JP2024020693A - refrigerator - Google Patents

Abstract

An object of the present invention is to provide a refrigerator that can efficiently guide air blown by a blower fan into a storage room.
The refrigerator includes a storage chamber, a cooling chamber in which an evaporator is installed on the back side of the storage chamber, a partition section that partitions the storage chamber and the cooling chamber, and a partition section that partitions the storage chamber and the cooling chamber; a blower fan disposed on the back side of the partition, the partition is provided with a first duct that protrudes toward the storage chamber from a base surface of the partition; An air passage through which cold air blown from the blower fan flows is formed in the rotational axis direction of the blower fan, and a side opening is formed in the first duct portion to communicate the air passage with the storage chamber. has been done.
[Selection diagram] Figure 4

Description

The present disclosure relates to refrigerators.

Patent Document 1 describes a refrigerator main body having an outer box and an inner box, a refrigerating compartment provided in the upper part of the refrigerator main body, a vegetable compartment provided in the lower part of the refrigerator main body, and the vegetable compartment and the refrigerating compartment. a freezer compartment provided between the freezer compartment, a storage compartment back member provided on the back of the freezer compartment, a cooler cover provided at the rear of the storage compartment back member, and a cooler cover and the interior a cooler chamber provided between the box, a cooler provided within the cooler chamber, a defrosting heater provided below the cooler, and a defrost heater provided below the storage chamber back member; A refrigerator is disclosed that includes a freezer compartment return port that communicates a freezer compartment with the cooler compartment.

Japanese Patent Application Publication No. 2010-060188

The present disclosure provides a refrigerator that can efficiently guide air from a blower fan into a storage room.

The refrigerator according to the present disclosure includes a storage chamber, a cooling chamber in which an evaporator is installed on the back side of the storage chamber, and a partition section that partitions between the storage chamber and the cooling chamber; a blower fan disposed on the back side of the partition, the partition section is provided with a first duct section that protrudes toward the storage chamber from a base surface of the partition section, and the first duct section includes a blower fan disposed on the back side of the partition section; An air passage through which cold air blown from the blower fan flows is formed in the direction of the rotation axis of the blower fan, and a side opening is formed in the first duct portion to communicate the air passage with the storage chamber. ing.

In the refrigerator according to the present disclosure, by providing a side opening in the side surface of the first duct part, air blown in the direction of the rotation axis by the blower fan, which tends to create a swirling flow, can be efficiently flowed out from the air path of the first duct part. . Therefore, the air blown by the blower fan can be efficiently guided into the storage room.

Vertical cross-sectional view of the refrigerator in Embodiment 1 Rear view showing the cooling chamber and duct in Embodiment 1 A rear view of the blower fan portion of the partition in Embodiment 1, seen from the cooling chamber side. Vertical cross-sectional view of the partition section in Embodiment 1 An exploded perspective view of the partition section in Embodiment 1 seen from the freezer compartment side An exploded perspective view of the partition section in Embodiment 1 seen from the cooling chamber side Front view of the first partition plate of the partition section in Embodiment 1 A perspective view of the molded heat insulating material of the partition section in Embodiment 1 seen from the front side. A perspective view of the molded heat insulating material of the partition section in Embodiment 1 seen from the back. Rear view of the molded heat insulating material of the partition in Embodiment 1 Front view of the partition section in Embodiment 1

(Findings, etc. that formed the basis of this disclosure)
At the time the inventors came up with the present disclosure, the inventors had a refrigerator compartment, a vegetable compartment, and a freezer compartment, each of which was connected to a cooler compartment by a duct, and the cold air generated from the cooler compartment was There was a technology that sent food to the refrigerator, vegetable room, and freezer.

In conventional technology, the blower fan in a refrigerator is generally an axial fan, but a blower fan is used as a refrigerator fan because it has the advantage of being able to easily obtain higher static pressure than an axial fan of the same size. In some cases.
However, with an axial fan, air tends to be blown uniformly in the direction of the rotation axis, whereas with a blower fan, air tends to be blown in the direction of the rotation axis as a flow that rotates around the rotation axis, a so-called swirling flow. . For this reason, the inventors discovered that when using a blower fan, it is inefficient to apply the same air path structure as an axial fan to blow air into the storage room, and to solve this problem. This has led to the subject matter of the present disclosure.
Therefore, the present disclosure provides a refrigerator that can efficiently guide air blown by a blower fan into a storage room.

Hereinafter, embodiments will be described in detail with reference to the drawings. However, more detailed explanation than necessary may be omitted. For example, detailed explanations of well-known matters or redundant explanations of substantially the same configurations may be omitted.
The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter recited in the claims.

(Embodiment 1)
Embodiment 1 will be described below using FIGS. 1 to 11.
[1-1. composition]
[1-1-1. Refrigerator configuration]
FIG. 1 is a longitudinal sectional view of a refrigerator in Embodiment 1. FIG. 2 is a rear view showing the cooling chamber and duct in the first embodiment. FIG. 3 is a rear view of the blower fan portion of the partition in Embodiment 1, viewed from the cooling chamber side. FIG. 4 is a longitudinal cross-sectional view of the partition portion in the first embodiment. FIG. 5 is an exploded perspective view of the partition section in Embodiment 1, viewed from the freezer compartment side. FIG. 6 is an exploded perspective view of the partition section in Embodiment 1, viewed from the cooling chamber side.
In the description of this specification, when the refrigerator 10 is referred to as front, rear, left or right, FIGS. 1 and 2 are used as a reference. That is, the left and right sides of FIG. 1 will be described as corresponding to the front and rear of the refrigerator 10. Further, the left and right sides in FIG. 2 will be described as corresponding to the left and right sides of the refrigerator 10. Note that when referring to the front of the refrigerator 10, the term "front" may be used. Furthermore, when referring to the rear surface of the refrigerator 10, the term "back surface" may be used.

As shown in FIG. 1, the refrigerator 10 includes a box-shaped housing 11 with an open front. A refrigerator compartment 12 of about 2°C to 4°C is formed above the casing 11 as a second storage compartment, and a freezing compartment 13 of about -18°C as a first storage compartment is formed below the casing 11. is formed. Between the refrigerator compartment 12 and the freezer compartment 13, a low temperature chamber 60 with a temperature of about -5° C. to about 1° C. is formed as a third storage room.

In the refrigerator 10, a side-opening door 14 is provided at the front opening of the refrigerator compartment 12 so as to be openable and closable. A side-opening door 61 is provided at the front opening of the freezer compartment 13 so as to be openable and closable, and multiple drawer cases 15, 16, and 17 for storing food are provided inside. Further, a drawer-type door 62 is provided at the front opening of the cold room 60 so as to be freely openable and closable, and a drawer case 63 is provided which interlocks with the opening and closing of the drawer-type door 62.

As shown in FIGS. 1 and 2, a cooling chamber 20 is provided on the back side of the freezing chamber 13 of the refrigerator 10. A duct 21 that is located on the back side of the refrigerator compartment 12 and communicates in the vertical direction is connected above the cooling compartment 20 .
The duct 21 is provided with a refrigerating outlet (not shown) that communicates with the refrigerating chamber 12 .
A heat insulating wall 64 is provided between the freezing chamber 13 and the low temperature chamber 60. A cold air passage 64a that communicates between the cooling chamber 20 and the duct 21 is formed in the heat insulating wall 64. Thereby, the configuration is such that the cold air generated in the cooling chamber 20 is introduced into the duct 21 via the cold air passage 64a.

The cold air passage 64a is provided with a twin damper 65 that adjusts the amount of cold air flowing into the refrigerator compartment 12 and the cold room 60.
As shown in FIG. 2, the twin damper 65 includes a cold chamber damper 65a as a third storage chamber damper and a refrigerator chamber damper 65b as a first storage chamber damper, which are arranged adjacent to each other in the left and right width direction of the refrigerator 10. There is. The cold room damper 65a and the cold room damper 65b are controlled according to the indoor temperatures of the cold room 60 and the cold room 12, respectively, and open and close the dampers independently. Adjust the amount of cold air.

As shown in FIG. 1, the freezing chamber 13 and the cooling chamber 20 are separated by a thick plate-shaped partition 29. The partition part 29 has a first partition plate 30 arranged on the front side of the cooling chamber 20. Furthermore, the partition section 29 includes a second partition plate 40 arranged on the back side of the freezer compartment 13. A cold air passage 29a is formed between the first partition plate 30 and the second partition plate 40.
An inclined surface 35 is formed on the upper part of the first partition plate 30 and is inclined upwardly away from the second partition plate 40 . A blower fan 26 is attached to the back side of the inclined surface 35.

The blower fan 26 is a fan classified as one type of blower fan. Axial fans also exist as blower fans. Generally, an axial fan has a rotary blade attached to the center of a frame, sucks air from one end of the rotary blade in the direction of the rotation axis, and blows air out to the other end of the blade in the direction of the rotation axis. Traditional refrigerators often use axial fans to circulate cold air.

On the other hand, the blower fan 26 includes rotating blades 27 and a fan casing 28 that covers the rotating blades 27, sucks air from the direction of the rotation axis of the rotating blades 27, and sucks air from the radial direction of the rotating blades 27 (in this embodiment, , corresponding to the upper part in FIG. The fan casing 28 is formed into a casing shaped along an involute curve based on the rotation center C1 of the rotating blade 27, and is formed into a substantially spiral casing. Note that in the following description, the rotation center C1 may be referred to as the rotation axis direction C1.

As shown in FIG. 3, the fan casing 28 is formed in a substantially spiral shape whose distance from the rotation center C1 gradually increases in the clockwise direction. A cold air intake port 28a for taking in cold air from the cooling chamber 20 into the fan casing 28 is formed in a central portion of the fan casing 28 facing the rotation center C1 of the blower fan 26. A second opening 28b is formed at the top of the fan casing 28 and communicates with the lower end of the cold air passage 64a. The fan casing 28 is provided with a connecting portion 28c that expands from the top toward both left and right sides of the fan casing 28 and is connected to the cold air passage 64a via a second opening 28b.

The wind flowing in the radial direction from the rotation center C1 due to the rotation of the rotary blade 27 flows along the inner surface of the fan casing 28, so that the openings provided on the sides of the fan casing 28, that is, in the radial direction (this embodiment The wind blows out from the second opening 28b (corresponding to the second opening 28b provided above).
Generally, the blower fan 26 tends to achieve higher static pressure than an axial fan of comparable size. Further, since the number of rotating blades 27 of the blower fan 26 is generally greater than the number of rotating blades of an axial fan, this also makes it easier to obtain a high static pressure.

As shown in FIGS. 1 and 2, an evaporator 22 is installed below the blower fan 26 in the cooling chamber 20. As shown in FIGS. A compressor 23 is arranged at the rear upper part of the refrigerator compartment 12. The compressor 23, a condenser (not shown), an expansion mechanism, and the evaporator 22 are connected by refrigerant piping, and constitute a refrigeration cycle.
Then, by discharging the refrigerant from the compressor 23, the refrigerant is cooled to a predetermined temperature, and by exchanging heat with the evaporator 22 and the internal air of the cooling chamber 20, cold air is generated inside the cooling chamber 20. It is configured as follows.

Here, by rotationally driving the rotary blade 27, the cold air in the cooling chamber 20 is sucked into the blower fan 26 from the cold air intake 28a of the fan casing 28, and is blown out from the outer periphery of the blower fan 26 into the inside of the fan casing 28. Ru. The cold air blown into the fan casing 28 is guided along the inner circumferential surface of the fan casing 28 and sent to the duct 21 from the second opening 28b through the cold air passage 64a.

[1-1-2. Structure of partition section]
FIG. 7 is a front view of the first partition plate 30 of the partition section 29 in the first embodiment.
The first partition plate 30 of the partition section 29 has a substantially rectangular base section 31 . A partition wall portion 31a that projects rearward is formed at the left end portion of the base portion 31. The partition wall portion 31a extends in the vertical direction. A partition wall 51a (see FIGS. 5 and 6) of a molded heat insulating material 50 is attached to the partition wall portion 31a.

A fan plate portion 32 protruding forward in a pedestal shape is formed at a position of the base portion 31 corresponding to the fan casing 28 . The fan plate portion 32 is formed into a substantially rectangular shape with rounded corners when viewed from the front. In other words, the fan plate portion 32 has a substantially rounded rectangular shape when viewed from the front. The fan plate portion 32 has a substantially rounded rectangular shape with the left and right sides longer than the top and bottom. A planar cutout portion 32a is formed in the lower part of the fan plate portion 32. A rearwardly recessed recess 33 is formed on the front surface (seat surface) of the fan plate portion 32 . The recess 33 includes an inclined surface 35 corresponding to the bottom surface of the recess 33 and a peripheral wall 34 corresponding to the side surface of the recess 33 . The surrounding wall 34 connects the periphery of the inclined surface 35 and the front surface of the fan plate section 32.

A circular fan mounting portion 36 is formed on the inclined surface 35 . A plurality of fan support parts 36a, 36b, and 36c are formed around the fan attachment part 36. The fan support portions 36a to 36c are formed at approximately equal intervals in the circumferential direction. In this embodiment, the fan support parts 36a to 36c are formed at three locations: above the fan mounting part 36, at the lower left, and at the lower right. The fan support portions 36a to 36c are formed as concave portions recessed forward from the back surface (see FIG. 6). A mounting portion of a fan frame (not shown), which rotatably supports the rotary blade 27, is fixed to each of the fan support portions 36a to 36c with screws (not shown). A rotating blade 27 is rotatably supported by a fan frame (not shown).

On the outer peripheral side of the fan mounting portion 36, a substantially arc-shaped first opening 38 along the fan casing 28 is formed between each of the fan supports 36a, 36b, and 36c. The first opening 38 is formed in the inclined surface 35. In this embodiment, three first openings 38 are formed. The three first openings 38 are defined as an upstream first opening 38a, a midstream first opening 38b, and a downstream first opening 38c, respectively, from the upstream side of the airflow by the blower fan 26 with the top as a reference. ing.

The opening areas of the first upstream opening 38a, the first midstream opening 38b, and the first downstream opening 38c are formed such that the opening width gradually increases from the upstream side to the downstream side of the airflow. ing. Further, the opening areas of the first upstream opening 38a, the first midstream opening 38b, and the first downstream opening 38c are formed to increase sequentially from the upstream side.
Thereby, the air volume to the freezer compartment 13 can be ensured, and cooling can be performed efficiently. Note that, as long as the air volume can be ensured, a configuration may be adopted in which at least only the first opening 38a on the upstream side gradually becomes larger.

Since the blower fan 26 is attached to the inclined surface 35 of the first partition plate 30, the rotation center C1 of the blower fan 26 is arranged to be inclined with respect to the front-rear direction (see FIG. 4). As a result, the blower fan 26 blows the cool air upward from the first opening 38, making it easier to cause convection of the cool air.

A rectangular plate-shaped heat insulating material 39 is arranged below the fan plate section 32 . The heat insulating material 39 insulates the cold air transmitted from the cooling chamber 20 to the first partition plate 30. Thereby, it is possible to suppress the condensed water flowing down from the recess 33 from freezing.

As shown in FIGS. 4 to 6, a second partition plate 40 is arranged in front of the first partition plate 30. As shown in FIGS. A molded heat insulating material 50 made of, for example, expanded polystyrene is provided in close contact with the second partition plate 40 . The second partition plate 40 and the molded heat insulating material 50 have shapes corresponding to each other.

FIG. 8 is a perspective view of the molded heat insulating material 50 of the partition portion 29 in the first embodiment, viewed from the front side. FIG. 9 is a perspective view of the molded heat insulating material 50 of the partition portion 29 in the first embodiment, viewed from the back. FIG. 10 is a rear view of the molded heat insulating material 50 of the partition portion 29 in the first embodiment. Note that in FIG. 10, the fan plate portion 32 is shown with grid-like hatching for convenience of explanation.

The molded heat insulating material 50 has a plate-shaped base portion 51 that is thick in the front-rear direction. The base portion 51 is formed into a substantially rectangular shape when viewed from the front. The base portion 51 is formed with a duct portion 52 that protrudes from the front surface of the base portion 51 toward the freezer compartment 13 side. A duct space 52s (see FIG. 9) is formed in the duct portion 52 and is recessed toward the freezer compartment 13 side with respect to the rear surface of the base portion 51. A cold air passage 29a (see FIG. 4) is formed by the duct space 52s surrounded by the duct portion 52 and the first partition plate 30.

The duct portion 52 has a middle duct portion 53 at a position corresponding to the fan plate portion 32 of the first partition plate 30.
When viewed from the front, the middle duct portion 53 includes a front surface 53a having a rounded rectangular shape, side surfaces 53b and 53c provided on the left and right sides of the front surface 53a and extending in the vertical direction, and a lower surface provided below the front surface 53a and extending in the left-right direction. 53d, and curved side surfaces 53e and 53f that connect between the side surfaces 53b and 53c and the lower surface 53d. The curved side surfaces 53e and 53f curve inward in the left-right direction as they move downward.

A middle duct space (air path) 53s (see FIG. 9) forming a part of the duct space 52s is formed in the middle duct portion 53. The middle duct space 53s has an inner peripheral shape corresponding to the outer peripheral shape of the fan plate portion 32, as shown in FIG. That is, the fan plate portion 32 can be fitted into the middle duct space 53s. The middle duct space 53s is formed in the rotation axis direction C1 of the blower fan 26. That is, the middle duct space 53s is provided on an extension of the rotation center C1 of the blower fan 26.

Front openings 53a1, 53a2, and 53a3 penetrating in the thickness direction are formed in the front surface 53a of the middle duct portion 53.
Specifically, a center front opening 53a1 extending in the left-right direction along the lower surface 53d is formed in the lower part of the front surface 53a. The center front opening 53a1 curves upward along the curved side surfaces 53e and 53f at both left and right ends.
Furthermore, side front openings 53a2 and 53a3 extending along side surfaces 53b and 53c are formed at both left and right ends of the front surface 53a. Both left and right ends of the center front opening 53a1 are located below the side front openings 53a2 and 53a3.

Side openings 53b1 and 53c1 penetrating in the thickness direction are formed in side surfaces 53b and 53c of the middle duct portion 53.
Specifically, side openings 53b1 and 53c1 that extend in the vertical direction along the side surfaces 53b and 53c are formed in the side surfaces 53b and 53c. The lower ends of the side openings 53b1 and 53c1 extend to the curved side surfaces 53e and 53f, and are curved along the curved side surfaces 53e and 53f. Therefore, the side openings 53b1 and 53c1 open in the left-right direction (side surface direction) and in the downward direction.

Cold air is sent from the cold air passage 29a to the freezer compartment 13 through the front openings 53a1 to 53a3 and the side openings 53b1 and 53c1. That is, cold air is sent forward through the front openings 53a1 to 53a3. Further, cold air is sent from the cold air passage 29a to the left and right and downward through the side openings 53b1 and 53c1.

A top duct portion 54 is formed above the middle duct portion 53 and extends in the left-right direction. The top duct part 54 is formed so that the amount of protrusion from the front surface of the base part 51 is smaller than that of the middle duct part 53. The top duct portion 54 is formed to have a larger horizontal width than the middle duct portion 53. A top duct space 54s forming a part of the duct space 52s is formed in the top duct portion 54. The top duct space 54s extends left and right upward from the upper end on both the left and right sides of the middle duct space 53s.

On the front surface of the top duct portion 54, top openings 54a and 54b are formed at both left and right end portions to penetrate in the thickness direction. Cool air is sent forward from the top duct space 54s through the top openings 54a and 54b.

A lower duct portion (second duct portion) 55 is formed below the middle duct portion 53 and extends downward from the left and right center of the middle duct portion 53 . The lower duct portion 55 is formed so that the amount of protrusion from the front surface of the base portion 51 is smaller than that of the middle duct portion 53.
The lower duct portion 55 has a front surface 55a, side surfaces 55b and 55c provided on the left and right sides of the front surface 55a and extending in the vertical direction, and curved side surfaces 55e and 55f extending downward from the lower ends of the side surfaces 55b and 55c. The curved side surfaces 55e and 55f curve outward in the left-right direction as they move downward.

The lower duct portion 55 is formed with a connecting duct space (connecting air path) 55s that forms a part of the duct space 52s. The connecting duct space 55s extends in the vertical direction. The connecting duct space 55s has, at its lower end, a connecting portion 55s1 that curves outward in the left-right direction as it moves downward, corresponding to the curved side surfaces 55e and 55f. The connecting duct space 55s is formed according to the lower surface 53d (see FIG. 8), and has a larger opening width than the top duct space 54s. Cold air easily flows into the connecting duct space 55s from the middle duct space 53s.

A bottom duct portion (third duct portion) 56 is formed below the lower duct portion 55 and extends from side to side. The bottom duct portion 56 has a longer horizontal width than the middle duct portion 53, and a smaller horizontal width than the top duct portion 54. The bottom duct portion 56 is formed to have the same protrusion amount from the front surface of the base portion 51 as the lower duct portion 55 . Upper surfaces 56b and 56c of the bottom duct portion 56 are smoothly connected to side surfaces 55b and 55c of the lower duct portion 55 via curved side surfaces 55e and 55f.

A bottom duct space 56s forming a part of the duct space 52s is formed in the bottom duct portion 56. The bottom duct space 56s communicates with the connecting duct space 55s at the left and right center portions. The bottom duct space 56s extends in the left-right direction from the connection duct space 55s. The bottom duct space 56s is smoothly curved and connected to the connecting duct space 55s by a connecting portion 55s1.

A bottom opening 56a extending in the left-right direction is formed in the bottom duct portion 56. The bottom opening 56a is formed on the entire front surface of the bottom duct portion 56. The bottom opening 56a has a larger horizontal width than the connecting duct space 55s. The bottom opening 56a is longer than the center front opening 53a1 in the left and right directions.

As shown in FIGS. 5 and 6, the second partition plate 40 is arranged in front of the molded heat insulating material 50. As shown in FIG. The second partition plate 40 is formed in a cover shape corresponding to the molded heat insulating material 50. The second partition plate 40 has a shape corresponding to the shaped heat insulating material 50.
The duct portion 42 of the second partition plate 40 is formed in the same shape as the duct portion 52 of the molded heat insulating material 50, except that the side openings 43b1, 43b2, 43c1, and 43c2 are divided into two vertically.

To explain the specific correspondence in detail, the second partition plate 40 includes the base portion 51 of the molded heat insulating material 50, the duct portion 52, the duct space 52s, the middle duct portion 53, the front surface 53a, the side surfaces 53b, 53c, the lower surface 53d, Curved side surfaces 53e, 53f, middle duct space 53s, front openings 53a1, 53a2, 53a3, top duct section 54, top duct space 54s, top openings 54a, 54b, lower duct section 55, front surface 55a, side surfaces 55b, 55c, curved side surface 55e , 55f, the connecting duct space 55s, the bottom duct part 56, the bottom duct space 56s, the bottom opening 56a, the top surfaces 56b and 56c, the base part 41, the duct part 42, the duct space 42s, the middle duct part (first duct part) 43, front surface 43a, side surfaces 43b, 43c, lower surface 43d, curved side surfaces 43e, 43f, middle duct space 43s, front openings 43a1, 43a2, 43a3, top duct section 44, top duct space 44s, top openings 44a, 44b, Lower duct part (second duct part) 45, front face 45a, side faces 45b, 45c, curved side faces 45e, 45f, connecting duct space 45s, bottom duct part (third duct part) 46, bottom duct space 46s, bottom opening (lower front It has an opening) 46a and upper surfaces 46b and 46c.
Further, the second partition plate 40 has side openings 43b1, 43b2, 43c1, and 43c2 divided into two vertically, corresponding to the side openings 53b1, 53c1 of the molded heat insulating material 50.

In the partition portion 29, the base portion 51 of the molded heat insulating material 50 is attached to the base portion 41 of the second partition plate 40 so as to be in close contact with the base portion 41 of the second partition plate 40. In other words, the duct portion 52 of the molded heat insulating material 50 is fitted into the duct space 42s of the second partition plate 40. Thereby, the duct space 52s of the molded heat insulating material 50 is divided into the openings 53a1 to 53a3, 53b1, 53c1, 54a, 54b, 56a of the molded heat insulating material 50 and the openings 43a1 to 43a3, 43b1, 43b2, 43c1 of the second partition plate 40, It communicates with the freezer compartment 13 through 43c2, 44a, 44b, and 46a.

Further, the base portion 31 of the first partition plate 30 is attached to the base portion 51 of the molded heat insulating material 50 so as to be in close contact therewith. Thereby, the cold air passage 29a is formed by the duct space 52s surrounded by the inner surface of the duct portion 52 and the front surface of the first partition plate 30.

At this time, the fan plate portion 32 of the first partition plate 30 enters the middle duct space 53s so as to raise the bottom of the middle duct space 53s. Since the blower fan 26 can be placed close to the freezing compartment 13 by the fan plate portion 32, air can be blown in the front direction into the freezing compartment 13 with less air resistance.

Here, the fan plate portion 32 is located behind the side openings 53b1, 53c1, and 43b1 to 43c2. Therefore, the fan plate portion 32 does not reduce the opening area of the side openings 53b1, 53c1, 43b1 to 43c2. Further, the front surface of the fan plate portion 32 is shaped like a pedestal and is formed wide. Therefore, when the width of the front surface is small, for example, compared to when the front surface has an elongated rib shape, the cold air blown from the recess 33 is less likely to meander when trying to cross the fan plate section 32 in the radial direction. ing. Therefore, the pressure loss of cold air is easily suppressed.

A shutter 70 is arranged in the middle duct space 53s. The shutter 70 has a teardrop shape when viewed from the front. The shutter 70 is fixed to a shaft 71 that extends forward. The shaft 71 passes through the molded heat insulating material 50 and the second partition plate 40 and is rotatably supported. An operating knob 72 is fixed to the front end of the shaft 71. By rotating the operation knob 72, the shutter 70 is rotated.

FIG. 11 is a front view of the partition portion 29 in the first embodiment.
As shown in FIG. 11, when viewed from the front, the center front opening 43a1 and the first midstream opening 38b overlap. That is, the lower end of the midstream side first opening 38b is exposed from the center front opening 43a1. Further, in a front view, the right side front opening 43a3 and the downstream first opening 38c overlap. That is, the first downstream opening 38c is exposed from the right side front opening 43a2. Note that the left side front opening 43a2 and the first upstream opening 38a do not substantially overlap.

Here, by rotating the operation knob 72, the shutter 70 rotates around the shaft 71, and overlaps the front openings 43a1 and 43a2 and the side openings 43b1 and 43b2 in a front view and a side view. Thereby, by changing the opening areas of the front openings 43a1, 43a2 and the side openings 43b1, 43b2, it is possible to change the amount of cold air flowing out from the middle duct space 53s.

[1-2. Operation, etc.]
Next, the operation of the refrigerator 10 in the first embodiment will be explained.
In this embodiment, the compressor 23 is driven to circulate refrigerant in the refrigerant circuit, and the evaporator 22 exchanges heat with the internal air of the cooling chamber 20 to generate cold air.
Then, by driving the blower fan 26, as shown by arrow A1 in FIG.

A part of the cold air blown into the fan casing 28 is blown toward the duct 21 from the second opening 28b on the side of the fan casing 28, as shown by arrow A2, and the air volume is controlled by the twin damper 65. Air is blown to cool the refrigerator compartment 12 and the cold room 60.

Further, a part of the cold air blown into the fan casing 28 is blown from the first opening 38 to the middle duct space 53s in the rotation axis direction C1 of the blower fan 26, as shown by arrow A3.

A part of the cold air blown into the middle duct space 53s is blown into the freezer compartment 13 from the middle duct space 53s through the front openings 43a1 to 43a3, as shown by arrow A4.
In addition, a part of the cold air blown into the middle duct space 53s is blown into the freezer compartment 13 from the middle duct space 53s through side openings 43b1 to 43c2, as shown by arrows A5 and A6 (see FIGS. 1 and 11). be done.

In addition, when a part of the cold air blown into the middle duct space 53s is blown from the middle duct space 53s to the top duct space 54s, it is frozen through the top openings 54a and 54b from the top duct space 54s, as shown by arrow A7. Air is blown into the chamber 13.

Further, when a part of the cold air blown into the middle duct space 53s is blown into the connecting duct space 55s, it spreads in the left and right direction when entering the bottom duct space 56s, and as shown by arrow A8, it spreads in the left and right direction, and as shown by arrow A8, the cold air is blown into the connecting duct space 55s. Air is blown into the freezer compartment 13 from the entire area.
The cold air that has cooled the freezer compartment 13 returns to the cooling compartment 20 from the return port 20a, as shown by arrow A9.
In this way, cold air is blown into the freezer compartment 13 and the freezer compartment 13 is cooled.

Here, in this embodiment, the middle duct parts 43 and 53 are configured to protrude into the freezer compartment 13. Side openings 43b1 to 43c2, 53b1 and 53c1 are formed in side surfaces 43b, 43c, 53b and 53c of middle duct parts 43 and 53, respectively. Therefore, the cold air is easily blown from the side openings 43b1 to 43c2, 53b1, and 53c1 along the back surface of the freezer compartment 13, making it easier to blow the cold air to the entire back surface of the freezer compartment 13. Therefore, the freezer compartment 13 can be efficiently cooled.

In particular, in the middle duct space 53s in the rotation axis direction C1 of the blower fan 26, the airflow blown from the blower fan 26 tends to become a swirling flow that flows while rotating around the rotation center C1. Therefore, the cold air is easily blown forward while flowing along the inner circumferential side of the middle duct space 53s. In this embodiment, by providing side openings 53b1, 43b1, 43b2, 53c1, 43c1, and 43c2 on the inner circumferential side of the middle duct space 53s, cold air can be efficiently delivered while utilizing the air blowing characteristics of the blower fan 26. Air can be easily introduced into the freezer compartment 13.

Furthermore, a connecting duct space 55s extending downward (sideways) is provided in the middle duct space 53s. Therefore, it becomes easy to efficiently guide air downward while utilizing the air blowing characteristics of the blower fan 26, and it becomes easy to discharge cold air from the bottom opening 46a.

[1-3. Effects, etc.]
As described above, in the present embodiment, the refrigerator 10 includes the freezing compartment 13 as an example of a storage compartment, and the cooling compartment 20 in which the evaporator 22 is installed is formed on the back side of the freezing compartment 13. , a partition part 29 that partitions between the freezing compartment 13 and the cooling compartment 20, and a blower fan 26 arranged on the back side of the partition part 29. A middle duct part 43 is provided which projects toward the freezer compartment 13 side, and a middle duct space 53s is formed in the middle duct part 43 in the rotational axis direction C1 of the blower fan 26 through which cold air is blown from the blower fan 26. , side openings 43b1, 43b2, 43c1, and 43c2 are formed in the middle duct portion 43 to communicate the middle duct space 53s and the freezer compartment 13.
Thereby, by providing the side openings 43b1 to 43c2 on the side surface of the middle duct portion 43, the air blown in the rotation axis direction C1 by the blower fan 26, which tends to generate a swirling flow, can be efficiently flowed out from the middle duct space 53s. Therefore, the air blown by the blower fan 26 can be efficiently guided to the freezer compartment 13.

As in the present embodiment, the middle duct portion 43 has side surfaces 43b and 43c that extend in the vertical direction, and curved side surfaces (curved surfaces) 43e and 43f that extend downward from the lower ends of the side surfaces 43b and 43c. The openings 43b1, 43b2, 43c1, 43c2 may extend from the side surfaces 43b, 43c to the curved side surfaces 43e, 43f.
Thereby, air can be blown in the side direction and downward direction of the middle duct portion 43 through the side openings 43b1, 43b2, 43c1, and 43c2.

As in the present embodiment, a lower duct portion 45 is formed below the middle duct portion 43 and protrudes toward the freezer compartment 13 side than the base portion (base surface) 41 and extends downward from the middle duct portion 43. A bottom duct part 46 is formed below the base part 41 and is connected to the lower duct part 45, and a bottom opening 46a that opens forward is formed in the bottom duct part 46. , a connecting duct space 55s may be formed in the lower duct portion 45 to connect the middle duct space 53s and the bottom opening 46a.
Thereby, the air blown laterally within the middle duct space 53s can be supplied to the lower part of the freezer compartment 13 with less air resistance.

As in this embodiment, the side surfaces 53b and 53c of the lower duct portion 55 and the upper surfaces 56b and 56c of the bottom duct portion 56 may be connected.
Thereby, the cold air easily passes through the connecting duct space 55s from top to bottom, flows to the bottom opening 46a, and can be discharged forward from the bottom opening 46a.

As in the present embodiment, the horizontal width of the bottom opening 46a is larger than the horizontal width of the connecting duct space 55s, and even if the connecting portion 55s1 with the bottom opening 46a in the connecting duct space 55s is rounded and connected. good.
Thereby, the cold air that has fallen from the connecting duct space 55s can easily spread in the left and right width direction of the bottom opening 46a according to the rounded shape of the connecting part 55s1, and the cold air can be easily discharged forward from the entire bottom opening 46a.

As in the present embodiment, the partition section 29 includes a first partition plate 30 disposed on the front side of the cooling chamber 20 and a first partition plate 30 disposed on the freezing chamber 13 side with respect to the first partition plate 30 on the back side of the freezing chamber 13. A middle duct portion 43 is formed in the second partition plate 40, and a base portion (base surface) 31 of the first partition plate 30 is formed in the first partition plate 30. A fan plate portion 32 may be formed that protrudes toward the second partition plate 40 side, the fan plate portion 32 may enter the middle duct space 53s, and the blower fan 26 may be supported by the fan plate portion 32.
Thereby, the blower fan 26 can be placed closer to the freezing compartment 13 by the fan plate portion 32, so that air can be blown in the front direction into the freezing compartment 13 with less air resistance.

As in this embodiment, the fan plate portion 32 may be arranged on the back side of the side openings 43b1, 43b2, 43c1, and 43c2.
This avoids reducing the opening area of the side openings 43b1, 43b2, 43c1, and 43c2 in the fan plate portion 32, and maintains the ability to blow air in the side direction, while blowing air in the front direction with less air resistance.

As in this embodiment, the first partition plate 30 may be provided with a heat insulating material 39 facing the connecting duct space 55s.
Thereby, it is possible to suppress the dew condensation water from freezing in the connecting duct space 55s, and it is possible to suppress the dew condensation water from freezing on the surface of the first partition plate 30.

(Other embodiments)
Note that Embodiment 1 has been described as an example of the technology disclosed in this application. However, the technology in the present disclosure is not limited to this, and can also be applied to embodiments in which changes, replacements, additions, omissions, etc. are made.

In Embodiment 1, the configuration in which the storage compartment is the freezing compartment 13 has been described. The present invention is not limited to this. For example, the storage compartment may be the refrigerator compartment 12, or the refrigerator may have only one of the refrigerator compartment 12 and the freezer compartment 13.

Further, in the first embodiment, the rotation center C1 of the blower fan 26 is arranged at an angle, but the invention is not limited to this. For example, the rotation center C1 may be arranged so as to be substantially horizontal. Good too.

(Additional note)
The following technology is disclosed by the description of the above embodiments.

(Technology 1) A storage room is provided, a cooling room in which an evaporator is installed is formed on the back side of the storage room, and a partition section partitions the storage room and the cooling room, and a back side of the partition section. a blower fan disposed on the side, the partition portion is provided with a first duct portion that protrudes toward the storage chamber side from a base surface of the partition portion, and the first duct portion is provided with a An air passage through which cool air blown from the blower fan flows is formed in the direction of the rotation axis of the blower fan, and a side opening is formed in the first duct portion to communicate the air passage with the storage chamber. refrigerator.
With this configuration, the air blown in the direction of the rotation axis by the blower fan, which tends to create a swirling flow, can be efficiently flowed out of the air path of the first duct part by providing a side opening in the side surface of the first duct part. Therefore, the air blown by the blower fan can be efficiently guided into the storage room.

(Technique 2) A technique in which the first duct portion has a side surface extending in the vertical direction and a curved surface extending downward from the lower end of the side surface, and the side opening extends from the side surface to the curved surface. Refrigerator according to item 1.
With this configuration, air can be blown in the side direction and downward direction of the first duct part through the side opening.

(Technique 3) A second duct part is formed below the first duct part, protruding toward the storage chamber side from the base surface and extending downward from the first duct part, and below the second duct part. A third duct part is formed that protrudes toward the storage chamber side from the base surface and is connected to the second duct part, and a lower front opening that opens forward is formed in the third duct part. , The refrigerator according to technique 1 or 2, wherein the second duct portion has a connecting air path that connects the air path and the lower front opening.
With this configuration, side air in the air path can be supplied to the lower part of the storage chamber with less air resistance.

(Technique 4) The refrigerator according to technique 3, in which a side surface of the second duct part and an upper surface of the third duct part are connected.
With this configuration, the cold air can easily flow through the connecting air passage from top to bottom to the lower front opening, and can be discharged forward from the lower front opening.

(Technique 5) The horizontal width of the lower front opening is larger than the horizontal width of the connecting air path, and the connecting portion of the connecting air path with the lower front opening is rounded. refrigerator.
With this configuration, the cold air that has fallen from the connecting air path can easily spread in the left and right width direction of the lower front opening according to the rounded shape of the connecting portion, and the cold air can be easily discharged forward from the entire lower front opening.

(Technique 6) The partition section includes a first partition plate disposed on the front side of the cooling chamber, and a second partition plate disposed on the back side of the storage chamber that is closer to the storage chamber side than the first partition plate. a partition plate, the first duct portion is formed on the second partition plate, and the first partition plate protrudes toward the second partition plate from the base surface of the first partition plate. 6. The refrigerator according to any one of techniques 1 to 5, wherein a fan plate portion is formed, the fan plate portion enters the air path, and the blower fan is supported by the fan plate portion.
With this configuration, the blower fan can be disposed close to the storage chamber by the fan plate portion, so that air can be blown in the front direction into the storage chamber with less air resistance.

(Technique 7) The refrigerator according to Technique 6, wherein the fan plate portion is arranged on the back side of the side opening.
With this configuration, it is possible to avoid reducing the opening area of the side opening in the fan plate portion and maintain the ability to blow air in the side direction, while blowing air in the front direction with less air resistance.

(Technique 8) The refrigerator according to Technique 6 or 7, wherein the first partition plate is provided with a heat insulating material.
With this configuration, it is possible to suppress condensed water from freezing on the surface of the first partition plate.

As described above, the refrigerator according to the present disclosure can be suitably used as a refrigerator that blows cold air using a blower fan.

10 Refrigerator 13 Freezer room (storage room)
22 Evaporator 20 Cooling chamber 29 Partition part 26 Blower fan 30 First partition plate 31 Base part (base surface)
32 Fan plate section 39 Heat insulating material 40 Second partition plate 41 Base section (base surface)
43 Middle duct part (first duct part)
43b, 43c Side surface 43b1, 43b2, 43c1, 43c2 Side opening 43e, 43f Curved surface 45 Lower duct part (second duct part)
45b, 45c Side surface 46 Bottom duct part (third duct part)
46a Bottom opening (lower front opening)
46b, 46c Top surface 53s Middle duct space (air path)
55s Connected duct space (Connected air path)
55s1 connection part

Claims (8)

Equipped with a storage room,
forming a cooling chamber in which an evaporator is installed on the back side of the storage chamber;
a partition that partitions between the storage chamber and the cooling chamber;
a blower fan disposed on the back side of the partition,
The partition portion is provided with a first duct portion that protrudes toward the storage chamber side from a base surface of the partition portion,
An air path is formed in the first duct portion in the direction of the rotation axis of the blower fan, through which cool air is blown from the blower fan,
The first duct portion is provided with a side opening that communicates the air path with the storage chamber. The first duct portion has a side surface extending in the vertical direction and a curved surface extending downward from the lower end of the side surface,
The refrigerator according to claim 1, wherein the side opening extends from the side surface to the curved surface. A second duct portion is formed below the first duct portion, protruding toward the storage chamber side from the base surface and extending downward from the first duct portion;
A third duct part is formed below the second duct part, protruding toward the storage chamber side from the base surface and connected to the second duct part,
A lower front opening opening forward is formed in the third duct part,
The refrigerator according to claim 2, wherein the second duct portion has a connecting air path that connects the air path and the lower front opening. The refrigerator according to claim 3, wherein a side surface of the second duct part and an upper surface of the third duct part are connected. The refrigerator according to claim 4, wherein the horizontal width of the lower front opening is larger than the horizontal width of the connecting air passage, and a connecting portion of the connecting air passage with the lower front opening is rounded. The partition section includes a first partition plate disposed on the front surface of the cooling chamber, and a second partition plate disposed on the back side of the storage chamber and located closer to the storage chamber than the first partition plate. Equipped with
The first duct portion is formed in the second partition plate,
A fan plate portion is formed on the first partition plate and protrudes toward the second partition plate from a base surface of the first partition plate,
the fan plate portion enters the air passage;
The refrigerator according to any one of claims 1 to 5, wherein the blower fan is supported by the fan plate section. The refrigerator according to claim 6, wherein the fan plate portion is arranged closer to the back side than the side opening. The refrigerator according to claim 6, wherein the first partition plate is provided with a heat insulating material.

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