Range hood and smoke outlet seat assembly thereof

Abstract

The smoke outlet seat assembly is used for being transversely arranged above a suspended ceiling, the smoke outlet seat assembly comprises a smoke outlet seat and a smoke exhaust pipe connecting seat, the smoke outlet seat is provided with a first smoke inlet part and a first smoke outlet part, the first smoke outlet part is provided with a first butt joint part, and the first butt joint part is provided with a second butt joint part. The smoke exhaust pipe connecting seat is provided with a second smoke inlet part and a second smoke outlet part, the second smoke outlet part is used for being connected with a smoke exhaust pipe, the second smoke inlet part is provided with a second butt joint part, and the first smoke outlet part and the second smoke inlet part are in threaded connection or quick connection through the first butt joint part and the second butt joint part. According to the range hood and the smoke outlet seat assembly thereof provided by the embodiment of the invention, the maximum outer contour size of the smoke outlet seat assembly can be effectively reduced, and the mounting adaptability of the smoke outlet seat assembly above a suspended ceiling is enhanced.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, and in particular to a range hood and its smoke outlet assembly. Background Technology

[0002] Range hoods have become an indispensable kitchen appliance in modern homes. Their main function is to remove cooking fumes, thus maintaining a pleasant kitchen environment.

[0003] Common integrated range hoods have the following main drawbacks: the fan inevitably generates significant noise as it moves the fumes, resulting in a poor user experience while cooking. To overcome these issues, a split-type range hood has been proposed, achieving a certain degree of noise reduction.

[0004] Currently, when installing split-type range hoods, the outlet of the fan box needs to be located above the ceiling. For example... Figure 1 As shown, a smoke outlet seat 5 can be installed at the outlet of the fan box, and a smoke exhaust pipe connector can be connected to the smoke outlet seat 5 and locked in place by an intermediate connecting transition piece 59 to form a smoke exhaust path located above the ceiling. However, the intermediate connecting transition piece 59 is fitted outside the smoke outlet seat 5 and the smoke exhaust pipe connector. Due to the limitation of the outer contour dimension D of the intermediate connecting transition piece 59, there are situations where installation is difficult or impossible for some ceilings with low height. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a range hood and its smoke outlet assembly, which can effectively reduce the maximum outer contour size of the smoke outlet assembly and enhance the installation adaptability of the smoke outlet assembly above the ceiling.

[0006] The specific technical solution of this utility model embodiment is as follows:

[0007] A smoke outlet seat assembly is provided, which is used to be horizontally placed above a suspended ceiling. The smoke outlet seat assembly includes a smoke outlet seat and a smoke exhaust pipe connector. The smoke outlet seat has a first smoke inlet and a first smoke outlet, the first smoke outlet having a first mating portion. The smoke exhaust pipe connector has a second smoke inlet and a second smoke outlet, the second smoke outlet being used to connect to a smoke exhaust pipe, the second smoke inlet having a second mating portion. The first smoke outlet and the second smoke inlet are threadedly connected or quick-connected through the first mating portion and the second mating portion.

[0008] In a preferred embodiment, the first smoke outlet and the second smoke inlet are threadedly connected by the first mating part and the second mating part, wherein one of the first mating part and the second mating part includes an external thread and the other includes an internal thread.

[0009] In a preferred embodiment, the first smoke outlet and the second smoke inlet are sealed together.

[0010] In a preferred embodiment, the smoke outlet assembly further includes a sealing structure disposed at the first smoke outlet and / or the second smoke inlet.

[0011] In a preferred embodiment, the first mating part is an external thread, the second mating part is an internal thread, the sealing structure includes a sealing ring, the second smoke inlet is provided with a limiting part, the limiting part is located downstream of the internal thread in the direction of smoke flow, and the sealing ring is located between the end of the first smoke outlet and the limiting part.

[0012] In a preferred embodiment, the first mating part is an internal thread, the second mating part is an external thread, the sealing structure includes a sealing ring, the first smoke outlet part is provided with a limiting part, the limiting part is located upstream of the internal thread in the direction of smoke flow, and the sealing ring is located between the end of the second smoke inlet part and the limiting part.

[0013] In a preferred embodiment, the second mating portion includes a first thread and a second thread that are offset along the extension direction of the exhaust pipe connector, wherein the starting positions of the first thread and the second thread are located on opposite sides of the second smoke inlet portion and / or the distances from the starting positions of the first thread and the second thread to the end of the second smoke inlet portion are the same or substantially the same.

[0014] In a preferred embodiment, the external thread and the internal thread are tapered threads.

[0015] In a preferred embodiment, the first smoke outlet and the second smoke inlet are quickly connected by the first docking part and the second docking part, wherein one of the first docking part and the second docking part is a deformable snap-fit ​​part, and the other is a snap-fit ​​mouth adapted to the snap-fit ​​part.

[0016] In a preferred embodiment, the first smoke outlet and / or the second smoke inlet further include a limiting structure, which is used to limit the relative position between the first smoke outlet and the second smoke inlet.

[0017] In a preferred embodiment, one of the first smoke outlet and the second smoke inlet is provided with a first hole, and the other of the first smoke outlet and the second smoke inlet is provided with a second hole. The limiting structure includes the first hole and the second hole. When the first smoke outlet and the second smoke inlet are connected in place through the first mating part and the second mating part, the first hole can coincide with the second hole. The limiting structure also includes a connector for connecting through the first hole and the second hole to limit the relative position between the first smoke outlet and the second smoke inlet.

[0018] In a preferred embodiment, the first hole is an adjustment hole, and the second hole is a mounting hole, wherein the area of ​​the adjustment hole is greater than the area of ​​the mounting hole, or the circumferential length of the adjustment hole is greater than the circumferential length of the mounting hole.

[0019] In a preferred embodiment, the mounting hole includes a threaded hole and / or a blind hole.

[0020] In a preferred embodiment, the second smoke inlet is sleeved outside the first smoke outlet, the first hole is disposed on the second smoke inlet, and the second hole is disposed on the first smoke outlet.

[0021] In a preferred embodiment, the second smoke inlet is disposed inside the first smoke outlet, the first hole is disposed on the first smoke outlet, and the second hole is disposed on the second smoke inlet.

[0022] In a preferred embodiment, after the first smoke outlet and the second smoke inlet are connected in place via the first mating part and the second mating part, the limiting structure is located at the front and / or lower part of the smoke outlet assembly.

[0023] In a preferred embodiment, after the first smoke outlet and the second smoke inlet are connected in place by the first docking part and the second docking part, the limiting structure is located at the front of the smoke outlet assembly, and the limiting structure is horizontal or the angle between the orientation of the limiting structure and the horizontal plane is not greater than 45°.

[0024] In a preferred embodiment, after the first smoke outlet and the second smoke inlet are connected in place via the first docking part and the second docking part, the limiting structure is located at the lower part of the smoke outlet seat assembly, and the limiting structure is vertically oriented or the angle between the orientation of the limiting structure and the vertical plane is not greater than 45°.

[0025] In a preferred embodiment, the limiting structure includes a first limiting structure and a second limiting structure, wherein the first limiting structure is located at the front of the smoke outlet assembly, the second limiting structure is located at the rear of the smoke outlet assembly, and / or, the first limiting structure is located at the lower part of the smoke outlet assembly, and the second limiting structure is located at the upper part of the smoke outlet assembly.

[0026] In a preferred embodiment, the first limiting structure and the second limiting structure are symmetrically arranged.

[0027] In a preferred embodiment, the first limiting structure is located at the front of the smoke outlet assembly, and the second limiting structure is located at the rear of the smoke outlet assembly. When the first smoke outlet and the second smoke inlet are connected in place via the first docking part and the second docking part, the first limiting structure is located at the front of the smoke outlet assembly, and the first limiting structure is horizontal or the angle between the orientation of the first limiting structure and the horizontal plane is not greater than 45°; the second limiting structure is located at the rear of the smoke outlet assembly, and the second limiting structure is horizontal or the angle between the orientation of the second limiting structure and the horizontal plane is not greater than 45°.

[0028] In a preferred embodiment, the first limiting structure is located at the lower part of the smoke outlet assembly, and the second limiting structure is located at the upper part of the smoke outlet assembly. After the first smoke outlet and the second smoke inlet are connected in place through the first docking part and the second docking part, the first limiting structure is located at the lower part of the smoke outlet assembly, and the first limiting structure is vertically oriented or the angle between the orientation of the first limiting structure and the vertical plane is not greater than 45°; the second limiting structure is located at the upper part of the smoke outlet assembly, and the second limiting structure is vertically oriented or the angle between the orientation of the second limiting structure and the vertical plane is not greater than 45°.

[0029] In a preferred embodiment, the limiting structure includes a first hole and a second hole, wherein one of the first smoke outlet and the second smoke inlet is provided with the first hole, and the other of the first smoke outlet and the second smoke inlet is provided with the second hole; or, the first smoke outlet and the second smoke inlet are threadedly connected by the first mating portion and the second mating portion, and the limiting structure includes a threaded protrusion in the first mating portion and a threaded recess in the second mating portion, or a threaded recess in the first mating portion and a threaded protrusion in the second mating portion.

[0030] In a preferred embodiment, the exhaust pipe includes: an inner pipe and an outer pipe disposed around the periphery of the inner pipe; the inner pipe has an opening on its side wall, or the inner pipe does not have an opening on its side wall.

[0031] In a preferred embodiment, the inner tube has no holes on its sidewall, and sound insulation cotton is provided between the inner tube and the outer tube.

[0032] In a preferred embodiment, the thickness of the sound-absorbing cotton is between 10 mm and 15 mm.

[0033] In a preferred embodiment, the second smoke inlet is a hollow ring, and a plurality of anti-slip parts are provided on the outer side wall of the second smoke inlet along the circumferential direction.

[0034] In a preferred embodiment, the anti-slip portion includes any one or a combination of the following: ribs or protrusions protruding from the outer wall of the second smoke inlet portion, or grooves or recesses recessed from the outer wall of the second smoke inlet portion.

[0035] In a preferred embodiment, the ribs and / or the grooves extend along the axial direction of the second smoke inlet; or, the ribs and / or the grooves are inclined and form a predetermined angle with the axial direction of the second smoke inlet.

[0036] A smoke outlet mounting assembly is provided, the assembly being horizontally positioned above a suspended ceiling. The assembly includes a smoke outlet seat and a smoke exhaust pipe connector. The smoke outlet seat has a first smoke inlet and a first smoke outlet, the first smoke outlet having a first connecting portion. The smoke exhaust pipe connector has a second smoke inlet and a second smoke outlet, the second smoke outlet being connected to a smoke exhaust pipe, the second smoke inlet having a second connecting portion. The first smoke outlet and the second smoke inlet are connected via the first connecting portion and the second connecting portion. The first smoke outlet and / or the second smoke inlet further include a limiting structure for limiting the relative position between the first smoke outlet and the second smoke inlet. The limiting structure includes a first limiting structure and a second limiting structure, the first limiting structure being located at the front of the smoke outlet mounting assembly, the second limiting structure being located at the rear of the smoke outlet mounting assembly, and / or, the first limiting structure being located at the lower part of the smoke outlet mounting assembly, the second limiting structure being located at the upper part of the smoke outlet mounting assembly.

[0037] In a preferred embodiment, the first limiting structure and the second limiting structure are symmetrically arranged.

[0038] In a preferred embodiment, the limiting structure includes a first hole and a second hole, one of the first smoke outlet and the second smoke inlet is provided with the first hole, and the other of the first smoke outlet and the second smoke inlet is provided with the second hole.

[0039] In a preferred embodiment, the first limiting structure is located at the front of the smoke outlet assembly, and the second limiting structure is located at the rear of the smoke outlet assembly. When the first smoke outlet and the second smoke inlet are connected in place via the first docking part and the second docking part, the first limiting structure is located at the front of the smoke outlet assembly, and the first limiting structure is horizontal or the angle between the orientation of the limiting structure and the horizontal plane is not greater than 45°; the second limiting structure is located at the rear of the smoke outlet assembly, and the second limiting structure is horizontal or the angle between the orientation of the second limiting structure and the horizontal plane is not greater than 45°.

[0040] In a preferred embodiment, the first limiting structure is located at the lower part of the smoke outlet assembly, and the second limiting structure is located at the upper part of the smoke outlet assembly. After the first smoke outlet and the second smoke inlet are connected in place through the first docking part and the second docking part, the first limiting structure is located at the lower part of the smoke outlet assembly, and the first limiting structure is vertically oriented or the angle between the orientation of the limiting structure and the vertical plane is not greater than 45°; the second limiting structure is located at the upper part of the smoke outlet assembly, and the second limiting structure is vertically oriented or the angle between the orientation of the second limiting structure and the vertical plane is not greater than 45°.

[0041] In a preferred embodiment, the exhaust pipe includes: an inner pipe and an outer pipe disposed around the periphery of the inner pipe; the inner pipe has an opening on its side wall, or the inner pipe does not have an opening on its side wall.

[0042] In a preferred embodiment, the inner tube has no holes on its sidewall, and sound insulation cotton is provided between the inner tube and the outer tube.

[0043] In a preferred embodiment, the first smoke outlet and the second smoke inlet are threadedly connected by the first mating part and the second mating part, wherein one of the first mating part and the second mating part includes an external thread and the other includes an internal thread.

[0044] In a preferred embodiment, the second smoke inlet is a hollow ring, and a plurality of anti-slip parts are provided on the outer side wall of the second smoke inlet along the circumferential direction.

[0045] In a preferred embodiment, the anti-slip portion includes any one or a combination of the following: ribs or protrusions protruding from the outer wall of the second smoke inlet portion, or grooves or recesses recessed from the outer wall of the second smoke inlet portion.

[0046] In a preferred embodiment, the ribs and / or the grooves extend along the axial direction of the second smoke inlet; or, the ribs and / or the grooves are inclined and form a predetermined angle with the axial direction of the second smoke inlet.

[0047] A range hood, the range hood comprising: any of the above-described smoke outlet assembly.

[0048] In a preferred embodiment, the range hood further includes a fan box, a smoke inlet pipe assembly, and a smoke collection chamber. The outlet of the fan box is located on the side plate of the fan box, and the smoke outlet assembly is located at the outlet of the fan box. The fan box, the smoke inlet pipe assembly, and the smoke collection chamber are connected sequentially from top to bottom.

[0049] The technical solution of this utility model has the following significant beneficial effects:

[0050] In this embodiment, the first mating part of the first smoke outlet on the smoke outlet seat and the second mating part of the second smoke inlet on the smoke exhaust pipe connector can be directly engaged to achieve a convenient and reliable connection between the smoke outlet seat and the smoke exhaust pipe connector. Compared with the prior art, which requires a third part (intermediate connecting transition part) to be screwed to the smoke exhaust pipe and the smoke outlet seat respectively, this intermediate connecting transition part is eliminated, which can effectively reduce the maximum outer contour size of the smoke outlet seat assembly and enhance the installation adaptability of the smoke outlet seat assembly above the ceiling.

[0051] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, embodiments of the present invention include many changes, modifications, and equivalents. Features described and / or shown for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description

[0052] The accompanying drawings described herein are for illustrative purposes only and are not intended to limit the scope of this invention in any way. Furthermore, the shapes and proportions of the components in the drawings are merely illustrative to aid in understanding the invention and do not specifically limit the shapes and proportions of the components. Those skilled in the art, under the guidance of this invention, can select various possible shapes and proportions to implement this invention according to specific circumstances.

[0053] Figure 1 This is a schematic diagram of the structure of a smoke outlet assembly for a range hood;

[0054] Figure 2 This is a schematic diagram of the structure of a smoke outlet assembly of a range hood provided in the embodiments of this application;

[0055] Figure 3 This is a front view of a range hood exhaust seat assembly provided in an embodiment of this application;

[0056] Figure 4 This is a left view of a range hood exhaust seat assembly provided in an embodiment of this application;

[0057] Figure 5 for Figure 4 A cross-sectional view (AA) of the smoke outlet assembly of a range hood;

[0058] Figure 6 This is an exploded view of a smoke outlet assembly of a range hood provided in the embodiments of this application;

[0059] Figure 7 This is a cross-sectional view of the smoke outlet assembly of a range hood after an explosion, provided in an embodiment of this application.

[0060] Figure 8 This is a schematic diagram of the exhaust pipe connection seat of a range hood exhaust seat assembly provided in the embodiments of this application;

[0061] Figure 9 This is a schematic diagram of another smoke outlet assembly of the range hood provided in the embodiments of this application;

[0062] Figure 10 This is a front view of another smoke outlet assembly of the range hood provided in the embodiments of this application;

[0063] Figure 11 for Figure 10 A BB cross-sectional view of the smoke outlet assembly of another type of range hood;

[0064] Figure 12 This is a schematic diagram of the structure of a range hood provided in the embodiments of this application.

[0065] Explanation of reference numerals in the attached figures:

[0066] 1. Fan box;

[0067] 2. Suspended ceiling;

[0068] 3. Smoke inlet pipe assembly;

[0069] 4. Smoke collection chamber;

[0070] 5. Smoke outlet seat; 51. First smoke outlet section; 511. External thread; 512. Mounting hole; 515. Bayonet;

[0071] 6. Exhaust pipe connector; 61. Second smoke inlet; 611. Internal thread; 612. Adjustment hole; 613. Rib; 614. Limiting part; 615. Snap-fit ​​part;

[0072] 7. Sealing ring;

[0073] 8. Connectors;

[0074] 9. Smoke exhaust pipe;

[0075] 91. Inner tube;

[0076] 92. Outer tube;

[0077] 93. Sound insulation cotton;

[0078] 59. Intermediate connecting transition piece. Detailed Implementation

[0079] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate this utility model and are not intended to limit the scope of this utility model. After reading this utility model, any modifications of this utility model in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0080] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0081] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0082] This utility model provides a range hood and its smoke outlet assembly, which can effectively reduce the maximum outer contour size of the smoke outlet assembly and enhance the installation adaptability of the smoke outlet assembly above the ceiling.

[0083] Please refer to the following for comprehensive information. Figures 2 to 12This application specification provides a range hood exhaust seat assembly, which is horizontally positioned above a suspended ceiling 2. The exhaust seat assembly may include an exhaust seat 5 and an exhaust pipe connector 6. The exhaust seat 5 has a first exhaust portion and a first exhaust portion 51, and the first exhaust portion 51 has a first connecting portion. The exhaust pipe connector 6 has a second exhaust portion 61 and a second exhaust portion, the second exhaust portion being used to connect to an exhaust pipe 9, and the second exhaust portion 61 having a second connecting portion. The first exhaust portion 51 and the second exhaust portion 61 are threadedly connected or quick-connected through the first connecting portion and the second connecting portion.

[0084] like Figure 12 As shown, in this embodiment, the smoke outlet assembly is horizontally positioned above the suspended ceiling 2. Specifically, the overall extension direction of the smoke outlet assembly can be horizontal, or it can be slightly inclined upwards or downwards relative to the horizontal. When the overall extension direction of the smoke outlet assembly is slightly inclined upwards or downwards, the angle between it and the horizontal plane is generally controlled within 45°. In the embodiments and accompanying drawings of this application, the extension direction of the smoke outlet assembly is mainly described as horizontal.

[0085] In this embodiment, the smoke outlet assembly horizontally positioned above the ceiling 2 cooperates with the smoke exhaust pipe 9 to form a smoke exhaust path above the ceiling 2, thereby guiding the smoke to a designated location, such as a public flue.

[0086] In this embodiment, the smoke outlet assembly may include a smoke outlet seat 5 and a smoke exhaust pipe connector 6.

[0087] Please refer to the following: Figure 6 , Figure 7 and Figure 12 The smoke outlet seat 5 can be installed at the outlet of the fan housing 1. The smoke outlet seat 5 can be a hollow shell with a first open end and a second open end. The smoke outlet seat 5 has a first smoke inlet and a first smoke outlet 51. The first smoke inlet is located near the outlet of the fan housing 1, and can be located near the first open end of the shell. The first smoke outlet 51 is located away from the outlet of the fan housing 1, and can be located near the second open end of the shell. The first smoke outlet 51 has a first mating portion for cooperating with the exhaust pipe connector 6.

[0088] Please refer to the following: Figure 6 , Figure 7 , Figure 8 and Figure 12The exhaust pipe connector 6 is used to connect the exhaust pipe 9 to the smoke outlet seat 5. The exhaust pipe connector 6 can be a hollow shell with openings at both ends. Specifically, the exhaust pipe connector 6 can have a second smoke inlet 61 and a second smoke outlet. The second smoke inlet 61 can be located near the opening of the smoke outlet seat 5. The second smoke outlet can be located away from the opening of the smoke outlet seat 5. The second smoke outlet is used to connect the exhaust pipe 9. The second smoke outlet can be detachably connected to the inlet end of the exhaust pipe 9, or it can be non-detachably disposed at the inlet end of the exhaust pipe 9, or it can be integrally formed into the inlet end of the exhaust pipe 9.

[0089] The second smoke inlet 61 has a second mating portion, which mates with the first mating portion of the smoke outlet seat 5 to achieve the installation and fixation of the smoke exhaust pipe connector 6 and the smoke outlet seat 5. The connection method between the smoke outlet seat 5 and the smoke exhaust pipe connector 6 varies depending on the mating form between the first and second mating portions. Specifically, the first smoke outlet 51 and the second smoke inlet 61 can be connected by threads or quick-connect fittings. That is, when the first and second mating portions are threaded, the first smoke outlet 51 and the second smoke inlet 61 are connected by threads; when the mating form is quick-connect fitting, the first smoke outlet 51 and the second smoke inlet 61 are connected by quick-connect fittings.

[0090] Of course, the first docking part and the second docking part can cooperate directly to achieve a relatively fixed form in other ways, and are not limited to the above description. Those skilled in the art may make other changes under the guidance of the technical essence of this application, but as long as the function and effect achieved are the same as or similar to this application, they should be covered within the protection scope of this application.

[0091] In this embodiment, by directly engaging the first mating portion of the first smoke outlet part 51 on the smoke outlet seat 5 with the second mating portion of the second smoke inlet part 61 of the smoke exhaust pipe connector 6, a convenient and reliable connection between the smoke outlet seat 5 and the smoke exhaust pipe connector 6 can be achieved. This is in contrast to the prior art, which requires a third component (such as...). Figure 1 The intermediate connecting transition piece 59) locks the smoke exhaust pipe connector 6 and the smoke outlet seat 5. Eliminating the intermediate connecting transition piece 59 can effectively reduce the maximum outer contour size of the smoke outlet seat assembly and enhance the installation adaptability of the smoke outlet seat assembly above the ceiling 2.

[0092] The following will provide examples with reference to the accompanying drawings and embodiments.

[0093] Please refer to the following: Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 In one embodiment, the first smoke outlet 51 and the second smoke inlet 61 are threadedly connected by the first mating part and the second mating part, one of the first mating part and the second mating part including an external thread 511 and the other including an internal thread 611.

[0094] In this embodiment, the first and second mating portions can be threaded. The positions of the internal and external threads 611 can be correspondingly set according to the relative positions of the first smoke outlet 51 and the second smoke inlet 61. For example, the second smoke inlet 61 can be fitted over the first smoke outlet 51, and correspondingly, the outer surface of the first smoke outlet 51 can be provided with an external thread 511, i.e., the first mating portion is an external thread 511; the inner surface of the second smoke inlet 61 can be provided with an internal thread 611, i.e., the second mating portion is an internal thread 611. Alternatively, the first smoke outlet 51 can be fitted over the second smoke inlet 61, and correspondingly, the inner surface of the first smoke outlet seat 5 can be provided with an internal thread 611, i.e., the first mating portion is an internal thread 611; the outer surface of the second smoke inlet 61 can be provided with an external thread 511, i.e., the second mating portion is an external thread 511.

[0095] In one embodiment, the first smoke outlet 51 and the second smoke inlet 61 are sealed together.

[0096] In this embodiment, in order to prevent the smoke from escaping outward through the connection between the first smoke outlet 51 and the second smoke inlet 61, the first smoke outlet 51 and the second smoke inlet 61 can be sealed together.

[0097] Specifically, the form of the sealing connection can include various forms. For example, it can be achieved by setting a sealing structure, or by the cooperation between the first smoke outlet 51 and the second smoke inlet 61.

[0098] For example, in one embodiment, the smoke outlet assembly may further include a sealing structure disposed at the first smoke outlet 51 and / or the second smoke inlet 61.

[0099] In this embodiment, the smoke outlet assembly may also be provided with a sealing structure, which is used to seal any possible mating gap between the first smoke outlet portion 51 and the second smoke inlet portion 61. Specifically, the sealing structure may be disposed between the first smoke outlet portion 51 and the second smoke inlet portion 61, contacting both the first smoke outlet portion 51 and the second smoke inlet portion 61; or, it may be disposed at the first smoke outlet portion 51, contacting the first smoke outlet portion 51; or, it may be disposed at the second smoke inlet portion 61, contacting the second smoke inlet portion 61. The specific form of the sealing structure may be a sealant, such as at least one sealing ring 7, or it may be a sealant, or it may be other forms.

[0100] like Figure 7 As shown, in a specific embodiment, the first mating part is an external thread 511, the second mating part is an internal thread 611, the sealing structure may include a sealing ring 7, the second smoke inlet 61 is provided with a limiting part 614, in the direction of smoke flow, the limiting part 614 is located downstream of the internal thread 611, and the sealing ring 7 is located between the end of the first smoke outlet 51 and the limiting part 614.

[0101] In this embodiment, the second smoke inlet 61 can be sleeved outside the first smoke outlet 51. The first mating part can be in the form of an external thread 511, and the second mating part can be in the form of an internal thread 611. The external thread 511 and the internal thread 611 mate to form a threaded connection structure. To enhance the sealing performance of the mating position of the first smoke outlet 51 and the second smoke inlet 61, a sealing element can be provided between the first smoke outlet 51 and the second smoke inlet 61. Specifically, the sealing element can be in the form of a sealing ring 7.

[0102] The second smoke inlet 61 is provided with a limiting part 614, which can be located downstream of the internal thread 611. When the first smoke outlet 51 and the second smoke inlet 61 are connected in place by the internal thread 611 and the external thread 511, the end of the first smoke outlet 51 can press the sealing ring 7 against the limiting part 614, so that the sealing ring 7 can be squeezed and reliably limited, thereby reliably sealing the first smoke outlet 51 and the second smoke inlet 61 and preventing the smoke from escaping outward from the gap between them.

[0103] The limiting part 614 can be in the form of a limiting step. Of course, the limiting part 614 can also be in the form of multiple protrusions spaced apart along the circumference, or the limiting part 614 can be in other forms. It is not limited to the above description. Those skilled in the art may make other changes under the guidance of the technical essence of this application. However, as long as the function and effect achieved are the same as or similar to this application, they should be covered within the protection scope of this application.

[0104] In another specific embodiment, the first mating part is an internal thread 611, the second mating part is an external thread 511, the sealing structure may include a sealing ring 7, the first smoke outlet part 51 is provided with a limiting part 614, in the direction of smoke flow, the limiting part 614 is located upstream of the internal thread 611, and the sealing ring 7 is located between the end of the second smoke inlet part 61 and the limiting part 614.

[0105] In this embodiment, the difference from the above embodiment is that the first smoke outlet 51 is sleeved on the outside of the second smoke inlet 61. Correspondingly, the first mating part on the first smoke outlet 51 is an internal thread 611, and the second mating part on the second smoke inlet 61 is an external thread 511. At this time, the limiting part 614 can be provided on the first smoke outlet 51 located on the outside. The limiting part 614 can be located upstream of the internal thread 611. When the first smoke outlet 51 and the second smoke inlet 61 are mated in place by the internal thread 611 and the external thread 511, the end of the second smoke inlet 61 can press the sealing ring 7 against the limiting part 614, so that the sealing ring 7 can be squeezed and reliably limited, thereby reliably sealing the first smoke outlet 51 and the second smoke inlet 61 and preventing the smoke from escaping outward from the mating gap between them.

[0106] In one embodiment, the external thread 511 and the internal thread 611 may be tapered threads.

[0107] In this embodiment, in addition to reliably sealing the first smoke outlet 51 and the second smoke inlet 61 by setting a sealing structure as described above, sealing can also be achieved through the structure of the threads themselves. Specifically, both the external thread 511 and the internal thread 611 can be tapered threads. During assembly, as the threads are screwed in, the internal thread 611 and the external thread 511 press against each other along the tapered direction, making the gap between the thread teeth smaller and smaller, eventually achieving a tight fit. That is, when the external thread 511 and the internal thread 611, which are tapered threads, are properly engaged, the thread contact surfaces between them can fit well, thereby achieving a sealed fit and preventing smoke from escaping from the gap between them.

[0108] In one embodiment, the second mating portion includes a first thread and a second thread that are offset along the extending direction of the exhaust pipe connector 6. The starting positions of the first thread and the second thread are located on opposite sides of the second smoke inlet portion 61 and / or the distances from the starting positions of the first thread and the second thread to the end of the second smoke inlet portion 61 are the same or substantially the same.

[0109] In this embodiment, the first smoke outlet 51 and the second smoke inlet 61 are connected by a threaded connection. Taking the second smoke inlet 61 as an example where it is sleeved outside the first smoke outlet 51, the first smoke outlet 51 may be provided with an external thread 511, and the second smoke inlet 61 may be provided with an internal thread 611. Specifically, the internal thread 611 formed by the second mating portion may include a first thread and a second thread that are offset along the extending direction of the exhaust pipe connecting seat 6.

[0110] The starting positions of the first and second threads can be located on opposite sides of the second smoke inlet 61. For example, the starting positions of the first and second threads can be symmetrically arranged at a circumferential interval of 180°. The ending positions of the first and second threads can also be spaced 180° apart in the circumferential direction.

[0111] In this embodiment, the distances from the starting positions of the first thread and the second thread to the end of the second smoke inlet 61 can be the same or substantially the same. Specifically, the thread parameters (including pitch, etc.) of the first thread and the second thread can be the same. "Substantially the same distances from the starting positions of the first thread and the second thread to the end of the second smoke inlet 61" means that there is a difference in the distances from the starting positions of the first thread and the second thread to the end of the second smoke inlet 61, and this difference is small, not exceeding a preset value. Specifically, the preset value can be one pitch.

[0112] When the second smoke inlet 61, which has a first thread and a second thread with different starting positions, is fitted onto the first smoke outlet 51, the external thread 511 on the first smoke outlet 51 randomly engages with one of the first thread and the second thread. During the assembly operation, the operator does not need to spend time and effort determining the starting point of engagement. The operator only needs to rotate 180° at most to make one of the first thread or the second thread on the second smoke inlet 61 contact the thread on the first smoke outlet 51, so that the assembly process can be started efficiently and smoothly. After the external thread 511 contacts the internal thread 611, only a small torque needs to be applied to perform the engagement operation, making the assembly process more labor-saving and convenient.

[0113] In this embodiment, the number of thread turns on the first smoke outlet 51 can be one turn, and the number of thread turns on the second smoke inlet 61 can be two turns. Of course, in this embodiment, it is not excluded that the number of thread turns on the second smoke inlet 61 and the first smoke outlet 51 can be adjusted.

[0114] Please refer to the following: Figure 9 , Figure 10 and Figure 11 In one embodiment, the first smoke outlet 51 and the second smoke inlet 61 are quickly connected by the first docking part and the second docking part, one of the first docking part and the second docking part is a deformable snap-fit ​​part 615, and the other is a bayonet 515 adapted to the snap-fit ​​part 615.

[0115] In this embodiment, the difference from the threaded connection embodiment described above is that the first smoke outlet 51 and the second smoke inlet 61 can be quickly connected via the first mating portion and the second mating portion. The first and second mating portions cooperate to form a quick-connect structure. Specifically, this quick-connect structure can be a snap-fit ​​type.

[0116] For example, the first mating part can be in the form of a bayonet 515, and the second mating part can be a deformable snap-fit ​​part 615. Specifically, there can be multiple bayonets 515, which can be arranged at intervals along the circumferential direction. The number and distribution of the snap-fit ​​parts 615 can be adapted to the bayonets 515. When the second smoke inlet 61 mates with the first smoke outlet 51, the snap-fit ​​part 615 deforms and extends into the bayonet 515. When the snap-fit ​​part 615 is fully engaged with the bayonet 515, it can return to its original position. Specifically, the snap-fit ​​part 615 can be in the form of a hook at its end. The bayonet 515 can be in the form of a slot or a hole. Of course, the combination of the first and second docking parts to form a quick-connect structure is not limited to the examples mentioned above. Those skilled in the art may make other changes based on the technical essence of this application, but as long as the functions and effects achieved are the same as or similar to those of this application, they should be covered within the scope of protection of this application.

[0117] In one embodiment, the first smoke outlet 51 and / or the second smoke inlet 61 may further include a limiting structure, which is used to limit the relative position between the first smoke outlet 51 and the second smoke inlet 61.

[0118] In this embodiment, the smoke outlet seat assembly may also be provided with a limiting structure at the mating position of the first smoke outlet part 51 and the second smoke inlet part 61. By providing this limiting structure, the reliability and stability of the connection between the smoke outlet seat 5 and the smoke exhaust pipe connecting seat 6 can be further improved.

[0119] For example, taking the first smoke outlet 51 and the second smoke inlet 61 as being connected by a first mating part and a second mating part by threads, in order to prevent the threaded connection from loosening due to relative rotation caused by external forces or other factors, a limiting structure can be set between the first smoke outlet 51 and the second smoke inlet 61. This limiting structure can provide a constraint to prevent the first smoke outlet 51 and the second smoke inlet 61 from rotating relative to each other.

[0120] The specific form of the limiting structure may include: threaded limiting structure, limiting pin limiting structure, slot limiting structure, or may include other limiting structures or combinations of multiple limiting structures.

[0121] In one embodiment, one of the first smoke outlet 51 and the second smoke inlet 61 is provided with a first hole, and the other of the first smoke outlet 51 and the second smoke inlet 61 is provided with a second hole. The limiting structure includes the first hole and the second hole. When the first smoke outlet 51 and the second smoke inlet 61 are connected in place through the first mating part and the second mating part, the first hole can coincide with the second hole. Figure 8 As shown, the limiting structure also includes a connector 8, which is used to connect through the first hole and the second hole to limit the relative position between the first smoke outlet 51 and the second smoke inlet 61.

[0122] In this embodiment, the limiting structure can be a mating form between the connector 8 and the hole. Specifically, taking the case where the second smoke inlet 61 is sleeved outside the first smoke outlet 51 as an example, the second smoke inlet 61 can be provided with a first hole, and the first smoke outlet 51 can be provided with a second hole. Specifically, the first hole can be an adjustment hole 612, and the second hole can be a mounting hole 512, the size of which is larger than that of the mounting hole 512.

[0123] Furthermore, the area of ​​the adjusting hole 612 is larger than the area of ​​the mounting hole 512, or the circumferential length of the adjusting hole 612 is larger than the circumferential length of the mounting hole 512. For example, the mounting hole 512 can specifically be a circular hole with a first size that is adapted to the connector 8. The adjusting hole 612 can be a circular hole with an area larger than the mounting hole 512, or other regularly or irregularly formed openings; when the center of the adjusting hole 612 is aligned with the center of the mounting hole 512, the mounting hole 512 can be completely covered by the adjusting hole 612. Or, as... Figure 8 As shown, the adjustment hole 612 can be an elongated hole with a circumferential length greater than the diameter of the mounting hole 512.

[0124] When the size of the adjustment hole 612 is larger than that of the mounting hole 512, the connector 8 can pass smoothly through the adjustment hole 612 without interference. When the size of the adjustment hole 612 is larger than that of the mounting hole 512, the second smoke inlet 61 and the first smoke outlet 51 can be connected, for example by threaded connection, with a certain adjustment margin, which helps to improve the convenience of initial installation, compensate for errors caused by manufacturing, and enhance the fault tolerance of assembly.

[0125] Furthermore, the adjustment hole 612 can be located outside the mounting hole 512. Specifically, when the second smoke inlet 61 is fitted outside the first smoke outlet 51, the first hole is located on the second smoke inlet 61, and the second hole is located on the first smoke outlet 51; or, when the second smoke inlet 61 passes through the inside of the first smoke outlet 51, the first hole is located on the first smoke outlet 51, and the second hole is located on the second smoke inlet 61. With this configuration, the adjustment hole 612 can be used as an observation hole to determine whether the second smoke inlet 61 and the first smoke outlet 51 are properly installed. Taking the connection between the second smoke inlet 61 and the first smoke outlet 51 via a first mating part and a second mating part as an example, when the internal thread 611 and the external thread 511 are connected in place or nearly in place, the mounting hole 512 will rotate into the area where the adjustment hole 612 is located, indicating that the second smoke inlet 61 and the first smoke outlet 51 are properly connected.

[0126] After the first smoke outlet 51 and the second smoke inlet 61 are connected in place via the first mating part and the second mating part, the connector 8 can be inserted into the mounting hole 512 through the adjusting hole 612. The specific form of the connector 8 can be adapted to the form of the mounting hole 512. The mounting hole 512 can include a threaded hole and / or a blind hole. For example, the mounting hole 512 can be in the form of a blind hole, which can prevent the fumes flowing through the fume holder assembly from flowing out through the gap between the connector 8 and the mounting hole 512. Furthermore, the inner surface of the blind hole can be provided with an internal thread 611, and the connector 8 can specifically be in the form of a screw. When the screw is engaged with the blind hole provided with the internal thread 611, a reliable fastening effect can be achieved to reliably limit the relative position between the first smoke outlet 51 and the second smoke inlet 61.

[0127] In some embodiments, when the first smoke outlet 51 and the second smoke inlet 61 are connected in place via the first docking portion and the second docking portion, the limiting structure is located at the front and / or lower part of the smoke outlet assembly.

[0128] Generally, when installing a split-type range hood, the smoke outlet seat 5 is first installed on the fan box 1. Then, the fan box 1 with the smoke outlet seat 5 extends through the ceiling 2 to above the ceiling 2. Next, the exhaust pipe connector 6 is installed above the smoke outlet seat 5. Considering the limited space between the exhaust pipe connector 6 and the smoke outlet seat 5 when subsequently installing the limiting structure, the position of the limiting structure can be restricted to a position convenient for operation after the first smoke outlet 51 and the second smoke inlet 61 are connected in place via the first and second connecting parts. For example, the limiting structure can be the front and / or lower part of the smoke outlet seat assembly.

[0129] Specifically, taking the case where the first smoke outlet 51 and the second smoke inlet 61 are connected by a first mating part and a second mating part threaded together, and the limiting structure is a form of connection 8 and hole fitting, with the second smoke inlet 61 fitted outside the first smoke outlet 51 as an example. The second smoke inlet 61 may have a first hole, and the first smoke outlet 51 may have a second hole. The second hole on the first smoke outlet 51 is located at the front and / or lower part. When the second smoke inlet 61 is fitted onto the first smoke outlet 51 and rotated into place, the first hole on the second smoke inlet 61 can coincide with the second hole, also located at the front and / or lower part. This facilitates the operator in installing the connection 8 at the front and / or lower part.

[0130] The first hole can be matched with the threaded position on the second smoke inlet 61, thereby ensuring that when the second smoke inlet 61 rotates relative to the first smoke outlet 51, the first hole and the second hole can coincide. Specifically, rotating the second smoke inlet 61 relative to the first smoke outlet 51 means that after rotating the second smoke inlet 61 relative to the first smoke outlet 51 by a predetermined angle, it can move a predetermined distance axially, ensuring the reliability of the mating position of the first smoke outlet 51 and the second smoke inlet 61. For example, when a seal is present, the end of the first smoke outlet 51 can compress the seal by a predetermined distance. The specific position of the first hole relative to the two turns of thread on the second smoke inlet 61, and the specific rotation angle of the second smoke inlet 61 relative to the first smoke outlet 51, are not uniquely limited in this application, as long as the reliability of the mating position is ensured and the first hole and the second hole can coincide. In this case, the first hole can also be located at the front and / or the bottom.

[0131] In one specific embodiment, after the first smoke outlet 51 and the second smoke inlet 61 are connected in place through the first docking part and the second docking part, the limiting structure is located at the front of the smoke outlet seat assembly, and the limiting structure is horizontal or the angle between the orientation of the limiting structure and the horizontal plane is not greater than 45°.

[0132] In this embodiment, after the first smoke outlet 51 and the second smoke inlet 61 are connected in place via the first mating part and the second mating part, the limiting structure can be located at the front of the smoke outlet assembly. Specifically, this front part can be the side facing the user. At this time, the limiting structure can be completely horizontal, or the angle between the orientation of the limiting structure and the horizontal plane can be within 45°, thereby facilitating installation operations by the user at the front.

[0133] In one specific embodiment, after the first smoke outlet 51 and the second smoke inlet 61 are connected in place through the first docking part and the second docking part, the limiting structure is located at the lower part of the smoke outlet seat assembly, and the limiting structure is vertically oriented or the angle between the orientation of the limiting structure and the vertical plane is not greater than 45°.

[0134] In this embodiment, after the first smoke outlet 51 and the second smoke inlet 61 are connected in place via the first and second mating parts, the limiting structure can be located at the lower part of the smoke outlet assembly. Specifically, this lower part can be located on the side closer to the ceiling 2 in the height direction. At this time, the limiting structure can be completely vertical, or the angle between the orientation of the limiting structure and the vertical plane can be within 45°, thereby facilitating installation operations by the user at the lower part.

[0135] In one embodiment, the limiting structure includes a first limiting structure and a second limiting structure, wherein the first limiting structure is located at the front of the smoke outlet assembly, the second limiting structure is located at the rear of the smoke outlet assembly, and / or, the first limiting structure is located at the lower part of the smoke outlet assembly, and the second limiting structure is located at the upper part of the smoke outlet assembly.

[0136] In this embodiment, the limiting structure may include multiple sets along the circumference of the smoke outlet assembly, such as a first limiting structure and a second limiting structure. The first and second limiting structures may be distributed on different sides of the smoke outlet assembly. For example, the first limiting structure may be located at the front of the smoke outlet assembly, and the second limiting structure may be located at the rear of the smoke outlet assembly. Alternatively, the first limiting structure may be located at the upper part of the smoke outlet assembly, and the second limiting structure may be located at the lower part of the smoke outlet assembly; or, the first limiting structure may be located at both the front and upper parts of the smoke outlet assembly, and the second limiting structure may be located at both the rear and lower parts of the smoke outlet assembly.

[0137] In a specific installation scenario, the location of the exhaust pipe 9 (e.g., the location of the common flue) may differ for different users. In some scenarios, the common flue may be located on the left side of the fan box 1, while in others it may be located on the right side. To flexibly address these different installation orientation requirements, the limiting structure can be configured to include a first limiting structure and a second limiting structure.

[0138] When the common flue is located on the right side of the fan box 1, the first limiting structure currently located at the front (with the second limiting structure located at the rear) can be used to limit the smoke outlet seat 5 and the exhaust pipe connection seat 6. When the common flue is located on the left side of the fan box 1, the smoke outlet seat assembly is essentially rotated 180° relative to the previous installation scenario, with the second limiting structure now located at the front and the first limiting structure at the rear. The second limiting structure currently located at the front (with the first limiting structure located at the rear) can then be used to limit the smoke outlet seat 5 and the exhaust pipe connection seat 6. Regardless of which side of the fan box 1 the common flue is located on, the operator can operate from a convenient installation location, such as by setting up the connector 8 to form the final limiting structure.

[0139] In one specific embodiment, taking the first smoke outlet 51 and the second smoke inlet 61 as an example, which are connected by a first mating part and a second mating part threadedly, the second mating part on the second smoke inlet 61 may include two turns of thread (a first turn of thread and a second turn of thread). When the second smoke inlet 61 is mated with the first smoke outlet 51, it is uncertain which turn of thread actually engages with the thread on the first smoke outlet 51. When the second smoke inlet 61 and the first smoke outlet 51 are threadedly connected, to ensure that regardless of which thread on the second smoke inlet 61 engages with the thread on the first smoke outlet 51, the second smoke inlet 61 has a first hole that can coincide with the second hole on the first smoke outlet 51, two first holes can be provided on the second smoke inlet 61, and the two first holes can be distributed on different sides of the second smoke inlet 61.

[0140] For example, when the first thread on the second smoke inlet 61 mates with the first smoke outlet 51, one of the first holes can be located in a position convenient for the operator to operate (e.g., at the front or lower part), while the other first hole can be located in a position relatively inconvenient for the operator to operate. Similarly, when the second thread on the second smoke inlet 61 mates with the first smoke outlet 51, another of the first holes can be located in a position convenient for the operator to operate (e.g., at the front or lower part), while the other first hole can be located in a position relatively inconvenient for the operator to operate.

[0141] This configuration ensures that no matter which thread on the second smoke inlet 61 randomly mates with the first smoke outlet 51, the first hole will always coincide with the second hole on the first smoke outlet 51, allowing the connector 8 to be installed in a location convenient for the operator.

[0142] In one specific embodiment, the first limiting structure and the second limiting structure are symmetrically arranged. Specifically, the first limiting structure and the second limiting structure can be arranged at a 180° interval along the circumferential direction to better adapt to the above-mentioned situations where left and right directions need to be reversed or different threads need to be randomly installed.

[0143] Of course, in this embodiment, the first limiting structure and the second limiting structure do not have to be strictly symmetrical in the circumferential direction, as long as they are located opposite each other at the top and bottom along the horizontal plane, or opposite each other at the front and back along the vertical plane.

[0144] In one embodiment, the limiting structure includes a first hole and a second hole, wherein one of the first smoke outlet portion 51 and the second smoke inlet portion 61 is provided with the first hole, and the other of the first smoke outlet portion 51 and the second smoke inlet portion 61 is provided with the second hole.

[0145] In this embodiment, the limiting structure can be a mating form between the connector 8 and the hole. Specifically, taking the case where the second smoke inlet 61 is sleeved outside the first smoke outlet 51 as an example, the second smoke inlet 61 can be provided with a first hole, and the first smoke outlet 51 can be provided with a second hole. The specific forms of the first hole and the second hole can be referred to the detailed description of the above embodiment, and will not be elaborated further here.

[0146] In one embodiment, the first limiting structure is located at the front of the smoke outlet assembly, and the second limiting structure is located at the rear of the smoke outlet assembly. When the first smoke outlet part 51 and the second smoke inlet part 61 are connected in place through the first docking part and the second docking part, the first limiting structure is located at the front of the smoke outlet assembly, and the first limiting structure is horizontal or the angle between the orientation of the first limiting structure and the horizontal plane is not greater than 45°; the second limiting structure is located at the rear of the smoke outlet assembly, and the second limiting structure is horizontal or the angle between the orientation of the second limiting structure and the horizontal plane is not greater than 45°.

[0147] In this embodiment, the limiting structure may include a first limiting structure located at the front of the smoke outlet assembly and a second limiting structure located at the rear of the smoke outlet assembly. Taking the fitting of the connector 8 and the hole as an example, the first smoke outlet portion 51 may be provided with a second hole, which may be distributed at the front and rear of the first smoke outlet portion 51. The second hole located at the front is horizontal or the angle between its orientation and the horizontal plane is not greater than 45°; the second hole located at the rear is horizontal or the angle between its orientation and the horizontal plane is not greater than 45°. The second smoke inlet portion 61 may be provided with a first hole, which may be distributed circumferentially on different sides of the second smoke inlet portion 61.

[0148] After the first smoke outlet 51 and the second smoke inlet 61 are connected in place via the first docking part and the second docking part, specifically, after the second smoke inlet 61 moves a predetermined distance axially relative to the first smoke outlet 51, one of the first holes on the second smoke inlet 61 can rotate to coincide with the second hole located at the front, and the other first hole can coincide with the second hole located at the rear. Subsequently, a connector 8 can be provided at the positions of the overlapping second and first holes at the front to form a limiting structure that can effectively limit the movement of the smoke outlet seat 5 and the smoke exhaust pipe connecting seat 6.

[0149] In one embodiment, the first limiting structure is located at the lower part of the smoke outlet assembly, and the second limiting structure is located at the upper part of the smoke outlet assembly. When the first smoke outlet part 51 and the second smoke inlet part 61 are connected in place through the first docking part and the second docking part, the first limiting structure is located at the lower part of the smoke outlet assembly, and the first limiting structure is vertically oriented or the angle between the orientation of the first limiting structure and the vertical plane is not greater than 45°; the second limiting structure is located at the upper part of the smoke outlet assembly, and the second limiting structure is vertically oriented or the angle between the orientation of the second limiting structure and the vertical plane is not greater than 45°.

[0150] In this embodiment, the limiting structure may include a first limiting structure located on the upper part of the smoke outlet assembly and a second limiting structure located on the lower part of the smoke outlet assembly. Taking the fitting of the connector 8 and the hole as an example, the limiting structure may have a second hole on the first smoke outlet portion 51, which may be distributed on the upper and lower parts of the first smoke outlet portion 51. The second hole located on the upper part is vertically oriented or the angle between the orientation of the upper second hole and the vertical plane is not greater than 45°; the second hole located on the lower part is vertically oriented or the angle between the orientation of the lower second hole and the vertical plane is not greater than 45°. The second smoke inlet portion 61 may have a first hole, which may be distributed circumferentially on different sides of the second smoke inlet portion 61.

[0151] After the first smoke outlet 51 and the second smoke inlet 61 are connected in place via the first docking part and the second docking part, specifically, after the second smoke inlet 61 moves a predetermined distance axially relative to the first smoke outlet 51, one of the first holes on the second smoke inlet 61 can rotate to coincide with the second hole located at the lower part, and the other first hole can coincide with the second hole located at the upper part. Subsequently, a connecting member 8 can be provided at the positions of the mutually coinciding second and first holes located at the lower part to form a limiting structure that can effectively limit the movement of the smoke outlet seat 5 and the smoke exhaust pipe connecting seat 6.

[0152] It should be noted that the actual number of sets of limiting structures forming an effective limit on the smoke outlet seat 5 and the smoke exhaust pipe connecting seat 6 can be one set. After the smoke outlet seat 5 and the smoke exhaust pipe connecting seat 6 are connected in place, there may be multiple sets of overlapping first and second holes. At least one set of overlapping first and second holes is located in a position convenient for the operator to operate, such as at the bottom or front. During actual operation, the operator can choose to install the connecting piece 8 in this convenient position within the set of overlapping first and second holes.

[0153] In another embodiment, the first smoke outlet 51 and the second smoke inlet 61 are threadedly connected by the first mating portion and the second mating portion, and the limiting structure includes a threaded protrusion in the first mating portion and a threaded recess in the second mating portion, or a threaded recess in the first mating portion and a threaded protrusion in the second mating portion.

[0154] In the embodiment where the first smoke outlet 51 and the second smoke inlet 61 are threadedly connected via the first and second mating portions, the limiting structure can be integrated into the thread. Specifically, the limiting structure can be a protrusion on one thread and a recess on the other thread. When the two threads are rotated into place, the protrusion can engage with the recess, thus forming the limiting structure. This embodiment, by integrating the limiting structure into the thread, achieves a self-locking function. Relatively speaking, the overall structure is compact and easy to operate, requiring no additional openings or connectors. When the smoke outlet assembly is installed above the ceiling 2, it further reduces the installation space requirements above the ceiling 2.

[0155] In one embodiment, the exhaust pipe 9 includes: an inner pipe 91 and an outer pipe 92 disposed around the inner pipe 91; the inner pipe 91 has an opening on its side wall, or the inner pipe 91 has no opening on its side wall.

[0156] In this embodiment, the exhaust pipe 9 may include an inner pipe and an outer pipe 92. The cross-section of the exhaust pipe 9 may be circular, rectangular, or may have other regular or irregular structures; this application does not impose specific limitations here. In the embodiments and accompanying drawings of this application, the circular cross-section of the exhaust pipe 9 is mainly used as an example for illustration.

[0157] The inner tube 91 and the outer tube can be spaced apart to form an annular cavity. This design allows the exhaust pipe 9 to have better noise reduction performance compared to a single-layer tube.

[0158] The inner tube 91 may or may not have openings on its sidewall. In one embodiment, when the inner tube 91 has openings on its sidewall, sound-absorbing cotton can be placed in the annular cavity between the inner tube 91 and the outer tube 92. When the noise generated after the fan starts propagates into the exhaust pipe 9, it can be reduced by the sound-absorbing cotton through the openings, thereby reducing the noise in the downstream section of the exhaust vent and improving the noise reduction performance of the range hood.

[0159] like Figure 5 As shown, in another embodiment, the inner tube 91 has no holes on its sidewall, and sound insulation cotton 93 is provided between the inner tube 91 and the outer tube 92.

[0160] When no openings are provided on the side wall of the inner tube 91, the inner wall surface of the inner tube 91 is a closed columnar surface, forming a flow channel for flue gas. Sound-insulating cotton 93 can be installed in the annular cavity between the inner tube 91 and the outer tube 92. When the noise generated after the fan starts propagates into the flow channel of the exhaust pipe 9, it can be reduced by the sound-insulating cotton 93, thereby reducing the noise downstream of the exhaust outlet during fan operation and improving the noise reduction performance of the range hood.

[0161] The thickness of the sound-insulating cotton 93 is between 10 mm and 15 mm. The specific thickness of the sound-insulating cotton 93 can be determined comprehensively based on the distance between the inner tube 91 and the outer tube 92, as well as the fixing method of the sound-insulating cotton 93. For example, if the sound-insulating cotton 93 is bonded to the inner tube 91 and / or the outer tube 92, then the overall thickness of the sound-insulating cotton 93 depends on the distance between the inner tube 91 and the outer tube 92. Furthermore, when the sound-insulating cotton 93 is installed between the inner tube 91 and the outer tube 92, it can be in a compressed state. In this case, the initial thickness of the sound-insulating cotton 93 can be slightly greater than the distance between the inner tube 91 and the outer tube 92.

[0162] like Figure 8As shown, in one embodiment, the second smoke inlet 61 is generally hollow and annular, and a plurality of anti-slip parts are provided on the outer side wall of the second smoke inlet 61 along the circumferential direction.

[0163] In this embodiment, the second smoke inlet 61 can be a cylindrical shape with openings at both ends. Multiple anti-slip parts can be provided on the outer wall of the second smoke inlet 61 along the circumference. When the operator rotates and connects the second smoke inlet 61 with the first smoke outlet 51, the friction can be increased by contacting the anti-slip parts, thereby facilitating the quick connection and fixation of the second smoke inlet 61 with the first smoke outlet 51.

[0164] The anti-slip part may include any one or a combination of the following: a rib 613 or a protrusion on the outer side wall of the second smoke inlet 61, or a groove or a recess on the outer side wall of the second smoke inlet 61.

[0165] The anti-slip part can take the form of a rib 613, a protrusion, a groove, a recess, etc. Alternatively, the anti-slip part can also be a grid formed on the outer side wall of the second smoke inlet 61. Of course, the anti-slip part can also take other forms that can improve the friction coefficient of the outer side wall of the second smoke inlet 61. It is not limited to the above description. Those skilled in the art may make other changes under the guidance of the technical essence of this application. However, as long as the function and effect achieved are the same as or similar to this application, they should be covered within the protection scope of this application.

[0166] In one specific embodiment, the rib 613 and / or the groove extends along the axial direction of the second smoke inlet 61; or, the rib 613 and / or the groove are inclined and form a predetermined angle with the axial direction of the second smoke inlet 61.

[0167] In this embodiment, taking the anti-slip part as a rib 613 as an example, the rib 613 can extend along the axial direction of the second smoke inlet 61 as a whole. Alternatively, the rib can be inclined and form a predetermined angle with the axial direction of the second smoke inlet 61. When the operator holds the anti-slip part and connects the smoke exhaust pipe connector 6 to the smoke outlet seat 5, the force applied by the operator can be decomposed into two components. One component is perpendicular to the axial direction of the second smoke inlet 61, causing the smoke exhaust pipe connector 6 to rotate; the other component is parallel to the axial direction of the second smoke inlet 61, causing the smoke exhaust pipe connector 6 to move closer to the smoke outlet seat 5, thereby efficiently connecting the smoke exhaust pipe connector 6 to the smoke outlet seat 5 as a whole.

[0168] Furthermore, when the anti-slip part is a groove, its setting method and the corresponding effect are similar to those of the above-mentioned rib 613, and will not be described again here.

[0169] In this embodiment of the application, a smoke outlet seat assembly is also provided. The smoke outlet seat assembly is used to be horizontally placed above the suspended ceiling 2. The smoke outlet seat assembly includes: a smoke outlet seat 5 and a smoke exhaust pipe connector 6. The smoke outlet seat 5 has a first smoke inlet and a first smoke outlet 51. The first smoke outlet 51 has a first connecting portion. The smoke exhaust pipe connector 6 has a second smoke inlet 61 and a second smoke outlet 61. The second smoke outlet 51 is used to connect to the smoke exhaust pipe 9. The second smoke inlet 61 has a second connecting portion. The first smoke outlet 51 and the second smoke inlet 61 are connected by the first connecting portion and the second smoke outlet 9. The first smoke outlet portion 51 and / or the second smoke inlet portion 61 are connected to the second docking portion. The first smoke outlet portion 51 and / or the second smoke inlet portion 61 further include a limiting structure. The limiting structure is used to limit the relative position between the first smoke outlet portion 51 and the second smoke inlet portion 61. The limiting structure includes a first limiting structure and a second limiting structure. The first limiting structure is located at the front of the smoke outlet seat assembly, and the second limiting structure is located at the rear of the smoke outlet seat assembly. And / or, the first limiting structure is located at the lower part of the smoke outlet seat assembly, and the second limiting structure is located at the upper part of the smoke outlet seat assembly.

[0170] In this embodiment, the smoke outlet assembly is horizontally positioned above the suspended ceiling 2. Specifically, the overall extension direction of the smoke outlet assembly can be horizontal, or it can be slightly inclined upwards or downwards relative to the horizontal. When the overall extension direction of the smoke outlet assembly is slightly inclined upwards or downwards, the angle between it and the horizontal plane is generally controlled within 45°. In the embodiments and accompanying drawings of this application, the extension direction of the smoke outlet assembly is mainly described as horizontal.

[0171] In this embodiment, the smoke outlet assembly horizontally positioned above the ceiling 2 cooperates with the smoke exhaust pipe 9 to form a smoke exhaust path above the ceiling 2, thereby guiding the smoke to a designated location, such as a public flue.

[0172] In this embodiment, the smoke outlet assembly may include a smoke outlet seat 5 and a smoke exhaust pipe connector 6.

[0173] The smoke outlet seat 5 can be installed at the outlet of the fan housing 1. The smoke outlet seat 5 can be a hollow shell with a first open end and a second open end. The smoke outlet seat 5 has a first smoke inlet and a first smoke outlet 51. The first smoke inlet is located near the outlet of the fan housing 1, and can be located near the first open end of the shell. The first smoke outlet 51 is located away from the outlet of the fan housing 1, and can be located near the second open end of the shell. The first smoke outlet 51 has a first mating portion for cooperating with the exhaust pipe connector 6.

[0174] The exhaust pipe connector 6 is used to connect the exhaust pipe 9 to the smoke outlet seat 5. The exhaust pipe connector 6 can be a hollow shell with openings at both ends. Specifically, the exhaust pipe connector 6 can have a second smoke inlet 61 and a second smoke outlet. The second smoke inlet 61 can be located near the opening of the smoke outlet seat 5. The second smoke outlet can be located away from the opening of the smoke outlet seat 5. The second smoke outlet is used to connect the exhaust pipe 9. The second smoke outlet can be detachably connected to the inlet end of the exhaust pipe 9, or it can be non-detachably located at the inlet end of the exhaust pipe 9, or it can be integrally formed into the inlet end of the exhaust pipe 9.

[0175] The second smoke inlet 61 has a second mating portion, which mates with the first mating portion of the smoke outlet seat 5 to achieve the installation and fixation of the smoke exhaust pipe connector 6 and the smoke outlet seat 5. The connection method between the smoke outlet seat 5 and the smoke exhaust pipe connector 6 varies depending on the mating form between the first and second mating portions. Specifically, the first smoke outlet 51 and the second smoke inlet 61 can be connected by threads or quick-connect fittings. That is, when the first and second mating portions are threaded, the first smoke outlet 51 and the second smoke inlet 61 are connected by threads; when the mating form is quick-connect fitting, the first smoke outlet 51 and the second smoke inlet 61 are connected by quick-connect fittings.

[0176] Of course, the first docking part and the second docking part can cooperate directly to achieve a relatively fixed form in other ways, and are not limited to the above description. Those skilled in the art may make other changes under the guidance of the technical essence of this application, but as long as the function and effect achieved are the same as or similar to this application, they should be covered within the protection scope of this application.

[0177] In this embodiment, the focus is on the example of the first smoke outlet 51 and the second smoke inlet 61 being connected by threads through the first and second mating parts. One of the first and second mating parts includes an external thread 511, and the other includes an internal thread 611. Specifically, the mating relationship between the first and second mating parts, the specific arrangement of the threads, etc., can be referred to the detailed description of the above embodiment, and will not be repeated here.

[0178] In this embodiment, the smoke outlet seat assembly may also be provided with a limiting structure at the mating position of the first smoke outlet part 51 and the second smoke inlet part 61. By providing this limiting structure, the reliability and stability of the connection between the smoke outlet seat 5 and the smoke exhaust pipe connecting seat 6 can be further improved.

[0179] For example, taking the first smoke outlet 51 and the second smoke inlet 61 as being connected by a first mating part and a second mating part by threads, in order to prevent the threaded connection from loosening due to relative rotation caused by external forces or other factors, a limiting structure can be set between the first smoke outlet 51 and the second smoke inlet 61. This limiting structure can provide a constraint to prevent the first smoke outlet 51 and the second smoke inlet 61 from rotating relative to each other.

[0180] The specific form of the limiting structure may include: threaded limiting structure, limiting pin limiting structure, slot limiting structure, or may include other limiting structures or combinations of multiple limiting structures.

[0181] In this embodiment, the limiting structure may include multiple sets along the circumference of the smoke outlet assembly, such as a first limiting structure and a second limiting structure. The first and second limiting structures may be distributed on different sides of the smoke outlet assembly. For example, the first limiting structure may be located at the front of the smoke outlet assembly, and the second limiting structure may be located at the rear of the smoke outlet assembly. Alternatively, the first limiting structure may be located at the upper part of the smoke outlet assembly, and the second limiting structure may be located at the lower part of the smoke outlet assembly; or, the first limiting structure may be located at both the front and upper parts of the smoke outlet assembly, and the second limiting structure may be located at both the rear and lower parts of the smoke outlet assembly.

[0182] In this embodiment, the limiting structure is illustrated primarily by taking the fit between the connector 8 and the hole as an example. Specifically, taking the case where the second smoke inlet 61 is fitted outside the first smoke outlet 51 as an example, the second smoke inlet 61 may be provided with a first hole, and the first smoke outlet 51 may be provided with a second hole. The specific forms of the first hole and the second hole can be referred to the detailed description of the above embodiment, and will not be elaborated further here.

[0183] In a specific installation scenario, the location of the connecting exhaust pipe 9 (e.g., the location of the common flue) may differ for different users. In some scenarios, the common flue may be located on the left side of the fan box 1, while in others it may be located on the right side. To flexibly address these different installation orientation requirements, the limiting structure can be configured to include a first limiting structure and a second limiting structure. The first limiting structure and the second limiting structure are located on different sides of the exhaust seat assembly.

[0184] When the common flue is located on the right side of the fan box 1, the first limiting structure currently located at the front (with the second limiting structure located at the rear) can be used to limit the smoke outlet seat 5 and the exhaust pipe connection seat 6. When the common flue is located on the left side of the fan box 1, the smoke outlet seat assembly is essentially rotated 180° relative to the previous installation scenario, with the second limiting structure now located at the front and the first limiting structure at the rear. In this case, the second limiting structure currently located at the front (with the first limiting structure located at the rear) can be used to limit the smoke outlet seat 5 and the exhaust pipe connection seat 6. Regardless of which side of the fan box 1 the common flue is located on, the operator can operate from a convenient installation position, such as by setting up the connector 8 to form the final limiting structure.

[0185] In one specific embodiment, taking the first smoke outlet 51 and the second smoke inlet 61 as an example, which are connected by a first mating part and a second mating part threadedly, the second mating part on the second smoke inlet 61 may include two turns of thread (a first turn of thread and a second turn of thread). When the second smoke inlet 61 is mated with the first smoke outlet 51, it is uncertain which turn of thread actually engages with the thread on the first smoke outlet 51. When the second smoke inlet 61 and the first smoke outlet 51 are threadedly connected, to ensure that regardless of which thread on the second smoke inlet 61 engages with the thread on the first smoke outlet 51, the second smoke inlet 61 has a first hole that can coincide with the second hole on the first smoke outlet 51, two first holes can be provided on the second smoke inlet 61, and the two first holes can be distributed on different sides of the second smoke inlet 61.

[0186] For example, when the first thread on the second smoke inlet 61 mates with the first smoke outlet 51, one of the first holes can be located in a position convenient for the operator to operate (e.g., at the front or lower part), while the other first hole can be located in a position relatively inconvenient for the operator to operate. Similarly, when the second thread on the second smoke inlet 61 mates with the first smoke outlet 51, another of the first holes can be located in a position convenient for the operator to operate (e.g., at the front or lower part), while the other first hole can be located in a position relatively inconvenient for the operator to operate.

[0187] This configuration ensures that no matter which thread on the second smoke inlet 61 randomly mates with the first smoke outlet 51, the first hole will always coincide with the second hole on the first smoke outlet 51, allowing the connector 8 to be installed in a location convenient for the operator.

[0188] In one specific embodiment, the first limiting structure and the second limiting structure are symmetrically arranged. Specifically, the first limiting structure and the second limiting structure can be arranged at a 180° interval along the circumferential direction to better adapt to the above-mentioned situations where left and right directions need to be reversed or different threads need to be randomly installed.

[0189] Of course, in this embodiment, the first limiting structure and the second limiting structure do not have to be strictly symmetrical in the circumferential direction, as long as they are located opposite each other at the top and bottom along the horizontal plane, or opposite each other at the front and back along the vertical plane.

[0190] In one embodiment, the first limiting structure is located at the front of the smoke outlet assembly, and the second limiting structure is located at the rear of the smoke outlet assembly. When the first smoke outlet part 51 and the second smoke inlet part 61 are connected in place through the first docking part and the second docking part, the first limiting structure is located at the front of the smoke outlet assembly, and the first limiting structure is horizontal or the angle between the orientation of the first limiting structure and the horizontal plane is not greater than 45°; the second limiting structure is located at the rear of the smoke outlet assembly, and the second limiting structure is horizontal or the angle between the orientation of the second limiting structure and the horizontal plane is not greater than 45°.

[0191] In this embodiment, the limiting structure may include a first limiting structure located at the front of the smoke outlet assembly and a second limiting structure located at the rear of the smoke outlet assembly. Taking the fitting of the connector 8 and the hole as an example, the first smoke outlet portion 51 may be provided with a second hole, which may be distributed at the front and rear of the first smoke outlet portion 51. The second hole located at the front is horizontal or the angle between its orientation and the horizontal plane is not greater than 45°; the second hole located at the rear is horizontal or the angle between its orientation and the horizontal plane is not greater than 45°. The second smoke inlet portion 61 may be provided with a first hole, which may be distributed circumferentially on different sides of the second smoke inlet portion 61.

[0192] After the first smoke outlet 51 and the second smoke inlet 61 are connected in place via the first docking part and the second docking part, specifically, after the second smoke inlet 61 moves a predetermined distance axially relative to the first smoke outlet 51, one of the first holes on the second smoke inlet 61 can rotate to coincide with the second hole located at the front, and the other first hole can coincide with the second hole located at the rear. Subsequently, a connector 8 can be provided at the positions of the overlapping second and first holes at the front to form a limiting structure that can effectively limit the movement of the smoke outlet seat 5 and the smoke exhaust pipe connecting seat 6.

[0193] In one embodiment, the first limiting structure is located at the lower part of the smoke outlet assembly, and the second limiting structure is located at the upper part of the smoke outlet assembly. When the first smoke outlet part 51 and the second smoke inlet part 61 are connected in place through the first docking part and the second docking part, the first limiting structure is located at the lower part of the smoke outlet assembly, and the first limiting structure is vertically oriented or the angle between the orientation of the first limiting structure and the vertical plane is not greater than 45°; the second limiting structure is located at the upper part of the smoke outlet assembly, and the second limiting structure is vertically oriented or the angle between the orientation of the second limiting structure and the vertical plane is not greater than 45°.

[0194] In this embodiment, the limiting structure may include a first limiting structure located on the upper part of the smoke outlet assembly and a second limiting structure located on the lower part of the smoke outlet assembly. Taking the fitting of the connector 8 and the hole as an example, the limiting structure may have a second hole on the first smoke outlet portion 51, which may be distributed on the upper and lower parts of the first smoke outlet portion 51. The second hole located on the upper part is vertically oriented or the angle between the orientation of the upper second hole and the vertical plane is not greater than 45°; the second hole located on the lower part is vertically oriented or the angle between the orientation of the lower second hole and the vertical plane is not greater than 45°. The second smoke inlet portion 61 may have a first hole, which may be distributed circumferentially on different sides of the second smoke inlet portion 61.

[0195] After the first smoke outlet 51 and the second smoke inlet 61 are connected in place via the first docking part and the second docking part, specifically, after the second smoke inlet 61 moves a predetermined distance axially relative to the first smoke outlet 51, one of the first holes on the second smoke inlet 61 can rotate to coincide with the second hole located at the lower part, and the other first hole can coincide with the second hole located at the upper part. Subsequently, a connecting member 8 can be provided at the positions of the mutually coinciding second and first holes located at the lower part to form a limiting structure that can effectively limit the movement of the smoke outlet seat 5 and the smoke exhaust pipe connecting seat 6.

[0196] It should be noted that the actual number of sets of limiting structures forming an effective limit on the smoke outlet seat 5 and the smoke exhaust pipe connecting seat 6 can be one set. After the smoke outlet seat 5 and the smoke exhaust pipe connecting seat 6 are connected in place, there may be multiple sets of overlapping first and second holes. At least one set of overlapping first and second holes is located in a position convenient for the operator to operate, such as at the bottom or front. During actual operation, the operator can choose to install the connecting piece 8 in this convenient position within the set of overlapping first and second holes.

[0197] In this embodiment, the exhaust pipe 9 may include an inner pipe and an outer pipe 92. The cross-section of the exhaust pipe 9 may be circular, rectangular, or may have other regular or irregular structures; this application does not impose specific limitations here. In the embodiments and accompanying drawings of this application, the circular cross-section of the exhaust pipe 9 is mainly used as an example for illustration.

[0198] The inner tube 91 and the outer tube 92 can be spaced apart to form an annular cavity. This arrangement allows the exhaust pipe 9 to have better noise reduction performance compared to a single-layer tube.

[0199] The inner tube 91 may or may not have openings on its sidewall. In one embodiment, when the inner tube 91 has openings on its sidewall, sound-absorbing cotton can be placed in the annular cavity between the inner tube 91 and the outer tube 92. When the noise generated after the fan starts propagates into the exhaust pipe 9, it can be reduced by the sound-absorbing cotton through the openings, thereby reducing the noise in the downstream section of the exhaust vent and improving the noise reduction performance of the range hood.

[0200] In another embodiment, the inner tube 91 has no holes on its sidewall, and sound insulation cotton 93 is provided between the inner tube 91 and the outer tube 92.

[0201] When no openings are provided on the side wall of the inner tube 91, the inner wall surface of the inner tube 91 is a closed columnar surface, forming a flow channel for flue gas. Sound-insulating cotton 93 can be installed in the annular cavity between the inner tube 91 and the outer tube 92. When the noise generated after the fan starts propagates into the flow channel of the exhaust pipe 9, it can be reduced by the sound-insulating cotton 93, thereby reducing the noise downstream of the exhaust outlet during fan operation and improving the noise reduction performance of the range hood.

[0202] The thickness of the sound-insulating cotton 93 is between 10 mm and 15 mm. The specific thickness of the sound-insulating cotton 93 can be determined comprehensively based on the distance between the inner tube 91 and the outer tube 92, as well as the fixing method of the sound-insulating cotton 93. For example, if the sound-insulating cotton 93 is bonded to the inner tube 91 and / or the outer tube 92, then the overall thickness of the sound-insulating cotton 93 depends on the distance between the inner tube 91 and the outer tube 92. Furthermore, when the sound-insulating cotton 93 is installed between the inner tube 91 and the outer tube 92, it can be in a compressed state. In this case, the initial thickness of the sound-insulating cotton 93 can be slightly greater than the distance between the inner tube 91 and the outer tube 92.

[0203] like Figure 8 As shown, in one embodiment, the second smoke inlet 61 is generally hollow and annular, and a plurality of anti-slip parts are provided on the outer side wall of the second smoke inlet 61 along the circumferential direction.

[0204] In this embodiment, the second smoke inlet 61 can be a cylindrical shape with openings at both ends. Multiple anti-slip parts can be provided on the outer wall of the second smoke inlet 61 along the circumference. When the operator rotates and connects the second smoke inlet 61 with the first smoke outlet 51, the friction can be increased by contacting the anti-slip parts, thereby facilitating the quick connection and fixation of the second smoke inlet 61 with the first smoke outlet 51.

[0205] The anti-slip part may include any one or a combination of the following: a rib 613 or a protrusion on the outer side wall of the second smoke inlet 61, or a groove or a recess on the outer side wall of the second smoke inlet 61.

[0206] The anti-slip part can take the form of a rib 613, a protrusion, a groove, a recess, etc. Alternatively, the anti-slip part can also be a grid formed on the outer side wall of the second smoke inlet 61. Of course, the anti-slip part can also take other forms that can improve the friction coefficient of the outer side wall of the second smoke inlet 61. It is not limited to the above description. Those skilled in the art may make other changes under the guidance of the technical essence of this application. However, as long as the function and effect achieved are the same as or similar to this application, they should be covered within the protection scope of this application.

[0207] In one specific embodiment, the rib 613 and / or the groove extends along the axial direction of the second smoke inlet 61; or, the rib 613 and / or the groove are inclined and form a predetermined angle with the axial direction of the second smoke inlet 61.

[0208] In this embodiment, taking the anti-slip part as a rib 613 as an example, the rib 613 can extend along the axial direction of the second smoke inlet 61 as a whole. Alternatively, the rib can be inclined and form a predetermined angle with the axial direction of the second smoke inlet 61. When the operator holds the anti-slip part and connects the smoke exhaust pipe connector 6 to the smoke outlet seat 5, the force applied by the operator can be decomposed into two components. One component is perpendicular to the axial direction of the second smoke inlet 61, causing the smoke exhaust pipe connector 6 to rotate; the other component is parallel to the axial direction of the second smoke inlet 61, causing the smoke exhaust pipe connector 6 to move closer to the smoke outlet seat 5, thereby efficiently connecting the smoke exhaust pipe connector 6 to the smoke outlet seat 5 as a whole.

[0209] Furthermore, when the anti-slip part is a groove, its setting method and the corresponding effect are similar to those of the above-mentioned rib 613, and will not be described again here.

[0210] like Figure 12As shown in the figure, this application also provides a range hood, which includes the above-mentioned smoke outlet assembly. By setting the smoke outlet assembly, the range hood can achieve the technical effect achieved by the smoke outlet assembly embodiment. For details, please refer to the specific description of the above embodiment, which will not be repeated here.

[0211] In one embodiment, the range hood further includes a fan box 1, a smoke inlet pipe assembly 3, and a smoke collection chamber 4. The outlet of the fan box 1 is located on the side plate of the fan box 1, and the smoke outlet assembly is located at the outlet of the fan box 1. The fan box 1, the smoke inlet pipe assembly 3, and the smoke collection chamber 4 are connected sequentially from top to bottom.

[0212] In this embodiment, the range hood may include a fan housing 1, a smoke inlet pipe assembly 3, and a smoke collection chamber 4. The smoke collection chamber 4, the smoke inlet pipe assembly 3, and the fan housing 1 can be arranged sequentially along the direction of smoke flow. Specifically, the smoke collection chamber 4, the smoke inlet pipe assembly 3, and the fan housing 1 can be arranged vertically from bottom to top. The smoke collection chamber 4 is positioned relatively close to the user's cooking area to collect the smoke generated during cooking. The fan housing 1 contains a fan for suction of the smoke, and is positioned relatively away from the user's cooking area. The outlet of the fan housing 1 is located on the side plate of the fan housing 1, above the ceiling 2, and the smoke outlet assembly is located at the outlet of the fan housing 1. When the range hood is started, the smoke generated during cooking is discharged outwards through the smoke collection chamber 4, the smoke inlet pipe assembly 3, the fan housing 1, and the smoke outlet assembly (exhaust pipe 9).

[0213] It should be noted that in the description of this application, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this application, unless otherwise stated, "multiple" means two or more.

[0214] The various embodiments described in this specification are presented in a progressive manner. The same or similar parts between the embodiments can be referred to each other. Each embodiment focuses on the differences from other embodiments.

[0215] The above are merely a few embodiments of this utility model. Although the embodiments disclosed in this utility model are as described above, the content is only for the purpose of facilitating understanding of this utility model and is not intended to limit this utility model. Any person skilled in the art to which this utility model pertains may make any modifications and changes in the form and details of the embodiments without departing from the spirit and scope disclosed in this utility model. However, the patent protection scope of this utility model shall still be determined by the scope defined in the appended claims.

Claims

1. A smoke outlet assembly, characterized in that, The smoke outlet assembly is used to be horizontally placed above the ceiling. The smoke outlet assembly includes a smoke outlet seat and a smoke exhaust pipe connector. The smoke outlet seat has a first smoke inlet and a first smoke outlet. The first smoke outlet has a first mating part. The smoke exhaust pipe connector has a second smoke inlet and a second smoke outlet. The second smoke outlet is used to connect to the smoke exhaust pipe. The second smoke inlet has a second mating part. The first smoke outlet and the second smoke inlet are connected by threads or quick-connects through the first mating part and the second mating part.

2. The smoke outlet assembly according to claim 1, characterized in that, The first smoke outlet and the second smoke inlet are connected by threads through the first mating part and the second mating part, one of the first mating part and the second mating part including an external thread and the other including an internal thread.

3. The smoke outlet assembly according to claim 2, characterized in that, The first smoke outlet and the second smoke inlet are sealed together; the smoke outlet assembly further includes a sealing structure, which is disposed at the first smoke outlet and / or the second smoke inlet, or the external thread and the internal thread are tapered sealing threads.

4. The smoke outlet assembly according to claim 3, characterized in that, The first mating part has an external thread, the second mating part has an internal thread, the sealing structure includes a sealing ring, the second smoke inlet part is provided with a limiting part, in the direction of smoke flow, the limiting part is located downstream of the internal thread, and the sealing ring is located between the end of the first smoke outlet part and the limiting part; or, the first mating part has an internal thread, the second mating part has an external thread, the sealing structure includes a sealing ring, the first smoke outlet part is provided with a limiting part, in the direction of smoke flow, the limiting part is located upstream of the internal thread, and the sealing ring is located between the end of the second smoke inlet part and the limiting part.

5. The smoke outlet assembly according to claim 2, characterized in that, The second mating part includes a first thread and a second thread that are offset along the extension direction of the exhaust pipe connector. The starting positions of the first thread and the second thread are located on opposite sides of the second smoke inlet and / or the distances from the starting positions of the first thread and the second thread to the end of the second smoke inlet are the same or substantially the same.

6. The smoke outlet assembly according to claim 1, characterized in that, The first smoke outlet and the second smoke inlet are quickly connected by the first docking part and the second docking part. One of the first docking part and the second docking part is a deformable snap-fit ​​part, and the other is a snap-fit ​​part adapted to the snap-fit ​​part.

7. The smoke outlet assembly according to any one of claims 1 to 6, characterized in that, The first smoke outlet and / or the second smoke inlet further include a limiting structure, which is used to limit the relative position between the first smoke outlet and the second smoke inlet.

8. The smoke outlet assembly according to claim 7, characterized in that, One of the first smoke outlet and the second smoke inlet is provided with a first hole, and the other of the first smoke outlet and the second smoke inlet is provided with a second hole. The limiting structure includes the first hole and the second hole. When the first smoke outlet and the second smoke inlet are connected in place through the first docking part and the second docking part, the first hole can coincide with the second hole. The limiting structure also includes a connector for connecting through the first hole and the second hole to limit the relative position between the first smoke outlet and the second smoke inlet.

9. The smoke outlet assembly according to claim 8, characterized in that, The first hole is an adjustment hole, and the second hole is a mounting hole. The area of ​​the adjustment hole is greater than the area of ​​the mounting hole, or the circumferential length of the adjustment hole is greater than the circumferential length of the mounting hole.

10. The smoke outlet assembly according to claim 9, characterized in that, The mounting holes include threaded holes and / or blind holes.

11. The smoke outlet assembly according to claim 8, characterized in that, The second smoke inlet is sleeved outside the first smoke outlet, the first hole is provided on the second smoke inlet, and the second hole is provided on the first smoke outlet; or, the second smoke inlet passes through the inside of the first smoke outlet, the first hole is provided on the first smoke outlet, and the second hole is provided on the second smoke inlet.

12. The smoke outlet assembly according to claim 7, characterized in that, After the first smoke outlet and the second smoke inlet are connected in place via the first docking part and the second docking part, the limiting structure is located at the front and / or lower part of the smoke outlet assembly.

13. The smoke outlet assembly according to claim 12, characterized in that, After the first smoke outlet and the second smoke inlet are connected in place through the first docking part and the second docking part, the limiting structure is located at the front of the smoke outlet assembly. The limiting structure is horizontal or the angle between the orientation of the limiting structure and the horizontal plane is not greater than 45°. Alternatively, after the first smoke outlet and the second smoke inlet are connected in place through the first docking part and the second docking part, the limiting structure is located at the lower part of the smoke outlet assembly. The limiting structure is vertical or the angle between the orientation of the limiting structure and the vertical plane is not greater than 45°.

14. The smoke outlet assembly according to claim 7, characterized in that, The limiting structure includes a first limiting structure and a second limiting structure. The first limiting structure is located at the front of the smoke outlet assembly, and the second limiting structure is located at the rear of the smoke outlet assembly. Alternatively, the first limiting structure is located at the lower part of the smoke outlet assembly, and the second limiting structure is located at the upper part of the smoke outlet assembly.

15. The smoke outlet assembly according to claim 14, characterized in that, The first limiting structure and the second limiting structure are symmetrically arranged.

16. The smoke outlet assembly according to claim 14, characterized in that, The first limiting structure is located at the front of the smoke outlet assembly, and the second limiting structure is located at the rear of the smoke outlet assembly. When the first smoke outlet and the second smoke inlet are connected in place via the first and second mating parts, the first limiting structure is located at the front of the smoke outlet assembly, and the first limiting structure is horizontal or the angle between the orientation of the first limiting structure and the horizontal plane is no greater than 45°; the second limiting structure is located at the rear of the smoke outlet assembly, and the second limiting structure is horizontal or the angle between the orientation of the second limiting structure and the horizontal plane is no greater than 45°. The first limiting structure is located at the lower part of the smoke outlet assembly, and the second limiting structure is located at the upper part of the smoke outlet assembly. When the first smoke outlet part and the second smoke inlet part are connected in place through the first docking part and the second docking part, the first limiting structure is located at the lower part of the smoke outlet assembly, and the first limiting structure is vertically oriented or the angle between the orientation of the first limiting structure and the vertical plane is not greater than 45°; the second limiting structure is located at the upper part of the smoke outlet assembly, and the second limiting structure is vertically oriented or the angle between the orientation of the second limiting structure and the vertical plane is not greater than 45°.

17. The smoke outlet assembly according to claim 7, characterized in that, The limiting structure includes a first hole and a second hole. One of the first smoke outlet and the second smoke inlet is provided with the first hole, and the other of the first smoke outlet and the second smoke inlet is provided with the second hole; or, the first smoke outlet and the second smoke inlet are threadedly connected by the first mating part and the second mating part, and the limiting structure includes a threaded protrusion in the first mating part and a threaded recess in the second mating part, or a threaded recess in the first mating part and a threaded protrusion in the second mating part.

18. The smoke outlet assembly according to claim 1, characterized in that, The exhaust pipe includes an inner pipe and an outer pipe disposed around the inner pipe; the inner pipe may have an opening on its side wall or may not have an opening on its side wall.

19. The smoke outlet assembly according to claim 18, characterized in that, The inner tube has no holes on its sidewall, and sound insulation cotton is provided between the inner tube and the outer tube.

20. The smoke outlet assembly according to claim 1, characterized in that, The second smoke inlet is a hollow ring, and multiple anti-slip parts are provided on the outer wall of the second smoke inlet along the circumference.

21. The smoke outlet assembly according to claim 20, characterized in that, The anti-slip part includes any one or a combination of the following: ribs or protrusions protruding from the outer wall of the second smoke inlet, or grooves or recesses recessed from the outer wall of the second smoke inlet.

22. The smoke outlet assembly according to claim 21, characterized in that, The ribs and / or the grooves extend along the axial direction of the second smoke inlet; or, the ribs and / or the grooves are inclined and form a predetermined angle with the axial direction of the second smoke inlet.

23. A smoke outlet assembly, characterized in that, The smoke outlet assembly is used to be horizontally placed above the suspended ceiling. The smoke outlet assembly includes a smoke outlet seat and a smoke exhaust pipe connector. The smoke outlet seat has a first smoke inlet and a first smoke outlet. The first smoke outlet has a first connecting portion. The smoke exhaust pipe connector has a second smoke inlet and a second smoke outlet. The second smoke outlet is used to connect to the smoke exhaust pipe. The second smoke inlet has a second connecting portion. The first smoke outlet and the second smoke inlet are connected through the first connecting portion and the second connecting portion. The first smoke outlet and / or the second smoke inlet further include a limiting structure. The limiting structure is used to limit the relative position between the first smoke outlet and the second smoke inlet. The limiting structure includes a first limiting structure and a second limiting structure. The first limiting structure is located at the front of the smoke outlet assembly, and the second limiting structure is located at the rear of the smoke outlet assembly. And / or, the first limiting structure is located at the lower part of the smoke outlet assembly, and the second limiting structure is located at the upper part of the smoke outlet assembly.

24. The smoke outlet assembly according to claim 23, characterized in that, The first limiting structure and the second limiting structure are symmetrically arranged.

25. The smoke outlet assembly according to claim 23, characterized in that, The limiting structure includes a first hole and a second hole. One of the first smoke outlet and the second smoke inlet is provided with the first hole, and the other of the first smoke outlet and the second smoke inlet is provided with the second hole.

26. The smoke outlet assembly according to claim 23, characterized in that, The first limiting structure is located at the front of the smoke outlet assembly, and the second limiting structure is located at the rear of the smoke outlet assembly. When the first smoke outlet and the second smoke inlet are connected in place via the first and second mating parts, the first limiting structure is located at the front of the smoke outlet assembly, and the first limiting structure is horizontal or the angle between the orientation of the limiting structure and the horizontal plane is no greater than 45°; the second limiting structure is located at the rear of the smoke outlet assembly, and the second limiting structure is horizontal or the angle between the orientation of the second limiting structure and the horizontal plane is no greater than 45°. The first limiting structure is located at the lower part of the smoke outlet assembly, and the second limiting structure is located at the upper part of the smoke outlet assembly. When the first smoke outlet part and the second smoke inlet part are connected in place through the first docking part and the second docking part, the first limiting structure is located at the lower part of the smoke outlet assembly, and the first limiting structure is vertically oriented or the angle between the orientation of the limiting structure and the vertical plane is not greater than 45°; the second limiting structure is located at the upper part of the smoke outlet assembly, and the second limiting structure is vertically oriented or the angle between the orientation of the second limiting structure and the vertical plane is not greater than 45°.

27. The smoke outlet assembly according to claim 26, characterized in that, The exhaust pipe includes an inner pipe and an outer pipe disposed around the inner pipe; the inner pipe may have an opening on its side wall or may not have an opening on its side wall.

28. The smoke outlet assembly according to claim 27, characterized in that, The inner tube has no holes on its sidewall, and sound insulation cotton is provided between the inner tube and the outer tube.

29. The smoke outlet assembly according to claim 23, characterized in that, The first smoke outlet and the second smoke inlet are connected by threads through the first mating part and the second mating part, one of the first mating part and the second mating part including an external thread and the other including an internal thread.

30. The smoke outlet assembly according to claim 23, characterized in that, The second smoke inlet is a hollow ring, and multiple anti-slip parts are provided on the outer wall of the second smoke inlet along the circumference.

31. The smoke outlet assembly according to claim 30, characterized in that, The anti-slip part includes any one or a combination of the following: ribs or protrusions protruding from the outer wall of the second smoke inlet, or grooves or recesses recessed from the outer wall of the second smoke inlet.

32. The smoke outlet assembly according to claim 31, characterized in that, The ribs and / or the grooves extend along the axial direction of the second smoke inlet; or, the ribs and / or the grooves are inclined and form a predetermined angle with the axial direction of the second smoke inlet.

33. A range hood, characterized in that, The range hood includes: a smoke outlet assembly as described in any one of claims 1 to 32.

34. The range hood according to claim 33, characterized in that, The range hood also includes a fan box, a smoke inlet pipe assembly, and a smoke collection chamber. The outlet of the fan box is located on the side plate of the fan box, and the smoke outlet assembly is located at the outlet of the fan box. The fan box, the smoke inlet pipe assembly, and the smoke collection chamber are connected in sequence from top to bottom.

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