WO2014198152A1 - 电冰箱 - Google Patents

电冰箱 Download PDF

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Publication number
WO2014198152A1
WO2014198152A1 PCT/CN2014/074620 CN2014074620W WO2014198152A1 WO 2014198152 A1 WO2014198152 A1 WO 2014198152A1 CN 2014074620 W CN2014074620 W CN 2014074620W WO 2014198152 A1 WO2014198152 A1 WO 2014198152A1
Authority
WO
WIPO (PCT)
Prior art keywords
air
refrigerator
door
air passage
compartment
Prior art date
Application number
PCT/CN2014/074620
Other languages
English (en)
French (fr)
Inventor
仓谷利治
山川贵志
青木均史
Original Assignee
海尔集团公司
海尔亚洲国际株式会社
青岛海尔股份有限公司
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 海尔集团公司, 海尔亚洲国际株式会社, 青岛海尔股份有限公司 filed Critical 海尔集团公司
Publication of WO2014198152A1 publication Critical patent/WO2014198152A1/zh

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/023—Air curtain closures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/042—Air treating means within refrigerated spaces
    • F25D17/045—Air flow control arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
    • F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
    • F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
    • F25D17/062—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators
    • F25D17/065—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation in household refrigerators with compartments at different temperatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0662—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the corner
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/066—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply
    • F25D2317/0665—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by the air supply from the top
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
    • F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
    • F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts

Definitions

  • the present invention relates to a refrigerator for cooling and storing foods and the like in a storage compartment, and more particularly to a refrigerator having an air curtain function.
  • An air curtain is formed in a front opening portion of a refrigerating compartment (for example, Patent Document 1).
  • Fig. 8 is a cross-sectional view showing the vicinity of the cold storage compartment 102 of the household refrigerator 100 with an air curtain function disclosed in Patent Document 1.
  • the domestic refrigerator 100 has a top surface passage 111 on the top surface of the refrigerating compartment 102, and the top surface passage 111 allows the air cooled by the cooler 104 and sent out through the blower fan 105 to flow to the refrigerating compartment 102.
  • a cool air outlet 107 formed in the front portion of the top surface passage 111 is provided with a cross flow fan 112 for blowing cold air downward.
  • the household refrigerator 100 activates the blower fan 105 and the cross flow fan 112. Thereby, cold air is blown downward from the cold air outlet 107, and the air curtain 108 is formed in the front opening 103 of the refrigerator compartment 102.
  • the air curtain 108 prevents the cold air in the refrigerating compartment 102 from leaking out of the tank.
  • the household refrigerator 100 performs the cooling operation in the same manner as the conventional general refrigerator. That is, when the temperature in the refrigerating compartment 102 rises, the blower fan 105 and the compressor (not shown) are operated. Thereby, the cold air cooled by the cooler 104 is supplied to the refrigerating compartment 102 via the top surface passage 111 and the cold air outlet 107, and is supplied to the refrigerating compartment 102 via the rear duct 110 and the cold air outlet 109 formed in the back duct 110, and the refrigerating compartment 102 is performed. Cooling inside. When the temperature in the refrigerating compartment 102 is lowered to a predetermined value, the household refrigerator 100 stops the operation of the blower fan 105 and the compressor (not shown).
  • Patent Document 1 Japanese Laid-Open Patent Publication No. 2005-77008 (pages 4-5, 3)
  • the air is circulated as a whole in the refrigerator in the same manner as the normal cooling operation, that is, flowing from the cooler to the refrigerating compartment, the vegetable compartment, etc. via the cold air supply air passage, and A method of returning the entire route from the return air path to the cooler.
  • the air in each of the air passages and the respective storage chambers are mixed to increase the heat loss, which increases the power consumption of the compressor.
  • the present invention has been made in view of the above circumstances, and an object thereof is to provide a suitable air curtain capable of preventing leakage of cold air from a refrigerating compartment, and capable of efficiently stirring a refrigerating compartment and cooling at a uniform temperature. refrigerator.
  • the refrigerator according to the present invention includes: a refrigerating chamber having a door at the front; a supply air passage for supplying air cooled by the cooler to the refrigerating chamber; and a circulation air passage disposed on a top surface side and a back surface side of the refrigerating chamber; Provided in the inside of the circulation air passage, the air in the circulation air passage is transported from the back surface side to the top surface side; the air outlet is formed in the front portion of the circulation air passage on the top surface side, and the air is made from the above a circulation air passage flows to the refrigerating chamber; a return port formed on the circulation air passage on the back side to allow air to flow from the refrigerating chamber to the circulation air passage; and a wind direction control unit installed in the air outlet to adjust the refrigerating In the air direction blown by the chamber, in the state in which the door is opened, the air supply is turned, and the air blown from the air outlet is directed downward to form an air curtain by the wind direction control unit, and the door is closed.
  • a wind direction control unit is provided at an air outlet formed at a front portion of the circulation air passage on the top surface side of the refrigerator compartment, and the wind direction control unit is caused by the wind direction control unit in a state where the door of the refrigerator compartment is opened.
  • the air blown from the above air outlet forms an air curtain toward the lower side. That is, the airflow formed by a suitable air curtain is controlled by the above-described wind direction control unit.
  • a suitable air curtain can be formed to prevent cold air in the refrigerating compartment from leaking to the outside.
  • the air blown from the air outlet is directed by the wind direction control means in a direction different from a state in which the door is opened. That is, the airflow control unit can control the airflow blown from the air outlet to be a gas stream suitable for cooling and cooling.
  • the airflow direction may be directed forward by the wind direction control means.
  • the blowing direction may be directed toward the rear of the refrigerating compartment.
  • the circulation air passage is configured to be distinguished from an independent route for supplying air cooled by the cooler to the supply air passage of the refrigerator compartment. Further, inside the circulation air passage, there is provided an independent air blower that is different from the air-conditioning supply blower for circulating the air cooled by the cooler. Thereby, the air curtain can be formed irrespective of the cooling operation of sending the air cooled by the cooler to the refrigerating compartment, and the cold air cooled by the cooler can be prevented from leaking directly to the outside of the tank.
  • the air in the refrigerating compartment can be circulated irrespective of the cooling operation. Therefore, the state of stopping the supply of air from the supply air passage to the refrigerating compartment is stopped.
  • the above blower can also be operated. Thereby, the temperature difference between the vertical and the vertical in the refrigerating compartment can be reduced without performing the cooling operation, and deterioration of the quality of food or the like can be prevented.
  • a return port through which the air flows from the cold storage chamber to the circulation air passage is formed in the circulation air passage disposed on the back side of the refrigerator compartment.
  • the blower may be operated and the direction of the air blown from the air outlet may be changed by the wind direction control means.
  • the direction of the airflow may be periodically changed from the front to the rear or the reverse thereof.
  • the air in the refrigerating compartment can be stirred to effectively achieve uniform temperature.
  • an upper temperature detecting means for detecting the temperature of the upper portion of the refrigerating compartment and a lower temperature detecting means for detecting the temperature of the lower portion of the refrigerating compartment may be provided, and when the door is closed, the two temperature detecting units may be used. When the detected temperature difference exceeds a predetermined threshold, the blower is operated. Thereby, it is possible to prevent the deterioration of the quality of the food or the like due to an increase in the temperature difference between the vertical and the vertical in the refrigerator.
  • the blower may be operated after a predetermined period of time has elapsed after the supply of air from the supply air passage to the storage compartment is stopped.
  • the blower may be operated after a predetermined period of time has elapsed after the cooling of the cooler is stopped, that is, after the operation of the compressor is stopped.
  • Fig. 1 is a front elevational view of a refrigerator according to an embodiment of the present invention.
  • Fig. 3 is a front elevational view (A) and a cross-sectional view taken along line A-A of the supply air passage of the refrigerator compartment of the refrigerator according to the embodiment of the present invention.
  • Fig. 5 is a schematic view showing a state in which (A) a flap is closed and (B) a state in which the shutter is opened, and an opening and closing mechanism of the refrigerator according to the embodiment of the present invention.
  • Fig. 6 is a side cross-sectional view showing the vicinity of a refrigerating compartment in which an air curtain of the refrigerator according to the embodiment of the present invention is formed.
  • FIG. 7 is a view showing air circulation in a refrigerator compartment of a refrigerator according to an embodiment of the present invention.
  • FIG. An example of blowing forward and (B) a side cross-sectional view of the vicinity of the refrigerating compartment that is blown backward.
  • Fig. 8 is a side cross-sectional view showing the vicinity of a refrigerating compartment of an example of a refrigerator of the prior art.
  • Fig. 1 is a front external view showing a schematic structure of a refrigerator 1 of the present embodiment.
  • Fig. 2 is a cross-sectional view of the right side of the electric ice box 1.
  • the refrigerator 1 is provided with a heat insulating box 2 as a main body, and a storage chamber for storing food or the like is formed inside the heat insulating box 2.
  • the inside of the storage compartment is divided into a plurality of accommodation chambers 3 to 7 depending on the storage temperature or use.
  • the uppermost layer is the refrigerating compartment 3, the lower side of the lower layer is the ice making compartment 4, and the right side is the upper freezing compartment 5, and the lower layer is the lower freezing compartment 6, and the lowermost layer is the vegetable compartment 7.
  • heat insulating doors 8 to 12 are opened and closed in the opening portions corresponding to the respective storage chambers 3 to 7.
  • the heat insulating doors 8a, 8b are doors that divide and block the front of the refrigerating compartment 3, and the upper left lower portion of the heat insulating door 8a and the upper right lower portion of the heat insulating door 8b are rotatably supported by the heat insulating box 2. Further, the heat insulating doors 9 to 12 are supported by the heat insulating box 2 so as to be pulled out toward the front side of the refrigerator 1.
  • the heat insulating box 2 as the main body of the refrigerator 1 is provided with an outer casing 2a made of a steel plate having an opening at the front, and a gap between the outer casing 2a and the outer casing 2a.
  • the inner box 2b made of synthetic resin in the opening portion and the heat insulating material 2C made of foamed polyurethane which are foamed in the gap between the outer box 2a and the inner box 2b are formed.
  • each of the heat insulating doors 8 to 12 also has the same heat insulating structure as that of the heat insulating box 2.
  • the refrigerating compartment 3 is partitioned between the ice making compartment 4 located in the lower layer and the upper freezing compartment 5 by an insulating partition 36.
  • the heat insulating separator 36 is a molded product of a synthetic resin, and is filled with a heat insulating material inside.
  • ice making compartment 4 and the upper freezing compartment 5 are separated by a partition (not shown in the drawings). Further, the ice making compartment 4 and the upper freezing compartment 5 communicate with the lower freezing compartment 6 provided in the lower layer in a free air flow. Further, the lower freezing compartment 6 and the vegetable compartment 7 are separated by a heat insulating partition 37. Further, on the top surface and the back surface of the refrigerating compartment 3 inside the inner box 2b, a circulation air passage 20 is defined by a partition member 28 made of synthetic resin. An air blower 27 that conveys air from the circulation air passage 20b on the back side to the circulation air passage 20a on the top surface side is disposed inside the circulation air passage 20.
  • the blower 27 is a turbo blower such as a centrifugal type. Further, the blower 27 is disposed inside the upper side of the refrigerating compartment 3. Specifically, the blower 27 is disposed obliquely disposed in the air passage of the circulation air passage 20b connecting the back side and the circulation air passage 20a on the top surface side so that the suction port faces obliquely downward. In this way, by using the centrifugal blower as the blower 27 and arranging the upper inner corner portion of the refrigerating compartment 3 where food extraction is difficult, the convenience of accommodating food can be ensured.
  • the blower 27 so that the air is blown upward and upward, the blown air flows along the inner tank 2b constituting the top surface of the air passage in the circulation air passage 20a on the top surface side. Thereby, the wind direction can be adjusted by the opening and closing operation of the flap 24 which will be described later.
  • An air outlet 21 for allowing air to flow from the inside of the circulation air passage 20 to the inside of the refrigerating compartment 3 is formed in the front portion of the circulation air passage 20a on the top surface side.
  • the air outlet 21 is an opening formed in the front portion of the partition member 28 on the top surface side, and communicates the circulation air passage 20 with the refrigerating chamber 3.
  • a lower portion 22 for allowing air to flow from the inside of the refrigerating compartment 3 to the inside of the circulation air passage 20 is formed in the lower portion of the circulation air passage 20b on the back side.
  • the return port 22 is an opening formed in the lower portion of the partition member 28 on the back side, and communicates the refrigerating chamber 3 with the circulation air passage 20.
  • a baffle 24 as a wind direction control unit that adjusts the direction of the air blown from the circulation air passage 20 to the refrigerating compartment 3 is disposed in the air outlet 21.
  • the baffle 24 has a substantially plate shape, and by changing the orientation of the baffle 24, the orientation of the air blown from the air outlet 21 can be appropriately controlled.
  • a supply air passage 15 defined by a partition member 29 made of synthetic resin is formed on the back surface of the refrigerating compartment 3 and on the inner side of the circulation air passage 20, a supply air passage 15 defined by a partition member 29 made of synthetic resin is formed.
  • the partition member 29 is made of, for example, expanded polystyrene, and has a function of insulating heat between the circulation air passage 20 and the supply air passage 15.
  • a supply air passage 14 defined by a partition member 38 made of synthetic resin is formed inside the ice making compartment 4, the upper freezing compartment 5, and the lower freezing compartment 6, a supply air passage 14 defined by a partition member 38 made of synthetic resin is formed inside the ice making compartment 4, the upper freezing compartment 5, and the lower freezing compartment 6, a supply air passage 14 defined by a partition member 38 made of synthetic resin is formed inside the ice making compartment 4, the upper freezing compartment 5, and the lower freezing compartment 6, a supply air passage 14 defined by a partition member 38 made of synthetic resin is formed inside the ice making compartment 4, the upper freezing compartment 5, and the lower freezing compartment 6, a supply air passage 14 defined by a partition member 38 made of synthetic resin is formed inside the ice making compartment 4, the upper freezing compartment 5, and the lower freezing compartment 6, a supply air passage 14 defined by a partition member 38 made of synthetic resin is formed inside the ice making compartment 4, the upper freezing compartment 5, and the lower freezing compartment 6, a supply air passage 14 defined by a partition member 38 made of synthetic resin is formed inside the ice making compartment 4, the upper freezing compartment 5, and
  • a cooling chamber 13 partitioned by a partition member 39 is provided on the inner side of the supply air passage 14 inside the inner box 2b.
  • An opening 13a that connects the cooling chamber 13 and the supply air passage 14 is formed in the partition member 39 at the upper portion of the cooling chamber 13, and a blower 32 for supplying cold air to each of the storage chambers 3 to 7 is disposed in the opening 13a.
  • an opening 13b for sucking the return cold air from the storage chamber into the inside of the cooling chamber 13 is formed below the cooling chamber 13.
  • a cooler 33 for cooling the circulating air is disposed inside the cooling chamber 13.
  • the cooler 33 is connected to a compressor 31, a radiator (not shown), and an expansion valve (capillary) (not shown) via a refrigerant pipe to constitute a vapor compression type refrigeration cycle.
  • isobutane (R600a) is used as the refrigerant in the above-described freezing cycle.
  • the refrigerator 1 is provided with an upper temperature sensor 42 and a lower temperature sensor 43 for detecting the temperature inside the refrigerator compartment 3.
  • the upper temperature sensor 42 is an upper temperature detecting unit that detects the temperature of the upper portion of the refrigerating compartment 3, and is provided on the top surface or the back surface of the refrigerating chamber 3 or the upper portion of the side surface.
  • the lower temperature sensor 43 is a lower temperature detecting unit that detects the temperature of the lower portion of the refrigerating compartment 3, and is provided on the bottom surface or the back surface of the refrigerating compartment 3 or the lower portion of the side surface (below the upper temperature sensor 42).
  • the refrigerator 1 is provided with a door opening and closing sensor 41 for detecting opening and closing of the heat insulating door 8 at the hinge portion supporting the heat insulating door 8.
  • a door opening/closing sensor 41 for example, various switches that are pressed by a part of the heat insulating door 8 to open and close the contacts can be used.
  • an outside air temperature sensor 44 that detects the ambient temperature of the refrigerator 1 is integrally provided with the substrate of the door opening and closing sensor 41.
  • Fig. 3(A) is a schematic front elevational view showing the supply air passage 15, and Fig. 3(B) is a cross-sectional view taken along line A-A shown in Fig. (A).
  • the supply air passage 15 is configured such that the left and right substantially central portions of the rear surface of the refrigerating compartment 3 are branched right and left in the upper portion of the refrigerating compartment 3, and are directed downward. Further, a cold air outlet 17 for allowing cold air to flow into the refrigerating compartment 3 is formed in the supply air passage 15.
  • the cold air outlet 17 formed on the right and left air passages below the supply air passage 15 is configured to blow cold air toward the left and right oblique front. That is, the supply air passage 15 is divided by the heat insulating partition member 29, and the cold air outlet 17 is formed to have an opening on the left and right side faces of the partition member 28.
  • the inside of the refrigerator compartment 3 can be uniformly cooled. Further, since the opening of the cold air outlet 17 is not visible from the front of the refrigerator 1, it is also excellent in appearance.
  • FIG. 4 is a schematic front elevational view showing the circulation air passage 20.
  • an air outlet 21 for allowing air to flow into the refrigerating chamber is formed in the circulation air passage 20.
  • the air outlet 21 is provided with a baffle 24.
  • air is formed from the inside of the refrigerating chamber 3 to the circulation air passage.
  • the air outlet 21 is formed to extend in the width direction of the refrigerating compartment 3 and has a horizontal width which is wider than the circulation air passage 20b on the back side, so that the air curtain can be effectively formed in front of the refrigerating compartment 3.
  • the baffle 24 also forms a long form extending in the lateral direction corresponding to the air outlet 21.
  • FIG. 5(A) and (B) are schematic views showing the shutter 24 of the refrigerator 1 and the mechanism for opening and closing the shutter 24, and Fig. 5(A) is a state in which the shutter 24 is closed, and Fig. 5(B) is The state in which the shutter 24 is opened is shown.
  • the baffle plate 24 is a substantially plate-shaped member made of a synthetic resin material, and has a cross-sectional shape as shown in Figs. 5(A) and (B), and extends in the lateral direction (the vertical direction of the paper surface) of the refrigerator 1.
  • the support portion 24C On the side of the circulation air passage 20 of the baffle 24, the support portion 24C is formed in a plurality of places, and the support shaft 24d formed on the support portion 24C is rotatably supported by the partition member 28. Further, a motor 25 that opens and closes the shutter 24 via a coupling member 26 (chain mechanism) is connected to the coupling shaft 24e formed on the end side of the support portion 24C.
  • the shutter 24 can be opened and closed by rotating the motor 25. That is, as shown in Fig. 5 (A), the air outlet 21 can be blocked by the shutter 24, and as shown in Fig. 5 (B), a flow path through which the air is blown after the air outlet 21 is opened can be formed.
  • the motor 25 is, for example, a stepping motor or the like, and can be stopped at an arbitrary angle. Thereby, the flow of the air blown out from the air outlet 21 can be directed in a direction suitable for forming the air curtain, and can be controlled in a direction suitable for cooling or cooling.
  • the power transmission mechanism such as the connecting member 26 or the driving member such as the motor 25 is disposed so as to be partially buried in the heat insulating box 2.
  • the inner box 2b is partially raised toward the outside of the tank, and a recess is formed in the inside of the tank, thereby securing a space for arranging the mechanism for opening and closing the shutter 24.
  • the baffle 24 is formed in a shape such that the front edge side 24b and the rear edge side 24a are bent. That is, the substantially plate-shaped baffle 24 forms a concave surface on the circulation air passage 20 side (air flow collision surface). Thereby, the air flowing inside the circulation air passage 20 is steered with a small flow loss, and a suitable blow-out flow can be formed.
  • the surface of the baffle plate 24 is not limited to a flat shape, and may be formed, for example, in a curved shape.
  • the front portion 28d of the partition member 28 forming the air outlet 21 is not vertical but is inclined. Specifically, the front portion 28d of the partition member 28 is an inclined surface in which the upper portion is the front portion and the lower portion is the rear portion.
  • the width dimension of the baffle 24 is large. That is, even if the baffle 24 having a wide width is used, the baffle 24 is protruded toward the inside of the refrigerator 3 along the front portion 28d in a state where the shutter 24 is closed, without hindering.
  • the wind direction control function of the baffle 24 can be improved, and an appropriate blow-out flow can be formed.
  • the tuyeres 21 and the baffles 24 are disposed on the inclined surfaces thereof, so that the blown air can be efficiently guided to the rear of the refrigerating chamber 3. Thereby, the inside of the refrigerating compartment 3 can be efficiently stirred.
  • a recess 28C having a shape corresponding to the shutter 24 and having a depth corresponding to the thickness of the shutter 24 is formed.
  • FIG. 2 the basic cooling operation of the refrigerator 1 having the above configuration (the normal cooling operation in which the coolers 33 cool the respective storage compartments 3 to 7) will be described.
  • the flow of the air during the cooling operation is indicated by a broken line arrow, and the flow of the air during the circulation operation to be described later is indicated by a solid arrow.
  • the air in the cooling chamber 13 is cooled by the cooler 33 of the above-described vapor compression refrigeration cycle.
  • the air cooled by the cooler 33 is discharged from the opening 13a of the cooling chamber 13 to the supply air passage 14 by the blower 32.
  • the cold air supplied to the inside of the refrigerator compartment 3 is supplied to the vegetable compartment 7 via a connecting air passage (not shown). Further, the cold air circulating in the vegetable compartment 7 is returned to the inside of the cooling chamber 13 via the return air passage 16 and the opening 13b of the cooling chamber 13. Therefore, it is cooled again by the cooler 33.
  • a part of the cooling air discharged to the supply air passage 14 is supplied to the ice making chamber 4, the upper freezing compartment 5, and the lower freezing compartment 6.
  • the air inside the ice making compartment 4 and the upper freezing compartment 5 flows into the communicating lower freezing compartment 6, and the air inside the lower freezing compartment 6 flows to the lower portion of the lower freezing compartment 6, and passes through the opening 13b of the cooling chamber 13 to the inside of the cooling compartment 13. flow.
  • the air cooled by the cooler 33 is circulated in the storage chamber, and the food or the like is frozen or cooled and stored.
  • FIG. 6 is a side cross-sectional view showing the vicinity of the refrigerating compartment 3 in which the air curtain of the refrigerator 1 is formed.
  • solid arrows indicate the flow of air.
  • the door opening and closing sensor 41 detects that the heat insulating door 8 is opened.
  • the refrigerator 1 operates the blower 27 and opens the shutter 24. Thereby, the air in the lower portion of the refrigerating compartment 3 is sucked into the interior of the circulation air passage 20 via the return port 22, and is blown out from the air outlet 21 formed in the front portion of the refrigerator compartment 3 toward the inside of the refrigerating compartment 3.
  • the angle (opening degree) of the shutter 24 is adjusted such that the air (air curtain AC) blown from the air outlet 21 faces downward.
  • a suitable air curtain AC for preventing leakage of cold air from the inside of the refrigerating compartment 3 to the outside of the tank is formed.
  • the refrigerator 1 has a shape for supplying cold air cooled by the cooler 33 (refer to FIG. 2) to the supply air passage 15 of the refrigerating compartment 3 and the blower 32 (refer to FIG. 2).
  • the door opening and closing sensor 41 detects the closed state of the heat insulating door 8
  • the refrigerator 1 stops the blower 27, and closes the shutter 24. Thereby, the formation of the air curtain AC is ended.
  • the stop of the blower 27 and the closing operation of the shutter 24 may be performed. Further, when the blower 27 is operated from the time when the heat insulating door 8 is closed until a predetermined time elapses, the shutter 24 can be swung as will be described later with reference to Figs. 7(A) and (B). Thereby, it is possible to efficiently cool the inside of the refrigerating compartment 3 which is warmed by opening the heat insulating door 8, in particular, the portion of the accommodating basket 19 inside the heat insulating door 8.
  • FIGS. 7(A) and (B) an operation of circulating air in the refrigerating compartment 3 in a state where the heat insulating door 8 is closed will be described with reference to FIGS. 7(A) and (B).
  • the circulation of the air in the state in which the heat insulating door 8 is closed includes the following two cases: the case where the blower 27 is continuously operated after the heat insulating door 8 is opened and closed, and the state in which the heat insulating door 8 is kept closed is maintained.
  • the condition of the air in the refrigerating compartment 3 is circulated under the prescribed conditions.
  • 7(A) and (B) are diagrams for explaining air circulation inside the refrigerator compartment 3 of the refrigerator 1, and Fig. 7(A) is an example of blowing air forward, and Fig. (B) is an example of blowing air backward. .
  • the orientation of the flapper 24 can be changed with time.
  • the lower end portion of the flapper 24 may be swung back and forth, and the state of being blown forward as shown in Fig. 7 (A) and the state of being blown backward as shown in Fig. 7 (B) may be alternately and continuously changed.
  • the inside of the refrigerating compartment 3 can be more efficiently stirred.
  • blower 27 it is also possible to control the blower 27 to operate when the temperature difference detected by the upper temperature sensor 42 that detects the upper temperature of the refrigerating compartment 3 and the lower temperature sensor 43 that detects the lower temperature of the refrigerating compartment 3 exceeds a predetermined threshold. Thereby, it is possible to reliably prevent the deterioration of the quality of the food or the like due to the increase in the temperature difference between the upper and lower sides of the refrigerating compartment 3.
  • blower 27 it is also possible to control the blower 27 to operate after a predetermined period of time has elapsed after the supply of the air from the supply air passage 15 to the refrigerating compartment 3 is stopped in a state where the heat insulating door 8 is closed. Therefore, it is not necessary to provide the two temperature sensors 42 and 43 to the refrigerating compartment 3 as described above, so that the temperature difference in the refrigerating compartment 3 can be prevented from being excessively large.
  • the blower 27 is operated after a predetermined period of time has elapsed.
  • the predetermined time may be set as follows: In consideration of the heat insulating performance of the refrigerator 1, it is estimated that the temperature in the tank rises due to heat intrusion from the outside, and the allowable temperature rise is reached. By such a method, it is possible to prevent an increase in the temperature difference between the upper and lower sides in the refrigerating compartment 3, and to prevent deterioration in the quality of foods and the like.
  • the predetermined time may be determined based on the temperature around the outside of the tank detected by the outside air temperature sensor 44, and the time until the start of the cycle operation may be changed according to the surrounding environment. Thereby, the efficiency of the refrigerator 1 can be further improved.

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Abstract

一种电冰箱，其能够形成合适的空气幕防止来自冷藏室内的冷气的泄漏，并且能够将冷藏室内高效地搅拌以在均一的温度下进行冷却。电冰箱（1）在位于冷藏室（3）的顶面一侧的循环风路（20a）的前部形成的出风口（21），设置风向控制单元（24），在冷藏室（3）的门（8）打开的状态下，通过风向控制单元（24）使从出风口（21）吹出的空气朝向下方形成空气幕AC。此外，在门（8）关闭的状态下，使通过风向控制单元（24）从上述出风口吹出的空气朝向与空气幕AC形成时不同的方向。由此，能够形成合适的空气幕，防止冷藏室（3）内的冷气泄漏到外部，并且能够高效地冷却或者搅拌冷藏室（3）内部，能够缩小冷藏室（3）内的温度差进行高效的冷却保存。

Description

电冰箱
技术领域
本发明涉及一种在储藏室内冷却保存食品等的电冰箱， 特别是涉及具有空 气幕（ air curtain )功能的电冰箱。 背景技术 冷藏室的前面开口部形成空气幕（例如， 专利文献 1 )。
图 8是示出专利文献 1中公开的带有空气幕功能的家庭用电冰箱 100的冷 藏室 102附近的剖视图。 如图 8所示那样， 家庭用电冰箱 100在冷藏室 102的 顶面具备顶面通道 111 , 该顶面通道 111使由冷却器 104冷却并通过鼓风扇 105 送出的空气流向冷藏室 102。 而且， 在顶面通道 111的前部形成的冷气出风口 107配置有使冷气向下方吹出的横流扇 112。
当使用者打开门 101时，家庭用电冰箱 100起动鼓风扇 105以及横流扇 112。 由此， 从冷气出风口 107向下方吹出冷气， 在冷藏室 102的前面开口部 103形 成空气幕 108。 通过该空气幕 108能够防止冷藏室 102内的冷气泄漏到箱外。
此外， 在门 101关闭的状态下， 家庭用电冰箱 100与以往的一般电冰箱同 样地进行冷却运转。 即， 若冷藏室 102内的温度上升， 则使鼓风扇 105以及没 有图示的压缩机运转。 由此， 由冷却器 104冷却的冷气经由顶面通道 111以及 冷气出风口 107,此外经由背面管路 110以及在背面管路 110上形成的冷气出风 口 109供给给冷藏室 102, 进行冷藏室 102内的冷却。 若冷藏室 102内的温度降 低到规定值， 则家庭用电冰箱 100就停止鼓风扇 105以及没有图示的压缩机的 运转。
现有技术文献
专利文献
专利文献 1 : 日本特开 2005-77008号公报（第 4-5页， 第 3图）
然而， 现有技术的电冰箱中用于形成空气幕的构成在门关闭的状态下的通 常的保冷时， 存在无法形成适合冷却和保冷的有效的气流这一问题。 即， 为了获得适宜的空气幕效果，正好需要恰当地设定空气的吹出速度（吹 出气流的速度以及方向） 时， 适合冷却和保冷的气流却不一定与适合该空气幕 形成的气流一致。
具体地说， 在门打开的状态下， 使空气从冷藏室的顶面前部朝向下方维持 适宜的流速到达冷藏室的底面地吹出， 形成空气幕。 由此， 如上述那样， 能够 防止冷藏室内的冷气泄漏到箱外。 但是， 开门时位于空气幕的外侧的门内侧的 容纳筐部分由于直接暴露到外部空气中所以冷气会跑掉而变暖起来。 因此， 关 上门之后马上需要优先有效地冷却门内侧的容纳筐部分。 但是， 在以往的用于 空气幕形成的空气吹出中， 对容纳筐部分特别是位于最上层的容纳筐高效地吹 冷气是困难的。
此外反过来， 当为了形成适宜冷却的气流而使空气幕用的空气吹出朝向前 方时， 无法在门打开的状态下形成适宜的空气幕， 箱内的冷气会泄漏而降低电 冰箱的效率。
此外， 一般即使在门关闭的状态下， 由于热量经由电冰箱的隔热板从箱外 向箱内侵入， 所以电冰箱内的温度緩緩上升， 在冷藏室的内部产生温度差 （上 部为高温下部为低温）。 当这样的冷藏室内的温度差过大时就会成为使在那里冷 却保存的食品等的品质恶化的原因。 因此， 考虑为了缩小冷藏室内的温度差而 使冷藏室内的空气循环的方法。 然而， 在现有技术的电冰箱中， 通过空气幕用 的气流来高效地使冷藏室内的空气循环是困难的。 即， 由于为了形成仅集中于 下方的气流而从形成于冷藏室的顶面前部的一处出风口吹出冷气， 因而不能对 冷藏室内整体高效地进行搅拌。
此外， 为了消除冷藏室内的温度差， 与通常的冷却运转相同， 也考虑了使 空气在电冰箱内整体循环， 即， 在从冷却器经由冷气供给风路， 流向冷藏室、 蔬菜室等， 并从返回风路返回到冷却器的路线整体循环的方法。 然而， 当使空 气在冷却路线整体循环时， 各风路和各储藏室的空气混合而使热损失增大， 成 为增加压缩机的启停次数而使耗电量增加的原因。 发明内容
本发明是鉴于上述的情况而做出的， 其目的在于提供一种能够形成合适的 空气幕来防止来自冷藏室内的冷气的泄漏， 并且能够高效地搅拌冷藏室内且在 均一的温度下进行冷却的电冰箱。 本发明的电冰箱具备： 冷藏室， 在前面具有门； 供给风路， 将由冷却器冷 却的空气供给到上述冷藏室； 循环风路， 配置于上述冷藏室的顶面侧以及背面 侧； 送风机， 设置于上述循环风路的内部， 将上述循环风路内的空气从上述背 面侧向上述顶面侧输送； 出风口， 形成于上述顶面侧的上述循环风路的前部， 使空气从上述循环风路流向上述冷藏室； 返回口， 形成于上述背面侧的上述循 环风路， 使空气从上述冷藏室流向上述循环风路； 以及风向控制单元， 设置于 上述出风口， 能调整向上述冷藏室吹出的空气方向， 在上述门打开的状态下， 使上述送风才 Λ ^转， 并且通过上述风向控制单元使从上述出风口吹出的空气朝 向下方形成空气幕， 在上述门关闭的状态下， 使上述送风机运转， 并且通过上 述风向控制单元使从上述出风口吹出的空气朝向与上述门打开状态不同的方向 使上述冷藏室内的空气循环。
釆用本发明的电冰箱， 在位于冷藏室的顶面侧的循环风路的前部形成的出 风口， 设置风向控制单元， 在上述冷藏室的门打开的状态下， 通过上述风向控 制单元使从上述出风口吹出的空气朝向下方形成空气幕。 即， 通过上述风向控 制单元控制成为适宜空气幕形成的气流。 由此， 能够形成合适的空气幕来防止 冷藏室内的冷气泄漏到外部。
此外， 在上述门关闭的状态下， 通过上述风向控制单元使从上述出风口吹 出的空气朝向与上述门打开的状态不同的方向。 即， 通过上述风向控制单元能 够将从上述出风口吹出的气流控制为适宜冷却和保冷的气流。 具体地说， 为了 使冷气吹向设置于上述门的内侧的容纳筐， 也可以通过上述风向控制单元使气 流朝向前方。 或者， 也可以使吹出方向朝向上述冷藏室内的后方。 由此， 通过 从上述循环风路的上述出风口吹出的空气， 能够有效地冷却或搅拌冷藏室内， 能够使冷藏室内的温度差缩小而进行高效率的冷却保存。
此外， 上述循环风路构成为区别于用于将由冷却器冷却的空气供给到上述 冷藏室的供给风路的独立的路线。 而且， 在上述循环风路的内部， 具备区别于 用于使由冷却器冷却的空气循环的冷气供给用送风机的独立的送风机。 由此， 能够与将上述冷却器冷却的空气送往上述冷藏室的冷却运转不相关地形成空气 幕， 能够防止冷却器冷却的冷气直接泄漏到箱外。
此外， 即使在上述门关闭的状态下， 也能够与冷却运转不相关地使冷藏室 内的空气循环。 因此， 在停止从上述供给风路向上述冷藏室的空气供给的状态 下也可以使上述送风机运转。 由此， 无需进行冷却运转就使冷藏室内的上下温 度差缩小， 能够防止食品等的品质恶化。
此外， 在配置于上述冷藏室的背面侧的上述循环风路上， 形成有从上述冷 藏室向上述循环风路流动空气的返回口。 由此， 不需要向经由冷却器和蔬菜室 等的冷却系统整体循环空气， 就能够进行空气幕的形成和冷藏室内的搅拌。
此外， 在上述门关闭的状态下， 也可以使上述送风机运转并且通过上述风 向控制单元使从上述出风口吹出的空气的方向变化。 例如， 也可以使气流的方 向周期性地从前方向后方或者其反向緩緩地变化。 由此， 能够搅拌冷藏室内的 空气有效地实现温度的均一化。
此外， 也可以具备检测上述冷藏室的上部的温度的上部温度检测单元、 以 及检测上述冷藏室的下部的温度的下部温度检测单元， 在上述门关闭的状态下， 若用上述两个温度检测单元检测的温度差超过规定的阈值， 则使上述送风机运 转。 由此， 能够防止因冷藏室内的上下温度差增大而导致的食品等的品质恶化。
此外， 也可以在上述门关闭的状态下， 若从停止从上述供给风路向上述冷 藏室的空气供给后经过了规定的时间， 则使上述送风机运转。 由此， 无需如上 述那样在冷藏室的上下设置温度检测单元， 就能够防止冷藏室内的温度差过大。
此外， 也可以在上述门关闭的状态下， 若从停止上述冷却器的冷却后， 即 从停止压缩机的运转后， 经过了规定的时间， 则使上述送风机运转。 通过这样 的方法， 也能够防止食品等的品质恶化。 附图说明
图 1是本发明的实施方式的电冰箱的正面外观图。 图 3是示出向本发明的实施方式的电冰箱的冷藏室的供给风路的（A )正面 略图、 （B ) A-A线剖视图。 图 5是示出本发明的实施方式的电冰箱的 （A ) 关闭挡板（flap ) 的状态、 ( B ) 打开挡板的状态的挡板以及开闭机构的概略图。
图 6是说明本发明的实施方式的电冰箱的空气幕形成的冷藏室附近的侧面 剖视图。
图 7是示出说明本发明的实施方式的电冰箱的冷藏室内的空气循环的 （A ) 向前方吹出的例、 （B ) 向后方吹出的例子的冷藏室附近的侧面剖视图。
图 8是示出现有技术的电冰箱的例子的冷藏室附近的侧面剖视图。
附图标记说明
1 电冰箱、 2 隔热箱体、 3 冷藏室、 4制冰室、 5 上层冷冻室、 6 下层冷冻 室、 7 蔬菜室、 8 隔热门、 13 冷却室、 15供给风路（冷藏室用）、 20循环风 路、 20a顶面侧的循环风路、 20b 背面侧的循环风路、 21 出风口、 22返回口、 24挡板、 27 送风机、 33 冷却器、 42 上部温度传感器、 43 下部温度传感器、 AC 空气幕。
具体实施方式
以下， 基于附图对本发明的实施方式的电冰箱进行详细说明。
图 1是示出本实施方式的电冰箱 1的概略构造的正面外观图。 图 2是电冰 箱 1的右侧面剖视图。
如图 1所示， 电冰箱 1具备作为主体的隔热箱体 2, 在该隔热箱体 2的内部 形成有储藏食品等的储藏室。 储藏室的内部根据保存温度或用途划分为多个容 纳室 3〜7。 最上层为冷藏室 3、 其下层左侧为制冰室 4, 右侧为上层冷冻室 5 , 其再下层为下层冷冻室 6, 最下层为蔬菜室 7。
隔热箱体 2的前面开口， 在与上述各容纳室 3〜7对应的上述开口部上分别 开闭自如地设有隔热门 8〜12。隔热门 8a、 8b为分割并挡住冷藏室 3的前面的门， 隔热门 8a的左上下部以及隔热门 8b的右上下部由隔热箱体 2旋转自如地支撑。 此外， 隔热门 9〜12由隔热箱体 2支撑成向电冰箱 1的前面方拉出自如。
如图 2所示， 作为电冰箱 1的主体的隔热箱体 2由在前面具有开口部的钢 板制的外箱 2a、 在该外箱 2a的内侧与其具有间隙地配设的、 在前面具有开口部 的合成树脂制的内箱 2b、 以及填充发泡于上述外箱 2a和内箱 2b的间隙中的发 泡聚氨酯制的隔热材料 2C构成。 另外， 各隔热门 8〜12也釆用与隔热箱体 2同 样的隔热构造。
冷藏室 3与位于其下层的制冰室 4以及上层冷冻室 5之间通过隔热隔板 36 分隔。 隔热隔板 36为合成树脂的成型品， 在其内部填充有隔热材料。
此外， 制冰室 4与上层冷冻室 5之间通过隔板（附图中未示出 )分隔。 此 外， 制冰室 4以及上层冷冻室 5与设置在其下层的下层冷冻室 6以冷气流通自 如地方式连通。 并且， 下层冷冻室 6与蔬菜室 7之间通过隔热隔板 37区分。 此外， 在内箱 2b的内部的冷藏室 3的顶面以及背面上， 由合成树脂制的分 隔构件 28划分形成循环风路 20。 在循环风路 20的内部配设有从背面侧的循环 风路 20b向顶面侧的循环风路 20a输送空气的送风机 27。
送风机 27为例如离心式等涡轮式送风机。 此外， 送风机 27配置在冷藏室 3 的上方内侧。 具体地说， 送风机 27以吸入口朝向斜下方的方式倾斜配置在连接 背面侧的循环风路 20b与顶面侧的循环风路 20a的风路中。 这样， 通过釆用离 心式送风机作为送风机 27, 并配置在食品的取出困难的冷藏室 3的上方内侧角 落部位， 从而能够确保容纳食品的便利性。
此外， 通过将送风机 27以使空气向斜上方吹出的方式进行设置， 从而使吹 出的空气在顶面侧的循环风路 20a内沿着构成该风路的顶面的内箱 2b流动。 由 此， 可以通过后述的挡板（flap ) 24的开闭动作来调整风向。
在顶面侧的循环风路 20a的前部形成有使空气从循环风路 20的内部向冷藏 室 3的内部流动的出风口 21。 具体地说， 出风口 21为在顶面侧的分隔构件 28 的前部形成的开口， 将循环风路 20与冷藏室 3连通。
此外， 在背面侧的循环风路 20b的下部形成有使空气从冷藏室 3的内部向 循环风路 20的内部流动的返回口 22。 具体地说， 返回口 22为形成于背面侧的 分隔构件 28的下部的开口， 将冷藏室 3与循环风路 20连通。
在出风口 21中配设有作为风向控制单元的挡板 24,所述风向控制单元的能 够调整从循环风路 20向冷藏室 3吹出的空气的方向。 挡板 24呈大致板状， 通 过改变挡板 24的朝向， 能够适宜地控制从出风口 21吹出的空气的朝向。
此外， 在冷藏室 3的背面、 循环风路 20的更内侧， 形成有由合成树脂制的 分隔构件 29划分的供给风路 15。 分隔构件 29由例如发泡聚苯乙烯等构成， 并 且具有对循环风路 20与供给风路 15之间进行隔热的功能。
在制冰室 4、上层冷冻室 5以及下层冷冻室 6的内侧， 形成有由合成树脂制 的分隔构件 38划分的供给风路 14。供给风路 14与供给风路 15通过风门（ damper ) 18 (风路开闭器）连通。 风门 18用于控制向冷藏室 3供给的冷气的流量， 适当 地维持冷藏室 3内部的温度。
在内箱 2b内部的供给风路 14的更内侧设置有由分隔构件 39划分形成的冷 却室 13。 在冷却室 13上部的分隔构件 39上形成有连接冷却室 13与供给风路 14的开口 13a,在开口 13a中配设有用于向各储藏室 3〜7供给冷气的送风机 32。 另一方面， 在冷却室 13的下方， 形成有将来自储藏室的返回冷气吸入冷却室 13 的内部的开口 13b。
并且， 在冷却室 13的内部配置有用于对循环的空气进行冷却的冷却器 33 (蒸发器）。 冷却器 33通过制冷剂配管与压缩器 31、 散热器（未图示）、 以及膨 胀阀 （毛细管）（未图示）连接， 构成蒸汽压缩式的冷冻循环回路。 此外， 在本 实施方式的电冰箱 1中， 使用异丁烷（R600a )作为上述冷冻周期的制冷剂。
此外， 电冰箱 1具备检测冷藏室 3内部的温度的上部温度传感器 42以及下 部温度传感器 43。上部温度传感器 42为检测冷藏室 3的上部的温度的上部温度 检测单元， 设置在冷藏室 3的顶面或者背面或者侧面的上部。 下部温度传感器 43为检测冷藏室 3的下部的温度的下部温度检测单元， 设置在冷藏室 3的底面 或者背面或者侧面的下部 （比上部温度传感器 42更下方）。 通过设置上部温度 传感器 42以及下部温度传感器 43 , 能够检测冷藏室 3内部的上下温度差。
此外， 电冰箱 1在支撑隔热门 8的铰接部上具备检测隔热门 8的开闭的门 开闭传感器 41。 作为门开闭传感器 41 , 例如可以釆用被隔热门 8的一部分按压 而开闭接点的各种开关。 此外， 在上述铰接部附近， 与门开闭传感器 41的基板 一体地配设有检测电冰箱 1的周围温度的外部空气温度传感器 44。
图 3 ( A ) 为示出供给风路 15的概略的正面略图， 同图 （B )是同图 （A ) 中示出的 A-A线剖视图。
如图 3 ( A )所示， 供给风路 15构成为： 通过冷藏室 3的背面的左右大致 中央部分， 在冷藏室 3的上部左右分支后， 朝向下方。 此外， 在供给风路 15上 形成有使冷气向冷藏室 3流动的冷气出风口 17。
如图 3 ( A ) 以及（B ) 所示， 在朝向供给风路 15的下方的左右的风路上 形成的冷气出风口 17构成为朝向左右斜前方吹出冷气。 即， 供给风路 15通过 具有隔热性的分隔构件 29划分形成， 冷气出风口 17形成得在分隔构件 28的左 右侧面上具有开口。
这样， 通过从冷气出风口 17向左右斜前方吹出空气， 能够均一地冷却冷藏 室 3的内部。 此外， 由于从电冰箱 1的前方看不到冷气出风口 17的开口， 因而 在美观上也很好。
如图 3 ( B )所示， 在冷却风路 15的前方由分隔构件 29隔热地划分形成背 面侧的循环风路 20b。 循环风路 20b具有与供给风路 15从正面看一部分重叠的 部分。 但是， 冷气出风口 17形成得与循环风路 20b从正面看不重叠。 图 4为示出循环风路 20的概略的正面略图。 如图 4所示， 在循环风路 20 上形成有使空气向冷藏室流动的出风口 21 , 如上所述， 在出风口 21上设置有挡 板 24。 此外， 在循环风路 20的下部形成有使空气从冷藏室 3的内部向循环风路
20的内部流动的返回口 22。
另外， 出风口 21形成了向冷藏室 3的宽度方向延伸、 左右宽度比背面侧的 循环风路 20b更宽的、 横长的形态， 以便在冷藏室 3的前面能够有效地形成空 气幕。 挡板 24也对应出风口 21形成了向横向延伸的长长的形态。
图 5 ( A ) 以及（B )为示出电冰箱 1的挡板 24以及开闭挡板 24的机构的 概略图， 同图 （A ) 为关闭挡板 24的状态， 同图 （B ) 为示出挡板 24打开的状 态。
挡板 24为由合成树脂材料构成的大致板状的构件，具有图 5 ( A )以及（B ) 所示的剖面形状， 向电冰箱 1的横向 （纸面垂直方向）延伸。
在挡板 24的循环风路 20侧， 支撑部 24C突出形成于多处， 在支撑部 24C 上形成的支撑轴 24d由分隔构件 28可转动地支撑。 此外， 在支撑部 24C的端部 一侧上形成的连结轴 24e上连接有借助连结构件 26 (链机构 )开闭挡板 24的 马达 25。
由此， 可以通过使马达 25旋转， 开闭挡板 24。 即， 如图 5 ( A )所示， 可 以利用挡板 24堵塞出风口 21 , 并且如图 5 ( B ) 所示， 可以形成出风口 21打 开后空气吹出的流路。此外， 马达 25为例如步进马达等， 能够以任意角度停止。 由此， 能够使从出风口 21吹出的空气的流动朝向适于形成空气幕的方向， 并且 能够控制在适于冷却或保冷的方向。
另外， 连结构件 26等的动力传递机构或马达 25等的驱动部件配置成一部 分埋入隔热箱体 2中。 即， 内箱 2b通过一部分向箱外侧隆起、 向箱内侧形成凹 部， 从而确保用于配置开闭挡板 24的机构的空间。 通过釆用这样的构成， 能够 广泛确保冷藏室 3的容纳空间。
此外，挡板 24形成了如前边缘侧 24b与后边缘侧 24a折弯那样的形状。即， 大致板状的挡板 24在循环风路 20侧 （空气流动碰撞面）形成凹面。 由此， 流 动于循环风路 20的内部的空气以少的流动损失转向，能够形成合适的吹出流动。 另外， 挡板 24的表面并不只限定于平面状， 例如也可以形成为曲面状。 此外， 形成出风口 21的分隔部件 28的前部 28d并非垂直， 而是倾斜设置。 具体地说， 分隔构件 28的前部 28d是上部成为前方、 下部成为后方那样的倾斜 面。由此， 可以确保挡板 24的宽度尺寸较大。 即， 即使釆用宽度宽的挡板 24, 在关闭挡板 24的状态下， 也使挡板 24沿着前部 28d, 挡板 24向电冰箱 3的内 部突出而不会造成妨碍。 这样， 通过釆用宽度宽的挡板 24, 能够提高挡板 24的 风向控制功能， 能够形成适宜的吹出流动。
此外，通过使分隔构件 28的前部 28d倾斜得上部成为前方、下部成为后方， 在其倾斜面上配置出风口 21以及挡板 24,可以高效地将吹出的空气导向冷藏室 3的后方。 由此， 能够有效地搅拌冷藏室 3的内部。
此外， 在分隔构件 28的出风口 21周围， 形成有对应挡板 24的形状、 具有 相当于挡板 24厚度的深度的凹部 28C。 由此， 可以如图 5 ( A ) 所示， 在完全 关闭挡板 24时， 缩小挡板 24与分隔构件 28的阶梯差 （挡板 24向冷藏室 3— 侧突出）， 提高外观设计性。
接下来，再次参照图 2,对于具有上述构成的电冰箱 1的基本的冷却动作（借 助于冷却器 33冷却各储藏室 3〜7的通常的冷却运转 )进行说明。需要说明的是， 在图 2中， 将冷却运转时的空气的流动用虚线箭头表示， 并将后述的循环运转 时的空气的流动用实线箭头表示。
首先， 通过上述的蒸汽压缩式冷冻循环回路的冷却器 33进行冷却室 13内 的空气的冷却。 借助于冷却器 33冷却的空气， 通过送风机 32从冷却室 13的开 口 13a向供给风路 14排出。
然后， 排出到供给风路 14的冷却空气的一部分， 通过风门 18调整为适当 的流量， 流向供给风路 15 , 并向冷藏室 3供给。 由此， 能够在适当的温度下冷 却保存储藏在冷藏室 3的内部的食品等。
供给至冷藏室 3的内部的冷气经由未图示的连结风路供给到蔬菜室 7。并且， 在蔬菜室 7中循环了的冷气经由返回风路 16、 以及冷却室 13的开口 13b, 返回 到冷却室 13的内部。 因此， 再次被冷却器 33冷却。
另一方面， 排出到供给风路 14的冷却空气的一部分被供给到制冰室 4、 上 层冷冻室 5以及下层冷冻室 6。制冰室 4以及上层冷冻室 5内部的空气向连通的 下层冷冻室 6流动， 下层冷冻室 6内部的空气向下层冷冻室 6的下部流动， 经 由冷却室 13的开口 13b向冷却室 13的内部流动。 如上述说明的那样， 由冷却器 33冷却的空气循环于储藏室内， 进行食品等 的冷冻或冷却保存。
接下来， 参照图 6, 对于使用者打开隔热门 8时、 形成空气幕的动作进行说 明。 图 6为说明电冰箱 1的空气幕形成的冷藏室 3附近的侧面剖视图。 在图 6 中， 实线箭头表示空气的流动。
首先， 当使用者打开隔热门 8时， 通过门开闭传感器 41检测到隔热门 8被 打开。 当用门开闭传感器 41检测出隔热门 8的打开状态时， 电冰箱 1运转送风 机 27并且打开挡板 24。 由此， 冷藏室 3的下部的空气经由返回口 22吸引到循 环风路 20的内部， 从在冷藏室 3的顶面前部形成的出风口 21向冷藏室 3的内 部吹出。
在此， 如图 6所示， 挡板 24的角度（开度）调节成使从出风口 21吹出的 空气（空气幕 AC )朝向下方。 由此， 形成了用于防止从冷藏室 3的内部向箱外 泄漏冷气的合适的空气幕 AC。
另外， 如上述所述， 电冰箱 1除了用于将由冷却器 33 (参照图 2 )冷却的 冷气供给到冷藏室 3的供给风路 15和送风机 32 (参照图 2 )之外， 具有用于 形成空气幕 AC的独立的循环风路 20以及送风机 27。 因此， 电冰箱 1不管是否 在进行上述的通常的冷却运转， 都能够执行形成空气幕 AC的动作。
然后， 当使用者关闭隔热门 8时， 通过门开闭传感器 41检测到隔热门 8已 关闭。 当用门开闭传感器 41检测出隔热门 8的关闭状态时， 电冰箱 1停止送风 机 27, 并且关闭挡板 24。 由此， 结束空气幕 AC的形成。
另夕卜， 也可以在从隔热门 8关闭后经过了规定的时间之后， 执行送风机 27 的停止以及挡板 24的关闭动作。 此外， 在从隔热门 8关闭后直到经过了规定的 时间为止运转送风机 27的情况下， 参照图 7 ( A ) 以及（B )如后所述， 也可 以使挡板 24摆动。 由此， 能够高效地冷却因打开隔热门 8而变暖的冷藏室 3的 内部， 特别是隔热门 8的内侧的容纳筐 19部分。
接下来， 参照图 7 ( A ) 以及（B ), 对于在关闭隔热门 8的状态下、 使冷 藏室 3内的空气循环的动作进行说明。 在此， 关闭隔热门 8的状态的空气的循 环包括如下两种情况： 在将隔热门 8—旦打开并关闭后持续运转送风机 27规定 时间的情况、 以及在维持关闭隔热门 8的状态下根据规定的条件循环冷藏室 3 内的空气的情况。 图 7 ( A ) 以及（B )为说明电冰箱 1的冷藏室 3内部的空气循环的图， 同 图 （A ) 为向前方吹出空气的例子， 同图 （B ) 示出向后方吹出空气的例子。
在运转送风机 27的同时， 如图 7 ( A )所示， 通过将挡板 24的下部向前 方打开， 从而能够从出风口 21向前方吹出空气。 由此， 例如， 如前所述， 能够 使冷气直接吹向因打开隔热门 8而变暖的容纳筐 19, 高效地冷却该部分。 这样， 电冰箱 1由于具备挡板 24,因此能够高效且迅速地冷却最上层的容纳筐 19的内 部， 所述最上层的容纳筐 19根据用于形成空气幕 AC (参照图 6 ) 的空气流动 难以进行冷却。
此外 , 在运转送风机 27的同时， 如图 7 ( B )所示 , 通过将挡板 24的下部 向后方打开， 从而能够从出风口 21向后方吹出空气。 由此， 能够将冷藏室 3下 部的空气从返回口 22 (参照图 7 ( A ) )吸引到循环风路 20, 从出风口 21输 送到冷藏室 3的上部后方， 使冷藏室 3内部的空气循环并搅拌。 其结果是， 能 够缩小由于来自箱外的热侵入而产生的冷藏室 3内部的上下温度差。
此外， 如上所述， 由于挡板 24可以调整为任意的角度（开度）， 因而可以 使挡板 24的朝向随着时间发生变化。 即， 也可以使挡板 24的下端部前后摆动， 交替地连续地改变如图 7 ( A )那样向前方吹出的状态、 和如图 7 ( B )那样向 后方吹出的状态。 由此， 能够更有效地搅拌冷藏室 3的内部。
此外， 也可以控制成： 当通过检测冷藏室 3的上部温度的上部温度传感器 42以及检测冷藏室 3的下部温度的下部温度传感器 43检测出的温度差，超出规 定的阈值时， 运转送风机 27。 由此， 能够可靠地防止由于冷藏室 3的上下温度 差增大而导致的食品等的品质恶化。
此时， 不需要使冷气在蔬菜室 7 (参照图 2 )和冷却室 13 (参照图 2 ) 中 循环， 并且不需要运转压缩机 31 (参照图 2 )进行借助冷却器 33 (参照图 2 ) 的冷却， 就能够使冷藏室 3内的空气循环以实现温度的均一化。 由此， 能够减 少热损失， 抑制压缩机 31的启停次数， 减少消耗电力。
此外， 也可以控制成： 在隔热门 8关闭的状态下， 若从停止从供给风路 15 向冷藏室 3的空气的供给后经过了规定的时间， 则使送风机 27运转。 由此， 不 需要如上述那样给冷藏室 3设置两个温度传感器 42、 43 , 从而能够防止冷藏室 3内的温度差过大。
此外， 也可以控成： 在隔热门 8关闭的状态下， 若从停止借助冷却器 33的 冷却后， 即从停止压缩机 31的运转后， 经过了规定的时间， 则使送风机 27运 转。 规定的时间只要以如下方式设定即可： 考虑电冰箱 1的隔热性能， 推断由 于来自外部的热侵入而箱内温度上升的时间 , 达到可允许的温度上升的范围。 釆用这样的方法， 也能够防止冷藏室 3内的上下温度差增大， 防止食品等的品 质恶化。
另外， 在这种情况下， 也可以以通过外部空气温度传感器 44检测的箱外的 周围的温度等为基准来确定上述规定的时间， 根据周围的环境改变直到循环运 转开始为止的时间。 由此， 能够进一步提高电冰箱 1的效率。
以上， 虽然对本发明的实施方式的电冰箱进行了说明， 但本发明并不限定 于此， 在不脱离本发明的要旨的范围内， 可以进行各种变更。

Claims

权 利 要 求 书
1. 一种电冰箱， 其特征在于， 具备：
冷藏室， 在前面具有门；
供给风路， 将由冷却器冷却的空气供给到上述冷藏室；
循环风路， 配置于上述冷藏室的顶面侧以及背面侧；
送风机， 设置于上述循环风路的内部， 将上述循环风路内的空气从上述背 面侧向上述顶面侧输送；
出风口， 形成于上述顶面侧的上述循环风路的前部， 使空气从上述循环风 路流向上述冷藏室；
返回口， 形成于上述背面侧的上述循环风路， 使空气从上述冷藏室流向上 述循环风路； 以及
风向控制单元， 设置于上述出风口， 能调整向上述冷藏室吹出的空气方向， 在上述门打开的状态下， 使上述送风机运转， 并且通过上述风向控制单元 使从上述出风口吹出的空气朝向下方形成空气幕，
在上述门关闭的状态下， 使上述送风机运转， 并且通过上述风向控制单元 使从上述出风口吹出的空气朝向与上述门打开状态不同的方向使上述冷藏室内 的空气循环。
2.根据权利要求 1所述的电冰箱， 其特征在于，
在上述门关闭的状态下， 使上述送风机运转， 并且通过上述风向控制单元 使从上述出风口吹出的空气的方向发生变化。
3.根据权利要求 1或 2所述的电冰箱， 其特征在于，
在上述门关闭的状态下， 在停止从上述供给风路向上述冷藏室的空气供给 的状态下使上述送风机运转。
4.根据权利要求 1至 3中任一项所述的电冰箱， 其特征在于， 具备： 上部温度检测单元， 检测上述冷藏室的上部的温度； 以及
下部温度检测单元 , 检测上述冷藏室的下部的温度，
在上述门关闭的状态下， 若由上述上部温度检测单元检测的温度和由上述 下部温度检测单元检测的温度之差超出规定的阈值， 则使上述送风机运转。
5.根据权利要求 1至 3中任一项所述的电冰箱， 其特征在于，
在上述门关闭的状态下， 若在停止从上述供给风路向上述冷藏室的空气供 给后经过了规定的时间， 则使上述送风机运转。
6. 根据权利要求 1至 3中任一项所述的电冰箱， 其特征在于，
在上述门关闭的状态下， 若在停止借助于上述冷却器的冷却后经过了规定 的时间， 则使上述送风机运转。
PCT/CN2014/074620 2013-06-14 2014-04-02 电冰箱 WO2014198152A1 (zh)

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