Universal air outlet cover, range hood and flue system

Abstract

A kind of universal air outlet cover, including cover base and adapter ring, the cover base is arranged at the air outlet of range hood, the adapter ring is connected with smoke exhaust duct, the adapter ring is rotatably connected to the cover base, the included angle between the axis of the adapter ring and the axis of the cover base changes with the rotation of the adapter ring.The technical scheme provided by the utility model compared with prior art has the following advantages: high flexibility, strong scene adaptability, simple debugging process, suitable for oil fume flow to reduce oil accumulation and high safety factor, can divert oil fume flow when it is still in low speed state to reduce adverse eddy current and improve smoke exhaust efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of air outlet cover for range hood, especially to a universal air outlet cover, range hood and flue system. BACKGROUND

[0002] The air outlet cover for range hood is a component connected between the air outlet of range hood and the smoke exhaust duct, which mainly functions to slow down and pressurize the oil fume discharged from the air outlet of range hood, and to rectify the oil fume, so as to efficiently transport the oil fume to the public flue through the smoke exhaust duct and other components for discharge. However, due to the special nature of the oil fume flow, such as the temperature and specific gravity of the oil fume flow being generally higher than that of the surrounding air, the smoke exhaust efficiency of the air outlet cover is easily affected by the design defects of the air outlet cover itself structure, the limited installation space and other factors, so that the structural advantages of the air outlet cover have to be sacrificed. Therefore, how to balance and coordinate the contradiction between the smoke exhaust efficiency of the air outlet cover and the structure of the air outlet cover is the goal that the ordinary skilled in the art has been exploring.

[0003] At present, the existing air outlet cover products on the market mostly cannot meet the purpose of improving the smoke exhaust efficiency through structural adjustment. For example, a Chinese utility model patent with the title of an air outlet cover for a range hood and the authorization announcement number of CN222978205U discloses: including: a cover body (10) having an air inlet (101) and an air outlet (102), the air inlet (101) is used to connect with the fan of the range hood; a connecting ring (20) is connected at the air outlet (102) of the cover body (10) and is used to connect with the external air outlet smoke pipe; the cover body (10) has a first connecting part (11) extending outward adjacent to the air outlet (102) thereof, the top of the first connecting part (11) is provided with an annular mounting groove (110), the connecting ring (20) has a second connecting part (21) at the position connected with the air outlet (102) of the cover body (10), which can be inserted into the annular mounting groove (110) in a detachable manner, and a sealing element is arranged between the second connecting part (21) and the inner wall of the annular mounting groove (110) to realize sealing contact. The technical solution of the utility model realizes the up-down connection of the cover body (10) and the connecting ring (20) through a specific structure, the air outlet cover cannot divert the oil fume flow when the oil fume flow is still in a low-speed state, and more adverse vortexes will be generated when the oil fume flow is diverted after the subsequent speed-up, which affects the smoke exhaust efficiency. For another example, a Chinese utility model patent with the title of an air outlet cover for a range hood and the authorization announcement number of CN208983437U discloses: including a lower cover connected with the range hood, the lower cover is provided with a valve leaf which can be opened and closed by turning, the air outlet cover further includes a mounting ring connected with the air outlet pipe, the mounting ring and the lower cover are connected through a clamping structure, the clamping structure includes one of the lower cover and the mounting ring provided with a clamping hook and the other provided with a clamping part, the clamping part is provided with a clamping groove matched with the clamping hook, and the clamping hook is clamped in the clamping groove to realize the clamping of the lower cover and the mounting ring. The technical solution of the utility model realizes the up-down connection of the lower cover and the mounting ring through the clamping structure, and the air outlet cover cannot divert the oil fume flow when the oil fume flow is still in a low-speed state, which ultimately affects the smoke exhaust efficiency.For example, the Chinese utility model patent with the title of an air outlet cover for a range hood and the publication number of CN222978212U discloses: including: a cover body (10) having an air inlet (101) and an air outlet (102), the air inlet (101) is used for connecting with the fan of the range hood;A connecting ring (20) is connected at the air outlet (102) of the cover body (10) and is used for connecting with the external air outlet flue;The cover body (10) has a first connecting part (11) extending outward adjacent to the air outlet (102) thereof, and a ring-shaped mounting groove (110) is formed in the top of the first connecting part (11), the connecting ring (20) has a second connecting part (21) at the position connected with the air outlet (102) of the cover body (10), the air outlet cover further comprises a sealing element (30) capable of being mounted on the second connecting part (21) and capable of being removed from the second connecting part (21), in the mounted state of the sealing element (30) on the second connecting part (21), the second connecting part (21) and the sealing element (30) mounted thereon can be loaded into the ring-shaped mounting groove (110) together, and the sealing element (30) is in sealing contact with the inner wall of the second connecting part (21) and the ring-shaped mounting groove (110). The technical solution of the utility model cannot divert the oil fume flow when the oil fume flow is still in a low speed state.

[0004] To further improve the smoke exhaust efficiency of the air outlet cover, some air outlet cover products have made corresponding adjustments in structure and taken into account the limitation of actual installation space, for example, the Chinese utility model patent with the title of an air outlet cover for a range hood and the publication number of CN2433555Y discloses: including an air inlet part connected with the range hood and an air outlet part connected with the air outlet pipe, and the air inlet part has a slanting ventilation duct consistent with the tangential air outlet of the range hood. The technical solution of the utility model has the slanting ventilation duct consistent with the tangential air outlet in the air inlet part of the air outlet cover, which indeed helps the oil fume quickly enter the air outlet cover, however, whether the oil fume flow in the air outlet cover can be diverted into a direction suitable for the flow of the oil fume flow and towards the public flue is fundamentally unpredictable, and the air inlet part and the air outlet part of the air outlet cover cannot be structurally transformed according to the actual use scene, and the flexibility and scene adaptability are insufficient. Utility model content

[0005] In view of the deficiencies of the prior art, the utility model provides a universal air outlet cover, a range hood and a flue system, which have high flexibility, strong scene adaptability, simple debugging process, reduced oil stain accumulation amount due to suitable oil fume flow, high safety factor, can divert the oil fume flow when the oil fume flow is still in a low speed state, and can reduce adverse vortex and improve smoke exhaust efficiency.

[0006] The utility model mainly includes the following technical solutions:

[0007] A universal exhaust hood includes a hood base and a connecting ring. The hood base is located at the exhaust port of a range hood, and the connecting ring is connected to the exhaust duct. The connecting ring is rotatably connected to the hood base, and the angle between the axis of the connecting ring and the axis of the hood base changes as the connecting ring rotates.

[0008] The adapter ring has a rectangular cross-section at its bottom edge, and the cover base also has a rectangular cross-section at its top edge. The adapter ring is pivotally connected to the cover base. The outer edge of the bottom edge of the adapter ring has an outwardly extending outer edge, which includes a pivot section and a snap-fit ​​section. The pivot section cooperates with the inner side of the top edge of the cover base, and the snap-fit ​​section is movably snapped onto the inner sidewall of the cover base.

[0009] The pivot section is located on the outer edge of the bottom edge of the adapter ring. Pivots protrude from both ends of the pivot section. A pivot hole and a sliding groove are formed on the inner side of the top edge of the cover base. The pivot slides into the pivot hole through the sliding groove.

[0010] The pivot section rotates along its length, closely attached to the inner side of the top edge of the base of the cover.

[0011] The outer edge also includes a connecting section, and the wind deflector is rotatably connected to the connecting section. The base of the cover also has a clearance notch on the side wall corresponding to the wind deflector.

[0012] The wind deflector is provided with limiting protrusions on both sides of its bottom end, and a limiting track is formed on the inner side wall of the cover base, with the limiting protrusions installed in the limiting track.

[0013] The adapter ring has a rectangular cross-section at its bottom edge, and the cover base also has a rectangular cross-section at its top edge. The adapter ring is pinned to the cover base. An outwardly extending outer edge is formed on the outer side of the bottom edge of the adapter ring. The outer edge includes a snap-fit ​​section and a connecting section. The snap-fit ​​section is movably snapped onto the inner sidewall of the cover base. The wind deflector is rotatably connected to the connecting section. The cover base also has a clearance notch on the sidewall corresponding to the wind deflector.

[0014] In this embodiment, a protrusion is formed at the middle position above the two symmetrical snap-fit ​​sections, or at the middle position inside the two symmetrical top edges of the cover base. A pin hole is provided on the protrusion, and the adapter ring and the cover base are connected by a pin passing through the pin hole.

[0015] The bottom edge inner side of the adapter ring is further provided with a wind guide sheet, which is parallel to the axis of the adapter ring.

[0016] An oil fume exhauster adopts the universal air outlet cover.

[0017] A flue system adopts the universal air outlet cover.

[0018] According to the technical scheme, the included angle between the axis of the adapter ring and the axis of the cover base changes with the rotation of the adapter ring, the included angle between the cover base and the adapter ring can be adjusted to change the structure of the air outlet cover to adapt to the narrow installation space, the air outlet cover can be adjusted to have a favorable deflection angle to improve the smoke exhaust efficiency and reduce the oil accumulation, the bottom edge of the adapter ring forms an outer edge, the pivot segment in the outer edge is pivoted to the cover base, and the clamping segment in the outer edge is movably clamped to the inner side wall of the cover base, so that the structure is simple, the process difficulty is low, and the production and processing are convenient; the wind guide sheet is arranged on the inner side of the bottom edge of the adapter ring, the wind guide sheet can move synchronously with the rotation of the adapter ring, the oil fume flow is divided by the wind guide sheet, the adverse vortex caused by the collision and accumulation of a large amount of airflow is reduced, and the smoke exhaust efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 Fig. 1 is a structural schematic view of the universal air outlet cover when the adapter ring is in the initial rotating state relative to the cover base.

[0020] Figure 2 Fig. 2 is a structural schematic view of the universal air outlet cover when the adapter ring is in the intermediate rotating state relative to the cover base. Figure 1 Fig. 3 is a sectional structural schematic view of the adapter ring in the X-X direction.

[0021] Figure 3 Fig. 4 is a structural schematic view of the universal air outlet cover when the adapter ring is in the terminal rotating state relative to the cover base.

[0022] Figure 4 Fig. 5 is a sectional structural schematic view of the adapter ring in the Y-Y direction. Figure 2 Fig. 6 is a sectional structural schematic view of the adapter ring in the Z-Z direction.

[0023] Figure 5 Fig. 7 is an exploded structural schematic view of the universal air outlet cover in an embodiment.

[0024] Figure 6 Fig. 8 is a structural schematic view of the universal air outlet cover in the embodiment. Figure 5 Fig. 9 is a sectional structural schematic view of the universal air outlet cover in the embodiment.

[0025] Figure 7 Fig. 10 is a sectional structural schematic view of the universal air outlet cover in the embodiment.

[0026] Figure 8This is an exploded view of the universal air outlet hood in another embodiment.

[0027] Figure 9 This is a structural diagram of a range hood and flue system using a universal exhaust hood.

[0028] 1. Universal air outlet cover, 11. Cover base, 110. Clearance notch, 12. Adapter ring, 121. Outer edge, 1211. Pivot section, 1212. Clip section, 1213. Connecting section, 2. Smoke exhaust duct, A. Pivot, B. Pivot hole, C. Slide groove, T. Baffle plate, M. Limiting protrusion, N. Limiting track, P. Protrusion, K. Air guide plate. Detailed Implementation

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings:

[0030] See Figures 1-8 As shown, a universal exhaust hood 1 includes a hood base 11 and a connecting ring 12. The hood base 11 is located at the air outlet of the range hood, and the connecting ring 12 is connected to the exhaust duct 2. The connecting ring 12 is rotatably connected to the hood base 11, and the angle between the axis of the connecting ring 12 and the axis of the hood base 11 changes as the connecting ring 12 rotates. In this application, the structure of the exhaust hood can be changed to adapt to a small installation space by adjusting the angle between the hood base and the connecting ring. Moreover, by adjusting the angle between the hood base and the connecting ring, the exhaust hood can be adjusted to have a pneumatically advantageous turning angle to better facilitate the exhaust of fumes, improve exhaust efficiency, reduce the amount of oil accumulation, and thus reduce the possibility of fire risk, thereby improving the safety factor and reducing the difficulty of cleaning. In one embodiment of this application, preferably, a hollow ball joint structure can be used to realize the rotatable connection between the cover base 11 and the adapter ring 12, so that the included angle between the axis of the adapter ring 12 and the axis of the cover base 11 changes with the rotation of the adapter ring 12.

[0031] See Figures 1-7As shown, the cross section of the adapter ring 12 at its bottom edge is rectangular, the cross section of the cover base 11 at its top edge is also rectangular, the adapter ring 12 is pivoted to the cover base 11, the bottom edge of the adapter ring 12 is formed with an outward extending outer rim 121, the outer rim 121 comprises a pivoting section 1211 and a clamping section 1212, the pivoting section 1211 cooperates with the inner side of the top edge of the cover base 11, the clamping section 1212 is movably clamped to the inner side wall of the cover base 11. In the present application, the cross section of the adapter ring at its bottom edge is rectangular, the cross section of the cover base at its top edge is also rectangular, and the two are cooperated to realize the adjustment of the turning angle of the air outlet cover. The structure design simplifies the production difficulty of the parts, is more convenient for batch production, and improves the production efficiency. In the present application, the bottom edge of the adapter ring is formed with an outer rim, the pivoting section in the outer rim is pivoted to the cover base, and the clamping section in the outer rim is movably clamped to the inner side wall of the cover base. The structure is simple, the process difficulty is low, and the production and processing are convenient. In the present application, the adapter ring is pivoted to the cover base, and the adapter ring rotates in one dimension relative to the cover base. To adapt to different actual installation scenes, the installation direction of the cover base and the air outlet of the range hood can be adjusted to realize the rotation in another dimension, so as to realize the true meaning of "omnidirectional". In the present application, the pivoting section can be located on the outer rim of one side of the bottom edge of the adapter ring, or can be located at the middle position of the outer rims of the two symmetrical bottom edges of the adapter ring (in this embodiment, a structure similar to "seesaw" is presented, and the length of the pivoting section is very short). Preferably, when the pivoting section 1211 is located on the outer rim of one side of the bottom edge of the adapter ring 12, an inward extending inner rim with a certain length can also be formed along the inner side of the top edge of the cover base 11. In order to improve the connection firmness between the pivoting section 1211 and the inner rim, the pivoting section 1211 and the inner rim can be connected in a segmented manner.

[0032] Referring to Figures 1-7 As shown, the pivoting section 1211 is located on the outer rim of one side of the bottom edge of the adapter ring 12, and the two ends of the pivoting section 1211 are provided with pivots A. The inner side of the top edge of the cover base 11 is formed with a pivot hole B and a sliding groove C, and the pivot A is slid into the pivot hole B through the sliding groove C.

[0033] Referring to Figures 1-7 As shown, the pivoting section 1211 rotates along the length direction and closely abuts the inner side of the top edge of the cover base 11. In the present application, in order to minimize the gap between the adapter ring and the cover base, the pivoting section rotates along the length direction and closely abuts the inner side of the top edge of the cover, so as to prevent the leakage of oil fume from the gap and reduce the smoke exhaust effect.

[0034] Referring to Figures 1-7As shown, the outer edge 121 further comprises a connecting section 1213, the wind shield T is rotatably connected to the connecting section 1213, and the shell base 11 further forms a gap 110 on the side wall corresponding to the side of the wind shield T. In the present application, the gap can provide more space for the rotation of the adapter ring, thereby realizing the adjustment of a larger turning angle between the adapter ring and the shell base, and improving the scene adaptability of the air outlet cover. In the present application, the wind shield is used to shield the gap, thereby preventing the leakage of oil fume from the gap, and improving the smoke exhaust effect.

[0035] Referring to Figures 1-8 As shown, the bottom end of the wind shield T is further provided with a limiting convex M, and the inner side wall of the shell base 11 is further formed with a limiting track N, and the limiting convex M is arranged in the limiting track N. In the present application, in order to prevent the wind shield from freely moving under the action of gravity and failing to shield the gap due to the rotation of the adapter ring, a limiting track can be formed on the inner side wall of the shell base, thereby preventing the leakage of oil fume when the wind shield fails to shield the gap during the free movement, and the limiting track provides structural guarantee for the wind shield to effectively shield the gap.

[0036] Referring to Figure 8 As shown, the cross section of the adapter ring 12 at the bottom edge thereof is rectangular, the cross section of the shell base 11 at the top edge thereof is also rectangular, the adapter ring 12 is pinned to the shell base 11, the bottom edge of the adapter ring 12 is formed with an outward extending outer edge 121, the outer edge 121 comprises a clamping section 1212 and a connecting section 1213, the clamping section 1212 is movably clamped to the inner side wall of the shell base 11, the wind shield T is rotatably connected to the connecting section 1213, and the shell base 11 is further formed with a gap 110 on the side wall corresponding to the side of the wind shield T.

[0037] Referring to Figure 8 As shown, a convex block P is formed at a middle position above the two symmetrical clamping sections 1212, or at a middle position inside the two symmetrical top edges of the shell base 11, a pin shaft hole is formed in the convex block P, and the adapter ring 12 and the shell base 11 are connected through a pin shaft arranged in the pin shaft hole. In the present application, the wind shield can be rotatably connected to the outer edge of the two symmetrical bottom edges of the adapter ring, and the outer edges of the other two bottom edges of the adapter ring form clamping sections. At this time, the length of the wind shield is greater than the height of the gap, and the flexible material (hard material cannot be folded when the adapter ring rotates) is used.

[0038] Referring to Figures 1-8As shown, the inner side of the bottom edge of the adapter ring 12 is also provided with a wind deflector K, which is parallel to the axis of the adapter ring 12. Preferably, the wind deflector K is also parallel to the rotation axis of the adapter ring 12. In the present application, the wind deflector can move synchronously with the rotation of the adapter ring, and the oil fume flow is divided by the wind deflector, so as to reduce the adverse vortex generated by the large flow impact and accumulation, and improve the exhaust efficiency. In the present application, it is also not excluded that the wind deflector and the axis of the adapter ring form a certain angle.

[0039] Referring to Figure 9 As shown, an oil fume machine adopts the above universal air outlet cover.

[0040] Referring to Figure 9 As shown, a flue system adopts the above universal air outlet cover.

[0041] Although the specific embodiments of the present application have been described above, those skilled in the art can make changes to it without departing from the spirit and principles of the present application, and the protection scope of the present application is defined by the claims and their equivalents.

Claims

1. A universal exhaust hood, comprising a hood base and a connecting ring, wherein the hood base is disposed at the exhaust outlet of a range hood, and the connecting ring is connected to an exhaust duct, characterized in that: The adapter ring is rotatably connected to the base of the cover, and the angle between the axis of the adapter ring and the axis of the base of the cover changes as the adapter ring rotates.

2. The universal air outlet hood according to claim 1, characterized in that: The adapter ring has a rectangular cross-section at its bottom edge, and the cover base also has a rectangular cross-section at its top edge. The adapter ring is pivotally connected to the cover base. The outer edge of the bottom edge of the adapter ring has an outwardly extending outer edge, which includes a pivot section and a snap-fit ​​section. The pivot section cooperates with the inner side of the top edge of the cover base, and the snap-fit ​​section is movably snapped onto the inner sidewall of the cover base.

3. The universal air outlet cover according to claim 2, characterized in that: The pivot section is located on the outer edge of the bottom edge of the adapter ring. Pivots protrude from both ends of the pivot section. A pivot hole and a groove are formed on the inner side of the top edge of the cover base. The pivot slides into the pivot hole through the groove.

4. The universal air outlet cover according to claim 3, characterized in that: The pivot section rotates along its length, closely attached to the inner side of the top edge of the base of the cover.

5. The universal air outlet hood according to any one of claims 2 to 4, characterized in that: The outer edge also includes a connecting section, to which the wind deflector is rotatably connected, and the base of the cover also has a clearance notch formed on the side wall corresponding to the wind deflector.

6. The universal air outlet hood according to claim 5, characterized in that: The bottom of the wind deflector is provided with limiting protrusions on both sides, and a limiting track is formed on the inner side wall of the cover base, with the limiting protrusions installed in the limiting track.

7. The universal air outlet cover according to claim 1, characterized in that: The adapter ring has a rectangular cross-section at its bottom edge, and the cover base also has a rectangular cross-section at its top edge. The adapter ring is pinned to the cover base. An outwardly extending outer edge is formed on the outer side of the bottom edge of the adapter ring. The outer edge includes a snap-fit ​​section and a connecting section. The snap-fit ​​section is movably snapped onto the inner sidewall of the cover base. The wind deflector is rotatably connected to the connecting section. The cover base also has a clearance notch on the sidewall corresponding to the wind deflector.

8. The universal air outlet hood according to claim 7, characterized in that: A protrusion is formed at the middle position above the two symmetrical snap-fit ​​sections, or at the middle position inside the two symmetrical top edges of the cover base. A pin hole is provided on the protrusion, and the adapter ring and the cover base are connected by a pin passing through the pin hole.

9. The universal air outlet hood according to any one of claims 1 to 4, 6 to 8, characterized in that: The inner side of the bottom edge of the adapter ring is also equipped with an air guide plate, which is parallel to the axis of the adapter ring.

10. A range hood, characterized in that: The universal air outlet cover described in any one of claims 1 to 8 is adopted.

11. A flue system, characterized in that: The universal air outlet cover described in any one of claims 1 to 8 is adopted.

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