WO2018010394A1 - 一种冰箱 - Google Patents
一种冰箱 Download PDFInfo
- Publication number
- WO2018010394A1 WO2018010394A1 PCT/CN2016/113465 CN2016113465W WO2018010394A1 WO 2018010394 A1 WO2018010394 A1 WO 2018010394A1 CN 2016113465 W CN2016113465 W CN 2016113465W WO 2018010394 A1 WO2018010394 A1 WO 2018010394A1
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- WO
- WIPO (PCT)
- Prior art keywords
- fan
- fan cover
- air
- compartment
- refrigerator
- Prior art date
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Classifications
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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
- 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
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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
- 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
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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
- 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
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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
- 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
- F25D2317/068—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 fans
- F25D2317/0681—Details thereof
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 capable of efficiently cooling a plurality of storage compartments by a cooler.
- a refrigerator in which, for example, a cold air cooled by a cooler is supplied to a storage compartment divided into a plurality of storage compartments having different cold temperatures such as a refrigerating compartment and a freezing compartment.
- a blower is provided in a blower port of a cooling chamber in which a cooler is housed, and cold air sent from the blower is branched and supplied to the refrigerator compartment and the freezer compartment.
- FIG. 11 and 12 schematically show the refrigerator 100 described in this document.
- the refrigerator compartment 101, the freezing compartment 102, and the vegetable compartment 103 are formed from the upper.
- a cooling chamber 104 in which the cooler 108 is housed is formed on the back side of the freezing compartment 102, and an opening 106 for supplying cold air to each storage compartment is formed in the divided wall 105 of the divided cooling chamber 104 and the freezing compartment 102.
- a blower fan 107 that blows cold air is disposed in the opening 106, and a fan cover 110 that covers the blower fan 107 is disposed on the freezer compartment 102 side.
- a baffle 114 is disposed in the middle of the air passage 109 through which the cold airflow supplied to the refrigerating compartment 101 passes.
- a concave portion 111 having a substantially quadrangular shape is formed, and an upper portion of the concave portion 111 is partially cut away to form an opening portion 113.
- the opening 113 of the fan cover 110 communicates with the air passage 109 on the refrigerator main body side.
- the refrigerator 100 of the above configuration operates as follows. Referring to Fig. 11, first, when both the refrigerating compartment 101 and the freezing compartment 102 are cooled, the fan cover 110 is separated from the blower fan 107, the shutter 114 is opened, and the blower fan 107 is rotated in this state. Then, a part of the cold air cooled by the internal cooler 108 of the cooling chamber 104 is blown to the freezing compartment 102 by the wind force of the blower fan 104. Further, the other portion of the cold air is blown to the refrigerating chamber 101 via the air passage 109, the baffle 114, and the air passage 109. Thereby, both the freezing compartment 102 and the refrigerating compartment 101 are cooled.
- the blower fan 107 is covered by the fan cover 110, the shutter 114 is opened, and in this state, the cool air cooled by the cooler 108 is blown by the blower fan 107.
- the opening portion 113 formed in the upper portion of the fan cover 110 is formed to communicate with the air passage 109. Therefore, as shown in FIG. 11, the cold air blown by the blower fan 107 is supplied to the refrigerating compartment 101 via the opening 113 (see FIG. 12), the shutter 114, and the air passage 109.
- an embodiment of the present invention provides a refrigerator having: a plurality of storage compartments; a cooler; Cooling air supplied to the storage compartment via a supply duct; a cooling chamber configured with the cooler, a blower port connected to the storage compartment; and a blower disposed at the air supply port; a fan cover covering the blower from an outer side of the cooling chamber to ensure an opening of the air flowing for cooling and blocking the air supply port, wherein the fan cover blocks the air supply port
- the opening portion of the fan guard and the air supply duct are connected via an intake pipe.
- the blower has a fan that rotates in a predetermined direction by a motor, and the suction pipe is in a position opposite to a direction opposite to a rotation direction of the fan and a portion of the fan cover The opening is connected.
- an end portion of the air suction pipe overlaps an end portion of the fan cover.
- the refrigerator further has a guide pin slidably penetrating the fan cover, the fan cover having a main face having a substantially quadrangular shape, from the main face toward the The side surface portion extending on the blower side and the support hole through which the guide pin passes are disposed, and the support hole of the fan cover is disposed at a position outside the side surface portion.
- the support hole has a first support hole and a second support hole, wherein the first support hole is formed at an angle adjacent to a corner portion where the opening portion is biased The second support hole is formed at a corner portion opposed to the first support hole.
- the fan cover is disposed to be inclined upward and rearward, and an inclined surface is formed at an inner lower end portion of the fan cover.
- the blower is an axial flow fan.
- the present invention has the following beneficial technical effects:
- the air cooled by the cooler is introduced into the air supply duct on the refrigerator main body side through the opening of the fan cover and the intake pipe. Therefore, leakage of the cooled air can be suppressed, and the cooling efficiency of the storage compartment can be improved. For example, since the air to be supplied to the refrigerating compartment is prevented from leaking from the freezer compartment side, energy saving can be improved.
- the air suction pipe and a part of the fan cover are overlapped to improve the airtightness of the connecting portions of the two sides, and when the fan cover is blocked by the fan, when the cold air is supplied to the air supply duct, the cold air is suppressed from the air suction pipe. Leakage at the connection with the fan cover improves cooling efficiency.
- the corner portion in which the opening portion is biased and the corner portion in which the support hole is formed are designed as different corner portions, thereby reducing the fact that the support hole blocks air circulation inside the fan cover.
- FIG. 1 is a front appearance view of a refrigerator according to an embodiment of the present invention.
- FIG. 2 is a side cross-sectional view showing a schematic configuration of a refrigerator according to an embodiment of the present invention
- FIG. 3 is a front schematic view for explaining a supply duct of a refrigerator according to an embodiment of the present invention.
- FIG. 4 is a side cross-sectional view showing a structure in the vicinity of a cooling chamber of a refrigerator according to an embodiment of the present invention
- Figure 5 is an exploded perspective view of a shielding device used in a refrigerator according to an embodiment of the present invention.
- FIG. 6 is a perspective view of a shielding device used in a refrigerator according to an embodiment of the present invention, wherein (A) is a perspective view of the shielding device in an open state, and (B) is a perspective view of the shielding device in a closed state;
- Figure 7 is a front elevational view of a screening device employed in a refrigerator in accordance with an embodiment of the present invention.
- Figure 8 is a perspective view of a shielding device used in a refrigerator according to an embodiment of the present invention.
- FIG. 9 is a plan view showing a pressure distribution inside a fan cover used in a refrigerator according to an embodiment of the present invention, wherein (A) shows a pressure distribution of the present embodiment, and (B) shows a pressure distribution of the background art;
- FIG. 10 is a view for explaining a refrigerator according to an embodiment of the present invention, and is a block diagram showing a change amount of a change in air volume with respect to a fan;
- Figure 11 is an enlarged side elevational view showing the refrigerator of the background art
- Fig. 12 is a perspective view showing a fan cover employed in a refrigerator of the background art.
- FIG. 1 is a front external view showing a schematic configuration of a refrigerator 1 according to an embodiment of the present invention.
- the refrigerator 1 of the present embodiment has a heat insulating box 2 as a main body, and a storage chamber for storing foods and the like is formed inside the heat insulating box 2.
- the storage compartment the uppermost section is the refrigerating compartment 3, the left side of the lower section is the ice making compartment 4, the lower section is the upper freezing compartment 5, and the lower section is the lower freezing compartment 6, and the lowermost section is the vegetable compartment 7.
- each of the ice making compartment 4, the upper freezing compartment 5, and the lower freezing compartment 6 is a storage compartment in a freezing temperature range, and in the following description, these are collectively referred to as a freezing compartment 4A as appropriate.
- the front surface of the heat insulating box 2 is opened, and the heat insulating door 8-12 is opened and closed in the opening corresponding to each of the storage chambers.
- the heat insulating doors 8a and 8b respectively block the front surface of the refrigerator 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.
- the heat insulating doors 9-12 are integrally combined with the storage container, and are supported by the heat insulating box 2 so as to be freely pulled out in front of the refrigerator 1.
- FIG. 2 is a side cross-sectional view showing a schematic configuration of the refrigerator 1.
- the main body of the refrigerator that is, the heat insulating box 2
- the heat insulating box 2 is made of an outer box 2a made of a steel plate having an open front, and a synthetic resin having a gap formed in the outer box 2a.
- the box 2b is constructed.
- the gap between the outer casing 2a and the inner casing 2b is foamed and filled with a heat insulating material 2c made of foamed polyurethane.
- each of the heat insulating doors 8-12 also has the same heat insulating structure as the heat insulating box 2.
- the refrigerating compartment 3 and the freezing compartment 4A located in the lower section thereof are partitioned by the heat insulating partition wall 28.
- the space between the ice making chamber 4 and the upper freezing chamber 5 inside the freezing compartment 4A is separated by a dividing wall (not shown). Further, between the ice making compartment 4 and the upper freezing compartment 5 and the lower freezing compartment 6 provided in the lower section, the cold air can be communicated in a fluid-free manner. Further, the freezing compartment 4A and the vegetable compartment 7 are partitioned by the heat insulating partition wall 29.
- a refrigerating compartment supply duct 14 which is partitioned by a separator 45 made of synthetic resin and which serves as a supply duct for supplying cold air to the refrigerating compartment 3 is formed on the back surface of the refrigerating compartment 3.
- An air outlet 17 through which the cold air flows to the refrigerating compartment 3 is formed in the refrigerating compartment air supply duct 14.
- a refrigerating compartment shutter 25 is provided in the refrigerating compartment supply duct 14.
- the refrigerator compartment shutter 25 is a shutter that can be opened and closed by a motor or the like, and controls the flow rate of the cold air supplied to the refrigerator compartment 3, and appropriately maintains the temperature inside the refrigerator compartment 3.
- a freezer compartment supply duct 15 through which cold air cooled by the cooler 32 flows into the freezing compartment 4A is formed.
- a cooling chamber 13 is formed on the further inner side of the freezer compartment supply duct 15, and an evaporator for cooling the air circulating inside the refrigerator, that is, the cooler 32, is disposed inside the cooling chamber 13.
- the cooler 32 is connected to the compressor 31, a heat sink (not shown), and a capillary (not shown), that is, an expansion valve, through a refrigerant pipe to constitute a vapor compression refrigeration cycle.
- the refrigerator 1 has a refrigerating compartment temperature sensor 40 that detects the temperature inside the refrigerating compartment 3, a freezing compartment temperature sensor 41 that detects the temperature inside the freezing compartment 4A, and various other types of sensors (not shown).
- the refrigerator 1 includes a control device (not shown) that performs predetermined arithmetic processing based on input values from the sensors, and controls various structures such as the compressor 31, the blower 35, the shielding device 50, and the refrigerating chamber shutter 25. device.
- FIG. 3 is a front schematic view showing a schematic configuration of a supply duct of the refrigerator 1.
- the refrigerating compartment supply duct 14 which supplies cold air to the refrigerating compartment 3 conveys the cold air to the uppermost part in the center part of the refrigerating chamber 3, and it descends from the both sides. Thereby, cold air can be efficiently supplied to the inside of the refrigerator compartment 3 as a whole.
- the refrigerator 1 has a return air duct 20 through which cold air flows from the refrigerating chamber 3 to the cooling chamber 13 (see Fig. 2).
- An opening connected to the return air duct 20, that is, the return port 22 is formed at a lower portion of the refrigerating compartment 3.
- the air in the refrigerating compartment 3 flows to the return duct 20 via the return port 22, and flows to the lower side of the cooler 32.
- a vegetable compartment supply duct 16 through which the air cooled by the cooler 32 flows to the vegetable compartment 7 is formed in front of the return air duct 20.
- the vegetable compartment supply duct 16 branches upward from the freezer compartment supply duct 15, and changes the direction downward through the inside of the heat insulating partition wall 28 (see FIG. 2) above the freezing compartment 4A, and passes through the inside of the freezing compartment 4A.
- the insulating partition wall 29 (see FIG. 2) is connected to the vegetable compartment 7.
- An opening for blowing cold air from the vegetable compartment air duct 16 that is, the air outlet 19 is formed in the vegetable compartment 7 .
- the vegetable compartment air supply duct 16 is provided with a vegetable compartment shutter 26 that controls the flow of cold air supplied to the vegetable compartment 7.
- the cooling of the vegetable compartment 7 can be performed independently of the cooling of the refrigerator compartment 3, and the temperature of the vegetable compartment 7 can be suitably controlled.
- a return port 24 is formed in the vegetable compartment 7, and air in the vegetable compartment 7 flows from the return port 24 to the lower portion of the cooling chamber 13 through the vegetable compartment return air passage 21 (see Fig. 2) and the return port 13b (see Fig. 2).
- cooling chamber 13 is a side cross-sectional view showing a structure in the vicinity of the cooling chamber 13 of the refrigerator 1.
- the cooling chamber 13 is provided on the back side of the freezer compartment supply duct 15.
- the cooling chamber 13 and the freezing chamber 4A are partitioned by a separator 46 made of synthetic resin. That is, the cooling chamber 13 is a space formed by the inner box 2b and the separator 46.
- the freezer compartment supply duct 15 formed in front of the cooling chamber 13 is a space formed between the partition 46 and the front cover 47 made of synthetic resin assembled in front thereof, and flows as cold air cooled by the cooler 32. Wind tunnel.
- the front cover 47 is formed with an opening for blowing cold air into the freezing compartment 4A, that is, the air outlet 18.
- a return port 23 through which the air returns from the freezing compartment 4A to the cooling chamber 13 is formed on the lower back surface of the lower freezing compartment 6. Further, a return port 13b is formed below the cooling chamber 13, and the return port 13b is connected to the return port 23, and the cold air returned from each storage chamber is taken into the inside of the cooling chamber 13.
- a defrosting device 33 is provided below the cooler 32 as a defrosting unit for melting and removing frost adhering to the cooler 32.
- the defrosting device 33 is a resistance heating type heater.
- a blower port 13a An opening connected to each storage compartment, that is, a blower port 13a is formed in an upper portion of the partition 46. That is, the air blowing port 13a is an opening through which the cool air cooled by the cooler 32 flows, and communicates with the cooling chamber 13, the refrigerating compartment supply duct 14, the freezing compartment supply duct 15, and the vegetable compartment supply duct 16 (see FIG. 3).
- a blower 35 that sends cold air to the freezing compartment 4A or the like is disposed in the air blowing port 13a.
- the blower 35 is an axial flow fan having a rotary fan 37 and a casing 36 in which a substantially cylindrical opening, that is, a wind tunnel 36a is formed.
- the casing 36 is attached to the air supply port 13a of the cooling chamber 13.
- a fan 37 is disposed coaxially with the wind tunnel 36a in the casing 36. Further, the exhaust side end portion of the fan 37 is disposed at a position closer to the outside than the exhaust side end portion of the wind tunnel 36a, that is, the exhaust side end portion of the casing 36.
- a shielding device 50 having a fan cover 51 for blocking the air blowing port 13a is provided outside the air blowing port 13a of the cooling chamber 13.
- the shielding device 50 is mounted such that its supporting base 53 is in close contact with the casing 36 of the blower 35, for example.
- the surface of the fan cover 51 that faces the cooling chamber 13 is formed in a concave shape. Thereby, the fan cover 51 can contact the fan 37 which protrudes toward the exhaust side rather than the case 36, and can contact the support base 53 outside the wind tunnel 36a, and block the ventilation opening 13a. Further, the shielding device 50 is covered by the shielding device cover 49 from the front. A gap allowing the fan cover 51 to move in the front-rear direction is formed between the shielding device 50 and the shielding device cover 49.
- FIG. 5 is a perspective view showing the components constituting the shielding device 50 in a front-rear direction.
- the shielding device 50 has a fan cover 51 that covers the fan 37, a support base 53 that mounts the fan cover 51 to the main body of the refrigerator 1, and an intake pipe 59 that connects the fan cover 51 and the air passage on the refrigerator main body side.
- the main function of the shielding device 50 is to appropriately turn the fan 37 into an open state or a closed state, thereby supplying cold air generated by the rotation of the fan 37 to a desired storage compartment.
- the shielding device 50 is in a closed state, thereby suppressing the flow of the warm air generated during the defrosting process of the cooler 32 into the freezing compartment 4A or the like.
- the fan cover 51 is formed by injection-molding a synthetic resin material into a substantially lid shape, and has a main surface portion 69 having a substantially square shape and a side surface portion 70 extending rearward from a peripheral edge portion of the main surface portion 69. Further, in the vicinity of the center of the main surface portion 69, a screw hole 63 is formed in a circular shape, and the inner side surface of the screw hole 63 is recessed in a spiral shape to form a screw groove. Further, the side surface portion 70 on the upper side of the fan cover 51 is opened to form the opening portion 64. When the fan cover 51 blocks the blower 35, the opening 64 is connected to the opening 65 of the intake pipe 59.
- a support hole 62 through which a guide pin 54 to be described later is inserted is formed in the vicinity of the lower left corner and the upper right corner of the fan cover 51.
- the two support holes 62 are provided at the opposite corners of the fan cover 51.
- the support hole and the second support hole function.
- the fan cover 51 functions to substantially block the fan 37 disposed in the air blowing port 13a of the cooling chamber 13 as described below. Further, since the opening portion 64 is formed in the upper portion of the fan cover 51, even when the fan cover 51 blocks the fan 37, the cold air blown by the fan 37 is supplied to the refrigerating chamber 3 side via the opening portion 64.
- the drive shaft 61 has a substantially cylindrical shape, and a part of its side surface is continuously spiral and provided with a protruding thread.
- the thread formed on the side surface of the drive shaft 61 is screwed with the screw groove formed on the side surface of the screw hole 63 of the fan cover 51.
- a motor (not shown) is built in the drive shaft 61, and the drive shaft 61 is rotated by a predetermined angle by the driving force of the motor.
- the drive shaft 61 rotates clockwise, for example, the fan cover 51 is separated from the support base 53 and a gap is formed between the fan cover 51 and the support base 53 to be in an open state. Therefore, cold air blown by the fan 37 (not shown) is supplied to the freezing compartment 4A via the gap.
- the drive shaft 61 rotates counterclockwise, for example, the side surface portion 70 of the fan cover 51 is in close contact with the support base 53 and the gap is not formed, and the closed state is obtained. Therefore, the cold air blown by the fan 37 (not shown) is not supplied to the freezing compartment 4A, but is supplied to the refrigerating compartment 3 via the opening 64 and the intake duct 59.
- the support base 53 mainly has a frame-shaped frame portion 71 having a rectangular shape in a plan view, a shaft support portion 72 that supports the drive shaft 61 disposed at the center portion, and a support frame 60 that connects the corner portions of the shaft support portion 72 and the frame portion 71, and A guide pin 54 is provided on the lower left corner portion and the upper right corner portion of the frame portion 71.
- the frame portion 71 mechanically supports the entire support base 53 and is provided with a plurality of holes 73 in its four-corner attachment. As shown in FIG. 4, the shielding device 50 including the frame portion 71 is fixed to the separator 46 by a fixing means such as a screw penetrating through the hole portion 73.
- the guide pin 54 is a cylindrical member that is placed at a position corresponding to the support hole 62 of the fan cover 51. Each guide pin 54 is inserted into the support hole 62 and slid to guide the action of the fan cover 51.
- the intake pipe 59 is made of injection-molded synthetic resin, and the opening 65 formed at the lower end thereof is disposed at a position matching the opening 64 of the fan cover 51 in the closed state. Therefore, the opening portion 65 of the intake pipe 59 and the opening portion 64 of the fan cover 51 are formed in substantially the same shape and size. Further, the opening on the rear side of the intake pipe 59 is continuous with the inlet portion 14a shown in Fig. 4 .
- the intake pipe 59 functions as a pipe that communicates the internal space of the fan cover 51 and the air passage connected to the refrigerating compartment 3.
- FIG. Fig. 6(A) is a perspective view showing the shielding device 50 in an open state
- Fig. 6(B) is a perspective view showing the shielding device 50 in a closed state.
- the open state refers to a state in which the shielding device 50 does not block the fan 37
- the closed state refers to a state in which the shielding device 50 blocks the fan 37.
- the fan cover 51 in the above-described open state, the fan cover 51 is moved forward by the driving force of the drive shaft 61. Therefore, the rear end of the side surface portion 70 of the fan cover 51 is separated from the support base 53, and a gap is formed between the fan cover 51 and the support base 53. Further, in this state, the opening portion 64 formed in the upper portion of the fan cover 51 does not communicate with the opening portion 65 formed in the lower portion of the intake pipe 59. In this state, when the fan 37 shown in FIG. 4 is rotated and air is blown, the blown cold air is supplied to the freezing compartment 4A via the gap.
- the drive shaft 61 is rotated counterclockwise, for example. Thereby, the fan cover 51 moves rearward, and the rear end portion of the side surface portion 70 of the fan cover 51 abuts against the front surface of the support base 53.
- the guide pin 54 of the support base 53 is inserted into the support hole 62 of the fan cover 51, and the guide pin 54 slides inside the support hole 62 when the fan cover 51 is opened and closed. Further, the guide pin 54 and the support hole 62 are disposed in the vicinity of the opposite corner portions of the fan cover 51. Therefore, the opening and closing operation of the fan cover 51 is smoothly performed by sliding the guide pin 54 inside the support hole 62.
- the superimposing portion 66 is formed by projecting upward around the opening portion 64 formed at the upper end of the fan cover 51. Further, the periphery of the opening 65 formed at the lower end of the intake pipe 59 is protruded downward to form the superposition portion 67. Therefore, when the fan cover 51 is in the closed state, the superimposing portion 66 of the fan cover 51 and the superimposing portion 67 of the intake pipe 59 overlap. Here, the superimposing portion 66 of the fan cover 51 is superposed on the outer side with respect to the superimposing portion 67 of the intake pipe 59. According to the related configuration, when the fan cover 51 is in the closed state, since the airtightness of the joint portion between the fan cover 51 and the intake pipe 59 is relatively high, leakage of cold air from the joint portion is suppressed.
- a circular screw hole 63 is formed in a central portion of the fan cover 51, and a drive shaft 61 is disposed inside the screw hole 63.
- the fan 37 (not shown) rotates clockwise to blow the cooled cold air to the respective storage compartments.
- the direction of rotation of the fan 37 is indicated by an arrow.
- the opening portion 64 formed at the upper end of the fan cover 51 is formed to be biased to the left. Specifically, the opening portion 64 is formed at the upper end of the fan cover 51 from the left end portion to the right side of the center portion 68. That is, since the rotation direction of the fan 37 is clockwise, the upper half of the fan 37 moves to the right when rotating, and the opening 64 is disposed in the opposite direction, that is, to the left. Further, the opening 65 formed at the lower end of the intake pipe 59 is also formed at a position offset to the left from the center 68 of the fan cover 51.
- the opening portion 64 is formed at a position offset to the left, so that the space 74 on the left side can be greatly secured inside the fan cover 51, the pressure loss inside the fan cover 51 is reduced, and the air blown by the fan 37 is blown.
- the amount of wind is relatively large.
- the number of rotations of the fan 37 is 1750 rpm, and the air blowing amount when the opening portion 64 is disposed at the center portion in the left-right direction is 323.3 L/min, whereas the opening portion 64 is disposed on the left side as described above.
- the amount of air supplied under is 489.5 L/min. Therefore, in the present embodiment, by arranging the opening portion 64 to the left, it is possible to efficiently blow cold air.
- the support portion 62 through which the guide pin 54 is inserted is formed in the fan cover 51, but the support hole 62 is disposed closer to the outer side than the side surface portion 70. That is, the support hole 62 is disposed at a position outside the inner space of the fan cover 51. As a result, compared with the case where the support hole 62 is disposed inside the side surface portion 70, the portion of the fan cover 51 is reduced in the internal space of the fan cover 51, so that the resistance during air blowing can be reduced.
- the support hole 62 is disposed in the vicinity of the opposite corner portion of the fan cover 51, but is also disposed in a portion other than the left upper portion in which the opening 64 is disposed.
- the support holes 62 are formed in the lower left portion and the upper right portion of the fan cover 51. Thereby, the support hole 62 does not interfere with the opening portion 64 disposed at the upper left portion, and the shape of the space 74 of the fan cover 51 is not disturbed by the support hole 62. Therefore, the flow of cold air from the fan cover 51 to the intake pipe 59 is good.
- the shielding device 50 of the refrigerator 1 described above will be described in further detail with reference to the perspective view of Fig. 8 .
- the shielding device 50 is disposed in an inclined state. That is, the shielding device 50 is disposed such that the upper portion thereof is inclined rearward than the lower portion thereof.
- the shielding device 50 is disposed at an upper portion of the partition 46, and the partition 46 is formed vertically, whereas the shielding device 50 is inclined upward and rearward.
- the shielding device 50 is disposed obliquely, and the cold air can be favorably blown to the refrigerating compartment supply duct 14 via the fan cover 51 and the intake pipe 59 constituting the shielding device 50.
- the lower end portion of the fan cover 51 constituting the shielding device 50 protrudes forward.
- the lower end portion of the shielding device 50 protrudes toward the freezing compartment 4A side, thereby pressing the volume of the freezing compartment 4A.
- the lower end portion of the main surface portion 69 of the fan cover 51 is an inclined surface 42 that is inclined downward and rearward. Therefore, the amount of protrusion of the lower end portion of the fan cover 51 toward the front is suppressed. Therefore, with reference to Fig. 4, the amount of projection of the entire shielding device 50 including the fan cover 51 toward the freezing compartment 4A side is suppressed, so that the volume of the freezing compartment 4A can be greatly ensured.
- Fig. 9(A) shows the pressure distribution in the fan cover 51 of the present embodiment
- Fig. 9(B) shows the pressure distribution in the fan cover 110 of the background art.
- a color similar to black indicates a region where the pressure at the time of blowing is relatively high
- a color similar to white indicates a region where the pressure is relatively low.
- the pressure inside is lowered.
- the force at the right end portion of the fan cover 51 is slightly higher, the overall pressure is lower, especially the pressure in the left portion becomes lower.
- the reason why the force of the left portion of the fan cover 51 is relatively low is that, as described above, since the opening portion 64 is disposed closer to the left, the rectified cold air can be favorably released to the outside from the opening portion 64.
- the pressure loss is relatively small, and the cold air can be efficiently blown.
- the internal pressure becomes large as a whole, and especially the pressure in the right part becomes high.
- the reason for this is that in the fan cover 110, since the opening portion 113 is formed in the vicinity of the center, the cold air blown by the fan 37 that rotates clockwise cannot be satisfactorily supplied to the outside.
- the pressure loss is relatively small as compared with the case of using the fan cover 110 of the background art, and the cold air can be efficiently blown to the storage compartment.
- the horizontal axis of the block diagram indicates the amount of cold air blown by the fan 37, and the vertical axis indicates static pressure.
- the static pressure refers to a force that blows the wind against the pressure fan 37 of the air blowing device.
- the change in the air volume in the centrifugal fan such as the vane fan and the turbine fan is indicated by a one-dot chain line, and the change in the air volume of the axial fan used in the present embodiment is indicated by a solid line.
- the change in the air volume in the case where the static pressure is increased from P2 to P1 is shown.
- the static pressures P1 and P2 are indicated by broken lines.
- the change in the air volume is relatively large with respect to the static pressure change. That is, when the static pressure is increased from P2 to P1, the amount of change ⁇ 1 in the amount of blown air of the fan is larger than the above ⁇ 2. This is because, for the axial fan, the air volume is larger than that of the centrifugal fan, and the air is exhausted by intercepting the air.
- the arrangement of the opening portion 64 and the support hole 62 is optimized, thereby reducing the fan cover.
- the internal pressure of 51 is very useful.
- the compressor 31 is operated in accordance with an instruction from the control unit, and the refrigerator compartment shutter 25 is opened to operate the blower 35.
- the fan cover 51 is in a closed state.
- the air cooled by the cooler 32 sequentially passes through the air supply port 13a of the cooling chamber 13, the blower 35, the internal space of the fan cover 51, the intake pipe 59, the refrigerating compartment shutter 25, the refrigerating compartment supply duct 14, and the air outlet 17, It is supplied to the refrigerating compartment 3. Thereby, it is possible to cool and store the food or the like stored in the inside of the refrigerator compartment 3 at an appropriate temperature.
- the circulating cold air supplied to the inside of the refrigerating compartment 3 is returned from the return port 22 to the inside of the cooling chamber 13 via the return duct 20. Here, it is cooled again by the cooler 32.
- the compressor 31 is operated in accordance with an instruction from the control unit, the refrigerator compartment shutter 25 is closed, the blower 35 is operated, and the fan compartment 51 is opened to cool the freezer compartment 4A.
- the fan cover 51 is in a state of being separated from the support base 53 as shown in FIG. 6(A).
- the air cooled by the cooler 32 is sent to the blower 35 of the air supply port 13a of the cooling chamber 13, and is sequentially supplied to the freezer compartment 4A through the freezer compartment supply duct 15 and the air outlet 18.
- the food or the like stored in the inside of the freezing compartment 4A can be cooled and stored at an appropriate temperature. Further, the air inside the freezing compartment 4A passes through the return port 23 formed in the lower freezing compartment 6, and flows into the inside of the cooling compartment 13 via the return port 13b of the cooling chamber 13.
- a part of the air sent to the freezer compartment air supply passage 15 by the blower 35 is opened to the vegetable compartment air supply duct 16 shown in Fig. 3 by opening the vegetable compartment shutter 26 shown in Fig. 2, and the air outlet port 19 is directed to the vegetable compartment 7 discharge. Thereby, the inside of the vegetable compartment 7 can be cooled. Then, the cold air circulating in the vegetable compartment 7 is returned to the air passage 21 and the return port 13b through the vegetable compartment in order from the return port 24 shown in FIG. 2, and returns to the cooling chamber 13.
- the separation length of the fan cover 51 and the support base 53 is made shorter than the length when only the freezing compartment 4A is cooled.
- the separation length of the fan cover 51 and the support base 53 is approximately half as long as the length when only the freezing compartment 4A is cooled.
- the refrigerating compartment shutter 25 is in an open state. In this state, when the cold air cooled by the cooler 32 is blown by the fan, a part of the blown cold air is supplied from the gap between the fan cover 51 and the support base 53 to the freezing compartment 4A, and the other part of the cold air is supplied via the intake pipe 59.
- the refrigerating compartment shutter 25 and the refrigerating compartment supply duct 14 are supplied to the refrigerating compartment 3.
- the defrosting cooling operation for cooling the refrigerator compartment 3 by the latent heat of the frost attached to the cooler 32 will be described.
- the operation of the compressor 31 is stopped in accordance with an instruction from the control unit, and the fan cover 51 is closed as shown in Fig. 6(B).
- the refrigerating compartment shutter 25 is opened to operate the blower 35.
- air is circulated between the refrigerating compartment 3 and the cooling compartment 13, and the frost adhering to the cooler 32 can be melted by this circulating air. That is, defrosting can be performed without performing heating of the defrosting device 33.
- the cooling of the refrigerating compartment 3 can be performed by the heat of dissolution of the frost without operating the compressor 31.
- the compressor 31 is stopped according to an instruction from the control unit, and the defrosting device 33 is energized to melt the frost adhering to the cooler 32.
- the fan cover 51 is in a closed state, blocking the air supply port 13a, and closing the refrigerator compartment shutter 25.
- the air in the cooling chamber 13 in which the defrosting device 33 is warm can be prevented from flowing out to the refrigerating compartment supply duct 14 and the freezing compartment supply duct 15.
- the cooling efficiency of the refrigerator 1 can be improved.
- the energization of the defrosting device 33 is stopped according to an instruction from the control unit, the compressor 31 is started, and the cooling of the refrigeration circuit is started.
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Abstract
一种降低吹送冷气时的压力损失的冰箱,堵住送风机的遮蔽装置(50)具有堵住风扇(37)且在上端具有开口部(64)的风机罩(51)、支承风机罩(51)的支承基体(53)以及与风机罩(51)的开口部(64)连接的吸气管(59),在风机罩(51)为关闭状态时,风扇(37)吹送的冷气经由吸气管(59)和供风道(14)供给到储藏室(3)。
Description
本申请要求了申请日为2016年07月12日,申请号为201610548156.2,发明名称为“一种冰箱”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本发明涉及一种在储藏室内对食品等进行冷却保存的冰箱,尤其是,涉及一种能够通过冷却器高效地冷却多个储藏室的冰箱。
在现有技术中,已知如下冰箱:例如,对分割成冷藏室和冷冻室等冷温不同的多个收纳室的储藏室供给一个冷却器所冷却的冷气。在该种类的冰箱中,在收纳冷却器的冷却室的送风口设置送风机,将该送风机所送出的冷气分流,分别供给到冷藏室和冷冻室。
然而,在现有技术的冰箱中,具有如下问题:难以对冷藏室和冷冻室独立地进行适当地冷却。
为了解决相关问题,开发了日本专利文件特开2015-55377号公报中所记载的冰箱。图11和图12概略地示出了该文献中记载的冰箱100。在图11所示的冰箱100中,从上方形成有冷藏室101、冷冻室102以及蔬菜室103。在冷冻室102的里侧形成有收纳有冷却器108的冷却室104,在分割冷却室104和冷冻室102的分割壁105上形成有用于向各储藏室供给冷气的开口部106。此外,在该开口部106配置有吹送冷气的送风风扇107,在冷冻室102侧配置有覆盖该送风风扇107的风机罩110。在供给到冷藏室101的冷气流通的空气通路109的中途配置有挡板114。
参照图12,详细叙述上述风机罩110。对于风机罩110,形成有呈大致四角形形状的凹部111,将凹部111的上部部分地切除而形成开口部113。由此,在风机罩110覆盖上述送风风扇107的情况下,风机罩110的开口部113与冰箱主体侧的空气通路109连通。
上述结构的冰箱100如下进行动作。参照图11,首先,在对冷藏室101和冷冻室102双方进行冷却的情况下,风机罩110从送风风扇107分离,打开挡板114,在该状态下使送风风扇107旋转。然后,在冷却室104的内部冷却器108所冷却的冷气的一部分通过送风风扇104的送风力被吹送到冷冻室102。此外,该冷气的其他的部分经由空气通路109、挡板114以及空气通路109被吹送到冷藏室101。由此,冷却冷冻室102和冷藏室101双方。
与此相对,在仅冷却冷藏室101时,通过风机罩110覆盖送风风扇107,打开挡板114,在该状态下通过送风风扇107吹送冷却器108所冷却的冷气。参照图12,如果将风机罩110设为关闭状态,形成在风机罩110的上部的开口部113形成为与空气通路109连通。因此,图11所示,送风风扇107所吹送的冷气经由上述开口部113(见图12)、挡板114以及空气通路109被供给到冷藏室101。
综上所述,使用形成有开口部113的风机罩113,从而能够通过一个冷却器108适当地冷却多个储藏室。
然而,在所述冰箱中,从将冷气高效地吹送到各储藏室的效率性的观点来考虑,还有改良的余地。具体来说,如参照图11所说明的那样,在风机罩110覆盖送风风扇107的状态下,在向冷藏室101吹送冷气时,风机罩110的内部的压力损失变大。由此,具有如下问题:供给到冷藏室101的冷气的风量不足,为了将冷藏室101冷却到预定温度,送风风扇107需长时间旋转,有悖于节能。
发明内容
为至少解决上述技术问题之一,本发明的目的在于提供一种冰箱,降低吹送冷气时的压力损失,从而使向储藏室吹送的冷气的风量变大。
为实现上述发明目的之一,本发明一实施方式提供了一种冰箱,具有:多个储藏室;冷却器,
其冷却经由供风道供给到所述储藏室的空气;冷却室,其配置有所述冷却器,形成有与所述储藏室连接的送风口;送风机,其设置在所述送风口;以及,风机罩,其从所述冷却室的外侧覆盖所述送风机,确保供冷却的所述空气流动的开口部并堵住所述送风口,其中,在所述风机罩堵住所述送风口的状态下,经由吸气管连接所述风机罩的所述开口部和所述供风道。
作为本发明一实施方式的进一步改进,所述送风机具有通过马达在预定方向上旋转的风扇,所述吸气管在偏向与所述风扇的旋转方向的相反方向的位置与所述风机罩的所述开口部连接。
作为本发明一实施方式的进一步改进,在所述风机罩堵住所述送风口的状态下,所述吸气管的端部和所述风机罩的端部交叠。
作为本发明一实施方式的进一步改进,所述冰箱还具有导向销,该导向销可滑动地贯通所述风机罩,所述风机罩具有呈大致四角形形状的主面部、从所述主面部向所述送风机侧延伸的侧面部以及供所述导向销贯通的支承孔,所述风机罩的所述支承孔配置在比所述侧面部更靠近外侧的位置。
作为本发明一实施方式的进一步改进,所述支承孔具有第1支承孔和第2支承孔,其中,所述第1支承孔形成在与偏置配置所述开口部的角部相邻的角部,所述第2支承孔形成在与所述第1支承孔对置的角部。
作为本发明一实施方式的进一步改进,所述风机罩以朝向上方且向后方倾斜的方式配置,在所述风机罩的内侧下端部形成倾斜面。
作为本发明一实施方式的进一步改进,所述送风机是轴流风机。
与现有技术相比,本发明具有以下有益技术效果:
(1)在冷却器冷却的空气经由风机罩的开口部以及吸气管导入到冰箱主体侧的供风道。因此,能够抑制冷却的空气泄漏,提高储藏室的冷却效率。例如,因为抑制了应该供给到冷藏室的空气从冷冻室侧泄漏,所以能够提高节能性。
(2)由于减小了风机罩堵住风扇状态下的压力损失,所以能够充分确保从风机罩的开口部供给到供风道的风量。
(3)使吸气管和风机罩的一部分交叠,从而提高双方连接部分的气密性,在风机罩堵住风扇的状态下,在向供风道供给冷气时,抑制冷气从吸气管和风机罩的连接部分的泄漏,提高冷却效率。
(4)供导向销插入的支承孔与形成风机罩的内部空间的侧面部相比配置在靠近外侧的位置,所以在内部空间流通的冷气的气流不会被支承孔以及导向销扰乱。因此能够充分确保供给到供风道的风量。
(5)将偏置设置所述开口部的角部和形成有支承孔的角部设计为不同的角部,从而减少支承孔阻碍风机罩内部的空气流通的情况。
(6)虽然为了增大风量而倾斜配置的风机罩的下端部分向内侧突出,但是在其突出的下端部分设置倾斜面,从而使风机罩的突出量减小,能够较大地确保储藏室的容积。
(7)一般情况下,对于轴流风机,具有如下倾向:由于送出空气的力,即,静压比较小,如果损失变大,则风量变小,但是经由吸气管向供风道导入空气,从而能够向储藏室供给足够的风量的空气。
图1是本发明的实施方式的冰箱的正面外观图;
图2是示出本发明的实施方式的冰箱的概略结构的侧面截面图;
图3是用于说明本发明的实施方式的冰箱的供风道的正面概略图;
图4是示出本发明的实施方式的冰箱的冷却室附近的结构的侧面截面图;
图5是本发明的实施方式的冰箱中所采用的遮蔽装置的分解立体图;
图6是本发明的实施方式的冰箱中所采用的遮蔽装置的立体图,(A)是打开状态的遮蔽装置的立体图,(B)是关闭状态的遮蔽装置的立体图;
图7是本发明的实施方式的冰箱中所采用的遮蔽装置的前视图;
图8是本发明的实施方式的冰箱中所采用的遮蔽装置的立体图;
图9是示出本发明的实施方式的冰箱中所采用风机罩的内部的压力分布的俯视图,(A)示出本实施方式的压力分布,(B)示出背景技术的压力分布;
图10是用于说明本发明的实施方式的冰箱的图,是示出相对于风扇的变化的风量的变化量的框图;
图11是示出背景技术的冰箱的放大侧面图;
图12是示出背景技术的冰箱中所采用的风机罩的立体图。
以下,根据附图对本发明的实施方式的冰箱进行详细说明。
图1是示出本发明的实施方式的冰箱1的概略结构的正面外观图。如图1所示,本实施方式的冰箱1具有隔热箱体2作为主体,该隔热箱体2的内部形成有用于储藏食品等的储藏室。作为该储藏室,最上段为冷藏室3,其下段左侧为制冰室4,下段右侧为上端冷冻室5,进而,其下段为下段冷冻室6,并且,最下段为蔬菜室7。此外,制冰室4、上段冷冻室5以及下段冷冻室6均是冷冻温度范围的储藏室,在以下的说明中,适当地将这些统称为冷冻室4A。
隔热箱体2的前面开口,在与所述各储藏室对应的所述开口分别开闭自如地设置有隔热门8-12。隔热门8a、8b分开堵住冷藏室3的前面,隔热门8a的左上下部以及隔热门8b的右上下部旋转自如地支承于隔热箱体2。此外,隔热门9-12分别与收纳容器一体地组合,在冰箱1的前方以自由拉出的方式支承于隔热箱体2。
图2是示出冰箱1的概略结构的侧面截面图。如图2所示,冰箱1的主体,即隔热箱体2由前面开口的钢板制成的外箱2a以及在该外箱2a内具有间隙地设置,且前面开口的合成树脂制成的内箱2b构成。在外箱2a和内箱2b之间的间隙发泡充填有由发泡聚氨酯制成的绝热材料2c。此外,各隔热门8-12也采用与隔热箱体2相同的隔热结构。
冷藏室3和位于其下段的冷冻室4A之间,通过隔热分隔壁28被分隔。冷冻室4A的内部的制冰室4和上段冷冻室5之间,在此通过未图示的分割壁分隔。此外,制冰室4以及上段冷冻室5和设置在其下段的下段冷冻室6之间,以冷气能够流通自如的方式连通。并且,冷冻室4A和蔬菜室7之间,通过隔热分隔壁29被分隔。
在冷藏室3的背面形成有被合成树脂制成的分隔体45分隔的且作为向冷藏室3供给冷气的供风道的冷藏室供风道14。在冷藏室供风道14形成有供冷气向冷藏室3流动的出风口17。此外,在冷藏室供风道14设置有冷藏室挡板25。冷藏室挡板25是通过马达等驱动的能够开闭自如的挡板,用于控制供给到冷藏室3的冷气的流量,适当地维持冷藏室3的内部的温度。
在冷冻室4A的里侧形成有供冷却器32所冷却的冷气向冷冻室4A流动的冷冻室供风道15。冷冻室供风道15的更里侧形成有冷却室13,在其内部配置有用于冷却在冰箱内部循环的空气的蒸发器,即,冷却器32。
冷却器32通过制冷剂管道与压缩机31、未图示的散热器、未图示的毛细管,即,膨胀阀连结,构成蒸汽压缩式制冷循环回路。
此外,冰箱1具有检测冷藏室3的内部的温度的冷藏室温度传感器40、检测冷冻室4A的内部的温度的冷冻室温度传感器41、以及其他未图示的各种传感器类。
进而,冰箱1具有未图示的控制装置,该控制装置根据来自所述传感器类的输入值执行预定的运算处理,控制压缩机31、送风机35、遮蔽装置50以及冷藏室挡板25等各结构设备。
图3是示出冰箱1的供风道的概略结构的正面概略图。如图3所示,构成为向冷藏室3供给冷气的冷藏室供风道14在冷藏室3的中央部向最上部输送冷气,之后使其从两侧下降。由此,能够向冷藏室3的内部整体高效地供给冷气。
冰箱1具有供冷气从冷藏室3流向冷却室13(见图2)的返回风道20。在冷藏室3的下部形成有与返回风道20连接的开口,即,返回口22。冷藏室3内的空气经由返回口22流向返回风道20,流向冷却器32的下方。
此外,在返回风道20的前方形成有供冷却器32所冷却的空气流向蔬菜室7的蔬菜室供风道16。蔬菜室供风道16从冷冻室供风道15向上方分支,经由冷冻室4A的上方的隔热分隔壁28(见图2)的内部向下方改变方向,通过冷冻室4A的里面。并且,贯通隔热分隔壁29(见图2)与蔬菜室7连接。在蔬菜室7形成有从蔬菜室供风道16吹出冷气的开口,即,出风口19。
在蔬菜室供风道16设置有控制向蔬菜室7供给的冷气的流向的蔬菜室挡板26。由此,能够与冷藏室3的冷却独立地进行蔬菜室7的冷却,能够适当地控制蔬菜室7的温度。
在蔬菜室7形成有返回口24,蔬菜室7内的空气从返回口24经由蔬菜室返回风道21(见图2)以及返回口13b(见图2)向冷却室13的下部流动。
图4是示出冰箱1的冷却室13附近的结构的侧面截面图。在隔热箱体2的内部,冷却室13设置在冷冻室供风道15的里侧。冷却室13和冷冻室4A之间被合成树脂制成的分隔体46分隔。即,冷却室13是被内箱2b和分隔体46夹持而形成的空间。
形成在冷却室13的前方的冷冻室供风道15是形成在分隔体46和组装在其前方的合成树脂制成的前面罩47之间的空间,成为供冷却器32所冷却的冷气流动的风道。在前面罩47形成有向冷冻室4A吹出冷气的开口,即,出风口18。
在下段冷冻室6的下部背面形成有供空气从冷冻室4A向冷却室13返回的返回口23。并且,在冷却室13的下方形成有返回口13b,该返回口13b与该返回口23连接,向冷却室13的内部吸入从各储藏室返回的冷气。
此外,在冷却器32的下方设置有除霜装置33作为除霜单元,该除霜装置用于融化并去除附着在冷却器32的霜。除霜装置33是电阻加热型的加热器。
在分隔体46的上部形成有与各储藏室连接的开口,即,送风口13a。即,送风口13a是供冷却器32所冷却的冷气流动的开口,与冷却室13、冷藏室供风道14、冷冻室供风道15以及蔬菜室供风道16(见图3)连通。在送风口13a配置有向冷冻室4A等送出冷气的送风机35。
送风机35是具有旋转式的风扇37、形成有大致圆筒状的开口,即,风洞36a的壳体36的軸流送风机。壳体36安装在冷却室13的送风口13a。
在壳体36与风洞36a同轴地设置有风扇37。此外,风扇37的排气侧端部配置在比风洞36a的排气侧端部,即,壳体36的排气侧端部更靠近外侧的位置。
此外,在冷却室13的送风口13a的外侧设置有具有用于堵住送风口13a的风机罩51的遮蔽装置50。遮蔽装置50以其支承基体53例如与送风机35的壳体36密接的方式被安装。
风机罩51的与冷却室13对置的面成形为凹状。由此,风机罩51能够不与比壳体36更向排气侧突出的风扇37接触,而在风洞36a的外侧与支承基体53抵接从而堵住送风口13a。此外,遮蔽装置50从前方被遮蔽装置罩49覆盖。在遮蔽装置50与遮蔽装置罩49之间形成有允许风机罩51向前后方向移动的间隙。
参照图5,说明上述冰箱1中所采用的遮蔽装置50的结构。图5是对构成遮蔽装置50的各部件在前后方向进行分解显示的立体图。
遮蔽装置50具有覆盖上述风扇37的风机罩51、将风机罩51安装于冰箱1主体的支承基体53以及连接风机罩51和冰箱主体侧的风道的吸气管59。遮蔽装置50的主要机能在于:适当地使上述风扇37为打开状态或者关闭状态,从而将风扇37旋转而产生的冷风供给到所希望的储藏室。此外,
使遮蔽装置50为关闭状态,从而抑制在冷却器32的除霜过程中产生的暖气流入冷冻室4A等。
风机罩51是通过将合成树脂材料注射成型为大致盖形状而形成的,具有呈大致四角形形状的主面部69以及从主面部69的周边缘部向后方延伸的侧面部70。此外,在主面部69的中心附近,贯通为圆形形成有螺丝孔63,使螺丝孔63的内侧侧面凹陷为螺旋状从而形成螺纹槽。此外,使风机罩51上侧的侧面部70开口形成开口部64。在风机罩51堵住送风机35的情况下,开口部64与上述吸气管59的开口部65连接。
进而,在风机罩51的左下角附近以及右上角附近,形成有用于贯穿插入后述的导向销54的支承孔62。2个支承孔62作为设置在风机罩51的对置的角部的第1支承孔和第2支承孔发挥功能。
风机罩51的作用在于:如下所述,实质地堵住配置在冷却室13的送风口13a的风扇37。此外,由于在风机罩51的上部形成有开口部64,所以即使在风机罩51堵住风扇37的情况下,风扇37所吹送的冷气经由开口部64被供给到冷藏室3侧。
驱动轴61呈大致圆筒状,其侧面的一部分连续为螺旋状且设置有突起的螺纹。在此,在使用情况下,形成在驱动轴61的侧面的螺纹与形成在风机罩51的螺丝孔63的侧面的螺纹槽拧合。此外,在驱动轴61的内部内置有未图示的马达,通过其马达的驱动力,驱动轴61旋转预定角度。在驱动轴61例如顺时针旋转时,风机罩51从支承基体53分离,在风机罩51和支承基体53之间形成间隙,成为打开状态。因此,未图示的风扇37吹送的冷气经由该间隙供给到冷冻室4A。与此相对,在驱动轴61例如逆时针旋转时,风机罩51的侧面部70与支承基体53密接,没有形成上述间隙,成为关闭状态。因此,未图示的风扇37所吹送的冷气没有供给到冷冻室4A,而是介由上述开口部64以及吸气管59供给到冷藏室3。
支承基体53主要具有在俯视时呈四角形的框状的框架部71、支承配置在中心部分的驱动轴61的轴支承部72、连接轴支承部72和框架部71的角部的支承框60以及架设在框架部71的左下角部和右上角部的导向销54。框架部71机械地支承支承基体53整体,在其四角附件设置有多个孔部73。如图4所示,通过贯通孔部73的螺钉等固定单元,包含框架部71的遮蔽装置50被固定在分隔体46。
导向销54是架设在与风机罩51的支承孔62对应的位置的圆柱状的部件。各导向销54插入支承孔62并且进行滑动,从而引导风机罩51的动作。
吸气管59由注塑成型的合成树脂构成,在其下端形成的开口部65配置在与关闭状态的风机罩51的开口部64匹配的位置。因此,吸气管59的开口部65和风机罩51的开口部64形成为大致相同的形状以及大小。此外,吸气管59的后方侧的开口与图4所示的入口部14a连续。吸气管59作为连通风机罩51的内部空间和与冷藏室3连接的风道的管道发挥功能。
参照图6,进一步详细说明遮蔽装置50的结构。图6(A)是示出打开状态的遮蔽装置50的立体图,图6(B)是示出关闭状态的遮蔽装置50的立体图。在此,打开状态是指遮蔽装置50没有堵住风扇37的状态,关闭状态是指遮蔽装置50堵住风扇37的状态。
参照图6(A),在上述打开状态下,风机罩51通过驱动轴61的驱动力向前方移动。因此,风机罩51的侧面部70的后端从支承基体53分离,在风机罩51和支承基体53之间形成间隙。此外,在该状态下,形成在风机罩51的上部的开口部64与形成在吸气管59的下部的开口部65没有连通。在该状态下,如果使图4所示的风扇37旋转进行送风,则吹送的冷气经由上述间隙供给到冷冻室4A。
在使风机罩51从打开状态变更到关闭状态时,使驱动轴61例如逆时针旋转。由此,风机罩51向后方移动,风机罩51的侧面部70的后方端部与支承基体53的前面抵接。支承基体53的导向销54贯穿插入风机罩51的支承孔62,在风机罩51进行打开关闭时,导向销54在支承孔62的内部滑动。此外,导向销54和支承孔62配置在风机罩51的对置的角部附近。因此,风机罩51的打开关闭动作通过导向销54在支承孔62的内部滑动从而稳定的进行。
在此,使形成在风机罩51的上端的开口部64的周围向上方突出从而形成叠加部66。此外,使形成在吸气管59的下端的开口部65的周围向下方突出从而形成叠加部67。因此,在风机罩51为关闭状态时,风机罩51的叠加部66和吸气管59的叠加部67交叠。在此,风机罩51的叠加部66相对于吸气管59的叠加部67从外侧重叠。通过相关结构,在风机罩51为关闭状态的情况下,由于风机罩51与吸气管59的接合部分的气密性比较高,所以抑制了冷气从该接合部分泄漏。
参照图6(B),通过使驱动轴61旋转,在使风机罩51向支承基体53侧移动时,风机罩51的侧面部70的后端与支承基体53的表面抵接。因此,风机罩51和支承基体53之间没有间隙,冷气不会从两者间泄漏。此外,如上所述,因为风机罩51的上端部分和吸气管59的下端部分交叠,所以抑制了冷气从风机罩51和吸气管59之间向外部泄漏。因此,参照图4,因为送风口13a被风机罩51堵住,风扇37吹送的冷气不会供给到冷冻室4A。风扇37吹送的冷气经由风机罩51以及吸气管59供给到冷藏室3。
参照图7的前视图,详细叙述风机罩51的结构。参照该图,在风机罩51的中心部分形成有圆形的螺丝孔63,在其螺丝孔63的内部配置有驱动轴61。此外,未图示的风扇37顺时针旋转,从而将所冷却的冷气吹送到各储藏室。在此,风扇37的旋转方向通过箭头表示。
另外,形成在风机罩51的上端的开口部64形成为向左方偏置设置。具体来说,对于开口部64,在风机罩51的上端形成为从左方端部到比中心68更靠右方为止。即,因为风扇37的旋转方向为顺时针方向,风扇37的上半部分在旋转时向右方移动,而开口部64配置在其相反方向,即偏向左方侧设置。并且,形成在吸气管59的下端的开口部65也同样形成在从风机罩51的中心68向左方偏置的位置。
由此,开口部64形成在向左方偏置的位置,从而在风机罩51的内部,能够大大地确保了左侧的空间74,减小风机罩51内部的压力损失,风扇37吹送的冷气的风量比较多。
在实验中,风扇37的旋转数为1750rmp,开口部64配置在左右方向的中心部分的情况下的送风量为323.3L/min,与此相对,如上将开口部64配置在左方的情况下的送风量为489.5L/min。因此,在本实施方式中,通过将开口部64靠左方配置,能够高效地吹送冷气。
此外,在本实施方式中,虽然在风机罩51形成有两个供导向销54贯通插入的支承孔62,但是支承孔62配置在比侧面部70更靠近外侧的位置。即,支承孔62配置在比风机罩51的内部空间更靠近外侧的位置。由此,与将支承孔62配置在侧面部70的内侧的情况相比,在风机罩51的内部空间,因为突起的部分变少,所以能够使送风时的阻力变小。
此外,为了稳定地支撑风机罩51的开闭动作,支承孔62配置在风机罩51的对置的角部附近,但是也配置在除了配置有开口部64的左方上部以外的部分。在此,支承孔62形成在风机罩51的左方下部和右方上部。由此,支承孔62不会干扰配置在左方上部的开口部64,进而,风机罩51的空间74的形状也不会被支承孔62干扰。因此,从风机罩51到吸气管59的冷气的流向较好。
参照图8的立体图,进一步详细叙述上述冰箱1所具有的遮蔽装置50。参照该图,遮蔽装置50在倾斜的状态被配置。即,遮蔽装置50以其上方部分比其下方部分更向后方倾斜的方式被配置。参照图4,遮蔽装置50配置在分隔体46的上方部分,分隔体46垂直形成,与此相对,遮蔽装置50在朝向上方且向后方倾斜。由此,遮蔽装置50倾斜配置,从而能够经由构成遮蔽装置50的风机罩51以及吸气管59向冷藏室供风道14良好地吹送冷气。
如上所述,如果将遮蔽装置50倾斜配置,则构成遮蔽装置50的风机罩51的下端部分向前方突出。即,参照图4,可能会有下述情况:遮蔽装置50的下端部分成为向冷冻室4A侧突出,从而压迫冷冻室4A的容积。由此,在本实施方式中,如图8所示,使风机罩51的主面部69的下端部分作为朝向下方且向后方倾斜的倾斜面42。由此,抑制风机罩51的下端部分向前方的突出量。因此,参照图4,因为包含风机罩51的遮蔽装置50的整体的向冷冻室4A侧的突出量被抑制,所以能够大大地确保冷冻室4A的容积。
参照图9,说明呈上述形状的风机罩51的效果。图9(A)示出本实施方式的风机罩51内的压力分布,图9(B)示出背景技术的风机罩110内的压力分布。在这些图中,以与黑色相近的颜色表示送风时的压力比较高的区域,以与白色相近的颜色表示该压力比较低的区域。
参照图9(A),在本实施方式的风机罩51中,其内部的压力变低。虽然风机罩51的右端部分的圧力稍高,但是整体的压力比较低,尤其是左方部分的压力变低。风机罩51的左方部分的圧力比较低的原因在于:如上所述,由于开口部64靠近左方配置,所以所整流的冷气从开口部64能够良好地向外部释放。在本实施方式的风机罩51中,由于送风时的内部压力比较低,所以压力损失比较小,能够高效地吹送冷气。
与此相对,在图9所示的背景技术的风机罩110中,其内部压力整体变大,尤其是在右方部分压力变高。其原因由在于:在风机罩110中,由于开口部113形成在中心附近,所以顺时针旋转的风扇37所吹送的冷气不能良好地供给到外部。
根据上述内容,在通过本实施方式的风机罩51吹送冷气时,与使用背景技术的风机罩110的情况相比,压力损失比较小,能够高效地向储藏室吹送冷气。
参照图10,本实施方式的遮蔽装置50在适用于作为流送风机的风扇37的情况下,效果较大。该框图的横轴表示风扇37吹送的冷气的风量,纵轴表示静压。在此,静压是指抵抗送风装置的压力风扇37吹送风的力。此外,在该框图中,以单点划线表示叶片式风扇以及涡轮式风扇等离心风机中的风量变化,以实线表示本实施方式中所采用的軸流风扇的风量变化。在该试验中,表示使静压从P2增加到P1的情况下的风量变化。在框图中,以虚线表示静压P1和P2。
在以单点划线表示的离心风机的情况下,相对于静压变化,风量变化较小。因此,即使在静压从P2增加到P1的情况下,风扇的送风量的变化量Δ2也比较小。这是由于在离心风机中,通过勺形的翼以及宽度比较宽的翼排出空气。
与此相对,对于以实线表示的軸流风扇,相对于静压变化,风量的变化比较大。即,静压从P2增加到P1时,风扇的送风量的变化量Δ1比上述Δ2大。这是由于对于軸流风扇来说,与离心风机相比风量较多,且以截断空气的方式排出空气。
根据上述内容,使用作为軸流送风机的风扇37将冷气供给到各储藏室的本实施方式的情况下,如图7所示,优化开口部64以及支承孔62的配置,从而对减小风机罩51的内部圧力非常有用。
其次,再次参照图2-图6,对具有上述说明的结构的冰箱1的动作进行说明。
首先,对仅对冷藏室3进行冷却的运转进行说明。如图2所示,根据控制单元的指示,使压缩机31运转,打开冷藏室挡板25,使送风机35运转。在该情况下,如图6(B)所示,风机罩51为关闭状态。
由冷却器32所冷却的空气顺序通过冷却室13的送风口13a、送风机35、风机罩51的内部空间、吸气管59、冷藏室挡板25、冷藏室供风道14以及出风口17,供给到冷藏室3。由此,能够以适当的温度对冷藏室3的内部所储藏的食品等进行冷却保存。
并且,如图3所示,供给到冷藏室3的内部的循环冷气从返回口22经由返回风道20返回到冷却室13的内部。在此,再次被冷却器32冷却。
其次,对仅对冷冻室4A进行冷却的运转进行说明。如图2所示,根据控制单元的指示,使压缩机31运转,关闭冷藏室挡板25,使送风机35运转,通过打开风机罩51,能够进行冷冻室4A的冷却。详细来说,风机罩51成为从如图6(A)所示的支承基体53离开的状态。由此,由冷却器32所冷却的空气,被配置在冷却室13的送风口13a的送风机35送出,顺序通过冷冻室供风道15以及出风口18,仅供给到冷冻室4A。
其结果,能够以适当的温度对冷冻室4A的内部所储藏的食品等进行冷却保存。并且,冷冻室4A内部的空气通过形成在下段冷冻室6内的返回口23,经由冷却室13的返回口13b,流向冷却室13的内部。
其次,对向蔬菜室7供给冷气进行说明。通过送风机35向冷冻室供风道15送出的空气的一部分,通过打开图2所示的蔬菜室挡板26,流向图3所示的蔬菜室供风道16,从出风口19向蔬菜室7排出。由此,能够对蔬菜室7内进行冷却。并且,在蔬菜室7循环的冷气,从图2所示的返回口24顺序通过蔬菜室返回风道21以及返回口13b,返回到冷却室13。
在此,参照图4,对冷却冷藏室3和冷冻室4A双方的动作进行说明。在该情况下,使风机罩51和支承基体53的分离长度比仅冷却冷冻室4A时的长度短。例如,风机罩51和支承基体53的分离长度与仅冷却冷冻室4A时的长度相比,为大约一半。此外,冷藏室挡板25为打开状态。在该状态下,在冷却器32冷却的冷气通过风扇吹送时,所吹送的冷气的一部分从风机罩51和支承基体53之间的间隙供给到冷冻室4A,冷气的另一部分经由吸气管59、冷藏室挡板25以及冷藏室供风道14供给到冷藏室3。
其次,参照图2,图4以及图6,对除霜运转的动作进行说明。在继续进行冷却运转时,霜附着在冷却器32的空气侧导热面,干扰传热,堵住气流通道。在此,开始用于去除附着在冷却器32的霜的除霜冷却运转或者除霜运转。
首先,对利用附着在冷却器32的霜的潜热进行冷藏室3的冷却的除霜冷却运转进行说明。在进行除霜冷却运转时,根据控制单元的指示,使压缩机31的运转停止,如图6(B)所示,使风机罩51为关闭状态。并且,根据控制单元的指示,打开冷藏室挡板25,使送风机35运转。由此,使空气在冷藏室3和冷却室13之间循环,能够通过该循环空气融化附着在冷却器32的霜。即,能够不进行除霜装置33的加热而进行除霜。与此同时,能够不使压缩机31运转而利用霜的溶解热进行冷藏室3的冷却。
在通常的除霜运转中,根据控制单元的指示,使压缩机31停止,对除霜装置33进行通电,使附着在冷却器32的霜融化。此时,风机罩51为关闭状态,堵住送风口13a,关闭冷藏室挡板25。由此,能够防止除霜装置33温暖的冷却室13内的空气向冷藏室供风道14以及冷冻室供风道15流出。其结果,能够提高冰箱1的冷却效率。
此外,在完成冷却器32的除霜时,根据控制单元的指示,停止对除霜装置33的通电,启动压缩机31,开始制冷回路的冷却。
以上是有关于本实施方式的冰箱1的动作的说明。
本发明不限于上述实施形态,可以在不脱离本发明的要旨的范围内进行各种变更。
Claims (7)
- 一种冰箱,其特征在于,该冰箱具有:多个储藏室;冷却器,其冷却经由供风道供给到所述储藏室的空气;冷却室,其配置有所述冷却器,形成有与所述储藏室连接的送风口;送风机,其设置在所述送风口;以及,风机罩,其从所述冷却室的外侧覆盖送风机,确保供冷却的所述空气流动的开口部并堵住所述送风口,在所述风机罩堵住所述送风口的状态下,经由吸气管连接所述风机罩的所述开口部和所述供风道。
- 根据权利要求1所述的冰箱,其特征在于,所述送风机具有通过马达在预定方向上旋转的风扇,所述吸气管在偏向与所述风扇的旋转方向的相反方向的位置与所述风机罩的所述开口部连接。
- 根据权利要求1或2所述的冰箱,其特征在于,在所述风机罩堵住所述送风口的状态下,所述吸气管的端部和所述风机罩的端部交叠。
- 根据权利要求1-3的任意一项所述的冰箱,其特征在于,所述冰箱还具有导向销,该导向销可滑动地贯通所述风机罩,所述风机罩具有呈大致四角形形状的主面部、从所述主面部向所述送风机侧延伸的侧面部以及供所述导向销贯通的支承孔,所述风机罩的所述支承孔配置在比所述侧面部更靠近外侧的位置。
- 根据权利要求4所述的冰箱,其特征在于,所述支承孔具有第1支承孔和第2支承孔,其中,所述第1支承孔形成在与偏置配置所述开口部的角部相邻的角部,所述第2支承孔形成在与所述第1支承孔对置的角部。
- 根据权利要求1所述的冰箱,其特征在于,所述风机罩以朝向上方且向后方倾斜的方式配置,在所述风机罩的内侧下端部形成倾斜面。
- 根据权利要求1所述的冰箱,其特征在于,所述送风机是轴流风机。
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JP6810958B2 (ja) * | 2016-11-11 | 2021-01-13 | アクア株式会社 | 冷蔵庫 |
CN106642974B (zh) * | 2016-12-27 | 2019-05-03 | 青岛海尔股份有限公司 | 具有风机遮蔽的冰箱的控制方法及冰箱 |
CN106766532B (zh) * | 2016-12-28 | 2018-04-20 | 青岛海尔股份有限公司 | 恒温冰箱及其控制方法 |
CN106820789B (zh) * | 2017-03-24 | 2023-06-13 | 宣城市艺雪制冷设备有限公司 | 一种双蒸发器立式制冷展示柜 |
WO2019056433A1 (zh) * | 2017-09-19 | 2019-03-28 | 合肥华凌股份有限公司 | 用于制冷设备的箱胆组件、制冷设备以及制冷设备的防凝露方法 |
CN108362066B (zh) * | 2018-02-09 | 2020-10-09 | 海尔智家股份有限公司 | 风机遮蔽装置及冰箱 |
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