Hair dryer

Abstract

The invention relates to the technical field of household appliances, and discloses a hair drier. The air blower comprises an air blowing cylinder, an air supply channel is formed in an inner cavity, and an air outlet communicated with the air supply channel is formed in the first end of the air blowing cylinder; one end of the handle is connected to the side of the blowing cylinder, a first air inlet is formed in the other end of the handle, and an inner cavity of the handle communicates with the first air inlet and the air supply duct; the hot air device is arranged in the handle and used for converting airflow entering from the first air inlet into hot air and then conveying the hot air into the air supply duct so that hot air airflow can be formed in the air supply duct. The first air inlet of the hair dryer is formed in the handle, the hot air device is arranged in the handle, airflow enters from the first air inlet and then is converted into hot air through the hot air device, the hot air is guided out from the air outlet position, namely the air outlet, of the hair dryer, and the flow guide path of the hot air airflow is greatly increased; the temperature of hot air flow guided out of the air outlet in the tail end of the hair dryer is mild, and it is guaranteed that the hot air flow cannot damage scalp and hair.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of household appliances, in particular to a hair dryer. BACKGROUND

[0002] The main working principle of the hair dryer is that the fan is rotated by the motor to suck the air outside into the hair dryer, and then the heated air is blown out through the nozzle after being heated by the heating element, thereby quickly drying the hair.

[0003] The current setting position of the heating component of the hair dryer is often too close to the nozzle, so that the hot air flow path of the heating component is short, which causes the temperature of the air flow blown out by the nozzle to be too high, which is easy to cause damage to the scalp and hair. SUMMARY

[0004] Therefore, the present application provides a hair dryer to solve the problem that the current setting position of the heating component of the hair dryer is often too close to the nozzle, which causes the temperature of the air flow blown out by the nozzle to be too high, which is easy to cause damage to the scalp and hair.

[0005] The present application provides a hair dryer, comprising: A hair dryer barrel, the inner cavity of which forms an air supply air duct, and the first end of the hair dryer barrel is provided with an air outlet communicating with the air supply air duct; A handle, one end of which is connected to the side of the hair dryer barrel, and the other end of which is provided with a first air inlet, and the inner cavity of the handle is in communication with the first air inlet and the air supply air duct, respectively; A hot air device, which is arranged in the handle, is used for converting the air flow entering from the first air inlet into hot air, and then conveying the hot air into the air supply air duct to form a hot air flow in the air supply air duct.

[0006] Beneficial effects: the present application provides a hair dryer, the handle is arranged on the side of the hair dryer barrel, the air inlet position of the hair dryer, i.e. the first air inlet, is arranged on the handle, and the hot air device is arranged in the handle, the air flow entering from the first air inlet is converted into hot air by the hot air device, and then the hot air is guided out from the air outlet arranged on the hair dryer barrel, the guide path of the hot air flow is greatly increased, so that the temperature of the hot air flow guided out from the air outlet at the end of the hair dryer barrel is moderate, and it is ensured that the hot air flow will not cause damage to the scalp and hair.

[0007] In an alternative embodiment, the hot air device comprises: A heating body arranged in the handle; A fan arranged in the handle, which is used for sucking the air in the external environment into the handle from the first air inlet, guiding it to the heating body, and conveying the hot air heated by the heating body into the air supply air duct.

[0008] Beneficial effects: By setting the heating body and the fan in the handle, the center of gravity of the hair dryer falls on the handle, and the user's operation experience is better; and it is convenient for the heating body, the fan and other electrical elements to be connected with the external circuit; at the same time, it is also convenient for the handle to be disassembled and assembled with the hair dryer barrel.

[0009] In an alternative embodiment, the heating body is located near one end of the hair dryer barrel, and the fan is located between the first air inlet and the heating body.

[0010] Beneficial effects: By setting the heating body near the hair dryer barrel and the fan near the first air inlet, i.e. setting the fan upstream of the heating body along the airflow direction, it is ensured that the airflow flowing through the fan is normal temperature air, and the fan itself will not contact high temperature airflow, thereby avoiding the overheating damage of the high temperature airflow to the fan and ensuring the service life of the fan.

[0011] In an alternative embodiment, a control panel is further arranged in the handle, the control panel is arranged between the fan and the heating body, and is electrically connected with the fan and the heating body respectively.

[0012] Beneficial effects: By arranging the control panel between the fan and the heating body, the control panel is electrically connected with the fan and the heating body respectively; at the same time, by arranging the control panel upstream of the heating body, it is also ensured that the airflow flowing through the control panel is normal temperature air, and the control panel itself will not contact high temperature airflow, thereby avoiding the overheating damage of the high temperature airflow to the control panel and ensuring the service life of the control panel.

[0013] In an alternative embodiment, the handle has a holding section and an air inlet section, the holding section is arranged near the hair dryer barrel, the air inlet section is located at one end of the holding section away from the hair dryer barrel, and the first air inlet is configured to surround a plurality of air inlet holes arranged on the outer periphery of the air inlet section.

[0014] Beneficial effects: By arranging the holding section, the user can hold it conveniently, and by arranging the first air inlet on the air inlet section, the user's hand is prevented from blocking the first air inlet during use.

[0015] In an alternative embodiment, the side of the hair dryer barrel is provided with an air inlet air duct in communication with the air supply air duct, one end of the handle is connected to the air inlet air duct, and the inner cavity of the handle is in communication with the air inlet air duct. The hot air device is used to deliver the hot air into the air supply air duct through the air inlet air duct, so as to form a spiral hot air flow in the air supply air duct.

[0016] Beneficial effects: By setting the air inlet duct in communication with the air supply duct, the hot air is delivered to the air supply duct through the air inlet duct, and under the air supply of the air supply duct, the heated hot air flow forms a spiral hot air flow in the air supply duct. Compared with the straight blowing air flow, it has greater air outlet speed and air outlet volume, thereby improving the blowing efficiency.

[0017] In an alternative embodiment, the angle between the central axis of the air inlet duct and the central axis of the air supply duct is θ, and θ is less than 90°.

[0018] Beneficial effects: The central axis of the air inlet duct and the central axis of the air supply duct are connected at an acute angle, which is beneficial to the high-speed hot air flow generated by the hot air device to rush into the air inlet duct and form a force towards the air outlet of the blowing cylinder. Thus, a spiral hot air flow is formed, the air outlet speed and air outlet volume of the hair dryer are improved, and the blowing efficiency is further improved.

[0019] In an alternative embodiment, the side of the blowing cylinder is provided with an air flow inlet, and an interface structure is fixedly arranged on a portion of the blowing cylinder located outside the periphery of the air flow inlet. The interface structure is fixedly connected with the handle. The air inlet duct is fixedly arranged in the interface structure, the air inlet end of the air inlet duct is in communication with the inner cavity of the handle, and the air outlet end of the air inlet duct is in communication with the air flow inlet.

[0020] Beneficial effects: By arranging the interface structure on the side of the blowing cylinder, the blowing cylinder and the handle are conveniently connected, and by arranging the air inlet duct in the interface structure, the air inlet duct can be hidden, and the overall structure of the hair dryer is improved in appearance.

[0021] In an alternative embodiment, the blowing cylinder is configured as a double-layer structure, the blowing cylinder has an inner layer cylinder body and an outer layer cylinder body, and a cavity is formed between the inner layer cylinder body and the outer layer cylinder body. The air flow inlet penetrates the outer layer cylinder body and the inner layer cylinder body, and the air outlet end of the air inlet duct penetrates the outer layer cylinder body and is connected to the air flow inlet of the inner layer cylinder body.

[0022] Beneficial effects: The double-layer structure of the blowing cylinder can play a role in preventing scalding and heat insulation, and reduce the surface temperature of the blowing cylinder. At the same time, the double-layer structure can make the structure of the blowing cylinder more firm and reliable. Moreover, the air outlet end of the air inlet duct is directly inserted into the air flow inlet of the inner layer cylinder body through the outer layer cylinder body, which can effectively prevent the hot air flow from entering the cavity between the inner layer cylinder body and the outer layer cylinder body.

[0023] In an alternative embodiment, at least one end of the blowpipe is provided with an opening communicating with the cavity, and the hair dryer further comprises an end cover which is detachably connected at the opening.

[0024] Beneficial effects: at least one end of the blowpipe is provided with an opening communicating with the cavity, facilitating the blowpipe with double-layer structure to be integrally molded; the end cover is detachably connected at the opening, playing a decorative role while preventing dirt from entering the cavity between the inner and outer cylinder. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0026] Figure 1 A structure diagram of a hair dryer provided by the present application; Figure 2 A sectional view of a hair dryer provided by the present application; Figure 3 A sectional view of a hair dryer provided by the present application; Figure 2 A local enlarged schematic view of A in the middle; Figure 4 A schematic diagram of air flow direction of a hair dryer provided by the present application; Figure 5 A longitudinal sectional view of a blowpipe provided by the present application; Figure 6 Another longitudinal sectional view of a blowpipe provided by the present application; Figure 7 A structure diagram of a blowpipe provided by the present application; Figure 8 An air flow simulation effect diagram of a hair dryer provided by the present application; Figure 9 A transverse sectional view of a blowpipe provided by the present application; Figure 10 Still another longitudinal sectional view of a blowpipe provided by the present application; Figure 11 A longitudinal sectional view of a blowpipe provided by the present application (without assembling the end cover); Figure 12 A structure diagram of an end cover provided by the present application.

[0027] Explanation of reference signs: 100, air outlet; 101, air supply duct; 102, air inlet duct; 1021, air outlet end; 1022, air inlet end; 103, first inner wall section; 104, second inner wall section; L1, first section; L2, second section; 110, air outlet; 120, second air inlet; 130, air flow inlet; 140, interface structure; 150, inner layer barrel; 160, outer layer barrel; 170, opening; 180, internal thread; 200, handle; 210, first air inlet; 300, hot air device; 310, heating body; 320, fan; 400, control panel; 500, end cover; 510, external thread. DETAILED DESCRIPTION

[0028] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0029] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms “center”, “upper”, “lower”, “left”, “right”, “vertical”, “horizontal”, “inner”, “outer” and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms “first”, “second”, “third” are only for the purpose of description and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms “mounting”, “connection”, “connecting” should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0032] The following will be describedFigures 1-12 The embodiments of the present application are described.

[0033] According to the embodiments of the present application, a hair dryer is provided, as shown in Figure 1 、 Figure 2 , comprising: a blowing barrel 100, a handle 200 and a hot air device 300.

[0034] The inner cavity of the blowing barrel 100 forms an air supply air duct 101, and the first end of the blowing barrel 100 is provided with an air outlet 110 which is in communication with the air supply air duct 101; one end of the handle 200 is connected to the side of the blowing barrel 100, and the other end is provided with a first air inlet 210, and the inner cavity of the handle 200 is in communication with the first air inlet 210 and the air supply air duct 101 respectively; the hot air device 300 is arranged in the handle 200, and is used to convert the airflow entering from the first air inlet 210 into hot air, and then deliver the hot air into the air supply air duct 101, so as to form a hot air flow in the air supply air duct 101.

[0035] In the above embodiments, the handle 200 is arranged on the side of the blowing barrel 100, and the air inlet position of the hair dryer, i.e. the first air inlet 210, is arranged on the handle 200, and the hot air device 300 is arranged in the handle 200, so that the airflow entering from the first air inlet 210 is converted into hot air by the hot air device 300, and then is guided out from the air outlet position, i.e. the air outlet 110, arranged on the blowing barrel 100, and the flow path of the hot air flow is greatly increased, so that the temperature of the hot air flow guided out from the air outlet 110 at the end of the blowing barrel 100 is moderate, and it is ensured that the hot air flow will not cause damage to the scalp and hair.

[0036] Specifically, the hot air device 300 is arranged in the inner cavity of the handle 200, and the inner cavity of the handle 200 is in communication with the outside through the first air inlet 210, so that the airflow in the outside can enter the inner cavity of the handle 200 through the flow guiding effect of the flow guiding component in the hot air device 300; and through the heating effect of the heating component in the hot air device 300, the airflow is converted into hot air, and then the hot air is further delivered into the air supply air duct 101 by the flow guiding component, so as to form a hot air flow in the air supply air duct 101, and finally the hot air flow is guided out from the air outlet 110 which is in communication with the air supply air duct 101 at the end of the blowing barrel 100, for the user to blow the head.

[0037] In some embodiments, as shown in Figure 1 、 Figure 2 , the hot air device 300 comprises: a heating body 310 and a fan 320.

[0038] The heating body 310 is arranged in the handle 200; the fan 320 is arranged in the handle 200, and the fan 320 is used to suck the air in the external environment into the handle 200 from the first air inlet 210, and guide the air to the heating body 310, and then deliver the hot air heated by the heating body 310 into the air supply air duct 101.

[0039] In the above embodiments, by arranging the heating body 310 and the fan 320 in the handle 200, the center of gravity of the hair dryer falls on the handle 200, the user's operation experience is better, and it is convenient to connect the electrical elements such as the heating body 310 and the fan 320 to the external circuit; at the same time, it is also convenient to disassemble and assemble the handle 200 and the blowpipe 100.

[0040] Specifically, the heating body 310 is a heating component in the hot air device 300, and the fan 320 is a flow guiding component in the hot air device 300. The airflow from the outside can enter the inner cavity of the handle 200 through the flow guiding effect of the fan 320; and through the heating effect of the heating body 310, the airflow is converted into hot air, and the fan 320 further delivers the hot air into the air delivery air duct 101, so as to form a hot air flow in the air delivery air duct 101, and finally guide the hot air out of the air outlet 110 at the end of the blowpipe 100 for use.

[0041] Further, the installation positions of the heating body 310 and the fan 320 in the handle 200 are not limited in the embodiments. As an embodiment, the heating body 310 is arranged close to the blowpipe 100 and the fan 320 is arranged close to the first air inlet 210; as another embodiment, the fan 320 is arranged close to the blowpipe 100 and the heating body 310 is arranged close to the first air inlet 210.

[0042] In some embodiments, as shown in FIG. 1, the heating body 310 is located at one end close to the blowpipe 100, and the fan 320 is located between the first air inlet 210 and the heating body 310. Figure 2

[0043] In the above embodiments, the heating body 310 is arranged close to the blowpipe 100 and the fan 320 is arranged close to the first air inlet 210, that is, the fan 320 is arranged upstream of the heating body 310 in the airflow direction, which ensures that the airflow flowing through the fan 320 is normal temperature air, and the fan 320 itself will not contact high temperature airflow, thereby avoiding the overheating damage of the high temperature airflow to the fan 320, and ensuring the service life of the fan 320.

[0044] In some embodiments, as shown in FIG. 1, the handle 200 further comprises a control panel 400, the control panel 400 is arranged between the fan 320 and the heating body 310, and is electrically connected with the fan 320 and the heating body 310 respectively. Figure 2

[0045] ​​In the above embodiment, the control board 400 is arranged between the fan 320 and the heating body 310, so that the control board 400 is electrically connected with the fan 320 and the heating body 310 respectively; meanwhile, the control board 400 is located upstream of the heating body 310, so that the air flowing through the control board 400 is normal temperature air, and the control board 400 itself will not be in contact with high temperature air, thereby avoiding the overheat damage of the high temperature air to the control board 400, and ensuring the service life of the control board 400.

[0046] Specifically, the control board 400 is electrically connected with the fan 320 and the heating body 310 through a plurality of wire bundles respectively, and the wire bundles for electrical connection are arranged in the inner cavity of the handle 200. The control board 400 is electrically connected with the corresponding operation buttons, so as to control the fan 320 and the heating body 310 to work through the control board 400 by the operation buttons.

[0047] In some embodiments, as shown in Figure 1 , Figure 2 , the handle 200 has a holding section and an air inlet section, the holding section is arranged close to the hair dryer 100, the air inlet section is located at the end of the holding section away from the hair dryer 100, and the first air inlet 210 is configured to surround a plurality of air inlet holes arranged on the outer periphery of the air inlet section.

[0048] In the above embodiment, the holding section is arranged to facilitate the user to hold, and the first air inlet 210 is arranged on the air inlet section to avoid the user's hand blocking the first air inlet 210 during use.

[0049] Further, the handle 200 also has a heating body mounting section, which is located at the end of the holding section close to the hair dryer 100 and connected with the side of the hair dryer 100, and the heating body 310 is arranged in the heating body mounting section. The heating body 310 is arranged in the heating body mounting section to avoid scalding the user's hand during use.

[0050] In some embodiments, as shown in Figure 3 , Figure 4 , the side of the hair dryer 100 is provided with an air inlet duct 102 communicating with the air supply duct 101, one end of the handle 200 is connected at the air inlet duct 102, and the inner cavity of the handle 200 communicates with the air inlet duct 102; the hot air device 300 is used to deliver hot air into the air supply duct 101 through the air inlet duct 102, so as to form a spiral hot air flow in the air supply duct 101.

[0051] In the above embodiment, the air inlet duct 102 communicating with the air supply duct 101 is arranged, and the hot air is delivered into the air supply duct 101 through the air inlet duct 102, so that the heated hot air flow forms a spiral hot air flow in the air supply duct 101 under the air supply of the air supply duct 101. Compared with the straight blowing air flow, the spiral hot air flow has a larger air outlet speed and air outlet volume, thereby improving the blowing efficiency.

[0052] Specifically, the air inlet duct 102 is arranged as a transition section between the inner cavity of the handle 200 and the air supply duct 101, for guiding the hot air flow in the inner cavity of the handle 200 into the air supply duct 101 to form a spiral hot air flow. The air flow entering the hair dryer from the first air inlet 210 sequentially passes through the inner cavity of the handle 200, the air inlet duct 102 and the air supply duct 101, and is finally guided out from the air outlet 110 of the air supply duct 101 at the end of the blowing cylinder 100.

[0053] In some embodiments, as shown in Figure 5 , an included angle is formed between the central axis of the air inlet duct 102 and the central axis of the air supply duct 101, and the included angle θ is less than 90°.

[0054] In the above embodiments, the central axis of the air inlet duct 102 and the central axis of the air supply duct 101 are connected at an acute angle, which is beneficial to the high-speed hot air flow generated by the hot air device 300 to rush into the air inlet duct 102 and form a force towards the air outlet 110 at the end of the blowing cylinder 100, thereby forming a spiral hot air flow, improving the air outlet speed and air outlet volume of the hair dryer, and further improving the blowing efficiency.

[0055] Specifically, the included angle θ between the central axis of the air inlet duct 102 and the central axis of the air supply duct 101 satisfies: 0°<θ<90°; as a preferred embodiment, the included angle θ between the central axis of the air inlet duct 102 and the central axis of the air supply duct 101 is 60°.

[0056] In some embodiments, as shown in Figure 2 , Figure 3 , the side of the blowing cylinder 100 is provided with an air flow guide inlet 130, and an interface structure 140 is fixedly arranged on the part of the blowing cylinder 100 outside the periphery of the air flow guide inlet 130, and the interface structure 140 is fixedly connected with the handle 200; the air inlet duct 102 is fixedly arranged in the interface structure 140, the air inlet end 1022 of the air inlet duct 102 is communicated with the inner cavity of the handle 200, and the air outlet end 1021 of the air inlet duct 102 is communicated with the air flow guide inlet 130.

[0057] In the above embodiments, by arranging the interface structure 140 on the side of the blowing cylinder 100, the blowing cylinder 100 and the handle 200 are conveniently connected, and by arranging the air inlet duct 102 in the interface structure 140, the air inlet duct 102 can be hidden, and the overall structure of the hair dryer is improved in appearance.

[0058] Specifically, the interface structure 140 is integrally formed on the side of the blowing cylinder 100.

[0059] In some embodiments, as shown in Figure 2 ,Figure 3 As shown, the blow gun 100 is configured as a double-layer structure, the blow gun 100 has an inner layer barrel 150 and an outer layer barrel 160, and a cavity is formed between the inner layer barrel 150 and the outer layer barrel 160; the air flow inlet 130 penetrates the outer layer barrel 160 and the inner layer barrel 150, and the air outlet end 1021 of the air inlet duct 102 penetrates the outer layer barrel 160 and is connected to the air flow inlet 130 of the inner layer barrel 150.

[0060] In the above embodiment, the blow gun 100 with a double-layer structure can play a role of preventing scalding and heat insulation, and reduce the surface temperature of the blow gun 100. At the same time, the double-layer structure can also make the structure of the blow gun 100 more firm and reliable. Moreover, the air outlet end 1021 of the air inlet duct 102 is directly inserted into the air flow inlet 130 of the inner layer barrel 150 through the outer layer barrel 160, which can effectively prevent the hot air flow from entering the cavity formed between the inner layer barrel 150 and the outer layer barrel 160.

[0061] As an alternative embodiment, the blow gun 100 can be configured as a three-layer, four-layer, five-layer or multi-layer structure.

[0062] In some embodiments, as shown in Figure 11 , Figure 12 As shown, at least one end of the blow gun 100 is provided with an opening 170 communicating with the cavity, and the blower 320 further includes an end cover 500 which is detachably connected to the opening 170.

[0063] In the above embodiment, at least one end of the blow gun 100 is provided with an opening 170 communicating with the cavity, which facilitates the blow gun 100 with a double-layer structure to be molded as a whole; the end cover 500 is detachably connected to the opening 170, which not only plays a decorative role but also prevents dirt from entering the cavity formed between the inner layer barrel 150 and the outer layer barrel 160 through the opening 170.

[0064] Specifically, the opening 170 at the end of the blow gun 100 is arranged outside the air outlet 110 and is formed by the end of the cavity formed between the inner layer barrel 150 and the outer layer barrel 160. The inner wall of the outer layer barrel 160 is circumferentially provided with an inner thread 180, and the outer wall of the end cover 500 is circumferentially provided with an outer thread 510, and the end cover 500 is detachably connected to the opening 170 through threaded connection.

[0065] In some embodiments, as shown in Figure 3 , Figure 6 , Figure 7 , Figure 8 As shown, the cross-sectional area of the air outlet end 1021 of the air inlet duct 102 is smaller than the cross-sectional area of the air inlet end 1022 of the air inlet duct 102.

[0066] In the above embodiment, the cross-sectional area of the air outlet end 1021 of the air inlet duct 102 is designed to be smaller than the cross-sectional area of the air inlet end 1022 of the air inlet duct 102. By using the principle that the flow rate of fluid flowing through a narrow channel is accelerated, the hot air flow has a higher initial wind speed when it enters the air supply duct 101 after passing through the air inlet duct 102, thereby further improving the air outlet wind speed and air outlet volume of the hair dryer.

[0067] Specifically, the air outlet end 1021 of the air inlet duct 102 is the connection between the air inlet duct 102 and the inner wall of the blowing cylinder 100 where the air supply duct 101 is located, and the air inlet end 1022 of the air inlet duct 102 is the connection between the air inlet duct 102 and the inner cavity of the handle 200.

[0068] In some embodiments, as shown in Figure 3 , Figure 8 The cross-sectional area of the air inlet duct 102 gradually decreases from the air inlet end 1022 to the air outlet end 1021.

[0069] In the above embodiment, the cross-sectional area of the air inlet duct 102 is designed to gradually decrease from the air inlet end 1022 to the air outlet end 1021, which avoids the hot air flow flowing in the air inlet duct 102 from being disturbed, thereby improving the smoothness of the hot air flow flowing in the air inlet duct 102.

[0070] Specifically, the air inlet duct 102 is arranged in a blunt conical shape. As an alternative embodiment, the air inlet duct 102 is arranged in a stepped manner, and the cross-sectional area of the side wall of each layer of the air inlet duct 102 decreases in turn.

[0071] In some embodiments, as shown in Figure 9 The inner wall of the blowing cylinder 100 includes a first inner wall section 103 located opposite the air inlet duct 102, and a second inner wall section 104 located between the air inlet duct 102 and the first inner wall section 103, and the center axis of the air inlet duct 102 is arranged to be offset to the second inner wall section 104.

[0072] In the above embodiment, the center axis of the air inlet duct 102 is arranged to be offset to the second inner wall section 104 of the blowing cylinder 100, so that the air inlet duct 102 and the air supply duct 101 form an offset butt joint, and the hot air flow in the air inlet duct 102 can enter and flow along a position close to the second inner wall section 104 of the blowing cylinder 100, avoiding the hot air flow directly impacting the first inner wall section 103 opposite the blowing cylinder 100 to cause energy loss, thereby reducing the flow loss of the air outlet volume, and further improving the air outlet wind speed and air outlet volume of the hair dryer.

[0073] Specifically, the blowpipe 100 is configured in a cylindrical shape, and the cross section of the blowpipe 100 is circular. The first inner wall segment 103 of the blowpipe 100 is a side wall of the blowpipe 100 corresponding to a chord of the same width as the air inlet end 1022 of the air inlet duct 102 on the opposite side of the air outlet end 1021 of the air inlet duct 102. Figure 9 The second inner wall segment 104 of the blowpipe 100 is a side wall of the blowpipe 100 corresponding to a portion between the air outlet end 1021 of the air inlet duct 102 and the first inner wall segment 103.

[0074] In some embodiments, as shown in FIG. 1, the center axis of the air inlet duct 102 is tangent to the second inner wall segment 104. Figure 9

[0075] In the above embodiments, the center axis of the air inlet duct 102 is tangent to the second inner wall segment 104, so that the air inlet duct 102 and the air supply duct 101 form a tangential joint, and the hot air flow in the air inlet duct 102 can enter and flow along the second inner wall segment 104 of the blowpipe 100 in a tangential direction, avoiding the hot air flow directly colliding with the first inner wall segment 103 on the opposite side of the blowpipe 100 to cause energy loss, improving the smoothness of the air inlet of the air inlet duct 102 to the air supply duct 101, and further improving the air outlet speed and air outlet volume of the hair dryer.

[0076] Specifically, since the air inlet duct 102 has a certain width, when the center axis of the air inlet duct 102 is tangent to the second inner wall segment 104, Figure 9 In the transverse sectional view of the blowpipe 100, the upper and lower air duct edges in the air inlet duct 102 do not need to be tangent to the second inner wall segment 104, and only need to ensure that the center axis of the air inlet duct 102 is tangent to the second inner wall segment 104, so that the hot air flow in the air inlet duct 102 can enter and flow along the second inner wall segment 104 of the blowpipe 100 in a tangential direction. As a preferred embodiment, the upper air duct edge in the air inlet duct 102 is tangent to the second inner wall segment 104, further improving the smoothness of the air inlet of the air inlet duct 102 to the air supply duct 101.

[0077] In some embodiments, as shown in FIG. 1, the air outlet end 1021 of the air inlet duct 102 is closer to the second inner wall segment 104 relative to the center axis of the air supply duct 101. Figure 9

[0078] In the above embodiments, the air outlet end 1021 of the air inlet duct 102 is closer to the second inner wall segment 104 relative to the center axis of the blowpipe 100, which is conducive to the spiral flow of the hot air flow along the inner wall of the blowpipe 100, reducing the flow rate loss of the hot air flow.

[0079] ​​Specifically, the air outlet end 1021 of the air inlet duct 102 is close to the second inner wall segment 104 relative to the central axis of the air supply duct 101, so that Figure 9 In the transverse sectional view of the blow gun 100, the lower air duct edge line in the air inlet duct 102 is close to the second inner wall segment 104 relative to the central axis M of the air inlet duct 102, which ensures the spiral flow of the hot air along the inner wall of the blow gun 100.

[0080] In some embodiments, as shown in Figure 2 , Figure 4 , Figure 10 The second end of the blow gun 100 is provided with a second air inlet 120 which communicates with the air supply duct 101.

[0081] In the above-mentioned embodiments, the air inlet duct 102 and the air supply duct 101 are close to the position where the pressure decreases due to the increase of air flow speed, and the second air inlet 120 is used as an auxiliary air inlet to improve the air outlet volume of the hair dryer by using the pressure difference.

[0082] Specifically, the cross-sectional area of the air outlet end 1021 of the air inlet duct 102 is designed to be smaller than that of the air inlet end 1022 of the air inlet duct 102, so that the hot air has a higher initial wind speed when it enters the air supply duct 101 after passing through the air inlet duct 102; when the high-speed hot air enters the air supply duct 101 along the air inlet duct 102, the air inlet duct 102 and the air supply duct 101 are close to the position where the pressure decreases due to the increase of air flow speed, thereby forming a pressure difference with the external air flow near the second air inlet 120 and the air flow in the first segment L1 of the blow gun 100. The two air flows will enter the air supply duct 101 of the blow gun 100 under the action of the pressure difference, and will be guided to the air outlet 110 together with the air flow entering the first air inlet 210 and guided out by the air supply duct 101, thereby improving the air outlet volume of the hair dryer to further improve the blowing efficiency. And because of the existence of the pressure difference, the air flow guided out of the air supply duct 101 to the air inlet duct 102 cannot escape from the second air inlet 120 at the upper end, but can only be guided out from the air outlet 110 at the lower end, ensuring effective auxiliary air inlet.

[0083] In some embodiments, as shown in Figure 10 The blow gun 100 includes a first segment L1 between the second air inlet 120 and the connection position, and a second segment L2 between the air outlet 110 and the connection position, and the length of the first segment L1 is smaller than that of the second segment L2.

[0084] In the above embodiment, the length of the first section L1 of the blowpipe 100 is designed to be less than the length of the second section L2, so that the hot air flow can flow in the second section L2 of the longer blowpipe 100, ensuring the guide path of the hot air flow, thereby further improving the gentleness of the hot air flow discharged by the air outlet 110 at the end of the blowpipe 100.

[0085] In this embodiment, the overall structure of the blowpipe 100 can be designed as a blunt conical structure, i.e. the cross-sectional area of the air supply duct 101 at the position of the air outlet 110 is less than the cross-sectional area of the air supply duct 101 at the position of the first air inlet 210, which is beneficial to increasing the flow rate of the hot air flow at the air outlet 110 by utilizing the principle that the flow rate of fluid flowing through a narrow channel is accelerated.

[0086] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the present application.

Claims

1. A hair dryer, characterized in that, include: A blower (100) has an inner cavity forming an air supply duct (101), and the first end of the blower (100) is provided with an air outlet (110) that communicates with the air supply duct (101). The handle (200) is connected at one end to the side of the blower (100) and at the other end is provided with a first air inlet (210). The inner cavity of the handle (200) is connected to the first air inlet (210) and the air supply duct (101) respectively. A hot air device (300) is provided in the handle (200) for converting the airflow entering from the first air inlet (210) into hot air and then delivering the hot air to the air supply duct (101) to form a hot airflow in the air supply duct (101).

2. The hair dryer according to claim 1, characterized in that, The hot air device (300) includes: A heating element (310) is disposed within the handle (200); A fan (320) is disposed inside the handle (200). The fan (320) is used to draw air from the external environment into the handle (200) through the first air inlet (210) and guide it to the heating element (310), and deliver the hot air heated by the heating element (310) into the air supply duct (101).

3. The hair dryer according to claim 2, characterized in that, The heating element (310) is located at one end near the blower (100), and the fan (320) is located between the first air inlet (210) and the heating element (310).

4. The hair dryer according to claim 3, characterized in that, The handle (200) is also provided with a control board (400), which is located between the fan (320) and the heating element (310) and is electrically connected to the fan (320) and the heating element (310) respectively.

5. The hair dryer according to claim 1, characterized in that, The handle (200) has a grip section and an air inlet section. The grip section is located near the blower (100), and the air inlet section is located at the end of the grip section away from the blower (100). The first air inlet (210) is constructed to surround a plurality of air inlet holes disposed around the outer periphery of the air inlet section.

6. The hair dryer according to any one of claims 1-5, characterized in that, The side of the blower (100) is provided with an air inlet duct (102) that communicates with the air supply duct (101). One end of the handle (200) is connected to the air inlet duct (102), and the inner cavity of the handle (200) communicates with the air inlet duct (102). The hot air device (300) is used to transport the hot air through the air inlet duct (102) to the air outlet duct (101) to form a spiral hot air flow in the air outlet duct (101).

7. The hair dryer according to claim 6, characterized in that, The angle between the central axis of the air inlet duct (102) and the central axis of the air outlet duct (101) is θ, where θ is less than 90°.

8. The hair dryer according to claim 6, characterized in that, The side of the blower (100) is provided with an airflow inlet (130), and an interface structure (140) is fixedly provided on the part of the blower (100) located on the outer periphery of the airflow inlet (130). The interface structure (140) is fixedly connected to the handle (200). The air inlet duct (102) is fixedly installed inside the interface structure (140). The air inlet end (1022) of the air inlet duct (102) is connected to the inner cavity of the handle (200), and the air outlet end (1021) of the air inlet duct (102) is connected to the airflow inlet (130).

9. The hair dryer according to claim 8, characterized in that, The blower (100) is constructed as a double-layer structure, the blower (100) having an inner cylinder (150) and an outer cylinder (160), and a cavity is formed between the inner cylinder (150) and the outer cylinder (160); The airflow inlet (130) passes through the outer cylinder (160) and the inner cylinder (150), and the air outlet (1021) of the air inlet duct (102) passes through the outer cylinder (160) and is connected to the airflow inlet (130) of the inner cylinder (150).

10. The hair dryer according to claim 9, characterized in that, The blower (100) has an opening (170) at at least one end communicating with the cavity, and the blower (320) also includes an end cap (500) which is detachably connected to the opening (170).

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