CN113056130A

CN113056130A - Air conditioner and electric cabinet thereof

Info

Publication number: CN113056130A
Application number: CN202110157261.4A
Authority: CN
Inventors: 延廷琪; 吕福俊; 陈朋; 张岐军; 王秀霞
Original assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Current assignee: Qingdao Haier Air Conditioner Gen Corp Ltd; Qingdao Haier Air Conditioning Electric Co Ltd; Haier Smart Home Co Ltd
Priority date: 2021-02-04
Filing date: 2021-02-04
Publication date: 2021-06-29
Anticipated expiration: 2041-02-04
Also published as: WO2022166172A1; CN113056130B

Abstract

The invention belongs to the technical field of air conditioners, and particularly provides an air conditioner and an electric cabinet thereof. The invention aims to solve the problem that the normal work of an electric control module is influenced because the internal temperature of the existing electric control box is easily overhigh due to poor structural design. Therefore, the electric cabinet comprises an outer box body and an inner box body arranged in the outer box body, the inner box body and the outer box body are connected through a connecting component, a heat conducting cavity is formed between the inner box body and the outer box body, a computer board is arranged in the inner box body, so that the temperature influence of heat generated by a heat exchanger on the computer board can be effectively reduced, at least one pin is arranged on the computer board, the pin penetrates through the connecting component and extends to the outside of the outer box body, a semiconductor refrigerating sheet is arranged on the outer box body, the cold surface of the semiconductor refrigerating sheet is located on one side close to the inner box body, at least one through hole is further formed in the outer box body, and the heat conducting cavity is communicated with the outside through the through hole, so that the temperature in the heat conducting cavity can be effectively reduced, and.

Description

Air conditioner and electric cabinet thereof

Technical Field

The invention belongs to the technical field of air conditioners, and particularly provides an air conditioner and an electric cabinet thereof.

Background

Most of the existing air conditioners are provided with electric cabinets for installing and protecting various electric control modules, and the electric cabinets of the existing air conditioners are usually arranged near a heat exchanger due to the limitation of the internal structure and the space of an indoor unit, so that the electric cabinets can be continuously contacted with air after heat exchange. Meanwhile, each electric control module in the electric control box can continuously generate heat in the working process, so that the conventional electric control box is generally provided with a heat dissipation component to better conduct the heat in the box body to the outside of the box body; however, these heat dissipating members not only conduct heat from the inside of the case, but also conduct heat from the outside of the case. Especially, when the air conditioner operates in a heating mode, hot air generated by the indoor unit continuously blows through the heat dissipation component, so that the temperature of the heat dissipation component is easily overhigh, and even the heat can be directly conducted into the box body, so that various electric control modules in the box body can only operate in a high-temperature environment; therefore, the problem that the electric control module arranged in the box body cannot normally work due to overhigh temperature is easily caused, the whole air conditioner has to be stopped for finishing, and even the electric control module is damaged.

Accordingly, there is a need in the art for a new air conditioner and an electric cabinet thereof to solve the above problems.

Disclosure of Invention

In order to solve the above problems in the prior art, that is, to solve the problem that the electric cabinet of the existing air conditioner has a poor structural design and is easy to cause an excessively high internal temperature, thereby affecting the normal operation of an electric control module, the invention provides an electric cabinet for an air conditioner, which comprises an outer box body and an inner box body arranged in the outer box body, wherein the inner box body and the outer box body are connected with each other through at least one connecting member, so that a heat conducting cavity is formed between the inner box body and the outer box body, a computer board is arranged in the inner box body, at least one pin is arranged on the computer board, the pin penetrates through the connecting member and extends to the outside of the outer box body, a semiconductor refrigerating sheet is arranged on the outer box body, the cold surface of the semiconductor refrigerating sheet is positioned at one side close to the inner box body, and at least one through hole is also arranged on the outer box body, the heat conduction cavity is communicated with the outside through the through hole.

In the preferred technical scheme of the electric cabinet, an opening structure is arranged at the top of the outer box body, and the semiconductor refrigeration piece is arranged at the opening and shields the opening.

In the preferred technical scheme of the electric cabinet, the computer board is arranged close to the first side, and the top plate of the inner box body is arranged in a manner of inclining downwards from the first side to the second side; wherein the first side and the second side are opposite.

In the preferred technical scheme of the electric cabinet, an annular water accumulation table is arranged on the outer top surface of the inner box body so as to accumulate condensed water for cooling.

In a preferred embodiment of the electric cabinet, the connecting member includes a first heat dissipating part and a second heat dissipating part connected to each other, the first heat dissipating part is disposed between the inner box and the outer box, and the second heat dissipating part is disposed outside the outer box.

In a preferred technical solution of the above electric cabinet, a heat dissipation cavity is formed in the first heat dissipation portion, and the pins penetrate through the first heat dissipation portion through the heat dissipation cavity.

In the preferred technical scheme of the electric cabinet, the computer board is arranged close to the bottom of the inner box body.

In the preferred technical scheme of the electric cabinet, the through hole is a drain hole, and the vertical height of the drain hole is between the vertical height of the computer board and the vertical height of the bottom plate of the inner box body.

In the preferred technical scheme of the electric cabinet, the inner box body is cuboid; and/or the outer case has a rectangular parallelepiped shape.

The invention also provides an air conditioner which comprises the electric cabinet in any one of the preferable technical scheme.

As can be understood by those skilled in the art, in the technical solution of the present invention, the electric cabinet of the present invention includes an outer box and an inner box disposed in the outer box, the inner box and the outer box are connected by at least one connecting member and thus a heat conducting cavity is formed between the inner box and the outer box, a computer board is disposed in the inner box, at least one pin is disposed on the computer board, the pin penetrates through the connecting member and extends to the outside of the outer box, a semiconductor chilling plate is disposed on the outer box, a cold surface of the semiconductor chilling plate is located at a side close to the inner box, at least one through hole is further disposed on the outer box, and the heat conducting cavity is communicated with the outside through the through hole. The invention effectively reduces the temperature influence of heat generated by the heat exchanger on the computer board by arranging the double-layer box body structure and arranging the computer board in the inner box body, improves the self heat dissipation capability by arranging the pins on the computer board, and is more convenient for technicians to carry out various wiring operations.

Drawings

FIG. 1 is a general schematic view of an electrical cabinet (without a front panel) of the present invention;

FIG. 2 is a front view of the electrical cabinet of the present invention (without the front panel);

FIG. 3 is a cross-sectional view taken along the plane A-A in FIG. 2;

FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2;

FIG. 5 is a cross-sectional view taken along plane C-C of FIG. 2;

reference numerals: 11. an outer case; 12. an inner box body; 121. a top plate; 13. connecting columns; 131. a first heat sink portion; 1311. a heat dissipation cavity; 132. a second heat sink member; 14. a computer board; 141. a stitch; 15. a semiconductor refrigeration sheet; 16. a through hole; 101. a heat conducting cavity.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention. And can be adjusted as needed by those skilled in the art to suit particular applications. For example, the electric cabinet described in the preferred embodiment may be used in an outdoor unit, and may also be used in an indoor unit; for another example, the indoor unit may be a wall-mounted indoor unit or a cabinet-type indoor unit. Changes in these specific application objects do not depart from the basic principle of the invention, and the invention is protected.

It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring first to fig. 1 and 2, wherein fig. 1 is an overall schematic view of an electric cabinet (without a front panel) of the present invention; fig. 2 is a front view of the electrical cabinet of the present invention (without the front panel). Firstly, it should be noted that the invention does not impose any limitation on the specific application object of the electric cabinet, that is, technicians can use the electric cabinet of the invention in various air conditioners according to the actual use requirements; such changes in the specific application without departing from the basic principle of the invention shall fall within the protection scope of the invention. In addition, for convenience of illustrating the internal structure of the electric cabinet, a front panel part of the electric cabinet is not shown in the figures, and the front panel can close the front end opening of the electric cabinet. As shown in fig. 1 and 2, the electric cabinet of the present invention includes an outer box 11 and an inner box 12 disposed in the outer box 11, in the preferred embodiment, the inner box 12 and the outer box 11 are connected by two connecting columns 13, such that a heat conducting cavity 101 is formed between the inner box 12 and the outer box 11, a computer board 14 of the air conditioner is disposed in the inner box 12, a plurality of pins 141 are disposed on the computer board 14, and the pins 141 penetrate the connecting columns 13 and extend to the outside of the outer box 11.

It should be noted that, the invention does not limit the specific shape and size of the outer box 11 and the inner box 12, as long as the computer board 14 can be accommodated in the inner box 12, and the heat conducting cavity 101 is formed between the inner box 12 and the outer box 11, and the technical staff can set the shape and size according to the actual use requirement; preferably, the outer case 11 and the inner case 12 are each rectangular parallelepiped to better plan the inner structural arrangement thereof. In addition, although the connection member in the preferred embodiment is a connection column structure, this is not restrictive, and the technician may set the specific structure of the connection member according to the actual use requirement, as long as the connection member can connect the outer box 11 and the inner box 12 and allow the pins 141 to pass through. In addition, the invention does not limit the specific type of the computer board 14 and the specific number of the pins 141, so that a technician can set the type and the number according to the actual use requirement of the air conditioner and correspondingly adjust the size of the whole electric cabinet according to the specific structure and the size of the computer board 14. The specific structural changes do not depart from the basic principle of the invention and belong to the protection scope of the invention.

Specifically, in the preferred embodiment, the outer box 11 is a rectangular box-shaped structure with an open top, a semiconductor cooling plate 15 is disposed at the open top, and the semiconductor cooling plate 15 is used as a top plate of the outer box 11 to shield the open top, so that the semiconductor cooling plate 15 and the outer box 11 together form a complete closed box structure. The bottom surface of the semiconductor refrigeration sheet 15 is directly contacted with the heat conduction cavity 101 as the inner top surface of the outer box body 11, the power is preferably supplied through the computer board 14, and other external power supplies can be adopted, and the arrangement direction of the semiconductor refrigeration sheet is that the cold surface faces downwards and the hot surface faces upwards, so that the cold surface can be positioned in the heat conduction cavity 101, and the temperature in the heat conduction cavity 101 can be reduced better. It can be understood by those skilled in the art that the specific type of the semiconductor cooling plate 15 can be set by those skilled in the art according to the actual use requirement, as long as it has a cold side and a hot side and the cold side is disposed in the heat conducting cavity 101.

It should be noted that, the specific arrangement mode and arrangement position of the semiconductor chilling plate 15 are not limited in the present invention, and a technician may set the semiconductor chilling plate 15 according to the actual use requirement as long as the semiconductor chilling plate 15 can cool the heat conducting cavity 101. For example, the semiconductor chilling plates 15 may also be disposed at the side or bottom of the outer case 11; for another example, the cold surface of the semiconductor cooling sheet 15 may be directly located in the heat conduction chamber 101, or the heat conduction chamber 101 may be cooled through a panel of the outer case 11. Of course, it is preferable that the semiconductor cooling fins 15 are disposed on the top of the outer case 11 and the cold side thereof directly contacts with the air in the heat conducting chamber 101, so as to maximally secure the cooling effect.

With reference to fig. 2, as shown in fig. 2, the outer box 11 is further provided with a through hole 16, and the through hole 16 is located at the bottom of the right side of the back plate of the outer box 11. In the preferred embodiment, the through hole 16 is used as a drainage hole, when the humidity of the air is high, the air is cooled on the cold surface of the semiconductor cooling plate 15 to generate condensed water, the condensed water is continuously accumulated and dripped to the bottom of the outer box 11, the accumulated water can further cool the air in the heat conduction cavity 101, and when the height of the accumulated water exceeds the set height of the through hole 16, the excess water can be discharged through the through hole 16, so that the problem of over-high humidity is effectively avoided, and the safe use of the computer board 14 is effectively ensured. As a preferred arrangement, the height of the through hole 16 in the vertical direction is between the vertical height of the computer board 14 and the vertical height of the bottom plate of the inner casing 12, so that the water accumulated in the outer casing 11 can be higher than the bottom plate of the inner casing 12, so as to better cool the inner casing 12 without exceeding the computer board 14, thereby preventing the accumulated water from causing irreversible damage to the computer board 14 to the maximum extent.

It should be noted that the present invention does not limit the specific shape, the specific number and the specific location of the through holes 16, and the technician can set the shape and the location according to the actual use requirement. For example, although the through hole 16 is a drain hole disposed at the bottom of the outer case 11 in the preferred embodiment, the through hole 16 may be a vent hole disposed at the top of the outer case 11, which is obviously not restrictive, but it is a preferred way to further reduce the temperature by the condensed water, which is more advantageous for reducing the internal temperature. For another example, the through hole 16 may be circular, square, or elongated; this is not restrictive and the technician can set it according to the actual use requirements.

Referring next to fig. 3 and 4, wherein fig. 3 is a sectional view taken along the plane a-a of fig. 2, and fig. 4 is a sectional view taken along the plane B-B of fig. 2. As shown in FIGS. 3 and 4, in the preferred embodiment, the length of the inner case 12 is set equal to the length of the computer board 14, and the width thereof is set larger than the width of the computer board 14; based on this, both sides of the computer board 14 abut against the left and right side walls of the inner case 12 for better heat conduction, so that the temperature of the computer board 14 can be quickly adjusted. Preferably, at least one strip-shaped protruding structure is respectively arranged on the left side wall and the right side wall of the inner box 12, and the computer board 14 is abutted and fixed through the two protruding structures, so as to improve the heat conduction efficiency to the maximum extent; of course, this is not restrictive, and the technician may set the fixing manner by himself or herself according to the actual use requirement as long as the abutment can be achieved. Further, the computer board 14 is disposed at the front side in the inner case 12 to make a rear space vacant, thereby better securing a heat dissipation effect thereof. It should be noted that the above-mentioned arrangement is a preferable arrangement, and a technician may set the specific fixing manner and fixing position of the computer board 14 according to the actual use requirement, as long as the computer board 14 is arranged in the inner box 12. Changes in this particular arrangement do not depart from the basic principles of the invention and are intended to be within the scope of the invention.

Further, with reference to fig. 3, according to the orientation shown in fig. 3, the computer board 14 is disposed on the left side of the inner casing 12, and the top plate 121 of the inner casing 12 is inclined downward from left to right, so as to guide the water to the side away from the computer board 14 more quickly, thereby protecting the computer board 14 to the maximum extent. Of course, the specific orientation is not limited, and the technician can set the orientation according to the actual requirement, as long as the top board 121 of the inner box 12 is inclined downward from the first side to the second side when the computer board 14 is disposed near the first side, wherein the first side is opposite to the second side; for example, when the computer board 14 is disposed on the right side of the inner box 12, the top board 121 of the inner box 12 may be disposed to be inclined downward from right to left, and the technician may adjust the computer board according to the actual use requirement.

Further preferably, an annular water accumulation table (not shown in the figure) is further disposed on the outer side surface of the top plate 121 of the inner box 12, that is, the outer top surface of the inner box 12, and the annular water accumulation table is formed by protruding the outer side surface of the top plate 121 outwards, and referring to the orientation in fig. 3, the annular water accumulation table is disposed as an annular bulge with a right side higher than a left side bottom, so that the water level accumulated on the right side is higher than the water level accumulated on the left side, and the water accumulation coverage area is larger, so as to further improve the cooling effect. As a preferred arrangement, the cross-sectional shape of the annular water platform is set to be the same as the edge shape of the top plate 121, so that the water accumulated in the annular water platform can cover more of the entire top plate 121 to maximize the cooling effect. Based on the setting of annular ponding platform, when the comdenstion water that accumulates of the inside wall of outer box 11 drips, the water that drips to in the annular ponding platform can be accumulated in the annular ponding platform, just can flow from it when the water level surpasss the vertical height of annular ponding platform to further reduce the temperature in the internal box 12 of retaining in-process and handle, thereby the inside temperature in the box 12 in furthest assurance, and then effectively guarantee the normal work of computer board 14. It should be noted that although the annular water accumulation table is described as being formed integrally with the top plate 121 in the preferred embodiment, it may be a separate element that is connected to the top of the top plate 121, which is not restrictive.

With continued reference to fig. 5, a cross-sectional view taken along plane C-C of fig. 2 is shown. As shown in fig. 2, 3 and 5, in the preferred embodiment, the connecting column 13 has a square cross-sectional shape; it should be noted that the present invention does not limit the specific shape, number and position of the connecting column 13, as long as at least a portion of the connecting column 13 is located between the outer case 11 and the inner case 12, so that the outer case 11 and the inner case 12 are connected by the connecting column 13 and the heat conducting cavity 101 is formed therebetween. For example, the connecting column 13 may also be cylindrical; the number of the connecting columns 13 can be one or more; the connecting column 13 can also be arranged on the side. This is not restrictive and the skilled person can adjust himself according to the actual use requirements.

Specifically, with continued reference to fig. 3, as shown in fig. 3, the top of the pin 141 is connected to the computer board 14, and preferably welded, so as to ensure the connection effect and effectively ensure the fastening degree thereof, the middle of the pin 141 extends through the entire connection post 13, and the bottom thereof extends to the outside of the connection post 13. It should be noted that, a technician may set the specific number and structure of the pins 141 according to the actual use requirement, for example, the number of the pins 141 is set according to the number of wires, and for example, the pins 141 are selectively covered with an insulating rubber according to the actual use requirement, which is not limiting, and the technician may adjust the number and structure according to the actual use requirement. The connecting wire on the computer board 14 is provided with the long needle-shaped pin 141, so that the connecting reliability is effectively ensured, and the problem that the connecting wire is easy to break is effectively avoided; and the pin 141 can extend to the outside of the outer box 11 from the inner box 12, so that a technician can directly connect the wire through the pin 141 part positioned outside without opening the electric cabinet, the electric cabinet can maintain a better sealing state, and even can be directly connected into a whole in a bonding mode, so that the tightness of the electric cabinet can be effectively ensured, and the influence of external sundries entering the inner box 12 on the normal work of the computer board 14 can be effectively prevented.

Further, as a preferable configuration, the connection column 13 includes a first heat radiating portion 131 and a second heat radiating portion 132, wherein the first heat radiating portion 131 is provided between the inner case 12 and the outer case 11, the second heat radiating portion 132 is provided outside the outer case 11, the first heat radiating portion 131 and the second heat radiating portion 132 are integrally connected, and the pins 141 can penetrate the entire connection column 13. It should be noted that the specific material used for the connecting column 13 is not limited in the present invention, and the technical personnel can set the material according to the actual use requirement; preferably, the connecting column 13 is made of rubber materials with good heat conduction performance and good insulating performance, and the pin 141 can be directly arranged on the connecting column 13 in a penetrating mode, so that the heat dissipation effect is guaranteed, and meanwhile the insulating effect can be effectively considered.

Furthermore, the first heat dissipation part 131 is a square cylinder structure, and a square column heat dissipation cavity 1311 is formed inside the first heat dissipation part, which is obviously not limiting, and technicians may set the specific shape of the heat dissipation cavity 1311 according to actual use requirements; for example, the heat dissipation chamber 1311 may also be cylindrical. And, the pins 141 penetrate the first heat sink member 131 through the heat dissipation chamber 1311, so that the pins 141 can be better dissipated in the heat dissipation chamber 1311, and heat can be transferred into the inner case 12 through the top of the heat dissipation chamber 1311, so as to effectively prevent the problem of the pins 141 having an excessively high temperature. Meanwhile, the pins 141 are inserted into the second heat sink 132 to be better fixed, so that the operation reliability of the computer board 14 is effectively ensured, the normal operation of the air conditioner is effectively ensured, and the distance between different pins 141 can be better maintained, so that the different pins 141 can be effectively ensured to maintain respective normal operation, and the reliability of the air conditioner is further improved. Preferably, the first heat sink member 131, the outer case 11 and the inner case 12 are made of plastic, and the first heat sink member 131, the outer case 11 and the inner case 12 are integrally injection-molded, and the second heat sink member 132 is made of a rubber material and separately adhered to the bottom of the outer case 11 so as to be connected with the first heat sink member 131 as a single body, thereby effectively simplifying the production process thereof.

It should be noted that the structure of the connecting column 13 in the preferred embodiment is only a preferred arrangement, but is not limited to this, and a technician can set the specific structure, shape and position of the connecting column 13 according to the actual use requirement; for example, the height of the first heat sink member 131 is set according to the design requirement of the heat conduction cavity 101 between the outer case 11 and the inner case 12. Changes in this particular arrangement do not depart from the basic principles of the invention and are intended to be within the scope of the invention.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent that the scope of the present invention is not limited to these specific embodiments, as will be readily understood by those skilled in the art. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.

Claims

1. An electric cabinet for an air conditioner is characterized in that the electric cabinet comprises an outer box body and an inner box body arranged in the outer box body,

the inner case and the outer case are connected by at least one connecting member and thus a heat conductive chamber is formed between the inner case and the outer case,

a computer board is arranged in the inner box body, at least one pin is arranged on the computer board, the pin penetrates through the connecting component and extends to the outside of the outer box body,

the outer box body is provided with a semiconductor refrigerating sheet, the cold surface of the semiconductor refrigerating sheet is positioned at one side close to the inner box body,

the outer box body is further provided with at least one through hole, and the heat conduction cavity is communicated with the outside through the through hole.

2. The electric cabinet according to claim 1, wherein an opening structure is arranged at the top of the outer box body, and the semiconductor refrigeration sheet is arranged at the opening and covers the opening.

3. The electric cabinet according to claim 1, wherein the computer board is disposed adjacent to the first side, and the top plate of the inner box body is disposed to be inclined downward from the first side to the second side;

wherein the first side and the second side are opposite.

4. The electric cabinet according to claim 3, characterized in that an annular water collecting platform is arranged on the outer top surface of the inner box body so as to accumulate condensed water for cooling.

5. The electric cabinet according to claim 1, wherein the connecting member includes a first heat sink member and a second heat sink member connected,

the first heat dissipation part is arranged between the inner box body and the outer box body, and the second heat dissipation part is arranged outside the outer box body.

6. The electric cabinet according to claim 5, wherein a heat dissipation cavity is formed in the first heat dissipation part, and the pins penetrate through the first heat dissipation part through the heat dissipation cavity.

7. The electric cabinet according to any one of claims 1 to 6, wherein the computer board is disposed near a bottom of the inner box.

8. The electric cabinet according to claim 7, wherein the through hole is a drain hole, and the height of the drain hole in the vertical direction is between the vertical height of the computer board and the vertical height of the bottom plate of the inner box.

9. The electric cabinet according to any one of claims 1 to 6, wherein the inner box body is rectangular parallelepiped in shape; and/or

The outer box body is cuboid in shape.

10. An air conditioner characterized in that it comprises an electric cabinet according to any one of claims 1 to 9.