CN218883087U - Check valve and range hood - Google Patents

Abstract

The utility model relates to a kitchen appliance technical field discloses a check valve and range hood. The check valve comprises a valve body, a driving assembly and a plurality of valve plate assemblies, wherein an air inlet and an air outlet are formed in the valve body; the valve block assemblies are arranged in the valve body along the circumferential direction and are positioned between the air inlet and the air outlet, each valve block assembly comprises a sub valve block and a connecting rod, one end of each connecting rod is fixed on the valve body, the other end of each connecting rod is rotatably connected with the sub valve block, and a driving bulge is arranged on each sub valve block; the driving component comprises a driving part and a driving disc, a central hole communicated with the air inlet and a plurality of driving grooves in one-to-one sliding fit with the valve plates are formed in the driving disc, and the driving part is used for driving the driving disc to rotate so that the valve plates of the valve plate components are conducted together or the air inlet and the air outlet are isolated. The utility model discloses adaptable different flow demands have reduced fluidic flow resistance, have weakened fluid noise, have reduced range hood's motor load.

Description

Check valve and range hood

Technical Field

The utility model relates to a kitchen appliance technical field especially relates to a check valve and range hood.

Background

Check valves are generally arranged between an air outlet pipeline of the range hood and a common flue or between the range hood and the air outlet pipeline, the check valves are generally composed of two semicircular valve plates, valve plate connecting rods and valve plate bases, when media in pipelines flow from the range hood to the common flue, the two semicircular valve plates are opened towards the middle of the pipelines along the direction of fluid through the valve plate connecting rods, and the fluid in the air outlet pipe or the range hood is guaranteed to enter the common flue. When the cigarette machine stops operating, the check valve is in a closed state, and when fluid passes through the public flue, the fluid in the public flue can be prevented from flowing backwards into the air outlet pipeline and the cigarette machine.

However, when the cigarette machine moves, the check valve is in the open mode, and the valve block connecting rod forms the cutting to the fluid in the pipeline, increases fluidic flow resistance, can lead to motor load to increase, influences motor life, increases motor noise, can form fluid noise in the check valve position simultaneously, influences user's use and experiences.

SUMMERY OF THE UTILITY MODEL

Based on the above problem, an object of the utility model is to provide a check valve and range hood can reduce fluidic flow resistance, weakens the fluid noise, reduces range hood's motor load.

In order to realize the purpose, the following technical scheme is provided:

in a first aspect, the present invention provides a check valve, including:

the valve body is provided with an air inlet and an air outlet;

the valve plate assemblies are arranged in the valve body along the circumferential direction and are positioned between the air inlet and the air outlet, each valve plate assembly comprises a sub valve plate and a connecting rod, one end of each connecting rod is fixed on the valve body, the other end of each connecting rod is rotatably connected with the sub valve plate, and a driving bulge is arranged on each sub valve plate;

the driving component comprises a driving piece and a driving disc, a central hole communicated with the air inlet and a plurality of driving grooves in one-to-one sliding fit with the driving protrusions are formed in the driving disc, and the driving piece is used for driving the driving disc to rotate so that the sub valve plates of the valve plate components are communicated or isolated with the air inlet and the air outlet.

As the utility model provides an alternative of check valve, drive assembly still includes the driven plate, be provided with on the driven plate a plurality of with the protruding one-to-one sliding fit's of drive direction recess.

As the utility model provides an alternative of check valve, be provided with on the sub-valve piece and dodge the groove, the tip of connecting rod stretches into dodge in the groove.

As the utility model provides an alternative of check valve, be provided with slider and spout, one on the sub-valve piece the slider is with adjacent another the spout sliding fit of sub-valve piece.

As the utility model provides an alternative of check valve, the sub-valve block is isosceles triangle, the slider set up in on one waist limit of isosceles triangle, the spout set up in on another waist limit of isosceles triangle.

As the utility model provides an alternative of check valve, be provided with on the sub-valve piece and dredge the oil reservoir.

As the utility model provides an alternative of check valve, be provided with the guide way on the valve body, be provided with on the driving-disc with guide way sliding fit's guide bar, the driving piece is used for driving the guide bar is in slide in the guide way.

As the utility model provides an alternative of check valve, drive assembly still includes first pole and the second pole of rotating the connection, the output shaft of driving piece with first pole is connected, the second pole with the guide bar rotates to be connected.

As the utility model provides an alternative of check valve, the valve body is including dismantling the first casing and the second casing of connection, the air intake set up in on the first casing, the air outlet set up in on the second casing.

The second aspect, the utility model also provides a range hood, including foretell check valve.

The beneficial effects of the utility model are that:

the utility model provides a check valve and range hood, because a plurality of valve block subassembly is located between the air intake and the air outlet of valve body, the one end of connecting rod is fixed in on the valve body, the other end and the sub-valve block of connecting rod rotate to be connected, it rotates to drive the driving-disc through the driving piece, under the sliding fit of drive recess and sub-valve block and the restraint of connecting rod, make the sub-valve block of a plurality of valve block subassembly switch on or completely cut off air intake and air outlet jointly, realize opening and closing of check valve, the opening degree of check valve is adjustable, adaptable different flow demand, can avoid the fluid among the pipeline of discharging fume to flow backward when the check valve is closed, can avoid cutting the fluid in the pipeline of discharging fume when the check valve is opened, the fluidic flow resistance has been reduced, the fluid noise has been weakened, user's use experience has been promoted, range hood's motor load has been reduced, be favorable to promoting range hood's fan performance, range hood's life has been prolonged.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a check valve in a closed state according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the check valve provided in the embodiment of the present invention in an open state;

FIG. 3 is an exploded view of a check valve according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a neutron valve sheet in the check valve according to the embodiment of the present invention;

FIG. 5 is a schematic structural view of a valve body and a valve plate assembly in a check valve according to an embodiment of the present invention;

fig. 6 is a schematic structural view of the check valve according to the embodiment of the present invention when fully closed;

FIG. 7 is a schematic view of a half-open check valve according to an embodiment of the present invention;

fig. 8 is a schematic structural view of the check valve according to the embodiment of the present invention when the check valve is fully opened.

In the figure:

1. a valve body; 2. a valve plate assembly; 3. a drive assembly;

11. a first housing; 12. a second housing; 13. an air inlet; 14. an air outlet; 15. a guide groove;

16. a fixing hole;

21. a sub valve plate; 22. a connecting rod; 23. a fastener;

211. a drive boss; 212. an avoidance groove; 213. a slider; 214. a chute; 215. chamfering;

31. a drive member; 32. a drive disc; 33. a driven plate; 34. a first lever; 35. a second lever;

321. a driving groove; 322. a guide bar; 323. a first through hole;

331. a guide groove; 332. a second via.

Detailed Description

In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 8, the present embodiment provides a check valve, which includes a valve body 1, a driving assembly 3 and a plurality of valve plate assemblies 2, wherein the valve body 1 is provided with an air inlet 13 and an air outlet 14. The valve plate assemblies 2 are circumferentially arranged in the valve body 1 and located between the air inlet 13 and the air outlet 14, each valve plate assembly 2 comprises a sub valve plate 21 and a connecting rod 22, one end of each connecting rod 22 is fixed on the valve body 1, the other end of each connecting rod 22 is rotatably connected with the corresponding sub valve plate 21, and a driving protrusion 211 is arranged on each sub valve plate 21. The driving assembly 3 includes a driving member 31 and a driving plate 32, the driving plate 32 is provided with a central hole communicated with the air inlet 13 and a plurality of driving grooves 321 in one-to-one sliding fit with the driving protrusions 211, and the driving member 31 is used for driving the driving plate 32 to rotate, so that the sub valve sheets 21 of the plurality of valve sheet assemblies 2 are conducted together or isolated from the air inlet 13 and the air outlet 14.

Drive driving-disc 32 through driving piece 31 and rotate, under the sliding fit of drive recess 321 and sub-valve piece 21 and under the restraint of connecting rod 22, make the sub-valve piece 21 of a plurality of valve piece subassembly 2 switch on or isolated air intake 13 and air outlet 14 jointly, realize opening and closing of check valve, the degree of opening of check valve is adjustable, adaptable different flow demand, can avoid the fluid in the pipeline of discharging fume to flow backward when the check valve is closed, can avoid cutting the fluid in the pipeline of discharging fume when the check valve is opened, the flow resistance of fluid has been reduced, the fluid noise has been weakened, user's use experience has been promoted, the motor load of range hood has been reduced, be favorable to promoting range hood's fan performance, the life of range hood has been prolonged.

In order to ensure that the sub-valve plate 21 rotates according to the predetermined track, the driving assembly 3 further includes a driven plate 33, and the driven plate 33 is provided with a plurality of guiding grooves 331 which are slidably engaged with the driving protrusions 211 one by one. The number of the driving grooves 321 is the same as that of the guiding grooves 331, the driving grooves 321 and the guiding grooves 331 have the same shape and can be both linear, and two driving protrusions 211 on the sub valve sheet 21 can be arranged at intervals, so that the stable movement between the sub valve sheet 21 and the driving disc 32 is ensured. In this embodiment, nine sub valve sheets 21 may be provided, and nine driving grooves 321 and nine guide grooves 331 are correspondingly provided. In other embodiments, ten to fifteen sub valve plates 21 can be provided. The larger the number of the sub valve sheets 21, the smaller the installation space required. A first through hole 323 communicating with the air inlet 13 is provided at the center of the driving disc 32, and a second through hole 332 communicating with the air outlet 14 is provided at the center of the driven disc 33.

In order to reduce the axial space occupied by the valve plate assembly 2, an avoiding groove 212 is optionally provided on the sub-valve plate 21, and the end of the connecting rod 22 extends into the avoiding groove 212. The valve plate assembly 2 further comprises a fastener 23, the end of the connecting rod 22 is fixedly connected with the valve body 1 through the fastener 23, the fastener 23 may be a rivet, and the valve body 1 is provided with a corresponding fixing hole 16.

In order to ensure that the frictional resistance between two adjacent sub-valve plates 21 is small, optionally, the sub-valve plates 21 are provided with a sliding block 213 and a sliding groove 214, and the sliding block 213 of one sub-valve plate 21 is in sliding fit with the sliding groove 214 of the other adjacent sub-valve plate 21.

For convenience of processing, optionally, the sub valve plate 21 is an isosceles triangle, the sliding block 213 is disposed on one waist side of the isosceles triangle, and the sliding groove 214 is disposed on the other waist side of the isosceles triangle. The sub valve plate 21 is further provided with a chamfer 215, the chamfer 215 is located at one end of the bottom edge of the isosceles triangle, and the other end of the bottom edge of the isosceles triangle is rotatably connected with the connecting rod 22.

Optionally, an oil-repellent layer is disposed on the sub-valve plate 21. The oil-repellent layer is formed by coating an oil-repellent material, and the oil-repellent material can be a polytetrafluoroethylene material. When oil drops on the surface of the sub valve plate 21, the oleophobic material on the surface of the sub valve plate 21 can reduce the motion resistance of the sub valve plate 21.

In order to facilitate the operation of the driving disc 32, optionally, a guiding slot 15 is provided on the valve body 1, a guiding rod 322 slidably engaged with the guiding slot 15 is provided on the driving disc 32, and the driving member 31 is used for driving the guiding rod 322 to slide in the guiding slot 15. The guide slot 15 is an arc-shaped slot, and the corresponding central angle of the arc-shaped slot depends on the movement range of the sub-valve plate 21.

In order to reduce the occupied space of the driving assembly 3, optionally, the driving assembly 3 further comprises a first rod 34 and a second rod 35 which are rotatably connected, the output shaft of the driving member 31 is connected with the first rod 34, and the second rod 35 is rotatably connected with the guide rod 322. The drive member 31 may be a motor, the output shaft of which is connected to the first rod 34. The output shaft of the motor may be connected to the first lever 34 by a key to ensure torque transfer. The output shaft of the motor may also be a square shaft or a hexagonal shaft, and the end of the first rod 34 is provided with a square hole or a hexagonal hole that is matched with the output shaft.

In order to facilitate the disassembly and washing of the valve plate assembly 2, optionally, the valve body 1 includes a first housing 11 and a second housing 12 detachably connected, the air inlet 13 is disposed on the first housing 11, and the air outlet 14 is disposed on the second housing 12. After long-term use, the valve plate assembly 2 is easy to accumulate oil stains, the first shell 11 and the second shell 12 can be periodically detached, the valve plate assembly 2 is taken out for cleaning, and smooth rotation of the sub-valve plate 21 is guaranteed. The first housing 11 and the second housing 12 may be fixedly connected by screws or may be fixedly connected by snaps.

The embodiment further provides a range hood, including the check valve described above, because a plurality of valve plate assemblies 2 are located between the air inlet 13 and the air outlet 14 of the valve body 1, one end of the connecting rod 22 is fixed on the valve body 1, the other end of the connecting rod 22 is rotationally connected with the sub-valve plate 21, the driving disk 32 is driven to rotate by the driving piece 31, under the sliding fit of the driving groove 321 and the sub-valve plate 21 and the constraint of the connecting rod 22, the sub-valve plates 21 of the plurality of valve plate assemblies 2 are made to be jointly conducted or isolated from the air inlet 13 and the air outlet 14, the opening and closing of the check valve are realized, the opening degree of the check valve is adjustable, different flow requirements can be met, backflow of fluid in the smoke exhaust pipeline can be avoided when the check valve is closed, cutting of fluid in the smoke exhaust pipeline can be avoided when the check valve is opened, the flow resistance of the fluid is reduced, the fluid noise is weakened, the use experience of a user is improved, the motor load of the range hood is reduced, the fan performance is favorable for improving the range hood, and the service life of the range hood is prolonged.

It should be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims (10)

1. A check valve, comprising:

the valve comprises a valve body (1), wherein an air inlet (13) and an air outlet (14) are formed in the valve body (1);

the valve plate assemblies (2) are arranged in the valve body (1) along the circumferential direction and are positioned between the air inlet (13) and the air outlet (14), each valve plate assembly (2) comprises a sub valve plate (21) and a connecting rod (22), one end of each connecting rod (22) is fixed on the valve body (1), the other end of each connecting rod (22) is rotatably connected with the corresponding sub valve plate (21), and a driving protrusion (211) is arranged on each sub valve plate (21);

drive assembly (3), including driving piece (31) and driving-disc (32), be provided with on driving-disc (32) with the centre bore and a plurality of air intake (13) intercommunication with drive protruding (211) one by one sliding fit's drive recess (321), driving piece (31) are used for driving-disc (32) rotate, so that a plurality of valve block subassembly (2) sub-valve block (21) switch on jointly or completely cut off air intake (13) with air outlet (14).

2. The non-return valve according to claim 1, characterized in that the driving assembly (3) further comprises a driven disc (33), the driven disc (33) being provided with a plurality of guide grooves (331) which are in one-to-one sliding fit with the driving protrusions (211).

3. The non-return valve according to claim 1, characterized in that an avoiding groove (212) is provided on the sub valve plate (21), and the end of the connecting rod (22) protrudes into the avoiding groove (212).

4. The check valve according to claim 1, characterized in that the sub valve plate (21) is provided with a slide block (213) and a slide groove (214), and the slide block (213) of one sub valve plate (21) is in sliding fit with the slide groove (214) of another adjacent sub valve plate (21).

5. The non-return valve according to claim 4, characterized in that the sub-vane (21) is an isosceles triangle, the slide (213) is arranged on one of the legs of the isosceles triangle, and the slide groove (214) is arranged on the other leg of the isosceles triangle.

6. The non-return valve according to any of claims 1-5, characterized in that the sub-valve plate (21) is provided with an oil-repelling layer.

7. The non-return valve according to any one of claims 1 to 5, characterized in that the valve body (1) is provided with a guide slot (15), the driving disc (32) is provided with a guide rod (322) slidably engaged with the guide slot (15), and the driving element (31) is used for driving the guide rod (322) to slide in the guide slot (15).

8. The non-return valve according to claim 7, characterized in that the drive assembly (3) further comprises a first rod (34) and a second rod (35) which are rotationally connected, the output shaft of the drive member (31) being connected to the first rod (34), the second rod (35) being rotationally connected to the guide rod (322).

9. Non-return valve according to one of claims 1 to 5, characterized in that the valve body (1) comprises a first housing (11) and a second housing (12) which are detachably connected, the air inlet (13) being arranged on the first housing (11) and the air outlet (14) being arranged on the second housing (12).

10. A range hood comprising a check valve as claimed in any one of claims 1 to 9.

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