JP3594544B2 - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problems that conventionally a vegetable container has to be constituted small because of shallow depth thereof in a refrigerator having a fresh food storage compartment, a vegetable compartment and a frozen food storage compartment arranged in this order from above, having a cold air circulation fan and a damping part provided in a rear face part of the fresh food storage compartment, and having a cooler vertically arranged from the rear face part of the frozen food storage compartment to the rear face part of the vegetable compartment, and that the structure becomes complex, because another blower for air curtain and an air duct are required in case the air curtain is formed in the front face opening of the fresh food storage compartment. SOLUTION: A fresh food storage compartment cooler is provided in a cooler chamber in the rear face upper part of the fresh food storage compartment, and a cold air circulation blower for a fresh food storage compartment is provided above the same. A cold air distribution duct for distributing cold air cooled by the cooler to the fresh food storage compartment comprises an upper face duct, provided on an upper face part of the fresh food storage compartment for blowing the cold air downward to the front face opening of the fresh food storage compartment and rear face ducts, provided vertically on left and right sides of the cooler chamber for supplying the cold air from the rear face of the fresh food storage compartment to the fresh food storage compartment. A return duct to the cooler chamber is disposed between the left and right rear face ducts below the cooler chamber.

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention has a refrigerator compartment and a freezer compartment, and has a refrigerator cooler and a cool air circulation blower dedicated to the refrigerator compartment and the freezer compartment respectively; a refrigerator cooler and a cold air circulation for the freezer compartment. The present invention relates to a refrigerator provided with a blower to cool the refrigerator compartment and the freezer compartment.
[0002]
[Prior art]
JP-A-8-247606 discloses a refrigerator in which the refrigerator is divided into a refrigerator compartment 11, a vegetable compartment 10, and a freezer compartment 9 from above. In this embodiment, a cool air circulation fan 20 and a damper part 32 are provided on the back of the vegetable compartment 10, and the cooler 8 is vertically arranged from the back of the freezing compartment 9 to the back of the vegetable compartment 10. The cool air cooled by the cooler 8 is circulated to the freezing compartment 9, and the cool air supplied to the refrigerator compartment 11 through the damper component 32 circulates back to the cooler 8 via the vegetable compartment 10.
[0003]
In this case, the cool air circulation fan 20 and the cooler 8 are arranged as described above in order to easily incorporate the cool air circulation fan 20 and the cooler 8 from the front of the refrigerator. There is a problem that the depth of the vegetables becomes shallow and the vegetable container becomes smaller.
[0004]
Further, as a prior art, a vegetable room is provided between the refrigerator compartment and the freezer compartment, and between the refrigerator compartment and the freezer compartment, and a dedicated refrigerator cooler and a cool air circulation blower for the refrigerator compartment, a refrigerator cooler and a freezer are provided. There is a refrigerator that cools the refrigerator compartment, the vegetable compartment, and the freezer compartment by providing a cool air circulation blower for the room, but also in this case, the cooler for the refrigerator compartment and the cool air circulation blower for the refrigerator compartment are provided behind the vegetable compartment. Therefore, there is a problem that the depth of the vegetable room becomes shallow and the vegetable container becomes smaller.
[0005]
Further, as a prior art, in order to form an air curtain at the front opening of the refrigerator compartment through an air duct which does not pass through the cooler when the door of the refrigerator compartment is opened, it is different from the blower for cooling air circulation of the refrigerator compartment. Although there are refrigerators provided with a blower, a special blower for an air curtain and its air duct are required, which is structurally complicated.
[0006]
[Problems to be solved by the invention]
In the above technique, the cooling air fan and the cooler can be easily incorporated from the front of the refrigerator, but there is a problem that the depth of the vegetable compartment becomes shallower and the vegetable container becomes smaller. In the former technique, the cool air cooled by a single cooler located at the back of the lower freezing compartment needs to be circulated through the duct to the upper portion of the refrigerating compartment located above, so that it is cooled and heavier. This is an inefficient circulation method that lifts the lost air upward. Further, in the case where an air curtain is formed at the front opening of the refrigerator compartment, a special blower for the air curtain and its air duct are required, and there is a problem that the structure becomes complicated.
[0007]
In view of the above, the present invention provides a refrigerator and a freezer circulating blower dedicated to a refrigerator and a freezer, respectively, and a cooler and a cooler circulating blower for a freezer. And a refrigerator system for cooling the refrigerator compartment and the freezer compartment. Further, when an air curtain is formed at the front opening of the refrigerating compartment, the technical means capable of improving the cooling effect from the front side of the refrigerating compartment is achieved by forming the cool air curtain.
[0008]
[Means for Solving the Problems]
The present invention includes a refrigerator compartment and a freezer compartment, and a refrigerator cooler and a cool air circulation blower for the refrigerator compartment and a refrigerator cooler and a cool air circulation blower for the refrigerator compartment, respectively. A refrigerator for cooling the refrigerator compartment and the freezer compartment, wherein the refrigerator cooler is disposed in a cooler compartment formed at an upper rear portion of the refrigerator compartment, and the cool air circulation blower for the refrigerator compartment is provided in the cooler compartment. A cold air distribution duct for distributing the cool air cooled by the refrigerator cooler to the refrigerator compartment to blow the cool air from the top to the bottom at the front opening of the refrigerator compartment, the upper surface of the refrigerator compartment. An upper surface duct formed in a section and a rear surface duct formed in a vertical direction on the left and right sides of the cooler room to supply cool air from the back surface of the cooler room to the cooler room, and return cool air to the cooler room. Duct is located between the left and right rear ducts The rear duct extends to the back of the vegetable compartment and has a cool air supply port for the vegetable compartment, and the cool air return duct extends to the back of the vegetable compartment and cools the cold of the vegetable compartment. It has a return part.
BookAs one specific means of the present invention, it has a refrigerator compartment and a freezer compartment, and a refrigerator cooler for the refrigerator compartment and a cool air circulation blower for the refrigerator compartment for the refrigerator compartment and the freezer compartment respectively, and a refrigerator cooler for the refrigerator compartment. A refrigerator for cooling the refrigerator compartment and the freezer compartment, wherein the cooler for the refrigerator compartment is disposed in a cooler compartment formed on the upper rear surface of the refrigerator compartment, and the cool air for the refrigerator compartment is provided. A circulating blower is disposed above the cooler room, and a cool air distribution duct that distributes the cool air cooled by the cooler cooler to the refrigerator room blows the cool air from the top to the front opening of the refrigerator room from the top to the bottom. An upper surface duct formed on the upper surface portion of the refrigerator compartment and a rear duct formed vertically on the left and right sides of the cooler room and supplying cool air from the back surface of the refrigerator room to the refrigerator room, Cool air return duct to cooler room is in front It was adopted arranged technical means below the cooler chamber located between the right and left rear ducts.
[0009]
Further, the present invention, as one specific means for solving the above problem, has a refrigerator room provided at an upper part and a freezer room provided at a lower part, and the exclusive use is provided for each of the refrigerator room and the freezer room. A refrigerator for cooling a refrigerator and a cool air circulating blower for a refrigerator, and a refrigerator for a freezing room and a cool air circulating blower for a freezer are provided, and a refrigerator for cooling the refrigerator and the freezing room is provided between the refrigerator and the freezing room. A refrigerator compartment is provided in the refrigerator compartment, the refrigerator cooler is disposed in a refrigerator compartment formed in the upper rear portion of the refrigerator compartment, the cold air circulation blower for the refrigerator compartment is disposed above the refrigerator compartment, the refrigerator compartment A cold air distribution duct for distributing cool air cooled by the cooler to the refrigerator compartment has an upper surface duct formed on an upper surface portion of the refrigerator compartment to blow cold air from the top to the front opening of the refrigerator compartment from the top and the bottom, and Vertically formed on the left and right sides of the cooler room A back duct for supplying cool air to the refrigerator compartment from the back of the refrigerator compartment, and a cool air return duct to the cooler compartment is located below the cooler compartment between the left and right rear ducts, The rear duct extends to the rear of the vegetable compartment and has a cool air supply port for the vegetable compartment, and the cool air return duct extends to the rear of the vegetable compartment and employs technical means having a cool air return portion of the vegetable compartment.
[0010]
Further, the present invention, as one specific means for solving the above problem, has a refrigerator room provided at an upper part and a freezer room provided at a lower part, and the exclusive use is provided for each of the refrigerator room and the freezer room. A refrigerator for cooling a refrigerator and a cool air circulating blower for a refrigerator, and a refrigerator for a freezing room and a cool air circulating blower for a freezer are provided, and a refrigerator for cooling the refrigerator and the freezing room is provided between the refrigerator and the freezing room. A vegetable compartment, a specific low-temperature compartment below the refrigerator compartment, a refrigerator cooler is disposed in a refrigerator compartment formed on the upper rear side of the refrigerator compartment, and the cool air circulation blower for the refrigerator compartment cools the cooling compartment. A cold air distribution duct that is disposed above the refrigerator compartment and that distributes the cool air cooled by the refrigerator cooler to the refrigerator compartment, to blow the cool air from the top to the bottom at the front opening of the refrigerator compartment; The upper surface duct formed on the upper surface portion of the A back duct that is formed vertically on the left and right sides of the refrigerating compartment and supplies cold air from the back of the refrigerating compartment to each of the shelves of the refrigerating compartment, wherein the cold air of the refrigerating compartment flows into the vegetable compartment. A passage is provided, a cool air return duct to the cooler room is located below the cooler room between the left and right rear ducts, and the rear duct extends to the back of the vegetable room to extend to the specific low temperature room. A technical means having a cool air supply port for the vegetable compartment and a cool air supply port for the vegetable compartment, wherein the cool air return duct extends to the back of the vegetable compartment and has a cool air return portion of the vegetable compartment is employed.
[0011]
Further, the present invention provides, as one specific means for solving the above-mentioned problem, a heat-insulating member in which the upper-surface duct has a front plate constituting an upper wall of the refrigerator compartment and a duct portion combined with a back side thereof. The rear duct and the cool air return duct are configured by being combined with an inner box (inner wall plate) of a refrigerator main body, and a heat insulating member forming a front plate forming a rear wall of the refrigerator compartment and a duct portion combined with a back side thereof. A technical means which is configured by being combined with an inner box (inner wall plate) of a refrigerator main body and which forms the cooler chamber portion as the heat insulating member of the cold air distribution duct is employed.
[0012]
Further, the present invention adopts, as one specific means for solving the above-mentioned problem, in the above, a technical means in which the cold air circulating blower for the refrigerator compartment is operated even when the front door of the refrigerator compartment is open. .
[0013]
The present invention also provides a refrigeration operation in which the refrigerant compressed by the compressor and passed through the condenser flows from the refrigerator cooler to the freezer cooler to cool the refrigerator and the freezer by operating each of the blowers. A technical means having a mode, wherein the temperature control of the refrigerator compartment is performed by controlling the refrigerant flow path to the refrigerator compartment cooler based on the temperature sensing of the refrigerator compartment sensor.
[0014]
Further, in the above, in the above, the refrigerant after being compressed by the compressor flows from the refrigerator cooler to the freezer cooler, and operates the blowers to cool the refrigerator and the freezer. A mode, wherein the compressor is controlled based on temperature sensing of a freezer compartment sensor, and the temperature control of the refrigerator compartment is controlled based on a temperature sensing of the refrigerator compartment sensor by controlling a refrigerant flow path to the refrigerator compartment cooler. The technical means performed by was adopted.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, an embodiment of the refrigerator of the present invention will be described. 1 to 9 show an embodiment of the present invention. FIG. 1 is a front view of a refrigerator, FIG. 2 is a longitudinal sectional side view of the refrigerator, FIG. 3 is a front view of a refrigerator main body, and FIG. FIG. 5 is an explanatory view showing the configuration of the upper part of the cold air distribution duct, FIG. 6 is a top perspective view of the upper duct member, FIG. 7 is an exploded perspective view of the rear duct member and the blower portion, and FIG. FIG. 9 is a circuit diagram, and FIG. 9 is a control configuration diagram of the refrigerator.
[0016]
1 to 9, reference numeral 1 denotes a refrigerator main body, which has a heat insulating structure in which a foam heat insulating material 4 is filled between an outer box (outer wall plate) 3 and an inner box (inner wall plate) 2. A refrigerator compartment 5, a vegetable compartment 6, and a freezer compartment 7 are provided in the refrigerator main body 1 from above, and a refrigerator compartment 5 and a partition plate (compartment wall) 8 above the refrigerator compartment 5 are provided at the bottom of the refrigerator compartment 5. A specific low-temperature room 9 is provided, and the freezing room 7 is divided into an upper freezing room 10, a lower freezing room 11, and an ice making room 20. A front opening of the refrigerator compartment 5 is closed by a pivotable door 12 that is opened and closed by being laterally pivoted by a hinge device on one side of the refrigerator body 1. The front opening of the vegetable compartment 6 is closed by a drawer-type door 14 that is pulled out forward together with a vegetable container 13 that is supported by the left and right rails or roller devices provided in the vegetable compartment 6 so as to be able to be pulled out in the front-rear direction. Like the vegetable compartment 6, the front openings of the upper freezer compartment 10 and the lower freezer compartment 11 are pulled forward together with the containers 15 and 16 supported on the left and right rails provided in the freezer compartment so that they can be pulled out in the front-rear direction. The doors 17 and 18 are closed. Reference numeral 19 denotes a shelf provided in a plurality of stages in the refrigerator compartment 5.
[0017]
An ice making room 20 is formed on the left side of the upper freezing room 10. In the ice making room 20, an automatic ice making machine is provided at an upper part, and an ice storage container is arranged at a lower part thereof. Like the vegetable compartment 6, the ice storage container is supported so as to be able to be pulled out in the front-rear direction with respect to left and right rails provided on the left and right walls in the ice making compartment 20, respectively. This is a mechanism that is drawn forward together with the door 23.
[0018]
Reference numeral 25 denotes a compressor of the refrigerant of the refrigeration system, reference numeral 26 denotes a condenser of the refrigerant of the refrigeration system, and reference numeral 27 denotes an evaporating dish for evaporating defrost water of a cooler described later by the heat of the condenser 26. 28 and 29 are coolers (evaporators) of the refrigerant of the refrigeration system, 28 is a cooler for the freezing room 7, and 29 is a cooler for the refrigerator room 5. Reference numeral 30 denotes a cool air circulating blower for the freezing room 7, and reference numeral 31 denotes a cool air circulating blower for the refrigerating room 5. The cool air cooled by the cooler 28 for the freezing room 7 is circulated by the blower 30 to return to the cooler 28 via the ice making room 20, the upper freezing room 10 and the lower freezing room 11. Further, the cool air cooled by the cooler 29 for the refrigerator compartment 5 circulates back to the cooler 28 via the refrigerator compartment 5, the specific low-temperature compartment 9 and the vegetable compartment 6 by the blower 31 by a duct arrangement configuration described later. The specific low-temperature chamber 9 is provided with a container 50 supported so as to be able to be pulled out in the front-rear direction with respect to the left and right rails provided in the specific low-temperature chamber 9.
[0019]
Reference numeral 32 denotes a capillary tube as a decompression device for the refrigerant flowing into the cooler 28 for the freezing room 7, and reference numeral 33 denotes a capillary tube as a decompression device for the refrigerant flowing to the cooler 29 for the refrigerator compartment 5. Reference numeral 34 denotes a refrigerant flow switching device for switching the flow of the refrigerant between the cooler 28 for the freezing room 7 and the cooler 29 for the refrigerating room 5. It is a so-called three-way solenoid valve in which opening and closing of the valve 36 and the refrigerator compartment 5 side valve 37 are controlled. Instead of the three-way solenoid valve, an electromagnetic valve for opening and closing the refrigerant passage 38 to the cooler 28 for the freezing room 7 and an electromagnetic valve for opening and closing the refrigerant passage 39 to the cooler 29 for the refrigerator compartment 5 are provided respectively. Control can be performed.
[0020]
Numeral 40 is a freezing room sensor provided for controlling the temperature of the freezing room 7, and it is sufficient to substantially control the temperature of the freezing room 7 within a predetermined range. Therefore, the temperature of the freezing room 7 is directly or indirectly controlled. It is provided to sense the temperature of the freezing room 7 or the temperature of the cooler 28 so as to sense. Reference numeral 41 denotes a refrigerator compartment sensor provided for controlling the temperature of the refrigerator compartment 5, and it is sufficient to substantially control the temperature of the refrigerator compartment 5 within a predetermined range. Therefore, the temperature of the refrigerator compartment 5 is directly or indirectly controlled. It is provided to sense the temperature of the refrigerator compartment 5 or the temperature of the cooler 29 so as to sense it. Reference numeral 42 denotes a defrost end sensor for detecting the defrost end temperature of the cooler 28, and reference numeral 43 denotes a defrost end sensor for detecting the defrost end temperature of the cooler 29. 44 is an electric heater for defrosting of the cooler 28, and 45 is an electric heater for defrosting of the cooler 29. Reference numeral 46 denotes a microcomputer-type control device, which controls the compressor 25, the blowers 30 and 31, and the defrosting electric heaters 44 and 45 according to signals from the freezing room sensor 40, the refrigerator compartment sensor 41, the defrosting end sensors 42 and 43, and the like. , And the operation of the cool air adjusting device 31, the refrigerant flow switching device 34, and the like.
[0021]
The configuration of the cool air circulation duct on the side of the refrigerator compartment 5 and the vegetable compartment 6 will be described. As shown in FIGS. 2 to 7, a refrigerator compartment 5 is provided at an upper portion, and a freezer compartment 7 is provided at a lower portion, and a refrigerator cooler 29 and a cool air circulation for the refrigerator compartment dedicated to the refrigerator compartment 5 and the freezer compartment 7, respectively. A refrigerator 31 is provided with a blower 31, a cooler 28 for a freezer compartment and a cool air circulation blower 30 for a freezer compartment, and a vegetable compartment 6 is provided between the refrigerator compartment 5 and the freezer compartment 7 in a refrigerator for cooling the refrigerator compartment 5 and the freezer compartment 7. The specific low-temperature chamber 9 is provided at the lower part of the refrigerator compartment, the refrigerator cooler 29 is disposed in the cooler chamber 51 formed at the upper rear part of the refrigerator compartment 5, and the cool air circulation blower 31 for the refrigerator compartment is located above the refrigerator compartment 51. Located in the department. The cool air duct 52 for circulating the cool air cooled by the cooler cooler 29 to the cool room 5 includes a cool air distribution duct 52A and a cool air return duct 58. The cool air distribution duct 52A that distributes and supplies cool air to each room has an upper surface duct 53 formed on the upper surface of the refrigerator compartment 5 and a rear duct 54 formed vertically on the left and right sides of the cooler room 51. The upper surface duct 53 has a cool air outlet 55 for forming a cool air curtain that flows from the top to the bottom over substantially the entire width of the front opening of the refrigerator compartment 5 at the front part. The cool air outlet 55 includes a large number of honeycomb-shaped cool air outlets. As shown in FIG. 3, the rear duct 54 extends vertically to the left and right ends of the rear part of the refrigerator compartment 5, and extends over the respective shelves 19 of the refrigerator compartment 5 from the cool air supply port 56 on the rear face of the refrigerator compartment 5. And a cold air supply port 59 for the specific low-temperature chamber 9 and a cold air supply port 57 for the vegetable chamber 6 extending to the back of the vegetable room 6. A cool air return duct 58 for returning cool air to the cooler room 51 is disposed below the cooler room 51 between the left and right cool air distribution ducts, that is, the rear ducts 54, 54, and extends to the back of the vegetable room 6 to extend the vegetables. The cold air return part 60 of the chamber 6 is provided at the lower end.
[0022]
The configuration of the cold air duct 52 is shown in FIGS. In the cold air distribution duct 52A forming the back duct 54 and the top duct 53, the back duct member forming the back duct 54 is mainly made of a front plate 61 formed of a synthetic resin such as polypropylene, and a styrene foam or the like combined on the back thereof. And a molded heat insulating material 62. The upper surface duct member constituting the upper surface duct 53 is mainly composed of a front plate 63 formed by molding a synthetic resin such as polypropylene, and a molded heat insulating material 64 such as styrene foam to be combined with the back plate. The front plate 61 forms the rear wall of the refrigerator compartment 5, and the front plate 63 forms the upper wall of the refrigerator compartment 5. The molded heat insulating material 62 is formed by recessing the duct portion, and the molded heat insulating material 64 is formed by recessing the duct portion 64A. The duct portion 62A recessed in the molded heat insulating material 62 is covered with a molded heat insulating material cover 62B such as styrene foam to form a rear duct.
54 are formed. The front plate 61 and the molded heat insulating material 62 are assembled into the refrigerator body 1 from the front opening in a combined state. In the case where the cover 62B is not provided, the front plate 61 and the molded heat insulating material 62 are assembled into the refrigerator main body 1 from the front opening in a combined state, so that the inner box ( Between the inner wall plate 2 and the molded heat insulating material 62, a rear duct 54 extending in the vertical direction to the left and right of the rear of the refrigerator compartment 5 is formed. In addition, the front plate 63 and the molded heat insulating material 64 are combined and assembled into the refrigerator main body 1 from the front opening, so that the inner box (inner wall plate) 2 and the formed heat insulating material 64 are formed in the recessed duct portion 64A. Between them, a horizontal upper surface duct 53 is formed on the upper surface portion of the refrigerator compartment 5. By this combination, the front plate 61 and the front plate 63, and the formed heat insulating material 62 and the formed heat insulating material 64 are joined to form a state in which the upper surface duct 53 and the rear surface duct 54 communicate with each other.
[0023]
The rear duct member constituting the rear duct 54 is formed with a cooler room 51 in which the cooler 29 is arranged and a portion in which the blower 31 is arranged above the cooler room 51. Specifically, on the back side of the molded heat insulating material 62 covered with the front plate 61, a cooler chamber portion 51A in which the cooler 29 is disposed is formed by being depressed, and a portion 31A in which the blower 31 is disposed above the cooler chamber portion 51A. A rear duct 54 for supplying cool air to the refrigerator compartment 5, the specific low-temperature compartment 9 and the vegetable compartment 6 extends downward on the left and right sides of the cooler compartment 51A. By incorporating a rear duct member in which the formed heat insulating material 62 is covered by the front plate 61 into the refrigerator main body 1 from the front opening thereof, the cooler room 51 and the rear duct 54 sealed between the inner box (inner wall plate) 2 and the inner box (inner wall plate) 2 are formed. Formally formed. As shown in FIG. 4, the molded heat insulating material 62 has a shape in which the front plate 61 is swelled forward just below the cooler chamber portion 51 </ b> A, and this portion 70 is formed by the defrosting electric heater 45 and the lower portion thereof. This is an arrangement portion of the dew receiving tray 71 provided in the storage device. In addition, the cooler 29 and the blower 31, the defrosting electric heater 45, the dew receiving tray 71, and the like are provided in the inner box (the inner wall plate) of the refrigerator main body 1 before the front plate 61 and the molded heat insulating material 62 are incorporated into the refrigerator main body 1. 2) is in a state in which it is fixed in advance to 2 and required electric wiring is performed.
[0024]
The cool air return duct 58 is formed between the front plate 61 and the inner box (inner wall plate) 2 of the refrigerator main body 1 so as to be located between the left and right rear ducts 54 and below the cooler room 51. You. This is because the temperature is substantially higher than the cool air supplied from the rear duct 54 to the refrigerator compartment 5 or the like, and there is no need for heat insulation. The cool air return duct 58 has a cool air return portion 60 at the lower end thereof communicating with a cool air return port 65 formed on the back surface of the vegetable compartment 6. A communication passage 83 is formed in the partition wall of the refrigerator compartment 5 and the vegetable compartment 6 so that the cool air in the refrigerator compartment 5 flows into the vegetable compartment 6.
[0025]
In order to distribute an appropriate amount of cool air from the blower 31 to the upper duct 53 and the rear duct 54, a cool air distribution gate 66 is formed in the molded heat insulating material 62. The cool air distribution gate 66 has an opening 68 for supplying cool air to the upper surface duct 53 at a position in front of the center of the blower 31, and a streamlined guide wall 67 formed on the left and right of the opening 68. The supplied cool air is divided into a portion flowing forward from the opening 68 and a portion guided by the guide wall 67 and flowing to the left and right rear ducts 54. The outlet side of the opening 68 has a widened area 69 for matching with the upper surface duct 53. The upper surface duct 53 is formed with a molded heat insulating material 64 having a distribution wall portion 74 at the center so that the cool air flowing out of the opening 68 is divided into the left and right passages.
[0026]
As a result, the cool air that has exited from the opening 68 passes through the cold air passages 64A on the left and right sides of the branch wall portion 74 from the widened region 69, and from the cool air outlet 55 as a substantially uniform cool air curtain through the front opening of the refrigerator compartment 5 from above. Flow down. Further, the cool air flowing into the rear duct 54 from the guide wall 67 is distributed and supplied to the refrigerator compartment 5, the specific low-temperature compartment 9 and the vegetable compartment 6 from each cold air supply port while flowing down the rear duct 54, and to each compartment. Sufficient cold air supply is secured. Reference numeral 72 denotes a manual damper device for adjusting the amount of cool air supplied from the cool air supply port 59 to the specific low-temperature chamber 9. Reference numeral 73 denotes a cool air return port for returning cool air in the specific low temperature chamber 9 to the cool air return duct 58.
[0027]
Reference numeral 76 denotes an adjusting unit for adjusting the amount of cool air flowing through the upper surface duct 53, and is formed in a rib shape on the molded heat insulating material 64 so as to protrude into the cool air passage 64A. Since the blower 31 is a propeller fan or a turbo fan, the air flow differs on the left and right sides of the shaft depending on the rotation direction. For this reason, since the amount of cool air supplied from the opening 68 to the upper surface duct 53 is different on the left and right sides, this adjusting unit is used in order to make the cool air substantially uniform and to form a substantially uniform cool air curtain from the cool air outlet 55. 76 arrangements are defined.
[0028]
The branch wall portion 74 has an opening 77 at the center, and an illumination lamp chamber 79 for accommodating the refrigerator lamp 78 is formed on the front plate 63 so as to protrude upward. Reference numeral 80 denotes a translucent lighting lamp front cover, and 81 denotes a lighting lamp back cover. Reference numeral 82 denotes a cool air outlet cover that forms the cool air outlet 55, and is combined with the front plate 63. 83 is a sealing material for closing a gap between the molded heat insulating material 64 and the inner box (inner wall plate) 2.
[0029]
In the above configuration, first, a normal cooling operation will be described. The freezing room 7 and the refrigerating room 5 are not cooled to a predetermined lower limit temperature, that is, the compressor 25 and the blowers 30 and 31 are operated to circulate cool air to the freezing room 7 and the refrigerating room 5, and these rooms are In a so-called refrigeration operation mode in which cooling to the predetermined lower limit temperature is required, the compressor 25, the blower 30, and the blower 31 are operated (ON), the refrigerant passage 38 is closed by the solenoid valve 34, and the refrigerant passage 39 is opened. The refrigerant flows from the cooler 29 to the cooler 28 and returns to the compressor 25.
[0030]
The cool air cooled by the cooler 29 is split by the blower 31 into the upper duct 53 and the rear duct 54, and flows from the cool air outlet 55 through the front opening of the refrigerator compartment 5 as a substantially uniform cool air curtain from top to bottom. The cool air that has flowed into the rear duct 54 is discharged downward from the cool air supply port 56 to the refrigerator compartment 5 while flowing down the rear duct 54, is discharged from the cool air supply port 59 to the specific low-temperature chamber 9, and flows from the cool air supply port 57 to the vegetable compartment 6. To cool each of these chambers. The cool air in the refrigerator compartment 5 is supplied to the vegetable compartment 6 from the communication passage 83. The cool air in the specific low-temperature chamber 9 returns from the cool air return port 73 to the cool air return duct 58, and the cool air in the vegetable room 6 returns from the cool air return port 65 to the cool air return duct 58, is cooled again by the cooler 29, and repeats the above circulation.
[0031]
On the other hand, the cool air cooled by the cooler 28 is circulated to the ice making room 20, the upper freezing room 10, and the lower freezing room 11 by the blower 30, and cools these rooms.
[0032]
When the refrigerating room sensor 41 detects a predetermined lower limit temperature by continuing the freezing and refrigeration operation mode, the solenoid valve 34 operates to close the refrigerant passage 39, the supply of the refrigerant to the cooler 29 is stopped, and the refrigerant is cooled from the refrigerant passage 38. The circulation goes back to the compressor 28 and returns to the compressor 25. The humidification operation (or moisture operation) mode is set by the switching of the refrigerant passage. That is, the cooling air circulation blower 31 for the refrigerator compartment is set to the operation mode, and the air in the refrigerator compartment 5 is circulated to the refrigerator cooler 29 to melt the frost adhering to the refrigerator cooler 29, so that the refrigerator compartment 5 is humidified. The humidifying operation (or moisturizing operation) mode is set to (or moisturizing state). In the humidification operation (or moisture operation) mode, when the freezer compartment sensor 40 does not detect the predetermined lower limit temperature, the compressor 25 and the blowers 30 and 31 are operated (ON) to promote the cooling of the freezer compartment 7. You. In this humidifying operation (or moistening operation) mode, the blower 31 is operated for a predetermined time set in advance, and a preferable result is usually obtained in about 3 to 20 minutes. This time is set differently depending on the type of refrigerator.
[0033]
Then, when the freezing room 7 or the cooler 28 reaches a predetermined lower limit temperature, the solenoid valve 34 operates based on the temperature detection of the freezing room sensor 40 to close the refrigerant passage 38 and stop (OFF) the compressor 25. The blower 30 is stopped (OFF) with a predetermined delay from the stop (OFF) of the compressor 25. This time is set to a time during which the cooling of the cooler 28 is effectively continued by the evaporation of the refrigerant accumulated in the cooler 28, and a favorable result is obtained in about 3 minutes. This time is set differently depending on the type of refrigerator.
[0034]
The compressor 25 and the blowers 30, 31 operate (ON) again when the freezer compartment sensor 40 detects a predetermined upper limit temperature. There is also a method of starting the re-operation (ON) of the compressor 25 and the blowers 30 and 31 when both the freezer compartment sensor 40 and the refrigerator compartment sensor 41 detect a predetermined upper limit temperature, but the former method will be described.
[0035]
When the freezing room sensor 40 senses a predetermined upper limit temperature, the compressor 25 is operated (ON), the solenoid valve 34 is operated to open the refrigerant passage 38 and flow the refrigerant to the cooler 28, and the blower 30 is operated (ON). ) To promote the cooling of the freezing compartment 7. When the refrigerator compartment sensor 41 senses a predetermined upper limit temperature, the solenoid valve 34 operates to open the refrigerant passage 39 to flow the refrigerant from the coolers 29 to 28, and the blower 31 is operated again (ON). Then, the freezer compartment 7 and the refrigerating compartment 5 enter a freezing / refrigerating operation mode in which the cooling is promoted. In such control in the freezing / refrigerating operation mode, the temperature range of the freezing room 7 is controlled, for example, in a range of −18 ° C. to −20 ° C., and the average temperature of the refrigerating room 5 is, for example, about 3 ° C. The lower limit temperature is controlled to 1.8 ° C. to the upper limit temperature 4.2 ° C., and the temperature of the vegetable compartment 4 is controlled to about 3 to 5 ° C. The specific low-temperature room 9 is a chilled room at approximately 1 ° C. higher than 0 ° C., an ice green room at approximately −1 to −2 ° C. lower than 0 ° C. and higher than the freezing temperature of food, and storage. It may be a partial chamber at about -4 ° C, where a thin layer of ice is formed on the surface of the food.
[0036]
In this case, there is a method of delaying the time when the blower 31 operates (ON) for a predetermined time. At the start of the freezing and refrigeration operation mode, the temperature of the cooler 29 for the refrigerator compartment 5 has risen to about 0 ° C. Therefore, if the blower 31 is started simultaneously with the start of the operation (ON) of the compressor 25, the cooler 29 The high-temperature refrigerant in the inside flows into the cooler 28 for the freezing room 7 and the temperature of the cooler 28 below zero rises, and as a result, the temperature of the freezing room 7 rises. Therefore, the blower 31 is started with a predetermined delay from the start of the operation (ON) of the compressor 25. This time is a time in which the expected effect of substantially suppressing the temperature rise of the freezing room 7 as described above can be expected.
[0037]
Further, the blower 31 is controlled by a door switch that operates by opening and closing the refrigerator compartment door 12 so as to operate (ON) when the refrigerator compartment door 12 is opened and to stop (OFF) when the refrigerator compartment door 12 is closed. Is done. For this reason, when the refrigerator compartment door 12 is opened, the blower 31 is operated (ON) to form a cool air curtain blown out from the outlet 55 at the front opening of the refrigerator compartment 5.
[0038]
According to the present invention, as described above, the refrigerator cooler is arranged in the cooler room formed at the upper rear part of the refrigerator room, the cool air circulation blower is arranged above the cooler room, and the refrigerator cooler is arranged. A cold air distribution duct for distributing the cool air cooled in the refrigerator compartment to the refrigerator compartment, an upper surface duct formed on an upper surface portion of the refrigerator compartment to blow out the cool air from the top to the front opening of the refrigerator compartment, and the cooler compartment. A rear duct that is formed vertically on the left and right sides of the refrigerator compartment and supplies cool air from the back of the refrigerator compartment to the refrigerator compartment, and a cool air return duct to the cooler compartment is located between the left and right rear ducts. It is arranged below the cooler room.
[0039]
By providing this upper surface duct, the refrigerator compartment is cooled by both the cool air supplied from above the front opening and the cool air supplied from the back, and even when the food is full, the cooling of the front side is performed by the cool air from the upper surface duct. And the back side is cooled by cold air from the back, and the cooling effect of the stored food is improved. Further, since the cooling blower also serves as a cool air curtain for the opening of the refrigerator compartment front, the air curtain blower and its air duct which would otherwise occur when separately provided are unnecessary.
[0040]
In addition, it is possible to solve the problem of reducing the volume of the vegetable room when a cooler or a blower is conventionally arranged on the back of the vegetable room, and it is an effective configuration for forming a vegetable room with a large storage volume without increasing the refrigerator. It is. As a method of circulating the cooled heavy air because the cooler moves to the upper part of the refrigerator, more efficient air circulation can be achieved as compared with the related art in which the cooler is arranged on the back side of the vegetable compartment. Furthermore, in a refrigerator having a refrigerator compartment at the top, when the height of the refrigerator is increased, providing the refrigerator compartment at the upper rear portion of the refrigerator compartment makes use of the deep interior of the refrigerator, which is inconvenient to use. It is effective in the sense of doing.
[0041]
The present invention can also adopt an arrangement in which the rear duct and the cold air return duct are arranged side by side on the rear side of the refrigerator compartment, so that the formation of the cool air circulation duct is simplified and effective. In addition, the duct configuration can be made by a combination of the front plate constituting the inner wall of the refrigerator compartment and the heat insulating member which substantially forms the duct, which is effective in assembling construction.
[0042]
The present invention is also configured such that the rear duct extends to the rear of the vegetable compartment and has a cool air supply port for the vegetable compartment, and the cool air return duct extends to the rear of the vegetable compartment and has a cool air return portion of the vegetable compartment. For this reason, the supply of cold air to the vegetable compartment is good, and it is suitable for indirectly cooling vegetables in the periphery of the vegetable container provided in the vegetable compartment. In addition, a common duct for returning cold air from the refrigerator compartment, the vegetable compartment and the specific low-temperature compartment can be formed between the rear ducts below the cooler compartment, thereby simplifying the duct configuration.
[0043]
The present invention is not limited to the embodiments described above, and various changes can be considered without departing from the technical scope of the present invention, and include various embodiments.
[0044]
The present inventionAccording to, the refrigerator compartment is cooled by both the cool air supplied from above the front opening and the cool air supplied from the back, and even when the food is full, the cooling on the front side is satisfactorily cooled by the cool air from the upper duct. Then, the back side is cooled by cold air from the back, and the cooling effect of the stored food is improved. Further, since the cooling blower also serves as a cool air curtain for the opening of the refrigerator compartment front, the air curtain blower and its air duct which would otherwise occur when separately provided are unnecessary.
[0045]
Further, in a refrigerator having a refrigerator compartment at the top, it is effective as a system for effectively circulating cooled heavy air by effectively using the upper rear portion of the refrigerator, which is inconvenient to use, as a cooler compartment. In addition, by arranging the cool air distribution duct and the cool air return duct side by side on the rear side of the refrigerator compartment, the cool air circulation duct is effectively formed, and the assembly structure is also effective.
[0046]
AlsoThe present inventionAccording to this, in addition to the effect of the first invention, a vegetable room having a large storage capacity can be formed without increasing the size of the refrigerator. The rear duct extends to the rear of the vegetable compartment and has a cool air supply port for the vegetable compartment, and the cool air return duct extends to the rear of the vegetable compartment and has a cool air return portion of the vegetable compartment. For this reason, the cooling air circulation to the vegetable room is improved and the cooling capacity of the vegetable room is improved, so that even if the volume of the vegetable room is increased, it is possible to sufficiently cope with the body and the vegetables inside the vegetable container provided in the vegetable room are removed from the periphery. Also suitable for indirect cooling. Further, a duct for returning cold air from the refrigerator compartment and the vegetable compartment can be formed between the rear ducts below the cooler compartment, and the duct configuration is simplified.
[0047]
AlsoThe present inventionAccording to the rear duct extends to the back of the vegetable compartment and has a cool air supply port for the vegetable compartment and a cold air supply port for the specific low temperature compartment, and the cool air return duct extends to the back of the vegetable compartment and has a cool air return portion for the vegetable compartment. Configuration. Thereby, the supply of cold air to the vegetable room and the specific low-temperature room is improved, the cooling capacity of the vegetable room and the specific low-temperature room is improved, and the vegetable room and the specific low-temperature room can be cooled to a predetermined temperature. For this reason, even if the volume of the vegetable room is increased, it is possible to sufficiently cope with the physical condition, and even if the specific low-temperature room is an ice temperature room or a partial room at 0 ° C. or less, the predetermined temperature can be sufficiently ensured. In addition, a common duct for returning cold air from the refrigerator compartment, the vegetable compartment and the specific low-temperature compartment can be formed between the cold air distribution ducts below the cooler compartment, thereby simplifying the duct configuration.
[0048]
AlsoThe present inventionAccording to the above, the configuration of the top duct, the back duct, the cool air return duct, the cooler room, and the top wall and the back wall of the refrigerator compartment are facilitated by the front plate and the heat insulating member on the back side, and the duct configuration is simple. become.
[0049]
AlsoThe present inventionAccording to, when the refrigerator compartment door is closed, the refrigerator compartment is cooled by both the cool air supplied from above the front opening and the cool air supplied from the back, and even when the food is filled, the cooling on the front side is on the upper surface. It is cooled well by the cool air from the duct, and the back side is cooled by the cool air from the back, and the cooling effect of the stored food is improved. When the refrigerating compartment door is opened, the cooling blower is turned on to form a cool air curtain at the opening of the refrigerating compartment front, so that the temperature rise in the refrigerating compartment is suppressed, and the food storage effect is improved.
[0050]
AlsoThe present inventionAccording to the above, since the temperature control of the refrigerator compartment is performed by controlling the refrigerant to the refrigerator cooler, the temperature of the refrigerator compartment can be controlled without providing a damper device for adjusting the amount of cold air supplied to the refrigerator compartment. There is no reduction in the volume of the vegetable room or the refrigerator room due to the volume occupied by the space, and the complexity of the duct structure is also eliminated.
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, in the refrigerator which provided the refrigerator compartment in the upper part, it is effective as a system which circulates the cooled heavy air effectively using the upper back part of the refrigerator which is inconvenient to use effectively as a cooler room. . In addition, the circulation of cool air to the vegetable room is improved, and the cooling capacity of the vegetable room is improved.
[Brief description of the drawings]
FIG. 1 is a front view of a refrigerator according to an embodiment of the present invention.
FIG. 2 is a vertical side view of the refrigerator according to the embodiment of the present invention.
FIG. 3 is a front view of the refrigerator body according to the embodiment of the present invention.
FIG. 4 is an exploded perspective view of a cool air duct of the refrigerator according to the embodiment of the present invention.
FIG. 5 is an explanatory diagram showing a configuration of an upper portion of a cool air duct of the refrigerator according to the embodiment of the present invention.
FIG. 6 is a top perspective view of a top duct member of the refrigerator according to the embodiment of the present invention.
FIG. 7 is an exploded perspective view of a rear duct member and a blower portion of the refrigerator according to the embodiment of the present invention..
FIG. 8 is a refrigerant circuit diagram of the refrigerator according to the embodiment of the present invention.
FIG. 9 is a control configuration diagram of the refrigerator according to the embodiment of the present invention.
[Explanation of symbols]
1 ... refrigerator body
2. Inner box
3 ... Outer box
4 ... Insulation material
5 …… Refrigerator room
6. Vegetable room
7 ... freezer
8 ... wall
9 …… Specified low temperature room
10. Upper freezer compartment
11 ... lower freezer
12… Refrigerator door
13. Vegetable container
14. Vegetable room door
15… Freezer container
16… Freezer compartment
17 ... Upper freezer door
18 ... Lower freezer door
25 ... Compressor
26… Condenser
28 ... Freezer cooler
29… Refrigerator cooler
30 ... Cold air circulation blower for freezer compartment
31 ... Cold air circulation blower for refrigerator compartment
34 ... refrigerant flow switching device
38 Refrigerator-side refrigerant passage
39 Refrigerator-side refrigerant passage
40 ... Freezer sensor
41… Refrigerator sensor
44, 45 ... electric heater for defrost
46 ... Control device
51 ... cooler room
52 ... Cold air duct
52A… Cold air distribution duct
53 ... Upper surface duct
54 ... Back duct
55 ... Cold air outlet
56… Cold air supply port
57 ... Cold air supply port
58… Cold air return duct
59… Cold air supply port
60: Cold air return
61, 63 ... front plate
62, 64 ... molded heat insulating material
65 ... Cold air return
83… Communication passage

Claims (7)

It has a refrigerating chamber and the freezing chamber, and each of the refrigerating compartment cooler and refrigerator compartment cold air circulating blower, a freezer compartment cooler and freezer cold air circulating blower provided for the freezing chamber and the refrigerating chamber, wherein In the refrigerator that cools the refrigerator compartment and the freezer compartment,
The refrigerator cooler is arranged in a cooler room formed at the upper rear of the refrigerator room, and the cool air circulation blower is arranged above the cooler room, and cooled by the refrigerator cooler. A cold air distribution duct for distributing the cold air to the refrigerator compartment has an upper surface duct formed on the upper surface of the refrigerator compartment to blow cold air from the top to the front opening of the refrigerator compartment from the top to the bottom, and the left and right sides of the cooler compartment. And a back duct for supplying cool air from the back of the refrigerator compartment to the refrigerator compartment, wherein a cool air return duct to the cooler compartment is located between the left and right rear ducts and the cooler Located below the room, the back duct extends to the back of the vegetable room and has a cool air supply port for the vegetable room, and the cool air return duct extends to the back of the vegetable room and has a cool air return for the vegetable room. A refrigerator characterized by that: It has a refrigerator room provided at the upper part and a freezer room provided at the lower part, and has a refrigerator cooler and a cool air circulation blower dedicated to the refrigerator, and a refrigerator cooler and a freezer, respectively. A refrigerator for cooling the refrigerator compartment and the freezer compartment, provided with a room cool air circulation blower,
Before SL provided vegetable compartment between the refrigerating chamber and the freezing chamber, the refrigerating compartment cooler is disposed in the cooler chamber which is formed on the top rear of the refrigerating chamber, the refrigerating compartment cold air circulating blower said cooler A cold air distribution duct, which is arranged above the chamber and distributes the cool air cooled by the cooler cooler to the refrigerator compartment, blows the cool air from the top to the bottom at the front opening of the refrigerator compartment. An upper surface duct formed on an upper surface portion and a rear surface duct formed on the left and right sides of the cooler room in a vertical direction to supply cool air from the rear surface of the cooler room to the cooler room, and cool air to the cooler room is provided. The return duct is located below the cooler room between the left and right rear ducts, the rear duct extends to the back of the vegetable room and has a cool air supply port for the vegetable room, and the cool air return duct is Extends to the back of the vegetable compartment and returns the cold of the vegetable compartment Refrigerator, characterized in that it comprises a part. It has a refrigerator room provided at the upper part and a freezer room provided at the lower part, and has a refrigerator cooler and a cool air circulation blower dedicated to the refrigerator, and a refrigerator cooler and a freezer, respectively. A refrigerator for cooling the refrigerator compartment and the freezer compartment, provided with a room cool air circulation blower,
The vegetable compartment provided between the front Symbol refrigerating compartment and the freezing compartment, a specific low-temperature chamber provided in the refrigerating compartment lower, the refrigerating compartment cooler is disposed in the cooler chamber which is formed on the top rear of the cooling chamber, The cold-air circulation blower for the refrigerator compartment is disposed above the cooler compartment, and a cold-air distribution duct for distributing cool air cooled by the refrigerator-cooler to the refrigerator compartment is provided at the front opening of the refrigerator compartment from above. An upper surface duct formed on the upper surface of the refrigerator compartment to blow cold air downward, and vertically formed on the left and right sides of the refrigerator compartment to supply cool air from the back of the refrigerator compartment to each shelf of the refrigerator compartment. A communication path through which cool air in the refrigerator compartment flows into the vegetable compartment, and a cool air return duct to the cooler compartment is located between the left and right rear ducts and below the cooler compartment. The back duct extends to the back of the vegetable compartment The specific cold room for cold air supply port and having said vegetable compartment cool air supply port, the cold air return duct refrigerator characterized by having a cool air return portion of the vegetable compartment extends to the back of the vegetable compartment. 4. The refrigerator according to claim 1, wherein the upper surface duct includes a front plate constituting an upper wall of the refrigerator compartment and a heat insulating member forming a duct portion to be combined with a back side thereof, to an inner box (inner wall plate) of the refrigerator body. The rear duct and the cool air return duct are combined with a front plate constituting a rear wall of the refrigerator compartment and a heat insulating member forming a duct portion to be combined with a back side thereof to an inner box (inner wall plate) of the refrigerator body. The refrigerator, wherein the cooler compartment is formed in the heat insulating member of the rear duct. The refrigerator according to any one of claims 1 to 3, wherein the cool air circulating blower for the refrigerator compartment is operated while the front door of the refrigerator compartment is open. A refrigerant that has been compressed by a compressor and passed through a condenser has a refrigeration operation mode in which the refrigerator and the freezer are cooled by the operation of each of the blowers, wherein the refrigerant flows from the refrigerator compartment cooler to the freezer compartment cooler. The refrigerator according to any one of claims 1 to 3, wherein temperature control of the refrigerator compartment is performed by controlling a refrigerant flow path to the refrigerator compartment cooler based on temperature sensing of a refrigerator compartment sensor. A refrigerant after being compressed by a compressor flows from the refrigerator compartment cooler to the freezer compartment cooler, and has a refrigeration operation mode for cooling the refrigerator compartment and the freezer compartment by operating each of the blowers, The refrigerator is controlled based on temperature sensing of a freezer compartment sensor, and the temperature control of the refrigerator compartment is performed by controlling a refrigerant flow path to the refrigerator compartment cooler based on the temperature sensing of the refrigerator compartment sensor. The refrigerator according to any one of claims 1 to 3.

Images