JP6765038B2 - Machine room cover and refrigerator - Google Patents

Description

The present disclosure relates to a refrigerator having a machine room cover covering the machine room.

There is a refrigerator with a machine room at the rear end of the upper surface. This type of refrigerator includes a cover that covers the machine room (see, for example, Patent Document 1).

FIG. 11 is a rear perspective view of a conventional refrigerator. As shown in FIG. 11, the upper plate and the back plate of the cover 142 are provided with a plurality of vents 143 and 144 for heat dissipation, respectively. The vent 143 opened in the upper plate is configured as an intake port, and the vent 144 opened in the back plate is configured as an exhaust port.

However, in the conventional configuration as described above, there is a problem that dust and the like enter the machine room through the vent 143.

Japanese Unexamined Patent Publication No. 2001-99552

The present disclosure solves the above-mentioned conventional problems, and provides a refrigerator provided with a machine room cover that suppresses the ingress of dust and the like from a vent.

Specifically, the machine room cover of the refrigerator according to the example of the present disclosure is a first having a plurality of guide portions and a plurality of first openings provided between adjacent guide portions among the plurality of guide portions. It includes a plate, a plurality of plate-shaped portions, and a second plate having a plurality of second openings provided between adjacent plate-shaped portions of the plurality of plate-shaped portions. One end of each of the plurality of guide portions is arranged so as to be close to one end of each of the plurality of plate-shaped portions. Further, each of the plurality of guide portions is arranged so as to have a predetermined distance between the other end and the other end of each of the plurality of plate-shaped portions. The upper part of each of the plurality of first openings is covered with at least one of the plurality of plate-shaped portions and at least one of the plurality of guide portions. Further, the lower part of each of the plurality of second openings is covered with at least one of the plurality of guide portions.

With such a configuration, it is possible to provide a machine room cover that suppresses the ingress of dust and the like from the vent into the machine room with a simple structure. Further, with such a configuration, the upper part of the first opening and the lower part of the second opening can be reliably covered, so that the ingress of dust and the like can be suppressed.

Further, in the machine room cover of the refrigerator according to the example of the present disclosure, one end of each of the plurality of guide portions may be a front end located on the front side of the first plate, and the other end of each of the plurality of guide portions may be. It may be the rear end located on the rear side of the first plate. Further, in the machine room cover of the refrigerator according to the example of the present disclosure, one end of each of the plurality of plate-shaped portions may be a rear end located on the rear side of the second plate, and the other end of each of the plurality of plate-shaped portions. May be the front end located on the front side of the second plate. Further, in the machine room cover of the refrigerator according to the example of the present disclosure, the front ends of the guide portions located on the front side of the first plate among the adjacent guide portions in the plurality of guide portions are adjacent to each other in the plurality of plate-shaped portions. It is located closer to the rear end of the plate-shaped portion located on the front side of the second plate of the adjacent plate-shaped portions than the front end of the plate-shaped portion located on the front side of the second plate of the plate-shaped portions. You may be. Further, in the machine room cover of the refrigerator according to the example of the present disclosure, the rear end of the guide portion located on the front side of the first plate among the adjacent guide portions in the plurality of guide portions is adjacent to the plurality of plate-shaped portions. It may be located closer to the rear end of the plate-shaped portion located on the rear side of the second plate than the front end of the plate-shaped portion located on the rear side of the second plate of the plate-shaped portion.

Further, in the machine room cover of the refrigerator according to the example of the present disclosure, a second predetermined distance may be formed between one end of the guide portion and one end of the plate-shaped portion. In this case, the first predetermined interval may be set to be larger than the second predetermined interval.

With such a configuration, the distance between the plate-shaped portion and the guide portion can be increased, so that the ventilation resistance of the air passing through the machine room cover can be suppressed.

Further, in the refrigerator according to the example of the present disclosure, the plate-shaped portion may have a curved portion in which the plate-shaped portion is folded back to one end side of the plate-shaped portion at the other end.

With such a configuration, it is possible to prevent a person's fingers or the like from touching the end portion of the plate-shaped portion and being injured.

Further, the machine room cover of the refrigerator according to the example of the present disclosure may include a cover member having a ventilation opening. In this case, the first plate may be held by the cover member via the second plate. Further, in this case, the peripheral portions of the first plate and the second plate may be covered with the cover member.

With such a configuration, it is possible to prevent a person's fingers or the like from touching the peripheral portion of the first plate or the second plate and being injured.

Further, in the machine room cover of the refrigerator according to the example of the present disclosure, the first plate and the second plate may be made of metal.

With such a configuration, processing becomes easy and manufacturing cost can be suppressed.

Further, the refrigerator according to the example of the present disclosure includes a heat insulating box, a machine room arranged at a step provided on the upper back surface of the heat insulating box, a compressor and a blower arranged in the machine room, and a machine room. A machine room cover that covers at least a part thereof is provided. The machine room cover may be composed of a machine room cover having at least one of the above characteristics.

With such a configuration, it is possible to provide a refrigerator having a machine room cover that prevents dust and the like from entering the machine room from the vent with a simple structure.

FIG. 1 is a vertical cross-sectional view of the upper part of the refrigerator according to an example of the embodiment of the present disclosure. FIG. 2 is a perspective view of the upper machine room side of the refrigerator according to an example of the embodiment of the present disclosure. FIG. 3 is a perspective view of a state in which the machine room cover of the upper machine room of the refrigerator is removed according to an example of the embodiment of the present disclosure. FIG. 4 is a partial perspective view of the windward cover of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure. FIG. 5 is an exploded perspective view of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure as viewed from the upper surface side of the windward cover. FIG. 6 is a perspective view seen from the upper surface side of the first plate of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure. FIG. 7 is a perspective view seen from the upper surface side of the second plate of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure. FIG. 8 is an exploded perspective view of the cover member of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure as viewed from the lower surface side. FIG. 9 is a cross-sectional perspective view of a cover member of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure in FIG. 4 taken along line 9-9. FIG. 10 is a cross-sectional view of a main part of a cover member of a machine room cover of a refrigerator according to an example of the embodiment of the present disclosure. FIG. 11 is a perspective view seen from the back side of the conventional refrigerator.

Hereinafter, examples of the embodiments of the present disclosure will be described with reference to the drawings, but the present disclosure is not limited to the following embodiments.

(Embodiment)
FIG. 1 is a vertical cross-sectional view of the upper part of the refrigerator according to an example of the embodiment of the present disclosure. FIG. 2 is a perspective view of the upper machine room side of the refrigerator according to an example of the embodiment of the present disclosure. FIG. 3 is a perspective view of a state in which the machine room cover of the upper machine room of the refrigerator is removed according to an example of the embodiment of the present disclosure.

As shown in FIG. 1, the heat insulating box 31 of the refrigerator 30 is composed of an outer box 32 mainly made of a steel plate and an inner box 33 molded of a resin such as ABS resin. The inside of the heat insulating box 31 is filled with a foamed heat insulating material 34 such as hard urethane foam as a heat insulating material. With such a configuration, the inside of the refrigerator and the surroundings are insulated. Further, a vacuum heat insulating material 35 having higher heat insulating performance than the foam heat insulating material 34 is attached to the inside of the outer box 32 in a form of being embedded in the foam heat insulating material 34. With such a configuration, the heat insulating performance of the heat insulating box 31 can be improved. A space is provided in the upper part of the back surface of the heat insulating box 31 so that the rear end portion of the top surface and the upper end portion of the back surface are recessed inside the refrigerator 30. An upper machine room 36 is arranged in this space.

As shown in FIGS. 1 and 2, the upper surface side and the back surface side of the upper machine room 36 are covered by the machine room cover 42. The machine room cover 42 includes a central cover 43 made of a steel plate covering the central portion, an upwind cover 44 installed on the leeward side of the blower 38, and a leeward cover 45 installed on the leeward side.

As shown in FIG. 3, inside the upper machine room 36, an air-cooled condenser 37, a blower 38, and a compressor 39 are installed in order from the windward side (from the front side in the drawing). By driving the blower 38, the air-cooled condenser 37 and the compressor 39 are air-cooled.

The blower 38 is attached to the blower fixing member 40. The blower fixing member 40 divides the air passage in the upper machine room 36 into the windward side and the leeward side of the blower 38. Further, above the air-cooled condenser 37, a bypass air passage 41 through which the outside air directly sucked into the blower 38 passes without passing through the air-cooled condenser 37 is provided. The bypass air passage 41 directly supplies the outside air to the blower 38 when the air-cooled condenser 37 is blocked by dust or the like. It is desirable that the bypass air passage 41 has a space of 5 to 15 mm, which corresponds to a height of about 10% to 15% of the air-cooled condenser 37. If the height of the bypass air passage 41 is less than 5 mm (10%), the air volume is significantly reduced when the air-cooled condenser 37 is completely blocked, and if the height of the bypass air passage 41 is higher than 15 mm (15%), The amount of air passing through the air-cooled condenser 37 decreases, and sufficient heat dissipation capacity cannot be obtained.

As described above, by having a structure assuming that the air-cooled condenser 37 is closed, the reliability of the refrigerator 30 can be ensured for a long period of time even in a situation where maintenance is not performed in a general household or the like.

Next, the details of the upwind cover 44 and the leeward cover 45 will be described below. Since the leeward cover 45 is configured to be substantially symmetrical with the leeward cover 44, the leeward cover 44 will be described as an example in the present embodiment.

FIG. 4 is a partial perspective view of the windward cover of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure. FIG. 5 is an exploded perspective view of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure as viewed from the upper surface side of the windward cover. FIG. 6 is a perspective view seen from the upper surface side of the first plate of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure. FIG. 7 is a perspective view seen from the upper surface side of the second plate of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure. FIG. 8 is an exploded perspective view of the cover member of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure as viewed from the lower surface side. FIG. 9 is a cross-sectional perspective view of a cover member of the machine room cover of the refrigerator according to an example of the embodiment of the present disclosure in FIG. 4 taken along line 9-9. FIG. 10 is a cross-sectional view of a main part of a refrigerator cover member according to an example of the embodiment of the present disclosure. In FIGS. 9 and 10, the left side of the paper is the front side of the refrigerator 30.

The windward cover 44 is mainly composed of a base member 46 and a cover member 47. The base member 46 is a substantially L-shaped resin member formed by injection molding. The base member 46 is preferably made of a flame-retardant resin, but may be made of a non-flame-retardant resin. The base member 46 is provided at the corners of the top surface portion 461, the back surface portion 462, and the top surface portion 461 and the back surface portion 462, and has a transport grip portion 463 for the operator to grip when transporting the refrigerator 30. I have. The back side of the top surface portion 461 and the upper side of the back surface portion 462 are recessed inside the refrigerator, and a space for a palm gripping the transport grip portion 463 is formed.

The top surface portion 461 is located on the upper surface side of the upper machine room 36. As shown in FIG. 5, the top surface portion 461 is provided with a plurality of top surface ventilation holes 461a. The top surface vent hole 461a has a shape in which the size of each hole is as large as possible while leaving a minimum area for ensuring the torsional and tensile strength of the top surface portion 461. The top ventilation hole 461a, for example, leaves a crosspiece having a width of about 15 mm that connects the opposite sides of the outer periphery of the top surface portion 461, and a square hole is formed in the longitudinal direction of the windward cover 44 (see FIG. 4) (refrigerator 30). A total of 16 pieces are provided, 4 in the depth direction and 4 in the short side (width direction of the refrigerator 30). The longitudinal direction of the top ventilation hole 461a is substantially parallel to the longitudinal direction of the windward cover 44.

The back surface portion 462 includes a plurality of back surface vent holes 462a. The back ventilation hole 462a is composed of a plurality of slits having a width of about 5 mm. The longitudinal direction of the back ventilation hole 462a is substantially parallel to the lateral direction of the windward cover 44.

Outside air can be taken into the upper machine room 36 through the top ventilation hole 461a or the back ventilation hole 462a.

The cover member 47 includes a first plate 48 and a second plate 49. The cover member 47 is attached at a position that covers the top surface portion 461. The cover member 47 is fixed to the base member 46 by fitting the hook-shaped claws provided on the cover member 47 into the mounting holes provided on the top surface portion 461. The cover member 47 may be fixed to the base member 46 with screws.

The cover member 47 includes a frame portion 471 and a ventilation opening 472 provided in the central portion of the frame portion 471. The cover member 47 is made of a resin member formed by injection molding. The cover member 47 is made of, for example, a flame-retardant resin. The frame portion 471 is provided with an outer rib portion 473 projecting to the lower surface side around the frame portion 471. The outer rib portion 473 secures the torsional and tensile strength of the cover member 47. The ventilation opening 472 is a substantially convex hole having a narrow width on the front side of the refrigerator 30. A first plate 48 and a second plate 49 are arranged in the ventilation opening 472.

As shown in FIG. 6, the first plate 48 is made of a metal plate having a substantially convex shape corresponding to the substantially convex shape of the ventilation opening 472. The substantially convex protruding portion of the first plate 48 is located on the front side of the refrigerator 30. The first plate 48 is formed by, for example, pressing from a single metal plate. The first plate 48 includes a plurality of first openings 481 and guide portions 482 provided between the first openings 481. The longitudinal direction of the first opening 481 is substantially parallel to the lateral direction of the first plate 48 (the width direction of the refrigerator 30). Depending on the shape of the first plate 48, the longitudinal length of some of the first openings 481 of the plurality of first openings 481 is shorter than the longitudinal length of the other first openings 481. In the present embodiment, the first plate 48 has a total of nine first openings 481 including seven long first openings 481 and two short first openings 481. I have.

The first plate 48 includes a plurality of guide portions 482. The guide portion 482 includes a flat surface portion 482a provided between the first opening portions 481 and an inclined portion 482b that rises from one end of the flat surface portion 482a. A bent portion 482b1 is provided at the upper end of the inclined portion 482b of the first plate 48. As shown in FIG. 10, the bent portion 482b1 is a plane substantially parallel to the flat surface portion 482a. Further, the bent portion 482b1 extends from the upper end of the inclined portion 482b to the side opposite to the side on which the flat surface portion 482a is provided. The inclined portion 482b and the bent portion 482b1 are formed by bending a metal plate located in the first opening 481 before press working.

The longitudinal direction of the guide portion 482 is substantially parallel to the lateral direction of the first plate 48. Depending on the shape of the first plate 48, the longitudinal length of some of the guide portions 482 of the plurality of guide portions 482 is shorter than the longitudinal length of the other guide portions 482. In the present embodiment, the first plate 48 includes six guide portions 482 having a long length and two guide portions 482 having a short length, for a total of eight guide portions 482. The first plate 48 is provided with a first hole 483 at the center of both ends in the longitudinal direction.

As shown in FIG. 7, the second plate 49 is made of a metal plate having substantially the same shape as the first plate 48. The second plate 49 is formed by, for example, pressing from a single metal plate. The second plate 49 includes a plurality of second openings 491 and a plate-shaped portion 492 provided between the second openings 491. As shown in FIG. 10, a curved portion 4921 bent to the lower surface side in a substantially arc shape is provided at one end of the end portion of the plate-shaped portion 492 in the lateral direction. As shown in FIG. 8, the side where the curved portion 4921 is provided is the side of the plate-shaped portion 492 where the convex protruding portion of the second plate is provided.

The longitudinal direction of the second opening 491 is substantially parallel to the lateral direction of the second plate 49 (the width direction of the refrigerator 30). Depending on the shape of the second plate 49, the longitudinal length of some of the second openings 491 of the plurality of second openings 491 is shorter than the longitudinal length of the other second openings 491. .. In the present embodiment, the second plate 49 has seven long second openings 491 and one short second opening 491, for a total of eight second openings 491. I have. The second plate 49 includes six long plate-shaped portions 492 and one short plate-shaped portion 492, for a total of seven second openings 491.

As shown in FIGS. 7 and 8, the second plate 49 is provided with substantially L-shaped stepped portions 493 at both ends in the longitudinal direction. The stepped portion 493 extends toward the outside of the second plate 49 at a substantially right angle from the end portion of the second plate 49 to the first extending portion 493a extending toward the first plate 48 side and at a substantially right angle from the first extending portion 493a. A second extension portion 493b is provided. A second hole 494 is provided in the central portion of the second extension portion 493b.

The first plate 48 and the lower surface of the second extension 493b of the second plate 49 (the surface on the first plate 48 side) and the upper surface of the first plate 48 (the surface on the second plate 49 side) are in close contact with each other. It is overlapped with the second plate 49 (see FIG. 8). As shown in FIG. 8, the first plate 48 and the second plate 49 are screws 50 penetrating the first hole 483 and the second hole 494, and are fixed to the cover member 47 from the lower surface side.

The first plate 48 includes n first openings 481 and (n-1) guide portions 482. The second plate 49 includes (n-1) second openings 491 and (n-2) plate-shaped portions 492. However, n is an integer of 3 or more. The plate-shaped portion 492 of the second plate 49 is provided at a position offset from the guide portion 482 of the first plate 48.

By superimposing the first plate 48 and the second plate 49, each part of the first plate 48 and each part of the second plate 49 have the following positional relationship.

First, the positional relationship in the height direction will be described.

One end of the guide portion 482 (guide portion 482X in FIG. 10) is close to one end of the plate-shaped portion 492 (plate-shaped portion 492X in FIG. 10). Specifically, the upper end of the inclined portion 482b of the first plate 48 is close to the end portion of the plate-shaped portion 492 on the side where the curved portion 4921 is not provided. More specifically, the bent portion 482b1 is close to the end portion of the plate-shaped portion 492X on the side where the curved portion 4921 is not provided. The bent portion 482b1 is located below the lower surface of the plate-shaped portion 492X and above the end of the curved portion 4921. That is, a predetermined first gap C1 (second predetermined interval) is formed between the lower surface of the plate-shaped portion 492X and the upper end of the inclined portion 482b or the bent portion 482b1. The first gap C1 is smaller than the height of the curved portion 4921 (distance between the plate-shaped portion 492X and the tip of the curved portion 4921).

As will be described later, it is desirable to provide the first gap C1 in order to suppress abnormal noise. However, the first gap C1 may be omitted. That is, the plate-shaped portion 492X and the inclined portion 482b may be in contact with each other. Further, although a part of the plate-shaped portion 492X and the inclined portion 482b are in contact with each other, the first plate 48 and the second plate 49 are manufactured between the other plate-shaped portion 492X and the inclined portion 482b. There may be a gap due to the variation in.

The other end of the guide portion 482X has a second gap C2 (first predetermined interval) between the other end of the plate-shaped portion 492Y adjacent to the plate-shaped portion 492X to which one end of the guide portion 482X is close. .. The plate-shaped portion 492Y is a plate-shaped portion 492 adjacent to the side of the plate-shaped portion 492X where the curved portion 4921 is not provided. Specifically, the end portion of the flat surface portion 482a of the guide portion 482X (the end portion on the side where the inclined portion 482b is not provided) is located between the end portion of the curved portion 4921 of the plate-shaped portion 492Y and the second end portion. It has a gap C2. The second gap C2 is larger than the first gap C1 depending on the height of the inclined portion 482b.

Next, the positional relationship between the first plate 48 and the second plate 49 in the longitudinal direction will be described.

As shown in FIG. 10, the upper portion of the first opening 481 of the first plate 48 is covered with a plate-shaped portion 492X of the second plate 49 and a part of the guide portion 482X of the first plate 48. Specifically, the upper part of the first opening 481 is covered with the plate-shaped portion 492X of the second plate 49, the inclined portion 482b of the first plate 48, and the bent portion 482b1. When the inclined portion 482b does not include the bent portion 482b1, the upper part of the first opening 481 is covered with the plate-shaped portion 492X of the second plate 49 and the inclined portion 482b of the first plate 48.

Further, the lower part of the second opening 491 of the second plate 49 is covered with a part of the guide portion 482X of the first plate 48. Specifically, the lower part of the second opening 491 is covered with the bent portion 482b1, the inclined portion 482b, and the flat surface portion 482a of the first plate 48. When the inclined portion 482b does not include the bent portion 482b1, the lower portion of the second opening 491 is covered with the inclined portion 482b and the flat surface portion 482a of the first plate 48.

In other words, the tip of the bent portion 482b1 of the guide portion 482X of the first plate 48 is a plate-shaped portion 492X from the end portion of the plate-shaped portion 492X of the second plate 49 on the inclined portion 482b side of the guide portion 482X. It is located on the center side of the width in the lateral direction of. Specifically, the tip of the bent portion 482b1 of the guide portion 482X is located closer to the curved portion 4921 than the end portion of the plate-shaped portion 492X on the side where the curved portion 4921 is not provided. When the inclined portion 482b does not include the bent portion 482b1, the tip of the inclined portion 482b of the guide portion 482X is a plate from the end portion of the plate-shaped portion 492X on the inclined portion 482b side of the guide portion 482X. It is located on the center side of the width of the shape portion 492X in the lateral direction. Alternatively, the tip of the inclined portion 482b of the guide portion 482X is located closer to the curved portion 4921 than the end portion of the plate-shaped portion 492X on the side where the curved portion 4921 is not provided.

The end portion of the flat portion 482a of the guide portion 482X is formed from the end portion of the plate-shaped portion 492Y adjacent to the plate-shaped portion 492X to which one end of the guide portion 482X is close to the end portion of the guide portion 482X on the flat surface portion 482a side. It is located on the central side of the plate-shaped portion 492Y. Specifically, the tip of the flat surface portion 482a of the guide portion 482X is located on the side opposite to the curved portion 4921 side from the end portion of the plate-shaped portion 492Y on the side where the curved portion 4921 is provided.

Next, the positional relationship between the first plate 48 and the second plate 49 and the cover member 47 will be described.

As shown in FIG. 8, the cover member 47 is provided with a plurality of inner rib portions 474 protruding toward the lower surface side on both sides of the ventilation opening 472 in the lateral direction. The cover member 47 is provided with n inner rib portions 474 on both sides of the ventilation opening 472 in the lateral direction. In the present embodiment, the cover member 47 is provided with eight inner rib portions 474 at both side ends of the ventilation opening 472 in the lateral direction.

The inner rib portion 474 is inserted into the second opening 491 near both ends in the longitudinal direction of the second opening 491. Further, the plate-shaped portion 492 of the second plate 49 is inserted into a recess between the inner rib portions 474. The frames at both ends of the second plate 49 in the lateral direction (both sides of the second opening 491) are arranged (inserted) between the inner rib portion 474 and the outer rib portion 473 of the cover member 47. Both ends of the second plate 49 in the longitudinal direction are covered with the outer rib portion 473 of the cover member 47.

Both ends of the inclined portion 482b of the first plate 48 in the longitudinal direction are close to the side surface of the inner rib portion 474. Further, the peripheral end portion of the first plate 48 is covered with the outer rib portion 473 of the cover member 47. That is, the peripheral ends of the first plate 48 and the second plate 49 are covered with the cover member 47.

A predetermined gap is provided between the plate-shaped portion 492 of the second plate 49 and the bottom of the recess between the inner rib portions 474. Between the frames at both ends of the second plate 49 in the lateral direction and the inner rib portions 474 of the cover member 47, or between the frames at both ends of the second plate 49 in the lateral direction and the outer rib portions 473, A predetermined gap is provided for each. A predetermined gap is provided between both ends of the inclined portion 482b of the first plate 48 in the longitudinal direction and the side surface of the inner rib portion 474. A predetermined gap is provided between the peripheral ends of the first plate 48 and the second plate 49 and the outer rib portion 473 of the cover member 47. That is, the cover member 47, the first plate 48, and the second plate 49 are fixed with screws 50 by providing a predetermined gap between the first plate 48 and the second plate 49 and the cover member 47. It is configured so that it does not come into contact with each other except in places.

As shown in FIGS. 9 and 10, the inclined portion 482b is arranged so that the end portion on the front side of the refrigerator 30 is higher than the end portion on the back side, and is inclined downward toward the back side. Make up the louver. It is desirable that the inclination of the inclined portion 482b is 45 ° or less with respect to the horizontal plane. This is because when the exhaust gas of the upper machine room 36 discharged from the gap of the inclined portion 482b hits the ceiling where the refrigerator 30 is installed, the angle formed with the horizontal is reduced, so that the front surface of the refrigerator 30 is smoother. This is to change the direction of the exhaust.

The machine room cover 42 is integrated with the central cover 43, the leeward cover 44, and the leeward cover 45, and is fixed to the heat insulating box 31 with screws so as to cover the upper machine room 36 (FIGS. 1 and FIG. 2).

The upper surface of the central cover 43 is higher than the upper surface of the heat insulating box 31 in a state of being attached to the heat insulating box 31. The upper surface of the central cover 43, the upper surface of the carrying grip portion 463 (see FIG. 4), and the uppermost portion of the cover member 47 are substantially the same height. The flat surface portion 482a (see FIGS. 8 to 10) of the first plate 48, the top ventilation hole 461a (see FIG. 5), and the upper surface of the heat insulating box 31 (see FIGS. 1 and 3) are substantially the same height. Is. The top ventilation hole 461a may be lowered from the upper surface of the heat insulating box 31 as long as an appropriate dimension that does not correspond to the arrangement of parts in the upper machine room 36 can be secured. Further, the length of the inclined portion 482b (see FIGS. 9 and 10) of the first plate 48 in the longitudinal direction is substantially the same as the width of the carrying grip portion 463 (see FIG. 4).

The operation and operation of the refrigerator 30 configured as described above will be described below.

First, the operation of the refrigerator 30 and the heat generation and exhaust heat of the upper machine room 36 will be described.

When the compressor 39 (see FIG. 1) starts to drive to cool the storage chamber of the refrigerator 30, the refrigerant in the refrigeration cycle circuit is compressed, and the discharge refrigerant pipe connected to the discharge port of the compressor 39 (FIG. 1). (Not shown) and introduced into the air-cooled condenser 37 (see FIG. 3). Then, the compressor 39 and the air-cooled condenser 37 generate heat.

When the blower 38 is driven, the windward side of the upper machine room 36 becomes negative pressure and passes through the top ventilation hole 461a or the back ventilation hole 462a (see FIG. 5) provided in the windward cover 44 (see FIG. 2). , The air outside the upper machine room 36 is taken into the upper machine room 36. The air-cooled condenser 37 and the compressor 39 are cooled by the air taken in. On the contrary, the warmed air passes through the top ventilation hole 461a or the back ventilation hole 462a provided in the leeward cover 45 (see FIGS. 4 and 5), and is discharged to the outside of the upper machine room 36 again. In this way, the excessive temperature rise of the air-cooled condenser 37 and the compressor 39 is suppressed, and the reliability of the refrigerator 30 is ensured.

In general, since warm air has a property of flowing upward, the air discharged to the outside of the upper machine room 36 tends to flow upward. In particular, when the refrigerator 30 is installed in a limited space such as a system kitchen, it may be installed close to the left and right side surfaces of the refrigerator 30 and the wall facing the back surface. In such a case, the warm air discharged from the upper machine room 36 tends to stay above the upper machine room 36. At this time, since the windward side of the upper machine room 36 has a negative pressure due to the drive of the blower 38, the warm air staying above the upper machine room 36 is directly introduced from the windward cover 44 to the upper machine room 36. To. If the temperature of the introduced air is high, the amount of heat dissipated from the air-cooled condenser 37 and the compressor 39 decreases, the temperature of the parts rises, and reliability cannot be ensured.

However, in the present embodiment, a louver composed of a plurality of guide portions 482 is arranged above the top ventilation hole 461a provided on the leeward cover 45. Further, the inclination of the inclined portion 482b of the guide portion 482 can give a dynamic pressure to flow the air discharged from the upper machine room 36 to the front side of the refrigerator 30. With such a configuration, it is possible to suppress the accumulation of warm air above the upper machine room 36 and send it out to the front side of the refrigerator 30. With such a configuration, it is possible to prevent the warm air discharged from the upper machine room 36 from being introduced from the windward cover 44 into the upper machine room 36 as it is, and it is possible to improve the reliability of the refrigerator 30.

Similarly, a louver composed of a plurality of guide portions 482 is arranged above the top ventilation hole 461a provided on the windward cover 44. With such a configuration, the air in front of the windward cover 44 (front side of the refrigerator 30) can be preferentially introduced into the upper machine room 36. With such a configuration, it is possible to prevent the air above the upper machine room 36 from being introduced into the upper machine room 36. That is, it is possible to prevent the warm air discharged from the upper machine room 36 and staying, and the warm air above the upper machine room 36 warmed through the central cover 43 from being introduced into the upper machine room 36. Therefore, with such a configuration, the temperatures of the air-cooled condenser 37 and the compressor 39 can be lowered.

Further, the upper part of the top surface ventilation hole 461a is covered with the cover member 47. Further, the upper portion of the first opening 481 of the first plate 48 of the cover member 47 is covered with a plate-shaped portion 492X of the second plate 49 and a part of the guide portion 482X of the first plate 48. With such a configuration, even if dust or the like falls on the cover member 47 from above, it can be prevented from entering the upper machine room 36 through the top ventilation hole 461a.

In the event of a house fire, sparks flying from outside the refrigerator 30 may spread the fire from inside the upper machine room 36 to the heat insulating box 31. Since the heat insulating box 31 made of the foamed heat insulating material 34 or the like is flammable, it may lead to a large damage of a house fire. However, the upper part of the top ventilation hole 461a is covered with the cover member 47, and the upper part of the first opening 481 of the first plate 48 of the cover member 47 is a part of the first plate 48 and the second plate 49. It is covered with a part. With such a configuration, even if sparks fall on the cover member 47 from above, it is possible to prevent the sparks from entering the upper machine room 36 through the top ventilation hole 461a.

Further, the first plate 48 and the second plate 49 of the cover member 47 are each made of metal. The cover member 47 is made of a flame-retardant resin. With such a configuration, it is possible to prevent the cover member 47 from burning due to sparks.

The first plate 48 and the second plate 48 and the second plate 48 and the second plate 48 and the guide part 482 are arranged above the first opening 481 and the guide part 482 is arranged below the second opening 491. When the plate 49 is integrally molded, the molding die cannot be simply punched up and down (it cannot be simply molded using the upper die and the lower die), so that the manufacturing cost is high.

However, in the present embodiment, the louver can be formed by superimposing the first plate 48 and the second plate 49. With such a configuration, the manufacturing cost can be suppressed. Further, since the first plate 48 and the second plate 49 are made of metal, a predetermined shape can be formed by press working. Therefore, with such a configuration, the manufacturing cost can be further suppressed.

The peripheral ends of the first plate 48 and the second plate 49 are covered by the outer rib portion 473 or the inner rib portion 474 of the cover member 47. With such a configuration, it is possible to prevent the user of the refrigerator 30 or the fingers of the operator when transporting the refrigerator 30 from touching the end portion of the first plate 48 or the second plate 49 and damaging it.

Further, at one end of the end portion of the plate-shaped portion 492 in the lateral direction, a curved portion 4921 bent toward the lower surface side in a substantially arc shape is provided. With such a configuration, it is possible to prevent the user of the refrigerator 30 and the fingers of the operator when transporting the refrigerator 30 from touching the end portion of the plate-shaped portion 492 and being injured.

A first gap C1 is provided between the first plate 48 and the second plate 49. With such a configuration, even if the vibration of the compressor 39 is transmitted to the machine room cover 42, it is possible to prevent the first plate 48 and the second plate 49 from coming into contact with each other to generate an abnormal noise.

Further, a predetermined gap is provided between the cover member 47 and the first plate 48 and the second plate 49. With such a configuration, even if the vibration of the compressor 39 is transmitted to the machine room cover 42, the cover member 47 and the first plate 48 or the second plate 49 come into contact with each other to generate an abnormal noise. Can be suppressed.

That is, the cover member 47, the first plate 48, and the second plate 49 are configured so as not to come into contact with each other except for the portion fixed by the screw 50. With such a configuration, even if the vibration of the compressor 39 is transmitted to the machine room cover 42, it is possible to suppress the generation of abnormal noise.

As described above, the present disclosure provides a machine room cover capable of suppressing the ingress of dust and the like from a vent and a refrigerator using the same. Therefore, it can be applied to industrial equipment for cooling a heating element, as well as a refrigerator for home or business use.

30 Refrigerator 31 Insulation box 32 Outer box 33 Inner box 34 Foam heat insulating material 35 Vacuum heat insulating material 36 Upper machine room 37 Air-cooled condenser 38 Blower 39 Compressor 40 Blower fixing member 41 Bypass air passage 42 Machine room cover 43 Central cover 44 Wind Top cover 45 Downwind cover 46 Base member 461 Top surface part 461a Top surface ventilation hole 462 Back side ventilation hole 463 Carrying grip part 47 Cover member 471 Frame part 472 Ventilation opening 473 Outer rib part 474 Inner rib part 48 First plate 481 1st opening 482,482X, 482Y Guide part 482a Flat part 482b Inclined part 482b1 Bending part 483 1st hole 49 2nd plate 491 2nd opening 492, 492X, 492Y Plate-shaped part 4921 Curved part 493 Step part 493a 1 Extension part 493b 2nd extension part 494 2nd hole 50 screw C1 1st gap (2nd predetermined interval)
C2 Second gap (first predetermined interval)

Claims (7)

A plurality of guide portions, and a first plate having a plurality of first openings provided between the plurality of guide portions and adjacent guide portions among the plurality of guide portions.
A plurality of plate-shaped portions and a second plate having a plurality of second openings provided between adjacent plate-shaped portions among the plurality of plate-shaped portions are provided.
One end of each of the plurality of guide portions is arranged so as to be close to one end of each of the plurality of plate-shaped portions.
Each of the plurality of guide portions is arranged so as to have a first predetermined distance between the other end and the other end of each of the plurality of plate-shaped portions.
The upper part of each of the plurality of first openings is covered with at least one of the plurality of plate-shaped portions and at least one of the plurality of guide portions.
The lower part of each of the plurality of second openings is covered with at least one of the plurality of guide portions.
Machine room cover. One end of each of the plurality of guide portions is a front end located on the front side of the first plate.
The other end of each of the plurality of guide portions is a rear end located on the rear side of the first plate.
One end of each of the plurality of plate-shaped portions is a rear end located on the rear side of the second plate.
The other end of each of the plurality of plate-shaped portions is a front end located on the front side of the second plate.
The front end of the guide portion located on the front side of the first plate among the adjacent guide portions in the plurality of guide portions is the first of the adjacent plate-shaped portions in the plurality of plate-shaped portions. 2 The plate-shaped portion located on the front side of the plate is located closer to the rear end of the plate-shaped portion located on the front side of the second plate among the adjacent plate-shaped portions than the front end.
The rear end of the guide portion located on the front side of the first plate among the adjacent guide portions in the plurality of guide portions is the second plate of the adjacent plate-shaped portions of the plurality of plate-shaped portions. It is located closer to the rear end of the plate-shaped portion located on the rear side of the second plate than the front end of the plate-shaped portion located on the rear side of the second plate.
The machine room cover according to claim 1. A second predetermined distance is formed between the one end of each of the plurality of guide portions and the one end of each of the plurality of plate-shaped portions.
The first predetermined interval is larger than the second predetermined interval.
The machine room cover according to any one of claims 1 or 2. The other end of each of the plurality of plate-shaped portions has a curved portion formed by folding a part of the other end toward the one end side of each of the plurality of plate-shaped portions.
The machine room cover according to any one of claims 1 to 3. Further provided with a cover member having a ventilation opening,
The first plate is held by the cover member via the second plate.
The first plate and the peripheral portion of the second plate are covered with the cover member.
The machine room cover according to any one of claims 1 to 4. The first plate and the second plate were made of metal.
The machine room cover according to any one of claims 1 to 5. Insulated box and
A machine room arranged on a step provided in the upper part of the back surface of the heat insulating box, and
A compressor and a blower arranged in the machine chamber,
A machine room cover that covers at least a part of the machine room is provided.
The machine room cover is a refrigerator which is the machine room cover according to any one of claims 1 to 6.