CN112343865B - Air duct structure and air treatment device - Google Patents
Air duct structure and air treatment device Download PDFInfo
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- CN112343865B CN112343865B CN201910732135.XA CN201910732135A CN112343865B CN 112343865 B CN112343865 B CN 112343865B CN 201910732135 A CN201910732135 A CN 201910732135A CN 112343865 B CN112343865 B CN 112343865B
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- air
- air duct
- flow guide
- duct
- air outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/522—Casings; Connections of working fluid for axial pumps especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/02—Units comprising pumps and their driving means
- F04D25/08—Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/002—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids by varying geometry within the pumps, e.g. by adjusting vanes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/541—Specially adapted for elastic fluid pumps
- F04D29/545—Ducts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
- F04D29/56—Fluid-guiding means, e.g. diffusers adjustable
- F04D29/563—Fluid-guiding means, e.g. diffusers adjustable specially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Air-Flow Control Members (AREA)
Abstract
The invention discloses an air duct structure and an air treatment device, wherein the air duct structure comprises an air duct and a first flow guide piece, wherein the air duct is cylindrical and is provided with an air inlet and an air outlet opposite to the air inlet; the first flow guide piece is arranged at the air outlet, an air outlet duct is formed between the outer wall surface of the first flow guide piece and the inner wall surface of the air duct, and the first flow guide piece and the air duct can move relatively. The air duct structure can change the air outlet speed and the air outlet direction.
Description
Technical Field
The invention relates to the technical field of fans, in particular to an air duct structure and an air treatment device.
Background
The air duct structure of the existing electric fan is generally fixed and unchangeable, the air outlet direction is basically positively correlated with the gear size, and the variation range is small. The air-out direction and the air-out speed of fan are adjusted by mechanism and the gear mechanism of shaking the head, but the cost of fan can be increased to the setting of mechanism and gear mechanism of shaking the head, can not satisfy people to produce the requirement of sexual valence relative.
Disclosure of Invention
The invention mainly aims to provide an air duct structure and aims to solve the technical problem that the air outlet speed cannot be changed by the conventional air duct structure.
In order to achieve the above object, the present invention provides an air duct structure, including:
the air duct is cylindrical and is provided with an air inlet and an air outlet opposite to the air inlet; and
the first flow guide piece is arranged at the air outlet, an air outlet duct is formed between the outer wall surface of the first flow guide piece and the inner wall surface of the air duct, and the first flow guide piece and the air duct can move relatively.
Optionally, at least one of the first flow guide and the air duct is movable along an axial direction of the air duct.
Optionally, the air outlet duct has an air passing area that decreases along the air outlet direction.
Optionally, the air duct structure further includes a second flow guide piece disposed at the air outlet, and the second flow guide piece is disposed in a tapered cylindrical shape in the air outlet direction.
Optionally, the second baffle is open at both ends.
Optionally, the second flow guide is located between the first flow guide and the air duct.
Optionally, the number of the second flow guiding elements is at least two, and the at least two second flow guiding elements are sleeved between the air duct and the first flow guiding element.
Optionally, the number of the second flow guide member is one, the air outlet duct includes a first sub-duct and a second sub-duct, the first sub-duct is formed between an outer wall surface of the second flow guide member and an inner wall surface of the air duct, and the second sub-duct is formed between an outer wall surface of the first flow guide member and an inner wall surface of the second flow guide member.
Optionally, the air duct structure further comprises a wind wheel arranged at the air inlet, the outer diameter of the wind wheel is D, and the diameter of the air inlet is 1.1D-1.2D.
Optionally, the width of the air inlet end or the air outlet end of the first sub-air duct is 0-D/2, and the width of the air inlet end or the air outlet end of the second sub-air duct is 0-D/2.
Optionally, an included angle α between a connection line between the air inlet end and the air outlet end of the first flow guide member bus and the axis of the air duct1Is 6-40 degrees, and the included angle alpha between the connecting line between the air inlet end and the air outlet end of the second diversion part bus and the air duct axis2Is 6 to 40 degrees.
Optionally, an included angle β between a tangent line of a point on a bus of the first flow guide member and an axis of the air duct1Is 0-60 degrees, and the included angle beta between the tangent of the point on the generatrix of the second flow guide piece and the axis of the air duct2Is 0 to 60 degrees.
Optionally, the second flow guide member is movable in an axial direction of the air duct.
Optionally, the air duct, the first flow guide part and the second flow guide part are coaxially arranged.
Optionally, the first flow guide piece is of a circular truncated cone structure.
Optionally, the air duct is arranged in a tapering manner along the air outlet direction.
Optionally, an included angle β between a tangent line of a point on a generatrix of the air duct and an axis of the air duct3Is 0 to 60 degrees.
The invention also provides an air treatment device, which comprises an air duct structure, wherein the air duct structure comprises:
the air duct is cylindrical and is provided with an air inlet and an air outlet opposite to the air inlet;
and
the first flow guide piece is arranged at the air outlet, an air outlet duct is formed between the outer wall surface of the first flow guide piece and the inner wall surface of the air duct, and at least one of the first flow guide piece and the air duct can move along the axial direction of the air duct so as to adjust the air outlet area of the air outlet duct.
The air duct structure comprises an air duct and a first flow guide piece, wherein the air duct is cylindrical and is provided with an air inlet and an air outlet opposite to the air inlet; the first flow guide piece is arranged at the air outlet, an air outlet duct is formed between the outer wall surface of the first flow guide piece and the inner wall surface of the air duct, and the first flow guide piece and the air duct can move relatively; therefore, when the wind wheel rotates at a certain rotating speed, airflow with a certain direction and size is output, the airflow flows into the air duct and then flows to the air outlet duct between the first flow guide piece and the air duct, the relative position of the first flow guide piece and the air duct can be changed by driving the first flow guide piece and the air duct to move relatively, so that the distance between the first flow guide piece and the air duct is changed, the air outlet area of the air outlet duct is changed, the air outlet speed of the air outlet duct is changed, the air outlet angle of the air outlet duct can be changed, and the air outlet direction of the air outlet duct is also changed.
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, 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 structures shown in the drawings without creative efforts.
FIG. 1 is a schematic view of a duct structure according to the present invention;
FIG. 2 is a schematic structural view of another perspective of the air duct structure of the present invention;
FIG. 3 is a schematic view of the interior details of the air duct structure shown in FIG. 1;
FIG. 4 is a schematic view of the air duct structure of FIG. 1 in a use state;
fig. 5 is a schematic structural view of the first flow guide member in fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | |
130 | |
| 110 | |
131 | |
| 111 | |
132 | |
| 112 | |
140 | Second |
| 120 | First |
150 | Wind wheel |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative positional relationship between the components, the movement situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indications are changed accordingly. In addition, the meaning of "and/or" appearing throughout is to include three juxtapositions, exemplified by "A and/or B" including either scheme A, or scheme B, or a scheme in which both A and B are satisfied.
The invention provides an air duct structure.
Referring to fig. 1 to 5, in the air duct structure 100 according to the present invention, the air duct structure 100 includes an air duct 110 and a first guiding element 120, wherein the air duct 110 is cylindrical and has an air inlet 111 and an air outlet 112 opposite to the air inlet 111; the first flow guiding element 120 is disposed at the air outlet 112, an air outlet duct 130 is formed between an outer wall surface of the first flow guiding element 120 and an inner wall surface of the air duct 110, and the first flow guiding element 120 and the air duct 110 are movable relative to each other.
In the embodiment of the present invention, the air duct 110 is cylindrical, wherein the air duct 110 may be straight cylindrical, that is, a generatrix of the air duct 110 is parallel to an axial direction of the air duct 110; of course, the air duct 110 may also be disposed in a gradually reducing manner along the air outlet direction, that is, the generatrix of the air duct 110 is inclined towards the axial direction of the air duct 110 along the air outlet direction. The air duct structure 100 further includes a fan assembly, and the fan assembly is disposed at the air inlet 111 of the air duct 110 and is configured to drive an air flow to flow into the air duct 110 from the air inlet 111. Specifically, the fan assembly includes a wind wheel 150 and a driving motor for driving the wind wheel 150 to rotate. It will be appreciated that to facilitate mounting of the drive motor, the fan assembly further includes a motor mount for mounting the drive motor.
The first flow guiding element 120 is located in the air duct 110 and is disposed near the air outlet 112. The first flow guide member 120 may have various structures, for example, the first flow guide member 120 may have a cylindrical structure with two open ends, and of course, the first flow guide member 120 may also have a circular truncated cone structure, which is not limited herein. An air outlet duct 130 is formed between the first flow guiding element 120 and the air duct 110, and the air flow flows into the air duct 110 from the air inlet 111 and then is blown out through the air outlet duct 130. Here, the distance between the first flow guide 120 and the air duct 110 can be changed by driving the first flow guide 120 and the air duct 110 to move relatively, so as to change the air outlet area of the air outlet duct 130. It should be noted that if the air outlet area is decreased, the air outlet speed is increased, and meanwhile, the air outlet angle is also changed, so that the air outlet direction is also changed; if the air-out area increases, then air-out speed diminishes, and the air-out angle also can change simultaneously, then the air-out direction also can change.
There are various ways of relative movement between the first flow guiding element 120 and the air duct 110, and no specific limitation is made herein. In an embodiment, the first flow guide 120 and the air duct 110 are relatively movable along the axial direction of the air duct 110, that is, at least one of the first flow guide 120 and the air duct 110 is movable along the axial direction of the air duct 110. Of course, the invention is not limited thereto, and in other embodiments, the first flow guiding element 120 and the air duct 110 can also move along a direction forming an included angle with the axial direction of the air duct 110. The first guide member 120 and the air duct 110 are capable of moving relative to each other along the axial direction of the air duct 110.
The first flow guiding element 120 and the air duct 110 can move along the axial direction of the air duct 110, which is specifically as follows:
in one case, the first flow guiding element 120 may move back and forth along the axial direction of the air duct 110, and the air duct 110 is fixed, so that the relative position between the first flow guiding element 120 and the air duct 110 may be changed by moving the first flow guiding element 120, that is, the distance between the first flow guiding element 120 and the air duct 110 is changed, thereby changing the air outlet area of the air outlet duct 130. In the second case, the first flow guiding element 120 and the air duct 110 can move back and forth along the axial direction of the air duct 110, so that the relative position between the first flow guiding element 120 and the air duct 110 can be changed by moving the first flow guiding element 120 and/or the air duct 110, that is, the distance between the first flow guiding element 120 and the air duct 110 is changed, thereby changing the air outlet area of the air outlet duct 130. In a third case, the first flow guiding element 120 is fixed, and the air duct 110 can move back and forth along the axial direction of the air duct 110, so that the relative position between the first flow guiding element 120 and the air duct 110 can be changed by moving the air duct 110, that is, the distance between the first flow guiding element 120 and the air duct 110 is changed, thereby changing the air outlet area of the air outlet duct 130.
In an embodiment of the present invention, the first air guiding member 120 may be mounted on the motor bracket, and specifically, the first air guiding member 120 is mounted on the motor bracket through a fixing bracket. In addition, at least one of the first flow guide 120 and the air duct 110 is movable, wherein the first flow guide 120 and/or the air duct 110 may be moved in a spiral manner, but is not limited thereto.
The air duct structure 100 of the present invention includes an air duct 110 and a first flow guiding member 120, wherein the air duct 110 is cylindrical and has an air inlet 111 and an air outlet 112 opposite to the air inlet 111; the first flow guiding element 120 is disposed at the air outlet 112, an air outlet duct 130 is formed between an outer wall surface of the first flow guiding element 120 and an inner wall surface of the air duct 110, and the first flow guiding element 120 and the air duct 110 can move relatively; thus, when the wind wheel 150 rotates at a certain rotation speed, airflow with a certain direction and magnitude is output, and after flowing into the air duct 110, the airflow flows to the air outlet duct 130 between the first flow guiding element 120 and the air duct 110, and the relative position of the first flow guiding element 120 and the air duct 110 in the axial direction of the air duct 110 can be changed by driving the first flow guiding element 120 and the air duct 110 to move relatively, so as to change the distance between the first flow guiding element 120 and the air duct 110, change the air outlet area of the air outlet duct 130, further change the air outlet speed of the air outlet duct 130, and also change the air outlet angle (air cone angle), that is, change the air outlet direction.
Referring to fig. 3, in order to more effectively change the air outlet area of the air outlet duct 130, the air passing area of the air outlet duct 130 may be reduced along the air outlet direction. Specifically, the generatrix of the first air guide member 120 is inclined toward the middle of the first air guide member 120 in the air outlet direction. Thus, when the first flow guiding element 120 moves towards the direction far away from the air duct 110 along the air outlet direction, the distance between the first flow guiding element 120 and the air duct 110 is reduced, that is, the width of the air outlet end of the air outlet duct 130 is reduced, so the air outlet area of the air outlet duct 130 is reduced, and the air outlet speed is increased. Meanwhile, since the air flow flows along the outer wall surface of the first flow guide member 120, the air outlet angle (air cone angle) changes along with the inclination of the generatrix of the first flow guide member 120 toward the middle of the first flow guide member 120 in the air outlet direction, so that the air outlet direction changes.
Referring to fig. 1 to fig. 3, in an embodiment, the air duct structure 100 further includes a second flow guiding element 140 disposed at the air outlet 112, and the second flow guiding element 140 is disposed in a cylindrical shape tapering in an air outlet direction.
Further, in this embodiment, both ends of the second baffle 140 are open. The second guide 140 is located between the first guide 120 and the air duct 110. Of course, it is understood that the second flow guiding member 140 may also be located inside the first flow guiding member 120, wherein the first flow guiding member 120 is in a cylindrical shape with two open ends.
The number of the second flow guide members 140 is not particularly limited, and for example, the number of the second flow guide members 140 may be one, two or more. In an embodiment, referring to fig. 1, the number of the second flow guiding elements 140 is one, the air outlet duct 130 includes a first sub-duct 131 and a second sub-duct 132, the first sub-duct 131 is formed between an outer wall surface of the second flow guiding element 140 and an inner wall surface of the air duct 110, and the second sub-duct 132 is formed between an outer wall surface of the first flow guiding element 120 and an inner wall surface of the second flow guiding element 140. In this embodiment, the air outlet duct 130 is divided into a first sub-duct 131 and a second sub-duct 132 by a second flow guiding element 140, so that the air flowing into the air duct 110 from the air inlet 111 can be blown out from the first sub-duct 131 and the second sub-duct 132, which can break the air flow and reduce the wind sensation; on the other hand, multilayer air outlet can be realized, and the air outlet range is further enlarged.
In another embodiment, at least two second flow guides 140 are provided, and at least two second flow guides 140 are disposed between the air duct 110 and the first flow guide 120. Specifically, at least two second flow guiding elements 140 are sleeved between the air duct 110 and the first flow guiding element 120. In this embodiment, two adjacent second deflectors 140 are disposed at intervals and form a plurality of sub-air channels, so that the airflow flowing into the air duct 110 from the air inlet 111 can be blown out from the plurality of sub-air channels, and the airflow can be broken up more finely, thereby further reducing the wind sensation; and meanwhile, air outlet of more layers can be realized, and the air outlet range is further enlarged.
Further, the second guide member 140 may move along the axial direction of the air duct 110. When the first flow guiding element 120 moves in the direction away from the air duct 110 along the axial direction of the air duct 110, the distance between the second flow guiding element 140 and the air duct 110 decreases, so that the width of the air outlet end of the first sub-air duct 131 decreases, the air outlet area of the first sub-air duct 131 decreases, the air outlet speed increases, and the air outlet angle changes. When the first air guiding element 120 moves in the direction away from the second air guiding element 140 along the axial direction of the air duct 110, the distance between the first air guiding element 120 and the second air guiding element 140 decreases, so that the width of the air outlet end of the second sub-air duct 132 decreases, the air outlet area of the second sub-air duct 132 decreases, the air outlet speed increases, and the air outlet angle changes.
Of course, in other embodiments, the second flow guiding element 140 may also be fixed, that is, the second flow guiding element 140 is not movable along the axial direction of the air duct 110.
It can be understood that, in order to make the wind sent out through the wind outlet duct 130 more uniform, the wind duct 110, the first flow guiding member 120 and the second flow guiding member 140 may be coaxially disposed.
Referring to fig. 3, the fan assembly includes a wind wheel 150 disposed at the wind inlet 111, an outer diameter of the wind wheel 150 is D, and a diameter Di of the wind inlet 111 is 1.1D to 1.2D.
It should be noted that, if the diameter Di of the air inlet 111 is greater than 1.2D, the airflow generated by the rotation of the wind wheel 150 will flow out from the gap between the wind wheel 150 and the air duct 110, that is, the airflow will flow out from the air inlet 111; if the diameter Di of the air inlet 111 is smaller than 1.1D, it will interfere with the installation of the wind wheel 150, which is inconvenient for the installation of the wind wheel 150.
Referring to fig. 3, the width hi23 of the air inlet end of the first sub-duct 131 is 0-D/2, and the width ho23 of the air outlet end of the first sub-duct 131 is 0-D/2. Similarly, the width hi12 of the air inlet end of the second sub-air duct 132 is 0-D/2, and the width ho12 of the air outlet end of the second sub-air duct 132 is 0-D/2.
In addition, in order to enable the airflow in the air duct 110 to smoothly flow into the first sub-air duct 131 and the second sub-air duct 132, that is, in order to ensure that the width hi23 of the air inlet end of the first sub-air duct 131 and the width hi12 of the air inlet end of the second sub-air duct 132 are both relatively large, an included angle α 1 between a connecting line between the air inlet end and the air outlet end of the bus bar of the first flow guide member 120 and the axis of the air duct 110 may be 6 to 40 °, and an included angle α 2 between a connecting line between the air inlet end and the air outlet end of the bus bar of the second flow guide member 140 and the axis of the air duct 110 is 6 to 40 °.
Here, it should be noted that if an included angle α 1 between a connecting line between the air inlet end and the air outlet end of the first flow guide 120 bus bar and the axis of the air duct 110 is greater than 40 °, the width hi12 of the air inlet end of the second sub-duct 132 is too small to facilitate the airflow flowing into the second sub-duct 132; similarly, if an included angle α 2 between a connecting line between the air inlet end and the air outlet end of the second flow guide element 140 bus bar and the axis of the air duct 110 is greater than 40 °, the width hi23 of the air inlet end of the first sub-air duct 131 is too small, which is not favorable for the airflow to flow into the first sub-air duct 131.
If the included angle α 1 between the connection line between the air inlet end and the air outlet end of the first flow guide member 120 bus and the axis of the air duct 110 is smaller than 6 °, the first flow guide member 120 is approximately in a straight cylinder shape, and when the first flow guide moves along the axial direction of the air duct 110, the distance between the first flow guide member 120 and the second flow guide member 140 changes less, that is, the width ho12 of the air outlet end of the second sub-air duct 132 is smaller, which is not beneficial to air outlet; similarly, if the included angle α 2 between the connection line between the air inlet end and the air outlet end of the second flow guide member 140 bus and the axis of the air duct 110 is smaller than 6 °, the second flow guide member 140 is approximately in the shape of a straight cylinder, and when the second flow guide moves along the axial direction of the air duct 110, the distance between the second flow guide member 140 and the air duct 110 changes less, that is, the width ho23 of the air outlet end of the first sub-air duct 131 is smaller, which is not beneficial to air outlet.
Further, an included angle β 1 between a tangent line of a point on a bus of the first flow guide member 120 and an axis of the air duct 110 is 0 to 60 °, and an included angle β 2 between a tangent line of a point on a bus of the second flow guide member 140 and an axis of the air duct 110 is 0 to 60 °.
It should be noted that the airflow may flow along the wall surface of the first flow guiding element 120 or the second flow guiding element 140, and if an included angle β 1 between a tangent line of a point on a generatrix of the first flow guiding element 120 and the axis of the air duct 110 is greater than 60 °, when the airflow flows along the wall surface of the first flow guiding element 120, the airflow may be blown out toward the peripheral side of the air duct structure 100, so that there is no air outlet flow right in front of the air duct structure 100. Similarly, if an included angle β 2 between a tangent line of a point on a generatrix of the second flow guide element 140 and the axis of the air duct 110 is greater than 60 °, when the airflow flows along the wall surface of the second flow guide element 140, the airflow is blown out toward the peripheral side of the air duct structure 100, so that there is no air flow directly in front of the air duct structure 100.
For the same reason, an included angle β 3 between a tangent line of a point on a generatrix of the air duct 110 and an axis of the air duct 110 is 0 ° to 60 °.
The present invention further provides an air processing apparatus, which includes an air duct structure 100, and the specific structure of the air duct structure 100 refers to the above embodiments, and since the air processing apparatus adopts all technical solutions of all the above embodiments, at least all beneficial effects brought by the technical solutions of the above embodiments are achieved, and are not described in detail herein. Wherein, the air treatment device can be any one of an electric fan, an air conditioner, a humidifier and an air purifier.
The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (16)
1. An air duct structure, comprising:
the air duct is cylindrical and is provided with an air inlet and an air outlet opposite to the air inlet; and
the first flow guide piece is arranged at the air outlet, an air outlet duct is formed between the outer wall surface of the first flow guide piece and the inner wall surface of the air duct, and the first flow guide piece and the air duct can move relatively;
the bus of the first flow guide piece inclines towards the middle of the first flow guide piece in the air outlet direction;
the first flow guide piece can be contained in the air duct, and an included angle beta between a tangent line of an upper point of a bus of the first flow guide piece and the axis of the air duct1Is 0-60 degrees, and the included angle beta between the tangent line of the generatrix upper point of the air duct and the axis of the air duct3Is 0 to 60 degrees.
2. The air duct structure according to claim 1, wherein at least one of the first flow guide member and the air duct is movable in an axial direction of the air duct.
3. The air duct structure according to claim 2, further comprising a second flow guiding member disposed at the air outlet, wherein the second flow guiding member is disposed in a cylindrical shape that is tapered in an air outlet direction.
4. The air duct structure according to claim 3, wherein the second flow guide member is open at both ends.
5. The air duct structure according to claim 4, wherein the second flow guide is located between the first flow guide and the air duct.
6. The air duct structure according to claim 5, wherein the number of the second flow guiding members is at least two, and at least two of the second flow guiding members are sleeved between the air duct and the first flow guiding member.
7. The air duct structure according to claim 5, wherein the second flow guide member is one, the air outlet duct includes a first sub-duct and a second sub-duct, the first sub-duct is formed between an outer wall surface of the second flow guide member and an inner wall surface of the air duct, and the second sub-duct is formed between an outer wall surface of the first flow guide member and an inner wall surface of the second flow guide member.
8. The air duct structure according to claim 7, characterized in that the air duct structure further comprises a wind wheel arranged at the air inlet, the outer diameter of the wind wheel is D, and the diameter of the air inlet is 1.1D-1.2D.
9. The air duct structure according to claim 8, wherein the width of the air inlet end or the air outlet end of the first sub-air duct is 0-D/2, and the width of the air inlet end or the air outlet end of the second sub-air duct is 0-D/2.
10. The air duct structure according to claim 3, wherein an included angle α between a connecting line between the air inlet end and the air outlet end of the first flow guide member bus and the axis of the air duct1Is 6-40 degrees, and the included angle alpha between the connecting line between the air inlet end and the air outlet end of the second diversion part bus and the air duct axis2Is 6 to 40 degrees.
11. An air duct structure as claimed in claim 3, wherein the included angle β between the tangent of the point on the generatrix of the second flow guide member and the axis of the air duct2Is 0 to 60 degrees.
12. The air duct structure according to claim 3, wherein the second flow guide member is movable in an axial direction of the air duct.
13. The air duct structure according to claim 3, wherein the air duct, the first flow guide member and the second flow guide member are coaxially disposed.
14. The air duct structure according to any one of claims 1 to 13, wherein the first flow guide member is a truncated cone structure.
15. The air duct structure according to any one of claims 1 to 13, wherein the air duct is tapered along the air outlet direction.
16. An air treatment unit comprising an air duct structure according to any one of claims 1 to 15.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732135.XA CN112343865B (en) | 2019-08-09 | 2019-08-09 | Air duct structure and air treatment device |
| PCT/CN2020/071652 WO2021027255A1 (en) | 2019-08-09 | 2020-01-13 | Air duct structure and air treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910732135.XA CN112343865B (en) | 2019-08-09 | 2019-08-09 | Air duct structure and air treatment device |
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| Publication Number | Publication Date |
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| CN112343865A CN112343865A (en) | 2021-02-09 |
| CN112343865B true CN112343865B (en) | 2022-03-01 |
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| CN201910732135.XA Active CN112343865B (en) | 2019-08-09 | 2019-08-09 | Air duct structure and air treatment device |
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| Country | Link |
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| CN (1) | CN112343865B (en) |
| WO (1) | WO2021027255A1 (en) |
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| CN114183390A (en) * | 2021-09-23 | 2022-03-15 | 浙江沈力防爆机电有限公司 | Compression-resistant rainproof roof fan |
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| WO2021027255A1 (en) | 2021-02-18 |
| CN112343865A (en) | 2021-02-09 |
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