WO2010024078A1 - 冷蔵庫 - Google Patents

冷蔵庫 Download PDF

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Publication number
WO2010024078A1
WO2010024078A1 PCT/JP2009/063383 JP2009063383W WO2010024078A1 WO 2010024078 A1 WO2010024078 A1 WO 2010024078A1 JP 2009063383 W JP2009063383 W JP 2009063383W WO 2010024078 A1 WO2010024078 A1 WO 2010024078A1
Authority
WO
WIPO (PCT)
Prior art keywords
storage chamber
cold air
passage
circulation passage
cooler
Prior art date
Application number
PCT/JP2009/063383
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
善一 井上
弘誉 藤岡
博美 森元
遥 青山
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2008222518A external-priority patent/JP5297723B2/ja
Priority claimed from JP2008221723A external-priority patent/JP5180009B2/ja
Priority claimed from JP2008222209A external-priority patent/JP5319210B2/ja
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to CN2009801334971A priority Critical patent/CN102132115B/zh
Priority to KR1020117004479A priority patent/KR101258752B1/ko
Publication of WO2010024078A1 publication Critical patent/WO2010024078A1/ja

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D25/00—Charging, supporting, and discharging the articles to be cooled
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/04—Treating air flowing to refrigeration compartments
    • F25D2317/041—Treating air flowing to refrigeration compartments by purification
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/065—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return
    • F25D2317/0655—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air return through the top
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0665—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the top

Definitions

  • the present invention relates to a refrigerator.
  • Patent Document 1 A conventional refrigerator is disclosed in Patent Document 1.
  • a cold air passage branching left and right is provided on the back of the refrigerator compartment, and a circulation passage is arranged between the left and right cold air passages.
  • the cool air passage is provided with a cool air discharge port that opens to both the outer side and the center side, and the cool air is discharged from the discharge port toward the outer side and the circulation passage side.
  • a plurality of suction ports arranged vertically are provided in front of the circulation passage.
  • An ion generating unit having an ion generating device is disposed above the circulation passage in the upper part of the refrigerator compartment.
  • the ion generation unit is provided with an opening communicating with the circulation passage on the lower surface of the rear portion, and opens a discharge port in the front.
  • a circulation fan is provided in the ion generation unit, and an ion generator is disposed on the downstream side of the circulation fan.
  • the cold air in the refrigerator compartment is taken into the circulation passage from the suction port by the driving of the circulation blower and discharged from the discharge port of the ion generation unit. Thereby, the cold air in the refrigerator compartment circulates.
  • the ion generator includes first and second electrodes that generate positive ions and negative ions, respectively. Ions generated from the first and second electrodes are included in the cold air taken from the suction port. Then, the floating bacteria in the refrigerator compartment are sterilized by positive ions and negative ions blown out together with the cold air from the discharge port of the ion generation unit.
  • Patent Document 2 discloses a refrigerator in which a cool air passage through which cool air from a cooler that generates cool air flows is arranged on the back of the refrigerator compartment.
  • the cold air passage branches left and right, rises in the ascending passage, descends in the descending passage, and discharges cold air from the first discharge ports arranged at the left and right ends of the back of the refrigerator compartment.
  • a return port through which cool air returning to the cooler passes is provided in the lower right part of the refrigerator compartment.
  • a circulation passage having a circulation fan is provided between the rising passages of the cold air passage branched to the left and right.
  • a suction port is provided below the circulation passage to suck in the cold air in the refrigerator compartment by a circulation fan.
  • a plurality of second discharge ports for discharging cool air are provided side by side in the vertical direction on the side wall of the circulation passage.
  • the cold air generated by the cooler flows through the descending passage through the ascending passage of the cold air passage, and is discharged from the first discharge ports at both ends in the left-right direction.
  • the cold air discharged from the first discharge port circulates in the refrigerator compartment, and flows out of the refrigerator compartment through a return port arranged at the lower right. Moreover, a part of cold air circulates in the approximate center of the refrigerator compartment and is sucked into the circulation passage from the lower suction port. Cold air flowing through the circulation passage is discharged from the second discharge port.
  • the cold air discharged from the second discharge port flows out from the return port, and a part thereof is led from the suction port to the circulation passage. Accordingly, the cold air in the lower part of the refrigerator compartment and the cold air in the upper part can be circulated to make the room temperature uniform.
  • JP 2007-170781 pages 5 to 13 and FIG. 2
  • Japanese Patent Laid-Open No. 9-42820 pages 3-4, FIG. 1
  • the circulation passage and the ion generation unit are arranged between the left and right cold air passages, and a plurality of suction ports arranged vertically are provided in front of the circulation passage.
  • a discharge port is provided in front of the ion generation unit.
  • the first and second electrodes are arranged close to each other in order to introduce the positive ions and the negative ions to the respective positions in the refrigerator compartment, the positive ions and the negative ions collide immediately after the generation. Accordingly, there is a problem that the number of ions that disappear is increased, the number of ions discharged from the discharge port is decreased, and the sterilization performance becomes lower.
  • the amount of ions ejected from the ejection port increases.
  • one end of the refrigerator has more negative ions but fewer positive ions, and the other end has more positive ions but fewer negative ions. That is, the distribution of each ion becomes non-uniform, and sterilization corresponding to the smaller ion is performed at each position in the refrigerator compartment. Therefore, a sufficient amount of positive ions and a sufficient amount of negative ions cannot be supplied to the entire refrigerator compartment, resulting in a problem that the sterilization performance is lowered.
  • the cold air discharged from the first discharge ports arranged at both ends in the left-right direction comes into contact with the stored item while reaching the return port arranged in the lower right part and the suction port arranged in the approximate center. Since the cold air flowing through the cold air passage is dried by the cooler, there is a problem that the drying of the stored material in contact with the cold air discharged from the first discharge port is promoted.
  • This invention aims at providing the refrigerator which can improve disinfection performance. Moreover, an object of this invention is to provide the refrigerator which can improve ventilation efficiency and cooling efficiency. Moreover, an object of this invention is to provide the refrigerator which can reduce the drying of stored goods.
  • the present invention provides a storage chamber for storing stored items, a back plate covering the left and right sides of the storage chamber, a cooler for generating cool air, and the cool air generated by the cooler circulating. Then, a cool air passage for sending cool air to the storage chamber through a first discharge port provided in the upper part of the storage chamber, and a circulation in which the cool air in the storage chamber circulates without passing through the cooler having a circulation blower It has a passage and an ion generating device arranged in the circulation passage, and the cold passage and the circulation passage are arranged on the right and left behind the back plate of the store room.
  • the cold air generated by the cooler flows through the cold air passage and is discharged from the first discharge port.
  • the cool air discharged from the first discharge port flows through the storage chamber and cools the storage chamber.
  • the wet cool air in the storage chamber flows into the circulation passage and circulates through the circulation passage without passing through the cooler.
  • the cold air flowing through the circulation passage contains ions generated from the ion generator and is discharged into the storage chamber. Since the circulation passage is disposed to the left and right behind the back plate, a discharge port or a suction port can be provided in a wide range on the back surface, and ions are distributed in the storage chamber.
  • the present invention provides the refrigerator having the above-described configuration, wherein the circulation passage is open to the back surface portion disposed on the back surface of the storage chamber, the top surface portion disposed on the top surface of the storage chamber, and the back surface portion.
  • a first suction port disposed at both ends in the left-right direction at a lower portion of the storage chamber, and a second discharge port disposed at a front portion of the top surface portion and disposed at a central portion in the left-right direction of the storage chamber. It is characterized by having.
  • wet cold air in the storage chamber is sucked into the circulation passage from the first suction ports arranged on the left and right ends of the lower portion of the storage chamber.
  • Cold air containing ions is discharged together with the cold air from the second discharge port arranged in the center of the top surface of the storage chamber, and is guided to the first suction ports at the left and right ends of the lower part.
  • the present invention is characterized in that, in the refrigerator having the above-described configuration, a second suction port is provided on the suction side of the circulation fan of the top surface portion. According to this configuration, the cool air in the upper part of the storage chamber is sucked into the circulation passage from the second suction port.
  • the present invention is characterized in that, in the refrigerator having the above-described configuration, the cold air passage and the circulation passage are arranged so as to overlap each other, and the first discharge ports are arranged at both ends in the left-right direction. According to this configuration, the cool air cooled by the cooler is discharged from the first discharge ports at the left and right ends of the upper portion of the storage chamber, and is sucked from the first suction ports at the lower left and right ends. Thereby, the dry cold which contacts a stored material directly from a 1st discharge outlet is reduced.
  • a plurality of upper and lower stages are provided on a loading shelf on which a stored item is placed and arranged in a plurality of levels above and below, and a door that opens and closes the storage chamber.
  • a door pocket, and cool air is discharged from the second discharge port between the shelf and the door pocket.
  • cold air and ions discharged from the second discharge port are supplied to the door pocket.
  • cold air and ions descend between the door pocket and the mounting shelf, flow backward on each mounting shelf, and are guided to the first suction port.
  • the ion generator is configured such that the first electrode that generates positive ions and the second electrode that generates negative ions are arranged apart from each other in a direction intersecting a flow direction of the cold air, A mixing plate for restricting the flow path of the circulation passage is provided on the downstream side of the ion generating device, and the flow path on the downstream side of the mixing plate is widened.
  • the cool air flowing through the circulation passage includes positive ions and negative ions generated from the first and second electrodes of the ion generator, respectively.
  • the ions are combined with cold water molecules flowing through the circulation passage to be clustered to form positive and negative cluster ions.
  • the flow path is narrowed by the mixing plate, and the cold air passing over the first and second electrodes is mixed. Thereby, positive and negative cluster ions are mixed.
  • the mixed positive ions and negative ions spread on the downstream side of the mixing plate and are discharged into the storage chamber.
  • the present invention is characterized in that, in the refrigerator configured as described above, the interval between the first and second electrodes is set to 100 mm or more.
  • the present invention is characterized in that, in the refrigerator having the above-described configuration, the flow path width squeezed by the mixing plate is substantially equal to the widths of the first and second electrodes.
  • the present invention also includes a storage chamber for storing stored items, a cooler for generating cold air, a cool air passage provided on the back of the storage chamber through which the cool air generated by the cooler flows, and an upper portion of the cool air passage
  • the first discharge port disposed at both ends of the storage chamber in the left-right direction and the cool air that is provided at the lower portion of the storage chamber and returns to the cooler flows out of the storage chamber.
  • a return port a circulation passage that is provided so as to overlap in the front-rear direction of the cold air passage and through which the cold air in the storage chamber circulates without passing through the cooler, and that opens into the circulation passage and sucks cold air from the storage chamber
  • a first suction port arranged at both ends in the left-right direction at the lower part of the storage chamber, and a second discharge opening at the center of the left-right direction at the upper part of the storage chamber while discharging cool air by opening the circulation passage.
  • the outlet and the circulation passage It is characterized by comprising an ion generating device that generates positive and negative ions are.
  • the cold air generated by the cooler flows through the cold air passage and is discharged from the first discharge ports provided at the left and right ends of the back of the storage chamber.
  • the cool air discharged from the first discharge port descends in the storage chamber, mixes with the wet cool air in the storage chamber from the first suction ports arranged at both ends, and is sucked into the circulation passage.
  • the cold air sucked into the circulation passage flows through the circulation passage without passing through the cooler.
  • the cool air flowing through the circulation path includes positive ions and negative ions generated by the ion generator.
  • the ions are combined with cold water molecules flowing through the circulation passage to be clustered, and positive and negative cluster ions are discharged together with the cold air from the second discharge port arranged at the upper center of the storage chamber.
  • Cold air and cluster ions discharged from the second discharge port are guided to the first suction ports at both lower ends, and the ions and wet cold air circulate throughout the storage chamber. Further, the cool air in the storage chamber flows out from the lower return port according to the amount of cool air supplied from the cool air passage and returns to the cooler.
  • the present invention is characterized in that, in the refrigerator configured as described above, the cold air passage and the circulation passage are integrally formed of a heat insulating material.
  • the duct of the cold air passage and the circulation passage is formed by integral molding of polystyrene foam or the like.
  • the present invention provides a mounting shelf on which stored items are placed, and the first discharge port and the first suction port are communicated between the back wall of the storage chamber and the mounting shelf. It is characterized by the formation of gaps. According to this configuration, the cool air discharged from the first discharge port descends through the gap provided at the rear of the mounting shelf and is guided to the first suction port.
  • the present invention is characterized in that the first suction port is disposed in the vicinity of the first discharge port in the refrigerator configured as described above.
  • the present invention is characterized in that the refrigerator having the above-described configuration includes a member made of a good heat conductor that forms a front surface of the circulation passage and contacts cold air flowing through the circulation passage.
  • the cold air flowing through the circulation passage is in contact with the member made of the heat good conductor on the front surface, and the cold heat of the cold air is transmitted to the member to cool the member.
  • the cold heat transmitted to the member is released from the front surface of the member to the storage chamber.
  • the outside air flows into the storage chamber by opening and closing the door, the cold air containing the moisture of the outside air comes into contact with the front and back surfaces of the cooled member to condense. Condensation on the surface of the member gradually evaporates and the storage chamber is moisturized. Further, cold air containing moisture due to dew condensation on the back surface of the member is guided to the ion generator, and ions are clustered.
  • the present invention is characterized in that in the refrigerator configured as described above, a second suction port is provided in the circulation passage above the member. According to this configuration, cold air containing moisture due to condensation on the front surface of the member is guided from the second suction port to the ion generation device, and ions are clustered.
  • the present invention is characterized in that the opening area of the second suction port is smaller than the opening area of the first suction port in the refrigerator configured as described above.
  • the present invention is characterized in that, in the refrigerator having the above-described configuration, the front and back surfaces of the member are provided with irregularities by bending. According to this configuration, the member is bent by pressing or drawing to form irregularities. Condensation on the front and back surfaces of the member is received and retained by the surface facing the top of the irregularities when it flows down.
  • the present invention is a storage chamber for storing stored items, a cooler for generating cool air, a cool air passage provided on the back surface of the store chamber and through which cool air generated by the cooler flows upward from below, It opens to the upper part which becomes the termination
  • the cold air generated by the cooler circulates from the lower side to the upper side through the cold air passage at the back of the storage room.
  • path is provided in the right and left of the storage chamber, and the cold air which distribute
  • the cold air discharged from the first discharge port flows through the storage chamber and flows out from the return port. A part of the cool air is led to the suction port and sucked into the circulation passage.
  • the cool air flowing from the lower side to the upper side of the circulation passage is discharged from a second discharge port arranged in the upper part of the storage chamber.
  • the present invention also includes a storage chamber for storing stored items, a cooler for generating cold air, a cool air passage provided on the back of the storage chamber through which the cool air generated by the cooler flows, and an upper portion of the cool air passage
  • the first discharge port disposed at both ends of the storage chamber in the left-right direction and the cool air that is provided at the lower portion of the storage chamber and returns to the cooler flows out of the storage chamber.
  • a return port a circulation passage that is provided so as to overlap in the front-rear direction of the cold air passage and through which the cold air in the storage chamber circulates without passing through the cooler, and a suction port that opens into the circulation passage and sucks cold air from the storage chamber
  • a second discharge port that opens into the circulation passage and discharges cool air, and one of the suction port and the second discharge port is disposed at both ends in the left-right direction of the storage chamber, and the other is Specially opened in the center of the direction. It is set to.
  • the cold air generated by the cooler flows through the cold air passage and is discharged from the first discharge ports provided at the left and right ends of the back of the storage chamber.
  • the cold air discharged from the first discharge port flows through the storage chamber and flows out from the return port.
  • a part of the cool air is led to the suction port and sucked into the circulation passage.
  • Cold air flowing through the circulation passage is discharged from the second discharge port.
  • One of the suction port and the second discharge port is disposed at both ends of the storage chamber in the left-right direction, and the other is disposed at the center. Thereby, the cold air led from the second discharge port to the suction port spreads over the entire storage chamber.
  • the suction ports are arranged at both ends of the storage chamber in the left-right direction, the cold air discharged from the first discharge ports flows through both ends of the back and is guided to the suction ports. Further, when the second discharge ports are arranged at both ends in the left-right direction of the storage chamber, the cool air discharged from the first discharge port mixes with the cool air discharged from the second discharge port and flows through the storage chamber.
  • the present invention is characterized in that, in the refrigerator having the above-described configuration, the suction port is disposed at both left and right ends of the storage chamber, and the suction port is provided below the first discharge port. According to this configuration, the dry cold air discharged from the first discharge port descends at both ends of the back surface, is guided to the suction port, is mixed with the wet cold air in the storage chamber, and is sucked into the circulation passage.
  • the circulation passage includes a top surface portion extending forward and backward through the ceiling surface of the storage chamber, and a second discharge port is provided at a front portion of the top surface portion.
  • the cold air in the circulation passage flows along the ceiling surface of the storage chamber and is discharged from the second discharge port at the front portion of the top surface portion.
  • the cold air discharged from the second discharge port descends and is guided to the rear suction port.
  • the present invention is characterized in that, in the refrigerator configured as described above, a circulation fan is disposed above the circulation passage.
  • the circulation passage is provided to the left and right behind the back plate, one or both of the discharge port and the suction port can be provided in a wide range on the back surface. Therefore, the ions can be distributed in the storage chamber, and the sterilization performance can be improved. Further, since the cool air passage is provided on the left and right behind the back plate, the discharge port (first discharge port) can be provided in a wide range on the back surface. Therefore, the cold air generated by the cooler can be distributed in the storage chamber.
  • the mixing plate is provided to restrict the flow path of the circulation passage on the downstream side of the ion generator.
  • positive ions and negative ions immediately after the generation at the first and second electrodes are provided. Extinction due to collisions can be reduced.
  • the positive ions and the negative ions are mixed by the mixing plate. For this reason, the disappearance of ions is reduced by clustering, and a sufficient amount of positive ions and negative ions can be spread throughout the storage chamber. Therefore, the sterilization performance of the refrigerator can be improved.
  • the cold air passage through which the cold air from the cooler passes and the circulation passage through which the cold air circulates without passing through the cooler are arranged one after the other.
  • the first suction port of the circulation passage can be provided in the lower part of the left and right ends, and the second discharge port can be provided in the upper center part.
  • the cool air in the storage chamber sucked from the first suction port is mixed with the dry cool air discharged from the first discharge port, and is discharged from the second discharge port to circulate through the entire storage chamber. Therefore, it is possible to reduce the amount of dry cold air that comes into direct contact with the stored item, and to reduce the drying of the stored item.
  • the cold air passage disposed on the rear surface of the storage chamber is provided with the first discharge port at the upper portion where the cold air circulates from below to the end of the cold air passage.
  • the circulation passage cold air flows from the lower side to the upper side, and a second discharge port is provided at the upper part of the storage chamber.
  • the cold air passage is not bent in the vertical direction, and the width of the cold air passage and the circulation passage can be widened.
  • the flow passage area can be increased while ensuring a sufficient internal volume without widening the depth of the cold air passage and the circulation passage. Therefore, the air blowing efficiency can be improved, and the internal circulation can be reduced to achieve uniform cooling.
  • the passage length of the cold air passage can be shortened, the release of cold heat to the outside can be reduced, the cooling efficiency can be improved, and the energy can be saved.
  • the first discharge ports are arranged at both ends in the left-right direction on the back surface.
  • One of the second discharge port and the suction port can be provided at both ends in the left-right direction.
  • the front view which shows the refrigerator of embodiment of this invention AA sectional view of FIG. BB sectional view of FIG.
  • FIG. 1 is a front view showing a refrigerator according to an embodiment.
  • 2 and 3 are sectional views taken along lines AA and BB in FIG. 1, respectively.
  • the refrigerator 1 is provided with a refrigerator compartment 2 at the top, and below the refrigerator compartment 2, a temperature switching chamber 3 and an ice making chamber 4 are arranged side by side.
  • a freezing room 6 is arranged below the temperature switching room 3 and the ice making room 4, and a vegetable room 5 is arranged below the freezing room 6.
  • the refrigerator compartment 2 is opened and closed by a rotating door 2a to store the stored items in a refrigerator.
  • the doors 2a are arranged on the left and right with the approximate center of the refrigerator compartment 2 as a boundary, and the left front surface and the right front surface of the refrigerator compartment 2 can be opened independently.
  • the left and right doors 2a are provided with a plurality of door pockets 42 for storing stored items.
  • the vegetable compartment 5 is opened and closed by a drawer-type door 5a integrated with the storage case 5b, and the vegetables are cooled and stored at a higher room temperature (about 8 ° C.) than the refrigerator compartment 2.
  • the temperature switching chamber 3 is opened and closed by a door (not shown), and the room temperature can be switched by the user as will be described in detail later.
  • the freezer compartment 6 is opened and closed by a drawer-type door 6a integrated with the storage case 6b to store the stored items in a frozen state.
  • the ice making chamber 4 is opened and closed by a door 4a integrated with the ice storage container 4b, and communicates with the freezing chamber 6 to make ice.
  • the ice making chamber 4 and the freezing chamber 6 are maintained below the freezing point.
  • a chilled chamber 21, which is an isolation chamber, an accessory storage chamber 102, and a water tank chamber 103 are arranged side by side.
  • the chilled chamber 21 is maintained, for example, in a chilled temperature range (about 0 ° C.), which is a temperature range lower than that in the refrigerator compartment 2.
  • an ice greenhouse maintained at an ice temperature (about ⁇ 3 ° C.) may be provided.
  • a water tank 103a for ice making is detachably stored.
  • the accessory storage chamber 102 is disposed in front of a cold air passage 32, which will be described in detail later, and has an accessory case 102a for storing accessories such as eggs.
  • the main body of the refrigerator 1 is formed by filling a foam heat insulating material 1c between the outer box 1a and the inner box 1b.
  • the ice making chamber 4 and the temperature switching chamber 3 are separated from the refrigerator compartment 2 by a heat insulating wall 7, and the freezer compartment 6 and the vegetable compartment 5 are separated from each other by a heat insulating wall 8. Further, the temperature switching chamber 3 and the freezing chamber 6 are isolated by a heat insulating wall 35, and the temperature switching chamber 3 and the ice making chamber 4 are isolated by a vertical heat insulating wall 36.
  • the insulation walls 7 and 8 are filled simultaneously. That is, the stock solution of the foam heat insulating material 1c is injected simultaneously between the outer box 1a and the inner box 1b and into the heat insulating walls 7 and 8 communicating with the outer box 1a, and is foamed integrally.
  • the foam heat insulating material 1c such as urethane foam heat insulating material
  • the heat insulating walls 7 and 8 can be easily formed thin. Therefore, the internal volume of the refrigerator 1 can be secured widely.
  • the refrigerator compartment 2 is provided with a plurality of placement shelves 41 on which stored items are placed.
  • the mounting shelf 41 is provided in three stages up and down.
  • a machine room 50 is provided behind the vegetable room 5, and a compressor 57 is disposed in the machine room 50.
  • a condenser, an expander (all not shown), and a cooler 11 are connected to the compressor 57 in order, and a refrigerant such as isobutane is circulated by driving the compressor 57 to constitute a refrigeration cycle. Thereby, the cooler 11 becomes the low temperature side of the refrigeration cycle.
  • a cold air passage 31 partitioned by a back plate 6 c is provided behind the freezer compartment 6. As will be described in detail later, the cold air passage 31 communicates with the cold air passage 32 disposed behind the refrigerator compartment 2 via the refrigerator compartment damper 20.
  • the cool air passage 31 is partitioned into a front part 31a and a rear part 31b by a partition plate 31c, and the cooler 11 is arranged in the rear part 31b.
  • the cooler 11 is formed by meandering refrigerant pipes 11a through which refrigerant flows, and left and right ends of the refrigerant pipes 11a are supported by end plates 11b.
  • a large number of fins (not shown) for heat dissipation are provided in contact with the refrigerant pipe 11a.
  • a gas-liquid separator 45 is connected to the upper part of the refrigerant pipe 11a.
  • the cooler 11 on the low temperature side of the refrigeration cycle exchanges heat with the air flowing through the rear portion 31b of the cold air passage 31 to generate cold air. Since the cooler 11 is arranged on the back side of the freezer compartment 6, the cold heat of the cooler 11 is released to the freezer compartment 6 side through the partition plate 31c and the back plate 6c. For this reason, the freezer compartment 6 is cooled efficiently and the cooling efficiency is improved.
  • a defrost heater 33 for defrosting the cooler 11 is provided below the cooler 11. Below the defrost heater 33, a drain pan 63 for receiving water by defrost is provided.
  • the drain pan 63 is provided with a drain pipe 64, and drain water is guided to the evaporation tray (not shown) disposed in the machine room 50 through the drain pipe 64.
  • a freezer compartment fan 12 composed of an axial fan is disposed with the rotational axis direction horizontal.
  • the cold air passage 31 is provided with an opening (not shown) facing the ice making chamber 4 in front of the freezer blower 12 and discharge ports 6d and 6e facing the storage case 6b of the freezer compartment 6.
  • a return port 22 that opens in front of the cooler 11 and returns cool air to the cooler 11.
  • the cooler 11 is arranged in the left-right direction so as to be biased toward the ice making chamber 4, and a communication path 34 that communicates the refrigerator compartment 2 and the vegetable compartment 5 is disposed on the side of the cooler 11. Further, the refrigerator compartment damper 20 and the freezer compartment fan 12 are arranged in the vertical direction so as to be biased in the same direction as the cooler 11. That is, the refrigerator compartment damper 20 and the freezer compartment fan 12 are arranged so as to overlap in the planar projection. Thereby, while the width
  • the vertical heat insulating wall 36 that separates the temperature switching chamber 3 and the ice making chamber 4 is arranged biased to the left side in FIG.
  • the cold air flowing through the cold air passage 31 is, for example, ⁇ 23 ° C., and heat loss increases when the temperature switching chamber 3 is controlled to a temperature higher than the cold air (for example, 3 ° C., 8 ° C., 50 ° C.).
  • the refrigerator compartment damper 20 and the front part 31a of the cold air passage 31 are provided behind the vertical heat insulating wall 36 or on the left side thereof to prevent heat from being released from the temperature switching chamber 3 to the cold air. Thereby, cooling efficiency can be improved more.
  • the temperature switching chamber 3 is connected to an introduction ventilation path 15 that branches from the cold air passage 31 and guides the cold air.
  • a temperature switching chamber blower 18 and a heater 16 are disposed at the rear of the temperature switching chamber 3.
  • a temperature switching chamber discharge damper 37 is provided at the lower left portion of the temperature switching chamber 3. The temperature switching chamber discharge damper 37 is arranged in the introduction ventilation path 15, and the temperature switching chamber blower 18 is arranged in the upper part of the introduction ventilation path 15.
  • the temperature switching chamber discharge damper 37 When the temperature switching chamber discharge damper 37 is opened and the temperature switching chamber blower 18 is driven, cold air flows from the cooler 11 into the temperature switching chamber 3 through the introduction ventilation path 15. The amount of air flowing into the temperature switching chamber 3 from the introduction ventilation path 15 is adjusted by the opening / closing amount of the temperature switching chamber discharge damper 37.
  • the temperature switching chamber 3 may be provided with a panel heater at the bottom.
  • a temperature switching chamber return damper 38 is provided in the lower part of the temperature switching chamber 3.
  • the temperature switching chamber return damper 38 opens and closes the return passage 17 extending downward, and the air in the temperature switching chamber 3 returns to the cool air passage 31 via the return passage 17.
  • the air in the introduction ventilation path 15 and the return path 17 is lower than the air in the temperature switching chamber 3.
  • the air flowing through the return passage 17 is returned to the cooler 11 from an outlet 17a provided in the middle of the cooler 11 in the vertical direction.
  • the cool air flowing out of the freezer compartment 6 through the freezer compartment return port 22 returns to the lower part of the cooler 11.
  • gas returns from the vegetable compartment 5 to the downward direction of the cooler 11 via the return channel
  • the cold air that has flowed through the temperature switching chamber 3 with a small volume is cooled at the upper part of the cooler 11, and the cold air that has flowed through the cold room 3, the vegetable room 5, and the freezer room 6 with a large capacity is Cooled by. Therefore, the cold air flowing out from the temperature switching chamber 3 is not heat exchanged with the cooler 11 more than necessary, and the heat exchange efficiency of the cooler 11 can be improved.
  • FIG. 5 is a cross-sectional view taken along the line CC of FIG.
  • Above the accessory storage chamber 102 of the cold air passage 32 and the circulation passage 81 are integrally formed by a cooling panel 70 disposed on the back surface of the refrigerator compartment 2, and the circulation passage 81 is disposed in front of the cold air passage 32.
  • a vertical passage 81b of a circulation passage 81 to be described later may be juxtaposed at the same position as the cold air passage 32 in the front-rear direction, and a lateral passage 81c to be described later may be arranged in front of the cold air passage 32.
  • the internal volume can be increased.
  • the cooling panel 70 has a rectangular front shape, and is composed of a panel base 71 and a member 72 (back plate).
  • the panel base 71 is formed of a molded product of a heat insulating material such as polystyrene foam, and integrally forms the outer shapes of the cold air passage 32 and the circulation passage 81.
  • the member 72 is disposed on the front surface of the panel base 71, and the front shape is formed in a substantially rectangular shape by covering the back surface of the refrigerating chamber 2 with the heat good conductor such as a metal plate.
  • the material of the member 72 aluminum, stainless steel, copper, brass, plated steel plate, or the like can be selected. It is more desirable that the member 72 is made of aluminum in consideration of thermal conductivity, rust prevention, strength, lightness, price, and the like.
  • the thickness of the member 72 is 0.5 mm to 1 mm. Thereby, while being able to have sufficient livestock cooling performance and heat conductive performance, it is cheap and can obtain high intensity
  • the member 72 forms the front surface of the circulation passage 81, and the cold air flowing through the circulation passage 81 is in contact with the member 72.
  • the cold air passage 32 extends upward from the refrigerator compartment damper 20, and an inflow portion 32 c having a narrow lateral width is provided in the lower part of the refrigerator compartment 2 behind the accessory storage chamber 102.
  • a refrigerator compartment fan 23 is disposed in the inflow portion 32c.
  • the refrigerating room blower 23 is composed of an axial fan, and the cold air is circulated through the cold passage 32 by opening the refrigerating room damper 20 and driving the refrigerating room blower 23.
  • the cold air immediately after flowing into the cold air passage 32 from the cold room damper 20 is extremely low temperature (about ⁇ 20 ° C. to ⁇ 18 ° C.). For this reason, the heat insulating material 107 is arranged on the inner side of the lower part of the cold air passage 32. Thereby, dew condensation on the back wall surface of the refrigerator compartment 2 can be prevented.
  • the downstream side of the cold room damper 20 is inclined with the back wall of the cold room 2 and the depth of the lower part of the cold air passage 32 is reduced to about 10 mm. Thereby, the depth of the cold air
  • the refrigerator compartment damper 20 is arrange
  • the cold air passage 32 branches right and left above the inflow portion 32c, and has a right passage 32a and a left passage 32b at the top.
  • a plurality of discharge ports 73a, 73b, and 73c are provided at the side end of the right passage 32a so as to open sideways from the top.
  • a plurality of discharge ports 74a, 74b, and 74c are provided at the side end of the left passage 32b in order from the top and open to the side. Accordingly, the discharge ports 73a to 73c and 74a to 74c (first discharge ports) are arranged at both ends in the left-right direction of the refrigerator compartment 2.
  • the cool air flows through the cold air passage 32 from below to above, and the discharge ports 73a and 74a are provided at the upper portion which is the end portion of the cold air passage 32.
  • the upper discharge ports 73a and 74a are provided above the first shelf 41 from the top.
  • the middle-stage discharge ports 73b and 74b are provided between the first-stage mounting shelf 41 and the second-stage mounting shelf 41 from the top.
  • the lower discharge ports 73c and 74c are provided between the second-stage mounting shelf 41 and the third-stage mounting shelf 41 from the top.
  • the opening areas of the middle and lower discharge ports 73b, 73c, 74b, and 74c are smaller than the opening areas of the upper discharge ports 73a and 74a. Accordingly, the amount of cool air discharged from the lower discharge ports 73b, 73c, 74b, and 74c close to the cool air inflow side of the cool air passage 32 and close to the return port 2d arranged in the lower part of the refrigerator compartment 2 is limited. Accordingly, the cold air can be guided to the upper part of the cold air passage 32.
  • discharge ports 75 and 76 for discharging cool air to the chilled chamber 21 are provided at the lower end of the right passage 32a. Since the cold air immediately after flowing into the cold air passage 32 from the refrigerator compartment damper 20 is discharged from the discharge ports 75 and 76 to the chilled chamber 21, the chilled chamber 21 can be maintained at a low temperature.
  • a return port 2d through which the cold air from the refrigerator compartment 2 flows out is provided at the lower back of the chilled chamber 21. From the return port 2d, a communication passage 34 for communicating the refrigerator compartment 2 and the vegetable compartment 5 is led out.
  • the upper part of the communication path 34 faces the return port 2d and is provided with a cold air return part 34a extending from the left end to the right end of the chilled chamber 21, and the lower part of the communication path 34 extends downward from the right part of the cold air return part 34a.
  • the lower end of the communication path 34 is provided with an inlet 5c that opens into the vegetable compartment 5.
  • a return passage 46 (see FIG. 2) is provided in the upper part of the vegetable compartment 5 so as to open the front of the vegetable compartment 5 and the front of the cold air passage 31 and return the cold air below the cooler 11.
  • the circulation passage 81 has a back surface portion 81 a formed on the back surface of the refrigerator compartment 2 by the cooling panel 70 and a top surface portion 81 d formed on the ceiling surface of the refrigerator compartment 2.
  • the top surface portion 81d is provided to extend in the front-rear direction.
  • a circulating blower 85 is disposed at the rear of the top surface portion 81d, and a discharge port 84 (second discharge port) is provided at the front end.
  • An ion generator 86 that generates ions is disposed between the circulation fan 85 and the discharge port 84.
  • FIG. 6 and 7 show top views of the top surface portion and the top surface portion 81d of the refrigerator compartment 2.
  • FIG. The top surface portion 81d is arranged at the center in the left-right direction of the refrigerator compartment 2, and the discharge port 84 opens at the front end.
  • the circulation fan 85 is composed of a centrifugal fan, and exhausts air from an exhaust port 85a that is biased to the right in the drawing. For this reason, the ion generator 86 is arranged in the right direction in the same manner as the exhaust port 85a.
  • the top surface portion 81d has a stepped portion 81e between the exhaust port 85a and the ion generator 86, and the passage on the ion generator 86 is arranged above the lower end of the exhaust port 85a.
  • the cold air sent out from the exhaust port 85a is stored in the step portion 81e and guided to the ion generator 86. Thereby, the difference in the flow velocity between the inner periphery and the outer periphery of the circulation fan 85 formed of a centrifugal fan is reduced, and cold air is supplied to the ion generator 86.
  • the ion generator 86 includes first and second electrodes 86a and 86b that generate ions when a high voltage is applied.
  • the first and second electrodes 86a and 86b are arranged facing cold air passing through the top surface portion 81d.
  • the first and second electrodes 86a and 86b for generating ions may be disposed on the top surface portion 81d, and the power supply unit of the ion generator 86 may be disposed at another position.
  • a voltage having an AC waveform or an impulse waveform is applied to the first and second electrodes 86a and 86b.
  • a positive voltage is applied to the electrode 86a, and positive ions (H + ) generated by ionization are combined with moisture in the air to generate positive cluster ions mainly composed of H + (H 2 O) m.
  • a negative voltage is applied to the electrode 86b, and negative ions (O 2 ⁇ ) generated by ionization combine with moisture in the air to generate negatively clustered ions mainly composed of O 2 ⁇ (H 2 O) n.
  • m and n are arbitrary natural numbers.
  • Clustered positive ions H + (H 2 O) m and negative ions O 2 ⁇ (H 2 O) n are hard to disappear because they are covered with water molecules.
  • the ion discharged in the refrigerator compartment 2 aggregates on the surface of the floating microbe in the air, an odor component, and the adhesion microbe of a stored material, and surrounds these.
  • active species [ ⁇ OH] hydroxyl radicals
  • H 2 O 2 hydrogen peroxide
  • m ′ and n ′ are arbitrary natural numbers. Accordingly, by generating positive ions and negative ions and discharging them from the discharge port 84, it is possible to sterilize the room and remove odors.
  • the first and second electrodes 86a and 86b are arranged apart from each other in a direction crossing the cold air flow direction.
  • the positive ions (H + ) and the negative ions (O 2 ⁇ ) immediately after the generation tend to disappear due to collision.
  • the first and second electrodes 86a and 86b can be spaced apart to reduce the disappearance of ions immediately after the generation.
  • the distance W1 between the first and second electrodes 86a and 86b is 100 mm or more, a sufficient amount of ions can be guided to the discharge port 84.
  • a mixing plate 89 is provided on the downstream side of the ion generator 86 and extends from the side wall of the top surface portion 81d to narrow the flow path in the direction in which the first and second electrodes 86a and 86b are arranged.
  • the mixing plate 89 widens the downstream flow path in the direction in which the first and second electrodes 86a and 86b are arranged.
  • the cold air that has circulated on the ion generator 86 circulates through a flow path confined by the mixing plate 89, and the cold air containing clustered positive ions and the cold air containing negative ions are mixed. At this time, since ions are clustered, annihilation due to collision is reduced. Then, the cold air containing ions spreads in the substantially left-right direction by the mixing plate 89 and flows and is discharged from the discharge port 84 in the left-right direction.
  • the flow path width W2 squeezed by the mixing plate 89 is formed substantially equal to the distance W1 between the first and second electrodes 86a and 86b. Thereby, the disappearance of ions due to the collision between the mixing plate 89 and the ions can be suppressed, and the positive ions and the negative ions can be sufficiently mixed.
  • the back surface portion 81a has a vertical passage 81b and a horizontal passage 81c.
  • the vertical passage 81b extends up and down at the center in the left-right direction and communicates with the top surface 81d.
  • the horizontal passage 81c is formed extending horizontally in a comb shape from the lower portion of the vertical passage 81b, and suction ports 82a, 82b, 83a, 83b (first suction ports) through which the cool air in the refrigerator compartment 2 is sucked by driving of the circulating fan 85. Is provided. Thereby, the suction inlets 82a, 82b, 83a, 83b are arranged in the lower part of the refrigerator compartment 2.
  • the suction ports 82a and 82b open laterally at the right end of the lateral passage 81c, and the suction ports 83a and 83b open laterally at the left end of the lateral passage 81c.
  • the suction inlets 82a, 82b, 83a, 83b are arranged at both ends in the left-right direction of the refrigerator compartment 2.
  • the upper suction ports 82a and 83a are arranged between the second stage mounting shelf 41 and the third stage mounting shelf 41 from the top.
  • the lower suction ports 82b and 83b are arranged below the mounting shelf 41 in the third row from the top.
  • the top surface portion 81d is provided with a suction port 87 (second suction port) facing the suction side of the circulation fan 85.
  • the suction port 87 has a smaller opening area than the suction ports 82a, 82b, 83a, 83b.
  • the opening area of the suction port 87 is formed to be about 2 mm ⁇ 100 mm, and the opening areas of the suction ports 82a, 82b, 83a, 83b are formed to be about 8 mm ⁇ 50 mm to 8 mm ⁇ 90 mm.
  • a gap 88 is formed on the side of the cooling panel 70 between the rear end of the mounting shelf 41 and the back surface of the refrigerator compartment 2.
  • ducts with gaps 88 are formed between the discharge ports 73a to 73c and the suction ports 82a and 82b and between the discharge ports 74a to 74c and the suction ports 83a and 83b.
  • the cold air generated by the cooler 11 is discharged into the ice making chamber 4 and is also discharged into the freezer compartment 6 through the discharge ports 6d and 6e.
  • the cold air discharged into the ice making chamber 4 circulates through the ice making chamber 4, mixes with the cold air discharged into the freezing chamber 6, and flows through the freezing chamber 6.
  • the cold air flowing through the ice making chamber 4 and the freezer compartment 6 flows out from the freezer return port 22 and returns to the cooler 11. As a result, the ice making chamber 4 and the freezing chamber 6 are cooled.
  • the refrigerator compartment fan 23 and the circulation fan 85 are driven. At this time, the wind speed of the refrigerator compartment fan 23 is set lower than the wind speed of the circulation fan 85.
  • the cold air branched on the exhaust side of the freezer compartment fan 12 by the driving of the refrigerator compartment fan 23 circulates in the cold passage 32.
  • the cold air flowing through the cold air passage 32 branches into a right passage 32a and a left passage 32b. A part of the cold air passing through the right passage 32a is discharged into the chilled chamber 21 through the discharge ports 75 and 76 as shown by an arrow A1 (see FIG. 4).
  • the cold air flowing through the chilled chamber 21 flows out from the return port 2d.
  • the cold air rising upward from the lower side of the right passage 32a and the left passage 32b is discharged into the refrigerator compartment 2 through the discharge ports 73a to 73c and 74a to 74c as shown by an arrow A2 (see FIGS. 4 and 5).
  • the cold air discharged from the discharge ports 73a to 73c and 74a to 74c to the side flows along the side wall of the refrigerator compartment 2 to the front.
  • a part of the cool air discharged from the discharge ports 73a to 73c and 74a to 74c falls through the gap 88 behind the mounting shelf 41.
  • the cold air flowing forward along the side wall from the discharge ports 73a to 73c and 74a to 74c cools the stored material on the mounting shelf 41 from the surroundings, and descends the front of the mounting shelf 41 along the side wall. And it is guide
  • a part of the cool air descending in front of the mounting shelf 41 and the cool air descending through the gap 88 are mixed with the moist cool air in the refrigerator compartment 2. Then, the cold air containing moisture is sucked into the circulation passage 81 from the suction ports 82a, 82b, 83a, 83b as shown by an arrow A3 (see FIGS. 1 and 5). The cold air sucked into the circulation passage 81 rises in the circulation passage 81. Further, the cold air in the refrigerator compartment 2 is sucked into the top surface portion 81d of the circulation passage 81 as shown by an arrow A4 (see FIG. 2) from the suction port 87.
  • the cold air flowing through the circulation passage 81 includes ions generated by the ion generator 86.
  • Cold air containing ions is discharged from the discharge port 84 of the circulation passage 81 to the refrigerator compartment 2 as indicated by an arrow A5 (see FIGS. 2 and 6).
  • cool air is discharged obliquely downward from the discharge port 84 toward the upper door pocket 42 and the mounting shelf 41.
  • the inside of the door pocket 42 is cooled and sterilized, and cold air containing ions descends in front of the mounting shelf 41. Since the moisture in the cold air flowing through the circulation passage 81 is increased, the ions are clustered by binding with water molecules and are not easily lost, and the positive and negative ions reach the lower part of the refrigerator compartment 2.
  • the cold air discharged from the discharge port 84 to the refrigerator compartment 2 descends in front of the mounting shelf 41 and is guided to the return port 2d and partly to the suction ports 82a, 82b, 83a and 83b. Thereby, the cool air in the refrigerator compartment 2 circulates through the circulation passage 81 without passing through the cooler 11. Moreover, since the discharge port 84 opens in the center part of the left-right direction of the refrigerator compartment 2, the cold air discharged from the center part of the top
  • the cold air flowing through the circulation passage 81 and the cold heat discharged from the discharge ports 73 a to 73 c and 74 a to 74 c are transmitted to the member 72. Since the member 72 has high thermal conductivity, the temperature is made uniform, and cold heat is released from the entire back surface of the refrigerator compartment 2. Thereby, the temperature distribution of the refrigerator compartment 2 can be equalized.
  • the surface of the member 72 becomes cloudy due to condensation of the outside air.
  • the condensed moisture is then evaporated by the circulation of cold air and released into the refrigerator compartment 2. Therefore, the refrigerator 72 is moisturized by the member 72.
  • dew condensation also occurs on the back side of the member 72 facing the back surface part 81a of the circulation passage 81, so that a wide dew condensation area can be secured and the moisturizing effect can be improved.
  • the condensed water flowing down on the member 72 can be accumulated on the surface facing the upper surface of the unevenness to further improve the moisturizing effect.
  • Unevenness can be easily formed by bending by pressing or drawing.
  • the unevenness may be a groove shape or a rail shape extending in the horizontal direction, or may be a number of dimple shapes.
  • a water storage part (not shown) that stores condensed water is provided at the lower end of the back surface part 81a, the moisture retaining effect can be further improved by storing the condensed water flowing down the member 72 in the water storage part.
  • the return port 2d is arranged to the left of the chilled chamber 21 and is arranged in the vicinity of the center of the refrigerator compartment 2 in the left-right direction. For this reason, the refrigerator compartment 2 can be more uniformly cooled by the cool air introduced from the discharge ports 73a to 73c and 74a to 74c at both ends in the left-right direction to the return port 2d.
  • the cold air flowing out from the refrigerator compartment 2 through the return port 2d passes through the communication passage 34 and flows into the vegetable compartment 5 from the inlet 5c.
  • the communication path 34 is formed short, and the pressure loss can be reduced.
  • the cold air flowing into the vegetable compartment 5 flows through the vegetable compartment 5 and returns to the cooler 11 via the return passage 46. Thereby, the inside of the refrigerator compartment 2 and the vegetable compartment 5 is cooled, and when it reaches preset temperature, the refrigerator compartment damper 20 is closed and the refrigerator compartment fan 23 and the circulation fan 85 are stopped.
  • the cold air branched on the exhaust side of the freezing chamber blower 12 flows into the temperature switching chamber 3 through the temperature switching chamber discharge damper 37.
  • the cold air that has flowed into the temperature switching chamber 3 flows through the temperature switching chamber 3, flows out of the temperature switching chamber return damper 38, and returns to the cooler 11 through the return passage 17. Thereby, the inside of the temperature switching chamber 3 is cooled.
  • the temperature switching chamber 3 can switch the room temperature by the user's operation.
  • the operation modes of the temperature switching chamber 3 are wine (8 ° C), refrigerated (3 ° C), chilled (0 ° C), soft freezing (-8 ° C), and freezing (-15 ° C) depending on the temperature range. Provided.
  • the room temperature can be switched by varying the amount of opening of the temperature switching chamber discharge damper 37.
  • the heater 16 may be energized to switch the temperature from the refrigerated room temperature to the refrigerated room temperature. Thereby, it can switch to desired room temperature rapidly.
  • the room temperature of the temperature switching chamber 3 can be switched from a low temperature side where the stored items are cooled and stored to a high temperature side higher than normal temperature. Thereby, temporary heat insulation, warm cooking, etc. of the cooked heated food can be performed.
  • the room temperature on the high temperature side should be 50 ° C or higher considering the heater capacity tolerance and temperature distribution in the temperature switching chamber 3 because the growth temperature of the main food poisoning bacteria is 30 ° C to 45 ° C. Thereby, propagation of food poisoning bacteria can be prevented.
  • the heat-resistant temperature of a general resin part used in a refrigerator is 80 ° C., it can be realized at low cost when the room temperature on the high temperature side is set to 80 ° C. or lower.
  • the room temperature on the high temperature side is set to 80 ° C. or lower.
  • heating at 75 ° C. for 1 minute is required. Accordingly, it is more desirable to set the indoor temperature on the high temperature side to 75 ° C. to 80 ° C.
  • the circulation passage 82 is provided on the left and right behind the wide member 72 (back plate) on the left and right, the suction ports 82a, 82b, 83a, and 83b (first suction ports) are provided in a wide range on the back. be able to. Therefore, ions can be distributed in the refrigerator compartment 2 and the sterilization performance can be improved. Further, since the cool air passage 32 is provided on the left and right behind the member 72 (back plate), the discharge ports 73a to 73c and 74a to 74c (first discharge ports) can be provided in a wide range on the back surface. Therefore, the cold air generated by the cooler 11 can be distributed in the refrigerator compartment 2.
  • suction ports 82a, 82b, 83a, 83b are opened in the back surface portion 81a and arranged at both ends in the left-right direction at the lower part of the refrigerator compartment 2, and the discharge ports 84 (second discharge ports) are provided. Since it opens to the front part of the top surface part 81d and is arranged in the central part of the left-right direction of the refrigerator compartment 2, the cold air containing an ion spreads right and left of the refrigerator compartment 2, and distribute
  • suction port 87 (second suction port) is provided in the top surface portion 81d, cold air containing ions can be circulated to the upper rear of the refrigerator compartment 2. Thereby, sufficient ions can be supplied to the upper rear of the refrigerator compartment 2. Further, since the suction port 87 is provided above the member 72, cold air containing moisture due to condensation generated on the front surface of the member 72 is supplied from the suction port 87 to the ion generator 86. As a result, more damp cold air can be supplied to the ion generator 86, and the life of the cluster ions can be extended.
  • the cold air passage 32 and the circulation passage 81 are arranged so as to overlap each other, and the discharge ports 73a to 73c and 74a to 74c (first discharge ports) are arranged at both ends in the left and right direction in the upper part of the refrigerator compartment 2. Dry cold air discharged from the discharge ports 73a to 73c and 74a to 74c descends and is sucked from the suction ports 82a, 82b, 83a, and 83b. Therefore, it is possible to reduce the amount of dry cold air that comes into direct contact with the stored item, and to reduce the drying of the stored item.
  • the cool air is discharged from the discharge port 84 toward the mounting shelf 41 and the door pocket 42, the inside of the door pocket 42 can be cooled and sterilized. Furthermore, it is possible to easily guide the cold air containing ions through the space between the mounting shelf 41 and the door pocket 42 to the lower part of the refrigerating chamber 2 to improve the air blowing efficiency.
  • the first and second electrodes 86a and 86b are arranged apart from each other and the mixing plate 89 for restricting the flow path of the circulation passage 81 on the downstream side of the ion generator 86 is provided, the first and second electrodes 86a and 86b are provided. In this case, annihilation due to collision between positive ions and negative ions immediately after generation can be reduced. Further, after the ions are clustered by the wet cool air flowing through the circulation passage 81, the positive ions and the negative ions are mixed by the mixing plate 89. For this reason, the disappearance of ions is reduced by clustering, and a sufficient amount of positive ions and negative ions can be distributed throughout the refrigerator compartment 2. Therefore, the sterilization performance of the refrigerator 1 can be improved.
  • the mixed positive ions and negative ions can be spread and discharged into the refrigerator compartment 2. Accordingly, the ions can be further diffused and spread throughout the refrigerator compartment 2.
  • the cold air passage 32 through which the cold air from the cooler 11 passes and the circulation passage 81 through which the cold air circulates without passing through the cooler 11 are arranged in the front and back, so that the discharge ports 73a to 73c, 74a to 74c (first discharge ports) are provided at both ends in the left and right direction at the upper part of the back surface, and suction ports 82a, 82b, 83a, 83b (first suction ports) are provided at the lower portions of the left and right ends. 2 discharge ports) can be provided at the upper center.
  • the cold air containing ion can distribute
  • dry cold air discharged from the discharge ports 73a to 73c and 74a to 74c is mixed with the cold air in the refrigerating chamber 2 sucked from the suction ports 82a, 82b, 83a, and 83b, and is discharged from the discharge port 84 to be refrigerated. 2 is distributed. Therefore, it is possible to reduce the amount of dry cold air that comes into direct contact with the stored item, and to reduce the drying of the stored item.
  • the suction ports 82a, 82b, 83a and 83b are provided below the discharge ports 73a to 73c and 74a to 74c, the cold air discharged from the discharge ports 73a to 73c and 74a to 74c is lowered by its own weight, and the suction port 82a, 82b, 83a and 83b are smoothly guided. Accordingly, it is possible to further reduce the contact between the cold air discharged from the discharge ports 73a to 73c and 74a to 74c and the stored item.
  • the discharge port 84 should just open at least the center part of the left-right direction of the refrigerator compartment 2, and may be spread and formed from the center part to right and left.
  • the cold air passage 32 and the circulation passage 81 are integrally formed of a heat insulating material, the depth of the cold air passage 32 and the circulation passage 81 that overlap in the front-rear direction can be reduced. Therefore, the volumetric efficiency of the refrigerator 1 can be improved.
  • a gap 88 is formed between the back wall of the refrigerator compartment 2 and the mounting shelf 41 so that the discharge ports 73a to 73c and 74a to 74c communicate with the suction ports 82a, 82b, 83a, and 83b. Cold air can be guided to the suction ports 82a, 82b, 83a, 83b.
  • the upper suction ports 82a and 83a and the lower discharge ports 73c and 74c are both provided between the second-stage mounting shelf 41 and the third-stage mounting shelf 41 from above, and the suction ports 82a, 83a is arranged in the vicinity of the discharge ports 73c and 74c, respectively. Therefore, the cool air discharged from the discharge ports 73c and 74c can be more smoothly guided to the suction ports 82a and 83a.
  • the member 72 made of a good heat conductor that forms the front surface of the circulation passage 81 and contacts the cold air flowing through the circulation passage 81 is provided, the cold air in the refrigerator compartment 2 comes into contact with the front surface and the rear surface of the member 42. For this reason, when the humidity in the refrigerator compartment 2 rises due to inflow of outside air or the like, dew condensation occurs on the front and back surfaces of the member 42 and the surface of the member 42 becomes cloudy, and then the dew condensation evaporates. Therefore, the inside of the refrigerator compartment 2 can be moisturized, and the drying of stored items can be reduced.
  • suction port 87 is provided in the circulation passage 81 above the member 72, cold air containing moisture due to condensation generated on the front surface of the member 72 is supplied from the suction port 87 to the ion generator 86. Thereby, more damp cold can be supplied to the ion generator 86, and the life of ions can be extended.
  • the opening area of the suction port 87 is smaller than the opening areas of the suction ports 82a, 82b, 83a, 83b, the cold air from the upper discharge ports 73a, 74a to the suction port 87 arranged in the center in the left-right direction Inflow can be suppressed. Accordingly, it is possible to reduce the amount of dry cold air that comes into direct contact with the stored item arranged in the upper stage.
  • the cool air passage 32 arranged on the back surface of the refrigerator compartment 2 has discharge ports 73a and 74a (first discharge ports) at the upper part where the cool air flows upward from below and serves as a terminal portion of the cool air passage 32.
  • the circulation passage 81 is provided with a discharge port 84 (second discharge port) in the upper part of the refrigerating chamber 2 through which the cool air flows from below to above.
  • the cold air passage 32 is not bent in the vertical direction, and the lateral width of the cold air passage 32 and the circulation passage 81 can be formed wide. Thereby, the flow passage area can be increased while ensuring a sufficient internal volume without widening the depth of the cold air passage 32 and the circulation passage 81.
  • the air blowing efficiency can be improved, and the internal circulation can be reduced to achieve uniform cooling.
  • the passage length of the cold air passage 32 can be shortened, the discharge of cold heat to the outside can be reduced, the cooling efficiency can be improved, and the energy can be saved.
  • the discharge ports 73a to 73c, 74a to 74c (first Discharge ports) can be provided at both ends in the left-right direction on the back surface, and suction ports 82a, 82b, 83a, 83b can be provided at both ends in the left-right direction.
  • the cold air in the damp refrigerating chamber 2 sucked from the suction ports 82a, 82b, 83a, 83b is mixed with the dry cool air discharged from the discharge ports 73a to 73c, 74a to 74c, and the whole refrigerating chamber 2 is Circulate. Therefore, it is possible to reduce the amount of dry cold air that comes into direct contact with the stored item, and to reduce the drying of the stored item.
  • the discharge port 84 (second discharge port) is arranged in the center in the left-right direction of the refrigerator compartment 2, the cold air discharged from the discharge port 84 is guided to the suction ports 82a, 82b, 83a, 83b at both ends.
  • the discharge port 84 should just open at least the center part of the left-right direction of the refrigerator compartment 2, and may be spread and formed from the center part to right and left.
  • the suction ports 82a, 82b, 83a and 83b are provided below the discharge ports 73a to 73c and 74a to 74c, the cold air discharged from the discharge ports 73a to 73c and 74a to 74c is lowered by its own weight, and the suction ports 82a, 82b, 83a and 83b are smoothly guided. Accordingly, it is possible to further reduce the amount of cold air discharged from the discharge ports 73a to 73c and 74a to 74c directly in contact with the stored product, and to reduce drying of the stored product.
  • a gap 88 is formed between the back wall of the refrigerator compartment 2 and the mounting shelf 41 so that the discharge ports 73a to 73c and 74a to 74c communicate with the suction ports 82a, 82b, 83a, and 83b. Cold air can be guided to the suction ports 82a, 82b, 83a, 83b.
  • the upper suction ports 82a and 83a and the lower discharge ports 73c and 74c are both provided between the second-stage mounting shelf 41 and the third-stage mounting shelf 41 from above, and the suction ports 82a, 83a is arranged in the vicinity of the discharge ports 73c and 74c, respectively. Therefore, the cool air discharged from the discharge ports 73c and 74c can be more smoothly guided to the suction ports 82a and 83a.
  • the circulation passage 81 is extended to the ceiling surface of the refrigerator compartment 2 by the top surface portion 81d and the discharge port 84 is provided at the front portion of the top surface portion 81d, the wet cold air can be distributed to the vicinity of the door 2a. .
  • the circulation fan 85 is arranged at the upper part of the circulation passage 81, the degree of freedom of arrangement of the suction ports 82a, 82b, 83a, 83b on the upstream side of the circulation fan 85 is increased.
  • the suction ports 82a, 82b, 83a, 83b are arranged at both ends in the left-right direction of the refrigerator compartment 2, and the discharge port 84 is arranged at the center in the left-right direction.
  • the discharge port of the circulation passage 81 may be disposed at both ends in the left-right direction of the refrigerating chamber 2, and the suction port may be disposed at the center in the left-right direction of the refrigerating chamber 2.
  • the discharge port of the circulation passage 81 is arranged in the vicinity of the discharge ports 73a to 73c and 74a to 74c of the cold air passage 32, the dry cold air discharged from the discharge ports 73a to 73c and 74a to 74c of the cold air passage 32 is obtained. Wet cold air discharged from the discharge port of the circulation passage 81 is mixed.
  • the amount of dry cold air that directly contacts the stored product can be reduced, and drying of the stored product can be reduced. Further, the cool air discharged from the discharge port (second discharge port) of the circulation passage 81 is guided to the suction port in the central portion, and the cool air flows through the entire refrigerator compartment 2. Therefore, the temperature of the refrigerator compartment 2 can be made uniform.
  • Table 1 shows the result of measuring the ion distribution of the refrigerator 2 of the above embodiment.
  • the measurement positions in the up-down direction are four locations consisting of each stage divided by the three placement shelves 41.
  • the measurement positions in the front-rear direction are two locations on the front side (70 mm rearward from the front end of the mounting shelf 41) and the rear side (70 mm forward from the back wall of the refrigerator compartment 2).
  • the width of the refrigerator 1 is 685 mm.
  • the distance W1 between the first and second electrodes 86a and 86b and the flow path width W2 due to the mixing plate 89 are 180 mm.
  • the opening area of the suction port 87 is 100 mm ⁇ 2 mm.
  • Table 2 shows the results of measuring the ion distribution on the near side in the front-rear direction with the mixing plate 89 removed.
  • Table 3 shows the results of measuring the number of ions in each step of the three-step door pocket 42 provided on the left and right doors 2a of the present embodiment.
  • either the positive ion or the negative ion is less than 20000 / cm 3 at many positions on the near side in the refrigerator compartment 2. It is thought that positions with fewer ions increase on the far side of the refrigerator compartment 2.
  • 20000 ions / cm 3 or more of positive ions and negative ions are supplied over almost the entire inside of the refrigerator compartment 2 including the door pocket 42.
  • the present invention can be used in a refrigerator equipped with an ion generator. Moreover, according to this invention, it can utilize for the refrigerator provided with the circulation path which circulates the cool air in a storage chamber without passing a cooler.
PCT/JP2009/063383 2008-08-29 2009-07-28 冷蔵庫 WO2010024078A1 (ja)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102589241A (zh) * 2011-01-17 2012-07-18 三星电子株式会社 冰箱
CN102635995A (zh) * 2011-02-11 2012-08-15 三星电子株式会社 具有消毒器的冰箱
EP3862704A4 (en) * 2018-11-30 2022-02-23 Haier Smart Home Co., Ltd. AIR-COOLED REFRIGERATOR

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6389075B2 (ja) * 2014-07-08 2018-09-12 シャープ株式会社 冷蔵庫
JP6652396B2 (ja) * 2016-01-29 2020-02-19 シャープ株式会社 冷蔵庫

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541453A (en) * 1977-06-06 1979-01-08 Sekine Sumie Food preserving box
JPH01189477A (ja) * 1988-01-25 1989-07-28 Mitsubishi Electric Corp 冷蔵庫
JPH0942820A (ja) * 1995-08-04 1997-02-14 Matsushita Refrig Co Ltd 冷蔵庫
JP2002333265A (ja) * 2000-12-27 2002-11-22 Sharp Corp 貯蔵庫及び冷蔵庫

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001221565A (ja) * 2000-02-07 2001-08-17 Fuji Electric Co Ltd 冷蔵ショーケース
KR20070052506A (ko) * 2005-11-17 2007-05-22 삼성전자주식회사 냉장고
JP4526475B2 (ja) * 2005-12-26 2010-08-18 シャープ株式会社 冷蔵庫

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541453A (en) * 1977-06-06 1979-01-08 Sekine Sumie Food preserving box
JPH01189477A (ja) * 1988-01-25 1989-07-28 Mitsubishi Electric Corp 冷蔵庫
JPH0942820A (ja) * 1995-08-04 1997-02-14 Matsushita Refrig Co Ltd 冷蔵庫
JP2002333265A (ja) * 2000-12-27 2002-11-22 Sharp Corp 貯蔵庫及び冷蔵庫

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102589241A (zh) * 2011-01-17 2012-07-18 三星电子株式会社 冰箱
EP2476979A3 (en) * 2011-01-17 2013-12-25 Samsung Electronics Co., Ltd. Refrigerator
US9671149B2 (en) 2011-01-17 2017-06-06 Samsung Electronics Co., Ltd. Refrigerator
CN102635995A (zh) * 2011-02-11 2012-08-15 三星电子株式会社 具有消毒器的冰箱
US9702611B2 (en) 2011-02-11 2017-07-11 Samsung Electronics Co., Ltd. Refrigerator with sterilizer
CN102635995B (zh) * 2011-02-11 2017-11-03 三星电子株式会社 具有消毒器的冰箱
EP3862704A4 (en) * 2018-11-30 2022-02-23 Haier Smart Home Co., Ltd. AIR-COOLED REFRIGERATOR

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