TWM647098U - refrigerator - Google Patents

Abstract

This creation is about a refrigerator. [Problem] To provide a refrigerator that can suppress the drying of food in the freezer container while suppressing frost formation on the inside or the upper surface of the freezer container. [Solution] A refrigerator is provided with: a freezing chamber; a cold air blowing outlet for blowing cold air into the freezing chamber; a freezing chamber container having an upper surface opening and being accommodated in the freezing chamber; and an upper surface cover covering the freezing chamber container. The above-mentioned upper surface opening, the above-mentioned cold air blowing outlet blows out the cold air along the upper surface of the above-mentioned upper surface cover, the above-mentioned upper surface cover is provided with an opening area corresponding to the opening shape of the above-mentioned upper surface opening, and in the aforementioned opening area A plurality of opening holes are formed uniformly.

Description

refrigerator

This creation is about refrigerators. This disclosure is about a refrigerator.

Patent Document 1 describes a structure in which an opening of a storage container stored in a freezer compartment is covered with a lid. In Patent Document 1, a frame made of resin and an aluminum plate are integrated to form a lid, and the lid is slidably mounted on a rail provided at the opening of the storage container. In addition, a long hole through which cold air flows is formed on the peripheral edge of the cover body. Prior technical literature patent documents

Patent Document 1: Japanese Patent Application Publication No. 2006-10215

Problems to be solved by creation

This invention proposes a refrigerator. The present disclosure is to provide a refrigerator that can suppress the drying of food in the freezer container while suppressing frost formation in or on the upper surface of the freezer container. means to solve problems

The refrigerator in this disclosure includes: a freezing chamber; a cold air blowing outlet for blowing cold air into the freezing chamber; a freezing chamber container formed with an upper surface opening and accommodated in the freezing chamber; and an upper surface cover made of a resin material to cover the aforementioned freezing chamber. The upper surface opening of the freezer compartment container, the cold air outlet blows out cold air along the upper surface of the upper surface cover, and the upper surface cover is provided with an opening area corresponding to the opening shape of the upper surface opening, in the aforementioned The opening area part is uniformly formed with a plurality of opening holes, and the opening holes are formed repeatedly in the front-rear direction and the left-right direction from the front side to the rear side of the freezing chamber container. In the above structure, the opening area may be formed smaller than the upper surface opening. In the above structure, the opening hole may be a circular hole with a diameter of 3 mm or more and 5 mm or less, or a corner hole of 3 mm or more and 5 mm or less. In the above configuration, in the opening region, an aperture ratio, which is a ratio of an area of a portion where the opening hole is formed to an entire area of the opening region, may be 20% or more and 30% or less. In the above structure, the opening hole may be formed in a circular shape, an elliptical shape, a rounded rectangle, or a rectangular shape. In the said structure, the said upper surface cover may be supported so that it can slide in the said freezing chamber container along the said upper surface opening. In the above-mentioned structure, a pair of flange portions may be formed on the freezer compartment container across the upper surface opening, and a pair of curved support portions may be formed on the upper surface cover corresponding to the pair of flange portions. The aforementioned curved support portion is hooked on the corresponding aforementioned flange portion, whereby the aforementioned upper surface cover is slidably supported. In the above structure, the pair of flange portions may be provided as a pair apart in the blowing direction of the cold air from the cold air outlet, and the curved support portion on the side of the cold air outlet among the pair of curved support portions may be provided as a pair. It is wound around the corresponding flange portion from the outside and enters below the corresponding flange portion. In the above structure, the curved support part on the side away from the cold air outlet among the pair of curved support parts may also be wrapped around the corresponding flange part from the outside and enter under the corresponding flange part. In the above structure, the opening area of the upper surface cover may be made of a transparent material. In the above-mentioned structure, you may have the said freezing chamber container made of resin, and a metal plate detachably provided on the back surface of the said freezing chamber container. The refrigerator in this disclosure includes: a freezing chamber; a cold air outlet that blows cold air into the freezing chamber; a freezing chamber container that is formed with an upper surface opening and is accommodated in the freezing chamber; and an upper surface cover that covers the freezing chamber container. The above-mentioned upper surface opening, the above-mentioned cold air blowing outlet blows out the cold air along the upper surface of the above-mentioned upper surface cover, the above-mentioned upper surface cover is provided with an opening area corresponding to the opening shape of the above-mentioned upper surface opening, and in the aforementioned opening area A plurality of opening holes are formed, and in the opening area part, the ratio of the area of the part where the opening hole is formed to the entire area of the opening area part, that is, the opening ratio is: compared with the area far away from the cold air blowing outlet Below, the area close to the aforementioned cold air blowing outlet is larger. In the above structure, the opening hole may be a circular hole with a diameter of 3 mm or more and 5 mm or less, or a corner hole of 3 mm or more and 5 mm or less. In the above configuration, in the opening region, an aperture ratio, which is a ratio of an area of a portion where the opening hole is formed to an entire area of the opening region, may be 20% or more and 30% or less. In the above structure, the opening hole may be formed in a circular shape, an elliptical shape, a rounded rectangle, or a rectangular shape. In the said structure, the said upper surface cover may be supported so that it can slide in the said freezing chamber container along the said upper surface opening. In the above-mentioned structure, a pair of flange portions may be formed on the freezer compartment container across the upper surface opening, and a pair of curved support portions may be formed on the upper surface cover corresponding to the pair of flange portions. The aforementioned curved support portion is hooked on the corresponding aforementioned flange portion, whereby the aforementioned upper surface cover is slidably supported. In the above structure, the pair of flange portions may be provided as a pair apart in the blowing direction of the cold air from the cold air outlet, and the curved support portion on the side of the cold air outlet among the pair of curved support portions may be provided as a pair. It is wound around the corresponding flange portion from the outside and enters below the corresponding flange portion. In the above structure, the curved support part on the side away from the cold air outlet among the pair of curved support parts may also be wrapped around the corresponding flange part from the outside and enter under the corresponding flange part. In the above structure, the opening area of the upper surface cover may be made of a transparent material. In the above-mentioned structure, you may have the said freezing chamber container made of resin, and a metal plate detachably provided on the back surface of the said freezing chamber container. Creative effect

In the refrigerator of the present disclosure, the cold air flowing along the upper surface cover is difficult to enter the freezer compartment container through the opening hole of the upper surface cover. Even if it enters the inside through the opening hole, it will cause viscosity. Vortex convection causes cold air to escape from nearby openings to the outside. Therefore, it is possible to suppress temperature fluctuations caused by cold air flowing into the freezing chamber container, suppress drying of food in the freezing chamber container, and suppress frost formation in the freezing chamber container. Furthermore, even if frost forms on the upper surface or lower surface of the upper surface cover, cold air flows near the upper surface or lower surface, thereby promoting the sublimation of the frost. Therefore, while suppressing the drying of the food in the freezing chamber container, it is possible to suppress frost formation on the inside of the freezing chamber container or on the upper surface cover.

(Knowledge and insights that form the basis of this disclosure, etc.) The creator of this invention thought that at the time of this disclosure, there was a technology for suppressing the sublimation of moisture in frozen food by providing a cover to the freezer container housed in the freezer.

In the conventional technology, an aluminum plate is used as the lid. This seals the inside of the container and suppresses the sublimation of moisture in the frozen food. At the same time, the aluminum radiation and the cold air from the long holes in the peripheral part are used to seal the container. Cool in container. However, the lid body made of aluminum has high thermal conductivity, so it is easily cooled by the cold air in the freezer compartment. Furthermore, although holes are provided in the peripheral portion, such holes cannot improve the temperature difference within the container. Based on this, the creator of this invention discovered that due to these problems, there may be frost on the central part of the container, frost on the container wall, or frost on the aluminum cover, and in order to solve this problem Topic, comes to mind that constitutes the subject of this disclosure. Therefore, the present disclosure is to provide a refrigerator that can suppress the drying of food in the freezer compartment container while suppressing frost formation in the freezer compartment container or on the upper surface.

Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed explanations than necessary may be omitted. For example, detailed descriptions of well-known matters may be omitted, or descriptions of substantially the same components may be repeated. In addition, the attached drawings and the following description are provided to allow those with ordinary knowledge in the technical field to fully understand the present disclosure, and are not intended to limit the subject matter described in the patent scope.

(Embodiment 1) Hereinafter, Embodiment 1 will be described using FIGS. 1 to 13 .

[1-1. Composition] [1-1-1. Composition of refrigerator] Fig. 1 is a longitudinal sectional view of the refrigerator in Embodiment 1. In the description of this specification, when describing the front, rear, and left sides of the refrigerator 1, the refrigerator 1 in FIG. 1 is used as a reference. That is, the left and right directions in FIG. 1 are described as directions corresponding to the front and rear of the refrigerator 1 . In addition, description will be made assuming that the front side of FIG. 1 corresponds to the left side of the refrigerator 1, and the inner side of FIG. 1 corresponds to the right side of the refrigerator 1. In addition, when the front of the refrigerator 1 is shown, it may be called the front. In addition, when the back side of the refrigerator 1 is shown, it may be called the back side.

In FIG. 1 , a refrigerator 1 has a heat insulating box 2 . The heat-insulating box 2 is composed of an outer box 3, an inner box 4, and a foamed heat insulation material 5. The outer box 3 is mainly made of steel plates, and the inner box 4 is made of ABS (Acrylonitrile Butadiene Styrene, Acrylonitrile Butadiene Styrene). Molded from a resin such as diene-styrene), the foamed heat insulating material 5 is filled in the space between the outer box 3 and the inner box 4 and foamed, such as rigid foamed polyurethane.

The heat-insulating box 2 is heat-insulated from the surroundings, and is divided into a plurality of storage rooms. The refrigerator compartment 6 is provided at the uppermost part of the heat insulating box 2 . Below the refrigerating chamber 6, the switching chamber 7 and the ice making chamber (not shown) are separated by a heat insulating wall and are arranged side by side in the left and right directions. A freezing chamber 9 is provided below the switching chamber 7 and the ice making chamber. A vegetable compartment 10 is provided below the freezing compartment 9 , that is, at the lowermost portion of the heat insulating box 2 .

The indoor temperature of the refrigerator compartment 6 is generally set to 1°C to 5°C. The switching chamber 7 sets the indoor temperature to -18°C to 5°C and can switch from the freezing temperature zone to the refrigeration temperature zone. Although the indoor temperature of the freezer compartment 9 is generally set to -22°C to -15°C, in order to improve the frozen storage state, it may be set to a low temperature of -30°C or -25°C. The vegetable compartment 10 is set to a temperature setting of 2°C to 7°C that is equal to or slightly higher than that of the refrigerator compartment 6 .

A hinged refrigerating compartment door 11 is provided in the front opening of the refrigerating compartment 6 so as to be openable and closable, and a gasket (not shown) is used to seal the space between the refrigerating compartment door 11 and the front opening. In addition, a pull-out switching chamber door 12 and a pull-out ice making chamber door (not shown) are provided at the front openings of the switching chamber 7 and the ice making chamber 8, and are secured by gaskets (not shown) seal. When the switching chamber door 12 is pulled forward, the switching chamber container portion 13 with an open upper surface is pulled out simultaneously.

Moreover, a pull-out freezing chamber door 14 is provided in the front opening of the freezing chamber 9, and the space between the freezing chamber door 14 and the front opening is sealed with a gasket (not shown) of the freezing chamber door 14. The freezing chamber 9 is configured as follows: an upper freezing chamber container portion 15 and a lower freezing chamber container portion 16 having two upper and lower layers with an upper surface opening. When the upper freezing chamber container portion 15 is placed on the lower freezing chamber container With the peripheral edge of the upper surface of the portion 16 open, the upper freezing chamber container portion 15 and the lower freezing chamber container portion 16 are pulled out in conjunction with the forward pulling action of the freezing chamber door 14 .

Moreover, a pull-out vegetable compartment door 17 is provided in the front opening of the lowermost vegetable compartment 10, and the space between the vegetable compartment door 17 and the front opening is sealed with a gasket (not shown) of the vegetable compartment door 17. The vegetable compartment 10 has a structure in which the vegetable compartment container portion 18 has an upper surface opening, and the vegetable compartment container portion 18 is pulled out in conjunction with the pull-out operation of the vegetable compartment door 17 .

FIG. 2 is a diagram showing the periphery of the freezing chamber 9 and the cooling chamber 19 in the first embodiment. A cooling chamber 19 for generating cool air is provided behind the freezing chamber 9 . A cooler (evaporator) 20 constituting a refrigeration cycle is disposed in the cooling chamber 19 . The compressor 23 (see FIG. 1 ) constituting the refrigeration cycle is arranged in the upper rear portion of the refrigerating compartment 6 . The compressor 23, a condenser (not shown), an expansion mechanism, and the cooler 20 are connected through refrigerant pipes, and constitute a refrigeration cycle. The refrigerant is discharged from the compressor 23 and circulates the refrigeration cycle to cool the refrigerant to a predetermined temperature, causing heat exchange between the cooler 20 and the internal space of the cooling chamber 19 to generate cold air inside the cooling chamber 19 .

A blower fan 21 is provided in the space above the cooler 20 (see FIG. 1 ). By the operation of the air supply fan 21, the heat-exchanged air of the cooler 20 is supplied to the refrigerator compartment 6, the switching compartment 7, the ice making compartment 8, the freezing compartment 9, and the vegetable compartment 10, and the amount of cold air supplied is adjusted to separate each compartment. The chamber cools down to a predetermined temperature.

As shown in FIG. 2 , a partition wall 25 is provided on the back side of the freezing chamber 9 to separate the freezing chamber 9 from the cooling chamber 19 . The partition wall 25 is formed with cool air blowing outlets 25a and 25b that communicate the cooling chamber 19 and the freezing chamber 9 . In this embodiment, the cold air blowing outlets 25a and 25b are formed as a pair in the upper and lower directions. The upper cold air outlet 25a is provided above the upper freezing chamber container portion 15 . The upper cool air outlet 25a is configured to blow cool air forward in a substantially horizontal direction. The upper cool air blowing outlet 25a is configured to blow out slightly downward. The upper cool air outlet 25a blows out cool air in a direction along the upper surface 40a of the upper surface cover 40 of the freezer container 30.

The lower cold air outlet 25b is provided below the upper freezing chamber container part 15 and above the lower freezing chamber container part 16. The lower cool air outlet 25b is configured to blow cool air forward and downward. The lower cool air outlet 25b blows cool air into the lower freezing chamber container portion 16 . A cold air return port 25c connected to the cooling chamber 19 is formed below the lower cold air outlet 25b. The cold air return port 25c is provided corresponding to the lower back surface of the lower freezing compartment container part 16.

[1-1-3. Structure of storage room container] FIG. 3 is a perspective view of the upper freezing chamber container part 15 and the lower freezing chamber container part 16 in Embodiment 1. Fig. 4 is a plan view of the upper freezer container portion 15 in Embodiment 1. Fig. 5 is a cross-sectional view taken along line V-V in Fig. 4 . The upper freezing chamber container part 15 is supported so that it can be pulled forward in the state mounted on the upper surface opening peripheral edge part of the lower freezing chamber container part 16 .

The upper freezing chamber container part 15 includes a freezing chamber container 30 which is an example of a storage chamber container, and an upper surface cover 40 that covers the upper side of the freezing chamber container 30 . In this embodiment, the freezer container 30 is formed of a transparent resin material. Accordingly, the inside of the lower freezing chamber container portion 16 can be confirmed through the freezing chamber container 30 . In addition, the upper surface cover 40 is formed of a transparent resin material. Accordingly, the inside of the freezer container 30 can be checked through the upper surface cover 40 .

The freezer container 30 is a box having a substantially rectangular parallelepiped appearance extending forward, backward, left and right. The freezer container 30 is open upward. Specifically, the freezer container 30 has a rectangular bottom wall 31 and a peripheral wall 32 around the bottom wall 31 . The surrounding wall 32 is composed of a front wall 32a, a rear wall 32b, a left wall 32c, and a right wall 32d. Partition portions 33 are formed at left and right central portions of the bottom wall 31 to partition the inside of the freezer container 30 to the left and right. The first accommodating part 34 and the second accommodating part 35 are formed in the freezing chamber container 30 by the partition part 33 .

The first accommodating portion 34 is opened upward through the first upper surface opening 34a. The second accommodating portion 35 is opened upward through the second upper surface opening 35a. In this embodiment, the storage capacities of the first accommodating part 34 and the second accommodating part 35 are set to be the same. The opening shapes of the first upper surface opening 34a and the second upper surface opening 35a are left and right symmetrical, and the opening areas are set to be the same. The upper surface opening 30a is formed by the first upper surface opening 34a and the second upper surface opening 35a. A metal frost plate 50 is detachably supported in each of the accommodating portions 34 and 35 . The frost plate 50 is arranged along the inner surface of the rear wall 32b located on the side of the cold air blowing outlets 25a and 25b. By causing the frost plate 50 to induce frosting of moisture inside the freezer container 30 and attaching and detaching the frost plate 50 , the frost in the freezer container 30 can be removed.

In the freezer container 30, a pair of flange portions 36 and 37 are formed across the upper surface opening 30a. In this embodiment, a pair of flange portions 36 and 37 are formed on the front and rear sides of the upper surface opening 30a. The front flange portion 36 is formed at a position corresponding to the front edge of the upper surface opening 30a. The front flange portion 36 protrudes forward with respect to the front wall 32 a of the surrounding wall 32 . The front flange portion 36 extends in the left-right direction between the left wall 32c and the right wall 32d. The front flange portion 36 is bent downward as it advances forward. An uneven anti-slip portion 36 a is formed on the lower surface of the front flange portion 36 . The lower part of the front flange part 36 can be used for the user to insert fingers. The user inserts his fingers into the front flange part 36 and pulls the anti-slip part 36a forward while pressing the fingers with his fingers, thereby pulling out the freezer container 30 to the front.

The rear flange portion 37 is formed at a position corresponding to the rear edge of the upper surface opening 30a. The rear flange portion 37 protrudes rearward with respect to the rear wall 32 b of the peripheral wall 32 . The rear flange portion 37 extends in the left-right direction between the left wall 32c and the right wall 32d. The rear flange portion 37 is formed with a groove 37a that is recessed upward. The groove 37a extends along the rear flange portion 37 .

The upper surface cover 40 is slidably supported on the front flange portion 36 and the rear flange portion 37 . The upper surface cover 40 is formed into a rectangular plate shape when viewed from a plan view. The upper surface cover 40 of this embodiment is formed in a rectangular plate shape corresponding to the size of the upper surface openings 34a and 35a and longer in the front-rear direction than in the left-right direction.

The upper surface cover 40 is provided with an opening area part 41 corresponding to the opening shape of the upper surface openings 34a and 35a. The opening area portion 41 is formed in a rectangular shape smaller than the upper surface openings 34a and 35a in a plan view. A plurality of opening holes 41 a penetrating in the thickness direction are uniformly formed in the opening area portion 41 . In this embodiment, the opening hole 41a is circular. Here, in this embodiment, the term "uniform" is used in the sense that opening holes 41a of the same shape are formed repeatedly in the front-rear direction and the left-right direction. In this embodiment, the arrangement opening holes 41a are arranged in a straight line from the front to the rear side of the freezer container 30 in the front, rear, left, and right directions. However, the arrangement openings 41a may be arranged in a staggered manner, for example. Formed uniformly.

In the opening area 41 , the opening ratio A, which is a ratio of the area of the portion where the opening hole 41 a is formed to the entire area of the opening area 41 , is 20% or more and 30% or less. A plurality of opening holes 41a are formed uniformly. In this embodiment, it is preferable that the size of the opening hole 41a is 3 mm or more and 5 mm or less in diameter. In addition, in the opening area portion 41 , the opening ratio A can also be said to be the ratio of the area of the portion where the opening hole 41 a is formed to the area of the portion where the opening hole 41 a is not formed to the area of the portion where the opening hole 41 a is formed. The ratio of the sum of areas.

A non-opening area 42 is formed on the outer peripheral side of the opening area 41 , and the non-opening area 42 has no opening hole 41 a formed therein. The non-opening area 42 has a rectangular annular shape in plan view. By having the non-opening area part 42, the strength of the upper surface cover 40 can be improved.

In particular, in this embodiment, a rib-shaped reinforcing portion 42a protruding upward with respect to the upper surface 40a is formed in the non-opening area portion 42 . A pair of reinforcing parts 42a is formed on the left and right sides of the opening area part 41. The reinforcing portion 42a corresponds to the length of the opening area portion 41 in the front-rear direction. With this configuration, the deflection of the upper surface cover 40 can be suppressed.

FIG. 6 is an enlarged view of FIG. 5 showing the periphery of the opening hole 41a in the first embodiment. The interface between the opening hole 41a and the upper surface 40a and the lower surface 40b of the upper surface cover 40 is chamfered. In other words, the diameter of the opening hole 41a increases upward at the upper end portion, and is smoothly connected to the upper surface 40a. Moreover, the opening hole 41a expands in diameter at the lower end part as it goes downward, and is smoothly connected to the lower surface 40b. Accordingly, the upper surface cover 40 does not have edges at the interface of the opening hole 41a, so that the resistance of the upper surface 40a and the lower surface 40b of the upper surface cover 40 is reduced.

In particular, the opening hole 41a of this embodiment is formed in a tapered shape whose diameter decreases as it goes upward from the lower end. Thereby, gas can easily pass through the opening hole 41a and move upward from the bottom of the upper surface cover 40. According to this, for example, even when outside air enters the freezing chamber container 30 when the freezing chamber door 14 is opened and closed, the outside air with a relatively high temperature can be drawn from the freezing chamber container 30 by the upward airflow. It naturally escapes above the upper surface cover 40 . Accordingly, it is possible to suppress frost from forming in the freezer compartment container 30 due to moisture contained in the outside air.

FIG. 7 is an enlarged view of FIG. 5 showing the periphery of the front flange portion 36 in the first embodiment. FIG. 8 is an enlarged view of FIG. 5 showing the periphery of the rear flange portion 37 in the first embodiment. A pair of curved support portions 43 and 44 are formed on the upper surface cover 40 corresponding to the pair of flange portions 36 and 37 of the freezer compartment container 30 . In this embodiment, a pair of curved support portions 43 and 44 are formed on the front and rear of the upper surface cover 40 . The bent support portions 43 and 44 are hooked on the respective flange portions 36 and 37 to be slidably supported in the freezer container 30 . Therefore, the upper surface cover 40 can be supported slidably along the upper surface opening 30a with a simple structure. In this embodiment, the upper surface cover 40 is supported so as to be slidable between a position covering the first accommodating part 34 and a position covering the second accommodating part 35 .

The front bending support portion 43 wraps around the front flange portion 36 from the outside and enters below the front flange portion 36 . Specifically, the front side bending support part 43 includes a base part 43a extending forward from the non-opening area part 42; a bending part 43b bending downward as it advances forward from the front end of the base part 43a; and a bending part 43c extending from the front end of the base part 43a. The lower end of the bent portion 43b is bent rearward. The base part 43a covers the front flange part 36 from above, the bending part 43b covers the front flange part 36 from the front, and the bending part 43c goes under the front flange part 36.

The rear bending support portion 44 wraps around the rear flange portion 37 from the outside and enters below the rear flange portion 37 . Specifically, the rear bending support portion 44 includes a base portion 44a extending rearward from the non-opening area portion 42; an extension portion 44b that bends downward from the rear end of the base portion 44a and extends; and a flexure portion 44c that extends from the rear end of the base portion 44a. The lower end of the outlet portion 44b is bent rearward. The base portion 44a covers the rear flange portion 37 from above, the protruding portion 44b covers the rear flange portion 37 from the rear, and the flexure portion 44c goes under the rear flange portion 37 . In the upper surface cover 40 , the front and rear curved support portions 43 and 44 enter under the respective flange portions 36 and 37 to restrict the upper surface cover 40 from being separated upward from the freezer container 30 .

In particular, the rear curved support portion 44 has a structure that wraps around the rear flange portion 37 from the outside and enters below the rear flange portion 37 . In addition, a groove 37a is also formed in the rear flange portion 37 . Therefore, the rear curved support portion 44 and the rear flange portion 37 form a so-called labyrinth structure. Accordingly, in the freezing compartment 9 (see FIG. 2 ), it is possible to suppress the cold air blown out from the cold air blowing ports 25 a and 25 b from passing through the rear side flange portion 37 of the freezing chamber container 30 and the rear side curved support portion of the upper surface cover 40 44, entering the freezer container 30. Furthermore, when the freezer compartment door 14 is opened, moisture from the outside air is less likely to enter, and in particular, frost or ice formation on the sliding surface between the rear flange portion 37 and the rear curved support portion 44 can be suppressed. , to maintain the operability of the upper surface cover 40.

Here, as shown in FIGS. 7 and 8 , in each of the front and rear flange portions 36 and 37 and the curved support portions 43 and 44 , one of the flange portions 36 and 37 and the curved support portions 43 and 44 is formed. There are protrusions 36b, 36c, 37b, 44d protruding toward the other.

In this embodiment, the front flange portion 36 is formed with protrusions 36 b and 36 c that protrude toward the upper cover 40 . Specifically, an upper protruding portion 36 b protruding upward is formed on the upper surface of the front flange portion 36 . A front protruding portion 36 c protruding forward is formed on the front surface of the front flange portion 36 . The protrusions 36b and 36c extend in a strip shape on the entire left and right sides of the freezer container 30 (see FIG. 4 ).

The rear flange portion 37 is formed with an upper protruding portion 37 b protruding toward the upper surface cover 40 . The upper protrusion 37b extends in a strip shape across the entire left and right sides of the freezer container 30 (see FIG. 4 ). Furthermore, in the upper cover 40 , a front protruding portion 44 d protruding toward the rear flange portion 37 is formed in front of the extended portion 44 b of the rear curved support portion 44 . The front protruding portion 44d is provided with circular protrusions at one position each on the left and right. The front protruding portion 44d may extend in a strip shape on the entire left and right sides of the rear curved support portion 44.

The mutual contact area between the flange portions 36 and 37 and the curved support portions 43 and 44 can be reduced by the upper protrusions 36b and 37b and the front protrusions 36c and 44d. Accordingly, the sliding resistance when the upper surface cover 40 slides relative to the freezer container 30 can be reduced.

FIG. 9 is a perspective view of the stopper 38 in the first embodiment. FIG. 10 is a side view when the stopper 38 in Embodiment 1 is moved to the restriction position. FIG. 11 is a side view when the stopper 38 in Embodiment 1 is moved to the release position. The rear flange portion 37 is provided with a stopper 38 that restricts the sliding movement of the upper surface cover 40 . In this embodiment, a pair of stoppers 38 is provided at both left and right ends of the rear flange portion 37 . Since the left and right stoppers 38 have the same structure, the description will be given with respect to the left stopper 38 .

The stopper 38 has a shape protruding rearward with respect to the rear flange portion 37 . Specifically, in the restricted position shown in FIG. 10 , the stopper 38 has a plate-shaped operating portion 38 a located behind the rear flange portion 37 . The operation part 38a is formed with a support part 38b extending forward. The support portion 38b is provided with a rotation hinge 38c having a rotation center in the left-right direction. The stopper 38 is rotatably supported on the rear wall 32b of the freezer container 30 by rotating the hinge 38c.

A claw portion 38d protruding forward is formed above the support portion 38b (see Fig. 11). The claw portion 38d is hooked on a hooking portion (not shown) provided in the freezer container 30. Thereby, the stopper 38 is maintained in the restricted position shown in FIG. 10 . The stopper 38 is configured to overlap the rear curved support portion 44 of the upper surface cover 40 in the restricted position when viewed from the side. Therefore, when the upper surface cover 40 slides along the rear side flange portion 37 , the rear side curved support portion 44 will abut against the stopper 38 to restrict the sliding movement of the upper surface cover 40 . Accordingly, the upper surface cover 40 can be restricted from being separated from the freezer container 30 .

Here, stopper avoidance portions 44e and 44f cut into an L shape in a plan view are formed on the left and right sides of the rear curved support portion 44 . The left and right stoppers 38 will respectively enter the stopper avoidance parts 44e and 44f, and the left and right ends of the rear curved support part 44 of the upper surface cover 40 will abut against the stoppers 38. Thereby, the upper surface cover 40 will be positioned above each of the accommodating parts 34 and 35 . That is, by abutting the upper surface cover 40 against the stopper 38, either the first accommodating part 34 or the second accommodating part 35 can be sealed with good accuracy, and the other one can be opened. . Accordingly, the accommodating portions 34 and 35 covered with the upper surface cover 40 and the accommodating portions 35 and 34 not covered with the upper surface cover 40 can be used with good accuracy.

When the stopper 38 is at the restriction position, the operating portion 38a, which is the radially outer end of the rotating hinge 38c, is pushed backward to release the engagement of the claw portion 38d and move the stopper 38 to the position shown in FIG. 11 Release position shown. In the release position, the stopper 38 is configured not to overlap with the rear curved support portion 44 of the upper surface cover 40 when viewed from the side, or not to substantially overlap. Accordingly, when the stopper 38 has moved to the release position, the rear curved support portion 44 of the upper surface cover 40 can pass over the stopper 38 to the outside in the left-right direction. Therefore, the upper surface cover 40 can be removed from the freezer container 30 . By removing the upper surface cover 40, the upper surface cover 40 can be cleaned or the like.

FIG. 12 is a diagram showing the relationship between deliciousness D, quality R, and opening ratio A in Embodiment 1. The upper part of FIG. 12 is a graph showing the relationship between the deliciousness D, the quality R, and the resistance coefficient K. In the upper part of FIG. 12 , the vertical axis on the left side shows the deliciousness D. The vertical axis on the right is display quality R. The horizontal axis shows the resistance coefficient K. The lower part of Figure 12 shows the opening ratio A corresponding to the resistance coefficient K. Here, quality R can be said to be dehumidification capability.

When the cold air passes through the opening hole 41a and enters from the upper side of the upper surface cover 40 to the lower side, a vortex will be generated near the lower surface 40b of the opening hole 41a due to the viscosity of the fluid. Therefore, it is difficult for cold air to enter deep inside the freezer compartment container 30 by an extent larger than the apparent size of the opening holes 41a (total of all opening holes 41a). That is, it was found that when the cold air flows along the upper surface cover 40, the pressure p1 on the upper surface (refer to FIG. 2) and the pressure p2 on the lower surface (refer to FIG. 2) are adjusted to express the difference, that is, the pressure loss. The resistance coefficient K (∝p1-p2) can achieve both the airtightness and ventilation of the interior of the freezer container 30, and can also take into account the deliciousness D and quality R.

Specifically, from the viewpoint of deliciousness D, it is important that the food is not dry. Therefore, from the viewpoint of the deliciousness D, it is desirable that the freezer compartment container 30 is in a sealed state, that is, it is desirable that the opening ratio A is as close to 0% as possible. From the sensory evaluation, it was found that as long as the resistance coefficient K is 7 or more and the opening ratio A is 30% or less, it is acceptable. If it exceeds 30%, the sensory evaluation grade will further deteriorate.

From the viewpoint of quality R, it is important to allow moisture that has entered the freezer container 30 to escape. Therefore, from the viewpoint of quality R, it is desirable that the freezer compartment container 30 is in an open state, that is, it is desirable that the opening ratio A is as close to 100% as possible. According to experiments, it has been found that as long as the resistance coefficient K is 20 or less and the opening ratio A is 20% or more, it is acceptable. From the above, it can be understood that in order to achieve a balance between the deliciousness D and the quality R, it is desirable that the opening ratio A be 20% or more and 30% or less.

[1-2. Action, etc.] Next, the operation of the refrigerator 1 in Embodiment 1 will be described. In this embodiment, the compressor 23 is driven to circulate the refrigerant in the refrigeration cycle, and the cooler 20 performs heat exchange with the internal space of the cooling chamber 19 to generate cold air. Furthermore, the blower fan 21 is driven, and the air that has been heat-exchanged by the cooler 20 is sent to the refrigerator compartment 6, the switching chamber 7, the ice making compartment 8, the freezing compartment 9, and the vegetable compartment 10 by the operation of the blast fan 21, and the air is adjusted. The amount of air-conditioning supplied will cool each room to a predetermined temperature.

At this time, as shown in FIG. 2 , in the freezing compartment 9 , cold air is blown out from the upper cold air blowout port 25 a along the upper surface of the upper surface cover 40 as indicated by arrow A1 . Moreover, the cold air is blown out from the lower side cold air blowing outlet 25b toward the downward direction of the freezing chamber container 30 as shown by arrow A2. The cold air that has cooled the freezing chamber 9 is returned to the cooling chamber 19 from the cold air return port 25c as shown by arrow A3. In this way, the cold air will be sent to the freezing chamber 9 to cool the freezing chamber 9 .

FIG. 13 is a diagram showing the results of the fluid analysis of the cold air around the upper freezer container portion 15 in Embodiment 1. In FIG. 13 , the opening hole 41 a of the upper surface cover 40 is partially omitted. In FIG. 13 , the fewer black dots are the portions where the speed V of the cool air is slower, and the more black dots are the portions where the speed V of the cool air is faster. It was confirmed that the cool air blown out from the upper cool air outlet 25a flows strongly along the upper surface 40a of the upper surface cover 40. However, it was confirmed that the flow of cold air along the lower surface 40b of the upper surface cover 40 is small.

This is because even if the cold air flowing along the upper cover 40 moves below the upper cover 40 through the opening hole 41a, vortices due to viscosity will be generated near the lower surface 40b of the upper cover 40. The vortex flows from the lower surface 40b of the nearby opening hole 41a toward the upper surface 40a side. According to this, since the cold air flows along the upper surface cover 40 in a state where it hardly penetrates deep inside the freezing chamber container 30, in this embodiment, it is possible to suppress temperature fluctuations in the freezing chamber container 30 and suppress Food dries out due to air conditioning. In addition, even if the cold air flows along the upper surface 40a of the upper surface cover 40 and a part of the cold air enters the inside of the container from the opening hole 41a, a vortex will be generated near the lower surface 40b, and the cold air that has entered the inside will flow from other parts of the container. The lower surface 40b of the opening hole 41a flows toward the upper surface 40a and flows out of the upper surface cover 40. Therefore, even if moisture enters the inside of the freezing chamber container 30 due to the storage of food in the freezing chamber container 30 or the opening of the freezing chamber door 14, the cold air flows in and out of the opening hole 41a due to the above-mentioned action. The air will flow to the outside of the upper surface cover 40 together with the cold air, so dehumidification can still be achieved. Even if the moisture turns into frost and forms frost on the upper surface cover 40, the above-mentioned effect allows the cold air to enter and exit the opening hole 41a, and the air can still be dehumidified. Promotes the sublimation of frost on the upper surface 40a or the lower surface 40b. Accordingly, the light transmittance of the upper surface cover 40 is less likely to be disturbed by frost, and visibility in the freezer container 30 becomes easier to maintain.

In addition, a gentle flow A4 of cool air can be confirmed on the rear wall 32b side of the freezing chamber container 30 which is close to the cool air blowing outlets 25a and 25b and is easily cooled. Although the vicinity of the rear wall 32b is close to the cool air blowing outlets 25a and 25b and is prone to frost formation, in this embodiment, dried cool air can easily enter the vicinity of the rear wall 32b, making frost caused by outside air or the like easy to sublime. .

In particular, in this embodiment, the frost plate 50 is detachably provided (see FIG. 5 ). By intentionally forming frost on the frost plate 50 and taking it out, the frost in the freezer container 30 can be easily removed.

In this embodiment, the upper surface cover 40 is configured to be slidable between a position covering the first accommodating portion 34 and a position covering the second accommodating portion 35 . Thereby, among the first accommodating part 34 and the second accommodating part 35, one can be used as the accommodating part 34, 35 into which cold air hardly flows in due to the upper surface cover 40, and the other one can be used as the cold air. The accommodating parts 35 and 34 are easy to use.

[1-3. Effects, etc.] As described above, in this embodiment, the refrigerator 1 is equipped with the freezing chamber 9, the upper cool air blowout port 25a which blows cold air into the freezing chamber 9, and the freezing chamber container 30 which has the upper surface opening 30a and is accommodated in the freezing chamber. 9; and the upper surface cover 40 covers the upper surface opening 30a of the freezer container 30, and the upper cold air blowing outlet 25a blows out the cold air along the upper surface 40a of the upper surface cover 40. The upper surface cover 40 has a structure corresponding to the upper surface opening 30a. The opening area portion 41 of the surface opening 30 a has an opening shape, and a plurality of opening holes 41 a are uniformly formed in the opening area portion 41 . With this configuration, the cold air flowing along the upper surface cover 40 will be difficult to enter the depth of the freezer compartment container 30 from the opening hole 41a of the upper surface cover 40 due to the vortex convection caused by the viscosity. The cool air that flows along the vicinity of the lower surface 40b of the upper surface cover 40 flows toward the upper surface 40a side from the lower surface 40b of the nearby opening hole 41a, and the moisture inside the container also flows together. Therefore, it is possible to suppress the food in the freezing chamber container 30 from drying out due to the cold air, to suppress the inside of the freezing chamber container 30 to be excessively cooled, and to suppress frost formation in the freezing chamber container 30 . Moreover, even if frost is formed on the upper surface 40a or the lower surface 40b of the upper surface cover 40, sublimation can be promoted by the cold air flowing near the upper surface 40a or the lower surface 40b. Therefore, it is possible to suppress frost formation on the inside of the freezing chamber container 30 or on the upper surface cover 40 while suppressing drying of the food in the freezing chamber container 30 . In addition, since the opening hole 41a is formed repeatedly in the front-rear direction and the left-right direction from the front side to the rear side of the freezer container 30, the cold air blown out from the cold air blowing outlets 25a, 25b is formed in the front-rear direction and the left-right direction. The cold air entering the freezer container 30 through the openings 41a repeatedly formed in the upper cover 40 will cause convection on the lower surface 40b of the upper cover 40, making it difficult to flow downward into the freezer container 30. , and the cold air convection on the lower surface 40b will pass through the openings 41a, and be induced by the cold air flow on the upper surface 40a, so that it can be easily guided to the upper surface 40a. Therefore, the cold air flow on the lower surface 40b of the upper surface cover 40 and the cold air flow on the upper surface 40a of the upper surface cover 40 can be merged and circulated outside the freezing chamber container 30, thereby suppressing drying in the freezing chamber container 30. , while suppressing frost formation on the freezer compartment container 30 or the upper surface cover 40 .

As shown in this embodiment, the upper cold air outlet 25a may be located above the upper surface cover 40. With this configuration, cold air can be blown above the upper surface cover 40 to effectively cool the inside of the freezer compartment 9 .

As shown in this embodiment, in the opening area 41 , the opening ratio A, which is a ratio of the area of the portion where the opening hole 41 a is formed to the entire area of the opening area 41 , may be 20% or more and 30% or less. With this configuration, it is possible to suppress frost formation on the inside of the freezing chamber container 30 or on the upper surface cover 40 while suppressing temperature fluctuations in the freezing chamber container 30 to suppress drying of food particularly efficiently.

As shown in this embodiment, the opening hole 41a may be formed in a circular shape. With this structure, a plurality of opening holes 41a can be formed uniformly with a simple structure.

As shown in this embodiment, the upper surface cover 40 may be supported so that it can slide in the freezer container 30 along the upper surface opening 30a. With this configuration, the upper surface cover 40 can be slid to open and close the upper surface opening 30a.

As shown in this embodiment, a pair of flange portions 36 and 37 may be formed on the freezer compartment container 30 across the upper surface opening 30a, and the upper surface cover 40 may be provided with a pair of flange portions 36 and 37 corresponding to the pair of flange portions 36 and 37. A pair of curved support portions 43 and 44 are formed, and the curved support portions 43 and 44 are hooked on the corresponding flange portions 36 and 37 so that the upper surface cover 40 is slidably supported. With this configuration, the upper surface cover 40 can be slid with a simple structure.

As shown in this embodiment, a pair of flange portions 36 and 37 may be provided as a pair apart in the blowing direction of the cool air from the upper cool air outlet 25a, and the upper cool air out of the pair of curved support portions 43 and 44 The rear curved support portion 44 on the air outlet 25a side wraps around the corresponding rear flange portion 37 from the outside and enters below the rear flange portion 37 . With this configuration, the rear curved support portion 44 is formed to wrap around the rear flange portion 37 from the outside and cover it on the side of the upper cool air outlet 25a. Therefore, the cool air blown out from the upper cool air outlet 25a can be suppressed. Passing between the upper surface cover 40 and the freezing chamber container 30 and entering the freezing chamber container 30 .

As shown in this embodiment, the side of the pair of curved support portions 43 and 44 that is far away from the upper cold air outlet 25a, that is, the front curved support portion 43, can also be wound around the corresponding front flange portion 36 from the outside and enter the front protrusion. below the edge 36. With this configuration, the upper surface cover 40 can be slidably supported by the pair of curved support portions 43 and 44 provided in the blowout direction.

As shown in this embodiment, the opening area 41 of the upper surface cover 40 may be made of a transparent material. With this configuration, even if the upper surface cover 40 is closed, the inside of the freezer compartment container 30 can still be checked through the upper surface cover 40 .

As shown in this embodiment, the freezing chamber container 30 made of resin and the frost plate (metal plate) 50 may be provided detachably on the back of the freezing chamber container 30 . With this configuration, frost can be induced to the frost plate 50 . Accordingly, by attaching and detaching the frost plate 50, the frost in the freezer container 30 can be removed.

(Other embodiments) In addition, Embodiment 1 is described as an example of the technology disclosed in this application. However, the technology in the present disclosure is not limited to this and may be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made.

In Embodiment 1, although the structure in which the upper side cool air outlet 25a is located above the upper surface cover 40 was demonstrated, it is not limited to this. The upper cool air outlet 25 a may be formed at a position that overlaps the upper cover 40 in the height direction, as long as at least a part of the upper cool air outlet 25 a is located above the upper cover 40 . With this configuration, cold air can be easily blown above the upper surface cover 40 and the inside of the freezer compartment 9 can be efficiently cooled.

In Embodiment 1, the structure in which the opening hole 41a is circular was demonstrated. However, the opening hole 41a may also be an ellipse or a rounded rectangle instead of a circle. By forming the opening hole 41a in a circular, oval, or rounded rectangular shape, cracking of the upper surface cover 40 in which the opening hole 41a is formed can be suppressed.

In Embodiment 1, the structure in which the opening hole 41a is circular was demonstrated. However, the opening hole 41a may also be rectangular instead of circular. For example, it can also be a corner hole with a side length of 3 mm to 5 mm. With this structure, a plurality of opening holes 41a can be formed uniformly with a simple structure.

In Embodiment 1, the structure in which the aperture ratio A is fixed as a whole in the opening area portion 41 has been described, but the configuration is not limited to this. For example, the plurality of opening holes may be uniformly formed so that the opening ratio of the area close to the cold air blowing outlets 25a, 25b is larger than the area far away from the cold air blowing outlets 25a, 25b. In addition, in this case, the uniformity of the plurality of opening holes in the area far away from the cold air blowing outlets 25a and 25b and the uniformity of the plurality of opening holes in the area close to the cold air blowing outlets 25a and 25b are different. That is, it is conceivable that, for example, the opening hole 41a in the area far away from the cold air blowing outlets 25a and 25b is made into a circle with a diameter of 3 mm, and the opening hole 41a in the area close to the cold air blowing outlets 25a, 25b is made into a circle with a diameter of 3 mm. 5mm round. With this configuration, part of the cold air can enter the freezing chamber container 30 from the area close to the cold air blowing outlets 25a, 25b, thereby easily suppressing frost formation on the back surface of the freezing chamber container 30 close to the cold air blowing outlets 25a, 25b.

In Embodiment 1, the structure in which the upper surface cover 40 is formed of resin of a transparent material, and the opening area|region part 41 is comprised with a transparent material was demonstrated. However, glass may be used instead. For example, the non-opening area part 42 may be formed of resin, and the upper surface cover 40 may be formed by inserting glass into the non-opening area part 42 .

In Embodiment 1, the pair of flange portions 36 and 37 are formed on the front and rear, but they may be formed on the left and right. That is, the upper surface cover 40 may be configured to slide in the front-to-back direction instead of the left-right direction. Specifically, the upper surface cover 40 of the first accommodating portion 34 of the freezer container 30 may be supported so as to be slidable in the front-rear direction on a pair of flange portions 36 and 37 . 37 is formed on the left wall 32c and the partition 33. Alternatively, a single upper surface cover 40 may be formed to cover the upper surfaces of the first accommodating part 34 and the second accommodating part 35, and a similar structure may be formed on the upper surface of the second accommodating part 35. The opening hole 41a forms a pair of flange portions 36 and 37 on the left wall 32c and the right wall 32d, allowing the upper surface cover 40 to slide forward and backward. In addition, although the upper surface cover 40 is provided as one piece as described above, it may be provided as two upper surface covers, and flanges for the first accommodating part 34 and the second accommodating part 35 may also be formed on the partition part 33 parts, the upper surface covers 40 of the first accommodating part 34 and the second accommodating part 35 can slide in the front-rear direction independently. In this case, in conjunction with the forward pulling action of the freezing chamber door 14, when the upper freezing chamber container part 15 and the lower freezing chamber container part 16 are pulled out, the upper surface can be moved by simply opening the stopper 38. The cover slides open and food can be taken out and put in.

(P.S.) The following technology has been disclosed through the description of the above embodiments.

(Technology 1) A refrigerator equipped with: a freezing chamber; a cold air blowing outlet for blowing cold air into the freezing chamber; a freezing chamber container having an upper surface opening and being accommodated in the freezing chamber; and an upper surface cover covering the aforementioned freezing chamber. The upper surface opening of the freezer compartment container, the cold air outlet blows out cold air along the upper surface of the upper surface cover, and the upper surface cover is provided with an opening area corresponding to the opening shape of the upper surface opening, in the aforementioned A plurality of opening holes are uniformly formed in the opening area portion. With this structure, the cold air flowing along the upper surface cover will be difficult to enter the depth of the freezer container from the opening hole of the upper surface cover due to the vortex convection caused by the viscosity. The cold air that flows near the lower surface of the cover escapes from the nearby holes toward the upper surface side of the upper surface cover. Therefore, it is possible to suppress the drying of the food in the freezing chamber container due to the cold air, to suppress the excessive cooling of the freezing chamber container, and to suppress frost formation in the freezing chamber container. Furthermore, even if frost forms on the upper surface or lower surface of the upper surface cover, sublimation can be promoted by the cold air flowing near the upper surface or lower surface. Therefore, while suppressing the drying of the food in the freezing chamber container, it is possible to suppress frost formation on the inside of the freezing chamber container or on the upper surface cover.

(Technology 2) The refrigerator according to Technology 1, wherein at least part of the cold air outlet is located above the upper surface cover. With this structure, cold air can be blown out above the upper surface cover, thereby efficiently cooling the freezer compartment.

(Technology 3) The refrigerator according to Technology 1 or 2, wherein in the opening region, an opening ratio, which is a ratio of the area of the portion where the opening hole is formed to the entire area of the opening region, is 20% or more. And less than 30%. With this configuration, it is possible to particularly efficiently suppress the drying of the food in the freezer container and the formation of frost on the interior of the freezer container or the upper surface cover.

(Technology 4) The refrigerator according to any one of Technologies 1 to 3, wherein the opening hole is formed in a circular shape, an elliptical shape, a rounded rectangle, or a rectangular shape. With this structure, a plurality of opening holes can be formed uniformly with a simple structure.

(Technology 5) The refrigerator according to any one of Techniques 1 to 4, wherein in the opening region, an opening ratio is a ratio of an area of a portion where the opening hole is formed to an entire area of the opening region. Yes: The area close to the cold air blowing outlet is larger than the area far away from the cold air blowing outlet. With this configuration, part of the cold air can easily enter the freezer compartment container from the area close to the cold air blowing outlet, and frost on the container wall surface close to the cold air blowing outlet can be easily sublimated. Accordingly, frost formation in the freezing container can be suppressed.

(Technology 6) The refrigerator according to any one of Techniques 1 to 5, wherein the upper surface cover is supported so as to be slidable on the freezer compartment container along the upper surface opening. With this configuration, the upper surface opening can be opened and closed by sliding the upper surface cover.

(Technology 7) The refrigerator according to Technique 6, wherein the freezer compartment container has a pair of flange portions sandwiching the upper surface opening, and the upper surface cover is formed corresponding to the pair of flange portions. There is a pair of curved support parts, and the curved support part is hooked on the corresponding flange part, thereby allowing the upper surface cover to be slidably supported. With this structure, the upper surface cover can be slid with a simple structure.

(Technology 8) The refrigerator according to Technique 7, wherein the pair of flange portions are provided as a pair apart in the blowing direction of the cool air from the cool air outlet, and the cool air between the pair of curved support portions The curved support portion on the blower outlet side wraps around the corresponding flange portion from the outside and enters below the corresponding flange portion. With this configuration, on the side of the cool air outlet, the curved support portion is formed to wrap around the flange portion of the freezer container from the outside and cover it. Therefore, it is possible to suppress the cold air blown out from the cool air outlet from passing through the upper surface cover and Between the freezer containers and into the freezer container.

(Technology 9) The refrigerator according to Technology 8, wherein the curved support portion of the pair of curved support portions that is far away from the cold air outlet side is wound around the corresponding flange portion from the outside and enters the corresponding flange portion. underneath. With this configuration, the upper surface cover can be slidably supported by a pair of curved support portions provided in the blowing direction.

(Technology 10) The refrigerator according to any one of Technologies 1 to 9, wherein the opening area of the upper surface cover is made of a transparent material. With this configuration, even if the upper surface cover is closed, the inside of the freezer compartment container can still be checked through the upper surface cover.

(Technology 11) The refrigerator according to any one of Techniques 1 to 10, which includes: the freezing chamber container made of resin; and a metal plate detachably provided on the back surface of the freezing chamber container. With this configuration, frost can be induced to the metal plate. Accordingly, by loading and unloading the metal plate, the frost in the freezer container can be removed. industrial availability

As described above, the refrigerator of the present disclosure can be suitably used in a refrigerator provided with a freezer container having an upper surface opening and an upper cover covering the upper surface opening of the freezer container.

1: Refrigerator 2: Heat insulation box 3: Outer box 4:Inner box 5: Foam insulation material 6: Refrigerator 7:Switch room 8:Ice room 9: Freezer 10:Vegetable room 11: Refrigerator door 12:Switch room door 13: Switching room container department 14: Freezer door 15: Upper freezer container part 16: Lower freezer container part 17:Vegetable room door 18: Vegetable room container department 19:Cooling room 20: Cooler (evaporator) 21:Air supply fan 23:Compressor 25:Partition wall 25a: Upper side air-conditioning outlet (air-conditioning outlet) 25b: Lower side air-conditioning outlet (air-conditioning outlet) 25c: Air conditioning return port 30: Freezer container 30a: Upper surface opening 31: Bottom wall 32: Surrounding wall 32a:Front wall 32b: back wall 32c: Left wall 32d:Right wall 33:Separation part 34: The first accommodation part (accommodation part) 34a: 1st upper surface opening (upper surface opening) 35: The second accommodation part (accommodation part) 35a: 2nd upper surface opening (upper surface opening) 36: Front flange part (flange part) 36a: Anti-slip part 36b: Upper protrusion (protrusion) 36c: Front protrusion (protrusion) 37: Rear side flange part (flange part) 37a: Groove 37b: Upper protrusion (protrusion) 38:Block 38a:Operation Department 38b: Support part 38c: Rotating hinge 38d:Claws 40: Upper surface cover 40a: Upper surface 40b: Lower surface 41: Opening area 41a: Open hole 42: Non-opening area 42a: Reinforcement Department 43: Front side bending support part (bending support part) 43a,44a: base 43b:Bending part 43c,44c: Flexion part 44: Rear side bending support part (bending support part) 44b:Protruding part 44d: Front protrusion (protrusion) 44e, 44f: Stopper avoidance part 50: Frosted plate (metal plate) A:Opening rate A1,A2,A3: arrow A4: flow D: Deliciousness K: resistance coefficient p1, p2: pressure R:Quality V: speed V-V: line

Fig. 1 is a longitudinal sectional view of the refrigerator in Embodiment 1. FIG. 2 is a diagram showing the periphery of the freezing chamber and the cooling chamber in Embodiment 1. FIG. 3 is a perspective view of the upper freezing chamber container part and the lower freezing chamber container part in Embodiment 1. FIG. 4 is a plan view of the upper freezer container part in Embodiment 1. FIG. Fig. 5 is a cross-sectional view taken along line V-V in Fig. 4 . FIG. 6 is an enlarged view of FIG. 5 showing the periphery of the opening hole in Embodiment 1. FIG. FIG. 7 is an enlarged view of FIG. 5 showing the periphery of the front flange portion in Embodiment 1. FIG. Fig. 8 is an enlarged view of Fig. 5 showing the periphery of the rear flange portion in the first embodiment. FIG. 9 is a perspective view of the stopper in Embodiment 1. FIG. Fig. 10 is a side view when the stopper in Embodiment 1 is moved to the restriction position. Fig. 11 is a side view when the stopper in Embodiment 1 is moved to the release position. FIG. 12 is a diagram showing the relationship between deliciousness D, quality R, and opening ratio A in Embodiment 1. FIG. 13 is a diagram showing the results of fluid analysis of cold air around the upper freezer container part in Embodiment 1. FIG.

9: Freezer

14: Freezer door

15: Upper freezer container part

16: Lower freezer container part

19:Cooling room

20: Cooler (evaporator)

25:Partition wall

25a: Upper side air-conditioning outlet (air-conditioning outlet)

25b: Lower side air-conditioning outlet (air-conditioning outlet)

25c: Air conditioning return port

30: Freezer container

31: Bottom wall

32a:Front wall

32b: back wall

36: Front flange part (flange part)

37: Rear side flange part (flange part)

40: Upper surface cover

40a: Upper surface

40b: Lower surface

41a: Open hole

43: Front side bending support part (bending support part)

44: Rear side bending support part (bending support part)

A1,A2,A3: arrow

p1, p2: pressure

Claims (21)

A refrigerator is provided with: a freezing chamber; a cold air outlet for blowing cold air into the freezing chamber; a freezing chamber container having an upper surface opening and being accommodated in the freezing chamber; and an upper surface cover made of a resin material to cover the freezing chamber. The aforementioned upper surface opening of the chamber container, The cold air outlet blows out cold air along the upper surface of the upper surface cover, The upper surface cover has an opening area corresponding to an opening shape of the upper surface opening, A plurality of opening holes are uniformly formed in the opening area, The opening hole is formed repeatedly in the front-rear direction and the left-right direction from the front side to the rear side of the freezing chamber container. The refrigerator according to claim 1, wherein the opening area is formed to be smaller than the upper surface opening. Such as the refrigerator of claim 1 or 2, wherein the opening hole is a circular hole with a diameter of 3 mm or more and 5 mm or less, or a corner hole of 3 mm or more and 5 mm or less. The refrigerator according to claim 1 or 2, wherein in the opening area, an opening ratio, which is a ratio of an area of a portion where the opening hole is formed to an entire area of the opening area, is 20% or more and 30% or less. Such as the refrigerator of claim 1 or 2, wherein the aforementioned opening hole is formed into a circle, an oval, a rounded rectangle, or a rectangle. The refrigerator of claim 1 or 2, wherein the upper surface cover is supported to be slidable in the freezer container along the upper surface opening. The refrigerator according to claim 6, wherein the freezer compartment container has a pair of flange portions sandwiching the upper surface opening, The upper surface cover has a pair of curved support portions corresponding to the pair of flange portions, The aforementioned curved support portion is hooked on the corresponding aforementioned flange portion, whereby the aforementioned upper surface cover is slidably supported. The refrigerator according to claim 7, wherein the pair of flange portions are provided as a pair apart in the blowing direction of the cold air from the cold air outlet, Among the pair of curved support portions, the curved support portion on the side of the cold air outlet is wound around the corresponding flange portion from the outside and enters below the corresponding flange portion. The refrigerator of claim 8, wherein the curved support portion of the pair of curved support portions away from the cold air outlet is wound around the corresponding flange portion from the outside and enters below the corresponding flange portion. The refrigerator of claim 1 or 2, wherein the opening area of the upper surface cover is made of transparent material. For example, the refrigerator of claim 1 or 2 has: The aforementioned freezer container formed of resin; and The metal plate is detachably provided on the back of the freezer container. A refrigerator is provided with: a freezing chamber; a cold air outlet for blowing cold air into the freezing chamber; a freezing chamber container having an upper surface opening and being accommodated in the freezing chamber; and an upper surface cover covering the freezing chamber container. The aforementioned opening on the upper surface, The cold air outlet blows out cold air along the upper surface of the upper surface cover, The upper surface cover has an opening area corresponding to an opening shape of the upper surface opening, A plurality of opening holes are formed in the opening area, In the opening area, an opening ratio, which is a ratio of the area of the portion where the opening hole is formed to the entire area of the opening area, is: an area closer to the cold air blowing outlet than an area far away from the cold air blowing outlet. The exit area is larger. Such as the refrigerator of claim 12, wherein the opening hole is a circular hole with a diameter of 3 mm or more and 5 mm or less, or a corner hole of 3 mm or more and 5 mm or less. The refrigerator according to claim 12 or 13, wherein in the opening area, an opening ratio, which is a ratio of an area of a portion where the opening hole is formed to an entire area of the opening area, is 20% or more and 30% or less. Such as the refrigerator of claim 12 or 13, wherein the aforementioned opening hole is formed into a circle, an oval, a rounded rectangle, or a rectangle. The refrigerator of claim 12 or 13, wherein the upper surface cover is supported to be slidable in the freezer container along the upper surface opening. The refrigerator according to claim 16, wherein the freezer compartment container has a pair of flange portions sandwiching the upper surface opening, The upper surface cover has a pair of curved support portions corresponding to the pair of flange portions, The aforementioned curved support portion is hooked on the corresponding aforementioned flange portion, whereby the aforementioned upper surface cover is slidably supported. The refrigerator of Claim 17, wherein the pair of flange portions are provided as a pair and are spaced apart in the blowing direction of the cold air from the cold air outlet, Among the pair of curved support portions, the curved support portion on the side of the cold air outlet is wound around the corresponding flange portion from the outside and enters below the corresponding flange portion. The refrigerator of claim 18, wherein the curved support portion of the pair of curved support portions away from the cold air outlet is wound around the corresponding flange portion from the outside and enters below the corresponding flange portion. The refrigerator of claim 12 or 13, wherein the opening area of the upper surface cover is made of transparent material. For example, the refrigerator of claim 12 or 13 has: The aforementioned freezer container formed of resin; and The metal plate is detachably provided on the back of the freezer container.

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