JP2019100637A - refrigerator - Google Patents

Abstract

To provide a refrigerator which enables a user to select and close an air channel in a shield device easily.SOLUTION: A refrigerator of the invention includes: a cooler 45 of a refrigeration cycle which cools air supplied to a cold room 15 etc. via a supply air channel; a cooling room 26 in which the cooler 45 is disposed and an air vent 27 leading to the cold room 15 etc. is formed; a blower 47 which sends air supplied from the air vent 27 to the cold room 15 etc.; and a shield device 70 which at least partially closes the air vent 27. Further, the shield device 70 has a blower cover 72 which closes the air vent 27 from the outer side of the cooling room 26. The blower cover 72 has: a main surface part 79; a side surface part 80 erected from a periphery part of the main surface part 79; an opening 76 formed by partially opening the side surface part 80; and a movable flap 83 which closes the opening 76 in an openable and closable manner.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a refrigerator for cooling and storing food or the like in a storage room, and more particularly to a refrigerator provided with a shielding device for appropriately closing an air passage connected to the storage room.

  BACKGROUND ART Conventionally, there is known a refrigerator which appropriately cools a plurality of storage rooms with one cooler as described in Patent Document 1. FIG. 9 schematically shows the refrigerator 100 described in this document. In the refrigerator 100 shown in FIG. 9, a refrigerator compartment 101, a freezer compartment 102 and a vegetable compartment 103 are formed from above. A cooling chamber 104 in which a cooler 108 is accommodated is formed on the back side of the freezing chamber 102, and cold air is supplied to each storage chamber to a dividing wall 105 that divides the cooling chamber 104 and the freezing chamber 102. An opening 106 is formed. Further, a blower fan 107 for blowing cold air is disposed in the opening 106, and a blower cover 110 covering the blower fan 107 is disposed on the side of the freezer compartment 102. A damper 114 is disposed in the middle of the air passage 109 through which the cold air supplied to the refrigerator compartment 101 flows.

  The above-described fan cover 110 will be described in detail with reference to FIG. The fan cover 110 is formed with a recess 111 having a substantially rectangular shape, and the upper portion of the recess 111 is partially cut away to form an opening 113. Here, in the situation where the blower cover 110 covers the above-described blower fan 107, the opening 113 of the blower cover 110 communicates with the air passage 109 on the refrigerator main body side.

  The refrigerator 100 configured as described above operates as follows. Referring to FIG. 9, first, in the case of cooling both the refrigerator compartment 101 and the freezer compartment 102, the fan cover 110 is separated from the blower fan 107, the damper 114 is opened, and the blower fan 107 is rotated in this state. Then, part of the cold air cooled by the cooler 108 inside the cooling chamber 104 is blown to the freezing chamber 102 by the blowing force of the blowing fan 107. Further, another part of the cold air is blown to the refrigerator compartment 101 via the air passage 109, the damper 114 and the air passage 109. From this, both the freezer compartment 102 and the refrigerator compartment 101 are cooled.

  On the other hand, when cooling only the refrigerator compartment 101, the blower fan 107 is covered with the blower cover 110, the damper 114 is opened, and the cold air cooled by the cooler 108 is blown by the blower fan 107 in this state. When the fan cover 110 is closed, the opening 113 formed on the top of the fan cover 110 communicates with the air passage 109. Therefore, cold air blown by the blower fan 107 is supplied to the refrigerating chamber 101 via the opening 113, the damper 114, and the air passage 109 described above.

  As described above, by using the blower cover 110 in which the opening 113 is formed, it is possible to appropriately cool the plurality of storage chambers with one cooler 108.

JP, 2013-2664, A

  In the configuration of the refrigerator 100 described above, the damper 114 interposed in the air passage 109 is an essential element for adjusting the cold air supplied to the refrigerator compartment 101. Further, since the opening 113 is formed in the upper portion of the fan cover 110, the cooling chamber 104 can not be shielded only by covering the opening 106 with the fan cover 110. Therefore, in order to prevent the warm air inside the cooling chamber 104 from flowing into the cold storage chamber 101 in the defrosting process, the damper 114 needs to be closed. That is, the damper 114 is also required for the defrosting process.

  However, when the damper 114 is provided in addition to the fan cover 110 for the purpose of adjusting the air flow rate, the entire structure of the apparatus becomes complicated, and the refrigeration control also becomes complicated.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a refrigerator which can easily select and close an air passage with a shielding device.

  The refrigerator according to the present invention includes a refrigeration cycle cooler for cooling air supplied to a storage room via a supply air passage, and a cooling provided with the cooler and an air outlet connected to the storage room. A chamber, a blower for blowing the air supplied from the blower toward the storage chamber, and a shielding device for at least partially closing the blower, the shielding device including the blower; It has a blower cover closed from the outside of the cooling chamber, and the blower cover is formed by partially opening the main surface portion, a side surface portion erected from the peripheral portion of the main surface portion, and the side surface portion. And a movable flap that closes the opening in an openable and closable manner.

  Further, in the refrigerator according to the present invention, the blower cover includes biasing means for biasing the movable flap in the opening direction, a contact portion is formed in the vicinity of the blower cover, and the movable flap is in contact with the contact. When the fan cover is moved, the movable flap is separated from the contact portion and is opened by the biasing force of the biasing unit.

  Further, in the refrigerator according to the present invention, the biasing means is a spring which is in contact with the movable flap from the inside.

  Further, in the refrigerator according to the present invention, the contact portion is a wall portion forming the supply air path connected to the opening portion of the fan cover.

  In the refrigerator according to the present invention, the width of the movable flap is shorter than the width of the air supply path.

  In the refrigerator according to the present invention, the movable flap and a fixed flap fixed to the opening are disposed at the opening of the fan cover.

  Further, the refrigerator according to the present invention further includes a shielding cover disposed to face the fan cover, and the fan cover and the shielding cover are separated, so that the air supply path is fully open. When the fan cover is covered by the shielding cover and the movable flap is closed, the supply air passage is closed, and the fan cover is covered by the shielding cover, and When the movable flap is in the open state, the air supply path is partially closed in a semi-shielded state.

  The refrigerator according to the present invention includes a refrigeration cycle cooler for cooling air supplied to a storage room via a supply air passage, and a cooling provided with the cooler and an air outlet connected to the storage room. A chamber, a blower for blowing the air supplied from the blower toward the storage chamber, and a shielding device for at least partially closing the blower, the shielding device including the blower; It has a blower cover closed from the outside of the cooling chamber, and the blower cover is formed by partially opening the main surface portion, a side surface portion erected from the peripheral portion of the main surface portion, and the side surface portion. And a movable flap that closes the opening in an openable and closable manner. Therefore, since the movable flap that closes the opening of the fan cover can be opened and closed, the inner space of the fan cover and the supply air path can be shut off by closing the movable flap. Therefore, it is not necessary to arrange a damper in the supply air passage, and the configuration of the entire refrigerator can be simplified.

  Further, in the refrigerator according to the present invention, the blower cover includes biasing means for biasing the movable flap in the opening direction, a contact portion is formed in the vicinity of the blower cover, and the movable flap is in contact with the contact. When the fan cover is moved, the movable flap is separated from the contact portion and is opened by the biasing force of the biasing unit. Therefore, by moving the fan cover, the movable flap can be opened and closed, so that the mechanism for opening and closing the movable flap can be simplified.

  Further, in the refrigerator according to the present invention, the biasing means is a spring which is in contact with the movable flap from the inside. Therefore, the movable flap can be biased outward with a simple configuration.

  Further, in the refrigerator according to the present invention, the contact portion is a wall portion forming the supply air path connected to the opening portion of the fan cover. Therefore, since the wall part which forms the supply air path which is a part of main part of a refrigerator can be used as a contact part, the structure which manages opening and closing of a movable flap can be simplified.

  In the refrigerator according to the present invention, the width of the movable flap is shorter than the width of the air supply path. Therefore, the movable flap can be opened and closed inside the supply air path.

  In the refrigerator according to the present invention, the movable flap and a fixed flap fixed to the opening are disposed at the opening of the fan cover. Therefore, it is possible to change the width of the movable flap in accordance with the width of the supply air passage.

  Further, the refrigerator according to the present invention further includes a shielding cover disposed to face the fan cover, and the fan cover and the shielding cover are separated, so that the air supply path is fully open. When the fan cover is covered by the shielding cover and the movable flap is closed, the supply air passage is closed, and the fan cover is covered by the shielding cover, and When the movable flap is in the open state, the air supply path is partially closed in a semi-shielded state. Therefore, by appropriately covering the fan cover with the shielding cover and opening and closing the movable flap, a shielding state that almost completely closes the supply air path and a semi-shielding state that partially closes the supply air path are easily realized. be able to.

It is a front view showing the appearance of the refrigerator concerning the embodiment of the present invention. It is a side sectional view showing the internal configuration of the refrigerator concerning the embodiment of the present invention. It is an expanded side sectional view showing the structure near the cooling room of the refrigerator concerning the embodiment of the present invention. It is an exploded perspective view showing a shielding device adopted with a refrigerator concerning an embodiment of the present invention. The refrigerator which concerns on embodiment of this invention is shown, (A) is a perspective view which shows the shielding apparatus of a full open state, (B) is sectional drawing of the shielding apparatus of the state. The refrigerator which concerns on embodiment of this invention is shown, (A) is a perspective view which shows the shielding apparatus of a shielding state, (B) is sectional drawing of the shielding apparatus of the state. The refrigerator which concerns on embodiment of this invention is shown, (A) is a perspective view which shows the shielding apparatus of a semi-shielding state, (B) is sectional drawing of the shielding apparatus of the state. The refrigerator which concerns on embodiment of this invention is shown, (A) is sectional drawing which shows the shielding apparatus of a full open state, (B) is sectional drawing which shows the shielding apparatus of a shielding state, (C) is a half. It is sectional drawing which shows the shielding apparatus of a shielding state. It is an enlarged side view showing the refrigerator concerning the background art. It is a perspective view showing the fan cover adopted by the refrigerator concerning the background art.

  Hereinafter, the refrigerator 10 which concerns on embodiment of this invention is demonstrated in detail based on drawing. In the following description, the same reference numeral is attached to the same member in principle, and the repeated description is omitted. Furthermore, in the following description, although each direction of upper and lower, front and rear, right and left is used suitably, right and left mean right and left when the refrigerator 10 is seen from the front.

  FIG. 1: is a front external view which shows schematic structure of the refrigerator 10 of this form. As shown in FIG. 1, the refrigerator 10 includes a heat insulation box 11 as a main body, and a storage room for storing food or the like is formed inside the heat insulation box 11. As the storage room, the uppermost stage is a refrigerating room 15, the lower left side is an ice making room 16, the right side is an upper freezing room 18, the lower stage is a lower freezing room 19 and the lowermost is a vegetable room 20. The ice making chamber 16, the upper stage freezing room 18 and the lower stage freezing room 19 are all storage rooms of the freezing temperature range, and in the following description, they may be collectively referred to as the freezing room 17.

  The front surface of the heat insulation box 11 is open, and the heat insulation door 21 etc. is provided in the opening corresponding to each said storage room, respectively so that opening and closing is possible. The heat insulation door 21 divides the front of the refrigerator compartment 15 in the left-right direction and closes it, and the outer upper and lower ends in the width direction of the heat insulation door 21 are rotatably attached to the heat insulation box 11. Moreover, the heat insulation doors 22, 23, 24, 25 are integrally combined with the storage container, respectively, and are supported by the heat insulation box 11 so as to be able to be pulled out to the front of the refrigerator 10.

  FIG. 2 is a side sectional view showing a schematic structure of the refrigerator 10. As shown in FIG. 2, the heat insulation box 11 which is the main body of the refrigerator 10 is disposed with a steel plate outer box 12 whose front face is open and a space in the outer box 12 and the front face is open. It is comprised from the inner box 13 made of a synthetic resin. In the gap between the outer case 12 and the inner case 13, a heat insulating material 14 made of foamed polyurethane is filled and foamed. In addition, the heat insulation structure similar to the heat insulation box 11 is employ | adopted also as each heat insulation door 21-25 mentioned above.

  The refrigerator compartment 15 and the freezer compartment 17 located in the lower stage are separated by the heat insulation partition wall 42. The ice making chamber 16 and the upper freezing chamber 18 inside the freezing chamber 17 are separated by a partition wall not shown here. Also, cold air, which is cooled air, is in fluid communication between the ice making chamber 16 and the upper freezing chamber 18 and the lower freezing chamber 19 provided at the lower stage thereof. And between the freezer compartment 17 and the vegetable compartment 20 is divided by the heat insulation partition wall 43.

  On the back of the refrigerator compartment 15, there is formed a refrigerator compartment air supply passage 29 which is partitioned by a synthetic resin partition body 65 and serves as an air supply conduit for supplying cold air to the refrigerator compartment 15. In the cold storage room air supply passage 29, a blowout port 33 for flowing cold air to the cold storage room 15 is formed.

  On the back side of the freezer compartment 17, a freezer compartment supply air path 31 for flowing the cold air cooled by the cooler 45 to the freezer compartment 17 is formed. A cooling chamber 26 is formed further to the back of the freezer compartment supply air passage 31, and inside thereof, a cooler 45 which is an evaporator for cooling the air circulating in the compartment is disposed .

  The cooler 45 is connected to the compressor 44, a radiator (not shown), and a capillary tube which is expansion means (not shown) via a refrigerant pipe, and constitutes a vapor compression type refrigeration cycle circuit.

  FIG. 3 is a side sectional view showing the structure in the vicinity of the cooling chamber 26 of the refrigerator 10. The cooling chamber 26 is provided on the back side of the freezer compartment supply air passage 31 inside the heat insulation box 11. The cooling chamber 26 and the freezing chamber 17 are separated by a partition 66 made of synthetic resin.

  The refrigerating chamber supply air passage 31 formed in front of the cooling chamber 26 is a space formed between the cooling chamber 26 and the front cover 67 made of synthetic resin assembled in front of the cooling chamber 26. It becomes a windy way to let cool air flow. The front cover 67 is formed with an outlet 34 which is an opening for blowing cold air into the freezing chamber 17.

  A return port 38 for returning air from the freezing chamber 17 to the cooling chamber 26 is formed on the lower rear surface of the lower stage freezing chamber 19. And below the cooling chamber 26, the return port 28 which is connected to this return port 38 and which sucks the return cold air from each storage chamber into the inside of the cooling chamber 26 is formed. In the return port 28, cold air returning via the return port 39 (FIG. 2) of the vegetable room 20 and the vegetable room return air path 37 also flows.

  Further, below the cooler 45, a defrost heater 46 is provided as a defrosting means for melting and removing the frost adhering to the cooler 45. The defrost heater 46 is an electric resistance heating type heater.

  In the upper part of the cooling chamber 26, a blower outlet 27 which is an opening connected to each storage chamber is formed. The blower outlet 27 is an opening through which the cold air cooled by the cooler 45 flows, and brings the cooling chamber 26 into communication with the refrigerating chamber supply air passage 29 and the freezing chamber supply air passage 31. A blower 47 for delivering cold air toward the freezer compartment 17 or the like is disposed in the blower opening 27. The configuration of the blower 47 will be described later. Further, a damper is not interposed in the cold storage room air passage 29, and the function of the damper is carried by the movable flap 83 of the shielding device 70 described later.

  In addition, a shielding device 70 provided with a blower cover 72 for closing the blower outlet 27 is provided outside the blower outlet 27 of the cooling chamber 26. The advancing and retracting operation for opening and closing the fan cover 72 is controlled by a drive shaft 71 shown by a dotted line here, and such matters will be described later.

  In the fan cover 72, the surface facing the cooling chamber 26 is formed in a concave shape. Thus, the blower cover 72 can close the blower opening 27 without contacting the blower 47. Further, the shielding device 70 is covered with a shielding device cover 69 from the front.

  With reference to FIG. 4, the structure of the shielding apparatus 70 employ | adopted as the above-mentioned refrigerator 10 is demonstrated. FIG. 4 is an exploded perspective view showing each member constituting the shielding device 70 in the front-rear direction.

  Shielding device 70 has fan cover 72 which covers fan 47, and shield base 73 which attaches fan cover 72 to the refrigerator 10 main part. The main function of the shielding device 70 is to supply the cold air blown by the rotation of the blower 47 to a desired storage room by appropriately putting the blower 47 and the air outlet 27 into the non-closed state or the closed state. It is in. Further, by closing the shielding device 70, the warm air generated in the defrosting stroke of the cooler 45 is prevented from flowing into the freezer compartment 17 and the like. Here, warm air refers to air heated by the defrost heater 46.

  The blower cover 72 is obtained by injection molding a synthetic resin material into a substantially lid shape, and includes a main surface 79 having a substantially square shape in a front view and a side surface 80 extending rearward from the peripheral edge of the main surface 79. have. A screw hole 78 is formed circularly penetrating around the center of the main surface portion 79, and a screw groove is formed by spirally recessing the inner side surface of the screw hole 78. An opening 76 is formed by opening the upper side surface 80 of the fan cover 72. The opening 76 has a rectangular shape elongated on the left and right sides when viewed from above. By forming the opening 76, even when the shielding device 70 is in the closed state, the cooling chamber 26 and the above-described refrigerating chamber supply air passage 29 can be communicated via the opening 76.

  An insertion hole 77 is formed by circularly opening the vicinity of the peripheral portion of the main surface portion 79 of the fan cover 72. As described later, the support hole 74 of the shielding base 73 penetrates the insertion hole 77. The role of the fan cover 72 is, as described above, to substantially close the fan 47 disposed at the air outlet 27 of the cooling chamber 26. A fixed flap 82 and a movable flap 83 are attached to the opening 76 of the fan cover 72, and such matters will be described later.

  The drive shaft 71 has a substantially cylindrical shape, and is provided with a screw thread (not shown) in which a part of the side surface is continuously and helically projected. The drive shaft 71 is a drive mechanism that moves the blower cover 72 in the front-rear direction. The screw thread formed on the side surface of the drive shaft 71 and the screw groove formed on the side surface of the screw hole 78 of the fan cover 72 are screwed together under use conditions. That is, a screw mechanism is formed by the screw thread of the drive shaft 71 and the screw groove of the screw hole 78 of the fan cover 72. A stepping motor (not shown) is built in the inside of the drive shaft 71, and the drive shaft 71 is rotated by a predetermined angle by the driving force of the motor. For example, when the drive shaft 71 rotates clockwise as viewed from the front, the blower cover 72 is separated from the shielding base 73, and the blower cover 72 shown in FIG. Therefore, the cold air blown by the blower 47 is not supplied to the freezer compartment 17. On the other hand, when the drive shaft 71 rotates counterclockwise as viewed from the front, for example, the blower cover 72 moves toward the shielding base 73 side, and the blower opening 27 shown in FIG. 2 is not covered by the blower cover 72 and is not closed. It becomes a state. Therefore, the cold air blown by the blower 47 is supplied to the freezer compartment 17 via this gap.

  The shielding base 73 is a member made of a synthetic resin having a shape similar to that of the fan cover 72 described above. Inside the shielding base 73, a space capable of housing the fan cover 72 is formed. The shielding base 73 is formed with a support portion 74 projecting in a cylindrical shape toward the rear. Here, three support portions 74 are formed around the drive shaft 71. The support portion 74 penetrates the insertion hole 77 of the fan cover 72 described above. The shield base 73 is disposed between the rear side surface of the freezer compartment 17 and the partition 66 and fixed to the front cover 67, as shown in FIG.

  The blower 47 includes, for example, a fan 50, which is a centrifugal fan, a motor (not shown) that rotates the fan 50, and a fan support 81 that rotatably supports the fan 50 and the motor. Since the periphery of the fan support 81 is fixed to the tip of the support 74 of the shielding base 73, the position of the blower 47 is fixed.

  The above-described shielding device 70 can be in a fully open state, a shielded state, and a semi-shielded state described later.

  The configuration of the shielding device 70 in each of the above-described states will be described with reference to FIGS. 5 to 7. 5 shows the shielding device 70 in the fully open state, FIG. 6 shows the shielding device 70 in the shielding state, and FIG. 7 shows the shielding device 70 in the semi shielding state. In FIG. 6, the fan cover 72 is in the half open state, thereby realizing the shielding state in which the air passage is blocked by the shielding device 70. In FIG. 7, the fan cover 72 is fully closed to realize a semi-shielded state in which the air passage is partially blocked by the shielding device 70.

  The configuration of the shielding device 70 in the fully open state will be described with reference to FIG. FIG. 5 (A) is a perspective view showing the shielding device 70 in the fully open state, and FIG. 5 (B) is a cross-sectional view taken along the line B-B in FIG. 5 (A). Here, when the shielding device 70 is fully opened, as described below, the shielding device 70 does not close the blowing port 27 (FIG. 3) of the cooling chamber 26, and cold air is supplied to the freezing chamber 17.

  Referring to FIG. 5A, an opening 76 is formed by opening the upper end portion of fan cover 72 in a rectangular shape. The opening 76 is a portion in which the side surface 80 of the fan cover 72 is opened in a rectangular shape. The opening 76 is closed by a fixed flap 82 and a movable flap 83. The fixed flap 82 closes the rear side of the opening 76, and the movable flap 83 closes the front side of the opening 76. The fixed flaps 82 and the movable flaps 83, like the blower cover 72, are made of a synthetic resin plate material. The fixed flap 82 is fixed to the fan cover 72 and does not perform opening and closing operations. On the other hand, the movable flap 83 is rotatably attached to the fan cover 72. Here, it is also possible to cover the opening 76 with only the movable flap 83. Further, as described above, by closing the opening 76 with the fixed flap 82 and the movable flap 83, the width in the front-rear direction of the movable flap 83 is narrower than the width of the side surface 80 of the fan cover 72. . By doing this, as described later, the width of the movable flap 83 can be adjusted in accordance with the width of the supply air path connected to the opening 76.

  As shown in FIG. 5 (B), the front end of the movable flap 83 is rotatably provided relative to the fan cover 72 main body. The movable flap 83 is biased in the clockwise direction from this viewpoint with its front end as a rotation center. This biasing force can be applied by a spring such as a torsion spring disposed near the front end of the movable flap 83 inside the blower cover 72. In this figure, a torsion spring, which is a biasing means for generating a biasing force, is not shown. Here, by adjusting the biasing force generated from the torsion spring, the operation noise generated when the movable flap 83 opens and closes can be reduced.

  Referring to FIG. 5B, on the rear side of blower 47, a substantially lid-shaped shielding cover 86 that meshes with blower cover 72 is disposed. When the shielding cover 86 is in surface contact with the side surface 80 of the shielding cover 86, the opening of the shielding cover 86 can be appropriately closed, and the internal space of the shielding cover 86 can be substantially sealed. The shielding cover 86 is fixed to the main body side of the refrigerator 10. The shielding cover 86 is formed with an opening (not shown) here, and the cold air blown by the above-described blower 47 flows into the inside of the blower cover 72 via the opening.

  Referring to FIG. 5A, on the upper end of the shielding base 73, a pressing portion 84 projecting rearward is formed. The pressing portion 84 presses the movable flap 83 from the upper side. The rear end of the pressing portion 84 is disposed at a position where the movable flap 83 is pressed when the shielding base 73 is fully opened, and the movable flap 83 is not pressed when the shielding base 73 is fully closed.

  Here, the pressing portion 84 is illustrated as the contact portion that regulates the opening operation of the movable flap 83, but as will be described later, the movable flap 83 can be moved by bringing a wall-like member forming an air passage into contact with it. The opening operation of the flap 83 can also be regulated. Further, by adjusting the length of the pressing portion 84 in the front-rear direction, the timing of opening and closing the movable flap 83 can be adjusted.

  As shown in FIG. 5 (B), when the shielding device 70 is in the fully open state, the fan cover 72 and the shielding cover 86 are separated from each other, and there is a gap between them. Cold air is supplied to each storage room via this gap. Specifically, cold air is supplied to the freezer compartment 17 via the freezer compartment supply air passage 31. Here, as shown in FIG. 5A, since the movable flap 83 of the blower cover 72 is pressed by the pressing portion 84 from the outside, the closed state is maintained. Therefore, referring to FIG. 3, cold air is not blown to the cold storage room air supply path 29 side.

  The configuration of the shielding device 70 in the shielding state will be described with reference to FIG. Here, by closing the fan cover 72 about half, a shielding state in which the shielding device 70 blocks the air path is realized.

  FIG. 6 (A) is a perspective view showing the shielding device 70 in the shielding state, and FIG. 6 (B) is a cross-sectional view taken along the line B-B in FIG. 6 (A). Here, when the shielding device 70 is in the shielding state, as described below, the shielding device 70 blocks the air outlet 27 (FIG. 3) of the cooling chamber 26 and cold air or the like does not leak from the cooling chamber 26 to the outside.

  Referring to FIGS. 6A and 6B, when drive shaft 71 is rotated in a predetermined direction, fan cover 72 moves rearward. As a result, as shown in FIG. 6 (B), the main surface portion 79 of the blower cover 72 reaches the middle portion of the support portion 74. Further, the rear side opening of the fan cover 72 is closed by a shielding cover 86. That is, the side portions of the fan cover 72 and the shielding cover 86 come in close contact with each other. Further, the movable flap 83 of the fan cover 72 remains pressed by the pressing portion 84, and the movable flap 83 is in the closed state. With this configuration, the shielding state of the shielding device 70 is realized.

  Referring to FIG. 3, when shielding device 70 is in the shielding state, air outlet 27 and blower 47 of cooling chamber 26 are covered with shielding device 70. Therefore, each air supply passage and the cooling chamber 26 are divided. In the defrosting process for removing the frost formation of the cooler 45, the control device stops the compressor 44 and the fan 50 and energizes the defrost heater 46 to heat the air in the cooling chamber 26. In such a defrosting process, since the shielding device 70 is in the shielding state, each supply air path and the cooling chamber 26 are divided, and the heated warm air is supplied to each supply air path via the air outlet 27. It is possible to prevent leakage.

  The configuration of the shielding device 70 in the semi-shielded state will be described with reference to FIG. Here, by setting the fan cover 72 in the fully closed state, the half cover state in which the movable flap 83 is in the open state is realized while the fan cover 72 closes the air passage.

  FIG. 7A is a perspective view showing the shielding device 70 in a semi-shielded state, and FIG. 7B is a cross-sectional view taken along the line B-B in FIG. 7A. Here, when the shielding device 70 is in the semi-shielded state, as described below, the shielding device 70 is configured to supply cold air to the refrigerating chamber supply air passage 29 while closing the air outlet 27 (FIG. 3) of the cooling chamber 26. become.

  Referring to FIGS. 7A and 7B, when drive shaft 71 is further rotated in the predetermined direction, fan cover 72 moves rearward. As a result, as shown in FIG. 7B, the main surface portion 79 of the blower cover 72 reaches the rear end of the support portion 74. Further, the rear side opening of the fan cover 72 is closed by a shielding cover 86. That is, as in the case of FIG. 6, the side portions of the fan cover 72 and the shielding cover 86 are in close contact with each other.

  Here, when the blower cover 72 moves rearward, the movable flap 83 is not pressed by the pressing portion 84. Further, a biasing force is applied to the movable flap 83 by a torsion spring (not shown) in the direction of clockwise rotation from the viewpoint of FIG. 7 (B). Accordingly, the movable flap 83 rotates clockwise, and the opening 76 is in the open state. Therefore, in the state shown in this figure, the opening 76 is in the open state while the rear opening of the fan cover 72 is covered by the shielding cover 86.

  Referring to FIG. 3, when the shielding device 70 is in the semi-shielded state, the rear side opening of the fan cover 72 is closed by the shielding cover 86 as shown in FIG. 7 (B). The blower 27 and the blower 47 are covered by a shielding device 70. Therefore, the freezer compartment supply air passage 31 and the cooling compartment 26 do not communicate with each other. On the other hand, when the movable flap 83 is opened as described above, the opening 76 formed at the upper end of the shielding device 70 is in the open state. Therefore, the cooling chamber 26 and the refrigerator compartment supply air passage 29 communicate with each other via the opening 76.

  Therefore, when the control device makes the shielding device 70 semi-shielded, operates the compressor 44, and rotates the blower 47, cold air passes through the opening 76 of the blower cover 72 and the refrigerating chamber supply air path 29. The air is blown into the refrigerator compartment 15. Also, this cold air may be supplied to the vegetable room 20 via a vegetable room supply air path (not shown). On the other hand, as described above, since the rear opening of the fan cover 72 is closed by the shielding cover 86, cold air is not blown to the freezer compartment 17.

  As described above, the movable flap 83 of the blower cover 72 can be brought into the open state by releasing the pressing by the pressing portion 84. That is, since the movable flap 83 of the fan cover 72 functions like a damper, it is possible to supply cold air only to the refrigerating chamber 15, eliminating the need for an electrically operated damper generally provided in the air supply path. Therefore, the structure required for air path switching can be simplified and the cost can be reduced.

  The configuration for opening and closing the movable flap 83 will be further described with reference to FIG. In the above description, referring to FIG. 6B, for example, the movable flap 83 is opened and closed by pressing the movable flap 83 from the side by the pressing portion 84. Here, opening and closing of the movable flap 83 is controlled by bringing a wall portion 85 which is a part of the heat insulation box 11 around the cold storage room air supply passage 29 into contact with the movable flap 83.

  FIG. 8 (A) is a cross-sectional view showing the shielding device 70 in the fully open state described above, FIG. 8 (B) is a cross-sectional view showing the shielding device 70 in the shielding state, and FIG. FIG. 7 is a cross-sectional view showing a shielding device 70.

  Referring to FIG. 8A, shielding device 70 is disposed below refrigerating room supply air passage 29, and opening 76 of fan cover 72 is disposed immediately below refrigerating room supply air passage 29. ing. Here, the shielding device 70 is fully open, and the fan cover 72 is disposed on the front side. The wall part 85 which is a part of heat insulation box 11 is formed in the both sides in the front-back direction of cold storage room supply air path 29. As shown in FIG. The lower surface of the wall 85 forms a substantially flat surface that slides on the upper surface of the movable flap 83 of the fan cover 72. The movable flap 83 of the fan cover 72 is pressed from above by the wall 85. Such a configuration prevents the movable flap 83 from opening in the fully open state. As described above, in the fully open state, the rear opening of the fan cover 72 is not in contact with the shielding cover 86, so that cold air can flow through the gap between the two, and the freezer compartment air passage 31 shown in FIG. Cold air is supplied. On the other hand, since the movable flap 83 closes the opening 76 of the fan cover 72, cold air is not supplied to the cold storage air supply passage 29.

  Referring to FIG. 8B, when fan cover 72 is moved rearward by rotating drive shaft 71, the opening on the rear side of fan cover 72 is covered with shielding cover 86 first. Therefore, in this shielding state, cold air is not supplied from the space between the fan cover 72 and the shielding cover 86 to the freezer compartment supply air passage 31 shown in FIG. Further, the movable flap 83 of the fan cover 72 is held in a state where it is pressed by the wall 85. Therefore, in this shielding state, cold air is not blown to the refrigerator compartment air passage 29 via the opening 76 of the fan cover 72.

  Referring to FIG. 8C, when fan cover 72 is moved further rearward by further rotating drive shaft 71, the state in which the rear side opening of fan cover 72 is covered with shielding cover 86 is maintained. . Therefore, cold air is not supplied from between the fan cover 72 and the shielding cover 86 even in this semi-shielded state.

  Here, the width in the front-rear direction of the movable flap 83 of the fan cover 72 is narrower than the width in the front-rear direction of the refrigerating chamber supply air passage 29. Therefore, the movable flap 83 is not pressed by the wall portion 85, and the biased movable flap 83 rotates to open upward. Thus, the opening 76 of the fan cover 72 is in the open state. In this semi-shielded state, cold air is blown to the refrigerator compartment supply air passage 29 via the opening 76 of the fan cover 72.

  Further, the fan cover 72 is moved forward as described above by rotating the drive shaft 71 in the direction opposite to the above from the semi-shielded state of FIG. A certain wall portion 85 is brought into contact with the movable flap 83, and the movable flap 83 is closed. Therefore, the shielding state shown in FIG. 8 (B) is obtained. Further, when the fan cover 72 is further moved forward by further rotating the drive shaft 71 in the reverse direction, the fan cover 72 is separated from the shielding cover 86 while the movable flap 83 is closed, as shown in FIG. It will be fully open as shown in.

  As described above, by moving the blower cover 72 so that the movable flap 83 slides relative to the wall 85, the wall 85 which is a part of the heat insulating box 11 can be used as the contact portion. . Therefore, the effect of suppressing an increase in the number of parts can be increased.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 10 refrigerator 11 heat insulation box 12 outer box 13 inner box 14 heat insulating material 15 cold storage room 16 ice making room 17 freezing room 18 upper freezing room 19 lower freezing room 20 vegetable room 21 heat insulation door 22 heat insulation door 23 heat insulation door 24 heat insulation door 25 heat insulation door Reference Signs List 26 cooling room 27 air blowing port 28 return port 29 refrigerating room supply air path 31 freezer room supply air path 33 outlet 34 outlet 37 vegetable room return air path 38 return port 39 return port 42 heat insulation partition wall 43 heat insulation partition wall 44 compressor 45 cooler 46 defrost heater 47 blower 50 fan 65 partition 66 partition 67 front cover 69 shielding device cover 70 shielding device 71 drive shaft 72 blower cover 73 shielding base 74 support 76 opening 77 insertion hole 78 screw hole 79 main Face part 80 Side part 81 Fan support part 82 Fixed flap 83 Movable flap 84 Press part 85 Wall part 86 Shielding cover 100 Refrigerator 1 1 refrigerating compartment 102 freezing compartment 103 vegetable compartment 104 cooling chamber 105 partition wall 106 opening 107 blower fan 108 cooler 109 air passage 110 fan cover 111 recess 113 opening 114 damper

Claims (7)

A cooler of a refrigeration cycle for cooling air supplied to a storage room via a supply air path, a cooling room in which the cooler is disposed to form an air outlet connected to the storage room, the air outlet A blower for blowing the air supplied from the air toward the storage chamber, and a shielding device for at least partially closing the air outlet;
The shielding device has a fan cover that closes the air outlet from the outside of the cooling chamber,
The fan cover has a main surface portion, a side surface portion erected from the peripheral portion of the main surface portion, an opening portion formed by partially opening the side surface portion, and a state capable of opening and closing the opening portion And a movable flap to be closed. The fan cover includes biasing means for biasing the movable flap in the opening direction,
An abutment is formed in the vicinity of the fan cover,
The movable flap is closed by pressing the contact portion,
The refrigerator according to claim 1, wherein when the fan cover is moved, the movable flap is separated from the contact portion and is opened by the biasing force of the biasing unit.   The refrigerator according to claim 2, wherein the biasing means is a spring which contacts the movable flap from the inside.   The refrigerator according to claim 2 or 3, wherein the contact portion is a wall portion forming the supply air path connected to the opening portion of the fan cover.   The refrigerator according to claim 4, wherein a width of the movable flap is shorter than a width of the supply air passage.   The refrigerator according to any one of claims 1 to 5, wherein the movable flap and a fixed flap fixed to the opening are disposed at the opening of the fan cover. . And a shielding cover disposed opposite to the fan cover,
When the fan cover and the shielding cover are separated, the supply air path is fully open,
When the fan cover is covered with the shielding cover and the movable flap is closed, the air supply path is closed.
The fan cover is covered with the shielding cover, and the movable flap is in an open state, thereby providing a semi-shielded state in which the air supply passage is partially blocked. Item 7. The refrigerator according to any one of items 6.

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