Top-mounted range hood with axial fan

Abstract

This utility model relates to the field of range hood technology, specifically disclosing a top-mounted range hood with an axial fan. It includes a smoke collection hood and an axial fan. The smoke collection hood has a smoke extraction chamber, the outer bottom wall of which is inclined relative to the horizontal direction, and a smoke inlet is located at the bottom of the chamber. The axial fan is fixed inside the smoke extraction chamber and positioned above the smoke inlet. The smoke collection hood also has an exhaust port communicating with the smoke extraction chamber. This utility model uses an axial fan instead of a centrifugal impeller, which can reduce the manufacturing cost of the range hood.

Description

Technical Field

[0001] This utility model relates to the field of range hood technology, and in particular to a top-mounted range hood with an axial flow fan. Background Technology

[0002] Range hoods are essential appliances for removing fumes, steam, and odors from the kitchen environment. Most existing range hoods use centrifugal impellers as their primary power source. The centrifugal impeller creates negative pressure within the casing through high-speed rotation, drawing in fumes and expelling them through the casing. Due to the complex structure of the centrifugal impeller blades, the high requirements for material strength and dynamic balance precision, and the need for a dedicated casing and rectification structure, its unit cost accounts for a significant proportion of the total cost of the range hood, making it difficult to reduce manufacturing costs. Utility Model Content

[0003] This invention provides a top-mounted range hood with an axial fan, which replaces the centrifugal impeller and reduces the manufacturing cost of the range hood.

[0004] To solve the above problems, the present invention adopts the following technical solution:

[0005] An embodiment of this utility model provides a top-mounted range hood with an axial fan, including a smoke collection hood and an axial fan. The smoke collection hood is provided with a smoke extraction chamber, the outer bottom wall of which is inclined relative to the horizontal direction, and a smoke inlet is provided at the bottom of the smoke extraction chamber. The axial fan is fixed inside the smoke extraction chamber and located above the smoke inlet. The smoke collection hood is also provided with a smoke exhaust port communicating with the smoke extraction chamber.

[0006] In some embodiments, the exhaust port includes a first exhaust port disposed on the top surface of the smoke collection hood, the first exhaust port being located directly above the axial fan, and a first cover plate being detachably fixed to the smoke collection hood, the first cover plate covering the first exhaust port.

[0007] In some embodiments, the smoke exhaust port further includes a second smoke exhaust port disposed on the top surface of the smoke collection hood, the second smoke exhaust port being located in front of the first smoke exhaust port, and a second cover plate being detachably fixed to the smoke collection hood, the second cover plate covering the second smoke exhaust port.

[0008] In some embodiments, the smoke exhaust port includes a third smoke exhaust port disposed on the rear side of the smoke collection hood, and a third cover plate is detachably fixed to the smoke collection hood, the third cover plate covering the third smoke exhaust port.

[0009] In some embodiments, the smoke collection hood has an opening at the bottom and an inner cover is provided on the inner side of the smoke collection hood. The inner cover and the smoke collection hood enclose the smoke chamber, and the smoke inlet is located at the bottom of the inner cover.

[0010] In some embodiments, the two sidewalls of the inner cover along the length direction are spaced apart from the two sidewalls of the adjacent smoke collection hood along the length direction by a predetermined distance, and a buffer groove is formed between the two sidewalls of the inner cover along the length direction and the two sidewalls of the adjacent smoke collection hood along the length direction.

[0011] In some embodiments, the smoke inlet is connected to a guide cylinder that extends into the smoke chamber.

[0012] In some embodiments, the axial fan includes a motor and an impeller connected to the motor, a connecting rod is provided inside the smoke chamber, the two ends of the connecting rod are respectively connected to the two side walls of the smoke chamber, and the motor is fixedly connected to the connecting rod.

[0013] In some embodiments, an oil mesh is also fixed to the bottom of the smoking chamber, and the oil mesh covers the smoke inlet.

[0014] This utility model has at least the following beneficial effects: This utility model uses an axial flow fan as the power source for the range hood's exhaust, replacing the centrifugal impeller. The axial flow fan has a low cost, thus reducing the manufacturing cost of the range hood. At the same time, the outer bottom wall of the smoke chamber is inclined relative to the horizontal direction. This design can increase the area of ​​the smoke inlet, ensuring exhaust performance while reducing the size of the smoke collection hood. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a top-mounted range hood with an axial flow fan according to an embodiment of the present invention;

[0016] Figure 2 This is a cross-sectional schematic diagram of a top-mounted range hood with an axial flow fan according to an embodiment of the present invention.

[0017] Figure 3 This is a schematic diagram of the structure of a top-mounted range hood with an axial fan according to an embodiment of the present invention, with the air outlets completely covered by the cover plates.

[0018] Figure 4 This is a schematic diagram of the structure of a top-mounted range hood with an axial fan, according to an embodiment of the present invention, when all air outlets are open.

[0019] The attached figures are labeled as follows:

[0020] Smoke hood 100, check valve 101, second smoke outlet 102, third smoke outlet 103, smoke chamber 110, first cover plate 111, second cover plate 112, third cover plate 113, inner cover 120, bottom plate 121, side plate 122, buffer tank 130, oil mesh 140, guide cylinder 150;

[0021] Axial fan 200, motor 210, impeller 220, connecting rod 230. Detailed Implementation

[0022] This invention provides the following description with reference to the accompanying drawings to aid in a comprehensive understanding of the various embodiments of the invention as defined by the claims and their equivalents. The description includes various specific details to aid understanding, but these details should be considered exemplary only. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the various embodiments described herein without departing from the scope and spirit of the invention.

[0023] In the description of this utility model, the orientation descriptions, such as up, down, front, back, left, right, etc., are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0024] It should be understood that when one element (e.g., the first element) is “connected” to another element (e.g., the second element), the element may be directly connected to the other element, or there may be an intervening element (e.g., the third element) between the element and the other element.

[0025] An embodiment of this utility model provides a top-mounted range hood with an axial flow fan, such as... Figure 1-2 As shown, the system includes a fume hood 100 and an axial fan 200. The fume hood 100 has a fume extraction chamber 110, the outer bottom wall of which is inclined relative to the horizontal direction. The outer bottom wall of the fume extraction chamber 100 can form a preset angle with the horizontal direction, which is determined by those skilled in the art based on actual conditions, for example, it can be 20°. A fume inlet is provided at the bottom of the fume extraction chamber 110, communicating with the chamber. Due to the inclined outer bottom wall of the fume extraction chamber 110, the fume inlet is also inclined accordingly, allowing fumes to enter the fume extraction chamber 110 through the inlet. The axial fan 200 is fixed inside the fume extraction chamber 110 and located above the inlet. The fume hood 100 also has an exhaust port communicating with the fume extraction chamber 110. When the axial fan 200 is working, fumes enter the fume extraction chamber 110 through the inlet under the action of adsorption force and are finally discharged through the exhaust port.

[0026] This embodiment uses an axial flow fan 200 as the power source for the range hood's exhaust, replacing the centrifugal impeller commonly used in existing technologies. The axial flow fan 200 is low-cost, thus reducing the manufacturing cost of the range hood. Simultaneously, the outer bottom wall of the smoke extraction chamber 110 is inclined relative to the horizontal direction. This design increases the area of ​​the smoke inlet, ensuring exhaust performance while reducing the size of the smoke collection hood 100. Furthermore, the inclined outer bottom wall of the smoke extraction chamber 110 allows the fumes to flow upwards along its surface, making it easier for them to enter the smoke inlet.

[0027] In some embodiments, such as Figure 2-4 As shown, the exhaust port includes a first exhaust port located on the top surface of the smoke collection hood 100. The first exhaust port is located directly above the axial fan 200. A first cover plate 111 is detachably fixed on the smoke collection hood 100, and the first cover plate 111 covers the first exhaust port.

[0028] When the first cover plate 111 is opened, the first exhaust port is exposed, and the fumes in the smoke extraction chamber 110 can be discharged through the first exhaust port. The first exhaust port can be connected to an exhaust pipe or a check valve 101, which can prevent backflow of fumes. When the first cover plate 111 is closed, it can prevent external impurities from falling into the smoke extraction chamber 110 and also create conditions for exhausting fumes from other exhaust ports.

[0029] Furthermore, the smoke exhaust port also includes a second smoke exhaust port 102 disposed on the top surface of the smoke collection hood 100. The second smoke exhaust port 102 is located in front of the first smoke exhaust port. A second cover plate 112 is detachably fixed on the smoke collection hood 100, and the second cover plate 112 covers the second smoke exhaust port 102.

[0030] When the second cover plate 112 is opened, the second smoke exhaust port 102 is exposed, and the fumes in the smoke extraction chamber 110 can be discharged through the second smoke exhaust port 102. When the second cover plate 112 is closed, it can prevent external impurities from falling into the smoke extraction chamber 110 and also create conditions for other smoke exhaust ports to discharge smoke.

[0031] This embodiment increases the number of smoke exhaust vents, and the positions of the first smoke exhaust vent and the second smoke exhaust vent 102 are different, so that different smoke exhaust vents can be activated according to different smoke exhaust needs of users, making it convenient for users to use.

[0032] In some embodiments, such as Figure 2-4 As shown, the smoke exhaust port includes a third smoke exhaust port 103 located on the rear side of the smoke collection hood 100. A third cover plate 113 is detachably fixed to the smoke collection hood 100, and the third cover plate 113 covers the third smoke exhaust port 103.

[0033] When the third cover 113 is opened, the third exhaust port 103 is exposed, and the fumes in the smoke extraction chamber 110 can be discharged through the third exhaust port 103. When the third cover 113 is closed, it can prevent external impurities from falling into the smoke extraction chamber 110 and also create conditions for other exhaust ports to discharge fumes.

[0034] This embodiment further increases the number of smoke exhaust outlets, and the positions of the first smoke exhaust outlet, the second smoke exhaust outlet 102, and the third smoke exhaust outlet 103 are all different, so different smoke exhaust outlets can be activated according to different smoke exhaust needs of users, making it convenient for users to use.

[0035] In the above embodiments, the first cover plate 111, the second cover plate 112 and the third cover plate 113 can be detachably fixed to the smoke collection hood 100 by means of screws or other methods.

[0036] In some embodiments, such as Figure 1 and Figure 2 As shown, the smoke hood 100 has an opening at the bottom, forming a hood-like structure with a concave bottom. An inner cover 120 is provided inside the smoke hood 100, and the inner cover 120 and the smoke hood 100 enclose a smoke chamber 110, with the smoke inlet located at the bottom of the inner cover 120. Correspondingly, the outer bottom wall of the inner cover 120 is inclined.

[0037] In this embodiment, the smoke extraction chamber 110 is formed by the inner cover 120 and the smoke collection hood 100. Different smoke extraction chambers 110 can be formed by different inner covers 120, so as to flexibly control the volume of the smoke extraction chamber 110, making the entire range hood smaller and meeting the needs of users for different specifications of products.

[0038] Furthermore, the two sidewalls of the inner cover 120 along its length are spaced apart from the two sidewalls of the adjacent smoke hood 100 along its length by a predetermined distance, and a buffer groove 130 is formed between the two sidewalls of the inner cover 120 along its length and the two sidewalls of the adjacent smoke hood 100 along its length.

[0039] Some of the cooking fumes can enter the buffer trough 130, and then, under the action of airflow, enter the smoke extraction chamber 110 from the smoke inlet. The buffer trough 130 can reduce the escape of cooking fumes and improve the smoke extraction effect.

[0040] In this embodiment, the inner cover 120 may include a base plate 121 and two side plates 122. The two side plates 122 are respectively connected to both ends of the base plate 121 along its length. The base plate 121, the two side plates 122, and the smoke collection hood 100 enclose a smoking chamber 110. The base plate 121 may be inclined, and the smoke inlet is correspondingly provided on the base plate 121. The two side plates 122 respectively form buffer grooves 130 between the two side walls along the length of the adjacent smoke collection hood 100.

[0041] In some embodiments, such as Figure 2As shown, the smoke inlet is connected to a guide tube 150, which extends into the smoke chamber 110. This guide tube 150 can guide the oil fumes to flow along the guide tube 150 into the smoke chamber 110, avoiding airflow turbulence, and allowing the oil fumes to smoothly enter the smoke chamber 110.

[0042] Furthermore, the axial direction of the axial fan 200 can be coaxial with the axial direction of the guide cylinder 150, making it easier for oil fumes to enter the smoke chamber 110 along the guide cylinder 150.

[0043] In some embodiments, such as Figure 2 As shown, the axial fan 200 includes a motor 210 and an impeller 220 connected to the motor 210. A connecting rod 230 is provided inside the smoke chamber 110, and the two ends of the connecting rod 230 are respectively connected to the two side walls of the smoke chamber 110. The motor 210 is fixedly connected to the connecting rod 230. In this embodiment, the entire axial fan 200 is fixed by the connecting rod 230.

[0044] In some embodiments, such as Figure 1 As shown, an oil mesh 140 is also fixed at the bottom of the smoking chamber. The oil mesh 140 covers the smoke inlet and can intercept grease, reducing the amount of grease entering the smoking chamber 110.

[0045] The terms and words used in the foregoing description and claims are not limited to their literal meaning, but are merely used by the applicant to enable a clear and consistent understanding of the present invention. Therefore, those skilled in the art should understand that the foregoing description of various embodiments of the present invention is for illustrative purposes only, and not intended to limit the present invention as defined by the appended claims and their equivalents.

Claims

1. A top suction type range hood having an axial flow fan, characterized by: The device includes a smoke collection hood and an axial fan. The smoke collection hood has a smoke extraction chamber with its outer bottom wall inclined relative to the horizontal direction and a smoke inlet at the bottom. The axial fan is fixed inside the smoke extraction chamber and located above the smoke inlet. The smoke collection hood also has a smoke exhaust port communicating with the smoke extraction chamber.

2. The top suction type range hood having an axial flow fan according to claim 1, characterized by: The exhaust port includes a first exhaust port disposed on the top surface of the smoke collection hood. The first exhaust port is located directly above the axial flow fan. A first cover plate is detachably fixed to the smoke collection hood, and the first cover plate covers the first exhaust port.

3. The top suction type range hood having an axial flow fan according to claim 2, characterized by: The smoke exhaust port also includes a second smoke exhaust port disposed on the top surface of the smoke collection hood. The second smoke exhaust port is located in front of the first smoke exhaust port. A second cover plate is detachably fixed on the smoke collection hood, and the second cover plate covers the second smoke exhaust port.

4. The top suction type range hood having an axial flow fan according to claim 1, characterized by: The smoke exhaust port includes a third smoke exhaust port located on the rear side of the smoke collection hood. A third cover plate is detachably fixed to the smoke collection hood, and the third cover plate covers the third smoke exhaust port.

5. The top-mounted range hood with an axial fan according to any one of claims 1-4, characterized in that: The smoke collection hood has an opening at the bottom and an inner cover is provided on the inside of the smoke collection hood. The inner cover and the smoke collection hood enclose the smoke chamber, and the smoke inlet is located at the bottom of the inner cover.

6. The top extraction hood with an axial fan according to claim 5, characterized in that: The two side walls along the length of the inner cover are spaced apart from the two side walls along the length of the adjacent smoke collection hood by a predetermined distance, and a buffer groove is formed between the two side walls along the length of the inner cover and the two side walls along the length of the adjacent smoke collection hood.

7. The top extraction range hood having an axial flow fan according to any one of claims 1 to 4, characterized in that: The smoke inlet is connected to a guide cylinder, which extends into the smoke chamber.

8. The top extraction range hood having an axial flow fan according to any one of claims 1 to 4, characterized in that: The axial fan includes a motor and an impeller connected to the motor. A connecting rod is provided inside the smoke chamber, and the two ends of the connecting rod are respectively connected to the two side walls of the smoke chamber. The motor is fixedly connected to the connecting rod.

9. The top extraction range hood having an axial flow fan according to any one of claims 1 to 4, characterized in that: An oil mesh is also fixed at the bottom of the smoking chamber, and the oil mesh covers the smoke inlet.

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