 31 branches right and left by the branch parts 31a and 31b above the ventilation fan 14 (refer FIG. 2). The branch portions 31a and 31b extend in the vertical direction, and are connected to the second passage 32 via the connection ports 35 at the upper ends. Further, a discharge port 41 is opened laterally on the outer side wall 34a of each branch path 31a, 31b.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. Moreover, since branch part 31a, 31b is distribute | arranged to the both sides of the back surface of the refrigerator compartment 2, cold air can be supplied to the back side edge part of the refrigerator compartment 2 from the discharge outlet 41. FIG. For this reason, the inside of the refrigerator compartment 2 can be cooled uniformly.

<Sixth Embodiment>
Next, FIG. 11 has shown the longitudinal cross-sectional view of the duct member 12a of the refrigerator 1 which concerns on 6th Embodiment. In addition, the same code | symbol is attached | subjected to the part similar to 1st Embodiment shown in above-mentioned FIGS. 1-6, and description is abbreviate | omitted. In the present embodiment, the second passage 32 is disposed adjacent to the front of the first passage 31. Other parts are the same as those in the first embodiment.

  The first passage 31 of the cold air duct 12 extends upward from the blower fan 14 in the center in the left-right direction of the refrigerator compartment 2. The second passage 32 is adjacent to the front of the first passage 31 via the partition wall 34g, and communicates with the first passage 31 via a vertical connection port 35 formed above the partition wall 34g. The second passage 32 is adjacent to the upper portion of the first passage 31 and is shorter than the first passage 31 in the vertical direction.

  The front surface of the duct member 12 a is covered with the front plate 33. The upper portion 33b of the front plate 33 is bent in an L shape to form the front wall and the bottom wall 34e of the second passage 32. The lower portion 33a of the front plate 33 extends downward from the rear end of the upper portion 33b and is disposed in the same plane as the partition wall 34g. Thereby, the front wall of the 1st channel | path 31 is formed of the lower part 33a of the front plate 33, and the partition wall 34g.

  A discharge port 2b is opened in the front wall of the second passage 32, and a discharge port 2c is opened in the bottom wall 34e. The discharge port 2b is disposed below the connection port 35.

  The liquid flowing into the cold air duct 12 from the discharge port 2b flows down through the second passage 32 and is discharged from the discharge port 2c. Therefore, the same effect as the first embodiment can be obtained.

  Moreover, since the 2nd channel | path 32 adjoins the front of the 1st channel | path 31, the downward direction of the 2nd channel | path 32 can be utilized as a storage area. For this reason, the volumetric efficiency of the refrigerator 1 can be improved.

  In addition, since the discharge port 2b is disposed below the connection port 35, the liquid can be prevented from flowing into the first passage 31 even if the liquid flows into the cold air duct 12 from the discharge port 2b.

  Further, since the discharge port 2c opens in the bottom wall 34e of the second passage 32, liquid storage on the bottom wall 34e can be reliably prevented.

  ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the refrigerator which has the cold air duct which discharges cold air to a storage room.

1 Refrigerator 2 Cold room (storage room)
2a, 3a Door 2b, 2c, 3b, 41, 42 Discharge port 3 Freezer room 3c Return port 5 Machine room 6 Heat insulation wall 7 Heat insulation box body 8 Inner box 9 Outer box 10 Foam insulation material 12, 13 Cold air duct 12a, 13a duct Members 14, 15 Blower fan 16 Damper 17 Compressor 20 Cooler 31 First passage 31a, 31b Branching portion 32 Second passage 33 Front plate 33a Lower portion 33b Upper portion 34 Peripheral wall portion 34a, 34d, 34f Side wall 34b, 34c Top wall 34e Bottom Wall 34g Partition wall 35 Connection port 36 Projection W Distance

Claims (7)

  In a refrigerator including a cold air duct disposed on a back surface of a storage chamber and a blower fan disposed in the cold air duct, the cold air duct extends upward from the blower fan, and an upper end of the first passage. A second passage that is connected via a connection port and extends downward; and a first discharge port and a second discharge port that open to the second passage and face the storage chamber, wherein the first discharge port The refrigerator, which is disposed at an upper end portion of the second passage, and wherein the second discharge port is disposed below the connection port. A front plate covering a front surface of the cold air duct;
The first discharge port and the second discharge port are opened on the front plate, and the lower end of the second discharge port is disposed at the same height or lower than the bottom wall of the second passage. The refrigerator according to claim 1. The second passage is adjacent in the left-right direction of the first passage;
The protrusion part which protruded back from the front wall and extended up and down was provided between the edge part by the side of the said connection port of the said 1st discharge port, and the said connection port, The Claim 1 or Claim 2 characterized by the above-mentioned. Refrigerator.   The refrigerator according to any one of claims 1 to 3, wherein the second passage is adjacent to the front of the first passage, and the first discharge port is disposed below the communication port. .   The refrigerator according to any one of claims 1 to 4, wherein an opening area of the first discharge port is larger than an opening area of the second discharge port.   6. The refrigerator according to claim 5, wherein a side wall of the second passage is inclined in a direction of narrowing the second passage downward.   The refrigerator according to any one of claims 1 to 6, wherein a side wall of the first passage is inclined and arranged vertically below the second discharge port.

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