CN216047905U - Check valve, air inlet device and fan host - Google Patents
Check valve, air inlet device and fan host Download PDFInfo
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- CN216047905U CN216047905U CN202121798999.0U CN202121798999U CN216047905U CN 216047905 U CN216047905 U CN 216047905U CN 202121798999 U CN202121798999 U CN 202121798999U CN 216047905 U CN216047905 U CN 216047905U
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Abstract
The utility model provides a check valve, an air inlet device and a fan host, and relates to the technical field of kitchen appliances, wherein an air inlet and an air outlet are respectively formed at two ends of the check valve; the center of the air inlet is a first center, and the center of the air outlet is a second center; the direction vertical to the plane of the air inlet is a first direction; the first center projects on the plane where the air inlet is located along a first direction to form a first projection, and the second center projects on the plane where the air inlet is located along the first direction to form a second projection; the first projection and the second projection are arranged at intervals. The three-stage motion trail can be further away from the two-stage motion trail, so that the steering angle beta is increased. The steering angle beta is increased, the flowing track of the airflow can be smoother, the airflow loss is reduced, the airflow flowing efficiency is increased, and therefore the airflow efficiency of the range hood is improved, and the noise is reduced.
Description
Technical Field
The utility model relates to the technical field of kitchen appliances, in particular to a check valve, an air inlet device and a fan host.
Background
The range hood is one of the common kitchen appliances, and along with the continuous innovation of range hood technology, the user has higher and higher requirements on the air performance of the range hood.
The air inlet device is one of main components influencing air performance, and comprises a shell component, a volute, a check valve and the like, and airflow enters the volute from the shell component and is exhausted through an air outlet of the volute after being accelerated by the volute.
In the process, the motion trail of the air flow is vertically upwards turned to the air inlet of the volute, then turned to the air outlet of the volute by the air inlet of the volute, and finally turned to the air outlet of the check valve by the air outlet of the volute.
In the prior art, the check valve is in a straight cylinder shape, the centers of the inlet and the outlet of the check valve are arranged just opposite to each other, and the included angle between the motion track of the air inlet of the volute turning to the air outlet of the volute and the motion track of the air outlet of the volute turning to the air outlet of the check valve is relatively small, so that the air flow flows inefficiently and the air flow loss is increased, and the air flow efficiency of the range hood is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an air inlet device to solve the technical problem that in the prior art, the air flow efficiency of a range hood is low.
According to the check valve provided by the utility model, the two ends of the check valve are respectively provided with the air inlet and the air outlet;
the center of the air inlet is a first center, and the center of the air outlet is a second center;
the direction vertical to the plane of the air inlet is a first direction;
the first center projects on the plane where the air inlet is located along a first direction to form a first projection, and the second center projects on the plane where the air inlet is located along the first direction to form a second projection;
the first projection and the second projection are arranged at intervals.
Furthermore, the plane of the air inlet is inclined to the horizontal plane, and the plane of the air outlet is horizontal.
Further, along the airflow flowing direction of the check valve, the outer contour of the check valve is arc-shaped.
Further, the check valve in an arc shape is of an outward convex structure.
The utility model also aims to provide an air inlet device, which comprises a volute and the check valve provided by the utility model;
the volute forms an air duct, and an air outlet and an air inlet are formed in the volute; the air outlet is communicated with the air inlet;
the center of the air inlet is a third center, and the third center projects on the plane where the air inlet is located along the first direction to form a third projection;
the second projection and the third projection are respectively positioned at two sides of the first projection.
Furthermore, a volute tongue is further arranged on the volute;
the plane where the air outlet is located is used for being obliquely arranged with the horizontal plane, and one side, close to the volute tongue, of the air outlet is located below one side, far away from the volute tongue, of the air outlet.
Further, an impeller is arranged in the volute, and the outer diameter of the impeller is D2；
One side of the air outlet close to the volute tongue is a first side;
the check valve is used for facing the vertical cross-section of the wall surface of the first side is an arc line, the radius of the arc line is R, and R is 0.7D2-0.85D2。
Further, the included angle between the plane of the air outlet and the plane of the inlet of the shell component of the air inlet device is less than or equal to 20 degrees.
The utility model also aims to provide a fan main machine which comprises the check valve or the air inlet device.
Further, the fan host also comprises a shell component;
the shell component comprises a top plate, the top plate comprises a first plate body, the first plate body and a horizontal plane are obliquely arranged, and the air outlet is located below the first plate body.
Further, the roof still includes the second plate body, the second plate body level sets up, just the second plate body with the bottom of first plate body is connected.
Further, the housing assembly further comprises a first side plate and a second side plate, the first side plate and the second side plate are arranged oppositely, and the first side plate and the second side plate are respectively connected with the top plate;
the air outlet sets up first curb plate with between the second curb plate, just the air outlet is close to first curb plate sets up, first curb plate is used for setting towards the user.
Furthermore, a hook is arranged on the second plate body.
According to the check valve provided by the utility model, the two ends of the check valve are respectively provided with the air inlet and the air outlet; the center of the air inlet is a first center, and the center of the air outlet is a second center; the direction vertical to the plane of the air inlet is a first direction; the first center projects on the plane where the air inlet is located along a first direction to form a first projection, and the second center projects on the plane where the air inlet is located along the first direction to form a second projection; the first projection and the second projection are arranged at intervals. The movement track of the airflow in the air inlet device of the range hood can be divided into three stages, wherein the airflow moves vertically upwards from an inlet of a shell component of the air inlet device in the first stage; the air flow in the second stage is turned from the air inlet to the air outlet of the volute, and the motion track of the stage can be simplified to point from the center (third center) of the air inlet of the volute to the center of the air outlet; in the third stage, the airflow is turned from the air inlet to the air outlet, and the motion track of the stage can be simplified to point from the center (first center) of the air inlet to the center (second center) of the air outlet; the steering angle from the first stage to the second stage (i.e. the included angle between the first stage motion trajectory and the second stage motion trajectory) is α, and the steering angle from the second stage to the third stage (i.e. the included angle between the second stage motion trajectory and the third stage motion trajectory) is β. The first projection and the second projection are arranged at intervals, so that the second center deflects towards one side of the first center; when the check valve is installed on the volute, one side, away from the center of the volute air inlet, of the first center is the first side, the second center deflects towards the first side, the three-stage motion trail can be further away from the two-stage motion trail, and therefore the steering angle beta is increased. The steering angle beta is increased, the flowing track of the airflow can be smoother, the airflow loss is reduced, the airflow flowing efficiency is increased, and therefore the airflow efficiency of the range hood is improved, and the noise is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of an air intake device provided in an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a check valve of an air intake device provided in accordance with an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a check valve of an air intake device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a range hood provided by the embodiment of the utility model.
Icon: 1-a housing assembly; 11-a first plate body; 12-a second plate body; 2-a volute; 21-air outlet; 22-volute tongue; 3-a check valve; 4-smoke collecting hood.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The utility model provides a check valve, an air inlet device and a fan host, and a plurality of embodiments are provided below for detailed description of the check valve, the air inlet device and the fan host.
Example 1
In the check valve provided in the present embodiment, as shown in fig. 1 to 4, both ends of the check valve 3 are respectively provided with an air inlet and an air outlet; the center of the air inlet is a first center, and the center of the air outlet is a second center; the direction vertical to the plane of the air inlet is a first direction; the first center projects on the plane where the air inlet is located along the first direction to form a first projection, and the second center projects on the plane where the air inlet is located along the first direction to form a second projection; the first projection and the second projection are arranged at intervals.
The movement track of the airflow in the air inlet device can be divided into three stages, wherein the airflow moves vertically upwards from an inlet of a shell component of the air inlet device in the first stage; the air flow in the second stage is turned from the air inlet of the volute 2 to the air outlet 21, and the motion track of the stage can be simplified as that the center of the air inlet (third center) of the volute 2 points to the center of the air outlet 21; in the third stage, the airflow is turned from the air inlet to the air outlet, and the motion track of the stage can be simplified to point from the center (first center) of the air inlet to the center (second center) of the air outlet; the steering angle from the first stage to the second stage (i.e. the included angle between the first stage motion trajectory and the second stage motion trajectory) is α, and the steering angle from the second stage to the third stage (i.e. the included angle between the second stage motion trajectory and the third stage motion trajectory) is β. The first projection and the second projection are arranged at intervals, so that the second center deflects towards one side of the first center; when the check valve 3 is installed on the volute 2, one side of the first center, which is far away from the center of the volute air inlet, is the first side, so that the second center deflects towards the first side, the three-stage motion track can be further far away from the two-stage motion track, and the steering angle beta is increased. The steering angle beta is increased, the flowing track of the airflow can be smoother, the airflow loss is reduced, the airflow flowing efficiency is increased, and therefore the airflow efficiency of the range hood is improved, and the noise is reduced.
The plane of the air inlet can be horizontally arranged or inclined with the horizontal plane; the plane of the air outlet can be horizontally arranged or inclined with the horizontal plane.
In this embodiment, the plane of the air inlet is inclined to the horizontal plane, the plane of the air inlet is parallel to the plane of the air outlet 21, and the plane of the air outlet is horizontal.
The plane level setting that the air exit place can make the flow direction of air current for vertical upwards, with the tuber pipe syntropy of air exit rear end, reduces the impact to the tuber pipe of air exit rear end, reduces lampblack absorber noise and pneumatic loss.
Further, the outer contour of the check valve 3 is arc-shaped in the flow direction of the gas flow of the check valve 3.
The arc shape may be an arc shape or an elliptical arc shape.
Specifically, the outer contour of the check valve 3 is arc-shaped along the flow direction of the air flow of the check valve 3, and the air flow can flow smoothly in the check valve 3, thereby reducing noise and aerodynamic loss.
Furthermore, the arc-shaped check valve 3 is of an outward convex structure, so that air flow inside the check valve 3 can be smoother, and noise and starting loss are reduced.
In this embodiment, check valve 3's income wind gap is square, with the 21 looks adaptations of the air outlet of spiral case 2, and check valve 3's air exit is circular, with the tuber pipe looks adaptations of lampblack absorber, along check valve 3's air current flow direction, check valve 3 is the reducing body of transition in the lower part of last circle.
Example 2
The air intake device provided by the present embodiment, as shown in fig. 1 to 4, includes a volute 2 and a check valve 3 provided by embodiment 1; the volute 2 forms an air duct, and an air outlet 21 and an air inlet are formed in the volute 2; the air outlet 21 is communicated with the air inlet; the center of the air inlet is a third center, and the third center is projected on the plane where the air inlet is located along the first direction to form a third projection; the second projection and the third projection are respectively positioned at two sides of the first projection.
The movement track of the airflow in the air inlet device can be divided into three stages, wherein the airflow moves vertically upwards from an inlet of a shell component of the air inlet device in the first stage; the air flow in the second stage is turned from the air inlet of the volute 2 to the air outlet 21, and the motion track of the stage can be simplified as that the center of the air inlet (third center) of the volute 2 points to the center of the air outlet 21; in the third stage, the airflow is turned from the air inlet to the air outlet, and the motion track of the stage can be simplified to point from the center (first center) of the air inlet to the center (second center) of the air outlet; the steering angle from the first stage to the second stage (i.e. the included angle between the first stage motion trajectory and the second stage motion trajectory) is α, and the steering angle from the second stage to the third stage (i.e. the included angle between the second stage motion trajectory and the third stage motion trajectory) is β. The first projection and the second projection are arranged at intervals, so that the second center deflects towards one side of the first center; when the check valve 3 is installed on the volute 2, one side of the first center, which is far away from the center of the volute air inlet, is the first side, so that the second center deflects towards the first side, the three-stage motion track can be further far away from the two-stage motion track, and the steering angle beta is increased. The steering angle beta is increased, the flowing track of the airflow can be smoother, the airflow loss is reduced, the airflow flowing efficiency is increased, and therefore the airflow efficiency of the range hood is improved, and the noise is reduced.
Further, a volute tongue 22 is also arranged on the volute 2; the plane of the air outlet 21 is used for being arranged obliquely with the horizontal plane, and one side of the air outlet 21 close to the volute tongue 22 is positioned below one side of the air outlet 21 far away from the volute tongue 22.
Compared with the situation that the plane of the air outlet 21 of the volute 2 in the prior art is arranged horizontally, the plane of the air outlet 21 is arranged obliquely with the horizontal plane, one side of the air outlet 21 close to the volute tongue 22 is positioned below one side of the air outlet 21 far away from the volute tongue 22, and the center of the air outlet 21 can be closer to the center of the air inlet of the volute 2 along the horizontal direction, so that the two-stage motion track is far away from the first-stage motion track, and the steering angle alpha is increased. The steering angle alpha is increased, the flowing track of the airflow can be smoother, the airflow loss is reduced, the airflow flowing efficiency is increased, and therefore the airflow efficiency of the range hood is improved, and the noise is reduced.
In addition, the volute 2 is installed inside the shell component 1, and because the plane where the air outlet 21 is located is arranged in an inclined mode with the horizontal plane, the volute 2 with the larger size can be accommodated under the condition that the size of the shell component 1 is not changed, and therefore air performance is improved.
The volute 2 can be a double-air inlet centrifugal air duct, a single-air inlet centrifugal air duct and any other suitable forms.
In addition, the bottom of the shell component 1 is also provided with a fume collecting hood 4, and the inlet of the shell component 1 is communicated with the fume collecting hood 4.
Further, an impeller is arranged in the volute 2, and the outer diameter of the impeller is D2(ii) a One side of the air outlet 21 close to the volute tongue 22 is a first side; the vertical cross-section of the wall surface of the check valve 3, which is convex toward the first side, is a circular arc line, the radius of which is R, R being 0.7D2-0.85D2。
The radius of the arc line is determined according to the formula, so that the air flow in the check valve 3 can flow smoothly, and the air performance of the range hood is improved.
The plane of the air outlet 21 and the plane of the inlet of the shell component 1 are arranged in an inclined mode, and the included angle between the plane of the air outlet 21 and the horizontal plane is larger than 0 degree and smaller than or equal to 20 degrees.
Preferably, the included angle between the plane of the air outlet 21 and the horizontal plane is 10 degrees, which can keep the alpha and beta at proper sizes, make the air flow track smoother, reduce the air flow loss, and make the air flow efficiency increase, thereby improving the efficiency of the range hood and reducing the noise.
Example 3
The blower main unit provided by the present embodiment, as shown in fig. 1 to 4, includes the check valve 3 provided by embodiment 1 or the air intake device provided by embodiment 2. The movement track of the airflow in the air inlet device can be divided into three stages, wherein the airflow moves vertically upwards from an inlet of a shell component of the air inlet device in the first stage; the air flow in the second stage is turned to the air outlet 21 from the air inlet of the volute 2, and the motion track in the stage can be simplified to point from the center of the air inlet of the volute 2 to the center of the air outlet 21; in the third stage, the air flow is turned from the air inlet to the air outlet, and the motion track of the stage can be simplified to point from the center of the air inlet to the center of the air outlet; the steering angle from the first stage to the second stage (i.e. the included angle between the first stage motion trajectory and the second stage motion trajectory) is α, and the steering angle from the second stage to the third stage (i.e. the included angle between the second stage motion trajectory and the third stage motion trajectory) is β. The outer contour of the check valve 3 is used for protruding towards the first side, so that the exhaust outlet can deflect towards one side of the air outlet 21 far away from the volute tongue 22, and the center of the exhaust outlet can be closer to the center of the air inlet along the horizontal direction, so that the three-stage motion track is further far away from the two-stage motion track, and the steering angle beta can be increased. The steering angle beta is increased, the flowing track of the airflow can be smoother, the airflow loss is reduced, the flowing efficiency of the airflow is increased, and therefore the efficiency of the range hood is improved, and the noise is reduced.
Specifically, the air intake device further comprises a shell assembly 1; the volute 2 is arranged inside the shell assembly 1, and the check valve 3 is arranged outside the volute 2; the shell assembly 1 comprises a top plate, a through hole is formed in the top plate, the top of the volute 2 is connected with the inner surface of the top plate, and the bottom of the check valve 3 is connected with the outer surface of the top plate; the air outlet 21, the through hole and the air inlet are communicated in sequence.
In this embodiment, air is introduced into two sides of the volute 2 and is longitudinally installed in the housing assembly 1, and two air inlets of the volute 2 respectively face two oppositely-arranged side walls of the housing assembly 1. The air outlet 21 department at 2 tops of spiral case sets up the flange, and the cooperation of flange roof is connected, and the income wind gap of check valve 3 corresponds the air outlet 21 position and installs on the surface of roof.
Further, the top plate includes a first plate 11, the first plate 11 is inclined to the horizontal plane, and the air outlet 21 is located below the first plate 11.
The included angle of first plate body 11 and horizontal plane can be the same or similar with the included angle of air outlet 21 place plane and horizontal plane to the incline direction of first plate body 11 for the horizontal plane is the same with the incline direction of air outlet 21 place plane for the horizontal plane, so that first plate body 11 and the air outlet 21 flange cooperation of spiral case 2, can reduce the risk of drippage behind the shell subassembly 1 top greasy dirt adheres to.
Further, the top plate further comprises a second plate body 12, the second plate body 12 is horizontally arranged, and the second plate body 12 is connected with the bottom end of the first plate body 11.
The second board 12 is horizontally disposed, so that it is convenient to mount appropriate components such as an electrical box on the second board 12.
Further, the housing assembly 1 further comprises a first side plate and a second side plate, the first side plate and the second side plate are arranged oppositely, and the first side plate and the second side plate are respectively connected with the top plate; the air outlet 21 is arranged between the first side plate and the second side plate, the air outlet 21 is close to the first side plate, and the first side plate is used for being arranged towards a user.
The first side plate is for being arranged towards a user and may be used for arranging a panel, i.e. the first side plate is located at a front end face of the housing assembly 1 and the second side plate is located at a rear end face of the housing assembly 1.
Further, a hook is provided on the second plate 12.
Specifically, the air outlet 21 is disposed near the front end face of the housing assembly 1, and a flange structure may be disposed on the second plate 12 located at the rear end of the housing assembly, and a hook may be mounted on the flange structure. Compared with the prior art, the hook is arranged on the upper surface of the top plate of the housing assembly 1, the second plate body 12 is located at the bottom of the first plate body 11, and the hook is arranged on the second plate body 12, so that the overall height of the range hood can be effectively reduced by 40-60 mm.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (13)
1. The check valve is characterized in that both ends of the check valve (3) are respectively provided with an air inlet and an air outlet;
the center of the air inlet is a first center, and the center of the air outlet is a second center;
the direction vertical to the plane of the air inlet is a first direction;
the first center projects on the plane where the air inlet is located along a first direction to form a first projection, and the second center projects on the plane where the air inlet is located along the first direction to form a second projection;
the first projection and the second projection are arranged at intervals.
2. The check valve of claim 1, wherein the plane of the air inlet is inclined from the horizontal plane, and the plane of the air outlet is horizontal.
3. The non-return valve according to claim 1, characterized in that the outer contour of the non-return valve (3) in the flow direction of the gas flow of the non-return valve (3) is arc-shaped.
4. Check valve according to claim 3, characterized in that the arc-shaped check valve (3) is of convex configuration.
5. An air intake arrangement, characterized by comprising a volute (2) and a non-return valve (3) according to any one of claims 1-4;
the volute (2) forms an air channel, and an air outlet (21) and an air inlet are formed in the volute (2); the air outlet (21) is communicated with the air inlet;
the center of the air inlet is a third center, and the third center projects on the plane where the air inlet is located along the first direction to form a third projection;
the second projection and the third projection are respectively positioned at two sides of the first projection.
6. The air intake device according to claim 5, characterized in that the volute (2) is further provided with a volute tongue (22);
the plane of the air outlet (21) is used for being arranged obliquely with the horizontal plane, and one side of the air outlet (21) close to the volute tongue (22) is positioned below one side of the air outlet (21) far away from the volute tongue (22).
7. An air intake device according to claim 6, wherein an impeller is arranged in the volute (2), and the outer diameter of the impeller is D2；
One side of the air outlet (21) close to the volute tongue (22) is a first side;
the check valve (3) is used for the vertical section towards the wall surface of the first side to be a circular arc line, the radius of the circular arc line is R, and R is 0.7D2－0.85D2。
8. An air inlet arrangement according to any of the claims 5-7, characterized in that the angle between the plane of the air outlet (21) and the plane of the inlet opening of the housing assembly (1) of the air inlet arrangement is smaller than or equal to 20 °.
9. A fan unit, characterized in that it comprises a non-return valve (3) according to any of claims 1-4 or an air intake device according to any of claims 5-8.
10. The fan host according to claim 9, further comprising a housing assembly (1);
the shell component (1) comprises a top plate, the top plate comprises a first plate body (11), the first plate body (11) is obliquely arranged with a horizontal plane, and an air outlet (21) of the volute (2) is located below the first plate body (11).
11. The blower main unit according to claim 10, wherein the top plate further comprises a second plate body (12), the second plate body (12) is horizontally disposed, and the second plate body (12) is connected to the bottom end of the first plate body (11).
12. The blower host according to claim 11, wherein the housing assembly (1) further comprises a first side plate and a second side plate, the first side plate and the second side plate are arranged opposite to each other, and the first side plate and the second side plate are respectively connected with the top plate;
the air outlet (21) is arranged between the first side plate and the second side plate, the air outlet (21) is arranged close to the first side plate, and the first side plate is used for being arranged towards a user.
13. The blower main unit according to claim 12, wherein a hook is provided on the second plate body (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121798999.0U CN216047905U (en) | 2021-08-03 | 2021-08-03 | Check valve, air inlet device and fan host |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121798999.0U CN216047905U (en) | 2021-08-03 | 2021-08-03 | Check valve, air inlet device and fan host |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216047905U true CN216047905U (en) | 2022-03-15 |
Family
ID=80618900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121798999.0U Active CN216047905U (en) | 2021-08-03 | 2021-08-03 | Check valve, air inlet device and fan host |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216047905U (en) |
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2021
- 2021-08-03 CN CN202121798999.0U patent/CN216047905U/en active Active
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