Hair dryer

Abstract

The utility model discloses a hair drier which comprises a main body and a handle connected with the main body, and further comprises a first fluid path and a second fluid path. The first fluid path comprises a first air inlet, a first air outlet and a first fluid channel communicated with the first air inlet and the first air outlet. The second fluid path comprises a second air inlet, a second air outlet and a second fluid channel communicated with the second air inlet and the second air outlet. The first fluid channel and the second fluid channel are mutually independent; a first fan is arranged in the first fluid channel, and the first fan is arranged in the main body; and a second fan is arranged in the second fluid channel and is arranged in the handle. The blower further comprises a first circuit board and a second circuit board, and at least part of the second circuit board is arranged in the second fluid channel. The first circuit board is arranged above the first fan, and the second circuit board is arranged below the second fan.

Description

TECHNICAL FIELD

[0001] The utility model relates to hair dryer technical field especially relates to a hair dryer. BACKGROUND

[0002] Hair dryer generally includes fan and the heating wire in the fan downstream air duct, when the heating wire and fan work simultaneously, can heat the high speed airflow produced by fan, can export the hot air. When the fan works, the heating wire does not work, can produce high speed normal temperature airflow. Of course, the heating wire can be controlled to adjust the hair dryer blowing temperature.

[0003] In prior art, due to the size limitation of hair dryer, it is difficult to use high-power fan, so the general hair dryer wind force is relatively small, when the user dries hair (especially long hair), it will need relatively long time. UTILITY MODEL CONTENTS

[0004] In view of the above-mentioned technical deficiencies, the utility model provides a hair dryer, adopts two fans, and can improve the air output of hair dryer by ingenious structure arrangement under the condition of limited volume increase.

[0005] On the one hand, the utility model provides a hair dryer, which comprises a main body and a handle connected with the main body, and further comprises:

[0006] a first fluid path comprising a first air inlet, a first air outlet and a first fluid channel connecting the first air inlet and the first air outlet;

[0007] a second fluid path comprising a second air inlet, a second air outlet and a second fluid channel connecting the second air inlet and the second air outlet;

[0008] Wherein, the first fluid channel and the second fluid channel are independent of each other; the first fluid channel is provided with a first fan, and the first fan is arranged in the main body; the second fluid channel is provided with a second fan, and the second fan is arranged in the handle;

[0009] The hair dryer further comprises a first circuit board and a second circuit board, and at least part of the second circuit board is arranged in the second fluid channel; the first circuit board is arranged above the first fan, and the second circuit board is arranged below the second fan.

[0010] Optionally, the main body comprises a main body inner shell and a main body outer shell arranged on the periphery of the main body inner shell, a first mounting space is defined between the main body inner shell and the main body outer shell, and the first circuit board is mounted in the first mounting space.

[0011] Optionally, the first circuit board is disposed outside the first fluid channel.

[0012] Optionally, the second circuit board is disposed in the second fluid channel at the junction of the body and the handle.

[0013] Optionally, a first heater is provided in the first fluid channel, and a second heater is provided in the second fluid channel, both of which are located within the main body.

[0014] Optionally, the first heater is disposed at the first air outlet, the second heater is disposed at the second air outlet, and the first heater is disposed above the second heater in the vertical direction.

[0015] Optionally, in the vertical direction, the central axis of the first heater is higher than the central axis of the first fan, and the central axis of the second heater is lower than the central axis of the first fan.

[0016] Optionally, the main body inner shell includes a first inner shell, a second inner shell, and a front inner shell, the front inner shell defining the first air outlet and the second air outlet, and the main body outer shell includes a front outer shell, a middle outer shell, and a rear outer shell, wherein the rear outer shell defines a first air inlet.

[0017] Optionally, a portion of the first fluid channel and a portion of the second fluid channel are defined between the first inner shell and the second inner shell, with the first fluid channel disposed above the second fluid channel.

[0018] Optionally, the handle includes an inner handle housing and an outer handle housing, and the second fan is disposed within a receiving space defined by the inner handle housing.

[0019] The hair dryer provided by this utility model includes a main body and a handle connected to the main body. The hair dryer also includes a first fluid path and a second fluid path. The first fluid path includes a first air inlet, a first air outlet, and a first fluid channel connecting the first air inlet and the first air outlet. The second fluid path includes a second air inlet, a second air outlet, and a second fluid channel connecting the second air inlet and the second air outlet. The first fluid channel and the second fluid channel are independent of each other; a first fan is disposed within the first fluid channel and is located within the main body; a second fan is disposed within the second fluid channel and is located within the handle. The hair dryer also includes a first circuit board and a second circuit board, with at least a portion of the second circuit board disposed within the second fluid channel; the first circuit board is located above the first fan, and the second circuit board is located below the second fan. Distributing the two circuit boards above and below the first fan effectively solves the problem of insufficient space. This increases the airflow of the hair dryer while maintaining its compact size. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a hair dryer according to one embodiment of the present invention;

[0021] Figure 2 A schematic diagram of a hair dryer from another angle;

[0022] Figure 3 for Figure 1 Cross-sectional view along the AA direction;

[0023] Figure 4 for Figure 1 Cross-sectional view at another angle along the AA direction;

[0024] Figure 5 This is an exploded view of the structure of a hair dryer in one embodiment;

[0025] Figure 6 This is a schematic diagram of the structure of a hair dryer after concealing the main body shell and the handle shell in one embodiment;

[0026] Figure 7 This is a structural diagram of the hair dryer with the main body and handle housings hidden from another angle. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indication, the directional indication is only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] refer to Figures 1-7 The figure shows a hair dryer 100, including a main body 1 and a handle 2 connected to the main body 1. The handle 2 is equipped with a switch button, which allows the user to turn the hair dryer 100 on / off and adjust the wind speed and air temperature of the hair dryer 100.

[0032] To increase airflow, the hair dryer 100 of this application provides two independent fluid paths, each capable of delivering air independently. Specifically, the hair dryer 100 includes a first fluid path 3 and a second fluid path 4, both independent of each other. The first fluid path 3 includes a first air inlet 31, a first air outlet 32, and a first fluid channel 33 connecting the first air inlet 31 and the first air outlet 32. The second fluid path 4 includes a second air inlet 41, a second air outlet 42, and a second fluid channel 43 connecting the second air inlet 41 and the second air outlet 42. The first fluid channel 33 and the second fluid channel 43 are independent of each other. A first fan 5 is disposed within the first fluid channel 33, and the first fan 5 is located within the main body 1. A second fan 6 is disposed within the second fluid channel 43, and the second fan 6 is located within the handle 2. By placing one fan within the handle 2 and the other within the main body 1, the space of the hair dryer 100 can be fully utilized, making the structure of the hair dryer 100 more compact. A first heater 9 is installed in the first fluid channel 33, and a second heater 10 is installed in the second fluid channel 43. Both the first heater 9 and the second heater 10 are installed inside the main body 1. The first heater 9 is installed at the first air outlet 32, and the second heater 10 is installed at the second air outlet 42. In the vertical direction, the first heater 9 is installed above the second heater 10.

[0033] refer to Figures 3-4 To control the hair dryer 100, the hair dryer 100 also includes a first circuit board 7 and a second circuit board 8. The first circuit board 7 can be a power supply board, whose main function is to provide a stable power supply for electronic devices. It typically contains voltage conversion circuits that can convert the input voltage into the specific voltage required by the device. The design of the power supply board usually includes switching power supplies and coupling transformer power supplies, and features small size, light weight, and high efficiency. The second circuit board 8 can be a circuit board, which (also known as a printed circuit board, PCB) is mainly used for electrical connections and support for electronic components. It realizes the function of the circuit by printing conductive lines and mounting electronic components on an insulating substrate. The circuit board can be designed as a single-sided, double-sided, or multi-layer structure to meet different circuit design requirements. Users can control the fan and heater, etc., through the second circuit board 8.

[0034] refer to Figures 5-7The figure shows the specific structure of the hair dryer 100. The main body 1 includes an inner shell 11 and an outer shell 12 disposed around the outer periphery of the inner shell 11. The inner shell 11 includes a first inner shell 13, a second inner shell 14, and a front inner shell 15. The front inner shell 15 defines a first air outlet 32 ​​and a second air outlet 42. The first inner shell 13, the second inner shell 14, and the front inner shell 15 can be integrally molded. The first inner shell 13 and the second inner shell 14 are fastened together, and then the front inner shell 15 is installed in front of the first inner shell 13 and the second inner shell 14. The first inner shell 13 and the second inner shell 14, when fastened together, define a fluid channel. A portion of the first fluid channel 33 and a portion of the second fluid channel 43 are defined between the first inner shell 13 and the second inner shell 14. The first fluid channel 33 is disposed above the second fluid channel 43. The first fluid channel 33 penetrates the main body 1; that is, the first air inlet 31 is disposed at the rear of the main body 1, and the first air outlet 32 ​​is disposed at the front of the main body 1.

[0035] The main body shell 12 includes a front shell 16, a middle shell 17, and a rear shell 18, wherein the rear shell 18 defines a first air inlet 31. The middle shell 17 is generally molded. During installation, the installed main body inner shell 11 is first installed into the middle shell 17, and then the front shell 16 and the rear shell 18 are installed.

[0036] Since the second circuit board 8 has many heat-generating components, it generates a significant amount of heat, thus requiring heat dissipation. To improve the heat dissipation effect of the second circuit board 8, at least a portion of the second circuit board 8 is disposed within the second fluid channel 43; the first circuit board 7 is disposed above the first fan 5, and the second circuit board 8 is disposed below the second fan 6. By placing both circuit boards within the main body 1, and respectively above and below the first fan 5, space can be effectively saved.

[0037] A first mounting space is defined between the inner shell 11 and the outer shell 12, and the first circuit board 7 is mounted within this first mounting space. Since the first circuit board 7 is a power supply board, it generates relatively little heat during operation and does not require separate cooling; therefore, the first circuit board 7 does not need to be placed within the first fluid channel 33. Placing the first circuit board 7 within the first fluid channel 33 would likely increase noise. To reduce noise, the first circuit board 7 is positioned outside the first fluid channel 33.

[0038] The handle 2 includes an inner handle shell 19 and an outer handle shell 20. The second fan 6 is disposed within the receiving space defined by the inner handle shell 19. The inner handle shell 19 is generally composed of two parts, which are fastened together and jointly define a portion of the second fluid channel 43. The second fan 6 is disposed within this portion of the second fluid channel 43. By placing the second fan 6 inside the handle 2, the volume of the main body 1 can be effectively reduced, making the entire hair dryer 100 more compact. During installation, the inner handle shell is installed onto the main body 1, and then the outer handle shell 20 is installed onto the inner handle shell 19, and then fixed onto the main body 1.

[0039] refer to Figure 3 and 4 The inner shell 11 of the main body defines at least a portion of the first fluid channel 33 and a portion of the second fluid channel 43, while the inner shell 19 of the handle defines the remaining portion of the second fluid channel 43. The portion of the second fluid channel 43 defined by the handle 2 and the portion of the second fluid channel 43 defined by the main body 1 together form a complete fluid channel. The second circuit board 8 is a control board. Because it integrates functions such as controlling the first fan 5, the second fan 6, the first heater 9, and the second heater 10, the second circuit board 8 has a large number of integrated components. During the operation of the blower 100, it generates significant heat. If it is not cooled down, it may burn out or frequently trigger protection mechanisms, affecting user operation. To make the structure more robust, the second circuit board 8 is located within the second fluid channel 43 at the junction of the main body 1 and the handle 2.

[0040] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A hair dryer, comprising a body and a handle connected to said body, characterized in that, The hair dryer also includes: The first fluid path includes a first air inlet, a first air outlet, and a first fluid channel connecting the first air inlet and the first air outlet. The second fluid path includes a second air inlet, a second air outlet, and a second fluid channel connecting the second air inlet and the second air outlet; The first fluid channel and the second fluid channel are independent of each other; a first fan is provided in the first fluid channel and is located inside the main body; a second fan is provided in the second fluid channel and is located inside the handle. The hair dryer further includes a first circuit board and a second circuit board, with at least a portion of the second circuit board disposed within the second fluid channel; the first circuit board is disposed above the first fan, and the second circuit board is disposed below the second fan.

2. The hair dryer as described in claim 1, characterized in that, The main body includes an inner shell and an outer shell disposed outside the inner shell. A first mounting space is defined between the inner shell and the outer shell, and the first circuit board is mounted in the first mounting space.

3. The hair dryer as described in claim 1, characterized in that, The first circuit board is disposed on the outside of the first fluid channel.

4. The hair dryer as described in claim 1, characterized in that, The second circuit board is disposed in the second fluid channel at the junction of the main body and the handle.

5. The hair dryer as described in any one of claims 1-4, characterized in that, A first heater is provided in the first fluid channel, and a second heater is provided in the second fluid channel. Both the first heater and the second heater are located within the main body.

6. The hair dryer as described in claim 5, characterized in that, The first heater is located at the first air outlet, and the second heater is located at the second air outlet. In the vertical direction, the first heater is located above the second heater.

7. The hair dryer as described in claim 5, characterized in that, In the vertical direction, the central axis of the first heater is higher than the central axis of the first fan, and the central axis of the second heater is lower than the central axis of the first fan.

8. The hair dryer as described in claim 2, characterized in that, The main body inner shell includes a first inner shell, a second inner shell, and a front inner shell. The front inner shell defines the first air outlet and the second air outlet. The main body outer shell includes a front outer shell, a middle outer shell, and a rear outer shell. The rear outer shell defines a first air inlet.

9. The hair dryer as described in claim 8, characterized in that, A portion of the first fluid channel and a portion of the second fluid channel are defined between the first inner shell and the second inner shell, with the first fluid channel disposed above the second fluid channel.

10. The hair dryer as described in claim 1, characterized in that, The handle includes an inner handle shell and an outer handle shell, and the second fan is disposed within the receiving space defined by the inner handle shell.

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