CN214063387U - Fan and range hood - Google Patents
Fan and range hood Download PDFInfo
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- CN214063387U CN214063387U CN202023173749.6U CN202023173749U CN214063387U CN 214063387 U CN214063387 U CN 214063387U CN 202023173749 U CN202023173749 U CN 202023173749U CN 214063387 U CN214063387 U CN 214063387U
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Abstract
The utility model provides a fan and a range hood, relating to the technical field of ventilation equipment, wherein the fan comprises a volute, an air inlet and an air outlet which are mutually communicated are arranged on the volute, and an air channel is formed between the air inlet and the air outlet; the volute is provided with at least one bent part arranged along the air duct at a position close to the air inlet; wherein at least one of the bent portions has an arc-shaped guide surface extending from the air inlet along the bent portion. The utility model provides a fan has the arc guide face at the part of buckling that the spiral case set up, and the arc guide face makes the cross-section in wind channel more tend to circularly to air current in the fan just carries out the change that the square changes the circle in the spiral case, has prolonged the transition that the cross-section of square changes the circle, has reduced the air performance loss that the square changes the circle, has reduced the formation of noise.
Description
Technical Field
The utility model belongs to the technical field of ventilation equipment's technique and specifically relates to a fan and range hood are related to.
Background
The section of an air duct of a cigarette machine on the market is rectangular, and the section of an air pipe is circular; the check valve between the smoke machine and the air pipe is generally used for transition of a square-to-round section, but due to the limitation of the height of the check valve, the height of the check valve is generally between 60 and 120mm, the transition distance is short, the air flow entering the check valve is accelerated through an air channel in the volute, the flow speed is high, the change of the section causes great air performance loss, and great noise is generated.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a fan and range hood to the too big technical problem of noise when the present fan of solution uses.
The utility model provides a fan, which comprises a volute, wherein an air inlet and an air outlet which are mutually communicated are arranged on the volute, and an air channel is formed between the air inlet and the air outlet;
the volute is provided with at least one bent part arranged along the air duct at a position close to the air inlet; wherein at least one of the bent portions has an arc-shaped guide surface extending from the air inlet along the bent portion.
Furthermore, the volute comprises an air duct lower shell and an air duct upper shell arranged on the air duct lower shell, and the air outlet is formed in the air duct upper shell;
the air duct upper shell is provided with an upper opening, the air duct lower shell is provided with a lower opening, and the upper opening and the lower opening are spliced to form the air inlet; the bent portion extends downwards along the air duct from the air outlet of the air duct upper shell.
Further, the bent portion extends downwards from the air outlet of the air duct upper shell to the lower end of the air duct upper shell along the air duct.
Furthermore, the air outlet is provided with four bent parts arranged along the air duct, each bent part is provided with an arc-shaped guide surface, and the cross section of the air duct at the air outlet is in a round-corner rectangular shape.
Further, the arc-shaped guide surface is gradually reduced from the air outlet of the volute along the fillet of the downward section of the air duct.
Further, the check valve comprises a check valve shell which is provided with an inlet and an outlet, and an air flow channel is formed between the inlet and the outlet;
the check valve shell is arranged at the air outlet of the volute, the inlet of the check valve shell is communicated with the air outlet, and the inner contour of the cross section of the air outlet is the same as that of the cross section of the inlet.
Further, at least one arc-shaped surface is arranged on the inner wall of the check valve housing from the inlet to the outlet, so that the cross section of the air flow channel from the inlet to the outlet is rectangular with at least one round corner.
Further, the area of the cross section of the airflow passage from the inlet to the outlet along the airflow passage is gradually increased; and/or the air flow channel gradually increases from the inlet to the outlet along the round angle of the cross section of the air flow channel.
Further, the inlet of the check valve housing is provided with an air inlet interface, and the shape of the outer contour of the air inlet interface is the same as that of the inner contour.
Further, four arc-shaped surfaces are provided on the inner wall of the check valve housing from the inlet to the outlet, so that the cross section of the air flow passage from the inlet to the outlet is a rounded rectangle.
Further, the fan also comprises a driving motor, a check ring and an impeller assembly;
the volute is characterized in that the retainer ring is arranged at the air inlet of the volute, the drive motor and the impeller assembly are arranged in the volute, and the impeller assembly is fixed on the drive motor through the cover cap.
The utility model provides a fan has the arc guide face at the part of buckling that the spiral case set up, and the arc guide face makes the cross-section in wind channel more tend to circularly to air current in the fan just carries out the change that the square changes the circle in the spiral case, has prolonged the transition that the cross-section of square changes the circle, has reduced the air performance loss that the square changes the circle, has reduced the formation of noise.
The utility model also provides a range hood, including the aforesaid the fan.
The utility model provides a range hood uses above-mentioned fan, can reduce the noise that produces when using, improves user's use and experiences.
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 embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of an internal structure of a fan according to an embodiment of the present invention;
FIG. 2 is a schematic longitudinal sectional view of the blower of FIG. 1 with the volute and check valve connected;
FIG. 3 is a schematic structural view of the blower of FIG. 1;
FIG. 4 is an exploded view of the blower of FIG. 1;
fig. 5 is a schematic structural view of the check valve shown in fig. 1.
Icon: 100-a check valve housing; 101-an air intake interface; 102-an outlet interface; 103-an air flow channel; 104-inlet; 105-an outlet; 200-a volute; 201-air duct upper shell; 202-air duct lower shell; 203-an arcuate guide surface; 300-an air inlet; 301-upper opening; 302-lower opening; 400-air outlet; 500-bending part; 600-a drive motor; 700-an impeller assembly; 800-a retainer ring; 900-cover cap; 110-duct side panels.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. In the present application, unless otherwise specified, the term "up-down direction" refers to the direction indicated by the ab arrow in fig. 1, the term "left-right direction" refers to the direction indicated by the cd arrow in fig. 1, and the remaining directions are all referred to the above-mentioned directions.
As shown in fig. 1-5, the present invention provides a fan, which includes a spiral case 200, the spiral case 200 is provided with an air inlet 300 and an air outlet 400 which are communicated with each other, and an air duct is formed between the air inlet 300 and the air outlet 400;
the volute 200 is provided with at least one bent part 500 arranged along the air duct near the air inlet 300; wherein at least one of the bent portions 500 has an arc-shaped guide surface 203, and the arc-shaped guide surface 203 extends from the intake vent 300 along the bent portion 500.
In some embodiments, at least one bent portion 500 is disposed on the volute 200 near the air inlet 300, and the bent portion 500 may have one or more bent portions, wherein at least one bent portion 500 has an arc-shaped guide surface 203, the arc-shaped guide surface 203 extends downward from the air outlet 400 along the bent portion 500, and the cross section of the bent portion 500 having the arc-shaped guide surface 203 is rounded, so that the cross section of the air outlet 400 is no longer rectangular, and thus the air flow changes from a square circle to a circle in the volute 200 of the blower, the transition from the cross section of the square circle to the circle is prolonged, the air performance loss of the square circle is reduced, and the noise generation is reduced.
Based on the above embodiment, further, the volute 200 includes an air duct lower casing 202 and an air duct upper casing 201 disposed on the air duct lower casing 202, and the air outlet 400 is disposed on the air duct upper casing 201; the air duct upper shell 201 is provided with an upper opening 301, the air duct lower shell 202 is provided with a lower opening 302, and the upper opening 301 and the lower opening 302 are spliced to form the air inlet 300; the bent portion 500 extends downward from the air outlet 400 of the air duct upper shell 201 along the air duct.
The volute 200 is formed by splicing the air duct upper shell 201 and the air duct lower shell 202, the upper opening 301 of the air duct upper shell 201 and the lower opening 302 of the air duct lower shell 202 form the air inlet 300, when air flow entering the air duct flows to the air duct formed by the air duct upper shell 201 below the air inlet 300, the air flow is in square-to-round transition, and the problems that due to the height limitation of a fan, the height of a check valve on the volute 200 is limited, the transition distance is short, the transition is severe, and the square-to-round smooth transition cannot be achieved are solved.
Based on the above embodiment, further, the bent portion 500 extends from the air outlet 400 of the air duct upper shell 201 to the lower end of the air duct upper shell 201 along the air duct.
Each bent part 500 extends from the lower end of the air duct upper shell 201 to the upper end of the air duct upper shell 201, the cross section of each bent part 500 with the arc-shaped guide surface 203 is a round angle, when the air flow entering the air duct flows to the air duct formed by the air duct upper shell 201 below the air inlet 300, the air flow is in the transition from square to round, the longer arc-shaped guide surface 203 prolongs the transition from the cross section from square to round, reduces the air performance loss from square to round, and reduces the noise.
The air duct upper shell 201 and the air duct lower shell 202 are generally manufactured in an injection molding mode, and the air duct upper shell 201 and the air duct lower shell 202 are connected in a screw or buckle mode; the air outlet 400 of the air duct upper shell 201 is provided with a diffusion section, and the cross section of the diffusion section increases the area of the cross section closer to the air outlet 400, so that the diffusion section is eliminated, and the air duct upper shell 201 is favorable for core pulling of plastic parts during injection molding and processing and manufacturing. And the height of the whole fan is reduced and the cost is reduced under the condition of ensuring the unchanged performance.
Based on the above embodiment, further, the air outlet 400 has four bending portions 500 arranged along the air duct, each bending portion 500 has an arc-shaped guide surface 203, and the cross section of the air duct at the air outlet 400 is a rounded rectangle.
The four bent portions 500 at the air outlet 400 are all provided with arc-shaped guide surfaces 203, so that the cross section of the air duct at the air outlet 400 is in a round rectangle shape. The transition from square to round of the air flow is performed in the volute 200, so that the air duct and the air flow channel 103 form smooth and smooth transition, and the air performance loss from square to round is greatly reduced.
As shown in fig. 2, based on the above embodiment, further, the arc-shaped guide surface 203 gradually decreases from the air outlet 400 of the scroll casing 200 along the fillet of the downward cross section of the air duct.
The arc-shaped guide surface 203 gradually decreases from the air outlet 400 of the volute 200 along the fillet of the downward section of the air duct, so that the section of the air duct closer to the air outlet 400 tends to be more circular, the air flow flowing out from the air outlet 400 is closer to meet the requirement of an air pipe, the transition length of the air flow from square to round is increased, the air flow from square to round is more smoothly transited, and air loss is reduced.
Based on the above embodiment, further, the check valve further comprises a check valve, the check valve comprises a check valve housing 100, the check valve housing 100 is provided with an inlet 104 and an outlet 105, and an air flow channel 103 is formed between the inlet 104 and the outlet 105;
the check valve housing 100 is disposed at the outlet vent 400 of the scroll case 200, the inlet 104 of the check valve housing 100 communicates with the outlet vent 400, and the inner contour of the cross-section of the outlet vent 400 is the same as that of the inlet 104.
An air outlet 400 for air flow to enter the air inlet 300 and for air flow to flow out is arranged on the volute 200, and in order to enable the air flow in the fan to enter the inlet 104 of the check valve shell 100 from the air outlet 400 to smoothly transit, the inner contour of the cross section of the air outlet 400 is the same as that of the inlet 104; when the airflow in the volute 200 enters the inlet 104 of the check valve housing 100 from the air outlet 400, the inner wall of the airflow channel 103 is smooth, so that the air performance loss can be reduced, the air volume can be increased, and the noise can be reduced.
For better transition of the air flow, further, at least one arc-shaped surface is provided on the inner wall of the check valve housing 100 from the inlet 104 to the outlet 105, so that the cross section of the air flow passage 103 from the inlet 104 to the outlet 105 is a rectangle with at least one round corner.
In some embodiments, the check valve housing 100 is provided with an inlet 104 at a lower end and an outlet 105 at an upper end, and the air flow enters the check valve housing 100 from the inlet 104, passes through the air flow passage 103, and enters the air duct having a circular cross-section from the outlet 105.
The cross-section of the check valve housing 100 is rounded rectangular to facilitate the flow of air through the air flow passage 103 which gradually changes into a circular cross-section, reducing air performance loss during the squaring to rounding process, and reducing noise formation.
As shown in fig. 2 and fig. 5, based on the above embodiment, further, the area of the cross section of the airflow channel 103 from the inlet 104 to the outlet 105 along the airflow channel 103 is gradually increased, or the fillet of the cross section of the airflow channel 103 from the inlet 104 to the outlet 105 along the airflow channel 103 is gradually increased.
The area of the cross section of the air flow channel 103 from the inlet 104 to the outlet 105 of the check valve housing 100 is gradually increased, so that the cross section in the flow velocity direction of the air flow is gradually increased, the air flow is decelerated, the air performance loss is reduced, the transition from the air channel square outlet 105 of the fan to the variable cross section of the circular air pipe is smoother, the loss is reduced, and the air volume noise is reduced.
The round angle of the cross section from the inlet 104 to the outlet 105 of the airflow channel 103 is gradually increased, so that the cross section of the airflow channel 103 is more and more like a circle, the square-to-round transition of the cross section of the airflow channel 103 is realized, the transition is smoother, and the loss of air performance is reduced.
The area of the cross section of the airflow channel 103 from the inlet 104 to the outlet 105 along the airflow channel 103 is gradually increased, and the round angle is gradually increased, so that the cross section of the airflow channel 103 is more and more like a circle and the cross section of the airflow channel in the flow velocity direction is gradually increased, the airflow is decelerated, the loss of air performance is better reduced, and the formed noise is reduced.
Based on the above embodiment, further, the inlet 104 of the check valve housing 100 is provided with the air inlet 101, and the shape of the outer contour of the air inlet 101 is the same as the shape of the inner contour.
An air inlet interface 101 and an air outlet interface 102 are arranged on the check valve housing 100, the air inlet interface 101 of the check valve housing 100 is used for connecting with the scroll casing 200, the air outlet interface 102 is used for connecting with the air pipe, generally, the inner contour of the air inlet interface 101 is the same as that of the inlet 104, and the inner contour of the air outlet interface 102 is the same as that of the air outlet interface 102.
In order to make the air flow passage more circular, four arc-shaped surfaces are further provided on the inner wall of the check valve housing 100 from the inlet 104 to the outlet 105, so that the cross section of the air flow passage 103 from the inlet 104 to the outlet 105 is a rounded rectangle.
As shown in fig. 4, based on the above embodiment, further, the fan further includes a driving motor 600, a retainer ring 800 and an impeller assembly 700; the retainer ring 800 is disposed at the air inlet 300 of the volute 200, the driving motor and the impeller assembly 700 are disposed in the volute 200, and the impeller assembly 700 is fixed to the driving motor through a cap 900.
In some embodiments, an air duct side plate 110 is further disposed on the opposite side of the air inlet 300 of the volute 200, and the driving motor 600 is disposed on the air duct side plate 110; the impeller is located in the scroll case 200 and fixed to the driving motor 600 by a cap 900.
The fan is provided with a driving motor 600, the driving motor 600 can drive the impeller assembly 700 to rotate, so that air can enter the volute 200 from the air inlet 300, the impeller assembly 700 is fixed on the rotating shaft of the driving motor 600 through the cap 900, and the impeller assembly 700 cannot fall off the rotating shaft of the driving motor 600 when the cap 900 rotates from the impeller assembly 700.
The retainer ring 800 is disposed at the air inlet 300 of the volute 200 for silencing the noise generated by the volute 200.
The utility model provides a fan bending part 500 that sets up in spiral case 200 has arc guide face 203, and arc guide face 203 makes the cross-section in wind channel more tend to circularly to air current in the fan just carries out the change that the square changes the circle in spiral case 200, has prolonged the transition that the square changes the cross-section of circle, has reduced the air performance loss that the square changes the circle, has reduced the formation of noise.
The utility model also provides a range hood, including the aforesaid the fan.
The utility model provides a range hood uses above-mentioned fan, can reduce the noise that produces when using, improves user's use and experiences.
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; although the present invention has been described in detail with reference to the foregoing embodiments, it should 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; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (12)
1. The fan is characterized by comprising a volute (200), wherein an air inlet (300) and an air outlet (400) which are communicated with each other are arranged on the volute (200), and an air channel is formed between the air inlet (300) and the air outlet (400);
the volute (200) is provided with at least one bent part (500) arranged along an air duct at a position close to the air inlet (300); wherein at least one of the bent portions (500) has an arc-shaped guide surface (203), and the arc-shaped guide surface (203) extends from the air inlet along the bent portion.
2. The fan according to claim 1, wherein the volute (200) comprises a lower air duct shell (202) and an upper air duct shell (201) arranged on the lower air duct shell (202), and the air outlet (400) is arranged on the upper air duct shell (201);
the air duct upper shell (201) is provided with an upper opening (301), the air duct lower shell (202) is provided with a lower opening (302), and the upper opening (301) and the lower opening (302) are spliced to form the air inlet (300); the bent part (500) extends downwards along the air duct from the air outlet (400) of the air duct upper shell (201).
3. The fan of claim 2, wherein the bent portion (500) extends from the air outlet (400) of the duct upper shell (201) down the duct to the lower end of the duct upper shell (201).
4. The fan according to claim 1, wherein the air outlet (400) has four bent portions (500) along the air duct, each bent portion (500) has an arc-shaped guide surface (203), and the cross section of the air duct at the air outlet (400) is a rounded rectangle.
5. The fan according to claim 1, wherein the curved guide surface (203) tapers from the outlet opening (400) of the volute (200) along a radius of the downward cross-section of the wind path.
6. The fan according to claim 1, further comprising a check valve housing (100), the check valve housing (100) being provided with an inlet (104) and an outlet (105), the inlet (104) and the outlet (105) forming an air flow channel (103) therebetween;
the check valve housing (100) is disposed at an air outlet (400) of the scroll (200), an inlet (104) of the check valve housing (100) communicates with the air outlet (400), and an inner contour of a cross-section of the air outlet (400) is the same as an inner contour of a cross-section of the inlet (104).
7. The fan according to claim 6, characterized in that the inner wall of the check valve housing (100) from the inlet (104) to the outlet (105) is provided with at least one arc-shaped surface so that the cross-section of the air flow channel (103) from the inlet (104) to the outlet (105) is rectangular with at least one rounded corner.
8. The fan according to claim 7, wherein the area of the cross section of the air flow channel (103) from the inlet (104) to the outlet (105) along the air flow channel (103) is gradually larger; and/or the air flow channel (103) is gradually increased from the inlet (104) along the round angle of the cross section of the air flow channel (103) to the outlet (105).
9. The fan according to claim 6, characterized in that the inlet (104) of the check valve housing (100) is provided with an air inlet interface (101), the shape of the outer contour of the air inlet interface (101) being the same as the shape of the inner contour.
10. The fan according to claim 6, characterized in that four arc-shaped faces are provided on the inner wall of the check valve housing (100) from the inlet (104) to the outlet (105) so that the cross section of the air flow channel (103) from the inlet (104) to the outlet (105) is a rounded rectangle.
11. The fan of any of claims 1-10, further comprising a drive motor (600), a retainer ring (800), and an impeller assembly (700);
the volute (200) is characterized in that the retainer ring (800) is arranged at the air inlet (300) of the volute (200), the driving motor (600) and the impeller assembly (700) are arranged in the volute (200), and the impeller assembly (700) is fixed on the driving motor (600) through a cover cap (900).
12. A range hood comprising the fan of any one of claims 1-11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023173749.6U CN214063387U (en) | 2020-12-24 | 2020-12-24 | Fan and range hood |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023173749.6U CN214063387U (en) | 2020-12-24 | 2020-12-24 | Fan and range hood |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214063387U true CN214063387U (en) | 2021-08-27 |
Family
ID=77387136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023173749.6U Active CN214063387U (en) | 2020-12-24 | 2020-12-24 | Fan and range hood |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214063387U (en) |
-
2020
- 2020-12-24 CN CN202023173749.6U patent/CN214063387U/en active Active
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