KR20200140700A - Blower and refrigerator - Google Patents

Abstract

Provided is a blowing device by which a proper volume of cold air is distributed to each storage compartment of a refrigerator. The blowing device is to circulate the cold air in a main body of the refrigerator, and comprises a casing, an impeller received in the casing, and a support member for supporting the impeller to the casing. The impeller has a disk-shaped base plate supported by the support member to be able to rotate. The casing has an inner circumferential surface extended gradually away from the outer circumference toward a rotation direction of the impeller at a predetermined position on the outer circumference of the base plate, and a first case flow path formed between the outer circumference and the inner circumferential surface. An introduction port for introducing the cold air to a second case flow path branched and extended from the first case flow path is formed on the inner circumferential surface of the casing. The support member has fixing parts protruding outward from the outer circumference of the base plate and is fixed on the casing through the fixing parts. The end of the fixing parts positioned at the outermost side with respect to the outer circumference of the base plate is arranged in a non-distribution area other than a distribution area positioned between a first reference line for connecting a rotation axis to an edge of the introduction port in a direction opposite to the rotation direction and a second reference line for connecting the rotation axis to an edge of the introduction port in the rotation direction.

Description

Blower and Refrigerator {BLOWER AND REFRIGERATOR}

The present invention relates to a blower device and a refrigerator.

Recently, in refrigerators, the accommodation rooms are subdivided to suit the cooling target. And, each of the subdivided accommodation rooms is arranged at a location convenient for the user to use. In addition, in recent years, refrigerators are increasingly installing a ventilator having a large ventilation resistance and a ventilating passage having a small ventilation resistance so that cold air can be appropriately distributed to each accommodation chamber.

Thus, as a blower for sending cold air to the two ventilation paths, for example, Patent Document 1 includes a casing having a spiral inner circumferential surface, and an impeller rotatably accommodated in the casing, and between the inner circumferential surface of the casing and the blowing surface of the impeller A blower apparatus having a structure in which a first case flow path is formed and a second case flow path branching from the first case flow path is formed is disclosed.

According to the above-described blower device, not only can the large air volume and the fixed pressure cold air be blown from the first case flow path, but also the cool air of the small air volume can be blown from the second case flow path. Then, cool air is supplied from the first case flow passage to a ventilation passage having a large ventilation resistance, and cold air is supplied from the second case flow passage to a ventilation passage having a small ventilation resistance, so that the cold air can be appropriately distributed to each accommodation chamber.

Meanwhile, the impeller is fixed to the casing through the support member. And, the support member is fixed to the casing through a fixing portion protruding outward from the blowing surface of the impeller. Therefore, in this structure, the fixing part is installed inside the first case flow path. As a result, the flow of cold air in the first case flow path is obstructed by the fixing portion, and this causes a situation in which cold air of an appropriate air volume is not distributed from the first case flow path to the second case flow path.

JP 1995-127961 A

Accordingly, the present invention has made it a major object to obtain a blower device in which cold air having an appropriate air volume is distributed from the first case flow passage to the second case flow passage.

That is, the blowing apparatus according to the present invention is to circulate cold air inside the main body of the refrigerator, and includes a casing, an impeller accommodated in the casing, and a support member supporting the impeller to the casing, and the impeller is the support member In the blower apparatus having a disk-shaped base plate rotatably supported on the base plate, the casing has an inner circumferential surface extending gradually away from the outer circumference toward the rotation direction of the impeller at a predetermined position on the outer circumference of the base plate. And a first case flow path between the outer circumference and the inner circumferential surface, and an inlet port for introducing the cold air into a second case flow path branching from and extending from the first case flow path is formed on the inner circumferential surface of the casing. , The support member has a fixing portion protruding outward from the outer circumference of the base plate, is fixed to the casing through the fixing portion, and is located at the outermost side of the outer circumference of the base plate The end portion is non-distribution other than the distribution area between the first reference line connecting the rotation shaft and the rim of the inlet in the direction opposite to the rotation direction, and the second reference line connecting the rim of the rotation shaft and the rotation direction of the inlet. It is characterized in that it is arranged in the area.

In this case, since the outermost end of the base plate of the fixing part is disposed in the non-distribution area, the distribution area that most affects the air volume of the cold air distributed from the first case flow path to the second case flow path The flow of cold air inside becomes difficult to be disturbed by the fixing part. Accordingly, it is possible to distribute cool air of an appropriate air volume from the first case flow path to the second case flow path.

In addition, the entire fixing portion may be disposed in the non-distribution area. If this is the case, the flow of cold air in the distribution area is not obstructed by the fixture. Accordingly, it is possible to distribute cool air having a more appropriate air volume from the first case flow passage to the second case flow passage.

In addition, as a specific configuration of the blowing device, the inlet includes a third reference line connecting the rotation shaft and the predetermined position, and a fourth reference line formed by rotating 45° in the rotation direction from the third reference line to the rotation axis. For example, what is formed in the area between them.

If this is the case, cold air can be drawn from the first case flow path to the second case flow path without drastically reducing the maximum air volume and the maximum static pressure of the first case flow path.

In addition, as a specific configuration of the blowing device, the distance between the inner circumferential surface and the blowing surface on the third reference line may be 2 mm or more and 15 mm or less, and at the vertical line of the first reference line and the edge of the second case flow path The angle formed by the tangent of can be larger than 0° and smaller than 60°.

In addition, the refrigerator according to the present invention includes the blowing device, a first cold air flow path in communication with the first case flow path of the blowing device, and a second cold air flow path in communication with the second case flow path of the blowing device. Is to do.

In such a case, by arranging the compartments that are subdivided according to the cooling target in consideration of user convenience, even if it is necessary to install a ventilating path with different ventilation resistance as a ventilator that guides cold air to each compartment It will be able to blow the cold air of.

In addition, a refrigerator body in which the first cool air flow path and the second cold air flow path are provided therein may be further provided, and the blowing device may be detachably installed in the refrigerator body, and the air blower may be used as the suction port of the blowing device. A cooling unit for cooling the supplied cold air may be further provided, and the cooling unit may be installed detachably from the refrigerator body.

With such a configuration, the air blower and the cooling unit can be attached and detached from the refrigerator main body, thereby improving maintenance.

Here, the ratio of the amount of cool air drawn from the first case flow path to the first cold air flow path and the amount of cold air drawn from the second case flow channel to the second cold air flow path of the blowing device is the first cold air flow path and the second cold air flow path, respectively. In the case of having a discharge port for discharging air into the main body, the amount of discharge per unit time discharged from the discharge port of the second cool air flow path into the main body is a unit discharged from the discharge ports of the first cool air flow channel and the second cool air flow channel into the main body It can be made to be less than 20% of the total amount of discharge per hour.

With such an air volume ratio, the air volume of cold air introduced from the first case flow path to the second case flow path can be minimized, and the maximum air volume and maximum static pressure of the first case flow path can be increased.

As a specific configuration of the first cool air flow path and the second cool air flow path, one of the discharge ports of the first cool air flow path and the second cool air flow path is disposed on one side with respect to the rotation shaft, and the other side with respect to the rotation shaft. For example, those disposed on the opposite side to the one side.

As a more specific configuration, among the discharge ports of the first cool air flow path, the discharge port disposed farthest from the rotation shaft may be at least 500 mm away from the rotation shaft.

In addition, the first cold air flow path may extend upwardly inside the body.

If this is the case, it is possible to introduce a large amount of cold air having a low temperature to a position close to the inner wall of the upper surface inside the main body from the blowing device. For this reason, the cold air supplied to the upper part of the main body flows downward so that the inside of the main body can be efficiently cooled. As a result, it is possible to save energy in the refrigerator.

In addition, a first accommodation chamber to which cool air is supplied from a discharge port of the first cool air flow path, and a second accommodation chamber to which cool air is supplied from a discharge port of the second cool air flow path is further provided, and a volume of the second accommodation chamber is 1 It may be configured to be smaller than the volume of the accommodation room. In this case, among the discharge ports of the second cool air flow path, the discharge port disposed farthest from the rotation shaft may be 500 mm or more away from the rotation axis.

In such a case, by using a relatively small ice-making room or the like as the second storage room, and using a relatively large-volume freezing room or the like as the first storage room, it is possible to supply cold air with an appropriate air volume for each storage room.

According to the present invention configured as described above, cold air having an appropriate air volume can be distributed from the first case flow path to the second case flow path.

1 is a cross-sectional view schematically illustrating an internal structure of a refrigerator according to an embodiment.
2 is an enlarged cross-sectional view schematically illustrating a part of an internal structure of a refrigerator according to an embodiment.
3 is a perspective view illustrating a ventilation device of a refrigerator according to an embodiment.
4 is a central cross-sectional view illustrating an impeller and a support member of a ventilation apparatus of a refrigerator according to an exemplary embodiment.
5 is a front view schematically illustrating an air blower of a refrigerator according to an embodiment.
6 is a front view schematically illustrating a blower apparatus of a refrigerator according to an exemplary embodiment.

Hereinafter, a refrigerator according to the present invention will be described with reference to the drawings.

The refrigerator according to the present invention is mainly used in general homes. However, the present invention is not limited to household refrigerators, and can be applied to commercial refrigerators. In addition, the refrigerator according to the present invention includes not only a refrigerating chamber and a freezing chamber, but also a refrigerator including only a refrigerating chamber or a freezing chamber.

<Example 1>

As shown in FIG. 1, the refrigerator 100 according to the present exemplary embodiment includes a refrigerator body 10 and a cooling unit 20 connected to the refrigerator body 10. The cooling unit 20 according to the present embodiment is configured to be detachably connected to the refrigerator body 10 from the bottom side (in FIG. 1, the lower side) or the rear side (in FIG. 1, the right side).

The cooling unit 20 is a unit body 21 constituting the outer wall 100a of the refrigerator 100 together with the refrigerator main body 10, and each device constituting a refrigeration cycle mechanism is mounted. Each of the devices includes a compressor (not shown), a condenser (not shown), and an evaporator 22. In addition, the compressor and the condenser are installed to be disposed outside the main body of the refrigerator 100 while the cooling unit 20 is connected to the refrigerator main body 10. Meanwhile, the evaporator 22 is installed in the unit main body 21 so as to be disposed inside the main body of the refrigerator 100 with the cooling unit 20 connected to the refrigerator main body 10.

The refrigerator main body 10 has a case shape including a door 11 that opens toward the front (left in FIG. 1). The interior of the main body of the refrigerator main body 10 is divided into a front side (front side) and a rear side (rear side) by a partition member 12 when viewed from the door 11 side. For this reason, the cooling chamber CR is formed in front of the partition member 12 in the main body of the refrigerator main body 10 and a circulation path L is formed behind the partition member 12.

The cooling chamber CR is a space for accommodating food, etc. to be cooled. In that sense, the cooling chamber CR can be viewed as a storage chamber. Further, the cooling chamber CR is divided into a plurality of cooling spaces cr arranged vertically by shelves or the like. In addition, the circulation path L is a path for cooling and circulating cold air inside the main body. The circulation path L is formed to extend the inside of the main body in the vertical direction. Then, the circulation path L is configured to cool the cold air taken in from the cooling chamber CR and then discharge it to each cooling space cr of the cooling chamber CR.

Specifically, the circulation path (L) is a partition member (12) to communicate with each cooling space (cr) by blowing cool air from the inlet (H) formed in the partition member (12) to communicate with the lowermost cooling space (cr). It is configured to discharge cold air from the discharge port h formed in ). In addition, in the circulation path L, the evaporator 22 of the cooling unit 20 for cooling the cold air blown in from the inlet H and the blower 30 for blowing the cold air are in this order from the upstream side to the downstream side. It is arranged toward.

Further, the circulation path L has a first cool air flow path L1 and a second cool air flow path L2 constituting a downstream side from the blowing device 30. The first cold air flow path L1 guides the cold air sent out from the air blower 30 to a higher position than the air blower 30 and is formed in a duct shape. In addition, the second cool air passage L2 guides the cool air sent out from the air blower 30 downward than the air blower 30, and is formed in a duct shape.

When the first cool air flow path L1 and the second cool air flow path L2 are described in more detail, the first cold air flow path L1 is a plurality of the discharge ports h located above the cooling chamber CR. It has a discharge port (h) in communication with the cooling space (cr) of. Accordingly, the first cool air flow path L1 is adapted to supply the cool air delivered from the air blower 30 to each of the cooling spaces cr positioned above the main body. Here, the first cool air passage L1 of the present embodiment is configured to guide cool air to each of the other cooling spaces cr except for the lowermost cooling space cr. In addition, among the plurality of discharge ports h of the first cold air flow path L1, the discharge port h farthest from the blowing device 30 is the rotation shaft X of the impeller 50 provided in the blowing device 30 It is placed more than 500mm away from. More precisely, the discharge port h is set such that the distance along the first cold air flow path L1 from the rotational shaft X of the impeller 50 is 500 mm or more.

In addition, the second cool air passage L2 has a discharge port h communicating with at least one cooling space cr positioned below the cooling chamber CR among the discharge ports h. Accordingly, the second cool air passage L2 is adapted to supply the cool air sent from the blowing device 30 to the at least one cooling space cr positioned below the main body. Here, the second cool air passage L2 of the present embodiment is configured to guide (guide) the cool air to the lowermost cooling space cr.

In addition, in the present embodiment, the length of the first cool air passage L1 is longer than the length of the second cool air passage L2. In addition, the first cool air passage L1 is configured to have a greater ventilation resistance than the second cool air passage L2. In addition, the total volume of the cooling space cr through which cool air is supplied from the first cool air flow path L1 is larger than the total volume of the cooling space cr through which cool air is supplied from the second cold air flow path L2.

The evaporator 22 is a so-called heat exchanger and is configured to pass cold air through a plurality of fins. And the evaporator 22 is arrange|positioned between the inlet H of the circulation path L and the blower 30. For this reason, the cold air blown into the circulation path L from the inlet H is cooled while passing through the evaporator 22.

The blower device 30 is installed on the partition member 12. In more detail, the air blower 30 is installed with respect to the partition member 12 at a distance from the inner wall 10a on the rear side of the refrigerator body 10. Further, the blower 30 has a suction port 31 on a surface facing the inner wall 10a. Accordingly, the blowing device 30 is configured to distribute the cool air sucked in from the inlet 31 to the first cool air flow path L1 and the second cool air flow path L2.

All or a part of the partition member 12, specifically, a portion in which the air blower 30 is installed, is detachable from the refrigerator body 10. For this reason, the air blower 30 is also detachable from the refrigerator main body 10 together with a part of the partition member 12. The partition member 12 of the present embodiment has a structure that is divided up and down, and the lower partition member 12 is detachable from the refrigerator body 10. The blowing device 30 is installed on the lower partition member 12.

As shown in Figs. 3 and 4, the blowing device 30 includes a casing 40 having an inlet 31, an impeller 50 accommodated in the casing 40, and the impeller 50 in a casing 40 It is provided with a support member 60 to support it.

The casing 40 is to accommodate the impeller 50. Specifically, the casing 40 includes a casing body 41 that opens in one direction as shown in FIG. 3 and a cover 42 that closes the opening of the casing body 41. The cover 42 has a through hole 42a constituting the suction port 31. The cover 42 of this embodiment is configured to be fixed to the partition member 12 by means of screwing or the like. Further, the casing main body 41 is sandwiched between the cover 42 and the partition member 12 and is fixed thereto, and is integrated with the partition member 12 through this.

The casing main body 41 has an end surface S1a facing the suction port 31 and an inner circumferential surface S1b erected on the outer periphery (periphery) of the end surface S1a. At least a part of the inner circumferential surface S1b of the casing main body 41 is formed in a spiral (vortex shape). In addition, the impeller 50 is provided on the end surface S1a of the casing main body 41 through the support member 60.

The impeller 50 is a so-called centrifugal fan. Specifically, the impeller 50 is provided with a rotational axis (X) has a plurality of wings (52) erected in a direction from the base plate 51 and the base plate 51 of disc shape as shown in Fig. 4 have.

As shown in FIGS. 5 and 6, the plurality of blades 52 are disposed at intervals around the rotation axis X, and outward from the rotation axis X side (that is, the diameter of the base plate 51). Direction outside). Each blade 52 extends from the rotation axis X to pass through an axis extending in the radial direction of the base plate 51, and one end of the rotation direction side with respect to the axis line is the rotation axis X side (that is, the base plate It is located at the inner side in the radial direction of 51), and the other end on the side opposite to the direction of rotation with respect to the axis line is configured to reach the outer circumference 51e of the base plate 51. In addition, the impeller 50 has a blowing surface (S2) formed by the outer edges of the plurality of wings (52). The blowing surface S2 has a circular shape when viewed from the direction of the rotation axis X, and has a concentric shape with the outer circumference 51e of the base plate 51. In addition, the impeller 50 of the present embodiment extends along the blowing surface S2, and is provided with a reinforcing frame 53 connected to each wing 52 (see FIG. 4).

The support member 60 supports the impeller 50 on the end surface S1a of the casing body 41, as shown in FIG. 4. Specifically, the support member 60 includes a support plate 61 for supporting a rotating mechanism 70 such as a motor, and a plurality of fixing portions 62 protruding from the outer edge of the support plate 61. The support plate 61 of this embodiment has a structure to hold the rotation mechanism 70 in the center, and the impeller 50 is fixed to the shaft core 71 which protrudes from the rotation mechanism 70 and becomes the rotation shaft X. . In this state, each of the fixing portions 62 protrudes outward from the outer periphery 51e of the base plate 51 constituting the impeller 50. In addition, portions of the support plate 61 except for the respective fixing portions 62 of the present embodiment have a circular shape having a larger diameter than that of the base plate 51.

Next, the positional relationship between the casing 40, the impeller 50, and the support member 60 will be described in detail with reference to FIGS. 5 and 6.

As shown in FIG. 5, the impeller 50 gradually moves away from a predetermined position P1 with respect to the spiral inner circumferential surface S1b of the casing body 41 in the direction of rotation, as shown in FIG. They are installed facing each other. That is, the outer circumference 51e of the base plate 51 is arranged to be closest to the inner circumferential surface S1b at a predetermined position P1. Therefore, the outer circumference 51e of the base plate 51 is a portion located on the side of the rotation direction at the position P2 closest to the predetermined position P1 of the inner circumferential surface S1b (hereinafter referred to as the closest position P2). It is arrange|positioned so that this may gradually move away from the inner peripheral surface S1b. For this reason, in the casing body 41, a first case flow path l1 is formed between the inner circumferential surface S1b and the outer circumference 51e, which gradually expands toward the rotation direction of the impeller 50. The inner circumferential surface S1b and the blowing surface S2 are set so that the distance W between the positions closest to each other (between the predetermined position P1 and the closest position P2) is 2 mm or more and 15 mm or less. In addition, the casing body 41 has a second case flow path l2 extending branching from the first case flow path l1.

On the inner circumferential surface S1b of the casing body 41, the surface located on the side opposite to the rotational direction of the impeller 50 at a predetermined position P1, that is, a surface located on the downstream side of the first case flow path l1. A first outlet 32 for leading out cold air from the first case flow path l1 out of the casing body 41 is formed. The first case flow path l1 is in communication with the first cold air flow path L1 through the first outlet 32.

In addition, an introduction port 33 for introducing a part of the cold air flowing through the first case flow path l1 into the second case flow path l2 is formed on the inner peripheral surface S1b of the casing body 41. Specifically, on the inner peripheral surface S1b of the casing main body 41, the inlet 33 is provided on the surface located on the side of the rotation direction from the predetermined position P1, that is, the surface located upstream of the first case flow path l1. Is formed.

) 사이의 영역을 분배 영역(R1)이라 하고, 분배 영역(R1) 이외의 영역을 비분배 영역(R2)이라 한다. 이렇게 하면, 지지 부재(60)는 고정부(61)의 베이스판(51)의 외측 둘레(51e)에 대해 가장 바깥쪽에 위치하는 단부(61a)를 비분배 영역(R2)에 위치하도록 배치되어 있다.Here, the line connecting the rotation shaft X and the edge 33a on the opposite side of the rotation direction of the inlet 33 is the first reference line α, and the rotation shaft X and the inlet 33 The line connecting the edge 33b on the side of the rotation direction is referred to as a second reference line β. Also, in the first case flow path l1, the first reference line α and the second reference line (

A region between) is referred to as a distribution region R1, and a region other than the distribution region R1 is referred to as a non-distribution region R2. In this way, the support member 60 is arranged such that the end 61a located at the outermost side of the outer circumference 51e of the base plate 51 of the fixing portion 61 is located in the non-distribution region R2. .

In addition, if the end portion 61a of each of the fixing portions 61 is disposed in the non-distribution area R2, a part of the end portion 61a may be disposed in the distribution area R1. However, it is preferable that the whole is disposed in the non-distribution area R2 like the fixing part 61 of the present embodiment.

)과 제4 기준선(δ)이 일치하도록 형성되어 있다.In addition, the line connecting the rotation shaft X and the predetermined position P1 of the inner circumferential surface S1b (or the closest position P2 of the blowing surface S2) is referred to as the third reference line γ, and this third The line rotated by 45° in the rotation direction of the impeller 50 with the reference line γ as the center of the rotation axis X is referred to as a fourth reference line δ. Then, the introduction port 33 is formed in a region between the third reference line γ and the fourth reference line δ. Here, in the inlet 33 of the present embodiment, the first reference line α and the third reference line γ coincide, and the second reference line (

) And the fourth reference line δ are formed to match.

In addition, in the second case flow path l2, the edge 33a on the third reference line γ side of the inlet 33 is the starting point SP (in this embodiment, the same position as the predetermined position P1). ) Is extended. Here, the second case flow path l2 extends substantially in parallel with the first case flow path l1. Further, in the second case flow passage l2, a second outlet 34 for leading out cool air from the second case flow passage 12 is formed on the downstream side. In addition, the second case flow path l2 is in a state in which it is in communication with the second cold air flow path L2 through the second outlet 34.

)가 0°보다 크고 60° 보다 작아지도록 설정되어 있다. 여기서, 각도(

)는 수직선(p)에 대해 접선(t)을 시작점(SP)을 중심으로 바깥쪽으로 벌린 각도이다.In addition, the inner surface S4 extending from the starting point SP of the second case flow path l2 is an angle formed by the tangent line t at the starting point SP and the vertical line p of the first reference line α (

) Is set to be greater than 0° and less than 60°. Where, angle(

) Is the angle that the tangent line (t) is spread outward from the start point (SP) to the vertical line (p).

Next, a flow of cold air flowing through the circulation path L will be described with reference to FIGS. 1, 5 and 6.

First, as shown in FIG. 1, the cold air blown into the circulation path L from the lowermost cooling space cr through the inlet H is cooled while passing through the evaporator 22. Subsequently, the cold air cooled by passing through the evaporator 22 is sucked into the casing body 41 of the blowing device 30 through the suction port 31. The cold air sucked into the casing body 41 is introduced into the first case flow path l1 by centrifugal force caused by the rotation of the impeller 50, and at the same time, a part of the cold air introduced into the first case flow path l1 is introduced into the second case. It is introduced into the flow path l2. Subsequently, the cold air passing through the first case flow passage l1 without being introduced into the second case flow passage l2 is introduced into the first cold air flow passage L1 through the first outlet 32. In addition, the cold air introduced into the second case flow path l2 is introduced into the second cold air flow path L2 through the second outlet 34. Then, the cold air introduced into the first cold air flow path L1 is supplied to the cooling space cr above the blower 30 through the discharge port h. In addition, the cold air introduced into the second cold air flow path L2 is supplied to the cooling space cr below the blower 30 through the discharge port h.

<Other Examples>

Although the cooling chamber CR of the above embodiment is composed of one space divided by shelves, the cooling chamber CR may be composed of two spaces. For example, the cooling chamber CR is divided into a large-volume refrigerating chamber and a small-volume ice-making chamber. In this case, the blower 30 may be configured to supply cold air drawn from the first case flow path l1 to a large-capacity refrigerating chamber, and supply cold air drawn from the second case flow path l2 to a small-capacity ice making room. .

In addition, the blowing device 30 of the above embodiment supplies cool air to the cooling space cr above the blowing device 30 by the first case flow path l1, and the blowing device by the second case flow path l2. It is configured to supply cold air to the cooling space cr below (30). However, the present invention is not limited thereto, and for example, it may be configured to supply cold air to the cooling space cr above the blowing device 30 by both the first case flow path l1 and the second case flow path l2. .

In addition, the casing 40 of the above embodiment has a second case flow path l2 extending along the spiral inner circumferential surface S1b in the casing body 41, but the second case flow path l2 has a spiral inner circumferential surface S1b. ) May not be extended to follow.

)이 통과하는 테두리(33b)가 제4 기준선(δ) 보다 제3 기준선(γ) 측에 위치하도록 구성할 수도 있다. 즉, 도입구(32)는 제3 기준선(γ)과 제4 기준선(δ) 사이의 영역에 형성되도록 구성하면 된다.In addition, the inlet 33 of the above embodiment may be configured such that the edge 33a through which the first reference line α passes is positioned at the side of the fourth reference line δ rather than the third reference line γ. Similarly, the inlet 33 is the second reference line (

) May be configured to be positioned on the third reference line γ side rather than the fourth reference line δ. That is, the inlet 32 may be configured to be formed in a region between the third reference line γ and the fourth reference line δ.

Further, in the above embodiment, the entire inner circumferential surface S1b of the casing body 41 is formed in a spiral shape, but is not limited thereto. For example, a portion located on the inner peripheral surface S1b of the casing body 41 on the rotational direction side of the impeller 50 from the predetermined position P1 may be formed in a spiral shape.

In addition, in the above embodiment, the fixing part 61 of the support member 60 is configured to be fixed in a raised state from the end surface S1a of the casing body 41. However, for example, a groove in which the support member 60 is accommodated may be formed in the end surface S1a of the casing body 41, and the support member 60 may be inserted into the groove to be installed. In this case, since the fixing part 61 is accommodated in the groove, it can be kept in a state that does not protrude from the end surface S1a.

In addition, the blowing device 30 of the above embodiment may specifically use a turbo fan.

In addition, the present invention is not limited to each of the above embodiments, and various modifications are possible without departing from the spirit of the present invention.

100; Refrigerator
10; Refrigerator body
20; Cooling unit
22; evaporator
30; Blowing device
32; Exit
40; Casing
41; Casing body
S1a; End face
S1b; If you give it out
33; Inlet
50; Impeller
51; Base plate
51e; Outer circumference
52; wing
X; Rotating shaft
S2; Ventilation surface
60; Support member
61; Support plate
62; Fixed part
P1; Predetermined position
l1; Case 1 Euro
l2; Case 2 Euro
α; First baseline
β; Second baseline
γ; 3rd baseline
δ; Baseline 4
L1; 1st cold flow path
L2; 2nd cold flow path
H; Outlet

Claims (18)

A main body forming a storage chamber;
A cooling unit configured to form cold air; And
Includes; a blowing device provided to blow the cold air formed in the cooling unit to the storage chamber,
The blowing device,
A casing forming a first case flow path for guiding cold air to a portion of the storage chamber and a second case flow path for guiding cold air to another portion of the storage chamber;
An impeller accommodated in the casing; And
And a support member supporting the impeller on the casing and having a fixing part positioned on the first case flow path. The method of claim 1,
The casing includes a distribution area branching from the first case flow path to the second case flow path,
The fixing unit is disposed to be spaced apart from the distribution area. The method of claim 1,
The casing is formed to be located closest to the outer circumference of the impeller at a starting point of the first case flow path. The method of claim 1,
The casing is formed to increase the area of the first case flow path as the cold air flows. The method of claim 1,
The inner circumferential surface of the casing is formed to move away from the outer circumference of the impeller as the cold air flows. The method of claim 1,
The casing is formed such that the amount of cold air guided to the first case flow path is greater than the amount of cold air guided to the second case flow path. The method of claim 1,
The main body includes a first cool air passage connected to the first case passage and a second cool air passage connected to the second case passage,
A refrigerator having a length of the first cool air flow path longer than a length of the second cold air flow path. The method of claim 7,
The first cold air flow path has a plurality of discharge ports,
Among the plurality of discharge ports, a discharge port located farthest from the air blower is positioned to be spaced at least 500 mm away from the rotation shaft of the impeller along the first cold air flow path. The method of claim 7,
The first cold air passage extends toward an upper portion of the storage compartment. The method of claim 7,
A refrigerator provided to have a larger volume than another portion of the storage compartment receiving cool air from the second cool air flow path in a portion of the storage compartment receiving cool air from the first cold air flow path. The method of claim 7,
A refrigerator configured to have a flow resistance of the first cold air flow path greater than that of the second cold air flow path. The method of claim 1,
The casing includes an introduction port formed to guide a part of cold air from the first case flow path to the second case flow path,
A refrigerator formed such that an angle formed at both ends of the inlet port with respect to the rotation axis of the impeller is greater than 0° and less than 45°. The method of claim 12,
The inlet is a refrigerator positioned upstream of the first case flow path. The method of claim 1,
The tangent line at the start point of the second case flow path of the casing is formed to be greater than 0° and less than 60° with respect to a vertical line perpendicular to the reference line connecting the rotation axis of the impeller and the start point of the second case flow path. Refrigerator. The method of claim 1,
The cooling unit is a refrigerator that is detachably mounted on the main body. The method of claim 1,
The fixing part is provided to protrude outward from the outer circumference of the impeller in a radial direction. The method of claim 1,
At a position where the distance between the inner circumferential surface of the casing and the outer circumference of the impeller is closest, the distance between the inner circumferential surface of the casing and the outer circumference of the impeller is 2 mm or more and 15 mm or less. The method of claim 1,
The casing is formed such that the amount of cold air per unit time supplied to the storage compartment through the second case flow path is 20% or less of the amount of cold air per unit time supplied to the storage room through the first case flow path.

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