Air duct structure, air supply system and clothes airing machine

Abstract

The utility model discloses an air duct structure, an air supply system and a clothes airing machine, and the air duct structure comprises a ventilation pipeline with an air inlet port on one side; the air uniformizing piece is arranged in the ventilation pipeline; a first air guide cavity is formed in the air uniformizing piece, the first air guide cavity is provided with a first air inlet and a first air outlet, the first air inlet is formed in the leeward side of the air uniformizing piece, and the first air outlet is formed downwards. According to the scheme, hot air can be evenly diffused through the air uniformizing and diffusing function of the air duct structure, the purpose of large-area air outlet drying is achieved, the large enough air outlet area and the uniform enough air outlet effect can be guaranteed on the basis that a small number of draught fans are used, and the drying efficiency is improved. The effects that the drying area is enlarged on the basis of low use cost, meanwhile, the high heat utilization rate is guaranteed, and the drying speed and the drying uniformity are improved are achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of clothes drying machines, and in particular to an air duct structure, an air supply system and a clothes drying machine. BACKGROUND

[0002] Clothes drying machines, as a common household appliance, play an increasingly important role in modern family life. With the improvement of people's living standards and the continuous improvement of the quality of life, the functions and designs of clothes drying machines are also constantly innovating. For example, some intelligent clothes drying machines have functions such as drying, sterilization, and mite removal, which can effectively remove bacteria and mites on clothes and protect the health of family members.

[0003] Existing clothes drying machines with drying functions can usually only achieve partial area drying. They usually use a flood fan for local drying, and the drying area is small, which cannot cover the entire area of the clothes drying machine. Therefore, when drying clothes, the clothes need to be hung in a specific position. If you want to increase the drying area, you need to increase the number of fans or use a long air duct for air supply. The long air duct uses a long strip-shaped air outlet at the bottom to achieve large-area air supply. However, if the fan is increased, the increase in the fan will increase the weight and component cost of the clothes drying machine. If a long air duct is used directly for air guiding, the air supply point of the fan to the long air duct is too concentrated, which will cause the air supply of the air outlets at different positions on the bottom of the air duct to be uneven, thereby causing problems such as low heat utilization rate, slow drying speed, and uneven drying. SUMMARY

[0004] The purpose of the present application is to provide an air duct structure, an air supply system and a clothes drying machine, which can solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] On the one hand, an air duct structure is provided, comprising:

[0007] An air duct is provided with an air inlet on one side;

[0008] An air uniformizing piece is arranged in the air duct; the air uniformizing piece is provided with a first air guiding cavity, the first air guiding cavity has a first air inlet and a first air outlet, the first air inlet is arranged on the leeward side of the air uniformizing piece, and the first air outlet is arranged downward.

[0009] Optionally, the air uniformizing piece is arranged to extend along the length direction of the air duct, and the first air guiding cavity is arranged to extend along the length direction of the air uniformizing piece.

[0010] Optionally, the uniform air device comprises a windward plate and a leeward plate arranged oppositely, and the first air guide cavity is formed between the windward plate and the leeward plate.

[0011] Optionally, the windward surface of the windward plate is an arc surface.

[0012] Optionally, the windward plate comprises a planar plate segment and an arc plate segment, the bottom side of the planar plate segment is connected to the ventilation duct, and the top side of the planar plate segment is connected to the arc plate segment.

[0013] Optionally, the side surface of the arc plate segment towards the first air guide cavity is a circular arc surface.

[0014] Optionally, the distance between the top side of the leeward plate and the arc plate segment is not less than 5 mm.

[0015] Optionally, the planar plate segment is arranged obliquely relative to the leeward plate, so that the first air guide cavity extends in a flared state from the top end of the planar plate segment to the first air outlet.

[0016] Optionally, the included angle between the planar plate segment and the leeward plate is 5-15°.

[0017] Optionally, the windward plate extends in the width direction above the first air outlet by a distance L3, and the width of the first air inlet in the horizontal direction is L4, wherein L3:L4≥1:1.

[0018] Optionally, the uniform air device comprises a support rib, the support rib is arranged at intervals along the length direction of the uniform air device and is connected to the windward plate and the leeward plate, and the first air guide cavity is formed between the support ribs.

[0019] Optionally, the support rib comprises a rib block and a rib plate, a second air guide cavity corresponding to the rib block is arranged on the uniform air device, the second air guide cavity has a second air inlet and a second air outlet, the second air inlet is arranged on the windward side of the uniform air device, and the second air outlet is arranged downward.

[0020] Optionally, the area of the first air inlet is more than three times the area of the second air inlet.

[0021] In another aspect, a ventilation system is provided, comprising the air duct structure and a fan, and the air outlet interface of the fan is connected to the air inlet interface of the ventilation duct.

[0022] In yet another aspect, a clothes drying machine is provided, comprising the air duct structure.

[0023] The beneficial effects of the present application are: the air duct structure, the air supply system and the clothes drying machine can be applied to the clothes drying machine to meet the air supply function of the drying module.

[0024] The air duct structure of the present application can be applied to the clothes drying machine to evenly diffuse the hot air by the air diffusion function of the air duct structure, achieve the purpose of large-area air supply drying, ensure a large air supply area and a uniform air supply effect on the basis of using a small number of fans, expand the drying area on the basis of using a low cost, and ensure a high heat utilization rate, improve the drying speed and the drying uniformity. BRIEF DESCRIPTION OF DRAWINGS

[0025] The present application will be further described in detail below according to the drawings and examples.

[0026] Figure 1 The stereoscopic structure diagram of the air supply system described in the embodiment of the present application;

[0027] Figure 2 The top view of the air supply system described in the embodiment of the present application;

[0028] Figure 3 The cross-sectional view of the air supply system described in the embodiment of the present application;

[0029] Figure 4 The cross-sectional view of the air supply system described in the embodiment of the present application; Figure 3 The enlarged view of the A area in the middle;

[0030] Figure 5 The cross-sectional view of the air supply system described in the embodiment of the present application;

[0031] Figure 6 The cross-sectional view of the air supply system described in the embodiment of the present application; Figure 5 The enlarged view of the B area in the middle;

[0032] Figure 7 The cross-sectional view of the air duct structure described in the embodiment of the present application;

[0033] Figure 8Structure diagram of the air duct structure of the comparative design 1;

[0034] Figure 9 Structure diagram of the air duct structure of the comparative design 2;

[0035] Figure 10 Front air outlet velocity cloud effect diagram of the air duct structure of the comparative design 1;

[0036] Figure 11 Front air outlet velocity cloud effect diagram of the air duct structure of the comparative design 2;

[0037] Figure 12 Front air outlet velocity cloud effect diagram of the air duct structure of the embodiment of the present application;

[0038] Figure 13 Side air outlet velocity cloud effect diagram of the air duct structure of the comparative design 1;

[0039] Figure 14 Side air outlet velocity cloud effect diagram of the air duct structure of the comparative design 2;

[0040] Figure 15 Side air outlet velocity cloud effect diagram of the air duct structure of the embodiment of the present application.

[0041] In the drawings:

[0042] 1, air duct; 11, air inlet; 2, air equalizing member; 21, first air guide cavity; 22, first air inlet; 23, first air outlet; 24, windward plate; 241, planar plate segment; 242, arc-shaped plate segment; 25, leeward plate; 26, support rib; 261, rib block; 2611, second air guide cavity; 262, rib plate; 3, air blower. DETAILED DESCRIPTION

[0043] In order to make the technical problems solved by the present application, the technical solutions adopted and the technical effects reached more clear, the technical solutions of the embodiments of the present application are described in further detail below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0044] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; 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; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and 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 includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0046] In the description herein, it should be understood that the terms "up", "down", "left", "right", and the like orientation or position relationship are only for the convenience of description and simplification of operation, 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 present application. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0047] In the description of the present application, the description referring to the terms "an embodiment", "an example" and the like 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.

[0048] In addition, it should be understood that although the present specification is described in terms of embodiments, each embodiment does not necessarily contain only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

[0049] With the improvement of people's living standards and the continuous improvement of the quality of life, the function and design of the clothes airing machine are also constantly innovating. For example, some intelligent clothes airing machines have the functions of drying, sterilizing, and killing mites, which can effectively remove bacteria and mites on clothes and protect the health of family members.

[0050] The existing drying clothes drying machine with function can only realize partial area drying, which usually adopts local drying by using flood fan, and the drying area is small, and cannot cover the whole area of the clothes drying machine, so when drying clothes, the clothes need to be hung in a specific position. If you want to increase the drying area, you need to increase the number of fans, or use long ventilation duct to blow air, and use the long strip-shaped air outlet at the bottom of the long ventilation duct to realize large-area air outlet. However, if the fan is increased, the increase of the fan will increase the weight and part cost of the clothes drying machine; if the long ventilation duct is directly used for air guiding, because the fan blows air to the long ventilation duct too concentratedly, it will cause the air outlet at different positions at the bottom of the ventilation duct to have uneven air volume, and further cause the problems of low heat utilization rate, slow drying speed and uneven drying.

[0051] To solve the above problems, the present application provides a wind channel structure, which can diffuse and transport the drying hot air provided by a single fan to the clothes drying rack below, thereby achieving the purposes of expanding the drying area, improving the drying uniformity and optimizing the drying effect on the basis of using a small number of fans.

[0052] The wind channel structure of the embodiment is specifically applied to a clothes drying machine, and for the convenience of understanding, the application state of the wind channel structure in the clothes drying machine is explained first: the clothes drying machine includes a main machine and a clothes drying rack, the clothes drying rack is suspended below the main machine, and a drying module is integrated in the main machine, which includes a fan, a heater and the like. The wind channel structure of the embodiment can be combined with the drying module, which is specifically connected with the fan, the fan blows air, the air is heated by the heater to form drying hot air, the drying hot air is diffused in the wind channel structure and blown out from the air outlet at the bottom of the wind channel structure, the downward blown drying hot air blows to the clothes suspended below the clothes drying rack, thereby achieving the purpose of drying the clothes.

[0053] Specifically, referring to Figures 1-7 , the wind channel structure of the embodiment includes:

[0054] The ventilation duct 1 is provided with an air inlet interface 11 on one side;

[0055] The air uniformizing piece 2 is arranged in the ventilation duct 1; the air uniformizing piece 2 is provided with a first air guiding cavity 21, the first air guiding cavity 21 has a first air inlet 22 and a first air outlet 23, the first air inlet 22 is arranged at the leeward side of the air uniformizing piece 2, and the first air outlet 23 is arranged downward.

[0056] In the application of the clothes drying machine, since the clothes are hung on the clothes drying rods of the drying rack, the clothes are arranged along the length direction of the clothes drying rods. In order to adapt to the drying structure and realize full use of the drying heat, when being specifically arranged, the ventilation duct 1 should be arranged along the extension direction of the lower clothes drying rod, and the first air outlet 23 of the air uniformizing piece 2 should also be arranged along the extension direction of the clothes drying rod, so that the drying hot air can be uniformly blown to the clothes hung on the lower clothes drying rod through the first air outlet 23 during work.

[0057] It can be understood that, in the air duct structure of the embodiment of the present application, in addition to the air inlet 11 and the air outlet (such as the first air outlet 23) for air outlet, the ventilation duct 1 should be arranged in a sealed state at other positions to avoid unnecessary air leakage, Figures 1-7 In the structure shown, the cover plate at the top of the ventilation duct 1 is not shown in order to facilitate the display of the internal structure. In actual application, the top side of the ventilation duct 1 should be closed by arranging a cover plate.

[0058] When the air duct structure in the embodiment of the present application is applied to the clothes drying machine, the air inlet 11 on one side of the ventilation duct 1 can be connected to the fan 3, the air uniformizing piece 2 is arranged in the ventilation duct 1, the back side of the air uniformizing piece 2 is provided with the first air inlet 22, and the bottom side is provided with the downward first air outlet 23. When the drying hot air is blown into the ventilation duct 1 from the air inlet 11, the drying hot air will blow to the windward side of the air uniformizing piece 2, and under the blocking action of the air uniformizing piece 2, the drying hot air will be uniformly diffused, so that the drying hot air can be uniformly spread in the entire ventilation duct 1. After the drying hot air passes around the air uniformizing piece 2 upwards, it will blow to the side of the ventilation duct 1 facing the first air outlet 23, then turn back to blow to the first air outlet 23, pass through the first air guide cavity 21 of the air uniformizing piece 2, and finally blow out downward from the first air outlet 23 at the bottom side.

[0059] When the air duct structure of the present scheme is applied to the clothes drying machine, the hot air can be uniformly diffused by using the air uniformizing and diffusing function of the air duct structure, the purpose of large-area air outlet drying can be achieved, the large air outlet area and the uniform air outlet effect can be ensured on the basis of using a small number of fans 3, the drying area can be expanded on the basis of using a low cost, and the heat utilization rate, the drying speed and the drying uniformity can be improved.

[0060] It should be noted that the arrangement of the air uniformizing piece 2 in the ventilation duct 1 in the embodiment of the present application is based on the inventive concept of the utility model and the verification of multiple experiments, and has a significant technical effect. In order to verify the creativity of the air duct structure of the embodiment of the present application, two other comparative schemes (i.e. comparative design 1 and comparative design 2) designed by the inventor in the process of the utility model are provided for comparison:

[0061] Referring to Figure 8In the comparative design 1, the air equalizing member 2 is also provided, and the air inlet of the air equalizing member 2 is arranged at the top side of the air equalizing member 2.

[0062] Referring to Figure 9 In the comparative design 2, the air equalizing member 2 is also provided, and the air inlet of the air equalizing member 2 is arranged at the windward side of the air equalizing member 2.

[0063] Figures 10-12 The front (i.e. the elevation parallel to the length direction of the ventilation duct 1) air outlet effect diagrams of the air duct structures of the three schemes are shown:

[0064] Figure 10 The air outlet effect diagram of the comparative design 1 is shown, and it can be clearly seen from the diagram that the air outlet is concentrated at both ends of the ventilation duct 1, the air outlet is weak in the middle region, and the air outlet is inclined to the tail end (right side), obviously, the uniformity of the air outlet effect is poor;

[0065] Figure 11 The air outlet effect diagram of the comparative design 2 is shown, and it can be clearly seen from the diagram that the air outlet is concentrated at the tail end (right side) of the ventilation duct 1, the air outlet is weak at the front end (left side), and the air outlet is inclined to the tail end (right side), and the inclination is more obvious than that of the comparative design 1, obviously, the uniformity of the air outlet effect of this scheme is also poor;

[0066] Figure 12 The air outlet effect diagram of the air duct structure provided by the embodiment of the application is shown, and it can be clearly seen from the diagram that the air outlet is uniform at each position along the length direction of the ventilation duct 1, and there is no obvious inclination of the air outlet.

[0067] From the above comparison, it can be seen that in the front direction, the uniformity of the air outlet effect of the air duct structure provided by the embodiment of the application is the best, and the verticality of the air direction downward is better.

[0068] Figures 13-15 The side (i.e. the elevation perpendicular to the length direction of the ventilation duct 1) air outlet effect diagrams of the air duct structures of the three schemes are shown:

[0069] Figure 13 The air outlet effect diagram of the comparative design 1 is shown, and it can be clearly seen from the diagram that the drying hot air blows vertically downward from the air outlet, the hot air directly blows to the top surface of the airing rod, and is affected by the wall-attached flow of the airing rod and the single-side flow direction of the main flow, so that the airflow is finally deviated to the outside (left side).

[0070] Figure 14 The air outlet effect diagram of the comparative design 2 is shown, and it can be seen from the diagram that, due to the influence of the flow direction and the influence of the air inlet at the right side of the air outlet, the air outlet is mostly on the airing rod and is divided into two airflows, and most of them flow above the airing rod.

[0071] Figure 15The air outlet effect diagram of the air to the structure is shown, from which it can be seen that most of the air outlet is evenly dispersed to both sides on the inner side (right side) of the clothes drying rod, and the air flow downward can fully contact the clothes hung on the clothes drying rod, and a small part of the air flow flows above the clothes drying rod under the action of the clothes drying rod.

[0072] From the above comparison, it can be seen that in the lateral direction, the air outlet of the air duct structure provided by the embodiment of the present application can be more fully blown to the clothes hung on the clothes drying rod below, and the drying effect is the best.

[0073] In an embodiment, the air uniformizing member 2 is arranged to extend along the length direction of the ventilation duct 1, and the first air guiding cavity 21 is arranged to extend along the length direction of the air uniformizing member 2.

[0074] In a specific application, the ventilation duct 1 is arranged to extend along the length direction of the clothes drying rod, and correspondingly, the air uniformizing member 2 and the first air guiding cavity 21 both extend along the length direction of the ventilation duct 1. The drying hot air can be more evenly distributed in the entire ventilation duct 1, so that the hot air is more fully diffused and mixed in the ventilation duct 1, which ensures that the hot air blown from the first air outlet 23 can uniformly cover the clothes on the entire clothes drying rod below, thereby avoiding the problem of uneven drying.

[0075] In an embodiment, referring to Figure 4 , the air uniformizing member 2 includes a windward plate 24 and a leeward plate 25 arranged oppositely, and the first air guiding cavity 21 is formed between the windward plate 24 and the leeward plate 25.

[0076] The design of the windward plate 24 and the leeward plate 25 is relatively simple, easy to manufacture and process, and at the same time, due to the relative arrangement between them, the cleaning and maintenance of the first air guiding cavity 21 become easier.

[0077] Optionally, the windward plate 24 and the leeward plate 25 are integrally formed on the bottom wall of the ventilation duct 1.

[0078] In an embodiment, the windward surface of the windward plate 24 is an arc surface.

[0079] The design of the arc surface makes the hot air flow more smoothly when it contacts the windward plate 24, reducing the wind resistance caused by the right angle or acute angle turning, which helps to improve the flow efficiency of the hot air, so that more hot air can enter the first air guiding cavity 21 after passing through the windward plate 24 more quickly and blow to the clothes evenly. The design of the arc surface can also reduce the noise generated by the collision or friction of the hot air in the flow process, which helps to improve the quietness and comfort of the clothes drying machine during use.

[0080] In an embodiment, the windward plate 24 comprises a planar plate segment 241 and an arc-shaped plate segment 242, the bottom side of the planar plate segment 241 is connected to the ventilation duct 1, and the top side is connected to the arc-shaped plate segment 242.

[0081] Specifically, the arc-shaped plate segment 242 is on the top, and the planar plate segment 241 is on the bottom. The drying hot air enters the first air guide cavity 21 through the first air inlet 22 and first encounters the arc-shaped plate segment 242. The arc-shaped inner wall surface of the arc-shaped plate segment 242 can effectively guide and drain the transverse or oblique entering airflow downward. This design ensures that the airflow can quickly adjust the direction after entering the first air guide cavity 21 and flow downward along the inner wall surface of the arc-shaped plate segment 242. Subsequently, the airflow passes through the area between the planar plate segment 241 and the leeward plate 25, is further arranged and uniformly distributed, and then is smoothly blown downward.

[0082] The design of the arc-shaped plate segment 242 in the embodiment not only helps to guide the airflow direction, but also makes the airflow more uniformly dispersed during the flow process through the arc-shaped surface. After the airflow passes through the arc-shaped plate segment 242, it is more uniformly distributed in the area between the planar plate segment 241 and the leeward plate 25, thereby improving the uniformity of the hot air blown out from the first air outlet 23, and also avoiding the loss of airflow velocity, ensuring sufficient air outlet velocity. In addition, the design of the arc-shaped plate segment 242 also helps to reduce the noise and vibration generated by the collision or friction of the airflow during the flow process, which helps to improve the quietness and stability of the clothes drying machine during use.

[0083] In an embodiment, the side of the arc-shaped plate segment 242 facing the first air guide cavity 21 is a circular arc surface.

[0084] The design of the circular arc surface makes the arc-shaped plate segment 242 more smooth when guiding the airflow, reducing the airflow disturbance caused by shape mutation, which helps to ensure that the airflow can smoothly flow downward along the inner wall surface of the arc-shaped plate segment 242 after entering the first air guide cavity 21, thereby improving the stability and uniformity of the airflow.

[0085] In an embodiment, the top side of the leeward plate 25 is located at the center of the circular arc surface of the arc-shaped plate segment 242.

[0086] Specifically, referring to Figure 7 , the top side of the leeward plate 25 is located at the center of the circular arc surface of the arc-shaped plate segment 242, that is, the distance from each point on the inner circular arc surface of the arc-shaped plate segment 242 to the top side of the leeward plate 25 is the same, that is Figure 7 L1 = L2 in the above structure, after the drying hot air enters through the first air inlet 22, it will pass through a first air guide cavity 21 with a constant width, which can ensure the uniformity of the flow velocity of the drying hot air after entering the first air guide cavity 21.

[0087] In an embodiment, the distance between the top side of the leeward plate 25 and the arc-shaped plate segment 242 is not less than 5 mm.

[0088] That is, Figure 7 L1=L2≥5 mm in the above formula, sufficient width is provided to ensure sufficient air flow, and thus sufficient heat is delivered to dry the clothes in a short time.

[0089] In an embodiment, the planar plate segment 241 is arranged obliquely relative to the leeward plate 25, so that the first air guide cavity 21 extends in a flared state from the top end of the planar plate segment 241 to the first air outlet 23.

[0090] When the air flow flows from the arc-shaped plate segment 242 into the planar plate segment 241, due to the flared design of the first air guide cavity 21, the air flow can gradually spread out in the area between the planar plate segment 241 and the leeward plate 25, thereby guiding the drying hot air to spread downward and inward, achieving the purpose of guiding the air flow to avoid the clothes drying rod, so that the air flow can be more directly blown to the clothes below. For details, please refer to Figure 15 the obtained effect.

[0091] In an embodiment, the included angle between the planar plate segment 241 and the leeward plate 25 is 5-15°.

[0092] That is, Figure 7 5°<∠α<15° in the above formula. Through many experiments of the inventor, it is found that the included angle controlled within the range can achieve the purpose of spreading the air flow, and also avoid the problem of waste of heat caused by too large spreading angle.

[0093] In an embodiment, the windward plate 24 extends in the width direction above the first air outlet 23 by a distance L3, and the width of the first air inlet 22 in the horizontal direction is L4, wherein L3:L4≥1:1.

[0094] That is, Figure 7 L3:L4≥1:1 in the above formula. In this way, the influence of the first air inlet 22 on the air flow flowing over the top of the windward plate 24 can be reduced, and the influence of the inertial flow caused by the air flow flowing from one side can also be reduced.

[0095] In an embodiment, referring to Figure 6 , the air uniformizing member 2 comprises a support rib 26, the support rib 26 is arranged in the length direction of the air uniformizing member 2 and connects the windward plate 24 and the leeward plate 25, and the first air guide cavity 21 is formed between each support rib 26.

[0096] The support rib 26 significantly enhances the overall structural stability of the air uniformizing member 2, so that the entire air uniformizing member 2 is more solid and durable when bearing the pressure and vibration caused by the flow of air.

[0097] In an embodiment, the support rib 26 comprises a rib block 261 and a rib plate 262, and the air uniformizing member 2 is provided with a second air guide cavity 2611 corresponding to the rib block 261, the second air guide cavity 2611 has a second air inlet and a second air outlet, the second air inlet is arranged on the windward side of the air uniformizing member 2, and the second air outlet is arranged downward.

[0098] Based on the structure of the rib block 261, the second air guide cavity 2611 is arranged therein, and the second air outlet on the windward side of the air uniformizing member 2 is arranged, a small part of the airflow can be guided outward by the second air guide cavity 2611, and the airflow can be guided inward by the structure of the first air guide cavity 21, so that the airflow can be guided to the inner and outer sides of the clothes drying rod at the same time, and the simultaneous drying function of the inner and outer areas of the clothes can be realized.

[0099] In an embodiment, the area of the first air inlet 22 is more than three times the area of the second air inlet.

[0100] Specifically, in the clothes drying machine, two clothes drying rods are generally arranged side by side, and two rows of clothes can be hung on the two clothes drying rods at the same time. It can be understood that the airflow on the opposite sides (i.e. the inner sides) of the two rows of clothes is slower, so the drying speed is slower; and the airflow on the opposite sides (i.e. the outer sides) of the two rows of clothes is faster, so the drying speed is faster. In the present scheme, the first air guide cavity 21 mainly guides the airflow inward to dry the inner sides of the clothes, and the second air guide cavity 2611 mainly guides the airflow outward to dry the outer sides of the clothes. Since the inner sides of the clothes dry slower, the first air inlet 22 is larger in area, which can distribute a larger flow of hot air to speed up the drying speed of the inner sides of the clothes, and ultimately achieve the purpose of drying the entire piece of clothes.

[0101] On the other hand, a kind of air supply system is provided, comprising the air duct structure and fan 3 described above, and the air outlet interface of the fan 3 is connected to the air inlet interface 11 of the ventilation duct 1.

[0102] In the working process of the air supply system described in the present embodiment, the airflow is conveyed into the ventilation duct 1 under the drive of the fan 3, and is blown downward from the first air outlet 23 after being diffused by the air uniformizing member 2, achieving the purpose of large-area air outlet drying. It can ensure a large enough air outlet area and a uniform enough air outlet effect on the basis of using a smaller number of fans 3, expand the drying area on the basis of using a lower cost, and at the same time ensure a higher heat utilization rate, improve the drying speed and drying uniformity.

[0103] Specifically, a heater is arranged at the air inlet interface 11, which can heat the air blown out by the fan 3.

[0104] Preferably, the heating device in the embodiments of the present application is a PTC heater. The PTC heater is a new type of heating element. The working principle of the PTC heater is based on the positive temperature coefficient characteristic of PTC ceramic material. When an electric current passes through the PTC ceramic, the resistance thereof will increase with the increase of temperature. When the temperature reaches a certain specific value (Curie temperature), the resistance will sharply increase, and the electric current will decrease, so that the power of the PTC element is automatically adjusted to maintain a constant temperature. The PTC heater has an overheating protection function. When the temperature is too high, the resistance will automatically increase to limit the electric current, thereby preventing the occurrence of overheating phenomenon.

[0105] Further, the air supply system in the embodiments of the present application further comprises a plasma generator, which is arranged in the air duct 1. The plasma generator is a device capable of generating plasma. Plasma is called the "fourth state of matter" and is a highly ionized gas containing a large number of free electrons, ions and other charged particles. Plasma has strong chemical activity and can react with a variety of substances to produce oxidation, reduction, decomposition and other effects. The high-energy electrons and active oxygen ions in the plasma can effectively kill harmful microorganisms such as bacteria, viruses and mites on the clothes.

[0106] In another aspect, a clothes drying machine is provided, which comprises the air duct structure described above.

[0107] By arranging two air duct structures in the clothes drying machine, the output of drying air can be achieved around the clothes drying machine, and the full-area drying function of the clothes drying machine can be achieved by using only two fans. The reduction of the number of fans can reduce the overall weight and the cost of parts of the clothes drying machine. By arranging the two air duct structures in a central symmetry manner, two air duct structures with the same structure can be used, thereby reducing the types of parts and the installation difficulty, and improving the universality of the air duct structure.

[0108] The technical principles of the present application are described above in combination with specific embodiments. These descriptions are only for the purpose of explaining the principles of the present application and cannot be interpreted in any way as a limitation on the scope of protection of the present application. Based on the explanations herein, other specific embodiments of the present application can be conceived by those skilled in the art without requiring creative efforts, and these embodiments will fall within the scope of protection of the present application.

Claims

1. An air duct structure characterized by, The application relates to a ventilation duct structure. The ventilation duct structure comprises: a ventilation duct provided with an air inlet on one side; and an air equalizing element arranged in the ventilation duct, wherein the air equalizing element is provided with a first air guide cavity, the first air guide cavity is provided with a first air inlet and a first air outlet, the first air inlet is arranged on the leeward side of the air equalizing element, and the first air outlet is arranged downward. The air equalizing element extends along the length direction of the ventilation duct, and the first air guide cavity extends along the length direction of the air equalizing element.

2. The air duct structure according to claim 1, wherein The air equalizing element comprises a windward plate and a leeward plate arranged oppositely, and the first air guide cavity is formed between the windward plate and the leeward plate.

3. The air duct structure according to claim 2, wherein The windward surface of the windward plate is an arc surface.

4. The air duct structure according to claim 3, wherein The windward plate comprises a planar plate segment and an arc plate segment, the bottom side of the planar plate segment is connected to the ventilation duct, and the top side is connected to the arc plate segment.

5. The air duct structure according to claim 4, wherein The side surface of the arc plate segment facing the first air guide cavity is a circular arc surface.

6. The air duct structure according to claim 5, wherein The distance between the top side of the leeward plate and the arc plate segment is not less than 5 mm.

7. The air duct structure according to claim 6, wherein The planar plate segment is arranged obliquely relative to the leeward plate, so that the first air guide cavity extends in a flared state from the top end of the planar plate segment to the first air outlet.

8. The air duct structure according to claim 5, wherein The included angle between the planar plate segment and the leeward plate is 5-15 degrees.

9. The air duct structure according to claim 8, wherein The windward plate extends in the width direction above the first air outlet by a distance L3, and the width of the first air inlet in the horizontal direction is L4, wherein L3:L4>=1:

1.

10. The air duct structure according to claim 3, wherein The air equalizing element comprises support ribs arranged at intervals along the length direction of the air equalizing element and connected to the windward plate and the leeward plate, and the first air guide cavity is formed between the support ribs.

11. The air duct structure according to claim 3, wherein The support rib comprises a rib block and a rib plate, the air equalizing element is provided with a second air guide cavity at a position corresponding to the rib block, the second air guide cavity is provided with a second air inlet and a second air outlet, the second air inlet is arranged on the windward side of the air equalizing element, and the second air outlet is arranged downward.

12. The air duct structure according to claim 11, wherein The area of the first air inlet is more than three times the area of the second air inlet.

13. The air duct structure according to claim 12, wherein The application further relates to a fan provided with the ventilation duct structure and the air inlet of the fan is connected to the air inlet of the ventilation duct.

14. An air supply system characterized by, The application further relates to the ventilation duct structure.

15. A clothes drying machine characterised in that, ​

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