Efficient heat dissipation electric appliance box and range hood comprising same

Abstract

The utility model provides an efficient heat dissipation electric appliance box and a range hood comprising the same, the efficient heat dissipation electric appliance box comprises a box body, the box body comprises an upper box body and a lower box body, the upper box body covers the lower box body, a power panel is arranged in the lower box body, the bottom of the upper box body is provided with an air outlet, a first air inlet and a second air inlet which are communicated with the lower box body, and the first air inlet and the second air inlet are communicated with the lower box body. The first air inlet and the second air inlet are located at the two ends of the bottom of the upper box body respectively, the air outlet is located between the first air inlet and the second air inlet, a double-outlet fan is further arranged above the position, corresponding to the air outlet, of the upper box body, and a double-circulation air channel is formed between the upper box body and the lower box body under the action of the double-outlet fan. Air flow of the upper box body and the lower box body is enhanced, electrical components on the power panel in the lower box body are effectively cooled, the power panel is arranged in the lower box body, the double-outlet fan is arranged in the upper box body, the double-outlet fan is separated from the power panel, and damage to the electrical components on the power panel due to accidental falling is avoided.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to a high-efficiency heat dissipation electrical box and a range hood containing the same. Background Technology

[0002] The electrical box in a range hood is designed to centrally house and protect electrical components such as the controller and power cord. These components are housed on a power board, which is then placed inside the electrical box. To prevent the impact of cooking fumes on these components, the electrical box is typically sealed. However, as the airflow of range hoods increases, the required power also rises significantly, causing the temperature of the electrical components to increase. If this internal heat cannot dissipate in time, it can exceed standard limits, affecting safe operation and posing safety hazards. In the prior art, a fan is installed inside the electrical box to force airflow and cool the electrical components. However, this method has the following disadvantages: (1) The electrical box is sealed, and the airflow blown out by the fan is quickly sucked back by the fan inlet, forming a "short circuit" effect. Therefore, the air turbulence is only in a small area around the fan. In areas far from the fan, the air is still difficult to flow, resulting in the temperature of the power board far from the fan being still very high, which cannot play an effective and uniform cooling role; (2) If an opening is made in a suitable position in the electrical box, the internal fan can effectively deliver airflow, and the cooling effect of the power board electrical components is significantly improved. However, oil fume particles are easy to enter the electrical box, which greatly reduces the service life of the electrical components; (3) The fan is set around the power board. Due to environmental reasons, the fan may become loose, which may cause the sharp blades to rotate and scratch the surrounding electrical components, causing the range hood to malfunction. Therefore, it is necessary to provide a high-efficiency heat dissipation electrical box and a range hood containing it. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defects of existing electrical boxes, such as the inability to effectively cool down electrical components and the inability to use stably for a long time due to the influence of oil fume particles, and to provide a high-efficiency heat dissipation electrical box and a range hood containing it.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] This utility model provides a high-efficiency heat dissipation electrical box, which includes a box body, comprising an upper box body and a lower box body. The upper box body covers the lower box body, and a power board is disposed inside the lower box body. The bottom of the upper box body is provided with an air outlet, a first air inlet, and a second air inlet that communicate with the lower box body. The first air inlet and the second air inlet are respectively located at both ends of the bottom of the upper box body. The air outlet is located between the first air inlet and the second air inlet. A dual-outlet fan is also provided above the upper box body corresponding to the air outlet. Under the action of the dual-outlet fan, a dual-circulation air duct is formed between the upper box body and the lower box body.

[0006] In this design, the enclosure is divided into an upper and lower enclosure. The power board is located in the lower enclosure, and the dual-outlet fans are located in the upper enclosure. This separation of the dual-outlet fans from the power board prevents damage to the electrical components on the power board from accidental drops. An air outlet, a first air inlet, and a second air inlet are located at the bottom of the lower enclosure to connect the upper and lower enclosures. The first and second air inlets are located at opposite ends of the bottom of the upper enclosure, and the air outlet is located between the first and second air inlets. Under the action of the dual-outlet fans, a dual-circulation air duct is formed between the upper and lower enclosures. Air in the lower enclosure is drawn into the dual-outlet fans through the air outlet, enters the upper enclosure, and returns to the lower enclosure through the first and second air inlets, respectively. It is then drawn into the fans again through the air outlet for another dual circulation, enhancing airflow between the upper and lower enclosures, avoiding dead zones, and effectively cooling the power board in the lower enclosure.

[0007] Preferably, the dual-outlet fan includes a first outlet and a second outlet arranged opposite to each other, and the dual-circulation air duct includes a first circulation air duct and a second circulation air duct. The first circulation air duct is connected in sequence to the air outlet, the first outlet, and the first air inlet in the upper box, and extends from the first air inlet to the air outlet in the lower box. The second circulation air duct is connected in sequence to the air outlet, the second outlet, and the second air inlet in the upper box, and extends from the second air inlet to the air outlet in the lower box.

[0008] In this solution, the dual-outlet fan includes a first outlet and a second outlet arranged opposite to each other. Through the arrangement of the first air inlet, the second air inlet, and the air outlet, and in combination with the structure of the upper and lower boxes, a dual-circulation air duct is formed on both sides of the electrical box, which enhances the airflow of the electrical box and effectively cools the power board in the lower box.

[0009] Preferably, the upper housing is provided with a heat dissipation component, which is located between the first air inlet and the first outlet; and / or, the heat dissipation component is located between the second air inlet and the second outlet.

[0010] In this design, a heat dissipation component is installed on the upper housing. The heat dissipation component is located between the first air inlet and the first air outlet, and / or between the second air inlet and the second air outlet. Hot air from the lower housing enters the upper housing through the first and second air outlets under the action of the dual-outlet fans. After being further cooled by the heat dissipation component, it enters the lower housing from both ends through the first and second inlets. Then, it is drawn into the dual-outlet fans from the air outlet for another double cycle, improving the heat dissipation effect on the power board. At the same time, the heat dissipation component transfers heat to the upper housing, and the upper housing undergoes natural convection cooling with the atmosphere.

[0011] Preferably, the heat dissipation component is a heat dissipation fin group, which includes multiple heat dissipation fins, and heat dissipation channels are formed between adjacent heat dissipation fins.

[0012] In this design, multiple heat dissipation fins are provided, and a heat dissipation channel is formed between two adjacent heat dissipation fins to allow airflow. This can improve the heat exchange efficiency between hot air and the heat dissipation fins and reduce the temperature of the airflow entering the lower housing.

[0013] Preferably, at the bottom of the upper box body, a first guide plate extending towards the lower box body is provided between the air outlet and the first air inlet, and a first guide plate extending towards the lower box body is provided between the air outlet and the second air inlet. A first guide plate and a second guide plate extending towards the lower box body are provided on one side of the box body.

[0014] In this design, within the lower housing, the first guide plate is located downstream of the first air inlet, and the second guide plate is located upstream of the second air inlet. These guide plates can respectively direct the airflow entering the lower housing from the first and second air inlets downwards, adjusting the airflow direction and path, allowing more airflow to pass over the electrical components on the power board, thereby improving the cooling effect of the electrical components on the power board.

[0015] Preferably, the area of ​​the first air inlet is smaller than the area of ​​the second air inlet, and the lower part of the second air inlet corresponds to the high-voltage side of the power board; or the area of ​​the first air inlet is larger than the area of ​​the second air inlet, and the lower part of the first air inlet corresponds to the high-voltage side of the power board.

[0016] In this design, the first and second air inlets are designed with different areas to reasonably allocate heat dissipation for electrical components in different locations, allowing more air to enter the high-voltage side and avoiding the phenomenon that some electrical components are very cold while others are overheated, thus ensuring that the overall cooling meets the requirements.

[0017] Preferably, the upper box and the lower box are metal boxes;

[0018] Alternatively, the upper box and the lower box may be made of iron or aluminum.

[0019] In this design, the upper and lower boxes are metal boxes, preferably iron or aluminum boxes, which have good structural strength and thermal conductivity. They not only provide support and protection, but also allow hot air to transfer heat to the upper and lower boxes in a timely manner upon contact, and facilitate natural convection cooling with the ambient atmosphere, further reducing heat dissipation.

[0020] Preferably, a sealing strip is provided at the joint between the upper box and the lower box.

[0021] In this design, the upper and lower boxes are sealed together by a sealing strip to prevent air leakage between the inside of the electrical box and the outside.

[0022] Preferably, the outer wall of the upper box is provided with a first connector, and the outer periphery of the lower box is provided with a second connector that cooperates with the first connector, and the first connector and the second connector are engaged with each other.

[0023] In this design, the upper and lower housings are detachably connected via a first connector and a second connector, facilitating the installation and maintenance of the equipment.

[0024] This utility model also provides a range hood, which includes the high-efficiency heat dissipation electrical box as described above.

[0025] The positive and progressive effects of this utility model are as follows: the box body is configured as an upper box body and a lower box body, the power board is placed in the lower box body, and the dual-outlet fan is placed in the upper box body, that is, the dual-outlet fan is separated from the power board to avoid damage to the electrical components on the power board due to accidental drops. An air outlet, a first air inlet, and a second air inlet are set at the bottom of the lower box body to connect the upper box body and the lower box body. The first air inlet and the second air inlet are respectively located at the two ends of the bottom of the upper box body, and the air outlet is located between the first air inlet and the second air inlet. Under the action of the dual-outlet fan, a double circulation air duct is formed between the upper box body and the lower box body. The air in the lower box body is drawn into the dual-outlet fan from the air outlet, enters the upper box body, and returns to the lower box body from the first air inlet and the second air inlet respectively, and is then drawn into the dual-outlet fan from the air outlet to perform the next double circulation, which enhances the air flow between the upper box body and the lower box body and effectively cools the power board in the lower box body. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an electrical box according to an embodiment of the present invention.

[0027] Figure 2 This is an internal cross-sectional view of an electrical box according to an embodiment of the present invention in one direction.

[0028] Figure 3 This is a schematic diagram of the upper box body according to an embodiment of the present invention.

[0029] Figure 4 This is an internal cross-sectional view of the upper box body in one direction according to an embodiment of the present invention.

[0030] Figure 5 This is a schematic diagram of the lower box body according to an embodiment of the present invention.

[0031] Explanation of reference numerals in the attached figures

[0032] Electrical Box 1

[0033] Upper box 2

[0034] Lower box 3

[0035] Air outlet 4

[0036] First air inlet 5

[0037] Second air inlet 6

[0038] Dual-outlet fan 7

[0039] First Exit 8

[0040] Second Exit 9

[0041] Heat dissipation fins 10

[0042] First deflector plate 11

[0043] Second deflector 12

[0044] Power board 13

[0045] Sealing strip 14

[0046] First connector 15

[0047] Second connector 16 Detailed Implementation

[0048] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0049] This utility model provides a high-efficiency heat dissipation electrical box 1, such as Figures 1-5 As shown, the high-efficiency heat dissipation electrical box 1 includes a box body, which includes an upper box body 2 and a lower box body 3. The upper box body 2 covers the lower box body 3. A power board 13 is installed inside the lower box body 3. The bottom of the upper box body 2 is provided with an air outlet 4, a first air inlet 5, and a second air inlet 6 that connect to the lower box body 3. The first air inlet 5 and the second air inlet 6 are located at opposite ends of the bottom of the upper box body 2, respectively. The air outlet 4 is located between the first air inlet 5 and the second air inlet 6. A dual-outlet fan 7 is also provided above the air outlet 4 on the upper box body 2. Under the action of the dual-outlet fan 7, a dual-circulation air duct is formed between the upper box body 2 and the lower box body 3. The dual-outlet fan 7 includes a first outlet 8 and a second outlet 9 arranged opposite to each other. The dual-circulation air duct includes a first circulation air duct A and a second circulation air duct B. The first circulation air duct A connects to the air outlet 4, the first outlet 8 and the first air inlet 5 in sequence in the upper box 2, and extends from the first air inlet 5 to the air outlet 4 in the lower box 3. The second circulation air duct B connects to the air outlet 4, the second outlet 9 and the second air inlet 6 in sequence in the upper box 2, and extends from the second air inlet 6 to the air outlet 4 in the lower box 3.

[0050] The housing is configured as an upper housing 2 and a lower housing 3. The power board 13 is located inside the lower housing 3, and the dual-outlet fan 7 is located inside the upper housing 2, thus separating the dual-outlet fan 7 from the power board 13 to prevent damage to the electrical components on the power board 13 in case of accidental drops. An air outlet 4, a first air inlet 5, and a second air inlet 6 are provided at the bottom of the lower housing 3 to connect the upper housing 2 and the lower housing 3. The first air inlet 5 and the second air inlet 6 are located at opposite ends of the bottom of the upper housing 2, and the air outlet 4 is located between the first air inlet 5 and the second air inlet 6. Between the second air inlet 6 and the second air inlet 7, a double-circulation air duct is formed between the upper box 2 and the lower box 3. Air in the lower box 3 is drawn into the double-air inlet 7 through the air outlet 4, enters the upper box 2, and returns to the lower box 3 through the first air inlet 5 and the second air inlet 6 respectively. Then, it is drawn into the fan through the air outlet 4 to perform the next double circulation. The double-circulation air duct is formed on both sides of the electrical box 1, which enhances the airflow between the upper box 2 and the lower box 3, avoids dead zones, and effectively cools the power board 13 in the lower box 3. In this embodiment, the air outlet 4 is located between the first air inlet 5 and the second air inlet 6. Of course, the air outlet 4 can also be set to be biased towards the first air inlet 5 or the second air inlet 6, as long as the air outlet 4 is located between the first air inlet 5 and the second air inlet 6.

[0051] like Figure 2 , Figure 4 As shown, a heat dissipation component is installed on the upper box 2. Figure 2 and Figure 4 Heat dissipation components are provided between the first air inlet 5 and the first air outlet 8, and between the second air inlet 6 and the second air outlet 9. In other embodiments, the heat dissipation components can be located between the first air inlet 5 and the first air outlet 8, or between the second air inlet 6 and the second air outlet 9. The hot airflow in the lower box 3, under the action of the dual-outlet fan, enters the upper box 2 through the first outlet 8 and the second outlet 9 respectively. After being further cooled by the heat dissipation components, it enters the lower box 3 from both ends through the first inlet and the second inlet respectively, and is then drawn into the dual-outlet fan 7 from the air outlet 4 for the next double cycle, improving the heat dissipation effect on the power board 13. At the same time, the heat dissipation components transfer heat to the upper box 2, and the upper box 2 undergoes natural convection heat dissipation with the atmosphere.

[0052] Figure 4 In this embodiment, the heat dissipation component consists of 10 sets of heat dissipation fins, each set comprising multiple heat dissipation fins 10, with heat dissipation channels formed between adjacent fins 10. The arrangement of multiple heat dissipation fins 10, with airflow channels formed between adjacent fins 10, improves the heat exchange efficiency between hot air and the heat dissipation fins 10, reducing the temperature of the airflow entering the lower housing 3. Alternatively, in other embodiments, the heat dissipation component can be a water-cooled plate.

[0053] Figure 2 , Figure 3In the lower housing 3, a first guide plate 11 extending downwards is provided at the bottom of the upper housing 2, between the air outlet 4 and the first air inlet 5. A second guide plate 12 extending downwards is also provided on one side of the housing, on the same side. This arrangement ensures that the first guide plate 11 is downstream of the first air inlet 5 and the second guide plate 12 is upstream of the second air inlet 6 within the lower housing 3. This allows the airflow entering the lower housing 3 from the first air inlet 5 and the second air inlet 6 to be guided downwards, adjusting the airflow direction and path. This allows more airflow to pass over the electrical components on the power board 13, improving the cooling effect on the electrical components.

[0054] Figure 2 As shown in example 3, the area of ​​the first air inlet 5 is smaller than the area of ​​the second air inlet 6, and the lower part of the second air inlet 6 corresponds to the high-voltage side of the power board 13. Of course, in other embodiments, the area of ​​the first air inlet 5 can also be larger than the area of ​​the second air inlet 6, with the lower part of the first air inlet 5 corresponding to the high-voltage side of the power board 13. By designing the first air inlet 5 and the second air inlet 6 with different areas, different airflow rates can be reasonably allocated according to the arrangement of electrical components. For example, a larger air inlet area can be set on the high-voltage side to allow more air to enter the high-voltage side, avoiding the phenomenon that some electrical components are very cold while others are hot, thus ensuring that the overall cooling meets the requirements.

[0055] The upper box 2 and lower box 3 are metal boxes, preferably iron or aluminum boxes. Metal has good structural strength and thermal conductivity, allowing the electrical box 1 to not only provide support and protection, but also to transfer heat to the upper box 2 and lower box 3 in a timely manner when hot air comes into contact with them, and to achieve natural convection cooling with the ambient atmosphere, further reducing heat dissipation. A sealing strip 14 is provided at the joint between the upper box 2 and lower box 3, achieving a four-way seal between the upper box 2 and lower box 3, preventing air leakage between the inside of the electrical box 1 and the outside.

[0056] The heat dissipation process of the high-efficiency heat dissipation electrical box 1 provided by this utility model is as follows: The dual-outlet fan 7 in the upper box 2 is started, and the hot air in the lower box 3 is circulated into the first circulation air duct and the second circulation air duct respectively. In the first circulation air duct, the air in the upper box 2 passes through the air outlet 4, the first outlet 8 and the heat dissipation component in sequence. After being cooled by the heat dissipation component, it enters the lower box 3 through the first air inlet 5. In the lower box 3, under the guidance of the first guide plate 11, it flows from the first air inlet 5 to the air outlet 4. In the second circulation air duct, the air in the upper box 2 passes through the air outlet 4, the second outlet 9 and the heat dissipation component in sequence. After being cooled by the heat dissipation component, it enters the lower box 3 through the second air inlet 6. In the lower box 3, under the guidance of the second guide plate 12, it flows from the second air inlet 6 to the air outlet 4. This cycle repeats, which enhances the air flow between the upper box 2 and the lower box 3, avoids dead zones, and provides uniform and effective cooling for the power board 13 in the lower box 3.

[0057] This utility model also provides a range hood, which includes the aforementioned high-efficiency heat dissipation electrical box.

[0058] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A high efficiency heat dissipating electrical enclosure characterized by, It includes a box body, which comprises an upper box body and a lower box body. The upper box body covers the lower box body, and a power board is installed inside the lower box body. The bottom of the upper box body is provided with an air outlet, a first air inlet, and a second air inlet that connect to the lower box body. The first air inlet and the second air inlet are respectively located at the two ends of the bottom of the upper box body. The air outlet is located between the first air inlet and the second air inlet. A dual-outlet fan is also provided above the upper box body corresponding to the air outlet. Under the action of the dual-outlet fan, a dual-circulation air duct is formed between the upper box body and the lower box body.

2. The high efficiency heat dissipating electrical enclosure of claim 1, wherein, The dual-outlet fan includes a first outlet and a second outlet arranged opposite to each other. The dual-circulation air duct includes a first circulation air duct and a second circulation air duct. The first circulation air duct is connected in sequence to the air outlet, the first outlet, and the first air inlet in the upper box, and extends from the first air inlet to the air outlet in the lower box. The second circulation air duct is connected in sequence to the air outlet, the second outlet, and the second air inlet in the upper box, and extends from the second air inlet to the air outlet in the lower box.

3. The high efficiency heat dissipating electrical enclosure of claim 2, wherein, A heat dissipation component is provided on the upper box body, and the heat dissipation component is located between the first air inlet and the first outlet; and / or, the heat dissipation component is located between the second air inlet and the second outlet.

4. The high efficiency heat dissipating electrical enclosure of claim 3, wherein, The heat dissipation component is a heat dissipation fin group, which includes multiple heat dissipation fins, and heat dissipation channels are formed between adjacent heat dissipation fins.

5. The high efficiency heat dissipating electrical enclosure of claim 1 or 4, wherein, At the bottom of the upper box, a first guide plate extending towards the lower box is provided between the air outlet and the first air inlet, and a first guide plate extending towards the lower box is provided between the air outlet and the second air inlet. A first guide plate and a second guide plate extending towards the lower box are provided on one side of the box.

6. The high efficiency heat dissipating electrical enclosure of claim 5, wherein, The area of ​​the first air inlet is smaller than the area of ​​the second air inlet, and the lower part of the second air inlet corresponds to the high-voltage side of the power board; or the area of ​​the first air inlet is larger than the area of ​​the second air inlet, and the lower part of the first air inlet corresponds to the high-voltage side of the power board.

7. The high efficiency heat dissipating electrical enclosure of claim 6, wherein, The upper box and the lower box are metal boxes; Alternatively, the upper box and the lower box may be made of iron or aluminum.

8. The high efficiency heat dissipating electrical enclosure of claim 7, wherein, A sealing strip is provided at the joint between the upper box and the lower box.

9. The high efficiency heat dissipating electrical enclosure of claim 8, wherein, The outer wall of the upper box is provided with a first connector, and the outer periphery of the lower box is provided with a second connector that cooperates with the first connector. The first connector and the second connector are engaged with each other.

10. A range hood characterized by It includes a high-efficiency heat dissipation electrical box as described in any one of claims 1-9.

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