CN114541112A - Air duct structure and clothes dryer - Google Patents
Air duct structure and clothes dryer Download PDFInfo
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- CN114541112A CN114541112A CN202011297983.1A CN202011297983A CN114541112A CN 114541112 A CN114541112 A CN 114541112A CN 202011297983 A CN202011297983 A CN 202011297983A CN 114541112 A CN114541112 A CN 114541112A
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- 238000010438 heat treatment Methods 0.000 claims description 82
- 238000001914 filtration Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 abstract description 31
- 230000000694 effects Effects 0.000 abstract description 13
- 230000009286 beneficial effect Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000013021 overheating Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
- D06F58/00—Domestic laundry dryers
- D06F58/20—General details of domestic laundry dryers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Detail Structures Of Washing Machines And Dryers (AREA)
Abstract
The invention provides an air duct structure which comprises a volute, wherein a fan and an air outlet for exhausting air flow are arranged in the volute, an air guide channel extending towards the outside of the volute is arranged at the air outlet, and the air guide channel is an air flow channel gradually narrowing from two ends to the middle part. The air flow discharged from the volute can be uniformly dispersed through the arrangement of the air guide channel, and further, the air flow discharged from the air channel structure is more uniform. The invention also provides a clothes dryer, the air channel structure is arranged in the clothes dryer, the roller is also arranged in the clothes dryer, and the motor for driving the roller and the fan in the air channel structure to rotate forwards and backwards is arranged in the clothes dryer. The clothes dryer provided by the invention can utilize one motor to simultaneously drive the roller and the fan to realize forward and reverse rotation, thereby saving the cost and the space. The arrangement of the air duct structure in the clothes dryer can ensure that the air duct structure can discharge even and dispersed air flow under the condition of forward and reverse rotation, thereby achieving good drying effect on objects.
Description
Technical Field
The invention relates to the field of drying household appliances, in particular to an air duct structure and a clothes dryer.
Background
The more common structure in present wind channel structure is for setting up the spiral case of embedded fan, utilizes the profile realization of spiral case to blow off the water conservancy diversion effect of air current to the fan, finally makes the air current that the fan blew off send out by the air outlet department of spiral case. However, the shape and structure of the volute generally causes the finally sent air flow to be deviated to one side, namely, the air flow is more concentrated on the same side, and the air flow distribution is not uniform. At present, a volute structure is also often used for guiding wind in a drying air duct structure, so that the sent air flow is deviated to one side, uneven drying of objects can be caused, and even partial drying objects can be burnt out under extreme conditions.
The existing Chinese invention patent provides a clothes dryer, a fan is arranged in the clothes dryer, the fan comprises a volute and a fan, an inner cavity of the volute is of a symmetrical structure, the fan is positioned in the inner cavity of the volute, the center of the fan is arranged on a symmetrical axis of the inner cavity of the volute, a flow guide device is arranged on one side of the fan, facing an air outlet of the volute, a gap is formed between the flow guide device and the periphery of the fan, the flow guide device is of a symmetrical structure, and the center of the flow guide device is arranged on the symmetrical axis of the inner cavity of the volute. The main airflow generated by the fan flows to the heating device along one side of the flow guide device and the wall of the opposite side of the volute casing through the flow guide device, the main airflow covers most of the area or all of the heating device, less airflow turns back to flow towards the direction of the fan after touching the other side wall of the volute casing, and the airflow is guided by the other side wall of the volute casing and the flow guide device to be added into the rotation of the fan again, so that concentrated backflow cannot be generated between the fan and the outlet of the volute casing. The utilization efficiency of the heating device is improved. However, in the patent, the air flow at the air outlet of the volute is obviously deviated to one side, so that the air outlet is not uniform.
In summary, there is a need for an air duct structure capable of outputting warm air uniformly while guiding air by using a volute.
The present invention has been made in view of the above problems.
Disclosure of Invention
The invention aims to provide an air duct structure which can achieve the effect of uniformly conveying airflow.
The invention provides an air duct structure which comprises a volute, wherein a fan and an air outlet for exhausting air flow are arranged in the volute, an air guide channel extending towards the outside of the volute is arranged at the air outlet, and the air guide channel is an air flow channel gradually narrowing from two ends to the middle part. The air flow discharged from the volute can be uniformly dispersed through the arrangement of the air guide channel, and further, the air flow discharged from the air channel structure is more uniform. When the air duct structure is used for drying the objects, the objects to be dried are uniformly dried, so that the drying effect is better.
Furthermore, the air guide channel extends along the axial direction of the air outlet, an air inlet and an air outlet are respectively arranged at the two ends of the extending direction, and the air inlet is connected with the air outlet; the wind-guiding passageway is narrowed gradually, is formed first horn mouth type structure by air inlet department to the middle part, and the wind-guiding passageway is narrowed gradually, is formed second horn mouth type structure by air outlet department to the middle part, and first horn mouth type structure links to each other at the middle part of wind-guiding passageway with second horn mouth type structure. And the structural shape of wind-guiding passageway sets up rationally, and first horn mouth type structure is convenient for guide the discharge air current of spiral case exhaust to the wind-guiding passageway in, and the structure of second horn mouth type is convenient for evenly, the discharge of dispersing the air current in the wind-guiding passageway, utilizes the object of need drying evenly to dry.
Further, the first bell-mouth-shaped structure comprises a first conical section near the air inlet, and the slope of the side wall of the first conical section forming the cone is a fixed value; the first conical section is connected with a second conical section extending to the middle part of the wind guide channel, the slope of the side wall of the second conical section forming the cone is a fixed value, and the slope is reduced relative to the first conical section; the second bell-mouth-shaped structure comprises a third conical section near the air outlet, and the slope of the side wall of the third conical section forming the cone is a fixed value; the third conical section is connected with a fourth conical section extending towards the middle part of the air guide channel, the slope of the side wall of the fourth conical section forming the cone is a fixed value, and the slope is reduced relative to the third conical section; the second conical section is connected with the fourth conical section; preferably, circular arc filtering is arranged at the position where the conical sections with different slopes in the air guide channel are connected. The structure of each conic section in the air guide channel is reasonably arranged, so that the air flow is conveniently guided.
Furthermore, the air guide channel is enclosed by two air guide side plates which are respectively positioned at two circumferential sides close to the air outlet of the volute, and the two air guide side plates are symmetrically arranged along the axis of the air guide channel; preferably, the top end surface of the air guide side plate in the vertical direction and the top wall of the air outlet of the volute casing in the vertical direction are located on the same plane, and the bottom end surface of the air guide side plate in the vertical direction and the bottom wall of the air outlet of the volute casing in the vertical direction are located on the same plane. The air guide channel can be formed by only two air guide side plates in a surrounding mode, so that materials are saved, and the structure is simplified.
Furthermore, part of the structure at the air inlet of the air guide channel is embedded in the air outlet of the volute; preferably, the top end surface of the air guide side plate in the vertical direction abuts against the top wall of the volute in the vertical direction at the air outlet, and the bottom end surface of the air guide side plate in the vertical direction abuts against the bottom wall of the volute in the vertical direction at the air outlet. The air guide side plate can form an air guide channel together with the top wall and the bottom wall of the volute in the vertical direction, so that the air guide channel is simple in structure and more beneficial to collecting air flow.
As an embodiment, the present invention further provides that a heating device is disposed in the air duct structure, and an air outlet of the air guiding channel at least extends to a position close to the heating device; preferably, part of the structure of the heating device is embedded in the air outlet of the air guide channel. Through the cooperation setting of wind-guiding passageway and heating device for usable wind-guiding passageway is to the even exhaust air current on the heating device, makes each department even heating on the heating device, and then makes the high temperature stoving air current of evenly arranging of formation.
Furthermore, the air outlet of the air guide channel is arranged right opposite to the heating device, and the middle part of the heating device is at least opposite to the air outlet of the air guide channel; two horizontal side walls perpendicular to the axial direction at the air outlet of the air guide channel respectively extend to two sides of the middle part of the heating device; preferably, the central axis of the air guide channel is arranged opposite to the central axis of the heating device. The air guide channel and the heating device are structurally arranged, so that discharged air flow in the air guide channel is easily and uniformly distributed on the heating device, and the heating device is further uniformly heated to form uniform high-temperature drying air flow.
Furthermore, a straight blade fan which can rotate forwards and backwards is arranged in the volute, and the interior of the volute is of a structure without a volute tongue. Through the arrangement of the straight-blade fan and the volute structure without the volute tongue, the air channel structure can discharge the same amount of airflow under the condition that the fan rotates forwards and backwards.
Furthermore, the air duct structure comprises a volute and a straight blade fan embedded in the volute, wherein an air guide channel extending from an air outlet to the heating device is arranged at the air outlet of the volute; the volute, the straight-blade fan, the air guide channel and the heating device are all in an axisymmetric structure, and the symmetry axes of the volute, the straight-blade fan, the air guide channel and the heating device are all arranged along the same straight line. The volute, the straight blade fan, the air guide channel and the heating device in the air duct system are reasonably arranged, so that air flow discharged by the volute in the air duct system is easily guided by the air guide channel, uniformly flows to the heating device, is uniformly heated on the heating device, and finally outputs high-temperature and uniform air flow.
As an embodiment, the invention also provides a clothes dryer, the air channel structure is arranged in the clothes dryer, the roller is also arranged in the clothes dryer, and the motor for driving the roller and the fan in the air channel structure to rotate forwards and backwards is arranged in the clothes dryer. The clothes dryer provided by the invention can utilize one motor to drive the roller and the fan to rotate simultaneously, so that the cost is saved, the space is saved, and the motor can drive the roller and the fan to rotate forwards and backwards. The arrangement of the air duct structure in the clothes dryer can ensure that the air duct structure can discharge even and dispersed air flow under the condition of forward and reverse rotation, thereby achieving good drying effect on objects.
By adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1) the air duct structure provided by the invention is characterized in that an air guide channel for guiding airflow to be uniformly dispersed and discharged is arranged near the air outlet of the volute. The air guide channel is arranged to enable air flow discharged by the volute to be uniform and to have air flow along all directions, namely the air flow discharged by the air channel structure is more uniform and is diffused along all directions. When the air channel structure is used for drying objects, the objects to be dried are uniformly dried, local overheating is prevented, and the drying effect is ensured.
2) The air guide channel provided by the invention is reasonable in structure, and the air outlet of the volute extends outwards, so that the air guide channel guides the air flow discharged by the volute to the outside of the volute. The cross sections of the air inlet and the air outlet of the air guide channel are large, and the middle part of the air guide channel is narrow, so that the air guide channel is favorable for guiding airflow discharged from the volute into the air guide channel, and the airflow in the air guide channel is favorably and uniformly and divergently discharged.
3) The air guide channel comprises a first bell mouth-shaped structure and a second bell mouth-shaped structure which are arranged at an air inlet, the first bell mouth-shaped structure is convenient for guiding airflow discharged from the volute into the air guide channel, the second bell mouth-shaped structure is convenient for uniformly and divergently discharging the airflow in the air guide channel, and objects to be dried are uniformly dried. The slope of the side wall forming the cone shape in each cone section in the air guide channel is set to be a fixed value, so that the side wall of each cone section is along the plane which is inclined, and the air flow is guided more favorably. The slope change of the first conical section and the second conical section is more beneficial to guiding airflow to flow into the air guide channel; the slope change of the third conical section and the fourth conical section is more beneficial to the uniform and divergent flow and discharge of the airflow in the air guide channel.
4) The air guide channel of the invention can be provided with only two air guide side plates, has simple structure and can achieve the effect of enabling the air discharged by the volute to be uniform and dispersed. The invention also provides a scheme of utilizing the air guide side plate, the top wall and the bottom wall of the volute in the vertical direction to jointly enclose the air guide channel, and the existing structure of the volute is fully utilized to achieve the effects of saving cost and space and enabling the air guide channel to be more beneficial to collecting and guiding airflow.
5) The air duct structure provided by the invention is also provided with the heating device, and the air guide channel is matched with the heating device, so that air flow flowing to each part of the heating device is uniformly distributed, and the heating device is uniformly heated. And the position setting of wind-guiding passageway and heating device for the wind-guiding passageway can extend to heating device's both sides, does benefit to more and makes the air current flow on heating device evenly, and then forms even high temperature air current.
6) The invention also provides a clothes dryer, wherein the forward rotation and the reverse rotation of the fan and the roller can be realized through one motor in the clothes dryer. And spiral case, fan, wind-guiding passageway, heating device's setting in the wind channel structure for no matter the motor just, the reversal all makes the wind channel structure all can produce the even stoving air current of equivalent, makes and all can obtain better stoving effect under the circumstances of just, the reversal.
The following detailed description of embodiments of the invention refers to the accompanying drawings
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic view, partially in section, of an air duct structure according to the present invention;
fig. 2 is a partially enlarged schematic view of an air guide channel according to the present invention;
FIG. 3 is a schematic view of the air guiding passage embedded in the air outlet according to the air duct structure of the present invention;
fig. 4 is a schematic view of the air guiding channel portion embedded in the heating device housing in the air duct structure of the present invention.
Reference numerals in the drawings indicate: 1. a volute; 2. a fan; 3. an air outlet; 4. an air guide channel; 5. an air inlet; 6. an air outlet; 7. a first bell mouth configuration; 8. a second bell mouth configuration; 9. a first conical section; 10. a second cone section; 11. a third conical section; 12. a fourth cone section; 13. a wind guide side plate; 14. a top end face; 15. a top wall; 16. a bottom end face; 17. a bottom wall; 18. a heating device; 19. a straight blade fan; 20. a heating device housing.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments will be described in detail below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1
An air duct structure is generally arranged in household appliances with drying functions, and objects are dried by utilizing air flow generated by the air duct structure. The air duct structure is usually provided with a fan 2 for generating air flow, the fan 2 is embedded in a hollow volute 1, the hollow shell of the volute 1 forms an air duct for the fan 2 to generate air flow, and the end part of the air duct is provided with an air outlet 3 for exhausting air flow. Therefore, once the fan 2 runs, airflow is continuously discharged from the air outlet 3, and the airflow generated at the air outlet 3 is guided to the object to be dried, so that the object can be dried by the airflow. Due to the structure of the volute 1, the airflow generated at the air outlet 3 may be uneven, for example, for a conventional volute in a "P" shape, the airflow may be biased to be discharged from one sidewall of the volute, which may cause the objects to be dried to be uneven in the drying airflow. With the air duct structure of the partially built-in heating device 18, the local part of the object to be dried may be continuously baked by the high-temperature drying air flow, and under extreme conditions, the local part of the object may even catch fire. In view of the above technical problems, the present embodiment provides an air duct structure, which can make the air flow discharged from the volute casing 1 more uniformly delivered. As shown in fig. 1-4, the air duct structure of the present embodiment is provided with an air guiding channel 4 at the air outlet 3 of the volute casing 1, and the air guiding channel 4 is used to uniformly diffuse and discharge the drying air flow discharged from the air outlet 3.
As shown in fig. 1-4, the air guiding passage 4 extends from a position close to the air outlet 3 to the outside of the scroll casing 1, so as to guide the drying air flow discharged from the air outlet 3 of the scroll casing 1 to the outside of the scroll casing 1, i.e. guide the drying air flow generated by the scroll casing 1. In order to facilitate the flow of the air flow, the air guide channel 4 extends along the axial direction of the air outlet 3. The arrangement enables the air guide channel 4 to extend along a straight line, and is more beneficial to the flow of air compared with a channel extending along a bent curve. And the air guide channel 4 is arranged along the axial direction of the air outlet 3, so that the air flow discharged from the air outlet 3 can flow into the air guide channel 4 more easily. An air inlet 5 is arranged at the end part of the air guide channel 4 close to the air outlet 3, and an air outlet 6 is arranged at the end part opposite to the air inlet 5; so that the air flow discharged from the air outlet 3 flows in the air guiding channel 4 along the direction from the air inlet 5 to the air outlet 6. The air guide channel 4 is a structure that the cross sections of the air inlet 5 and the air outlet 6 are large in area, and the cross section of the middle part between the air inlet and the air outlet is narrowed. The cross section area of the air inlet 5 of the air guide channel 4 is set to be larger, so that more air flow discharged from the air outlet 3 can enter the air guide channel 4, even if the air guide channel 4 collects more air flow discharged from the volute 1. The cross section of the middle part of the air guide channel 4 is firstly narrowed, and the area of the cross section at the air outlet 6 is enlarged again, so that the air flow discharged from the air outlet 6 of the air guide channel 4 can be guided to be diffused all around, and the uniform flow of the drying air flow is further facilitated. As shown by the arrows in fig. 3, the airflow in the air guiding channel 4 can be dispersed around at the air outlet 6.
In order to better guide the air flow, a bell-mouth structure which gradually narrows towards the middle part can be arranged at the air inlet 5 and the air outlet 6, and the bell-mouth structure with the inclined boundary is more beneficial to guiding the air flow. As shown in fig. 1 to 4, the air guiding channel 4 gradually narrows from the air inlet 5 to the middle to form a first bell-mouth structure 7, and the air guiding channel 4 gradually narrows from the air outlet 6 to the middle to form a second bell-mouth structure 8. And first horn mouth type structure 7 links to each other at wind-guiding passageway 4's middle part with second horn mouth type structure 8, and the middle part continuous position of first horn mouth type structure 7 and second horn mouth type structure 8 constitutes wind-guiding passageway 4's middle part region, and then makes middle part all narrow for wind-guiding passageway 4's air intake 5, air outlet 6 department. This arrangement makes it easier to collect more of the air flow exiting the air outlet 3 at the location of the air inlet 5, and to make the air flow exiting the air guiding channel 4 more divergent and uniform at the air outlet 6.
As shown in fig. 1 to 4 in particular, the first bell-mouth-shaped structure 7 comprises a first conical section 9 near the air inlet opening 5, and the slope of the side wall of the first conical section 9 forming the cone is constant. The side wall of the first conical section 9 is set to be a structure with a constant slope, so that the side wall which is enclosed to form the first conical section 9 is of an oblique inclined structure, and the air flow flows more smoothly and more favorably to be guided relative to the curved side wall with the changed curvature. If the side wall enclosing the first conical section 9 is provided with a curved side wall with a changing slope, a vortex may occur at a part of the position, which is not beneficial to the flow of the gas. The first conical section 9 is connected to a second conical section 10 extending towards the middle of the wind channel 4, and the slope of the side wall of the second conical section 10 forming the cone is constant. In the second tapered section 10, as also described earlier, in order to make the gas flow more smooth in the second tapered section 10, the slope of the side wall of the taper constituting the second tapered section 10 is also set to a constant value. Compared with the first conical section 9, the first conical section 9 of the second conical section 10 is close to the air inlet 5 of the air guide channel 4, and the second conical section 10 is closer to the middle of the air guide channel 4, so the second conical section 10 should be narrower relative to the first conical section 9, the slope of the second conical section 10 is reduced relative to the slope of the first conical section 9, and the air flow is easy to flow in from the air inlet 5 of the air guide channel 4 and flow along the air guide channel 4.
Similarly, the second bell-mouth-shaped structure 8 disposed at the air outlet 6 of the air guide channel 4 is divided into a third conical section 11 and a fourth conical section 12, and for smooth flow of air flow, the sidewalls of the third conical section 11 and the fourth conical section 12 are sidewalls with a constant slope. As shown in fig. 1 to 4 in particular, the second bell-mouth shaped structure 8 comprises a third conical section 11 near the air outlet 6, and the slope of the side wall of the third conical section 11 forming the cone is a fixed value; the third conical section 11 is connected with a fourth conical section 12 extending to the middle part of the wind guide channel 4, the slope of the side wall of the fourth conical section 12 forming the cone shape is a fixed value, and the slope is reduced relative to the third conical section 11. The slope of the fourth conical section 12 is small relative to the slope of the third conical section 11, and the air guide channel 4 forms a structure gradually enlarged from the middle part to the air outlet 6 at the air outlet 6, so that when the air flow in the air guide channel 4 is discharged from the air outlet 6, the cross-sectional area at the air outlet 6 is larger, and the air flow can be more diverged and uniform. The second conical section 10 and the fourth conical section 12 are connected at the middle part of the air guide channel 4 to form a complete air guide channel 4. Preferably, as shown in fig. 2, circular arc filtering is arranged at the connecting position of the conical sections with different slopes in the air guiding channel 4, so that a sharp-angled structure caused by direct connection between the conical sections with different slopes is avoided, and the situation that hands are scratched by the sharp-angled structure is avoided. The structure of each conical section in the air guide channel 4 provided by the embodiment is reasonably arranged, so that air flow can smoothly flow in each conical section; and the concatenation between four different conic sections for be convenient for collect into wind-guiding passageway 4 by 3 departments exhaust flows of air exit of spiral case 1, and be more easily even, disperse by the 4 exhaust gas of wind-guiding passageway, make the 4 exhaust flows of wind-guiding passageway do benefit to more evenly drying to the object.
The air guide channel 4 may be a split-joint structure surrounded by a plurality of side walls, or an integrally formed housing structure. When the air guide channel 4 is a structure enclosed by a plurality of side walls, the structure can be enclosed to form a structure which is only provided with the air inlet 5 and the air outlet 6, and the other part is closed. Or, in order to simplify the structure of the air guide passage 4 and save materials, the air guide passage 4 is surrounded by the air guide side plates 13 located at both sides in the horizontal direction. The two side air guide side plates 13 can be respectively set to be in a structure similar to a C shape, and the two side air guide side plates 13 are symmetrical about the central axis of the air guide channel 4 and jointly enclose the shape of the air guide channel 4 with larger cross section area at two ends and narrowed middle part.
The air guide side plate 13 may define a circumferential boundary of the air guide passage 4, i.e., a left and right side boundary of the air guide passage 4 as shown in the drawing. However, the boundary between the air guiding channel 4 and the vertical direction perpendicular to the circumferential direction is not defined, that is, the top end and the bottom end of the air guiding channel 4 are not defined, that is, the direction of the air guiding channel 4 perpendicular to the drawing is not defined, which may cause the air entering the air guiding channel 4 and discharged from the scroll casing 1 to be discharged from the vertical direction without limitation, and affect the capability of collecting the air flow of the air guiding channel 4. Therefore, it is preferable that the top end surface 14 and the bottom end surface 16 of the air guide side plate 13 in the vertical direction are respectively abutted against the wall of the scroll casing 1 to define the boundary of the air guide passage 4 from the vertical direction, and the air flow in the air guide passage 4 is prevented from leaking out of the air guide passage 4 from the vertical direction. Or the air duct structure is provided with an integral shell, the volute 1 and the air guide channel 4 are embedded in the shell of the air duct structure, the top end surface 14 and the bottom end surface 16 of the air guide side plate 13 can be respectively abutted against the shell wall of the air duct structure, and the shell wall of the air duct structure can be used for limiting the outside of the air guide channel 4 from the vertical direction in the same way. That is, the air guide side plate 13 and the wall of the volute 1 or the housing wall of the air duct structure can enclose an air guide channel 4 with a closed periphery, so that only the air inlet 5 and the air outlet 6 of the air guide channel 4 have an opening and other closed structures, and the air flow in the air guide channel 4 can be better limited, and can only flow in from the air inlet 5 and flow out from the air outlet 6, and flow along the guide of the air guide channel 4.
Since the air guiding channel 4 is used to guide the flow of the air flow discharged from the air outlet 3 of the volute 1, that is, the air guiding channel 4 only guides the air flow discharged from the air outlet 3 of the volute 1. Therefore, the circumferential horizontal boundary of the air guide channel 4 only needs to coincide with the circumferential horizontal boundary of the air outlet 3 of the volute 1, and the vertical boundary of the air guide channel 4 only needs to coincide with the vertical boundary of the air outlet 3 of the volute 1. That is, it is further preferable that the top end surface 14 in the vertical direction of the air guide side plate 13 and the top wall 15 in the vertical direction at the air outlet 3 are located on the same plane, and the bottom end surface 16 in the vertical direction of the air guide side plate 13 and the bottom wall 17 in the vertical direction at the air outlet 3 are located on the same plane. The vertical boundary of the air guide channel 4 coincides with the vertical boundary of the air outlet 3.
As shown in the figure, in order to ensure that the air flow discharged from the air outlet 3 can flow into the air guiding passage 4, the air guiding passage 4 can be located close to the air outlet 3, and the closer the air inlet 5 of the air guiding passage 4 is to the air outlet 3, the better. As shown in the embodiment, part of the air inlet 5 of the air guiding channel 4 is embedded in the air outlet 3 of the volute 1; it is ensured that the air flow discharged at the air outlet 3 can partially flow into the air guiding channel 4. Since the air guiding passage 4 is partially embedded in the air outlet 3, that is, the air guiding side plate 3 extends into the air outlet 3, the wall of the spiral casing 1 can be used to define the boundary of the air guiding passage 4 in the vertical direction. Preferably, a top end surface 14 in the vertical direction of the air guide side plate 13 abuts against a top wall 15 in the vertical direction at the air outlet 3 of the scroll casing 1, and a bottom end surface 16 in the vertical direction of the air guide side plate 13 abuts against a bottom wall 17 in the vertical direction at the air outlet 3 of the scroll casing 1. The top wall 15 and the bottom wall 17 in the vertical direction at the exhaust outlet 3 of the volute 1 can be used for jointly limiting the vertical direction of the air guide channel 4. The air guide side plate 13 can be spliced into the air guide channel 4 with a periphery limited boundary only by abutting against the top wall 15 and the bottom wall 17 of the volute 1, so that air flow in the air guide channel 4 is not easy to disperse outwards, and the air can flow well in the air guide channel 4. And the top wall 15 and the bottom wall 17 at the air outlet 3 of the volute 1 are used for limiting the vertical boundary of the air guide channel 4, so that only the air guide side plates 13 at two sides are required to be arranged in the air guide channel 4, materials can be saved relatively, and the structure can be simplified.
In the air duct structure provided by the embodiment, the air guide channel 4 is reasonably arranged at the air outlet 3 of the volute 1. Through the setting of wind-guiding passageway 4 for the air current of spiral case 1 exhaust can discharge through wind-guiding passageway 4 evenly, divergently, can dry the object more evenly when making the stoving air current flow to the object.
Example 2
On the basis of the above embodiments, the present embodiment provides an air duct structure. The air duct structure provided in this embodiment is the same as the air duct structure provided in embodiment 1, and an air guide passage 4 is provided near the air outlet 3 of the scroll casing 1, and the air guide passage 4 guides the flow of the air flow discharged from the scroll casing 1. Compared with the air duct structure of the embodiment 1, the heating device 18 is arranged inside the air duct structure of the embodiment, and the air flow can be heated by the heating device 18, so that the temperature of the drying air flow is increased, and a better drying effect is obtained. And because the air guide channel 4 has the effect of dispersing and uniformly distributing the air flow, the air outlet 5 of the air guide channel 4 at least extends to the position close to the heating device 18, so that the air discharged from the air guide channel 4 can uniformly flow to the heating device 18, and further the drying air flow with more uniform distribution and temperature rise is obtained. Preferably, in order to ensure that the air flow discharged from the air guiding channel 4 can contact and pass through the heating treatment of the heating device 18, as shown in the figure, part of the structure of the heating device 18 is embedded in the air outlet 6 of the air guiding channel 4. So that part of the air flow discharged from the air guiding passage 4 is necessarily subjected to the heating process by the heating device 18.
As shown in fig. 1, 3 and 4, the air outlet 6 of the air guiding channel 4 is disposed opposite to the heating device 18, and a middle portion of the heating device 18 is at least opposite to the air outlet 6 of the air guiding channel 4. The air outlet 6 of the air guide channel 4 is arranged right opposite to the heating device 18, so that air flow discharged from the air guide channel 4 can easily contact the heating device 18, and further heating treatment of the heating device 18 is obtained. The middle part of the heating device 18 is at least opposite to the air outlet 6 of the air guide channel 4, and the air outlet 6 of the air guide channel 4 can cover the middle part of the heating device 18; the structure at the air outlet 6 of the air guide channel 4 extends towards the two circumferential horizontal sides, and the two horizontal side walls perpendicular to the axial direction at the air outlet 6 of the air guide channel 4 respectively extend towards the two sides of the middle part of the heating device 18; the air flow discharged from the air guide channel 4 is guided to flow to the two sides of the middle part of the heating device 18, and then the air flow discharged from the air guide channel 4 is more uniformly contacted with the heating device 18, so that the air flow is uniformly heated on the heating device 18, and a high-temperature drying air flow which is more uniformly distributed is formed. Preferably, the central axis of the air guiding channel 4 is arranged opposite to the central axis of the heating device 18. Even if the middle part of the heating device 18 is just in time located in the middle of the air outlet 6 of the air guide channel 4, the air guide side plates 13 on the two sides are just in time extended to the two sides of the central axis of the heating device 18 respectively, and then the air flow guided to flow out of the air guide side plates 13 symmetrically flows to the heating device 18 left and right, so that the air flow discharged from the air guide channel 4 is heated more uniformly, and uniform high-temperature drying air flow is formed after the air flow is heated.
In some drying devices, the direction of the airflow to be dried can be changed, i.e. the flow direction of the airflow discharged from the volute 1 can be changed. That is, as shown in the figure, in the air duct structure provided in this embodiment, the straight-blade fan 19 capable of rotating forward and backward is disposed in the volute 1, the direction of the drying airflow is changed by the straight-blade fan 19, and the straight-blade fan 19 can change the direction of the airflow and make the airflow flow rates before and after the direction change similar at the same time of changing the direction of the airflow. The volute is usually provided with a volute tongue, and the arrangement of the volute tongue facilitates the discharge of the airflow generated in the volute and prevents the airflow from continuously circulating in the volute 1 and being incapable of being discharged. In the air duct structure provided by this embodiment, because the airflow in the volute casing 1 needs to change direction, and if the structure of the volute tongue is fixed, the volute casing 1 cannot be suitable for guiding the airflow in the volute casing 1 to flow out under the condition of airflow change, so the volute casing 1 provided by this embodiment is a structure without the volute tongue arranged inside. The structure of the volute casing 1 without the volute tongue may cause uneven wind speed distribution at various positions on the wind channel section of the volute casing 1, and finally, the local part of the heating device 18 may be overheated due to small wind volume and may be burned out in severe cases. Therefore, in the present embodiment, the air guiding channel 4 is further disposed at the position of the air outlet 3 of the volute casing 1, and the air flowing to the heating device 18 is more uniform and divergent by the arrangement of the air guiding channel 4, so that the heating device is not locally overheated. The air duct structure provided by the embodiment is reasonable in arrangement, so that air exhausted from the volute 1 flows to the heating device 18 uniformly, and is heated uniformly on the heating device 18 to form uniform high-temperature drying air flow.
As shown in the figure, the air duct structure provided by the present embodiment includes a volute 1 and a straight blade fan 19 embedded in the volute 1, and an air guiding channel 4 extending from the air outlet 3 to a heating device 18 is disposed at the air outlet 3 of the volute 1. Namely, the air channel structure comprises a volute 1, an air guide channel 4 and a heating device 18 which are sequentially connected from bottom to top, so that the air flow generated by a straight-blade fan 19 in the volute 1 firstly flows to the air guide channel 4 and forms uniform and divergent air flow after being processed by the air guide channel 4. Then, the air flow guided in the air guide channel 4 uniformly and divergently flows to the heating device 18, so that the air speed and the air volume at each position on the heating device 18 are uniformly distributed, and uniform heating is finally realized. As shown in the figure, the volute 1, the straight blade fan 19, the air guide channel 4 and the heating device 18 are all in an axisymmetric structure. Therefore, in order to make the air flow in various positions in the air duct structure flow more smoothly and the air guide channel 4 more conveniently generate uniform and divergent air flow in the air duct structure, the symmetric axes of the volute 1, the straight-blade fan 19, the air guide channel 4 and the heating device 18 are all required to be arranged along the same straight line. The structure that everywhere sets up rationally in the wind channel structure that this embodiment provided promptly, the even stoving air current of final output of being convenient for.
Example 3
The present embodiment provides a clothes dryer based on the above embodiments, the clothes dryer is internally provided with the air channel structure as described in the above embodiments, and the interior of the clothes dryer comprises a drum, and the drum and the air channel structure adopt a motor for the fan 2. Because for the clothes dryer, the roller needs to realize forward rotation and backward rotation, and the driving motor of the roller needs to drive the roller to move forward and backward, so the driving motor needs to rotate forward and backward, and because the motor drives the fan 2 in the air channel structure to move simultaneously in order to save cost and space, so the fan 2 needs to be set as a fan capable of forward rotation and backward rotation, and the corresponding volute 1 needs to be set as a volute 1 structure suitable for forward rotation and backward rotation of the fan 2, namely the volute 1 can be set as a structure without a volute tongue as above, and because of no volute tongue, the flow velocity in each position in the volute 1 needs to be controlled to be uniformly distributed, an air guide channel 4 needs to be arranged near the air outlet 3, the air flow at the air outlet 3 is guided to be uniformly distributed by the air guide channel 4, and further, the drying effect is prevented from being influenced by local overheating.
The clothes dryer provided by the embodiment can drive the operation of the fan in the roller and the air channel structure simultaneously by utilizing one motor inside, so that the cost is saved and the space is saved. And under the condition that the roller needs to rotate forwards and backwards, the fan is correspondingly caused to rotate forwards and backwards, and the straight blade fan provided by the embodiment can realize the same air flow rate under the condition of forward rotation and backward rotation, so that the drying effect is prevented from being influenced. In addition, the dryer provided by the embodiment is internally provided with the air duct structure, so that under the condition that positive and negative air flows are generated in the volute, the air flows discharged by the volute can be uniformly heated, and uniformly distributed high-temperature drying air flows are finally formed, so that objects to be dried are uniformly dried, and local overheating is prevented.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The air duct structure comprises a volute (1), wherein a fan (2) and an air outlet (3) for exhausting air flow are arranged in the volute (1), and the air duct structure is characterized in that an air guide channel (4) extending to the outside of the volute (1) is arranged at the air outlet (3), and the air guide channel (4) is an air flow channel gradually narrowing from two ends to the middle.
2. An air duct structure as claimed in claim 1, wherein the air guiding channel (4) extends along the axial direction of the air outlet (3), an air inlet (5) and an air outlet (6) are respectively arranged at two ends of the extending direction, and the air inlet (5) is connected with the air outlet (3); wind-guiding passageway (4) are located by air intake (5) and are narrowed gradually, form first horn mouth type structure (7) to the middle part, and wind-guiding passageway (4) are located by air outlet (6) and are narrowed gradually, form second horn mouth type structure (8) to the middle part, and first horn mouth type structure (7) link to each other at the middle part of wind-guiding passageway (4) with second horn mouth type structure (8).
3. An air duct structure according to claim 2, characterized in that the first bell-mouth-shaped structure (7) comprises a first conical section (9) near the air inlet (5), the slope of the side wall of the first conical section (9) forming the cone being constant;
the first conical section (9) is connected with a second conical section (10) extending to the middle part of the wind guide channel (4), the slope of the side wall of the second conical section (10) forming the cone is a fixed value, and the slope is reduced relative to the first conical section (9);
the second bell-mouth-shaped structure (8) comprises a third conical section (11) near the air outlet (6), and the slope of the side wall of the third conical section (11) forming a cone is a fixed value;
the third conical section (11) is connected with a fourth conical section (12) extending to the middle of the wind guide channel (4), the slope of the side wall of the fourth conical section (12) forming a cone is a fixed value, and the slope is reduced relative to the third conical section (11);
the second conical section (10) is connected with the fourth conical section (12);
preferably, circular arc filtering is arranged at the position where the conical sections with different slopes in the air guide channel (4) are connected.
4. An air duct structure as claimed in claim 3, wherein the air guide passage (4) is defined by two air guide side plates (13), the two air guide side plates (13) are respectively located at two circumferential sides of the air outlet (3) close to the volute (1), and the two air guide side plates (13) are symmetrically arranged along the axis of the air guide passage (4);
preferably, the top end surface (14) of the air guide side plate (13) in the vertical direction and the top wall (15) of the volute (1) in the vertical direction at the air outlet (3) are located on the same plane, and the bottom end surface (16) of the air guide side plate (13) in the vertical direction and the bottom wall (17) of the volute (1) in the vertical direction at the air outlet (3) are located on the same plane.
5. An air duct structure as claimed in claim 4, wherein the air inlet (5) of the air guiding channel (4) is partially embedded in the air outlet (3) of the volute (1);
preferably, the top end surface (14) of the air guide side plate (13) in the vertical direction is abutted with the top wall (15) of the volute (1) in the vertical direction at the air outlet (3), and the bottom end surface (16) of the air guide side plate (13) in the vertical direction is abutted with the bottom wall (17) of the volute (1) in the vertical direction at the air outlet (3).
6. An air duct structure according to any one of claims 2-5, characterized in that a heating device (18) is provided in the air duct structure, and the air outlet (5) of the air guiding channel (4) extends at least to a position close to the heating device (18);
preferably, part of the structure of the heating device (18) is embedded in the air outlet (6) of the air guide channel (4).
7. An air duct structure as claimed in claim 6, wherein the air outlet (6) of the air guiding channel (4) is disposed opposite to the heating device (18), and the middle part of the heating device (18) is at least opposite to the air outlet (6) of the air guiding channel (4);
two horizontal side walls perpendicular to the axial direction at the air outlet (6) of the air guide channel (4) respectively extend to two sides of the middle part of the heating device (18);
preferably, the central axis of the air guide channel (4) is arranged opposite to the central axis of the heating device (18).
8. An air duct structure according to claim 7, characterized in that a straight blade fan (19) capable of rotating positively and negatively is arranged in the volute (1), and the volute (1) is internally provided with no volute tongue.
9. The air duct structure according to claim 8, wherein the air duct structure comprises a volute (1) and a straight-blade fan (19) embedded in the volute (1), and an air guide channel (4) extending from the air outlet (3) to the heating device (18) is arranged at the air outlet (3) of the volute (1);
the volute (1), the straight-blade fan (19), the air guide channel (4) and the heating device (18) are all in an axisymmetric structure, and the symmetric axes of the volute (1), the straight-blade fan (19), the air guide channel (4) and the heating device (18) are all arranged along the same straight line.
10. A clothes dryer, characterized in that the air channel structure according to any one of claims 1-9 is arranged inside, the clothes dryer is also internally provided with a roller, and a motor for driving the roller and the fan (2) in the air channel structure to rotate forwards and backwards is arranged inside the clothes dryer.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011297983.1A CN114541112A (en) | 2020-11-18 | 2020-11-18 | Air duct structure and clothes dryer |
| PCT/CN2021/130538 WO2022105701A1 (en) | 2020-11-18 | 2021-11-15 | Air duct structure and clothes dryer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011297983.1A CN114541112A (en) | 2020-11-18 | 2020-11-18 | Air duct structure and clothes dryer |
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| Publication Number | Publication Date |
|---|---|
| CN114541112A true CN114541112A (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011297983.1A Pending CN114541112A (en) | 2020-11-18 | 2020-11-18 | Air duct structure and clothes dryer |
Country Status (2)
| Country | Link |
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| CN (1) | CN114541112A (en) |
| WO (1) | WO2022105701A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117265851A (en) * | 2022-06-22 | 2023-12-22 | 湖北美的洗衣机有限公司 | Drying control method, drying control device, clothes treatment equipment and storage medium |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202116896U (en) * | 2011-03-31 | 2012-01-18 | 无锡小天鹅股份有限公司 | Drying and condensing device of washing and drying integrating machine |
| CN103591674B (en) * | 2013-07-16 | 2015-06-10 | 海尔集团公司 | Air-conditioning air blowing device and vertical air conditioner |
| CN106637872B (en) * | 2015-10-28 | 2021-06-11 | 青岛胶南海尔洗衣机有限公司 | Clothes dryer |
| US20180051409A1 (en) * | 2016-08-18 | 2018-02-22 | Haier Us Appliance Solutions, Inc. | Fan assembly for a dryer appliance |
| KR102436700B1 (en) * | 2017-03-14 | 2022-08-25 | 엘지전자 주식회사 | Device for treating laundry |
| CN109680451A (en) * | 2019-01-09 | 2019-04-26 | Tcl家用电器（合肥）有限公司 | Washing machine drying channel structure and washing machine |
-
2020
- 2020-11-18 CN CN202011297983.1A patent/CN114541112A/en active Pending
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- 2021-11-15 WO PCT/CN2021/130538 patent/WO2022105701A1/en active Application Filing
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| WO2022105701A1 (en) | 2022-05-27 |
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