Wind shell assembly and desktop range hood

Abstract

The utility model discloses a wind shell assembly and a table top range hood, and belongs to the technical field of range hoods. The fan cover shell is provided with a containing cavity and an air inlet hole, and the air inlet hole is used for inputting air into the containing cavity so that high pressure can be formed in the containing cavity. The first shell is provided with an air exhaust channel; the second shell is provided with an exhaust channel, and the first shell and the second shell are arranged in the containing cavity and communicate with the two opposite ends of the air cover shell correspondingly. The outer diameter of the first shell is smaller than the inner diameter of the second shell, and the first shell extends into the second shell; a first annular air outlet is formed between the part, extending into the second shell, of the first shell and the second shell, and the first annular air outlet can output air in the containing cavity towards the exhaust channel, so that negative pressure is generated at the end, far away from the exhaust channel, of the air exhaust channel to suck oil smoke and the oil smoke flows to the exhaust channel. By optimizing the design of the air duct, the oil smoke suction efficiency of the table top range hood and the user experience can be improved.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to a fan housing assembly and a desktop range hood. Background Technology

[0002] As people's living standards improve and dining options become increasingly diverse, tabletop cooking (such as hot pot and barbecue) is becoming more and more common. However, tabletop cooking generates a large amount of oil fumes and odors, which not only pollute the air and affect the dining environment but may also harm human health. Therefore, how to effectively solve the problem of oil fume in tabletop cooking has become an urgent issue to be addressed.

[0003] Most existing desktop range hoods use a traditional fan structure with the fan blades directly exposed. During prolonged use, grease and grime easily adhere to the fan blade surface, leading to a buildup of oil and dirt. This not only reduces the range hood's fume extraction efficiency but also affects its lifespan. Furthermore, users need to frequently disassemble and clean the fan blades, a cumbersome process that causes significant inconvenience.

[0004] To overcome the drawback of exposed fan blades in traditional desktop range hoods, some designs have attempted to borrow the structure of bladeless fans. However, bladeless fans are designed for blowing air, and their annular air outlets are typically located on the exhaust end face of the casing. While this design avoids the problem of exposed blades to some extent, its direct application to desktop range hoods results in insufficient suction power, failing to meet the demands of efficient fume extraction. Utility Model Content

[0005] The purpose of this invention is to provide a fan housing assembly and a desktop range hood. By optimizing the air duct design, it solves problems such as exposed fan blades and insufficient suction power in the prior art, thereby improving the oil fume extraction efficiency and user experience of the desktop range hood.

[0006] In a first aspect, this utility model provides a wind housing assembly, comprising:

[0007] The wind cover has a receiving cavity and an air inlet, the air inlet being used to input air into the receiving cavity to create a high pressure in the receiving cavity;

[0008] The first housing is equipped with an air extraction channel;

[0009] The second housing has an exhaust channel. The first housing and the second housing are located in the receiving cavity and are respectively connected to the opposite ends of the hood. The outer diameter of the first housing is smaller than the inner diameter of the second housing. The first housing extends into the second housing. The suction channel and the exhaust channel are interconnected. A first annular air outlet is formed between the portion of the first housing that extends into the second housing and the second housing. The first annular air outlet can output air from the receiving cavity toward the exhaust channel, so that the end of the suction channel away from the exhaust channel generates negative pressure to absorb oil fumes and flow them toward the exhaust channel.

[0010] The fan housing assembly provided by this utility model forms a first annular air outlet through the cooperation of a first housing and a second housing. The main reason for this design is that the first annular air outlet is closer to the suction end face compared to traditional air outlets. This design results in a smaller distance between the air outlet and the suction channel, and a shorter airflow path between the suction channel and the air outlet, thereby reducing energy loss and significantly enhancing suction power. Furthermore, the closer proximity to the suction end face allows for more direct utilization of the negative pressure generated by the suction channel, enabling the airflow to accelerate and be expelled rapidly in a short time, thus improving the overall efficiency of fume extraction.

[0011] Furthermore, a first airflow shroud is provided at the end of the second housing away from the first housing. The first airflow shroud is provided with a diffusion channel that communicates with the exhaust channel. The inner diameter of the diffusion channel increases progressively from the point of contact with the exhaust channel to the point of contact with the point of contact with the exhaust channel.

[0012] By adopting the above technical solution, a first airflow shroud is provided at the end of the second shell away from the first shell, and a diffusion channel is designed therein. This structure allows the airflow to further diffuse through the diffusion channel after passing through the exhaust channel, which is beneficial to the diffusion and uniform distribution of the airflow.

[0013] Furthermore, the first airflow shroud is also provided with a second annular air outlet around the exhaust channel, and the second annular air outlet can output the air containing the cavity along the exhaust direction of the exhaust channel.

[0014] By adopting the above technical solution, a second annular air outlet is set on the first airflow hood, which can output airflow away from the exhaust channel. This design can not only further optimize the airflow distribution, but also reduce the retention of oil fumes in the fan housing assembly by assisting air outlet, thereby improving the overall smoke exhaust efficiency.

[0015] Furthermore, the number of the second annular air outlets is at least two, and the at least two second annular air outlets are axially spaced on the first airflow shroud.

[0016] By adopting the above technical solution and setting at least two second annular air outlets, spaced apart along the axial direction, airflow can be distributed more evenly, further improving the stability and uniformity of the airflow. This design can effectively avoid the problem of excessively strong or weak local airflow, thus improving the overall smoke extraction effect.

[0017] Furthermore, the first airflow hood is also provided with a plurality of air guide grooves, which are circumferentially spaced between two adjacent second annular air outlets.

[0018] By adopting the above technical solution, multiple air guide slots are set on the first airflow shroud, and the air guide slots are circumferentially spaced between adjacent second annular air outlets. This design can further refine the airflow path, making the airflow within the air casing assembly more orderly, and reducing airflow turbulence and energy loss.

[0019] Furthermore, it also includes a filter screen, and the end of the first housing facing away from the second housing is provided with a mounting groove around the air extraction channel, and the filter screen is disposed in the mounting groove.

[0020] By adopting the above technical solution, a filter screen is set at the end of the first housing facing away from the second housing, which can effectively filter the oil fumes entering the air extraction channel, thereby purifying the air, reducing the emission of oil fumes and odors, improving indoor air quality, and providing users with a healthier and more comfortable user environment.

[0021] Furthermore, it also includes a semiconductor cooling chip, which is disposed between the filter and the bottom of the mounting groove.

[0022] By adopting the above technical solution, the semiconductor cooling chip is placed between the filter screen and the fan casing, which can effectively reduce the temperature of the filter screen, thereby accelerating the condensation of oil fumes on the filter screen, improving the purification and filtration effect of the filter screen, and ensuring the efficient operation of the range hood.

[0023] Furthermore, an oil collection port is provided on the side wall of the mounting groove, which is used to recover the oil filtered by the filter screen.

[0024] By adopting the above technical solution, the oil collection port design can collect oil in a centralized manner. Users only need to clean the oil collected in the oil collection port periodically, without the need for frequent disassembly and cleaning of the fan housing assembly, which reduces maintenance costs and improves user experience.

[0025] Furthermore, a second airflow shroud is provided at the end of the first housing facing away from the second housing. The second airflow shroud is provided with an expansion port that communicates with the air extraction channel. The inner diameter of the expansion port increases progressively from near the air extraction channel to far away from the air extraction channel.

[0026] By adopting the above technical solution, a second airflow shroud is set at the end of the first housing facing away from the second housing, and an airflow diffuser is designed, which can effectively guide the air intake direction, optimize the air intake effect, and improve the air intake efficiency of the air extraction channel.

[0027] Secondly, the present invention provides a desktop range hood, including any of the aforementioned fan housing components.

[0028] As can be seen from the above, the fan housing assembly provided by this utility model forms a first annular air outlet through the cooperation of the first housing and the second housing. The main reason for this is that the first annular air outlet is closer to the suction end face compared to a traditional air outlet. This design results in a smaller distance between the air outlet and the suction channel, and a shorter airflow path between the suction channel and the air outlet, thereby reducing energy loss and significantly enhancing suction power. Furthermore, the closer proximity to the suction end face allows for more direct utilization of the negative pressure generated by the suction channel, enabling the airflow to accelerate rapidly and be expelled quickly, thus improving the overall efficiency of fume extraction.

[0029] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing embodiments of this application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a wind shell assembly proposed in this utility model.

[0031] Figure 2 This is a cross-sectional structural diagram of a wind housing assembly proposed in this utility model.

[0032] Figure 3 This is an exploded structural diagram of a wind housing assembly proposed in this utility model.

[0033] Figure 4 This is a schematic diagram of the structure of a desktop range hood proposed in this utility model.

[0034] In the attached diagram: 100, fan housing; 110, receiving cavity; 120, air inlet; 200, first housing; 210, air extraction channel; 220, mounting groove; 221, oil collection port; 230, second airflow hood; 231, diffuser port; 300, second housing; 310, exhaust channel; 320, first annular air outlet; 330, first airflow hood; 331, diffusion channel; 332, second annular air outlet; 333, air guide groove; 400, filter screen; 500, semiconductor cooling chip. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0037] The fan housing component disclosed in this utility model is mainly used in desktop cooking scenarios. By optimizing the air duct design, it solves problems such as exposed fan blades and insufficient suction power in the prior art, thereby improving the oil fume extraction efficiency and user experience of the desktop range hood.

[0038] Reference Appendix Figure 1 Appendix Figure 2 Appendix Figure 3 In one embodiment, the wind housing assembly includes a wind shield 100, a first housing 200, and a second housing 300. The hood 100 is provided with a receiving cavity 110 and an air inlet 120. The air inlet 120 is used to input air into the receiving cavity 110, thereby creating a high pressure in the receiving cavity 110. The first housing 200 is provided with an exhaust channel 210. The second housing 300 is provided with an exhaust channel 310. The first housing 200 and the second housing 300 are located in the receiving cavity 110 and are respectively connected to the opposite ends of the ventilation hood 100. The outer diameter of the first housing 200 is smaller than the inner diameter of the second housing 300. The first housing 200 extends into the second housing 300. The exhaust channel 210 and the exhaust channel 310 are interconnected. A first annular air outlet 320 is formed between the part of the first housing 200 that extends into the second housing 300 and the second housing 300. The first annular air outlet 320 can output air from the receiving cavity 110 toward the exhaust channel 310, so that the end of the exhaust channel 210 away from the exhaust channel 310 generates negative pressure to absorb oil fumes and flow to the exhaust channel 310.

[0039] As can be seen from the above, the fan housing assembly provided by this utility model forms a first annular air outlet 320 through the cooperation of the first housing 200 and the second housing 300. The main reason for this is that the first annular air outlet 320 is closer to the suction end face than a traditional air outlet. This design makes the distance between the air outlet and the suction channel 210 smaller, and the flow path of the airflow between the suction channel 210 and the air outlet shorter, thereby reducing energy loss and significantly enhancing suction power. In addition, the design that is closer to the suction end face can more directly utilize the negative pressure generated by the suction channel 210, so that the airflow can be rapidly accelerated and discharged in a short time, thereby improving the overall oil fume extraction efficiency.

[0040] In one embodiment, the second housing 300 is provided with a first airflow shroud 330 at the end away from the first housing 200. The first airflow shroud 330 is provided with a diffusion channel 331 that communicates with the exhaust channel 310. The inner diameter of the diffusion channel 331 increases from the point of proximity to the exhaust channel 310 to the point of distance from the exhaust channel 310.

[0041] By adopting the above technical solution, a first airflow shroud 330 is provided at the end of the second housing 300 away from the first housing 200, and a diffusion channel 331 is designed therein. This structure allows the airflow to be further diffused through the diffusion channel 331 after passing through the exhaust channel 310, which is beneficial to the diffusion and uniform distribution of the airflow.

[0042] In one embodiment, the first airflow shroud 330 is further provided with a second annular air outlet 332 around the exhaust channel 310, and the second annular air outlet 332 can output air containing the cavity 110 in the direction of exhaust from the exhaust channel 310.

[0043] By adopting the above technical solution, a second annular air outlet 332 is provided on the first airflow hood 330, which can output airflow away from the exhaust channel 310. This design can not only further optimize the airflow distribution, but also reduce the retention of oil fumes in the air casing assembly by assisting air outlet, thereby improving the overall smoke exhaust efficiency.

[0044] In one embodiment, the number of second annular air outlets 332 is at least two, and at least two second annular air outlets 332 are axially spaced on the first airflow hood 330.

[0045] By adopting the above technical solution, at least two second annular air outlets 332 are set and distributed at intervals along the axial direction, which can distribute the airflow more evenly and further improve the stability and uniformity of the airflow. This design can effectively avoid the problem of excessively strong or weak local airflow and improve the overall smoke extraction effect.

[0046] In one embodiment, the first airflow hood 330 is further provided with a plurality of air guide grooves 333, which are circumferentially spaced between two adjacent second annular air outlets 332.

[0047] By adopting the above technical solution, multiple air guide grooves 333 are provided on the first airflow shroud 330, and the air guide grooves 333 are circumferentially spaced between adjacent second annular air outlets 332. This design can further refine the airflow path, making the airflow within the air casing assembly more orderly, and reducing airflow turbulence and energy loss.

[0048] In one embodiment, a filter screen 400 is also included. The end of the first housing 200 facing away from the second housing 300 is provided with a mounting groove 220 around the air extraction channel 210, and the filter screen 400 is disposed in the mounting groove 220.

[0049] By adopting the above technical solution, a filter 400 is provided at the end of the first housing 200 facing away from the second housing 300, which can effectively filter the oil fumes entering the exhaust channel 210, thereby purifying the air, reducing the emission of oil fumes and odors, improving indoor air quality, and providing users with a healthier and more comfortable environment.

[0050] In one embodiment, a thermoelectric cooler 500 is also included, which is disposed between the filter 400 and the bottom of the mounting groove 220.

[0051] By adopting the above technical solution, the semiconductor cooling chip 500 is placed between the filter screen 400 and the mounting groove 220, which can effectively reduce the temperature of the filter screen 400, thereby accelerating the condensation of oil fumes on the filter screen 400, improving the purification and filtration effect of the filter screen 400, and ensuring the efficient operation of the range hood.

[0052] In one embodiment, an oil collection port 221 is also provided on the side wall of the mounting groove 220, which is used to recover the oil filtered by the filter screen 400.

[0053] By adopting the above technical solution, the oil collection port 221 can collect oil in a centralized manner. Users only need to clean the oil collected by the oil collection port 221 periodically, without having to frequently disassemble and clean the fan housing assembly, which reduces maintenance costs and improves user experience.

[0054] In one embodiment, the first housing 200 is further provided with a second airflow hood 230 at the end facing away from the second housing 300. The second airflow hood 230 is provided with an expansion port 231 that communicates with the air extraction channel 210. The inner diameter of the expansion port 231 increases from near the air extraction channel 210 to far away from the air extraction channel 210.

[0055] By adopting the above technical solution, a second airflow shroud 230 is provided at the end of the first housing 200 facing away from the second housing 300, and an airflow diffuser 231 is designed, which can effectively guide the air intake direction, optimize the air intake effect, and improve the air intake efficiency of the air extraction channel 210.

[0056] Reference Appendix Figure 4 The present invention also provides a desktop range hood, including the fan housing assembly of any of the above embodiments.

[0057] Specifically, the desktop range hood is equipped with a fan assembly that can output air towards the air inlet 120.

[0058] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0059] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. A wind shell assembly, characterized by, The utility model relates to a smoke exhaust device, comprising: a wind cover shell (100) provided with a containing cavity (110) and an air inlet hole (120) for inputting air into the containing cavity (110) to form high pressure in the containing cavity (110); a first shell (200) provided with an air extraction channel (210); a second shell (300) provided with an air exhaust channel (310), the first shell (200) and the second shell (300) are arranged in the containing cavity (110) and communicate with opposite ends of the wind cover shell (100) respectively; the outer diameter of the first shell (200) is smaller than the inner diameter of the second shell (300), the first shell (200) extends into the second shell (300), the air extraction channel (210) and the air exhaust channel (310) communicate with each other; and a first annular air outlet (320) is formed between the part of the first shell (200) extending into the second shell (300) and the second shell (300), the first annular air outlet (320) can output the air in the containing cavity (110) towards the air exhaust channel (310), so that the end of the air extraction channel (210) far away from the air exhaust channel (310) generates negative pressure to suck oil smoke and flow to the air exhaust channel (310).

2. A wind shell assembly according to claim 1, wherein, The end of the second shell (300) far away from the first shell (200) is provided with a first air flow cover (330), the first air flow cover (330) is provided with a diffusion channel (331) communicating with the air exhaust channel (310), the inner diameter of the diffusion channel (331) increases from the air exhaust channel (310) to the end far away from the air exhaust channel (310).

3. A wind shell assembly according to claim 2, wherein, The first air flow cover (330) is also provided with a second annular air outlet (332) around the air exhaust channel (310), the second annular air outlet (332) can output the air in the containing cavity (110) along the direction of the air exhaust of the air exhaust channel (310).

4. A wind shell assembly according to claim 3, wherein, The number of the second annular air outlets (332) is at least two, and the at least two second annular air outlets (332) are arranged on the first air flow cover (330) in an axial direction.

5. A wind shell assembly according to claim 4, wherein, The first air flow cover (330) is also provided with a plurality of air guide grooves (333), and the plurality of air guide grooves (333) are arranged between adjacent two second annular air outlets (332) in a circumferential direction.

6. A wind shell assembly according to claim 1, wherein, The utility model also comprises a filter screen (400), the end of the first shell (200) far away from the second shell (300) is provided with a mounting groove (220) around the air extraction channel (210), and the filter screen (400) is arranged in the mounting groove (220).

7. A wind shell assembly according to claim 6, wherein, The utility model also comprises a semiconductor refrigeration sheet (500), and the semiconductor refrigeration sheet (500) is arranged between the filter screen (400) and the bottom of the mounting groove (220).

8. A wind shell assembly according to claim 6, wherein, The sidewall of the mounting groove (220) is also provided with an oil collecting port (221), and the oil collecting port (221) is used for recycling the oil filtered by the filter screen (400).

9. A wind shell assembly according to claim 1, wherein, The first shell (200) is further provided with a second air flow cover (230) at one end away from the second shell (300), the second air flow cover (230) is provided with an air flow expansion opening (231) in communication with the air suction channel (210), and the inner diameter of the air flow expansion opening (231) is arranged in an increasing manner from the air suction channel (210) to away from the air suction channel (210).

10. A table top smoke machine characterized by, The wind shell assembly comprises the wind shell assembly according to any one of claims 1-9.

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