A self-cooling hair dryer

Abstract

The present invention provides a self-cooling hair dryer. A main air duct capable of flowing high-temperature fluid and a secondary air duct capable of flowing low-temperature fluid are provided inside the hair dryer. The low-temperature fluid can cool components inside the hair dryer, such as structures forming the main air duct of the handle and the main air duct of the body, control elements inside the hair dryer, etc. On the one hand, it can extend the service life of the hair dryer, and on the other hand, it can also prevent the overheating of the outer shell of the hair dryer from affecting the blowing experience.

Description

Technical Field

[0001] The present invention relates to the technical field of hand-held appliances, and particularly to a self-cooling hair dryer. Background Art

[0002] A hair dryer is composed of a group of heating wires and a high-speed small fan. When powered on, the heating wires generate heat, and the air blown by the fan passes through the heating wires and becomes hot air. If only the small fan rotates and the heating wires are not hot, then only air is blown out without heat. The air blown out by the hair dryer is dry air. If used for too long, it is easy to cause water loss and thermal damage. The secret to minimizing damage is to first pat dry the water on the hair with a towel, gently comb the hair with your hand, and then use the hair dryer.

[0003] The existing hair dryer only has a single air duct inside to allow the flow of high-temperature fluid heated by the heating wire. The high-temperature fluid not only causes thermal damage to the components inside the hair dryer and reduces their lifespan, but also damages the user's hair quality and scalp. Summary of the Invention

[0004] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a self-cooling hair dryer.

[0005] According to the self-cooling hair dryer provided by the present invention, a self-cooling hair dryer includes a handle and a body. A handle air duct extending along the length direction of the handle is arranged inside the handle, and a body air duct extending along the length direction of the body is arranged inside the body. The handle air duct and the body air duct are communicated; an air inlet communicating with the handle air duct is arranged at the bottom end of the handle, and an air outlet communicating with the body air duct is arranged at the front end of the body; the handle air duct includes a handle main air duct and a handle secondary air duct, and the body air duct includes a body main air duct and a body secondary air duct. The handle main air duct and the body main air duct are communicated and can allow the flow of high-temperature fluid; the handle secondary air duct and the body secondary air duct are communicated and can allow the flow of low-temperature fluid; a head is arranged at the front end of the body, and the overall shape of the surface of the head is oval or quasi-oval.

[0006] Preferably, the body includes an outer cylinder and a pressurizing chamber arranged inside the outer cylinder. The inside of the pressurizing chamber forms the body main air duct, and the space between the outer wall of the pressurizing chamber and the inner wall of the outer cylinder forms the body secondary air duct; an air outlet of the body main air duct opposite to the pressurizing chamber is arranged on the head, and the edge of the head is not hermetically connected to the outer cylinder, and the gap between the edge of the head and the outer cylinder forms the air outlet of the body secondary air duct.

[0007] Preferably, a negative pressure air duct penetrating the front and rear ends of the body is arranged on the body.

[0008] Preferably, the pressurizing chamber has a hollow part and a channel body surrounding the hollow part. The hollow part of the pressurizing chamber is part of the negative pressure air duct, the channel body of the pressurizing chamber forms the main body air duct, and a secondary body air duct is formed between the outer wall of the channel body of the pressurizing chamber and the inner wall of the outer cylinder.

[0009] Preferably, the machine head includes an inner ring and an outer ring connected in a nested manner. There is a gap channel between the inner ring and the outer ring. The inner ring of the machine head faces the hollow part of the control chamber and forms the air outlet of the negative pressure air duct; the edge of the outer ring of the machine head is non-sealingly connected to the outer cylinder, and the gap between the edge of the outer ring and the outer cylinder forms the air outlet of the first secondary body air duct; the gap channel of the machine head faces the channel body of the pressurizing chamber and forms the air outlet of the main body air duct.

[0010] Preferably, the outer edge of the machine head is provided with an inclination angle.

[0011] Preferably, the minimum distance from the gap channel to the long-axis end point of the machine head surface is greater than the minimum distance from the gap channel to the short-axis end point of the machine head surface.

[0012] Preferably, the minimum distance from the gap channel to the long-axis end point of the machine head surface is greater than 0.8 cm and less than or equal to 2.4 cm; the minimum distance from the gap channel to the short-axis end point of the machine head surface is greater than or equal to 0.8 cm and less than 2.4 cm.

[0013] Preferably, the handle and the body are detachably installed.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] For the self-cooling hair dryer provided by the present invention, a main air duct and a secondary air duct are arranged in the hair dryer. The heat generated during the use of the components in the hair dryer can be taken away by the cold air in the secondary air duct in time, avoiding the problem of the hair dryer being hot to the touch after long-term use. At the same time, the service life of the hair dryer can also be extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By reading the following detailed description of the non-limiting embodiments with reference to the accompanying drawings, other features, objects, and advantages of the present invention will become more apparent:

[0017] Figure 1 is a schematic structural diagram of the hair dryer according to the first embodiment of the present invention;

[0018] Figure 2 is a schematic structural diagram of the hair dryer according to the second embodiment of the present invention;

[0019] Figure 3 is an exploded view of the hair dryer of the present invention;

[0020] Figure 4 is a schematic structural diagram of the machine head;

[0021] Figure 5 is the right view of Figure 4 ;

[0022] Figure 6 is the structural schematic diagram of the pressurization chamber.

[0023] As shown in the figure:

[0024] 1 - handle;

[0025] 2 - body;

[0026] 3 - outer cylinder;

[0027] 4 - pressurization chamber;

[0028] 8 - machine head;

[0029] 41 - pressurization chamber channel body;

[0030] 42 - hollow part of the pressurization chamber;

[0031] 81 - inner ring of the machine head;

[0032] 82 - outer ring of the machine head;

[0033] 83 - clearance channel;

[0034] 84 - outer edge of the machine head;

[0035] A - main air outlet of the body;

[0036] B - secondary air outlet of the body;

[0037] C - negative pressure air outlet;

[0038] G - first secondary air outlet of the body

[0039] D - minimum distance from the clearance channel to the long - axis end point of the machine - head surface;

[0040] d - minimum distance from the clearance channel to the short - axis end point of the machine - head surface;

[0041] E - long - axis end point of the machine - head surface;

[0042] F - short - axis end point of the machine - head surface Specific embodiments

[0043] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several changes and improvements can still be made. These all fall within the protection scope of the present invention.

[0044] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application.

[0045] First Embodiment:

[0046] As Figure 1 , Figures 3 to 6 shown, a self-cooling hair dryer includes a detachable handle 1 and a body 2. A handle air duct extending along the length direction of the handle 1 is provided inside the handle 1, and a body air duct extending along the length direction of the body 2 is provided inside the body 2. The handle air duct and the body air duct are communicated; an air inlet communicated with the handle air duct is provided at the bottom end of the handle 1, and an air outlet communicated with the body air duct is provided at the front end of the body 2; the handle air duct includes a handle main air duct and a handle secondary air duct, and the body air duct includes a body main air duct and a body secondary air duct. The handle main air duct and the body main air duct are communicated and can flow through high-temperature fluid; the handle secondary air duct and the body secondary air duct are communicated and can flow through low-temperature fluid; a machine head 8 is provided at the front end of the said body, and the overall shape of the surface of the machine head 8 is oval or quasi-oval.

[0047] The body 2 includes an outer cylinder 3 and a pressurizing chamber 4 provided inside the outer cylinder 3. The inside of the pressurizing chamber 4 forms the body main air duct, and the space between the outer wall of the pressurizing chamber 4 and the inner wall of the outer cylinder 3 forms the body secondary air duct. The machine head 8 is provided with a body main air duct outlet A opposite to the pressurizing chamber 4. The edge of the machine head is not hermetically connected to the outer cylinder 3, and the gap between the edge of the machine head and the outer cylinder 3 forms an outlet B of the body secondary air duct. Further, an inclination angle is provided at the outer edge 84 of the machine head, and the minimum distance D from the gap channel 83 to the long-axis end point E of the machine head surface is greater than the minimum distance D from the gap channel 83 to the short-axis end point F of the machine head surface. The minimum distance D from the gap channel 83 to the long-axis end point E of the machine head surface is greater than 0.8 cm and less than or equal to 2.4 cm; the minimum distance d from the gap channel 83 to the short-axis end point F of the machine head surface is greater than or equal to 0.8 cm and less than 2.4 cm.

[0048] During use, the air at the bottom and / or side wall of the handle 1 enters from the air inlet at the bottom end of the handle 1 and is divided into two paths. One path enters the handle main air duct, and this part of the air is heated into high-temperature fluid. The high-temperature fluid then enters the body main air duct communicated with the handle main air duct. The pressurizing chamber 4 has a cavity, and the high-temperature fluid flows through the cavity of the pressurizing chamber 4 and is finally blown out from the body main air duct outlet A on the machine head. The diameter of the body main air duct outlet A gradually decreases from one end of the machine head to the other end, forming a wind gathering ring, and the wind force of the high-temperature fluid flowing out from the body main air duct outlet A will increase.

[0049] Another stream of air entering from the handle 1 enters the handle secondary air duct. This part of the air is not heated and is thus called the low-temperature fluid. The low-temperature fluid enters the body secondary air duct from the handle secondary air duct. The body secondary air duct is formed by the inner wall of the outer cylinder 3 and the outer wall of the pressurization chamber 4. The low-temperature fluid in the secondary air duct finally blows out from the body secondary air duct outlet B on the machine head.

[0050] The low-temperature fluid in the handle secondary air duct can cool down the structural components that make up the handle main air duct; at the same time, the low-temperature fluid in the body secondary air duct can cool down the hair dryer components inside the body and the structural parts that make up the body main air duct. The low-temperature fluid and the high-temperature fluid blow out from the body secondary air duct outlet B and the body main air duct outlet A respectively.

[0051] Since the body secondary air duct outlet B is arranged around the body main air duct outlet A, and the outer edge 84 of the machine head is provided with an inclination angle, the Coanda effect will be formed, that is, the low-temperature fluid blown out from the body secondary air duct outlet B will automatically approach the high-temperature fluid blown out from the body main air duct outlet A. The low-temperature fluid and the high-temperature fluid are superimposed to form a cold and hot mixed wind, so that the blown air temperature is appropriate and the user experience is improved.

[0052] Second Embodiment:

[0053] As Figures 2 to 6 shown, a self-cooling hair dryer includes a detachable handle 1 and a body 2. A handle air duct extending along its length direction is arranged inside the handle 1, and a body air duct extending along its length direction is arranged inside the body 2. The handle air duct and the body air duct are communicated; an air inlet communicated with the handle air duct is arranged at the bottom end of the handle 1, and an air outlet communicated with the body air duct is arranged at the front end of the body 2; the handle air duct includes a handle main air duct and a handle secondary air duct, the body air duct includes a body main air duct and a body secondary air duct, the handle main air duct and the body main air duct are communicated and can flow through high-temperature fluid; the handle secondary air duct and the body secondary air duct are communicated and can flow through low-temperature fluid; the front end of the body is provided with a machine head 8, and the overall shape of the surface of the machine head 8 is oval or quasi-oval.

[0054] The body 2 includes an outer cylinder 3 and a pressurization chamber 4 arranged inside the outer cylinder 3. The inside of the pressurization chamber 4 forms the body main air duct, and the body secondary air duct is formed between the outer wall of the pressurization chamber 4 and the inner wall of the outer cylinder 3; the body 2 is provided with a negative pressure air duct penetrating the front and rear ends of the body 2. The pressurization chamber 4 has a hollow part 42 and a channel body 41 surrounding the hollow part 42. The hollow part 42 of the pressurization chamber is part of the negative pressure air duct, the channel body 41 of the pressurization chamber forms the body main air duct, and the body secondary air duct is formed between the outer wall of the pressurization chamber channel body 41 and the inner wall of the outer cylinder 3.

[0055] The machine head 8 includes an inner ring 81 and an outer ring 82 that are nested and connected. There is a gap channel 83 between the inner ring 81 and the outer ring 82. The inner ring 81 of the machine head 8 faces the hollow part 42 of the control chamber and forms the air outlet C of the negative pressure air duct; the edge of the outer ring 82 of the machine head is non-sealingly connected to the outer cylinder 3, and the gap between the edge of the outer ring 82 and the outer cylinder 3 forms the air outlet B of the body part auxiliary air duct; the gap channel 83 of the machine head faces the channel body 41 of the pressurizing chamber and forms the air outlet A of the body part main air duct.

[0056] Furthermore, the outer edge 84 of the machine head is provided with an inclination angle. The minimum distance D from the gap channel 83 to the long-axis end point E of the machine head surface is greater than the minimum distance D from the gap channel 83 to the short-axis end point F of the machine head surface. The minimum distance D from the gap channel 83 to the long-axis end point E of the machine head surface is greater than 0.8 cm and less than or equal to 2.4 cm; the minimum distance d from the gap channel 83 to the short-axis end point F of the machine head surface is greater than or equal to 0.8 cm and less than 2.4 cm.

[0057] During use, the air at the bottom and / or side wall of the handle 1 enters from the air inlet at the bottom end of the handle 1 and is divided into two paths. One path enters the main air duct of the handle, and this part of the air is heated into a high-temperature fluid. The high-temperature fluid then enters the main air duct of the body part that is communicated with the main air duct of the handle. After the high-temperature fluid enters the channel body 41 of the pressurizing chamber, it finally blows out from the air outlet A of the main air duct of the body part on the machine head 8. Since the high-temperature fluid blows out from the air outlet A of the main air duct of the body part, and the air outlet A of the main air duct of the body part is arranged around the air outlet C of the negative pressure air duct, the air at the rear end of the body of the hair dryer will be affected by the negative pressure, enter from the negative pressure air duct and finally blow out from the air outlet C of the negative pressure air duct.

[0058] The other path of air entering from the handle 1 enters the auxiliary air duct of the handle. This part of the air is not heated and is therefore called a low-temperature fluid. The low-temperature fluid enters the auxiliary air duct of the body part from the auxiliary air duct of the handle. The auxiliary air duct of the body part is composed of the inner wall of the outer cylinder 3 and the outer wall of the channel body 41 of the pressurizing chamber. The low-temperature fluid in the auxiliary air duct finally blows out from the air outlet G of the first auxiliary air duct of the body part on the machine head.

[0059] The low-temperature fluid in the handle secondary air duct can cool down the structural components that make up the handle primary air duct; at the same time, the low-temperature fluid in the body secondary air duct can cool down the blower components inside the body and the structural components that make up the body primary air duct. The low-temperature fluid and the high-temperature fluid are respectively blown out from the outlet G of the first body secondary air duct and the outlet A of the body primary air duct. Since the outlet G of the first body secondary air duct is arranged around the outlet A of the body primary air duct, and the outer edge 84 of the machine head is provided with an inclination angle, the Coanda effect will be formed, that is, the low-temperature fluid blown out from the outlet G of the first body secondary air duct will automatically approach the high-temperature fluid blown out from the outlet A of the body primary air duct. The high-temperature fluid, the low-temperature fluid and the air flowing out of the negative pressure air duct are superimposed at the outlet position. According to the superposition amplification effect, the air volume blown out at the outlet is large, and because the low-temperature and high-temperature fluids are mixed, the temperature of the blown air is appropriate, which can improve the user experience.

[0060] The specific embodiments of the present invention have been described above. 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. Without conflict, the embodiments of the present application and the features in the embodiments can be arbitrarily combined with each other.

Claims

1. A self-cooling hair dryer, characterized in that, it includes a handle (1) and a body (2). A handle air duct extending along the length direction of the handle is arranged inside the handle (1), and a body air duct extending along the length direction of the body is arranged inside the body (2). The handle air duct and the body air duct are communicated; an air inlet communicated with the handle air duct is arranged at the bottom end of the handle (1), and an air outlet communicated with the body air duct is arranged at the front end of the body (2); the handle air duct includes a handle main air duct and a handle auxiliary air duct, and the body air duct includes a body main air duct and a body auxiliary air duct. The handle main air duct and the body main air duct are communicated and can flow through high-temperature fluid; the handle auxiliary air duct and the body auxiliary air duct are communicated and can flow through low-temperature fluid; a machine head (8) is arranged at the front end of the body, and the overall shape of the surface of the machine head (8) is oval or quasi-oval; Air enters from the air inlet and is divided into two paths. One path enters the handle main air duct, and this part of the air is heated into high-temperature fluid. The high-temperature fluid then enters the body main air duct communicated with the handle main air duct; the other path of air enters the handle auxiliary air duct, and this part of the air is low-temperature fluid. The low-temperature fluid enters the body auxiliary air duct from the handle auxiliary air duct, and the low-temperature fluid and the high-temperature fluid are respectively blown out from the air outlet of the body auxiliary air duct and the air outlet of the body main air duct; the body (2) includes an outer cylinder (3) and a pressurizing chamber (4) arranged inside the outer cylinder (3). The inside of the pressurizing chamber (4) forms the body main air duct, and the body auxiliary air duct is formed between the outer wall of the pressurizing chamber (4) and the inner wall of the outer cylinder (3); the machine head (8) is provided with an air outlet (A) of the body main air duct opposite to the pressurizing chamber (4). The edge of the machine head is non-sealingly connected to the outer cylinder (3), and the gap between the edge of the machine head and the outer cylinder (3) forms the air outlet (B) of the body auxiliary air duct; the body (2) is provided with a negative pressure air duct penetrating through the front and rear ends of the body (2); the pressurizing chamber has a hollow part (42) and a channel body (41) surrounding the hollow part (42). The hollow part (42) of the pressurizing chamber is part of the negative pressure air duct, the channel body (41) of the pressurizing chamber forms the body main air duct, and the body auxiliary air duct is formed between the outer wall of the channel body (41) of the pressurizing chamber and the inner wall of the outer cylinder (3); the machine head (8) includes an inner ring (81) and an outer ring (82) which are nested and connected. There is a gap channel (83) between the inner ring (81) and the outer ring (82). The inner ring of the machine head (8) is opposite to the hollow part (42) of the pressurizing chamber and forms an air outlet (C) of the negative pressure air duct; the edge of the outer ring of the machine head is non-sealingly connected to the outer cylinder (3), and the gap between the edge of the outer ring (82) and the outer cylinder (3) forms the air outlet (B) of the body auxiliary air duct; the gap channel (83) of the machine head is opposite to the channel body (41) of the pressurizing chamber and forms an air outlet (A) of the body main air duct; The outer edge (84) of the machine head is provided with an inclination angle.

2. The self-cooling hair dryer according to claim 1, characterized in that, the minimum distance (D) from the gap channel (83) to the long-axis end point (E) of the surface of the machine head is greater than the minimum distance (d) from the gap channel (83) to the short-axis end point (F) of the surface of the machine head.

3. The self-cooling hair dryer according to claim 2, Characterized in that, The minimum distance (D) from the gap channel (83) to the long-axis end point (E) of the nose surface is greater than 0.8 cm and less than or equal to 2.4 cm; the minimum distance (d) from the gap channel (83) to the short-axis end point (F) of the nose surface is greater than or equal to 0.8 cm and less than 2.4 cm.

4. The self-cooling hair dryer according to claim 1, Characterized in that, The handle (1) and the body (2) are detachably mounted.

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