JP2017133800A - refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a refrigerator which sufficiently cools a substrate for a display device and secures a sufficient installation space of the substrate for the display device.SOLUTION: A refrigerator 2 includes: a housing 4; at least one door 8a, 8b which is attached to the housing 4 so as to open or close; and at least one display device 8a, 8b which is attached to the housing 4 or a door 6a, 6b. At least parts 40, 50 of the substrate for the display device 8a, 8b are disposed on an upper surface 4a of the housing 4.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a refrigerator provided with a substrate cooling mechanism.

  In order to efficiently cool the control board and power supply board of the refrigerator, a refrigerator in which the board is disposed in a wide space at the lower back of the refrigerator has been proposed (for example, see Patent Document 1).

JP 2005-98559 A

  In the refrigerator described in Patent Document 1, since the substrate is disposed on the back side of the refrigerator, when the refrigerator is actually installed, the substrate is arranged close to the wall of the room. Therefore, cooling due to the flow of wind cannot be expected, and the substrate may not be sufficiently cooled.

  For example, when a refrigerator includes a display device, it is necessary to further include a substrate for the display device in addition to the substrate of the refrigerator. In particular, when a large display device is provided, since the substrate for the display device becomes quite large, it is difficult to secure an installation space at the lower back of the refrigerator. Further, since the amount of heat generated from the substrate for the display device, particularly the power supply substrate, increases, it is difficult to cool at a position close to the wall of the room.

  Accordingly, an object of the present invention is to solve the above problems, and to provide a refrigerator capable of securing a sufficient installation space for a substrate for a display device and sufficiently cooling the substrate for a display device. It is to provide.

The present invention
A housing,
At least one door attached to the housing in an openable and closable manner;
At least one display device attached to the housing or the door;
With
At least a part of the substrate for the display device is disposed on an upper surface of the housing.

  According to the present invention, since at least a part of the substrate for the display device is disposed on the upper surface of the refrigerator casing, a sufficient space for installing the substrate can be secured. Further, since a sufficient space can be secured on the upper side, the substrate disposed on the upper surface of the housing can be sufficiently cooled by the air flow.

The present invention also provides
The substrate disposed on the upper surface of the housing is covered with a metal cover member;
A fan for circulating the air inside the cover member is provided.

  According to the present invention, since the substrate disposed on the upper surface of the housing is covered with the cover member, dust or the like can be prevented from adhering to the substrate. Furthermore, since the air inside the cover member is circulated by the fan, the air flow from the fan takes heat from each electrical device on the board and transmits it to the metal cover member having a high thermal conductivity on the outside. Heat can be radiated from the outside to the outside. Thus, the substrate disposed on the upper surface of the housing can be sufficiently cooled.

The present invention also provides
The cover member is composed of an upper surface portion and a side surface portion extending around the entire circumference connected to the upper surface portion,
The cover member covers the entire upper surface of the casing, and the entire upper surface portion and side surface portion of the cover member function as a cooling surface.

  In the present invention, heat generated from the substrate disposed on the upper surface of the housing is radiated to the outside using the entire upper surface and side surfaces of the metal cover member having high thermal conductivity that covers the entire upper surface of the housing. Since it can do, the board | substrate arrange | positioned at the upper surface of a housing | casing can be cooled efficiently.

The present invention also provides
The substrate disposed on the upper surface of the housing has a first substrate and a second substrate;
A frame having an outer frame surrounding the first substrate and the second substrate, and a partition plate disposed between the first substrate and the second substrate and connected to the outer frame is provided. ,
The partition plate is provided with a first opening in which the fan is disposed and a second opening serving as an air flow path,
The air discharged from the fan to the first substrate side strikes the outer frame or the inner wall of the cover member and flows in the opposite direction, and flows into the second substrate side from the second opening,
The air flowing into the second substrate side hits the outer frame or the inner wall of the cover member and flows again in the opposite direction, and flows into the suction port of the fan, whereby the air circulates inside the cover member. It is characterized by that.

  In the present invention, since the flow in the cover member is defined by the positions of the first and second openings, the first and second openings are appropriately arranged according to the arrangement of the first and second substrates. Thereby, the board | substrate arrange | positioned at the upper surface of a housing | casing can be cooled efficiently.

The present invention also provides
An electrical device having a large calorific value is disposed on the discharge side of the fan.

  In the present invention, since the electric device having a large calorific value is arranged on the discharge side of the fan where the highest cooling effect can be expected, the substrate arranged on the upper surface of the housing can be cooled more efficiently.

  As described above, the present invention can provide a refrigerator that can secure a sufficient installation space for a substrate for a display device and can sufficiently cool the substrate for the display device.

It is a perspective view which shows the external shape of the refrigerator which concerns on one embodiment of this invention. It is side surface sectional drawing of the refrigerator which showed the basic composition of the display apparatus of this invention typically. In the refrigerator shown in FIG. 1, it is a perspective view which shows the state which took the cover member which covers the upper surface of the housing | casing of a refrigerator. It is a perspective view which expands and shows the area | region of the board | substrate arrange | positioned at the upper surface of the housing | casing in FIG. It is the top view which shows the detail of the area | region of the board | substrate arrange | positioned on the upper surface of the housing | casing of the state of the state which removed the cover member, and the perspective view which shows the detail of the attachment part of a fan. It is side surface sectional drawing which showed typically the flow of the air in the cover member which concerns on this invention, and the flow of heat.

Next, specific embodiments of the present invention will be described in detail with reference to the drawings.
(Description of refrigerator according to one embodiment of the present invention)
FIG. 1 is a perspective view showing an outer shape of a refrigerator according to one embodiment of the present invention. First, the outline | summary of the refrigerator 2 which concerns on one embodiment of this invention is demonstrated, referring FIG.

  The refrigerator 2 according to the present embodiment includes a housing 4 and an upper door 6a and a lower door 6b that are attached to the housing 4 so as to be freely opened and closed. An upper display device 8a is attached to the front surface of the upper door 6a, and a lower display device 8b is attached to the front surface of the lower door 6b. The upper surface of the housing 4 is covered with a cover member 10.

FIG. 2 is a side cross-sectional view of the refrigerator 2 schematically showing the basic configuration of the display devices 8a and 8b according to the present invention. FIG. 3 is a perspective view showing a state where the cover member 10 covering the upper surface 4a of the housing 4 of the refrigerator 2 is removed in the refrigerator 2 shown in FIG. 4 is an enlarged perspective view showing regions of the power supply boards 40 and 50 arranged on the upper surface 4a of the housing 4 in FIG.
Next, the structure of the region of the upper surface 4a of the housing 4 that is usually covered with the cover member 10 will be described with reference to FIGS.

As shown in FIG. 2, a control board 60 for the two display devices 8a and 8b is provided on the back side of the display device 8a of the upper door 6a. A power supply board 40 for the control board 60 is provided on the upper surface 4 a of the housing 4, and power is supplied from the power supply board 40 to the control board 60 through the connection 70. The power supply board 40 for the control board 60 can also be referred to as a “first board”.
The two display devices 8a and 8b are provided with backlights 80a and 80b, respectively. A power supply board 50 for the backlights 80a and 80b is provided on the upper surface 4a of the casing 4, and power is supplied from the power supply board 50 to the backlights 80a and 80b through the connection lines 72a and 72b, respectively. The power supply substrate 50 for the backlights 80a and 80b can also be referred to as a “second substrate”.

The connection 70 enters the inside of the upper door 6a from the hinge region of the upper door 6a through the inside of the outer casing of the casing 4 from the power supply board 40 arranged on the upper surface 4a of the casing 4, and enters the inside of the upper door 6a. It is connected to the arranged control board 60.
The connection line 72a enters the inside of the upper door 6a from the hinge region of the upper door 6a through the inside of the outer casing of the casing 4 from the power supply board 50 arranged on the upper surface 4a of the casing 4, and enters the inside of the upper door 6a. It is connected to the arranged backlight 80a. Similarly, the connection line 72b enters the inside of the lower door 6b from the hinge region of the lower door 6b from the power supply board 50 disposed on the upper surface 4a of the casing 4 through the inside of the outer casing of the casing 4, and enters the lower door 6b. Is connected to a backlight 80b disposed inside the.

  In FIG. 2, one control board 60 is provided for the two display devices 8a and 8b. However, the present invention is not limited to this, and a control board may be provided for each of the display devices 8a and 8b. obtain. Also in this case, power is supplied from the power supply board 40 disposed on the upper surface 4a of the housing 4 to each control device.

  As shown in FIGS. 3 and 4 with the cover member 10 removed, a frame 20 including an outer frame 20a and a partition plate 20b connected to the outer frame 20a is installed on the upper surface 4a of the housing 4. The power supply board 40 for the control board 60 and the power supply board 50 for the backlights 80a and 80b are surrounded by an outer frame 20a arranged in a substantially rectangular shape.

The partition plate 20 b is disposed between the power supply board 40 and the power supply board 50. A fan (not shown) is disposed in the fan opening 22 provided in the partition plate 20b. The partition plate 20b is further provided with an opening 24 for blowing air. The fan opening 22 can be referred to as a “first opening”, and the blower opening 24 can be referred to as a “second opening”.
A resin material can be exemplified as a material of the frame 20 configured by the outer frame 20a and the partition plate 20b. However, the present invention is not limited to this, and any other material including a metal material can be adopted as the material of the frame 20.

The cover member 10 is attached to the upper surface 4 a of the housing 4 so as to cover the frame 20 and the power supply substrate 40 and the power supply substrate 50 arranged in the frame 20.
The cover member 10 includes an upper surface portion 10a made of a metal thin plate and four side surface portions 10b, and the lower surface is open. For example, the upper surface portion 10a and the side surface portions 10b are bent, and the side surface portions 10b are joined to each other with a fastening member such as welding, a screw, or a bolt to form a rectangular parallelepiped shape with one surface opened. it can. However, the present invention is not limited to this, and any other structure including integral molding by casting can be adopted. The shape of the cover member 10 is not limited to the shape of a rectangular parallelepiped, and can have an arbitrary shape depending on the shape of the casing 4 of the refrigerator 2, the arrangement of the power supply board, and the like.

  Examples of the metal material used for the cover member 10 include carbon steel, stainless steel, aluminum, and copper, but are not limited thereto, and any other metal material can be adopted. Furthermore, the surface of the metal material can be coated. As a thickness dimension of a metal material, 0.3-1 mm can be illustrated.

  FIG. 5 is a plan view showing details of the regions of the boards 40 and 50 arranged on the upper surface 4a of the housing 4 with the cover member 10 removed, and a perspective view showing details of a mounting portion of the fan 30. FIG. Next, a more detailed structure of the region of the upper surface 4a of the housing 4 and the flow of cooling air in this region will be described with reference to FIG.

  As shown in the left perspective view of FIG. 5, the fan 30 is inserted into the fan opening 22 from above and fixed. On the other hand, no member is inserted into the ventilation opening 24 and forms an air flow path. The arrows in FIG. 5 indicate the flow of air circulating inside the outer frame 20a of the frame 20 by the fan 30. In the present embodiment, the fan 30 is a propeller fan driven by an electric motor. However, the fan is not limited to this, and any fan including a sirocco fan, a mixed flow fan, and a turbo fan can be used.

As indicated by the arrows in FIG. 5, air is discharged from the fan 30 to the power supply board 40 side for the control board 60. Thereby, air flows between each electric equipment 40a of power supply board 40, and each electric equipment 40a can be cooled. In particular, since the transformer 40a1 having the largest heat generation amount among the electric devices 40a is arranged in the axial direction on the discharge side of the fan 30 where the greatest cooling effect can be expected, efficient cooling can be realized.
Thereafter, the air discharged from the fan 30 strikes the outer frame 20a on the right side of the frame 20 or a member disposed on the outer frame 20a and flows in the opposite direction, that is, on the left side of the drawing. The electric devices 40a of the power supply board 40 can be cooled by the air flow to the left side of the drawing.

The air flowing on the left side of the drawing flows into the power supply board 50 side for the backlights 80a and 80b from the ventilation opening 24. Each electric device 50a of the power supply board 50 can be cooled by the flow of air flowing into the power supply board 50 side.
Then, the air flowing into the power supply substrate 50 strikes the outer frame 20a or a member disposed on the outer frame 20a and again flows in the reverse direction, that is, on the right side of the drawing. With the flow on the right side of the drawing, each electric device 50a of the power supply board 50 can be cooled. Then, the air flows into the suction port of the fan 30 so that the air circulates inside the outer frame 20a.

In some cases, there is a possibility that the air flowing by the fan 30 does not flow in the reverse direction in the outer frame 20a but flows to the upper side of the outer frame 20a. Even in that case, since the traveling direction is reversed by hitting the inner wall of the cover member 10, the flow direction is reversed in any case.
In FIG. 5 (similarly in FIG. 6), reference numerals 40a and 50a are given to only one electric device as a representative of all the electric devices 40a and 50a. It corresponds to the electric equipment of 40a or 50a.

  The air discharged from the fan 30 has the highest temperature when passing through the transformer 40a1 of the power supply board 40 that generates the largest amount of heat, and between the other electric devices 40a of the power supply board 40 and each electric power of the power supply board 50. When passing between the devices 50a, the temperature gradually decreases. That is, the amount of heat released from the outer surface of the cover member 10 is greater than the amount of heat generated from the electrical devices 40a and 50a. And when it flows in into the suction inlet of the fan 30, it has returned to the original temperature when it was discharged from the fan 30 in general. This establishes a steady state cooling cycle.

  As described above, since the flow in the cover member 10 is defined by the positions of the fan opening 22 and the blower opening 24, the fan opening 22 and the blower opening 24 are connected to the electric devices 40 a of the power supply boards 40 and 50. , 50a, the power supply boards 40, 50 arranged on the upper surface 4a of the housing 4 can be efficiently cooled. That is, by appropriately determining the positions of the fan opening 22 and the blower opening 24, the flowing air can be applied to the electric devices 40a and 50a of the power supply boards 40 and 50 to be cooled. Thereby, a special member such as a guide for providing a flow path is not required, and a cooling mechanism capable of efficiently cooling at low cost can be realized. Moreover, it can respond flexibly to the arrangement patterns of various electric devices 40a and 50a.

  FIG. 6 is a side cross-sectional view schematically showing the air flow and heat flow in the cover member according to the present invention. Next, an air flow and a heat flow in the cover member 10 are schematically shown with reference to FIG. The solid arrows in FIG. 6 schematically show the flow of air circulating in the horizontal direction as shown in FIG. The dotted arrows in FIG. 6 schematically show the flow of heat dissipation.

  As shown in FIG. 6, since at least a part of the substrates for the display devices 8a and 8b, specifically, the power supply substrates 40 and 50 are arranged on the upper surface 4a of the casing 4 of the refrigerator 2, sufficient Space for installing the board can be secured. Furthermore, since a sufficient space can be secured on the upper side, the power supply boards 40 and 50 arranged on the upper surface 4a of the housing 4 can be sufficiently cooled by the air flow.

According to the present embodiment, since the power supply boards 40 and 50 arranged on the upper surface 4a of the housing 4 are covered with the cover member 10, dust and the like can be prevented from adhering to the power supply boards 40 and 50. .
Further, since the air inside the cover member 10 is circulated by the fan 30, heat is taken away from the electric devices 40 a and 50 a of the power supply boards 40 and 50 by the air flow by the fan 30, and the outside heat conductivity is high. It can transmit to the metal cover member 10 and can radiate heat from the cover member 10 to the outside. Therefore, the power supply boards 40 and 50 disposed on the upper surface 4a of the housing 4 can be sufficiently cooled.

  In the present embodiment, the heat generated from the power supply boards 40 and 50 arranged on the upper surface 4a of the housing 4 covers the entire upper surface 4a of the housing 4 and the upper surface portion of the metal cover member 10 having high thermal conductivity and Since heat can be radiated to the outside using the entire side portion, the power supply boards 40 and 50 arranged on the upper surface 4a of the housing 4 can be efficiently cooled.

  In principle, the cover member 10 is not provided with an opening, and the air flow inside the cover member 10 removes heat from each of the electric devices 40a and 50a, and the heat is further removed from the inner surface of the metallic cover member 10. The heat that reaches the outer surface of the cover member 10 due to heat conduction is released to the outside. Thereby, cooling of each electric equipment 40a and 50a can fully be performed. Since there is no opening, it is possible to effectively prevent dust and the like from adhering to the power supply boards 40 and 50.

  However. However, the present invention is not limited to this, and an opening for sucking outside air into the cover member 10 and an opening for discharging the internal air to the outside can also be provided. For example, an opening for sucking outside air is provided at a position on the extension line of the suction opening of the fan 30 of the cover member 10, and an opening for discharging the internal air to the outside at a position on the extension line in the flow direction of the blowing opening 24 of the cover member 10. It is conceivable to provide Thereby, a cooling effect can be heightened more. In this case, it is preferable to employ a structure in which dust or the like hardly enters the cover member 10 with the opening facing downward.

The flow rate of the cooling air for cooling the electric devices 40a and 50a on the power supply boards 40 and 50 preferably has the highest flow rate when it hits the transformer 40a1 of the power supply board 40 that generates the largest amount of heat. The temperature of the cooling air also preferably has the lowest temperature when it hits the transformer 40a1 of the power supply board 40 with the largest amount of heat generation.
Therefore, it is preferable that the transformer 40a1, which is an electrical device having a large calorific value, be disposed on the discharge side of the fan 30. In this case, since the electric device 40a having a large heat generation amount is disposed on the discharge side of the fan 30 where the highest cooling effect can be expected, the power supply substrate 40 disposed on the upper surface 4a of the housing 4 is cooled more efficiently. be able to. As described above, it is more preferable that the transformer 40a1 is arranged in the axial direction on the discharge side of the fan 30.

  Although the embodiments and embodiments of the present invention have been described, the disclosed contents may vary in the details of the configuration, and combinations of elements and changes in the order of the embodiments, embodiments, etc. are claimed in the present invention. It can be realized without departing from the scope and spirit of the present invention.

2 Refrigerator 4 Housing 4a Upper surface 6a Upper door 6b Lower door 8a, 8b Display device 10 Cover member 10a Upper surface portion 10b Side surface portion 20 Frame 20a Outer frame 20b Partition plate 22 Fan opening 24 Blower opening 30 Fan 40 Control board power supply Substrate 40a Electrical device 40a1 Transformer 50 Backlight power supply substrate 50a Electrical device 60 Control board 70 Connection 72 Connection 80a, 80b Backlight

Claims (5)

A housing,
At least one door attached to the housing in an openable and closable manner;
At least one display device attached to the housing or the door;
With
A refrigerator, wherein at least a part of a substrate for the display device is disposed on an upper surface of the casing. The substrate disposed on the upper surface of the housing is covered with a metal cover member;
The refrigerator according to claim 1, further comprising a fan for circulating air inside the cover member. The cover member is composed of an upper surface portion and a side surface portion extending around the entire circumference connected to the upper surface portion,
The refrigerator according to claim 2, wherein the cover member covers the entire upper surface of the casing, and the upper surface portion and the entire side surface portion of the cover member function as a cooling surface. The substrate disposed on the upper surface of the housing has a first substrate and a second substrate;
A frame having an outer frame surrounding the first substrate and the second substrate, and a partition plate disposed between the first substrate and the second substrate and connected to the outer frame is provided. ,
The partition plate is provided with a first opening in which the fan is disposed and a second opening serving as an air flow path,
The air discharged from the fan to the first substrate side strikes the outer frame or the inner wall of the cover member and flows in the opposite direction, and flows into the second substrate side from the second opening,
The air flowing into the second substrate side hits the outer frame or the inner wall of the cover member and flows again in the opposite direction, and flows into the suction port of the fan, whereby the air circulates inside the cover member. The refrigerator according to claim 3.   The refrigerator according to claim 4, wherein an electric device having a large calorific value is disposed on the discharge side of the fan.