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 including the same, the electric appliance box comprises an inner box body and an outer box body, the inner box body comprises an inner top plate, a first side wall, a second side wall and an inner bottom plate, an inner layer space is formed in the inner box body, the inner box body is sleeved in the outer box body, the second side wall abuts against the outer box body, and the inner bottom plate is arranged in the inner box body. An outer layer space is formed among the first side wall, the top plate and the outer box body, a power panel is placed in the inner layer space, a fan is arranged in the outer layer space, and the fan and the power panel are separated to avoid damage to electrical components on the power panel due to accidental falling; an air inlet is formed in the first side wall opposite to the outlet of the fan, an outer airflow channel is formed between the air outlet and the air inlet in the outer space, an inner airflow channel is formed between the air inlet and the air outlet in the inner space, and the outer airflow channel and the inner airflow channel form a circulating air channel in the electric appliance box, so that air flow of the electric appliance box is enhanced; and the power panel is effectively cooled.

Description

TECHNICAL FIELD

[0001] The utility model relates to a range hood technical field, especially a kind of high-efficiency heat dissipation electric appliance box and range hood comprising it. BACKGROUND

[0002] The electric appliance box is arranged in the range hood to centrally install and protect the controller, power cord and other electric components, and the electric components are arranged on the power board, and the power board is arranged in the electric appliance box.In order to prevent the influence of oil smoke particles on the electric components, the electric appliance box is usually arranged in a closed state, and as the air volume of the range hood becomes larger and larger, the power required by the range hood increases significantly, the temperature of the electric components increases, and if the internal heat cannot be dissipated in time, it will exceed the standard limit, which not only affects the safe operation, but also has safety hazards.In the prior art, a fan is arranged in the electric appliance box to forcibly disturb the internal air to cool the electric components, but there are the following shortcomings: (1) the electric appliance box is closed, and the airflow blown by the fan is quickly sucked back by the fan inlet, forming a "short circuit" effect, so that the air turbulence is only in a small range around the fan, and the air is still difficult to flow away from the fan, so that the temperature of the power board far away from the fan is still high, and the effective and uniform cooling effect cannot be achieved; (2) if a hole is opened in a suitable position of the electric appliance box, the internal fan can effectively blow air, and the cooling effect of the power board components is obviously improved, but oil smoke particles are easy to enter the electric appliance box, which greatly reduces the service life of the components; (3) the fan is arranged around the power board, and after the fan is loosened due to environmental reasons, the sharp blades are easy to scratch the surrounding components during rotation, causing the range hood to malfunction.Therefore, it is necessary to provide a high-efficiency heat dissipation electric appliance box and a range hood comprising the same. SUMMARY

[0003] The utility model solves the technical problems to overcome the defects that the electric components in the electric appliance box cannot be effectively cooled and cannot be stably and long-term used due to the influence of oil smoke particles, and provides a high-efficiency heat dissipation electric appliance box and a range hood comprising the same.

[0004] The utility model solves the above technical problems by the following technical solutions:

[0005] The utility model provides a kind of efficient heat dissipation electric appliance box, it includes inner box body and outer box body, the inner box body includes inner top plate, a pair of oppositely arranged first side wall, a pair of oppositely arranged second side wall and inner bottom plate, the inside of the inner box body forms inner space, the inner box body is sleeved in outer box body, the second side wall is butted on the outer box body, first side wall, top plate and the outer box body form outer space, power panel is placed in inner space, fan is provided in outer space, the position where the inner top plate is set with air outlet corresponding the fan, the first side wall opposite the outlet of the fan is provided with air inlet, the fan outlet to the air inlet between in outer space forms outer airflow channel, the air inlet to the air outlet between in inner space forms inner airflow channel, and outer airflow channel and inner airflow channel form circulating air duct in the electric appliance box.

[0006] In the scheme, by the setting of inner box body and outer box body, inner space and outer space are formed in the electric appliance box, power panel is placed in inner space, fan is placed in outer space, fan is separated from power panel, to avoid accidental drop causing damage to electric appliance element on power panel, air outlet is provided on inner top plate corresponding the position where fan is located, air inlet is provided on the first side wall opposite the outlet of fan, to realize the communication of inner space and outer space through air outlet and air inlet, under the driving of fan, outer airflow channel is formed between the fan outlet to the air inlet in outer space, inner airflow channel is formed between the air inlet to the air outlet in inner space, and outer airflow channel and inner airflow channel form circulating air duct in the electric appliance box, to enhance the air flow of electric appliance box, and effectively cool power panel in inner box body.

[0007] Preferably, the fan is provided on the inner top plate, and is arranged towards one of the first side walls, and the outlet of the fan is arranged towards the other first side wall.

[0008] In the scheme, air inlet and air outlet are arranged at two ends of inner box body, so that the distance between air inlet and air outlet is far, thereby prolonging the path of outer airflow channel and inner airflow channel, so that inner airflow channel can cover power panel as much as possible, to increase the contact area of convective heat exchange with power panel, and improve the cooling effect on power panel.

[0009] Preferably, a heat dissipation assembly is arranged on the outer box body, and the heat dissipation assembly is located on the outer airflow channel.

[0010] In the scheme, heat dissipation assembly is arranged on outer box body, and heat dissipation assembly is located on outer airflow channel, so that hot air absorbed from inner space is further cooled by heat dissipation assembly before being sent to inner space for circulation, to improve the heat dissipation effect on power panel, and heat dissipation assembly transmits heat to outer box body, and outer box body performs natural convection heat dissipation with atmosphere.

[0011] Preferably, the heat dissipation assembly is a plurality of heat dissipation fins, and a heat dissipation flow channel is formed between adjacent heat dissipation fins for air flow to pass through.

[0012] In this scheme, a plurality of heat dissipation fins are used, and a heat dissipation flow channel is formed between adjacent heat dissipation fins for air flow to pass through, which can improve the heat exchange efficiency of hot air and the heat dissipation fins, and the air flow is cooled by the heat dissipation fins before entering the inner box body.

[0013] Preferably, the air inlet is located at the lower part of the first side wall.

[0014] In this scheme, the air inlet is arranged at the lower part of the first side wall, so that the position of the air inlet is lower than that of the air outlet, and the air enters the inner space from the lower part of the first side wall, bypasses the power board, and crosses the power board from bottom to top, thereby ensuring the orderly and large-scale flow of air in the interior and avoiding flow dead zones.

[0015] Preferably, the air inlet includes a plurality of air inlet holes, and the plurality of air inlet holes are arranged horizontally and spaced apart.

[0016] In this scheme, the air enters the inner space through the plurality of air inlet holes, so that the distribution of the air entering the inner space is more uniform.

[0017] Preferably, the air inlet includes a plurality of air inlet holes, and the plurality of air inlet holes are arranged in multiple rows, and the air inlet holes in each row are arranged spaced apart.

[0018] In this scheme, the plurality of air inlet holes are arranged in multiple rows, and the air inlet holes in each row are arranged spaced apart, so that the spatial distribution of the air entering the inner space is more uniform.

[0019] Preferably, the power board is arranged on the inner bottom plate, and the power board is arranged with electrical components, and the strong electrical components among the electrical components are arranged close to the air inlet.

[0020] In this scheme, the air close to the air inlet has a lower temperature, and arranging the strong electrical components close to the air inlet can effectively reduce the heat dissipation effect of the strong electrical components and prevent the local temperature of the strong electrical components from being too high.

[0021] Preferably, the materials of the inner box body and the outer box body are iron or aluminum.

[0022] In this scheme, the materials of the inner box body and the outer box body are selected to be iron or aluminum, which has good structural strength and good heat conduction performance, can not only provide support and protection, but also can timely transfer heat to the inner box body or the outer box body when the hot air contacts the inner box body or the outer box body, and the outer box body can perform natural convection heat dissipation with the ambient atmosphere, thereby further reducing the heat dissipation effect.

[0023] This utility model provides a range hood that includes the high-efficiency heat dissipation electrical box as described above.

[0024] The positive and progressive effects of this utility model are as follows: By setting an inner box and an outer box, and forming an inner space and an outer space inside the electrical box, a power board is placed in the inner space, and a fan is set in the outer space, separating the fan from the power board to prevent damage to the electrical components on the power board due to accidental drops. An air outlet is set on the inner top plate corresponding to the location of the fan, and an air inlet is set on the first side wall opposite to the outlet of the fan. The inner space and the outer space are connected through the air outlet and the air inlet. Driven by the fan, an external airflow channel is formed between the fan outlet and the air inlet in the outer space, and an internal airflow channel is formed between the air inlet and the air outlet in the inner space. The external airflow channel and the internal airflow channel form a circulating air duct in the electrical box, enhancing the airflow of the electrical box and effectively cooling the power board in the inner box. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of an electrical box according to an embodiment of the present invention.

[0026] Figure 2 for Figure 1 A top view of the electrical box.

[0027] Figure 3 for Figure 2 A cross-sectional view along the AA direction.

[0028] Figure 4 for Figure 2 A cross-sectional view along the BB direction.

[0029] Figure 5 This is a schematic diagram of the outer box body according to an embodiment of the present utility model.

[0030] Figure 6 This is a schematic diagram of the inner box body according to an embodiment of the present utility model.

[0031] Explanation of reference numerals in the attached figures

[0032] Electrical Box 1

[0033] Inner box 2

[0034] Outer box 3

[0035] Inner top plate 4

[0036] First side wall 5

[0037] Second side wall 6

[0038] Inner floor 7

[0039] Inner space 8

[0040] Outer space 9

[0041] Power board 10

[0042] Fan 11

[0043] Air outlet 12

[0044] Air inlet 13

[0045] Heatsink 14 Detailed Implementation

[0046] The present invention will be described more clearly and completely below with reference to the accompanying drawings, using a preferred embodiment.

[0047] This utility model provides a high-efficiency heat dissipation electrical box 1, such as Figures 1-6 As shown, the electrical box 1 includes an inner box 2 and an outer box 3. The inner box 2 includes an inner top plate 4, a pair of opposing first side walls 5, a pair of opposing second side walls 6, and an inner bottom plate 7. The interior of the inner box 2 forms an inner space 8. The inner box 2 is fitted inside the outer box 3. The second side walls 6 abut against the outer box 3. The first side walls 5, the top plate, and the outer box 3 form an outer space 9. A power board 10 is placed in the inner space 8. A fan 11 is installed in the outer space 9. The fan 11 can be a centrifugal fan 11. An air outlet 12 is provided on the inner top plate 4 corresponding to the location of the fan 11. An air inlet 13 is provided on the first side wall 5 opposite to the outlet of the fan 11. An external airflow channel is formed between the outlet of the fan 11 and the air inlet 13 in the outer space 9. An internal airflow channel is formed between the air inlet 13 and the air outlet 12 in the inner space 8. The external airflow channel and the internal airflow channel form a circulating air duct D in the electrical box 1. The inner box 2 and outer box 3 form an inner space 8 and an outer space 9 within the electrical box 1. The power board 10 is placed in the inner space 8, and the fan 11 is placed in the outer space 9, separating the fan 11 from the power board 10 in two spaces to prevent damage to the electrical components on the power board 10 from accidental falls. An air outlet 12 is provided on the inner top plate 4 corresponding to the location of the fan 11, and an air inlet 13 is provided on the first side wall 5 opposite to the outlet of the fan 11. The inner space 8 and the outer space 9 are connected through the air outlet 12 and the air inlet 13. Driven by the fan 11, an external airflow channel is formed between the outlet of the fan 11 and the air inlet 13 in the outer space 9, and an internal airflow channel is formed between the air inlet 13 and the air outlet 12 in the inner space 8. The external airflow channel and the internal airflow channel form a circulating air duct D within the electrical box 1, enhancing the airflow of the electrical box 1 and effectively cooling the power board 10 in the inner box 2. The outer casing 3 is isolated from the atmospheric environment, thus isolating the electrical components inside the heat sink from the external environment to prevent them from being exposed to oil fumes.

[0048] likeFigure 3 As shown in the figure, the fan 11 is arranged on the inner top plate 4 and is arranged to be inclined to one of the first side walls 5, and the outlet of the fan 11 is arranged to face the other first side wall 5. The air inlet 13 and the air outlet 12 are arranged at two ends of the inner box body 2, so that the distance between the air inlet 13 and the air outlet 12 is far, thereby prolonging the path of the outer airflow channel and the inner airflow channel, so that the inner airflow channel can cover the power board 10 as much as possible, increasing the contact area of the power board 10 for convection heat exchange, and improving the cooling effect on the power board 10.

[0049] As shown in the figure, Figure 3 , Figure 5 As shown in the figure, the heat dissipation assembly is arranged on the outer box body 3 and is located on the outer airflow channel. The heat dissipation assembly is arranged on the outer box body 3 and is located on the outer airflow channel, so that the hot air sucked from the inner space 8 is further cooled by the heat dissipation assembly before being sent to the inner space 8 for circulation, thereby improving the heat dissipation effect on the power board 10, and the heat dissipation assembly transmits heat to the outer box body 3, and the outer box body 3 performs natural convection heat dissipation with the atmosphere.

[0050] Figure 5 The heat dissipation assembly is a plurality of heat dissipation fins 14, and a heat dissipation flow channel for airflow is formed between adjacent two heat dissipation fins 14. A plurality of heat dissipation fins 14 are arranged, and a heat dissipation flow channel for airflow is formed between adjacent two heat dissipation fins 14, which can improve the heat exchange efficiency of hot air and the heat dissipation fins 14. Of course, in other embodiments, the heat dissipation assembly can also be a water cooling plate.

[0051] As shown in the figure, Figure 6 The air inlet 13 is located at the lower part of the first side wall 5, so that the position of the air inlet 13 is lower than that of the air outlet 12, and the air enters the inner space 8 from the lower part of the first side wall 5, bypasses the power board 10, and crosses the power board 10 from bottom to top, thereby ensuring the orderly and large-scale flow of air in the interior and avoiding flow dead zones. In the figure, the air inlet 13 includes a plurality of air inlet holes, and a plurality of air inlet holes are arranged in two rows and are arranged at intervals between the air inlet holes in each row, so that the air entering the inner space 8 is more evenly distributed in space. Of course, in other embodiments, a plurality of air inlet holes are arranged in multiple rows, and a plurality of air inlet holes can also be arranged horizontally at intervals, i.e., arranged in a single row.

[0052] As shown in the figure, Figures 3-4 The power board 10 is arranged on the inner bottom plate 7, and the power board 10 is arranged with electrical elements, and the strong electrical elements in the electrical elements are arranged close to the air inlet 13. The air close to the air inlet 13 has a lower temperature, and arranging the strong electrical elements close to the air inlet 13 can effectively reduce the heat dissipation effect of the strong electrical elements and prevent the local temperature of the strong electrical elements from being too high.

[0053] The inner box body 2 and the outer box body 3 are metal boxes, preferably made of iron or aluminum, which have good structural strength and good heat conduction performance, can not only play a good supporting and protecting role, but also can timely transmit heat to the inner box body 2 or the outer box body 3 due to the good heat conduction performance of the iron or aluminum box, and the outer box body 3 can perform natural convection heat dissipation with ambient air, thereby further reducing the heat dissipation effect.

[0054] The high-efficiency heat dissipation electric appliance box 1 provided by the utility model has the following heat dissipation process: the fan 11 on the outer space 9 is started, hot air in the inner space 8 is sucked into the fan 11 through the air outlet 12, enters the outer space 9 through the air outlet 12 of the fan 11, and the temperature of the hot air is reduced after being cooled by the heat dissipation assembly and then returns to the inner space through the air inlet 13 at the lower part of the inner box body 2, so that an outer air flow channel is formed between the outlet of the fan 11 and the air inlet 13; in the inner space, the air slightly passes through the power board 10 in the process from the air inlet 13 to the air outlet 12, an inner air flow channel is formed between the air inlet 13 and the air outlet 12 in the inner space 8, the outer air flow channel and the inner air flow channel form a circulating air duct D in the electric appliance box 1, and the air in the electric appliance box 1 is circulated and flows, so that the power board 10 in the inner box body 2 is effectively cooled.

[0055] The utility model provides a kind of range hood, it includes as preceding high-efficiency heat dissipation electric appliance box 1.

[0056] Although the specific embodiments of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the 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 the utility model, and these changes and modifications all fall within the protection scope of the utility model.

Claims

1. A high efficiency heat dissipating electrical enclosure characterized by, The high-efficiency heat-dissipation electric appliance box comprises an inner box body and an outer box body, the inner box body comprises an inner top plate, a pair of oppositely arranged first side walls, a pair of oppositely arranged second side walls and an inner bottom plate, an inner space is formed in the inner box body, the inner box body is sleeved in the outer box body, the second side walls abut on the outer box body, the first side walls and the inner top plate form an outer space with the outer box body, a power supply board is arranged in the inner space, a fan is arranged in the outer space, an air outlet is arranged on the inner top plate corresponding to the position of the fan, an air inlet is arranged on the first side wall opposite to the outlet of the fan, an outer airflow channel is formed between the air outlet and the air inlet in the outer space, an inner airflow channel is formed between the air inlet and the air outlet in the inner space, and the outer airflow channel and the inner airflow channel form a circulating air duct in the electric appliance box.

2. The high efficiency heat dissipating electrical enclosure of claim 1, wherein, The fan is arranged on the inner top plate and is arranged to be inclined to one of the first side walls, and the outlet of the fan is arranged to face the other first side wall.

3. The high efficiency heat dissipating electrical enclosure of claim 2, wherein, The outer box body is provided with a heat dissipation assembly, and the heat dissipation assembly is located on the outer airflow channel.

4. The high efficiency heat dissipating electrical enclosure of claim 3, wherein, The heat dissipation assembly is a plurality of heat dissipation fins, and an airflow passage is formed between adjacent two heat dissipation fins.

5. The high efficiency heat dissipating electrical enclosure of claim 2, wherein, The air inlet is located at the lower part of the first side wall.

6. The high efficiency heat dissipating electrical enclosure of claim 5, wherein, The air inlet comprises a plurality of air inlet holes, and the air inlet holes are arranged horizontally and at intervals.

7. The high efficiency heat dissipating electrical enclosure of claim 5, wherein, The air inlet comprises a plurality of air inlet holes, and the air inlet holes are arranged in multiple rows, and the air inlet holes in each row are arranged at intervals.

8. The high efficiency heat dissipating electrical enclosure of claim 5, wherein, The power supply board is arranged on the inner bottom plate, and the power supply board is provided with electric appliance elements, and the strong electric appliance elements in the electric appliance elements are arranged close to the air inlet.

9. The high efficiency heat dissipating electrical enclosure of any one of claims 1-8, wherein, The materials of the inner box body and the outer box body are iron or aluminum.

10. A range hood characterized by The high-efficiency heat-dissipation electric appliance box comprises an inner box body and an outer box body, the inner box body comprises an inner top plate, a pair of oppositely arranged first side walls, a pair of oppositely arranged second side walls and an inner bottom plate, an inner space is formed in the inner box body, the inner box body is sleeved in the outer box body, the second side walls abut on the outer box body, the first side walls and the inner top plate form an outer space with the outer box body, a power supply board is arranged in the inner space, a fan is arranged in the outer space, an air outlet is arranged on the inner top plate corresponding to the position of the fan, an air inlet is arranged on the first side wall opposite to the outlet of the fan, an outer airflow channel is formed between the air outlet and the air inlet in the outer space, an inner airflow channel is formed between the air inlet and the air outlet in the inner space, and the outer airflow channel and the inner airflow channel form a circulating air duct in the electric appliance box.

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