Separated range hood with relay fan capable of cooling circuit board

Abstract

The invention discloses a separated range hood with a relay fan capable of cooling a circuit board. The separated range hood comprises a range hood main body, an air pipe and the relay fan, the range hood body comprises a machine shell and a smoke collecting box body, and the smoke collecting box body is provided with an air outlet. And the relay fan is positioned outside the range hood main body. The relay fan comprises an air exhaust motor, a heat dissipation seat and a circuit board. The air exhaust motor comprises an outer shell and a motor main body. The outer shell is provided with a first opening and a second opening which are opposite. One end of the air pipe communicates with the air outlet, and the other end communicates with the first opening. The motor body is arranged in the outer shell. One end of the motor main body is provided with a discharge port corresponding to the second opening. The heat dissipation base is arranged on an outer shell of the air exhaust motor, and the circuit board supplies power to the air exhaust motor and is arranged on the heat dissipation base so that the heat dissipation base can be cooled through air exhaust airflow generated when the air exhaust motor operates, and therefore the circuit board can be cooled. Therefore, the use convenience and the use safety are improved.

Description

Technical Field

[0001] The invention relates to a separate type range hood, in particular to a separate type range hood with a relay fan capable of cooling a circuit board. Background Art

[0002] The separate range hood is a range hood that uses a separate design for the range hood body and the motor (or relay motor / relay fan). Therefore, the relay fan can be set outside the kitchen to reduce the disturbing noise generated by the motor when cooking. The range hood body and the relay fan need to be connected by an air duct to exhaust the fumes outdoors. In order to control the relay fan and provide power, the range hood body is usually equipped with a control box, one end of which is electrically connected to the mains power and the other end is electrically connected to the relay fan by an extension cord to control the relay fan and provide power. However, as the power consumption of the relay fan increases, the heat generated by the high-power electronic components installed on the circuit board in the control box is also increasing. A common way is to set a heat dissipation device in the control box to dissipate the high heat generated by the high-power electronic components. In order to enhance the heat dissipation capacity of the heat dissipation device, a heat dissipation fan is usually easily thought of. However, the heat dissipation fan not only requires additional power, but also is prone to failure in high temperature environments and often needs to be repaired, causing a problem that has long plagued the industry and users. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a separate range hood with a relay fan capable of cooling a circuit board in view of the deficiencies in the prior art.

[0004] An embodiment of the present invention discloses a separate type range hood with a relay fan capable of cooling a circuit board, comprising: a range hood main body, the range hood main body comprising a casing and a smoke collecting box, the casing having an air inlet, the smoke collecting box being arranged on the casing, the smoke collecting box covering the air inlet, the smoke collecting box having an air outlet, the air outlet of the smoke collecting box being connected to the air inlet of the casing; an air duct; and a relay fan, the relay fan being located outside the range hood main body, the relay fan comprising: an exhaust motor, the exhaust motor comprising an outer casing and a motor The motor body comprises a main body, the outer shell having a first opening and a second opening opposite to each other, one end of the air duct is connected to the air outlet, and the other end of the air duct is connected to the first opening, the motor body is arranged in the outer shell, and one end of the motor body has an exhaust port corresponding to the second opening; a heat sink, the heat sink is arranged on the outer shell of the exhaust motor; and a circuit board, the circuit board can be used to supply power to the motor body of the exhaust motor, the circuit board is arranged on the heat sink, so as to cool the heat sink and the circuit board through the exhaust airflow when the exhaust motor is running.

[0005] Preferably, the range hood main body further comprises a smoke collecting plate with an adjustable tilt angle, and the smoke collecting plate is rotatably connected to one side of the bottom of the casing.

[0006] Preferably, the outer shell of the exhaust motor is provided with a third opening corresponding to the heat sink, and the heat sink is sunk into the outer shell through the third opening.

[0007] Preferably, the relay fan further comprises an outer cover, which covers the periphery of the circuit board and forms at least one drainage hole.

[0008] Preferably, the heat sink is a metal heat sink in the shape of a rectangular hollow column, which is partially sunken into the outer shell. The heat sink has a heat sink wall and two side openings, the two side openings are located on both sides of the heat sink wall, and the heat sink wall is provided with a plurality of heat dissipation holes connected to the two side openings, and the two side openings are connected to the internal space of the outer cover and at least one of the drainage holes.

[0009] Preferably, the outer cover body has two opposite side cover plates, and each of the two side cover plates is formed with one drainage hole.

[0010] Preferably, one end of the air duct is connected to the air outlet of the smoke collecting box through a first pipe sleeve, and the other end of the air duct is connected to the first opening of the outer shell through a second pipe sleeve.

[0011] Preferably, the relay fan further includes a relay transceiver, which is electrically connected to the circuit board and is used to amplify and transmit the relay fan start-up signal emitted when the range hood main body is started.

[0012] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, such description and drawings are only used to illustrate the present invention and are not intended to limit the protection scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional exploded schematic diagram of the separate type range hood of the present invention.

[0014] Figure 2 It is another exploded perspective view of the separate type range hood of the present invention.

[0015] Figure 3 It is a three-dimensional exploded schematic diagram of the relay fan of the present invention.

[0016] Figure 4 It is a three-dimensional partial assembly diagram of the relay fan of the present invention.

[0017] Figure 5 It is a three-dimensional assembly schematic diagram of the relay fan of the present invention.

[0018] Figure 6 It is a cross-sectional schematic diagram of the relay fan of the present invention.

[0019] Figure 7 The figure is a schematic diagram of a usage state of the present invention. DETAILED DESCRIPTION

[0020] The following is an explanation of the implementation method of the "separate range hood with a relay fan capable of cooling a circuit board" disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, the drawings of the present invention are only simple schematic illustrations and are not depicted in actual size. It is stated in advance. The following embodiments will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0021] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.

[0022] [Example]

[0023] See also Figures 1 to 6 The present invention provides a separate range hood with a relay fan capable of cooling a circuit board (hereinafter referred to as a separate range hood), comprising a range hood body 900, an air duct 800, and a relay fan 100. The relay fan 100 is located outside the range hood body 900, and the range hood body 900 is connected to the relay fan 100 through the air duct 800 to discharge the oil smoke to the outside.

[0024] like Figure 1 , 2As shown, the range hood body 900 includes a housing 901 and a smoke collecting box 902. In this embodiment, the housing 901 is generally a long shell, and the housing 901 has an air inlet 9011. The air inlet 9011 is the air inlet for the oil smoke to enter, and can be provided with an oil smoke filter or a guide plate as needed. The air inlet 9011 of this embodiment is square, but the shape of the air inlet 9011 is not limited. The smoke collecting box 902 is arranged on the housing 901, and the smoke collecting box 902 covers the air inlet 9011. The smoke collecting box 902 has an air outlet 9021, and the air outlet 9021 of the smoke collecting box 902 is connected to the air inlet 9011 of the housing 901.

[0025] In addition, in order to extend the smoke collection area and make the oil smoke more concentrated, the range hood body 900 of this embodiment also includes a smoke collecting plate 903 with an adjustable tilt angle. The smoke collecting plate 903 can be rotatably connected to one side of the bottom of the casing 901. When in use, the smoke collecting plate 903 can be flipped in the direction away from the air inlet 9011 to extend the smoke collection area. It can also be flipped in the direction of the air inlet 9011 when not in use to cover the bottom of the casing 901 and the air inlet 9011, which can increase the aesthetics.

[0026] like Figures 3 to 6 As shown, the relay fan 100 basically includes an exhaust motor 10, a heat sink 20, and a circuit board 30. The exhaust motor 10 includes an outer shell 11 and a motor body 12. The outer shell 11 can be a metal hollow body, and the outer shell 11 has a first opening 111 and a second opening 112, and the first opening 111 and the second opening 112 can be opened on opposite sides of the outer shell 11. The motor body 12 is disposed in the outer shell 11, and one end of the motor body 12 has an exhaust port 121, and the exhaust port 121 corresponds to the second opening 112. The exhaust port 121 of the motor body 12 can also extend out of the outer shell 11 through the second opening 112, so that the oil smoke extracted by the exhaust motor 10 can be discharged to the outside.

[0027] One end of the aforementioned air duct 800 is as follows Figure 1 As shown, it is connected to the air outlet 9021 of the smoke collecting box 902, and the other end is as shown in FIG. Figure 3 As shown, it is connected to the first opening 111 of the outer shell 11. One end of the air duct 800 can be connected to the air outlet 9021 of the smoke collecting box 902 through the first pipe sleeve 801, and the other end can be connected to the first opening 111 of the outer shell 11 through the second pipe sleeve 802. Since the first pipe sleeve 801 and the second pipe sleeve 802 can be commercially available, and the present invention does not limit the structure of the pipe sleeve, the pipe sleeve will not be described in detail.

[0028] The circuit board 30 is electrically connected to the motor body 12 of the exhaust motor 10, and can be used to provide power and control the start and stop and speed of the motor body 12 of the exhaust motor 10, and a high-power electronic component, such as a power transistor, is disposed on the circuit board 30, and the power transistor can be a single power device, such as a MOSFET or an IGBT, and the high-power electronic component can also be a power module. The circuit board 30 is disposed on the heat sink 20, and the heat sink 20 can be directly disposed on the outer shell 11 of the exhaust motor 10, and form thermal contact conduction with the outer shell 11, so as to cool the heat sink 20 through the exhaust airflow A1 generated in the outer shell 11 when the exhaust motor 10 is running. In the present embodiment, the outer shell 11 may further be provided with a third opening 113, the shape or size of which corresponds to the heat sink 20, and the heat sink 20 may also be sunk into the outer shell 11 through the third opening 113, and may be partially or completely sunk into the outer shell 11. When the speed of the exhaust motor 10 is higher and the power consumption is higher, making the circuit board 30 hotter, the heat sink 20 can be directly cooled by the larger exhaust airflow A1 in the outer shell 11, thereby effectively cooling the circuit board 30.

[0029] Furthermore, in order to better assist in cooling the circuit board 30, the present embodiment may also be provided with an outer cover body 40, which covers the periphery of the circuit board 30, and the outer cover body 40 generates at least one drainage hole 401. When the speed of the exhaust motor 10 is higher and the power consumption is higher, making the circuit board 30 hotter, in addition to being able to cool the heat sink 20 by the larger exhaust airflow A1 in the outer shell 11, the external airflow A2 can also be driven to pass through the drainage holes 401 of the outer cover body 40, the circuit board 30 and the heat sink 20, and merge with the exhaust airflow A1, thereby more effectively cooling the circuit board 30.

[0030] Furthermore, the heat sink 20 can be a plate-shaped metal heat sink or an aluminum extruded heat sink, and can be optionally a rectangular hollow column-shaped metal heat sink with two side walls and two side openings 201, one of the side walls being a heat sink 21, the two side openings 201 being located on both sides of the heat sink 21, and the heat sink 21 also generates a plurality of heat dissipation holes 210 connected to the two side openings 201, and the two side openings 201 are connected to the internal space of the outer cover 40 and at least one drainage hole 401, so that the external airflow A2 flowing in from the drainage hole 401 can flow into the heat sink 20 through the side opening 201, and flow into the internal space of the outer shell 11 through the plurality of heat dissipation holes 210, and merge with the exhaust airflow A1. Furthermore, since the heat sink 20 is partially sunken into the outer shell 11, the exhaust air flow A1 generated in the outer shell 11 when the exhaust motor 10 is running can also flow through the heat sink 20 through the side opening 201, so that the heat sink 20 can be cooled by the external air flow A2 and the exhaust air flow A1 flowing through the heat sink 20 at the same time, thereby more effectively cooling the circuit board 30.

[0031] Furthermore, the outer cover body 40 can be made of a metal plate or a plastic plate, and is in a hollow box shape, and has two opposite side cover plates 41, and each side cover plate 41 is formed with a drainage hole 401, so that the external airflow A2 can flow in through the two opposite drainage holes 401 of the outer cover body 40. In addition, the outer cover body 40 is completely and tightly joined to the edge of the third opening 113 around its periphery, that is, the length and width of the outer cover body 40 is greater than or equal to the length and width of the third opening 113.

[0032] Please also refer to Figure 7 In this embodiment, the relay fan 100 and the range hood main body 900 can be linked wirelessly, that is, when the range hood main body 900 is started, a relay fan start signal will be sent wirelessly to the circuit board 30 of the relay fan 100 to start the exhaust motor 10 of the relay fan 100 synchronously. However, with the increasing popularity of island kitchens or open kitchens, the kitchen is getting closer and closer to the center of the family, so that the length of the air duct 800 to the balcony or the outdoors is getting longer and longer, which affects the exhaust efficiency. For this reason, not only one relay fan 100 is needed, but even two or three or more are needed. When the range hood main body 900 is started, the relay fan start signal sent wirelessly is often blocked by the steel structure of the house and the layers of walls, and then the signal is weakened. Usually, it can only be transmitted to the nearest relay fan 100, so that other relay fans 100 at a farther distance cannot be started synchronously because they do not receive the start signal. Therefore, in this embodiment, the nearest relay fan 100 may also include a relay transceiver 50, which is electrically connected to the circuit board 30 and may be disposed at an appropriate position of the outer shell 11 or integrated with the circuit board 30, whereby the relay fan start signal sent by the range hood main body 900 when it is started is received by the relay transceiver 50, the signal is amplified and transmitted, so that the amplified signal can be transmitted farther, so that other relay fans 100 at a farther distance can wirelessly receive the relay fan start signal and can be started synchronously. In addition, the relay transceivers 50 of each relay fan 100 may be connected in series one by one to transmit, so that the signal can be transmitted farther.

[0033] In summary, the separate type range hood with a relay fan capable of cooling a circuit board provided by the present invention comprises a range hood body 900, an air duct 800, and a relay fan 100. The range hood body 900 comprises a housing 901 and a smoke collecting box 902, the housing 901 having an air inlet 9011, the smoke collecting box 902 being disposed on the housing 901 and covering the air inlet 9011, the smoke collecting box 902 having an air outlet 9021, and the air outlet 9021 of the smoke collecting box 902 being connected to the air inlet 9011 of the housing 901. The relay fan 100 is located outside the range hood body 900. The relay fan 100 comprises an exhaust motor 10, a heat sink 20, and a circuit board 30. The exhaust motor 10 comprises an outer housing 11 and a motor body 12. The outer shell 11 has a first opening 111 and a second opening 112 opposite to each other. One end of the air duct 800 is connected to the air outlet 9021, and the other end is connected to the first opening 111. The motor body 12 is disposed in the outer shell 11. One end of the motor body 12 has an exhaust port 121 corresponding to the second opening 112. The heat sink 20 is disposed on the outer shell 11 of the exhaust motor 10. The circuit board 30 can be used to supply power to the exhaust motor 10 and is disposed on the heat sink 20 to cool the heat sink 20 and thus cool the circuit board 30 by the exhaust air flow when the exhaust motor 10 is running. Thereby, the convenience and safety of use are greatly improved, thereby solving a problem that has long plagued industry practitioners and users.

[0034] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention's specification and drawings are included in the patent scope of the present invention.

Claims

1. A separate range hood having a relay fan capable of cooling a circuit board, characterized in that: include: A range hood main body, the range hood main body comprises a casing and a smoke collecting box, the casing has an air inlet, the smoke collecting box is arranged on the casing, the smoke collecting box covers the air inlet, the smoke collecting box has an air outlet, and the air outlet of the smoke collecting box is connected to the air inlet of the casing; an air duct; and A relay fan, which is located outside the range hood body and includes: An air extraction motor, the air extraction motor comprising an outer shell and a motor body, the outer shell having a first opening and a second opening opposite to each other, one end of the air duct being connected to the air outlet, the other end of the air duct being connected to the first opening, the motor body being disposed in the outer shell, one end of the motor body having an outlet corresponding to the second opening; A heat sink, which is disposed on the outer shell of the exhaust motor; and A circuit board can be used to supply power to the motor body of the exhaust motor. The circuit board is arranged on the heat sink so that the exhaust airflow when the exhaust motor is running can cool the heat sink and thus cool the circuit board.

2. The separate range hood with a relay fan capable of cooling a circuit board according to claim 1, characterized in that: The range hood main body also comprises a smoke collecting plate with an adjustable tilt angle, and the smoke collecting plate is rotatably connected to one side of the bottom of the housing.

3. The separate range hood with a relay fan capable of cooling a circuit board according to claim 1, characterized in that: The outer shell of the exhaust motor is provided with a third opening corresponding to the heat sink, and the heat sink is sunk into the outer shell through the third opening.

4. The separate range hood with a relay fan capable of cooling a circuit board according to claim 3, characterized in that: The relay fan further comprises an outer cover body, which covers the periphery of the circuit board and forms at least one drainage hole.

5. The separate type range hood with a relay fan capable of cooling a circuit board according to claim 4, characterized in that: The heat sink is a metal heat sink in the shape of a rectangular hollow column. The heat sink is partially sunken into the outer shell. The heat sink has a heat sink wall and two side openings. The two side openings are located on both sides of the heat sink wall. The heat sink wall is provided with a plurality of heat dissipation holes connected to the two side openings. The two side openings are connected to the internal space of the outer cover and at least one of the drainage holes.

6. The separate type range hood with a relay fan capable of cooling a circuit board according to claim 5, characterized in that: The outer cover body has two opposite side cover plates, and each of the two side cover plates has a drainage hole.

7. The separate range hood with a relay fan capable of cooling a circuit board according to claim 1, characterized in that: One end of the air duct is connected to the air outlet of the smoke collecting box through a first pipe sleeve, and the other end of the air duct is connected to the first opening of the outer shell through a second pipe sleeve.

8. The separate range hood with a relay fan capable of cooling a circuit board according to claim 1, characterized in that: The relay fan further comprises a relay transceiver, which is electrically connected to the circuit board and is used to amplify and transmit the relay fan start-up signal sent when the range hood main body is started.

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