JP6607745B2 - refrigerator - Google Patents

Description

  Embodiments of the present invention relate to refrigerators.

  2. Description of the Related Art Conventionally, there is a refrigerator in which a chilled room for storing meat, fish, and the like is provided in a refrigerated room, and upper and lower upper and lower containers are arranged in the chilled room so as to be freely drawn out.

  When cooling the inside of the upper container and the lower container that are stacked in such a manner, a vent hole communicating with the lower container is provided on the bottom surface of the upper container, and either the upper container or the lower container is cooled. The inside of one container is cooled by introducing cold air generated by the vessel, and the inside of the other container is cooled by introducing cold air from one container to the other through the vent hole.

JP 2001-330361 A JP 2003-329362 A JP 2009-47384 A

  However, in the case where a vent hole is provided on the bottom surface of the upper container, if the stored item stored in the upper container blocks the vent hole, the cold air does not flow between the upper and lower containers via the vent hole, and the cool air is not introduced. The inside of the container is not cooled.

  Therefore, an object of the present embodiment is to provide a refrigerator that can cool the inside of a container that is provided one above the other even when stored items are stored in the upper container.

The refrigerator of the present embodiment is the same as the upper container, a storage chamber provided in the heat insulation box, a cooler that generates cold air, an upper container that is disposed in the storage chamber and can be pulled forward. A lower container disposed in the storage chamber below the upper container and provided so as to be able to be pulled forward; a cold storage member provided between the storage space of the upper container and the storage space of the lower container; the provided, comprising a vertical partition wall for partitioning the space up and down between the upper container and the lower container, the cold accumulation member to the vertical partition wall is shall be provided.

It is sectional drawing of the refrigerator which concerns on 1st Embodiment of this invention. It is a principal part enlarged view of FIG. It is a figure which shows the refrigerating cycle of the refrigerator of FIG. It is a principal part expanded sectional view of the refrigerator which concerns on 2nd Embodiment of this invention.

(First embodiment)
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The refrigerator 1 which concerns on this embodiment is provided with the heat insulation box 2 opened to the front, as shown in FIG. The heat insulation box 2 is configured by including a heat insulating material such as a vacuum heat insulating material or a foam heat insulating material in a heat insulating space 7 formed between an outer box 4 made of steel plate and an inner box 6 made of synthetic resin. . The heat insulation box 2 is provided with a plurality of storage spaces inside the inner box 6, specifically, a refrigerating room 10 and a vegetable room 12 are provided in order from the upper stage, and an ice making room 14 and a small freezer are provided below. Chambers (not shown) are provided side by side, and a freezing chamber 18 is provided below them.

  The refrigerator compartment 10 and the vegetable compartment 12 are both storage compartments that are cooled to a refrigeration temperature zone (for example, 1 to 4 ° C.), and are partitioned vertically by a synthetic resin partition plate 13. . The front opening of the refrigerator compartment 10 is provided with a rotary heat insulating door 10a pivotally supported by a hinge.

  The inside of the refrigerator compartment 10 is divided into a plurality of stages in the vertical direction by a plurality of shelf boards 11. Between a partition plate 13 constituting the bottom of the refrigerator compartment 10 and the bottom shelf 11a, a water storage tank (not shown) for storing ice making water supplied to an automatic ice making machine provided in the ice making chamber 14 A chilled chamber 40 set to a temperature (for example, 0 to 1 ° C.) lower than the set temperature of the refrigerator compartment 10 is provided side by side.

  A drawer-type heat insulating door 12 a is provided at the front opening of the vegetable compartment 12. An upper and lower two-stage storage case 20 constituting a storage container is connected to the back surface of the heat insulating door 12a.

  The ice making room 14, the small freezing room, and the freezing room 18 are all storage rooms cooled to a freezing temperature zone (for example, −10 to −20 ° C.), and are the vegetable room 12, the ice making room 14, and the small freezing room. The space is partitioned vertically by a heat insulating partition wall 22 provided with a heat insulating material inside.

  Draw-type heat insulation doors 14a and 18a are provided at the front openings of the ice making chamber 14, the small freezer compartment, and the freezer compartment 18, and storage containers 24 and 28 are connected to the rear portions of the heat insulation doors 14a and 18a. ing.

  In the back of the storage space (the refrigeration room 10 and the vegetable room 12) of the refrigeration temperature zone of the heat insulation box 2, the refrigeration cooler room 30 for storing the refrigeration cooler 52 and the refrigeration fan 53, the refrigeration room 10 and the refrigeration cooling. A duct 32 connecting the chamber 30 is formed.

  At the back of the freezing temperature zone storage space (ice-making room 14, small freezing room, freezing room 18) of the heat insulating box 2, a freezing cooler room 34 for storing the freezing cooler 54 and the freezing fan 55, and the freezing temperature A duct 36 is provided to connect the band storage space and the refrigeration cooler chamber 34.

  The refrigeration cooler 52 and the refrigeration cooler 54 constitute a refrigeration cycle 50 together with a compressor 56 and a condenser 58 housed in a machine room 38 formed at the lower back of the heat insulating box 2. As shown in FIG. 3, the refrigeration cycle 50 includes a compressor 56 that discharges a high-temperature and high-pressure gaseous refrigerant, a condenser 58 that receives the gaseous refrigerant discharged from the compressor 56 and liquefies heat, and a condenser A switching valve 60 provided on the outlet side of the cooler 58 for switching the refrigerant flow path, a refrigeration cooler 52 and a refrigeration cooler 54, a refrigeration decompression device 62 and a refrigeration as a throttle means for the coolers 52 and 54. The pressure reducing device 64 and the check valve 66 are connected to each other by a refrigerant pipe, whereby the refrigerant discharged from the compressor 56 is circulated to cool the refrigeration cooler 52 and the refrigeration cooler 54.

  The refrigeration cooler 52 cools the air in the refrigeration cooler chamber 30 and cools air having a temperature lower than the melting point of the cool storage agent 72 provided in the cool storage member 70 described later, for example, cool air of −10 to −20 ° C. Is supplied to the refrigerator compartment 10 and the chilled compartment 40 from the outlet 33 through the duct 32 by the rotation of the refrigerator fan 53, and the storage compartments 10 and 40 are cooled. Part of the air that has flowed through the refrigerated chamber 10 and the chilled chamber 40 flows into the return duct 31 from the suction port 25 provided at the lower back of the chilled chamber 40 and returns to the refrigerated cooler chamber 30. After flowing into the vegetable compartment 12 through a through hole (not shown) provided in the bottom of the vegetable compartment 12, the vegetable compartment 12 is cooled and then flows into the return duct 31 from the suction port 26 provided on the back of the vegetable compartment 12 and returns to the refrigeration cooler compartment 30.

  The refrigeration cooler 54 cools the air in the refrigeration cooler chamber 34 to generate, for example, cold air of −20 to −30 ° C., and this is rotated by the rotation of the refrigeration fan 55 through the duct 36 and the small ice making chamber 14. It is supplied to the freezer compartment and the freezer compartment 18 and flows while cooling these storage compartments, and returns to the freezer cooler 54 from the suction port (not shown) provided on the back surface of the freezer compartment 18 to be cooled.

  In the refrigerator 1 having such a configuration, a space partitioned in the refrigerator compartment 10 by the lowermost shelf plate 11a and the partition plate 13 provided below the shelf plate 11a is moved toward one side in the width direction and ice making (not shown). A tank chamber for storing a tank is partitioned, and a chilled chamber 40 for storing an upper container 42 and a lower container 44 provided in a vertically stacked manner on the other side in the width direction is partitioned.

  The lowermost shelf 11a constitutes the ceiling wall of the chilled chamber 40. In this example, as shown in FIG. 2, a heat insulating molded body 11a1 in which a heat insulating material such as styrene foam is molded into a predetermined shape, and a cosmetic covering the upper surface thereof. It consists of board 11a2, and the upper surface of the chilled chamber 40 is covered with the heat insulation molding 11a1. A lid body 46 that is rotatably provided by a hinge 46a is suspended from the front end portion of the lowermost shelf 11a.

  The upper container 42 is made of a synthetic resin container opened on the upper surface having a substantially rectangular planar shape, and a storage space for storing a stored item such as food is formed therein. At the front end portion of the upper container 42, an upper handle portion 421 which is depressed upward and a hand can be inserted from below is formed. On the outside of the left and right side surfaces of the upper container 42, rails 422 are formed that slide in a front-rear direction on a rail receiving portion (not shown) provided in the chilled chamber 40.

  Above the front end of the upper container 42, an opening is formed between the shelf 11 a and the lower surface of the front end, and the opening is closed by a lid 46. The left and right side surfaces of the upper container 42 are formed with bulging portions 423 that bulge upward as they go from the front to the center.

  Such an upper container 42 is slid on the rail receiving part from the state accommodated in the chilled chamber 40 and pulled forward, and storage items such as food are taken in and out from the upper surface opening of the upper container 42. ing. At that time, the bulging portion 423 pushes the lid 46 forward.

  The bottom surface 424 of the upper container 42 is detachably provided with the cold storage member 70, and a storage space for storing stored items is formed above the cold storage member 70. The bottom surface 424 of the upper container 42 covers the upper part of the storage space of the lower container 44 provided below the upper container 42 and constitutes the ceiling surface of the lower container 44. In this example, a plurality of through holes 425 are formed in the bottom surface 424 of the upper container 42, and the cold storage member 70 placed on the bottom surface 424 is provided so as to close the through hole 425, thereby allowing the cold storage member 70 to pass therethrough. It faces the storage space of the lower container 44 through the hole 425.

  The cold storage member 70 includes a cold storage agent 72 made of a mixture with a large melting latent heat, a bag-shaped cold storage container 74 formed of a film material such as a resin form, and heat transfer provided in contact with the cold storage container 74 so as to be able to exchange heat. Part 76.

  The regenerator 72 is composed of a mixture of water, inorganic salt, food additives, etc., and the melting point is set to a temperature lower than the set temperature of the chilled chamber 40 (for example, 0 ° C.) by adjusting the mixing ratio. Yes. The cool storage agent 72 is accommodated in a bag-shaped cool storage container 74 and is formed in a substantially flat plate shape, and is detachably provided on the bottom surface 424 of the upper container 42.

  The heat transfer unit 76 is made of a plate-like body formed of a material (for example, a metal plate such as an aluminum plate) having a higher thermal conductivity than the cool storage container 74 that stores the cool storage agent 72, and the cool storage container that stores the cool storage agent 72. 74 is provided over almost the entire bottom surface 424 of the upper container 42 in contact with the upper surface of the upper container 42, and constitutes a mounting surface on which stored items stored in the upper container 42 are mounted.

  Behind the upper container 42, a blower outlet 33 a provided at the lowermost part of the blower outlet 33 opens. In this example, the air outlet 33 a is provided at a position above the upper surface opening of the upper container 42, and can be opened and closed by a damper 37. The cold air generated in the refrigerated cooler chamber 30 is blown out from the outlet 33a and introduced into the inside through the upper surface opening of the upper container 42. The cold air introduced into the upper container 42 is discharged to the outside of the upper container 42 through the exhaust hole 426 provided on the back surface of the upper container 42, and flows into the return duct 31 from the suction port 25 provided at the lower back of the chilled chamber 40. Return to refrigerated cooler chamber 30.

  The lower container 44 is made of a synthetic resin container opened on the upper surface having a substantially rectangular planar shape, and a storage space for storing a stored item such as food is formed therein. At the front end portion of the lower container 44, a lower handle portion 441 that is depressed downward and allows a hand to be inserted from above is formed.

  In this example, in the state where the lower container 44 is housed in the chilled chamber 40, the opening on the upper surface is closed by the bottom surface 424 of the upper container 42 provided above, and the lower container 44 is blown out from the outlet 33 to the refrigerator compartment 10. The cool air is prevented from being introduced into the lower container 44.

  In addition, rails 442 are formed outside the left and right side surfaces of the lower container 44 so as to slide in a front-rear direction on a rail receiving portion (not shown) provided in the chilled chamber 40. As a result, the lower container 44 is slid on the rail receiving portion from the state where the lower container 44 is housed in the chilled chamber 40 and the upper surface opening is closed by the bottom surface 424 of the upper container 42, and is drawn forward from the bottom surface 424 of the upper container 42. The stored items such as food are taken in and out from the upper surface opening of the upper container 42.

  In the refrigerator 1 having the above-described configuration, the refrigerator 56 is operated while the refrigerant flows through the refrigeration cooler 52 by controlling the compressor 56, the switching valve 60, the refrigeration fan 53 and the refrigeration fan 55. And the refrigeration mode for cooling the vegetable compartment 12 and the refrigeration mode for cooling the ice making chamber 14, the small freezer compartment, and the freezer compartment 18 by operating the freezing fan 55 while flowing the refrigerant to the freezer cooler 54 side. To do.

  In the refrigeration mode, cold air blows out from the outlet 33 to the refrigeration chamber 10 and flows while cooling the inside of the refrigeration chamber 10, and a part of the cold air that has cooled the refrigeration chamber 10 is formed between the lower container 44 and the partition plate 13. The flow path 27 flows from the front to the rear, flows into the return duct 31 from the suction port 25 provided at the lower back of the chilled chamber 40, and returns to the refrigeration cooler chamber 30 (see FIG. 2). At that time, the lower container 44 is indirectly cooled from the outside of the lower container 44 by the cold air flowing through the flow path 27.

  The upper container 42 is cooled by opening the damper 37 of the air outlet 33a provided behind the chilled chamber 40 during execution of the refrigeration mode.

  Specifically, the cold air generated by the refrigeration cooler 52 is blown by the operation of the refrigeration fan 53 and blows forward from the outlet 33a to the upper container 42 as shown by arrows in FIGS. Flows in.

  The cool air blown out from the outlet 33 a flows forward while cooling the inside of the upper container 42, hits the front surface of the upper container 42 and the lid 46, changes the direction downward, and is then stored in the cold storage provided on the bottom surface 424 of the upper container 42. The heat flows directly to the heat transfer section 76 of the member 70 and flows backward while cooling.

  Thereby, the heat transfer part 76 transmits the cold heat obtained by directly exchanging heat with the cold air blown from the blower outlet 33 a to the cold storage agent 72 provided on the lower surface of the heat transfer part 76, and cools the cold storage agent 72. Since the cold air generated in the refrigeration cooler 52 is cooled to a temperature lower than the melting point of the regenerator 72, the regenerator 72 solidifies and stores the cold energy.

  The cool air that flows backward while cooling the heat transfer section 76 is discharged to the outside of the upper container 42 from the exhaust hole 426 provided on the back surface of the upper container 42, and is provided at the lower back surface of the chilled chamber 40. It flows into the return duct 31 from the suction port 25 and returns to the refrigeration cooler chamber 30.

  Further, the upper container 42 and the lower container 44 provided in the chilled chamber 40 are cooled by the cool storage member 70 provided on the bottom surface 424 of the upper container 42 in addition to the cold air blown out from the outlets 33 and 33a. It has become.

  Specifically, when the internal temperature of the upper container 42 or the upper container 44 becomes higher than the melting point of the regenerator 72 provided in the regenerator member 70 by stopping the refrigerating mode or opening the refrigerating room door 10a, the regenerator 72 The inside of the upper container 42 and the lower container 44 is cooled by the latent heat generated at that time.

  On the other hand, when the cold air cooled by the refrigeration cooler 52 is excessively introduced into the upper container 42 and the temperature in the upper container 42 becomes lower than the melting point of the regenerator 72, the regenerator 72 absorbs heat from the upper container 42, The overcooling in the upper container 42 is suppressed.

  As described above, in the refrigerator 1 of the present embodiment, the cold storage member 70 provided between the storage space formed in the upper container 42 and the storage space formed in the lower container 44 cools the inside of the lower container 44. Therefore, the cooling of the lower container 44 is not hindered by the stored items stored in the upper container 42.

  Moreover, in this embodiment, since the heat-transfer part 76 formed with the material whose heat conductivity is higher than the cool storage container 74 which accommodated the cool storage agent 72 is provided in the contact state with the cool storage container 74, it blows out from the blower outlet 33a. The cool air and heat exchange are promoted, and the regenerator 72 can be efficiently cooled.

  Further, the lower container 44 can be indirectly cooled from the outside of the lower container 44 by the cold air flowing through the refrigerating chamber 10 or the cold storage member 70 provided in the upper container 42 without introducing cold air inside. The lower container 44 can be kept at a desired temperature while suppressing temperature fluctuation.

  Moreover, since the cold storage member 70 placed on the bottom surface 424 of the upper container 42 is opposed to the upper surface opening of the lower container 44 through the through hole 425 provided in the bottom surface 424, the cold storage member 70 is generated. It becomes easy to transmit cold heat to the lower container 44, and the lower container 44 can be quickly cooled to a desired temperature.

  In this embodiment, since the cool storage member 70 is detachably provided on the upper container 42, the cool storage member 70 can be removed and the upper container 42 can be widely used, and usability can be improved.

  In this embodiment, since the lowermost shelf 11a constituting the ceiling wall of the chilled chamber 40 has the heat insulating molded body 11a1 made of a heat insulating material, the refrigerator compartment 10 set at a higher temperature than the chilled chamber 40. It is possible to suppress the leakage of cold heat from the chilled chamber 40.

  Further, when the refrigeration fan 53 is operated in a state where the refrigerant supply to the refrigeration cooler 52 is stopped in order to perform the defrosting operation of the refrigeration cooler 52, air having a temperature higher than the set temperature of the chilled chamber 40 than the refrigeration fan 53. However, in this embodiment, since the damper 37 is provided at the outlet 33a, air having a temperature higher than the melting point of the regenerator 72 is not blown into the upper container 42. The temperatures in the upper container 42 and the lower container 44 will not rise carelessly.

(Modification 1)
In the refrigerator 1 of the first embodiment described above, the cool air blown from the outlet 33 a flows while cooling the inside of the upper container 42, and then heat exchanges with the heat transfer unit 76 to cool the cold storage member 70. However, the cooling air cooled by the refrigeration cooler 52 is configured to be blown out from the blower outlet 33a toward the cold storage member 70, or refrigerated from the blowout outlet provided separately from the blower outlet 33a toward the cold storage member 70. You may comprise so that the cold air cooled with the cooler 52 may be blown off. In such a case, the cold storage member 70 is heat-exchanged with low-temperature cold air immediately after being cooled by the refrigeration cooler 52, and the cold storage agent 72 has a melting point set to a temperature lower than the set temperature of the chilled chamber 40. Can be solidified in a short time.

(Modification 2)
In the refrigerator 1 of the first embodiment described above, the refrigeration fan 53 blows the cold air generated by the refrigeration cooler 52 to the refrigeration chamber 10 through the duct 32 and transmits the cold storage member 70 provided in the upper container 42. Although the air is also blown to the heat section 76, a fan separate from the refrigeration fan 53 may be provided, and the cool air generated by the refrigeration cooler 52 by the fan may be blown to the cold storage member 70. The refrigeration fan 53 that blows air to the refrigeration chamber 10 blows the cold air generated by the refrigeration cooler 52 to the heat transfer section 76 of the cold storage member 70, thereby generating the cold air generated by the refrigeration cooler 52. Can be concentrated in the cooling of the cold storage member 70 to condense the cold storage agent 72 in a short time, or the upper container 42 and the lower container 44 provided in the chilled chamber 40 can be cooled independently of the refrigerator compartment 10.

(Modification 3)
In the refrigerator 1 of the first embodiment described above, by providing the cold storage member 70 on the bottom surface 424 of the upper container 42, the storage space formed inside the upper container 42 and the storage space formed inside the lower container 44 are separated. The cold storage member 70 is provided between them, but in addition to this, for example, the cold storage member is provided on the bottom shelf 11a so as to face the upper surface opening of the upper container 42, or opposed to the bottom surface of the lower container 44. Thus, a cold storage member may be provided on the partition plate 13, or a cold storage member may be attached to the back surfaces of the upper container 42 and the lower container 44. In such a case, the installation area of the cool storage member 70 for cooling the upper container 42 and the lower container 44 can be expanded, and the inside is further cooled to a desired temperature while suppressing temperature fluctuations of the upper container 42 and the lower container 44. can do.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG.

  In the first embodiment described above, the case where the cold storage member 70 is provided on the bottom surface 424 of the upper container 42 has been described. However, in the present embodiment, the upper and lower partition walls 77 provided between the upper container 42 and the lower container 44 are provided. A cold storage member 70 is provided.

  As shown in FIG. 4, an upper and lower partition wall 77 is provided between the upper container 42 and the lower container 44 to divide the space vertically, and the space between the upper and lower partition walls 77 and the lowermost shelf 11a is provided. The upper container 42 is accommodated in the space formed in the above, and the lower container 44 is accommodated in the space formed between the upper and lower partition walls 77 and the partition plate 13. The upper and lower partition walls 77 include a cold storage member 70 and a cover body 771 that covers the periphery thereof, and the cover body 771 is fixed to the chilled chamber 40.

  A plurality of through holes 772 are formed in the cover body 771 that covers the lower side of the cold storage member 70, and faces the storage space of the cold storage member 70 and the lower container 44 through the through holes 772.

  In this embodiment, the cold storage member 70 is provided on the upper and lower partition walls 77, and the cold storage member 70 remains in the chilled chamber 40 even if the upper container 42 is pulled forward from the chilled chamber 40. As a result, the pulling-out operation does not become heavy and the usability can be improved.

  Other configurations and operational effects are the same as those of the first embodiment described above, and detailed description thereof is omitted.

(Other embodiments)
As mentioned above, although embodiment of this invention was described, these embodiment was shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and modifications thereof are included in the invention described in the claims and equivalents thereof as well as included in the scope and gist of the invention.

DESCRIPTION OF SYMBOLS 1 ... Refrigerator, 2 ... Thermal insulation box, 10 ... Cold room, 11 ... Shelf board, 11a ... Decorative plate, 111 ... Thermal insulation molding, 112 ... Shelf board, 12 ... Vegetable room, 25 ... Suction port, 26 ... Suction port , 27 ... flow path, 30 ... refrigeration cooler room, 31 ... return duct, 32 ... duct, 33 ... blower outlet, 33a ... blower outlet, 40 ... chilled chamber, 42 ... upper container, 421 ... upper handle, 422 ... Rails, 422 ... bulging part, 424 ... bottom surface, 425 ... through hole, 426 ... exhaust hole, 44 ... lower container, 46 ... lid, 46a ... hinge, 441 ... lower handle, 442 ... rail, 50 ... refrigeration cycle 52 ... Refrigeration cooler, 53 ... Refrigeration fan, 54 ... Refrigeration cooler, 55 ... Refrigeration fan, 70 ... Cold storage member, 72 ... Cold storage agent, 74 ... Cold storage container, 76 ... Heat transfer part, 771 ... Cover body, 772 ... through hole

Claims (5)

A storage chamber provided in the heat insulation box, a cooler for generating cold air, an upper container disposed in the storage chamber and provided so as to be able to be drawn forward, and the upper container in the same storage chamber as the upper container A lower container that is disposed below and disposed so as to be able to be drawn forward, and a cold storage member provided between the storage space of the upper container and the storage space of the lower container ,
Vertical partition comprises a wall, a refrigerator that has said regenerative bed is provided in the vertical partition wall for partitioning the space up and down between the upper container and the lower container. A storage chamber provided in the heat insulation box, a cooler for generating cold air, an upper container disposed in the storage chamber and provided so as to be able to be drawn forward, and the upper container in the same storage chamber as the upper container A lower container that is disposed below and disposed so as to be able to be drawn forward, and a cold storage member provided between the storage space of the upper container and the storage space of the lower container ,
At least one of the upper container and the lower container is a refrigerator in which cold air is not introduced therein but is cooled from the outside of the container by cold air generated by the cooler. The cold storage member is made of a cold storage agent whose melting point is set to a temperature lower than the lower limit value of the set temperature of the storage chamber, a cold storage container that stores the cold storage agent, and a material having higher thermal conductivity than the cold storage container. The refrigerator of Claim 1 or 2 provided with the heat-transfer part provided in contact with the upper surface of a cool storage container. A support surface that supports the lower surface of the cold storage member above the storage space of the lower container; and a through hole formed in the support surface;
The refrigerator according to any one of claims 1 to 3 , wherein the cold storage member faces an upper surface of a storage space provided in the lower container through the through hole. The refrigerator of any one of Claims 1-4 provided with the blower outlet which blows off the cool air produced | generated with the said cooler toward the said cool storage member.

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