JP2024056348A - refrigerator - Google Patents

Abstract

To provide a refrigerator that can restrain turbulence in an air flow inside a fan casing and leakage of air by using a blower fan.SOLUTION: A refrigerator comprises a refrigeration chamber 11. A refrigeration cooling chamber 30 in which a refrigeration cooler 54 is installed is formed on the back side of the refrigeration chamber 11. The refrigerator comprises a second separating plate 50 separating the refrigeration chamber 11 and the refrigeration cooling chamber 30, and a blower fan 70 installed on the back side of the second separating plate 50. A first drainage groove 85 for discharging dew condensation water generated in a fan casing 72 of the blower fan 70 to the outside of the fan casing 72 is formed in the second separating plate 50.SELECTED DRAWING: Figure 8

Description

This disclosure relates to refrigerators.

Patent Document 1 discloses a refrigerator that includes a first storage compartment in the refrigeration temperature range, a second storage compartment in the freezing temperature range, a first evaporator that cools the first storage compartment, a second evaporator that cools the second storage compartment, a first blower that blows air cooled by the first evaporator, and a second blower that blows air cooled by the second evaporator, where the first blower is a turbofan that is positioned higher than the first evaporator, and where the depth dimension of the first evaporator is equal to the depth of the air passage where the turbofan is located.

JP 2019-078493 A

This disclosure provides a refrigerator that uses a blower fan to suppress turbulence in the airflow and air leakage inside the fan casing.

The refrigerator disclosed herein includes a storage compartment, a cooling compartment in which a cooler is installed is formed on the rear side of the storage compartment, a partition that separates the storage compartment from the cooling compartment, and a blower fan disposed on the rear side of the partition, and a first drain groove is formed in the partition to drain condensation water generated in a fan casing of the blower fan to the outside of the fan casing.

In the refrigerator disclosed herein, when condensation occurs inside the fan casing of the blower fan, the condensed water can be discharged to the outside of the fan casing via the first drain groove. In addition, since the first drain groove is formed in the partition and no drain groove is formed in the fan casing, it is possible to suppress turbulence of the airflow inside the fan casing and to suppress air leakage from the fan casing.

FIG. 1 is a vertical cross-sectional view of a refrigerator according to a first embodiment. FIG. 1 is a front view of a cooling chamber portion according to the first embodiment; FIG. 1 is an exploded perspective view of a duct portion according to a first embodiment; 1 is a rear view of a blower fan portion according to the first embodiment; FIG. 1 is a perspective view of a blower fan portion according to a first embodiment, as viewed from the rear; FIG. 1 is an exploded perspective view of a blower fan portion according to a first embodiment; FIG. 1 is an exploded perspective view of a blower fan portion according to a first embodiment, as viewed from the rear; FIG. 1 is an enlarged view of a blower fan portion according to the first embodiment; FIG. 1 is an enlarged view of a blower fan portion with a fan casing removed according to the first embodiment;

(Knowledge and other information that forms the basis of this disclosure)
At the time when the inventors arrived at the present disclosure, there was a technique in which the first blower was configured as a turbofan and air was blown out by the turbofan.
However, in conventional technology, drainage holes for discharging condensation water generated inside the fan casing of the turbofan to the outside of the fan casing are formed on the underside of the fan casing. When drainage holes are formed on the underside of the fan casing in this way, the airflow inside the fan casing is easily disturbed because the drainage holes are located on the surface of the fan casing through which the airflow flows, and the air inside the fan casing leaks through the drainage holes, which causes a decrease in the efficiency of the fan. The inventors discovered this problem, and came to constitute the subject of the present disclosure in order to solve this problem.
In view of this, the present disclosure provides a refrigerator that can suppress turbulence of the airflow inside the fan casing and air leakage by using a blower fan.

Hereinafter, the embodiments will be described in detail with reference to the drawings. However, in some cases, more detailed explanations than necessary may be omitted. For example, detailed explanations of already well-known matters or duplicate explanations of substantially the same configurations may be omitted.
It should be noted that 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 described in the claims.

(Embodiment 1)
Hereinafter, the first embodiment will be described with reference to FIGS.
[1-1. Configuration]
[1-1-1. Configuration of refrigerator]
Fig. 1 is a vertical cross-sectional view of a refrigerator in accordance with embodiment 1. Fig. 2 is a front view of a cooling compartment in accordance with embodiment 1. Fig. 3 is an exploded perspective view of a duct in accordance with embodiment 1.
In the description of this specification, references to the front, back, left and right of refrigerator 1 are based on Fig. 1 and Fig. 2. That is, the left and right of Fig. 1 will be described as corresponding to the front and back of refrigerator 1. Also, the left and right of Fig. 2 will be described as corresponding to the left and right of refrigerator 1. Note that the front side of refrigerator 1 may be referred to as the "front". Also, the rear side of refrigerator 1 may be referred to as the "rear".

1, the refrigerator 1 includes a box-shaped housing 10 having an open front. A compressor 5 is mounted on the rear upper surface of the housing 10.
A refrigerator compartment 11 with a temperature of about 2° C. to 4° C. is formed in the upper part of the housing 10 as a storage compartment, and a freezer compartment 12 with a temperature of about -18° C. is formed in the lower part of the housing 10. A switchable compartment 13 is formed between the refrigerator compartment 11 and the freezer compartment 12. The switchable compartment 13 can be used as a low-temperature compartment with a temperature of about -5° C. to about 1° C. or as the freezer compartment 12 by operating a selector switch (not shown).

In the refrigerator 1, a revolving door 14 is provided at the opening on the front side of the refrigeration chamber 11 so as to be able to be opened and closed freely.
Located at the bottom inside the refrigerator compartment 11 are a vegetable compartment 15 serving as a drawer storage compartment located at the upper level, and a micro-freezing compartment 16 serving as a drawer storage compartment located at the lower level.
The vegetable compartment 15 is provided with a vegetable compartment pull-out case 17, and the micro-freezing compartment 16 is provided with a micro-freezing compartment pull-out case 18.

A freezer compartment drawer door 19 is provided at the opening on the front side of the freezer compartment 12 so as to be freely opened and closed, and a freezer compartment drawer case 20 having multiple stages for storing food therein is provided.
A switchable compartment drawer door 21 is provided at the opening on the front side of the switchable compartment 13 so as to be able to be opened and closed freely, and a switchable compartment drawer case 22 is provided which is linked to the opening and closing of the switchable compartment drawer door 21.

As shown in FIG. 1, a refrigeration cooling compartment 30 is provided on the rear side of the refrigeration compartment 11 of the refrigerator 1.
The refrigerator compartment 11 and the refrigerator cooling compartment 30 are separated by a first partition plate 31, and a first molded insulation material 32 having approximately the same outline as the first partition plate 31 is provided on the back side of the first partition plate 31.
A refrigeration duct 33 is formed on the surface of the first molded insulating material 32 facing the first partition plate 31 .

The refrigeration duct 33 includes a main air passage 34 extending vertically at approximately the center in the left-right direction, and two sub air passages 35 extending diagonally upward in the left-right direction from both sides of the main air passage 34 .
At the lower end of the main air passage 34, a refrigeration inlet 36 is formed which communicates with the fan outlet of the blower fan 70 described later, and at the upper end of the main air passage 34, a refrigeration outlet 37 is formed which communicates with the upper part of the refrigerator compartment 11.

The sub-air passages 35 are tapered from left to right, and a side air outlet 38 communicating with the side of the refrigerator compartment 11 is formed at the tip of each sub-air passage 35 .
Front air outlets 39 are formed in the middle of the main air passage 34 at a predetermined interval in the vertical direction and communicate with the refrigerator compartment 11 .
A straightening block 40 is provided in the vicinity of the upper part of the front air outlet 39. The lower surface of the straightening block 40 located at the lower part is formed in a flat shape. The lower surface of the straightening block 40 located at the upper part is formed as an inclined surface that slopes upward to the left and right.

A guide rib 41 extending in the vertical direction is provided below the refrigeration duct 33 between the refrigeration inlet 36 and the front air outlet 39 located below. The lower end of the guide rib 41 is positioned away from the approximate center in the horizontal direction of the refrigeration inlet 36 on the opposite side to the side on which the rotary fan of the blower fan 70 described below is installed. As a result, the guide rib 41 is positioned at a slight incline in the vertical direction.
The cold air flowing in from the refrigeration inlet 36 passes through the main air duct 34 and is blown out from the upper end of the main air duct 34 through the air outlet into the refrigeration chamber 11. A part of the cold air in the main air duct 34 passes through each of the sub-air ducts 35 and is discharged from the side air outlet 38 into the refrigeration chamber 11, and is also blown out from the front air outlet 39 into the refrigeration chamber 11.

A second partition plate 50 and a third partition plate 51 are provided between the vegetable compartment 15 and the micro-freezing compartment 16 and the refrigeration cooling compartment 30.
A second molded insulating material 52 is provided between the second partition plate 50 and the third partition plate 51. The second partition plate 50, the third partition plate 51 and the second molded insulating material 52 constitute the partition portion of the present disclosure.

A refrigeration inlet 53 communicating with the slight freezing chamber 16 is formed at the lower ends of the second partition plate 50, the second molded insulation material 52 and the third partition plate 51.
A refrigeration cooler 54 is provided below the rear surface of the second partition plate 50. A blower fan 70 is provided above the second partition plate 50.

A freezing cooling compartment 60 is provided on the rear side of the freezing compartment 12 and the switchable compartment 13 of the refrigerator 1.
The freezing chamber 12 and the freezing cooling chamber 60 are separated by a fourth partition plate 61. The fourth partition plate 61 is formed with a freezing suction port 62 that communicates with the freezing chamber 12 and takes in the cold air from the freezing chamber 12 into the freezing cooling chamber 60.
The fourth partition plate 61 is formed with a freezer air outlet 63 communicating with the freezer compartment 12 and a switchable compartment air outlet 64 communicating with the switchable compartment 13 .

The freezing cooling chamber 60 accommodates a freezing cooler 65 .
The freezing cooler 65 is, for example, a fin tube type cooler. The fin tube type cooler is, for example, a cooler composed of a circular pipe and flat fins. A freezing fan 66 is disposed above the freezing cooler 65 to send the cold air cooled by the freezing cooler 65 into the freezing chamber 12.

For example, an axial fan is used as the refrigeration fan 66. The axial fan is disposed at an incline so that the blowing side faces upward so that the cold air cooled by the refrigeration cooler 65 can be efficiently blown out into the freezing chamber 12.
The refrigeration fan 66 may be, for example, a centrifugal fan.
A heater 67 such as a glass tube heater is disposed below the cryocooler 65 in order to remove frost adhering to the cryocooler 65 .
A freezer dew tray 68 is disposed below the freezer cooler 65 .

[1-1-2. Configuration of the blower fan part]
Next, the configuration of the blower fan portion will be described.
Fig. 4 is a rear view of the blower fan portion in the first embodiment. Fig. 5 is a rear perspective view of the blower fan portion in the first embodiment. Fig. 6 is an exploded front perspective view of the blower fan portion in the first embodiment. Fig. 7 is an exploded rear perspective view of the blower fan portion in the first embodiment. Fig. 8 is an enlarged view of the blower fan portion in the first embodiment. Fig. 9 is an enlarged view of the blower fan portion in the first embodiment with the fan casing removed.

4 to 7 , the blower fan 70 includes a rotary fan 71 and a fan casing 72 that covers the rotary fan 71. The blower fan 70 is configured to suck air in from the direction of the rotation axis of the rotary fan 71 and blow the air in the radial direction of the rotary fan 71.
Fan casing 72 is formed in a spiral shape that gradually widens from the center of rotation of blower fan 70. In this embodiment, fan casing 72 is formed in a shape such that an upper portion of rotating fan 71 of blower fan 70 is closest to rotating fan 71, and the shape gradually widens to extend to approximately the center of refrigerator 1 in the left-right direction.

A fan suction port 73 that draws in air by the rotation of the rotary fan 71 is formed on the surface of the fan casing 72. A fan outlet 74 that communicates with the refrigeration inlet 36 of the main air passage 34 is formed on the upper part of the fan casing 72.
Fan outlet 74 of fan casing 72 is located at approximately the center in the left-right direction of refrigerator 1. Therefore, the center of rotation of rotating fan 71 is shifted to one side (to the left when viewed from the front side) with respect to the center in the left-right direction of refrigerator 1.

The rotary fan 71 of the blower fan 70 is attached to the rear side of the second partition plate 50. A fan attachment portion 75 having an opening is provided at the attachment portion of the second partition plate 50 to which the rotary fan 71 is attached.
A casing mounting recess 76 having substantially the same shape as the outer shape of the fan casing 72 is formed around the fan mounting portion 75 .

The lower part of the fan casing 72 is formed as an inclined surface 77 that is inclined obliquely upward. A bent portion 78 is formed in the middle of the inclined surface 77 by recessing a part of the inclined surface 77 toward the inside of the fan casing 72.
An outwardly extending flange portion 79 is formed on the outer periphery of the fan casing 72 .

A plurality of engaging claws 80 are provided at predetermined positions on the outside of the casing mounting recess 76 of the second partition plate 50 as engaging means for engaging with the flange portion 79 of the fan casing 72 and fixing the fan casing 72 to the second partition plate 50.
As a result, by engaging the flange portion 79 with the engaging claw 80, the fan casing 72 can be easily fixed to the second partition plate 50.

An outlet opening 90 is formed in the upper surface of the second partition plate 50. The outlet opening 90 is disposed so that the fan outlet 74 of the fan casing 72 is positioned therein.
A mild freezing chamber inlet 91 is formed on one side of the outlet opening 90 of the second partition plate 50. A mild freezing chamber duct 93 is formed in the second molded insulation material 52, which communicates between the mild freezing chamber inlet 91 and a mild freezing chamber outlet 92 that opens into the mild freezing chamber 16.
A vegetable chamber inlet 94 is formed on the other side of the outlet opening 90 of the second partition plate 50. A vegetable chamber duct 96 is formed in the second molded insulation material 52, the vegetable chamber inlet 94 communicating with a vegetable chamber outlet 95 opening into the vegetable chamber 15.
Between the blow-out opening 90 and the inlet 91 for the micro-freezing compartment and the inlet 94 for the vegetable compartment, there is provided a generally triangular straightening member 97 that protrudes downward.
The fan outlet 74 formed in the fan casing 72, the outlet opening 90 formed in the second partition plate 50, the inlet 94 for the vegetable compartment, and the inlet 91 for the micro-freezing compartment constitute the branch flow path of the present disclosure.

The blow-out opening 90 is provided with a damper 81. The damper 81 is located approximately in the center in the left-right direction and is composed of a refrigeration damper 82 that adjusts the flow rate of cold air to the refrigeration inlet 36 of the refrigeration duct 33, a micro-freezing chamber damper 83 that adjusts the flow rate of cold air to the micro-freezing chamber duct 93, and a vegetable chamber damper 84 that adjusts the flow rate of cold air to the vegetable chamber duct 96.

The second molded insulation material 52 has a first drain groove 85 formed therein, which connects the casing mounting recess 76 to the lower part of the fan casing 72. The second molded insulation material 52 has a second drain groove 86 formed therein, which connects the fan mounting portion 75 to the lower part of the fan casing 72.
As a result, condensation water accumulated in the casing mounting recess 76 is drained to the outside of the fan casing 72 through the first drain groove 85, and condensation water accumulated in the fan mounting portion 75 is drained to the outside of the fan casing 72 through the second drain groove 86.

Furthermore, the second molded insulation material 52 is formed with a wiring groove 87 that extends obliquely downward from the fan mounting portion 75 and is used to route the wiring of the rotary fan 71 to the outside of the fan casing 72. A locking piece 88 for locking the wiring is provided in the middle of the wiring groove 87.
The upper end of the wiring groove 87 is located higher than the upper end of the second drainage groove 86, so that condensation water that accumulates in the wiring groove 87 is discharged to the outside of the fan casing 72 via the second drainage groove 86.
The wiring 100 taken out from below the wiring groove 87 is guided along the outer periphery of the fan casing 72 to above the fan casing 72 .
A connector storage section 101 is provided above the second partition plate 50 , and a connector (not shown) provided at an end of the wiring 100 is configured to be stored in the connector storage section 101 .

[1-2. Operation, etc.]
Next, the operation of the refrigerator 1 in the first embodiment will be described.
In this embodiment, the compressor 5 is driven to send the refrigerant to the refrigerant circuit, and the refrigerant is selectively circulated to the refrigeration cooler 54 or the freezing cooler 65. The cooling device 65 is cooled.
Then, by driving the blower fan 70, the air in the refrigerator compartment 11 is sucked into the refrigerator cooling compartment 30 through the cooling compartment suction port. The air sucked into the refrigerator cooling compartment 30 passes through the refrigerator cooler 54. The refrigerant flows from the bottom to the top, is cooled by heat exchange with the refrigeration cooler 54 in which the refrigerant flows, and is sucked into the fan casing 72 through the fan suction port 73.

The air drawn into the fan casing 72 is blown out in the circumferential direction by the rotary fan 71 , guided along the underside of the fan casing 72 , and blown out from the fan outlet 74 towards the main air passage 34 .
The air blown into the main air passage 34 passes through the main air passage 34 and the sub-air passage 35 and is then blown out from the refrigeration outlet 37, the side outlet 38, and the front outlet into the refrigerator compartment 11, thereby cooling the refrigerator compartment 11.

On the other hand, a portion of the air in the fan casing 72 is blown out from the slight freezing chamber opening through the slight freezing chamber duct 93 and into the slight freezing chamber 16 through the slight freezing chamber outlet 92 .
Similarly, a portion of the air from the fan casing 72 is blown out from the vegetable compartment opening through the vegetable compartment duct 96 and into the vegetable compartment 15 through the vegetable compartment outlet 95 .
The flow rate of air sent to the main air passage 34, the opening for the slight freezing compartment, and the opening for the vegetable compartment is adjusted by the opening amount of the refrigeration damper 82, the damper 83 for the slight freezing compartment, and the damper 84 for the vegetable compartment.

In addition, by driving the freezing fan 66, the air inside the freezing chamber 12 is sucked from the suction port of the freezing chamber 12 into the freezing cooling chamber 60. The air sucked into the freezing cooling chamber 60 flows from the bottom to the top through the freezing cooler 65, and is cooled by heat exchange with the freezing cooler 65 through which the refrigerant flows.
The air cooled by heat exchange with the refrigeration cooler 65 is blown out into the freezer compartment 12 through the freezer outlet 63, and also blown out into the switching compartment 13 through the switching compartment outlet 64, thereby cooling the freezer compartment 12 and the switching compartment 13.

Here, when condensation occurs inside the fan casing 72 of the blower fan 70 and in the casing mounting recess 76 , the condensed water drips downward from the fan casing 72 .
In this embodiment, since the first drain groove 85 is provided, the condensation water flows to the outside of the fan casing 72 via the first drain groove 85 and is stored at the bottom of the refrigeration cooling chamber 30.
In addition, if condensation occurs on the fan mounting portion 75 of the fan casing 72, the condensed water flows from the fan mounting portion 75 through the second drain groove 86 to the outside of the fan casing 72 and is accumulated at the bottom of the refrigeration cooling chamber 30.
The condensation water stored in the refrigeration cooling compartment 30 is stored below the refrigerator 1 through a condensation water pipe extending below the refrigerator 1.
Since the fan mounting portion 75 is formed in a stepped shape relative to the casing mounting portion, if condensation occurs in the casing mounting recess 76 and the fan mounting portion 75, respectively, the first drainage groove 85 and the second drainage groove 86 can smoothly drain the condensed water from the fan casing 72, respectively.

In addition, in this embodiment, a wiring groove 87 is provided. Since the upper end of the wiring groove 87 is located above the upper end of the second drainage groove 86, condensation water that has accumulated in the fan mounting portion 75 or that has adhered to the wiring 100 flows into the second drainage groove 86 without flowing into the wiring groove 87. Therefore, the second drainage groove 86 allows condensation water that has accumulated in the fan mounting portion 75 and the wiring 100 to be discharged to the outside of the fan casing 72.

[1-3. Effects, etc.]
As described above, in this embodiment, the refrigerator includes a refrigerator compartment 11 (storage compartment), a refrigerator cooling compartment 30 (cooling compartment) in which a refrigerator cooler 54 (cooler) is installed is formed on the rear side of the refrigerator compartment 11, a second partition plate 50 (partition portion) that separates the refrigerator compartment 11 from the refrigerator cooling compartment 30, and a blower fan 70 arranged on the rear side of the second partition plate 50. The second partition plate 50 is formed with a first drain groove 85 that drains condensation water generated in a fan casing 72 of the blower fan 70 to the outside of the fan casing 70.
As a result, if condensation occurs inside the fan casing 72 of the blower fan 70, the condensed water can be discharged to the outside of the fan casing 72 through the first drain groove 85. Also, since the first drain groove 85 is formed in the second partition plate 50 and no drain groove is formed in the fan casing 72, turbulence of the airflow inside the fan casing 72 can be suppressed, and air leakage from the fan casing 72 can be suppressed.

In addition, in this embodiment, a fan mounting portion 75 of the blower fan 70 is provided on the second partition plate 50 (partition portion), and a second drainage groove 86 is formed in the second partition plate 50 to drain condensation water generated at the fan mounting portion 75 to the outside of the fan casing 72.
As a result, if condensation occurs inside the fan casing 72 of the blower fan 70, the condensed water can be discharged to the outside of the fan casing 72 via the second drain groove 86. Also, since the second drain groove 86 is formed in the second partition plate 50 and no drain groove is formed in the fan casing 72, turbulence of the airflow inside the fan casing 72 can be suppressed, and air leakage from the fan casing 72 can be suppressed.

In addition, in this embodiment, a wiring groove 87 for pulling out the wiring 100 of the blower fan 70 is formed in the second partition plate 50 (partition portion), and the upper end of the wiring groove 87 is positioned at a higher position than the upper ends of the first drainage groove 85 and the second drainage groove 86.
As a result, even if condensation water generated in fan mounting portion 75 flows into wiring groove 87, first drain groove 85 and second drain groove 86 located below wiring groove 87 can drain the condensation water to the outside of fan casing 72. In addition, since wiring groove 87 is formed in second partition plate 50 and no drain groove is formed in fan casing 72, turbulence of the airflow inside fan casing 72 can be suppressed and air leakage from fan casing 72 can be suppressed.

In this embodiment, the second drainage groove 86 is disposed between the first drainage groove 85 and the wiring groove 87 .
As a result, even if condensation water generated on the fan mounting portion 75 flows into the wiring groove 87 , the condensation water can be discharged to the outside of the fan casing 72 by the second drainage groove 86 .

In the present embodiment, the wiring 100 housed in the wiring groove 87 is routed upward below the wiring groove 87 and guided upward along the outer periphery of the fan casing 72 .
As a result, even if condensation water flows onto the wiring 100, the condensation water falls below the wiring groove 87 and does not flow onto the connector portion of the wiring 100 that is guided upward.

In addition, in this embodiment, a flange portion 79 extending outward is formed on the outer periphery of the fan casing 72, and the second partition plate 50 (partition portion) is provided with a plurality of engagement claws 80 (engagement means) that engage with the flange portion 79 and fix the fan casing 72 to the second partition plate 50.
As a result, by fixing the fan casing 72 with the engaging claws 80, the fan casing 72 can be fixed to the second partition plate 50 without using screws or the like.

Other Embodiments
Note that the first embodiment has been described as an example of the technology disclosed in the present application. However, the technology in the present disclosure is not limited to this, and can be applied to embodiments in which modifications, substitutions, additions, omissions, and the like are made.

(Additional Note)
The above description of the embodiments discloses the following techniques.

(Technology 1) A refrigerator comprising: a storage compartment; a cooling compartment in which a cooler is installed formed on the rear side of the storage compartment; a partition section separating the storage compartment from the cooling compartment; and a blower fan arranged on the rear side of the partition section; and a first drain groove formed in the partition section to drain condensation water generated within a fan casing of the blower fan to the outside of the fan casing.
With this configuration, if condensation occurs inside the fan casing of the blower fan, the condensed water can be discharged to the outside of the fan casing through the first drain groove. Also, since the first drain groove is formed in the partition and no drain groove is formed in the fan casing, it is possible to suppress turbulence of the airflow inside the fan casing and also to suppress air leakage from the fan casing.

(Technology 2) A refrigerator described in Technology 1, in which a fan mounting portion for the blower fan is provided in the partition portion, and a second drain groove is formed in the partition portion to drain condensation water generated at the fan mounting portion to the outside of the fan casing.
With this configuration, if condensation occurs inside the fan casing of the blower fan, the condensed water can be discharged to the outside of the fan casing through the second drain groove. Also, since the second drain groove is formed in the partition and no drain groove is formed in the fan casing, it is possible to suppress turbulence of the airflow inside the fan casing and also to suppress air leakage from the fan casing.

(Technology 3) A refrigerator described in Technology 2, in which a wiring groove is formed in the partition portion for drawing out wiring of the blower fan, and an upper end of the wiring groove is positioned at a higher position than upper ends of the first drain groove and the second drain groove.
With this configuration, even if condensation water generated in the fan mounting portion flows into the wiring groove, the condensation water can be discharged to the outside of the fan casing by the first drain groove and the second drain groove located below the wiring groove. Also, since the wiring groove is formed in the partition portion and no drain groove is formed in the fan casing, it is possible to suppress turbulence of the airflow inside the fan casing and to suppress air leakage from the fan casing.

(Technology 4) The refrigerator described in Technology 3, wherein the second drain groove is arranged between the first drain groove and the wiring groove.
With this configuration, even if condensation water generated in the fan mounting portion flows into the wiring groove, the condensation water can be discharged to the outside of the fan casing by the second drainage groove.

(Technology 5) A refrigerator described in Technology 3, in which the wiring accommodated in the wiring groove is routed upward below the wiring groove and guided upward along the outer periphery of the fan casing.
With this configuration, even if condensation water flows onto the wiring, the condensation water falls below the wiring groove and does not flow onto the connector portion of the wiring that is guided upward.

(Technology 6) A refrigerator described in Technology 1, in which a flange portion extending outward is formed on the outer periphery of the fan casing, and the partition portion is provided with a plurality of engagement means that engage with the flange portion and secure the fan casing to the partition portion.
With this configuration, by fixing the fan casing with the engaging means, it is possible to fix the fan casing to the partition plate portion without using screws or the like.

As described above, the refrigerator according to the present disclosure can be suitably used in refrigerators that can suppress turbulence of the airflow and air leakage inside the fan casing by using a blower fan.

REFRIGERATION COMPONENTS 1 Refrigerator 5 Compressor 10 Housing 11 Refrigerating compartment 12 Freezing compartment 13 Switching compartment 14 Door 15 Vegetable compartment 16 Micro-freezing compartment 17 Drawer case for vegetable compartment 18 Drawer case for micro-freezing compartment 19 Drawer-type door for freezer compartment 20 Drawer case for freezer compartment 21 Drawer-type door for switchable compartment 22 Drawer case for switchable compartment 30 Refrigerating cooling compartment 31 First partition plate 32 First molded insulation material 33 Refrigerating duct 34 Main air passage 35 Sub-air passage 35 Each sub-air passage 36 Refrigerating inlet 37 Refrigerating outlet 38 Side outlet 39 Front outlet 40 Straightening block 41 Guide rib 50 Second partition plate 51 Third partition plate 52 Second molded insulation material 53 Refrigerating suction port 54 Refrigeration cooler 60 Freezing cooling compartment 61 Fourth partition plate 62 Freezing suction port 63 Freezing outlet 64 Switchable compartment outlet 65 Freezing cooler 66 Freezing fan 67 Heater 70 Blower fan 71 Rotating fan 72 Fan casing 73 Fan suction port 74 Fan outlet 75 Fan mounting section 76 Casing mounting recess 77 Inclined surface 78 Inflection section 79 Flange section 80 Engagement claw 81 Damper 82 Refrigeration damper 83 Mild freezing compartment damper 84 Vegetable compartment damper 85 First drain groove 86 Second drain groove 87 Wiring groove 88 Locking piece 90 Blowout opening 91 Mild freezing compartment inlet 92 Mild freezing compartment outlet 93 Mild freezing compartment duct 94 Vegetable room inlet 95 Vegetable room outlet 96 Vegetable room duct 97 Flow straightening member 100 Wiring 101 Connector storage section

Claims (6)

Equipped with a storage room,
A cooling chamber in which a cooler is installed is formed on the rear side of the storage chamber,
a partition section that separates the storage chamber and the cooling chamber, and a blower fan that is disposed on a rear side of the partition section,
The partition portion is formed with a first drain groove for discharging condensation water generated in a fan casing of the blower fan to the outside of the fan casing.
refrigerator. a fan mounting portion for the blower fan is provided in the partition portion,
The partition portion is formed with a second drain groove for discharging condensation water generated in the fan mounting portion to the outside of the fan casing.
2. The refrigerator according to claim 1. A wiring groove is formed in the partition portion to lead out wiring of the blower fan,
an upper end of the wiring groove is disposed at a position higher than upper ends of the first drainage groove and the second drainage groove;
The refrigerator according to claim 2. The second drainage groove is disposed between the first drainage groove and the wiring groove.
The refrigerator according to claim 3. The wiring housed in the wiring groove is routed upward below the wiring groove and guided upward along the outer periphery of the fan casing.
The refrigerator according to claim 3. The fan casing has an outer periphery formed with a flange portion extending outward,
The partition portion is provided with a plurality of engagement means that engage with the flange portion and fix the fan casing to the partition portion.
2. The refrigerator according to claim 1.

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