A hot and cold air mixed blowing hair dryer

Abstract

The present invention provides a hot and cold air mixed hair dryer, which arranges a heating mechanism and a motor assembly inside a handle, and divides the air duct of the hair dryer into a main air duct and an auxiliary air duct. A low-temperature fluid flows through the auxiliary air duct, and a high-temperature fluid flows through the main air duct. The low-temperature fluid flowing through the auxiliary air duct can timely cool down various components in the hair dryer, such as structural components of the main air duct, and the high-temperature fluid and the low-temperature fluid are finally mixed at the front end of the air outlet of the hair dryer, so that the air outlet is gentle, thereby improving the user experience.

Description

Technical Field

[0001] The invention relates to the field of handheld appliances, and in particular to a hot and cold air mixed blowing hair dryer. Background Art

[0002] Hair dryers, especially some household hair dryers, are mainly used for drying and shaping hair. The fan directly relies on the motor to drive the rotor to drive the fan blades to rotate. When the fan blades rotate, air is sucked in from the air inlet, and the centrifugal airflow formed is blown out from the front nozzle of the body. When the air passes through, if the heating wire is powered on and heated, hot air is blown out; if the switch is selected to prevent the heating wire from being powered on and heated, cold air is blown out. This is how hair dryers achieve the purpose of drying.

[0003] Most traditional hair dryers on the market only have one air duct inside the hair dryer to flow high-temperature fluid. The hair dryer has no heat dissipation function. When in use, the shell is hot and the temperature of the fluid blown out is high, which causes great damage to the hair. At the same time, the heating unit of the hair dryers on the market is mostly set in the hair dryer body, such as a double-duct hair dryer disclosed in the utility model patent with announcement number CN205624987U, which includes a hair dryer body, a hair dryer body including a handle and a hair dryer, and the hair dryer body is provided with a natural wind duct and a booster duct for conveying hot air independently arranged in the same direction, and an annular cavity is formed between the booster duct and the natural wind duct, and a heating device is arranged circumferentially in the annular cavity. This type of design will lead to the following problems. First, the hair dryer has a high center of gravity, which makes the hair dryer body heavy and inconvenient for people to hold; second, there are high-temperature and high-pressure components on the hair dryer body. When it is touched by metal substances or in a humid environment, the hair dryer is easy to get water in, resulting in a short circuit or even explosion. Summary of the invention

[0004] In view of the defects in the prior art, an object of the present invention is to provide a hot and cold air mixed blower.

[0005] The hot and cold air mixed blowing hair dryer provided by the present invention comprises a handle and a body both provided with air ducts;

[0006] The handle air duct includes a handle main air duct and a handle auxiliary air duct which are not connected to each other, and the body air duct includes a body main air duct and a body auxiliary air duct which are not connected to each other; the handle main air duct and the body main air duct are connected and can flow through a high-temperature fluid; the handle auxiliary air duct and the body auxiliary air duct are connected and can flow through a low-temperature fluid;

[0007] The body comprises an outer cylinder and a booster chamber arranged in the outer cylinder, the interior of the booster chamber forms a main air duct of the body, and the outer wall of the booster chamber and the inner wall of the outer cylinder form a secondary air duct of the body;

[0008] A heating mechanism is installed in the handle, the interior of the heating mechanism forms a main air duct of the handle, and the gap between the outside of the heating mechanism and the inner wall of the handle forms a secondary air duct of the handle;

[0009] The heating mechanism includes a heating wire bracket and a heating wire installed in the heating wire bracket. A notch is provided on the side of the heating wire bracket facing the boosting chamber, and a boss is provided at the corresponding position of the boosting chamber. The notch of the heating wire bracket matches and connects with the boss of the boosting chamber to form a connecting port between the main air duct of the handle and the main air duct of the body.

[0010] Preferably, the heating wire bracket is connected to the pressurization chamber via a sealing element.

[0011] Preferably, the sealing element is a rubber sealing ring.

[0012] Preferably, the heating wire bracket is eccentrically installed in the handle.

[0013] Preferably, a plurality of first ribs are arranged on the outer wall of the heating wire bracket, and the plurality of first ribs are arranged on the other side of the heating wire bracket where the notch is located.

[0014] Preferably, a plurality of first ribs and a plurality of second ribs are arranged on the outer wall of the heating wire bracket, the first ribs and the second ribs are arranged on opposite sides, the thickness of the first ribs is greater than the thickness of the second ribs, and the first ribs are arranged on the other side of the heating wire bracket where the notch is located.

[0015] Preferably, the body is also provided with a negative pressure air duct running through the front and rear ends of the body.

[0016] Preferably, the boosting chamber has a hollow portion and a channel body surrounding the hollow portion, the hollow portion of the boosting chamber is a part of the negative pressure air duct, the channel body of the boosting chamber forms a main air duct of the body, and an auxiliary air duct of the body is formed between the outer wall of the channel body of the boosting chamber and the inner wall of the outer cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The hot and cold air mixed hair dryer provided by the present invention arranges the heating mechanism on the handle rather than the body, which can reduce the size of the hair dryer.

[0019] 2. The hot and cold air mixed hair dryer of the present invention is provided with a main air duct and an auxiliary air duct. The low-temperature fluid flowing through the auxiliary air duct can timely cool down various components in the hair dryer, such as the structural components constituting the main air duct of the handle and the main air duct of the body, the hair dryer casing, the hair dryer control components, etc., thereby extending the service life of the hair dryer.

[0020] 3. In the hot and cold air mixed blowing hair dryer provided by the present invention, the high-temperature fluid and the low-temperature fluid are finally mixed at the front end of the air outlet of the hair dryer, and the air outlet is gentle, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0022] Figure 1 It is a schematic diagram of the overall structure of the hot and cold air mixed blowing hair dryer of the present invention;

[0023] Figure 2 An exploded view of the hot and cold air mixed blowing hair dryer of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the heating wire bracket;

[0025] Figure 4 This is a schematic diagram of the structure of the booster compartment.

[0026] The figure shows:

[0027] 1-Handle;

[0028] 2-body;

[0029] 3-Outer cylinder;

[0030] 4- Booster chamber;

[0031] 5- Heating mechanism;

[0032] 6-Motor assembly;

[0033] 7- Sealing element;

[0034] 41-Reinforced guide ribs;

[0035] 42- guide ribs;

[0036] 43- hollow part of the booster chamber;

[0037] 44-boosting chamber channel body;

[0038] 51-heating wire bracket;

[0039] A-body main air duct outlet;

[0040] B-body auxiliary air duct outlet

[0041] C-negative pressure air duct outlet;

[0042] D-heating wire bracket gap;

[0043] E-boost chamber boss DETAILED DESCRIPTION

[0044] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, several changes and improvements can also be made without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0045] In the description of the present application, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] First embodiment:

[0047] like Figures 1 to 4 As shown, a hot and cold air mixed hair dryer comprises a handle 1 and a body 2, wherein the handle 1 is provided with a handle air duct extending along its length direction, and the body 2 is provided with a body air duct extending along its length direction, and the handle air duct and the body air duct are connected; an air inlet connected to the handle air duct is provided at the bottom end of the handle 1, and an air outlet connected to the body air duct is provided at the front end of the body 2; the handle air duct comprises a handle main air duct and a handle auxiliary air duct which are not connected to each other, and the body air duct comprises a body main air duct and a body auxiliary air duct which are not connected to each other, the handle main air duct and the body main air duct are connected and can flow through a high-temperature fluid; the handle auxiliary air duct and the body auxiliary air duct are connected and can flow through a low-temperature fluid; the body 2 comprises an outer cylinder 3 and a pressurization chamber 4 arranged in the outer cylinder 3, the interior of the pressurization chamber 4 forms the body main air duct, and the body auxiliary air duct is formed between the outer wall of the pressurization chamber 4 and the inner wall of the outer cylinder 3.

[0048] A heating mechanism 5 and a motor assembly 6 are installed in the handle 1. The motor assembly 6 is arranged below the heating mechanism 5. The heating mechanism 5 includes a heating wire and a heating wire bracket 51. The heating wire is installed in the heating wire bracket 51. The heating wire bracket 51 is eccentrically installed in the handle 1. A notch D is provided on the side of the heating wire bracket 51 facing the booster chamber 4. A boss E is provided at the corresponding position of the booster chamber 4. The notch D of the heating wire bracket matches and connects with the boss E of the booster chamber to form a connection port between the main air duct of the handle and the main air duct of the body. The heating wire bracket 51 is connected to the booster chamber 4 through a sealing element 7, and the sealing element 7 is a rubber sealing ring.

[0049] The heating wire bracket 51 can be installed eccentrically in one of the following two ways: one is that only a plurality of first ribs are provided on the outer wall of the heating wire bracket 51, and the plurality of first ribs are provided on the same side of the outer wall of the heating wire bracket 51; the upper edge of the heating wire bracket 51 is provided with a notch D, and the first ribs are provided on the other side of the heating wire bracket with the notch D. As a result, after the heating wire bracket 51 is installed on the handle 1, a larger gap will be formed between the side of the heating wire bracket 51 with the first ribs and the inner wall of the handle 1, and the air entering from the bottom end of the handle can enter the gap to form a handle cold air duct, while the side of the heating wire bracket 51 without the first ribs is closer to the inner wall of the handle 1, thereby forming an eccentric installation. Secondly, two kinds of ribs are arranged on the outer wall of the heating wire bracket 51, namely, a plurality of first ribs and a plurality of second ribs, the first ribs and the second ribs are arranged on opposite sides, the thickness of the first ribs is greater than the thickness of the second ribs, a notch D is arranged on the upper edge of the heating wire bracket 51, and the second ribs are arranged on one side of the notch D of the heating wire bracket. After the heating wire bracket 51 is installed into the handle, since the thickness of the first rib is greater than the thickness of the second rib, the side of the heating wire bracket 51 where the first rib is arranged will form a larger gap with the inner wall of the handle 1, and the air entering from the bottom end of the handle can enter the handle cold air duct formed by the gap, while the side of the heating wire bracket 51 with the second rib is closer to the inner wall of the handle 1, thereby forming an eccentric installation.

[0050] When in use, the air around the bottom and side wall of the handle 1 enters the handle 1 through the air inlet and is divided into two paths. One path passes through the heating wire bracket 51 set in the handle 1 and is heated by the heating wire to become a high-temperature fluid; the other path passes through the gap between the handle 1 and the heating wire bracket 51. This part of the air is not heated. Because the temperature is lower than that of the high-temperature fluid, it is called a low-temperature fluid. The high-temperature fluid goes up from the main air duct of the handle to the main air duct of the body, and the low-temperature fluid goes up from the auxiliary air duct of the handle to the auxiliary air duct of the body. The low-temperature fluid can timely cool down the various components in the hair dryer, such as the structural components constituting the main air duct of the handle and the main air duct of the body, the hair dryer shell, the hair dryer control components, etc., to avoid damage to the components inside the hair dryer due to high temperature, thereby extending the service life of the hair dryer. The high-temperature fluid blown out of the air outlet A of the main air duct of the body and the low-temperature fluid flowing out of the air outlet B of the auxiliary air duct of the body are mixed and superimposed at the air outlet position. The hair dryer has a large air output, suitable air temperature, and good user experience.

[0051] Second embodiment:

[0052] like Figures 1 to 4As shown, a hot and cold air mixed hair dryer comprises a handle 1 and a body 2, wherein the handle 1 is provided with a handle air duct extending along its length direction, and the body 2 is provided with a body air duct extending along its length direction, and the handle air duct and the body air duct are connected; the bottom end of the handle 1 is provided with an air inlet connected to the handle air duct, and the front end of the body 2 is provided with an air outlet connected to the body air duct; the handle air duct comprises a handle main air duct and a handle auxiliary air duct which are not connected to each other, the body air duct comprises a body main air duct and a body auxiliary air duct which are not connected to each other, and the body 2 is further provided with a negative pressure air duct which runs through the front and rear ends of the body.

[0053] The handle main air duct is connected to the body main air duct and can flow high-temperature fluid; the handle auxiliary air duct is connected to the body auxiliary air duct and can flow low-temperature fluid; the body 2 includes an outer tube 3 and a booster chamber 4 arranged in the outer tube 3, the booster chamber 4 has a hollow portion 43 and a channel body 44 surrounding the hollow portion 43, the hollow portion 43 of the booster chamber is a part of the negative pressure air duct, the channel body 44 of the booster chamber forms the body main air duct, and the body auxiliary air duct is formed between the outer wall of the booster chamber channel body 44 and the inner wall of the outer tube 3. The body auxiliary air duct is arranged around the body main air duct, and the body main air duct is arranged around the negative pressure air duct; the body auxiliary air duct, the body main air duct, and the negative pressure air duct are arranged in concentric circles and are not connected to each other.

[0054] A heating mechanism 5 and a motor assembly 6 are installed in the handle 1. The motor assembly 6 is arranged below the heating mechanism 5. The heating mechanism 5 includes a heating wire and a heating wire bracket 51. The heating wire is installed in the heating wire bracket 51. The heating wire bracket 51 is eccentrically installed in the handle 1. A notch D is provided on the side of the heating wire bracket 51 facing the boosting chamber 4. A boss E is provided at a corresponding position of the boosting chamber channel body 44. The heating wire bracket notch D is matched with the boosting chamber boss E to form a connection port between the main air duct of the handle and the main air duct of the body. The heating wire bracket 51 is connected to the boosting chamber channel body 44 through a sealing element 7. The sealing element 7 is a rubber sealing ring.

[0055] The heating wire bracket can be installed eccentrically in one of the following two ways: one is that only a plurality of first ribs are provided on the outer wall of the heating wire bracket 51, and the plurality of first ribs are provided on the same side of the outer wall of the heating wire bracket 51; the upper edge of the heating wire bracket 51 is provided with a notch D, and the first ribs are provided on the other side of the heating wire bracket with the notch D. As a result, after the heating wire bracket 51 is installed on the handle 1, a larger gap will be formed between the side of the heating wire bracket 51 with the first ribs and the inner wall of the handle 1, and the air entering from the bottom end of the handle can enter the gap to form a handle cold air duct, while the side of the heating wire bracket 51 without the first ribs is closer to the inner wall of the handle 1, thereby forming an eccentric installation. Secondly, two kinds of ribs are arranged on the outer wall of the heating wire bracket 51, namely, a plurality of first ribs and a plurality of second ribs, the first ribs and the second ribs are arranged on opposite sides, the thickness of the first ribs is greater than the thickness of the second ribs, a notch D is arranged on the upper edge of the heating wire bracket 51, and the second ribs are arranged on one side of the notch D of the heating wire bracket. After the heating wire bracket 51 is installed into the handle, since the thickness of the first rib is greater than the thickness of the second rib, the side of the heating wire bracket 51 where the first rib is arranged will form a larger gap with the inner wall of the handle 1, and the air entering from the bottom end of the handle can enter the handle cold air duct formed by the gap, while the side of the heating wire bracket 51 with the second rib is closer to the inner wall of the handle 1, thereby forming an eccentric installation.

[0056] When in use, the outside air enters from the air inlet at the bottom of the handle 1 and is divided into two paths. One path passes through the heating wire bracket 51 set in the handle 1 and is heated by the heating wire to become a high-temperature fluid; the other path passes through the gap between the handle 1 and the heating wire bracket 51. This part of the air is not heated. Because the temperature is lower than that of the high-temperature fluid, it is called a low-temperature fluid. The high-temperature fluid enters the main air duct of the body from the main air duct of the handle and finally blows out from the air outlet A of the main air duct of the body. Since the body is also provided with a negative pressure air duct, when the high-temperature fluid flows out from the air outlet A of the main air duct, a negative pressure will be formed at the position of the air outlet C of the negative pressure air duct, driving the air at the rear end of the body 2 to flow out from the negative pressure air duct all the way, and finally flows out from the air outlet C of the negative pressure air duct. The low-temperature fluid enters the body auxiliary air duct from the auxiliary air duct of the handle all the way upward. The low-temperature fluid can timely cool down various components in the hair dryer, such as the structural components constituting the main air duct of the handle and the main air duct of the body, the hair dryer shell, the hair dryer control components, etc., to extend the service life of the hair dryer. The high-temperature fluid blown out from the main air duct outlet A on the body, the low-temperature fluid flowing out from the auxiliary air duct outlet B on the body, and the air blown out from the negative pressure air duct outlet C are mixed and superimposed at the front end of the hair dryer outlet. The hair dryer has a large air output and appropriate wind temperature, providing a good user experience.

[0057] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes or modifications within the scope of the claims, which does not affect the essence of the present invention. In the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other arbitrarily.

Claims

1. A hot and cold air mixed blowing hair dryer, characterized in that: It comprises a handle (1) and a body (2), both of which are provided with air ducts; The handle air duct includes a handle main air duct and a handle auxiliary air duct which are not connected to each other, and the body air duct includes a body main air duct and a body auxiliary air duct which are not connected to each other; the handle main air duct and the body main air duct are connected and can flow through a high-temperature fluid; the handle auxiliary air duct and the body auxiliary air duct are connected and can flow through a low-temperature fluid; The body (2) comprises an outer cylinder (3) and a pressurizing chamber (4) arranged in the outer cylinder (3); the interior of the pressurizing chamber (4) forms a main air duct of the body, and the outer wall of the pressurizing chamber (4) and the inner wall of the outer cylinder (3) form a secondary air duct of the body; A heating mechanism (5) is installed in the handle (1), the interior of the heating mechanism (5) forms a main air duct of the handle, and the gap between the exterior of the heating mechanism (5) and the inner wall of the handle forms a secondary air duct of the handle; The heating mechanism (5) comprises a heating wire bracket (51) and a heating wire installed in the heating wire bracket (51); a notch (D) is provided on the side of the heating wire bracket (51) facing the boosting chamber (4); a boss (E) is provided at a corresponding position of the boosting chamber (4); the notch (D) of the heating wire bracket matches and connects with the boss (E) of the boosting chamber to form a connection port between the main air duct of the handle and the main air duct of the body.

2. The hot and cold air mixed blowing hair dryer according to claim 1, characterized in that: The heating wire bracket (51) is connected to the pressurizing chamber (4) via a sealing element (7).

3. The hot and cold air mixed blowing hair dryer according to claim 2, characterized in that: The sealing element (7) is a rubber sealing ring.

4. The hot and cold air mixed blowing hair dryer according to claim 1, characterized in that: The heating wire bracket (51) is eccentrically mounted inside the handle (1).

5. The hot and cold air mixed blowing hair dryer according to claim 4, characterized in that: A plurality of first ribs are arranged on the outer wall of the heating wire support (51), and the plurality of first ribs are arranged on the other side of the heating wire support (51) where the notch (D) is located.

6. The hot and cold air mixed blowing hair dryer according to claim 4, characterized in that: The outer wall of the heating wire bracket (51) is provided with a plurality of first ribs and a plurality of second ribs, the first ribs and the second ribs are arranged on opposite sides, the thickness of the first ribs is greater than the thickness of the second ribs, and the first ribs are arranged on the other side of the heating wire bracket where the notch (D) is located.

7. The hot and cold air mixed blowing hair dryer according to claim 1, characterized in that: The body (2) is also provided with a negative pressure air duct that passes through the front and rear ends of the body (2).

8. The hot and cold air mixed blowing hair dryer according to claim 7, characterized in that: The boosting chamber (4) has a hollow portion (43) and a channel body (44) surrounding the hollow portion (43); the hollow portion (43) of the boosting chamber is a part of the negative pressure air duct; the channel body (44) of the boosting chamber forms a main air duct of the body; and an auxiliary air duct of the body is formed between the outer wall of the channel body (44) of the boosting chamber and the inner wall of the outer cylinder (3).

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