Range hood

Abstract

The utility model discloses a range hood. The range hood comprises a shell, an air collecting box and a baffle, when the range hood runs, negative pressure generated by the smoke exhaust fan in the air collection cavity enables external airflow to enter the smoke collection cavity through the air suction opening, and the external airflow pushes the baffle upwards when flowing through the air suction opening, so that the baffle opens the air suction opening, and the range hood can normally suck oil smoke; when the smoke exhaust fan stops running, the baffle resets under the gravity of the baffle and shields the air suction opening, and when oil dirt accumulated on the part, aligned to the air suction opening, of the cover plate forms oil drops, the oil drops are received by the baffle and do not drop out of the range hood through the air suction opening, so that the cleanliness of a cooking bench can be guaranteed, and the influence of the range hood on the sanitary environment of a kitchen is prevented; the use effect of the range hood is improved.

Description

Technical Field

[0001] This utility model relates to the field of smoke hood technology, specifically to a smoke hood. Background Technology

[0002] For range hoods with top-mounted air vents, part of the cover plate above the vent will be directly opposite it. After the fumes enter the range hood from the top-mounted air vent, some of the fumes will accumulate on the part of the cover plate that is directly opposite the vent, causing the oil to adhere and accumulate on this part of the cover plate, forming grease. Over time, the grease will easily gather into oil droplets and fall directly from the top-mounted air vent onto the stovetop, affecting the performance of the range hood. Utility Model Content

[0003] The purpose of this utility model is to provide a range hood that solves the above-mentioned technical problems.

[0004] The smoke hood proposed in this utility model includes a housing, an air collection box, and a baffle. The housing has an air intake panel, a cover plate, and an air collection cavity located between the air intake panel and the cover plate. The air intake panel has an air intake port, and the cover plate has a connection port. The width of the air intake port in the left-right direction is greater than the width of the connection port. The air collection box is connected to the connection port and located above the cover plate. The air collection box communicates with the air collection cavity and has an exhaust fan inside. The baffle is rotatably connected to the air intake panel. When the exhaust fan is running, the exhaust fan creates a negative pressure in the air collection cavity. Under the action of the negative pressure, the baffle rotates and opens the air intake port. When the exhaust fan stops running, the baffle returns to its original position under its own weight and at least covers the part of the air intake port that is aligned with the cover plate.

[0005] According to one embodiment of the present invention, a limiting plate is provided on the baffle. When the baffle opens the air intake, the limiting plate limits the flipping angle of the baffle so that the flipping angle of the baffle is less than 90 degrees.

[0006] According to one embodiment of the present invention, the baffle is further provided with a connecting plate. The baffle and the limiting plate are respectively connected to the front and rear edges of the connecting plate. The baffle extends upward and the limiting plate extends downward. When the baffle flips under the negative pressure in the air collecting cavity, the lower edge of the limiting plate gradually approaches the air suction panel. When the lower edge of the limiting plate contacts the air suction panel, the baffle flips into place.

[0007] According to one embodiment of the present invention, the included angle between the connecting plate and the limiting plate is greater than 90 degrees and less than 120 degrees.

[0008] According to one embodiment of the present invention, a rotating seat is provided on the upper side of the suction panel, and connecting pieces are connected to both sides of the connecting plate. The connecting pieces are folded upward to form a connecting seat, and the connecting seat is rotatably connected to the rotating seat.

[0009] According to one embodiment of the present invention, the length of the baffle in the left-right direction is greater than the length of the air intake. When the exhaust fan stops running, the baffle blocks the entire air intake.

[0010] According to one embodiment of the present invention, when the baffle opens the air intake, its projection is located outside the air intake.

[0011] According to one embodiment of the present invention, at least a portion of the baffle is arc-shaped, with the convex surface of the arc facing the air intake.

[0012] According to one embodiment of the present invention, the upper edge of the baffle is further provided with a guide plate, and the angle between the surface of the guide plate away from the air inlet and the surface of the baffle away from the air inlet is greater than 90 degrees and less than 180 degrees.

[0013] According to one embodiment of the present invention, the smoke exhaust fan is inclinedly arranged in the air collection box, the air intake side of the smoke exhaust fan is located in front of the air intake, and the baffle is rotatably connected to the rear side of the air intake.

[0014] Compared with the prior art, the smoke hood of this utility model has the following advantages:

[0015] When the range hood of this invention is running, the negative pressure generated by the exhaust fan in the air collection chamber forces external airflow into the chamber through the air inlet. As the airflow passes through the air inlet, it pushes the baffle upwards, opening the air inlet and allowing the range hood to properly extract cooking fumes. When the exhaust fan stops running, the baffle returns to its original position under its own weight, blocking the air inlet. Oil residue accumulated on the part of the cover plate aligned with the air inlet forms droplets that are caught by the baffle, preventing them from dripping outside the range hood and ensuring a clean cooktop. This prevents the range hood from negatively impacting the kitchen's hygiene and improves its performance. The baffle also shields the air collection chamber, preventing users from directly seeing its interior through the air inlet. Over time, if oil residue accumulates on the baffle, its proximity to the air inlet allows users to clean it through the inlet, keeping the outward-facing side of the baffle clean and maintaining the range hood's clean and tidy appearance. The baffle opens the air intake by the negative pressure created by the exhaust fan in the smoke collection chamber, and closes the air intake by its own gravity. No additional drive mechanism is needed. This solves the problem of oil dripping from the cover plate and allows for reasonable control of the increased structural costs. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the smoke hood of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the smoke hood of this utility model from another direction;

[0018] Figure 3 This is a structural cross-sectional view of the smoke hood of this utility model;

[0019] Figure 4 This is a structural cross-sectional view of another embodiment of the smoke hood of this utility model;

[0020] Figure 5 for Figure 4 A magnified view of a portion of point A in the middle.

[0021] In the diagram: 1. Shell, 11. Suction panel, 111. Suction port, 112. Rotary seat, 12. Cover plate, 13. Air collection chamber, 2. Air collection box, 3. Smoke exhaust fan, 4. Baffle, 41. Limiting plate, 42. Connecting plate, 43. Connecting piece, 44. Air guide plate.

[0022] The implementation and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0023] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0024] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0025] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0026] To further understand the content, features, and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0027] This utility model discloses a smoke hood. Please refer to [link / reference]. Figures 1 to 5 The present invention relates to a range hood comprising a housing 1, an air collection box 2, and a baffle 4. The housing 1 has an air intake panel 11, a cover plate 12, and an air collection cavity 13 located between the air intake panel 11 and the cover plate 12. The air intake panel 11 is provided with an air intake 111, and the cover plate 12 is provided with a connection port. The width of the air intake 111 in the left-right direction is greater than the width of the connection port. The air collection box 2 is connected to the connection port and located above the cover plate 12. The air collection box 2 communicates with the air collection cavity 13, and an exhaust fan 3 is provided inside the air collection box 2. The baffle 4 is rotatably connected above the air intake panel 11. When the exhaust fan 3 is running, the exhaust fan 3 creates a negative pressure in the air collection cavity 13. Under the action of the negative pressure, the baffle 4 rotates and opens the air intake 111. When the exhaust fan 3 stops running, the baffle 4 returns to its original position under its own weight and at least covers the part of the air intake 111 that is aligned with the cover plate 12.

[0028] In this embodiment, the cover plate 12 is located above the suction panel 11, that is, above the suction port 111. The width of the suction port 111 in the left-right direction is greater than the width of the connection port, so the two ends of the suction port 111 are directly opposite the cover plate 12. The baffle 4 is rotatably installed in the air collection chamber 13. The rotation axis of the baffle 4 extends in the left-right direction, that is, the baffle 4 can be flipped up and down.

[0029] The air intake 111 is connected to the air collection chamber 13. When the exhaust fan 3 is running, the negative pressure generated by the exhaust fan 3 in the air collection chamber 13 causes the external airflow to enter the smoke collection chamber through the air intake 111. When the external airflow flows through the air intake 111, it pushes the baffle 4 upward, causing the baffle 4 to open the air intake 111, so that the range hood can normally extract oil fumes. When the exhaust fan 3 stops running, the baffle 4 returns to its original position under its own weight, blocking the air intake 111. When the grease accumulated on the part of the cover plate 12 that is aligned with the air intake 111 forms oil droplets, they are caught by the baffle 4 and will not drip outside the range hood through the air intake 111, thus ensuring the cleanliness of the stove and preventing the range hood from affecting the hygiene of the kitchen, thereby improving the performance of the range hood.

[0030] The baffle 4 can also shield the air collection chamber 13, preventing users from directly seeing the inside of the air collection chamber 13 through the air intake 111. After long-term use, if oil and smoke accumulate on the baffle 4, since the baffle 4 is close to the air intake 111, the user can clean the baffle 4 through the air intake 111, keeping the outward-facing side of the baffle 4 clean, thus keeping the range hood clean and tidy.

[0031] The baffle 4 opens the air intake 111 by relying on the negative pressure formed in the smoke collection chamber by the smoke exhaust fan 3, and closes the air intake 111 by relying on its own gravity. No additional drive mechanism is needed. While solving the problem of oil dripping from the cover 12, the increased structural cost can be reasonably controlled.

[0032] The smoke hood of this utility model, such as Figure 5 As shown, a limiting plate 41 is provided on the baffle 4. When the baffle 4 opens the air intake 111, the limiting plate 41 limits the rotation angle of the baffle 4, ensuring that the rotation angle is less than 90 degrees. When the baffle 4 rotates upward under the action of airflow to the position where the air intake 111 is open, the limiting plate 41 abuts against the corresponding limiting structure to restrict the baffle 4 from continuing to rotate, thereby preventing the baffle 4 from failing to reset due to excessive rotation. When the exhaust fan 3 is turned off, since the rotation angle of the baffle 4 is less than 90 degrees, the baffle 4 can rotate downward under the action of gravity, thus allowing the baffle 4 to close the air intake 111 again. Therefore, it can be ensured that the baffle 4 can close the air intake 111 again after each opening, thus ensuring the application effect of the baffle 4.

[0033] The smoke hood of this utility model, such as Figure 5 As shown, the baffle 4 is also provided with a connecting plate 42. The baffle 4 and the limiting plate 41 are respectively connected to the front and rear edges of the connecting plate 42. The baffle 4 extends upward and the limiting plate 41 extends downward. When the baffle 4 flips under the negative pressure in the air collecting cavity 13, the lower edge of the limiting plate 41 gradually approaches the suction panel 11. When the lower edge of the limiting plate 41 contacts the suction panel 11, the baffle 4 flips into place.

[0034] The rotation axis of the baffle 4 is located behind the air intake 111. When the baffle 4 is flipped to the position where the air intake 111 is open, the baffle 4 is located behind the air intake 111. At this time, the bottom edge of the baffle 4 is connected to the front edge of the connecting plate 42, and the top edge of the limiting plate 41 is connected to the rear edge of the connecting plate 42. The lower edge of the limiting plate 41 gradually approaches the upper surface of the air intake panel 11 as the baffle 4 opens the air intake 111. Finally, the lower edge of the limiting plate 41 abuts against the upper surface of the air intake panel 11, so that the baffle 4 cannot continue to rotate backward, thereby limiting the baffle 4.

[0035] In this utility model of a range hood, the included angle between the connecting plate 42 and the limiting plate 41 is greater than 90 degrees and less than 120 degrees. Thus, the smaller the included angle between the connecting plate 42 and the limiting plate 41, the earlier the limiting plate 41 contacts the suction panel 11 during the opening of the baffle 4's suction port 111, and the smaller the rotatable angle of the baffle 4 when opening the suction port 111. Conversely, the larger the included angle between the connecting plate 42 and the limiting plate 41, the later the limiting plate 41 contacts the suction panel 11 during the opening of the baffle 4's suction port 111, and the larger the rotatable angle of the baffle 4 when opening the suction port 111. Setting the included angle between the connecting plate 42 and the limiting plate 41 to 90° to 120° ensures that the rotatable angle of the baffle 4 when opening the suction port 111 is less than 90°, while also allowing the baffle 4 to fully open the suction port 111, thus guaranteeing the flow of oil fumes through the suction port 111.

[0036] The smoke hood of this utility model, such as Figure 5 As shown, a rotating base 112 is provided on the upper side of the suction panel 11. Connecting pieces 43 are connected to both sides of the connecting plate 42. The connecting pieces 43 are folded upward to form a connecting seat, and the connecting seat is rotatably connected to the rotating base 112. The rotating base is fixed to the upper surface of the suction panel 11. The connecting pieces 43 are partially fixed to the surface of the connecting plate 42 and partially folded upward to form a connecting seat. The connecting seat is rotatably connected to the rotating base, so that the connecting plate 42 can be connected relative to the rotating base 112, thereby realizing the rotatable mounting of the baffle 4 on the rotating base 112.

[0037] In this utility model of a range hood, the length of the baffle 4 in the left-right direction is greater than the length of the air intake 111. When the exhaust fan 3 stops running, the baffle 4 completely blocks the air intake 111. When the exhaust fan 3 stops running, the baffle 4 returns to the position of closing the air intake 111 under the action of gravity. Since the length of the baffle 4 is greater than the length of the air intake 111, the baffle 4 can completely close the air intake 111. Thus, the baffle 4 can not only fully catch the oil droplets dripping from the cover plate 12, but also prevent the oil on the baffle 4 from flowing out of the air intake 111 along the baffle 4. It can also block the user's view of the air intake 111, improving the overall appearance of the range hood.

[0038] The smoke hood of this utility model, such as Figure 5 As shown, when the baffle 4 opens the air intake 111, its projection is located outside the air intake 111. When the baffle 4 opens the air intake 111, its projection on the air intake panel 11 is located outside the air intake 111. In this way, the baffle 4 can avoid partially blocking the airflow path when the air intake 111 is opened, thereby avoiding affecting the effect of the air intake 111 in drawing in oil fumes, so as to ensure the range hood's oil fume extraction effect.

[0039] The smoke hood of this utility model, such as Figure 5 As shown, at least a portion of the baffle 4 is arc-shaped, with the convex surface of the arc facing the air intake 111. When the baffle 4 closes the air intake 111, the convex arc surface faces the air intake 111, allowing the baffle 4 to close the air intake 111 more tightly. Furthermore, the concave arc surface of the baffle 4 faces upward, so that oil droplets dripping onto the baffle 4 can be collected on the upper surface of the baffle 4 instead of flowing down the lower surface, thereby improving the oil containment effect.

[0040] The smoke hood of this utility model, such as Figure 5As shown, the upper edge of the baffle 4 is also provided with a guide plate 44. The angle between the surface of the guide plate 44 away from the air intake 111 and the surface of the baffle 4 away from the air intake 111 is greater than 90 degrees and less than 180 degrees. When the baffle 4 opens the air intake 111, the guide plate 44 can guide the airflow that flows into the air intake 111 and then through the baffle 4, so that the airflow can diffuse more quickly in the air collection cavity 13 under the action of the guide plate 44, thereby reducing the influence of the baffle 4 on the diffusion process of the airflow in the air collection cavity 13. This can reduce airflow noise and improve the smoothness of the oil fume flow.

[0041] The smoke hood of this utility model, such as Figure 3 and Figure 4 As shown, the exhaust fan 3 is inclinedly installed inside the air collection box 2. The suction side of the exhaust fan 3 is located behind the air inlet 111, and the baffle 4 is rotatably connected to the front side of the air inlet 111. The exhaust fan 3 is located above the air inlet 111, and the suction side of the exhaust fan 3 is inclined towards the air inlet 111. Therefore, the suction force of the exhaust fan 3 on the air inlet 111 and the baffle 4 can have a vertically upward component, thereby improving the effect on the baffle 4. Furthermore, the farther the baffle 4 is from the axis of rotation, the greater the suction force it receives, which can increase the torque on the baffle 4, making it easier for the baffle 4 to flip upward under the action of suction, ensuring that the baffle 4 can smoothly open the air inlet 111 under negative pressure.

[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A range hood, characterized in that, include: The housing (1) has a suction panel (11), a cover plate (12) and an air collection chamber (13) located between the suction panel (11) and the cover plate (12). The suction panel (11) is provided with a suction port (111), and the cover plate (12) is provided with a connection port. The width of the suction port (111) in the left and right directions is greater than the width of the connection port. An air collection box (2) is connected to the connection port and located above the cover plate (12). The air collection box (2) is connected to the air collection chamber (13). An exhaust fan (3) is provided inside the air collection box (2). The baffle (4) is rotatably connected above the suction panel (11). When the exhaust fan (3) is running, the exhaust fan (3) forms a negative pressure in the air collection chamber (13). Under the action of the negative pressure, the baffle (4) rotates and opens the air intake (111). When the exhaust fan (3) stops running, the baffle (4) resets under its own weight and at least blocks the part of the air intake (111) that is aligned with the cover plate (12).

2. The range hood according to claim 1, characterized in that, The baffle (4) is provided with a limiting plate (41). When the baffle (4) opens the air intake (111), the limiting plate (41) limits the flipping angle of the baffle (4) so ​​that the flipping angle of the baffle (4) is less than 90 degrees.

3. The range hood according to claim 2, characterized in that, The baffle (4) is also provided with a connecting plate (42). The baffle (4) and the limiting plate (41) are respectively connected to the front and rear edges of the connecting plate (42). The baffle (4) extends upward and the limiting plate (41) extends downward. When the baffle (4) flips under the negative pressure in the air collecting cavity (13), the lower edge of the limiting plate (41) gradually approaches the suction panel (11). When the lower edge of the limiting plate (41) contacts the suction panel (11), the baffle (4) flips into place.

4. The range hood according to claim 3, characterized in that, The included angle between the limiting plate (41) and the connecting plate (42) is greater than 90 degrees and less than 120 degrees.

5. The range hood according to claim 3, characterized in that, The upper side of the suction panel (11) is provided with a rotating seat (112), and the two sides of the connecting plate (42) are connected with connecting pieces (43). The connecting pieces (43) are folded upward to form a connecting seat, and the connecting seat is rotatably connected to the rotating seat (112).

6. The range hood according to claim 5, characterized in that, The length of the baffle (4) in the left-right direction is greater than the length of the air intake (111). When the exhaust fan (3) stops running, the baffle (4) blocks the entire air intake (111).

7. The smoke hood according to claim 1, characterized in that, When the baffle (4) opens the air intake (111), its projection is located outside the air intake (111).

8. The range hood according to claim 1, characterized in that, The baffle (4) has at least a portion that is arc-shaped, with the convex surface of the arc facing the air intake (111).

9. The range hood according to claim 8, characterized in that, The upper edge of the baffle (4) is also provided with a guide plate (44), and the angle between the surface of the guide plate (44) away from the air inlet (111) and the surface of the baffle (4) away from the air inlet (111) is greater than 90 degrees and less than 180 degrees.

10. The smoke hood according to claim 1, characterized in that, The exhaust fan (3) is inclined inside the air collection box (2), and the suction side of the exhaust fan (3) is located in front of the air inlet (111). The baffle (4) is rotatably connected to the rear side of the air inlet (111).

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