JP2020063872A - Freezer and refrigerator - Google Patents

Abstract

To provide a freezer having excellent cooling efficiency and a refrigerator provided with such a freezer.SOLUTION: A freezer has an antifreeze fluid container in which antifreeze fluid is contained. The antifreeze fluid container has a contact part which comes into contact with a stored object. The stored object is freezed by the contact part coming into contact with the stored object. The antifreeze fluid is agitated from the exterior of the antifreeze fluid container.SELECTED DRAWING: Figure 6

Description

  Embodiments of the present invention relate to a freezing device and a refrigerator.

  BACKGROUND ART Conventionally, a freezing device that rapidly freezes stored items with an antifreeze liquid that has fluidity even at low temperatures, and a refrigerator in which such a freezing device is arranged in a freezing chamber have been known. As a freezing device, for example, as described in Patent Document 1, a freezing device having a configuration in which a stored item is sandwiched between two bags containing antifreeze liquid or between a bag containing antifreeze liquid and a metal plate is known. Was there.

JP, 2005-192533, A

  However, in the above-mentioned device, heat exchange tends to be performed not between the entire antifreeze solution in the bag but only between the antifreeze solution in the bag near the storage item and the storage item. Therefore, the efficiency of cooling the stored items by the antifreeze liquid was not good.

  Therefore, an object of the present invention is to provide a freezing device having a good cooling efficiency and a refrigerator provided with such a freezing device.

  The freezing device of the embodiment has an antifreeze container containing an antifreeze liquid, and the antifreeze container has a contact portion that comes into contact with a stored item, and the contact portion contacts the stored item to freeze the stored item. In the freezing device, the antifreeze liquid is agitated from the outside of the antifreeze liquid container.

The longitudinal cross-sectional view of the refrigerator of embodiment. The front view of the refrigerator of an embodiment. The block diagram of the refrigerator of embodiment. The perspective view of the freezing device of Embodiment 1. The figure when a lid is closed and a motor storage part is connected with a gear storage part. The perspective view of the freezing device of Embodiment 1. The figure when a lid is opened and a motor storage part is separated from a gear storage part. 3 is a cross-sectional view of the freezing device according to the first embodiment in the front-back direction. The top view of the freezing apparatus of Embodiment 1. FIG. 3 is a cross-sectional view of the height adjusting unit of the freezing device according to the first embodiment in the left-right direction. The figure which looked at the inside of the motor storage part of the freezing device of Embodiment 1 from the back. Gear teeth are omitted in the drawing. The figure which looked at the inside of the gear storage part of the freezing device of Embodiment 1 from the back. Gear teeth are omitted in the drawing. FIG. 8 is a plan view of a rotating rod according to a modified example 4 of the first embodiment. Sectional drawing of the freezing apparatus of the modification 6 of Embodiment 1 of the front-back direction. FIG. 8 is a vertical cross-sectional view of a freezing device according to a modified example 9 of the first embodiment. The figure when a liquid freezing chamber is closed and a handle part is pushed in. FIG. 8 is a vertical cross-sectional view of a freezing device according to a modified example 9 of the first embodiment. The figure when a liquid freezing chamber is closed and a handle part is pulled up. FIG. 8 is a vertical cross-sectional view of a freezing device according to a modified example 9 of the first embodiment. The figure when a liquid freezing chamber is opened. FIG. 6 is a perspective view of the pull-out container and the freezing device according to the second embodiment. The top view of the drawer type container and freezing device of Embodiment 2. Sectional drawing of the freezing device of Embodiment 2 in the left-right direction. The figure when a storage bag is in an open state. Sectional drawing of the freezing device of Embodiment 2 in the left-right direction. The figure when the storage bag is closed. The front view of the impeller in the freezing apparatus of Embodiment 2. FIG. 3 is a horizontal cross-sectional view of the vicinity of the rotating body storage portion of the first embodiment.

  The refrigerator of the embodiment will be described with reference to the drawings. In addition, the following embodiments are exemplifications, and the scope of the invention is not limited thereto. Various omissions, substitutions, and changes can be made to the following embodiments without departing from the spirit of the invention. The following embodiments and modifications thereof are included in the invention described in the claims and its equivalent scope.

  In the following description, the opening direction of the refrigerator door is the front direction, and the opposite direction, that is, the door closing direction is the rear direction. Also, the left and right when the user of the refrigerator stands in front of the refrigerator (in front of the door) and looks at the refrigerator is referred to as left and right in the following description.

1. Embodiment 1
(1) Overall Structure of Refrigerator FIGS. 1 and 2 show a refrigerator 10 according to an embodiment. The main body 12 of the refrigerator 10 is configured by combining an outer box forming an outer shell of the refrigerator 10 and an inner box having a storage chamber, and filling a heat insulating material between the outer box and the inner box. .

  The main body 12 is vertically divided by an upper and lower partition wall 14. The upper part of the upper and lower partition walls 14 is a refrigerating space that is maintained at a refrigerating temperature (a temperature for refrigerating stored items, for example, 1 to 4 ° C.). The lower part of the upper and lower partition walls 14 is a freezing space maintained at a freezing temperature (a temperature for freezing and storing stored items, for example, −22 to −18 ° C.). The refrigerating space and the freezing space are spaces for accommodating items such as food and beverages.

  The refrigerating space is provided with a refrigerating chamber 20 and a vegetable chamber 22 as storage chambers in order from the top. The refrigerating room 20 is provided with a plurality of placing shelves and a chilled room 24. Further, the vegetable compartment 22 accommodates a pull-out type vegetable container. The refrigerating compartment 20 is opened and closed by a pair of left and right refrigerating compartment doors 21 of a kannon type. The vegetable compartment 22 is opened / closed by a drawer-type vegetable compartment door 23.

  An ice making room serving as a storage room and an upper freezing room 26 adjacent to the ice making room are provided above the freezing space. Further, a lower freezing chamber 28 as a storage chamber is provided below the freezing space. Each of the ice making chamber and the upper freezing chamber 26 contains a drawer type container. Further, the pull-out container 18 is also housed in a part of the lower freezer compartment 28 (for example, the left side, that is, the back side in FIG. 1). A freezing device 40, which will be described later, is arranged inside the lower freezing chamber 28 (for example, inside the pull-out container 18).

  The freezing device 40 may be arranged in another place in the freezing space (for example, inside the upper freezing chamber 26). A new freezing room (not shown) may be formed in a part of the freezing space (for example, above the upper freezing room 26), and the freezing device 40 may be housed inside the freezing room. Further, the freezing device 40 may be arranged in the refrigerating space. For example, the freezing device 40 may be arranged on the placing shelf of the refrigerating compartment 20, inside the chilled compartment 24 or inside the vegetable compartment 22. Hereinafter, as an example, the freezing device 40 will be described as being stored inside the lower freezing chamber 28.

  As shown in FIGS. 1 and 2, the ice making chamber is opened and closed by a drawer type ice making chamber door 25, the upper freezing chamber 26 is opened and closed by a drawer type upper freezing chamber door 27, and the lower freezing chamber 28 is a drawer type lower. It is opened and closed by the freezer compartment door 29.

  Behind the refrigerating space, there are provided a first cooler 30, a first blower 31 arranged near the first cooler 30, and a duct 32 extending upward from the first cooler 30. There is. An outlet 33 for cool air is formed on the wall that separates the refrigerating space and the duct 32. Further, a suction port 34 for cold air leading to the first cooler 30 is formed on the rear wall of the refrigerating space. As the cool air is generated in the first cooler 30 and the first air blower 31 is operated, the cool air is blown out from the air outlet 33 to the refrigerating space through the duct 32 and circulates in the refrigerating space. The cold air circulated in the refrigerating space is sucked toward the first cooler 30 from the suction port 34. By thus circulating the cool air, the refrigerating space is cooled to the refrigerating temperature.

  Further, behind the freezing space, a second cooler 35 and a second air blower 36 arranged near the second cooler 35 are provided. Further, an outlet 37 and an inlet 38 for cold air leading to the second cooler 35 are formed on the rear wall of the freezing space. As the cool air is generated in the second cooler 35 and the second air blower 36 is operated, the cool air is blown from the outlet 37 to the freezing space and circulates in the freezing space. The cold air circulating in the freezing space is sucked toward the second cooler 35 from the suction port 38. By thus circulating the cool air, the freezing space is cooled to the freezing temperature.

  A machine room 16 is provided in the lower rear part of the main body 12. In the machine room 16, a compressor 17 that compresses the refrigerant flowing to the first cooler 30 and the second cooler 35, a condenser (not shown) that constitutes a refrigeration cycle together with the compressor 17 and the like are arranged.

  Further, the refrigerator 10 is provided with a control device 11. As shown in FIG. 3, the control device 11 is electrically connected to the compressor 17, the first blower 31, the second blower 36, and other devices for controlling the temperature of the storage chamber. The control device 11 controls these connected devices and the like.

(2) Structure of Freezing Device FIG. 4 shows the freezing device 40 stored in the upper freezing chamber 26. The freezing device 40 is a device that uses an antifreeze liquid 42 to rapidly cool and freeze the stored items 44. Here, the antifreeze liquid 42 is a liquid that maintains fluidity without freezing even at a freezing temperature. Examples of the storage items 44 include foods such as vegetables, fruits, meats, seafood, and processed foods.

  As shown in FIGS. 4 and 5, the freezing device 40 has a storage container 50 in which the storage items 44 are stored. The storage container 50 is separable into an upper lid 51 and a lower container body 52. As shown in FIGS. 5 and 6, the container body 52 has a bottom plate 52a and front, rear, left and right side walls 52b, and is open upward. The lid 51 has an upper plate 51a and front, rear, left and right side walls 51b, and is opened downward. Then, the lid 51 is put over the container body 52 to close the opening of the container body 52. When the opening of the container body 52 is closed by the lid 51, the side wall 52b of the container body 52 is inside and the side wall 51b of the lid 51 is outside.

  As shown in FIG. 6, a flat cool storage agent 55 is arranged on the bottom plate 52a of the container body 52. The cold storage agent 55 is, for example, a drug (for example, a drug containing water and a polymer) filled in a flat container and frozen, and cools surroundings by latent heat generated when the drug melts.

  A metal plate 56 is placed on the cool storage agent 55. The metal plate 56 is preferably made of aluminum or a metal having a higher thermal conductivity than aluminum (for example, copper). The storage item 44 is arranged on the metal plate 56. Although the metal plate 56 is depicted as a single plate-shaped object in FIG. 6 and the like, it may be a plate-shaped object in which the side wall rises from the plate-shaped side portion.

  Further, an antifreeze bag 46, which is a kind of antifreeze container, can be placed on the metal plate 56. The antifreeze solution bag 46 has a bag shape and the antifreeze solution 42 is contained therein. When the storage item 44 is arranged on the metal plate 56 and the antifreeze bag 46 is placed thereon, the storage item 44 is sandwiched between the metal plate 56 and the antifreezing liquid bag 46. The entire surface of the antifreeze bag 46 is a contact portion that can come into contact with the stored item 44. The shape of the antifreeze bag 46 is not limited, but in the present embodiment, it is long in the front-rear direction as shown in FIG. 7.

  The antifreeze bag 46 is made of a stretchable thin film that does not allow the antifreeze liquid 42 to pass therethrough. Further, the antifreeze bag 46 is preferably made of a stretchable thin film having high stretchability, high recoverability, high durability and high strength. Specifically, the antifreeze bag 46 is stretchable and deformable so as to substantially conform to the outer shape of the stored item 44 when placed on the stored item 44, and the original property when separated from the stored item 44. It is preferable to have recoverability capable of returning to the shape, and durability and strength that will not break when pressed against the stored item 44 or pressed by the rotating rod 58 as described later. The stretchable thin film that constitutes the antifreeze bag 46 is preferably one that can realize the above-mentioned properties of the antifreeze bag 46. Examples of the material of such a stretchable thin film include EVA (ethylene-vinyl acetate copolymer resin), polyisoprene rubber or nylon.

  The antifreeze liquid 42 inside the antifreeze liquid bag 46 is preferably a highly viscous liquid, that is, a highly viscous liquid. The viscosity of the high-viscosity liquid used as the antifreeze liquid 42 at room temperature (20 ° C.) is preferably 2000 cP (2 Pa · s) or more and 200,000 cP (200 Pa · s) or less, and 4000 cP (4 Pa · s) or more and 50000 cP (50 Pa · s) The following is more preferable. Further, the antifreeze liquid 42 is preferably a harmless substance that can be taken by the human mouth. Examples of harmless substances that can be used as the antifreeze liquid 42 include ethanol-based food additives added, propylene glycol-based food additives added, aqueous sodium chloride solution, and vegetable oil. Further, the antifreeze liquid 42 is preferably colored. When the antifreeze liquid 42 is colored, the color of the antifreeze liquid 42 is preferably different from the color of the antifreeze liquid bag 46.

  The antifreeze liquid 42 preferably has two or more properties of high viscosity, harmless substance, and colored one, and more preferably all three properties.

  As shown in FIGS. 6 and 7, a rotating rod 58 is provided inside the lid 51 as a stirring means for the antifreeze liquid 42. The rotary rod 58 is bridged over the front and rear side walls 51b of the lid 51 and extends in the front-rear direction. Therefore, the rotary rod 58 extends in the longitudinal direction of the antifreeze bag 46. As a preferred form, the extension direction of the rotary rod 58 coincides with the longitudinal direction of the antifreeze bag 46. However, the extending direction of the rotating rod 58 and the longitudinal direction of the antifreezing liquid bag 46 do not have to match, and for example, the extending direction of the rotating rod 58 and the longitudinal direction of the antifreezing liquid bag 46 may be slightly displaced. Although only one rotary rod 58 may be provided, it is preferable that two rotary rods 58 are provided side by side as shown in FIG. 7, or three or more rotary rods may be provided.

  A convex portion 59 is formed on each rotary rod 58. The convex portion 59 extends spirally in the longitudinal direction of the rotary rod 58. Further, the convex portion 59 extends continuously in the longitudinal direction of the rotary rod 58 without interruption. The top of the protrusion in the protrusion 59 is rounded and has no corner.

  When the opening of the container main body 52 is closed by the lid 51, the convex portion 59 of the rotating rod 58 hits the antifreeze liquid bag 46 placed on the stored item 44. It is preferable that the height of the lid 51 with respect to the container body 52 can be adjusted in order to adjust the contact between the antifreeze bag 46 and the convex portion 59 of the rotating rod 58, and the height adjusting portion for that purpose is formed in the storage container 50. .

  As shown in FIGS. 4, 5 and 8, as one of the height adjusting parts, a plurality of outward facing claw parts 52c are formed in the vertical direction on the outer surfaces of the left and right side walls 52b of the container body 52, respectively. There is. Further, as the other of the height adjusting portions, part of the left and right side walls 51b of the lid 51 is formed as elastically deformable claw members 51d, and one inward claw portion 51c is provided inside the tip of each claw member 51d. Has been formed. When the opening of the container body 52 is closed by the lid 51, the location of the inward claws 51c faces the location where the plurality of outward claws 52c are formed. Due to such a structure, as shown in FIG. 8, by adjusting the height of the lid 51 with respect to the container body 52 by hooking the inward claw portion 51c on an appropriate one of the plurality of outward claw portions 52c. You can

  The lid 51 and the container body 52 may be respectively surrounded from outside by a heat insulating wall (not shown). The heat insulating wall is, for example, a molded product of expanded polystyrene or urethane foam.

  As shown in FIGS. 4 to 7, a gear storage portion 60 is fixed to the rear portion of the lid 51. Further, a motor storage portion 61 is detachably provided at the rear of the gear storage portion 60. A motor 62 (see FIG. 9) for rotating the rotary rod 58 is stored in the motor storage portion 61, and a gear that transmits power from the motor 62 to the rotary rod 58 is stored in the gear storage portion 60.

  As shown in FIG. 9, the motor housing 61 includes a motor 62, a first gear 64 fixed to the shaft of the motor 62, a second gear 65 meshing with the first gear 64, and a second gear 65. A third gear 66 that meshes with it is stored. Due to such a structure, when the shaft of the motor 62 rotates, the third gear 66 rotates. The third gear 66 is formed with a first coupling portion 66a (see FIGS. 5 and 6) protruding forward.

  As shown in FIG. 10, the gear storage unit 60 stores a fourth gear 67, a fifth gear 68 that meshes with the fourth gear 67, and a sixth gear 69 that meshes with the fifth gear 68. The fourth gear 67 and the sixth gear 69 are arranged on both left and right sides of the fifth gear 68, and when the fourth gear 67 rotates, the sixth gear 69 also rotates in the same direction. As shown in FIG. 7, a rotary rod 58 is fixed to each of the fourth gear 67 and the sixth gear 69. Further, a concave second coupling portion 67a is formed on the rear portion of the fourth gear 67.

  The first coupling portion 66a of the third gear 66 (see FIGS. 5 and 6) and the second coupling portion 67a of the fourth gear 67 (see FIG. 10) are located at positions facing each other. Therefore, when the motor storage portion 61 is connected to the gear storage portion 60, the first coupling portion 66a of the third gear 66 and the second coupling portion 67a of the fourth gear 67 are coupled.

  Due to such a structure, when the motor 62 operates while the motor housing 61 is connected to the gear housing 60, the first gear 64 to the third gear 66 rotate, and the third gear 66 to the fourth gear 66 rotate. Power is transmitted to 67, and the fourth gear 67 to the sixth gear 69 rotate. Since the fourth gear 67 and the sixth gear 69 rotate in the same direction as described above, the two left and right rotating rods 58 fixed to these gears rotate in the same direction. When the rotary rod 58 rotates, the convex portion 59 of the rotary rod 58 pushes the antifreeze bag 46.

  A magnet 61a is provided in the motor housing 61, and an adsorbing material 60a such as an iron plate that is attracted to the magnet 61a is provided at a location in the gear housing 60 that faces the magnet 61a. The motor housing 61 is magnetically coupled to the gear housing 60.

  The structure for connecting the motor housing portion 61 to the gear housing portion 60 is not limited to the structure using the magnet 61a, and may be another structure that allows the motor housing portion 61 to be easily attached to and detached from the gear housing portion 60. Is also good. For example, a structure may be used in which the motor storage portion 61 is connected to the gear storage portion 60 by using a claw.

  Further, as shown in FIG. 9, the motor housing portion 61 is provided with a power supply portion 63 for supplying electric power for operating the motor 62 from the outside. The power supply unit 63 is, for example, a USB port or a plug receiver. The power supply unit 63 is supplied with power from a mobile battery, a cord extended from the machine room 16 or the like. Further, the gear storage 60 is provided with a switch 63a for operating the motor 62.

  Such a freezing device 40 may be fixed in the lower freezing chamber 28, but may be configured so that the user can freely take it in and out of the lower freezing chamber 28.

(3) Method of Using Freezing Device (3-1) Method of Using in Freezer First, it is assumed that the freezing device 40 is previously stored in the lower freezing chamber 28. Therefore, the antifreeze liquid 42 has fallen to the freezing temperature or a temperature in the vicinity thereof. When the user opens the lower freezing chamber 28, the freezing device 40 can be visually recognized from the outside of the lower freezing chamber 28.

  Next, the user opens the lid 51 of the storage container 50 in the freezing device 40, mounts the storage item 44 on the metal plate 56 inside the container body 52, and mounts the antifreeze bag 46 on the storage item 44, The storage item 44 is sandwiched between the metal plate 56 and the antifreeze bag 46. Then, the antifreeze bag 46 is deformed so as to conform to the shape of the stored item 44 and comes into close contact with the entire upper surface or almost the entire surface of the stored item 44. Note that the “close contact” includes not only a state in which there is no air between the storage item 44 and the antifreeze bag 46, but also a state in which some air is present between the storage item 44 and the antifreeze bag 46.

  Next, the user closes the lid 51 of the storage container 50. At this time, the user adjusts the height of the lid 51 with respect to the container body 52 by using the height adjusting portion so that the convex portion 59 of the rotating rod 58 hits the antifreeze bag 46.

  Next, the user operates the switch 63a to operate the motor 62 and rotate the rotating rod 58. When the rotation of the rotating rod 58 is started, the convex portion 59 of the rotating rod 58 starts to push the antifreezing liquid bag 46 from the outside, and the antifreezing liquid 42 starts to be stirred inside the antifreezing liquid bag 46.

  Next, the user closes the lower freezer compartment 28. The stored item 44 is frozen inside the closed lower freezer compartment 28.

  Specifically, in the freezing device 40, the antifreeze bag 46 is deformed so as to conform to the shape of the stored item 44 and is in close contact with the entire upper surface or almost the entire upper surface of the stored item 44. Alternatively, almost the entire surface is surrounded by the antifreezing liquid 42 via the antifreezing liquid bag 46. As a result, heat exchange is performed with the antifreeze liquid 42 on the entire surface or almost the entire surface of the stored item 44, and the stored item 44 is rapidly cooled. When cooled in this way, the cooling speed of the stored item 44 is faster than when the stored item 44 is placed in the freezer as it is without using the freezing device 40. Of course, heat exchange is also performed between the storage item 44 and the metal plate 56 below it.

  Further, the rotating rod 58 rotates and the convex portions 59 of the rotating rod 58 continue to push the antifreezing liquid bag 46 periodically, and the antifreezing liquid 42 continues to be stirred inside the antifreezing liquid bag 46. Therefore, heat exchange is performed between the entire antifreeze liquid 42 inside the antifreeze liquid bag 46 and the storage item 44, the efficiency of heat exchange between the antifreeze liquid 42 and the storage item 44 is increased, and the storage item 44 is cooled further rapidly. .

  When a certain amount of time elapses after the stored item 44 is sandwiched between the metal plate 56 and the antifreezing liquid bag 46, the stored item 44 reaches the same temperature as the antifreeze liquid 42. The stored item 44 is frozen until the temperature becomes equal to that of the antifreeze liquid 42.

  The user may continue to rotate the rotating rod 58 until the stored item 44 is taken out from the freezing device 40, or may operate the switch 63a when a certain amount of time has passed after the stored item 44 was stored in the freezing device 40. The motor 62 may be stopped to stop the rotation of the rotary rod 58. Further, the rotary rod 58 may be configured to stop after continuously rotating for a predetermined time.

  When the user opens the lid 51 of the storage container 50 and takes out the storage item 44, the antifreeze bag 46 is restored to its original shape.

(3-2) Method of Using Outside Refrigerator First, it is assumed that the freezing device 40 is previously stored in the lower freezing compartment 28. Therefore, the antifreeze liquid 42 has fallen to the freezing temperature or a temperature in the vicinity thereof.

  Next, the user takes out the freezing device 40 from the lower freezer compartment 28 to the outside of the refrigerator. Then, the user stores the storage item 44 in the freezing device 40. Specifically, the user opens the lid 51 of the storage container 50, sandwiches the storage item 44 between the metal plate 56 and the antifreeze bag 46, and closes the lid 51, as described above. Further, the user connects the mobile battery to the power supply unit 63 of the freezing device 40. Next, the user operates the switch 63a to operate the motor 62 to rotate the rotating rod 58 to stir the antifreeze liquid 42. Thereby, similarly to the case where the freezing device 40 is used in the refrigerator 10, the stored items 44 are rapidly cooled and frozen.

  According to this method, the user can carry or leave the freezing device 40 in which the storage item 44 is stored while being rapidly cooled.

(4) Effects of the first embodiment In the first embodiment, when the storage item 44 is stored in the freezing device 40 and sandwiched between the metal plate 56 and the antifreezing liquid bag 46, the storage item 44 and the antifreezing liquid 42 and the like are separated. Heat exchange takes place. Further, a rotating rod 58 having a convex portion 59 is provided outside the antifreezing liquid bag 46, and by the rotation of the rotating rod 58, the convex portion 59 pushes the antifreezing liquid bag 46 from the outside to remove the antifreezing liquid 42 inside the antifreezing liquid bag 46. Stir. Therefore, as described above, heat exchange is performed between the entire antifreeze liquid 42 inside the antifreeze liquid bag 46 and the stored item 44. As a result, the efficiency of heat exchange between the antifreeze liquid 42 and the stored item 44 is increased, and the cooling efficiency of the stored item 44 is improved. Therefore, the stored item 44 can be rapidly cooled, and the stored item 44 can be frozen in a short time.

  Here, if the antifreeze liquid 42 is a highly viscous liquid, even if the antifreeze liquid bag 46 is pressed by the convex portion 59 of the rotating rod 58 and is torn, the antifreeze liquid 42 is unlikely to diffuse out of the antifreeze liquid bag 46. In addition, if the antifreeze liquid 42 is colored, even if the antifreeze liquid bag 46 is pressed by the convex portion 59 of the rotating rod 58 and is torn and the antifreeze liquid 42 leaks, it is easy for the user to know that the antifreeze liquid 42 has leaked. Can be noticed.

  Further, if the antifreeze bag 46 is made of a stretchable thin film, the antifreeze bag 46 can be brought into close contact with the stored item 44, and the stored item 44 can be cooled efficiently. Furthermore, if the antifreeze bag 46 has high durability and strength, it will not easily break even if it is pushed by the convex portion 59 of the rotating rod 58, and can withstand multiple uses. If the top of the protrusion of the protrusion 59 is rounded and does not have a corner, the antifreeze bag 46 is not easily torn even if it is pushed by the protrusion 59 of the rotary rod 58.

  Further, if the freezing device 40 is provided with the power supply unit 63, the mobile battery can be connected thereto. Therefore, the user can rapidly cool the stored item 44 by rotating the rotating rod 58 to stir the antifreeze liquid 42 while carrying the freezing device 40 out of the refrigerator and carrying it.

  Further, if the antifreeze bag 46 is long in one direction and the longitudinal direction of the antifreeze bag 46 and the extension direction of the rotating rod 58 coincide, the contact area between the antifreeze bag 46 and the convex portion 59 of the rotating rod 58 becomes large. The stirring efficiency of the antifreeze liquid 42 is good. Further, as described above, if the convex portion 59 extends continuously in the longitudinal direction of the rotary rod 58 without interruption, the contact area between the antifreeze bag 46 and the convex portion 59 of the rotary rod 58 becomes large, and the antifreeze liquid 42 is Good stirring efficiency.

  Further, if the lid 51 of the storage container 50 is provided with the rotating rod 58 as described above, the user puts the storage item 44 and the antifreeze bag 46 in the container body 52 of the storage container 50, and opens the lid 51 from above. The antifreeze bag 46 and the convex portion 59 of the rotary rod 58 can be brought into contact with each other only by covering them. Here, if the height adjusting portion for adjusting the height of the lid 51 with respect to the container body 52 is formed, the degree of contact between the antifreezing liquid bag 46 and the convex portion 59 of the rotating rod 58 can be easily adjusted. .

  Further, when the two left and right rotating rods 58 rotate in opposite directions, the flows of the antifreezing liquid 42 generated by the rotation of the respective rotating rods 58 may cancel each other and the stirring efficiency of the antifreezing liquid 42 may deteriorate. If the rotating rod 58 rotates in the same direction, there is no such fear.

  Further, if the cool storage agent 55 is laid under the metal plate 56 as described above, the temperature rise of the metal plate 56 can be prevented.

(5) Modified Example of First Embodiment A modified example of the first embodiment will be described. Any one of a plurality of modifications described below may be applied to the first embodiment, or any two or more of the modifications described below may be combined and applied. . Various modifications can be made in addition to the following modifications.

(5-1) Modification Example 1 (Rotation Rod Rotation Control Example 1)
The rotation of the rotary rod 58 may be started by a method other than the operation of the switch 63a. For example, the freezing device 40 may be provided with a thermometer (not shown) that measures the temperature inside the storage container 50, and the thermometer may be connected to the control device 11. When the temperature measured by this thermometer becomes higher than the temperature measured up to that point, or when the temperature measured by this thermometer becomes a predetermined temperature or higher, the control device 11 is placed inside the storage container 50. It may be configured to determine that the storage item 44 is stored and start rotating the rotary rod 58.

(5-2) Modification Example 2 (Rotation Rod Rotation Control Example 2)
Similar to the first modification, the freezing device 40 may be provided with a thermometer (not shown) that measures the temperature inside the storage container 50, and the thermometer may be connected to the control device 11. The control device 11 may be configured to terminate the rotation of the rotary rod 58 when the temperature measured by the thermometer becomes equal to or lower than a predetermined temperature.

  Here, when food having cells (for example, vegetables and fruits) is frozen, if the food is rapidly cooled in the temperature range of −5 to −1 ° C., which is the maximum ice crystal formation zone, cell destruction may occur. It is known that the quality of foods can be suppressed and the quality of foods does not easily deteriorate. Therefore, it is preferable to set a temperature lower than −5 ° C. (for example, any temperature in the range of −10 to −6 ° C.) as the predetermined temperature at which the rotation of the rotary rod 58 is stopped. As a result, while the temperature of the food passes through the maximum ice crystal formation zone, the contents 44 are rapidly cooled by the rotation of the rotary rod 58, and the food is rotated after the temperature of the food passes through the maximum ice crystal formation zone. The rotation of the rod 58 will stop.

(5-3) Change Example 3 (Change Example of Placement of Rotating Rod)
The location of the rotary rod 58 is not limited to being above the antifreezing liquid bag 46 as long as the convex portion 59 thereof can come into contact with the antifreezing liquid bag 46. For example, the rotating rods 58 may be arranged to extend in the front-rear direction on the left and right sides of the antifreeze bag 46, or may be arranged to extend in the left-right direction on the front and rear sides of the antifreeze bag 46. Further, the rotary rod 58 may be arranged so as to extend in the vertical direction at any place inside the storage container 50.

(5-4) Modification 4 (Modification of the shape of the convex portion of the rotating rod)
The shape of the convex portion of the rotary rod is not limited to the spiral shape like the convex portion 59. For example, as shown in FIG. 11, a plurality of independent convex portions 59b (that is, not continuous from one end to the other end in the longitudinal direction of the rotary rod) may be formed on the rotary rod 58a. However, it is preferable that the convex portion does not make one round in the circumferential direction at the same position in the longitudinal direction of the rotary rod so that the convex portion does not always press the same position of the antifreeze bag 46 while the rotary rod rotates. .

(5-5) Modification 5 (Modification of how to provide the antifreeze bag)
The antifreeze bag 46 may be adhered to the side wall 52b of the container body 52. For example, the antifreeze bag 46 may be adhered to any one of the four side walls 52b of the container body 52, or may be adhered to the front and rear or left and right facing two side walls 52b. It may be adhered to one side wall 52b. In this case, the user puts the storage item 44 under the antifreezing liquid bag 46 from the place where the antifreezing liquid bag 46 and the side wall 52b are not bonded.

  When the antifreeze bag 46 is adhered to the two side walls 52b or the three side walls 52b facing each other, the central portion of the antifreeze bag 46 bulges downward. Therefore, when the storage item 44 is arranged below the central portion of the antifreezing liquid bag 46, the antifreezing liquid bag 46 can be brought into close contact with the upper portion of the storage item 44.

  Further, the stretchable thin film may be attached to the side wall 52b of the container body 52, and the antifreeze liquid 42 may be put between the stretchable thin film and the side wall 52b. The stretchable thin film used in that case may be the same as the stretchable thin film forming the antifreeze bag 46.

(5-6) Modification 6 (Modification 1 of the stirring method of the antifreeze liquid)
The antifreeze liquid 42 may be stirred by a stirring means different from the rotating rod 58.

  For example, in FIG. 12, a first pressing member 70 as a stirring means is arranged above and above the antifreeze bag 46, and a second pressing member 71 as a stirring means is also arranged behind the antifreeze bag 46. The first pressing member 70 is a member that comes into contact with and pushes the front upper portion of the antifreeze bag 46, and the second pressing member 71 is a member that comes into contact with the rear portion of the antifreeze bag 46 and pushes it. The first pressing member 70 and the second pressing member 71 include, for example, a cylinder and a piston. Then, the piston advances and retracts due to the supply and discharge of the fluid into the cylinder, and when the piston advances, the antifreeze bag 46 is pushed.

  These pressing members 70 and 71 are connected to the control device 11. The control device 11 alternately performs the operation of the first pressing member 70 pressing the antifreezing liquid bag 46 and the operation of the second pressing member 71 pressing the antifreezing liquid bag 46. In this way, the antifreeze bag 46 is rubbed by being alternately pushed from two places, and the antifreeze liquid 42 inside the antifreeze bag 46 is agitated.

  The pressing member that presses the antifreeze bag 46 may be one, or three or more. No matter how many pressing members are used, the pressing members can push and rub the antifreeze bag 46. Further, the place where the antifreeze bag 46 is pressed by the pressing member is not limited.

(5-7) Modification 7 (Modification 2 of antifreeze stirring method)
An air blower as an agitating means (not shown) is arranged in the vicinity of the antifreeze bag 46, and the blower sends strong wind to the antifreeze bag 46 to deform the antifreeze bag 46, thereby removing the antifreeze liquid 42 inside the antifreeze bag 46. You may stir. In that case, the air blower may be connected to the controller 11, and the controller 11 may control the air blower. For example, the control device 11 may control the wind blown by the blower device so that the wind blows the antifreeze liquid 42 largely.

(5-8) Modification 8 (Modification for using the freezing device outside the refrigerator)
A refrigeration cycle for cooling the antifreeze liquid 42 is provided as part of the configuration of the freezing device 40 so that the user can continue to cool the antifreeze liquid 42 even when the freezing device 40 is used outside the refrigerator 10. May be.

  Further, in order for the user to control the device for stirring the antifreeze liquid 42 even when the freezing device 40 is used outside the refrigerator 10, a unique control device different from the control device 11 of the refrigerator 10 is a freezing device. It may be provided as part of the configuration of 40. In this case, this unique control device can perform each control described above.

  The freezing device 40 according to the first embodiment and its modification may not be used in a refrigerator.

(5-9) Modification 9 (Modification of location of freezing device)
A dedicated freezing chamber for freezing the stored items 44 using the antifreeze liquid 42 may be provided at any place of the refrigerator 10, and the entire freezing chamber may function as a freezing device. Further, at least a portion of the freezing device that stores the storage item 44 may be drawable like a pull-out container.

  13 to 15 show an example in which the refrigerator 10 is provided with a freezing chamber for freezing the stored items 44 using the antifreeze liquid 42, and the portion for storing the stored items 44 can be pulled out. Although not shown, in this example, the liquid freezing is performed as a dedicated freezing chamber for freezing the stored item 44 using the antifreeze liquid 42 at any place in the freezing space, for example, an upper place in the lower freezing chamber 28. It is assumed that the chamber 73 is provided.

  A pull-out container 74 is housed inside the liquid freezing chamber 73. A pull-out type door 75 is fixed to the front part of the pull-out type container 74. Therefore, the pull-out type door 75 and the pull-out type container 74 are integrally pulled out forward or pushed backward. The pull-out door 75 closes the front opening of the liquid freezing chamber 73 when pushed in backward. The pull-out door 75 is provided with a handle portion 76. The handle 76 can be moved up and down.

  A metal plate 56 is arranged inside the pull-out container 74. Although not shown, the cool storage agent 55 may be disposed between the bottom of the pull-out container 74 and the metal plate 56. As shown in FIGS. 13 to 15, the user can place the storage item 44 on the metal plate 56 and place the antifreeze bag 46 on it.

  The metal plate 56 can be moved up and down by operating the handle portion 76. Specifically, when the handle portion 76 is raised as shown in FIG. 14, the metal plate 56 is lowered, and when the handle portion 76 is lowered as shown in FIG. 13, the metal plate 56 is raised. The structure for interlocking the operation of the grip portion 76 and the vertical movement of the metal plate 56 is not limited. For example, an electric actuator is attached to the metal plate 56, and the grip portion 76 serves as a switch for operating the electric actuator. The electric actuator operates based on the operation of the grip portion 76 to move the metal plate 56 up and down. Is also good. In addition, the metal plate 56 may move up and down based on the operation of the handle 76 by a mechanical mechanism that does not use electric power.

  On the other hand, on the ceiling side of the liquid freezing chamber 73, the same rotating rod 58 extending in the front-rear direction as described above is provided. A motor for rotating the rotary rod 58 and a plurality of gears for transmitting power from the motor to the rotary rod 58 are provided behind the rotary rod 58. The mechanism for rotating the rotary rod 58 is the same as the mechanism in the above embodiment.

  When storing the storage item 44 in the liquid freezing chamber 73, the user raises the grip portion 76 and pulls the pull-out container 74 forward. At this time, the metal plate 56 is lowered. Next, the user places the storage item 44 on the metal plate 56 and the antifreeze bag 46 on it (FIG. 15). Next, the user pushes the pull-out type container 74 backward while keeping the grip 76 raised, and closes the liquid freezing chamber 73 with the pull-out type door 75 (FIG. 14). At this time, the metal plate 56 is also lowered.

  Next, the user lowers the grip portion 76. Then, the metal plate 56 rises, the stored items 44 and the antifreezing liquid bag 46 placed on the metal plate 56 are lifted, and the antifreezing liquid bag 46 hits the rotating rod 58 (FIG. 13). In this state, when the user operates the switch to start rotating the rotary rod 58, the stirring of the antifreezing liquid 42 starts inside the antifreezing liquid bag 46 as described above. Then, similarly to the above, the stored item 44 is frozen.

  When taking out the stored item 44 from the liquid freezing chamber 73, the user first raises the grip portion 76 (FIG. 14). Then, the metal plate 56 is lowered, the stored items 44 and the antifreezing liquid bag 46 placed on the metal plate 56 are also lowered, and the antifreezing liquid bag 46 is separated from the rotating rod 58. Next, the user pulls the pull-out container 74 forward while holding the grip portion 76 (FIG. 15). At this time, since the antifreezing liquid bag 46 is already separated from the rotating rod 58, the stored item 44 and the antifreezing liquid bag 46 are pulled out together with the pull-out container 74 without the antifreezing liquid bag 46 being caught by the rotating rod 58. Next, the user removes the antifreeze bag 46 and takes out the stored item 44.

(5-10) Modification 10 (Modification 9 Modification)
The same structure as the liquid freezing chamber 73 of the modification 9 may be provided as a freezing device that can be taken out of the refrigerator instead of as one chamber in the refrigerator. Such a freezing device may be fixed to the inside of the refrigerator with a claw member or the like so as to be easily removable, or may not be fixed to the inside of the refrigerator. Further, such a freezing device may not be premised on being used in the refrigerator 10.

2. Embodiment 2
(1) Overall Structure of Refrigerator The overall structure of the refrigerator of the second embodiment is the same as the overall structure of the refrigerator 10 of the first embodiment. As shown in FIGS. 16 and 17, in the second embodiment, the freezing device 140 is assumed to be housed inside the pull-out container 18 of the lower freezing chamber 28. The freezing device 140 may be easily and detachably fixed to the pull-out type container 18 by using a claw member or the like, or may be non-detachably fixed to the pull-out type container 18, or may be a pull-out type container. It does not have to be fixed to 18.

  However, the freezing device 140 may be stored in another place in the freezing space (for example, inside the upper freezing chamber 26) or in the refrigerating space.

(2) Structure of Freezing Device As shown in FIGS. 18 and 19, the freezing device 140 has the antifreezing liquid container 150 in which the antifreezing liquid 42 is placed. The antifreeze container 150 has an upper lid 151 and a lower container body 152. The container body 152 is open upward, and the inside thereof is filled with the antifreeze liquid 42. Further, at the center of the lid 151, as will be described later, an opening 151a for allowing the user to take in and out the storage item 44 is formed. The lid 151 is put on the container body 152 to close the opening of the container body 152. The antifreeze container 150 may be surrounded from the outside by a heat insulating wall made of foam resin or the like.

  As shown in FIGS. 18 and 19, a bag-shaped storage bag 146 for storing the storage items 44 is arranged inside the antifreeze liquid container 150. The storage bag 146 is a kind of storage member for storing the storage item 44 therein. The storage bag 146 is made of a stretchable thin film similar to the antifreeze bag 46 of the first embodiment. That is, the antifreeze bag 46 is preferably made of a stretchable thin film having high stretchability, high recovery property, high durability and high strength, and its material is, for example, EVA (ethylene-vinyl acetate copolymer resin), polyisoprene. Examples include rubber and nylon. The inner surface of the storage bag 146 is a contact portion with which the storage item 44 can contact.

  The storage bag 146 is filled with the antifreeze liquid 42 on the outside. That is, the antifreeze liquid 42 is filled between the outer surface of the storage bag 146 and the inner surface of the antifreeze liquid container 150. Therefore, the storage bag 146 is immersed in the antifreeze liquid 42. The antifreeze liquid 42 is a liquid that maintains fluidity without freezing even at a freezing temperature, and as the specific liquid, the same liquid as that of the first embodiment can be used.

  On the outside of the storage bag 146, an opening / closing member for opening / closing the upward opening 146a (see FIG. 18) of the storage bag 146 is provided. The opening / closing member has two frame members 170 that come into contact with the storage bag 146, a hinge portion 171 that connects the two frame members 170, and a holding member 172 described later.

  The frame member 170 is a member in which an upper side portion 170a, a lower side portion 170b, four side portions of a left side portion and a right side portion form a rectangle. The four sides of the frame member 170 are in contact with the storage bag 146 from the outside. Specifically, the upper side 170a contacts the storage bag 146 near the opening 146a of the storage bag 146, the lower side 170b contacts the storage bag 146 near the bottom of the storage bag 146, and the left and right sides of the antifreeze container 150 are in contact with each other. The storage bag 146 is in close contact with the left and right side walls. The frame member 170 and the storage bag 146 may be bonded together. Further, under the bottom of the storage bag 146, the lower side portions 170b of the two frame members 170 are connected by the hinge portion 171.

  Due to such a structure, as shown in FIGS. 18 and 19, in the two frame members 170, the upper side portions 170a are close to or apart from each other with the lower side portion 170b being restrained by the hinge portion 171. It is possible to operate.

  The opening 146a of the storage bag 146 can be opened and closed by operating this opening / closing member. As shown in FIG. 18, when the opening 146a of the storage bag 146 is in the open state, the storage bag 146 is V-shaped in the cross section in the front-rear direction. At this time, the upper side portions 170a of the two frame members 170 of the opening / closing member are separated from each other, and the opening / closing member is V-shaped in the cross section in the front-rear direction.

  When closing the opening 146a of the storage bag 146, the user moves the upper side portions 170a of the two frame members 170 of the opening / closing member in a direction to draw them together. Further, the pressure from the antifreeze liquid 42 applies a force to the storage bag 146 in the direction of closing the opening 146a, so that the opening 146a of the storage bag 146 naturally moves in the closing direction. Then, as shown in FIG. 19, when the upper side portions 170a of the two frame members 170 are brought into close contact with or close to each other, the opening 146a of the storage bag 146 is closed. When the opening 146a of the storage bag 146 is closed while the storage item 44 is stored, the storage bag 146 is pressed against the storage item 44 by the pressure of the antifreezing liquid 42 around the storage bag 146 as shown in FIG. For example, the storage bag 146 comes into close contact with the storage item 44. The "close contact" includes not only a state in which there is no air between the stored item 44 and the storage bag 146, but also a state in which there is some air between the stored item 44 and the storage bag 146.

  The closed state of the opening 146a of the storage bag 146 is held by the holding member 172 provided on the upper side 170a of the frame member 170. The holding member 172 is, for example, a magnet that attracts the upper side portions 170a of the two frame members 170 together, or a metal member that fixes the upper side portions 170a of the two frame members 170 together. By such a holding member 172, the upper side portions 170a of the two frame members 170 are held in close contact with or close to each other, and thereby the closed state of the opening 146a of the storage bag 146 is held.

  As shown in FIG. 19 and the like, a cover 175 is provided between the opening 146 a of the storage bag 146 and the opening 151 a of the lid 151 of the antifreeze container 150. That is, the opening 151 a of the lid 151 is covered with the cover 175 except for the location of the opening 146 a of the storage bag 146. The cover 175 has elasticity like the storage bag 146, and is made of, for example, an elastic thin film that is the same as or similar to the storage bag 146. The cover 175 prevents the user from putting his / her hand on the antifreezing liquid 42 and spilling the antifreezing liquid 42 from the opening 151a of the lid 151.

  As shown in FIGS. 18 and 19, a rotating body storage portion 160 is formed inside the antifreeze liquid container 150 and outside the storage bag 146. Specifically, as shown in FIG. 17, the rotating body housing 160 is fixed to the rear side wall of the antifreeze container 150. The inside of the rotator housing 160 is separated from other places inside the antifreeze container 150. However, as shown in FIGS. 18 and 19, one inlet 161 and one outlet 162 are formed as holes in the rotating body housing 160. These holes allow the inside of the rotating body housing 160 to communicate with other places inside the antifreeze container 150. Therefore, the antifreezing liquid 42 inside the antifreezing liquid container 150 can pass through the inside of the rotating body housing 160. The suction port 161 is open forward, and the blowout port 162 is open downward.

  An impeller 165 as a rotating body is stored inside the rotating body storage portion 160. The impeller 165 is arranged so that its rotation axis is in the front-rear direction. Further, the impeller 165 is arranged behind the suction port 161. However, the impeller 165 is not fixed to the surroundings, and when it is not rotating, the impeller 165 floats inside the rotor housing portion 160 filled with the antifreeze liquid 42.

  The impeller 165 has a plurality of blades. Then, as shown in FIG. 20, a bar magnet 166 is fixed to the impeller 165 so that the position of one blade is the N pole and the position of the blade facing the blade is the S pole. .

  On the other hand, as shown in FIG. 17, a motor 167 as a stirring means for the antifreeze liquid 42 is fixed to the rear wall surface 28a of the lower freezing compartment 28. The position of the motor 167 is a position facing the rotary body storage unit 160 as shown in FIGS. 17 and 20B when the pull-out container 18 of the lower freezer compartment 28 is pushed inward. As shown in FIG. 16, a notch 19 is formed on the rear side wall of the pull-out container 18 so that the motor 167 and the rotating body accommodating portion 160 can approach each other when they are pushed inward. .

  As shown in FIGS. 17 and 20B, the rotation shaft of the motor 167 extends forward, and the magnet 168 is fixed to the rotation shaft. The magnet 168 is fixed so that its N and S poles can rotate in a plane orthogonal to the rotation axis of the motor 167.

  Due to such a structure, when the user pushes the pull-out container 18 of the lower freezer compartment 28 inward, as shown in FIG. 20B, the magnet 168 of the motor 167 outside the antifreeze container 150 and the antifreeze liquid are provided. The bar magnet 166 of the impeller 165 inside the container 150 is in close proximity with the side wall of the antifreeze container 150 in between. Then, the impeller 165 is positioned inside the rotator housing 160 by the magnetic force.

  When the motor 167 operates in this state, the magnet 168 of the rotation shaft of the motor 167 rotates, and the magnetic force also rotates the impeller 165 to which the bar magnet 166 is fixed. When the impeller 165 rotates, the antifreeze liquid 42 is sucked into the rotating body housing 160 from the suction port 161, and is blown out of the rotating body housing 160 from the outlet 162. As a result, the antifreeze liquid 42 circulates inside the antifreeze liquid container 150, and the antifreeze liquid 42 is stirred.

  The freezing device 140 or the refrigerator compartment door 21 is provided with a switch (not shown) for operating the motor 167.

  Further, a refrigerant pipe (not shown) may be provided inside the antifreeze container 150 and outside the storage bag 146, and the antifreeze liquid 42 may be cooled by flowing a low-temperature refrigerant inside the refrigerant pipe.

  In addition, a bag may be provided inside the antifreeze liquid container 150, and the bag may be inflated when the storage bag 146 is in the closed state, so that the liquid surface of the antifreeze liquid 42 is kept constant. .

(3) Method of Using Freezing Device It is assumed that the freezing device 140 is previously stored in the drawer type container 18 of the lower freezing chamber 28. Therefore, the antifreeze liquid 42 has fallen to the freezing temperature or a temperature in the vicinity thereof.

  The user opens the lower freezer compartment 28 and pulls the pull-out container 18 forward. Next, the user puts the storage item 44 in the storage bag 146 of the freezing device 140 in the pull-out container 18. Next, the user closes the opening 146a of the storage bag 146 and holds the opening 146a in the closed state by the holding member 172.

  Next, the user pushes the pull-out container 18 backward and closes the lower freezer compartment 28. When the user pushes the pull-out container 18 backward, the impeller 165 is positioned as described above. Next, the user operates the switch to operate the motor 167 and rotate the impeller 165. When the rotation of the impeller 165 is started, the antifreeze liquid 42 starts to be stirred inside the antifreeze liquid container 150.

  Then, the stored item 44 is cooled and frozen in the closed lower freezer compartment 28.

  Specifically, since the storage bag 146 is under pressure from the antifreeze liquid 42, the storage bag 146 is pressed against the entire surface of the stored item 44 contained therein. At this time, the storage bag 146 expands and contracts along the shape of the storage item 44. Since the storage bag 146 is pressed against the entire surface of the storage item 44, the entire surface of the storage item 44 is surrounded by the antifreeze liquid 42 via the storage bag 146. As a result, heat exchange is performed with the antifreeze liquid 42 on the entire surface of the stored item 44, and the stored item 44 is rapidly cooled. When cooled in this way, the cooling speed of the stored item 44 is faster than when the stored item 44 is directly placed in the freezer without using the freezing device 140.

  While the storage item 44 is being cooled, the inside of the storage bag 146 may be in a vacuum like a vacuum pack, but some air remains in a part between the storage item 44 and the storage bag 146. Is also good.

  Further, as the impeller 165 continues to rotate, the antifreeze liquid 42 continues to be stirred. Therefore, heat exchange is performed between the entire antifreeze liquid 42 inside the antifreeze liquid container 150 and the storage item 44, the efficiency of heat exchange between the antifreeze liquid 42 and the storage item 44 is increased, and the storage item 44 is cooled further rapidly. .

  After a certain amount of time has passed since the stored item 44 was placed in the storage bag 146, the stored item 44 reaches a temperature equivalent to that of the antifreeze liquid 42. The stored item 44 is frozen until the temperature becomes equal to that of the antifreeze liquid 42.

  The user may continue to rotate the impeller 165 until the storage item 44 is taken out from the freezing device 140, or operate the switch when a certain amount of time has passed after the storage item 44 was stored in the freezing device 140. The motor 167 may be stopped to stop the rotation of the impeller 165. Further, the impeller 165 may be configured to stop after being continuously rotated for a predetermined time.

  The user takes the freezing device 140 out of the refrigerator, stores the storage item 44 in the freezing device 140 outside the storage chamber as described above, rotates the impeller 165 to stir the antifreeze liquid 42, and stores the storage item. It is also possible to freeze 44.

(4) Effect of Embodiment 2 In Embodiment 2, when the storage item 44 enters the storage bag 146 immersed in the antifreeze liquid 42, the storage bag 146 is placed on the entire surface of the storage item 44 by the pressure of the antifreeze liquid 42 as described above. By being pressed, heat is exchanged between the entire surface of the stored item 44 and the antifreeze liquid 42.

  Further, the impeller 165 stored inside the antifreeze container 150 and outside the storage bag 146 is rotated to stir the antifreeze liquid 42. Therefore, heat exchange is performed between the entire antifreeze liquid 42 inside the antifreeze liquid container 150 and the stored item 44. As a result, the efficiency of heat exchange between the antifreeze liquid 42 and the stored item 44 is increased, and the cooling efficiency of the stored item 44 is improved. Therefore, the stored item 44 can be rapidly cooled, and the stored item 44 can be frozen in a short time.

  Here, in order to rotate the impeller 165, the impeller 165 inside the antifreezing liquid container 150 is rotated by the magnetic force from the outside of the antifreezing liquid container 150 to stir the antifreezing liquid 42. Therefore, a complicated structure for transmitting the force of a drive source such as a motor arranged outside the antifreezing liquid container 150 to the impeller 165 arranged inside the antifreezing liquid container 150 is not necessary, and the side wall of the antifreezing liquid container 150 is not required. It is not necessary to make the structure such that the antifreeze liquid 42 may leak such as making holes.

  A motor 167 to which the magnet 168 is fixed is fixed to the back of the drawer type container 18 in which the antifreeze container 150 is stored. Further, the impeller 165 to which the bar magnet 166 is fixed is housed inside the antifreezing liquid container 150 without being fixed. Therefore, when the user merely pushes the pull-out container 18 inward, a magnetic force acts between these two magnets, and the impeller 165 can be reliably positioned.

(5) Modification of Second Embodiment A modification of the second embodiment will be described. Any one of a plurality of modifications described below may be applied to the second embodiment, or any two or more of the modifications described below may be combined and applied. . Various modifications can be made in addition to the following modifications.

(5-1) Modification Example 1 (Modification Example of Rotating Body)
The rotor that stirs the antifreeze liquid 42 is not limited to the impeller 165 described above. For example, as the rotating body, one plate-shaped member or a rod-shaped member used in a general magnetic stirrer may be used.

(5-2) Modified Example 2 (Modified Example 1 of Rotating Body Storage Unit)
There may be two or more at least one of the inlet and the outlet of the antifreeze liquid 42 in the rotating body storage portion.

  When the rotating body rotates in a non-uniform manner, the flow of the antifreeze liquid 42 inside the rotating body housing may change. In that case, each of the holes formed in the rotary member storage portion can be a suction port or a blowout port.

(5-3) Modified Example 3 (Modified Example 2 of Rotating Body Storage Unit)
The rotating body storage portion may not be formed inside the antifreeze liquid container 150, and the rotating body may be arranged in an exposed state inside the antifreeze liquid container 150. Also in that case, the antifreeze liquid 42 is stirred by the rotation of the rotating body inside the antifreeze liquid container 150.

(5-4) Modification 4 (control example 1 of rotation of the rotating body)
The rotation of the rotating body that stirs the antifreeze liquid 42 may be started by a method other than the operation of the switch as described above. For example, the freezing device 140 may be provided with a thermometer (not shown) that measures the temperature inside the storage bag 146, and the thermometer may be connected to the control device 11. When the temperature measured by this thermometer becomes higher than the temperature measured up to that point, or when the temperature measured by this thermometer becomes a predetermined temperature or higher, the control device 11 is placed inside the storage bag 146. It may be configured to determine that the stored item 44 is stored and start rotating the rotating body.

(5-5) Modification 5 (Rotation control example 2)
Similar to the first modification, the freezing device 140 may be provided with a thermometer (not shown) that measures the temperature inside the storage bag 146, and the thermometer may be connected to the control device 11. Then, when the temperature measured by the thermometer becomes equal to or lower than a predetermined temperature, the control device 11 may be configured to end the rotation of the rotating body.

  Here, it is preferable that a temperature lower than −5 ° C. (for example, any temperature in the range of −10 to −6 ° C.) is set as the predetermined temperature at which the rotation of the rotating body is stopped. Thereby, while the temperature of the food passes through the maximum ice crystal formation zone (the temperature zone of −5 to −1 ° C.), the contents 44 are rapidly cooled by the rotation of the rotating body, and the temperature of the food reaches the maximum ice. The rotation of the rotating body stops after passing through the crystal formation zone.

(5-6) Modification 6 (Modification of rotating body)
The mechanism for rotating the rotating body by the magnetic force from the outside of the antifreeze container 150 is not limited to the above mechanism.

  For example, instead of the motor 167 and the magnet 168 in the above embodiment, a coil as a stirring means is provided outside the antifreeze liquid container 150, the energization to the coil is controlled, and the rotating body is rotated by the magnetic force generated by the coil. It may be a mechanism.

(5-7) Modification 7 (Modification of storage bag)
Although the storage bag 146 is V-shaped in the cross section in the front-rear direction in the above embodiment, it may have another shape. For example, on the cross section in the front-rear direction, either one of the front portion and the rear portion of the storage bag 146 may be vertical and the other may be inclined with respect to the one. Of course, the front part and the rear part are continuous at the bottom of the storage bag 146. The front part and the rear part are a front part and a rear part with the bottom of the storage bag 146 as a boundary.

  Further, either the front portion or the rear portion of the storage bag 146 of the above-described embodiment may be replaced with a different elastic thin film forming the storage bag 146. For example, either the front portion or the rear portion of the storage bag 146 of the above embodiment may be replaced with a plate member. In the case of this example, the plate-shaped member and the stretchable thin film having the side portions bonded to the plate-shaped member constitute a storage member for storing the storage item 44. The storage item 44 stored in the storage member of this example is sandwiched between the stretchable thin film and the plate member.

  10 ... Refrigerator, 11 ... Control device, 12 ... Main body, 14 ... Upper and lower partition walls, 16 ... Machine room, 17 ... Compressor, 18 ... Draw-out container, 19 ... Notch, 20 ... Refrigerator, 21 ... Refrigerator door , 22 ... Vegetable room, 23 ... Vegetable room door, 24 ... Chilled room, 25 ... Ice making room door, 26 ... Upper freezing room, 27 ... Upper freezing room door, 28 ... Lower freezing room, 28a ... Rear wall surface, 29 ... Bottom Freezer compartment door, 30 ... 1st cooler, 31 ... 1st ventilation device, 32 ... Duct, 33 ... Air outlet, 34 ... Suction opening, 35 ... 2nd cooler, 36 ... 2nd ventilation device, 37 ... Air outlet , 38 ... Suction port, 40 ... Freezing device, 42 ... Antifreeze liquid, 44 ... Storage item, 46 ... Antifreezing liquid bag, 50 ... Storage container, 51 ... Lid, 51a ... Top plate, 51b ... Side wall, 51c ... Inward claw part, 51d ... claw member, 52 ... container body, 52a ... bottom plate, 52b ... side wall, 52c ... outward claw part, 55 Cooling agent, 56 ... Metal plate, 58 ... Rotating rod, 58a ... Rotating rod, 59 ... Convex portion, 59b ... Convex portion, 60 ... Gear storage portion, 60a ... Adsorbed material, 61 ... Motor storage portion, 61a ... Magnet, 62 ... motor, 63 ... power supply section, 63a ... switch, 64 ... first gear, 65 ... second gear, 66 ... third gear, 66a ... first coupling section, 67 ... fourth gear, 67a ... second coupling section , 68 ... Fifth gear, 69 ... Sixth gear, 70 ... First pressing member, 71 ... Second pressing member, 73 ... Liquid freezing chamber, 74 ... Draw-out container, 75 ... Draw-out door, 76 ... Handle part, 140 ... Freezing device, 146 ... Storage bag, 146a ... Opening part, 150 ... Antifreeze container, 151 ... Lid, 151a ... Opening part, 152 ... Container body, 160 ... Rotating body storing part, 161 ... Suction port, 162 ... Outlet port , 165 ... Impeller, 166 ... Bar magnet, 16 ... motor, 168 ... magnet 170 ... frame member, 170a ... upper portion, 170b ... lower portion, 171 ... hinge portion, 172 ... holding member, 175 ... cover

Claims (19)

A freezing device is provided to freeze stored items using an antifreeze solution.
In the refrigerator in which the freezing device has an antifreezing liquid container containing an antifreezing liquid, the antifreezing liquid container has a contact portion that comes into contact with a stored item, and the stored portion is frozen by the contact portion contacting the stored item. ,
A refrigerator comprising stirring means for stirring the antifreeze liquid from the outside of the antifreeze liquid container.   A rotating rod as the stirring means in which a convex portion is formed is provided outside the antifreezing liquid container, and the convex portion presses the antifreezing liquid container by rotating the rotating rod to stir the antifreezing liquid inside the antifreezing liquid container. The refrigerator according to claim 1, wherein:   The refrigerator according to claim 2, wherein the antifreeze container is long in one direction, and the rotary rod is extended in a longitudinal direction of the antifreeze container.   The refrigerator according to claim 1, wherein the antifreeze liquid is a high viscosity liquid.   The refrigerator according to claim 1, wherein the antifreeze liquid is colored.   The refrigerator according to claim 1, wherein at least a part of the antifreeze container is made of a stretchable thin film.   The refrigerator according to any one of claims 1 to 6, wherein a power supply unit for externally supplying electric power to the freezing device is provided in the freezing device.   A storage container for storing the antifreeze container and the storage object is provided, and the storage container can be opened and closed by separating it into an upper lid and a lower container body, and the stirring means is provided on the lid. The refrigerator according to any one of claims 1 to 7.   The refrigerator according to claim 8, wherein a power supply unit for externally supplying power to the freezing device is provided on the lid side.   The refrigerator according to any one of claims 1 to 7, further comprising a drawer-type container in which the antifreezing liquid container and the stored items are stored.   The antifreezing liquid container is accommodated in the pull-out container, and the antifreezing liquid container can contact and separate from the stirring means in a state where the pull-out container is pushed to the rear of the refrigerator. Refrigerator described. A storage member for storing the stored items is provided inside the antifreeze container, the inner surface of the storage member is the contact portion, and the antifreeze is put outside the storage member.
A rotating body is stored inside the antifreeze container and outside the storage member, and the rotating body is rotated by magnetic force from the stirring means arranged outside the antifreeze container to stir the antifreeze liquid. The refrigerator according to 1.   A rotating body storage part is formed inside the antifreezing liquid container, the rotating body is stored in the rotating body storage part, a suction port of the antifreezing liquid to the rotating body storage part, and the antifreezing liquid from the rotating body storage part The refrigerator according to claim 12, wherein a blowout port of the refrigerator is formed.   The refrigerator according to claim 12 or 13, wherein a rotatable magnet is provided outside the antifreeze liquid container, and the rotating body is rotated by a magnetic force generated when the stirring unit operates and the magnet rotates.   When the magnet outside the antifreeze container is separated from the antifreeze container, the rotating body floats in the antifreeze liquid, and the magnetic force when the magnet outside the antifreeze container approaches the antifreeze container. The refrigerator according to claim 14, wherein the rotating body is positioned by.   The refrigerator according to any one of claims 12 to 15, wherein the storage member opens upward and is immersed in the antifreeze liquid, and the storage member is pressed against the stored items by the pressure of the antifreeze liquid.   The refrigerator according to claim 1, wherein the freezing device is arranged in a freezing room.   The refrigerator according to claim 10 or 11, wherein the freezing device is formed as one chamber in a refrigerator. In a freezing device having an antifreeze container containing an antifreeze liquid, the antifreeze container has a contact part that comes into contact with a stored item, and the stored part is frozen by the contact portion contacting the stored item,
A freezing device comprising a stirring means for stirring the antifreeze liquid from the outside of the antifreeze liquid container.

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