Hot air device and drying equipment

Abstract

The embodiment of the utility model relates to the technical field of household appliances, and discloses a hot air device and drying equipment, the hot air device comprises a shell, a fan module and a heating module, the fan module and the heating module are arranged in the shell; the fan module comprises a shell and an impeller piece arranged in the shell, and a first air inlet and a first air outlet are formed in the shell; a cavity is formed in the impeller part, and the multiple blades incline in the radial direction of the impeller and are arranged around the cavity so that airflow can be collected in the cavity from the first air inlet. The first air outlet inclines in the radial direction of the impeller, and the first air outlet communicates with a second air inlet of the heating module, so that the impeller piece rotates to output airflow in the cavity from the first air outlet along the blades, and the airflow is heated through the heating module from the second air inlet; the first air outlet is smaller than the first air inlet. High-speed and uniform airflow output by the impeller part and the first air inlet larger than the first air outlet makes large-area contact with clothes, and the problem that the clothes are locally overheated is solved.

Description

Technical Field

[0001] This utility model relates to the field of home appliance technology, specifically to a hot air device and drying equipment. Background Technology

[0002] Because clothing obstructs airflow during drying, most dryers on the market use direct-flow fans. These fans deliver high-pressure air, allowing the airflow to penetrate the clothing and remove moisture. However, due to the structure of the direct-flow fan, maintaining high pressure can lead to uneven airflow distribution, varying air volume and velocity. This results in uneven heating of the clothes, causing localized overheating or incomplete drying. Summary of the Invention

[0003] In view of the above problems, this utility model provides a hot air device and drying equipment to solve the problem of uneven heating of clothes during drying caused by uneven airflow distribution in the prior art.

[0004] According to one aspect of the present invention, a hot air device is provided, the hot air device comprising: a housing, a fan module, and a heating module, wherein the fan module and the heating module are disposed within the housing; the fan module includes an outer shell and a columnar impeller disposed within the outer shell, the two ends of the impeller being rotatably connected to the outer shell in the axial direction, the outer shell being fixedly connected to the housing, and having a first air inlet and a first air outlet on the outer shell, the first air outlet facing the heating module;

[0005] The housing is provided with an airflow inlet and an airflow outlet, and the airflow inlet is connected to the first air inlet; the impeller has a cavity inside, and multiple blades are arranged at intervals around the cavity. The multiple blades are radially inclined relative to the impeller so that the windward surface of the multiple blades faces the cavity, so as to drive the airflow to gather in the cavity from the first air inlet and then flow out from the first air outlet, blow it towards the heating module for heating, and then flow out from the airflow outlet.

[0006] In one alternative embodiment, a support member is provided inside the housing, the support member connecting the housing and the outer shell respectively, to support the fan module suspended inside the housing.

[0007] In one alternative embodiment, the heating module is sealed to the inner wall of the housing, dividing the interior of the housing into a hot flow chamber and a cold flow chamber. The fan module is installed in the cold flow chamber, and the cold flow chamber is connected to the external airflow through the airflow inlet. The hot flow chamber is connected to the heating module through the second air outlet of the heating module, so that the heated airflow flows to the airflow outlet through the second air outlet.

[0008] In one alternative embodiment, the heating module includes a heating element and a mounting bracket; the mounting bracket is sealed to the inner wall of the housing.

[0009] The heating element is mounted on the mounting bracket. The second air inlet of the heating element is located at one end of the heating element near the impeller, and the second air outlet is located at one end of the heating element away from the impeller. The heating element has a channel for airflow to flow from the second air inlet to the second air outlet, so that the airflow can contact the heating element and enter the heat flow chamber from the second air outlet.

[0010] In one alternative embodiment, the housing includes a plurality of sidewalls and a top wall surrounding the heat flow cavity, the sidewalls surrounding the periphery of the heating module, the top wall being located on the opposite side of the heating module, a plurality of airflow outlets being disposed on at least one of the sidewalls of the heat flow cavity, and an air guide being provided between the top wall of the heat flow cavity and the heating module, the air guide being used to guide the airflow in the heat flow cavity to the airflow outlet.

[0011] In one alternative embodiment, the airflow outlet is provided on one side wall of the heat flow cavity, and the air guide is disposed near the top wall of the heat flow cavity at one end near the airflow outlet, and away from the top wall of the heat flow cavity at the other end away from the airflow outlet.

[0012] In one alternative embodiment, airflow outlets are respectively provided on the two sidewalls opposite to the hot flow cavity;

[0013] The air guide has a V-shaped structure, with its two open ends positioned close to the sidewall where the airflow outlet is located and away from the heating module, while the tip of the air guide is positioned close to the heating module.

[0014] In one alternative embodiment, a pair of support plates are disposed opposite to each other on the mounting bracket, the support plates being connected between the air guide and the support plate to support and fix the air guide.

[0015] In one alternative embodiment, several of the airflow outlets are disposed on the top wall of the hot flow cavity.

[0016] In one alternative embodiment, the structure of the airflow outlet includes: a strip structure and a circular structure.

[0017] According to another aspect of the present invention, a drying device is provided, comprising: the hot air device and the drying device provided in the first aspect above, wherein the drying device has a drying zone inside, and the hot air device is installed at the bottom of the drying zone to generate hot air to dry the clothes in the drying zone.

[0018] This utility model embodiment utilizes a hot air device and drying equipment. By employing a streamlined shell structure, the heating module and fan module are installed inside the shell. Furthermore, by isolating the space inside the shell into a hot flow chamber and a cold flow chamber using the heating module, the internal structure of the shell is simplified. The fan module is suspended in the cold flow chamber, preventing the vibration of the fan module from affecting the installation stability of the shell. Through the rational layout of the heating module and fan module within the shell, the internal structure of the shell is simplified, achieving a compact design of the shell.

[0019] After the airflow enters the cavity of the high-speed rotating impeller through the first air inlet, it is continuously collected in the cavity of the impeller, pressurized and accelerated, and then sent to the heating module through the first air outlet for heating. The high-speed rotation of the impeller causes the high-pressure, high-speed airflow to flow out of the first air outlet. After being heated by the pressurized and accelerated airflow, it comes into contact with the clothes to be dried over a large area, so that the clothes are heated evenly. The high-speed airflow can drive the clothes to rotate, avoiding the problem of local overheating or local undrying caused by uneven heating. In addition, the high-speed airflow can also accelerate the evaporation of moisture on the surface of the clothes and carry away the moisture.

[0020] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0021] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0022] Figure 1 A perspective view of the hot air device provided in Embodiment 1 of the present invention is shown.

[0023] Figure 2 An exploded view of the hot air device provided in Embodiment 1 of the present invention is shown.

[0024] Figure 3 An exploded view of the hot air device provided in Embodiment 1 of the present invention is shown.

[0025] Figure 4 A schematic diagram of the fan module in the hot air device provided in Embodiment 1 of the present invention is shown.

[0026] Figure 5 A schematic diagram of the heating module in the hot air device provided in Embodiment 1 of the present invention is shown.

[0027] Figure 6 A cross-sectional view of the hot air device provided in Embodiment 1 of the present invention is shown.

[0028] Figure 7 A cross-sectional view of the hot air device provided in Embodiment 1 of the present invention is shown.

[0029] Figure 8 A cross-sectional view of the hot air device provided in Embodiment 1 of the present invention is shown.

[0030] Figure 9 A cross-sectional view of the hot air device provided in Embodiment 1 of the present invention is shown.

[0031] Figure 10 A cross-sectional view of the hot air device provided in Embodiment 1 of the present invention is shown.

[0032] Figure 11 A schematic diagram of the drying equipment provided in Embodiment 2 of the present invention is shown.

[0033] The reference numerals in the detailed embodiments are as follows:

[0034] 100. Drying device; 200. Hot air device; 21. Shell; 211. Support component; 212. Airflow inlet; 213. Airflow outlet; 214. Hot flow chamber; 2141. Top wall; 215. Cold flow chamber; 216. Columnar protrusion; 22. Fan module; 221. Impeller component; 2211. Cavity; 2212. Blade; 2213. Impeller; 222. Shell; 223. First air inlet; 224. First air outlet; 23. Heating module; 231. Heating component; 232. Mounting bracket; 2321. Support plate; 233. Second air inlet; 234. Second air outlet; 24. Air guide component; 241. Open end; 242. Tip. Detailed Implementation

[0035] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of protection of the present invention. Example 1

[0036] Please see Figures 1-4 , Figure 1 An embodiment of the hot air device 200 of this utility model is shown. The hot air device 200 includes: a housing 21, a fan module 22, and a heating module 23. The hot air device 200 is installed at the bottom of the drying device 100. The hot air device 200 is used to heat the airflow and send it into the drying chamber where the clothes to be dried are placed. The heated airflow flows out of the drying chamber and makes large-area contact with the surface of the clothes. At the same time, the hot airflow rises and carries away moisture through the clothes, thus drying them.

[0037] The fan module 22 includes a housing 222 and a columnar impeller 221 disposed within the housing 222. The two ends of the impeller 221 are rotatably connected to the housing 222 in the axial direction. The housing 222 is fixedly connected to the housing 21. The housing 222 is provided with a first air inlet 223 and a first air outlet 224. The housing 21 is provided with an airflow inlet 212, which is connected to the first air inlet 223. The impeller 221 has a cavity 2211 inside. Multiple blades 2212 are arranged at intervals around the cavity 2211. The multiple blades 2212 are radially inclined relative to the impeller 221 so that the windward surface of the multiple blades 2212 faces the cavity 2211. This drives the airflow from the first air inlet 223 to converge in the cavity 2211 along the blades 2212 and then flow out from the first air outlet 224. After being heated by the heating module 23, the airflow flows out from the air outlet 213.

[0038] The first air outlet 224 is oriented toward the heating module 23: the first air outlet 224 and the second air inlet 233 of the heating module 23 are connected so that the impeller 221 rotates at high speed to output the airflow in the cavity 2211 along the blades 2212 from the first air outlet 224, and enter the heating module 23 from the second air inlet 233. After being heated, the airflow flows out from the air outlet 213 of the housing 21. The first air outlet 224 is smaller than the first air inlet 223, including the area or size of the first air outlet 224 being smaller than the first air inlet 223.

[0039] In this embodiment, after the airflow enters the cavity 2211 of the high-speed rotating impeller 221 through the first air inlet 223, it is continuously collected in the cavity 2211 of the impeller 221 and pressurized and accelerated before being heated by the heating module 23 through the first air outlet 223. The high-speed rotation of the impeller 221 causes the airflow with high pressure and high speed to flow out from the first air outlet 223. At the same time, the airflow flowing out from the first air outlet 223 is further accelerated by the setting that the first air inlet 223 is larger than the first air outlet 224. After being heated by the pressurized and accelerated airflow, the clothes to be dried come into contact with a large area, so that the clothes to be dried are heated evenly. The high-speed airflow can drive the clothes to rotate, avoiding the problem of local overheating or local undrying of the clothes due to uneven heating. In addition, the high-speed airflow can also accelerate the evaporation of moisture on the surface of the clothes and carry away the moisture.

[0040] The housing 21 has a columnar structure with a hollow interior for airflow. The fan module 22 and heating module 23 are installed inside the housing 21. A support member 211 is provided inside the housing 21, and another support member 221 connects the housing 21 and the outer shell 222. The lower end of the support member 211 is fixedly connected to the inner wall of the housing 21, and the side wall of the support member 211 is fixedly connected to the outer shell 222 to support the fan module 22, which is suspended within the housing 21. This suspension allows airflow to enter the fan module 22 smoothly, while also preventing direct contact between the fan module 22 and the housing 21, thus avoiding direct vibration of the fan module 22 from affecting the installation stability of the housing 21. The heating module 23 is located at the upper end of the support member 211 and connected to it, ensuring a tight connection between the upper end of the heating module 23 and the interior of the housing 21.

[0041] like Figure 2 - Figure 4 As shown, the impeller component 221 is placed inside the housing 222 and both ends of the impeller component 221 pass through the housing 222 along the central axis and are fixed on the housing 222, supporting the impeller component 221 to rotate at high speed around its central axis. The side of the housing 222 away from where the impeller component 221 is installed is connected to the support component 211 of the housing 21. The impeller component 221 includes multiple blades 2212, and the impeller component 221 has a cavity 2211 inside. That is, the blades 2212 are a certain distance away from the central axis of the impeller component 221, so that the airflow enters the cavity 2211 from the first air inlet 223 along the blades 2212. Due to the high-speed rotation of the impeller component 221, the airflow is driven to rotate in the cavity 2211, and the high-speed rotating blades 2212 can continuously draw the airflow from the first air inlet 223 into the cavity, thereby pressurizing and accelerating the airflow. The length of the blades 2212 is parallel to the central axis of the impeller component 221, and the blades 2212 are inclined radially along the impeller and arranged around the cavity 2211.

[0042] A wide first air inlet 223 is provided on the side of the outer casing 222 away from the support member 211, and a first air outlet 224 is provided on the side of the outer casing 222 near the support member 211. When the impeller 221 rotates at high speed, a large amount of airflow is quickly gathered in the cavity 2211 of the impeller 221 through the first air inlet 223. As the airflow gathers, the pressure increases, causing the airflow to flow out from the first air outlet 224 along the blades 2212 near the first air outlet 224 during the high-speed rotation of the impeller 221. The first air outlet 224 is inclined radially along the impeller, which allows the airflow to flow out along the blades 2212. Since the airflow velocity direction is the same as or similar to the channel wind direction of the first air outlet 224, it avoids a large impact on the outer casing 222, allowing the airflow to flow smoothly from the first air outlet 224 to the second air inlet 233 of the heating module 23 and then enter the heating module 23 for heating.

[0043] In one embodiment of this utility model, the lengths of the first air inlet 223 and the first air outlet 224 are the same as or close to the length of the blades 2212 of the impeller 221, and the width of the first air outlet 224 is smaller than the width of the first air inlet 223. The wide first air inlet 223 ensures that a large amount of airflow quickly gathers into the cavity 2211 of the impeller 221 when the impeller 221 rotates at high speed, and the high-speed rotation of the impeller 221 can further increase the speed and pressure of the airflow. The relatively narrow first air outlet 224 further enhances the speed and pressure of the airflow flowing out of the first air outlet 224. At the same time, the length of the first air outlet 224 is the same as or close to the length of the blades 2212, outputting a uniform airflow and ensuring uniform air pressure, air volume, and air speed of the airflow in contact with clothing.

[0044] The length of the blade 2212 is the same as or close to the length of the impeller 221 in the direction of its central axis. That is, the two ends of the blade 2212 are fixed to the impeller set in the housing 2222. The regular arrangement of multiple long strip blades 2212 can make a large amount of airflow enter the cavity 2211 of the impeller 221 from the first air inlet 223 at the same time as the impeller 221 rotates, and can also make a large amount of airflow flow out from the first air outlet 224 at the same time.

[0045] In another embodiment of this utility model, such as Figure 4As shown, in the central axis direction of impeller component 221, multiple impellers 2213 are connected and fixed in series in the central axis direction to avoid the blades 2212 being subjected to large forces for a long time during high-speed rotation due to their length, thus affecting the service life of the blades 2212. The number of blades 2212 on each impeller is the same, and the installation position is the same, ensuring that the airflow direction entering and leaving the cavity 2211 in each impeller 2213 is consistent.

[0046] In this embodiment of the invention, an airflow outlet 213 is provided on the housing 21 for airflow to exit the housing 21; for example Figure 3 As shown, a columnar protrusion 216 extends outward from the side of the housing 21, and the internal space of the columnar protrusion 216 is connected to the internal space of the housing 21. The heating module 23 is sealed to the inner wall of the housing 21, dividing the interior of the housing 21 into a hot flow chamber 214 and a cold flow chamber 215. The connection between the housing 21 and the inner wall of the columnar protrusion 216 is tightly abutted against the upper end of the heating module 23, preventing airflow from entering the hot flow chamber 214 through any means other than the second air outlet 234. The heating module 23 and the fan module 22 are located in the cold flow chamber 215. Through reasonable arrangement, the fan module 22 and the heating module 23 in the cold flow chamber 215 can operate normally, while avoiding the housing 21 occupying too much space and affecting its installation in the drying device 100. The cold air chamber 215 is connected to the external airflow through the airflow inlet 212 to ensure that the external airflow can smoothly enter the cold air chamber 215; the hot air chamber 214 is connected to the heating module 23 through the second air outlet 234 of the heating module 23, so that the heated airflow flows through the second air outlet 234 to the airflow outlet 213 and comes into contact with the clothes to be dried outside the airflow outlet 213. The hot air chamber 214 is connected to the drying chamber of the drying device 100 where the clothes are placed through the airflow outlet 213, and the heated airflow flows out of the hot air chamber 214 through the airflow outlet 213 to dry the clothes to be dried.

[0047] The airflow inlet 212 is provided on at least one end face in the length direction of the housing 21. The airflow inlet 212 is connected to the cold flow cavity 215, which allows external airflow to flow into the cold flow cavity 215 through the airflow inlet 212 and into the cavity 2211 of the impeller 221 from the first air inlet 223. When the airflow inlet 212 is provided on at least one end face of the housing 21, it can ensure that the airflow enters the housing 21 smoothly.

[0048] In another specific implementation, several airflow inlets 212 are set on the side wall of the housing 21 (not shown in the figure), so that there are no other structures between the airflow inlets 212 and the first air inlet. This ensures that after the airflow flows from the outside into the airflow inlet 212, it is directly rolled into the cavity 2211 by the rotating impeller 221 from the first air inlet 223, thus ensuring that the outside airflow can quickly enter the impeller 221.

[0049] In this embodiment of the utility model, such as Figure 2 , Figure 3 , Figures 5-9 As shown, the heating module 23 includes a heating element 231 and a mounting bracket 232; the mounting bracket 232 and the inner wall of the housing 21 are sealed together to prevent unheated airflow from flowing into the heat flow chamber 214. The heating element 231 is fitted into the mounting bracket 232. The second air inlet 233 is located at one end of the heating element 231 near the impeller 221, and the second air outlet 234 is located at one end of the heating element 231 away from the impeller 221. The heating element 231 has a channel for airflow to flow from the second air inlet 233 to the second air outlet 234, so that the airflow can contact the heating element 231 and enter the heat flow chamber 214 from the second air outlet 234.

[0050] like Figures 5-9 As shown, the heating element 231 is composed of several heating plates arranged according to certain rules, including adjacent heating plates connected at one end to form a continuous V-shape, or rectangular heating plates arranged in parallel planes, and a channel for airflow is provided between adjacent heating plates, which can increase the contact area between the airflow and the heating element 231, improve the heating efficiency of the airflow, and at the same time ensure that the second air inlet 233 at the lower end and the second air outlet 234 at the upper end in the heating module 23 can be connected, so that the airflow can smoothly enter the heat flow cavity 214 from the second air outlet 234 after heating.

[0051] Meanwhile, the length of the heating element 231 is the same as or close to the length of the first air outlet 224, and the size of the second air outlet 234 and the second air inlet 233 is the same as or close to the size, which can ensure that the airflow from the first air outlet 224 can pass smoothly through the heating element 231.

[0052] In this embodiment, the structure of the airflow outlet 213 includes a circular structure or a strip structure; and the arrangement of the airflow outlet 213 is set according to certain regulations to ensure that the airflow flowing out of the housing 21 can come into uniform contact with the clothes to be dried.

[0053] In one specific implementation of this embodiment, such as Figures 1-3As shown, the airflow outlet 213 is strip-shaped, allowing the airflow to evenly contact the clothes after exiting the housing 21. Simultaneously, the airflow exiting the strip-shaped outlet 213 forms an "air curtain," further enhancing the airflow pressure and velocity. The housing includes several sidewalls surrounding the heat flow cavity and a top wall. The sidewalls surround the heating module, and the top wall is located on the opposite side of the heating module. Several airflow outlets 213 are disposed on at least one sidewall of the heat flow cavity 214. These sidewalls are parallel to the length direction of the housing 21, and their length is relatively large, allowing for a large number of airflow outlets 213. The airflow outlets 213 are spaced a certain distance apart, with their long sides perpendicular to the top wall 2141 of the heat flow cavity 214. This allows the heated airflow from the second air outlet 234 to flow out through the airflow outlets 213, further ensuring uniform and large-area contact between the airflow and the clothes to be dried. An air guide 24 is provided between the top wall 2141 of the heat flow cavity 214 and the heating module 23. The air guide 24 is used to guide the airflow in the heat flow cavity 214 to the airflow outlet 213 to ensure the smooth flow of airflow and prevent the airflow from accumulating in the heat flow cavity 214, which would cause the airflow to flow back from the second air outlet 234.

[0054] In a specific implementation, such as Figure 8 and Figure 9 As shown, when several airflow outlets 213 are disposed on one side wall of the heat flow cavity 214, the air guide 24 is tilted to guide the airflow from the second air outlet 234 to the side where the airflow outlets 213 are disposed. The air guide 24 is tilted such that one end near the airflow outlet 213 is close to the top wall 2141 of the heat flow cavity 214, and the other end away from the airflow outlet 213 is away from the top wall 2141 of the heat flow cavity 214.

[0055] The structure of the air guide 24 includes a V-shaped or rectangular cross-sectional shape. When the air guide 24 is V-shaped, its tip 242 is close to the heating module 23, its open end 241 (with air outlet 213) is away from the heating module 23, and its other open end is close to the heating module 23. When the air guide 24 is rectangular, its end with air outlet 213 is away from the heating module 23, and its other open end is close to the heating module 23. The inclined arrangement of the air guide 24 allows the airflow to flow quickly and smoothly to the air outlet 213.

[0056] In another specific implementation, such as Figure 7As shown, airflow outlets 213 are respectively provided on two opposite side walls of the heat flow cavity 214; the air guide 24 has a V-shaped structure, with its two open ends 241 positioned close to the side wall with the airflow outlets 213 and away from the heating module 23, and its tip 242 positioned close to the heating module 23. By providing several airflow outlets 213 on the opposite side walls, the direct contact surface between the airflow and the clothing is expanded, accelerating the efficiency of the airflow exiting the heat flow cavity 214.

[0057] like Figure 6 As shown, a pair of support plates 2321 are arranged opposite each other on the mounting bracket 232. The support plates 2321 are connected between the air guide 24 and the mounting bracket 232 to support and fix the air guide 24. The support plates 2321 are inserted into the hot flow cavity 214 along the side wall of the hot flow cavity 214 and connected to the air guide 24 to support and fix the air guide 24. The two opposing support plates 2321 are in close contact with the side wall with the air outlet 213, and the two opposing support plates 2321 are connected to the air guide 24 near the top wall 2141 of the hot flow cavity 214 to form a hot flow cavity 214 isolated from the cold flow cavity 215. This simplifies the installation and connection structure of the air guide 24 in the housing 21 and ensures that the housing 21 has a small proportion while ensuring the functionality.

[0058] In another specific implementation of this embodiment, such as Figure 10 As shown, no air guide 24 is provided between the heat flow cavity 214 and the heating module 23. Several air outlets 213 are provided on the top wall 2141 of the heat flow cavity 214. The air outlets 213 are in the shape of round holes. The heated air flows out from the top wall 2141 of the heat flow cavity 214 by natural upward characteristics, which further reduces the space between the heat flow cavity 214 and the second air outlet 234 of the heating module 23, and realizes the compact design of the housing 21.

[0059] This embodiment provides a compact and small-scale hot air device that can be used in household drying equipment as well as small-scale drying equipment in hotels. A streamlined housing 21 houses the heating module 23 and the fan module 22. The heating module 23 isolates the space within the housing 21 into a hot air chamber 214 and a cold air chamber 215, simplifying the internal structure of the housing 21. The fan module 22 is suspended within the cold air chamber 215, preventing its vibration from affecting the stability of the housing 21. Airflow enters the cold air chamber 215 through the airflow inlet, is pressurized and accelerated by the high-speed rotating impeller 221, and then heated by the heating module 23. The high-pressure, high-speed airflow exits through the airflow outlet 213, making extensive contact with the clothes to be dried, ensuring even heating and preventing uneven heating that could lead to localized overheating or undrying. Example 2

[0060] Please refer to Figure 11 Based on the hot air device 200 provided in Embodiment 1 above, this embodiment provides a drying device, which includes the hot air device 200 and a drying device 100 provided in Embodiment 1. The drying device 100 has a drying zone, and the hot air device 200 is installed at the bottom of the drying zone to generate hot air to dry the clothes in the drying zone. The hot air device 200 generates a large volume of high-speed airflow, which, due to the natural upward movement of the airflow, rises from the bottom of the drying chamber, penetrating the clothes and carrying away moisture, thus achieving uniform heating of the clothes.

[0061] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this utility model should have the ordinary meaning understood by those skilled in the art to which the embodiments of this utility model pertain.

[0062] In the description of this embodiment of the present invention, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0063] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0064] In the description of this embodiment of the invention, unless otherwise explicitly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0065] In the description of this embodiment of the invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model, and they should all be covered within the scope of the claims and specification of this utility model. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This utility model is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A hot air device, characterized in that, The hot air device includes: a housing, a fan module, and a heating module, wherein the fan module and the heating module are disposed within the housing; the fan module includes an outer shell and a columnar impeller disposed within the outer shell, wherein the two ends of the impeller are rotatably connected to the outer shell in the axial direction, the outer shell is fixedly connected to the housing, and a first air inlet and a first air outlet are provided on the outer shell, wherein the first air outlet faces the heating module; The housing is provided with an airflow inlet and an airflow outlet, and the airflow inlet is connected to the first air inlet; the impeller has a cavity inside, and multiple blades are arranged at intervals around the cavity. The multiple blades are radially inclined relative to the impeller so that the windward surface of the multiple blades faces the cavity, so as to drive the airflow to gather in the cavity from the first air inlet and then flow out from the first air outlet, blow it towards the heating module for heating, and then flow out from the airflow outlet.

2. The hot air device according to claim 1, characterized in that, A support member is provided inside the housing, and the support member connects the housing and the outer shell respectively to support the fan module to be suspended inside the housing.

3. The hot air device according to claim 1, characterized in that, The heating module is sealed to the inner wall of the housing, dividing the interior of the housing into a hot flow chamber and a cold flow chamber. The fan module is installed in the cold flow chamber, and the cold flow chamber is connected to the external airflow through the airflow inlet. The hot flow chamber is connected to the heating module through the second air outlet of the heating module, so that the heated airflow flows to the airflow outlet through the second air outlet.

4. The hot air device according to claim 3, characterized in that, The heating module includes a heating element and a mounting bracket; the mounting bracket and the inner wall of the housing are sealed together. The heating element is mounted on the mounting bracket. The second air inlet of the heating element is located at one end of the heating element near the impeller, and the second air outlet is located at one end of the heating element away from the impeller. The heating element has a channel for airflow to flow from the second air inlet to the second air outlet, so that the airflow can contact the heating element and enter the heat flow chamber from the second air outlet.

5. The hot air device according to claim 4, characterized in that, The housing includes a plurality of sidewalls and a top wall surrounding the heat flow cavity. The sidewalls surround the periphery of the heating module, and the top wall is located on the opposite side of the heating module. A plurality of airflow outlets are disposed on at least one of the sidewalls of the heat flow cavity. An air guide is provided between the top wall of the heat flow cavity and the heating module, and the air guide is used to guide the airflow in the heat flow cavity to the airflow outlet.

6. The hot air device according to claim 5, characterized in that, The airflow outlet is provided on one side wall of the hot flow cavity. One end of the air guide is located near the top wall of the hot flow cavity, and the other end is located away from the top wall of the hot flow cavity.

7. The hot air device according to claim 5, characterized in that, The airflow outlets are respectively provided on the two side walls opposite to the hot flow cavity; The air guide has a V-shaped structure, with its two open ends positioned close to the sidewall where the airflow outlet is located and away from the heating module, while the tip of the air guide is positioned close to the heating module.

8. The hot air device according to any one of claims 5-7, characterized in that, A pair of support plates are disposed opposite to each other on the mounting bracket, the support plates being connected between the air guide and the mounting bracket to support and fix the air guide.

9. The hot air device according to claim 4, characterized in that, Several of the airflow outlets are disposed on the top wall of the hot flow cavity.

10. A drying device, characterized in that, The drying equipment includes: a hot air device and a drying device as described in any one of claims 1-9, wherein the drying device has a drying zone inside, and the hot air device is installed at the bottom of the drying zone to generate hot air to dry the clothes in the drying zone.

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