JP6973788B2 - refrigerator - Google Patents

Description

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

Conventionally, a refrigerator as described in Patent Document 1 has been known in which a plurality of storage chambers are appropriately cooled by one cooler. FIG. 9 schematically shows the refrigerator 100 described in this document. In the refrigerator 100 shown in FIG. 9, a refrigerating chamber 101, a freezing chamber 102, and a vegetable compartment 103 are formed from above. A cooling chamber 104 in which the cooler 108 is housed is formed on the back side of the freezing chamber 102, and cold air is supplied to each storage chamber on the partition wall 105 that separates the cooling chamber 104 and the freezing chamber 102. The opening 106 for the purpose is formed. Further, a blower fan 107 for blowing cold air is disposed in the opening 106, and a blower cover 110 for covering the blower fan 107 is arranged on the freezing chamber 102 side. A damper 114 is arranged in the middle of the air passage 109 through which the cold air supplied to the refrigerating chamber 101 flows.

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

The refrigerator 100 having the above configuration operates as follows. With reference to FIG. 9, first, when cooling both the refrigerating chamber 101 and the freezing chamber 102, the blower 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, a 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 wind of the blowing fan 107. Further, the other part of the cold air is blown to the refrigerating chamber 101 via the air passage 109, the damper 114, and the air passage 109. As a result, both the freezing chamber 102 and the refrigerating chamber 101 are cooled.

On the other hand, when cooling only the refrigerating chamber 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 blower cover 110 is closed, the opening 113 formed in the upper part of the blower cover 110 communicates with the air passage 109. Therefore, the cold air blown by the blower fan 107 is supplied to the refrigerating chamber 101 via the above-mentioned opening 113, the damper 114, and the air passage 109.

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

Japanese Unexamined Patent Publication No. 2013-2664

In the configuration of the refrigerator 100 described above, the damper 114 interposed in the air passage 109 was an indispensable element for adjusting the cold air supplied to the refrigerating chamber 101. Further, since the opening 113 is formed in the upper part of the blower cover 110, the cooling chamber 104 cannot be shielded only by covering the opening 106 with the blower cover 110. Therefore, in order to prevent the warm air inside the cooling chamber 104 from flowing into the refrigerating chamber 101 in the defrosting process, it is necessary to close the damper 114. That is, the damper 114 was also required for the defrosting process.

However, if the damper 114 is arranged in addition to the blower cover 110 for the purpose of adjusting the amount of blown air, there is a problem that the structure of the entire device 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 capable of easily selecting and closing an air passage with a shielding device.

The refrigerator of the present invention has a cooling cycle cooler for cooling air supplied to the storage chamber via a supply air passage, and cooling in which the cooler is arranged to form an air outlet connected to the storage chamber. A chamber, a blower that blows the air supplied from the air outlet toward the storage chamber, and a shielding device that at least partially closes the air outlet, and the shielding device has the air outlet. It has a blower cover that closes from the outside of the cooling chamber, and the blower cover is formed by partially opening the main surface portion, the side surface portion erected from the peripheral portion of the main surface portion, and the side surface portion. It was closed and the opening, and a movable flap for closing the opening in the open state, the blower cover has a biasing means for biasing in a direction of opening the movable flap, near the fan cover A contact portion is formed in the contact portion, and the movable flap presses the contact portion to close the contact portion. When the blower cover moves, the movable flap separates from the contact portion and the urging force of the urging means. It is characterized by being in an open state.

Further, in the refrigerator of the present invention, the urging means is a spring that comes into contact with the movable flap from the inside.

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

Further, in the refrigerator of the present invention, the width of the movable flap is shorter than the width of the supply air passage.

Further, the refrigerator of the present invention is characterized in that the movable flap and the fixed flap fixed to the opening are arranged in the opening of the blower cover.

Further, the refrigerator of the present invention further includes a shielding cover arranged to face the blower cover, and the blower cover and the shielding cover are separated from each other, so that the supply air passage is fully opened. When the blower cover is covered with the shielding cover and the movable flap is closed, the supply air passage is blocked, the blower cover is covered with the shielding cover, and the blower cover is covered with the shielding cover. When the movable flap is opened, the supply air passage is partially blocked to be in a semi-shielded state.

The refrigerator of the present invention has a cooling cycle cooler for cooling air supplied to the storage chamber via a supply air passage, and cooling in which the cooler is arranged to form an air outlet connected to the storage chamber. A chamber, a blower that blows the air supplied from the air outlet toward the storage chamber, and a shielding device that at least partially closes the air outlet, and the shielding device has the air outlet. It has a blower cover that closes from the outside of the cooling chamber, and the blower cover is formed by partially opening the main surface portion, the side surface portion erected from the peripheral portion of the main surface portion, and the side surface portion. It was closed and the opening, and a movable flap for closing the opening in the open state, the blower cover has a biasing means for biasing in a direction of opening the movable flap, near the fan cover A contact portion is formed in the contact portion, and the movable flap presses the contact portion to close the contact portion. When the blower cover moves, the movable flap separates from the contact portion and the urging force of the urging means. It is characterized by being in an open state. Therefore, since the movable flap that closes the opening of the blower cover can be opened and closed, the internal space of the blower cover and the supply air passage can be blocked by closing the movable flap. Therefore, it is not necessary to dispose a damper in the supply air passage, and the configuration of the entire refrigerator can be simplified.

Further, in the refrigerator of the present invention, the urging means is a spring that comes into contact with the movable flap from the inside. Therefore, the movable flap can be urged outward with a simple configuration.

Further, in the refrigerator of the present invention, the contact portion is a wall portion forming the supply air passage connected to the opening of the blower cover. Therefore, since the wall portion forming the supply air passage, which is a part of the main body of the refrigerator, can be used as the contact portion, the configuration controlling the opening and closing of the movable flap can be simplified.

Further, in the refrigerator of the present invention, the width of the movable flap is shorter than the width of the supply air passage. Therefore, the movable flap can be opened and closed inside the supply air passage.

Further, the refrigerator of the present invention is characterized in that the movable flap and the fixed flap fixed to the opening are arranged in the opening of the blower cover. Therefore, it is possible to change the width of the movable flap according to the width of the supply air passage.

Further, the refrigerator of the present invention further includes a shielding cover arranged to face the blower cover, and the blower cover and the shielding cover are separated from each other, so that the supply air passage is fully opened. When the blower cover is covered with the shielding cover and the movable flap is closed, the supply air passage is blocked, the blower cover is covered with the shielding cover, and the blower cover is covered with the shielding cover. When the movable flap is opened, the supply air passage is partially blocked to be in a semi-shielded state. Therefore, by appropriately covering the blower cover with the shielding cover and opening and closing the movable flap, it is possible to easily realize a shielding state in which the supply air passage is almost completely blocked and a semi-shielding state in which the supply air passage is partially blocked. be able to.

It is a front view which shows the appearance of the refrigerator which concerns on embodiment of this invention. It is a side sectional view which shows the internal structure of the refrigerator which concerns on embodiment of this invention. It is an enlarged side sectional view which shows the structure near the cooling chamber of the refrigerator which concerns on embodiment of this invention. It is an exploded perspective view which shows the shielding device adopted in the refrigerator which concerns on embodiment of this invention. A refrigerator according to an embodiment of the present invention is shown, (A) is a perspective view showing a shielding device in a fully open state, and (B) is a cross-sectional view of the shielding device in that state. A refrigerator according to an embodiment of the present invention is shown, (A) is a perspective view showing a shielding device in a shielding state, and (B) is a cross-sectional view of the shielding device in that state. A refrigerator according to an embodiment of the present invention is shown, (A) is a perspective view showing a shielding device in a semi-shielding state, and (B) is a cross-sectional view of the shielding device in that state. A refrigerator according to an embodiment of the present invention is shown, (A) is a cross-sectional view showing a shielding device in a fully open state, (B) is a sectional view showing a shielding device in a shielding state, and (C) is a half. It is sectional drawing which shows the shielding device in the shielding state. It is an enlarged side view which shows the refrigerator which concerns on the background technology. It is a perspective view which shows the blower cover adopted in the refrigerator which concerns on the background technology.

Hereinafter, the refrigerator 10 according to the embodiment of the present invention will be described in detail with reference to the drawings. In the following description, the same members are designated by the same reference numerals in principle, and the repeated description will be omitted. Further, in the following description, each direction of up, down, front, back, left and right is appropriately used, and the left and right indicate the left and right when the refrigerator 10 is viewed from the front.

FIG. 1 is a front external view showing a schematic structure of the refrigerator 10 of the present embodiment. As shown in FIG. 1, the refrigerator 10 includes a heat insulating box 11 as a main body, and a storage chamber for storing food and the like is formed inside the heat insulating box 11. The uppermost storage room is the refrigerating room 15, the lower left side is the ice making room 16, the right side is the upper freezing room 18, the lower part is the lower freezing room 19, and the lowermost part is the vegetable room 20. The ice making chamber 16, the upper freezing chamber 18, and the lower freezing chamber 19 are all storage chambers in the freezing temperature range, and these may be collectively referred to as the freezing chamber 17 in the following description.

The front surface of the heat insulating box 11 is open, and the heat insulating door 21 and the like are provided in the openings corresponding to the respective storage chambers so as to be openable and closable. The heat insulating door 21 divides the front surface of the refrigerating chamber 15 in the left-right direction and closes the heat insulating door 21, and the outer upper and lower end portions of the heat insulating door 21 in the width direction are rotatably attached to the heat insulating box body 11. Further, the heat insulating doors 22, 23, 24, and 25 are integrally combined with the storage container, and are supported by the heat insulating box 11 so as to be freely pulled out in 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 insulating box 11 which is the main body of the refrigerator 10 is arranged with a steel plate outer box 12 having an open front surface and a gap in the outer box 12, and the front surface is opened. It is composed of an inner box 13 made of synthetic resin. A heat insulating material 14 made of foamed polyurethane is filled and foamed in the gap between the outer box 12 and the inner box 13. The heat insulating doors 21 to 25 described above also adopt the same heat insulating structure as the heat insulating box 11.

The refrigerating chamber 15 and the freezing chamber 17 located below the refrigerating chamber 15 are partitioned by a heat insulating partition wall 42. The ice making chamber 16 inside the freezing chamber 17 and the upper freezing chamber 18 are partitioned by a partition wall (not shown here). Further, cold air, which is cooled air, is freely communicated between the ice making chamber 16 and the upper freezing chamber 18 and the lower freezing chamber 19 provided below the ice making chamber 16. The freezing chamber 17 and the vegetable compartment 20 are separated by a heat insulating partition wall 43.

On the back surface of the refrigerating chamber 15, a partition body 65 made of synthetic resin is partitioned, and a refrigerating chamber supply air passage 29 as a supply air passage for supplying cold air to the refrigerating chamber 15 is formed. The air outlet 33 for flowing cold air to the refrigerating chamber 15 is formed in the refrigerating chamber supply air passage 29.

A freezing chamber supply air passage 31 is formed on the back side of the freezing chamber 17 to allow the cold air cooled by the cooler 45 to flow to the freezing chamber 17. A cooling chamber 26 is formed further behind the freezing chamber supply air passage 31, and a cooler 45, which is an evaporator for cooling the air circulating in the refrigerator, is arranged inside the cooling chamber 26. ..

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

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

The freezing chamber supply air passage 31 formed in front of the cooling chamber 26 is a space formed between the cooling chamber 26 and the synthetic resin front cover 67 assembled in front of the cooling chamber 26, and is cooled by the cooler 45. It becomes an air passage through which cold air flows. 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 back surface of the lower freezing chamber 19. Below the cooling chamber 26, a return port 28 is formed which is connected to the return port 38 and sucks the return cold air from each storage chamber into the inside of the cooling chamber 26. Cold air returning via the return port 39 (FIG. 2) of the vegetable compartment 20 and the vegetable compartment return air passage 37 also flows into the return port 28.

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.

An air outlet 27, which is an opening connected to each storage chamber, is formed in the upper part of the cooling chamber 26. The air outlet 27 is an opening through which the cold air cooled by the cooler 45 flows, and communicates the cooling chamber 26 with the refrigerating chamber supply air passage 29 and the freezing chamber supply air passage 31. The blower port 27 is provided with a blower 47 that blows cold air toward the freezing chamber 17 and the like. The configuration of the blower 47 will be described later. Further, a damper is not interposed in the refrigerating chamber supply air passage 29, and the function of the damper is carried out by the movable flap 83 of the shielding device 70 described later.

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

The surface of the blower cover 72 facing the cooling chamber 26 is formed in a concave shape. As a result, the blower cover 72 can close the blower port 27 without coming into contact with the blower 47. Further, the shielding device 70 is covered with the shielding device cover 69 from the front.

With reference to FIG. 4, the configuration of the shielding device 70 adopted in the above-mentioned refrigerator 10 will be described. FIG. 4 is a perspective view showing each member constituting the shielding device 70 in the front-rear direction.

The shielding device 70 has a blower cover 72 that covers the blower 47, and a shielding base 73 that attaches the blower cover 72 to the main body of the refrigerator 10. The main function of the cloaking device 70 is to appropriately put the above-mentioned blower 47 and the blower port 27 into a non-closed state or a closed state, so that the cold air blown by the rotation of the blower 47 is supplied to a desired storage chamber. It is in. Further, by closing the shielding device 70, it is possible to prevent the warm air generated in the defrosting process of the cooler 45 from flowing into the freezing chamber 17 or the like. Here, the warm air is the air heated by the defrost heater 46.

The blower cover 72 is formed by injection molding a synthetic resin material into a substantially lid shape, and has a main surface portion 79 having a substantially square shape when viewed from the front and a side surface portion 80 extending rearward from the peripheral edge portion of the main surface portion 79. have. A screw hole 78 is formed by circularly penetrating the vicinity of 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. The opening 76 is formed by opening the upper side surface portion 80 of the blower cover 72. The opening 76 has a rectangular shape formed elongated on the left and right sides when viewed from above. Since the opening 76 is formed, even when the shielding device 70 is closed, the cooling chamber 26 and the above-mentioned refrigerating chamber supply air passage 29 can communicate with each other via the opening 76.

The insertion hole 77 is formed by opening the vicinity of the peripheral portion of the main surface portion 79 of the blower cover 72 in a circular shape. As will be described later, the insertion hole 77 is penetrated by the support portion 74 of the shielding base 73. As described above, the role of the blower cover 72 is to substantially close the blower 47 arranged at the blower port 27 of the cooling chamber 26. A fixed flap 82 and a movable flap 83 are attached to the opening 76 of the blower 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) having a part of its side surface continuously projected in a spiral shape. 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 blower cover 72 are screwed under the usage 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 blower cover 72. A stepping motor (not shown) is built in the drive shaft 71, and the drive shaft 71 rotates by a predetermined angle by the drive force of the motor. When the drive shaft 71 rotates clockwise, for example, when viewed from the front, the blower cover 72 separates from the shielding base 73, and the blower cover 72 closes the blower port 27 shown in FIG. 2 to close the drive shaft 71. Therefore, the cold air blown by the blower 47 is not supplied to the freezing chamber 17. On the other hand, when the drive shaft 71 rotates counterclockwise when viewed from the front, for example, the blower cover 72 moves toward the shielding base 73 side, and the blower port 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 freezing chamber 17 via this gap.

The shielding base 73 is a member made of a synthetic resin having a shape similar to that of the blower cover 72 described above. Inside the shielding base 73, a space is formed in which the blower cover 72 can be stored. The shielding base 73 is formed with a support portion 74 that projects rearward in a columnar shape. Here, three support portions 74 are formed around the drive shaft 71. The support portion 74 penetrates the insertion hole 77 of the blower cover 72 described above. The shielding base 73 is arranged between the rear side surface of the freezing chamber 17 and the partition body 66 with reference to FIG. 2, and is fixed to the front cover 67.

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

The above-mentioned shielding device 70 can take a fully open state, a shielding state, and a semi-shielding state, which will be described later.

The configuration of the shielding device 70 in each of the above-mentioned states will be described with reference to FIGS. 5 to 7. FIG. 5 shows a cloaking device 70 in a fully open state, FIG. 6 shows a cloaking device 70 in a cloaking state, and FIG. 7 shows a cloaking device 70 in a semi-shielding state. In FIG. 6, by setting the blower cover 72 in a half-open state, a shielding state in which the air passage is blocked by the shielding device 70 is realized. In FIG. 7, the blower cover 72 is fully closed to realize a semi-shielding 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. 5 (A) is a perspective view showing a shielding device 70 in a fully open state, and FIG. 5 (B) is a cross-sectional view taken along the line BB of FIG. 5 (A). Here, when the shielding device 70 is fully opened, the shielding device 70 does not close the air outlet 27 (FIG. 3) of the cooling chamber 26, and cold air is supplied to the freezing chamber 17 as described below.

With reference to FIG. 5A, the opening 76 is formed by opening the upper end portion of the blower cover 72 in a rectangular shape. The opening 76 is a portion in which the side surface portion 80 of the blower 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 flap 82 and the movable flap 83 are made of a synthetic resin plate material, similarly to the blower cover 72. The fixed flap 82 is fixed to the blower cover 72 and does not open / close. On the other hand, the movable flap 83 is rotatably attached to the blower cover 72. Here, it is also possible to cover the opening 76 only with 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 of the movable flap 83 in the front-rear direction is narrower than the width of the side surface portion 80 of the blower cover 72. .. By doing so, as will be described later, the width of the movable flap 83 can be adjusted according to the width of the supply air passage connected to the opening 76.

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

With reference to FIG. 5B, a substantially lid-shaped shielding cover 86 that meshes with the blower cover 72 is arranged on the rear side of the blower 47. When the shielding cover 86 comes into surface contact with the side surface portion 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 blower 47 described above flows into the inside of the blower cover 72 via this opening.

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

Here, the pressing portion 84 is shown as a contact portion that regulates the opening operation of the movable flap 83, but as will be described later, it is movable by abutting a wall-shaped member forming an air passage on the movable flap 83. It is also possible to regulate the opening operation of the flap 83. 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. 5B, when the shielding device 70 is in the fully open state, the blower cover 72 and the shielding cover 86 are separated from each other, and a gap exists between them. Cold air is supplied to each storage chamber through this gap. Specifically, the cold air is supplied to the freezing chamber 17 via the freezing chamber supply air passage 31. Here, as shown in FIG. 5A, the movable flap 83 of the blower cover 72 is pressed by the pressing portion 84 from the outside, so that it is kept in a closed state. Therefore, referring to FIG. 3, the cold air is not blown to the refrigerating room supply air passage 29 side.

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

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

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

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

The configuration of the shielding device 70 in the semi-shielding state will be described with reference to FIG. 7. Here, by making the blower cover 72 fully closed, a semi-shielded state is realized in which the movable flap 83 is opened while the blower cover 72 closes the air passage.

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

With reference to FIGS. 7 (A) and 7 (B), when the drive shaft 71 is further rotated in a predetermined direction, the blower 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 opening of the blower cover 72 is closed by the shielding cover 86. That is, as in the case of FIG. 6, the side surface portions of the blower cover 72 and the shielding cover 86 are in close contact with each other.

Here, as the blower cover 72 moves rearward, the movable flap 83 is not pressed by the pressing portion 84. Further, the movable flap 83 is subjected to an urging force in the direction of clockwise rotation from the viewpoint of FIG. 7B by a torsion spring (not shown here). Therefore, the movable flap 83 rotates clockwise, and the opening 76 is opened. Therefore, in the state shown in this figure, the rear opening of the blower cover 72 is covered with the shielding cover 86, and the opening 76 is in the open state.

With reference to FIG. 3, when the shielding device 70 is in the semi-shielding state, as shown in FIG. 7B, the rear opening of the blower cover 72 is closed by the shielding cover 86, so that the cooling chamber 26 is closed. The blower port 27 and the blower 47 are covered with the shielding device 70. Therefore, the freezing chamber supply air passage 31 and the cooling chamber 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 an open state. Therefore, the cooling chamber 26 and the refrigerating chamber supply air passage 29 communicate with each other via the opening 76.

Therefore, when the control device puts the shielding device 70 in a semi-shielding state, operates the compressor 44, and rotates the blower 47, the cold air passes through the opening 76 of the blower cover 72 and the refrigerating chamber supply air passage 29. It is blown to the refrigerator compartment 15. Further, this cold air may be supplied to the vegetable compartment 20 via a vegetable compartment supply air passage (not shown). On the other hand, as described above, since the rear opening of the blower cover 72 is closed by the shielding cover 86, the cold air is not blown to the freezing chamber 17.

As described above, the movable flap 83 of the blower cover 72 can be opened by releasing the pressing by the pressing portion 84. That is, since the movable flap 83 of the blower cover 72 functions like a damper, it is possible to supply cold air only to the refrigerating chamber 15 without the need for an electric damper generally interposed in the supply air passage. Therefore, the configuration required for switching the air passage can be simplified and the cost can be reduced.

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

8 (A) is a cross-sectional view showing the above-mentioned shielding device 70 in the fully open state, FIG. 8 (B) is a cross-sectional view showing the shielding device 70 in the shielding state, and FIG. 8 (C) is a semi-shielding state. It is sectional drawing which shows the shielding device 70.

With reference to FIG. 8A, the shielding device 70 is arranged below the refrigerating chamber supply air passage 29, and the opening 76 of the blower cover 72 is arranged directly under the refrigerating chamber supply air passage 29. ing. Here, the shielding device 70 is in the fully open state, and the blower cover 72 is arranged on the front side. Wall portions 85, which are a part of the heat insulating box body 11, are formed on both sides of the refrigerating chamber supply air passage 29 in the front-rear direction. The lower surface of the wall portion 85 forms a substantially flat surface that slides on the upper surface of the movable flap 83 of the blower cover 72. The movable flap 83 of the blower cover 72 is pressed from above by the wall portion 85. This configuration prevents the movable flap 83 from opening in the fully open state. As described above, in this fully open state, the rear opening of the blower 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 freezing chamber supply air passage 31 shown in FIG. 3 can be used. Cold air is supplied. On the other hand, since the movable flap 83 closes the opening 76 of the blower cover 72, cold air is not supplied to the refrigerating chamber supply air passage 29.

When the blower cover 72 is moved rearward by rotating the drive shaft 71 with reference to FIG. 8B, first, the rear opening of the blower cover 72 is covered with the shielding cover 86. Therefore, in this shielded state, cold air is not supplied from between the blower cover 72 and the shield cover 86 to the freezing chamber supply air passage 31 shown in FIG. Further, the movable flap 83 of the blower cover 72 is held in a state of being pressed by the wall portion 85. Therefore, in this shielded state, cold air is not blown to the refrigerating chamber supply air passage 29 via the opening 76 of the blower cover 72.

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

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

Further, from the semi-shielded state of FIG. 8C, by rotating the drive shaft 71 in the direction opposite to the above, the blower cover 72 is moved forward as described above, and a part of the heat insulating box 11 is used. 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. 8B is obtained. Further, when the blower cover 72 is further moved forward by further rotating the drive shaft 71 in the opposite direction, the blower cover 72 is separated from the shielding cover 86 while the movable flap 83 is closed, and FIG. 8A is shown. It becomes the fully open state shown in.

As described above, by moving the blower cover 72 so that the movable flap 83 slides with respect to the wall portion 85, the wall portion 85, which is a part of the heat insulating box body 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 gist of the present invention.

10 Refrigerator 11 Insulation box body 12 Outer box 13 Inner box 14 Insulation material 15 Refrigerator room 16 Ice making room 17 Freezer room 18 Upper freezer room 19 Lower freezer room 20 Vegetable room 21 Insulation door 22 Insulation door 23 Insulation door 24 Insulation door 25 Insulation door 25 26 Cooling room 27 Air outlet 28 Return port 29 Refrigerator room supply air passage 31 Refrigerator room supply air passage 33 Air outlet 34 Air outlet 37 Vegetable room Return air passage 38 Return port 39 Return port 42 Insulation partition wall 43 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 part 76 Opening 77 Insertion hole 78 Screw hole 79 Main Face 80 Side 81 Fan support 82 Fixed flap 83 Movable flap 84 Pressing 85 Wall 86 Shielding cover 100 Refrigerator 101 Refrigerator room 102 Refrigerator room 103 Vegetable room 104 Cooling room 105 Section wall 106 Opening 107 Blower fan 108 Cooler 109 Air passage 110 Blower cover 111 Recess 113 Recession 114 Opening 114 Damper

Claims (6)

A cooling cycle cooler that cools the air supplied to the storage chamber via the supply air passage, a cooling chamber in which the cooler is arranged and an air outlet connected to the storage chamber is formed, and the air outlet. A blower that blows the air supplied from the air toward the storage chamber and a shielding device that at least partially closes the air outlet.
The shielding device has a blower cover that closes the blower port from the outside of the cooling chamber.
The blower cover has a main surface portion, a side surface portion erected from the peripheral portion of the main surface portion, an opening formed by partially opening the side surface portion, and a state in which the opening can be opened and closed. possess a movable flap, the to close in,
The blower cover has an urging means for urging the movable flap in the opening direction.
A contact portion is formed in the vicinity of the blower cover, and a contact portion is formed.
When the movable flap presses the contact portion, it is closed.
A refrigerator characterized in that when the blower cover is moved, the movable flap is separated from the contact portion and is opened by the urging force of the urging means. It said biasing means, a refrigerator according to claim 1, characterized in that the spring contact from the inside to the movable flap. The refrigerator according to claim 1 or 2, wherein the contact portion is a wall portion forming the supply air passage connected to the opening of the blower cover. The refrigerator according to claim 3 , wherein the width of the movable flap is shorter than the width of the supply air passage. The refrigerator according to any one of claims 1 to 4 , wherein the movable flap and the fixed flap fixed to the opening are arranged in the opening of the blower cover. .. Further provided with a shielding cover arranged to face the blower cover,
When the blower cover and the shielding cover are separated from each other, the supply air passage is fully opened.
When the blower cover is covered with the shielding cover and the movable flap is closed, the supply air passage is blocked.
The first aspect of the present invention is characterized in that the blower cover is covered with the shielding cover and the movable flap is opened, so that the supply air passage is partially blocked to be in a semi-shielding state. Item 5. The refrigerator according to any one of Items 5.

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