CN114294266A - Air guide structure and air outlet device - Google Patents
Air guide structure and air outlet device Download PDFInfo
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- CN114294266A CN114294266A CN202111683216.9A CN202111683216A CN114294266A CN 114294266 A CN114294266 A CN 114294266A CN 202111683216 A CN202111683216 A CN 202111683216A CN 114294266 A CN114294266 A CN 114294266A
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Abstract
The invention discloses an air guide structure and an air outlet device, wherein the air guide structure comprises a shell and a spiral guide vane structure; the shell is provided with an air outlet; the spiral guide vane structure comprises a spiral guide vane which extends spirally along a first direction, and the spiral guide vane can be rotatably arranged at the air outlet along an axis extending along the first direction; that is, when the air flow is blown out from the air outlet, pressure difference is formed on two sides of the spiral guide vane, so that the spiral guide vane is driven to rotate, the structure is simple, and the cost is low; meanwhile, the air outlet forms spiral airflow through the rotation of the spiral guide vane, so that a spiral air supply mode is realized, the air supply direction can be changed, the problems of vertical air supply and strong and hard air blowing sense in the prior art are solved, and the use comfort of a user is improved; moreover, the spiral guide vane can reduce the air-out resistance to promote the wind speed of air outlet, and then reduce motor speed and power, solve motor cost and temperature rise problem.
Description
Technical Field
The invention relates to the technical field of air outlet devices, in particular to an air guide structure and an air outlet device.
Background
The existing air outlet device has various types, taking a tower fan product as an example, and the existing tower fan is taken as a fan electric appliance and is popular in the market due to the advantages of small volume, capability of supplying air up and down, low noise and the like. The air guide plate structure is designed in an air outlet grid of an existing tower fan, airflow is restricted through a flow channel between air guide plates to form a vertical jet flow field, airflow at a fan outlet of the tower fan is blown to the face of a user vertically, blowing feeling is strong, and the problem of blowing discomfort occurs in the using process of the user.
Disclosure of Invention
The invention mainly provides a wind guide structure and a wind outlet device, and aims to solve the problem that the comfort of a user is reduced due to the fact that the existing wind guide structure vertically exhausts wind and is strong and hard in blowing sense.
The invention mainly aims to provide an air guide structure, which comprises:
a housing formed with an air outlet; and the number of the first and second groups,
the spiral guide vane structure comprises a spiral guide vane spirally extending along a first direction, and the spiral guide vane can be installed at the air outlet in a rotating mode along the axis extending along the first direction.
Optionally, the helical guide vane structure further comprises a rotating shaft, and the rotating shaft is rotatably mounted at the air outlet along the first direction;
wherein, the spiral stator is followed the axis spiral of pivot is around locating week side of pivot.
Optionally, a bearing is disposed between at least one end of the rotating shaft and the housing.
Optionally, the spiral stator sets up a plurality ofly, and is a plurality of spiral stator interval is arranged in week side of pivot, and adjacent two the center contained angle that the spiral stator corresponds is alpha, and alpha 360/N, wherein, the quantity of spiral stator is N, and N ≧ 2.
Optionally, two spiral guide vanes are arranged on the periphery of the rotating shaft at intervals, and an air outlet flow channel is formed between the two spiral guide vanes;
the spiral guide vane structure sets up two at least the air-out runner is close to each other along the air-out direction to form the shrink runner, so that air guide structure has air supply mode placed in the middle, two the air-out runner is kept away from each other along the air-out direction, so that form the expansion runner, so that air guide structure has the dispersion air supply mode.
Optionally, the helical guide vane structure is provided in plurality, and the helical guide vane structures are arranged at intervals in the second direction.
The invention also provides an air outlet device, which comprises an air guide structure, wherein the air guide structure comprises:
a housing formed with an air outlet; and the number of the first and second groups,
the spiral guide vane structure comprises a spiral guide vane spirally extending along a first direction, and the spiral guide vane can rotate along an axis extending along the first direction and is installed at the air outlet so that a spiral airflow is formed at the air outlet.
Optionally, an air inlet and an airflow channel between the air inlet and the air outlet are further formed in the housing, and a wind wheel is arranged in the airflow channel to guide airflow to be guided in from the air inlet and blown out from the air outlet.
Optionally, the wind wheel includes a cross-flow wind wheel, and the cross-flow wind wheel is disposed along the first direction and is installed in the airflow channel along an axial direction thereof.
Optionally, the rotational axis of the wind wheel extends outside the airflow channel to form a connection;
the air outlet device further comprises a driving motor, and the driving motor is in driving connection with the connecting portion.
Optionally, the air outlet device includes one of a tower fan, a warm air fan and an air conditioner.
In the technical scheme of the invention, the spiral guide vane is rotatably arranged at the air outlet of the shell along the axis extending in the first direction, and when air flow is blown out from the air outlet, pressure difference is formed on two sides of the spiral guide vane, so that the spiral guide vane is driven to rotate, a driving mechanism is prevented from being added, the structure of the air guide structure is simplified, and the cost is reduced; meanwhile, the spiral air flow can be formed at the air outlet through the rotation of the spiral guide vane, so that a spiral air supply mode is realized, the air supply direction can be changed, the problems of vertical air supply and strong and hard air blowing sense in the prior art are solved, and the use comfort of a user is improved; moreover, the spiral guide vane can reduce the air-out resistance, thereby promoting the wind speed of the air outlet, further reducing the rotating speed and the power of the motor, and solving the problems of motor cost and temperature rise.
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 plan view of an air guiding structure according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the helical vane of FIG. 1;
FIG. 3 is a schematic view of the flow direction (vertical supply) of the air flow during operation of the helical vanes of FIG. 1;
FIG. 4 is a schematic view of the flow direction (center feed) of the air stream during operation of the helical vanes of FIG. 1;
FIG. 5 is a schematic view of the flow direction (split supply) of the air flow during operation of the helical vanes of FIG. 1;
fig. 6 is a schematic structural diagram of an embodiment of an air supply device provided in the present invention.
The embodiment of the invention is illustrated by reference numerals:
reference numerals | Name (R) | Reference numerals | Name (R) |
1000 | |
21 | Spiral guide vane |
100 | |
22 | |
1 | |
200 | |
11 | |
300 | |
12 | |
400 | |
2 | Spiral guide vane structure |
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
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
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, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The existing air outlet device has various types, taking a tower fan product as an example, and the existing tower fan is taken as a fan electric appliance and is popular in the market due to the advantages of small volume, capability of supplying air up and down, low noise and the like. The air guide plate structure is designed in an air outlet grid of an existing tower fan, airflow is restricted through a flow channel between air guide plates to form a vertical jet flow field, airflow at a fan outlet of the tower fan is blown to the face of a user vertically, blowing feeling is strong, and the problem of blowing discomfort occurs in the using process of the user.
In view of this, the present invention provides an air guiding structure and an air supply device. Fig. 1 to 5 are specific embodiments of an air guiding structure provided in the present invention; fig. 6 is a specific embodiment of the air blowing device provided by the present invention.
Referring to fig. 1 to 3, the air guiding structure 100 includes a housing 1 and a spiral guide vane structure 2, wherein an air outlet 11 is formed in the housing 1; the spiral guide vane structure 2 comprises a spiral guide vane 21 extending spirally along a first direction F1, and the spiral guide vane 21 is rotatably mounted at the air outlet 11 along an axis extending in the first direction F1, so as to form a spiral air flow at the air outlet 11.
In the technical scheme of the present invention, the spiral guide vane 21 is rotatably mounted at the air outlet 11 of the housing 1 along the axis extending in the first direction F1, and when the air flow is blown out from the air outlet 11, a pressure difference is formed at two sides of the spiral guide vane 21, so as to drive the spiral guide vane 21 to rotate, thereby avoiding an increase in a driving mechanism, simplifying the structure of the air guide structure 100, and reducing the cost; meanwhile, the spiral guide vane 21 rotates to enable spiral airflow to be formed at the air outlet 11, so that a spiral air supply mode is realized, the air supply direction can be changed, the problems of vertical air supply and strong and hard air blowing sense in the prior art are solved, and the use comfort of a user is improved; furthermore, the spiral guide vane 21 can reduce the air-out resistance, thereby promoting the wind speed of the air outlet 11, further reducing the rotating speed and power of the motor, and solving the problems of motor cost and temperature rise.
Specifically, the helical vane structure 2 further includes a rotating shaft 22, and the rotating shaft 22 is rotatably installed at the air outlet 11 along the first direction F1; the spiral guide vane 21 is spirally wound around the periphery of the rotating shaft 22 along the axis of the rotating shaft 22; the spiral guide vane 21 piece passes through the pivot 22 rotate install in air outlet 11 department not only makes spiral guide vane 21's installation is more firm, can also make spiral guide vane 21's rotation is more smooth and easy.
More specifically, a bearing is arranged between at least one end of the rotating shaft 22 and the housing 1; through setting up the bearing can not only improve the stability of pivot 22 can also reduce pivot 22 with frictional force between the casing 1 avoids the condition of wearing and tearing appears in pivot 22, thereby improves pivot 22's life.
The specific number of the spiral guide vanes 21 is not limited, specifically, in this example, a plurality of spiral guide vanes 21 are provided, the plurality of spiral guide vanes 21 are arranged at intervals on the peripheral side of the rotating shaft 22, and the central included angle corresponding to two adjacent spiral guide vanes 21 is α, and α is 360 °/N, where the number of the spiral guide vanes 21 is N, and N is ≧ 2; through one set up a plurality ofly on the pivot 22 spiral stator 21, and a plurality of the even interval of spiral stator 21 sets up, makes each spiral stator 21 atress is even, and then makes pivot 22 can stably drive a plurality of spiral stator 21 rotates, further improves spiral stator structure 2's stability.
More specifically, in this embodiment, spiral guide vane 21 sets up two, two spiral guide vane 21 interval is laid in the week side of pivot 22, and the central contained angle that both correspond is 180, promptly, two spiral guide vane 21's phase difference is 180, and is the air current certainly when the air outlet 11 flows out, two spiral guide vane 21 opposite each other's both sides form pressure differential, with this drive pivot 22 drives spiral guide vane 21 rotates, realizes the spiral air supply.
It should be noted that, in the present embodiment, the three-dimensional curve of the helical guide vane 21 is a conventional curve, that is, the helical guide vane 21 is generated along a spatial spline curve, wherein the curve is obtained by the formula: x is a cost, y is a sint, and z is T; wherein the amplitude a is 0.01H, the period T is 0.02H, and T is 0 to H, where H is the length of the helical vane 21 in the first direction F1; in this way, the model generation step and the machining process of the helical guide vane 21 are simplified.
Referring to fig. 4 to 5, two spiral guide vanes 21 are disposed, the two spiral guide vanes 21 are disposed on the peripheral side of the rotating shaft 22 at intervals, and an air outlet is formed between the two spiral guide vanes 21; the spiral guide vane structure 2 is provided with at least two air outlets, the two air outlets discharge air in opposite directions, so that the air guide structure 100 has a centered air supply mode, and the two air outlets discharge air in opposite directions, so that the air guide structure 100 has a dispersed air supply mode; that is, in this embodiment, the spiral guide vane structures 2 are at least two, and when the air outlets on two adjacent spiral guide vane structures 2 are opposite to each other, please refer to fig. 4, the air flow is blown out from the middle of the air outlet 11 to form the centered air supply mode; when the air outlets of two adjacent spiral guide vane structures 2 are opposite to each other, please refer to fig. 5, the airflow is diffused and blown out from the air outlet 11 to form the distributed air supply mode; thus, the air supply direction can be periodically changed along with the rotation of the rotating shaft 22, and the experience degree of the user is further improved.
In the present invention, the length direction of the outlet 11 is the first direction F1, and correspondingly, the width direction of the outlet 11 is the second direction F2.
The specific number of the spiral guide vane structures 2 is not limited, and in some embodiments, one spiral guide vane structure 2 may be provided; in the present embodiment, the helical guide vane structures 2 are provided in plurality, and the helical guide vane structures 2 are arranged at intervals in the second direction F2; through setting up a plurality ofly spiral stator structure 2 for the air current is in flow through the air outlet 11 forms spiral air current more easily, improves the effect of spiral air supply.
Specifically, in the embodiment, the number of the helical guide vane structures 2 is n, and n is greater than or equal to 2 and less than or equal to 4; in consideration of actual application scenes and actual production product specifications, the more the spiral guide vane structures 2 are arranged, the better the spiral air supply effect is, but the more the spiral guide vane structures 2 are arranged, the larger the size of the shell 1 is, so that the size of the air supply structure can be greatly increased, and further the size and the production cost of an actual product are increased, therefore, n is more than or equal to 2 and less than or equal to 4, and the spiral air supply effect is enhanced to the maximum extent on the premise of not changing the original structure and specifications of the existing actual product.
It should be noted that, taking a tower fan as an example, the aerodynamic performance and noise of the whole tower fan adopting the helical guide vane structure 2 are tested according to national standards, and the test results are shown in table 1. Under the same rotating speed, the outlet wind speed of the existing tower fan is 6.5m/s, the noise sound power is 58.3dB, the outlet wind speed of the tower fan adopting the spiral guide vane structure 2 reaches 7.1m/s, and the noise sound power is 57.5dB, namely, the wind speed of the air outlet of the tower fan is improved by 9% by the spiral guide vane structure 2, and the noise is reduced by 0.8 dB; so, can not only realize the air supply of big amount of wind, still reduce the noise, further promote user experience.
Further, in the case of the same outlet wind speed, for example, setting the outlet wind speed to 6.5m/s, the rotation speed of the driving motor of the tower fan employing the helical guide vane structure 2 can be reduced by 105 rpm; because air outlet department sets up spiral stator structure 2, spiral stator 21 can rotate by oneself under the effect of the pressure difference that the air current produced for the driving motor of tower fan need not right spiral stator 21 does work, consequently can effectively reduce motor power, solve the temperature rise problem.
The present invention further provides an air outlet device 1000, where the air outlet device 1000 includes an air guiding structure, and the air guiding structure is configured as the air guiding structure 100, that is, the air outlet device 1000 includes all technical features in all embodiments of the air guiding structure 100, and thus all beneficial effects brought by all embodiments are also provided, and are not repeated herein.
Specifically, referring to fig. 6, an air inlet 12 and an airflow channel between the air inlet 12 and the air outlet 11 are further formed on the housing 1, and a wind wheel 200 is disposed in the airflow channel to guide airflow to be introduced from the air inlet 12 and blown out from the air outlet 11; through be in the air current runner sets up wind wheel 200, when wind wheel 200 does work to gas, guide the air current certainly import in 12 department, and certainly when air outlet 11 blows off, can drive the rotation of the spiral stator 21 in exit with this air outlet 11 goes out and forms spiral air current, in order to realize the spiral air supply.
Specifically, the wind wheel 200 comprises a cross-flow wind wheel which is arranged along the first direction F1 and is rotatably mounted in the airflow channel along the axial direction of the cross-flow wind wheel; it should be noted that the cross-flow wind wheel is also called a cross-flow wind wheel 200, and an impeller thereof is multi-blade type and long cylindrical shape and has forward multi-wing shaped blades. When the impeller rotates, airflow enters the blade grids from the opening position of the impeller, passes through the inside of the impeller and is discharged into the volute from the blade grids on the other surface to form working airflow; the axial length of the cross-flow wind wheel is not limited, and the length of the impeller can be selected randomly according to different use requirements; because the sizes of the air outlets 11 of the air outlet devices 1000 with different specifications are different, and the cross-flow wind wheel can select a proper impeller according to the length of the air outlet 11, the practicability of the wind wheel 200 is improved; meanwhile, when the airflow passes through the impeller and flows, the airflow is acted by the blades twice, so that the airflow can reach a far distance, the air supply distance of the air outlet device 1000 is far, and the air outlet device can adapt to various application environments; moreover, the cross-flow wind wheel has no turbulent flow, the air outlet is uniform, the air supply stability of the air outlet device 1000 is further improved, and the user experience degree is further improved.
In this embodiment, the rotation axis of the wind wheel 200 extends out of the airflow passage to form a connection portion; the air outlet device 1000 further comprises a driving motor 300, and the driving motor 300 is in driving connection with the connecting part; the driving motor 300 drives the wind wheel 200 to rotate so as to apply work to the air and guide the air flow to be led in from the air inlet 12 and drive the spiral guide vane 21 at the outlet to rotate when the air is blown out from the air outlet 11, so that the spiral air flow is formed at the air outlet 11 to realize spiral air supply.
Specifically, the wind wheel 200 includes a cross-flow wind wheel including a cross-flow rotating shaft and an impeller including two hubs and a plurality of blades; the through-flow rotating shaft is arranged along the first direction F1 and is rotatably arranged in the airflow channel along the axis of the through-flow rotating shaft; the two hubs are arranged on the through-flow rotating shaft and are arranged at intervals in the first direction F1; a plurality of the blades extend along the first direction F1 and are arranged between the two hubs, and the plurality of the blades are arranged at intervals along the axial direction of the hubs; wherein the connecting portion includes the through-flow rotating shaft; the driving motor 300 is in driving connection with the through-flow rotating shaft; when the air-out device 1000 runs through the impeller, the air flow is acted by the blade twice, so that the air flow can reach a far distance, the air-out device 1000 is far in air supply distance, and the air-out device can adapt to various application environments.
Specifically, a flow guiding structure 400 is further disposed in the airflow channel, and through the arrangement of the flow guiding structure 400, airflow can smoothly flow from the air inlet 12 to the air outlet 11.
More specifically, in the present embodiment, the airflow passage has a first inner wall and a second inner wall that are oppositely disposed in the second direction F2, wherein:
in the present invention, the flow guiding structure 400 includes a first arc-shaped flow guiding portion formed on the first inner wall and at least located at the position of the air outlet 11, and the first arc-shaped flow guiding portion is used for guiding the airflow at the air outlet 11; through setting up arc water conservancy diversion portion for the air current blows off more easily from air outlet 11.
In the present invention, the flow guiding structure 400 includes a flow blocking portion formed on the second inner wall and at the position of the air outlet 11, and the flow blocking portion is used for preventing the airflow at the air outlet 11 from flowing back; it should be noted that, in some air outlet devices 1000 with smaller volume, due to the limitation of the original structure of the product, the distance between the air inlet 12 and the air outlet 11 is very short, that is, the airflow channel is short, and during the operation process, the airflow at the air outlet 11 is easily brought back to the airflow channel by the wind wheel 200, thereby reducing the air volume of the air outlet 11; and the air flow is prevented from flowing back by arranging the flow resisting part at the air outlet 11, so that the air quantity discharged from the air outlet 11 is increased.
It should be noted that the two technical features may be alternatively or simultaneously provided, specifically, in this embodiment, the flow guiding structure 400 includes a first arc-shaped flow guiding portion and a flow blocking portion, the first arc-shaped flow guiding portion is disposed on the first inner wall and at least located at the position of the air outlet 11, and the flow blocking portion is disposed on the second inner wall and at the position of the air outlet 11; the airflow can be more easily blown out from the air outlet 11 through the arc-shaped flow guide part; and the flow choking part prevents the airflow from flowing back, so that the air quantity discharged from the air outlet 11 is greatly improved.
Specifically, in this embodiment, a second arc-shaped flow guiding portion is further formed on the first inner wall, and the second arc-shaped flow guiding portion is in smooth transition connection with the first arc-shaped flow guiding portion; at least part of the second arc-shaped flow guide part is matched with the shape of the outer side wall of the cross-flow wind wheel; by providing the second arc-shaped flow guiding portion, the airflow formed at the air inlet 12 can more easily flow into the airflow channel.
Specifically, in the rotation direction of the cross-flow wind wheel, the flow blocking part comprises a protrusion which is arranged on the second inner wall and protrudes towards the cross-flow wind wheel; through setting up the arch can the interception certainly the air current of air outlet 11 department backward flow has increased the amount of wind that the air outlet 11 goes out.
The specific form of the air outlet device 1000 is not limited in the present invention, and may be a tower fan, a heating fan, or an air conditioner, that is, all devices having an air supply function are within the scope of the present invention.
The above description is only a preferred embodiment of the present invention, and is 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 (11)
1. An air guide structure, comprising:
a housing formed with an air outlet; and the number of the first and second groups,
the spiral guide vane structure comprises a spiral guide vane spirally extending along a first direction, and the spiral guide vane can be installed at the air outlet in a rotating mode along the axis extending along the first direction.
2. The air guide structure according to claim 1, wherein the helical guide vane structure further comprises a rotating shaft, and the rotating shaft is rotatably mounted at the air outlet along the first direction;
wherein, the spiral stator is followed the axis spiral of pivot is around locating week side of pivot.
3. The air guide structure according to claim 2, wherein a bearing is provided between at least one end of the rotating shaft and the casing.
4. The air guide structure according to claim 2, wherein a plurality of spiral guide vanes are arranged on the periphery of the rotating shaft at intervals, and a central included angle corresponding to two adjacent spiral guide vanes is α, and α is 360 °/N, where the number of spiral guide vanes is N, and N is ≧ 2.
5. The air guide structure according to claim 2, wherein two spiral guide vanes are provided, the two spiral guide vanes are arranged on the peripheral side of the rotating shaft at intervals, and an air outlet flow passage is formed between the two spiral guide vanes;
the spiral guide vane structure sets up two at least the air-out runner is close to each other along the air-out direction to form the shrink runner, so that air guide structure has air supply mode placed in the middle, two the air-out runner is kept away from each other along the air-out direction, so that form the expansion runner, so that air guide structure has the dispersion air supply mode.
6. The air guide structure according to claim 1, wherein the number of the spiral guide vane structures is plural, and the plural spiral guide vane structures are arranged at intervals in the second direction.
7. An air outlet device, characterized by comprising the air guide structure of any one of claims 1 to 6.
8. The air outlet device of claim 7, wherein the housing further has an air inlet and an airflow channel between the air inlet and the air outlet, and a wind wheel is disposed in the airflow channel to guide the airflow to be introduced from the air inlet and blown out from the air outlet.
9. The air outlet device of claim 8, wherein the wind wheel comprises a cross-flow wind wheel, and the cross-flow wind wheel is arranged along the first direction and is installed in the airflow channel along the axial direction of the cross-flow wind wheel.
10. The air outlet device of claim 8, wherein the rotating shaft of the wind wheel extends out of the airflow channel to form a connecting part;
the air outlet device further comprises a driving motor, and the driving motor is in driving connection with the connecting portion.
11. The air outlet device of claim 7, wherein the air outlet device comprises one of a tower fan, a warm air fan and an air conditioner.
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