JP6567918B2 - refrigerator - Google Patents

Description

  The present invention relates to a refrigerator.

  As a background art in this technical field, there is JP-A-2014-40967 (Patent Document 1). According to claim 1 of this publication, “first supply of cold air to at least one of a storage room in a refrigerated temperature zone, a plurality of shelves provided in the storage room, and a space formed by the plurality of shelves” The cold air duct and the second cold air duct, the air blowing means for blowing cold air to each of the first cold air duct and the second cold air duct, and the first air volume for controlling the air blowing of the first cold air duct In a refrigerator comprising an adjusting device and a second air volume adjusting device that controls the air flow of the second cold air duct, the first cold air from the first cold air duct and the second cold air duct is supplied. A first region, a second region in which cold air is supplied by the second cold air duct between the shelf provided at the uppermost stage in the storage chamber and the upper wall of the storage chamber; Between the shelf provided at the top and the shelf provided at the bottom, the front And a third region to which cold air is supplied by the first cold air duct, and a first temperature detecting means is provided in the first region.

JP2014-40967

  The refrigerator described in Patent Document 1 has a plurality of cold air ducts that supply cold air to the respective areas, and a plurality of air volume adjusting devices that control the air flow of the respective cold air ducts, It is mentioned that by using the temperature detection means to adjust the air volume of each cold air duct, it is possible to cool the food in each region while suppressing overcooling.

  In order to prevent the food from being overcooled and to cool the entire storage room in a well-balanced manner, like the refrigerator described in Patent Document 1, the cooling of each region in the storage room is adjusted by a plurality of cold air ducts and its air volume control device. Means are effective.

  However, Patent Document 1 focuses only on the cooling balance between the respective regions in the storage chamber, and it cannot be said that the cooling balance in each region is sufficient. In order to cool each region in a well-balanced manner, it is necessary to provide a cool air duct structure in which cold air discharge ports of the cold air duct are appropriately provided and cold air can be distributed to these discharge ports in a balanced manner.

In addition to cooling performance, the performance required for refrigerators includes a wide food storage space. Development of a refrigerator that can store a large amount of food and can cool the food in a well-balanced manner is desired. To ensure food storage space and user friendliness,
In order to avoid food storage space, the cold air duct may need to have a curved or branched structure, or it may need to have an asymmetric cross section. Even in such a complicated air passage structure, in order to achieve a well-balanced cooling, the structure of the cold air duct must be able to distribute the cold air to each cold air outlet in a balanced manner.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a refrigerator that keeps a wide space for storing food and distributes cold air in a well-balanced manner from a discharge port, thereby minimizing temperature unevenness in the refrigerator.

In order to solve the above problems, for example, the configuration described in the claims is adopted. The present application includes a plurality of means for solving the above-mentioned problems. To give an example, a storage room in a refrigerated temperature zone, a cold air duct extending up and down for supplying cold air to a space formed in the storage room, The cold air duct includes: a first cold air duct disposed on one side in the left-right direction; and a second cold air duct disposed on the other side in the left-right direction. Two ducts are bent from the upper end of the first cold air duct to the one side from the lower side, and are two from the bifurcated portion near the apex of the portion that is above the upper end of the first cold air duct and forms an acute angle. The first cold air duct and the second cold air duct are at least partially overlapped in vertical projection, and the one-side air passage wall surface upstream of the second cold air duct is more than the branch portion. Is also located on the other side It is characterized in.

  ADVANTAGE OF THE INVENTION According to this invention, the refrigerator which suppressed the temperature nonuniformity in a store | warehouse | chamber small can be provided by distributing cold air from a discharge outlet with sufficient balance, ensuring food storage space widely.

1 is a front view of a refrigerator related to Example 1. FIG. It is AA sectional drawing of FIG. 3 is a schematic front view of the inside of the refrigerator compartment 2 relating to Example 1. FIG. It is a back surface perspective view of the refrigerator compartment airflow duct regarding Example 1. FIG. It is a branching part enlarged view of the refrigerator compartment air duct duct back surface regarding Example 1. FIG. It is BB sectional drawing of FIG. 5, and FF sectional drawing. It is CC sectional drawing, DD sectional drawing, and EE sectional drawing of FIG. It is GG sectional drawing of FIG.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  First, the whole refrigerator will be described with reference to FIGS. 1 is a front view of the refrigerator of the present embodiment, FIG. 2 is a cross-sectional view taken along the line AA of the refrigerator of FIG. 1, and FIG. 3 is a front view of the refrigerator body of FIG.

  The inside of the refrigerator 1 and the outside of the refrigerator are separated by a heat insulating box 10 formed by filling a foam heat insulating material of urethane foam and doors 12 to 15 described later. A plurality of vacuum heat insulating materials 11 are mounted inside the heat insulating box 10 of the refrigerator 1.

  The refrigerator 1 has a plurality of storage rooms in the order of the refrigerator compartment 2, the freezer compartments 3 and 4, and the vegetable compartment 5 from the top. In other words, the refrigerator compartment 2 is arranged at the uppermost stage, and the vegetable compartment 5 is arranged at the lowermost stage, and between the refrigerator compartment 2 and the vegetable compartment 5, the two rooms are insulated from each other. Partitioned freezer compartments 3 and 4 are provided. The refrigerator compartment 2 and the vegetable compartment 5 are storage compartments in a refrigeration temperature zone, and the freezer compartments 3 and 4 are storage compartments in a freezing temperature zone of 0 ° C. or less (for example, a temperature zone of about −20 ° C. to −18 ° C.). is there. The freezer compartment 3 is divided into an ice making chamber 3a and an upper freezer compartment 3b. These storage rooms are partitioned by partition walls 17, 18 and 19.

  On the front surface of the refrigerator 1, doors 12 to 15 that close the front opening portions of the storage chambers 2 to 5 are provided. The refrigerator door 12 closes the front opening of the refrigerator compartment 2, the ice making door 13a closes the front opening of the ice making chamber 3a, and the upper freezer door 13b closes the front opening of the upper freezer 3b. The lower freezer compartment door 14 is a door for closing the front opening of the lower freezer compartment 4, and the vegetable compartment door 15 is a door for closing the front opening of the vegetable compartment 5. The refrigerator compartment door 12 is composed of a double door with double doors, and is composed of a left door 12a and a right door 12b. The ice making room 3a, the upper freezing room 3b, the lower freezing room 4, and the vegetable room 5 are constituted by a drawer-type door, and a container in the storage room is pulled out together with the drawer door.

  The refrigerator 1 is provided with a refrigeration cycle. This refrigeration cycle is configured by connecting a compressor 60, a condenser (not shown), a capillary tube (not shown) and a cooler 70, and a compressor 60 in this order. The compressor 60 and the condenser are installed in a machine room 6 provided at the lower back of the refrigerator body 1. The cooler 70 is installed in a cooler chamber 7 provided behind the freezing chambers 3 and 4, and a blower fan 71 is installed above the cooler 70 in the cooler chamber 7.

  The cold air cooled by the cooler 70 is sent by the blower fan 71 to the storage rooms of the refrigerator compartment 2, the ice making compartment 3 a, the upper freezer compartment 3 b, the lower freezer compartment 4, and the vegetable compartment 5. Specifically, a part of the cool air sent by the blower fan 71 is sent to the refrigerating temperature zone storage room of the refrigerating room 2 and the vegetable room 5 through a damper device that can be opened and closed, and the other part. Are sent to the storage room in the freezing temperature zone of the ice making room 3a, the upper freezing room 3b, and the lower freezing room 4. In other words, the openable / closable damper device allows the cold air from the cooling chamber to be selectively distributed to one or both of the refrigeration outlet to the storage compartment in the refrigeration temperature zone and the refrigeration outlet to the storage compartment in the refrigeration temperature zone. It is a selection means.

  The cool air sent to the respective storage rooms of the refrigerator compartment 2, the ice making room 3a, the upper freezer compartment 3b, the lower freezer compartment 4 and the vegetable compartment 5 by the blower fan 71 passes through the cool air return passage after cooling each storage room. It is returned to the cooler chamber 7. Thus, the refrigerator of the present embodiment has a cold air circulation structure, and maintains each storage room at an appropriate temperature.

  In the refrigerator compartment 2, a plurality of shelves 24a to 24e made of transparent plates are detachably installed. The lowermost shelf 24e is installed so as to be in contact with the back surface and both side surfaces of the heat insulation box 10, and partitions the lowermost space 21 which is the lower space from the upper space. A plurality of door pockets 23a to 23c are installed inside each refrigerator compartment door 12, and these door pockets 23a to 23c project into the refrigerator compartment 2 with the refrigerator compartment door 12 closed. Is provided.

  A back panel 20 that forms a passage through which cool air supplied from the blower fan 71 passes is provided on the back of the refrigerator compartment 2. Further, a refrigerating room cold air duct extending in the vertical direction is provided in the back panel 20 to supply cold air to a space formed in the refrigerating room 2. And this cold room cold air duct is comprised by the 1st cold room cold air duct 21 and the 2nd cold room cold air duct 22 which were provided along with right and left. And the 2nd refrigerator compartment cold air duct 22 is divided into two from the branch part 22c above the upper end of the 1st refrigerator compartment cold air duct 21, and the 1st refrigerator compartment cold air duct 21 and the 2nd refrigerator compartment cold air are divided. The vertical projection with the duct 22 is partially overlapped.

  The first cold room cold air duct 21 has a larger depth dimension than the second cold room cold air duct 22, that is, has a larger air passage area, communicates with the cold air discharge ports 210a to 210d, and mainly each shelf 24a. A cold air path to cool food on ~ 24e. The second refrigerator compartment cool air duct 22 communicates with the cool air outlets 220a and 220b near the ceiling of the refrigerator compartment, and is a cool air passage mainly for cooling food in the refrigerator compartment door pockets 23a to 23c. The difference in the air passage area and the number of outlets of the cold-chamber cool air ducts 21 and 22 is to cool each region equally according to the size of the region to be cooled.

  As a means for detecting the temperature in the refrigerator compartment 2, the refrigerator compartment 2 has a first temperature sensor 271 on the back of the shelf 24d in the back panel 20 and a second temperature sensor 272 in the refrigerator compartment near the refrigerator compartment door 12. It is provided on the ceiling and detects the temperature at the bottom of the refrigerator compartment and at the front of the refrigerator compartment.

  Refrigerating room dampers 270a and 270b are provided upstream of the refrigerating room cooling air ducts 21 and 22, respectively, and the opening / closing of each damper is controlled using the temperatures detected by the temperature sensors 271 and 272, respectively. By adjusting the amount of cool air in the refrigerator compartment cool air ducts 21 and 22, each region in the refrigerator compartment 2 can be maintained at an appropriate temperature.

  Next, the air duct will be described.

  FIG. 4 is a rear perspective view of the refrigerator compartment cool air ducts 21 and 22. As shown in FIG. 4, the second refrigerating room cool air duct 22 has a straight shape in the upstream portion, and the downstream portion has a curved portion 22 a, a straight portion 22 b, and a branch portion 22 c in order from the upstream side. Further, the second refrigerating room cool air duct 22 is divided into two at the branch portion 22c, and the cool air discharge communicated on the downstream side with the air passage formed independently by the continuous air passage wall surface. It has outlets 220a and 220b, and has a structure for discharging cool air from these cool air discharge ports. In order to cool the inside of the refrigerator compartment 2 in a well-balanced manner, it is necessary to devise this branch shape and distribute the cool air evenly to the cool air discharge ports 220a and 220b.

  FIG. 5 is an enlarged view of the vicinity of the branch portion 22c on the back surface of the cold room cool air ducts 21 and 22, and the dotted line P in FIG. 5 is the vertical center line of the branch point of the branch portion 22c of the second cold room cool air duct 22 It is. 6 is a cross-sectional view taken along the line BB in FIG. 5 and a cross-sectional view taken along the line FF in FIG. 5 from above, respectively, the cross-section of the air path before the bending of the second cold room cool air duct 22 and the branch point of the branch portion 22c. The cross section of the air path is shown.

  The surface of the back panel 20 assembled on the surfaces of the cold room cool air ducts 21 and 22 has a smooth curved surface close to a semi-elliptical shape. With this shape, in addition to improving the design of the appearance, the food storage space of the shelves 24a to 24e can be widened so that the food stored by the user can be easily seen and put in and out.

  The refrigeration chamber cool air ducts 21 and 22 have outer surfaces that follow the curved surface of the rear panel 20, and maintain the necessary heat insulation thickness in the space between the rear panel 20 and the box 10, and maximize the wind It has a structure that can take a wide road. Further, since the refrigerator compartment cool air ducts 21 and 22 are separated in the left-right direction, the second refrigerator compartment cool air duct 22 is adjacent to the first refrigerator compartment cool air duct 21 as shown in the AA sectional view of FIG. It has an asymmetric shape in the upstream part.

  7 is a cross-sectional view taken along the line CC in FIG. 5, a cross-sectional view taken along the line DD in FIG. 5, and a cross-sectional view taken along the line EE in FIG. 5 from above, respectively. The air path cross section of the straight part 22b is shown. FIG. 8 is a cross-sectional view taken along the line G-G in FIG.

  Since the cold air flowing in the second cold room cold air duct 22 receives a force that moves to the right side at the curved portion 22a, the left cold air in the second cold room cold air duct 22 flows from the branch portion 22c. It tends to flow into the cool air outlet 220a on the right side. Therefore, as indicated by a dotted line P in FIG. 5, the branch point P of the second refrigerating room cold air duct 22 is configured to be located on the right side of the right air channel wall surface 25a before being bent. As a result, a large amount of the cool air on the right side in the second refrigerating room cool air duct 22 goes straight upward and easily flows from the branch portion 22c to the left cool air discharge port 220b. As a result, even when the second refrigeration room cold air duct 22 is bent upward and to the right, the cold air is prevented from being biased from the branch portion 22c to the left and right cold air outlets, and the cold air is distributed in a balanced manner. it can.

  Further, as shown in the AA cross-sectional view of FIG. 6, the air path of the refrigerator compartment cold air duct 22 has a greater depth and a larger cross-sectional area toward the right side. Therefore, the cold air flowing in the upstream portion of the cold room cold air duct 22 has the largest flow rate in the vicinity of the right-side air channel wall surface 25a. By adopting a configuration in which the branch point P is located on the right side of the right-side air channel wall surface 25a before being bent, the cold air near the right-side air channel wall surface 25a having a large flow rate goes straight and easily flows from the branch part 22c to the left side. Become. For this reason, even if it is a structure where the cold air is easily biased to the right side by the curved portion 22a, it is possible to distribute the air volume evenly to the left and right.

  As shown in FIG. 7, the air path of the cold room cool air duct 22 is inclined to the right side and the depth dimension on the left side gradually increases as it goes from the upstream side to the downstream side of the curved portion. For this reason, the cross section of the air passage approaches the left-right symmetry, and the straight portion 22b has a symmetrical shape. As a result, the deviation of the air volume of the cold air is also reduced.

  The second refrigerating room cool air duct 22 has a straight portion 22b between the right side of the refrigeration chamber cold air duct 22 and the branch portion 22c. On the contrary, the cold air is inclined to the right side at the bending portion 22a, and therefore, the cold air is prevented from being distributed to the right side in the straight direction at the branch point.

  The flow of the cold air in which the deviation in the cross section of the air passage is eliminated by the curved portion 22a, the flow direction is corrected vertically upward by the straight portion 22b, and reaches the branching portion 22c. In the branch part 22c, the deviation of the air volume of the cold air is small and the traveling direction is also vertically upward, so that the cold air is evenly branched, and cool air is discharged from the cold air discharge ports 220a and 220b in a well-balanced manner and supplied into the refrigerator compartment 2. it can.

  Therefore, according to the present embodiment, it is possible to provide a refrigerator in which the temperature unevenness in the refrigerator is kept small by distributing cold air in a balanced manner from the discharge port while ensuring a wide food storage space. In the present embodiment, the second refrigerator compartment cooler air duct 22 has a configuration in which the right side has a depth dimension larger than the left side and curves to the right side on the downstream side (upward) and then reaches the branch (see FIG. 5). However, the configuration may be reversed in the left-right direction.

DESCRIPTION OF SYMBOLS 1 Refrigerator 2 Refrigerating room 3a Ice making room 3b Upper freezing room 4 Lower freezing room 5 Vegetable room 6 Machine room 7 Cooler room 10 Heat insulation wall 11 Vacuum heat insulating material 12a Refrigerating room door left 12b Refrigerating room door right 13a Ice making room door 13b Upper freezing Room door 14 Lower refrigeration room door 15 Vegetable room door 17 Refrigeration room-freezer compartment partition 18 Freezer compartment partition 19 Freezer compartment-vegetable compartment partition 20 Refrigerator back panel 21 First refrigeration compartment cold air duct 22 Second refrigeration compartment cold air duct 22a Curved portion of the second cold room cold air duct 22b Straight portion of the second cold room cold air duct 22c Second cold room cold air duct branching portion 23 Cold room door pocket 24 Cold room shelf 25 Second cold room cold air duct wind Road wall surface 40 Deodorizing member 60 Compressor 70 Cooler 71 Cooling fan 210 First cold air discharge port 211 Second cold air discharge port 270 271 first of the refrigerating compartment temperature sensor 272 second refrigerating compartment temperature sensor

Claims (3)

A first cold air duct disposed on one side in the left-right direction, and a cold air duct extending vertically to supply cold air to a space formed in the storage room. And a second cold air duct disposed on the other side in the left-right direction,
  The second cold air duct is curved from the lower end to the one side from the upper end of the first cold air duct, and is near the apex of the portion that is above the upper end of the first cold air duct and forms an acute angle. Divided into two from the branch,
  The first cold air duct and the second cold air duct have at least partly overlapping vertical projections,
  The refrigerator, wherein the one-side air passage wall surface on the upstream side of the second cold air duct is located on the other side with respect to the branch portion. The refrigerator according to claim 1, wherein the second cold air duct has a straight portion between the second cold air duct and the branch portion after being bent toward the one side. The refrigerator according to claim 1 or 2, wherein the second cold air duct is a portion that curves to the one side, and a depth dimension of the other side gradually increases.

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