Double airflow heat conduction structure and hair dryer using the same

Abstract

To provide a dryer capable of achieving higher air blowing efficiency and a more uniform air blowing temperature, and heating and blowing air to a certain part for a longer time without causing a burn when a user uses the dryer.SOLUTION: The present disclosure relates to a double-duct hot air guide structure and a dryer using the same. The double-duct hot air guide structure includes a shell, a heating module and a blowing module. The shell is provided with an outer sleeve-shaped body and an inner sleeve-shaped body mounted inside the outer sleeve-shaped body. A front end of the outer sleeve-shaped body is matched with a front end of the inner sleeve-shaped body through butting so that an inner air outlet inside the inner sleeve-shaped body correspondingly and an outer air outlet between the outer sleeve-shaped body and the inner sleeve-shaped body correspondingly are formed in a front end of the shell. The heating module is arranged between the outer sleeve-shaped body and the inner sleeve-shaped body. The rear end of the outer sleeve-shaped body is an air intake port, and a storage chamber is formed between the rear end of the outer sleeve-shaped body and the rear end of the inner sleeve-shaped body, with the outer sleeve-shaped body as a wall surface.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to the technical field of hair dryers, and particularly to a double air duct heat conduction structure and a dryer using the same.

Background Art

[0002] A hair dryer is a beauty electrical appliance used for drying and styling hair. However, it may also be used for local drying, heating, and physical therapy in laboratories, physiotherapy rooms, industrial production, calligraphy, etc., and is also called a hair dryer or a dryer. Conventional dryers generally use a high-speed brushless motor to provide a larger air volume and a faster drying speed. Some dryers can automatically adjust the temperature by adding smart constant temperature technology to prevent hair damage caused by overheated air and better protect the hair from damage. In addition to better improving the air supply speed and temperature of the dryer, many manufacturers have added a negative ion function to the dryer. A negative ion dryer can discharge negative ions, reduce static electricity, and make the hair softer. Such a function contributes greatly to the improvement of hair quality.

[0003] However, while conventional hair dryers can automatically adjust the temperature, the uniformity of the air temperature blown out from the dryer is limited by the structure of the heating module and outlet. To make the air temperature more uniform, some dryers have introduced ceramic heating technology. Ceramic dryers use ceramic heating technology to make the air temperature more uniform and reduce damage to the scalp. However, when hot air is blown out from the outlet, the temperature gradually increases from the edge to the center of the outlet, causing localized temperatures to become too high. In particular, with high-speed dryers, this can cause a large high-temperature shock to localized areas of the scalp, making it impossible to blow hot air onto a particular part of the scalp for an extended period of time during use. To solve this problem, conventional technology has offered a solution of providing a wind-blocking structure at the center of the dryer's outlet. However, this wind-blocking structure affects the airflow efficiency, so there is a need to provide a new technological means to solve the above problem. [Overview of the Initiative] [Problems that the invention aims to solve]

[0004] The present invention aims to provide a technical means that can overcome the above-mentioned drawbacks and solve the above-mentioned problems. [Means for solving the problem]

[0005] The double-passage heat conduction structure includes a housing, a heat generation module, and a blower module, wherein the housing has an outer sleeve and an inner sleeve mounted inside the outer sleeve, the front end of the outer sleeve and the front end of the inner sleeve are fitted together such that the front end of the housing has an inner outlet corresponding to the inside of the inner sleeve and an outer outlet corresponding to the space between the outer sleeve and the inner sleeve, the heat generation module is provided between the outer sleeve and the inner sleeve, the rear end of the outer sleeve is an intake port, a housing chamber is formed between the rear end of the outer sleeve and the rear end of the inner sleeve with the outer sleeve as its wall surface, the blower module is mounted inside the housing, a first fluid is formed inside the housing by the blower module that flows in along the intake port and out through the inner outlet, and a second fluid is formed inside the housing by the blower module that flows in along the intake port, passes through the heat generation module, and then flows out along the outer outlet.

[0006] Preferably, the internal sleeve body has a first sleeve portion at its rear end and a first flared portion that extends outward in an arcuate surface along the front end of the first sleeve portion, and the internal air outlet is provided at one end of the internal sleeve body located on the first flared portion.

[0007] Preferably, a plurality of uniformly distributed arc-shaped strips are provided around the inner wall of the first flared portion.

[0008] Preferably, the outer sleeve body includes a second sleeve portion at its front end and a third sleeve portion provided at the rear end of the second sleeve portion, wherein the diameter of the second sleeve portion is larger than the diameter of the third sleeve portion, and a second flared portion is formed at the front end of the third sleeve portion, extending outward with an inclined surface, and the third sleeve portion is connected to the second sleeve portion via the second flared portion.

[0009] Preferably, a locking structure is provided between the second flared portion and the second sleeve portion, and the second flared portion and the second sleeve portion are locked and fixed together by the locking structure.

[0010] Preferably, a fixing groove is provided around the inside of the second flare portion, and a first air guide base is fixedly attached to the second flare portion by the fixing groove, the first air guide base includes an outer edge portion that fits into the fixing groove, a fixing base located inside the outer edge portion, a plurality of first air guide plates provided around the fixing base and integrally connected to the outer edge portion, and a spacer ring provided between the fixing base and the outer edge portion and integrally connected to the first air guide plates, the first air guide base is fixed inside the second flare portion by engagement between the outer edge portion and the fixing groove, the internal sleeve body is fixedly connected to the fixing base, and the spacer ring corresponds to the internal sleeve body and the external sleeve body, respectively, by dividing the second flare portion into two spaces, an inner and an outer space.

[0011] Preferably, a plurality of second air guide plates are molded around the rear end of the internal sleeve body, extending inward and toward the axis, and a connecting rod corresponding to the axis of the internal sleeve body is integrally molded at the rear end of the internal sleeve body by the second air guide plates, and the internal sleeve body and the first air guide base are screw-connected via the fixed base and the connecting rod by forming a screw-fit structure between the fixed base and the connecting rod.

[0012] Preferably, a second air guide base is fixedly attached to the front end of the outer sleeve body along its inner side, and the outer sleeve body and the inner sleeve body are fixed and supported by the second air guide base, and the outer outlet is provided on the second air guide base.

[0013] Preferably, a first insulating layer corresponding to the heat-generating module is provided on the inside of the outer sleeve body, and a second insulating layer corresponding to the heat-generating module is provided on the outside of the inner sleeve body.

[0014] Preferably, the heating module includes at least one heating film and heat dissipation covers provided on both the inner and outer sides of the heating film, wherein the surface of the heat dissipation cover facing away from the heating film has a fin-like structure, and if a plurality of heating films are provided, the plurality of heating films are arranged circumferentially from the inside to the outside, and two adjacent heating films engage with the heat dissipation cover, and the engaged heat dissipation cover forms a honeycomb-like heat dissipation structure due to the fin-like structure.

[0015] The dryer uses one of the double-airflow heat conduction structures described above. [Effects of the Invention]

[0016] Compared to the prior art, the present invention has the following beneficial effects.

[0017] By providing an internal sleeve and an external sleeve so that their internal and external parts fit together, a first fluid that can flow out along the internal outlet and a second fluid that can flow out along the external outlet are formed. Both the first and second fluids are generated by the blower module. The first fluid does not pass through the heat-generating module, thus achieving a low-temperature blowing effect. The second fluid flows through the heat-generating module, is heated by the heat-generating module, and then achieves a high-temperature blowing effect. When this structure, in which low-temperature blowing is provided inside high-temperature blowing, is applied to a hair dryer, when the hair dryer is operating, the high-temperature air blown out from the external outlet and the low-temperature air blown out from the internal outlet mix, lowering the air temperature in the middle. This makes the temperature of the air blown out along the hair dryer's outlets uniform, preventing excessive heat concentration in the middle and avoiding burns to the user's scalp during use. Furthermore, when using an external and internal airflow structure, the heating of a specified fluid can be achieved by separating the fluid generated by the airflow module, which flows in along the intake and is then blown out from the outlet. This method eliminates the need for a blocking structure to block the air blown out from the middle of the dryer's outlet, thereby achieving higher airflow efficiency and a more uniform airflow temperature when applied to high-speed dryers. This allows users to heat and blow air onto a specific area for a longer period of time without getting burned.

[0018] Additional aspects and advantages of the present invention are partially shown in the following description, and in part are apparent from the following description or understood through the practice of the present invention. [Brief explanation of the drawing]

[0019] To more clearly describe embodiments of the present invention or the technical means of the prior art, the following drawings necessary for describing embodiments or the prior art will be briefly described. However, it is clear that the drawings described are only a part of embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without requiring any creative work.

[0020] [Figure 1]This is a schematic configuration diagram of the present invention. [Figure 2] This is a schematic exploded configuration diagram of the present invention. [Figure 3] This is a schematic cross-sectional configuration diagram of the present invention. [Figure 4] This is a schematic configuration diagram of the fluid of the present invention. [Figure 5] This is a schematic configuration diagram of the internal sleeve body of the present invention. [Figure 6] This is a schematic configuration diagram of the front end face of the present invention. [Figure 7] This is a schematic configuration diagram of the first air guide base of the present invention. [Figure 8] This is a schematic configuration diagram of the heat generating module of the present invention.

Embodiments for Carrying Out the Invention

[0021] Hereinafter, the technical means in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained on the premise that those skilled in the art do not perform creative labor all belong to the protection scope of the present invention.

[0022] As shown in FIGS. 1 to 8, in the embodiment of the present invention, the heat conduction structure with a double air duct includes a housing 10, a heat generating module 20, and a blower module 30. The housing 10 has an external sleeve body 11 and an internal sleeve body 12 attached inside the external sleeve body 11. The front end of the external sleeve body 11 and the front end of the internal sleeve body 12 are fitted so that the front end of the housing 10 has an inner air outlet 13 corresponding to the inside of the internal sleeve body 12 and an outer air outlet 14 corresponding to the space between the external sleeve body 11 and the internal sleeve body 12. The heat generating module 20 is provided between the external sleeve body 11 and the internal sleeve body 12. The rear end of the outer sleeve body 11 is an air intake port 15, and a housing chamber 16 is formed between the rear end of the outer sleeve body 11 and the rear end of the inner sleeve body 12, with the outer sleeve body 11 as the wall surface. The blower module 30 is installed inside the housing chamber 16, and a first fluid 17 is formed inside the housing 10 by the blower module 30, which flows in along the air intake port 15 and then flows out from the inner outlet port 13. A second fluid 18 is formed inside the housing 10 by the blower module 30, which flows in along the air intake port 15, passes through the heat generation module 20, and then flows out along the outer outlet port 14.

[0023] In the above technical means, an internal sleeve body 12 and an external sleeve body 11 are provided so that the internal and external parts are fitted together, thereby forming a first fluid 17 that can flow out along the internal outlet 13 and a second fluid 18 that can flow out along the external outlet 14. Both the first fluid 17 and the second fluid 18 are generated by the blower module 30. The first fluid 17 does not pass through the heat generation module 20, thus achieving a low-temperature blowing effect. The second fluid 18 flows through the heat generation module 20, is heated by the heat generation module 20, and then achieves a high-temperature blowing effect. When this structure, in which low-temperature blowing is provided inside high-temperature blowing, is applied to a hair dryer, when the hair dryer is operating, the high-temperature air blown out from the external outlet 14 and the low-temperature air blown out from the internal outlet 13 mix, thereby lowering the air temperature in the middle, making the temperature of the air blown out along the outlet of the hair dryer uniform, and preventing excessive heat concentration in the middle that could burn the user's scalp during use. Furthermore, when using an external and internal airflow structure, the heating of a specified fluid can be achieved by separating the fluid generated by the airflow module 30, which flows in along the intake port 15 and is then blown out from the outlet. This method eliminates the need for a blocking structure to block the air blown out from the middle of the dryer's outlet, thereby achieving higher airflow efficiency and a more uniform airflow temperature when applied to high-speed dryers. This allows users to use the dryer without getting burned and to heat a specific area for a longer period of time.

[0024] As shown in Figures 2-4, in this embodiment, in order to improve the airflow effect of the dryer, ensure that more fluid generated by the airflow module 30 flows through the heat generation module 20, and achieve a high-speed blowing effect on the fluid in this part, the internal sleeve body 12 is provided having a first sleeve portion 121 at the rear end and a first flare portion 122 that extends outward in an arc shape along the front end of the first sleeve portion 121, and the internal air outlet 13 is provided at one end of the internal sleeve body 12 located at the first flare portion 122. By providing the first sleeve portion 121 and the first flare portion 122, the flow velocity of the first fluid 17 is reduced, and the fluid can concentrate on the second fluid 18 when it flows out from the outer outlet 14, ensuring that the flow velocity of the second fluid 18 is much faster than that of the first fluid 17. As the first fluid 17 flows out along the inner outlet 13, it mainly acts as a coolant for the middle portion of the second fluid 18 and cannot directly act on the user's hair, otherwise the middle portion of the fluid would not be able to achieve a high-temperature drying effect. Therefore, the fluid that ultimately acts on the user's scalp is partly the outer circumferential portion of the second fluid 18 and partly the inner circumferential portion of the second fluid 18 that has been cooled by the first fluid 17. As a result, the design of this structure allows for more effective control of the airflow effect, making it easier to achieve the required temperature uniformity effect. Furthermore, multiple uniformly distributed arc-shaped strips 123 are provided around the inner wall of the first flare section 122, achieving the effect of directing the first fluid 17 outward in a spiral manner, thereby allowing the first fluid 17 to act more effectively on the second fluid 18.

[0025] As shown in Figures 2-3, in this embodiment, the outer sleeve body 11 includes a second sleeve portion 111 at the front end and a third sleeve portion 112 provided at the rear end of the second sleeve portion 111. The diameter of the second sleeve portion 111 is larger than the diameter of the third sleeve portion 112. A second flare portion 113 is formed at the front end of the third sleeve portion 112, extending outward with an inclined surface. The third sleeve portion 112 is connected to the second sleeve portion 111 via the second flare portion 113. This configuration makes the overall structural assembly more flexible. A locking structure 114 is provided between the second flare portion 113 and the second sleeve portion 111, and the second flare portion 113 and the second sleeve portion 111 are locked and fixed together by the locking structure 114, making assembly easier.

[0026] As shown in Figures 2, 3, 5, and 7, in this embodiment, a fixing groove 115 is provided around the inside of the second flare portion 113, and the first air guide base 40 is fixed and attached to the second flare portion 113 by the fixing groove 115. The first air guide base 40 has an outer edge portion 41 that fits into the fixing groove 115, a fixing base 42 located inside the outer edge portion 41, a plurality of first air guide plates 43 that are provided around the fixing base 42 and are integrally connected to the outer edge portion 41, and a fixing base The first air guide base 40 includes a spacer ring 44 that is positioned around the base 42 and the outer edge portion 41 and is integrally connected to the first air guide plate 43. The first air guide base 40 is fixed within the second flare portion 113 by engagement between the outer edge portion 41 and the fixing groove 115. The internal sleeve body 12 is fixedly connected to the fixing base 42. The spacer ring 44 corresponds to the internal sleeve body 12 and the external sleeve body 11, respectively, by dividing the second flare portion 113 into two spaces, an inner and an outer space. By providing the first air guide base 40, the strength of the connection between the outer sleeve body 11 and the inner sleeve body 12 is ensured. Specifically, a plurality of second air guide plates 124 are molded around the rear end of the inner sleeve body 12, extending inward and toward the axis. A connecting rod 125 corresponding to the axis of the inner sleeve body 12 is integrally molded at the rear end of the inner sleeve body 12 by the second air guide plates 124. The fixing base 42 and the connecting rod 125 form a screw-fit structure, thereby screw-connecting the inner sleeve body 12 and the first air guide base 40 via the fixing base 42 and the connecting rod 125.

[0027] As shown in Figures 1-3, in this embodiment, a second air guide base 50 is fixedly attached to the front end of the outer sleeve body 11 along its inner side, and the outer sleeve body 11 and the inner sleeve body 12 are fixed and supported by the second air guide base 50. The outer outlet 14 is provided on the second air guide base 50, which makes the fitting between the outer sleeve body 11 and the inner sleeve body 12 stronger and more reliable, and also ensures the air blowing effect between the outer sleeve body 11 and the inner sleeve body 12.

[0028] As shown in Figures 2-3, in this embodiment, a first heat insulating layer 60 corresponding to the heat heating module 20 is provided on the inside of the outer sleeve body 11, and a second heat insulating layer 70 corresponding to the heat heating module 20 is provided on the outside of the inner sleeve body 12, thereby preventing heat generated from the heat heating module 20 from being guided out to the outside along the housing 10. In order to produce a high heat heating effect and to adequately serve the purpose of providing the first fluid 17 and the second fluid 18, as shown in Figures 3 and 8, the heat heating module 20 includes at least one heat heating film 21 and heat dissipation covers 22 provided on both the inside and outside sides of the heat heating film 21, respectively. The surface of the heat dissipation cover 22 facing away from the heat heating film 21 has a fin-like structure. When multiple heat heating films 21 are provided, the multiple heat heating films 21 are arranged circumferentially from the inside to the outside, and two adjacent heat heating films 21 are engaged by the heat dissipation cover 22. The engaged heat dissipation cover 22 forms a honeycomb-like heat dissipation structure due to its fin-like structure.

[0029] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be realized in other specific forms without departing from the spirit or fundamental features of the invention. Therefore, in all respects, the embodiments should be considered illustrative and non-limiting, and the scope of protection of the present invention is limited by the appended claims, not limited to the above description, and it is intended that all variations within the meaning and scope of equivalent requirements falling within the claims be included in the present invention. [Explanation of symbols]

[0030] 10 Housing 11. External sleeve 111 Second Sleeve Section 112 Third Sleeve Section 113 Second flare section 114 Locking structure 115 Fixed groove 12 Internal sleeve 121 First Sleeve Section 122 First flare section 123 Arc-shaped strip 124 Second wind deflector 125 connecting rod 13 Inner air outlet 14 External air outlet 15 Air intake 16 Confinement Rooms 17 First fluid 18 Second fluid 20 Heating Modules 21 Heating membrane 22 Heat dissipation cover 30 Blower Modules 40. First air guide base 41 Outer edge 42 Fixed base 43. First air guide plate 44 Spacer rings 50. Second wind guide base 60. First insulation layer 70 Second insulation layer

Claims

1. Including the housing, heating module and blower module, The housing has an outer sleeve body and an inner sleeve body installed inside the outer sleeve body. The front end of the outer sleeve and the front end of the inner sleeve are fitted together such that the front end of the housing has an inner outlet corresponding to the inside of the inner sleeve and an outer outlet corresponding to the space between the outer sleeve and the inner sleeve. The heat generation module is provided between the outer sleeve and the inner sleeve. The rear end of the aforementioned outer sleeve body is an air intake port. A storage chamber is formed at the rear end of the outer sleeve body. The aforementioned ventilation module is installed in the housing chamber. A first fluid is formed inside the housing, which flows in along the air intake by the blower module, does not pass through the heat generation module, and flows out from the internal outlet. A second fluid is formed inside the housing, which flows in along the air intake by the blower module, passes through the heat generation module, and then flows out along the outer outlet. The heat generation module is located in front of the air blower module. The internal sleeve body has a first sleeve portion at its rear end and a first flared portion that extends outward along the front end of the first sleeve portion, forming an arcuate surface. The aforementioned internal air outlet is provided at one end of the internal sleeve body located at the first flared portion, Multiple uniformly distributed arc-shaped strips are provided around the inner wall of the first flared portion. A heat conduction structure with a double airflow channel, characterized by the above.

2. The external sleeve body includes a second sleeve portion at the front end and a third sleeve portion provided at the rear end of the second sleeve portion. The diameter of the second sleeve portion is larger than the diameter of the third sleeve portion. A second flared portion is formed at the front end of the third sleeve portion, extending outward with an inclined surface. The third sleeve portion is connected to the second sleeve portion via the second flare portion. The heat conduction structure with a double air passage according to feature 1.

3. A locking structure is provided between the second flare portion and the second sleeve portion. The second flare portion and the second sleeve portion are locked and fixed together by the locking structure. The heat conduction structure with a double air passage according to feature 2.

4. A fixing groove is provided around the inside of the second flared portion. The first air guide base is fixed and attached to the second flared portion by the fixing groove. The first air guide base includes an outer edge portion that fits into the fixing groove, a fixing base located inside the outer edge portion, a plurality of first air guide plates arranged around the fixing base and integrally connected to the outer edge portion, and a spacer ring arranged between the fixing base and the outer edge portion and integrally connected to the first air guide plates. The first air guide base is fixed within the second flare portion by engagement between the outer edge portion and the fixing groove, The internal sleeve body is fixedly connected to the fixed base. The spacer ring divides the second flared portion into two spaces, an inner and an outer space, so that the inner sleeve body and the outer sleeve body correspond to each other. The heat conduction structure with a double air passage according to feature 2.

5. At the rear end of the aforementioned internal sleeve body, a plurality of second air guide plates are molded around it, extending inward and toward the axis. At the rear end of the internal sleeve body, a connecting rod corresponding to the axis of the internal sleeve body is integrally molded by the second air guide plate. The fixed base and the connecting rod are connected by a screw fitting structure, so that the internal sleeve and the first air guide base are screw-connected via the fixed base and the connecting rod. The double-airflow heat conduction structure according to feature 4.

6. A second air guide base is fixedly attached to the front end of the outer sleeve body, along its inner side. The outer sleeve and the inner sleeve are fixed and supported by the second air guide base. The aforementioned outer outlet is provided on the second air guide base, The double-airflow heat conduction structure according to feature 4.

7. A first heat insulating layer corresponding to the heat generating module is provided on the inside of the outer sleeve body. A second insulating layer corresponding to the heat-generating module is provided on the outside of the internal sleeve body. The heat conduction structure with a double air passage according to feature 1.

8. The heat-generating module includes at least one heat-generating film and heat-dissipating covers provided on both the inner and outer sides of the heat-generating film, The surface of the heat dissipation cover facing away from the heat-generating film has a fin-like structure. When multiple heating films are provided, the multiple heating films are arranged circumferentially from the inside out, and two adjacent heating films are engaged by the heat dissipation cover, and the engaged heat dissipation cover forms a honeycomb-like heat dissipation structure with the fin-like structure. The double-airflow heat conduction structure according to feature 7.

9. Using the double airflow heat conduction structure described in any one of claims 1 to 8, A hair dryer characterized by the following features.

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