Machine head assembly and air blowing equipment

Abstract

The utility model discloses a machine head assembly and blowing equipment, and relates to the technical field of blowing equipment.The machine head assembly comprises a blowing module and a heating assembly, an air outlet channel is formed in the blowing module, the heating assembly comprises a heating piece and a heat conduction fin structure, and the heat conduction fin structure is of an integrally-formed structure; the heat conduction fin structure extends in the circumferential direction of the heating piece and is in heat conduction connection with the heating piece, the heating piece and the heat conduction fin structure are arranged in the air outlet channel and arranged on an air outlet path of the air blowing module, the heating piece comprises a power connection piece, a heating wire, an insulating heat conduction layer, a heat conduction outer layer and an isolation piece, and the insulating heat conduction layer wraps the heating wire; the insulating heat-conducting layer is wrapped by the heat-conducting outer layer, the power connection piece is connected to the two ends of the heating wire and penetrates through the heat-conducting outer layer to extend into the insulating heat-conducting layer, and the isolation piece wraps the outer wall of the power connection piece and penetrates through the heat-conducting outer layer to extend into the insulating heat-conducting layer. The heating wire is isolated from air, aging or inflammable matter contact is prevented, heat dissipation is accelerated through the heat conduction fin structure, and the safety risk is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to hair dryer technical field especially relates to a head assembly and hair dryer. BACKGROUND

[0002] In related art, the hair dryer with hot air function generally has a technical defect: the core component of the heating assembly of these hair dryers mainly adopts heating wire, and the heating wire is usually directly exposed to air, which has a great safety risk, and some heating wires are made of special materials such as PTC to prevent overload, but the cost of the heating wire made of these special materials is relatively high. SUMMARY

[0003] The utility model discloses a head assembly and hair dryer, which aims to reduce the safety risk of the heating assembly.

[0004] To achieve the above object, the head assembly provided by the utility model comprises a hair blowing module and a heating assembly, an air outlet channel is formed in the hair blowing module, the heating assembly comprises a heating element and a heat conduction fin structure, the heat conduction fin structure is an integral forming structure, the heat conduction fin structure is arranged in the circumferential direction of the heating element and is in heat conduction connection with the heating element, the heating element and the heat conduction fin structure are arranged in the air outlet channel and on the air outlet path of the hair blowing module, the heating element comprises an electricity connecting piece, a heating wire, an insulating heat conduction layer and a heat conduction outer layer, the heating wire is wrapped by the insulating heat conduction layer, the insulating heat conduction layer is wrapped by the heat conduction outer layer, and the electricity connecting piece is connected to both ends of the heating wire and extends into the insulating heat conduction layer through the heat conduction outer layer.

[0005] In an embodiment, the hair blowing module comprises a shell, a mounting structure and a fan assembly, the air outlet channel is formed in the shell, the shell is provided with an air outlet hole communicating with the air outlet channel, the mounting structure is arranged in the air outlet channel, the fan assembly is connected to one end of the mounting structure, the heating element and the heat conduction fin structure are connected to the other end of the mounting structure, and the heat conduction fin structure is arranged corresponding to the air outlet hole.

[0006] In an embodiment, the shell comprises a rear shell and a front cover, the air outlet channel is formed in the rear shell, the front cover is connected to one end of the rear shell and covers the heating assembly, and the front cover is provided with the air outlet hole.

[0007] In an embodiment, a heat insulation pad is arranged between the heating assembly and the mounting structure; and / or, the front cover comprises an outer ring, an inner ring and a rib connecting the inner ring and the outer ring, the inner ring is spaced apart from the outer ring to form the air outlet hole, and the inner ring is connected to the mounting structure; and / or, the shell further comprises an air inlet cover body connected to an end of the rear shell away from the front cover and in communication with the air outlet channel, a circumferential air inlet is arranged on the air inlet cover body, and a filter is arranged in the air inlet cover body.

[0008] In an embodiment, the fan assembly comprises a fan body and a fan blade, the fan blade comprises an inner hub, an outer hub, an inner blade and an outer blade, the inner hub is connected to the fan body, the outer hub is coaxially arranged with the inner hub and is sleeved on the outer periphery of the inner hub, an air inlet flow channel is formed between the outer hub and the inner hub, the outer blade is connected to the outer periphery of the outer hub, and the inner blade is arranged in the air inlet flow channel and connected to the outer hub and the inner hub.

[0009] In an embodiment, the heating assembly further comprises a temperature control switch, the temperature control switch is electrically connected to the heating wire; and / or, the heating element further comprises an isolation element, the isolation element wraps the outer wall of the power connection element and extends into the insulating heat conduction layer through the heat conduction outer layer.

[0010] In an embodiment, the heat conduction fin structure is detachably connected to the heating element; and / or, the heat conduction fin structure comprises a plurality of fin bodies; a plurality of ribs are arranged on the fin bodies in a spaced apart manner, and the ribs extend to and are arranged on the adjacent other fin bodies; and / or, the heating assembly further comprises a first temperature measuring element, the first temperature measuring element is in heat conduction connection with the heating element or the heat conduction fin structure, and is used to monitor the temperature of the heating assembly; and / or, the heating assembly further comprises a second temperature measuring element, the second temperature measuring element is used to monitor the air outlet temperature of the handpiece assembly.

[0011] In an embodiment, the heating element is arranged in a ring shape, and the heat conduction fin structure is sleeved on the outer periphery of the heating element; or, the heat conduction fin structure comprises a seat plate and a plurality of fin bodies arranged in a spaced apart manner along the periphery of the seat plate, and the heating element is connected to the seat plate; or, the heating element is arranged in a straight line shape, the heat conduction fin structure is connected to the side wall of the heating element and is arranged in an extending manner along the length direction of the heating element.

[0012] In an embodiment, the heating element is detachably connected to the handpiece assembly; or, the heat conduction fin structure is detachably connected to the handpiece assembly; or, the heating assembly further comprises a heat conduction fixing element, the heat conduction fixing element is detachably connected to the handpiece assembly, and the heat conduction fin structure and the heating element are respectively connected to opposite sides of the heat conduction fixing element.

[0013] This utility model also proposes a blower device, which includes a head assembly as described in any of the above embodiments.

[0014] The head assembly proposed in this utility model includes a blower module and a heating component. The blower module has an air outlet channel. The heating component includes a heating element and a heat-conducting fin structure. The heat-conducting fin structure is an integrally formed structure. The heat-conducting fin structure extends circumferentially along the heating element and is thermally connected to the heating element. The heating element and the heat-conducting fin structure are located in the air outlet channel and on the air outlet path of the blower module. The heating element includes a connecting element, a heating wire, an insulating heat-conducting layer, a heat-conducting outer layer, and an insulating element. The insulating heat-conducting layer wraps the heating wire, and the heat-conducting outer layer wraps the insulating heat-conducting layer. The connecting element is connected to both ends of the heating wire and extends through the heat-conducting outer layer into the insulating heat-conducting layer. The insulating element wraps the outer wall of the connecting element and extends through the heat-conducting outer layer into the insulating heat-conducting layer. This head assembly features a heat-conducting outer layer that wraps around the heating wire, and the ends of the outer layer are sealed with an insulating component. This prevents the heating wire from directly contacting the air, reducing the risk of fire caused by aging of the heating wire or direct contact with flammable materials. The inner heat-conducting tube is filled with an insulating heat-conducting layer, reducing the risk of short circuits and leakage of the heating wire. By incorporating a heat-conducting fin structure that is thermally connected to the heating element, the heat exchange efficiency between the heating element and the incoming air is improved, preventing heat accumulation and overheating of the heating element. Therefore, the head assembly proposed in this invention has the beneficial effect of reducing the safety risks of heating components. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1 An exploded view of an embodiment of the head assembly provided by this utility model;

[0017] Figure 2 for Figure 1 A cross-sectional view of an embodiment of the mid-engine nose assembly;

[0018] Figure 3 Exploded view of yet another embodiment of the head assembly provided by this utility model;

[0019] Figure 4 for Figure 1 Schematic diagram of the heating element in the middle;

[0020] Figure 5 for Figure 4 Schematic diagram of the heating element;

[0021] Figure 6 for Figure 5 a cross-sectional view of the heating element;

[0022] Figure 7 for Figure 4 a structural schematic view of the heat-conducting fin structure;

[0023] Figure 8 for Figure 3 a structural schematic view of the heat-conducting fin structure;

[0024] Figure 9 a structural schematic view of another embodiment of the heating assembly provided by the present application;

[0025] Figure 10 for Figure 1 a structural schematic view of the front cover;

[0026] Figure 11 for Figure 1 a structural schematic view of the fan blade;

[0027] Figure 12 a structural schematic view of still another embodiment of the head assembly provided by the present application;

[0028] Figure 13 for Figure 12 a cross-sectional view of the head assembly.

[0029] BRIEF DESCRIPTION OF THE DRAWINGS

[0030] 100, head assembly;

[0031] 1, blowing module; 1a, air outlet channel; 11, shell; 11a, air outlet hole; 111, rear shell; 112, front cover; 1121, outer ring; 1122, inner ring; 1123, rib; 113, air inlet cover body; 113a, air inlet; 114, filter element; 12, mounting structure; 121, heat insulation pad; 13, fan assembly; 131, fan body; 132, fan blade; 1321, inner hub; 1322, outer hub; 1323, inner blade; 1324, outer blade;

[0032] 2, heating assembly; 21, heating element; 211, power connection element; 212, heating wire; 213, insulating heat-conducting layer; 214, heat-conducting outer layer; 215, isolation element; 22, heat-conducting fin structure; 221, seat plate; 222, fin body; 2221, rib; 23, heat-conducting fixing element; 24, temperature control switch.

[0033] The realization, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present application.

[0035] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture, and if the specific posture changes, the directional indications also change accordingly.

[0036] In addition, if the embodiments of the present application involve descriptions of "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one of the features. In addition, "and / or" or "and / or" appearing throughout the text means that the three parallel schemes include A scheme, or B scheme, or A and B schemes are satisfied at the same time. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection required by the present application.

[0037] The utility model provides a kind of head assembly 100, it can be applied to but not limited to hair dryer, heater and so on hair blowing equipment.

[0038] Please refer to Figure 1 、 Figure 4 、 Figure 5 And Figure 6In an embodiment of the utility model, this head assembly 100 includes blowing module 1 and heating assembly 2, the blowing module 1 is formed with air outlet channel 1a inside, the heating assembly 2 includes heating element 21 and heat conduction fin structure 22, heat conduction fin structure 22 is integrally formed structure, heat conduction fin structure 22 is along the circumferential extension of heating element 21 Setting is connected with heating element 21 heat conduction, heating element 21 and heat conduction fin structure 22 are located in air outlet channel 1a, and are located on the air outlet path of blowing module 1, heating element 21 includes electricity connection piece 211, heating wire 212, insulating heat conduction layer 213 and heat conduction outer layer 214, the insulating heat conduction layer 213 is wrapped heating wire 212, heat conduction outer layer 214 is wrapped insulating heat conduction layer 213, electricity connection piece 211 is connected to both ends of heating wire 212 and extends into insulating heat conduction layer 213.

[0039] In the embodiment, head assembly 100 includes blowing module 1 and heating assembly 2. Blowing module 1 is composed of shell 11, mounting structure 12 and fan assembly 13, air outlet channel 1a is formed in shell 11, and air outlet hole 11a is arranged. Shell 11 can adopt cylindrical shape, and the holes at both ends of the cylinder can be used as air inlet 113a and air outlet hole 11a. Linear air outlet channel 1a can be arranged in the cylindrical shell 11 accordingly, avoiding the turning angle of the blowing path, improving the smoothness of gas flow, and reducing the pressure of fan assembly 13. A strip-shaped air inlet 113a and air outlet hole 11a can also be re-opened on the side of the cylinder to be applied to horizontal or vertical heating equipment. The strip-shaped air outlet enables users to feel that the range of wind force is expanded, improving the practicability of head assembly 100.

[0040] Fan assembly 13 is fixed in shell 11 through mounting structure 12, and heating assembly 2 is located in air outlet channel 1a, just on the air outlet path. Heat conduction fin structure 22 of heating assembly 2 is arranged corresponding to air outlet hole 11a, so that hot air can leave air outlet channel 1a in the first time, reducing heat loss. Moreover, heat conduction fin structure 22 only needs to be arranged corresponding to air outlet hole 11a, which can reduce the volume of heat conduction fin structure 22, reduce wind resistance, make the airflow in air outlet channel 1a more smooth, and reduce the material cost of heat conduction fin structure 22, which is beneficial to reduce redundant design and reduce structural cost.

[0041] It should be noted that blowing module 1 can also adopt a blowing structure without fan blade 132, that is, the fan blade 132 is designed in a hidden manner, and the fan blade 132 and the fan can not be directly arranged in the air outlet channel 1a. At this time, heating assembly 2 can be arranged at any position of air outlet channel 1a without considering that the heat emitted by heating assembly 2 will adversely affect the fan.

[0042] The electrically conductive member 211 is made of electrically conductive material and is used for welding or plugging with the power line, such as steel material and nickel plating treatment to ensure that the electrically conductive member 211 has certain strength and corrosion resistance. The heating wire 212 can be made of metal material with good electric heating performance, such as iron-chromium-aluminum alloy or nickel-chromium alloy. The heat-conducting outer layer 214 can be made of metal material with good heat conductivity and formed into a tubular structure, such as copper pipe or aluminum pipe. The heating wire 212 is accommodated in the tubular structure, and the tubular structure is filled with insulating material with good heat conductivity to prevent electric leakage, such as magnesium oxide or aluminum oxide. By wrapping the insulating heat-conducting layer 213 outside the heating wire 212, the risk of electric leakage of the heating wire is reduced, and the heat-conducting outer layer 214 is arranged outside the insulating heat-conducting layer 213, the insulating heat-conducting material of the insulating heat-conducting layer 213 is accommodated, and the heating wire 212 is protected to prevent accidental damage to the heating wire 212. The heat-conducting outer layer 214 wraps the circumferential side of the insulating heat-conducting layer 213, and the heat-conducting outer layer 214 can be provided with a flange at the end to wrap the two end faces of the insulating heat-conducting layer 213, but does not contact the electrically conductive member 211. And the insulating heat-conducting layer 213 separates the heating wire 212 from the air to prevent the heating wire 212 from oxidizing, further improving the service life of the heating wire 212.

[0043] The heat-conducting fin structure 22 has a plurality of fin bodies 222 arranged at intervals. The plurality of fin bodies 222 arranged at intervals can be directly arranged on the heating element 21, or the plurality of fin bodies 222 arranged at intervals can be connected to one side of the connecting structure and connected to the heating element 21 through the connecting structure. It should be noted that the connecting structure can be provided in the shape of a strip, a circle, a ring, a straight line, etc., and the plurality of fins arranged at intervals can be arranged in parallel or radially on the connecting structure. When the heating element 21 adopts a ring shape, the plurality of fins arranged at intervals are arranged along the heating element 21 and distributed in a ring shape. When the heating element 21 adopts a straight line shape, the plurality of fins arranged at intervals are arranged along the heating element 21 and distributed in a straight line shape. Other shapes are similar, which can make the heating element 21 and the heat-conducting fin structure 22 better fit to facilitate heat transfer and installation. The connecting structure can be connected to the heating element 21 by fixed connection or detachable connection. The heat-conducting fin structure 22 of the embodiment is an integral structure. Please refer to Figure 4For example, the heat-conducting fin structure 22 has a strip-shaped heat-conducting plate, and a plurality of fin bodies 222 are arranged on one side of the heat-conducting plate. The fin body structure 222 is integrally formed with the heat-conducting plate. In this way, the connection strength between the fin body 222 and the heat-conducting plate is strengthened, and there is no gap between the fin body 222 and the heat-conducting plate due to the integrally formed structure, thereby reducing the loss in the heat conduction process and improving the heat conduction efficiency. It should be noted that the above is only a demonstrative example of the integrally formed structure through the annular heat-conducting fin structure 22, and should not be regarded as a limitation on the technical solutions of the present application.

[0044] The heating assembly 2 is arranged in the air outlet channel 1a of the head assembly 100 and on the air outlet path of the air outlet channel 1a. In the embodiment, the heating assembly 2 is in heat-conducting connection with the heating element 21 and the heat-conducting fin structure 22, the heat-conducting fin structure 22 improves the heat conduction speed of the heating element 21 and increases the heat exchange area between the incoming air and the heating assembly 2, thereby improving the heat exchange efficiency between the heating element 21 and the incoming air, so that the head assembly 100 has low energy consumption and can quickly reach the required temperature of the user.

[0045] In the embodiment, the heating wire is wrapped by the heat-conducting outer layer, and the two ends of the heat-conducting outer layer are sealed by the isolation member, so that the heating wire is not directly in contact with the air, thereby reducing the risk of fire caused by aging or direct contact of the heating wire with flammable materials. The heat-conducting outer layer is filled with the insulating heat-conducting layer, thereby reducing the risk of short circuit and electric leakage of the heating wire. The heat-conducting fin structure in heat-conducting connection with the heating element improves the heat exchange efficiency between the heating element and the incoming air, prevents heat accumulation, and prevents overheating of the heating element. Therefore, the head assembly has the beneficial effect of reducing the safety risk of the heating assembly.

[0046] Further, please refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 13 In an embodiment of the present application, the hair dryer module 1 comprises a housing 11, a mounting structure 12, and a fan assembly 13. The housing 11 has the air outlet channel 1a formed therein. The housing 11 is provided with an air outlet hole 11a communicating with the air outlet channel 1a. The mounting structure 12 is arranged in the air outlet channel 1a. The fan assembly 13 is connected to one end of the mounting structure 12. The heating element 21 and the heat-conducting fin structure 22 are connected to the other end of the mounting structure 12. The heat-conducting fin structure 22 is arranged corresponding to the air outlet hole 11a.

[0047] In the embodiment, the air outlet channel 1a is formed in the shell 11, the mounting structure 12 is connected with the shell 11 and located in the air outlet channel 1a, and is used for providing a mounting base for the fan assembly 13 and the heating assembly 2. The mounting structure 12 is in a bowl shape and gradually expands along a direction close to the air outlet hole 11a, an annular gap is formed between the mounting structure 12 and the inner wall of the air outlet channel 1a for airflow to pass through, and since the mounting structure 12 is in the bowl shape and gradually expands along the direction close to the air outlet hole 11a, that is, the gap between the mounting structure 12 and the inner wall of the air outlet channel 1a gradually decreases, the effect of air gathering is achieved, the flow rate of the airflow after passing through the mounting structure 12 is increased, the wind power is improved, and therefore certain assistance can be provided to overcome the wind resistance of the heat conduction fin structure 22.

[0048] The fan assembly 13 is mounted at the center of the mounting structure 12, specifically, the fan blade 132 in the mounting assembly is mounted at the center of one end of the mounting structure 12 away from the air outlet hole 11a, and the heating assembly 2 is mounted at one end of the mounting assembly facing the air outlet hole 11a, so that the airflow heated can directly pass through the air outlet hole 11a to leave the air outlet channel 1a without passing through the fan assembly 13, the fan assembly 13 is prevented from being overheated, and the heat generated by the fan assembly 13 itself can also be taken out.

[0049] Further, referring to Figures 1 to 3 In the embodiment, the shell 11 comprises a rear shell 111 and a front cover 112, the air outlet channel 1a is formed in the rear shell 111, the front cover 112 is connected to one end of the rear shell 111 and covers the heating assembly 2, and the front cover 112 is provided with the air outlet hole 11a.

[0050] In the embodiment, the front cover 112 is detachably connected with the rear shell 111, for example, the front cover 112 is connected with the rear shell 111 through clamping grooves and clamping protrusions, for example, a thread is arranged on the front cover 112 and a thread groove is arranged on the side wall of the air outlet channel 1a of the rear shell 111, so that the front cover 112 can be screwed into the rear shell 111, and for example, screw holes are directly arranged on the front cover 112 and the rear shell 111, and the front cover 112 and the rear shell 111 are connected through bolts. The detachable connection between the front cover 112 and the rear shell 111 facilitates dust cleaning inside the shell 11, prevents dust accumulation from causing the heat dissipation effect to decrease, and also facilitates replacement of the damaged heating element 21 without the need for replacement of the whole machine and reduction of the maintenance difficulty. The front cover 112 is connected to one end of the rear shell 111 and covers the heating assembly 2, so that the heating assembly 2 can be protected from damage caused by accidental impact or overturning.

[0051] Further, referring to Figure 1 and Figure 10In an embodiment of the present application, the heat generating component 2 and the mounting structure 12 are provided with a heat insulation pad 121; and / or, the front cover 112 comprises an outer ring 1121, an inner ring 1122 and a rib 1123 connecting the inner ring 1122 and the outer ring 1121, the inner ring 1122 and the outer ring 1121 are spaced to form the air outlet hole 11a, and the inner ring 1122 is connected with the mounting structure 12; and / or, the shell 11 further comprises an air inlet cover 113, which is connected to one end of the rear shell 111 away from the front cover 112 and communicates with the air outlet channel 1a, and the air inlet cover 113 is provided with an air inlet 113a around the circumference, and the air inlet cover 113 is provided with a filter 114.

[0052] In the embodiment, the heat generating component 2 and the mounting structure 12 are provided with a heat insulation pad 121, which is made of low thermal conductivity material such as ceramic to prevent the mounting structure 12 from being deformed by heat. The front cover 112 comprises an outer ring 1121, an inner ring 1122 and a rib 1123 connecting the inner ring 1122 and the outer ring 1121, and the inner ring 1122 and the outer ring 1121 are spaced to form the air outlet hole 11a, i.e. the air outlet hole 11a is annularly distributed, and when the airflow is blown out from the annularly distributed air outlet hole 11a, it will be diffused, part of which is diffused to the center of the annulus, and part of which is diffused to the outer periphery of the annulus, so that the air outlet area is expanded, and because the area of the air outlet hole 11a is relatively reduced compared with the area of the air outlet channel 1a, the airflow velocity is increased, and the wind power is increased. The inner ring 1122 covers the heat generating component 2 to protect the heat generating component 2. The inner ring 1122 is connected with the mounting structure 12, and the fan assembly 13 and the heat generating component 2 are both arranged in the mounting structure 12, so that the fan assembly 13 and the heat generating component 2 can be taken out together by opening the front cover 112, which is convenient for maintenance and dust removal. The shell 11 further comprises an air inlet cover 113, which is connected to one end of the rear shell 111 away from the front cover 112 and communicates with the air outlet channel 1a, and the air inlet cover 113 is provided with an air inlet 113a around the circumference, and the air inlet 113a is provided as a plurality of small holes, which can prevent sundries from being rolled into the equipment to damage the fan under the condition of the same air inlet area. The air inlet cover 113 is provided with a filter 114, which can be a filter screen or filter cotton provided with a plurality of slits, and the air inlet cover and the rear shell 111 are detachably connected, so that when the dust accumulated on the filter 114 is too much, the air inlet cover can be separately disassembled to clean or replace the filter 114 without the need to disassemble the whole machine, thereby improving the convenience of equipment maintenance.

[0053] Further, please refer to Figure 1 , Figure 2 and Figure 11In an embodiment of the present application, the fan assembly 13 comprises a fan body 131 and a fan blade 132, the fan blade 132 comprises an inner hub 1321, an outer hub 1322, an inner blade 1323 and an outer blade 1324, the inner hub 1321 is connected to the fan body 131, the outer hub 1322 is coaxially arranged with the inner hub 1321 and is sleeved on the outer periphery of the inner hub 1321, an air inlet flow channel is formed between the outer hub 1322 and the inner hub 1321, the outer blade 1324 is connected to the outer periphery of the outer hub 1322, and the inner blade 1323 is arranged in the air inlet flow channel and connected to the outer hub 1322 and the inner hub 1321.

[0054] In the embodiment, the outer blade 1324 is responsible for inhaling and discharging air, and the inner blade 1323 can enhance the guidance and acceleration of airflow, reduce vortex and backflow, and thus improve the overall air flow. In addition, the inner blade 1323 and the outer blade 1324 can be arranged in a staggered manner, that is, there is a phase difference between the inner blade 1323 and the outer blade 1324, which means that they do not reach the same position at the same time. This design can reduce the instability of airflow, making the airflow more continuous and stable, thereby increasing the flow. The arrangement of the fan assembly 13 greatly improves the flow rate and wind power of the airflow in the air outlet channel 1a. Based on this, the high-density heat-conducting fin structure 22 and the filter 114 can be arranged at the air inlet 113a. The fan assembly 13 of the embodiment can provide airflow with high flow rate and strong wind power, which can offset the air resistance caused by the heat-conducting fin structure 22 and the filter 114.

[0055] Further, please refer to Figure 1 、 Figure 3 and Figure 4 In an embodiment of the present application, the heating assembly 2 further comprises a temperature control switch 24, the temperature control switch 24 is electrically connected with the heating wire; and / or, the heating element 21 further comprises an isolation element 215, the isolation element 215 wraps the outer wall of the power connection element 211 and extends into the insulating heat-conducting layer 213.

[0056] In the embodiment, at least one of the electrical connections at both ends of the heating element 21 is electrically connected to the temperature control switch 24 before being connected to the power supply. After the electrical connection 211 at both ends of the heating element 21 is connected to the power supply, the heating wire 212 inside the heating element 21 generates heat, which is conducted to the connected heat-conducting fin structure 22 through the internal insulating heat-conducting material and the outer wall metal high-heat-conducting material, so that the heat is dissipated. The heat-conducting fin structure 22 is provided with a position where the temperature control switch 24 is fixed. When the heat exceeds the temperature value monitored by the temperature control switch 24, the temperature control switch 24 will disconnect the power supply, i.e. the power supply line of the heating wire 212 is disconnected, and the temperature of the heat-conducting fin structure 22 gradually decreases. When the temperature of the heat-conducting fin structure 22 decreases to a safe temperature, the temperature control switch 24 will naturally restore the power supply, and the heating wire 212 will continue to generate heat. This cycle can prevent the heating assembly 2 from overheating and causing a fire hazard. The temperature control switch 24 can be a bimetallic temperature control switch or a thermistor temperature control switch. The bimetallic temperature control switch uses two metal sheets with different expansion coefficients combined together. When the temperature changes, the bimetallic sheet will bend to different degrees, thereby triggering the action of disconnecting the circuit. When the temperature decreases, the bimetallic sheet restores the connection, and the circuit returns to the on state. The thermistor temperature control switch uses the characteristic that the resistance of a thermistor changes with temperature. When the temperature rises, the resistance gradually increases, causing the current in the circuit to decrease. When the temperature reaches the set temperature, the resistance increases to block the current in the circuit, thereby triggering the action of disconnecting the circuit. When the temperature decreases, the resistance also decreases, and the circuit returns to the on state. The thermistor temperature control switch has the advantages of adjustable protection range, wide application range, easy operation, and high voltage resistance. The temperature control switch can have various structural forms, and the structure of the temperature control switch is not limited in the present application. In addition, the heating assembly can be provided with various types of temperature control switches, and the multiple temperature control switches can be connected in series to improve the safety performance of the heating assembly.

[0057] The isolation member 215 can block the gap at both ends of the heat-conducting outer tube to prevent the heating wire 212 from oxidizing or causing short circuit, electric leakage, etc. Therefore, the connection between the heat-conducting outer layer 214 and the peripheral side of the isolation member 215 can be sealed, or the end surface of the isolation member 215 can be wrapped by the end flange of the heat-conducting outer layer 214 without contacting the electrical connection 211. In the embodiment, the isolation member 215 can be made of ceramic material and sealed at both ends of the heat-conducting outer tube in a columnar or bead shape. Ceramic is a good electrical insulating material, which can prevent the current from leaking from the heating wire 212 of the heating tube to the external metal shell or other conductive parts, thereby avoiding the risk of short circuit and electric shock. Moreover, ceramic is stable at high temperature and is not easy to melt or deform, which helps to improve the overall safety performance of the heating tube.

[0058] Further, please refer to Figure 1 , Figure 3 , Figure 7 and Figure 9In an embodiment of the utility model, the heat-conducting fin structure 22 is detachably connected with the heating element 21, and / or the heat-conducting fin structure 22 comprises a plurality of fin bodies 222; a plurality of ribs 2221 are arranged at intervals on the fin body 222 and extend to the adjacent fin body 222; and / or the heating assembly 2 further comprises a first temperature measuring element, which is in heat-conducting connection with the heating element 21 or the heat-conducting fin structure 22, for monitoring the temperature of the heating assembly 2; and / or the heating assembly 2 further comprises a second temperature measuring element, which is used for monitoring the air outlet temperature of the handpiece assembly 100.

[0059] In the embodiment, the detachable connection between the heat-conducting fin structure 22 and the heating element 21 can be realized by clamping, setting a sliding groove and a sliding rail, or setting a bolt and a screw hole, etc. It should be noted that, in the realization of detachable connection, enough contact area should be reserved between the heat-conducting fin structure 22 and the heating element 21 to ensure the heat exchange efficiency. The detachable connection mode allows the heat-conducting fin structure to be removed for cleaning, prevents excessive dust accumulation from reducing the heat dissipation effect, allows the damaged heating element 21 to be replaced without the need for replacing the entire machine, and reduces the maintenance difficulty.

[0060] In order to reduce the wind resistance and improve the density of the fin body 222, the fin body 222 is relatively thin in shape and is easily deformed by external force. In order to strengthen the support between adjacent fin bodies 222, the heat-conducting fin structure 22 comprises a plurality of fin bodies 222, and a plurality of ribs 2221 are arranged at intervals on the fin body 222 and extend to the adjacent fin body 222. The ribs 2221 support the adjacent fin bodies 222 apart, improve the anti-deformation ability of the fin body 222, and ensure enough ventilation area.

[0061] The heating assembly 2 further comprises a first temperature measuring element, which is in heat-conducting connection with the heating element 21 or the heat-conducting fin structure 22, for monitoring the temperature of the heating assembly 2. The first temperature measuring element can be in communication connection with a display module to display the temperature of the heating assembly 2 in real time, issue a control instruction to adjust the heating temperature of the heating assembly 2, improve the user experience, and prevent the heating assembly 2 from being overloaded to cause danger.

[0062] The heating assembly 2 further comprises a second temperature measuring element for monitoring the air outlet temperature of the head assembly 100. In this embodiment, the second temperature measuring element is arranged in the air outlet direction of the head assembly 100, and can be arranged at a position close to the air outlet of the air duct of the head assembly 100. The second temperature measuring element can monitor the blowing temperature in real time, and then feed back the blowing temperature to the control unit. The control unit can control the power of the heating element 21 through electronic elements (such as thyristors), so as to control the temperature of the air outlet. The same air outlet speed can reach different temperatures, or the same temperature can be reached under different air speeds. It should be noted that in some embodiments, the purpose of arranging the second temperature measuring element can be different from that of the first temperature measuring element. The first temperature measuring element is for safety protection, while the second temperature measuring element is for monitoring the air temperature and controlling the air temperature of the air outlet in real time.

[0063] Further, please refer to Figure 4 、 Figure 8 and Figure 9 In an embodiment of the present application, the heating element 21 is arranged in a ring shape, and the heat conduction fin structure 22 is sleeved on the outer periphery of the heating element 21. Alternatively, the heat conduction fin structure 22 comprises a seat plate 221 and a plurality of fin bodies 222 arranged along the periphery of the seat plate 221, and the heating element 21 is connected to the seat plate 221. Alternatively, the heating element 21 is arranged in a straight line, and the heat conduction fin structure 22 is connected to the side wall of the heating element 21 and is arranged in the length direction of the heating element 21.

[0064] In one scheme of this embodiment, the heating element 21 is arranged in a ring shape, the heat conduction fin structure 22 comprises a plurality of fin bodies 222 and a ring-shaped connecting plate, the heating element 21 is connected to the inner periphery wall of the ring-shaped connecting plate, and the plurality of fin bodies 222 are arranged radially and spaced apart on the outer periphery wall of the ring-shaped connecting plate. The heating assembly 2 of this scheme can adapt to most shapes of the air outlet channel 1a, and the airflow can flow through the ring-shaped middle part, and the flow capacity of the airflow is large.

[0065] In another scheme of this embodiment, the heat conduction fin structure 22 comprises a seat plate 221 and a plurality of fin bodies 222 arranged along the periphery of the seat plate 221, and the heating element 21 is connected to the seat plate 221. The seat plate 221 has strong carrying capacity, can connect more fin bodies 222 with larger sizes, increases the heat exchange area, and improves the heat exchange efficiency of the heating assembly 2 and the incoming air.

[0066] In another scheme of this embodiment, the heating element 21 is arranged in a straight line, and the heat conduction fin structure 22 is connected to the side wall of the heating element 21 and is arranged in the length direction of the heating element 21. In this way, the air outlet hole 11a can be designed in a strip shape, can heat a larger range of blowing, and can be applied to vertical or horizontal heating devices, thereby improving the practicability of the heating assembly 2.

[0067] Please refer to Figure 1 , Figure 3 , Figure 4 and Figure 12 In an embodiment of the present application, the heating element 21 is detachably connected with the head assembly 100; or, the heat-conducting fin structure 22 is detachably connected with the head assembly 100; or, the heating assembly 2 further comprises a heat-conducting fixing element 23, the heat-conducting fixing element 23 is detachably connected with the head assembly 100, and the heat-conducting fin structure 22 and the heating element 21 are respectively connected to opposite sides of the heat-conducting fixing element 23.

[0068] In the present embodiment, the heating element 21 or the heat-conducting fin structure 22 is provided with a connecting lug, and the connecting lug is provided with a through hole, and the connecting lug and the head assembly 100 can be connected through a bolt. It should be noted that the number of the connecting lug and the through hole can be increased according to the need, and the detachable connection between the heating element 21 or the heat-conducting fin structure 22 and the head assembly 100 is not limited to the connecting lug and the through hole, but can also be achieved by means of a sliding rail and a sliding groove, a clamping structure, etc. The detachable connection allows the heat-conducting fin structure to be removed for cleaning, preventing excessive dust accumulation from reducing the heat dissipation effect, and also allows the damaged heating element 21 to be replaced without the need for replacing the entire machine, thereby reducing the difficulty of maintenance. The heating element 21 and the heat-conducting fin structure 22 can also be connected through the heat-conducting fixing element 23, which can be a welding material or heat-resistant glue.

[0069] The present application also provides a hair dryer.

[0070] In an embodiment of the present application, the hair dryer comprises the head assembly 100 according to any one of the above embodiments. The specific structure of the head assembly 100 is referred to the above embodiments. Since the hair dryer adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0071] The above is only an exemplary embodiment of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation or direct / indirect application in other related technical fields based on the technical concept of the present application and the contents of the present application are included in the patent protection scope of the present application.

Claims

1. A head assembly, characterized in that, The head assembly comprises: a blowing module, in which an air outlet channel is formed; and a heating assembly, which comprises a heating element and a heat-conducting fin structure, the heat-conducting fin structure being an integral structure, the heat-conducting fin structure being arranged along the circumference of the heating element and being in heat-conducting connection with the heating element, the heating element and the heat-conducting fin structure being arranged in the air outlet channel and on an air outlet path of the blowing module; the heating element comprises an electricity connection part, a heating wire, an insulating and heat-conducting layer and a heat-conducting outer layer, the insulating and heat-conducting layer wrapping the heating wire, the heat-conducting outer layer wrapping the insulating and heat-conducting layer, the electricity connection part being connected to both ends of the heating wire and extending into the insulating and heat-conducting layer.

2. The handpiece assembly of claim 1, wherein, The blowing module comprises: a housing, in which the air outlet channel is formed, the housing being provided with an air outlet hole communicating with the air outlet channel; a mounting structure arranged in the air outlet channel; and a fan assembly connected to one end of the mounting structure, the heating element and the heat-conducting fin structure being connected to the other end of the mounting structure, the heat-conducting fin structure being arranged corresponding to the air outlet hole.

3. The handpiece assembly of claim 2, wherein, The housing comprises: a rear shell, in which the air outlet channel is formed; and a front cover connected to one end of the rear shell and covering the heating assembly, the front cover being provided with the air outlet hole.

4. The handpiece assembly of claim 3, wherein, A heat insulation pad is arranged between the heating assembly and the mounting structure; and / or, the front cover comprises an outer ring, an inner ring and a rib connecting the inner ring and the outer ring, the inner ring and the outer ring being spaced apart to form the air outlet hole, the inner ring being connected to the mounting structure; and / or, the housing further comprises an air inlet cover connected to one end of the rear shell away from the front cover and communicating with the air outlet channel, the air inlet cover being circumferentially provided with an air inlet, and the air inlet cover being provided with a filter element.

5. The handpiece assembly of claim 2, wherein, The fan assembly comprises a fan body and a fan blade, the fan blade comprising an inner hub, an outer hub, an inner blade and an outer blade; the inner hub is connected to the fan body, the outer hub is coaxially arranged with the inner hub and is sleeved on the outer circumference of the inner hub, and an air inlet flow channel is formed between the outer hub and the inner hub; the outer blade is connected to the outer circumference of the outer hub, and the inner blade is arranged in the air inlet flow channel and is connected to the outer hub and the inner hub.

6. The handpiece assembly of claim 1, wherein, The heating assembly further comprises a temperature control switch, which is electrically connected to the heating wire; and / or, the heating element further comprises an isolation part, which wraps the outer wall of the electricity connection part and extends into the insulating and heat-conducting layer.

7. The handpiece assembly of claim 1, wherein, The heat-conducting fin structure is detachably connected to the heating element; and / or, the heat-conducting fin structure comprises a plurality of fin bodies, a plurality of ribs are arranged on the fin bodies and extend to the adjacent fin body; and / or, the heating assembly further comprises a first temperature measuring element, which is in heat-conducting connection with the heating element or the heat-conducting fin structure, for monitoring the temperature of the heating assembly. And / or, the heating assembly further comprises a second temperature measuring element for monitoring the air outlet temperature of the handpiece assembly.

8. The handpiece assembly of claim 1, wherein, The heating element is arranged in a ring shape, and the heat-conducting fin structure is sleeved on the outer periphery of the heating element. Alternatively, the heat-conducting fin structure comprises a seat plate and a plurality of fin bodies arranged at intervals along the periphery of the seat plate, and the heating element is connected to the seat plate. Alternatively, the heating element is arranged in a straight line shape, and the heat-conducting fin structure is connected to the side wall of the heating element and arranged in the length direction of the heating element.

9. The handpiece assembly of claim 1, wherein, The heating element is detachably connected to the handpiece assembly. Alternatively, the heat-conducting fin structure is detachably connected to the handpiece assembly. Alternatively, the heating assembly further comprises a heat-conducting fixing element which is detachably connected to the handpiece assembly, and the heat-conducting fin structure and the heating element are respectively connected to opposite sides of the heat-conducting fixing element.

10. A blow-off apparatus characterized by comprising: The hair dryer comprises the handpiece assembly according to any one of claims 1 to 9.

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