Heating device and dryer
By designing an airflow channel structure between the heating element and the support frame in the dryer, the airflow can fully contact within the heating element, solving the problem of poor clothes drying effect caused by the layout of the fan and heating structure, and achieving efficient clothes drying and compact device design.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN MAGIC CUBE DIGITAL TECH CO LTD
- Filing Date
- 2025-05-12
- Publication Date
- 2026-06-30
Smart Images
Figure CN224431060U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of home appliance technology, specifically to a heating device and a clothes dryer. Background Technology
[0002] In clothes dryers, to avoid an excessively large overall size, the connections and distances between the various structures within the heating element need to be carefully planned and controlled. The distance between the fan structure and the heating element cannot be too large, otherwise it will increase the overall size of the device. Simultaneously, to ensure smooth airflow, the airflow must not encounter any obstructions as it blows from the fan outlet towards the heating element, and the airflow direction should not involve sharp turns; otherwise, it will lead to obstructed airflow.
[0003] Because the distance between the fan structure and the heating structure cannot be too far while ensuring smooth airflow, the existing fan structure layout generally aligns the outlet of the fan structure with the heating structure. However, the inventors of this application have discovered that, due to size limitations, aligning the outlet of the fan structure with the heating structure results in excessively fast airflow through the heating structure, insufficient contact time between the airflow and the heating structure, and consequently, poor heating effect, leading to ineffective drying of clothes in the dryer. Utility Model Content
[0004] In view of the above problems, this utility model provides a heating device and a clothes dryer to solve the problem in the prior art that the airflow heating time is insufficient due to the layout limitations between the fan structure and the heating structure, resulting in poor drying effect on clothes in the clothes dryer.
[0005] According to one aspect of the present invention, a heating device is provided, comprising: a housing and a bracket, a heating element and a fan fixedly installed in the housing, wherein the housing is provided with an air inlet and an air outlet;
[0006] The bracket is provided with a first opening and a second opening, and the bracket is provided with an airflow channel connecting the first opening and the second opening. The first opening is connected to the air outlet. The heating element is provided in the first opening, and the heating element is provided with a gap for airflow to pass through. The fan is provided in the second opening and the air outlet side of the fan faces the second opening. The air inlet side of the fan is connected to the air inlet.
[0007] The airflow channel gradually increases in size from the second opening toward the first opening.
[0008] In one alternative embodiment, the bracket extends a guide wall toward the air outlet, the guide wall being located between the first opening and the air outlet to direct the airflow heated by the heating element toward the air outlet.
[0009] In one alternative embodiment, the fan includes a fan housing and fan blades disposed within the fan housing, the fan housing being fixed to the bracket, and the inner walls of the fan housing and the outer casing being spaced apart.
[0010] In one alternative embodiment, the bracket is provided with a plurality of mutually separated airflow channels, and the bracket is provided with a second opening for each of the airflow channels. Each second opening is provided with a fan, and the plurality of second openings are arranged adjacent to each other. The airflow flowing out of each second opening is blown toward a portion of the heating element through an airflow channel.
[0011] In one alternative embodiment, the bracket is provided with a thermostat for each of the airflow channels, and each thermostat is thermally connected to the heating element to detect the surface temperature of the heating element.
[0012] In an alternative embodiment, the heating device further includes a flow guide disposed between the air outlet and the heating element to guide the airflow heated by the heating element and flowing out from the first opening to the air outlet;
[0013] The flow guide is fixedly connected to the bracket, and the heating element is sandwiched between the bracket and the flow guide.
[0014] In one alternative embodiment, a support plate is provided at each end of the flow guide along the length of the outer casing, and the two ends of the support plate are fixedly connected to the flow guide and the bracket to support the flow guide.
[0015] In one alternative embodiment, the flow guide is a V-shaped structure, including a first flow guide plate and a second flow guide plate, wherein the tip where the first flow guide plate and the second flow guide plate are connected is disposed close to the heating element;
[0016] The outer casing includes a first side panel and a second side panel, and a plurality of air outlets are disposed on the first side panel and the second side panel;
[0017] The first guide plate faces the first side plate and directs part of the airflow to the air outlet on the first side plate, and the second guide plate faces the second side plate and directs part of the airflow to the air outlet on the second side plate.
[0018] In one alternative embodiment, the housing is provided with a plurality of spaced-apart air inlets, with a first grid separating adjacent air inlets. The inner wall of the housing is provided with a second grid corresponding to the position of each first grid, and each second grid extends toward an adjacent air inlet to partially block the air inlet.
[0019] According to another aspect of the present invention, a clothes dryer is provided, comprising: a heating device as described in any one of the first aspects above and a machine body, wherein the machine body has a drying zone inside, and the heating device is installed at the bottom of the drying zone to generate hot air to dry the clothes in the drying zone.
[0020] This utility model embodiment places the heating element inside the bracket and the air outlet side at the second opening of the bracket, and sets an airflow channel between the heating element and the air outlet side, so that the airflow flowing out from the air outlet side flows into the heating element from the lower end of the heating element for heating along the airflow channel; through the airflow channel in the bracket and the connection and installation of the heating element, fan and bracket, all the airflow discharged from the air outlet side enters the heating element for heating, which improves the efficiency of the fan in delivering airflow to the heating element for heating.
[0021] The airflow gradually increases in size from the second opening towards the first opening, allowing the airflow to diffuse as it moves within the airflow channel after exiting from the outlet side. This diffusion slows down the airflow velocity entering the heating element, ensuring sufficient contact time between the airflow and the surface of the heating element. This maintains a compact heating device structure while increasing the temperature of the airflow exiting the outlet, thus solving the problem of poor clothes drying performance caused by the placement of the heating element and fan in existing technologies.
[0022] In addition, by fixing the fan and heating element on the bracket, the installation of the fan and heating element inside the housing is simplified, making the layout inside the housing more reasonable and avoiding the overall space ratio of the heating device being larger due to the complex internal structure of the housing.
[0023] 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
[0024] 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:
[0025] Figure 1 A perspective view of the heating device provided in Embodiment 1 of this utility model is shown.
[0026] Figure 2 A schematic diagram of the internal structure of the heating device provided in Embodiment 1 of this utility model is shown.
[0027] Figure 3 An exploded structural diagram of the heating device provided in Embodiment 1 of this utility model is shown.
[0028] Figure 4 A cross-sectional view of the heating device provided in Embodiment 1 of this utility model is shown.
[0029] Figure 5 for Figure 3 Enlarged diagram of point A in the middle.
[0030] Figure 6 A cross-sectional view of the heating device provided in Embodiment 1 of this utility model is shown.
[0031] Figure 7 A cross-sectional view of the lower housing provided in Embodiment 1 of this utility model is shown.
[0032] Figure 8 It shows Figure 7 Enlarged diagram of point B in the middle.
[0033] Figure 9 A schematic diagram of the clothes dryer provided in Embodiment 2 of this utility model is shown.
[0034] The reference numerals in the detailed embodiments are as follows:
[0035] 100. Heating device; 200. Machine body;
[0036] 11. Outer shell; 110. Top cover; 111. Air inlet; 112. Air outlet; 113. First side panel; 114. Second side panel; 115. Upper housing; 116. Lower housing; 117. Protrusion; 118. First grille; 119. Second grille;
[0037] 12. Support; 121. Guide wall; 122. First opening; 123. Second opening; 124. Airflow channel; 125. First sidewall; 126. Second sidewall;
[0038] 13. Fan; 131. Air outlet side; 132. Air inlet side; 133. Fan casing; 134. Fan blades;
[0039] 14. Heating element;
[0040] 15. Flow guide; 151. First flow guide plate; 152. Second flow guide plate; 153. Tip;
[0041] 16. Guide channel; 161. First guide channel; 162. Second guide channel;
[0042] 17. Support plate. Detailed Implementation
[0043] 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.
[0044] Example 1
[0045] Please see Figures 1-8 , Figure 1 A perspective view of the heating device 100 of this utility model is shown, as follows: Figure 2 As shown, the heating device 100 includes: a housing 11, a support 12, a heating element 14, and at least one fan 13 disposed within the housing 11. The housing 11 has an air inlet 111 and an air outlet 112. Airflow enters the housing 11 through the air inlet 111 and exits through the air outlet 112. The support 12, fan 13, and heating element 14 are positioned along the airflow path within the housing 11. Figure 3 As shown, the bracket 12 is provided with a first opening 122 and a second opening 123. The bracket 12 is provided with an airflow channel 123 that connects the first opening 122 and the second opening 123. The first opening 122 is connected to the air outlet 112. The heating element 14 is provided with a gap for airflow to pass through. The fan 13 is provided with the second opening 123 and the air outlet side 131 of the fan 13 faces the second opening 123. The air inlet side 131 of the fan 13 is connected to the air inlet 111. The airflow channel 124 gradually increases in size from the second opening 123 toward the first opening 122.
[0046] like Figure 4 As shown, the bracket 12 is provided with a first opening 122 and a second opening 123, and an airflow channel 124 is formed between the first opening 122 and the second opening 123; Figure 5As shown, the heating element 14 is installed in the first opening 122 of the bracket 12 and fixedly installed with the bracket 12. The air outlet side 131 of the fan 13 is located below the second opening 123 and fixedly installed with the bracket 12. The air outlet side 131 of the fan is positioned facing the lower end of the heating element 14. The air inlet side 132 of the fan 13 is connected to the air inlet 111. One end of the first opening 122 is connected to the airflow channel 124, the heating element 14 is placed in the middle, and the other end is connected to the air outlet 112.
[0047] In this embodiment, the heating device 100 is used to heat the airflow and control the airflow to flow into the drying zone of the dryer and contact the clothes to be dried. The heating device 100 is disposed at the bottom or side of the drying zone. When the drying assembly is disposed at the bottom of the drying zone, in the vertical direction, the air inlet 111 is at the bottom of the housing 11, and the air outlet 112 is on the upper surface of the housing 11.
[0048] Airflow from the external environment flows into the housing 11 through the air inlet 111. The air inlet 111 is connected to the air intake side 132. Airflow flows into the housing 11 from the air inlet 111. After the fan 13 is started, it draws the airflow in the housing 11 from the air intake side 132 and discharges it from the air outlet side 131 into the airflow channel 124. The airflow flows along the airflow channel 124 to the heating element 14 and enters the heating element 14 from the lower end of the heating element 14.
[0049] The heating element 14 consists of multiple heating plates connected in a certain pattern, with a certain distance between adjacent heating plates, i.e., gaps (not shown in the figure) are provided between adjacent heating plates to allow airflow to pass through. Figure 5 As shown, the airflow channel communicates with the air outlet 112 through the gap of the heating element 14 placed in the first opening 122. The airflow enters the heating element 14 from the bottom of the first opening 122 along the airflow channel 124. The airflow is heated after making full contact with the heating element 14 as it passes through the gap. The heated airflow flows out from the top of the heating element 14, exits the first opening 122, and then flows out of the air outlet 112 to the outside of the outer casing 11 to contact the clothing. In this embodiment, the airflow channel 124 gradually increases in size from the second opening 123 toward the first opening 122, so that after the airflow is discharged from the air outlet side 131 into the airflow channel 124, it gradually diffuses as the airflow moves within the airflow channel 124. By diffusing the airflow to reduce the speed of the airflow about to enter the heating element 14 for heating, the contact time between the airflow and the surface of the heating element is increased, so that the airflow has enough time to contact the surface of the heating element 14 when passing through the heating element 14, thereby increasing the temperature of the airflow flowing out of the air outlet 112 and solving the problem of poor clothes drying effect caused by the position layout of the heating element 14 and the fan 13 in the prior art.
[0050] like Figure 2As shown, in this embodiment, the air outlet 131 is positioned below the second opening 123 of the bracket 12, and the fan 13 is fixedly connected to the bracket 12 for installation. The heating element 14 is installed inside the bracket 12 and fixedly mounted thereto. This ensures that airflow can smoothly enter the heating element 14 from its lower end through the airflow channel 124 after exiting from the air outlet 131, thus improving the efficiency of the fan 13 in delivering airflow to the heating element 14. Furthermore, by fixing the fan 13 and heating element 14 to the bracket 12, the installation of the fan 13 and heating element 14 within the housing 11 is simplified, resulting in a more rational layout within the housing 11 and preventing a larger overall space requirement for the heating device 100 due to a complex internal structure.
[0051] In one implementation of this embodiment, such as Figure 3 and Figure 4 As shown, the fan 13 includes a fan housing 133 and fan blades 134 disposed within the fan housing. The fan housing 133 is fixed to the bracket 12, and the fan housing 133 and the inner wall of the outer casing 11 are spaced apart. The air inlet side 132 is disposed at the end of the fan housing 133 away from the second opening 123, and the air outlet side 131 is disposed at the end of the fan housing 133 close to the second opening 123. The fan blades 134 are disposed between the air inlet side 132 and the air outlet side 131, drawing airflow from the air inlet side and discharging it from the air outlet side 131 through the second opening 123 into the airflow channel 124.
[0052] In one implementation of this embodiment, such as Figure 5 As shown, the fan 13 includes a fan housing 133, which is integrated with the support 12. In this embodiment, by integrating the fan housing 133 and the support 12, the connection between the fan 13 and the support 12 is better secured, and the misalignment between the outlet side 131 and the second opening 123 is avoided when the fan 13 vibrates after startup. This ensures that all the airflow discharged from the outlet side 131 can enter the airflow channel 124, improving the working efficiency of the fan 13. At the same time, by integrating the fan housing 133 and the support 12, the vibration of the fan 13 can be transmitted to the support 12, thereby suppressing the vibration and effectively reducing the noise level generated by the vibration. In addition, the integrated connection of the fan housing 133 and the support 12 simplifies the connection structure between the fan 13 and the support 12, avoiding structural complexity.
[0053] In one implementation method of this embodiment, such as Figure 4As shown, the bracket 12 is provided with a plurality of mutually separated airflow channels 124. The bracket 12 is provided with a second opening 123 corresponding to each airflow channel 124. A fan 13 is provided in each second opening 123. The plurality of second openings 123 are arranged adjacent to each other. The airflow flowing out of each second opening 123 is blown towards part of the heating element 14 through an airflow channel 124.
[0054] When the heating device 100 is equipped with multiple fans 13, and the bracket 12 is equipped with multiple airflow channels 124, the airflow channels 124 are arranged side by side and adjacent airflow channels 124 are not connected. The multiple fans 13 are arranged side by side, each fan 13 is located at a second opening 123, and the outlet side 131 of the fan 13 is connected to the second opening 123 and an airflow channel 124. This allows the airflow discharged from the outlet side 131 of the fan 13 to flow through the airflow channel 124, avoiding mutual interference between the airflows discharged from adjacent fans 13, ensuring smooth airflow and the diffusion effect of the airflow channel 124, effectively reducing the airflow velocity, automatically extending the heating time of the airflow in the heating element 14, and increasing the temperature of the airflow flowing out of the heating device 100. Figure 2 As shown, the heating device 100 is provided with two fans 13 and the bracket 12 is provided with two second openings 123. The air outlet side 131 of each fan 13 is connected to a second opening 123 of the bracket 12.
[0055] In one implementation, a bracket 12 has only one first opening 122, which is larger than a second opening. A heating element 14 is placed in the first opening 122 and fixedly installed with the bracket 12. Each second opening 123 is connected to the first opening through an airflow channel 124. The airflow flowing into the first opening 122 through each airflow channel 124 will only flow into the heating element 14 from a certain local position.
[0056] In another implementation, such as Figure 4 As shown, the number of first openings 122 and second openings 123 on the bracket 12 is the same. There is no airflow between adjacent first openings. The heating element 14 is placed at the top of the first opening 122. The airflow flows from the first opening 122 to the bottom of the heating element 14 and enters the gap of the heating element 14 for heating. Finally, it flows out from the top of the heating element 14 and flows out of the air outlet 112 to the outside of the outer casing 11.
[0057] In this embodiment, by setting multiple mutually separated airflow channels 124 on the bracket 12, the airflow discharged by multiple fans 13 can enter the heating element 14 from the local lower end of the heating element 14 through the independent airflow channels 124 for heating. This makes the airflow in various positions within the heating element 14 more uniform and avoids the accumulation of airflow discharged by multiple fans 13, which would lead to poor heating effect. At the same time, a second opening 123 is connected to a fan 13, so that the airflow discharged from one air outlet side 131 can flow in the independent airflow channel 124. When the airflow enters the heating element, the airflow distribution and airflow velocity within the heating element 14 are more uniform, which improves the heating quality of the airflow.
[0058] Multiple fans are installed below the support 12. When multiple fans operate simultaneously, the airflow of the heated element 14 is increased, providing a large amount of high-temperature airflow to the drying zone of the dryer and improving the drying efficiency. In this embodiment, multiple fans 13 are used to achieve a large airflow supply, thereby improving the drying effect of the dryer. The air outlet side 131 of one fan 13 is aligned with a partial lower end of the heating element 14 through a second opening 123, so that the airflow discharged from the air outlet side 131 can enter the heating element 14 from the partial lower end of the heating element 14 for heating. This ensures the uniformity of airflow distribution and airflow velocity within the heating element 14, preventing airflow from accumulating in a certain area of the heating element 14 or having insufficient airflow distribution in certain areas of the heating element 14, which would result in uneven temperature of the airflow exiting the outer casing 11 and improve the heating quality of the airflow in the heating device. In addition, by setting multiple small fans 13, the spatial volume of the outer casing 11 can be further reduced, allowing the heating device 100 to be used in small dryers.
[0059] like Figure 4 and Figure 5As shown, when the bracket is provided with multiple mutually separated airflow channels 124, the bracket is provided with multiple opposing first sidewalls 125 and second sidewalls 126; the first sidewalls 125 and second sidewalls 126 are arranged at a certain distance along the length of the outer shell 11. The distance between the second sidewall 126 corresponding to the previous airflow channel 124 and the first sidewall 125 corresponding to the next airflow channel 124 gradually decreases along the direction from the second opening 123 of the airflow channel 124 toward the first opening 122, so that the airflow channel 124 gradually increases from the second opening 123 toward the first opening 122. After the airflow is discharged from the air outlet side 131 and enters the corresponding airflow channel 124, during the flow of the airflow toward the heating element 14, the airflow diffuses as the internal space of the airflow channel 124 continuously increases, reducing the flow speed of the airflow and increasing the time required for the airflow to pass through the heating element 14, so that the airflow has enough time to contact the heating element 14, and significantly increasing the temperature of the airflow. Meanwhile, by gradually reducing the distance between the second sidewall 126 of the upper airflow channel 124 and the first sidewall 125 of the lower airflow channel 124, the space of the airflow channel 124 is expanded, so that the expansion of the internal space of the airflow channel 124 can match the length direction of the outer shape of the outer shell 11. This avoids increasing the circumferential dimension of the outer shell 11 in order to expand the internal space of the airflow channel 124 (for example, when the main body of the outer shell is a cylinder, there is no need to increase the size of the circular cross section of the cylinder). This further simplifies the structure of the heating device 100, so that the heating device 100 can be used in a small clothes dryer.
[0060] In this embodiment, the outer shell 11 is a columnar structure and is arranged horizontally (not shown in the figure). Multiple air outlets 112 are arranged on the upper surface of the outer shell 11 along the length direction of the outer shell 11. Multiple fans 13 are arranged side by side along the length direction of the outer shell 11. Multiple second openings 123 are arranged side by side along the length direction of the outer shell 11. The upper edge of the fan housing 133 located next to the air outlet side 131 is connected to the lower surface of a second opening 123.
[0061] The heating device 100 is placed horizontally below the drying area of the dryer. The heated airflow flows out from the air outlet 112 of the outer casing 11 to dry the clothes in the drying area. The outer casing 11 is placed horizontally, that is, the length direction of the outer casing 11 is parallel to the horizontal direction. Multiple air outlets 112 are arranged along the length direction of the casing on the upper surface of the outer casing 11. When the heated airflow passes through the heating element 14 and flows out from the first opening 122, it flows out from the multiple arranged air outlets 112, which can further control the flow speed, air pressure and flow rate of the airflow, so that the airflow in contact with the clothes to be dried is uniform, avoiding the problem of local overheating or uneven heating of the clothes.
[0062] The structure of the air outlet 112 includes a circular structure or a strip structure; and the arrangement of the air outlets 112 is set according to certain regulations to ensure that the airflow from the outer shell 11 can make uniform contact with the clothes to be dried. The strip shape of the air outlet 112 allows the airflow to make uniform contact with the clothes after flowing out of the outer shell 11. At the same time, the airflow flowing out of the strip-shaped air outlet 112 can form an "air curtain", which can enhance the pressure and velocity of the airflow.
[0063] Meanwhile, in order to increase the airflow, multiple smaller fans 13 are used to provide a large airflow, avoiding the need to place larger fans 13 which would increase the size of the outer casing 11. This further reduces the space volume of the outer casing 11, allowing the heating device 100 to be used in small clothes dryers.
[0064] In one implementation of this embodiment, the cylindrical structure of the outer casing 11 includes both cylindrical and cuboid structures. Multiple air outlets 112 are located at the upper end of the outer casing 11. When the heated airflow exits from the upper end of the heating element 14, it flows directly out of the air outlets 112 due to the free upward movement of the airflow. No structure is provided between the upper inner wall of the outer casing 11 and the heating element 14 to prevent the heated airflow from changing direction after passing through the heating element 14. The airflow directly passes through the air outlets 112 and exits the outer casing 11, thus reducing the space between the inner wall of the outer casing 11 and the support 12, achieving a compact design for the outer casing 11. The bracket 12 is sealed or tightly abutted against the inner wall of the housing 11 at the end away from the second opening 123, so as to prevent the airflow inside the columnar structure of the housing 11 from flowing out of the air outlet 112 through the airflow channel 124 of the bracket 12 between the fan 13 and the heating element 14. At the same time, it also ensures that the heated airflow can flow out of the housing 11 through the air outlet 112.
[0065] In this embodiment, a thermostat (not shown in the figure) is provided in each airflow channel 124 corresponding to the bracket 12. Each thermostat is thermally connected to the heating element 14 to detect the surface temperature of the heating element 14. In this embodiment, by setting a thermostat in an airflow channel 124 near the heating element 14, when there are multiple thermostats, one thermostat is used to detect whether the temperature of a certain local area of the heating element 14 is too high. When the local temperature of the heating element 14 is too high, it can be determined whether the fan 13 corresponding to the airflow channel 124 where the thermostat is installed is working normally. When the fan 13 is working normally, the airflow can be discharged from the outlet side 131 through the second opening 123 into the airflow channel 124, and then enter the first opening 122 from the airflow channel 124 and enter the heating element 14 from the lower end of the corresponding local position, so as to remove the temperature of the heating element 14 in time. When the fan 13 is abnormal and cannot exhaust air in time or the exhaust volume is insufficient, the temperature of the local position of the heating element 14 corresponding to the fan 13 will become higher. The temperature controller installed in the corresponding airflow channel 124 will detect the abnormality and shut down the heating element 14 in time to avoid fire.
[0066] In another implementation of this embodiment, such as Figure 3 As shown, the outer casing 11 includes an upper casing 115 and an upper casing 116. Multiple air inlets 111 are disposed on the upper casing 116 and are regularly arranged along the length direction of the outer casing 11. Multiple air outlets 112 are disposed on the upper casing 115 and are regularly arranged along the length direction of the outer casing 11.
[0067] like Figure 3 As shown, a protrusion 117 is provided on the upper shell 115, and the outer shell 11 includes a columnar structure and the protrusion 117. The airflow path within the columnar structure communicates with the interior of the protrusion 117. The structure of the protrusion 117 includes a cylinder or a cuboid, and this embodiment of the present invention does not impose a specific limitation. The length direction of the protrusion 117 is parallel to the length direction of the outer shell 11, as shown below. Figure 3 As shown, the first opening 122 of the bracket 12 is located inside the protrusion 117, and the second opening 123 of the bracket 12 is located inside the columnar structure.
[0068] In one implementation, such as Figure 3 As shown, the protrusion 117 includes an upper cover plate 110, and multiple air outlets 112 are disposed on the upper cover plate 110 and regularly arranged along the length of the cylindrical structure of the outer shell 11. No structure is provided between the upper cover plate 110 and the bracket 12 to prevent the heated airflow from being obstructed after passing through the heating element 14, thus avoiding a change in the airflow direction. The airflow can directly pass through the air outlets 112 and flow out of the outer shell 11, which can reduce the space between the upper cover plate 110 and the bracket 12 and achieve a compact design of the outer shell 11.
[0069] In another implementation, the protrusion 117 further includes a first side plate 113, a second side plate 114, a third side plate, and a fourth side plate. The third and fourth side plates are symmetrically arranged at both ends of the cylindrical structure of the outer shell 11 along its length. The first side plate 113, the second side plate 114, and the third and fourth side plates are arranged adjacent to each other. Figure 6 As shown, multiple air outlets 112 are provided on the first side plate 113 and the second side plate 114.
[0070] In one implementation of this embodiment, such as Figure 3 As shown in Figure 6, the bracket 12 has a guide wall 121 extending towards the air outlet. The guide wall 121 is located between the first opening 122 and the air outlet 112 to guide the airflow heated by the heating element 14 to the air outlet 112. The bracket is provided with two guide walls 121, which are spaced apart from the first opening 122. One guide wall 121 extends away from the first opening 122 towards the first side plate 113 and abuts against the lower end of the air outlet 112 on the first side plate 113. The other guide wall 121 extends away from the first opening towards the second side plate 114 and abuts against the lower end of the air outlet 112 on the second side plate 114. The airflow flowing out of the second opening and heated by the heating element 14 is guided by the two guide walls 121 to the first side plate 113 and the second side plate 114 respectively, and flows out of the air outlet 112 to the outside of the outer casing 11.
[0071] The first sidewall 125, the second sidewall 126, the third sideplate, and the fourth sideplate of the bracket 12 are connected or sealed together to seal and separate the interior of the protrusion 117 from the interior of the columnar structure of the outer shell 11, thereby preventing airflow inside the columnar structure of the outer shell 11 from flowing into the interior of the protrusion 117 through any means other than the airflow channel 124 between the fan 13 and the heating element 14.
[0072] like Figure 2 As shown, the heating device 100 also includes a flow guide 15, which is disposed between the air outlet 112 and the heating element 14 to guide the airflow heated by the heating element 14 and flowing out from the first opening 122 to the air outlet 112; the flow guide 15 is fixedly connected to the bracket 12 and clamps the heating element 14 between the bracket 12 and the flow guide 15.
[0073] The heating element is installed inside the first opening 122, and the flow guide 15 is positioned above the first opening 122, such that the heating element is located between the flow guide 15 and the support 12. Figure 6As shown, a guide channel 16 is formed between the guide member 15 and the heating member 14. The airflow heated by the heating member 14 flows out of the outer casing 11 from the air outlet 112 along the guide channel 16. The structure of the guide member 15 includes a V-shaped structure and a rectangular structure in cross-sectional shape. The guide member 15 guides the heated airflow flowing out of the first opening 122 to the air outlet 112, so that the airflow can flow quickly and smoothly to the air outlet 112 in the guide channel 16, avoiding the accumulation of airflow in the guide channel 16.
[0074] like Figure 6 As shown, when the guide member 15 has a V-shaped structure, the guide plate includes a first guide plate 151 and a second guide plate 152. The tip 153 connecting the first guide plate 151 and the second guide plate 152 is disposed near the heating element 14. Multiple air outlets 112 are disposed on the first side plate 113 and the second side plate 114. The first guide plate 151 faces the first side plate 113 and guides part of the airflow to the air outlet 112 on the first side plate 113. The second guide plate 152 faces the second side plate 114 and guides part of the airflow to the air outlet 112 on the second side plate 114.
[0075] The tip 153, connected by the first guide plate 151 and the second guide plate 152, is positioned close to the heating element 14. This guides the airflow from the first opening 122, dividing it into two parts within the guide channel 16. One part of the airflow flows along the first guide plate 151 to the first side plate 113 and exits through the air outlet 112 on the first side plate 113. The other part flows along the second guide plate 152 to the second side plate 114 and exits through the air outlet 112 on the second side plate 114. This allows the airflow to flow smoothly from the guide channel 16 and exit through the air outlet 112, further dispersing the heated airflow and making the airflow from the outer casing 11 more uniform. Simultaneously, the arrangement of multiple air outlets 112 expands the direct contact area between the airflow and the clothing, accelerating the efficiency of airflow exiting the outer casing 11. The first guide plate 151 and the second guide plate 152 are positioned away from the heating element 14 on the side away from the tip 153, which ensures that the airflow has sufficient flow space in the airflow channel 124. The first guide plate 151 and the second guide plate 152 abut against the upper end of the air outlet 112 on the first side plate 113 and the second side plate 114, respectively, which can control the distance between the guide element 15 and the first opening 122 to be as small as possible while ensuring smooth airflow.
[0076] like Figure 6As shown, one end of a guide wall 121 abuts against the lower end of the air outlet 112 of the first side plate 113, forming a first guide channel 161 with the first guide plate 151; one end of another guide wall 121 abuts against the lower end of the air outlet 112 of the second side plate 114, forming a second guide channel 162 with the second guide plate 152. By combining the first guide plate 151 and the second guide plate 152 on the V-shaped structure guide member 15 with the guide wall 121, the first guide channel 161 and the second guide channel 162 are formed, achieving uniform airflow distribution. At the same time, it makes the airflow from the first opening 122 flow more smoothly from the air outlet 112, reducing airflow resistance and turbulence, thereby improving airflow efficiency.
[0077] like Figure 7 As shown, the first guide plate 151 and the second guide plate 152 are curved along the flow direction of the airflow on the guide channel 16, so that the airflow flows more smoothly along the first guide plate 151 and the second guide plate 152, reducing airflow resistance and turbulence, and further improving the overall airflow efficiency.
[0078] In another implementation of this embodiment, the air outlet 112 is disposed on the first side plate 113 or the second side plate 114 (not shown in the figure), and the guide 15 is a V-shaped structure or a rectangular structure. The guide 15 is inclined to guide the airflow to the first side plate 113 or the second side plate 114 where the air outlet 112 is disposed, so that the airflow can flow quickly and smoothly from the air outlet 112 to the outside of the outer casing 11.
[0079] In this embodiment, as Figure 2 As shown, along the length of the outer casing 11, a support plate 17 is provided at each end of the flow guide 15. The two ends of the support plate 17 are fixedly connected to the flow guide 15 and the bracket 12 respectively to support the flow guide 15, so that the flow guide 15 and the bracket 12 maintain a preset distance to allow the airflow to flow smoothly in the flow channel 16. At the same time, the support plate 17 connects the flow guide 15 and the bracket 12, which simplifies the installation and connection structure of the flow guide 15 in the casing, and ensures that the function is realized while also ensuring that the casing space occupies a small proportion.
[0080] In this embodiment, as Figure 7 As shown, the outer casing has multiple spaced-apart air inlets 111, such as... Figure 8As shown, adjacent air inlets 111 are separated by a first grid 118. A second grid 119 protrudes from the inner wall of the casing corresponding to the position of each first grid 118. Each second grid 119 extends towards an adjacent air inlet to partially block it. At the bottom of the casing, adjacent air inlets are spaced apart by a first grid 118. Inside the casing, the inner wall of each grid protrudes to form a second grid 119. Each second grid 119 extends on the side closest to an air inlet. All second grids 119 extend in the same direction, causing the first grids 118 and the second grids 119 on the inner wall of the first grids 118 to be misaligned in the radial direction of the casing. The second grids 119 can partially block the view, reducing the possibility of the fan being directly visible from the outside.
[0081] Example 2
[0082] refer to Figure 9 Based on Embodiment 1, this embodiment provides a clothes dryer, which includes any of the heating devices 100 provided in Embodiment 1 and a body 200. The body 200 has a drying zone inside, and the heating device 100 is installed at the bottom of the drying zone to generate hot air to dry the clothes in the drying zone. By setting an airflow channel 124, the airflow discharged from the outlet side 131 can enter the heating element 14 from the lower end of the heating element 14 for heating. The cross-sectional area of the airflow channel 124 gradually increases along the direction from the second opening 123 towards the first opening 122, causing the airflow to gradually diffuse as it moves within the airflow channel 124 after being discharged from the outlet side 131 and entering the airflow channel 124. By diffusing the airflow, the speed of the airflow about to enter the heating element 14 is reduced, allowing sufficient time for the airflow to contact the surface of the heating element 14 as it passes through, thus increasing the temperature of the airflow exiting from the outlet 112 and solving the problem of poor clothes drying effect caused by the positional arrangement of the heating element 14 and the fan in the prior art. 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.
[0083] 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.
[0084] 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.
[0085] 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.
[0086] 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.
[0087] 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 heating device, characterized in that, The heating device includes: a housing and a bracket, a heating element and a fan fixedly installed inside the housing; the housing is provided with an air inlet and an air outlet. The bracket is provided with a first opening and a second opening, and the bracket is provided with an airflow channel connecting the first opening and the second opening. The first opening is connected to the air outlet. The heating element is provided in the first opening, and the heating element is provided with a gap for airflow to pass through. The fan is provided in the second opening and the air outlet side of the fan faces the second opening. The air inlet side of the fan is connected to the air inlet. The airflow channel gradually increases in size from the second opening toward the first opening.
2. The heating device of claim 1, wherein The bracket extends toward the air outlet with a guide wall, which is located between the first opening and the air outlet to guide the airflow heated by the heating element to the air outlet.
3. The heating device of claim 1, wherein, The fan includes a fan housing and fan blades disposed inside the fan housing. The fan housing is fixed to the bracket, and the inner walls of the fan housing and the outer shell are spaced apart.
4. The heating device of claim 1, wherein, The bracket is provided with multiple mutually separated airflow channels. The bracket is provided with a second opening for each airflow channel. Each second opening is provided with a fan. The multiple second openings are arranged adjacent to each other. The airflow flowing out of each second opening is blown towards part of the heating element through an airflow channel.
5. The heating device of claim 4, wherein, The bracket is provided with a temperature controller for each of the airflow channels, and each temperature controller is thermally connected to the heating element to detect the surface temperature of the heating element.
6. The heating device according to any one of claims 1-5, characterized in that The heating device further includes a flow guide, which is disposed between the air outlet and the heating element to guide the airflow heated by the heating element and flowing out from the first opening to the air outlet. The flow guide is fixedly connected to the bracket, and the heating element is sandwiched between the bracket and the flow guide.
7. The heating device of claim 6, wherein, Along the length of the outer shell, a support plate is provided at each end of the flow guide, and the two ends of the support plate are fixedly connected to the flow guide and the bracket to support the flow guide.
8. The heating device of claim 6, wherein, The flow guide has a V-shaped structure, including a first flow guide plate and a second flow guide plate, with the tip of the first flow guide plate and the second flow guide plate connected close to the heating element; The outer casing includes a first side panel and a second side panel, and a plurality of air outlets are disposed on the first side panel and the second side panel; The first guide plate faces the first side plate and directs part of the airflow to the air outlet on the first side plate, and the second guide plate faces the second side plate and directs part of the airflow to the air outlet on the second side plate.
9. The heating device according to claim 1, characterized in that, The outer casing is provided with a plurality of spaced air inlets, and a first grid separates two adjacent air inlets. A second grid is protruding from the inner wall of the outer casing corresponding to the position of each first grid. Each second grid extends toward an adjacent air inlet to partially block the air inlet.
10. A clothes dryer, characterized in that, The dryer includes a heating device as described in any one of claims 1-9 and a body, wherein the body has a drying zone inside, and the heating device is installed at the bottom of the drying zone to generate hot air to dry the clothes in the drying zone.