CN111418986A - Electric hair drier comfortable to use - Google Patents
Electric hair drier comfortable to use Download PDFInfo
- Publication number
- CN111418986A CN111418986A CN201910024169.3A CN201910024169A CN111418986A CN 111418986 A CN111418986 A CN 111418986A CN 201910024169 A CN201910024169 A CN 201910024169A CN 111418986 A CN111418986 A CN 111418986A
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- air flow
- cold air
- flow path
- inlet
- flow passage
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D20/00—Hair drying devices; Accessories therefor
- A45D20/04—Hot-air producers
- A45D20/08—Hot-air producers heated electrically
- A45D20/10—Hand-held drying devices, e.g. air douches
- A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
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- A—HUMAN NECESSITIES
- A45—HAND OR TRAVELLING ARTICLES
- A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
- A45D20/00—Hair drying devices; Accessories therefor
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- Cleaning And Drying Hair (AREA)
Abstract
The invention relates to the field of household appliances, in particular to a comfortable hair drier, which comprises a shell component with a shell and a handle component connected with the shell, wherein the shell component is provided with a handle; the electric hair drier also comprises a fan unit and a heating unit arranged in the shell, wherein the fan unit is used for sucking airflow from an air inlet of the electric hair drier to enter the shell; the electric hair drier comprises a first cold air flow passage which is limited by the outer shell and the inner cylinder and passes through cold air flow, a second cold air flow passage which is limited by the heat insulation piece and passes through cold air flow, and a hot air flow passage which is limited by the inner cylinder and the heat insulation piece, wherein the air flow in the outer shell is respectively blown out by respective air outlets after passing through the first cold air flow passage, the hot air flow passage and the second cold air flow passage. The water-based hair dryer can ensure the moisture degree and the glossiness of the hair while drying the hair.
Description
Technical Field
The invention relates to the field of household appliances, in particular to a hair drier comfortable to use.
Background
The existing electric hair drier generally comprises a fan unit and a heating unit which are arranged inside a shell, wherein the rear end of the shell is provided with an air inlet, the front end of the shell is provided with an air outlet, the fan unit is used for sucking air flow into the shell from the air inlet and blowing out the air flow from the air outlet, and the heating unit is used for heating the air flow.
In the prior art, in order to solve the problem of scalding hands on the surface of the shell, the middle of the air outlet is provided with uniform hot air, and the periphery of the air outlet is provided with a ring of cold air, so that hair shaping is facilitated, and the damage to hair quality is reduced.
In another prior art, the heating unit includes an insulating member, a liquid supply pipe is disposed in the insulating member, a part of the air flow generated by the fan unit passes through an inner side of the insulating member, and the inner side of the hot air is cool air.
In the practical use of the hair drier, the hair is easy to be frizzy and the scalp is dry, particularly short hair, after the hair is dried, the hair tips can be turned outwards, and the hair needs to be styled by a hair curling rod or a hair straightening rod to achieve an ideal effect. One solution to this problem is to add a negative ion module or a water ion module to the hair dryer, which increases the complexity of the control circuit and increases the cost. In addition, hot air current can lead to the air outlet temperature to rise when blowing out from the air outlet obvious, and general hairdryer and tuyere cooperation are used in order to realize improving or reducing wind speed, figurative purpose, and the hairdryer that current cold and hot wind path combines can not effectively make the temperature of tuyere and hairdryer junction effectively reduce, and after using up, the junction of tuyere and hairdryer scalds the hand, and inconvenient user accomodates.
Disclosure of Invention
In order to solve the above problems, the present invention provides a hair dryer which is comfortable to use.
The technical scheme of the invention is as follows:
a comfortable hair dryer comprises a shell assembly with a shell, a handle assembly connected with the shell;
the electric hair drier also comprises a fan unit and a heating unit arranged in the shell, wherein the fan unit is used for sucking airflow from an air inlet of the electric hair drier to enter the shell;
the electric hair drier comprises a first cold air flow passage which is limited by the outer shell and the inner cylinder and passes through cold air flow, a second cold air flow passage which is limited by the heat insulation piece and passes through cold air flow, and a hot air flow passage which is limited by the inner cylinder and the heat insulation piece, wherein the air flow in the outer shell is respectively blown out by respective air outlets after passing through the first cold air flow passage, the hot air flow passage and the second cold air flow passage.
Preferably, the cold air flow in the first cold air flow passage and/or the second cold air flow passage is mixed into the hot air flow passage at an air outlet close to the hot air flow passage.
Preferably, the fan unit draws air into a hot air flow path and a second cold air flow path, respectively, the second cold air flow path including a second inlet, the heating unit including a heater, the second inlet being located upstream of the heater.
Preferably, the fan unit is disposed inside the housing, the air inlet is disposed at a rear end of the housing, and the air flow sucked into the housing by the fan unit enters the first cold air flow passage, the second cold air flow passage and the hot air flow passage respectively.
Preferably, the first cold air flow path includes a first inlet located upstream of the heat generating wire.
Preferably, the first inlet is located downstream of the second inlet.
Preferably, the fan unit is arranged in the handle assembly, the air inlet is arranged on the handle assembly, the heating unit is arranged in the inner barrel and at the rear end of the inner barrel, the rear end of the shell is further provided with a first air inlet, and air flow enters the first cold air circulation passage from the first air inlet.
Preferably, the electric hair drier further comprises a first fan unit arranged in the first cold air flow path and used for sucking the air flow from the first air inlet into the first cold air flow path, and the first fan unit is positioned at the upstream of the fan unit;
or the airflow in the first cold air flow path is driven by the airflow blown out from the hot airflow path and/or the second cold air flow path to enter the air flow outside the curling and sucking hair drier from the first air inlet.
Preferably, the electric hair dryer further comprises an electronic device, and the electronic device is arranged in the first cold air flow channel and/or the second cold air flow channel.
Preferably, the air outlet of the first cold air flow passage is a first outlet, the housing includes a cylindrical outer wall and an inner wall connected with the cylindrical outer wall, the inner wall and the outer wall are connected through ribs, and the first outlet is defined by the inner wall and the outer wall.
The invention has the beneficial effects that:
1. through the arrangement of the first cold air flow passage, the hot air flow passage and the second cold air flow passage, the temperature at the air outlet is effectively reduced through the arrangement of the three air passages, so that when the electric hair drier is matched with other accessories for use, such as an air nozzle, a diffuser and the like, the temperature rise at the joint is lower, a user can timely take down and store the electric hair drier after using the electric hair drier, and the connection between the accessories and the electric hair drier can be prevented from being deformed due to high temperature, so that the connection is more reliable; moreover, the air flow obtained from the air outlet has lower temperature than that in the prior art, the moisture and the glossiness of the hair can be ensured while the hair is dried, and the hair is prevented from frizzy and dry; the hot air flow passage is arranged between the first cold air flow passage and the second cold air flow passage, so that the temperature rise generated by the heat radiation of the heating unit can be taken away by the cold air flow in the two cold air flow passages, the heating wire of the heating unit is prevented from turning red, and the use is safer.
2. By mixing the cold air stream into the hot air stream, the benefit is to reduce the temperature of the hot air stream and prevent hair drying and frizziness caused by overheating of the air stream. The air-conditioning and hair-drying device is particularly suitable for application scenes when the room temperature is high in summer and the hair is to be dried quickly, but the hair is not to be directly blown by cold air flow.
3. By locating the second inlet upstream of the heater element, it is beneficial to ensure that the airflow entering the second cold air flow path is a cold airflow that is not heated by the heater element; the air flows in the hot air flow passage and the cold air flow passage are the same air flow, so that cold air with larger air volume passes through the second cold air flow passage, the air temperature is effectively reduced, and the air volume loss is reduced.
4. The air flow entering the first cold air flow passage, the second cold air flow passage and the hot air flow passage is formed by the fan unit, and the fan unit has the advantages of being capable of achieving the purposes of arranging the inner cylinder and the heat insulation piece, reducing the complexity of the product structure and reducing the cost.
5. By locating the first inlet of the first cold air flow passage upstream of the heater, it is beneficial to ensure that the airflow entering the first cold air flow passage is cold.
6. By locating the first inlet downstream of the second inlet, the benefits are, on the one hand, ease of fixing the fan unit, reducing the volume of the hairdryer; on the other hand, the air volume loss caused when the air flow is divided and enters each air flow passage is reduced.
7. The fan unit is arranged in the handle assembly and the first air inlet is arranged, so that the first cold air flow passage and the air flow sucked into the hot air flow passage and the second cold air flow passage by the fan unit are independent, and the air quantity is increased.
8. Through the setting of first fan unit, increase the amount of wind and the wind speed of air current in the first cold air current route to in time take away the heat on the surface of inner tube, prevent that the shell from sending out the boiling hot.
The cost is reduced and the internal structure of the electric hair drier is simplified by making the airflow in the first cold air flow passage be passive airflow.
9. By arranging the electronic device in the first cold air flow path and/or the second cold air flow path, the heat of the electronic device is dissipated by the cold air flow, and the service life of the electronic device is prolonged.
10. By providing the first outlet on the housing, the advantage is that the construction is simplified.
Drawings
Fig. 1 is a schematic view of the whole structure of the hair dryer according to the first embodiment of the invention.
Fig. 2 is a cross-sectional view of a housing assembly according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of the air outlets of the airflow paths according to the first embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a housing according to a first embodiment of the invention.
Fig. 5 is a sectional view of a hair dryer according to a second embodiment of the present invention.
Fig. 6 is another sectional view of the hair dryer according to the second embodiment of the present invention.
The names of the components marked in the figures are as follows:
1. a housing assembly; 101. a housing; 2. a handle assembly; 3. A fan unit; 301. a motor; 302. a fan blade; 303. fixing a bracket; 4. a heating unit; 401. a thermal insulation member; 5. an air inlet; 6. a first cold air flow path; 601. a first inlet; 602. a first outlet; 7. a second cold air flow path; 701. a second inlet; 702. a second outlet; 703. a third outlet; 8. a hot gas flow path; 801. an airflow inlet; 802. an airflow outlet; 19. an inner barrel; 10. a first air inlet; 11. an inner wall; 12. ribs; 13. a first fan unit.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The first embodiment is as follows:
as shown in fig. 1 to 4, a hair dryer comfortable to use comprises a housing assembly 1 having a housing 101, a handle assembly 2 connected to the housing 101;
the electric hair drier also comprises a fan unit 3 and a heating unit 4 arranged in the shell 101, wherein the fan unit 3 is used for sucking air flow from an air inlet 5 of the electric hair drier into the shell 101;
the electric hair dryer comprises a first cold air flow path 6 defined by the casing 101 and the inner cylinder 19 and passing through a cold air flow, a second cold air flow path 7 defined by the heat insulation piece 401 and passing through the cold air flow, and a hot air flow path 8 defined by the inner cylinder 19 and the heat insulation piece 401, wherein 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 and is blown out by respective air outlets.
In this example, as shown in fig. 2 and 3, first cold air flow path 6 includes first inlet 601 and first outlet 602, second cold air flow path 7 includes second inlet 701 and second outlet 702, and hot air flow path 8 includes air flow inlet 801 and air flow outlet 802. The first outlet 602, the second outlet 702, and the airflow outlet 802 are airflow path outlets as described above. The inner cylinder 19 is cylindrical or has another shape. The second cold air flow passage 7, the hot air flow passage 8 and the first cold air flow passage 6 are arranged from inside to outside in sequence. Through the arrangement of the two cold air flow passages, the temperature rise inside the heat insulation part 401 and the temperature rise inside the shell 101 caused by the heat radiation effect of the heating unit 4 can be timely taken away, and the safety accident caused by the red color of the heating unit 4 is prevented; moreover, the temperature of the air flow blown out by the electric hair drier can be reduced, and the hair is prevented from being dry and frizzy.
The first cold gas flow path 6 is arranged around the hot gas flow path 8. The first cold gas flow path 6 is annular and the hot gas flow path 8 is also annular.
The airflow sucked by the fan unit 3 enters the hot airflow path 8 and the second cold airflow path 7 respectively, the second cold airflow path 7 includes a second inlet 701, the heating unit 4 includes a heating wire, and the second inlet 701 is located upstream of the heating wire to ensure that the airflow entering the second cold airflow path 7 is airflow without being heated. The temperature of the airflow blown out from the second outlet 702 is higher than the temperature of the airflow blown out from the second inlet 701, because the heating wire is arranged around the heat insulation member 401, the heating wire can cause the temperature in the hollow channel of the heat insulation member 401 to increase during the operation process, and the cold airflow can take away the heat in the hollow channel and the heat on the inner surface of the heat insulation member 401 after passing through the heat insulation member 401, so the temperature of the airflow blown out from the second outlet 702 can increase. The case of the cold air flow passing through the first cold air flow passage 6 is the same as described above.
The fan unit 3 is disposed inside the casing 101, the air inlet 5 is disposed at the rear end of the casing 101, and the air flow sucked into the casing 101 by the fan unit 3 enters the first cold air flow passage 6, the second cold air flow passage 7 and the hot air flow passage 8, respectively. The airflow entering the inside of the casing 101 enters the first cold air flow passage 6, the second cold air flow passage 7 and the hot air flow passage 8 through the first inlet 601, the second inlet 701 and the airflow inlet 801, respectively, and in this example, the first inlet 601 is defined by the casing 101 and the inner cylinder 19; the airflow inlet 801 is defined by the inner barrel 19 and the insulation 401; the fan unit 3 includes a motor 301 and fan blades 302 driven to rotate by the motor 301, and a fixing bracket 303 for fixing the motor 301, and the second inlet 701 is defined by the fixing bracket 303 and the heat insulator 401. It is understood that the first inlet 601 can be a hole formed in the inner barrel 19 and the second inlet 701 can also be a hole formed in the thermal shield 401.
The first cold air flow path 6 includes a first inlet 601, and the first inlet 601 is located upstream of the heating wire. The airflow entering the first cold air flow passage 6 is changed to a cold airflow, and a thermal isolation space is formed between the casing 101 and the inner cylinder 19 to prevent the casing 101 from being scalded.
The first inlet 601 is located at the downstream of the second inlet 701, which is beneficial to facilitating the installation of the fan unit 3 on the premise of meeting the power of the fan unit 3, making full use of the internal space of the casing 101, and miniaturizing the hair dryer. It will be appreciated that the first inlet 601 is flush with the second inlet 701 or that the first inlet 601 is upstream of the second inlet 701.
The hair dryer further comprises an electronic device, and the electronic device can be arranged in the first cold air flow passage 6, the second cold air flow passage 7 or both the first cold air flow passage 6 and the second cold air flow passage 7 according to the volume and the number of the electronic device and the situation. The cold air flow is used for radiating heat for the electronic device, and the service life of the electronic device is prolonged. The electronic device can be a silicon controlled rectifier, can be an anion generator, can be a water ion generating assembly and the like.
The air quantity and the air speed of the hot air flow passage 8 are both larger than those of the first cold air flow passage 6 and the second cold air flow passage 7, and the advantages of being beneficial to quickly drying hair and preventing the hair from frizzy and dry. The air quantity and the air speed of the second cold air flow passage 7 are preferably larger than those of the first cold air flow passage 6, which is beneficial to reducing the cold and hot temperature difference felt by the scalp and improving the use comfort.
The cold air flow in the first cold air flow passage 6 and/or the second cold air flow passage 7 is merged into the hot air flow passage 8, which plays a role of reducing the temperature of the hot air flow passage 8 and prevents hair from being dried up and frizzy due to too hot air flow. In this example, the cold air flow in the second cold air flow path 7 merges into the hot air flow path 8, the thermal insulation member 401 includes a conical section, the conical section is disposed near the second outlet 702, a plurality of third outlets 703 are disposed on the sidewall of the conical section, and the cold air flow in the second cold air flow path 7 merges into the hot air flow path 8 from the third outlets 703 and is blown out from the air flow outlet 802.
It will be appreciated that the cold gas flow of the first cold gas flow path 6 merges into the hot gas flow path 8. More specifically, the inner drum 19 is provided with a fourth outlet, and the cold air flow in the first cold air flow passage 6 is collected into the hot air flow passage 8 from the fourth outlet and blown out from the air flow outlet 802.
As shown in fig. 4, the housing 101 includes a cylindrical outer wall, an inner wall 11 connected to the cylindrical outer wall, the inner wall 11 and the outer wall are connected by ribs 12, and the first outlet 602 is defined by the inner wall 11 and the outer wall. The assembly efficiency is improved.
Example two:
the difference between this embodiment and the first embodiment is that, as shown in fig. 5 and 6, the fan unit 3 is disposed in the handle assembly 2, the air inlet 5 is disposed on the handle assembly 2, the heating unit 4 is disposed in the inner cylinder 19, the rear end of the inner cylinder 19 is hermetically disposed, the rear end of the housing 101 is further provided with a first air inlet 10, and the air flow enters the first cold air flow passage 6 from the first air inlet 10. 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 hair dryer by the fan unit 3, and the first cold air flow path 6 is the passive air flow or other air flow drawn into the interior of the housing 101 by the fan unit 3. By sealing the rear end of the inner cylinder 19, it is beneficial to prevent the air volume and the air pressure from leaking, and reduce the loss of the air volume and the air pressure of the air flow blown out from the second outlet 702 and the air flow outlet 802.
An example, as shown in fig. 5, the hair dryer further includes a first fan unit 13 disposed in the first cold air flow path 6 for drawing an air flow from the first air inlet 10 into the first cold air flow path 6, the first fan unit 13 being located upstream of the fan unit 3; the air volume and the air pressure of the first cool air flow passage 6 are increased by the arrangement of the first fan unit 13.
For another example, as shown in fig. 6, the airflow in the first cold air flow path 6 is driven by the airflow blown out from the hot airflow path 8 and/or the second cold air flow path 7 to enter the air flow outside the hair dryer through the first air inlet 10. At this time, the airflow in the first cooled airflow path is a passive airflow.
The above-described embodiments are merely preferred embodiments of the present invention, not all embodiments of the present invention, and various modifications may be made by those skilled in the art according to the principle of the present invention without departing from the spirit of the present invention, which is defined by the scope of the appended claims.
Claims (10)
1. A comfortable hair dryer comprises a shell assembly with a shell, a handle assembly connected with the shell;
the electric hair drier also comprises a fan unit and a heating unit arranged in the shell, wherein the fan unit is used for sucking airflow from an air inlet of the electric hair drier to enter the shell;
the electric hair drier is characterized in that the heating unit comprises a heat insulation piece with a hollow channel, an inner cylinder is further arranged in the shell, the electric hair drier comprises a first cold air flow passage which is limited by the shell and the inner cylinder and passes through cold air flow, a second cold air flow passage which is limited by the heat insulation piece and passes through cold air flow, and a hot air flow passage which is limited by the inner cylinder and the heat insulation piece, and air flow in the shell passes through the first cold air flow passage, the hot air flow passage and the second cold air flow passage and then is respectively blown out by respective air outlets.
2. The hair dryer of 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 at an air outlet adjacent to the hot air flow path.
3. The hair dryer of claim 1 wherein the air flow drawn by said fan unit enters a hot air flow path and a second cold air flow path, respectively, the second cold air flow path including a second inlet, the heating unit including a heater, the second inlet being located upstream of the heater.
4. An electric hair dryer according to claim 3 wherein the fan unit is disposed within the housing, the air inlet is disposed at the rear end of the housing, and the air flow drawn into the housing by the fan unit is respectively directed into the first cold air flow path, the second cold air flow path, and the hot air flow path.
5. The hair dryer of claim 4 wherein said first cool air flow path includes a first inlet, said first inlet being located upstream of the heater.
6. A hair dryer according to claim 4 in which the first inlet is located downstream of the second inlet.
7. The hair dryer of claim 3, wherein the fan unit is disposed in the handle assembly, the air inlet is disposed on the handle assembly, the heating unit is disposed in the inner cylinder, the rear end of the inner cylinder is hermetically disposed, the rear end of the housing is further provided with a first air inlet, and the air flow enters the first cool air flow passage from the first air inlet.
8. An electric hair dryer according to claim 7, further comprising a first fan unit disposed in the first cool air flow path for drawing the air flow from the first air intake into the first cool air flow path, the first fan unit being located upstream of the fan unit;
or the airflow in the first cold air flow path is driven by the airflow blown out from the hot airflow path and/or the second cold air flow path to enter the air flow outside the curling and sucking hair drier from the first air inlet.
9. An electric hair dryer according to any of claims 1 to 8, characterized in that it further comprises electronics, which are provided in the first and/or second cold air flow path.
10. The hair dryer of any one of claims 1 to 8, wherein the air outlet of the first cool air flow passage is a first outlet, the housing comprises a cylindrical outer wall, an inner wall connected with the cylindrical outer wall, the inner wall and the outer wall are connected through ribs, and the first outlet is defined by the inner wall and the outer wall.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910024169.3A CN111418986A (en) | 2019-01-10 | 2019-01-10 | Electric hair drier comfortable to use |
| PCT/CN2019/130619 WO2020143508A1 (en) | 2019-01-10 | 2019-12-31 | Electric hair dryer that is comfortable to use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910024169.3A CN111418986A (en) | 2019-01-10 | 2019-01-10 | Electric hair drier comfortable to use |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111418986A true CN111418986A (en) | 2020-07-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910024169.3A Pending CN111418986A (en) | 2019-01-10 | 2019-01-10 | Electric hair drier comfortable to use |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN111418986A (en) |
| WO (1) | WO2020143508A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112869327A (en) * | 2020-12-26 | 2021-06-01 | 上海派爱德科技有限公司 | Air duct system of hair drier |
| CN114209141A (en) * | 2021-01-21 | 2022-03-22 | 杭州乐秀电子科技有限公司 | Low-loss hurricane wind barrel |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112155302A (en) * | 2020-09-29 | 2021-01-01 | 上海飞科电器股份有限公司 | Hair drier |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5241974A (en) * | 1992-11-25 | 1993-09-07 | Ta-Wei Chen | Hair appliance for directing warm air to hair |
| JP4131169B2 (en) * | 2002-12-27 | 2008-08-13 | 松下電工株式会社 | Hair dryer |
| CN101779856A (en) * | 2010-02-09 | 2010-07-21 | 黄伟雄 | Electric hair dryer |
| CN108835833B (en) * | 2018-08-01 | 2021-01-26 | 杭州乐秀电子科技有限公司 | Hair drier |
| CN209750153U (en) * | 2019-01-10 | 2019-12-10 | 杭州乐秀电子科技有限公司 | Electric hair drier comfortable to use |
-
2019
- 2019-01-10 CN CN201910024169.3A patent/CN111418986A/en active Pending
- 2019-12-31 WO PCT/CN2019/130619 patent/WO2020143508A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112869327A (en) * | 2020-12-26 | 2021-06-01 | 上海派爱德科技有限公司 | Air duct system of hair drier |
| CN114209141A (en) * | 2021-01-21 | 2022-03-22 | 杭州乐秀电子科技有限公司 | Low-loss hurricane wind barrel |
| CN114209141B (en) * | 2021-01-21 | 2023-09-22 | 杭州乐秀电子科技有限公司 | Low-loss hurricane duct |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020143508A1 (en) | 2020-07-16 |
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