WO2020143508A1 - Electric hair dryer that is comfortable to use - Google Patents

Abstract

An electric hair dryer that is comfortable to use, which relates to the field of household appliances. In order to solve the problem in which hair is frizzy and dry after being blow dried, the electric hair dryer comprises a housing assembly (1) provided with a housing (101) and a handle assembly (2) connected to the housing (101); the electric hair dryer also comprises a fan unit (3) and a heating unit (4) disposed inside of the housing (101), the fan unit (3) being used to suction air flow from an air inlet (5) of the electric hair dryer to enter an inner part of the housing (101); the heating unit (4) comprises a heat insulation piece (401) that has a hollow channel; the housing (101) is also internally provided with an inner barrel (19); the electric hair dryer comprises a first cold air flow path (6) through which cold air flow passes and that is defined by the housing (101) and the inner barrel (19), a second cold air flow path (7) of through which cold air flow passes and that is defined by the heat insulation piece (401), and a hot air flow path (8) that is defined by the inner barrel (19) and the heat insulation piece (401); and the air flow at the inner part of the housing (101) passes through the first cold air flow path (6), the hot air flow path (8) and the second cold air flow path (7) and then is blown out from respective air outlets respectively. The present invention is capable of ensuring the hydration and glossiness of hair while blow drying the hair.

Description

A comfortable hair dryer

cross reference

This disclosure requires the priority of a Chinese patent application with the application number 201910024169.3, titled "A Comfortable Hair Dryer," filed on January 10, 2019, the entire contents of which are incorporated herein by reference.

Technical field

The invention relates to the field of household appliances, in particular to a hair dryer which is comfortable to use.

Background technique

Existing electric hair dryers generally include a fan unit and a heating unit provided inside the housing. An air inlet is provided at the rear end of the housing and an air outlet is provided at the front end of the housing. The fan unit is used to suck airflow into the housing from the air inlet and blow out from the air outlet , The heating unit is used to heat the airflow.

In the prior art, in order to solve the problem of hot hands on the surface of the casing, the hot air in the middle of the air outlet is uniform, and there is a ring of cold air on the periphery, which is conducive to hair styling and reduces damage to the hair quality.

In another prior art, the heating unit includes a heat insulating member, a liquid supply pipe is provided in the heat insulating member, a part of the air flow generated by the fan unit passes through the inner side of the heat insulating member, and the inner side of the hot air is cold wind, the purpose of which is to provide the heat insulating member The liquid supply pipe dissipates heat to prevent the internal liquid from leaking from the liquid supply pipe due to the expansion of the temperature of the hot air and the expansion of the liquid.

In the actual use of the hair dryer, the hair is easy to frizz and the scalp is dry after drying, especially for short hair. After the hair is dried, the tip of the hair will be turned out. You need to use a curling stick or a straight hair stick to style the hair to achieve the ideal Effect. One method to solve this problem is to add a negative ion module or a water ion module to the hair dryer. This method will increase the complexity of the control circuit and increase the cost. In addition, when the hot air flow is blown out from the air outlet, the temperature of the air outlet will increase significantly. Generally, the electric hair dryer and the air nozzle are used together to achieve the purpose of increasing or decreasing the wind speed and modeling. The temperature of the connection between the air nozzle and the hair dryer is effectively reduced. After use, the connection between the air nozzle and the hair dryer is hot, which is not convenient for the user to store.

Summary of the invention

In order to solve the above problems, the present invention provides a comfortable hair dryer.

The technical solution of the present invention is:

A comfortable hair dryer includes a shell component with a shell and a handle component connected with the shell;

The electric hair dryer further includes a fan unit and a heating unit provided in the housing. The fan unit is used to draw airflow from the air inlet of the electric hair dryer into the interior of the housing;

Wherein, the heating unit includes a heat insulation member having a hollow channel, an inner cylinder is further provided in the outer casing, and the electric hair dryer includes a first cold air flow path defined by the outer casing and the inner cylinder through the cold air flow, insulated by heat The second cold air flow path through the cold air flow defined by the component, and the hot air flow path defined by the inner cylinder and the heat insulation, the air flow inside the outer shell passes through the first cold air flow path, the hot air flow path, and the second cold air flow path respectively The respective air outlets blow out.

Preferably, the cold air flow in the first cold air flow path and/or the second cold air flow path is mixed into the hot air flow path near the air outlet of the hot air flow path.

Preferably, the airflow sucked by the fan unit respectively enters a hot airflow path and a second cold airflow path, the second cold airflow path includes a second inlet, the heating unit includes a heating wire, and the second inlet is located upstream of the heating wire.

Preferably, the fan unit is provided inside the casing, and the air inlet is provided at the rear end of the casing. The fan unit draws the airflow into the casing into the first cold airflow path, the second cold airflow path, and the hot airflow path, respectively. .

Preferably, the first cold air flow path includes a first inlet, and the first inlet is located upstream of the heating wire.

Preferably, the first inlet is located downstream of the second inlet.

Preferably, the fan unit is provided in the handle assembly, the air inlet is provided in the handle assembly, the heating unit is provided in the inner cylinder and the rear end of the inner cylinder is sealed, and the rear end of the outer casing is further provided with a first At the air inlet, the airflow enters the first cold air flow path from the first air inlet.

Preferably, the hair dryer further includes a first fan unit provided in the first cold air flow path for sucking air flow from the first air inlet into the first cold air flow path, the first fan unit is located upstream of the fan unit;

Alternatively, the airflow in the first cold airflow path is driven by the airflow blown from the hot airflow path and/or the second cold airflow path to drive the airflow outside the electric suction blower from the first air inlet.

Preferably, the hair dryer further includes electronic devices, and the electronic devices are disposed in the first cold air flow path and/or the second cold air flow path.

Preferably, the air outlet of the first cold air flow path is a first outlet, the outer shell includes a cylindrical outer wall and an inner wall connected to the cylindrical outer wall, the inner wall and the outer wall are connected by a rib, and the first outlet is formed by the inner wall and The outer wall is defined.

The beneficial effects of the invention are:

1. Through the setting of the first cold air flow path, hot air flow path, and second cold air flow path, the advantage is that through the setting of three air channels, the temperature at the air outlet is effectively reduced, so that when the hair dryer and other accessories are used together, For example, the air nozzle, diffuser, etc., make the temperature rise of the connection lower, users can remove and store it in time after use, which can prevent the attachment and the hair dryer from being deformed due to high temperature, making the connection more reliable; The airflow obtained from the air outlet has a lower temperature than in the prior art, which can ensure the moisture and gloss of the hair while drying the hair, preventing the hair from being frizzy and dry; by making the hot air path pass through the first cold air flow Between the path and the second cold air flow path, the cold air flow in the two cold air flow paths can take away the temperature rise due to the heat radiation of the heating unit, prevent the heating wire of the heating unit from turning red, and it is safer to use.

2. By mixing the cold air flow into the hot air flow, the advantage is to reduce the temperature of the hot air flow and prevent the hair from being dry and frizzy due to the overheating of the air flow. It is especially suitable for application scenarios when you want to blow dry your hair quickly when the room temperature is high in summer, but you don't want to blow it directly with cold air.

3. By positioning the second inlet upstream of the heating wire of the heating unit, the advantage is to ensure that the air flow entering the second cold air flow path is the cold air flow not heated by the heating wire; the air flow in the hot air flow path and the cold air flow path are the same The airflow allows the cold air passing through the second cold air flow path to have a larger air volume, which effectively reduces the air temperature and reduces the air volume loss.

4. By making the airflow entering the first cold airflow path, the second cold airflow path, and the hot airflow path all formed by the fan unit, the advantage is that the inner cylinder and the heat insulation parts can be realized and reduce the complexity of the product structure. cut costs.

5. By locating the first inlet of the first cold air flow path upstream of the heating wire, the advantage is to ensure that the air flow entering the first cold air flow path is a cold air flow.

6. By locating the first inlet downstream of the second inlet, the advantage is that it facilitates the fixing of the fan unit on the one hand and reduces the volume of the hair dryer; on the other hand, it reduces the air volume loss caused by the airflow when it is diverted into each airflow path.

7. By setting the fan unit in the handle assembly and the first air inlet, the first cold air flow path is independent of the air flow drawn into the hot air flow path and the second cold air flow path by the fan unit, increasing the air volume.

8. Through the setting of the first fan unit, the air volume and speed of the air flow in the first cold air flow path are increased, so that the heat of the surface of the inner cylinder is taken away in time to prevent the outer shell from being hot.

By making the air flow in the first cold air flow path passive, the cost is reduced and the internal structure of the hair dryer is simplified.

9. By disposing the electronic device in the first cold air flow path and/or the second cold air flow path, the advantage is that the cold air flow dissipates heat to the electronic device and prolongs the service life of the electronic device.

10. The first outlet is provided on the casing, which has the advantage of simplifying the structure.

BRIEF DESCRIPTION

The above and other features and advantages of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of the structure of an electric hair dryer in Embodiment 1 of the present invention.

2 is a cross-sectional view of the housing assembly in the first embodiment of the present invention.

FIG. 3 is a schematic structural diagram of the air outlets of the airflow paths in the first embodiment of the present invention.

FIG. 4 is a schematic structural diagram of the housing in the first embodiment of the present invention.

5 is a cross-sectional view of the hair dryer in the second embodiment of the present invention.

6 is another cross-sectional view of the hair dryer in the second embodiment of the present invention.

The names of the parts marked in the figure are as follows:

1. Housing assembly; 101, housing; 2, handle assembly; 3. fan unit; 301, motor; 302, fan blade; 303, fixed bracket; 4, heating unit; 401, heat insulation; 5, air inlet; 6 1, the first cold air flow path; 601, the first inlet; 602, the first outlet; 7, the second cold air flow path; 701, the second inlet; 702, the second outlet; 703, the third outlet; 8, hot air flow path 801, airflow inlet; 802, airflow outlet; 19, inner cylinder; 10, first air inlet; 11, inner wall; 12, ribs; 13, first fan unit.

detailed description

The content of the present invention will be described in detail below with reference to the drawings.

Example one:

As shown in FIGS. 1 to 4, a comfortable hair dryer includes a housing assembly 1 having a housing 101, and a handle assembly 2 connected to the housing 101;

The electric hair dryer further includes a fan unit 3 and a heating unit 4 provided in the housing 101. The fan unit 3 is used to draw airflow from the air inlet 5 of the electric hair dryer into the interior of the housing 101;

Wherein, the heating unit 4 includes a heat insulating member 401 having a hollow channel, an inner cylinder 19 is further provided in the outer casing 101, and the electric hair dryer includes a first cold air defined by the outer casing 101 and the inner cylinder 19 through a cold air flow Flow path 6, a second cold air flow path 7 defined by the heat insulation 401 through the cold air flow, and a hot air flow path 8 defined by the inner cylinder 19 and the heat insulation 401, the air flow inside the casing 101 passes through the first cold air flow path 6. The hot air flow path 8 and the second cold air flow path 7 are respectively blown out through their respective air outlets.

In this example, as shown in FIGS. 2 and 3, the first cold air flow path 6 includes a first inlet 601 and a first outlet 602, the second cold air flow path 7 includes a second inlet 701 and a second outlet 702, and the hot air flow path 8 The airflow inlet 801 and the airflow outlet 802 are included. The first outlet 602, the second outlet 702, and the airflow outlet 802 are airflow passage air outlets as described above. The inner cylinder 19 has a cylindrical shape or other shapes. From inside to outside are the second cold air flow path 7, the hot air flow path 8, and the first cold air flow path 6. Through the arrangement of the two cold air flow paths, the internal temperature of the heat insulation 401 and the temperature of the casing 101 caused by the heat radiation of the heating unit 4 can be taken away in time to prevent the heating unit 4 from redness and causing a safety accident; and, It can reduce the temperature of the airflow blown by the hair dryer and prevent dry hair and frizz.

The first cold air flow path 6 is disposed around the hot air flow path 8. The first cold air flow path 6 has a ring shape, and the hot air flow path 8 has a ring shape.

The air flow drawn by the fan unit 3 enters the hot air flow path 8 and the second cold air flow path 7 respectively, the second cold air flow path 7 includes a second inlet 701, the heating unit 4 includes a heating wire, and the second inlet 701 is located at Upstream of the wire, it is ensured that the air flow entering the second cold air flow path 7 is a useless and heated air flow. The temperature of the air flow when it is blown out from the second outlet 702 will be higher than that when it enters from the second inlet 701, because the heating wire is arranged around the heat insulation element 401, and the heating wire will cause As the temperature rises, the cold air flow passing through the heat insulation 401 will take away the heat in the hollow channel and the heat on the inner surface of the heat insulation 401, so the temperature of the air flow blown out from the second outlet 702 will increase. The situation when the cold air flow passes through the first cold air flow path 6 is the same as described above.

The fan unit 3 is provided inside the casing 101, and the air inlet 5 is provided at the rear end of the casing 101. The fan unit 3 draws the airflow into the casing 101 into the first cold airflow path 6 and the second cold airflow path 7 respectively , In the hot air flow path 8. The airflow entering the inside of the housing 101 passes through the first inlet 601, the second inlet 701, and the airflow inlet 801 into the first cold airflow path 6, the second cold airflow path 7, and the hot airflow path 8, in this example, the first inlet 601 is defined by the outer casing 101 and the inner cylinder 19; the airflow inlet 801 is defined by the inner cylinder 19 and the heat insulator 401; the fan unit 3 includes a motor 301 and a fan blade 302 driven and rotated by the motor 301, and a fixing bracket for fixing the motor 301 303, the second inlet 701 is defined by the fixing bracket 303 and the heat insulation 401. It can be understood that the first inlet 601 may be a hole provided in the inner cylinder 19, and the second inlet 701 may also be a hole provided in the heat insulating member 401.

The first cold air flow path 6 includes a first inlet 601 located upstream of the heating wire. The air flow entering the first cold air flow path 6 is a cold air flow, and a flowing heat insulation space is formed between the outer casing 101 and the inner cylinder 19 to prevent the outer casing 101 from becoming hot.

The first inlet 601 is located downstream of the second inlet 701, which has the advantage of facilitating the installation of the fan unit 3 under the premise of satisfying the power of the fan unit 3, making full use of the internal space of the housing 101, and miniaturizing the hair dryer. It can be understood that the first inlet 601 is flush with the second inlet 701 or the first inlet 601 is located upstream of the second inlet 701.

The hair dryer further includes electronic devices. According to the volume and number of electronic devices, according to the situation, the electronic devices may be provided in the first cold air flow path 6 or the second cold air flow path 7 or at the same time in the first cold air In the flow path 6 and the second cold air flow path 7. The cooling device radiates heat to the electronic device and prolongs the service life of the electronic device. The electronic device may be a thyristor, a negative ion generator, or a water ion generating component.

The air volume and wind speed of the hot air flow path 8 are larger than those of the first cold air flow path 6 and the second cold air flow path 7, which is beneficial to quickly dry hair and prevent hair frizz and dryness. Preferably, the air volume and wind speed of the second cold air flow path 7 are both greater than the air volume and wind speed of the first cold air flow path 6, which has the advantage of reducing the temperature difference between cold and heat felt by the scalp and improving the comfort of use.

The cold air flow in the first cold air flow path 6 and/or the second cold air flow path 7 merges into the hot air flow path 8 to reduce the temperature of the hot air flow path 8 and prevent the hair from being dry and frizzy caused by the air flow being too hot. In this example, the cold air flow in the second cold air flow path 7 merges into the hot air flow path 8, and the heat insulating member 401 includes a tapered section, which is disposed near the second outlet 702 and is located on the side wall of the tapered section A plurality of third outlets 703 are provided, and the cold air flow in the second cold air flow path 7 merges into the hot air flow path 8 from the third outlet 703 and is blown out from the air flow outlet 802.

It can be understood that the cold air flow of the first cold air flow path 6 merges into the hot air flow path 8. More specifically, the inner cylinder 19 is provided with a fourth outlet. The cold airflow in the first cold airflow path 6 merges into the hot airflow path 8 from the fourth outlet and blows out from the airflow outlet 802.

As shown in FIG. 4, the housing 101 includes a cylindrical outer wall and an inner wall 11 connected to the cylindrical outer wall. The inner wall 11 and the outer wall are connected by a rib 12. The first outlet 602 is defined by the inner wall 11 and the outer wall. Improve assembly efficiency.

Example two:

The difference between this embodiment and the first embodiment is that, as shown in FIGS. 5 and 6, the fan unit 3 is provided in the handle assembly 2, the air inlet 5 is provided in the handle assembly 2, and the heating unit 4 is provided in the inner cylinder Inside 19 and the rear end of the inner cylinder 19 is sealed, and the rear end of the outer casing 101 is also provided with a first air inlet 10 from which the airflow enters the first cold air flow path 6. The air flow in the hot air flow path 8 and the second cold air flow path 7 is the air flow drawn into the interior of the hair dryer through the fan unit 3, and the first cold air flow path 6 is the passive air flow or the air flow drawn into the casing 101 by other fan units 3 . By sealing the rear end of the inner cylinder 19, the advantage is to prevent the air volume and air pressure from leaking out, and to reduce the loss of air volume and air pressure from the second outlet 702 and the air outlet 802.

As an example, as shown in FIG. 5, the hair dryer further includes a first fan unit 13 provided in the first cold air flow path 6 for sucking air flow from the first air inlet 10 into the first cold air flow path 6 The first fan unit 13 is located upstream of the fan unit 3; through the arrangement of the first fan unit 13, the air volume and pressure of the first cold air flow path 6 are increased.

As another example, as shown in FIG. 6, the airflow in the first cold airflow path 6 is driven by the airflow blown out from the hot airflow path 8 and/or the second cold airflow path 7 to drive the airflow outside the electric suction blower from The first air inlet 10 enters it. At this time, the air flow in the first cold air flow path 6 is a passive air flow.

The above-mentioned embodiments are only optimized embodiments of the present invention, not all the embodiments of the present invention. According to the principles of the present invention, those skilled in the art can make various modifications, as long as they do not deviate from the spirit of the present invention, they should belong to the present invention. The scope defined by the claims.

Claims (10)

1. A comfortable hair dryer includes a shell component with a shell and a handle component connected with the shell;

   The electric hair dryer further includes a fan unit and a heating unit provided in the housing. The fan unit is used to draw airflow from the air inlet of the electric hair dryer into the interior of the housing;

   It is characterized in that the heating unit includes a heat insulation member with a hollow channel, and an inner cylinder is also provided in the outer casing. The electric hair dryer includes a first cold air flow path defined by the outer casing and the inner cylinder through the cold air flow, The second cold air flow path defined by the heat insulation through the cold air flow, and the hot air flow path defined by the inner cylinder and the heat insulation, the air flow inside the outer shell passes through the first cold air flow path, the hot air flow path, and the second cold air flow path They are blown out by their respective air outlets.
2. The electric hair dryer according to claim 1, wherein the cold air flow in the first cold air flow path and/or the second cold air flow path is mixed into the hot air flow path near the air outlet of the hot air flow path.
3. The electric hair dryer according to claim 1, wherein the airflow drawn by the fan unit respectively enters a hot airflow path and a second cold airflow path, the second cold airflow path includes a second inlet, and the heating unit includes a heating wire, The second inlet is located upstream of the heating wire.
4. The electric hair dryer according to claim 3, wherein the fan unit is provided inside the casing, and the air inlet is provided at the rear end of the casing, and the fan unit sucks the airflow entering the inside of the casing into the first cold air flow path respectively In the second cold air flow path and hot air flow path.
5. The electric hair dryer according to claim 4, wherein the first cold air flow path includes a first inlet, and the first inlet is located upstream of the heating wire.
6. The hair dryer according to claim 5, wherein the first inlet is located downstream of the second inlet.
7. The electric hair dryer according to claim 3, wherein the fan unit is provided in the handle assembly, the air inlet is provided in the handle assembly, the heating unit is provided in the inner cylinder and the rear end of the inner cylinder is sealed, The rear end of the casing is also provided with a first air inlet, and the airflow enters the first cold air flow path from the first air inlet.
8. The electric hair dryer according to claim 7, wherein the electric hair dryer further comprises a first fan unit provided in the first cold air flow path for sucking air flow from the first air inlet into the first cold air flow path , The first fan unit is located upstream of the fan unit;

   Alternatively, the airflow in the first cold airflow path is driven by the airflow blown from the hot airflow path and/or the second cold airflow path to drive the airflow outside the electric suction blower from the first air inlet.
9. The electric hair dryer according to any one of claims 1 to 8, wherein the electric hair dryer further includes an electronic device, and the electronic device is provided in the first cold air flow path and/or the second cold air flow path.
10. The electric hair dryer according to any one of claims 1 to 8, wherein the air outlet of the first cold air flow path is a first outlet, and the housing includes a cylindrical outer wall and an inner wall connected to the cylindrical outer wall, The inner wall and the outer wall are connected by a rib, and the first outlet is defined by the inner wall and the outer wall.

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