Blower cylinder and stand type drier

Abstract

To provide a blower cylinder and a stand type drier capable of improving air heating efficiency by a heating module and improving heat radiation efficiency of the heating module by using air flow inside two cavities.SOLUTION: A stand type drier includes a blower cylinder 10. The blower cylinder 10 includes a housing and a heating module 12. In the inside of the housing, an air cavity and an air sucking region and an air blowing region communicating with the air cavity are formed. The heating module 12 is provided inside the air cavity. The air cavity is separated into a first sub cavity and a second sub cavity. The first sub cavity communicates with the air sucking region. The second sub cavity communicates with the air blowing region. In the heating module 12 and / or the housing, a ventilation region allowing the first sub cavity and the second sub cavity to communicate with each other is provided.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to the technical field of home appliances, and more particularly to a blower and a stand-type dryer. [Background technology]

[0002] A hair dryer is a common household appliance that includes a heating module for heating air, which generates warm air to efficiently dry hair, clothes, and the like. However, when drying pet hair or a user's long hair, the hair dryer is in operation for a long time. The heat dissipation efficiency of related technical means for hair dryers is low, and the air cannot remove all of the heat from the surface of the heating module. This makes it easy for heat to accumulate inside the hair dryer. As a result, the surface of the hair dryer may overheat, posing a risk of burns to the user and posing a potential safety hazard. At the same time, heat accumulation inside the hair dryer can cause the heating module to be damaged by excessive heat, or even to become red-hot or burned, thereby affecting the service life of the hair dryer. Summary of the Invention [Problem to be solved by the invention]

[0003] In view of the above, the present invention provides a blower and a stand-type dryer to solve the technical problem of how to improve the heat dissipation efficiency of a heating module. [Means for solving the problem]

[0004] The technical solution of the embodiment of the present invention is realized as follows.

[0005] a heating module for heating air; an air cavity formed therein; and an air intake area and an air blowing area communicating with the air cavity; the air intake area for introducing air into the air cavity and the air blowing area for discharging air from the air cavity; the heating module provided within the air cavity; the heating module separating the air cavity into a first sub-cavity and a second sub-cavity; the first sub-cavity communicating with the air intake area and the second sub-cavity communicating with the air blowing area; and a ventilation area provided in the heating module and / or the housing, the ventilation area communicating with the first sub-cavity and the second sub-cavity.

[0006] In some embodiments, the volume of the first sub-cavity is greater than the volume of the second sub-cavity.

[0007] In some embodiments, the air blowing area is located at one end of the heating module in a first direction, and the air intake area is located at one end of the heating module in a second direction, and the first direction is perpendicular to the second direction.

[0008] In some embodiments, the heating module comprises a first mounting plate extending along the second direction and a heating element for heating air, the first mounting plate being provided within the housing and separating the air cavity into the first sub-cavity and the second sub-cavity, the first mounting plate and / or the housing having a ventilation structure forming the ventilation area, the heating element being provided on the first mounting plate, and the heating element being provided in the first sub-cavity and / or the second sub-cavity.

[0009] In some embodiments, the heating element is wrapped around and connected to the first mounting plate along the first direction, or the heating element is wrapped around and connected to the first mounting plate along the second direction, or the heating element is wrapped around and connected to the first mounting plate along a third direction, the third direction being perpendicular to the first direction and the second direction.

[0010] In some embodiments, the volume of the heating element located in the first sub-cavity is greater than the volume of the heating element located in the second sub-cavity.

[0011] In some embodiments, the heating module further comprises a second mounting plate connected to the first mounting plate, the second mounting plate abutting the heating element along the first direction.

[0012] In some embodiments, the housing has a hollow air suction section, the air suction section has an air suction end and an air blowing end, the air suction area is formed between the air suction end and the air blowing end, the air blowing end is connected to the air cavity, and the blower further includes a fan arranged between the air suction end and the air blowing end.

[0013] In some embodiments, a plurality of air outlets are opened on one side of the housing, and together the air outlets define the air outlet area.

[0014] In some embodiments, the plurality of air outlets comprises a first air outlet and a second air outlet, and the ventilation area is at least partially located between the first air outlet and the second air outlet.

[0015] An embodiment of the present invention provides a stand-type dryer, which includes a support body for supporting the dryer, and a blower head connected to the support body, and the blower head includes the above-mentioned blower tube.

[0016] In some embodiments, the blower head comprises an outer shell connected to the support and a circuit board arranged in the mounting cavity, the mounting cavity being formed inside the outer shell, the blower tube being arranged in the mounting cavity, the mounting cavity being connected to the air cavity, and the circuit board being for controlling the blowing state of the blower tube.

[0017] An embodiment of the present invention provides a fan and a stand-type dryer, the stand-type dryer comprising a fan, the fan comprising a housing and a heating module, the housing having an air cavity therein and an air suction area and an air blowing area communicating with the air cavity, the heating module for heating the air, the heating module being disposed within the air cavity and separating the air cavity into a first sub-cavity and a second sub-cavity, the first sub-cavity communicating with the air suction area and the second sub-cavity communicating with the air blowing area, the heating module and / or the housing having a ventilation area communicating with the first sub-cavity and the second sub-cavity. The heating modules are located in the first and second sub-cavities, respectively. Air enters the first sub-cavity through the air intake area, passes through the ventilation area, and reaches the second sub-cavity before being discharged through the air outlet area. The partition between the heating modules and the inner wall of the housing allows the air to form a turbulent circulation within the first and second sub-cavities, removing heat from the heating modules located in the first and second sub-cavities, respectively. The heating modules exchange heat with the air at least twice, thereby improving the heating efficiency of the heating modules. The air flow within the two cavities reduces heat accumulation on the heating module surface and improves the heat dissipation efficiency of the heating modules, thereby reducing the risk of damage to the heating modules due to excessive heat and extending the service life of the fan. [Brief explanation of the drawings]

[0018] [Figure 1]1 is a perspective view of a stand-type dryer according to an embodiment of the present invention. [Figure 2] FIG. 2 is an exploded view of the blower head according to the embodiment of the present invention. [Figure 3] FIG. 2 is an exploded view of the blower according to the embodiment of the present invention. [Figure 4] FIG. 2 is a bottom view of the blower according to the embodiment of the present invention. [Figure 5] FIG. 5 is a cross-sectional view taken along the line AA in FIG. 4. [Figure 6] FIG. 6 is a schematic diagram showing the flow of gas in the blower tube shown in FIG. 5. [Figure 7] FIG. 10 is a schematic diagram of a heating member wound along a third direction according to an embodiment of the present invention. [Figure 8] 2 is a schematic diagram of a heating member wound along a first direction according to an embodiment of the present invention. FIG. [Figure 9] FIG. 2 is a top view of a blower according to an embodiment of the present invention, with some of the structure omitted. [Figure 10] FIG. 5 is a cross-sectional view taken along the line BB in FIG. 4. [Figure 11] FIG. 2 is a front view of the blower head according to the embodiment of the present invention. [Figure 12] FIG. 12 is a cross-sectional view taken along the CC direction in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0019] In order to more clearly describe the objectives, technical solutions and advantages of the present invention, the present invention will be described in detail below with reference to the drawings. It should be understood that the specific examples described herein are only used to illustrate the present invention, and are not intended to limit the present invention.

[0020] Each specific technical feature described in the specific embodiments can be combined in any suitable manner without contradiction, for example, different specific technical features can be combined with each other to form different embodiments and technical solutions. In order to avoid unnecessary repetition, various possible combinations of each specific technical feature of the present invention will not be described.

[0021] In the following, the terms "first / second / etc." do not imply identity or relatedness between the respective objects, but are used to distinguish between similar objects. It should be understood that the terms "upper", "lower", "outer", and "inner" indicating directions all refer to directions in normal use, and the "left" and "right" directions refer to the left and right directions specifically shown in the corresponding schematic diagrams, which may or may not be the left and right directions in normal use.

[0022] It should be noted that the terms "comprise," "include," or any other variation thereof, are intended to cover a non-exclusive inclusion, whereby a process, method, article, or apparatus comprising a set of elements includes not only those elements but also other elements not expressly listed or elements inherent in such process, method, article, or apparatus. Unless otherwise limited, an element defined by the phrase "comprises" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element. The term "plurality" refers to two or more than two.

[0023] A hair dryer includes a blower head for blowing out air, a handheld hair dryer includes a handle connected to the blower head to provide a point of impact for the user, and a stand-type hair dryer includes a support connected to the blower head, which is supported on the ground to free up the user's hands. An embodiment of the present invention provides a blower 10, which can be used independently as the "blower head" and can be directly connected to the handle or support, or can be installed within the blower head as an internal component. The blower 10 can be used in both stand-type and handheld hair dryers, and the structure of the blower 10 of the embodiment of the present invention is not limited by the type of application scenario.

[0024] For convenience of explanation, as shown in FIGS. 1 and 2, the blower 10 is applied to a stand-type dryer and is provided in a blower head 101 as an internal part.

[0025] 3, the blower 10 includes a housing 11 and a heating module 12. The housing 11 is hollow and the heating module 12 is provided inside the housing 11. Referring to FIGS. 4 and 5, an air cavity 111, an air suction area 112, and an air blowing area 113 are formed inside the housing 11. The air suction area 112 and the air blowing area 113 are all connected to the air cavity 111. The air suction area 112 is for introducing air into the air cavity 111, and the air blowing area 113 is for discharging air from the air cavity 111. The heating module 12 is for heating air, and is provided in the air cavity 111 to separate the air cavity 111 into a first sub-cavity 1111 and a second sub-cavity 1112, the first sub-cavity 1111 being connected to the air intake area 112, and the second sub-cavity 1112 being connected to the air blowing area 113. The heating module 12 and / or the housing 11 is provided with a ventilation area 114, which connects the first sub-cavity 1111 and the second sub-cavity 1112, and the heating module 12 is provided in the first sub-cavity 1111 and the second sub-cavity 1112, respectively. By configuring it in this manner, air does not enter the air blowing area 113 directly from the air intake area 112. After entering from the air intake area 112, the air first passes through the first sub-cavity 1111, then enters the second sub-cavity 1112 via the ventilation area 114, and finally is discharged via the air blowing area 113. By utilizing the air flow in the first sub-cavity 1111 and the second sub-cavity 1112 to remove heat from the surface of the heating module 12 at least twice, heat dissipation from the heating module 12 is promoted and the air can be heated sufficiently, thereby reducing heat accumulation on the surface of the heating module 12 and reducing the risk of the heating module 12 being damaged by excessively high temperatures.

[0026] Specifically, for convenience of explanation, the portion of the heating module 12 in the first sub-cavity 1111 is defined as the upper portion of the heating module 12, and the portion of the heating module 12 in the second sub-cavity 1112 is defined as the lower portion of the heating module 12. Referring to the schematic diagrams of gas flow in Figures 5 and 6, the second sub-cavity 1112 is separated from the air intake area 112, and the air entering from the air intake area 112 must first pass through the first sub-cavity 1111 before reaching the second sub-cavity 1112. Meanwhile, the air entering the first sub-cavity 1111 cannot directly enter the second sub-cavity 1112 due to the "gap" between the heating module 12 and the inner wall surface of the housing 11, and must pass through the ventilation area 114 before being guided to the second sub-cavity 1112. In this way, the air forms a circulating turbulent flow due to obstacles at multiple points within the first sub-cavity 1111, and the turbulent air can remove heat from the top of the heating module 12 at least once. Similarly, the air entering the second sub-cavity 1112 through the air suction area 112 also forms a circulating turbulent flow due to the "gap" between the inner wall surface of the housing 11 and the heating module 12, which can remove heat from the bottom of the heating module 12 at least once, and the heating module 12 exchanges heat with the air at least twice, making it easier for the heating module 12 to heat the air sufficiently, improving the heat dissipation efficiency of the heating module 12, and advantageously extending the service life of the dryer.

[0027] 6, the air cavity 111 refers only to the portion of the cavity inside the housing 11 that is adjacent to the heating module 12, and does not refer to all of the cavities inside the housing 11. To put it simply, the cavity above the heating module 12 is called the first sub-cavity 1111, and the cavity below the heating module 12 is called the second sub-cavity 1112. The above-mentioned "air suction region 112," "air blowing region 113," and "ventilation region 114" all represent virtual spaces. Taking the air suction region 112 as an example, if the housing 11 is provided with an air introduction opening that is directly connected to the air cavity 111, the space enclosed by the opening becomes the air suction region 112. If multiple openings are provided, the area obtained by adding up the spaces enclosed by each opening becomes the air suction region 112. If the openings extend to form a passage, the space within the passage becomes the air suction region 112.

[0028] Specifically, the above phrase "the ventilation area 114 is provided in the heating module 12 and / or the housing 11" means that the ventilation area 114 may be provided in the heating module 12, may be provided on the inner wall of the housing 11, may be provided in each of the heating module 12 and the housing 11, or may be provided between the heating module 12 and the housing 11. In the present invention, the specific installation location of the ventilation area 114 is not limited as long as the air in the first sub-cavity 1111 can enter the second sub-cavity 1112 via the ventilation area 114.

[0029] The blower 10 provided in this embodiment of the present invention comprises a housing 11 and a heating module 12, and inside the housing 11, an air cavity 111, an air suction area 112 communicating with the air cavity 111, and an air blowing area 113, the air suction area 112 being for introducing air into the air cavity 111, and the air blowing area 113 being for discharging air from the air cavity 111. The heating module 12 is for heating air, and is provided within the air cavity 111 to separate the air cavity 111 into a first sub-cavity 1111 and a second sub-cavity 1112, the first sub-cavity 1111 being connected to the air intake area 112, and the second sub-cavity 1112 being connected to the air blowing area 113. The heating module 12 and / or the housing 11 is provided with a ventilation area 114, which connects the first sub-cavity 1111 and the second sub-cavity 1112. By configuring in this manner, the heating modules 12 are respectively arranged in the first sub-cavity 1111 and the second sub-cavity 1112, and air enters the first sub-cavity 1111 from the air intake area 112, then reaches the second sub-cavity 1112 via the ventilation area 114, and finally is discharged through the air blowing area 113. The partition between the heating module 12 and the inner wall surface of the housing 11 allows the air to form a circulating turbulent flow within the first sub-cavity 1111 and the second sub-cavity 1112, thereby removing the heat from the upper part of the heating module 12 and the heat from the lower part of the heating module 12, respectively. The heating module 12 exchanges heat with the air at least twice, allowing the heating module 12 to heat the air sufficiently, thereby improving the efficiency of heating the air by the heating module 12 and improving the drying efficiency of clothes, hair, and pet hair. It also reduces heat accumulation on the surface of the heating module 12 and improves the heat dissipation efficiency of the heating module 12, reducing the risk of the heating module 12 being damaged by excessively high temperatures, and extending the service life of the dryer.

[0030] 5, in some embodiments, the volume of the first sub-cavity 1111 is larger than the volume of the second sub-cavity 1112, and the smaller volume of the second sub-cavity 1112 can be used to mix hot air and cold air. As described above, when the air from the first sub-cavity 1111 flows into the second sub-cavity 1112, because the second sub-cavity 1112 is located downstream of the first sub-cavity 1111 and has a smaller volume, the "local high pressure region" phenomenon in fluid mechanics causes the fluid to gather in a path with a slower flow velocity during the flow process, i.e., the air will first gather in the upstream first sub-cavity 1111. Meanwhile, the air at the inlet of the first sub-cavity 1111 (introduced from the air intake area 112) can be considered "cold air," and a portion of the heating module 12 is located within the first sub-cavity 1111 to heat the air and form "hot air." Because the volume of the first sub-cavity 1111 is large, the air has sufficient time and space to mix with the hot air and the cold air. Furthermore, the turbulence and convection effects within the larger volume of the first sub-cavity 1111 also help promote the mixing of the hot air and the cold air. A cavity with a smaller volume is likely to have a smaller cross-sectional area. According to the Bernoulli equation, for a given amount of gas, if the pressure, temperature, and molar coefficient remain constant, the gas flow velocity at the location with the smaller cross-sectional area is higher, causing the air to flow more rapidly, facilitating the blowing out of the air blowing area 113.

[0031] Specifically, the volume of the first sub-cavity 1111 can be made larger than the volume of the second sub-cavity 1112 by changing the position of the heating module 12 and / or changing the shape of the local contour of the housing 11. In some embodiments shown in the schematic diagrams of the present invention, the housing 11 has a vertically symmetrical outer shape, the heating module 12 is located below the symmetry plane of the housing 11, and the first sub-cavity 1111 and the second sub-cavity 1112 have substantially the same shape. In this case, the volume of the first sub-cavity 1111 being larger than the volume of the second sub-cavity 1112 means that the cross-sectional area of ​​the first sub-cavity 1111 is larger than the cross-sectional area of ​​the second sub-cavity 1112. Here, the cross-sectional direction is perpendicular to the heating module 12 and extends from the first sub-cavity 1111 toward the second sub-cavity 1112 (i.e., the left-right and front-back directions in the perspective of FIG. 5 ). According to Bernoulli's principle, the smaller the cross-sectional area, the lower the pressure and the faster the gas flow rate. Therefore, the air flow rate in the second sub-cavity 1112 is faster than that in the first sub-cavity 1111, and cold air gathers in the first sub-cavity 1111, making it easier for the heating module 12 to come into contact with the cold air, thereby realizing heating of the cold air. The air flow rate in the second sub-cavity 1112 is faster, making it easier to remove heat from the air cavity 111 through the air blowing area 113, thereby reducing heat accumulation in the heating module 12.

[0032] 5 and 6, in some embodiments, the air blowing area 113 is provided at one end of the heating module 12 in the first direction N1, and the air suction area 112 is located at one end of the heating module 12 in the second direction N2, where the first direction N1 is perpendicular to the second direction N2. The air entering from the air suction area 112 is guided along the second direction N2 to the first sub-cavity 1111, and then guided along the first direction N1 to the second sub-cavity 1112. Because the air suction area 112 and the air blowing area 113 are not located on the same line, the air in the air suction area 112 is guided from the air suction area 112 to the air blowing area 113 in a substantially "L" shape, rather than passing directly through the ventilation area 114 in a straight line. Due to the restriction of the transmission path, the flow rate of air entering the first sub-cavity 1111 is greater than the flow rate of air exhausted from the first sub-cavity 1111, and the air can be considered to "collect first and then exhaust" within the first sub-cavity 1111. On the one hand, the air remains in the first sub-cavity 1111 for a long time, allowing the heating module 12 to fully contact the air within the first sub-cavity 1111, improving the heating efficiency of the air within the first sub-cavity 1111. On the other hand, due to the turbulence effect and airflow blocking effect, the airflow speed of the linear airflow increases, increasing the speed difference with the surrounding still air, which tends to increase the velocity gradient, causing more collisions and vortices of air molecules and generating louder noise. In the embodiment of the present invention, the air passage (the area from the air intake area 112 to the air blowing area 113) inside the blower 10 is arranged in an approximately "L" shape, so that the air is guided from the air intake area 112 to the air blowing area 113 in an approximately "L" shape, and the air does not flow in a straight line, which is advantageous in reducing noise inside the blower 10.

[0033] The above-mentioned "first direction N1" indicates the direction indicated by the arrow N1 in Figure 6 (up and down), the air blowing area 113 is located at the bottom end of the first direction N1, the "second direction N2" indicates the direction indicated by the arrow N2 in Figure 6 (left and right), the air suction area 112 is located at the left end of the second direction N2, and the air in the air cavity 111 is first introduced into the first sub-cavity 1111 roughly from left to right, and then introduced into and discharged from the second sub-cavity 1112 roughly from top to bottom.

[0034] 3 , the heating module 12 includes a first mounting plate 121 and a heating element 122, the first mounting plate 121 is disposed within the housing 11 and extends along the second direction N2, the first mounting plate 121 is disposed within the housing 11 and separates the air cavity 111 into a first sub-cavity 1111 and a second sub-cavity 1112, and in the perspectives of FIGS. 5 and 6 , a portion of the cavity above the first mounting plate 121 is the first sub-cavity 1111, and a portion of the cavity below the first mounting plate 121 is the second sub-cavity 1112. The first mounting plate 121 and / or the housing 11 have a ventilation structure that forms a ventilation area 114, and air in the first sub-cavity 1111 passes through the ventilation structure to enter the second sub-cavity 1112.

[0035] Specifically, the ventilation structure may be a hole or groove-like structure provided in the first mounting plate 121, a hole or groove-like structure provided in the inner wall of the housing 11, a hole or groove-like structure provided in each of the first mounting plate 121 and the inner wall of the housing 11, or a gap provided between the first mounting plate 121 and the housing 11. Of course, the above-described embodiments do not necessarily exist independently, and various ventilation structures may exist simultaneously. As shown in FIG. 7, a part of the housing 11 (upper case 117) that shields the first mounting plate 121 is omitted in FIG. 7. In some embodiments shown in FIG. 7, the first mounting plate 121 has a plurality of through holes, each of which is spaced apart along the second direction N2. At the same time, a gap exists between the first mounting plate 121 and the inner wall of the housing 11, and the through holes and the gap between the first mounting plate 121 and the inner wall of the housing 11 together form a ventilation region 114 (the position surrounded by the dashed ellipse). Furthermore, since the first mounting plate 121 is spaced apart from the housing 11, the heat from the heating element 122 is transferred directly to the housing 11 by thermal conduction, reducing the risk of the user being burned.

[0036] As shown in FIGS. 3 and 5 , the heating element 122, which heats air, is mounted on the first mounting plate 121, and is mounted in the first sub-cavity 1111 and / or the second sub-cavity 1112. In this manner, the first mounting plate 121 forms a structure that separates the first sub-cavity 1111 and the second sub-cavity 1112, and the heating element 122 functions only as a "heating" structure. During the processing and assembly stages, the first mounting plate 121 is less difficult to process than the heating element 122. Therefore, the first mounting plate 121 can be customized to fit the shape of the inner wall surface of the housing 11. This allows the first mounting plate 121 to separate the first sub-cavity 1111 and the second sub-cavity 1112 and also function as a mounting position for the heating element 122, thereby facilitating the processing and assembly of the air blower 10. In addition, the first mounting plate 121 has a more regular shape than the heating element 122, which makes it easier to provide a connecting structure within the housing 11 to fix and assemble the first mounting plate 121, thereby realizing modular assembly of the heating module 12.

[0037] Specifically, in some embodiments, the heating element 122 may be provided in the first sub-cavity 1111 or the second sub-cavity 1112 as an individual component (such as an electromagnetic heating piece or an electromagnetic pole piece), or the heating element 122 may be provided in each of the first sub-cavity 1111 and the second sub-cavity 1112. Of course, the heating module 12 may also include multiple heating elements 122, and each heating element 122 may be provided in the first sub-cavity 1111 or the second sub-cavity 1112, or each heating element 122 may be provided in each of the first sub-cavity 1111 and the second sub-cavity 1112. The present invention does not limit the specific installation location or installation quantity of the heating elements 122, as long as there is at least one heating element 122 in any sub-cavity and the heating element 122 is connected to the first mounting plate 121.

[0038] Even if the heating element 122 is only installed in one sub-cavity, the effect of "using the turbulent air circulation in the first sub-cavity 1111 and the second sub-cavity 1112 to remove heat from the surface of the heating module 12 at least twice" can be achieved. The heat from the heating element 122 is inevitably conducted to the first mounting plate 121 by the air flow. If the first mounting plate 121 separating the first sub-cavity 1111 and the second sub-cavity 1112 is simultaneously present in both sub-cavities, the turbulent air circulation in the first sub-cavity 1111 and the second sub-cavity 1112 will both come into contact with the first mounting plate 121 and remove heat from the surface of the first mounting plate 121, which can therefore still be considered as "removing heat from the surface of the heating module 12."

[0039] 7 to 9, in some embodiments, the first mounting plate 121 is shown from a top view in both Figures 7 and 9, and the first mounting plate 121 is shown from a front view in Figure 8. The winding direction of the heating element 122 indicates the direction in which the central axis of the heating element 122 is located. Specifically, the heating element 122 may be wound and connected to the first mounting plate 121 along a first direction N1 (Figure 8), the heating element 122 may be wound and connected to the first mounting plate 121 along a second direction N2 (Figure 7), or the heating element 122 may be wound and connected to the first mounting plate 121 along a third direction N3 (Figure 9). No matter which direction the heating element 122 is wound around and connected to the first mounting plate 121, the heating element 122 is provided as a flexible structure (such as a resistance wire or a heating tube), i.e., the heating element 122 has elasticity and can be wound around and connected to the first mounting plate 121. Therefore, compared with other electromagnetic heating elements 122, the heating element 122 made of a resistance wire or a heating tube is less expensive and is advantageous for reducing the manufacturing cost of the heating module 12. In some embodiments shown in the schematic diagrams of the present invention, the heating element 122 is provided as a resistance wire, which has greater elasticity than a heating tube and can therefore be easily deformed to connect to the first mounting plate 121.

[0040] In some possible embodiments, the heating element 122 is wound around and connected to the first mounting plate 121, i.e., the heating element 122 is provided as separate parts in the first sub-cavity 1111 and the second sub-cavity 1112, respectively, i.e., one part of the heating element 122 is provided in the first sub-cavity 1111, and another part of the heating element 122 is provided in the second sub-cavity 1112. By providing one heating element 122 in two sub-cavities at the same time, the assembly cost of the heating module 12 can be reduced, and the turbulent air circulation in the first sub-cavity 1111 and the second sub-cavity 1112 can be used to remove heat from the surface of one heating element 122 at least twice, which is advantageous in terms of higher heat dissipation efficiency, promoting heat exchange between the heating element 122 and the air, and reducing heat accumulation on the surface of the heating element 122.

[0041] 3 and 7, in order to easily explain the installation method of the heating element 122 shown in the schematic diagrams of the present invention, an example in which the heating element 122 is implemented as a resistance wire will be described, and the heating element 122 is wound and connected to the first mounting plate 121 in the second direction N2. By arranging the heating element 122 in this manner, the heating element 122 is stacked along the second direction N2, and the stacking direction of the heating element 122 coincides with the intake direction of the first sub-cavity 1111. As the air enters the first sub-cavity 1111 along the second direction N2, it passes through each layer of the resistance wire in sequence, and each layer of the resistance wire can come into contact with the intake air of the first sub-cavity 1111, thereby improving the heat exchange efficiency of the outer surface of the resistance wire. Referring to FIG. 5, the air from the first sub-cavity 1111 is introduced into the second sub-cavity 1112 along a first direction N1, which is perpendicular to the second direction N2. In this case, the air blowing direction from the first sub-cavity 1111 is perpendicular to the stacking direction of the heating element 122, and the air from the first sub-cavity 1111 to the second sub-cavity 1112 is blown into the second sub-cavity 1112 along the stacking direction perpendicular to the resistance wire. That is, the air blown from the first sub-cavity 1111 can pass between each layer of the resistance wire, thereby providing secondary heat dissipation to the heating element 122, and the air blown from the first sub-cavity 1111 removes heat between each layer of the heating element 122. The intake air and the outlet air work together, with the intake air passing over the surface of the resistance wire in the second direction N2 and the outlet air passing through the gaps between each layer of the resistance wire in the first direction N1, so that the intake air and the outlet air together gradually remove heat from the surface of the heating element 122 and reduce heat accumulation in the heating element 122 in the first sub-cavity 1111. At the same time, because the heating element 122 is an individual component, thermal conduction exists between each part of the heating element 122. After the temperature of the heating element 122 in the first sub-cavity 1111 (upper heating element 122) drops, the heat of the heating element 122 in the second sub-cavity 1112 (lower heating element 122) is transferred to the upper heating element 122 by thermal conduction, which is also beneficial to heat dissipation of the heating element 122 in the second sub-cavity 1112.

[0042] In some embodiments, referring to FIG. 7 , the winding connection position of the heating element 122 connected to the first mounting plate 121 is located within the ventilation area 114, and the winding connection position is a contact position between the heating element 122 and the first mounting plate 121 where heat is likely to accumulate. The heating element 122 is wound and connected to the first mounting plate 121 within the ventilation area 114, and the air flow within the ventilation area 114 is used to remove heat from the winding connection position, thereby reducing heat accumulation at the contact position between the first mounting plate 121 and the heating element 122. Specifically, the first mounting plate 121 is provided with a plurality of through holes, each of which is attached to a respective layer of resistance wire. On the one hand, this makes it easy to provide spacing between each layer of resistance wire, thereby reducing heat transfer between each layer of resistance wire; on the other hand, by utilizing the air flow through each through hole to remove heat from each layer of resistance wire, the heat dissipation efficiency of the resistance wire (heating element 122) can be improved, and the risk of the resistance wire (heating element 122) becoming red-hot or even burning due to overheating can be reduced.

[0043] 3 and 10 , in some embodiments, the volume of the heating element 122 in the first sub-cavity 1111 is larger than the volume of the heating element 122 in the second sub-cavity 1112, i.e., the volume of the upper heating element 122 is larger than the volume of the lower heating element 122. As described above, the suction direction in the first sub-cavity 1111 is perpendicular to the blowing direction, and heat from the upper heating element 122 can be removed twice by using suction and blowing. Furthermore, due to the restriction of the ventilation area 114, air first collects in the first sub-cavity 1111 and then is discharged, resulting in a higher air density within the first sub-cavity 1111. By providing a heating element 122 with a larger volume within the first sub-cavity 1111, the heating element 122 can be in sufficient contact with the higher-density air within the first sub-cavity 1111, improving air heating efficiency and advantageously promoting heat conduction within the upper heating element 122 by using air flowing in multiple directions.

[0044] Specifically, in some possible embodiments, the volume of the upper heating element 122 can be made larger than the volume of the lower heating element 122 by changing the shape of the first mounting plate 121. For example, if the first mounting plate 121 is provided in a cylindrical structure and the central axial surface of the first mounting plate 121 is within the first sub-cavity 1111, the volume of the heating element 122 above the first mounting plate 121 can be made larger than the volume of the heating element 122 below the first mounting plate 121.

[0045] 3 and 10, in some embodiments, the heating module 12 further includes a second mounting plate 123, which is connected to the first mounting plate 121 and abuts against the heating element 122 along the first direction N1. Specifically, the first mounting plate 121 may be provided with a plurality of second mounting plates 123, each of which is arranged perpendicular to the first mounting plate 121, and the outer wall surfaces of the first mounting plate 121 and each of the second mounting plates 123 together form a support position for the heating element 122. In some embodiments shown in the schematic diagrams of the present invention, only one second mounting plate 123 is provided, and the second mounting plate 123 is arranged perpendicular to the first mounting plate 121, i.e., the second mounting plate 123 and the first mounting plate 121 form a cross-shaped engagement structure. On the one hand, the second mounting plate 123 can improve the mounting stability of the heating element 122, and on the other hand, by changing the position or shape of the second mounting plate 123, the volume of the heating element 122 in the first sub-cavity 1111 can be made larger than the volume of the heating element 122 in the second sub-cavity 1112. For example, if the symmetric central axis plane of the second mounting plate 123 is directly transferred into the first sub-cavity 1111 or the second mounting plate 123 is installed in the first sub-cavity 1111, a volume difference will occur in the heating element 122 supported by the second mounting plate 123. Changing the position of the second mounting plate 123 is easier than changing the shape of the first mounting plate 121. The second mounting plate 123 only contacts the inner ring of the heating element 122, not the outer ring of the heating element 122. A cylindrical space is still enclosed inside the wrapped heating element 122, and air can flow through the cylindrical space to remove heat from inside the heating element 122. At the same time, the heating element 122 contacting the second mounting plate 123 expands along the first direction N1, and the resistance wires expand elastically, increasing the pitch of each resistance wire, which is more beneficial to the heat conduction of the heating element 122.

[0046] 3 and 6, in some embodiments, the housing 11 has a hollow air suction section 115, which has an air suction end 1151 and an air blowing end 1152. The air suction area 112 is formed between the air suction end 1151 and the air blowing end 1152, and the air blowing end 1152 is connected to the air cavity 111. That is, the air suction section 115 is a passage-like member having a certain length of space, and the air suction area 112 indicates the passage space within the air suction section 115. Referring to FIG. 5, the blower 10 further includes a fan 13 for generating negative pressure to drive the gas flow. The fan 13 is disposed between the air suction end 1151 and the air blowing end 1152. Under the influence of the blades of the fan 13, the air passing through the fan 13 is accelerated and flows into the first sub-cavity 1111. On the one hand, since the fan 13 is not installed within the air cavity 111, it is less susceptible to the effects of the hot air within the air cavity 111, and the fan 13 is less likely to operate in a high-temperature environment, which is advantageous for extending the service life of the fan 13; on the other hand, since the fan 13 is installed between the air blowing end 1152 and the air suction end 1151 and is located in the air suction area 112 inside the housing 11, the fan 13 is installed adjacent to the first sub-cavity 1111, and the air volume can be collected within the first sub-cavity 1111.

[0047] 5, in some embodiments, a plurality of air outlets 116 are opened on one side of the housing 11, and the opening spaces of each air outlet 116 together form the above-mentioned air blowing region 113, that is, each air outlet 116 communicates with the second sub-cavity 1112. The cross-sectional area of ​​the air outlet 116 is smaller than the cross-sectional area of ​​the second sub-cavity 1112, and therefore, according to the Bernoulli equation, the pressure at the air outlet 116 is smaller than the pressure in the second sub-cavity 1112, and the air in the second sub-cavity 1112 is automatically guided to the air outlet 116 due to the pressure difference. All of the air outlets 116 are located on the same side of the housing 11 and downstream of the second sub-cavity 1112. The second sub-cavity 1112 intensively sends air to the multiple air outlets 116, naturally dividing the airflow. There is no priority in the airflow between the air outlets 116. All of the air outlets 116 are located on the same side of the housing 11 and have approximately equal static pressure. The air volumes sent from the second sub-cavity 1112 to each air outlet 116 are approximately equal, and air is blown out uniformly from each air outlet 116. Since there is no need to provide air guide plates between the air outlets 116 or air guide ducts connecting the air outlets 116, the distance between the air outlets 116 can be shortened. At the same time, there is no need to secure space within the air cavity 111 for providing an air dividing structure such as an air guide plate or air guide duct, which facilitates reducing the volume of the air blower 10.

[0048] In addition, the suction direction of the second sub-cavity 1112 matches the blowing direction of the first sub-cavity 1111, and both flow from top to bottom along the first direction N1. On the other hand, if the air blowing area 113 is located at one end of the second sub-cavity 1112 in the first direction N1, the blowing direction of the second sub-cavity 1112 also flows from top to bottom, the suction direction within the second sub-cavity 1112 matches the blowing direction, and each air blowing outlet 116 is located downstream of the second sub-cavity 1112. In the flow direction of the second sub-cavity 1112, the air is preferentially affected by the pressure difference of the air blowing outlet 116 and is directly diverted, but is rarely diverted indirectly due to collisions with obstacles on the inner wall of the housing 11. The number of times the air is split within the second sub-cavity 1112 correlates with the number of air outlets 116, which is advantageous in maintaining approximately equal airflow rates at each air outlet 116 and improving the user experience.

[0049] 1, when the blower 10 is applied to a stand-type hair dryer, take the example of an application scenario in which the stand-type hair dryer is used to pre-dry long hair. The stand-type hair dryer can use the first air outlet 1161 to dry hair at the back of the head, the second air outlet 1162 to dry hair at the top of the head, and the multiple air outlets 116 can be used to dry hair at different positions of the user, thereby improving hair drying efficiency and enhancing the user experience.

[0050] 4 and 5, in some embodiments, the plurality of air outlets 116 include a first air outlet 1161 and a second air outlet 1162, and the location surrounded by an oval in FIG. 4 is the location of the ventilation area 114. As can be seen from FIG. 4, the ventilation area 114 is at least partially disposed between the first air outlet 1161 and the second air outlet 1162, and the air entering the second sub-cavity 1112 from the ventilation area 114 is not directly discharged through the air outlets 116, but is first diverged in the center of the second sub-cavity 1112 and directed to the first air outlet 1161 and the second air outlet 1162, respectively, so that the air "collects first and then is discharged" within the second sub-cavity 1112. Furthermore, due to the installation position of ventilation area 114, the distances from the two air outlets to ventilation area 114 become approximately equal, and the static pressures of the two air outlets are maintained equal, thereby evenly dividing the air entering second sub-cavity 1112 from ventilation area 114. Referring to the schematic diagram of gas flow shown in Figure 5, the air entering second sub-cavity 1112 from ventilation area 114 is evenly divided at the center of second sub-cavity 1112, with a portion flowing leftward to first air outlet 1161 and another portion flowing rightward to second air outlet 1162, so that the air volumes of first air outlet 1161 and second air outlet 1162 are uniform and large differences in air volume are unlikely to occur.

[0051] Furthermore, when the air blowing region 113 is provided at one end of the heating module 12 in the first direction N1, each of the air outlets 116 is also located at one end of the heating module 12 in the first direction N1. In this case, as can be seen from the above, the second sub-cavity 1112 introduces and exhausts air along the first direction N1. The air flow directions on the upstream and downstream sides of the second sub-cavity 1112 are the same, and the air is preferentially diverted directly due to the pressure difference at the air outlets 116 in the flow direction in the second sub-cavity 1112, and is less likely to be diverted indirectly due to collisions with the inner wall of the housing 11. The number of times the air is diverted within the second sub-cavity 1112 is correlated with the number of air outlets 116, which is advantageous in maintaining approximately equal airflow volumes at each air outlet 116 and improving the user experience.

[0052] 7, the heating element 122 is also provided between the first air outlet 1161 and the second air outlet 1162, and the air in the second sub-cavity 1112 flows toward the first air outlet 1161 and the second air outlet 1162, respectively, and passes through the heating element 122. On the one hand, the heating element 122 in the second sub-cavity 1112 can be brought into sufficient contact with the air, and on the other hand, the air flow can be used to remove heat from the surface of the heating element 122 located in the second sub-cavity 1112, thereby reducing heat accumulation in the heating element 122 in the second sub-cavity 1112.

[0053] 3, in some embodiments, the housing 11 includes an upper case 117 and a lower case 118, and each air outlet 116 is provided in the lower case 118, and the upper case 117 and the lower case 118 together form the air cavity 111 and the air suction section 115, thereby reducing the difficulty of processing and molding the air cavity 111 and the air suction section 115. Compared to an embodiment in which the upper case 117 and the lower case 118 together form the air outlet 116, each air outlet 116 in the embodiments of the present invention is located in the lower case 118, and therefore each air outlet 116 has a complete wall surface, which allows air discharged through the air outlet 116 to be blown directly toward the user, reducing the risk of air leakage from the air outlet 116 and allowing the user to enjoy a larger volume of air being blown out.

[0054] In some embodiments, referring to FIGS. 3 and 5 , the blower 10 further includes a ventilation hood 14, which is disposed at the air suction end 1151 of the air suction section 115. The ventilation hood 14 radially connects the air suction area 112 with the external environment (the mounting cavity 21) and axially separates the air suction area 112 from the external environment (the mounting cavity 21). This allows air to enter the air suction area 112 only along the radial direction of the ventilation hood 14. This configuration changes the suction direction of the air suction area 112, causing the air to enter the air suction area 112 in an approximately "L" shape, thereby reducing noise associated with the air flow. The ventilation hood 14 in this embodiment of the present invention changes the path of the air flowing into the air suction area 112, thereby reducing noise generated within the blower 10 without affecting the normal air flow into the air suction area 112.

[0055] Note that the above-mentioned "axial direction of ventilation hood 14" refers to the direction in which the central axis of ventilation hood 14 is located, i.e., the second direction N2 in Figure 3, and the "radial direction of ventilation hood 14" refers to the direction extending perpendicular to the central axis, i.e., the direction extending perpendicular to the second direction N2.

[0056] 1 and 2, an embodiment of the present invention further provides a stand-type dryer, which includes a blower head 101 and a support 102. The blower head 101 is connected to the support 102, and the support 102 is supported on the ground to free up both hands of a user. The blower head 101 includes the above-mentioned blower duct 10, which extends the service life of the stand-type dryer and reduces heat accumulation within the stand-type dryer.

[0057] In some possible embodiments, the blower head 101 is movably coupled to the support 102 to change the blowing angle of the blower 10 and / or to allow the blower 10 to blow air toward or away from the support 102 as the entire blower head 101 moves. For example, the blower head 101 may be hinged to the support 102 by a universal ball joint, such that driving the blower head 101 to rotate counterclockwise as shown in FIG. 1 causes the blower head 101 to move the blower 10 away from the support 102 to blow air. When the blower head 101 is driven to rotate in the clockwise direction as shown in Fig. 1, the blower head 101 moves the blower tube 10 closer to the support body 102 so that air can be blown out, and in this state, the blower head 101 is adjacent to the side of the support body 102 as shown in Fig. 1, which can be understood as the blower head 101 being in a folded state when viewed from the perspective of Fig. 1, thereby saving the storage space required for the stand-type dryer of the present invention. Of course, the blower head 101 can also be rotated in the forward and backward directions as shown in Fig. 1, so that the air can be blown out in accordance with the user's posture.

[0058] It should be understood that "the blower head 101 is hingedly connected to the support 102 by a universal ball joint" is just one embodiment, and in some possible embodiments, the blower head 101 can also move parallel to the support 102 by an extendable arm. Regardless of the structure by which the blower head 101 and the support 102 are movably connected, the blower head 101 can move relative to the support 102 to change the blowing angle of the blower tube 10 and / or move the blower tube 10 closer to or farther away from the support 102 to blow air. By configuring in this way, the stand-type hair dryer of the present invention can blow air in accordance with the height of different users, and can blow air in accordance with different parts of the same user's head (such as the top or back of the head), improving the user experience.

[0059] In some possible embodiments, the support 102 may be equipped with a lifting mechanism for raising or lowering the blower head 101 to a certain height, thereby accommodating the user's standing or sitting posture or different heights. The lifting mechanism may be realized by structural control, for example, a screw structure that receives external force from the user and allows the user to twist the screw structure to raise or lower the blower head 101. The lifting mechanism may also be realized by electrical sensing control, for example, the support 102 may be equipped with a visual sensing system and / or a height sensing system that detects the height of the user's head and adjusts the support 102 to raise or lower to the corresponding height, thereby automatically realizing human-computer interaction and improving the user experience.

[0060] 11 and 12, the stand-type dryer further includes an outer shell 20 and a circuit board 30. An installation cavity 21 is formed inside the outer shell 20. The air blower 10 is installed in the installation cavity 21, and the installation cavity 21 communicates with an air cavity 111. By providing the outer shell 20 fitted to the outside of the housing 11, the present invention can improve the aesthetic appearance of the air blower head 101 and can insulate the air blower 10 from heat by utilizing the gap between the outer shell 20 and the housing 11. The circuit board 30 is installed in the installation cavity 21 and is used to control the air blowing state of the air blower 10, including, but not limited to, starting and stopping the air blower 10, controlling the air volume of the air blower 10, and controlling the air temperature of the air blower 10. Since the circuit board 30 is installed in the mounting cavity 21 and not in the blower 10, the circuit board 30 operates in a cool air state and is less susceptible to interference from the hot air of the blower 10, which is beneficial to extending the service life of the circuit board 30 and maintaining the stability of the circuit connection, thereby extending the service life of the stand-type dryer and improving the safety of using the stand-type dryer.

[0061] In some embodiments, referring to FIG. 12, the outer shell 20 has an air outlet 22 communicating with the mounting cavity 21, and the air outlet 22 is located adjacent to the air intake area 112 of the blower 10, and the air outlet 22 is for introducing air from the external environment into the air intake area 112 of the blower 10. Specifically, the schematic diagram showing the gas flow in FIG. 12 can be referred to. The circuit board 30 is located on the side of the fresh air inlet 22 away from the blower 10. In some embodiments shown in FIG. 12, when the blower 10 is located to the right of the fresh air inlet 22, the circuit board 30 is located to the left of the fresh air inlet 22. The circuit board 30 is not located between the fresh air inlet 22 and the blower 10, so that it does not interfere with or block the intake of air from the fresh air inlet 22. The circuit board 30 is located away from the blower 10 and is easily exposed to cool air, and heat exchange with the cool air from the fresh air inlet 22 promotes heat dissipation from the circuit board 30 and reduces heat accumulation on the surface of the circuit board 30.

[0062] In some embodiments, referring to Figures 2 and 12, the outer shell 20 further includes a plurality of interlocking airflow nets 23, and the air outlets of each airflow net 23 are arranged in an interlaced manner, thereby changing the flow path of the air entering the mounting cavity 21, thereby reducing the loud noise generated when the air enters the mounting cavity 21 in a straight line and improving comfort during use.

[0063] The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. Those skilled in the art can make various modifications and changes to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention. [Explanation of symbols]

[0064] 101 Blower head 10 Blower tube 11. Housing 111 Air Cavity 1111 1st sub-cavity 1112 Second sub-cavity 112 Air intake area 113 Air blowing area 114 Ventilation area 115 Air intake section 1151 Air intake end 1152 Air outlet end 116 Air outlet 1161 First air outlet 1162 Second air outlet 117 Upper case 118 Lower case 12 Heating Module 121 First mounting plate 122 heating element 123 Second mounting plate 13 Fan 14 Ventilation hood 20 outer shell 21 Mounting cavity 22 Outside air vent 23 Ventilation net 30 Circuit Board 102 Support

Claims

1. A blower comprising: a housing having an air cavity formed therein and an air intake area and an air blowing area communicating with the air cavity, the air intake area being for introducing air into the air cavity and the air blowing area being for discharging air from the air cavity; a heating module for heating air, the heating module being provided within the air cavity, the heating module separating the air cavity into a first sub-cavity and a second sub-cavity, the first sub-cavity communicating with the air intake area and the second sub-cavity communicating with the air blowing area, and a ventilation area being provided in the heating module and / or the housing, the ventilation area communicating between the first sub-cavity and the second sub-cavity.

2. The volume of the first sub-cavity is larger than the volume of the second sub-cavity. The blower according to claim 1 .

3. the air blowing area is provided at one end of the heating module in a first direction, and the air suction area is located at one end of the heating module in a second direction, and the first direction is perpendicular to the second direction. The blower according to claim 1 .

4. The heating module includes: a first mounting plate extending along the second direction, the first mounting plate being provided within the housing and separating the air cavity into the first sub-cavity and the second sub-cavity, the first mounting plate and / or the housing having a ventilation structure that forms the ventilation area; a heating element for heating air, the heating element being provided on the first mounting plate, the heating element being provided in the first sub-cavity and / or the second sub-cavity; The blower according to claim 3.

5. the heating element is wound around and connected to the first mounting plate along the first direction; Alternatively, the heating member is wound around and connected to the first mounting plate along the second direction, Alternatively, the heating element is wound around and connected to the first mounting plate along a third direction, and the third direction is perpendicular to the first direction and the second direction. The blower according to claim 4.

6. a volume of the heating element located in the first sub-cavity is greater than a volume of the heating element located in the second sub-cavity; The blower according to claim 5.

7. The heating module includes: a second mounting plate connected to the first mounting plate, the second mounting plate abutting the heating element along the first direction; The blower according to claim 5.

8. the housing has a hollow air suction section, the air suction section having an air suction end and an air blowing end, the air suction area being formed between the air suction end and the air blowing end, and the air blowing end being connected to the air cavity; The air blower further includes a fan disposed between the air suction end and the air blowing end. The blower according to any one of claims 1 to 7.

9. A plurality of air outlets are opened on one side of the housing, and the air outlets together form the air outlet area. The blower according to any one of claims 1 to 7.

10. The plurality of air outlets include a first air outlet and a second air outlet, and the ventilation area is at least partially provided between the first air outlet and the second air outlet. The blower according to claim 9.

11. A stand-type dryer, a supporting support; A stand-type dryer comprising: a blower head connected to the support, the blower head including the blower tube according to any one of claims 1 to 7.

12. The blower head includes: an outer shell connected to the support, the outer shell having an attachment cavity formed therein, the air blower being disposed within the attachment cavity, the attachment cavity communicating with the air cavity; a circuit board provided in the mounting cavity, the circuit board being for controlling the blowing state of the air blower; The stand-type dryer according to claim 11.

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