WO2012169573A1 - Réfrigérateur - Google Patents

Réfrigérateur Download PDF

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Publication number
WO2012169573A1
WO2012169573A1 PCT/JP2012/064642 JP2012064642W WO2012169573A1 WO 2012169573 A1 WO2012169573 A1 WO 2012169573A1 JP 2012064642 W JP2012064642 W JP 2012064642W WO 2012169573 A1 WO2012169573 A1 WO 2012169573A1
Authority
WO
WIPO (PCT)
Prior art keywords
cold air
cooler
air duct
refrigerator
heater
Prior art date
Application number
PCT/JP2012/064642
Other languages
English (en)
Japanese (ja)
Inventor
高島　佳世
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to CN201280027814.3A priority Critical patent/CN103597302B/zh
Publication of WO2012169573A1 publication Critical patent/WO2012169573A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/06—Removing frost
    • F25D21/08—Removing frost by electric heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/06—Walls
    • F25D23/069—Cooling space dividing partitions

Definitions

  • This invention relates to the refrigerator provided with the defrost heater.
  • Patent Document 1 A conventional refrigerator is disclosed in Patent Document 1.
  • a freezer room for storing stored items in a frozen state is disposed below a refrigerator room for storing stored items in a refrigerator.
  • a cold air duct with a cooler is provided behind the freezer compartment.
  • the cold air duct is formed to extend behind the refrigerator compartment through a blower.
  • a defrost heater is disposed in the cold air duct below the cooler.
  • the cold air duct has outlets for discharging cold air into the refrigerator compartment and the freezer compartment, respectively.
  • a return portion that has an opening facing the freezer compartment and returns the cold air from the freezer compartment to the upstream of the cooler.
  • a return portion for returning the cool air from the refrigerator compartment to the upstream of the cooler is also provided.
  • the cold air generated by the cooler rises in the cold air duct and is discharged to the refrigerator compartment and the freezer compartment through each outlet.
  • the cold air discharged to the refrigerator compartment flows through the refrigerator compartment to cool the stored items, and then returns to the upstream side of the cooler of the cold air duct from the return portion.
  • the cool air discharged into the freezer compartment flows through the freezer compartment to cool the stored item, it returns from the return portion to the upstream of the cooler of the cool air duct.
  • the defrost heater When the cooler is frosted, the defrost heater is driven to defrost the cooler. Thereby, defrost water is dripped and collect
  • JP 2010-43806 A (page 3 to page 5, FIG. 3)
  • An object of the present invention is to provide a refrigerator that can improve defrosting efficiency and cooling efficiency to save power.
  • the present invention provides a cooler for generating cool air, a cool air duct in which the cooler is circulated and the cool air is circulated, and the cooler duct disposed in the cool air duct below the cooler.
  • a defrost heater for defrosting the cooler a return portion for connecting the storage chamber and the cold air duct to return the cold air from the storage chamber to the cold air duct, and a return portion and the defrost heater.
  • a shielding plate that shields the radiant heat of the defrosting heater.
  • the cold air generated by the cooler flows through the cold air duct and is discharged into the storage room, and flows through the storage room to cool the stored items in the storage room.
  • the cold air flowing through the storage chamber returns to the cold air duct via the return portion, and the cold air circulates.
  • the defrost heater is driven at a predetermined time, and the cooler is heated to defrost.
  • the radiant heat of the defrost heater is blocked by the shielding plate, and the radiant heat is prevented from leaking from the return portion to the storage chamber side.
  • the return portion may be formed by a hole provided in the wall surface of the cold air duct, or a passage communicating with the cold air duct.
  • the present invention is characterized in that, in the refrigerator configured as described above, the return portion forms a cold air passage, and an opening portion of the return portion facing the cold air duct faces the defrost heater.
  • the cool air in the storage chamber flows through the return portion and flows into the cool air duct through the opening.
  • the radiant heat of the defrosting heater facing the opening is shielded by the shielding plate, and leakage of radiant heat to the return part through the opening is prevented.
  • the present invention is characterized in that in the refrigerator configured as described above, the shielding plate is made of metal.
  • a tray for collecting defrost water of the cooler is provided below the defrost heater, and the shielding plate is formed integrally with the tray. According to this structure, the defrost water dripped from a cooler by the drive of a defrost heater is collect
  • the present invention provides the refrigerator having the above-described configuration, in which the storage chamber stores the refrigerated product in a refrigerated manner, and a freezing chamber for storing the stored product in a frozen state is provided above the storage chamber via a partition wall, and the cooler is provided in the refrigerator.
  • the defrosting heater is disposed behind the partition wall while being disposed behind the freezer compartment.
  • storage rooms such as a refrigerator compartment and a vegetable compartment, are arrange
  • a defrost heater is arrange
  • the shielding plate for shielding the radiant heat of the defrost heater is provided between the return portion and the defrost heater, the radiant heat of the defrost heater is prevented from leaking from the return portion to the storage chamber side. Therefore, the defrosting efficiency and the cooling efficiency can be improved, and the power saving of the refrigerator can be achieved.
  • FIG. 1 is a side sectional view showing a refrigerator according to an embodiment.
  • the refrigerator 1 has a heat insulating box 2 filled with a heat insulating material such as urethane foam, and partition walls 3 and 4 are integrally formed in the heat insulating box 2.
  • the partition walls 3 and 4 are filled with a heat insulating material such as polystyrene foam, and divide the inside of the heat insulating box 2 into a refrigerator compartment 5, a freezer compartment 6 and a vegetable compartment 7 in order from above.
  • the refrigerator compartment 5 is opened and closed by a rotating door 5a to store stored items in a refrigerator.
  • the freezer compartment 6 is opened and closed by a door 6a at the front, and stores the stored items in the storage case 6b that is pulled out integrally with the door 6a.
  • the front of the vegetable compartment 7 is opened and closed by a door 7 a and is maintained at a refrigeration temperature higher than that of the refrigerator compartment 5. Thereby, the vegetables and fruits in the storage case 7b pulled out integrally with the door 7a are refrigerated and stored.
  • a back panel 13 is arranged behind the freezer compartment 6, and a cold air duct 11 is formed between the back panel 13 and the heat insulating box 2.
  • a cooler 21 and a blower 22 are arranged in the cold air duct 11. Further, a defrost heater 24 described later is disposed at the bottom of the cold air duct 11.
  • the cooler 21 forms an evaporator on the low temperature side of the refrigeration cycle operated by a compressor (not shown), and generates cold air by exchanging heat with the air flowing through the cold air duct 11.
  • a cold air discharge port 16 is opened at the upper part of the back panel 13, and a return port 18 is opened at the lower part so as to face the cooler 21 and return the cold air to the cold air duct 11.
  • a rear panel 14 is arranged behind the refrigerator compartment 5, and a cold air duct 12 is formed between the rear panel 14 and the heat insulating box 2.
  • the cold air duct 12 communicates with the cold air duct 11 via a damper 23. When the damper 23 is opened, a part of the cold air flowing through the cold air duct 11 flows through the cold air duct 12.
  • a cool air outlet 15 is opened at the top of the rear panel 14.
  • the rear panel 14 is provided with a cold air outlet (not shown), and a communication duct (not shown) arranged substantially parallel to the cold air duct 12 is led out from the outlet.
  • a protruding portion 4a protruding downward is formed at the rear portion of the partition wall 4 that partitions the freezer compartment 6 and the vegetable compartment 7.
  • the protruding portion 4 a is provided with a return portion 19 that returns the cold air from the vegetable compartment 7 to the cold air duct 11.
  • a partition plate 31 is disposed on the top of the vegetable compartment 7. The partition plate 31 covers the upper surface of the storage case 7b, and drying of vegetables and the like in the storage case 7b is prevented.
  • the rear end of the partition plate 31 is in contact with the lower portion of the return portion 19 of the protruding portion 4a, and a gap 32a is formed between the front end of the partition plate 31 and the door 7a.
  • a duct portion 32 through which cool air flows is formed between the partition wall 4 and the partition plate 31 in front of the protruding portion 4a.
  • FIG. 2 shows a perspective view of the partition wall 4.
  • the protrusion 4a of the partition wall 4 is provided with a recess 4b that opens at the top and forms the bottom of the cold air duct 11 (see FIG. 1).
  • a discharge port 17 is opened to the side of the recess 4 b and a communication duct (not shown) led out from the refrigerator compartment 5 is connected to the discharge port 17.
  • Cold air is discharged into the vegetable compartment 7 through the discharge port 17.
  • a shielding part 26 is arranged to face the return part 19.
  • FIG. 3 is a side sectional view showing the rear portion of the partition wall 4.
  • a defrost heater 24 that defrosts the cooler 21 (see FIG. 1) extends in the left and right directions in the recess 4b at the rear of the partition wall 4.
  • a metal tray 25 that collects defrosted water from the cooler 21 (see FIG. 1) is disposed on the bottom surface of the recess 4b.
  • the heat insulating material 4 c is filled in the front part of the partition wall 4, below the tray 25, and behind the defrost heater 24.
  • the return part 19 forms a passage having the wall surface of the heat insulating material 4c, and an opening 19a facing the vegetable compartment 7 is opened at the front end, and an opening 19b facing the cold air duct 11 is opened at the rear end.
  • the defrosting heater 24 is disposed to face the rear end opening 19b, and the tray 25 is integrally formed with a shielding plate 26 that shields between the defrosting heater 24 and the opening 19b by pressing.
  • a distance L between the opening 19b and the shielding plate 26 is set to about 10 mm to 20 mm.
  • the air flowing through the cold air duct 11 and the cooler 21 exchange heat to generate cold air.
  • the cold air flowing through the cold air duct 11 with the damper 23 closed is discharged from the discharge port 16 to the freezer compartment 6.
  • the cold air discharged into the freezer compartment 6 flows through the freezer compartment 6 to cool the stored items.
  • the cold air flowing through the freezer compartment 6 returns to the cold air duct 11 through the return port 18.
  • Cold air flowing through the communication duct is discharged from the discharge port 17 to the vegetable compartment 7.
  • the cold air discharged to the vegetable compartment 7 circulates around the storage case 7b of the vegetable compartment 7 to indirectly cool the stored items.
  • the cold air that has circulated through the vegetable compartment 7 circulates through the duct portion 32 via the gap 32 a and returns to the cold air duct 11 via the return portion 19.
  • Defrosting operation is performed to defrost the cooler 21 at a predetermined time.
  • the compressor (not shown) and the blower 22 are stopped, and the defrosting heater 24 is driven.
  • the cooler 21 is defrosted by the temperature rise, and when the upper part of the cooler 21 reaches a predetermined temperature (for example, 10 ° C.), the defrosting operation is finished.
  • the defrost water dripped from the cooler 21 is collected in the tray 25.
  • the radiant heat of the defrost heater 24 is shielded by the shielding plate 26, and leakage of radiant heat from the return portion 19 to the vegetable compartment 7 side is prevented. Thereby, the temperature increase of the vegetable compartment 7 by the radiant heat of the defrost heater 24 can be suppressed, and the cooling efficiency of the refrigerator 1 can be improved. Moreover, the radiant heat of the defrost heater 24 can be used effectively for defrosting, and defrosting efficiency can be improved. At this time, since the shielding plate 26 is made of metal, the defrosting heater 24 can be prevented from melting due to radiant heat, and the radiant heat can be reflected to further improve the defrosting efficiency.
  • Table 1 shows the state during the defrosting operation by the refrigerator 1 of the present embodiment.
  • the temperature of the cooler 21 and the temperature of the opening 19b at the rear end of the return unit 19 are measured.
  • the temperature of the cooler 21 is measured at three points: the lower end, the central portion in the vertical direction, and the upper end, and the defrosting operation is finished when the detected temperature at the upper end reaches 10 ° C.
  • the temperature rise of the return portion 19 is suppressed as compared with the comparative example, and the cooler 21 is rapidly heated. Thereby, it is confirmed that the defrosting time is shortened by about 10% (about 5 minutes) and the defrosting efficiency is improved. This corresponds to power saving of about 1 kWh per year in a 500 L type general refrigerator.
  • the shielding plate 26 that shields the radiant heat of the defrost heater 24 is provided between the return portion 19 and the defrost heater 24, the radiant heat of the defrost heater 24 from the return portion 19 to the vegetable compartment 7 side. Is prevented from leaking. Therefore, the defrosting efficiency and the cooling efficiency can be improved and power saving of the refrigerator 1 can be achieved.
  • the return portion 19 forms a cold air passage and the opening portion 19b facing the cold air duct 11 faces the defrosting heater 24, the radiant heat of the defrosting heater 24 that easily leaks from the opening portion 19b is effectively shielded. 26 can be shielded. Therefore, the shielding plate 26 can exert a greater effect on the improvement of the defrosting efficiency and the cooling efficiency.
  • the defrosting heater 24 can be prevented from melting due to radiant heat, and the radiant heat can be reflected to further improve the defrosting efficiency.
  • the shielding plate 26 is formed integrally with the tray 25, the number of parts can be reduced and the shielding plate 26 can be easily installed when the refrigerator 1 is assembled.
  • the cooler 21 is disposed behind the freezer compartment 6 and the defrost heater 24 is disposed at the rear part of the partition wall 4, the cooler 21 can be provided in a wide range behind the freezer compartment 6. For this reason, the heat exchange amount of the cooler 21 can be increased, and the cooling efficiency of the refrigerator 1 can be further improved.
  • the return portion 19 for returning the cold air to the cold air duct 11 forms a passage, but the return portion 19 may be formed by a hole provided in the wall surface of the cold air duct 11.
  • the present invention can be used for a refrigerator equipped with a defrosting heater.

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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)
  • Defrosting Systems (AREA)
  • Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)

Abstract

La présente invention comprend un refroidisseur (21) permettant de générer de l'air froid, une conduite d'air froid (11) dans laquelle le refroidisseur (21) est disposé et au travers de laquelle de l'air froid circule, un corps de chauffe dégivreur (24) disposé à l'intérieur de la conduite d'air froid (11) sous le refroidisseur (21) et conçu pour dégivrer le refroidisseur (21), une pièce de retour (19) pour mettre en communication une chambre de stockage (7) et la conduite d'air froid (11) et pour renvoyer l'air froid en provenance de la chambre de stockage (7) jusqu'à la conduite d'air froid (11), et une plaque barrière (26) disposée entre la pièce de retour (19) et le corps de chauffe dégivreur (24) et servant à créer une barrière vis-à-vis de la chaleur émise par le corps de chauffe dégivreur (24).
PCT/JP2012/064642 2011-06-09 2012-06-07 Réfrigérateur WO2012169573A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201280027814.3A CN103597302B (zh) 2011-06-09 2012-06-07 冰箱

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2011-128912 2011-06-09
JP2011128912A JP2012255602A (ja) 2011-06-09 2011-06-09 冷蔵庫

Publications (1)

Publication Number Publication Date
WO2012169573A1 true WO2012169573A1 (fr) 2012-12-13

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ID=47296130

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Application Number Title Priority Date Filing Date
PCT/JP2012/064642 WO2012169573A1 (fr) 2011-06-09 2012-06-07 Réfrigérateur

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JP (1) JP2012255602A (fr)
CN (1) CN103597302B (fr)
WO (1) WO2012169573A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106152860A (zh) * 2016-09-13 2016-11-23 王荣华 化霜节能的空气换热器
KR20220067186A (ko) * 2020-11-17 2022-05-24 엘지전자 주식회사 냉장고

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02103684U (fr) * 1989-02-03 1990-08-17
JP2007139296A (ja) * 2005-11-18 2007-06-07 Sharp Corp 冷蔵庫

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61285369A (ja) * 1985-06-12 1986-12-16 松下冷機株式会社 除霜装置
JP2575519B2 (ja) * 1990-05-21 1997-01-29 株式会社東芝 組合せ冷蔵庫
KR100203983B1 (ko) * 1995-04-06 1999-06-15 전주범 냉장고
JP4190451B2 (ja) * 2004-03-31 2008-12-03 三洋電機株式会社 冷却貯蔵庫
JP3944498B2 (ja) * 2004-08-25 2007-07-11 日立アプライアンス株式会社 冷蔵庫
JP4248491B2 (ja) * 2004-12-27 2009-04-02 日立アプライアンス株式会社 冷蔵庫
JP4646857B2 (ja) * 2006-06-09 2011-03-09 シャープ株式会社 冷蔵庫
JP4667307B2 (ja) * 2006-06-20 2011-04-13 シャープ株式会社 冷蔵庫

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02103684U (fr) * 1989-02-03 1990-08-17
JP2007139296A (ja) * 2005-11-18 2007-06-07 Sharp Corp 冷蔵庫

Also Published As

Publication number Publication date
CN103597302A (zh) 2014-02-19
JP2012255602A (ja) 2012-12-27
CN103597302B (zh) 2016-08-31

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