Range hood

Abstract

This invention relates to the field of kitchen appliance technology, and discloses a range hood. The range hood includes a smoke collection hood, a blower box, and an auxiliary fan. The smoke outlet of the smoke collection hood is connected to the smoke inlet of the blower box. A smoke inlet is provided on the front side of the blower box. The bottom front surface of the smoke collection hood has a downward-facing air curtain outlet. An air guide structure is provided inside the smoke collection hood. The auxiliary fan has a first installation state installed on the smoke collection hood and a second installation state installed on the smoke inlet via an external connector. In the first installation state, the auxiliary fan can deliver air to the air curtain outlet through the air guide structure to form an air curtain on the front side of the smoke collection hood. In the second installation state, the auxiliary fan can guide fumes generated by cooking appliances other than the stove into the blower box for exhaust via the external connector. By setting up an auxiliary fan, both the adsorption of fumes generated by the stove and the adsorption of fumes generated by other cooking appliances near the range hood can be enhanced, reducing costs.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliances technology, and more particularly to a range hood. Background Technology

[0002] Range hoods are common kitchen appliances, usually mounted above the stove. However, as cooking methods have become more diverse, cooking appliances are no longer limited to the stovetop. Sometimes, induction cookers or electric grills are used next to the stove, or even in the dining area outside the kitchen. Because induction cookers or electric grills are relatively far from the range hood, the fumes produced by them drift into the room. Furthermore, some fumes from the stovetop also rise and cannot be captured by the range hood. As a result, some of these drifting fumes cannot be expelled in time and are inhaled, harming health.

[0003] In existing technologies, to improve the kitchen environment and reduce the harm of cooking fumes to health, the common methods include increasing the suction power of the range hood; or installing an additional fan inside the fume hood to form an air curtain in front of the air inlet of the fume hood. When the cooking fumes generated by the stove rise, they cannot continue to rise after encountering the air curtain and are instead drawn into the fume hood for discharge. However, the first method is more expensive; the second method is less effective at absorbing cooking fumes generated by induction cookers or electric grills near the range hood. Summary of the Invention

[0004] The technical problem solved by this invention is to provide a range hood that effectively addresses the shortcomings of existing range hoods in adsorbing fumes from stovetops and cooking appliances, which can lead to harmful fumes wafting into the room. This invention aims to enhance the adsorption of fumes from stovetops and effectively absorb fumes from nearby cooking appliances, thereby reducing the harm to health and lowering costs.

[0005] The above-mentioned technical problems are solved by the following technical solutions:

[0006] Range hoods, including:

[0007] The smoke collection hood and the air box are provided. The smoke outlet of the smoke collection hood is connected to the smoke inlet of the air box. The air box has a smoke inlet on the front side. The bottom front surface of the smoke collection hood has a downward-facing air curtain outlet. The smoke collection hood has an air guiding structure inside.

[0008] An auxiliary fan, the auxiliary fan having a first installation state installed on the smoke hood and a second installation state installed on the smoke inlet via an external connector;

[0009] In the first installation state, the auxiliary fan can deliver air to the air curtain outlet through the air guide structure so that an air curtain is formed on the front side of the fume hood; in the second installation state, the auxiliary fan can guide the oil fumes generated by cooking appliances other than the stove into the air box for exhaust through the external connector.

[0010] The range hood described in this invention has the following advantages compared to the prior art:

[0011] The range hood provided by this invention includes an auxiliary fan, which is detachably mounted on the range hood. In the first installation state, when the auxiliary fan is installed in the smoke collection hood, it delivers air through a guide structure to an air curtain outlet on the front bottom surface of the smoke collection hood, forming an air curtain on the front side of the hood. When the fumes from the cooktop below the range hood rise and encounter the air curtain, they cannot continue to rise and are instead drawn into the smoke collection hood and discharged, thus enhancing the adsorption effect on the fumes generated by the cooktop. In the second installation state, when the auxiliary fan is installed in the smoke inlet via an external connector, it guides fumes from cooking appliances other than the cooktop into the air box for discharge, thereby adsorbing fumes from other cooking appliances near the range hood and discharging them through the range hood's exhaust duct. This range hood can effectively absorb fumes produced by different cooking appliances. With an auxiliary fan, it can enhance the absorption of fumes produced by the stove and also absorb fumes produced by other cooking appliances near the range hood; reducing the amount of fumes floating indoors and lowering the harm to people's health; at the same time, it reduces costs.

[0012] In one embodiment, in the second installation state, the air outlet side of the auxiliary fan faces into the air box, and the external connector includes an external smoke pipe, the first end of which is sealed to the smoke inlet, and the second end of which is detachably connected to the auxiliary fan.

[0013] In one embodiment, the second end of the external flue is provided with a first connector, and the outlet side of the auxiliary fan is provided with a second connector, the second connector being magnetically engaged with the first connector.

[0014] In one embodiment, the second end of the external flue is further provided with a first sealing element, which is located between the second end and the auxiliary fan, and the first sealing element is wrapped around the outside of the first connector.

[0015] And / or, the outlet side of the auxiliary fan is further provided with a second sealing element, the second sealing element is located between the auxiliary fan and the second end, and the second sealing element is wrapped around the outside of the second connector.

[0016] In one embodiment, the range hood further includes a smoke collection hood. In the second installation state, the smoke collection hood is detachably installed on the air inlet side of the auxiliary fan, and the cross-sectional area of ​​the inner cavity of the smoke collection hood gradually decreases in the direction toward the auxiliary fan.

[0017] In one embodiment, the range hood further includes a cover that, in the first installation state, blocks the smoke inlet.

[0018] In one embodiment, a filter screen is provided on the air inlet side of the auxiliary fan.

[0019] In one embodiment, the top of the smoke hood is provided with an installation port, the auxiliary fan is detachably connected to the installation port, the air guiding structure includes an air curtain duct disposed in the smoke hood, the air outlet side of the auxiliary fan is connected to one end of the air curtain duct, and the air curtain outlet is connected to the other end of the air curtain duct.

[0020] In one embodiment, a third connector is provided inside the mounting port, and a second connector is provided on the air outlet side of the auxiliary fan. The second connector and the third connector are magnetically attracted to each other.

[0021] In one embodiment, the auxiliary fan further includes a battery and a charging plug, and a power supply interface is provided inside the smoke hood; when the auxiliary fan is installed inside the smoke hood, the charging plug is connected to the power supply interface to provide power to the auxiliary fan and charge the battery. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the auxiliary fan of the range hood provided in an embodiment of the present invention installed inside the smoke collection hood;

[0024] Figure 2 This is a schematic diagram of the auxiliary fan of the range hood installed at the smoke inlet of the air box according to an embodiment of the present invention;

[0025] Figure 3 yes Figure 2 A magnified view of a section at point A in the middle;

[0026] Figure 4This is a schematic diagram illustrating an application scenario of the range hood adsorbing oil fumes generated by other cooking appliances near the stove, as provided in an embodiment of the present invention.

[0027] Figure 5 This is a cross-sectional view of the auxiliary fan of the range hood provided in this embodiment of the invention installed inside the smoke collection hood;

[0028] Figure 6 This is a cross-sectional view of the auxiliary fan of the range hood provided in the embodiment of the present invention installed in the smoke inlet of the air box;

[0029] Figure 7 yes Figure 6 A magnified view of a section at point B in the middle;

[0030] Figure 8 This is a schematic diagram of the first structure of the auxiliary fan provided in an embodiment of the present invention;

[0031] Figure 9 This is a schematic diagram of the second structure of the auxiliary fan provided in an embodiment of the present invention;

[0032] Figure 10 This is an exploded schematic diagram of the auxiliary fan provided in an embodiment of the present invention;

[0033] Figure 11 This is a schematic diagram of the structure of the auxiliary fan of the range hood provided in the embodiment of the present invention, which is installed at the smoke inlet of the air box and has a smoke collection hood.

[0034] Label Explanation:

[0035] 100. Exhaust duct; 200. Cooktop; 300. Induction cooker;

[0036] 1. Smoke hood; 111. Mounting port; 1111. Power supply interface; 112. Air curtain duct; 1121. Air curtain outlet; 1122. Third connector; 121. Smoke inlet;

[0037] 2. Bellows; 21. Cover;

[0038] 31. Auxiliary fan; 311. Second connector; 312. Second seal; 313. Filter screen; 314. Smoke hood; 315. Charging plug; 316. Control button; 32. External smoke pipe; 321. First connector; 322. First seal. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] In the description of this application, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0041] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0043] like Figures 1-4 As shown, the range hood provided in this embodiment includes a smoke collection hood 1, a blower box 2, and an auxiliary fan 31. The blower box 2 is located above the smoke collection hood 1. The smoke collection hood 1 includes a side section and a top section that are connected to each other. The side section is fixed to the kitchen wall, and the top section is located directly above the stove 200. The smoke inlet 121 of the smoke collection hood 1 is located on the side section and / or the top section, and the smoke outlet of the smoke collection hood 1 is located on the top wall. The smoke outlet of the smoke collection hood 1 is connected to the inlet of the blower box 2. A centrifugal fan is installed inside the blower box 2 to draw the oil fumes from the smoke collection hood 1 into the blower box 2. The outlet of the blower box 2 is connected to the exhaust pipe 100 to exhaust the oil fumes to the external environment.

[0044] When cooking with the stove 200, the fumes produced enter the fume hood 1 through the inlet 121 and are then exhausted through the exhaust pipe 100 by the centrifugal fan in the air box 2. However, some of the fumes produced by the stove 200 also rise and drift upwards to the top, where they cannot be sucked away by the range hood. This results in some of the drifting fumes in the kitchen not being expelled in time and being inhaled by people, which is harmful to health. Furthermore, with increasingly diverse cooking methods, cooking appliances are no longer limited to the stove 200. Sometimes, induction cookers 300 or electric grills are used next to the stove 200, or even in the dining area outside the kitchen. Because the induction cooker 300 or electric grill is far from the range hood, the fumes produced by cooking with the induction cooker 300 or electric grill drift indoors, also harming human health.

[0045] To address the aforementioned issues, the range hood provided in this embodiment has a smoke inlet on the front side of the air box 2, and a downward-facing air curtain outlet 1121 on the bottom front surface of the smoke collection hood 1. The smoke collection hood 1 also has an internal air guiding structure. The auxiliary fan 31 has a first installation state where it is installed on the smoke collection hood 1 and a second installation state where it is installed on the smoke inlet via an external connector. In the first installation state, the auxiliary fan 31 can deliver air to the air curtain outlet 1121 via the air guiding structure, thereby forming an air curtain on the front side of the smoke collection hood 1. In the second installation state, the auxiliary fan 31 can guide the fumes generated by cooking appliances other than the stove 200 into the air box 2 for exhaust via the external connector.

[0046] When the auxiliary fan 31 is installed in the first installation state of the fume hood 1, the auxiliary fan 31 can deliver air to the air curtain outlet 1121 through the air guide structure, so that an air curtain is formed on the front side of the fume hood 1. When the oil fumes generated by the stove 200 below the range hood rise and encounter the air curtain, they cannot continue to rise and are instead drawn into the fume hood 1 and discharged through the air box 2, thus enhancing the adsorption effect on the oil fumes generated by the stove 200. When the auxiliary fan 31 is installed in the second installation state of the smoke inlet through the external connector, the auxiliary fan 31 can guide the oil fumes generated by cooking appliances other than the stove 200 into the air box 2 for discharge through the external connector, so as to achieve adsorption of the oil fumes generated by cooking appliances near the range hood and discharge them through the exhaust pipe 100 of the range hood. This range hood can effectively absorb fumes produced by different cooking appliances. With an auxiliary fan 31, it can enhance the absorption of fumes produced by the stove 200, as well as the fumes produced by other cooking appliances near the range hood; reducing the amount of fumes floating in the room and reducing the harm to people's health; at the same time, it reduces costs.

[0047] In one embodiment, such as Figure 2 and Figure 5As shown, the top of the fume hood 1 is provided with an installation port 111. The auxiliary fan 31 is detachably connected to the installation port 111. The air guiding structure includes an air curtain duct 112 disposed inside the fume hood 1. The air outlet side of the auxiliary fan 31 is connected to one end of the air curtain duct 112, and the air curtain outlet 1121 is connected to the other end of the air curtain duct 112. When the range hood is not working, the auxiliary fan 31 is installed inside the cavity at the top of the fume hood 1 through the installation port 111, which does not affect the appearance of the range hood and ensures its aesthetics. When the user uses the stove 200 to cook, the auxiliary fan 31 is controlled to work. When the oil fumes generated by the stove 200 float upward, the outside air enters the air curtain duct 112 from the auxiliary fan 31, and then flows out from the air curtain duct 112 through the air curtain outlet 1121, forming an air curtain. When the oil fumes generated by the stove 200 float upward, they cannot continue to rise after encountering the air curtain, and instead enter the smoke collection hood 1 from the smoke inlet 121. Then, under the action of the centrifugal fan in the air box 2, they enter the exhaust duct 100 and are discharged, which can prevent the oil fumes from escaping during stir-frying.

[0048] Of course, the air guiding structure may also include a diversion pipe connected to the air curtain duct 112, so that the air curtain duct 112 can be connected to multiple air curtain outlets 1121.

[0049] When the user uses an induction cooker 300 or an electric grill plate, or other cooking appliances, the exhaust side of the auxiliary fan 31 faces into the air box 2. The auxiliary fan 31 can draw some of the oil fumes generated by the induction cooker 300 or electric grill plate near the range hood that cannot be drawn in by the smoke inlet 121 of the smoke collection hood into the air box 2, and then discharge them through the exhaust pipe 100. Furthermore, at this time, the range hood operates at low power, and the centrifugal fan in the air box 2 also works, which can absorb more oil fumes near the range hood.

[0050] In one embodiment, such as Figure 4 and Figure 6 As shown, the external component includes an external flue pipe 32. The first end of the external flue pipe 32 is sealed and connected to the smoke inlet, and the second end is detachably connected to the auxiliary fan 31. The external flue pipe 32 extends the air intake on the fan box 2, allowing the auxiliary fan 31 to be closer to the range hood or even to cooking appliances such as the induction cooker 300 or electric grill in the dining room. This enables the range hood, fixedly installed on the kitchen wall, to absorb fumes generated by cooking appliances other than the stove 200, meeting various user needs.

[0051] The external components also include support components for supporting the external smoke pipe 32, so as to ensure the stability of the long external smoke pipe 32.

[0052] The length and shape of the external smoke pipe 32 are not specifically limited in this embodiment. The range hood can be configured with various external smoke pipes 32 of different lengths or shapes to improve applicability. Of course, the external smoke pipe 32 can also be made telescopic, and the user can adjust the length of the external smoke pipe 32 according to actual usage needs.

[0053] Since the auxiliary fan 31 can be installed in different locations according to different application scenarios, in order to improve the convenience of assembling and disassembling the auxiliary fan 31, the auxiliary fan 31 is magnetically connected to both the mounting port 111 and the smoke outlet.

[0054] In one embodiment, such as Figure 5 As shown, a third connector 1122 is provided inside the mounting port 111, and the auxiliary fan 31 is connected to the mounting port 111 through the third connector 1122. Specifically, a mounting bracket is provided inside the mounting port 111, and a connecting port is provided on the mounting bracket. A first mounting groove is provided around the connecting port, and the third connector 1122 is placed in the first mounting groove. Of course, the first mounting groove for installing the third connector 1122 can also be directly provided around the connecting port between the air curtain duct 112 and the auxiliary fan 31.

[0055] In this embodiment, the third connector 1122 is a first magnetic ring. Of course, in other embodiments, the third connector 1122 may also be a plurality of first magnetic blocks, which are spaced apart around the circumference of the communication port.

[0056] In one embodiment, the auxiliary fan 31 can be made of a metal material that can be magnetically connected, and can be directly magnetically connected through a magnetic component such as a first magnetic ring or a first magnetic block.

[0057] In one embodiment, such as Figure 6 and Figure 7 As shown, the second end of the external flue pipe 32 is provided with a first connector 321, and the external flue pipe 32 is connected to the auxiliary fan 31 through the first connector 321.

[0058] Specifically, the second end of the external flue pipe 32 is provided with a second mounting groove, and the first connector 321 is disposed in the second mounting groove. The first connector 321 can be a second magnetic ring or multiple second magnetic blocks. Multiple second magnetic blocks are spaced apart in the second mounting groove.

[0059] In one embodiment, the auxiliary fan 31 can be made of a metal material that can be magnetically connected, and the external smoke pipe 32 is directly magnetically connected to the auxiliary fan 31 through a magnetic component such as a second magnetic ring or a second magnetic block.

[0060] In one embodiment, a second connector 311 is provided on the air outlet side of the auxiliary fan 31. A third mounting groove is provided on the air outlet side of the auxiliary fan 31, and the second connector 311 is installed in the third mounting groove. The second connector 311 can be a third magnetic ring or multiple third magnetic blocks. Multiple third magnetic blocks are spaced apart in the third mounting groove.

[0061] When the auxiliary fan 31 is installed in the mounting port 111, the second connector 311 and the third connector 1122 are magnetically attracted to each other; when the auxiliary fan 31 is connected to the air intake through the external smoke pipe 32, the second connector 311 and the first connector 321 are magnetically attracted to each other.

[0062] Of course, in other embodiments, when the auxiliary fan 31 is installed in the mounting port 111, a metal ring that can be magnetically connected by the second connector 311 can also be provided in the first mounting groove circumferentially of the connecting port of the mounting bracket, or multiple metal blocks can be spaced apart in the first mounting groove. When the auxiliary fan 31 is connected to the air intake through the external flue 32, a metal ring that can be magnetically connected by the second connector 311 can also be provided in the second mounting groove at the second end of the external flue 32, or multiple metal blocks can be spaced apart in the second mounting groove. Both the metal ring and the metal blocks are made of iron or other metals that can be magnetically connected by the second connector 311.

[0063] In one embodiment, such as Figure 7 As shown, a first sealing element 322 is also provided at the second end of the external flue pipe 32. The first sealing element 322 is located between the second end and the auxiliary fan 31, and it wraps around the outside of the first connecting element 321. The first sealing element 322 has the function of sealing and preventing oil, preventing the flue gas entering the external flue pipe 32 from the auxiliary fan 31 from overflowing at the connection between the auxiliary fan 31 and the second end. At the same time, it prevents the first connecting element 321 from being affected by oil stains, thus avoiding unstable connection between the auxiliary fan 31 and the second end.

[0064] Specifically, the cross-section of the first seal 322 is U-shaped, and the first connector 321 is placed inside the first seal 322 through the opening of the U-shaped first seal 322, and then placed together in the second mounting groove. The first connector 321 is set facing the bottom of the second mounting groove, and the outer periphery of the first seal 322 is interference-fitted with the second mounting groove.

[0065] In one embodiment, a second sealing element 312 is further provided on the air outlet side of the auxiliary fan 31. The second sealing element 312 is located between the auxiliary fan 31 and the second end, and wraps around the outside of the second connecting member 311. The second sealing element 312 also serves to seal and prevent oil leakage, enhancing the sealing performance between the auxiliary fan 31 and the second end; further ensuring the stability of the connection between the auxiliary fan 31 and the second end.

[0066] Specifically, the cross-section of the second seal 312 is also U-shaped. The first connector 321 is placed inside the second seal 312 through the opening of the U-shaped second seal 312, and then placed together in the third mounting groove. The first connector 321 is set facing the bottom of the third mounting groove, and the outer periphery of the second seal 312 is interference-fitted with the third mounting groove.

[0067] When the auxiliary fan 31 is installed in the mounting port 111, the outlet side of the auxiliary fan 31 faces the connection port of the air curtain duct 112. The second connector 311 is magnetically connected to the third connector 1122 through the second seal 312. The second seal 312 serves to seal and prevent oil leakage. The sealing requirement between the auxiliary fan 31 and the connection port of the air curtain duct 112 is relatively low, and the third connector 1122 may not need to be wrapped with a sealing ring. However, for better sealing, an additional sealing ring can be installed inside the first mounting groove to wrap around the third connector 1122.

[0068] When the auxiliary fan 31 is installed on the external flue 32, the outlet side of the auxiliary fan 31 faces the second end of the external flue 32. The second connector 311 and the first connector 321 are magnetically connected. Since the fumes generated by cooking appliances such as the induction cooker 300 or electric grill near the range hood need to be drawn into the air box 2 by the auxiliary fan 31 with the external flue 32, there is a lot of fumes in contact between the outlet side of the auxiliary fan 31 and the interface of the external flue 32. Therefore, to prevent the magnetic properties of the second connector 311 and the first connector 321 from being affected by oil stains, which could lead to unstable connection between the auxiliary fan 31 and the external flue 32, a second sealing element 312 is wrapped around the second connector 311, and a first sealing element 322 is wrapped around the first connector 321 to ensure the stability of the magnetic connection between the second connector 311 and the first connector 321. Of course, in other embodiments, only one of the first sealing element 322 and the second sealing element 312 may be provided.

[0069] In one embodiment, reference is made to Figures 8-10 The auxiliary fan 31 has a detachable filter 313 connected to its air inlet side. Through the filter 313, kitchen air enters the auxiliary fan 31, then flows through the auxiliary fan 31 into the air curtain duct 112 and out through the air curtain outlet 1121, forming an air curtain to provide clean airflow for the range hood. When the auxiliary fan 31 is installed in the external flue duct 32, the filter 313 serves two purposes: firstly, it condenses cooking fumes; because the filter 313 is made of metal and has a low temperature, the high-temperature cooking fumes condense on the cooler filter 313; secondly, the filter 313 also provides protection, preventing users from accidentally touching the blades of the auxiliary fan 31 and causing injury.

[0070] The filter screen 313 is removable. When the filter screen 313 has been used for a period of time and the oil stains on it are thick and the filtration effect is poor, the filter screen 313 can be removed for cleaning. After cleaning, it can be reinstalled for continued use.

[0071] In one embodiment, such as Figure 11 As shown, the range hood also includes a smoke collection hood 314. In the second installation state, the smoke collection hood 314 is detachably installed on the air inlet side of the auxiliary fan 31, and the cross-sectional area of ​​the inner cavity of the smoke collection hood 314 gradually decreases in the direction towards the auxiliary fan 31. When the auxiliary fan 31 is installed at the second end of the external smoke pipe 32, the smoke collection hood 314 is installed on the air inlet side of the auxiliary fan 31. The smoke collection hood 314 has a gathering effect on the smoke near the range hood, further improving the effect of the range hood in adsorbing the oil fumes generated by the nearby induction cooker 300 or electric grill plate and other cooking appliances.

[0072] In one embodiment, continue to refer to Figure 1 and Figure 5 The range hood also includes a cover 21, which blocks the smoke inlet in the first installation state. When the auxiliary fan 31 is installed inside the smoke collection hood 1, the cover 21 blocks the smoke inlet to prevent the fumes that enter through the smoke collection hood 1 from flowing out through the smoke inlet again.

[0073] In one embodiment, such as Figure 3 and Figure 8 As shown, the auxiliary fan 31 also includes a battery and a charging plug 315. A power supply interface 1111 is provided inside the smoke hood 1. When the auxiliary fan 31 is installed inside the smoke hood 1, the charging plug 315 can be connected to the power supply interface 1111 to provide power to the auxiliary fan 31 and charge the battery. When the auxiliary fan 31 is installed on the external smoke pipe 32, it is powered by the battery. When the auxiliary fan 31 is installed inside the smoke hood 1, it is connected to the power supply interface 1111 via the charging plug 315. The power supply interface 1111 is electrically connected to an external power source, enabling it to provide power to the auxiliary fan 31 while simultaneously charging the battery.

[0074] Specifically, the range hood and the external power socket need to be 220V. A converter is installed inside the range hood. The converter connects the power supply interface 1111 and the external power supply, and converts the voltage connected to the range hood into 24V voltage before supplying it to the auxiliary fan 31.

[0075] In one embodiment, continue to refer to Figure 9 The auxiliary fan 31 is also equipped with a control button 316 on the air inlet side. The control button 316 controls the on / off switch and the wind speed of the auxiliary fan 31, which makes it convenient for users to adjust the size of the air curtain formed and the adsorption capacity of the oil fumes generated by other cooking utensils near the range hood, excluding the stove 200.

[0076] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0077] The specific embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A range hood, characterized in that, include: The smoke collection hood (1) and the air box (2) are provided. The smoke outlet of the smoke collection hood (1) is connected to the smoke inlet of the air box (2). The air box (2) has a smoke inlet on its front side. The bottom front surface of the smoke collection hood (1) has a downward-facing air curtain outlet (1121). The smoke collection hood (1) has an air guide structure inside. An auxiliary fan (31) has a first installation state installed on the smoke hood (1) and a second installation state installed on the smoke inlet via an external connector; In the first installation state, the auxiliary fan (31) can deliver air to the air curtain outlet (1121) through the air guide structure so that an air curtain is formed on the front side of the smoke hood (1); in the second installation state, the auxiliary fan (31) can guide the oil fumes generated by cooking appliances other than the stove (200) into the air box (2) for discharge through the external connector.

2. The range hood according to claim 1, characterized in that, In the second installation state, the air outlet side of the auxiliary fan (31) faces the inside of the air box (2), and the external component includes an external smoke pipe (32). The first end of the external smoke pipe (32) is sealed and connected to the smoke inlet, and the second end is detachably connected to the auxiliary fan (31).

3. The range hood according to claim 2, characterized in that, The second end of the external smoke pipe (32) is provided with a first connector (321), and the air outlet side of the auxiliary fan (31) is provided with a second connector (311). The second connector (311) and the first connector (321) are magnetically attracted to each other.

4. The range hood according to claim 3, characterized in that, The second end of the external flue (32) is also provided with a first sealing element (322), which is located between the second end and the auxiliary fan (31), and the first sealing element (322) is wrapped around the outside of the first connector (321); And / or, the air outlet side of the auxiliary fan (31) is also provided with a second sealing element (312), the second sealing element (312) is located between the auxiliary fan (31) and the second end, and the second sealing element (312) is wrapped around the outside of the second connector (311).

5. The range hood according to claim 1, characterized in that, The range hood also includes a smoke collection hood (314). In the second installation state, the smoke collection hood (314) is detachably installed on the air inlet side of the auxiliary fan (31), and the cross-sectional area of ​​the inner cavity of the smoke collection hood (314) gradually decreases in the direction toward the auxiliary fan (31).

6. The range hood according to claim 1, characterized in that, The range hood also includes a cover (21), which blocks the smoke inlet when in the first installation state.

7. The range hood according to claim 1, characterized in that, The auxiliary fan (31) has a filter screen (313) detachably connected to its air inlet side.

8. The range hood according to any one of claims 1-7, characterized in that, The top of the smoke hood (1) is provided with an installation port (111), the auxiliary fan (31) is detachably connected to the installation port (111), the air guiding structure includes an air curtain duct (112) disposed in the smoke hood (1), the air outlet side of the auxiliary fan (31) is connected to one end of the air curtain duct (112), and the air curtain outlet (1121) is connected to the other end of the air curtain duct (112).

9. The range hood according to claim 8, characterized in that, A third connector (1122) is provided in the mounting port (111), and a second connector (311) is provided on the air outlet side of the auxiliary fan (31). The second connector (311) and the third connector (1122) are magnetically attracted to each other.

10. The range hood according to any one of claims 1-7, characterized in that, The auxiliary fan (31) also includes a battery and a charging plug (315). A power supply interface (1111) is provided inside the smoke hood (1). When the auxiliary fan (31) is installed inside the smoke hood (1), the charging plug (315) is connected to the power supply interface (1111) to provide power to the auxiliary fan (31) and charge the battery.

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