Drying tunnel system and drying equipment

Abstract

The utility model relates to the technical field of household appliances, and provides a drying tunnel system and drying device.The drying tunnel system comprises an air duct plate, a centrifugal fan and a jet device, the air duct plate comprises a volute part and an air duct part connected with the volute part, an air outlet duct is formed in the air duct part, the centrifugal fan is arranged on the volute part, and the jet device is arranged on the air duct part; the jet device is suitable for gathering airflow in the air outlet duct. The jet device is arranged in the air outlet duct, high-speed airflow is blown into the air outlet duct, the airflow in the air outlet duct can be gathered and guided, the moving capacity of the airflow in the streamline direction of the air outlet duct is enhanced, airflow separation and vortex forming at the turning position and the outlet position of the air duct are reduced, and therefore the uniformity and stability of the airflow are improved; and the air outlet quality and the air speed are improved, so that the drying efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of household appliances, and particularly relates to a drying channel system and a drying device. BACKGROUND

[0002] In the related art, a multi-wing centrifugal fan is widely applied to drying devices due to its advantages in flow, pressure coefficient, noise and structure. However, the drying device has limited installation space for the fan, and the air duct is short, which is prone to vortex at the airflow turning position. The airflow separation in the air duct of the drying channel system is serious, which affects the drying efficiency. CONTENT OF THE UTILITY MODEL

[0003] Embodiments of the present application provide a drying system and a drying device to solve the problem of low drying efficiency of the existing drying device.

[0004] In a first aspect, the embodiments of the present application provide a drying channel system, comprising:

[0005] An air duct plate comprising a volute portion and an air duct portion connected to the volute portion, wherein the air duct portion forms an air outlet air duct;

[0006] A centrifugal fan arranged in the volute portion;

[0007] A jet device arranged in the air duct portion, wherein the jet device is adapted to converge the airflow in the air outlet air duct.

[0008] In some embodiments of the present application, the jet device is arranged on one side of the air duct portion close to the volute portion;

[0009] And / or, the air duct portion comprises a straight section and a bending section connected to the straight section, and the jet device is arranged on the bending section;

[0010] And / or, the air duct portion comprises a straight section and an inclined section connected to the straight section, and the jet device is arranged on the inclined section.

[0011] In some embodiments of the present application, the jet device comprises:

[0012] A fan;

[0013] An airflow passage, wherein the inlet of the airflow passage is in communication with the fan, and the outlet of the airflow passage is provided with a jet hole, and the jet hole is arranged towards the air outlet of the air duct portion.

[0014] In some embodiments of the present application, the jet device further comprises an air deflector, wherein the air deflector is installed in the air outlet air duct, and the air deflector forms the airflow passage, and the jet hole is located on one side of the air deflector close to the air outlet.

[0015] In some embodiments of the present application, the cross-sectional area of the middle part of the air deflector is greater than the cross-sectional area of the two sides of the air deflector along the air outlet direction of the air outlet duct.

[0016] In some embodiments of the present application, the air deflector has a curved air deflection surface.

[0017] In some embodiments of the present application, the number of the jet flow holes is multiple, and the multiple jet flow holes are arranged at intervals along the length direction of the air deflector.

[0018] In some embodiments of the present application, the number of the air deflectors is multiple.

[0019] The multiple air deflectors are arranged at intervals along a first direction, and the first direction is perpendicular to the air outlet direction of the air outlet duct; and / or the multiple air deflectors are arranged at intervals along the extension direction of the air outlet duct.

[0020] In some embodiments of the present application, the multiple air deflectors are arranged in parallel between the corresponding airflow channels, and each airflow channel is connected to the same fan.

[0021] In some embodiments of the present application, the cross-sectional area of the air inlet of the jet flow hole is greater than the cross-sectional area of the air outlet of the jet flow hole.

[0022] In some embodiments of the present application, the air deflector is rotatably arranged in the air duct part.

[0023] In a second aspect, the embodiments of the present application also provide a drying device, which comprises the air duct system as described in the above embodiments.

[0024] The air duct system provided by the embodiments of the present application comprises an air duct plate, a centrifugal fan and a jet flow device. The air duct plate comprises a volute part and an air duct part connected to the volute part. The air duct part forms an air outlet duct. The centrifugal fan is arranged in the volute part. The jet flow device is arranged in the air duct part. The jet flow device is adapted to converge the airflow in the air outlet duct. By arranging the jet flow device in the air outlet duct, high-speed airflow is blown into the air outlet duct, which helps to converge and guide the airflow in the air outlet duct, so that the movement ability of the airflow along the streamline direction of the air outlet duct is enhanced. The airflow separation and vortex formation at the turning part and the outlet of the air duct are reduced, thereby improving the uniformity and stability of the airflow, improving the air outlet quality and air speed, and thus improving the drying efficiency.

[0025] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced. Obviously, the drawings in the following description only constitute some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort on the basis of these drawings.

[0027] In order to more completely understand the present application and its beneficial effects, the following will be described with reference to the drawings. In the following description, the same reference numerals represent the same parts.

[0028] Figure 1 Structure diagram of the drying tunnel system provided by the embodiments of the present application Figure 1 .

[0029] Figure 2 Structure diagram of the drying tunnel system provided by the embodiments of the present application Figure 2 .

[0030] Figure 3 Partial enlarged diagram of A in Figure 2 .

[0031] Figure 4 Structure diagram of the deflector provided by the embodiments of the present application

[0032] Figure 5 Speed streamline diagram of the fan without the jet device

[0033] Figure 6 Outlet flow speed diagram of the fan without the jet device

[0034] Figure 7 Speed streamline diagram of the fan with the jet device

[0035] Figure 8 Outlet flow speed diagram of the fan with the jet device

[0036] Reference numerals:

[0037] 100, air duct plate; 110, volute part; 120, air duct part; 121, air outlet air duct; 122, air outlet;

[0038] 200, centrifugal fan

[0039] 300, jet device; 310, jet hole; 320, deflector DETAILED DESCRIPTION

[0040] The embodiments of the present application will be further described in detail below with reference to the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0041] In the description of the embodiments of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the embodiments of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0043] In the embodiments of the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0044] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present specification and the features of different embodiments or examples without contradiction.

[0045] In the related art, the multi-wing centrifugal fan is widely used in household appliances such as washing and drying integrated washing machines and clothes dryers due to its advantages in flow, pressure coefficient, noise and structure. However, with the embedded installation of washing machines, the size design of the washing machine is limited, and the space left for the fan installation on the washing and drying integrated machine type is limited. Therefore, the air duct of the fan is short during design, and vortex is prone to occur at the air flow turning part, the air flow separation in the air duct is serious, and the drying efficiency of the drying equipment is affected.

[0046] The embodiments of the present application provide an air duct system and a drying equipment to solve the problem of low drying efficiency of the existing drying equipment. The following will be described in combination with the accompanying drawings. Figures 1-8

[0047] The air duct system provided by the embodiments of the present application, as shown in Figure 1 and Figure 2 , comprises an air duct plate 100, a centrifugal fan 200 and a jet device 300. The air duct plate 100 comprises a volute part 110 and an air duct part 120 connected with the volute part 110. The air duct part 120 is formed with an air outlet air duct 121. The centrifugal fan 200 is arranged in the volute part 110. The jet device 300 is arranged in the air duct part 120. The jet device 300 is adapted to converge the air flow in the air outlet air duct 121.

[0048] It can be understood that in the embodiments, the air duct plate 100 comprises the volute part 110 and the air duct part 120. The volute part 110 is located at the inlet end of the air duct plate 100 and has a shape similar to a snail shell, which is used to guide the air flow to smoothly enter the centrifugal fan 200, thereby helping to reduce the turbulence and pressure loss of the air flow. The centrifugal fan 200 is located in the volute part 110 and can be driven to rotate by a driving device. When the impeller of the centrifugal fan 200 rotates, the air flow is sucked and accelerated, and then pushed to the air duct part 120 for air outlet. The air duct part 120 is connected with the volute part 110 to form the main part of the air outlet air duct 121. The cross-sectional shape of the air duct part 120 can be rectangular or circular, which is not limited in the embodiments.

[0049] The jet device 300 is installed in the air duct part 120 and can inject high-speed air flow into the air outlet air duct 121, which is used to guide and converge the air flow in the air outlet air duct 121, reduce the degree of air flow dispersion, enhance the movement ability of the air flow along the streamline direction of the air outlet air duct 121, reduce the air flow separation and vortex formation at the air duct turning part and the outlet, reduce the energy loss in the air flow transmission process, thereby improving the uniformity and stability of the air flow, improving the air outlet quality and air speed, and further improving the drying efficiency.

[0050] In an optional embodiment, in combination with Figure 1 and Figure 2 ​As shown, the jet device 300 is arranged at the side of the air duct 120 close to the volute 110, and can guide and converge the air flow just after it comes out of the centrifugal fan 200. Since the jet device 300 is located at the position where the air flow is initially accelerated, the air flow can be controlled earlier, the dispersion of the air flow is reduced, the air flow condition at the outlet of the centrifugal fan 200 is improved, and the vortex and turbulence are reduced.

[0051] In an optional embodiment, the air duct 120 includes a straight section and a bending section connected to the straight section, and the jet device 300 is arranged at the bending section.

[0052] Due to the limitation of the installation space in the drying equipment, the air duct 120 usually includes a straight section and a bending section, and the low-speed vortex is prone to occur at the bending section, and the air flow separation phenomenon is more serious. Arranging the jet device 300 at the bending section can more effectively reduce the vortex and separation phenomenon of the air flow when turning, improve the local flow field, and enhance the flow capacity of the air flow to the air outlet 122.

[0053] In an optional embodiment, the air duct 120 includes a straight section and a bending section connected to the straight section, and the jet device 300 is arranged at the bending section.

[0054] For example, the horizontal plane of the drying equipment in use can be taken as the reference, the region of the air duct 120 parallel to the horizontal plane is the straight section, the region of the air duct 120 at a certain inclination angle with the horizontal plane is the inclined section, and the air flow "climbs" at the inclined section, and the low-speed vortex is prone to occur. Arranging the jet device 300 at the inclined section helps to improve the air flow separation phenomenon and improve the air outlet quality.

[0055] In an optional embodiment, the jet device 300 includes a fan and an air flow channel, the inlet of the air flow channel is in communication with the fan, and the outlet of the air flow channel is provided with a jet hole 310, and the jet hole 310 is arranged towards the side of the air outlet 122 of the air duct 120.

[0056] In this embodiment, the fan of the jet device 300 is used to generate additional air flow, the air flow is sprayed out of the jet hole 310 of the air flow channel to form high-speed air flow, and the high-speed air flow is used to guide and converge the air flow in the air outlet duct 121, so as to improve the air flow separation phenomenon in the air outlet duct 121 and eliminate the generation of low-speed region and vortex.

[0057] In an optional embodiment, referring to Figure 1 、 Figure 2 and Figure 3 , the jet device 300 further includes a wind deflector 320, the wind deflector 320 is installed in the air outlet duct 121, and the wind deflector 320 is formed with an air flow channel, and the jet hole 310 is located at the side of the wind deflector 320 close to the air outlet 122.

[0058] In the embodiment, the airflow passage is formed in the interior of the air deflector 320, and the jet flow hole 310 is formed in the air deflector 320 to inject high-speed airflow into the air outlet duct 121. By arranging the air deflector 320, the smooth transition of the airflow is facilitated, the adverse effects of the jet flow device 300 on the airflow in the air outlet duct 121 are minimized, the loss of the airflow in the air outlet duct 121 is reduced, and the overall airflow efficiency is improved.

[0059] In an alternative embodiment, as shown in Figure 2 and Figure 4 , along the air outlet direction of the air outlet duct 121, the cross-sectional area of the middle part of the air deflector 320 is greater than that of the two sides of the air deflector 320. In an alternative embodiment, the air deflector 320 has a curved surface, for example, one of the upper air deflector surface and the lower air deflector surface is curved, or both are curved.

[0060] For example, the cross-sectional shape of the air deflector 320 can refer to the cross-sectional shape of an airfoil, which helps the airflow move better along the surface of the air deflector 320, reduces the separation of the airflow on the surface of the air deflector 320, thereby reducing airflow loss and energy consumption.

[0061] In an alternative embodiment, as shown in Figure 2 and Figure 3 , the number of jet flow holes 310 is multiple, for example, the number of jet flow holes 310 can be 2, 3 or more, and the multiple jet flow holes 310 are arranged at intervals along the length direction of the air deflector 320 (parallel to the cross-sectional direction of the air outlet duct 121).

[0062] In the embodiment, the interval distribution of the multiple jet flow holes 310 ensures uniform distribution of the airflow in the length direction of the air deflector 320, and each jet flow hole 310 is used to inject high-speed airflow into the air outlet duct 121. By arranging at intervals, the jet flow hole 310 can provide uniform airflow coverage, avoiding the phenomenon of uneven airflow distribution caused by the lack of high-speed airflow guidance in the local area, and fully improving the airflow separation phenomenon in the low-speed fluid area.

[0063] In an alternative embodiment, as shown in Figure 2 and Figure 3 , the number of air deflectors 320 is multiple, and the multiple air deflectors 320 are arranged at intervals along the first direction, which is perpendicular to the air outlet direction, that is, the multiple air deflectors 320 can be arranged at intervals on a certain cross-section of the air outlet duct 121, to ensure that the airflow in the area is fully guided and converged by the high-speed airflow of the jet flow device 300; in another alternative embodiment, the multiple air deflectors 320 are arranged at intervals along the extension direction of the air outlet duct 121 to improve the airflow distribution over a long distance.

[0064] It can be understood that the air flow channel and the jet hole 310 can be selected to be arranged or not arranged on each deflector 320 according to actual needs, and the embodiment is not limited in this regard.

[0065] In an optional embodiment, the air flow channels corresponding to the plurality of deflectors 320 are arranged in parallel, and each air flow channel is connected to the same fan. That is, the air flow blown by the fan can flow through multiple parallel paths into the air flow channels corresponding to the plurality of deflectors 320, and is sprayed out through the jet holes 310 of the air flow channels, so as to realize that one fan provides high-speed air flow to the jet holes 310 of different deflectors 320, and the air flow channels in the plurality of deflectors 320 can share the air flow output of the fan.

[0066] In an optional embodiment, the cross-sectional area of the air inlet of the jet hole 310 is greater than the cross-sectional area of the air outlet of the jet hole 310, which can increase the flow rate of the air flow at the outlet of the jet hole 310, thereby enhancing the guiding ability of the air flow in the air outlet duct 121, improving the uniformity of the air flow, reducing vortex and low-speed area, and thus improving the drying efficiency.

[0067] In an optional embodiment, the deflector 320 is rotatably arranged in the air duct portion 120, and the distribution and direction of the air flow can be flexibly adjusted according to actual needs, thereby improving the drying effect.

[0068] Exemplarily, the drying duct system further comprises an air inlet duct, the air inlet duct is in communication with the volute portion 110, and the air inlet duct and the air outlet duct 121 are located on opposite sides of the volute portion 110.

[0069] The drying duct system provided by the embodiment of the present application comprises an air duct plate 100, a centrifugal fan 200, and a jet device 300. The air duct plate 100 comprises a volute portion 110 and an air duct portion 120 connected to the volute portion 110. The air duct portion 120 forms an air outlet duct 121. The centrifugal fan 200 is arranged in the volute portion 110. The jet device 300 is arranged in the air duct portion 120, and is adapted to converge the air flow in the air outlet duct 121. By arranging the jet device 300 in the air outlet duct 121, high-speed air flow is blown into the air outlet duct 121, which helps to converge and guide the air flow in the air outlet duct 121, so that the movement ability of the air flow along the streamline direction of the air outlet duct 121 is enhanced, the air flow separation and vortex formation at the turning and outlet of the air duct are reduced, the uniformity and stability of the air flow are improved, the air outlet quality and air speed are improved, and thus the drying efficiency is improved.

[0070] In a second aspect, the embodiment of the present application further provides a drying equipment, which comprises the drying duct system in the above-described embodiments.

[0071] It can be understood that the drying apparatus of the embodiment can include but is not limited to a clothes dryer, a pulsator washing dryer, a drum washing dryer, a washing-drying integrated machine and the like household appliances.

[0072] The drying apparatus of the embodiment is provided with the jet device 300 in the air outlet air duct 121, which mainly functions to increase the mass flow at the outlet of the fan and reduce the flow loss inside the air duct. By installing the jet device 300 at the position where airflow separation is prone to occur, the radial flow capacity of the airflow in the air duct is strengthened to improve the flow in the local area, the flow capacity of the fluid along the air duct is enhanced, the airflow separation and vortex generation in the air duct are weakened, thereby improving the aerodynamic performance of the multi-blade centrifugal fan 200.

[0073] It can be understood that with the embedded installation of the washing machine, the standard size of the washing machine is strictly regulated, and the size of the cabinet tends to be standardized. The drying duct system is installed in the cabinet, and due to the size constraints, the air duct often becomes wide and narrow in the structural design, and there are many internal bends. For example, the original fan air duct model simulation flow velocity diagram of a washing-drying integrated machine is shown in Figure 5 , and the outlet flow velocity is shown in Figure 6 . It is found from Figure 1 that the original fan has a low-speed vortex in the air duct, and the outlet flow velocity is stabilized at 8.3 m / s.

[0074] In order to improve the airflow separation phenomenon, a jet device 300 is installed in the air duct of the washing-drying integrated machine, which mainly works as follows: the jet device 300 is installed at the position where the original fan generates a low-speed fluid region, and high-speed airflow is blown into the air duct from the jet hole 310 to break the low-speed fluid region in the original fan air duct and correct the flow direction of the fluid inside the fan. The fan air duct structure with the jet device 300 is simulated under the same conditions as the original fan simulation, and the internal velocity streamline diagram and outlet flow mass monitoring of the air duct are still detected, as shown in Figure 7 and Figure 8 . Compared with the original fan, the air in the air duct moves along the streamline direction of the air duct after the jet device 300 is added, the low-speed fluid region is improved, the mass flow at the outlet of the fan is increased, and the air speed is increased, thereby increasing the drying rate of the washing-drying integrated machine.

[0075] It can be understood that the drying apparatus has the beneficial effects of the above-mentioned embodiments, and the specific implementation can refer to the above-mentioned embodiments, which will not be repeated here.

[0076] In the above-mentioned embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0077] Finally, it should be noted that the above embodiments are only used to illustrate the present application, and are not intended to limit the present application. Although the present application is described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent replacements of the technical solutions of the present application do not deviate from the spirit and scope of the present application, and should be covered in the protection scope of the present application.

Claims

1. A toasting tunnel system, characterized in that, The application relates to a drying device comprising: a duct plate comprising a volute part and a duct part connected to the volute part, the duct part being formed with an air outlet; a centrifugal fan arranged in the volute part; a jet device arranged in the duct part, the jet device being adapted to converge air flow in the air outlet.

2. The oven system of claim 1, wherein, The jet device is arranged at a side of the duct part close to the volute part. The duct part comprises a straight section and a bending section connected to the straight section, and the jet device is arranged in the bending section. The duct part comprises a flat section and an inclined section connected to the flat section, and the jet device is arranged in the inclined section.

3. The oven system according to claim 1 or 2, characterized in that The jet device comprises: a fan; an air flow channel, an inlet of the air flow channel being communicated with the fan, and an outlet of the air flow channel being provided with a jet hole, the jet hole being arranged towards an air outlet of the duct part.

4. The oven system of claim 3, wherein, The jet device further comprises a baffle plate, the baffle plate being arranged in the air outlet, and the baffle plate being formed with the air flow channel, the jet hole being arranged at a side of the baffle plate close to the air outlet.

5. The oven system of claim 4, wherein, Along an air outlet direction of the air outlet, a cross-sectional area of a middle part of the baffle plate is greater than cross-sectional areas of two sides of the baffle plate. The baffle plate has a curved surface.

6. The oven system of claim 4, wherein, The jet hole is provided with a plurality of jet holes, and the plurality of jet holes are arranged along a length direction of the baffle plate.

7. The oven system of claim 4, wherein, The baffle plate is provided with a plurality of baffle plates. The plurality of baffle plates are arranged along a first direction perpendicular to an air outlet direction of the air outlet, and / or the plurality of baffle plates are arranged along an extension direction of the air outlet.

8. The oven system of claim 7, wherein, The plurality of baffle plates are connected to the same fan.

9. The oven system of claim 4, wherein, An inlet of the jet hole has a cross-sectional area greater than that of an outlet of the jet hole. The baffle plate is rotatably arranged in the duct part.

10. A drying apparatus, characterized by, The drying device comprises the duct system according to any one of claims 1-9.

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