WO2018103651A1 - 冰箱 - Google Patents
冰箱 Download PDFInfo
- Publication number
- WO2018103651A1 WO2018103651A1 PCT/CN2017/114691 CN2017114691W WO2018103651A1 WO 2018103651 A1 WO2018103651 A1 WO 2018103651A1 CN 2017114691 W CN2017114691 W CN 2017114691W WO 2018103651 A1 WO2018103651 A1 WO 2018103651A1
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- WO
- WIPO (PCT)
- Prior art keywords
- blower cover
- drive shaft
- blower
- 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
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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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
- F25D17/08—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
- F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
- F25D21/06—Removing frost
- F25D21/08—Removing frost by electric heating
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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 room, and more particularly to a refrigerator having a shielding device that appropriately blocks an air passage connected to the storage compartment.
- FIG. 10 schematically shows the refrigerator 100 described in this document.
- the refrigerating compartment 101, the freezing compartment 102, and the fruit and vegetable compartment 103 are formed from the top.
- a cooling chamber 104 for accommodating the cooler 108 is formed on the back side of the freezing compartment 102, and an opening portion for supplying cold air to each storage compartment is formed in the partition wall 105 that partitions the cooling chamber 104 and the freezing compartment 102. 106.
- a blower fan 107 that sends out cold air is disposed in the opening 106, and a blower cover 110 that covers the blower fan 107 is disposed on the freezer compartment 102 side.
- a damper 114 is disposed in the middle of the air passage 109 through which the cold air supplied to the refrigerating compartment 101 flows.
- a concave portion 111 having a substantially quadrangular shape is formed in the blower cover 110, and an opening portion 113 is formed by cutting an upper portion of the concave portion 111.
- the opening 113 of the blower cover 110 communicates with the air passage 109 on the refrigerator main body side.
- the refrigerator 100 having the above configuration operates as follows. Referring to Fig. 10, first, when both the refrigerating compartment 101 and the freezing compartment 102 are cooled, the blower cover 110 is separated from the blower fan 107, the windshield 114 is opened, and the blower fan 107 is rotated in this state. As described above, a part of the cold air cooled by the cooler 108 in the inside of the cooling chamber 104 is sent to the freezing compartment 102 by the air blow of the blower fan 107. Further, another part of the cold air is sent to the refrigerating compartment 101 via the air passage 109, the windshield 114, and the air passage 109. Thereby, both the freezing compartment 102 and the refrigerating compartment 101 are cooled.
- the blower fan 107 covers the blower fan 107, the windshield 114 is opened, and in this state, the cool air cooled by the cooler 108 is sent out by the blower fan 107.
- the opening 113 formed in the upper portion of the blower cover 110 communicates with the air passage 109. Thereby, the cold air sent by the blower fan 107 is supplied to the refrigerating compartment 101 through the opening 113, the windshield 114, and the air passage 109.
- blower cover 110 in which the opening 113 is formed, it is possible to appropriately cool the plurality of storage chambers by one cooler 108.
- Patent Document 1 JP-A-2013-2664
- the initial position of the blower cover 110 is determined by moving the blower cover 110 to the end of the movable range, and the opening and closing of the blower cover 51 is controlled based on the initial position, thereby serving as a refrigerator.
- Initial action in order to reliably move the blower cover 51 to the end portion, the drive mechanism continues to exert the driving force after the blower cover 51 reaches the end portion. Noise may occur due to the operation of such a drive mechanism.
- the present invention has been made in view of the above circumstances, and an object thereof is to provide a refrigerator capable of easily determining a position covered by a shielding device that appropriately closes an air passage, and reducing noise and vibration accompanying the determining operation.
- the refrigerator of the present invention includes: a refrigerating cycle cooler that cools air supplied to the storage compartment via a supply air passage; a cooling chamber provided with the cooler, and formed with the storage compartment a blower that sends the air supplied from the air supply port to the storage compartment; a shielding device that at least partially blocks the air supply port; and a control device that is opposite to the refrigeration cycle The operation of the blower and the shielding device is controlled.
- the shielding device has a blower cover that covers the blower from an outer side of the cooling chamber, a drive shaft that controls opening and closing operations of the blower cover, and an abutting surface that is in a closed state with the blower cover The ends of the ends are abutted.
- the control device performs a closing operation on the blower cover through the drive shaft as an initial operation until the blower cover abuts against the abutting surface.
- control device operates the drive shaft as the initial operation and in the case where the blower cover is moved across the entire movable range.
- the drive shaft is a columnar member that penetrates through the screw hole of the blower cover and is rotated by a stepping motor.
- a screw mechanism is formed between the blower cover and the drive shaft.
- the abutting surface is a main surface of a support base that supports the drive shaft.
- the refrigerator of the present invention includes: a refrigerating cycle cooler that cools air supplied to the storage compartment via a supply air passage; a cooling chamber provided with the cooler, and formed with the storage compartment a blower that sends the air supplied from the air supply port to the storage compartment; a shielding device that at least partially blocks the air supply port; and a control device that is opposite to the refrigeration cycle The operation of the blower and the shielding device is controlled.
- the shielding device has a blower cover that covers the blower from an outer side of the cooling chamber, a drive shaft that controls opening and closing operations of the blower cover, and an abutting surface that is in a closed state with the blower cover The ends of the ends are abutted.
- the control device performs a closing operation on the blower cover through the drive shaft as an initial operation until the blower cover abuts against the abutting surface. Therefore, by performing a closing operation on the blower cover until it abuts against the abutting surface, the initial action after the power is turned on is taken from Further, the opening and closing operation of the blower cover can be accurately controlled by using the abutting position as the initial position. Further, since the control cover is in stable ground contact with the abutting surface, even if the drive shaft continues to be closed after the control cover comes into contact with the abutting surface, it is possible to suppress a large noise.
- the control device operates the drive shaft as the initial operation and in the case where the blower cover is moved across the entire movable range. Therefore, even if the blower cover exists in any part, the blower cover and the contact surface can be reliably contacted. Further, even if the operating vibration is generated by the continuous operation of the drive shaft after the contact, the blower cover is in surface contact with the contact surface, so that a large noise is generated accompanying the operational vibration.
- the drive shaft is a columnar member that penetrates through the screw hole of the blower cover and is rotated by a stepping motor.
- a screw mechanism is formed between the blower cover and the drive shaft.
- the control device rotates the drive shaft by the driving force of the stepping motor, and the blower cover is moved to abut against the abutting surface by the screw mechanism. Therefore, by using a stepping motor capable of fine angle adjustment to rotate the drive shaft, the position control of the blower cover can be accurately performed. Further, the stepping motor continues to rotate until the blower cover abuts against the abutting surface, so that the reference position which serves as a reference for the operation of the blower cover can be reliably specified.
- the abutting surface is a main surface of a support base that supports the drive shaft. Therefore, the initial position is detected by abutting the blower cover against the support base that supports the drive shaft, so that the initial position can be accurately detected.
- FIG. 1 is a front view showing an appearance of a refrigerator according to an embodiment of the present invention.
- FIG. 2 is a side cross-sectional view showing an internal structure of a refrigerator according to an embodiment of the present invention.
- FIG 3 is a side cross-sectional view showing a structure in the vicinity of a cooling chamber of the refrigerator according to the embodiment of the present invention.
- FIG. 4 is an exploded perspective view showing a shielding device used in the refrigerator according to the embodiment of the present invention.
- FIG. 5 is a view showing a shielding device used in the refrigerator according to the embodiment of the present invention, wherein (A) is a perspective view showing a shielding device in a non-closed state, and (B) is a cross-sectional view showing a shielding device in a non-closed state. C) is a perspective view of the shielding device showing the closed state, and (D) is a cross-sectional view of the shielding device showing the closed state.
- FIG. 6 is a block diagram showing a connection configuration of a refrigerator according to an embodiment of the present invention.
- FIG. 7 is a flowchart collectively showing a cooling operation of the refrigerator according to the embodiment of the present invention.
- FIG. 8 is a flowchart showing an initial operation of the refrigerator according to the embodiment of the present invention.
- FIG. 9 is a flowchart showing in detail the cooling operation of the refrigerator according to the embodiment of the present invention.
- Fig. 10 is a side sectional view showing a refrigerator according to the background art.
- Fig. 11 is a perspective view showing a blower cover used in the refrigerator according to the background art.
- the refrigerator 1 according to the embodiment of the present invention will be described in detail based on the drawings.
- the same components are denoted by the same reference numerals, and the description thereof will not be repeated.
- each of the up, down, left, and right directions is appropriately used, and the left and right sides indicate the right and left when the refrigerator 1 is viewed from the front.
- FIG. 1 is a front elevational view showing a schematic structure of a refrigerator 1 of the present embodiment.
- the refrigerator 1 is provided with a heat insulating box 2 as a main body.
- a storage chamber for storing food or the like is formed inside the heat insulating box 2.
- the uppermost section is the refrigerating compartment 3
- the lower section of the lower section is the ice making compartment 4
- the right side is the upper section freezing compartment 5
- the lower section is the lower section freezing compartment 6, and the lowermost section is the fruit and vegetable compartment 7.
- the ice making compartment 4, the upper freezing compartment 5, and the lower freezing compartment 6 are storage compartments in the freezing temperature range, and the following description may be referred to collectively as the freezing compartment 4A.
- the front surface of the heat insulating box 2 is opened, and the heat insulating doors 8 to 12 are respectively provided in an opening and closing manner in the openings corresponding to the respective storage chambers.
- the heat insulating doors 8a and 8b divide and seal the front surface 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.
- the heat insulating doors 9 to 12 are integrally combined with the storage container, and are supported by the heat insulating box 2 so as to be freely pulled out to the front of the refrigerator 1.
- FIG. 2 is a side cross-sectional view showing a schematic structure of the refrigerator 1.
- the heat insulating box 2 which is the main body of the refrigerator 1 includes an outer case 2a made of a steel plate having a front surface open, and a synthetic resin having a gap in the outer case 2a and having a front surface open.
- Inner box 2b A heat insulating material 2c made of foamed polyurethane is filled in the gap between the outer casing 2a and the inner casing 2b.
- 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 separated from the freezing compartment 4A located in the lower section by a thermally insulating partition wall 28.
- the ice making chamber 4 inside the freezing compartment 4A and the upper freezing compartment 5 are partitioned by a partition wall (not shown). Further, between the ice making chamber 4 and the upper freezing chamber 5 and the lower freezing chamber 6 provided in the lower stage, the cooled air, that is, the cold air flow, is freely communicated. And the freezer compartment 4A is separated from the fruit and vegetable compartment 7 by the insulating partition wall 29.
- a refrigerating compartment supply air passage 14 is formed on the back surface of the refrigerating compartment 3, and is partitioned by a synthetic resin spacer 45 as a supply air passage for supplying cold air to the refrigerating compartment 3.
- An air outlet 17 for causing a cold airflow to the refrigerating compartment 3 is formed in the refrigerating compartment supply air passage 14.
- a refrigerating compartment windshield 25 is provided in the refrigerating compartment supply air passage 14.
- the refrigerating compartment windshield 25 is a windshield that is opened and closed by a motor or the like, and controls the flow rate of the cold air supplied to the refrigerating compartment 3 to maintain the temperature inside the refrigerating compartment 3 at an appropriate level.
- a cold airflow cooled by the cooler 32 is supplied to the freezer compartment of the freezing compartment 4A.
- a cooling chamber 13 is formed on the back side of the freezer compartment supply air passage 15, and a cooler 32, which is an evaporator for cooling the air circulating in the refrigerator, is disposed inside the cooling chamber 13.
- the cooler 32 is connected to a compressor 31, a heat sink (not shown), and a capillary unit, which is an expansion unit (not shown), via a refrigerant pipe, and constitutes a vapor compression refrigeration cycle.
- FIG. 3 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 inside the heat insulating box 2 on the back side of the freezing chamber supply air passage 15.
- the cooling chamber 13 and the freezing compartment 4A are partitioned by a spacer 46 made of synthetic resin.
- the freezer compartment supply air passage 15 formed in front of the cooling chamber 13 is a space formed between the partition body 46 and the synthetic resin front surface cover 47 assembled in front thereof, and flows through the cold air cooled by the cooler 32. Windy road.
- the front surface cover 47 is formed with an air outlet 18 which is an opening for blowing cold air into the freezing compartment 4A.
- a return port 23 for returning air from the freezing compartment 4A to the cooling compartment 13 is formed on the lower back surface of the lower freezing compartment 6, a return port 23 for returning air from the freezing compartment 4A to the cooling compartment 13 is formed. 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 returning cold air from each storage chamber is sucked into the inside of the cooling chamber 13.
- a defrosting heater 33 is provided below the cooler 32 as a defrosting unit that melts and removes the frost adhering to the cooler 32.
- the defrosting heater 33 is a resistance heating type heater.
- An air outlet 13a which is an opening that is connected to each storage compartment, is formed in the upper portion of the spacer 46.
- the air blowing port 13a is an opening through which the cold air cooled by the cooler 32 flows, and the cooling chamber 13 communicates with the refrigerating compartment supply air passage 14 and the freezing compartment supply air passage 15.
- a blower 35 that sends cold air toward the freezing compartment 4A or the like is disposed in the air blowing port 13a.
- the blower 35 is an axial flow blower, and includes a rotary fan 37 and a casing 36 formed with a wind tunnel 36a which is a substantially cylindrical opening.
- the casing 36 is attached to the air supply port 13a of the cooling chamber 13.
- a shielding device 50 is provided outside the air blowing port 13a of the cooling chamber 13, and the shielding device 50 is provided with a blower cover 51 for closing the air blowing port 13a.
- the supporting base 53 is mounted, for example, in close proximity to the casing 36 of the blower 35.
- a guide duct 59 that connects the upper end opening of the blower cover 51 to the refrigerating compartment supply air passage 14 is disposed. The forward and backward movement for opening and closing the blower cover 51 is controlled by the drive shaft 61 indicated by a broken line, and the related matters will be described later.
- the surface of the blower cover 51 that faces the cooling chamber 13 is formed into a concave shape. As a result, the blower cover 51 does not come into contact with the fan 37 that protrudes toward the discharge side from the outer casing 36, but abuts against the support base 53 outside the wind tunnel 36a, and the air supply port 13a can be sealed. Further, the shielding device 50 is covered by the shielding device cover 49 from the front. A gap that allows the blower cover 51 to move in the front-rear direction is formed between the shielding device 50 and the shielding device cover 49. This gap communicates with the freezer compartment supply air passage 15.
- FIG. 4 is a perspective view showing the respective members constituting the shielding device 50 in the front-rear direction.
- the shielding device 50 includes a blower cover 51 that covers the fan 37, a support base 53 that mounts the blower cover 51 to the main body of the refrigerator 1, and a guide duct 59 that connects the blower cover 51 to the air passage on the refrigerator main body side.
- the main function of the shielding device 50 is to supply the cold air sent by the rotation of the fan 37 to a desired storage room by appropriately setting the fan 37 to a non-closed state or a closed state.
- the shielding device 50 is in the closed state, the warm air generated in the defrosting stroke of the cooler 32 is prevented from flowing into the freezing compartment 4A or the like.
- the heating is the air heated by the defrosting heater 33.
- the blower cover 51 is obtained by roughly injection molding a synthetic resin material into a lid shape, and has a main surface portion 69 having a substantially square shape in a front view and a side surface portion 70 extending rearward from a peripheral edge portion of the main surface portion 69.
- a screw hole 63 is formed in a circular shape near the center of the main surface portion 69, and a screw groove is formed by spirally recessing the inner side surface of the screw hole 63.
- the opening portion 64 is formed by opening the side surface portion 70 on the upper side of the blower cover 51.
- the opening 64 is coupled to the opening 65 of the guide duct 59 in a state where the blower cover 51 covers the blower 35.
- a support hole 62 for inserting a guide pin 54 to be described later is formed in the vicinity of the lower left corner portion of the blower cover 51 and in the vicinity of the upper right corner portion.
- blower cover 51 The action of the blower cover 51 is as described above, in that the fan 37 disposed in the air outlet 13a of the cooling chamber 13 is substantially covered.
- the opening portion 64 is formed in the upper portion of the blower cover 51. Therefore, when the blower cover 51 covers the fan 37, the cold air sent by the fan 37 can be supplied to the refrigerator compartment 3 via the opening 64.
- the drive shaft 61 has a substantially cylindrical shape, and is provided with a thread (not shown) in which a part of the side surface is spirally continuous.
- a stepping motor (not shown) is built in the drive shaft 61, and the drive shaft 61 is rotated by a given angle by the driving force of the motor.
- the cold air sent by the fan 37 (not shown) is supplied to the freezing compartment 4A via this gap.
- the blower cover 51 moves toward the support base 53 side, and the side surface portion 70 of the blower cover 51 abuts against the frame portion 71 of the support base 53, and the gap is not formed. Disabled.
- the cold air sent out by the fan 37 (not shown) can be supplied to the refrigerating compartment 3 via the opening 64 and the guide duct 59 without being supplied to the freezing compartment 4A.
- the support base 53 mainly has a frame portion 71 having a rectangular frame shape in 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 shaft support portion 72 and the corner portion of the frame portion 71. And erected in the lower left corner and the upper right corner of the frame portion 71 Guide pin 54.
- the frame portion 71 is a frame-shaped plate member that mechanically supports the entire support base 53 and is provided with a plurality of holes 73 in the vicinity of the four corners.
- the hole portion 73 penetrates the support base 53 in the thickness direction.
- the shielding device 50 including the frame portion 71 is fixed to the spacer 46 by a fixing means such as a screw penetrating through the hole portion 73.
- the guide pin 54 is a columnar member that is erected at a position corresponding to the support hole 62 of the blower cover 51. Each of the guide pins 54 is slid by being inserted into the support hole 62, so that the movement in the front-rear direction of the blower cover 51 is stably guided.
- the guide duct 59 has a function of connecting the opening 64 of the blower cover 51 to the refrigerating compartment supply duct 14 when the blower cover 51 closes the closed state of the air outlet 13a shown in FIG.
- the guide duct 59 is made of injection-molded synthetic resin, and includes a front surface portion 40 facing forward and a side surface portion 41 facing both sides.
- the opening 65 formed at the lower end of the guide duct 59 is disposed at a portion that coincides with the opening 64 of the blower cover 51 in the closed state.
- the opening 65 of the guide duct 59 that opens downward is substantially the same shape and size as the opening 64 of the blower cover 51 that opens upward.
- the opening on the rear side of the guide duct 59 (not shown) is connected to the inlet portion 14a shown in Fig. 3 .
- the screw groove formed on the inner side surface of the screw hole 63 of the blower cover 51 and the screw formed on the outer side surface of the drive shaft 61 form a screw that advances and retracts the blower cover 51 in the front-rear direction.
- the screw mechanism can also be configured by a screw thread formed on the inner side surface of the blower cover 51 and a screw groove formed on the outer side surface of the drive shaft 61.
- FIG. 5(A) is a perspective view showing the shielding device 50 in a non-closed state
- Fig. 5(B) is a cross-sectional view taken along line ⁇ - ⁇ of Fig. 5(A)
- Fig. 5(C) is a shielding device 50 showing a closed state
- FIG. 5(D) is a cross-sectional view of the ⁇ - ⁇ cross section of FIG. 5(C).
- the blower cover 51 in the non-closed state, the blower 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 blower cover 51 is separated from the support base 53 and a gap is formed between the blower cover 51 and the support base 53. In this state, the opening portion 64 formed in the upper portion of the blower cover 51 is not in communication with the opening portion 65 formed in the lower portion of the guide duct 59.
- the fan 37 shown in FIG. 3 is rotated and blown in this state, the sent cold air is supplied to the freezing compartment 4A via the gap.
- the drive shaft 61 is disposed inside the blower cover 51, that is, on the side of the cooling chamber 13 on the rear side of the blower cover 51. Further, in this state, the guide pin 54 is disposed on the side of the cooling chamber 13 on the rear side of the blower cover 51.
- the drive shaft 61 is rotated counterclockwise as viewed from the front, for example.
- the blower cover 51 is moved rearward by the above-described screw mechanism, and the rear end portion of the side surface portion 70 of the blower cover 51 abuts against the front surface of the support base 53 as the abutting surface.
- the guide pin 54 of the support base 53 is inserted into the support hole 62 of the blower cover 51, and when the blower cover 51 is opened and closed, the guide pin 54 slides inside the support hole 62. Further, the guide pin 54 and the support hole 62 are disposed in the vicinity of the opposite corner portions of the blower cover 51. Thereby, the opening and closing operation of the blower cover 51 is stably performed by sliding the guide pin 54 inside the support hole 62.
- the cold air sent from the fan 37 is not supplied to the freezing compartment 4A.
- the cold air sent from the fan 37 is sent to the refrigerating compartment 3 via the blower cover 51 and the guide duct 59.
- the drive shaft 61 is disposed outside the blower cover 51, that is, on the side of the freezer compartment 4A in front of the blower cover 51. Further, in this closed state, the guide pin 54 is disposed on the front side of the blower cover 51, that is, on the side of the cooling chamber 13. So even the cooling room 13 The defrosting operation or the like is performed in a high temperature state, and the drive shaft 61 and the guide pin 54 are also disposed on the low temperature and stable freezer compartment 4A side. Thereby, moisture is suppressed from adhering to the drive shaft 61 and the guide pin 54, and it freezes.
- the connection configuration of the refrigerator 1 having the above configuration will be described with reference to Fig. 6 .
- the control device 80 is configured by, for example, a CPU, receives input from various sensors described below, performs predetermined arithmetic processing, and controls operations of various constituent devices such as the compressor 31 based on the processing results. Further, the control device 80 may be provided with a semiconductor storage device that stores various constants and programs for performing a cooling operation.
- the temperature sensor 81 and the timer 82 are connected to the input side terminal of the control device 80.
- the temperature sensor 81 is attached to one or more of the above-described refrigerating compartment 3, freezing compartment 4A, fruit and vegetable compartment 7, and cooling compartment 13, and measures the indoor temperature thereof.
- the timer 82 measures the cooling time for cooling the refrigerator compartment 3, the freezing compartment 4A, the fruit and vegetable compartment 7, and the cooling compartment 13, or the running time of the defrosting heater 33, and the like.
- the timer 82 is realized as part of the functions of the control device 80.
- the compressor 31, the blower 35, the shielding device 50, the refrigerating compartment windshield 25, and the defrosting heater 33 are connected to the output side terminal of the control device 80.
- Various devices such as the compressor 31 operate in accordance with an output signal output from the control device 80.
- FIG. 7 is a flowchart showing the entire refrigeration operation of the refrigerator 1.
- FIG. 8 is a flowchart showing an initial operation of the refrigerator 1.
- FIG. 9 is a flowchart showing an operation operation of the refrigerator 1 after the compressor 31 is stopped.
- step S10 determines the initial position of the blower cover 51 of the shielding device 50 shown in Fig. 4, the details of which will be described in detail with reference to Fig. 8. Further, when the control device 80 recovers from a power failure or the like, the initial operation of the shielding device is also performed.
- step S20 the control device 80 determines whether or not the compressor 31 of the refrigeration cycle has stopped operating.
- the control device 80 performs control in the case where the compressor 31 is stopped in step S30. The details of step S30 will be described later.
- the control device 80 executes normal cooling control for cooling each storage chamber to a predetermined temperature range.
- control device 80 appropriately performs the opening and closing operation of the shielding device 50 in step S60, and appropriately opens and closes the refrigerating compartment windshield 25 and the like in step S61, and causes the refrigerating compartment 3, the freezing compartment 4A, and the vegetable and vegetable compartment shown in FIG. 7 remains at a given temperature range.
- the compressor 31 is operated in accordance with an instruction from the control unit 80, and the refrigerating compartment windshield 25 is opened to operate the blower 35.
- the shielding device 50 since the shielding device 50 is in the closed state, it is possible to suppress leakage of cold air from between the blower cover 51 and the guide duct 59, and to supply the air passage 14 to the refrigerating chamber via the refrigerating chamber. 3 The cold air is supplied, so that the refrigerating compartment 3 can be efficiently cooled.
- 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 blower cover 51, the guide air duct 59, the refrigerating compartment windshield 25, the refrigerating compartment supply air passage 14, and the blowing.
- the outlet 17 is supplied to the refrigerating compartment 3.
- the circulating cold air supplied to the inside of the refrigerating compartment 3 is returned to the inside of the cooling chamber 13 via a return port (not shown) and a return air passage. To this end, it is cooled again by the cooler 32.
- the compressor 31 is operated, the refrigerating compartment windshield 25 is closed, the blower 35 is operated, and the blower cover 51 is opened.
- the blower cover 51 is as shown in Fig. 5(A).
- the non-closed state in which the base body 53 is separated.
- the air cooled by the cooler 32 is sent out by the air blower 35 disposed in the air blowing port 13a of the cooling chamber 13, and passes through the gap between the blower cover 51 and the support base 53 through the freezer compartment supply air passage 15 and the blowout port 18 in order. It is supplied only to the freezing compartment 4A.
- the food or the like stored in the inside of the freezing compartment 4A can be cooled and stored at an appropriate temperature. Then, the air inside the freezing compartment 4A passes through the return port 23 formed deep in the lower section 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 out by the blower 35 is supplied to the fruit and vegetable room (not shown) by opening a windshield of a fruit and vegetable compartment (not shown), and flows out to the fruit and vegetable compartment 7. Thereby, the inside of the fruit and vegetable compartment 7 can be cooled. Then, the cold air circulated in the fruit and vegetable compartment 7 passes through the fruit and vegetable compartment return air passage 21 and the return port 13b from the return port 24, and returns to the cooling chamber 13.
- the length separating the blower cover 51 from the support base 53 is set to be shorter than in the case of cooling only the freezing compartment 4A.
- the length separating the blower cover 51 from the support base 53 is half of that in the case where only the freezing compartment 4A is cooled.
- the refrigerating compartment windshield 25 is set to an open state. When the cool air cooled by the cooler 32 is sent out by the fan 37 in this state, a part of the sent cold air is supplied from the gap between the blower cover 51 and the support base 53 to the freezing compartment 4A, and the other part of the cool air passes through the guide duct 59.
- the refrigerating compartment windshield 25 and the refrigerating compartment supply air passage 14 are supplied to the refrigerating compartment 3. Therefore, both the refrigerating compartment 3 and the freezing compartment 4A can be simultaneously cooled.
- the drive shaft 61 shown in FIG. 5(A) or the like exists in the atmosphere gas to which the cold air cooled by the cooler 32 is supplied, and thus the environment in which moisture is hard to adhere around the drive shaft 61 is obtained.
- the control device 80 performs the normal cooling control, the possibility that the screw mechanism formed between the drive shaft 61 and the blower cover 51 is frozen is small.
- control device 80 performs the defrosting operation in step S40 in accordance with the operation state of the refrigerator 1. Specifically, when the compressor 31 is operated to cool the respective storage chambers for a certain period or longer, it is determined that the frost of the cooler 32 has progressed to a certain level or more, and the step S40 is performed. The frost runs. Further, after the defrosting operation of step S40 is completed, the control device 80 executes the resume operation of the prior operation as the normal cooling control in step S50. These controls will be described later.
- step S11 the power of the refrigerator 1 is turned on.
- the power source may be turned on by connecting the power plug of the refrigerator 1 to the commercial power source, or the power source may be restored from the power failure state.
- the control device 80 determines that the blower cover 51 is turned on and the cold air is sent to the freezing compartment 4A, when the abnormal operation in which the indoor temperature of the freezing compartment 4A does not fall actually occurs, The position of the blower cover 51 is initialized, and the following operations can be performed.
- step S12 in order to determine the position of the blower cover 51, the drive shaft 61 is rotated to move the blower cover 51. Specifically, in order to perform the opening and closing control of the blower cover 51, it is necessary to determine the current position of the blower cover 51.
- the refrigerator 1 of the present embodiment does not include a position sensor for measuring the position of the blower cover 51. Therefore, in the present embodiment, the initial position of the blower cover 51 is determined by moving the blower cover 51 to the end of the movable range when the power of the refrigerator 1 is turned on.
- the drive shaft 61 is rotated by the stepping motor to move the blower cover 51 to the movable range. rear end.
- the number of pulses applied to the stepping motor that drives the drive shaft 61 is set to an amount required to move the blower cover 51 from the front end of the movable range to the rear end.
- the number of steps of the pulse of the stepping motor required to move the blower cover 51 over the entire movable range, that is, from the front end to the rear end is 100, and the blower cover 51 is positioned in the vicinity of the center portion of the movable range.
- the control device 80 applies a pulse to the stepping motor so that the number of steps becomes 100. Therefore, when the blower cover 51 is moved rearward by rotating the drive shaft 61 by using the stepping motor, the stepping motor is rotated by about 50 steps, and the rear side of the side surface portion 70 of the blower cover 51 is added in step S13. The side abuts against the front main surface of the support base 53.
- a pulse of about 50 steps is applied to the stepping motor incorporated in the drive shaft 61.
- the stepping motor that continuously applies the pulse generates vibration while the step S14 is "NO".
- the rear side of the side surface portion 70 of the blower cover 51 is brought into contact with the front main surface of the support base 53, and the blower cover 51 is firmly fixed. Therefore, even if vibration is generated from the stepping motor, No loud noise or vibration will occur.
- step S14 the control device 80 ends the rotation operation of the stepping motor.
- the control device 80 can recognize that the position of the blower cover 51 is at the rear end of the movable range, and then shifts to the above-described step S20 of performing the normal cooling operation.
- the drive shaft 61 is rotated by the stepping motor, and the blower cover 51 is retracted to be in surface contact with the support base 53, so that the initial position of the blower cover 51 can be determined without using the sensor. Further, since the rear portion of the side surface portion 70 of the blower cover 51 is in stable ground contact with the front main surface of the support base 53, the pulse is continuously applied to the stepping motor after the blower cover 51 is contacted, and large vibration or noise is suppressed. .
- step S31 the control device 80 confirms whether or not the shielding device 50 is in an open, non-closed state.
- the control device 80 rotates the drive shaft 61 in step S32 to cause the blower cover 51 to Moving rearward, the shielding device 50 is turned off.
- the control device 80 rotates the drive shaft 61 until the rear end of the side surface portion 70 of the blower cover 51 comes into contact with the front surface of the support base 53.
- the control device 80 maintains the state, and the process proceeds to step S33.
- the shielding device 50 is in the closed state shown in Fig. 5(C).
- the drive shaft 61 of the shielding device 50 is not disposed in the internal space of the blower cover 51, and protrudes toward the front side as the outer side of the blower cover 51.
- the drive shaft 61 is disposed closer to the freezer compartment 4A than the blower cover 51.
- the heat exchange dominated by the cooler 32 is not performed, and therefore there is a risk that the indoor temperature rises and a large temperature change occurs in the interior of the cooling chamber 13.
- the cooling chamber 13 becomes a high temperature, and this risk becomes conspicuous.
- the shielding device 50 is in an open state, the drive shaft 61 of the shielding device 50 is disposed inside the blower cover 51.
- the internal space of the blower cover 51 communicates with the cooling chamber 13 via the air blowing port 13a.
- the drive shaft 61 comes into contact with high-temperature air or air from the cooling chamber 13 having a large temperature change, so that moisture adheres around the drive shaft 61. Thereafter, the water is frozen, and it is considered that it is difficult to operate the screw mechanism formed between the drive shaft 61 and the blower cover 51.
- the control device 80 turns the shielding device 50 into a closed state, and the drive shaft 61 is retracted to the outside of the blower cover 51, that is, the freezer compartment 4A side. . Therefore, when the compressor 31 is stopped as described above, the drive shaft 61 is disposed on the freezer compartment 4A side where the indoor temperature is low and stable even during the defrosting stroke. Therefore, The drive shaft 61 is not exposed to a high-temperature atmosphere gas, and a large temperature change does not occur, so that the moisture is prevented from adhering around the drive shaft 61. Thereby, it is possible to prevent the screw mechanism that drives the blower cover 51 from freezing and becoming inoperable.
- the guide pin 54 shown in FIG. 5(C) protrudes outward from the blower cover 51.
- the guide pin 54 is disposed on the side of the freezer compartment 4A where the low temperature state is stably maintained, and the state in which moisture is adhered to the surface of the guide pin 54 is suppressed.
- step S33 the control device 80 confirms whether or not the refrigerating compartment windshield 25 has been opened, and in the case where the refrigerating compartment windshield 25 has been opened, that is, YES in step S33, the refrigerating compartment windshield 25 is closed in step S34. On the other hand, in a case where the refrigerating compartment windshield 25 is closed, that is, in the case of NO in the step S33, the control device 80 maintains the state and shifts to the step S41.
- the refrigerating compartment windshield 25 is inserted in the middle of the refrigerating compartment supply air passage 14.
- the refrigerating compartment damper 25 When the refrigerating compartment damper 25 is opened during the period in which the compressor 31 is stopped, the air is unnecessarily circulated through the refrigerating compartment supply air passage 14.
- the moisture contained in the cold air of the refrigerating compartment 3 reaches the cooling chamber 13 from the refrigerating compartment 3 via the return air passage, and there is a risk that the drive shaft 61 freezes due to the moisture. Further, the air is naturally convected by the air supply passage 14 through the refrigerating compartment, and there is a risk that the indoor temperature of each storage compartment rises.
- the control device 80 sets the refrigerating compartment windshield 25 to the closed state.
- the control device 80 closes the fruit and vegetable compartment windshield at the same time as described above. Specifically, the control device 80 determines in step S33 whether the fruit and vegetable compartment windshield is in an open state, and if the fruit and vegetable compartment windshield is in an open state, the fruit and vegetable compartment windshield is closed in step S34. In this way, it is possible to prevent the cold air including the moisture generated from the stored matter such as fruits and vegetables from returning to the cooling chamber 13 via the fruit and vegetable room return air passage 21. Therefore, the effect of suppressing the adhesion of moisture on the surface of the drive shaft 61 can be made remarkable.
- the defrosting stroke is performed in step S41.
- the defrosting heater 33 is energized in accordance with an instruction from the control device 80. In this manner, the cooling chamber 13 is warmed by the heat of the defrosting heater 33, and the frost adhering to the cooler 32 is melted.
- the shielding device 50 is in the closed state, and the drive shaft 61 is retracted to the freezer compartment 4A side that maintains the lower temperature state. Therefore, since the heating is not in contact with the drive shaft 61 heated by the defrosting heater 33, a large temperature change does not act on the drive shaft 61, and moisture can be suppressed from adhering to the surface of the drive shaft 61.
- the shielding device 50 in the defrosting process, is in a closed state, and further, the refrigerating compartment windshield 25 is closed, so that the heating in the cooling chamber 13 heated by the defrosting heater 33 is prevented from being supplied to the refrigerating compartment.
- the air passage 14 and the freezer compartment supply air passage 15 flow out.
- defrosting cooling operation in which the cooling of the refrigerating compartment 3 is performed 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 device 80, and as shown in Fig. 5(C), the shielding device 50 is turned off.
- the refrigerating compartment windshield 25 is opened to operate the blower 35.
- air is circulated between the refrigerating compartment 3 and the cooling chamber 13, and the frost adhering to the cooler 32 can be melted by the circulating air. That is, defrosting can be performed without performing heating of the defrosting heater 33.
- the cooling of the refrigerating compartment 3 can be performed by the heat of fusion of the frost without operating the compressor 31. Further, since the shielding device 50 is in a closed state and the drive shaft 61 is disposed outside the blower cover 51, moisture containing cold air sent from the cooling chamber 13 to the refrigerating chamber 3 is prevented from adhering to the drive shaft 61.
- step S42 it is judged whether or not the defrosting action of the cooler 32 has ended.
- the completion of the defrosting is determined by the control device 80 based on the output of the temperature sensor 81 indicating that the cooling chamber 13 has reached a given temperature, or the output of the timer 82 indicating that the time for performing the defrosting operation has reached a given time.
- the process proceeds to step S51 to resume the operation from the defrosting operation.
- the control device 80 detects the period before the end, that is, the period of "NO" in the step S42, and continuously performs the defrost operation.
- step S51 referring to Fig. 3, after the completion of the above-described defrosting operation, the control device 80 operates the compressor 31 of the refrigeration cycle in order to restart the normal cooling operation. In this manner, the internal air of the cooling chamber 13 heated by the defrosting stroke is cooled by the cooler 32 of the refrigeration cycle.
- the control device 80 since the internal air of the cooling chamber 13 is not sufficiently cooled, the control device 80 causes the shielding device 50 and the refrigerating compartment windshield 25 to be closed in order to suppress leakage of the internal air in the high temperature state from the cooling chamber 13 to the storage compartment.
- the blower 35 is not rotated. Also in this step, since the drive shaft 61 is disposed outside the blower cover 51, the drive shaft 61 does not come into contact with the air in the cooling chamber 13 that is not sufficiently cooled, and moisture is prevented from adhering around the drive shaft 61.
- step S52 it is confirmed whether or not the cooling chamber 13 is sufficiently cooled. This confirmation is performed by the control device 80 based on the output of the temperature sensor 81 indicating that the temperature of the cooling chamber 13 has dropped to a certain temperature, or the output of the timer 82 indicating that the time during which the cooling chamber 13 has been cooled by the cooler 32 has reached a certain time. .
- the control device 80 Before the cooling chamber 13 is sufficiently cooled, that is, in the case of NO in the step S52, the control device 80 performs the cooling operation of cooling the cooling chamber 13 by the cooler 32. On the other hand, if the cooling chamber 13 has been sufficiently cooled, that is, YES in step S52, the control device 80 proceeds to step S20 in order to perform the normal cooling operation. Thereafter, as shown in FIG. 7, in the case where the compressor 31 is operated, in order to cool the respective storage chambers, the control device 80 appropriately performs the opening and closing operations of the shielding device 50 and the refrigerating compartment windshield 25 in steps S60 and S61.
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Abstract
一种冰箱(1),通过至少部分封堵冷却室(13)的送风口(13a)的遮蔽装置(50),控制送至各贮藏室的风量。控制冰箱(1)的运行动作的控制装置(80),通过驱动轴(61)对送风机罩(51)执行关闭动作直至送风机罩(51)与支撑基体(53)抵接,由此确定送风机罩(51)的初始位置,并以该初始位置为基准控制送风机罩(51)的开闭量。
Description
本申请要求了申请日为2016年12月06日,申请号为2016-236964,发明名称为“风扇遮蔽控制”的日本专利申请的优先权,其全部内容通过引用结合在本申请中。
本发明涉及在贮藏室内对食品等进行冷却保存的冰箱,尤其涉及具备遮蔽装置的冰箱,该遮蔽装置适当封堵与贮藏室相连的风路。
现有技术中,专利文献1所记载的通过一个冷却器来适当冷却多个贮藏室的冰箱是公知的。图10示意地示出该文献所记载的冰箱100。在图10所示的冰箱100中,从上方起形成有冷藏室101、冷冻室102以及果蔬室103。在冷冻室102的里侧,形成有对冷却器108进行收纳的冷却室104,在对冷却室104与冷冻室102进行区划的区划壁105,形成有用于将冷气向各贮藏室供给的开口部106。另外,在该开口部106,配设有送出冷气的送风风扇107,覆盖该送风风扇107的送风机罩110配置于冷冻室102侧。在提供给冷藏室101的冷气所流通的风路109的途中,配设有风挡(damper)114。
参照图11,详述上述送风机罩110。送风机罩110中形成有呈大致四角形形状的凹部111,将凹部111的上部部分切开而形成有开口部113。在此,在送风机罩110覆盖上述送风风扇107的状况下,送风机罩110的开口部113与冰箱主体侧的风路109连通。
上述构成的冰箱100按如下方式动作。参照图10,首先,在将冷藏室101以及冷冻室102两者冷却的情况下,使送风机罩110从送风风扇107分离,打开风挡114,在该状态下使送风风扇107旋转。如此,在冷却室104的内部经冷却器108冷却后的冷气的一部分通过送风风扇107的送风力而被送至冷冻室102。另外,该冷气的另一部分经由风路109、风挡114以及风路109而被送至冷藏室101。由此,冷冻室102和冷藏室101两者被冷却。
另一方面,在仅将冷藏室101冷却时,通过送风机罩110来覆盖送风风扇107,打开风挡114,在该状态下通过送风风扇107来将经冷却器108冷却后的冷气送出。若使送风机罩110成为关闭状态,则在送风机罩110的上部形成的开口部113将与风路109连通。由此,由送风风扇107送出的冷气经由上述开口部113、风挡114、风路109而被提供给冷藏室101。
如上所述,通过使用形成有开口部113的送风机罩110,能以一个冷却器108来适当冷却多个贮藏室。
现有技术文献
专利文献
专利文献1:JP特开2013-2664号公报
发明内容
发明要解决的课题
然而,在专利文献1记载的冰箱中,为了使用送风机罩110来精密地控制冷气的送风量,需要精密地控制送风机罩110的位置,但确定送风机罩110的位置并非是容易的课题。作为其应对方法,考虑使用位置传感器来始终监测送风机罩110的位置,并根据该位置传感器的输出来控制送风机罩110的开闭度。但是,因采用位置传感器,会产生冰箱整体成本上升的课题。
作为另一应对方法,考虑通过使送风机罩110移动至可动范围的端部来确定送风机罩110的初始位置,并以该初始位置为基准来控制送风机罩51的开闭,以此作为冰箱的初始动作。但在这样的初始动作中,为了使送风机罩51可靠地移动至端部,存在送风机罩51到达端部后驱动机构仍继续发挥驱动力的情况。因这样的驱动机构的动作,有可能产生噪音。
本发明鉴于上述事实而提出,其目的在于,提供一种冰箱,能容易确定适当关闭风路的遮蔽装置所覆盖的位置,且使伴随该确定动作的噪音和振动得以降低。
用于解决课题的手段
本发明的冰箱具备:冷冻循环的冷却器,其将经由供给风路而提供给贮藏室的空气进行冷却;冷却室,其配设有所述冷却器,且形成有与所述贮藏室相连的送风口;送风机,其将从所述送风口供给的所述空气向所述贮藏室送出;遮蔽装置,其至少部分地封堵所述送风口;以及控制装置,其对所述冷冻循环、所述送风机以及所述遮蔽装置的动作进行控制。所述遮蔽装置具有:送风机罩,其从所述冷却室的外侧覆盖所述送风机;驱动轴,其控制所述送风机罩的开闭动作;以及抵接面,其与关闭状态的所述送风机罩的端部进行面抵接。所述控制装置,作为初始动作,通过所述驱动轴对所述送风机罩执行关闭动作直至所述送风机罩与所述抵接面抵接。
进而,在本发明的冰箱中,所述控制装置,作为所述初始动作,与使所述送风机罩跨整个可动范围移动的情况同样,使所述驱动轴动作。
进而,在本发明的冰箱中,所述驱动轴是在所述送风机罩的螺丝孔内贯通且通过步进电机进行旋转的圆柱状的构件。在所述送风机罩与所述驱动轴之间形成有螺丝机构。所述控制装置在所述初始动作中,利用所述步进电机的驱动力使所述驱动轴旋转,从而通过所述螺丝机构使所述送风机罩移动至与所述抵接面抵接。
进而,在本发明的冰箱中,所述抵接面是支撑所述驱动轴的支撑基体的主面。
发明效果
本发明的冰箱具备:冷冻循环的冷却器,其将经由供给风路而提供给贮藏室的空气进行冷却;冷却室,其配设有所述冷却器,且形成有与所述贮藏室相连的送风口;送风机,其将从所述送风口供给的所述空气向所述贮藏室送出;遮蔽装置,其至少部分地封堵所述送风口;以及控制装置,其对所述冷冻循环、所述送风机以及所述遮蔽装置的动作进行控制。所述遮蔽装置具有:送风机罩,其从所述冷却室的外侧覆盖所述送风机;驱动轴,其控制所述送风机罩的开闭动作;以及抵接面,其与关闭状态的所述送风机罩的端部进行面抵接。所述控制装置,作为初始动作,通过所述驱动轴对所述送风机罩执行关闭动作直至所述送风机罩与所述抵接面抵接。因此,通过对送风机罩执行关闭动作直至与抵接面抵接,以此作为电源接通后的初始动作,从
而能以该抵接位置作为初始位置来准确地控制送风机罩的开闭动作。进而,由于控制罩与抵接面稳定地面接触,因此即使在控制罩与抵接面接触后驱动轴继续关闭动作,也能抑制由此产生较大噪音的情况。
进而,在本发明的冰箱中,所述控制装置,作为所述初始动作,与使所述送风机罩跨整个可动范围移动的情况同样,使所述驱动轴动作。因此,即使送风机罩存在于任意部位,也能使送风机罩与抵接面可靠地抵接。进而,即使在抵接后因驱动轴持续动作而产生动作振动,由于送风机罩与抵接面面接触,因此也抑制了伴随该动作振动而产生较大噪声的情况。
进而,在本发明的冰箱中,所述驱动轴是在所述送风机罩的螺丝孔内贯通且通过步进电机进行旋转的圆柱状的构件。在所述送风机罩与所述驱动轴之间形成有螺丝机构。所述控制装置在所述初始动作中,利用所述步进电机的驱动力使所述驱动轴旋转,从而通过所述螺丝机构使所述送风机罩移动至与所述抵接面抵接。因此,通过使用能进行微细的角度调整的步进电机来使驱动轴旋转,能准确地进行送风机罩的位置控制。进而,步进电机持续旋转直至送风机罩与抵接面抵接,从而能可靠地规定作为送风机罩的动作的基准的基准位置。
进而,在本发明的冰箱中,所述抵接面是支撑所述驱动轴的支撑基体的主面。因此,通过使送风机罩与支撑驱动轴的支撑基体抵接来检测初始位置,从而能准确地检测初始位置。
图1是表示本发明的实施方式所涉及的冰箱的外观的主视图。
图2是表示本发明的实施方式所涉及的冰箱的内部构成的侧方截面图。
图3是表示本发明的实施方式所涉及的冰箱的冷却室附近的构造的侧方截面图。
图4是表示本发明的实施方式所涉及的冰箱采用的遮蔽装置的分解立体图。
图5是表示本发明的实施方式所涉及的冰箱采用的遮蔽装置的图,(A)是表示非关闭状态的遮蔽装置的立体图,(B)是表示非关闭状态的遮蔽装置的截面图,(C)是表示关闭状态的遮蔽装置的立体图,(D)是表示关闭状态的遮蔽装置的截面图。
图6是表示本发明的实施方式所涉及的冰箱的连接构成的框图。
图7是整体表示本发明的实施方式所涉及的冰箱的冷却运行的流程图。
图8是表示本发明的实施方式所涉及的冰箱的初始动作的流程图。
图9是详细表示本发明的实施方式所涉及的冰箱的冷却运行的流程图。
图10是表示背景技术所涉及的冰箱的侧方截面图。
图11是表示背景技术所涉及的冰箱采用的送风机罩的立体图。
以下,基于附图来详细说明本发明的实施方式所涉及的冰箱1。在以下的说明中,对同一构件原则上标注同一标号,省略重复的说明。进而在以下的说明中适当使用上下前后左右的各方向,所谓左右,表示从前方观察冰箱1的情况下的左右。
图1是表示本形态的冰箱1的概略构造的主视外观图。如图1所示,冰箱1具备作为主体的隔热箱体2,
在该隔热箱体2的内部形成有贮藏食品等的贮藏室。作为该贮藏室,最上段是冷藏室3,其下段左侧是制冰室4,右侧是上段冷冻室5,更下段是下段冷冻室6,然后最下段是果蔬室7。另外,制冰室4、上段冷冻室5以及下段冷冻室6都是冷冻温度域的贮藏室,以下的说明也有将它们统称为冷冻室4A的情况。
隔热箱体2的前表面开口,在与前述各贮藏室对应的前述开口,以开闭自由的方式分别设置有隔热门8~12。隔热门8a、8b将冷藏室3的前表面分割封堵,隔热门8a的左上下部以及隔热门8b的右上下部以旋转自由的方式被隔热箱体2支撑。另外,隔热门9~12分别与收纳容器一体组合,以向冰箱1的前方拉出自由的方式被隔热箱体2支撑。
图2是表示冰箱1的概略构造的侧方截面图。如图2所示,冰箱1的主体即隔热箱体2包括:前表面开口的钢板制的外箱2a、以及在该外箱2a内具有间隙地配设且前表面开口的合成树脂制的内箱2b。在外箱2a与内箱2b的间隙填充发泡有发泡聚氨酯制的隔热件2c。另外,各隔热门8~12也采用了与隔热箱体2同样的隔热构造。
冷藏室3与位于其下段的冷冻室4A之间被隔热间隔壁28分隔。冷冻室4A的内部的制冰室4与上段冷冻室5之间被在此未图示的间隔壁分隔。另外,制冰室4以及上段冷冻室5与设于其下段的下段冷冻室6之间,经冷却的空气即冷气流通自由地连通。并且冷冻室4A与果蔬室7之间被隔热间隔壁29区分开。
在冷藏室3的背面形成有冷藏室供给风路14,其被合成树脂制的间隔体45区划,作为向冷藏室3供给冷气的供给风路。在冷藏室供给风路14上形成有使冷气流向冷藏室3的吹出口17。另外,在冷藏室供给风路14上设置有冷藏室风挡25。冷藏室风挡25是被电机等驱动的开闭自由的风挡,用于控制向冷藏室3供给的冷气的流量来将冷藏室3的内部的温度维持为适当水平。
在冷冻室4A的里侧形成有使经冷却器32冷却后的冷气流向冷冻室4A的冷冻室供给风路15。在冷冻室供给风路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循环的空气的蒸发器即冷却器32。
冷却器32经由冷媒配管与压缩机31、未图示的散热器、未图示的膨胀单元即毛细管连接,构成蒸气压缩式的冷冻循环回路。
图3是表示冰箱1的冷却室13附近的构造的侧方截面图。冷却室13在隔热箱体2的内部设置于冷冻室供给风路15的里侧。冷却室13与冷冻室4A之间被合成树脂制的间隔体46分隔。
形成于冷却室13的前方的冷冻室供给风路15是形成于分隔体46与组装在其前方的合成树脂制的前表面罩47之间的空间,成为流过经冷却器32冷却后的冷气的风路。在前表面罩47形成有向冷冻室4A吹出冷气的开口即吹出口18。
在下段冷冻室6的下部背面,形成有使空气从冷冻室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与返回口23相连,将来自各贮藏室的回归冷气向冷却室13的内部吸入。
另外,在冷却器32的下方设置有除霜加热器33,作为将附着于冷却器32的霜融化去除的除霜单元。除霜加热器33是电阻加热式的加热器。
在间隔体46的上部形成与各贮藏室相连的开口即送风口13a。送风口13a是使经冷却器32冷却后的冷气流动的开口,使冷却室13与冷藏室供给风路14及冷冻室供给风路15连通。在送风口13a,配设有朝向冷冻室4A等送出冷气的送风机35。
送风机35是轴流送风机,具备旋转式的风扇37和形成有大致圆筒形状的开口即风洞36a的罩壳36。罩壳36安装于冷却室13的送风口13a。
另外,在冷却室13的送风口13a的外侧,设置有遮蔽装置50,该遮蔽装置50具备用于封堵送风口13a的送风机罩51。遮蔽装置50中,其支撑基体53例如以紧贴送风机35的罩壳36的方式被安装。另外,配置有使送风机罩51的上端开口与冷藏室供给风路14连通的引导风道59。用于开闭送风机罩51的进退动作在此由虚线所示的驱动轴61控制,相关事项将后述。
送风机外罩51的与冷却室13对置的面成形为凹形状。由此,送风机罩51不会与比外壳36更向喷出侧突出的风扇37接触,而在风洞36a的外侧与支撑基体53抵接,能封堵送风口13a。另外,遮蔽装置50被遮蔽装置罩49从前方覆盖。在遮蔽装置50与遮蔽装置外罩49之间形成有容许送风机罩51向前后方向移动的间隙。该间隙与冷冻室供给风路15连通。
参考图4来说明上述冰箱1所采用的遮蔽装置50的构成。图4是在前后方向上分解表示构成遮蔽装置50的各构件的立体图。
遮蔽装置50具有:覆盖上述风扇37的送风机罩51、将送风机罩51安装于冰箱1主体的支撑基体53、以及将送风机罩51与冰箱主体侧的风路连接的引导风道59。遮蔽装置50的主要功能在于,通过使上述风扇37适当成为非关闭状态或者关闭状态,来将因风扇37旋转而送出的冷风提供到期望的贮藏室。另外,通过使遮蔽装置50成为关闭状态,来抑制冷却器32的除霜行程中产生的暖气流入冷冻室4A等。在此,所谓暖气,是经除霜加热器33加热后的空气。
送风机罩51是将合成树脂材料概略地注塑成形为盖形状而得到的,具有主视下呈大致四角形状的主面部69以及从主面部69的周边缘部向后方侧延伸的侧面部70。将主面部69的中央附近圆形地贯通而形成有螺丝孔63,使螺丝孔63的内侧侧面螺旋状凹陷而形成有螺丝槽。使送风机罩51上侧的侧面部70开口而形成有开口部64。开口部64在送风机罩51封盖送风机35的状况下与上述引导风道59的开口部65连结。在送风机罩51的左下角部附近以及右上角部附近形成有用于使后述的导向销54插通的支撑孔62。
送风机罩51的作用如上所述,在于将配置于冷却室13的送风口13a的风扇37实质封盖。另外,由于在送风机罩51的上部形成有开口部64,因此在送风机罩51封盖风扇37的状况下,也能将被风扇37送出的冷气经由开口部64而供给至冷藏室3侧。
驱动轴61呈大致圆柱形状,设置有使其侧面的一部分螺旋状连续凸起的未图示的螺纹。在此,在驱动轴61的侧面形成的螺纹以及在送风机罩51的螺丝孔63的侧面形成的螺丝槽在使用状况下相螺合。在驱动轴61的内部内置有未图示的步进电机,通过该电机的驱动力,驱动轴61旋转给定角度。若驱动轴61从例如前方观察顺时针旋转,则送风机罩51从支撑基体53离开,在送风机罩51与支撑基体53之间形成间隙而成为非关闭状态。由此,经未图示的风扇37送出的冷气经由该间隙而被供给至冷冻室4A。另一方面,若驱动轴61例如从前方观察逆时针旋转,则送风机罩51向支撑基体53侧移动,送风机罩51的侧面部70紧贴支撑基体53的框部71,不形成上述间隙而成为关闭状态。由此,能将经未图示的风扇37送出的冷气不供给至冷冻室4A,而是经由上述开口部64以及引导风道59供给至冷藏室3。
支撑基体53主要具有:俯视下呈四角形的框形状的框部71;支撑配置于中央部分的驱动轴61的轴支撑部72;将轴支撑部72与框部71的角部连结的支撑架60;以及在框部71的左下角部以及右上角部竖立设置
的导向销54。框部71是机械性支撑支撑基体53整体的框状的板构件,在其四角附近设置有多个孔部73。孔部73在厚度方向上贯通支撑基体53。通过在孔部73内贯通的螺丝等固定单元,包含框部71的遮蔽装置50被固定至间隔体46。
导向销54是竖立设置于与送风机罩51的支撑孔62对应的部位处的圆柱状的构件。各个导向销54通过被插入支撑孔62内进行滑动,从而沿着送风机罩51的前后方向的移动被稳定地导向。
引导风道59具有如下功能:在送风机罩51封堵图3所示的送风口13a的关闭状态时,将送风机罩51的开口部64与冷藏室供给风路14连通。引导风道59由注塑成形的合成树脂构成,包括面向前方的主面部40以及面向左右两方向的侧面部41。在引导风道59的下端形成的开口部65配置于与关闭状态的送风机罩51的开口部64一致的部位。向下方开口的引导风道59的开口部65与向上方开口的送风机罩51的开口部64成为大致相同的形状以及大小。在此未图示的引导风道59的后方侧的开口与图3所示的入口部14a接续。
如上所述,在本形态下,通过在送风机罩51的螺丝孔63的内侧面形成的螺丝槽以及在驱动轴61的外侧面形成的螺纹,形成了使送风机罩51在前后方向上进退的螺丝机构。在此,该螺丝机构还能通过在送风机罩51的内侧面形成的螺纹以及在驱动轴61的外侧面形成的螺丝槽来构成。
参照图5来进一步详述上述遮蔽装置50的构成。图5(A)是表示非关闭状态的遮蔽装置50的立体图,图5(B)是图5(A)的α-α截面的截面图,图5(C)是表示关闭状态的遮蔽装置50的立体图,图5(D)是图5(C)的α-α截面的截面图。
参照图5(A)以及图5(B),在上述非关闭状态下,通过驱动轴61的驱动力,送风机罩51向前方移动。因而,送风机罩51的侧面部70的后端与支撑基体53分离,在送风机罩51与支撑基体53之间形成有间隙。在该状态下,在送风机罩51的上部形成的开口部64未与在引导风道59的下部形成的开口部65连通。若在该状态下使图3所示的风扇37旋转而送风,则送出的冷气经由上述间隙而供给至冷冻室4A。在该图所示的非关闭状态下,驱动轴61配置于送风机罩51的内部,即配置于送风机罩51的后方侧的冷却室13侧。另外,在该状态下,导向销54配置于送风机罩51的后方侧的冷却室13侧。
在将送风机罩51从非关闭状态向关闭状态转移时,使驱动轴61例如从前方观察逆时针旋转。由此,送风机罩51通过上述螺丝机构而向后方移动,送风机罩51的侧面部70的后方端部与作为抵接面的支撑基体53的前表面抵接。支撑基体53的导向销54在送风机罩51的支撑孔62内插通,在送风机罩51开闭时,导向销54在支撑孔62的内部滑动。另外,导向销54以及支撑孔62配置于送风机罩51的对置的角部附近。由此,通过使导向销54在支撑孔62的内部滑动,来稳定执行送风机罩51的开闭动作。
参照图5(C)以及图5(D),若通过使驱动轴61旋转来使送风机罩51向支撑基体53侧移动,则送风机罩51的侧面部70的后端与支撑基体53的前表面面抵接。因此,送风机罩51与支撑基体53的间隙实质消失,不再从两者之间泄漏冷气或暖气。另外,如上所述,由于送风机罩51的上端部分与引导风道59的下端部分重叠,因此还抑制了冷气从送风机罩51与引导风道59之间向外部泄漏。因此,参考图3,由于送风口13a被送风机罩51封堵,因此风扇37所送出的冷气不供给至冷冻室4A。风扇37所送出的冷气经由送风机罩51以及引导风道59而送至冷藏室3。
在该图所示的关闭状态下,驱动轴61配置于送风机罩51的外部,即配置于送风机罩51的前方的冷冻室4A侧。另外,在该关闭状态下,导向销54配置于送风机罩51的前方侧即冷却室13侧。如此,即使冷却室
13进行除霜运行等而成为高温状态,驱动轴61以及导向销54也配置于低温且稳定的冷冻室4A侧。由此,抑制了水分在驱动轴61以及导向销54附着而冻结。
参照图6来说明具有上述构成的冰箱1的连接构成。控制装置80例如由CPU构成,接受来自以下说明的各种传感器的输入,进行给定的运算处理,并基于其处理结果来控制压缩机31等各种构成设备的动作。另外,控制装置80可以具备对用于进行冷却运行的各种常数和程序进行存储的半导体存储装置。
温度传感器81以及计时器82与控制装置80的输入侧端子连接。
温度传感器81安装于上述冷藏室3、冷冻室4A、果蔬室7以及冷却室13当中的一处或多处,计测它们的室内温度。计时器82计测使冷藏室3、冷冻室4A、果蔬室7以及冷却室13冷却的冷却时间或除霜加热器33的运行时间等。在此,计时器82作为控制装置80所具备的功能的一部分而实现。
压缩机31、送风机35、遮蔽装置50、冷藏室风挡25以及除霜加热器33与控制装置80的输出侧端子连接。压缩机31等的各种设备根据从控制装置80输出的输出信号来动作。
接下来,基于图7至图9记载的流程图,并参照上述图1至图6记载的各图,来说明冰箱1的动作。图7是将冰箱1的冷藏运行整体表示的流程图,图8是表示冰箱1的初始动作的流程图,图9是表示压缩机31停止后的冰箱1的运行动作的流程图。
参照图7,若将冰箱1与商用电源连接来接通电源,则在步骤S10中,控制装置80执行遮蔽装置初始动作。该步骤S10确定图4所示的遮蔽装置50的送风机罩51的初始位置,其细节参照图8进行详述。另外,控制装置80从停电等恢复时也执行遮蔽装置初始动作。
若初始动作结束,则在步骤S20中,控制装置80判断冷冻循环的压缩机31是否已停止运行。若压缩机31停止,即步骤S20为“是”的情况下,则控制装置80在步骤S30中执行压缩机31停止的情况下的控制。步骤S30的细节将后述。另一方面,在压缩机31动作的情况下,即步骤S20中为“否”的情况下,控制装置80执行用于将各贮藏室冷却至给定的温度范围的通常冷却控制。具体而言,控制装置80在步骤S60中适当进行遮蔽装置50的开闭动作,在步骤S61中适当开闭冷藏室风挡25等,使图2所示的冷藏室3、冷冻室4A以及果蔬室7保持为给定的温度范围。
以下说明在使遮蔽装置50以及冷藏室风挡25等适当开闭的同时冷却各贮藏室的通常冷却控制。
首先,说明仅对冷藏室3进行冷却的运行。如图2所示,根据控制装置80的指示,使压缩机31运行,打开冷藏室风挡25,使送风机35运行。在此情况下,如图5(C)所示,遮蔽装置50成为关闭状态,因此能抑制冷气从送风机罩51与引导风道59之间漏出,且经由冷藏室供给风路14仅向冷藏室3供给冷气,从而能有效地冷却冷藏室3。
参照图3,经冷却器32冷却后的空气依次经过冷却室13的送风口13a、送风机35、送风机罩51的内部空间、引导风道59、冷藏室风挡25、冷藏室供给风路14以及吹出口17而向冷藏室3供给。由此,能以适当的温度对在冷藏室3的内部贮藏的食品等进行冷却保存。
然后,向冷藏室3的内部供给的循环冷气在此经由未图示的返回口以及回归风路向冷却室13的内部返回。为此,再次被冷却器32冷却。
接下来,说明仅对冷冻室4A进行冷却的运行。如图3所示,根据控制装置80的指示,使压缩机31运行,关闭冷藏室风挡25,使送风机35运行,打开送风机罩51。此时,送风机罩51如图5(A)所示,成为从支
撑基体53分离的非关闭状态。由此,经冷却器32冷却后的空气由在冷却室13的送风口13a配设的送风机35送出,经由送风机罩51与支撑基体53的间隙,依次经过冷冻室供给风路15以及吹出口18,仅向冷冻室4A供给。
其结果是,能以适当的温度对在冷冻室4A的内部贮藏的食品等进行冷却保存。然后,冷冻室4A内部的空气经过在下段冷冻室6的深处形成的返回口23,经由冷却室13的返回口13b向冷却室13的内部流动。
接下来,参照图2来说明冷气向果蔬室7的供给。经送风机35送出的空气的一部分通过打开未图示的果蔬室风挡而向未图示的果蔬室供给风路流动,并向果蔬室7流出。由此,能对果蔬室7内进行冷却。然后,在果蔬室7内循环的冷气从返回口24依次经过果蔬室回归风路21以及返回口13b而向冷却室13返回。
接下来,参照图3来说明对冷藏室3以及冷冻室4A两者进行冷却的动作。
在此情况下,将送风机罩51与支撑基体53分开的长度设得比仅对冷冻室4A进行冷却的情况下更短。例如,使送风机罩51与支撑基体53分开的长度成为在仅对冷冻室4A进行冷却的情况下的一半程度。另外,将冷藏室风挡25设为打开状态。若在此状态下通过风扇37来送出经冷却器32冷却后的冷气,则送出的冷气的一部分从送风机罩51与支撑基体53的间隙向冷冻室4A供给,冷气的另一部分经由引导风道59、冷藏室风挡25、冷藏室供给风路14而向冷藏室3供给。因此,能同时冷却冷藏室3以及冷冻室4A两者。
在上述通常冷却控制下,图5(A)等所示的驱动轴61存在于经冷却器32冷却后的冷气被供给的氛围气体下,因此成为水分难以在驱动轴61的周围附着的环境。由此,在控制装置80执行通常的冷却控制的期间,形成于驱动轴61与送风机罩51之间的螺丝机构发生冻结的可能性小。
另外,控制装置80根据冰箱1的运行状况,在步骤S40中进行除霜运行。具体而言,控制装置80は,若通过使冷冻循环的压缩机31运行而冷却各贮藏室的时间达到一定以上,则判断为冷却器32的着霜已发展为一定以上,进行步骤S40的除霜运行。进而,控制装置80在步骤S40的除霜运行结束后,在步骤S50中执行作为通常的冷却控制的事先运行的恢复运行。这些控制将后述。
参照图8,说明在将冰箱1与商用电源连接后等为了确定送风机罩51的位置而由控制装置80立刻执行的遮蔽装置50的初始动作。
首先,在步骤S11中,接通冰箱1的电源。在此,电源的接通既可以是将冰箱1的电源插头与商用电源连接,也可以是电源从停电状态恢复。进而,在冰箱1的运行状况下,与控制装置80是否判断为打开送风机罩51将冷气向冷冻室4A送出的情况无关,当冷冻室4A的室内温度不下降的异常运行实际发生时,为了使送风机罩51的位置初始化,可以进行以下的动作。
接下来,在步骤S12中,为了确定送风机罩51的位置,使驱动轴61旋转,从而使送风机罩51移动。具体而言,为了执行送风机罩51的开闭控制,需要确定送风机罩51的当前的位置,但本形态的冰箱1并不具备用于计测送风机罩51的位置的位置传感器。为此,在本形态下,在冰箱1的电源接通时等,通过使送风机罩51移动至可动范围的端部,来确定了送风机罩51的初始位置。
此时,如图5(B)所示,还考虑使送风机罩51移动至前端。然而,在驱动轴61的前端,送风机罩51仅被驱动轴61以及导向销54点支撑。因此,若在到达驱动轴61的前端后进而通过步进电机使驱动轴61旋转,则因步进电机产生的振动,有可能产生大的噪音或振动。
为此,在本形态下,作为初始动作,通过步进电机使驱动轴61旋转以使送风机罩51移动至可动范围的
后端。此时,向驱动驱动轴61的步进电机施加的脉冲的个数被设为了使送风机罩51从可动范围的前端移动至后端所需的量。例如,使送风机罩51在可动范围的全域即从前端移动至后端所需的步进电机的脉冲的步进数为100,使送风机罩51位于可动范围的中央部附近。在此情况下,无论送风机罩51位于哪个位置,为了使送风机罩51移动至可动范围的后端,控制装置80都向步进电机施加脉冲以使步进数成为100。因此,若通过使用步进电机使驱动轴61旋转来使送风机罩51向后方移动,则步进电机以约50步进份旋转,从而在步骤S13中,送风机罩51的侧面部70的后侧边与支撑基体53的前侧主面面抵接。
在送风机罩51与支撑基体53抵接后,在本形态下,向内置于驱动轴61的步进电机施加剩余的约50步进份的脉冲。即,在送风机罩51与支撑基体53抵接后,在步骤S14为“否”的期间,从持续施加脉冲的步进电机产生振动。在本形态下,通过使送风机罩51的侧面部70的后侧边与支撑基体53的前侧主面面抵接,送风机罩51较牢固地被固定,因此即使从步进电机产生振动,也不会发生大的噪音或振动。若步进电机的步进数达到上述100步进,即步骤S14成为“是”,则控制装置80使步进电机的旋转动作结束。通过本步骤,控制装置80能识别出送风机罩51的位置处于可动范围的后端,其后,向进行通常的冷却运行的上述步骤S20转移。
如上所述,使用步进电机使驱动轴61旋转,使送风机罩51后退至与支撑基体53面接触,从而即便不使用传感器,也能确定送风机罩51的初始位置。进而,由于送风机罩51的侧面部70的后方部分与支撑基体53的前方主面稳定地面接触,因此即使在送风机罩51接触后向步进电机持续施加脉冲,也抑制了大的振动或噪音发生。
参照图9,接下来,详述上述压缩机停止控制S30、除霜运行S40以及恢复运行S50。
在步骤S31中,控制装置80确认遮蔽装置50是否处于已打开的非关闭状态。在遮蔽装置50处于图5(A)所示的非关闭状态的情况下,即步骤S31中为“是”的情况下,控制装置80在步骤S32中使驱动轴61旋转从而使送风机罩51向后方移动,使遮蔽装置50成为关闭状态。控制装置80使驱动轴61旋转,直至送风机罩51的侧面部70的后端与支撑基体53的前表面接触为止。另一方面,控制装置80在遮蔽装置50处于关闭状态的情况下,即步骤S31中为“否”的情况下,维持该状态,并转移至步骤S33。
如上所述,通过驱动驱动轴61,遮蔽装置50成为图5(C)所示的关闭状态。在该关闭状态下,遮蔽装置50的驱动轴61未配置于送风机罩51的内部空间,并向作为送风机罩51的外侧的前方突出。即,若在此状态下参照图3的截面图,则上述驱动轴61配置于比送风机罩51更靠冷冻室4A侧。
在此,在使压缩机31停止的状况下,冷却器32主导的热交换将不被执行,因此冷却室13的内部存在室内温度上升且发生大的温度变化的风险。尤其是在使用除霜加热器33对冷却器32进行除霜的除霜运行时,冷却室13成为高温,因此该风险变得明显。若在将遮蔽装置50设为打开状态的情况下,遮蔽装置50的驱动轴61配置于送风机罩51的内侧。送风机罩51的内部空间经由送风口13a与冷却室13连通。因此,驱动轴61与高温的空气或者来自温度变化大的冷却室13的空气接触,从而水分在驱动轴61的周围附着。其后,该水分冻结,从而认为难以使形成于驱动轴61与送风机罩51之间的螺丝机构动作。
在本形态下,在预测冷却室13的室内温度会上升的压缩机31的停止时,控制装置80使遮蔽装置50成为关闭状态,使驱动轴61退避至送风机罩51的外侧即冷冻室4A侧。因此,如上所述,在使压缩机31停止的情况下,即便在进行除霜行程的期间,也将驱动轴61配置于室内温度为低温且稳定的冷冻室4A侧。因此,
驱动轴61不会暴露在高温的氛围气体中,不发生大的温度变化,因此将抑制水分在驱动轴61的周围附着的状况。由此,能防止驱动送风机罩51的螺丝机构发生冻结而变得不能动的状况。
进而,通过在步骤S32中将遮蔽装置50设为关闭状态,从而图5(C)所示的导向销54从送风机罩51向外侧突出。由此,导向销54配置于低温状态被稳定维持的冷冻室4A侧,将抑制水分在导向销54的表面附着的状况。其结果是,能防止因该水分冻结而导向销54与支撑孔62难以滑动的状况。
在步骤S33中,控制装置80确认冷藏室风挡25是否已打开,在冷藏室风挡25已打开的情况下,即步骤S33中为“是”的情况下,在步骤S34中关闭冷藏室风挡25。另一方面,在冷藏室风挡25已关闭的情况下,即在步骤S33中为“否”的情况下,控制装置80维持该状态并转移至步骤S41。
冷藏室风挡25在冷藏室供给风路14的途中插入设置,若在压缩机31停止的期间使冷藏室风挡25成为打开状态,则空气会经由冷藏室供给风路14而不必要地循环。如此,冷藏室3的冷气中所包含的水分会从冷藏室3经由回归风路而到达冷却室13,从而存在驱动轴61因该水分而冻结的风险。进而,空气经由冷藏室供给风路14而自然对流,从而存在各贮藏室的室内温度上升的风险。在本形态下,控制装置80将冷藏室风挡25设为了关闭状态。由此,水分不会从冷藏室3不必要地供给至冷却室13,也能抑制水分在驱动轴61的周围附着的状况。另外,还能抑制经由冷藏室供给风路14的不需要的冷气的对流,抑制室内温度上升。
在此,在从冷却室13向果蔬室7送出冷气的未图示的果蔬室供给风路上插入设置果蔬室风挡的情况下,控制装置80与上述同样,使果蔬室风挡也同时关闭。具体而言,控制装置80在步骤S33中判断果蔬室风挡是否处于打开状态,若果蔬室风挡处于打开状态,则在步骤S34中关闭果蔬室风挡。如此,能防止包含从果蔬等被贮藏物发出的水分的冷气经由果蔬室回归风路21而进入冷却室13的状况。因此,能使抑制水分在驱动轴61的表面附着的效果显著。
若继续执行冷却运行,则霜会附着于冷却器32的空气侧传热面,妨碍传热,从而封堵空气流路。为此,为了去除附着于冷却器32的霜,在步骤S41中进行除霜行程。
具体而言,在冷冻循环的压缩机31以及送风机35停止的状态下,根据控制装置80的指示,对除霜加热器33通电。如此,因除霜加热器33发热而使冷却室13变暖,使附着于冷却器32的霜融解。在本步骤中,如上所述,遮蔽装置50成为关闭状态,驱动轴61退避至维持较低温状态的冷冻室4A侧。因此,暖气不与经除霜加热器33加热的驱动轴61接触,故大的温度变化不会作用于驱动轴61,能抑制水分在驱动轴61的表面附着。进而,参照图3,在除霜行程中,遮蔽装置50成为关闭状态,进而,冷藏室风挡25被关闭,因此防止了由除霜加热器33加热后的冷却室13内的暖气向冷藏室供给风路14以及冷冻室供给风路15流出的状况。
接下来,说明利用附着于冷却器32的霜的潜热来进行冷藏室3的冷却的除霜冷却运行。在进行除霜冷却运行的情况下,根据控制装置80的指示来停止压缩机31的运行,如图5(C)所示那样,使遮蔽装置50成为关闭状态。然后,根据控制装置的指示,打开冷藏室风挡25,使送风机35运行。由此,在冷藏室3与冷却室13之间使空气循环,能通过该循环空气融化附着于冷却器32的霜。即,不进行除霜加热器33的加热就能进行除霜。同时,不使压缩机31运行就能利用霜的融解热来进行冷藏室3的冷却。进而,遮蔽装置50成为关闭状态,驱动轴61配置于送风机罩51的外侧,因此抑制了包含从冷却室13送至冷藏室3的冷气的水分附着于驱动轴61的状况。
在步骤S42中,判断冷却器32的去霜动作是否已结束。在此,去霜的完成是控制装置80根据表示冷却室13已达给定温度的温度传感器81的输出、或者表示进行除霜运行的时间已达给定时间的计时器82的输出来判断的。在去霜动作已结束的情况下,即步骤S42中为“是”的情况下,转移至步骤S51以从去霜动作执行恢复运行。另一方面,控制装置80探测到该结束之前,即步骤S42中为“否”的期间,连续执行去霜动作。
在步骤S51中,参照图3,在上述除霜运行结束后,为了重启通常的冷却运行,控制装置80运转冷冻循环的压缩机31。如此,将经除霜行程加热后的冷却室13的内部空气通过冷冻循环的冷却器32进行冷却。在该步骤中,由于冷却室13的内部空气未被充分冷却,因此为了抑制高温状态的内部空气从冷却室13向贮藏室漏出,控制装置80使遮蔽装置50以及冷藏室风挡25成为关闭状态来使送风机35不旋转。在本步骤中也将驱动轴61配置于送风机罩51的外侧,因此驱动轴61不与未充分冷却的冷却室13内的空气接触,抑制了水分在驱动轴61的周围附着。
在步骤S52中,确认冷却室13是否被充分冷却。该确认是控制装置80根据表示冷却室13的温度已下降至一定温度的温度传感器81的输出、或者表示通过冷却器32冷却冷却室13的时间已达到一定时间的计时器82的输出来执行的。
冷却室13充分冷却之前,即步骤S52为“否”的情况下,控制装置80执行通过冷却器32来冷却冷却室13的冷却运行。另一方面,若冷却室13已被充分冷却,即步骤S52中为“是”的情况下,则控制装置80为了进行通常的冷却运行,转移至步骤S20。此后,如图7所示,在压缩机31运行的情况下,为了冷却各贮藏室,在步骤S60以及步骤S61中,控制装置80适当进行遮蔽装置50以及冷藏室风挡25的开闭动作。
以上是与本形态的冰箱1的动作有关的说明。
本发明不限于上述实施方式,其他在不脱离本发明的主旨的范围内的各种变更实施也能实现。
Claims (4)
- 一种冰箱,其特征在于,具备:冷冻循环的冷却器,其将经由供给风路而提供给贮藏室的空气进行冷却;冷却室,其配设有所述冷却器,且形成有与所述贮藏室相连的送风口;送风机,其将从所述送风口供给的所述空气向所述贮藏室送出;遮蔽装置,其至少部分地封堵所述送风口;以及控制装置,其对所述冷冻循环、所述送风机以及所述遮蔽装置的动作进行控制,所述遮蔽装置具有:送风机罩,其从所述冷却室的外侧覆盖所述送风机;驱动轴,其控制所述送风机罩的开闭动作;以及抵接面,其与关闭状态的所述送风机罩的端部进行面抵接,所述控制装置,作为初始动作,通过所述驱动轴对所述送风机罩执行关闭动作直至所述送风机罩与所述抵接面抵接。
- 根据权利要求1所述的冰箱,其特征在于,所述控制装置,作为所述初始动作,与使所述送风机罩跨整个可动范围移动的情况同样,使所述驱动轴动作。
- 根据权利要求1所述的冰箱,其特征在于,所述驱动轴是在所述送风机罩的螺丝孔内贯通且通过步进电机进行旋转的圆柱状的构件,在所述送风机罩与所述驱动轴之间形成有螺丝机构,所述控制装置在所述初始动作中,利用所述步进电机的驱动力使所述驱动轴旋转,从而通过所述螺丝机构使所述送风机罩移动至与所述抵接面抵接。
- 根据权利要求1所述的冰箱,其特征在于,所述抵接面是支撑所述驱动轴的支撑基体的主面。
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US11778964B2 (en) | 2019-02-18 | 2023-10-10 | Lg Electronics Inc. | Apparatus for cultivating plants |
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