WO2017163965A1 - 冷蔵庫 - Google Patents

冷蔵庫 Download PDF

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Publication number
WO2017163965A1
WO2017163965A1 PCT/JP2017/009911 JP2017009911W WO2017163965A1 WO 2017163965 A1 WO2017163965 A1 WO 2017163965A1 JP 2017009911 W JP2017009911 W JP 2017009911W WO 2017163965 A1 WO2017163965 A1 WO 2017163965A1
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WO
WIPO (PCT)
Prior art keywords
cooler
refrigerator
storage material
room
cold
Prior art date
Application number
PCT/JP2017/009911
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English (en)
French (fr)
Japanese (ja)
Inventor
克則 堀井
Original Assignee
パナソニックＩｐマネジメント株式会社
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
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
Priority to CN201780019821.1A priority Critical patent/CN108885046A/zh
Publication of WO2017163965A1 publication Critical patent/WO2017163965A1/ja

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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
    • F25D16/00—Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
    • 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
    • F25D17/08—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 using ducts

Definitions

  • This disclosure relates to a refrigerator provided with a cold storage material.
  • Patent Document 1 Conventionally, as a refrigerator provided with a cold storage material, one that reduces power consumption has been proposed (for example, see Patent Document 1).
  • Patent Document 1 discloses a refrigerator provided with a freezer compartment in which an internal space of a box is partitioned by a partition wall and has a cold storage material inside.
  • the refrigerator of Patent Document 1 performs a normal operation in which a cooling operation is performed so that the temperature in the freezer compartment becomes a predetermined first temperature, and a cooling operation in which the temperature in the freezer compartment is a second temperature lower than the first temperature.
  • the cold storage operation is selectively performed.
  • the use of a latent heat regenerator material that has a freezing point that is lower than the first temperature and higher than the second temperature and stores the latent heat due to the phase change as cold heat as the regenerator material, the power consumption at the peak time It has been proposed to reduce.
  • the cold storage material is provided on the partition wall constituting the inner wall surface of the storage room, the thickness of the partition wall increases and the internal volume of the storage room decreases.
  • the partition wall has an uneven shape, the cold storage material has a problem that it has a complicated configuration in accordance with the shape.
  • the present disclosure has been made in order to solve the conventional problems as described above, and the cold storage material can be installed with a simple configuration without increasing the partition wall, and the energy saving performance is improved. Provided refrigerator.
  • a refrigerator includes a storage room that is cooled by operation of a compressor, a cooling room that includes a cooler that cools the storage room, a regenerator material that changes phase, and storage. And a return duct for returning the cool air that has cooled the chamber to the cooler.
  • the regenerator material is disposed in the return duct and is disposed in the vicinity of the cooler.
  • the regenerator material may be disposed beside the cooling chamber constituting the cooler and disposed in a return duct that is insulated from the cooling chamber.
  • the return duct may be configured as a duct in which the cold air that has circulated through the refrigerating room that is the storage room returns.
  • the regenerator material may be arranged in a step portion formed in the return duct.
  • FIG. 3A is a diagram illustrating a configuration of a main part of the refrigerator according to the first embodiment of the present disclosure.
  • FIG. 3B is a diagram illustrating a configuration of another main part of the refrigerator according to the first embodiment of the present disclosure.
  • FIG. 3C is a diagram illustrating a configuration of still another main part of the refrigerator according to the first embodiment of the present disclosure.
  • FIG. 3D is a diagram illustrating a configuration of still another main part of the refrigerator according to the first embodiment of the present disclosure.
  • FIG. 3A is a diagram illustrating a configuration of a main part of the refrigerator according to the first embodiment of the present disclosure.
  • FIG. 3B is a diagram illustrating a configuration of another main part of the refrigerator according to the first embodiment of the present disclosure.
  • FIG. 3C is a diagram illustrating a configuration of still another main part of the refrigerator according to the first embodiment of the present disclosure.
  • FIG. 3D is a diagram illustrating a configuration of still another main part of the refrigerator according to the first
  • FIG. 3E is a diagram illustrating a configuration of still another main part of the refrigerator according to the first embodiment of the present disclosure.
  • FIG. 3F is a diagram illustrating a configuration of still another main part of the refrigerator according to the first embodiment of the present disclosure.
  • FIG. 4 is a diagram illustrating changes in the temperature, the cold storage amount, and the compressor rotation speed of the refrigerator according to the first embodiment of the present disclosure.
  • FIG. 5 is a diagram illustrating an outline of a power change according to the first embodiment of the present disclosure.
  • FIG. 6 is a diagram illustrating a configuration of a main part of the refrigerator according to the second embodiment of the present disclosure.
  • FIG. 7 is a diagram illustrating a configuration of a main part of the refrigerator according to the third embodiment of the present disclosure.
  • FIG. 8A is a diagram illustrating a configuration of a main part of the refrigerator according to the fourth embodiment of the present disclosure.
  • FIG. 8B is a diagram illustrating a configuration of another main part of the refrigerator according to the fourth embodiment of the present disclosure.
  • FIG. 9 is a longitudinal sectional view of the refrigerator according to the fifth embodiment of the present disclosure.
  • FIG. 10 is a diagram illustrating a refrigeration cycle of the refrigerator according to the fifth embodiment of the present disclosure.
  • FIG. 1 is a diagram viewed from the front of the refrigerator according to the first embodiment of the present disclosure.
  • 2 is a cross-sectional view of the refrigerator according to the embodiment of the present disclosure taken along line 2-2 in FIG. 3A to 3F are diagrams illustrating a configuration of a main part of the refrigerator compartment according to the first embodiment of the present disclosure.
  • FIG. 4 is a diagram illustrating changes in the temperature, the cold storage amount, and the compressor rotation speed of the refrigerator in the first embodiment of the present disclosure.
  • FIG. 5 is a diagram illustrating an outline of a power change of the refrigerator in the first embodiment of the present disclosure.
  • the refrigerator 101 includes a plurality of storage rooms. Specifically, the storage room is divided into five, and these five storage rooms are divided into an upper stage, a middle stage, and a lower stage. More specifically, the upper storage room has a refrigerator compartment 102 and has a double door on the front.
  • the middle storage room includes a first freezer room 103 having a drawer door, which is arranged below the refrigerator compartment 102, and an ice making room 105 having a drawer door, which is arranged side by side with the first freezer room 103.
  • the lower storage room is a vegetable compartment 106 with a drawer door arranged at the bottom, a first freezer compartment 103, an ice making room 105, and a vegetable compartment 106, a second freezer compartment 104.
  • the refrigerator compartment 102, the first freezer compartment 103, the second freezer compartment 104, the ice making room 105, and the vegetable compartment 106 have a refrigerator compartment door 102a, a first freezer compartment door 103a, and a second freezer compartment door 104a on the front. , An ice making room door, and a vegetable room door 106a.
  • the refrigerator compartment 102, the ice making compartment 105 and the first freezing compartment 103 arranged side by side are partitioned by a heat insulating partition wall 111 in the vertical direction.
  • the ice making chamber 105, the first freezing chamber 103, and the second freezing chamber 104, which are arranged side by side are partitioned by a heat insulating partition wall 111 in the vertical direction.
  • the second freezer compartment 104 and the vegetable compartment 106 are partitioned vertically by a heat insulating partition wall 111.
  • the refrigerator 101 has a heat insulating wall 110 filled between the outer box 108 and the inner box 109.
  • a variable temperature room 107 is defined as a storage room independent of the refrigerator compartment 102 in the lower part of the refrigerator compartment 102 provided in the upper part.
  • the variable temperature chamber 107 is configured as a switching room and is configured to be set to a first temperature range (chilled) or a second temperature range (partial).
  • the temperature change chamber 107 is located between the first temperature zone (chilled) of the refrigeration temperature zone near 0 ° C. and the first temperature zone and the freezing temperature zone of about ⁇ 6 ° C. or less.
  • the second temperature zone (partial) of about ⁇ 3 ° C., which is the temperature zone, can be set.
  • a cooling chamber 114 is formed at the rear rear side of the second freezing chamber 104.
  • the cooling chamber 114 has a cooler 115 inside.
  • a defrost heater 122 is disposed below the cooler 115.
  • the cooler 115 constitutes a refrigeration cycle for cooling the refrigerator 101 together with the compressor 112 installed in the upper machine room 113.
  • the cooling chamber 114 is provided with a blower fan 116 that forcibly circulates the cool air heat-exchanged by the cooler 115.
  • a damper device 117 that distributes cool air to each storage chamber is disposed above the blower fan 116 (see FIG. 2).
  • the damper device 117 includes a damper device that distributes the cold air flowing into the refrigerator compartment 102 and a damper device that distributes the cold air flowing into the variable temperature chamber 107.
  • cooling chamber 114 is divided forward and backward by a first freezing chamber 103 and a second freezing chamber 104 disposed in front and a partition wall 123.
  • the internal temperature of the refrigerator compartment 102 is set to about 2 to 3 ° C.
  • the internal temperature of the vegetable compartment 106 is set to about 2 to 5 ° C.
  • the first freezing room 103 is set.
  • the internal temperature of the second freezer compartment 104 is set to about ⁇ 18 to ⁇ 20 ° C.
  • the refrigerator 101 can be used by dividing the temperature zone in each storage room. Since the refrigerator 101 is configured as described above, a temperature zone suitable for preservation of food can be selected, food can be stored, and higher freshness and long-term preservation can be realized.
  • the cooler 115 in the cooling chamber 114 includes a plurality of fins 124 and end plates 125 provided at both ends of the cooler 115 with a refrigerant pipe 126 penetrating therethrough. It is arranged.
  • the refrigerant pipe 126 is formed in a plurality of stages in a meandering manner.
  • a partition wall 123 is provided in front of the cooler 115 in the cooling chamber 114.
  • the partition wall 123 constitutes a part of the cooling chamber 114.
  • the partition wall 123 is formed over substantially the entire width of the cooler 115 so that the cooling chamber 114 is thermally insulated from other storage chambers and the like.
  • a return duct 102b communicating with the return air passage of the refrigerator compartment 102 is provided (see FIG. 3C).
  • the cooling chamber 114 and the refrigerating chamber return duct 102b are arranged side by side and are configured to be insulated from the storage room or the like by a partition wall 123 that blocks the front of the cooler 115.
  • the regenerator material 127 is formed of a resin case, and is disposed on the side of the cooler 115, and is disposed in a space between the side edge of the cooler 115 and the side wall of the cooling chamber 114. (See FIG. 3C). More specifically, the regenerator material 127 is located between the side end of the cooler 115 (the right end in FIG. 3C) and the side wall of the cooling chamber 114 on the side where the refrigerating chamber return duct 102b is provided. Arranged in space. In the present embodiment, a partition partition 114a that thermally partitions the cooler 115 and the refrigerator return duct 102b is formed, and the cool storage material 127 is a cooler between the partition partition 114a and the cooler 115.
  • the cooling chamber 114 has a stepped portion 114b, and the regenerator material 127 includes another side end of the cooler 115 (the left end in FIG. 3C) and the cooling chamber 114. It arrange
  • the cold storage material 127 is formed with a recess 127a (see FIG. 3D) that covers a U-shaped bent pipe 126a (see FIG. 3A) that is a part of the refrigerant pipe 126. And the cold storage material 127 has the latching
  • regenerator material 127 is disposed above the defrost heater 122 disposed below the cooler 115.
  • the storage room is cooled by the latent heat or sensible heat of the cool storage material 127 and the cool heat of the cooler 115.
  • a U-shaped bent pipe 126a is inserted into the recessed portion 127a of the cold storage material 127, and the recessed portion 127a is formed independently for each U-shaped bent pipe 126a.
  • the recessed part 127a of the cool storage material 127 is formed so that the U-shaped bending pipe 126a may be covered individually.
  • the cold energy of the cooler 115 is easily stored in the cool storage material 127.
  • the regenerator material 127 may be provided with a recess 127b of the regenerator material 127 into which U-shaped bent pipes 126a formed at both ends of the cooler 115 are inserted.
  • the recessed portions 127b of the cold storage material 127 are not arranged independently for each of the U-shaped bent pipes 126a arranged in a plurality of stages in the vertical direction, but from the upper U-shaped bent pipe 126a to the lower U-shaped bent pipe 126a. It may be formed so as to have a communication groove 127c that communicates with the
  • the recessed part 127e may be formed in the cool storage material 127 so that the U-shaped bending pipe 126a arrange
  • the drainage of defrost water generated between the cooler 115 and the regenerator material 127 can be further improved, and the frost residue can be reduced.
  • regenerator material 127 configured as described above will be described.
  • the compressor 112 repeats ON / OFF operation while operating at a low rotation, and each storage room is set to a set temperature. It has cooled down. At this time, the temperature of the cooler 115 is about ⁇ 26 ° C., and the regenerator 127 is also cooled to substantially the same temperature. Note that the melting temperature of the cold storage material 127 is ⁇ 22 ° C.
  • the refrigerator 101 performs the cooling operation with the latent heat of the cool storage material 127 and the cooling heat of the cooler 115 as shown by the solid line in FIG. Done.
  • the compressor 112 is controlled to operate at a rotation speed from low to medium rotation by using the latent heat of the cold storage material 127.
  • the high rotation operation of the compressor 112 during the power increase time period can be suppressed, so that the electricity cost can be reduced.
  • this can reduce the temperature rise of the cooler 115 due to load fluctuation, temperature fluctuation loss can be reduced.
  • the dotted line in FIG. 5 has shown the case where a natural cooling operation is not performed by the latent heat of the cool storage material 127 and the cool heat of the cooler 115.
  • the cool storage material 127 rises in temperature.
  • the cool storage material 127 is installed in the vicinity of the cooler 115, the cool storage material 127 is efficiently stored in the cool storage material 127, and the compressor 112 is operated while the rotation speed is medium. With such a configuration, the cold storage operation is performed while suppressing the rotation speed of the compressor 112, and the energy efficiency can be improved. Thereby, the energy saving performance of the refrigerator 101 is improved.
  • the compressor 112 performs a cold storage operation while maintaining the rotation speed of medium rotation, and operates at a low rotation if the cold storage material 127 is cooled to a temperature substantially equal to the temperature of the cooler 115.
  • the defrosting operation of the cooler 115 is performed.
  • the defrosting of the cooler 115 is started by the heat of the defrosting heater 122.
  • the defrost water of the U-shaped bending pipe 126a is melted in the recess 127a and drained to the dew receiving tray 129.
  • the regenerator material 127 may be formed to have an open portion 127d at the lower portion.
  • the defrost water is guided to the lower part of the cold storage material 127 through the communication groove 127c without accumulating in the concave portion 127b, and the dew receiving tray 129 disposed below the defrost heater 122 from the open portion 127d (FIG.
  • the drainage to 3C) can be improved. Therefore, a pool of water when frost formation has melted remains between the regenerator material 127 and the cooler 115, and it is possible to suppress the freezing of ice and the development of ice angles due to the cooling operation. Thereby, abnormal frost formation of the cooler 115 can be prevented.
  • the refrigerator 101 operates the compressor 112 at a low rotation during the nighttime stable operation, and closes the damper device of the refrigerator compartment 102 and the damper device of the variable temperature chamber 107 so that the cold air is in the first freezer compartment 103 and It may be configured such that the second refrigerating chamber 104 is cooled in a circulating mode and the regenerator material 127 is efficiently cooled to a melting temperature ( ⁇ 22 ° C.) or lower.
  • the refrigerator 101 is cooled by lowering the set temperatures of the first freezer compartment 103 and the second freezer compartment 104 by 2 to 3 ° C. during the stable operation at night than during the cool operation with many doors opened and closed.
  • the cool storage material 127 may be stored below the melting temperature to reduce the operation rate of the compressor 112 during the cool-down operation in which the door is opened and closed frequently.
  • the cool storage material 127 and the cooler 115 do not contact, the form arrange
  • the regenerator material 127 may be formed of a metal case. In this case, the cold heat of the cooler 115 can be efficiently transmitted to the cold storage material.
  • the cool storage material 127 is arrange
  • the regenerator material 127 may be disposed on the side of the cooler 115 close to the refrigerating room return duct 102b. Since the air volume of the refrigerator compartment return duct 102b is large, the moisture contained in the return cold air is likely to be frosted on the side close to the refrigerator compartment return duct 102b of the cooler 115, and there is a possibility that the heat exchange performance is deteriorated. However, the cooling performance can be ensured by installing the cold storage material 127 on the side of the cooler 115 close to the refrigerator compartment return duct 102b.
  • the refrigerator 101 is provided with a freezer discharge damper (not shown) for adjusting the amount of cold air to the first freezer 103, the second freezer 104, and the ice making chamber 105, the first freezer When 103 and the second freezer compartment 104 have reached an appropriate temperature, the operation of the compressor 112 is stopped and the freezer compartment discharge damper is closed. Then, the blower fan 116 is operated, the refrigerating room damper or the variable temperature room damper is opened and closed, and the cooling operation of the refrigerating room 102 and the variable temperature room 107 is performed using the latent heat or sensible heat of the cooler 115 and the cold storage material 127. . Thereby, power consumption can be reduced.
  • the refrigerator 101 of the present embodiment includes the cooler 115 that is cooled by the operation of the compressor 112, the cooling chamber 114 in which the phase change cold storage material 127 is disposed, and the front of the cooling chamber 115. Is equipped with a storage room.
  • the regenerator material 127 is disposed in contact with or in proximity to the cooler 115.
  • the cool storage material 127 is cooled by the cooler 115.
  • the refrigerator 101 of this Embodiment is comprised so that a store room may be cooled with the cold energy of the cool storage material 127 and the cooler 115. FIG. With such a configuration, a cold storage amount from the cooler 115 to the cold storage material 127 can be secured, and a cooling amount at the time of internal cooling can be secured.
  • the cooler 115 may be formed in a meandering manner in a plurality of stages in the cooling chamber 114. Further, in refrigerator 101 of the present embodiment, cooler 115 has a meandering shape, and a plurality of portions having a meandering shape may be formed. Moreover, in the refrigerator 101 of this Embodiment, the cool storage material 127 may be arrange
  • cooler 115 has a plurality of fins 124 and end plate 125 provided at the end portion, and refrigerant pipe 116 is provided in a plurality of stages in a meandering manner. May be.
  • the cold storage material 127 may be disposed so as to cover the refrigerant pipe 116 outside the end plate 125. With such a configuration, the cold storage material 127 is arranged using the space space and can be easily installed, so that the workability can be improved and the storage space can be reduced.
  • FIG. 6 is a diagram illustrating a configuration of a main part of the refrigerator in the second embodiment of the present disclosure.
  • the overall configuration of the refrigerator 101 according to the second embodiment of the present disclosure is the same as that of the refrigerator 101 according to the first embodiment of the present disclosure described with reference to FIGS. 1 and 2.
  • the refrigerator 101 has a cold storage material 130 disposed on the upper part of the cooler 115. Specifically, a concave portion is formed in the cold storage material 130 so as to cover the upper refrigerant pipe 126 of the cooler 115 from above.
  • a refrigerator return duct 102b is formed on the right side of the cooler 115 when the cooler 115 is viewed from the front of the refrigerator 101.
  • the regenerator material 130 is on the left side of the center part in the left-right width direction of the cooler 115, that is, not on the side close to the refrigerating room return duct 102 b but on one side opposite to the refrigerating room return duct 102 b.
  • a cold air return port (not shown) circulating through the vegetable compartment 106 is provided.
  • the refrigerant pipe 126 includes a plurality of fins 124, but the refrigerant pipe 126 corresponding to the location where the cold storage material 130 is disposed is not provided with the plurality of fins 124.
  • One end of the regenerator material 130 is located above the end plate 125, and the other end is located in a range not exceeding the position where the blower fan 116 is projected onto the cooler 115 in the left-right width direction of the cooler 115. ing. That is, the regenerator material 130 does not exceed one end (the right end in FIG. 6) far from the end plate 125 in the left-right width direction of the blower fan 116 from the end plate 125 toward the center in the left-right width direction of the cooler 115. Until extended. Moreover, it arrange
  • the cold storage material 130 is fixed by a locking portion formed on the outer shell of the cold storage material 130 being locked to the refrigerant pipe 126.
  • the outer shell of the regenerator material 130 is formed so as to match the outer dimensions of the portion where the plurality of fins 124 are arranged. Therefore, it can prevent that the partition wall 123 which comprises the front part of the cooler 115 protrudes ahead more than necessary, and can maintain the volume of a store room.
  • the regenerator material 130 disposed close to the refrigerant pipe 126 of the cooler 115 is stored cold by the cold heat of the cooler 115, and reduces the temperature rise in the warehouse by the operation and action described above with reference to FIGS.
  • the rotation speed of the compressor 112 can be suppressed. Thereby, reduction of the daytime power consumption of the refrigerator 101 can be aimed at.
  • the cool storage material 130 is located in the upper stage of the cooler 115, not on the side near the refrigerating room return duct 102b having a large air volume, but on the side far from the refrigerating room return duct 102b.
  • the cold storage material 130 is arranged on the vegetable room return opening side with a small air volume.
  • the refrigerator 101 of the present embodiment includes the defrost heater 122 at the lower part of the cooler 115.
  • the cold storage material 127 may be disposed above the defrost heater 122.
  • the cool storage material 127 may be disposed on the upper part of the cooler 115 formed in a meandering manner in a plurality of stages in the cooling chamber 114. With such a configuration, a cold storage amount from the cooler 115 to the cold storage material 127 can be secured, and a cooling amount at the time of internal cooling can be secured.
  • FIG. 7 is a diagram illustrating a configuration of a main part of the refrigerator in the third embodiment of the present disclosure.
  • the overall configuration of the refrigerator 101 according to the third embodiment of the present disclosure is the same as the refrigerator 101 according to the first embodiment of the present disclosure described with reference to FIGS. 1 and 2.
  • a cold storage material 131 is embedded in a refrigeration chamber return duct 102b formed on the side of the cooler 115 in the cooling chamber 114.
  • the refrigerator compartment return duct 102b is formed of a heat insulating material, and the cold storage material 131 is disposed on the surface of the inner box 109 (see FIG. 2) constituting the refrigerator compartment return duct 102b communicating with the return air passage of the refrigerator compartment 102.
  • the regenerator material 131 has a height substantially equal to the height of the cooler 115 and is formed in a flat plate shape, for example.
  • the cold storage material 131 has a stepped portion formed in the arrangement portion of the inner box 109 constituting the duct surface and is embedded in the stepped portion so that there is no step with the refrigerator compartment return duct 102b. Moreover, the cool storage material 131 is stored cold by the operation
  • the cold air heat-exchanged by the cooler 115 is forcibly ventilated to each storage room by the blower fan 116, and the cold air discharged to the refrigerating room 102 circulates in the refrigerating room 102, and returns to the refrigerating room 102 (shown). None) and passes through a refrigerator compartment return duct 102b formed on the back surface of the second freezer compartment 104.
  • the temperature of the return cold air is about 5 to 6 ° C.
  • the regenerator 131 is partitioned from the cooler 115 in the vicinity by a heat insulating wall on the left and right sides, but communicates with the refrigerating room return duct 102b. Cold storage at -15 ° C.
  • the regenerator material with a melting temperature of about ⁇ 10 ° C. may be used to cool the return air from the refrigerating room using the latent heat of the regenerator material, but the return to the refrigerating room using the sensible heat of the regenerator material 131 may be used. Cold air can be cooled.
  • the cold air passes through the portion of the regenerator material 131 embedded in the refrigerator compartment return duct 102b when passing through the refrigerator compartment return duct 102b, before returning to the cooler 115 and heat exchange, Since heat is exchanged by the cold storage material 131, the moisture contained in the return cold air can be absorbed by the cold storage material 131. Thereby, the frost formation to the cooler 115 when cold air is heat-exchanged in the cooler 115 can be reduced.
  • the return cold air heat-exchanged with the cooler 115 can be cooled with the cool storage material 131, the load amount to the cooler 115 can be reduced and the energy saving performance of the refrigerator 101 can be improved.
  • the refrigerator compartment return duct 102b is disposed on the side of the cooler 115, and a defrost heater 122 is disposed below the cooler 115.
  • the cold storage material 131 is formed in a flat plate shape.
  • the shape of the cold storage material 131 is not limited to this shape, and the cross section has a substantially square shape in order to promote heat exchange with the return cold air.
  • the cool storage material 131 may be embed
  • the refrigerator 101 includes the storage chamber that is cooled by the operation of the compressor 112, the cooling chamber 114 that includes the cooler 115 that cools the storage chamber, and the cold storage material 131 that changes phase. And a return duct 102b for returning the cool air that has cooled the storage chamber to the cooler 115.
  • the cool storage material 131 is disposed in the return duct 102b and in the vicinity of the cooler 115.
  • the heat storage material 131 and the cooler 115 cool the cooling chamber, so that the temperature rise in the storage chamber is reduced, and the compressor 112 is rotated at a lower speed than the conventional refrigerator. It can be allowed to cool while operating at a driving speed of. Thereby, the cooling performance can be improved while suppressing the operation due to the high rotation of the compressor 112, and the energy efficiency can be improved. Therefore, the power consumption of the refrigerator 101 can be reduced during daytime when the refrigerator 101 is actually used and when the load amount due to door opening / closing is large, and the energy saving performance can be improved.
  • the cool storage 131 material is stored cold by the cooler 115 arranged in the vicinity, the return cold air temperature from the storage chamber can be efficiently reduced. Further, the temperature rise of the cooler 115 can be prevented, and a refrigerator with improved energy saving performance can be provided.
  • the cool storage material 131 may be arrange
  • the return duct 102b may be configured as a duct that returns the cold air that has circulated through the refrigerator compartment 102 that is a storage room.
  • the temperature of the return cold air in the refrigerator compartment 102 can be lowered and the moisture contained in the return cold air can be removed, so that frost on the cooler 115 can be reduced. Thereby, energy saving performance can be improved more.
  • the cold storage material 131 may be disposed in the stepped portion 109a formed in the return duct 102b. With such a configuration, it is possible to suppress ventilation resistance at a portion where the cool storage material 131 is disposed in the return duct 102b, and to reduce uneven frost formation and the like. Thereby, energy saving performance can be improved more.
  • FIGS. 8A and 8B are diagrams illustrating a configuration of a main part of the refrigerator according to the fourth embodiment of the present disclosure.
  • the overall configuration of the refrigerator 101 according to the fourth embodiment of the present disclosure is the same as that of the refrigerator 101 according to the first embodiment described with reference to FIGS. 1 and 2.
  • a cold storage material 132 is disposed in a refrigerating room discharge duct (discharge duct) 120.
  • a duct cover 120 a and an inner box 109 constituting the refrigerator compartment discharge duct 120 there are a duct cover 120 a and an inner box 109 constituting the refrigerator compartment discharge duct 120, and a refrigerator compartment discharge duct 120 is formed that is surrounded by the duct cover 120 a and the inner box 109 and forms an air passage.
  • a refrigerator compartment discharge duct 120 is formed that is surrounded by the duct cover 120 a and the inner box 109 and forms an air passage.
  • a concave portion (stepped portion) 109a is formed on the surface (duct side) of the inner box 109.
  • a cold storage material 132 formed in a flat plate shape is embedded in the concave portion 109a. That is, the regenerator material 132 has the recess 109a so that the surface of the regenerator material 132 on the refrigerating chamber discharge duct 120 side does not protrude and the air path resistance in the refrigerating chamber discharge duct 120 is reduced. It is arranged to be buried inside.
  • a cold air outlet 107a to the variable temperature chamber 107 is formed in the refrigerator compartment duct cover 120a.
  • the cold storage material 132 extends upward from a position where at least the cold air discharge port 107a of the variable temperature chamber 107 overlaps the projection surface of the variable temperature chamber 107 on the back surface of the cold room 102 on the back surface of the cold room 102. Is arranged.
  • the cold air (about ⁇ 15 ° C.) forcedly ventilated from the cooling chamber 114 by the blower fan 116 passes through the refrigerator discharge duct 120.
  • the cool storage material 132 is cooled by the cool air of the cooler 115 by the operation and action described above with reference to FIGS. 4 and 5, and is cooled to about ⁇ 10 ° C. Then, together with the cool air cooled from the cool storage material 132, the cool air is discharged into the refrigerating chamber 102 as cool air of about 2 ° C.
  • the compressor 112 when the compressor 112 is stopped, the blower fan 116 is operated, the freezer discharge damper (not shown) is closed, and the refrigerator 102 is cooled, so that the cooler 115 and the back of the refrigerator 102 are formed.
  • the refrigerating chamber 102 can be cooled by the regenerator material 132 that has been provided. Therefore, power consumption can be reduced.
  • the cold storage material 132 is also arranged to extend on the back surface of the cold air outlet 107a of the variable temperature chamber 107.
  • the variable temperature chamber 107 can be cooled to an appropriate temperature even when the compressor 112 is stopped by the cold air from the cold storage material 132.
  • the cool storage material 132 is arranged on the surface of the inner box 109, heat absorption and heat dissipation to the refrigerator compartment discharge duct 120 are repeated, so that the temperature difference from the outside air is reduced. Thereby, the cool storage material 132 acts as a heat insulating material, and the heat absorption amount of the refrigerator 101 can be reduced.
  • the refrigerator 101 includes the storage chamber cooled by the operation of the compressor 112, the cooling chamber 114 having the cooler 115 that cools the storage chamber, and the regenerator material 132 that changes phase. And a discharge duct 120 for discharging cool air discharged from the cooling chamber 114 into the storage chamber.
  • the cold storage material 132 is disposed in the discharge duct 120.
  • the refrigerator 101 of the present embodiment includes a stepped portion 109a formed rearward in the back surface portion in the discharge duct 120, and the cold storage material 132 is arranged in the stepped portion 109a. Also good.
  • the cool storage material 132 can discharge cool air into the storage chamber while suppressing air path resistance due to the arrangement.
  • the storage room is configured as a refrigeration room 102, a low temperature room that can be maintained at a temperature lower than the refrigeration temperature, a rear part of the refrigeration room 102 and the low temperature room,
  • the discharge duct 120 may be formed, and the regenerator material 132 may be disposed on the back of the refrigerating room and the low temperature room.
  • the low temperature chamber can also be cooled.
  • FIG. 9 is a longitudinal sectional view of the refrigerator according to the fifth embodiment of the present disclosure.
  • FIG. 10 is a diagram illustrating a refrigeration cycle of the refrigerator according to the fifth embodiment of the present disclosure.
  • a cooling chamber 133 is formed behind the first freezing chamber 103 and the second freezing chamber 104.
  • a cool storage chamber 135 is formed behind the cooling chamber 133 between the rear wall of the refrigerator 101 and the heat insulating wall 110 (see FIG. 2).
  • a first cooler 140 and a first fan 134 disposed above the first cooler 140 are disposed.
  • a cool storage material 136 is provided in the cool storage chamber 135, and a cool storage second cooler 137 around which a refrigerant pipe is wound is disposed on the outer periphery of the cool storage material 136.
  • a second fan 138 that forcibly ventilates the stored cold energy is disposed above the cold storage material 136.
  • the cooling chamber 133 and the cold storage chamber 135 are arranged in the front-rear direction in the refrigerator 101, but the first fan 134 and the second fan 138 are arranged in the refrigerator 101. They may be arranged in the left-right direction (not shown) as viewed from the front.
  • each storage chamber communicates with the cooling chamber 133 and the cold storage chamber 135, and the cold air flowing through the return duct exchanges heat with the first cooler 140 and the second cooler 137 for cold storage (see FIG. 10). Is done. Further, as shown in FIG. 10, the cooler 140 and the second cooler 137 for cold storage are arranged in parallel, and the first cooler 140 and the cooler for cold storage are arranged by a switching valve (switching unit) 139 (see FIG. 10). The refrigerant flow path flowing into the second cooler 137 is switchable.
  • the refrigerant when the load amount with little door opening and closing is small, such as at night, the refrigerant is circulated through the first cooler 140 while operating the compressor 112 at a low rotation speed, Cool storage room.
  • the switching valve 139 When each chamber reaches an appropriate temperature, the switching valve 139 is switched, and the refrigerant is circulated through the second cooler 137 for cold storage while the second fan is stopped to store heat.
  • the freezer damper (not shown) is closed and the first fan 134 is operated to perform cooling.
  • the switching valve 139 is switched so that the refrigerant circulates in the first cooler 140 to cool the first freezer chamber 103 and the second freezer chamber 104.
  • the cold storage material 136 is stored cold at night when the load is small, and is cooled to the freezing point temperature ( ⁇ 22 ° C.) or lower or the ambient temperature.
  • the compressor 112 is stopped and the cold storage room 102, the variable temperature room 107, the vegetable room 106, the 1st freezing are carried out from the cold storage room 135 by the operation of the second fan 138.
  • the chamber 103 and the second freezing chamber 104 are cooled.
  • the freezer compartment damper (not shown) provided in the cool storage room 135 will be closed, and the refrigerator compartment 102, the variable temperature room 107, And the vegetable compartment 106 is cooled.
  • the refrigerator 101 is configured to stop the compressor 112 and cool the storage room by allowing the cool storage material 136 to cool at the daytime power peak. Power consumption can be reduced, and electricity costs can be reduced.
  • the compressor 112 is not operated at a high speed, but is circulated through the cold storage room 135 while operating at a medium speed, and the storage room is cooled by allowing the cold storage material to cool. Therefore, power consumption can be reduced.
  • the cool storage material temperature detection part when the cool storage material temperature detection part (not shown) has a cool storage material temperature higher than predetermined temperature, it circulates a refrigerant
  • the cooling chamber 133 is arrange
  • the cool storage room 135 may be arrange
  • the second fan 138 may be arranged in the reverse direction.
  • the cooling chamber 133 and the cold storage chamber 135 may be configured to be insulated from each other and have independent air paths. With such a configuration, it is possible to suppress an increase in the temperature of the cold storage chamber 135 due to the defrost heater 122 when the cooling chamber 133 is defrosted.
  • the cooling chamber 133 having the first cooler 140 that is cooled by the operation of the compressor 112, and the second cooler 137 and the cold storage material 136 are arranged inside.
  • the cold storage room 135 is provided.
  • the cooling chamber 133 and the cold storage chamber 135 are partitioned and formed behind the freezing chamber 104.
  • the first cooler 140 and the second cooler 137 have a refrigerant flow path for supplying a refrigerant to the first cooler 140 and the second cooler 137, respectively. May be configured to be switched by the switching unit 139 that switches between the two.
  • the cooling chamber 133 and the cold storage chamber 135 may be arranged in the front-rear direction in the front-rear direction of the refrigerator 101 behind the freezing chamber 104.
  • a cold storage amount from the first cooler 140 to the cold storage material 136 can be secured, and a cooling amount at the time of internal cooling can be secured.
  • the cool storage 136 is arrange
  • the refrigerator 101 of the present embodiment performs a cold storage operation in which the refrigerant flows through the second cooler 137 by the switching unit 139 when the temperature in the storage chamber is lower than the predetermined temperature, and stores the cold storage material in the cold storage material.
  • the compressor may be stopped and the cold energy stored in the cold storage material 136 may be configured to operate the second fan 138 to cool the storage room.
  • the refrigerant flow path is switched so that the refrigerant flows into the first cooler 140 by the switching unit 139, and the storage chamber It may be configured such that a normal operation for cooling is performed. With such a configuration, the cold storage operation and the normal operation can be used properly according to the power situation, and the power consumption can be reduced.
  • the refrigerator according to the example of the embodiment of the present disclosure includes the cooler in which the cooler cooled by the operation of the compressor and the regenerator material that changes in phase are arranged, and is stored in front of the cooler.
  • a room is provided.
  • the regenerator material is placed in contact with or in proximity to the cooler.
  • the regenerator material is cooled by a cooler.
  • the refrigerator by the example of embodiment of this indication is comprised so that a storage room may be cooled with the cold energy of a cool storage material and a cooler. With such a configuration, a cold storage amount from the cooler to the cold storage material can be secured, and a cooling amount at the time of internal cooling can be secured.
  • the cooler may be formed in a meandering manner in a plurality of stages in the cooling chamber.
  • the cooler may have a meandering shape, and a plurality of portions having the meandering shape may be formed.
  • the regenerator material may be disposed between the cooler and the side portion of the cooler. With such a configuration, the cold storage effect from the cooler to the cold storage material can be enhanced.
  • the cooler includes a plurality of fins and an end plate provided at an end portion, and refrigerant pipes are provided in a plurality of stages in a meandering manner. It may be.
  • the cold storage material may be arranged so as to cover the refrigerant pipe outside the end plate. With such a configuration, the cold storage material is arranged using the space space and can be easily installed, so that workability can be improved and the storage space can be reduced.
  • the refrigerator according to the example of the embodiment of the present disclosure may include a defrost heater at the lower part of the cooler.
  • the cool storage material may be disposed above the defrost heater.
  • the regenerator material 127 may be disposed on the upper part of the cooler 115 formed in a meandering manner in a plurality of stages in the cooling chamber 114. With such a configuration, a cold storage amount from the cooler 115 to the cold storage material 127 can be secured, and a cooling amount at the time of internal cooling can be secured.
  • a refrigerator includes a storage room that is cooled by operation of a compressor, a cooling room that has a cooler that cools the storage room, a regenerator material that changes phase, and a storage room. And a return duct for returning the cool air cooled to the cooler.
  • the regenerator material is disposed in the return duct and is disposed in the vicinity of the cooler.
  • the cool storage material may be arrange
  • the cold storage effect from the cooler to the cold storage material can be further enhanced.
  • the return duct may be configured as a duct in which the cold air that has circulated through the refrigerating room that is the storage room returns.
  • the regenerator material may be arranged in a step portion formed in the return duct.
  • a refrigerator includes a storage room that is cooled by operation of a compressor, a cooling room that has a cooler that cools the storage room, a regenerator material that changes phase,
  • a refrigerator including a discharge duct for discharging cold air discharged from a chamber into a storage chamber, wherein a cold storage material is disposed in the discharge duct. Since it cools directly with the cold air which passes through the inside of a duct by such a structure, the cold storage amount to a cool storage material can be ensured and the cooling amount at the time of internal cooling can be ensured.
  • a refrigerator includes a stepped portion formed toward the rear in a back surface portion in the discharge duct, and is configured such that a cold storage material is disposed in the stepped portion. May be. With such a configuration, it is possible to discharge cool air into the storage chamber while suppressing air path resistance due to the arrangement of the cold storage material.
  • the storage room is configured as a refrigeration room, a low temperature room that can be maintained at a temperature lower than the refrigeration temperature, a refrigeration room and a low temperature room at a lower part of the refrigeration room space.
  • a discharge duct may be formed at the rear of the refrigeration chamber, and the regenerator material may be disposed on the rear surfaces of the refrigerator compartment and the low temperature compartment.
  • a refrigerator includes a cooling chamber having a first cooler that is cooled by operation of a compressor, and a cold storage chamber in which a second cooler and a cold storage material are arranged. And. Further, in a refrigerator according to still another example of the embodiment of the present disclosure, a cooling room and a cold storage room are partitioned on the rear side of the freezing room.
  • the first cooler and the second cooler include a refrigerant flow path for supplying a refrigerant to each of the first cooler and the second cooler. It may be configured to be able to be switched by a switching unit that switches the flow path.
  • the cooling chamber and the cold storage chamber may be arranged side by side in the front-rear direction of the refrigerator behind the freezer compartment.
  • the regenerator material is disposed in proximity to the second cooler, and the regenerated cold energy is forcibly ventilated into the storage room at the upper portion of the regenerator material.
  • Two fans may be arranged. With such a configuration, the cold energy stored in the cold storage material can be forcibly ventilated.
  • the switching unit when the temperature in the storage chamber is lower than a predetermined temperature, the switching unit performs a cold storage operation in which the refrigerant flows to the second cooler, and the cold storage material It may be configured to store cold.
  • the refrigerator according to still another example of the embodiment of the present disclosure operates the second fan with cold heat stored in the cold storage material when the temperature in the storage chamber is higher than a predetermined temperature.
  • the storage chamber may be cooled. With such a configuration, the amount of daytime power can be reduced.
  • the refrigerant flow path is switched by the switching unit so that the refrigerant flows to the first cooler.
  • the normal operation for cooling the storage chamber may be performed.
  • the present disclosure provides a refrigerator that can reduce power consumption during daytime when it is actually used and when a load amount due to door opening and closing is large. Therefore, the present invention can be applied to various cooling devices such as commercial and household refrigerators.

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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)
  • Devices That Are Associated With Refrigeration Equipment (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
PCT/JP2017/009911 2016-03-23 2017-03-13 冷蔵庫 WO2017163965A1 (ja)

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WO1995028608A1 (fr) * 1994-04-15 1995-10-26 Bernard Fafournoux Congelateur comportant un dispositif pour congelation rapide a accumulateurs de froid
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