Electric appliance box heat dissipation structure and air conditioner

Abstract

The application discloses an electric appliance box heat dissipation structure and an air conditioner, which comprises a shell, a fan assembly is arranged in the shell to form an air duct, and a heat dissipation assembly is further arranged; one part of the heat dissipation assembly is arranged on the air duct, and the other part is arranged outside the shell. The heat dissipation structure can uniformly distribute the temperature in the electric appliance box, prevent the temperature in a local area of the electric appliance box from being too high, and prevent the heat generating components from being overheated, reduced in service life or even burned due to high temperature. Meanwhile, the heat in the shell can be dissipated through the heat dissipation assembly, the heat dissipation efficiency is improved, and the heat on the micro-channel radiator can be quickly dissipated outside through the fan system of the multi-connected machine.

Description

TECHNICAL FIELD

[0001] The present application relates to the air conditioning technical field, specifically, it relates to a kind of electric appliance box heat dissipation structure and air conditioner. BACKGROUND

[0002] Air conditioner electric appliance element heat dissipation has been the difficulty of industry, since air conditioner electric appliance element operation work generates heat, temperature is too high to cause electric appliance element less life, operating efficiency reduces, even burns electric appliance element.Electronic control box as the control center of unit, reliability problem directly influences unit normal use, electric appliance box temperature rise has been the problem of industry, in prior art, window heat dissipation channel is carried out obvious heat dissipation effect, but in the installation environment of commercial air conditioner, electric appliance box window heat dissipation reliability will exist hidden trouble, such as water and dust problem;If not window, electronic control box internal temperature rise will become bad, internal temperature cannot be dissipated, internal air cannot flow, form heat accumulation, in turn cause component overheat life reduction or even high-temperature burnout. SUMMARY

[0003] The present application proposes a kind of electric appliance box heat dissipation structure and air conditioner to solve the technical problems of low heat dissipation efficiency of electric appliance box in the prior art.

[0004] The technical scheme adopted by the present application is:

[0005] The present application proposes a kind of electric appliance box heat dissipation structure, comprising: shell, the shell is equipped with fan assembly to form air duct, further comprising heat dissipation assembly, part of the heat dissipation assembly is arranged on the air duct, another part is arranged outside the shell.

[0006] Further, the shell is divided into first cavity and second cavity by partition, and the upper and lower communication parts of the first cavity and the second cavity are both provided with the fan assembly to form internal circulation air duct.

[0007] Further, the first cavity is installed heat generating component, part of the heat dissipation assembly is arranged in the second cavity and opposite to the position of the heat generating component, the air of the first cavity is driven to flow from bottom to top by the fan assembly.

[0008] In one embodiment of heat dissipation assembly, the heat dissipation assembly comprises: first fixed plate and second fixed plate arranged in parallel and spaced apart, a plurality of first fins arranged between the first fixed plate and the second fixed plate, a plurality of second fins arranged outside the second fixed plate, the first fixed plate is connected with the partition, and the second fixed plate is connected with the shell.

[0009] Specifically, a plurality of through holes are provided on the first fin.

[0010] In another embodiment of the heat dissipation assembly, a heat conducting member and a refrigerant pipe are arranged between the first fixing plate and the second fixing plate, and the heat conducting member is provided with a pipe hole through the refrigerant pipe.

[0011] Further, the partition plate is provided with a second opening, the first fixing plate is connected with the partition plate and covers the second opening, and the heat generating component is attached to the first fixing plate.

[0012] Preferably, the fan of the fan assembly is a centrifugal fan.

[0013] The application further provides an air conditioner comprising the above-mentioned electric appliance box heat dissipation structure.

[0014] Further, the housing is arranged in an outdoor unit of the air conditioner, and the housing is located on a heat dissipation air duct of the outdoor unit.

[0015] Compared with the prior art, the heat dissipation structure can uniformly distribute the temperature in the electric appliance box, prevent the temperature in a local area of the electric appliance box from being too high, and prevent the heat generating component from overheating, reducing the service life or even being burned by high temperature. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the application, and for those skilled in the art, other drawings can be obtained without creative labor under the premise of these drawings.

[0017] Figure 1 is a schematic view of the three-dimensional structure of the embodiment of the application;

[0018] Figure 2 is a schematic view of the three-dimensional structure of the embodiment of the application when the electric appliance box cover is opened;

[0019] Figure 3 is a schematic view of the structure in the second cavity in the embodiment of the application;

[0020] Figure 4 is a schematic view of the structure in the first cavity in the embodiment of the application;

[0021] Figure 5 is a schematic view of the internal circulation structure in the embodiment of the application;

[0022] Figure 6 is a schematic view of the heat dissipation assembly in an embodiment of the application;

[0023] Figure 7Structure diagram of the heat dissipation assembly in another embodiment of the present application;

[0024] Figure 8 Structure diagram of the hidden back plate of the shell in another embodiment of the present application;

[0025] Figure 9 Structure diagram of the outdoor unit of the present application;

[0026] 1, shell; 11, partition; 111, first cavity; 112, second cavity;

[0027] 2, heat dissipation assembly; 21, first fixed plate; 22, second fixed plate; 23, first fin; 24, second fin; 231, through hole; 25, heat conducting member; 26, refrigerant pipe;

[0028] 3, electric appliance box cover; 4, heat generating component; 5, second fan assembly; 6, first fan assembly; 7, outdoor unit; 8, outdoor fan. DETAILED DESCRIPTION

[0029] In order to make the technical problems to be solved by the present application, technical solutions and beneficial effects more clear and explicit, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0030] The principles and structures of the present application will be described in detail below in combination with the drawings and embodiments.

[0031] The existing electric appliance box is in one of the fully closed form and the form with a heat dissipation window. Although the form with a heat dissipation window is beneficial to the heat dissipation of the electric appliance box, it has hidden dangers in reliability in the commercial air conditioner installation environment, such as moisture, mosquitoes, rats and the like. The fully closed electric appliance box can effectively solve the problem, but the internal temperature of the electric control box will become worse because the internal temperature cannot be dissipated and the internal air cannot flow, forming heat accumulation, which further leads to overheating of the components in the electric appliance box, reducing the service life or even burning out at high temperature. To this end, the present application sets an internal circulation air duct in the electric appliance box to evenly distribute the internal temperature, and simultaneously dissipates the internal temperature of the electric appliance box quickly through a double-layer micro-channel heat exchanger to improve the heat dissipation efficiency.

[0032] As Figure 1 , 3As shown in Figures 4 and 5, this invention proposes a heat dissipation structure for an electrical box, mainly comprising: a casing 1, a first fan assembly 6, a second fan assembly 5, and a heat dissipation assembly 2. The space inside the casing is divided into two adjacent parts. Various heat-generating components 4 are installed in one part, and the heat dissipation assembly 2 is installed in the other part. The upper and lower parts of the two divided parts inside the casing are respectively opened up, allowing the air in the two parts separated by the casing 1 to circulate internally by placing the fan assembly at the opened position, thus forming an internal circulation air duct. One part of the heat dissipation assembly 2 is placed on this internal circulation air duct to absorb heat, while the other part of the heat dissipation assembly 2 is placed outside the casing 1 to transfer heat to the outside of the casing for heat dissipation, allowing the high temperature accumulated inside the electrical box (i.e., the casing) to dissipate. The heat dissipation structure proposed in this invention can both even out the temperature inside the electrical box, preventing excessively high temperatures in localized areas that could lead to overheating, reduced lifespan of heat-generating components, or even high-temperature burnout, and simultaneously dissipate heat from the casing through the heat dissipation assembly, improving heat dissipation efficiency.

[0033] In the above embodiments, the housing is a fully sealed housing. In other embodiments, the housing may also be a housing with heat dissipation windows. A fan assembly is provided inside the housing to form an air duct. Part of the heat dissipation assembly is provided inside the air duct, and the other part is provided outside the housing. This can also allow the heat inside the housing to be quickly dissipated and improve the heat dissipation efficiency.

[0034] In specific embodiments, such as Figures 1 to 5 As shown, the front of the casing has an electrical box cover 3 (also called a shell cover). The electrical box cover 3 can be opened, and a partition 11 is provided inside the casing 1. The partition 11 is parallel to the electrical box cover 3 when it is closed. The partition 11 divides the space inside the electrical box into a first cavity 111 and a second cavity 112. The side of the first cavity 111 closest to the electrical box cover 3 is used to install the heating element 4. The heating element 4 or its main board can be directly installed on the partition 11 (or directly on the heat dissipation assembly 2). The heat dissipation assembly 2 is installed in the second cavity 112. The position of the heat dissipation assembly 2 corresponds to that of the heating element 4, so that the heat of the heating element 4 can be directly conducted to the heat dissipation assembly 2 through contact conduction. Fan assemblies are provided at the upper and lower connections of the first cavity 111 and the second cavity 112. Driven by the fan assemblies, the air in the first cavity and the second cavity 112 is circulated to even out the temperature inside the electrical box.

[0035] Specifically, the first fan assembly 6 is arranged at the upper communication part of the first cavity 111 and the second cavity 112, the first fan assembly 6 inhales air from the first cavity and blows out air from the second cavity; the second fan assembly 5 is arranged at the lower communication part of the first cavity 111 and the second cavity 112, the second fan assembly 5 inhales air from the second cavity 112 and blows out air from the first cavity 111, so that the air in the first cavity 111 flows from bottom to top, and the air in the second cavity 112 flows from top to bottom, because of the hot air principle, the air with high temperature rises from bottom to top, the heat of the heating component continuously flows to the top of the first cavity, and the hot air can be avoided from gathering at the top of the electric appliance box and the air in the electric appliance box can be continuously circulated.

[0036] Specifically, the first fan assembly 6 and the second fan assembly 5 are centrifugal fans, the centrifugal fan blows out air in all directions at the same time, and the uniformity of air circulation can be further improved, so that the temperature in the shell is uniform and local overheating is avoided.

[0037] In the first embodiment, as shown in FIG. 1, the heat dissipation assembly 2 specifically comprises a first fixed plate 21, a second fixed plate 22 and a plurality of first fins 23 and second fins 24, the first fixed plate and the second fixed plate are arranged in parallel and spaced apart, the first fins are arranged vertically and spaced apart between the first fixed plate and the second fixed plate, and the second fins are arranged on the outer side of the second fixed plate in a spaced apart manner. Figure 6 Thus, the heat dissipation assembly is divided into two layers by the first fixed plate and the second fixed plate, the first fins between the first fixed plate and the second fixed plate form a first layer of micro-channel heat dissipation structure, and the second fins outside the second fixed plate form a second layer of micro-channel heat dissipation structure. The fins are spaced apart to form micro-channels for air flow.

[0038] Specifically, a plurality of through holes 231 are arranged on the first fins 23 between the first fixed plate 21 and the second fixed plate 22, so as to improve the heat exchange efficiency.

[0039] In the second embodiment, the heat dissipation assembly 2 specifically comprises a first fixed plate 21, a second fixed plate 22 and a plurality of fins, the first fixed plate and the second fixed plate are arranged in parallel and spaced apart, the fins are arranged vertically and spaced apart on the first fixed plate, the fins penetrate the second fixed plate and are fixed with the second fixed plate, a plurality of strip-shaped holes for the fins to penetrate are arranged on the second fixed plate in advance, and the fins are sealingly connected with the second fixed plate. Thus, the heat dissipation assembly is divided into two layers by the first fixed plate and the second fixed plate, the fins between the first fixed plate and the second fixed plate form a first layer of heat dissipation structure, and the fins outside the second fixed plate form a second layer of heat dissipation structure. The fins are spaced apart to form micro-channels for air flow.

[0040] Specifically, a plurality of through holes are arranged on the fins between the first fixed plate and the second fixed plate, so as to improve the heat exchange efficiency.

[0041] When installed, the back of the shell 1 is provided with an opening (the area of the opening can be equal to or greater than the area of the first fixed plate 21) corresponding to the installation position of the heat dissipation assembly 2, and the area of the first fixed plate 21 can be slightly smaller than the area of the second fixed plate 22, so that the first fixed plate 21 can extend into the opening and be fixedly connected with the partition plate 11, while the second fixed plate 22 just covers the opening, and the second fixed plate 22 is fixed with the back of the shell 1, so that the first fixed plate 21 and the first fins 23 are located in the second cavity 112 to absorb heat, and the second fins 24 are located outside the shell 1 and can dissipate heat through the airflow passing through the outside of the shell, so that the heat in the shell is conducted and dissipated through the fins.

[0042] In the third embodiment, as shown in Figure 7 The heat dissipation assembly specifically includes: a first fixed plate 21, a second fixed plate 22, a first fin 23, a second fin 24, a heat-conducting piece 25, and a refrigerant pipe 26. The first fixed plate 21 and the second fixed plate 22 are arranged in parallel and spaced apart. The first fin 23 is arranged vertically and spaced apart between the first fixed plate and the second fixed plate. The second fixed plate is provided with the second fin 24. Thus, the heat dissipation assembly 2 is divided into two layers by the first fixed plate 21 and the second fixed plate 22. The fins between the first fixed plate 21 and the second fixed plate 22 form a first layer of micro-channel heat dissipation structure, and the fins outside the second fixed plate form a second layer of micro-channel heat dissipation structure. The fins are spaced apart to form micro-channels for airflow to pass through. The heat-conducting piece 25 is installed between the first fixed plate 21 and the second fixed plate 22. The heat-conducting piece 25 is provided with two parallel pipe holes, so that the U-shaped refrigerant pipe 26 can be connected with the heat-conducting piece 25 by passing through the pipe holes. By increasing the refrigerant pipe for heat exchange, the heat exchange efficiency is improved.

[0043] As shown in Figure 8 The refrigerant pipe can pass through the heat-conducting pieces 25 of multiple heat dissipation assemblies at the same time, that is, multiple heat dissipation assemblies are cooled at the same time, further improving the heat exchange efficiency.

[0044] In order to further improve the installation effect, during installation, the back of the shell 1 is provided with an opening corresponding to the installation position of the heat dissipation assembly 2 (the area of the opening can be equal to or greater than the area of the first fixing plate), and the position of the heat generating component 4 installed on the partition plate 11 is also provided with a second opening, the area of the second opening is smaller than the area of the first fixing plate 21, and the area of the first fixing plate 21 can be slightly smaller than the area of the second fixing plate 22. The first fixing plate 21 can extend into the opening and be fixedly connected with the partition plate 11 and cover the second opening on the partition plate 11, and the second fixing plate 22 just covers the opening, and the second fixing plate 22 is fixed to the back of the shell 1 (the fixed position can be provided with a sealing ring, sealing glue and the like to prevent air leakage), the heat generating component 4 is directly installed on the first fixing plate 21, and can be fixed by hot melt adhesive, so that heat is directly conducted to the first fixing plate 21 and then to the fins, and the first fins 23 between the first fixing plate 21 and the second fixing plate 22 are also located in the second cavity 112 for heat absorption, and the fins outside the second fixing plate 22 are located on the outside of the shell 1 and can be cooled by air flow passing through the outside of the shell, so that heat in the shell is conducted and dissipated through the fins.

[0045] The application further provides an air conditioner comprising the electric appliance box heat dissipation structure.

[0046] The air conditioner can be a multi-split unit, and the outdoor unit is a top air outlet fan system, so that heat on the second layer of micro-channel heat dissipation structure and the second fins is quickly dissipated outside.

[0047] As shown in the figure, Figure 9 The air conditioner specifically comprises an outdoor unit 7, and the outdoor unit 7 is provided with an outdoor fan 8, a heat dissipation air duct can be formed in the outdoor unit 7, and the shell 1 is arranged on the heat dissipation air duct, so that the fins located on the outside of the shell of the heat dissipation assembly 2 are located on the heat dissipation air duct, heat dissipation of the fins is facilitated, and the heat dissipation efficiency of the electric appliance box is further improved.

[0048] It should be noted that the terms used above are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0049] The foregoing description, for purposes of clarity, describes the present application in terms of its components, processes and operations. Such descriptions and representations are the means used by those skilled in the art of describing the structural and functional necessities of and changes to the present application, but are not meant to limit the present application to a particular embodiment. Also, the terms "first", "second", "third", etc., as used in this specification, are used as identifiers to help distinguish between similar items, and are not meant to denote a particular order or sequence. Unless otherwise specifically stated, the relative arrangements of parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the application. Also, it is to be understood that the drawings are not necessarily to scale and that, unless otherwise specifically indicated, the various dimensions and other values are merely illustrative and not restrictive. The techniques, methods, and devices known to those of ordinary skill in the art can not be discussed in detail, but should be considered as if they were discussed herein, to the extent that they are relevant to the description of the present application. In all examples shown and discussed herein, any specific value should be interpreted as merely an example, and not as a limitation. Thus, other examples of the exemplary embodiments can have different values. It is to be noted that like reference numerals and letters refer to like items in the drawings, and, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0050] In the description of the present application, it is to be understood that the orientation or positional relationships indicated by orientation words such as "front, back, upper, lower, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" and the like are generally based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate and imply that the devices or elements referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0051] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial positional relationship of one device or feature with respect to other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the devices as described in the drawings. For example, if the devices in the drawings are inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" the other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0052] In addition, it should be noted that the use of the words "first", "second", and the like to define parts of components is merely for the convenience of distinguishing the corresponding parts of components, and the words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0053] The above merely provides the preferred embodiments of the present application, and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the principles and technical scope of the present application shall fall into the scope of the present application.

Claims

1. A heat dissipation structure for an electrical appliance box, comprising: A housing, wherein a fan assembly is provided inside the housing to form an air duct, characterized in that it further includes a heat dissipation assembly, a portion of which is disposed on the air duct and another portion is disposed outside the housing; The housing is divided into a first cavity and a second cavity by a partition. The fan assembly is provided at the upper and lower communication points of the first cavity and the second cavity to form an internal circulation air duct. The heat dissipation assembly includes: a first fixing plate and a second fixing plate arranged in parallel and at intervals, a plurality of first fins disposed between the first fixing plate and the second fixing plate, a plurality of second fins disposed on the outside of the second fixing plate, the first fixing plate being connected to the partition plate, and the second fixing plate being connected to the housing. A heat-conducting component and a refrigerant pipe are disposed between the first fixing plate and the second fixing plate, and the heat-conducting component is provided with a pipe hole through which the refrigerant pipe passes; The partition has a second opening, the first fixing plate is connected to the partition and covers the second opening, and the heating element is installed in the first cavity at the position of the second opening and is attached to the first fixing plate.

2. The heat dissipation structure of the electrical box as described in claim 1, characterized in that, The first cavity is equipped with heating elements, and a portion of the heat dissipation assembly is disposed in the second cavity. The fan assembly drives the air in the first cavity to flow from bottom to top.

3. The heat dissipation structure of the electrical box as described in claim 1, characterized in that, The first fin has multiple through holes.

4. The heat dissipation structure of the electrical box as described in claim 1, characterized in that, The fan in the fan assembly is a centrifugal fan.

5. An air conditioner, characterized in that, Includes the heat dissipation structure of the electrical box as described in any one of claims 1 to 4.

6. The air conditioner as described in claim 5, characterized in that, The housing is installed inside the outdoor unit of the air conditioner, and the housing is located on the heat dissipation duct of the outdoor unit.

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