WO2023095537A1 - Réfrigérateur - Google Patents

Réfrigérateur Download PDF

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Publication number
WO2023095537A1
WO2023095537A1 PCT/JP2022/040184 JP2022040184W WO2023095537A1 WO 2023095537 A1 WO2023095537 A1 WO 2023095537A1 JP 2022040184 W JP2022040184 W JP 2022040184W WO 2023095537 A1 WO2023095537 A1 WO 2023095537A1
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WO
WIPO (PCT)
Prior art keywords
refrigerating
cooler
chamber
refrigeration
cooling
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PCT/JP2022/040184
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English (en)
Japanese (ja)
Inventor
晃一 西村
元康 市場
航 安部
朋幸 栗田
Original Assignee
パナソニックＩｐマネジメント株式会社
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Application filed by パナソニックＩｐマネジメント株式会社 filed Critical パナソニックＩｐマネジメント株式会社
Publication of WO2023095537A1 publication Critical patent/WO2023095537A1/fr

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    • 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
    • F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors

Definitions

  • This disclosure relates to refrigerators.
  • Patent Document 1 discloses a refrigerator. This refrigerator performs heat exchange in a refrigerating cycle using a multi-flow type refrigerator having a flat tube inside which a plurality of channels through which a refrigerant flows are formed.
  • the present disclosure provides a refrigerator capable of improving cooling efficiency.
  • a refrigerator is a refrigerator comprising at least a refrigerating compartment and a refrigerating cooling compartment, wherein the refrigerating cooling compartment comprises a refrigerating cooler for cooling the refrigerating compartment, the refrigerating cooler comprising: The refrigerating chamber and the refrigerating cooling chamber are separated by a partition wall, and the partition wall includes a suction port that communicates between the refrigerating chamber and the refrigerating cooling chamber, The suction port is formed such that the height of the upper end thereof is equal to or higher than the height of the lower end of the front surface of the cooler for refrigeration.
  • the refrigerator according to the present disclosure can improve cooling efficiency.
  • FIG. 1 is a side cross-sectional view showing an outline of a refrigerator according to Embodiment 1.
  • FIG. FIG. 2 is a schematic front view showing the outline of the refrigerator according to Embodiment 1.
  • FIG. 5 is a plan view showing the cooler for refrigeration according to Embodiment 1;
  • FIG. 6 is a front view showing the cooler for refrigeration according to Embodiment 1;
  • FIG. 7 is a side cross-sectional view showing the vicinity of the suction port of Embodiment 1.
  • FIG. 1 is a schematic cross-sectional view showing the outline of a refrigerator according to the present invention.
  • the refrigerator 1 has a box-shaped main body 10 .
  • An upper partition plate 11 and a lower partition plate 12 are provided at two locations in the vertical direction of the main body 10 to divide the interior of the main body 10 into three spaces, one above the other.
  • the space above the upper partition plate 11 serves as a refrigerator compartment 13
  • the space between the upper partition plate 11 and the lower partition plate 12 serves as a freezer compartment 14
  • the space below the lower partition plate 12 serves as a vegetable compartment 15.
  • a low-temperature chamber 16 whose temperature is lower than that of the refrigerating chamber 13 is provided below the refrigerating chamber 13 .
  • a shelf board 17 for placing food is provided inside the refrigeration compartment 13 .
  • an ice making compartment 18 for storing ice is provided inside the freezer compartment 14.
  • a side-opening door 20 for the refrigerator compartment is provided on the front surface of the refrigerator compartment 13 so as to be freely opened and closed.
  • a freezer compartment drawer door 21 is provided on the front surface of the freezer compartment 14 so as to be freely opened and closed, and inside the freezer compartment drawer door 21, a freezer drawer case 22 for storing food is provided inside.
  • a vegetable compartment drawer door 23 is provided at the front opening of the vegetable compartment 15 so that it can be opened and closed. Inside the vegetable compartment drawer door 23, a vegetable compartment drawer case 24 for storing food is provided. is provided.
  • a cooling chamber 30 for refrigerating is provided on the back side of the refrigerating chamber 13 of the refrigerator 1 .
  • a refrigerating chamber duct 31 extending above the refrigerating chamber 13 is connected above the cooling chamber 30 for refrigerating.
  • the refrigerator compartment 13 and the cooling compartment for refrigeration 30 are separated by a partition wall 85 extending in the vertical direction.
  • a refrigerating cooler 32 is accommodated in the refrigerating cooling chamber 30 .
  • the refrigerating cooler 32 is a microchannel cooler.
  • a microchannel cooler is, for example, a cooler composed of flat perforated tubes and fins.
  • a flat perforated tube is a flat tube in which a plurality of channels through which a coolant flows are formed.
  • a refrigerating fan 33 is arranged above the refrigerating cooler 32 in the refrigerating cooling chamber 30 .
  • a centrifugal fan for example, is used as the cooling fan 33 .
  • the centrifugal fan is a fan that draws in cool air that has passed through the refrigerating cooler 32 from the central portion of one side in the axial direction of the rotating blades and blows it out in the centrifugal direction. Also, the centrifugal fan draws cold air from the rear of the cooling chamber 30 for refrigeration and blows it out in the centrifugal direction. By using a centrifugal fan, it is possible to secure air volume even in narrow ducts. Further, as shown in FIG.
  • the cooling fan 33 is provided above the upper surface 16 a of the low temperature chamber 16 .
  • the cooling fan 33 is prevented from exchanging heat with the low-temperature room 16 . Therefore, it is possible to prevent the cooling fan 33 from being cooled by heat exchange with the low-temperature room 16 mainly when the cooling fan 33 is not driven. Therefore, dew condensation, frost formation, and freezing of the refrigerating fan 33 can be suppressed, and the reliability of the refrigerating fan 33 is improved.
  • Cold air is sucked from the refrigerating cooling chamber 30 by the refrigerating fan 33 , so that the air flows from the refrigerating chamber 13 into the refrigerating cooling chamber 30 through the substantially rectangular suction port 87 provided in the partition wall 85 . . A detailed configuration around the suction port 87 will be described later.
  • the centrifugal fan draws cold air from the rear of the cooling chamber 30 for refrigeration, but may be configured to draw cold air from the front of the cooling chamber 30 for refrigeration.
  • the cooling fan 33 may be, for example, an axial fan.
  • the axial fan is inclined so that the blowing side faces upward so as to efficiently blow out the cold air cooled by the cooler 32 for refrigeration to the refrigerator compartment 13 .
  • cool air can be easily discharged downward.
  • Frost adhering to the refrigerating cooler 32 can be defrosted by the inside air of the refrigerating compartment 13 having a plus temperature. In this case, it is preferable to drive the refrigerating fan 33 without flowing the refrigerant through the refrigerating cooler 32 .
  • the refrigerating compartment duct 31 is connected to a casing 33a on the outlet side of the refrigerating fan 33.
  • the refrigerating compartment duct 31 is tapered such that its width gradually increases upward.
  • a refrigerating outlet 35 communicating with the refrigerating chamber 13 is formed in the refrigerating chamber duct 31 .
  • the refrigerating compartment duct 31 has a low temperature compartment duct 31a that is branched to the side in the middle.
  • the low-temperature chamber duct 31a communicates the refrigerating chamber duct 31 and the low-temperature chamber 16, and discharges cool air into the low-temperature chamber 16 from the low-temperature chamber outlet 35a.
  • the low-temperature-chamber duct 31 a also includes a low-temperature-chamber damper 36 a in the middle above the upper surface 16 a of the low-temperature chamber 16 .
  • the low-temperature room damper 36a is configured to switch between blowing and stopping the blowing of cold air cooled by the refrigerating cooler 32 to the low-temperature room 16 by performing an opening/closing operation.
  • the low-temperature chamber damper 36a is located above the upper surface 16a of the low-temperature chamber 16, heat exchange with the low-temperature chamber 16 is suppressed. Therefore, it is possible to suppress cooling of the low temperature chamber damper 36a by heat exchange with the low temperature chamber 16 mainly when the low temperature chamber damper 36a is closed. Therefore, dew condensation, frost formation, and freezing of the low-temperature-room damper 36a can be suppressed, and the reliability of the low-temperature-room damper 36a is improved.
  • a shielding plate 39 is provided on the lower surface side of the cooler 32 for refrigeration and below the header described later.
  • the shielding plate 39 covers the lower part of the header, and has a function of guiding the inside air sent from the refrigerator compartment 13 to the later-described air flow path of the cooler 32 for refrigeration.
  • the shield plate 39 may be provided in the cooling chamber 30 for refrigeration. In this case, the shielding plate 39 is provided at a position corresponding to the lower portion of the header, which will be described later.
  • a freezing cooling chamber 40 is provided on the back side of the freezing chamber 14 of the refrigerator 1 .
  • a freezing cooler 41 is accommodated in the freezing cooling chamber 40 .
  • the freezing cooler 41 is, for example, a fin-tube cooler.
  • a fin-tube cooler is, for example, a cooler composed of a circular pipe and flat fins.
  • a freezing fan 42 that sends cold air cooled by the freezing cooler 41 to the inside of the freezing compartment 14 is arranged above the freezing cooler 41 .
  • a fin-tube cooler is designed with a larger distance between fins than a microchannel cooler. Therefore, clogging due to frost formation can be suppressed, and the number of times the heater for defrosting is energized can be reduced. Therefore, power consumption can be suppressed.
  • An axial fan for example, is used as the cooling fan 42 .
  • the axial fan is inclined so that the blowing side faces upward so as to efficiently blow out the cold air cooled by the freezing cooler 41 to the freezer compartment 14 .
  • a freezer outlet 43 is formed on the back surface of the freezer compartment 14 .
  • the freezing fan 42 may be, for example, a centrifugal fan.
  • a glass tube heater 44 for defrosting frost adhering to the freezing cooler 41 is arranged below the freezing cooler 41 . Instead of using the glass tube heater 44, a pipe heater that directly heats the freezing cooler 41 may be used to defrost the freezing cooler 41.
  • FIG. Cold air in the cooling chamber 40 for freezing is configured to be sent to the vegetable compartment 15 through a communication hole 45 formed in the lower partition plate 12 .
  • a dew tray 37 for refrigeration is arranged below the cooler 32 for refrigeration.
  • a freezing dew tray 46 is arranged below the freezing cooler 41 .
  • An evaporating dish 47 is arranged below the back side of the vegetable compartment 15 .
  • a refrigerating drain pipe 38 is connected to the refrigerating dew tray 37 .
  • a freezing drain pipe 48 is connected to the freezing dew pan 46 .
  • the lower ends of refrigerating drain pipe 38 and freezing drain pipe 48 penetrate upper partition plate 11 and lower partition plate 12 , respectively, and extend to the vicinity of the upper portion of evaporating plate 47 .
  • the drain water accumulated in the refrigerating dew pan 37 and the freezing dew pan 46 can be sent to the evaporating pan 47 via the refrigerating drain pipe 38 and the freezing drain pipe 48. configured to evaporate.
  • a compressor 50 is installed on the rear upper part of the main body.
  • FIG. 3 is a refrigerating cycle diagram showing the refrigerating cycle of the refrigerator 1.
  • the refrigerator 1 includes a compressor 50, a condenser 51, a switching valve 52, a refrigerating decompression means 53, a refrigerating cooler 32, a refrigerating return pipe 55a, and a freezing decompressor.
  • the means 54 , the refrigerating cooler 41 , and the refrigerating return pipe 55 b are connected by a refrigerant return pipe 55 .
  • a refrigerating capillary tube 53 and a freezing capillary tube 54 are provided as decompressing means 53 for refrigerating and decompressing means 54, respectively.
  • the refrigerating pressure reducing means 53 and the refrigerating cooler 32 , and the freezing pressure reducing means 54 and the freezing cooler 41 are connected in parallel with each other via the switching valve 52 .
  • FIG. 4 is a perspective view showing cooler 32 for refrigeration according to the first embodiment.
  • FIG. 5 is a plan view showing cooler 32 for refrigeration according to the first embodiment.
  • FIG. 6 is a front view showing cooler 32 for refrigeration according to the first embodiment.
  • the refrigerating cooler 32 includes a refrigerant conduction member 60 through which refrigerant flows.
  • the refrigerant conducting member 60 is composed of a flat perforated tube in which a plurality of substantially rectangular passages are continuously arranged.
  • the refrigerant conduction member 60 is formed in a meandering shape including a plurality of flat tubes 61 formed substantially parallel with a predetermined interval and curved portions 62 connecting ends of the flat tubes 61 .
  • four flat tubes 61 are provided between headers, which will be described later.
  • the number of flat tubes 61 is not limited to this, and can be set arbitrarily. Further, each flat tube 61 and the bent portion 62 may be integrated, and one flat tube 61 may meander and be formed between the headers.
  • the flat tube 61 and the bent portion 62 are vertically divided into three upper regions 63, a middle region 64, and a lower region 65 in the present embodiment.
  • the area is vertically divided into three areas, but the area may be vertically divided into two areas or four or more areas.
  • An inlet side header 66 and an outlet side header 67 extending vertically are provided at one end of the outermost flat tube 61 .
  • the inlet-side header 66 and the outlet-side header 67 are made of circular tubes, for example.
  • the inlet-side header 66 and the outlet-side header 67 are arranged with their positions shifted in the width direction (horizontal direction) of the refrigerating cooler 32 .
  • the side header 67 is arranged at a position farther from the flat tube 61 than the inlet side header 66, and the inlet side header 66 and the outlet side header 67 are alternately provided.
  • the outlet side header 67 may be arranged near the flat tube 61 and the inlet side header 66 may be arranged at a position farther from the flat tube 61 than the outlet side header 67 is.
  • the inlet side header 66 and the outlet side header 67 are attached so as not to protrude from the end surface of the flat tube 61 in the depth direction (front-rear direction).
  • the inlet-side header 66 is connected to the flat tube 61 via a bent portion 61a formed by bending the end of the flat tube 61
  • the outlet-side header 67 is connected to the flat tube 61 by bending the end of the flat tube 61. It is connected to the flat tube 61 via the curved portion 61a.
  • the inlet-side header 66 and the outlet-side header 67 By arranging the inlet-side header 66 and the outlet-side header 67 in this way, the end faces of the inlet-side header 66 and the outlet-side header 67 are flush with the outer surface of the flat tube 61 of the refrigerant conducting member 60, and the inlet-side header
  • the side surfaces of 66 and outlet side header 67 are arranged so as not to protrude from the thickness of flat tube 61 .
  • the thickness dimension of the refrigerating cooler 32 can be reduced, and when the refrigerating cooler 32 is accommodated inside the refrigerating cooling chamber 30, the internal space of the refrigerating chamber duct 31 can be reduced. can.
  • the internal space of the refrigerator compartment 13 can be enlarged.
  • an inlet pipe 68 is connected to a side surface of the inlet header 66 on the rear side of the refrigerator compartment 13 at a height corresponding to the lower region 65 .
  • an inlet-side pipe 68 is connected to the side of the inlet-side header 66 in a direction toward the flat tube 61 to which the outlet-side header 67 is connected.
  • the inlet-side pipe 68 is preferably connected substantially parallel to the depth direction (front-rear direction) of the refrigerating cooler 32 .
  • the outlet side header 67 is formed higher than the height dimension of the inlet side header 66 .
  • Outlet-side pipe 69 is connected to a side surface of outlet-side header 67 facing forward of refrigerator compartment 13 and at a position above the upper end of upper region 63 .
  • the outlet side pipe 69 is connected to the side surface of the outlet side header 67 in the direction toward the flat tube 61 to which the inlet side header 66 is connected.
  • the outlet pipe 69 is preferably connected substantially parallel to the inlet pipe 68 . That is, the outlet pipe 69 is connected to a position above the upper end of the uppermost flat tube.
  • the inlet-side pipe 68 extends upward substantially parallel to the inlet-side header 66
  • the outlet-side pipe 69 extends upward substantially parallel to the outlet-side header 67
  • the inlet-side pipe 68 protrudes toward the outlet-side header 67 in the thickness direction (front-rear direction) of the flat pipe 61
  • the outlet-side pipe 69 protrudes toward the inlet-side header 66 from the flat pipe 61 . It protrudes in the thickness direction (front-rear direction).
  • the inlet-side pipe 68 and the outlet-side pipe 69 have diameters smaller than those of the inlet-side header 66 and the outlet-side header 67 .
  • the inlet-side pipe 68 and the outlet-side pipe 69 As described above, the arrangement space for the inlet-side pipe 68 and the outlet-side pipe 69 can be reduced.
  • the inlet pipe 68 is connected to the capillary tube 53 for refrigeration
  • the outlet pipe 69 is connected to the return pipe 55a for refrigeration.
  • the refrigerating capillary tube 53 is embedded in the rear heat insulating wall of the main body 10 after extending above the inlet side header 66 .
  • the refrigerating return pipe 55 a extends above the outlet side header 67 and is embedded in the rear heat insulating wall of the main body 10 .
  • the refrigerating capillary tube 53 and the refrigerating return pipe 55a are closely connected in the rear heat insulating wall so as to exchange heat.
  • An accumulator (gas-liquid separator) for preventing liquid refrigerant from flowing into the compressor 50 is not provided between the outlet pipe 69 and the refrigerating return pipe 55a connected downstream.
  • the coolant flows in from the lower portion of the inlet side header 66 and the coolant flows out from the upper portion of the outlet side header 67 .
  • the flow of the coolant is made parallel to the ventilation direction of the cool air.
  • parallel flow refers to the case where the flow direction of the coolant is the same as the ventilation direction of the cool air.
  • the inlet-side header 66 and the outlet-side header 67 may be provided at different ends of the flat tube 61 , respectively, and the inlet-side header 66 and the outlet-side header 67 may be arranged on both sides of the refrigerant conducting member 60 . .
  • the refrigerant inlet of the inlet side header 66 may be provided upward, and the refrigerant outlet of the outlet side header 67 may be provided downward.
  • a partition plate 70 is provided at a position corresponding to the boundary between the lower region 65 and the middle region 64 of the inlet side header 66 .
  • the positions corresponding to the middle region 64 and the upper region 63 of the inlet side header 66 communicate with each other.
  • a partition plate 71 is provided at a position corresponding to the boundary between the upper region 63 and the middle region 64 of the outlet side header 67 to block communication within the outlet side header 67 .
  • Positions corresponding to the middle region 64 and the lower region 65 of the outlet side header 67 communicate with each other.
  • the coolant that has flowed in from the lower portion of the inlet side header 66 flows through the interior of the lower region 65 of the coolant conduction member 60 and into the outlet side header 67 .
  • the refrigerant that has flowed through the outlet-side header 67 flows into the central region 64 of the refrigerant conduction member 60 , flows into the inlet-side header 66 , flows through the inlet-side header 66 through the lower region 65 , and then flows through the upper portion of the outlet-side header 67 .
  • each flat tube 61 is connected in series. As a result, even when the cool air ventilation direction is aligned with the vertical direction, it is possible to prevent the liquid refrigerant from accumulating in the lower portion due to gravity. Therefore, it becomes possible to spread the refrigerant over the entire cooler, and it is possible to suppress a decrease in heat exchange efficiency.
  • An air flow path 72 is formed between each flat tube 61 of the refrigerant conduction member 60 .
  • fins 73 are arranged which are continuously provided by being inclined at a predetermined angle with respect to the flat tube 61 and bent in a zigzag shape.
  • an air flow path 72 having a substantially triangular cross-sectional shape is continuously formed. Note that the air flow path 72 having a rectangular cross-sectional shape may be formed continuously.
  • the air flow path 72 is formed vertically along the vertical direction of the cooling chamber 30 for refrigeration.
  • the inside air flowing upward from the bottom of the cooling chamber 30 for refrigeration flows through the air flow path 72, and at this time, exchanges heat with the refrigerant flowing inside the refrigerant conduction member 60, and is cooled to a predetermined temperature.
  • the positions of the fins 73 in the lower region 65 and the fins 73 in the upper region 63 may be shifted. may be arranged with a phase shift of 1/2. That is, the substantially triangular air flow paths 72 in the upper region 63 and the substantially triangular air flow channels 72 in the lower region 65 may be formed so as to overlap each other in plan view. Further, the phase of the fins 73 may be shifted by shifting the phase of the fins 73 in the central region 64 with respect to the fins in the upper region 63 .
  • the inclination angle of the fins 73 in the lower region 65 on the upstream side of the air flow path may be set larger than the inclination angle of the fins 73 in the upper region 63 on the downstream side of the air flow path. That is, the fins 73 of the lower region 65 may be formed with a large angle corresponding to the vertex of the substantially triangular air flow path 72 . With this configuration, a large cross-sectional area of the air flow path 72 can be ensured in the lower region 65 on the upstream side of the air flow path 72 . Therefore, even if frost or condensation adheres to the fins 73 when the inside air exchanges heat with the refrigerant, it is possible to prevent the air flow path 72 from being blocked by the frost or condensation. flow can be secured.
  • the lower ends of the fins 73 are positioned below the lower ends of the coolant conduction members 60 .
  • the upper ends of the fins 73 may be positioned above the upper ends of the coolant conducting members 60 . As a result, since the fin area is increased, the amount of heat exchanged between the fins 73 and the inside air is increased, and the heat exchange efficiency of the inside air can be enhanced.
  • FIG. 7 is an enlarged view around the suction port 87 in FIG.
  • the height of the upper end 87a of the suction port 87 substantially matches the height of the lower end 32a of the front surface of the cooler 32 for refrigeration.
  • the partition inside the cooling chamber 30 for refrigeration A space is formed at the corner between the rear surface side of the wall 85 and the lower end 32a of the front surface of the cooler 32 for refrigeration. In the space formed at this corner, the air that has flowed in from the suction port 87 forms a vortex and tends to stay there.
  • the height of the upper end 87a of the suction port 87 and the height of the lower end 32a of the front surface of the cooler 32 for refrigeration substantially match. Therefore, in the present embodiment, the partition wall 85 and the lower end 32a of the front surface do not form a corner space inside the cooling chamber 30 for refrigeration. Therefore, it is possible to prevent the air that has flowed in from the suction port 87 from forming a vortex and stay there, and the air flows smoothly into the air flow path 72 near the partition wall 85 as well. Therefore, the efficiency of heat exchange in the cooler 32 for refrigeration is improved. Moreover, since the heat exchange in the cooler 32 for refrigeration is made uniform, uneven frost formation on the cooler 32 for refrigeration can be suppressed.
  • the cooler 32 for refrigeration can be installed downward, the height up to the cooler 32 for refrigeration, which has a large thickness, can be suppressed, and a decrease in the internal volume can be suppressed.
  • the fan 33 for refrigeration can also be installed downward. Therefore, the height from the thick refrigerating cooler 32 to the refrigerating fan 33 can be reduced, thereby suppressing a decrease in the internal volume.
  • the flat tube 61 provided on the front surface of the cooler 32 for refrigeration is in contact with the partition wall 85 .
  • the partition wall 85 As a result, it is possible to prevent air from passing through between the partition wall 85 and the cooler 32 for refrigeration without passing through the air flow path 72 . Therefore, the efficiency of heat exchange in the cooler 32 for refrigeration is improved.
  • a suction port 87 provided below the partition wall 85 is provided with a louver 89 .
  • three louvers 89 are arranged substantially vertically, and each louver 89 is inclined so that the cooling chamber 30 side for refrigeration is higher. That is, the louvers 89 are configured to guide the air sent from the cooling chamber side to the respective air flow paths 72 of the coolers 32 for refrigeration. As a result, the air sucked from the refrigeration compartment 13 into the cooling compartment 30 for refrigeration is guided upward by the louvers 89 and smoothly flows toward the cooler 32 for refrigeration. Therefore, the efficiency of heat exchange in the cooler 32 for refrigeration is improved.
  • louvers 89 are each slanted toward the fins 73 (ie, the air channels 72). As a result, the air can be guided from the suction port 87 to the fins 73, so that the air can easily flow through the air flow path 72, and the heat exchange efficiency in the cooler 32 for refrigeration is improved. Further, in this embodiment, more specifically, the louver 89 arranged on the upper side near the cooler 32 for refrigeration is located at the suction port 87 (or the partition wall 85) of the plurality of air flow paths 72. It is slanted towards the closer air flow path 72 .
  • the louvers 89 arranged on the upper, middle, and lower sides are sequentially inclined toward the front, center, and rear air flow paths 72 of the plurality of air flow paths 72, respectively. are doing. As a result, it is possible to prevent the air flows guided by the louvers from crossing each other, so that the air flows more easily through the air flow paths 72, and the heat exchange efficiency in the cooler 32 for refrigerating is improved.
  • the partition wall 85 is composed of a heat insulating material 85a facing the cooling chamber 30 for refrigeration and a decorative cover 85b facing the refrigerating chamber 13.
  • the heat insulating material 85a is made of a heat insulating material such as urethane foam.
  • the decorative cover 85b is made of resin such as ABS resin. Therefore, the decorative cover 85b facing the refrigerator compartment 13 improves the appearance. Furthermore, the heat insulating material 85a suppresses cooling of the decorative cover 85b due to heat exchange with cold air in the cooling chamber 30 for refrigerating and the cooler 32 for refrigerating, thereby suppressing dew condensation on the decorative cover 85b.
  • the refrigerant sent to the cooler 32 for refrigeration flows from the inlet side header 66 of the refrigerant conducting member 60 and flows inside the lower region 65 .
  • the refrigerant that has flowed to the outlet side header 67 flows through the middle region 64 via the outlet side header 67 , is sent to the inlet side header 66 , and flows through the upper region 63 via the inlet side header 66 .
  • Refrigerant that has flowed through the upper region 63 flows out from the outlet side header 67 and is returned to the compressor 50 .
  • the air inside the refrigerating chamber 13 flows into the cooling chamber 30 for refrigerating through the suction port 87 .
  • the internal air is guided upward along the louvers 89 and passes through the air flow paths 72 of the cooler 32 for refrigeration.
  • the inside air flows upward from below the refrigerating compartment duct 31 .
  • the cold air passing through the cooler 32 for refrigeration is directed upward from below the cooler 32 for refrigeration.
  • the air inside the refrigerator compartment 13 exchanges heat with the refrigerant flowing through the refrigerant conduction member 60 and is cooled.
  • the refrigerant sent to the freezing cooler 41 drives the freezing fan 42 to exchange heat with the inside air flowing upward from the bottom of the freezing cooling chamber 40, and the air cooled by the refrigerant Returned to chamber 14 .
  • the refrigerating cooling chamber 30 includes the refrigerating cooler 32 for cooling the refrigerating chamber 13, and the refrigerating cooler 32 is a microchannel cooler.
  • the refrigerating chamber 13 and the refrigerating cooling chamber 30 are separated by a partition wall 85, and the partition wall 85 is provided with a suction port 87 for communicating the refrigerating chamber 13 and the refrigerating cooling chamber 30.
  • the suction port 87 is formed such that the height of its upper end 87a is equal to or higher than the height of the lower end 32a of the front surface of the cooler 32 for refrigeration. According to this configuration, it is possible to prevent the air that has flowed in from the suction port 87 from staying. Therefore, the air can easily flow through the cooler 32 for refrigeration, and the efficiency of cooling is improved.
  • the refrigerating chamber 13 also includes a low-temperature chamber 16 having a lower temperature than the refrigerating chamber 13 .
  • a low-temperature chamber 16 having a lower temperature than the refrigerating chamber 13 .
  • Refrigerator 1 also includes refrigerating fan 33 that flows cool air cooled by refrigerating cooler 32 into refrigerating chamber 13 , and refrigerating fan 33 is arranged above upper surface 16 a of low-temperature chamber 16 . According to this configuration, heat exchange between the cooling fan 33 and the low temperature room 16 is suppressed. Therefore, dew condensation, frost formation, or freezing of the refrigerating fan 33 can be suppressed, and the reliability of the refrigerating fan 33 is improved.
  • the refrigerator 1 also includes a low-temperature chamber duct 31a that communicates the refrigerating cooling chamber 30 and the low-temperature chamber 16.
  • the low-temperature chamber duct 31a includes a low-temperature chamber damper 36a that can be opened/closed. , above the upper surface 16 a of the low temperature chamber 16 . According to this configuration, heat exchange between the low temperature chamber damper 36a and the low temperature chamber 16 is suppressed. Therefore, dew condensation, frost formation, or freezing of the low-temperature-room damper 36a can be suppressed, and the reliability of the low-temperature-room damper 36a is improved.
  • the refrigerating cooler 32 includes a plurality of flat tubes 61 arranged substantially parallel with a predetermined interval, air flow paths 72 formed between the respective flat tubes 61, and air flow paths 72 provided inside the air flow paths 72.
  • the refrigerating cooler 32 is provided so that the flat tube 61 is in contact with the partition wall 85 . According to this configuration, air can be prevented from passing between the flat tube 61 and the partition wall 85 without passing through the air flow path 72 . Therefore, the air can easily flow through the air flow path 72 provided with the fins 73, and the cooling efficiency is improved.
  • Refrigerator 1 also includes louvers 89 that guide air sucked into refrigerating cooling chamber 30 through inlet 87, and louvers 89 are provided so that the refrigerating cooling chamber 30 side is higher than the refrigerating chamber 13 side. ing. According to this configuration, the air sucked into the cooling chamber 30 for refrigeration through the suction port 87 is guided upward by the louvers 89 . Therefore, it becomes easier for air to pass through the cooler 32 for refrigeration, and the cooling efficiency is improved.
  • the refrigerator 1 also includes a louver 89 that guides the air sucked into the cooling chamber 30 for refrigerating via the suction port 87 , and the louver 89 is inclined toward the fins 73 . According to this configuration, the air sucked into the cooling chamber 30 for refrigeration through the suction port 87 is guided to the fins 73 by the louvers 89 . Therefore, the air can easily pass through the air flow path 72 of the cooler 32 for refrigeration, and the cooling efficiency is improved.
  • Embodiment 1 has been described as an example of the technology disclosed in the present application.
  • the technology in the present disclosure is not limited to this, and can also be applied to embodiments with modifications, replacements, additions, omissions, and the like.
  • the height of the upper end 87a of the suction port 87 of the partition wall 85 and the height of the lower end 32a of the front face of the cooler 32 for refrigeration are substantially the same.
  • the relationship between the height of the upper end 87a and the height of the lower end 32a of the front surface may be such that the partition wall 85 and the lower end 32a of the front surface do not form a space in the cooling chamber 30 for refrigeration. Therefore, the height of the upper end 87a of the suction port 87 is not limited to substantially matching the height of the lower end 32a of the front face of the cooler 32 for refrigeration. It may be equal to or higher than the lower end 32a of the front surface of the cooler 32 .
  • the three louvers 89 are vertically arranged in the suction port 87 .
  • Any louver 89 may be used as long as it can guide the air sucked from the suction port 87 upward. Therefore, a plurality of louvers 89 may be arranged in the front-rear direction, and the number of louvers 89 may be changed arbitrarily.
  • the number of louvers 89 is the same as the number of air flow paths 72 arranged in the front-rear direction as in Embodiment 1, each louver 89 and each air flow path 72 can be easily matched one-to-one. Therefore, by inclining each louver 89 toward each air flow path 72, the amount of air flowing into each air flow path 72 can be easily made uniform.
  • the present disclosure can be suitably used for refrigerators capable of improving cooling efficiency.
  • Refrigerating room for refrigerating room 31 Refrigerating room duct 31a Low temperature room duct 32 Cooler for refrigerating 32a Front lower end 33 Fan for refrigerating 33a Casing 35 Outlet for refrigerating 35a Outlet for cold room 36a Low temperature room damper 37 Refrigeration dew pan 38 Refrigeration drain pipe 39 Shield plate 40 Freezing cooling chamber 41 Freezing cooler 42 Freezing fan 43 Freezing outlet 44 Glass tube heater 45 Communication hole 46 Freezing dew pan 47 Evaporating dish 48 Freezing drain pipe 50 Compressor 51 Condenser 52 Switching valve 53 Refrigeration decompression means (refrigeration capillary tube) 54 Decompression means for freezing (capillary tube for freezing) 55 Refrigerant return pipe 55a Refrigerating return pipe 55b Freezing return pipe

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

La présente divulgation concerne un réfrigérateur présentant une efficacité de refroidissement améliorée.　Ce réfrigérateur comprend au moins une chambre de réfrigération 13 et une chambre de refroidissement de réfrigération 30, la chambre de refroidissement de réfrigération 30 comprenant un refroidisseur de réfrigération 32 pour refroidir la chambre de réfrigération 13, le refroidisseur de réfrigération 32 est configuré par un refroidisseur de type à microcanaux, la chambre de réfrigération 13 et la chambre de refroidissement de réfrigération 30 sont séparées l'une de l'autre par une paroi de séparation 85, la paroi de séparation 85 comprend une ouverture d'admission 87 permettant la communication entre la chambre de réfrigération 13 et la chambre de refroidissement de réfrigération 30 et l'ouverture d'admission 87 est configurée de telle sorte que la hauteur d'une extrémité supérieure 87a de celle-ci soit supérieure ou égale à la hauteur d'une extrémité inférieure 32a de la surface avant du refroidisseur de réfrigération 32.
PCT/JP2022/040184 2021-11-26 2022-10-27 Réfrigérateur WO2023095537A1 (fr)

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JP2021-191907 2021-11-26
JP2021191907A JP2023078669A (ja) 2021-11-26 2021-11-26 冷蔵庫

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WO2023095537A1 true WO2023095537A1 (fr) 2023-06-01

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS471329Y1 (fr) * 1969-03-05 1972-01-18
JP2003166778A (ja) * 2001-11-30 2003-06-13 Hoshizaki Electric Co Ltd 冷蔵庫
JP2004266247A (ja) * 2003-02-12 2004-09-24 Denso Corp 発熱性部品の冷却構造
JP2005009825A (ja) * 2003-06-20 2005-01-13 Matsushita Electric Ind Co Ltd 冷蔵庫
JP2005201530A (ja) * 2004-01-15 2005-07-28 Matsushita Electric Ind Co Ltd 冷蔵庫

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS471329Y1 (fr) * 1969-03-05 1972-01-18
JP2003166778A (ja) * 2001-11-30 2003-06-13 Hoshizaki Electric Co Ltd 冷蔵庫
JP2004266247A (ja) * 2003-02-12 2004-09-24 Denso Corp 発熱性部品の冷却構造
JP2005009825A (ja) * 2003-06-20 2005-01-13 Matsushita Electric Ind Co Ltd 冷蔵庫
JP2005201530A (ja) * 2004-01-15 2005-07-28 Matsushita Electric Ind Co Ltd 冷蔵庫

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