Transition cavity and range hood comprising same

Abstract

The utility model provides a transition cavity and a range hood including the transition cavity, the transition cavity is arranged between a fan system and a smoke gathering cavity of the range hood, the transition cavity is respectively communicated with the fan system and the smoke gathering cavity, the length dimension of the transition cavity is L along the length direction of the range hood, the length size of the fan system is L2, the length size of the smoke gathering cavity is L1, and L is larger than L2 and smaller than L1. By arranging the transition cavity and limiting the length size of the transition cavity, the oil smoke gathering volume is effectively increased, oil smoke is buffered, the oil smoke capturing range is widened, the oil smoke capturing capacity is improved, and the smoke exhaust resistance is reduced; the transition cavity expands the volume and slows down the gas flow rate, so that the air can consume energy in the transition cavity through the processes of diffusion, speed reduction and the like, and the noise is reduced; as the volume of the gas reaches the transition cavity, the gas can rapidly expand to slow down the flow rate, so that the cooling effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, in particular to a transition cavity and a range hood comprising the same. Background Art

[0002] In order to improve the smoke collection ability of the range hood and create a range hood that does not leak smoke, in addition to methods such as butterfly-wing ring suction plates, the general method is to increase the length of the smoke collection cavity under the range hood main chassis to increase the smoke collection range, or lower the height of the range hood to make the smoke inlet closer to the golden smoking area to increase the smoke collection efficiency.

[0003] Since the smoke collecting cavity under the range hood chassis has many spatial size limitations in the longitudinal and thickness range, the only option is to increase the length of the smoke collecting cavity, which can increase the volume of the smoke collecting cavity and expand the smoke collecting range. However, due to the size limitation, the smoke capture capacity improved by this method is limited. If the height of the range hood is lowered, it is more likely to cause head collisions, and the cooking space below will also be reduced, making it easier to hit the range hood panel when flipping the wok. Utility Model Content

[0004] The technical problem to be solved by the present invention is to overcome the defect of poor smoke capture effect in the prior art and to provide a transition cavity and a range hood comprising the same.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A transition cavity is provided between a fan system and a smoke collecting cavity of a range hood. The transition cavity is communicated with the fan system and the smoke collecting cavity respectively. Along the length direction of the range hood, the length dimension of the transition cavity is L, the length dimension of the fan system is L2, the length dimension of the smoke collecting cavity is L1, and L2<L<L1.

[0007] In this solution, a transition cavity is provided and the length of the transition cavity is restricted to effectively increase the volume of oil smoke collection, which is equivalent to adding a buffer area for oil smoke, so that the range of oil smoke capture by the range hood is expanded, effectively reducing the smoke exhaust resistance, and greatly improving the smoke capture capacity of the range hood; the transition cavity expands the volume of the gas by increasing the volume, and slows down the gas flow rate, so that the air can consume energy through diffusion, deceleration and other processes in the transition cavity, which is equivalent to adding an expansion cavity to the range hood to reduce noise; the oil smoke gas is usually high-temperature and high-speed after evaporation, and when the gas reaches the transition cavity, due to the increase in volume, it will rapidly expand and slow down the flow rate to achieve a cooling effect, which is beneficial to improving the service life of the range hood.

[0008] Preferably, along the width direction of the range hood, the width dimension of the transition cavity is B, the width dimension of the smoke collecting cavity is B1, and B1>B.

[0009] In this solution, the above-mentioned arrangement can prevent the transition cavity from being too wide and affecting the oil fume collection effect.

[0010] Preferably, the transition cavity and the smoke collecting cavity are made of the same material.

[0011] In this solution, the above arrangement makes the connection between the transition cavity and the smoke collecting cavity smoother.

[0012] Preferably, the transition cavity and the smoke collecting cavity are integrally formed.

[0013] In this solution, the above arrangement is used to prevent oil smoke from leaking from the connection between the transition cavity and the smoke collecting cavity.

[0014] Preferably, the transition cavity includes a first side and a second side, the first side is arranged along the height direction of the range hood, the second side is arranged along the length direction of the range hood, and the second side is arranged perpendicular to the first side.

[0015] In this solution, the above arrangement is used to increase the smoke-collecting volume of the smoke-collecting cavity by the transition cavity communicated with the smoke-collecting cavity.

[0016] Preferably, the transition cavity includes a first side and a second side, the first side is arranged along the height direction of the range hood, the second side is arranged along the length direction of the range hood, the first side extends from the second side to the smoke collecting cavity, and the first side is arranged inclined outward in a direction away from the fan system.

[0017] In this solution, the above arrangement is used to increase the smoke collection volume while guiding the oil smoke through the inclined first side.

[0018] Preferably, the transition cavity includes a guide portion, and the guide portion is located at two opposite edges of the transition cavity along the length direction of the range hood.

[0019] In this solution, the above-mentioned setting is used to guide the oil smoke.

[0020] Preferably, the guide portion is an arc-shaped structure, and the opening of the arc-shaped structure faces the smoke collecting chamber.

[0021] In this solution, the above-mentioned setting is used to achieve the diversion of oil smoke.

[0022] Preferably, the guide portion is an arc-shaped structure, and an opening of the arc-shaped structure is away from the smoke collecting chamber.

[0023] In this solution, the above-mentioned setting is used to reduce the space occupied by the range hood and at the same time guide the oil smoke.

[0024] A range hood comprises the transition cavity as described above.

[0025] In this solution, the range hood includes the above-mentioned transition cavity, which utilizes the transition cavity to enhance the smoke collection range of the smoke collection cavity, reduce the smoke exhaust resistance, and greatly improve the smoke capture ability of the range hood; and slows down the gas flow rate, so that the air can consume energy through diffusion, deceleration and other processes in the transition cavity to reduce noise; the oil fume gas is usually high-temperature and high-speed after evaporation, and when the gas reaches the transition cavity, due to the increase in volume, it will rapidly expand and slow down the flow rate to achieve a cooling effect, which is beneficial to improving the service life of the range hood.

[0026] The positive progressive effect of the present invention is that: the present invention sets a transition cavity and limits the length of the transition cavity to effectively increase the smoke collection volume, which is equivalent to adding a buffer area for the smoke, so that the range of the range hood to capture the smoke is expanded, and the smoke exhaust resistance is effectively reduced, so that the smoke capture ability of the range hood is greatly improved; the transition cavity expands the volume of the gas by increasing the volume, and slows down the gas flow rate, so that the air can consume energy through diffusion, deceleration and other processes in the transition cavity, which is equivalent to adding an expansion cavity to the range hood to reduce noise; the oil fume gas is usually high-temperature and high-speed after evaporation, and the gas will expand rapidly and slow down the flow rate due to the increase in volume when it reaches the transition cavity, so as to achieve a cooling effect, which is beneficial to improving the service life of the range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a structural diagram of a range hood according to a preferred embodiment of the present invention.

[0028] Figure 2 This is a three-dimensional diagram of a range hood according to a preferred embodiment of the present invention.

[0029] Figure 3 This is a diagram showing the positional relationship between the first side and the second side of a preferred embodiment of the present invention.

[0030] Figure 4 This is a diagram showing the positional relationship between the guide portion and the smoke collecting chamber in a preferred embodiment of the present invention.

[0031] Figure 5 This is a structural schematic diagram of a preferred embodiment of the present invention in which the guide portion opening is away from the smoke collecting chamber.

[0032] Description of reference numerals:

[0033] Transition cavity 10

[0034] First side 11

[0035] Second side 12

[0036] Guide portion 13

[0037] Fan system 20

[0038] Smoke chamber 30

[0039] Range hood 100 DETAILED DESCRIPTION

[0040] A preferred embodiment is given below, and the present invention is described more clearly and completely in conjunction with the accompanying drawings.

[0041] This embodiment provides a transition cavity 10, the specific structure of which is as follows Figure 1 and Figure 2 As shown, the transition cavity 10 is arranged between the fan system 20 and the smoke collecting cavity 30 of the range hood 100, and the transition cavity 10 is connected with the fan system 20 and the smoke collecting cavity 30 respectively. Along the length direction of the range hood 100, the length dimension of the transition cavity 10 is L, the length dimension of the fan system 20 is L2, the length dimension of the smoke collecting cavity 30 is L1, and L2<L<L1.

[0042] Specifically, the transition cavity 10 is a sleeve structure and is internally through-connected. The bottom of the transition cavity 10 is connected to the top of the smoke collecting cavity 30, and the top of the transition cavity 10 is connected to the fan system 20, so as to achieve communication with the smoke collecting cavity 30 and the fan system 20. It can be understood that the smoke collecting cavity 30 is a rectangular cavity, the transition cavity 10 is consistent with the shape of the smoke collecting cavity 30, and the length direction of the transition cavity 10 is consistent with the length direction of the smoke collecting cavity 30. The fan system 20, the transition cavity 10, and the smoke collecting cavity 30 are arranged in sequence along the height direction of the range hood 100. Among them, along the length direction of the range hood 100, the length dimension of the transition cavity 10 is L, the length dimension of the fan system 20 is L2, and the length dimension of the smoke collecting cavity 30 is L1, and L2<L<L1. By setting up a transition cavity 10 and limiting the length of the transition cavity 10, the smoke collection volume is effectively increased, which is equivalent to adding a buffer area after the smoke enters the range hood 100 from the smoke collection cavity 30, so that the range of the range hood 100 to capture the smoke is increased, the smoke exhaust resistance is effectively reduced, and the smoke capture capacity of the range hood 100 is greatly improved.

[0043] Furthermore, the provision of the transition chamber 10 increases the smoke-collecting volume of the range hood 100, thereby expanding the gas volume. This increased volume reduces the gas flow rate, allowing the air to dissipate energy through processes such as diffusion and deceleration within the transition chamber 10. This effectively adds an expansion chamber to the range hood 100 to reduce noise. Furthermore, oil smoke typically evaporates at high temperature and high velocity. Upon entering the transition chamber 10, the increased volume causes the gas to rapidly expand and slow its flow rate, achieving a cooling effect. This helps extend the service life of the range hood 100.

[0044] In this embodiment, along the width direction of the range hood 100 , the width dimension of the transition cavity 10 is B, the width dimension of the smoke collecting cavity 30 is B1 , and B1 > B.

[0045] Specifically, along the width direction, the thickness of the transition cavity 10 is smaller than the thickness of the smoke collection cavity 30. Compared to when the thickness of the transition cavity 10 is greater than the thickness of the smoke collection cavity 30, this can effectively prevent the situation where the transition cavity 10 is too wide and the oil smoke accumulates in a large space and cannot flow quickly to the fan system 20, thus affecting the oil smoke collection effect. It is understandable that to ensure that the oil smoke flows more smoothly from the transition cavity 10 to the fan system 20, the width of the transition cavity 10 can be the same as the width of the fan system 20, or slightly larger than the width of the fan system 20, to avoid the situation where the oil smoke enters the transition cavity 10 and flows into the fan system 20 with too low a flow rate when the width of the transition cavity 10 is smaller than the width of the fan system 20.

[0046] Furthermore, the transition cavity 10 and the smoke collecting cavity 30 are made of the same material. Compared with transition cavities 10 and smoke collecting cavity 30 made of different materials, the transition cavity 10 and smoke collecting cavity 30 made of the same material have a closer fit at the connection, so that the oil smoke passes through the connection between the transition cavity 10 and the smoke collecting cavity 30 more smoothly.

[0047] In this embodiment, the transition cavity 10 and the smoke collecting cavity 30 are integrally formed. The transition cavity 10 and the smoke collecting cavity 30 can be integrally formed by casting, which can prevent oil smoke from leaking from the connection between the transition cavity 10 and the smoke collecting cavity 30 compared to welding.

[0048] In this embodiment, the transition cavity 10 includes a first side 11 and a second side 12. The first side 11 is arranged along the height direction of the range hood 100, and the second side 12 is arranged along the length direction of the range hood 100, and the second side 12 is arranged perpendicular to the first side 11.

[0049] Specifically, the first side 11 is connected to the smoke collection chamber 30, while the second side 12 is connected to the fan system 20. The first side 11 and the second side 12 are arranged perpendicularly to ensure that the transition chamber 10 and the smoke collection chamber 30 have the same rectangular shape. Compared to other connection arrangements between the first side 11 and the second side 12, the perpendicular arrangement can avoid affecting the intake resistance of the fan system 20, that is, avoiding affecting the flow rate of oil smoke, while effectively expanding the volume of the transition chamber 10 connected to the smoke collection chamber 30, thereby improving noise reduction, smoke collection, and temperature reduction performance.

[0050] like Figure 3 As shown, in other embodiments, the transition cavity 10 includes a first side 11 and a second side 12, the first side 11 is arranged along the height direction of the range hood 100, and the second side 12 is arranged along the length direction of the range hood 100, the first side 11 extends from the second side 12 to the smoke collecting cavity 30, and the first side 11 is inclined outward in a direction away from the fan system 20.

[0051] Specifically, the second side 12 is still arranged along the length direction of the range hood 100 and is connected to the fan system 20. The first side 11 and the second side 12 are no longer arranged vertically, but the first side 11 is inclined outward in the direction away from the fan system 20. From the cross-section, the transition cavity 10 has a trapezoidal structure and is an isosceles trapezoid. Compared with the first side 11 arranged along the height direction of the range hood 100, the inclined first side 11 can increase the smoke collection volume while guiding the oil smoke through the inclined first side 11 to further reduce the air intake resistance of the fan system 20.

[0052] It is understandable that in order to ensure the volume inside the transition cavity 10, the second side 12 still has a certain size to avoid the situation where the volume inside the transition cavity 10 is too small when the transition cavity 10 is connected to the fan system 20 only through the first side 11.

[0053] like Figure 4 and Figure 5 As shown, in another embodiment, the transition cavity 10 includes a guide portion 13 , which is located at two opposite edges of the transition cavity 10 along the length direction of the range hood 100 .

[0054] Specifically, because the length of the transition chamber 10 along the length of the range hood 100 is greater than the length of the fan system 20, i.e., L>L2, space is provided in the length direction of the range hood 100 for disposing the guide portion 13. However, in the width direction of the range hood 100, the width of the transition chamber 10 is the same as or slightly greater than the width of the fan system 20. Consequently, the guide portion 13 is not required in the width direction of the range hood 100, thereby ensuring the size of the guide portion 13 while maintaining the oil fume diversion effect. The guide portion 13 can be a guide structure known in the art, such as a slope.

[0055] like Figure 4 As shown, in one embodiment, the guide portion 13 is an arc-shaped structure with its opening facing the smoke collecting chamber 30. The arc-shaped structure is a prior art structure in which the sidewalls of the chamber are curved plates. This is prior art and will not be described in detail here. By orienting the opening of the arc-shaped structure toward the smoke collecting chamber 30, the flow of oil smoke from the smoke collecting chamber 30 into the transition chamber 10 becomes smoother, thereby effectively guiding the oil smoke.

[0056] like Figure 5 As shown, in other embodiments, the guide portion 13 is an arc-shaped structure, and the opening of the arc-shaped structure is away from the smoke collecting chamber 30. By arranging the opening of the arc-shaped structure away from the smoke collecting chamber 30, the space occupied by the transition chamber 10 is reduced, thereby reducing the space occupied by the range hood 100 during installation, while also achieving oil smoke diversion.

[0057] This embodiment also provides a range hood 100, which includes the aforementioned transition chamber 10. The transition chamber 10 increases the smoke-collecting range of the smoke-collecting chamber 30 and reduces smoke exhaust resistance, significantly improving the smoke capture capability of the range hood 100. It also slows down the gas flow rate, allowing air to dissipate energy through diffusion and deceleration within the transition chamber 10, thereby reducing noise. Oil smoke typically evaporates at high temperature and high velocity. Upon entering the transition chamber 10, the increased volume causes the gas to rapidly expand and slow its flow rate, achieving a cooling effect. This helps extend the service life of the range hood 100.

[0058] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of protection of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of protection of the present invention.

Claims

1. A transition cavity, which is arranged between the fan system and the smoke collecting cavity of the range hood, characterized in that: The transition cavity is connected to the fan system and the smoke collection cavity respectively. Along the length direction of the range hood, the length dimension of the transition cavity is L, the length dimension of the fan system is L2, the length dimension of the smoke collection cavity is L1, and L2<L<L1.

2. The transition cavity according to claim 1, characterized in that: Along the width direction of the range hood, the width dimension of the transition cavity is B, the width dimension of the smoke collecting cavity is B1, and B1>B.

3. The transition cavity according to claim 2, characterized in that: The transition cavity is made of the same material as the smoke collecting cavity.

4. The transition cavity according to claim 1, characterized in that: The transition cavity and the smoke collecting cavity are integrally formed.

5. The transition cavity according to claim 2, characterized in that: The transition cavity includes a first side and a second side. The first side is arranged along the height direction of the range hood, the second side is arranged along the length direction of the range hood, and the second side is arranged perpendicular to the first side.

6. The transition cavity according to claim 2, characterized in that: The transition cavity includes a first side and a second side, the first side is arranged along the height direction of the range hood, the second side is arranged along the length direction of the range hood, the first side extends from the second side to the smoke collecting cavity, and the first side is arranged inclined outward in a direction away from the fan system.

7. The transition cavity according to claim 2, characterized in that: The transition cavity includes a guide portion, and the guide portion is located at two opposite edges of the transition cavity along the length direction of the range hood.

8. The transition cavity according to claim 7, characterized in that: The guide portion is an arc-shaped structure, and the opening of the arc-shaped structure faces the smoke collecting chamber.

9. The transition cavity according to claim 7, characterized in that: The guide portion is an arc-shaped structure, and an opening of the arc-shaped structure is far away from the smoke collecting cavity.

10. A range hood, characterized in that: The range hood comprises a transition cavity according to any one of claims 1 to 9.

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