JP2014048036A - Refrigerator - Google Patents

Abstract

A refrigerator capable of suppressing vibrations and noise when driving a fan while suppressing an increase in the number of parts.
In a refrigerator including a fan 68 and a mounting member 71 for mounting the fan 68, the fan 68 includes a casing 100 and an impeller 101 rotatably supported by the casing 100, and the mounting member 71 is A first receiving portion 75 that contacts one side of the impeller 101 in the rotational axis direction X of the casing 100 and a second receiving portion 76 that contacts the other side of the impeller 101 in the rotational axis direction X of the casing 100. And at least one of the first receiving portion 75 and the second receiving portion 76 is provided so as to be elastically deformable in the rotation axis direction X.
[Selection] Figure 4

Description

  This embodiment of the present invention relates to a refrigerator.

  The refrigerator is provided with a cooling fan for sending cool air cooled by the cooler to the storage space, and a heat dissipating fan for cooling the compressor or the like in the machine room.

  When attaching such a fan to the refrigerator, in order to prevent vibration and noise during driving, a cushioning material such as soft tape or silicone rubber is provided on the peripheral surface of the casing that holds the impeller, and the shaft of the impeller in the casing. The cushioning material is also provided on both sides in the direction, and another cushioning material is interposed between the refrigerator-side mounting member and the casing (for example, see Patent Documents 1 and 2 below).

JP 2010-230286 A JP 2003-4360 A

  However, in the above refrigerator, a separate cushioning material is interposed between the refrigerator-side mounting member and the casing, which increases the number of parts and leads to an increase in cost. Then, it aims at providing the refrigerator which can suppress the vibration and noise at the time of a fan drive, suppressing the increase in a number of parts.

  The refrigerator of this embodiment is a refrigerator including a fan and an attachment member to which the fan is attached.The fan includes a casing and an impeller rotatably supported by the casing. A first receiving portion that contacts one side of the casing in the rotational axis direction of the impeller, and a second receiving portion that contacts the other side of the casing in the rotational axis direction of the impeller. At least one of the second receiving portions is provided so as to be elastically deformable in the direction of the rotation axis.

It is sectional drawing of the refrigerator which concerns on one Embodiment of this invention. It is a figure which shows the refrigerating cycle of the refrigerator of FIG. It is a perspective view of the machine room part of the refrigerator shown in FIG. It is an expanded sectional view of the machine room of the refrigerator of FIG. It is a disassembled perspective view of the fan unit in the refrigerator shown in FIG. It is a front view of an attachment member. It is a principal part enlarged view of FIG. It is a principal part enlarged view of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, the refrigerator 10 according to the present embodiment includes a cabinet 16 provided with a heat insulating space 13 between an outer box 12 made of a steel plate and an inner box 14 forming a storage space.

  The storage space formed inside the inner box 14 is partitioned into an upper refrigeration space 20 and a lower refrigeration space 40 by a heat insulating partition wall 17.

  The refrigerated space 20 is a space that is cooled to a refrigeration temperature (for example, 2 to 3 ° C.), and the interior is further divided vertically by a partition wall 21, and a plurality of mounting shelves are provided above the partition wall 21. A refrigerator compartment 22 is provided, and a vegetable compartment 24 in which a drawer-type storage container 26 is arranged below the partition wall 21 is provided.

  A freezing space 40 disposed below the vegetable compartment 24 via the heat insulating partition wall 17 is a space cooled to a freezing temperature (for example, −18 ° C. or lower), and is small in size with an ice making room 42 equipped with an automatic ice making machine. Freezer compartments (not shown) are provided on the left and right, and a freezer compartment 46 is provided below them.

  A refrigeration cooler 52 that cools the air in the refrigeration space 20 and a refrigeration blower fan 53 that blows the cold air cooled by the refrigeration cooler 52 to the refrigeration chamber 22 and the vegetable compartment 24 are provided at the rear of the refrigeration space 20. Is provided. Further, at the rear part of the freezing space 40, a freezing cooler 54 that cools the air in the freezing space 40, and the cold air cooled by the freezing cooler 54 is sent to the ice making chamber 42, the small freezing chamber, and the freezing chamber 46. A refrigeration blower fan 55 is provided.

  The refrigeration cooler 52 and the refrigeration cooler 54 constitute a refrigeration cycle 50 together with a compressor 51 and a condenser 56 housed in a machine room 19 provided at the lower back of the cabinet 16.

  As shown in FIG. 2, the refrigeration cycle 50 includes a compressor 51 that discharges a high-temperature and high-pressure gaseous refrigerant, a condenser 56 that receives the gaseous refrigerant discharged from the compressor 51 and liquefies heat, and a condenser A switching valve 57 provided on the outlet side of the cooler 56 for switching the refrigerant flow path, a refrigerating cooler 52 and a refrigerating cooler 54, and a refrigerating decompression device 58 as a throttling means for the coolers 52 and 54. The refrigerating cooler 52 and the refrigerating cooler 54 are circulated by circulating the refrigerant discharged from the compressor 51 by connecting them with a refrigerant pipe. Cool down.

  As shown in FIGS. 1, 3, and 4, the machine room 19 has a ceiling surface 61, a comp table 62 that forms the bottom surface of the machine room 19, and an upper part that partitions the back surface of the freezer room 46 and the machine room 19. The machine room front wall 63 inclined to the rear, the left and right side walls 65, and a back plate 66 detachably attached to the cabinet 16, are defined at the lower back of the cabinet 16. The ceiling surface 61 and the machine room front wall 63 are integrally formed by a bottom plate 67 of the cabinet 16.

  As shown in FIG. 3, the compressor 51 is placed on one side in the width direction of the machine room 19 (for example, the left side when viewed from the back of the machine room 19) on the comp table 62 via a vibration isolating rubber. ing. On the other side in the width direction of the machine room 19 (for example, the right side from the back of the machine room 19), a condenser 56, a fan unit 70, and an evaporating dish 85 are disposed.

  As shown in FIG. 4, the condenser 56 is, for example, a fin tube condenser including a refrigerant tube 56 a through which the refrigerant flows, and plate-like heat radiation fins 56 b provided in the refrigerant tube 56 a. It is provided in a duct 90 provided in the machine room 19 along the wall 63.

  The duct 90 is constituted by a duct main body 91 and a plate-shaped duct front surface portion 92, and an opening 93 is provided in the upper part of the back surface of the duct main body 91. As a result, the rear surface of the condenser 56 is exposed from the duct 90 by an opening 93 provided in the duct main body 91, and the lower portion is covered by the duct main body 91 and the duct front surface 92.

  The fan unit 70 includes a heat radiating fan 68 and a mounting member 71, and is disposed behind the condenser 56.

  The heat radiating fan 68 is a fan motor including a casing 100, an impeller 101 rotatably supported by the casing 100, and a motor 102 that rotationally drives the impeller 101, and is an air drilled in the comp base 62. External air taken from the inlet 86 through the duct 90 is blown to the condenser 56 and the compressor 51.

  The casing 100 has a rectangular shape with rounded corners when viewed from the rotation axis direction X of the impeller 101, and a cylindrical portion 103 in which the impeller 101 is disposed is provided at the center thereof.

  The mounting member 71 is a resin molded body such as polypropylene resin. As shown in FIG. 5, the unit rear surface portion 72 on which the heat radiating fan 68 is disposed, the lower edge portion and the left and right side edge portions of the unit rear surface portion 72. And a unit side surface portion 73 extending forward from the front side, and a heat radiating fan 68 is disposed behind the condenser 56 in the machine room 19.

  The unit rear surface portion 72 is provided with a frame portion 74 that protrudes rearward. The frame portion 74 is opened in a rectangular shape corresponding to the outer shape of the casing 100, and the casing 100 is arranged in the rotational axis direction X of the impeller 101 with a cushioning material 104 such as soft tape interposed inside the frame portion 74. Mating. Thereby, the heat radiating fan 68 is arranged with the rotation axis L of the impeller 101 facing the refrigerator front-rear direction X.

  As shown in FIGS. 5 to 8, at the front end portion of the frame portion 74, a plate portion 77 extends from the four corner portions of the rectangular frame portion 74 toward the inside of the frame portion 74, A pair of slits 78 are provided substantially horizontally in each of the four plate portions 77. The region sandwiched between the pair of slits 78 extends from the frame portion 74 in a cantilevered manner, and forms a first receiving portion 75 that is elastically deformable in the rotational axis direction (front-rear direction) X of the impeller. ing.

  In the first receiving portion 75, a tapered projection 79 that protrudes toward the casing 100 protrudes on the surface facing the casing 100 (the rear surface of the first receiving portion 75), and the tip portion of the projection 79 is the casing 100. Is in contact with one side (front side of the refrigerator) X1 in the rotation axis direction X.

  As shown in FIGS. 5 and 6, the rear end portion of the frame portion 74 is flanged inward from the frame portion 74 on one side (the right side in FIG. 6) with the rotation axis L of the impeller 101 interposed therebetween. A fixed claw 80 that extends in a flange shape is provided on the other side (left side in FIG. 6), and a movable claw 81 that extends inwardly from the frame portion 74 is provided. The movable claw 81 is provided between a pair of slits 82 extending forward from the rear end of the frame portion 74, and thereby provided so as to be elastically deformable outward of the frame portion 74 (outward in the radial direction of the impeller). (See FIGS. 5 and 7). The fixed claw 80 and the movable claw 81 provided at the rear end portion of the frame portion 74 constitute a second receiving portion 76 that comes into contact with the other side (rear side of the refrigerator) X2 of the rotation axis direction X in the casing 100 (FIG. 8). reference).

  In the present embodiment, the fixed claw 80 is provided longer along the frame portion 74 than the first receiving portion 75. Further, a reinforcing rib 81a that is inclined forward as it goes inward of the frame portion 74 is provided on the back surface of the movable claw 81, and this reinforcing rib 81a prevents elastic deformation of the movable claw 81 in the rotation axis direction X. Accordingly, the first receiving portion 75 is provided to be easily elastically deformed in the rotation axis direction X as compared with the fixed claw 80 and the movable claw 81 constituting the second receiving portion 76.

  The heat radiating fan 68 as shown in FIG. 5 is not fitted to the frame portion 74, and no external force acts on the fixed pawl 80 and the movable pawl 81 constituting the first receiving portion 75 and the second receiving portion 76. In the natural state, the rotation axis direction between the position where the casing 100 abuts on the fixed claw 80 and the movable claw 81 and the position where the casing 100 abuts on the first receiving portion 75 (the tip portion of the protrusion 84 in this embodiment). The interval of X is set smaller than the length dimension of the casing 100 of the heat radiating fan 68 in the rotation axis direction X.

  In order to attach the fan unit 70 having such a configuration to the machine room 19, first, the cushioning material 104 is pasted on the outer peripheral surface of the casing 100 of the heat radiating fan 68, and one side of the heat radiating fan 68 is fixed to the fixing claw 80 and the first receiver. After being fitted between the portions 75, the other end of the heat dissipation fan 68 is fitted into the frame portion 74 while elastically deforming the movable claw 81 provided on the frame portion 74 outward. The casing 100 is fitted inside the frame portion 74 with 104 interposed. As a result, the heat radiating fan 68 is supported by the frame portion 74 with the circumferential surface of the casing 100 interposing the cushioning material 104, and both end surfaces of the casing 100 in the rotation axis direction X are the first receiving portion 75 and the second receiving portion 76. Is elastically supported in the rotation axis direction X and attached to the attachment member 71.

  The attachment member 71 having the heat radiation fan 68 attached to the frame 74 has the front end of the unit side surface portion 73 attached to the lower edge portion and the left and right edge portions of the opening portion 93 provided in the upper rear portion of the duct body 91. It is done. As a result, the heat radiating fan 68 with the rotation axis L of the impeller 101 facing the refrigerator front-rear direction X is mounted in the machine chamber 19 so as to face the rear of the condenser 56 through the opening 93.

  As shown in FIG. 4, a substantially L-shaped fixing member 83 that extends rearward and protrudes upward is provided at the upper end of the unit rear surface portion 72 of the fan unit 70. The fixing unit 83 is screwed to the upper edge of the machine chamber 19 in a state where the upper end of the fan unit 70 is brought into contact with the surface 61 and the upper surface opening of the fan unit 70 is closed, so that the fan unit 70 is secured to the machine chamber 19. Fixed to.

  In the refrigerator of this embodiment as described above, the first receiving portion 75 of the first receiving portion 75 and the second receiving portion 76 that support the casing 100 of the heat radiating fan 68 in the rotation axis direction X is elastic in the rotation axis direction X. Since it is provided so as to be deformable, it is possible to elastically support the radiating fan 68 in the rotational axis direction X without providing cushioning material on both sides of the casing 100 in the rotational axis direction X, while suppressing an increase in the number of components. Vibration and noise when driving the fan can be suppressed.

  In the refrigerator of the present embodiment as described above, the first receiving portion 75 of the first receiving portion 75 and the second receiving portion 76 provided integrally with the attachment member 71 is provided so as to be elastically deformable in the rotation axis direction X. Therefore, the heat radiating fan 68 can be elastically supported in the rotation axis direction X without providing a cushioning material on both sides of the rotation axis direction X of the casing 100, and an increase in the number of parts can be suppressed while driving the fan. Vibration and noise can be suppressed.

  In the present embodiment, the attachment member 71 has a rotation axis direction X between the first receiving portion 75 and the second receiving portion 76 in the rotation axis direction X of the casing 100 in a natural state where no external force is applied. It is set smaller than the length dimension. Therefore, when the casing 100 is fitted inside the frame portion 74, at least one of the first receiving portion 75 and the second receiving portion 76 is elastically deformed in the direction away from the other along the rotation axis direction X, and the first The casing 100 can be reliably held between the receiving portion 75 and the second receiving portion 76.

  In addition, even if the mounting member 71 and the casing 100 have variations in dimensions due to manufacturing errors, at least one of the first receiving portion 75 and the second receiving portion 76 is elastically deformed according to the variations, which affects the manufacturing errors. The casing 100 can be reliably held without any trouble.

  In the present embodiment, the second receiving portion 76 includes a fixed claw 80 and a movable claw 81 that can be elastically deformed outward from the frame portion 74, and the fixed claw 80 and the movable claw 81 are arranged on the impeller 101. Since the rotary shaft L is interposed, the casing 100 of the heat dissipation fan 68 can be easily arranged inside the frame portion 74 and between the first receiving portion 75 and the second receiving portion 76.

  In the present embodiment, since a pair of slits 78 are provided in the plate part 77 extending inward from the frame part 74 and the first receiving part 75 is formed between the pair of slits 78, the rotation axis direction The first receiving portion 75 that can be elastically deformed to X can be formed integrally with the mounting member 71 with a simple configuration.

  Further, in the present embodiment, the first receiving portion 75 provided so as to be elastically deformable in the rotation axis direction X includes a tapered projection 79 that becomes thinner toward the casing 100, and the casing 100 has a tip at the tip of the projection 79. Therefore, even if elastically deformed, the first receiving portion 75 can contact the casing 100 without rattling and can reliably hold the casing 100 with the second receiving portion 76.

  In the present embodiment, since the reinforcing rib 81 a that is inclined forward as it goes inward of the frame portion 74 is provided on the back surface of the movable claw 81, the other side of the heat radiating fan 68 is fitted into the frame portion 74. At this time, the heat radiating fan 68 is inserted while pushing the movable claw 81 away from the frame portion 74, so that the heat radiating fan 68 can be easily inserted into the frame portion 74.

  In the above-described embodiment, the first receiving portion 75 is provided to be more easily elastically deformed in the rotation axis direction X than the second receiving portion 76, and the second receiving portion 76 is not substantially elastically deformed in the rotation axis direction X. However, the second receiving portion 76 may be provided to be elastically deformable in the rotation axis direction X, or both the first receiving portion 75 and the second receiving portion 76 may be provided to be elastically deformable in the rotation axis direction X.

  In the above-described embodiment, the heat radiating fan 68 that blows air to the condenser 56 and the compressor 51 has been described. However, the present invention is not limited to the refrigeration fan 53 that blows air to the refrigerator compartment 22 and the vegetable compartment 24. The present invention can be applied to a fan provided in a refrigerator, such as a freezing fan 55 that blows air to the ice making chamber 42, the small freezer compartment, and the freezer compartment 46.

  The above-described embodiments are presented as examples, and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments are included in the scope and gist of the invention, and are also included in the invention described in the scope of claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 10 ... Refrigerator 19 ... Machine room 20 ... Refrigeration space 40 ... Freezing space 42 ... Ice making room 46 ... Freezing room 50 ... Freezing cycle 51 ... Compressor 52 ... Refrigeration cooler 53 ... Refrigeration blower fan 54 ... Refrigeration cooler 55 Refrigeration fan 56 ... Condenser 68 ... Heat dissipation fan 70 ... Fan unit 71 ... Mounting member 72 ... Unit rear surface portion 73 ... Unit side surface portion 74 ... Frame portion 75 ... First receiving portion 76 ... Second receiving portion 77 ... Plate Part 78 ... Slit 79 ... Protrusion 80 ... Fixed claw 81 ... Movable claw 81a ... Reinforcement rib 82 ... Slit 83 ... Fixed member 84 ... Projection 85 ... Evaporating dish 86 ... Air inlet 90 ... Duct 91 ... Duct body 92 ... Duct front part 93 ... opening 100 ... casing 101 ... impeller 102 ... motor 103 ... cylindrical part 104 ... cushioning material

Claims (7)

In a refrigerator comprising a fan and a mounting member for attaching the fan,
The fan includes a casing and an impeller rotatably supported on the casing.
The mounting member includes a first receiving portion that contacts one side of the casing in the rotational axis direction of the impeller, and a second receiving portion that contacts the other side of the casing in the rotational axis direction of the impeller,
At least one of the first receiving portion and the second receiving portion is provided so as to be elastically deformable in the rotation axis direction.   The refrigerator according to claim 1, wherein a distance between the first receiving portion and the second receiving portion in the rotation axis direction is smaller than a length dimension of the casing in the rotation axis direction.   Either one of the first receiving portion and the second receiving portion includes a fixed claw provided on one side across the rotation shaft of the impeller and the blade on the other side across the rotation shaft of the impeller. The refrigerator according to claim 1, further comprising a movable claw provided so as to be elastically deformable outward in a radial direction of the vehicle. The first receiving portion is provided more easily to be elastically deformed in the direction of the rotation axis than the second receiving portion,
The mounting member includes a frame part into which the casing is fitted, a plate part extending inward in the radial direction of the impeller from the frame part, and a pair of slits provided in the plate part, The refrigerator according to any one of claims 1 to 3, wherein the first receiving portion is formed between the pair of slits.   At least one of the first receiving portion and the second receiving portion is provided so as to be elastically deformable in the direction of the rotation axis, and includes a protrusion protruding in a tapered shape toward the casing. The refrigerator according to any one of claims 1 to 4. The casing has a rectangular shape when viewed in the rotational axis direction;
6. At least one of said 1st receiving part and said 2nd receiving part is provided in the said rotating shaft direction so that elastic deformation is possible, and contact | abuts to the corner | angular part of the said casing. The refrigerator according to item.   The said attachment member is provided with the frame part by which the outer peripheral surface of the said casing is fitted, and the buffer material is arrange | positioned between the said frame part and the said casing, The any one of Claims 1-6 characterized by the above-mentioned. The refrigerator of Claim 1.

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