Supercharging device and extractor hood

Abstract

This invention relates to the field of kitchen appliance technology, and more particularly to a pressurizing device and a range hood. The pressurizing device includes a pressurizing component and an airflow channel; an exhaust hood is provided at the air outlet of the range hood, and the exhaust hood has an exhaust channel communicating with the air outlet; the pressurizing component has a nozzle, which communicates with the exhaust channel through the airflow channel, and the nozzle can spray airflow into the smoke collection hood of the range hood. The range hood includes the aforementioned pressurizing device. The present invention aims to provide a pressurizing device and a range hood to alleviate the technical problem of poor smoke extraction efficiency in existing range hoods.

Description

Technical Field

[0001] This invention relates to the field of kitchen appliance technology, and in particular to a pressure boosting device and a range hood. Background Art

[0002] A range hood, also known as a kitchen exhaust fan, is a kitchen appliance used to purify the kitchen environment. A range hood generally consists of a main body with an internal fan and a smoke collection hood connected to the main body, with a smoke collection chamber inside the hood that communicates with the cooking environment. During cooking, a large amount of cooking fumes are generated above the stove. Under the action of the fan, a negative pressure zone is created in the smoke collection chamber, where the fumes first accumulate. The purified fumes are then discharged into the external environment, thus achieving the purpose of purifying the kitchen environment.

[0003] However, in the current technology, the range hood is not very effective at removing cooking fumes. The fumes can easily escape and are not drawn away by the range hood, which can affect the kitchen environment and the health of users.

[0004] Therefore, this application provides a new pressure boosting device and range hood to address the above-mentioned problems. Summary of the Invention

[0005] The primary objective of this invention is to provide a pressurization device to alleviate the technical problem of poor smoke extraction performance of existing range hoods.

[0006] The second objective of this invention is to provide a range hood that alleviates the technical problem of poor smoke extraction performance in existing range hoods.

[0007] Based on the aforementioned first objective, the present invention provides a pressurizing device, including a pressurizing component and an airflow channel;

[0008] The range hood is equipped with an exhaust hood at the air outlet, and the exhaust hood is provided with an air outlet channel that communicates with the air outlet;

[0009] The pressurizing component is provided with a nozzle, which is connected to the air outlet channel through the airflow channel, and the nozzle can spray airflow into the smoke collection hood of the range hood.

[0010] Furthermore, the extension direction of the air outlet channel is consistent with the air outlet direction;

[0011] The air outlet hood has a first opening and a connecting channel. The connecting channel is connected to the air outlet channel through the first opening, and the airflow channel is connected to the connecting channel.

[0012] Furthermore, the first opening is perpendicular to the extension direction of the air outlet channel.

[0013] Furthermore, the connecting channel includes a first channel communicating with the first opening, and the air outlet shroud is also provided with a second opening, through which the first channel communicates with the airflow channel;

[0014] The direction of extension of the first channel changes back and forth from the first opening to the second opening.

[0015] Furthermore, multiple first ports are provided, and the multiple first ports are arranged at intervals along the circumference of the air outlet channel;

[0016] Multiple first channels and multiple second ports are provided, and the multiple first channels, multiple second ports and multiple first ports correspond one-to-one.

[0017] Furthermore, the communication channel also includes a second channel, with multiple second ports connected to the second channel, and the second channel connected to the airflow channel via a third port.

[0018] Furthermore, the smoke hood is provided with a smoke collection chamber and a smoke inlet communicating with the smoke collection chamber, and the nozzle is capable of spraying airflow into the smoke collection chamber;

[0019] The pressurizing component is located close to the smoke inlet, and the nozzle is located on the side of the smoke inlet away from the smoke collection chamber.

[0020] Furthermore, an oil filter screen is provided at the smoke inlet, and the oil filter screen is provided with multiple filter holes, so that the airflow ejected from the nozzle can pass through the filter holes and enter the smoke collection chamber.

[0021] Furthermore, the pressurizing component is provided with a pressurizing channel communicating with the airflow channel, and the nozzle is communicating with the pressurizing channel;

[0022] The nozzle is provided in multiple ways, and the multiple nozzles are spaced apart along the extension direction of the pressurization channel; or, the nozzle is an elongated hole extending along the extension direction of the pressurization channel.

[0023] Furthermore, along the extending direction of the pressurization channel, the pressurization component is an annular pipe extending circumferentially along the smoke inlet, and the nozzle is disposed on one side near the center line of the annular pipe.

[0024] Furthermore, the pressurizing component includes a body having a first end and a second end disposed opposite to each other. The second end is bent toward the first end to form the pressurizing channel within the body. The first end and the second end are alternately disposed to form the nozzle, and the first end is disposed toward the pressurizing channel relative to the second end.

[0025] Furthermore, the first end is provided with a guide portion capable of guiding the airflow in the pressurization channel to the nozzle.

[0026] Furthermore, a flow channel communicating with the nozzle is formed between the side of the body near the second end and the guide portion;

[0027] The guide portion has a smooth transition surface on the side near the drainage channel, and / or the body has a smooth transition surface on the side near the drainage channel.

[0028] Furthermore, along the extension direction of the drainage channel, from the pressurization channel to the nozzle, the cross-section of the drainage channel gradually decreases along its extension direction.

[0029] Furthermore, the pressurization device also includes an elbow and a connecting pipe, and the air outlet is connected to the pressurization channel through the elbow and the connecting pipe.

[0030] Furthermore, the range hood also includes a body with a built-in fan, and the smoke collection hood is located below the body;

[0031] The connecting pipe includes a first pipe section that penetrates the body and a second pipe section disposed in the smoke collection chamber. The air outlet is connected to the first pipe section, and the pressurization channel is connected to the second pipe section.

[0032] The first pipe segment is a rectangular pipe, and along the extension direction perpendicular to the first pipe segment, the smaller outer wall surface of the first pipe segment is projected onto the fan.

[0033] Furthermore, the smoke collection hood has two smoke inlets and two pressurizing components, with each pressurizing component corresponding to one of the two smoke inlets.

[0034] The booster device also includes a three-way pipe, through which the connecting pipe and the booster channels of the two booster components are connected.

[0035] By adopting the above technical solution, the pressurization device of the present invention has the following beneficial effects:

[0036] In this pressurizing device, since the air outlet duct is connected to the air outlet of the range hood, and the nozzle is connected to the air outlet duct through the airflow duct, the nozzle and the air outlet of the range hood are connected. Therefore, part of the airflow discharged by the range hood through the air outlet can enter the air outlet duct and the airflow duct and be sprayed out from the nozzle. The nozzle can spray the airflow into the smoke collection hood. At the same time, the airflow sprayed from the nozzle can bring the surrounding airflow into the smoke collection hood. That is, a negative pressure can be formed near the nozzle, which is conducive to the air entering the smoke collection hood, thereby improving the smoke extraction effect of the range hood, preventing smoke from escaping to a certain extent, and helping to ensure the kitchen environment and the health of users.

[0037] Based on the second objective mentioned above, the present invention provides a range hood, including a body with a fan inside, a smoke collection hood connected to the lower part of the body, and the pressurization device.

[0038] The smoke hood is provided with a smoke collection chamber and a smoke inlet communicating with the smoke collection chamber. The body is provided with an air outlet, and air can pass through the smoke inlet and the smoke collection chamber and then be discharged from the air outlet.

[0039] The airflow channel of the booster device is connected to the air outlet.

[0040] By adopting the above technical solution, the range hood of the present invention has the following beneficial effects:

[0041] By installing the aforementioned pressurization device inside the range hood, the range hood thus possesses all the advantages of the aforementioned pressurization device, which will not be elaborated further here. Attached Figure Description

[0042] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is one of the structural schematic diagrams of a range hood provided in an embodiment of the present invention;

[0044] Figure 2 The second schematic diagram of the structure of the range hood provided in the embodiment of the present invention (fan not shown);

[0045] Figure 3 for Figure 2 The diagram shows a magnified view of a portion of the range hood's structure.

[0046] Figure 4 A cross-sectional view of the pressure boosting component of a range hood provided in an embodiment of the present invention;

[0047] Figure 5 A schematic diagram of the pressurization device and air outlet hood of the range hood provided in an embodiment of the present invention;

[0048] Figure 6 for Figure 5 A partial structural schematic diagram of the pressurization device and air outlet shroud shown;

[0049] Figure 7 for Figure 6 Enlarged view of a portion of the pressurization device and air outlet shroud shown;

[0050] Figure 8 This is one of the structural schematic diagrams of the exhaust hood and elbow of the range hood provided in an embodiment of the present invention;

[0051] Figure 9 This is the second schematic diagram of the exhaust hood and elbow of the range hood provided in the embodiment of the present invention.

[0052] Figure label:

[0053] 1-Boosting device; 11-Boosting component; 12-Nozzle; 13-Boosting channel; 14-Second end; 15-Guide section; 16-Drainage channel; 17-Elbow; 181-First pipe section; 182-Second pipe section; 19-Tee pipe;

[0054] 2-Body; 21-Fan;

[0055] 3-Smoke hood; 31-Smoke collection chamber;

[0056] 4- Oil filter screen; 41- Filter holes;

[0057] 5-Air outlet cover; 51-Air outlet channel; 52-First outlet; 53-First channel; 54-Second outlet; 55-Second channel; 56-Third outlet. Detailed Implementation

[0058] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0059] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for 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. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0060] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a direct connection or an indirect connection through an intermediate medium; it can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0061] Example 1

[0062] Please see Figure 1 and Figure 2 This embodiment provides a pressurizing device 1, which includes a pressurizing component 11 and an airflow channel; an air outlet hood 5 is provided at the air outlet of the range hood, and the air outlet hood 5 is provided with an air outlet channel 51 communicating with the air outlet; the pressurizing component 11 is provided with a nozzle 12, which is connected to the air outlet channel 51 through the airflow channel, and the nozzle 12 can spray airflow into the smoke collection hood 3 of the range hood.

[0063] In this pressurization device, since the air outlet duct 51 is connected to the air outlet of the range hood, and the nozzle 12 is connected to the air outlet duct 51 through the airflow channel, the nozzle 12 is connected to the air outlet of the range hood. Therefore, part of the airflow discharged through the air outlet can enter the air outlet duct 51 and the airflow channel and be sprayed out from the nozzle 12. The nozzle 12 can spray the airflow into the smoke collection hood 3. At the same time, the airflow sprayed out by the nozzle 12 can bring the surrounding airflow into the smoke collection hood 3. That is, a negative pressure can be formed near the nozzle 12, which is conducive to the air entering the smoke collection hood 3, thereby improving the smoke extraction effect of the range hood, preventing smoke from escaping to a certain extent, and helping to ensure the kitchen environment and the health of users.

[0064] Preferably, please refer to Figure 3 and Figure 4 In this embodiment, the smoke hood 3 is provided with a smoke collection chamber 31 and a smoke inlet communicating with the smoke collection chamber 31. The nozzle 12 can spray airflow into the smoke collection chamber 31. The pressurizing component 11 is located close to the smoke inlet, and the nozzle 12 is located on the side of the smoke inlet away from the smoke collection chamber 31.

[0065] With this configuration, the airflow at the outlet can pass through the airflow channel and then be injected into the smoke collection chamber 31 from the side away from the smoke inlet 31 via the nozzle 12. Simultaneously, the airflow ejected from the nozzle 12 acts as a jet, drawing in air mixed with cooking fumes from outside the smoke collection chamber 31, thus bringing back some of the escaped fumes. In other words, the range hood injects airflow into the smoke collection chamber 31 at a certain velocity through the nozzle 12. The higher the airflow velocity, the greater the negative pressure generated near the nozzle 12, which is more conducive to drawing air and cooking fumes from outside the smoke collection chamber 31 into it.

[0066] Preferably, please refer to Figure 2 and Figure 3 In this embodiment, a filter oil screen 4 is provided at the smoke inlet, and a plurality of filter holes 41 are provided on the filter oil screen 4. The airflow ejected from the nozzle 12 can enter the smoke collection chamber 31 after passing through the filter holes 41.

[0067] Among them, the oil filter screen 4 is used to filter oil or particulate impurities in the air.

[0068] With this setup, outside air is first filtered by the oil filter 4 before entering the smoke collection chamber 31 through the smoke inlet. Impurities adhere to the oil filter 4, while the air enters the smoke collection chamber 31 through the filter holes 41, which improves the degree of air purification and prevents air with more impurities from polluting the range hood.

[0069] Preferably, please refer to Figure 3 and Figure 4 The pressurizing component 11 is provided with a pressurizing channel 13 that communicates with the airflow channel, and the nozzle 12 is communicated with the pressurizing channel 13; multiple nozzles 12 are provided, and the multiple nozzles 12 are spaced apart along the extension direction of the pressurizing channel 13; or, in this embodiment, the nozzle 12 is an elongated hole extending along the extension direction of the pressurizing channel 13.

[0070] With this configuration, the airflow at the air outlet can pass through the airflow channel and the pressurization channel 13 in sequence before being injected into the smoke collection chamber 31 through the nozzle 12.

[0071] The nozzle 12 is provided in multiple ways, and the multiple nozzles 12 are spaced apart along the extension direction of the pressurization channel 13; or, in this embodiment, the nozzle 12 is an elongated hole extending along the extension direction of the pressurization channel 13, which increases the area of ​​the nozzle 12, thereby increasing the air flow rate ejected from the nozzle 12, which is beneficial to bring more outside air into the smoke collection chamber 31.

[0072] Preferably, please refer to Figure 2 and Figure 5 In this embodiment, along the extending direction of the pressurizing channel 13, the pressurizing component 11 is an annular pipe extending circumferentially along the smoke inlet, and the nozzle 12 is disposed on one side close to the center line of the annular pipe.

[0073] Outside air can pass through the pressure booster 11 from the side near the center line. Since the pressure booster 11 is located near the smoke inlet, outside air also passes through the smoke inlet and enters the smoke collection chamber 31.

[0074] This design creates negative pressure around the smoke inlet, increasing the area of ​​the negative pressure zone at the smoke inlet and further improving the smoke extraction effect of the range hood.

[0075] Preferably, please refer to Figure 4 In this embodiment, the pressurizing component 11 includes a body having a first end and a second end 14 disposed opposite to each other. The second end 14 is bent toward the first end to form a pressurizing channel 13 within the body. The first end and the second end 14 are alternately disposed to form a nozzle 12, and the first end is disposed toward the pressurizing channel 13 relative to the second end 14.

[0076] It should be noted that the gap formed by the alternation between the first end and the second end 14 is the nozzle 12, so the air entering the pressurization channel 13 can flow along the pressurization channel 13 and be ejected from the nozzle 12.

[0077] With this setup, the booster component 11 can be manufactured as a single piece, making its production simpler and more convenient, without the need for additional drilling to form the nozzle 12.

[0078] The nozzle 12 ejects airflow toward the smoke collection chamber 31, so that air from the outside environment passes through the smoke inlet and the smoke collection chamber 31 in sequence and is discharged from the air outlet. Therefore, preferably, the nozzle 12 is arranged from bottom to top and extends obliquely toward the filter hole 41.

[0079] Preferably, please continue to see Figure 4 In this embodiment, the first end is provided with a guide part 15 that can guide the airflow in the pressurization channel 13 to the nozzle 12.

[0080] During the flow of air from the pressurization channel 13 to the nozzle 12, upon contact with the guide section 15, the airflow changes direction due to the Coanda effect, flowing along the guide section 15 from a downward angle to an upward angle. In other words, the guide section 15 guides the airflow in the pressurization channel 13 to the nozzle 12, facilitating the rapid ejection of airflow from the pressurization channel 13 and thus reducing aerodynamic noise.

[0081] Preferably, please refer to Figure 4 In this embodiment, a flow channel 16 communicating with the nozzle 12 is formed between the side of the main body near the second end 14 and the guide portion 15.

[0082] The guide portion 15 has a smooth transition surface on the side near the drainage channel 16, or the main body has a smooth transition surface on the side near the drainage channel 16. Preferably, both the guide portion 15 and the main body have a smooth transition surface on the side near the drainage channel 16.

[0083] This design reduces noise caused by airflow impacting the guide section 15 and the side of the main body near the flow channel 16, thus improving the user's cooking experience.

[0084] Preferably, please refer to Figure 4 In this embodiment, along the extension direction of the drainage channel 16, from the pressurization channel 13 to the nozzle 12, the cross-section of the drainage channel 16 gradually decreases along its extension direction.

[0085] This design allows the airflow velocity to gradually increase through the diversion channel 16. According to Bernoulli's principle, the pressure in the diversion channel 16 decreases from the pressurization channel 13 to the nozzle 12, thus increasing the pressure difference with the external environment. This makes the diversion channel 16 an acceleration channel for the airflow, which facilitates the flow of outside air to the nozzle 12 and into the smoke collection chamber 31 with the airflow ejected from the nozzle 12. This enhances the range hood's smoke extraction capacity and prevents smoke from escaping.

[0086] Preferably, please refer to Figure 2 , Figure 5 and Figure 7 In this embodiment, the pressurizing device 1 also includes an elbow 17 and a connecting pipe, and the air outlet is connected to the pressurizing channel 13 through the elbow 17 and the connecting pipe.

[0087] The 17-angle bend is designed to allow the connecting pipe to turn relative to the air outlet, which is beneficial for the reasonable distribution of the connecting pipe inside the range hood.

[0088] The connecting pipe is designed to facilitate the connection between the pressurizing component 11 near the smoke inlet and the elbow 17 near the air outlet.

[0089] Preferably, please refer to Figure 2 and Figure 5 The range hood also includes a body 2 with a fan 21 inside, and a smoke collection hood 3 located below the body 2; the connecting pipe includes a first pipe section 181 penetrating the body 2 and a second pipe section 182 located in the smoke collection chamber 31, the air outlet is connected to the first pipe section 181, and the pressurization channel 13 is connected to the second pipe section 182; the first pipe section 181 is a rectangular pipe, and along the extension direction perpendicular to the first pipe section 181, the smaller outer wall surface of the first pipe section 181 is projected onto the fan 21.

[0090] With this configuration, the first pipe section 181 penetrates the body 2, and the second pipe section 182 is located in the smoke collection chamber 31, so as to facilitate the connection between the pressurizing component 11 near the smoke inlet and the elbow 17 near the air outlet.

[0091] The first pipe section 181 is a rectangular pipe, and along the extension direction perpendicular to the first pipe section 181, the smaller outer wall surface of the first pipe section 181 is projected onto the fan 21 to reduce the projection of the first pipe section 181 onto the fan 21 and reduce the impact of the first pipe section 181 on the air intake and exhaust of the fan 21.

[0092] Optionally, the second pipe section 182 is a pipe with a rectangular cross-section, a square cross-section, or a circular cross-section. Preferably, the second pipe section 182 is a pipe with a circular cross-section, that is, the second pipe section 182 is a circular pipe, which reduces the collision of airflow within the second pipe section 182, thereby reducing noise.

[0093] Preferably, please refer to Figure 2 and Figure 5 In this embodiment, the smoke hood 3 has two smoke inlets and two pressure boosting components 11, with each pressure boosting component 11 corresponding to one of the two smoke inlets. The pressure boosting device 1 also includes a three-way pipe 19, through which the connecting pipe and the pressure boosting channels 13 of the two pressure boosting components 11 are connected.

[0094] With this setup, pressure boosters 11 are installed near both smoke inlets, further improving the smoke extraction effect of the range hood.

[0095] Preferably, please refer to Figure 1 , Figure 5 and Figure 6 In this embodiment, the airflow channel is connected to the air outlet of the range hood through the air outlet hood 5. It should be noted that the air outlet hood 5 is also a check valve; the air discharged by the fan 21 enters the air outlet channel 51 and then exits.

[0096] Preferably, please refer to the figure. Figure 6 In this embodiment, the exhaust hood 5 is provided with an exhaust channel 51 that communicates with the exhaust port of the range hood, and the extension direction of the exhaust channel 51 is consistent with the exhaust direction of the exhaust port; the exhaust hood 5 is provided with a first opening 52 and a connecting channel, the connecting channel is connected to the exhaust channel 51 through the first opening 52, and the airflow channel is connected to the connecting channel.

[0097] The air outlet duct 51 extends in the same direction as the outlet air flow, so that the air discharged by the fan 21 can enter the air outlet duct 51 and prevent noise from being generated by changes in the air flow direction.

[0098] In this process, after the air enters the air outlet 51, some of the air can enter the airflow channel through the first inlet 52, and then enter the pressurization device 1, and thus be ejected from the nozzle 12.

[0099] This configuration allows the air discharged from the fan 21 to be delivered to the airflow channel as the air source for the jet stream of the pressurization device 1, without the need for an additional power source or air source, thus simplifying the structure of the range hood and reducing its cost.

[0100] Preferably, please refer to Figure 6 In this embodiment, the first opening 52 is perpendicular to the extension direction of the air outlet duct 51. This arrangement reduces the impact of the first opening 52 on the normal discharge of airflow in the air outlet duct 51.

[0101] It should be noted that during the process of airflow being discharged through the air outlet 51, some of the airflow can enter the airflow channel through the first inlet 52, providing an air source for the booster 11.

[0102] Preferably, please refer to Figure 7 , Figure 8 and Figure 9 In this embodiment, the connecting channel includes a first channel 53 connected to the first opening 52, and a second opening 54 is also provided on the air outlet hood 5. The first channel 53 is connected to the airflow channel through the second opening 54. The extension direction of the first channel 53 changes back and forth from the first opening 52 to the second opening 54.

[0103] For example, along the extending direction of the first channel 53, the first channel 53 is in the shape of a rectangular spiral or a circular spiral.

[0104] With this setup, the airflow direction can change multiple times as it flows from the first inlet 52 to the second inlet 54, allowing the airflow to collide with the exhaust hood 5. This facilitates the separation of the airflow from impurities such as oil and smoke, thereby reducing the amount of impurities in the airflow, decreasing the probability of impurities clogging the pressurization channel, and extending the service life of the pressurization device 1.

[0105] Preferably, please refer to Figure 6 and Figure 7 In this embodiment, multiple first ports 52 are provided, and the multiple first ports 52 are arranged at intervals along the circumference of the air outlet channel 51; multiple first channels 53 and multiple second ports 54 are provided, and the multiple first channels 53, multiple second ports 54 and multiple first ports 52 correspond one to one.

[0106] This configuration increases the entry area of ​​the airflow from the air outlet duct 51 into the pressurizing component 11, so that the airflow from the air outlet duct 51 can enter the pressurizing component 11 quickly and efficiently.

[0107] Preferably, a plurality of first outlets 52 are evenly arranged along the circumference of the air outlet channel 51.

[0108] Preferably, please refer to Figure 7 and Figure 8 In this embodiment, the airflow channel also includes a second channel 55, and multiple second ports 54 are connected to the second channel 55. The second channel 55 is connected to the pressurization device 1 through a third port 56.

[0109] With this setup, the airflow from multiple first channels 53 converges into the second channel 55 through the second port 54, and then enters the booster device 1 through the third port 56, so as to provide the booster device 1 with concentrated airflow and pressure.

[0110] Example 2

[0111] Embodiment 2 provides a range hood, which includes the pressurization device 1 of Embodiment 1. The technical features of the pressurization device 1 disclosed in Embodiment 1 are also applicable to this embodiment, and the technical features of the pressurization device 1 disclosed in Embodiment 1 will not be described again. The implementation of the range hood will be further described in detail below with reference to the accompanying drawings.

[0112] Please see Figure 1 and Figure 2 The range hood provided in this embodiment includes a body 2 with a fan 21 inside, a smoke collection hood 3 connected to the bottom of the body 2, and a pressurizing device 1; the smoke collection hood 3 is provided with a smoke collection chamber 31 and a smoke inlet communicating with the smoke collection chamber 31, the body 2 is provided with an air outlet, and air can be discharged from the air outlet after passing through the smoke inlet and the smoke collection chamber 31; the airflow channel of the pressurizing device 1 is connected to the air outlet.

[0113] It should be noted that when the range hood is in use, the negative pressure generated by the fan 21 acts on the smoke inlet, causing the air mixed with oil fumes in the cooking environment to pass through the smoke inlet and the smoke collection chamber 31 and then be discharged from the air outlet, thereby achieving the effect of removing the oil fumes generated during cooking and purifying the kitchen environment.

[0114] In summary, the fan 21 of the range hood can generate negative pressure, and the pressurizing device 1 further creates negative pressure near the nozzle 12. That is, the negative pressure effect is superimposed through the dual action of the fan 21 and the pressurizing device 1, which improves the smoke extraction effect of the range hood, prevents smoke from escaping to a certain extent, and helps to ensure the kitchen environment and the health of users.

[0115] The range hood of this embodiment has the advantages of the pressurization device 1 in Embodiment 1, which has been described in detail in Embodiment 1 and will not be repeated here.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A booster device, characterized in that, Includes a booster (11) and an airflow channel; An air hood (5) is provided at the air outlet of the range hood, and the air hood (5) is provided with an air outlet channel (51) that communicates with the air outlet. The pressurizing component (11) is provided with a nozzle (12), which is connected to the air outlet channel (51) through the airflow channel, and the nozzle (12) can spray airflow into the smoke collection hood (3) of the range hood; The extension direction of the air outlet channel (51) is consistent with the air outlet direction; The air outlet cover (5) is provided with a first opening (52) and a connecting channel. The connecting channel is connected to the air outlet channel (51) through the first opening (52), and the airflow channel is connected to the connecting channel. The first opening (52) is perpendicular to the extension direction of the air outlet channel (51); The connecting channel includes a first channel (53) that is connected to the first port (52), and a second port (54) is also provided on the air outlet hood (5). The first channel (53) is connected to the airflow channel through the second port (54). Among them, from the first port (52) to the second port (54), the extension direction of the first channel (53) changes back and forth.

2. The booster device according to claim 1, characterized in that, Multiple first ports (52) are provided, and multiple first ports (52) are arranged at intervals along the circumference of the air outlet channel (51); Multiple first channels (53) and multiple second ports (54) are provided, and multiple first channels (53), multiple second ports (54) and multiple first ports (52) correspond one to one.

3. The booster device according to claim 2, characterized in that, The communication channel also includes a second channel (55), and a plurality of second ports (54) are connected to the second channel (55), and the second channel (55) is connected to the airflow channel through a third port (56).

4. The booster device according to any one of claims 1-3, characterized in that, The smoke hood (3) is provided with a smoke collection chamber (31) and a smoke inlet communicating with the smoke collection chamber (31). The nozzle (12) can spray airflow into the smoke collection chamber (31). The pressurizing component (11) is located close to the smoke inlet, and the nozzle (12) is located on the side of the smoke inlet away from the smoke collection chamber (31).

5. The booster device according to claim 4, characterized in that, A filter screen (4) is provided at the smoke inlet. The filter screen (4) has multiple filter holes (41). The airflow ejected from the nozzle (12) can pass through the filter holes (41) and enter the smoke collection chamber (31).

6. The booster device according to claim 4, characterized in that, The pressurizing component (11) is provided with a pressurizing channel (13) that communicates with the airflow channel, and the nozzle (12) is connected to the pressurizing channel (13); The nozzle (12) is provided in multiple ways, and the multiple nozzles (12) are spaced apart along the extension direction of the pressurization channel (13); or, the nozzle (12) is an elongated hole extending along the extension direction of the pressurization channel (13).

7. The booster device according to claim 6, characterized in that, Along the extension direction of the pressurization channel (13), the pressurization component (11) is an annular tube extending circumferentially along the smoke inlet, and the nozzle (12) is disposed on one side near the center line of the annular tube.

8. The booster device according to claim 6, characterized in that, The pressurizing component (11) includes a body having a first end and a second end (14) disposed opposite to each other. The second end (14) is bent toward the first end to form the pressurizing channel (13) in the body. The first end and the second end (14) are alternately disposed to form the nozzle (12), and the first end is disposed toward the pressurizing channel (13) relative to the second end (14).

9. The booster device according to claim 8, characterized in that, The first end is provided with a guide part (15) that can guide the airflow in the pressurization channel (13) to the nozzle (12).

10. The booster device according to claim 9, characterized in that, A flow channel (16) communicating with the nozzle (12) is formed between the side of the body near the second end (14) and the guide part (15). The guide part (15) has a smooth transition surface on the side near the drainage channel (16), and / or the body has a smooth transition surface on the side near the drainage channel (16).

11. The booster device according to claim 10, characterized in that, Along the extension direction of the drainage channel (16), from the pressurization channel (13) to the nozzle (12), the cross section of the drainage channel (16) gradually decreases along its extension direction.

12. The booster device according to claim 6, characterized in that, The booster device (1) also includes an elbow (17) and a connecting pipe, and the air outlet is connected to the booster channel (13) through the elbow (17) and the connecting pipe.

13. The booster device according to claim 12, characterized in that, The range hood also includes a body (2) with a fan (21) inside, and the smoke collection hood (3) is located below the body (2); The connecting pipe includes a first pipe section (181) that penetrates the body (2) and a second pipe section (182) disposed in the smoke collection chamber (31). The air outlet is connected to the first pipe section (181), and the pressurization channel (13) is connected to the second pipe section (182). The first pipe segment (181) is a rectangular pipe, and along the extension direction perpendicular to the first pipe segment (181), the smaller outer wall surface of the first pipe segment (181) is projected onto the fan (21).

14. The booster device according to claim 13, characterized in that, The smoke collection hood (3) has two smoke inlets, and the pressurizing component (11) has two, with each pressurizing component (11) corresponding to one of the two smoke inlets. The booster device (1) also includes a three-way pipe (19), through which the connecting pipe and the booster channels (13) of the two booster components (11) are connected.

15. A range hood, characterized in that, It includes a body (2) with a fan (21) inside, a smoke hood (3) connected to the bottom of the body (2), and a pressurization device (1) as described in any one of claims 1-14. The smoke hood (3) is provided with a smoke collection chamber (31) and a smoke inlet communicating with the smoke collection chamber (31). The body (2) is provided with an air outlet. Air can pass through the smoke inlet and the smoke collection chamber (31) and then be discharged from the air outlet. The airflow channel of the booster device (1) is connected to the air outlet.

Images