Novel non-resistive load energy-saving blower heating device

Abstract

A novel non-resistive load energy-saving blower heating device comprises a heat insulation shell and a heating element. The heat insulation shell is cylindrical and comprises a first heat insulation barrel, a second heat insulation barrel and a connecting part. And the accommodating cavity is provided with a ventilation hole. The heating element comprises a heating coil and an airflow heat conduction pipe. And the heating coil is wound on the second heat insulation cylinder, so that the heating coil generates an alternating magnetic field in the second heat insulation cylinder after being electrified. The airflow heat conduction pipes are arranged in the second heat insulation cylinder, so that the airflow heat conduction pipes are located in an alternating magnetic field, heat energy is generated on the surfaces of the airflow heat conduction pipes, the energy utilization rate is high, electric energy consumption is reduced, the temperature can be more accurately controlled by adjusting the current intensity, heat distribution is uniform during blowing, and the service life of the air conditioner is prolonged. And the heating coil can be cooled while heating, the heating mode is mild, damage to other elements is small, the service life is long, and high practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hair dryers, in particular to a novel non-resistive load energy-saving hair dryer heating device. Background Art

[0002] Hair dryers are common household appliances primarily used for quick hair drying and styling. Their heating method is primarily based on the principle of heat energy conversion and transfer. Traditional hair dryers use a built-in heating wire to generate heat, which is then directed by a fan to heat the air through the heater and blow it out. However, this heating wire heating method is relatively inefficient and produces uneven heating, resulting in uneven temperatures in the hot air blown out, affecting both hair drying and styling quality.

[0003] Chinese patent CN2020222015611 discloses a hair dryer heating wire and a hair dryer, which includes a fixing base and a heating wire. The fixing base is provided with a mounting groove, and the heating wire is axially wound in multiple layers along the mounting groove on the fixing base.

[0004] The above solution is to design the heating wire into a wavy shape and wind it around a fixed base. The crest of the wavy heating wire decreases or increases from the lower layer to the upper layer, so that the heating wires of the upper and lower layers do not completely overlap when viewed from the vertical direction. The wavy shape can be a sharp wave or a valley wave. This structural design allows the fluid entering from the bottom of the hair dryer heating wire to fully contact the heating wire of each layer, thereby fully removing the heat released by the heating wire, increasing the temperature of the hair dryer outlet, and also reducing the surface temperature of the heating wire, extending its service life. However, it still does not solve the problem of low thermal efficiency and uneven heating of the heating wire itself. Utility Model Content

[0005] In view of this, the present invention provides a novel non-resistive load energy-saving hair dryer heating device to solve the above technical problems.

[0006] A novel non-resistive load energy-saving hair dryer heating device comprises an insulating shell and a heating element disposed within the shell. The insulating shell comprises a first insulating tube with one end open, a second insulating tube spaced apart within the first insulating tube, and a connecting portion connecting the axial ends of the first and second insulating tubes. A receiving cavity is formed between the first and second insulating tubes, and a plurality of ventilation holes are spaced apart in the connecting portion. The heating element comprises a heating coil disposed vacantly within the receiving cavity and a set of airflow heat conducting pipes extending through the second insulating tube.

[0007] Furthermore, the cross sections of the first thermal insulation tube and the second thermal insulation tube are both annular.

[0008] Furthermore, the midpoints of the first thermal insulation tube and the second thermal insulation tube are located on the same central axis; the first thermal insulation tube and the second thermal insulation tube have the same height.

[0009] Furthermore, a connection terminal is provided at both ends of the heating coil extending toward the opening of the accommodating cavity.

[0010] Furthermore, the maximum height of the heating coil is the same as the height of the second thermal insulation tube.

[0011] Furthermore, the plurality of airflow heat conducting pipes are arranged in a honeycomb structure.

[0012] Furthermore, the airflow heat conducting pipes may also be arranged into an orthogonal grid structure, a corolla ring structure, a radial structure or a stacked structure.

[0013] Furthermore, the heating element includes a heating coil sleeved on the second thermal insulation tube, and an airflow heat-conducting structure passing through the second thermal insulation tube.

[0014] Furthermore, the airflow heat-conducting structure includes a plurality of concentric tubes with different diameters, and two screws staggeredly passing through the plurality of concentric tubes.

[0015] Furthermore, the airflow heat-conducting structure includes a plurality of concentric tubes with different diameters, and at least one rib plate arranged between the plurality of concentric tubes.

[0016] Compared with the prior art, the utility model provides a novel non-resistive load energy-saving hair dryer heating device by setting a first insulation tube and a second insulation tube. The heating coil is wound on the second insulation tube, so that the heating coil generates an alternating magnetic field in the second insulation tube after being energized. A plurality of airflow heat conduction pipes are arranged in the second insulation tube, so that the airflow heat conduction pipes are in the alternating magnetic field and generate heat energy on their own surfaces, with high energy utilization rate, saving electricity consumption, and being able to more accurately control the temperature by adjusting the current intensity on the heating coil. The heat is evenly distributed during blowing, and the heating coil can cool itself while heating. The heating method is gentle, with less damage to other components, long service life, and high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a novel non-resistive load energy-saving hair dryer heating device provided by the utility model.

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the new non-resistive load energy-saving hair dryer heating device from another perspective.

[0019] Figure 3for Figure 1 Schematic diagram of the cross-sectional structure of a new non-resistive load energy-saving hair dryer heating device.

[0020] Figure 4 for Figure 1 Schematic diagram of the decomposed structure of the new non-resistive load energy-saving hair dryer heating device.

[0021] Figure 5 for Figure 1 Usage status diagram of the new non-resistive load energy-saving hair dryer heating device.

[0022] Figure 6 for Figure 1 A schematic structural diagram of another structure of the air flow duct of the new non-resistive load energy-saving hair dryer heating device.

[0023] Figure 7 This is a schematic structural diagram of a novel non-resistive load energy-saving hair dryer heating device according to the second embodiment.

[0024] Figure 8 This is another structural schematic diagram of the air flow duct of the novel non-resistive load energy-saving hair dryer heating device of the second embodiment. DETAILED DESCRIPTION

[0025] The following is a further detailed description of specific embodiments of the present invention. It should be understood that the description of the embodiments of the present invention herein is not intended to limit the scope of protection of the present invention.

[0026] like Figures 1 to 6 , which is a schematic structural diagram of a novel non-resistive load energy-saving hair dryer heating device provided by the first embodiment of the present invention. The novel non-resistive load energy-saving hair dryer heating device includes an insulating shell 10 and a heating element 20 disposed in the insulating shell 10. It is conceivable that the novel non-resistive load energy-saving hair dryer heating device also includes other functional structures, such as a fixing bracket, a fixing clip, etc., which are well known to those skilled in the art and will not be described in detail here.

[0027] The thermal insulation shell 10 includes a first thermal insulation tube 11 with one end open, a second thermal insulation tube 12 spaced apart from the first thermal insulation tube 11, and a connecting portion 13 connecting the axial ends of the first thermal insulation tube 11 and the second thermal insulation tube 12. The thermal insulation shell 10 is made of a high-temperature resistant material, such as ceramic fiber, glass fiber, mica tube, etc., to prevent heat from being transferred to the outside of the first thermal insulation tube 11 and to prevent heat damage to materials that are not resistant to high temperatures.

[0028] The cross-sections of the first insulation tube 11 and the second insulation tube 12 are both annular. The central axes of the first insulation tube 11 and the second insulation tube 12 are on the same straight line. The axial heights of the first insulation tube 11 and the second insulation tube 12 are the same.

[0029] A receiving cavity 14 is formed between the first heat-insulating tube 11 and the second heat-insulating tube 12. The receiving cavity 14 is used to dispose the heating element 20, which will be described below in conjunction with the heating element 20.

[0030] The connecting portion 13 is provided with a plurality of ventilation holes 15 at intervals. The presence of the ventilation holes 15 allows air to enter the accommodating cavity 14 from the opening of the accommodating cavity 14 and flow out from the plurality of ventilation holes 15, thereby forming an air duct, thereby cooling and dissipating the heating element 20 disposed in the accommodating cavity 14, and extending the service life of the heating element 20.

[0031] The heating element 20 includes a heating coil 21 disposed vacantly in the accommodating cavity 14 and a set of airflow heat conducting pipes 22 passing through the second heat insulating tube 12 .

[0032] The heating coil 21 is sleeved on the outside of the second thermal insulation tube 12, that is, accommodated in the accommodating chamber 14, and the two ends of the heating coil 21 extend from the opening of the accommodating chamber 14 to form two terminal blocks 23. The maximum height of the heating coil 21 is the same as the axial height of the second thermal insulation tube 12. The heating coil 21 is connected to the external power supply device through the two terminal blocks 23, so that the heating coil 21 forms a passage, thereby generating an alternating magnetic field by the heating coil 21. The heating coil 21 can lower its own temperature and reduce resistance by the cold air entering the accommodating chamber 14 from the opening of the accommodating chamber 14, thereby reducing the loss of electric energy during transmission, improving the efficiency of electric energy transmission, avoiding accelerated aging and oxidation of the heating coil 21 due to high temperature, and extending the service life of the coil. At the same time, by lowering the temperature of the heating coil 21 itself, the current carrying capacity of the heating coil 21 can be further improved and the intensity of the alternating magnetic field can be maintained.

[0033] The air flow duct 22 can be made of magnetic conductive materials, such as iron, nickel, carbon steel, etc.

[0034] The plurality of airflow heat conducting pipes 22 are arranged in a honeycomb structure to maximize the use of the space of the second insulation tube 12, so that as many airflow heat conducting pipes 22 as possible are set in the second insulation tube 12, and a larger contact area can be provided, thereby improving the efficiency of heat exchange. The plurality of airflow heat conducting pipes 22 can be bonded and fixed to each other, that is, the plurality of airflow heat conducting pipes 22 are bonded together using high-temperature resistant metal glue or similar strong adhesives. It is conceivable that the plurality of airflow heat conducting pipes 22 can also be wrapped with high-temperature tape, covered with iron barrels, or wrapped with iron sheets and other auxiliary fixing methods to maintain the stability of the honeycomb structure. Of course, the plurality of airflow heat conducting pipes 22 can also be directly manufactured into an integrated honeycomb structure and embedded in the second insulation tube 12.

[0035] It is conceivable that the airflow heat conducting pipe 22 can also be set to an orthogonal grid structure, a corolla ring structure, a radial structure or a stacked structure, etc., which can also achieve the effect achieved by the above-mentioned honeycomb structure. The orthogonal grid structure, radial structure, and stacked structure are common structures, so they will not be described in detail here. For the corolla ring structure, please refer to Figure 6 .

[0036] The maximum length of the airflow heat pipe 22 is the same as the axial height of the heating coil 21, so that the airflow heat pipe 22 can be completely in the alternating magnetic field generated by the heating coil 21, so that the airflow heat pipe 22 generates eddy currents and thus the airflow heat pipe 22 generates heat. Since the generated eddy currents are evenly distributed on the airflow heat pipe 22, the heating method is efficient and the heat is evenly distributed. In addition, the frequency of the current input by the heating coil 21, as well as parameters such as voltage or current can be adjusted to achieve precise control of temperature and heating rate to meet the use requirements of different scenarios. The principle of the airflow heat pipe 22 generating heat through the alternating magnetic field is the electromagnetic induction phenomenon, which is a prior art and will not be described here.

[0037] Each heat pipe 22 has a chamfer 24 on its inner side facing away from the terminal 23. The angle between the end surface of the chamfer 24 and the wall of the heat pipe 22 is between 30 and 45 degrees, making the heat pipe 22 smoother, reducing vortexes formed at the port, and increasing the amount of gas entering the heat pipe 22.

[0038] When in use, the heating coil 21 is connected to current through the terminal 23. When energized, the heating coil 21 generates an alternating magnetic field, causing the airflow heat-conducting pipe 22 disposed in the second insulation tube 12 to generate eddy currents in the alternating magnetic field, thereby causing the airflow heat-conducting pipe 22 to generate heat. The fan provided in the hair dryer blows air toward the airflow heat-conducting pipe 22, and most of the air enters the second insulation tube 12, heating the gas entering the second insulation tube 12 through the airflow heat-conducting pipe 22. A small amount of air enters the accommodating chamber 14 from the opening of the accommodating chamber 14, cools the heating coil 21, and then flows out from the multiple ventilation holes 15, thereby preventing the heating coil 21 from heating up and causing an increase in resistance, improving performance and efficiency, extending service life, and avoiding damage from overheating.

[0039] like Figures 7 to 8 FIG2 is a schematic diagram of a novel magnetic induction heating hair dryer device according to a second embodiment of the present invention. The novel non-resistive load energy-saving hair dryer heating device includes a heat-insulating shell 10 and a heating element 20 disposed in the heat-insulating shell 10.

[0040] The heat-insulating shell 10 includes a first heat-insulating tube 11 with one end open, and a second heat-insulating tube 12 disposed in the first heat-insulating tube 11. The central axes of the first heat-insulating tube 11 and the second heat-insulating tube 12 coincide with each other.

[0041] The heat-insulating shell 10 has the same structure and function as the first embodiment, so no further details will be given.

[0042] The heating element 20 includes a heating coil 21 sleeved on the second thermal insulation tube 12 and an air flow heat conduction structure 25 passing through the second thermal insulation tube 12 .

[0043] The heating coil 21 has the same structure and function as that of the first embodiment, so no further details will be given.

[0044] The difference between the second embodiment and the first embodiment is that the airflow heat conduction structure 25 is used in the second embodiment to replace the airflow heat conduction pipe 22 of the first embodiment. Figure 7 As shown, the airflow heat conducting structure 25 is a plurality of spaced concentric tubes 251. Specifically, the airflow heat conducting structure 25 includes a plurality of concentric tubes 251 of different diameters and two screws 252 passing through the plurality of concentric tubes 251 in an alternating manner.

[0045] The outermost concentric tube 251 is interference-fitted with the second thermal insulation tube 12 , so that the airflow heat-conducting structure 25 is embedded in the second thermal insulation tube 12 .

[0046] The total length of each screw 252 is the same as the outer diameter of the outermost concentric tube 251. When connected, both ends of each screw 252 can be immersed in the side wall of the outermost concentric tube 251.

[0047] Each of the screws 252 passes through the multiple concentric tubes 251 and is fixed to the second thermal insulation tube 12 , and the two screws 252 can prevent the multiple concentric tubes 251 from shaking in the second thermal insulation tube 12 during use, thereby playing a fixing role.

[0048] See also Figure 8 The airflow heat conduction structure 25 includes multiple concentric tubes 251 of varying diameters and at least one rib 253 disposed between the concentric tubes 251, thereby forming a single unit. The number of ribs 253 can be adjusted based on actual needs. When the concentric tubes 251 are connected by the ribs 253, the outermost concentric tube 251 forms an interference fit with the second insulation cylinder 12, which can be reinforced with glue.

[0049] During use, the heating coil 21 is connected to a current through the terminal 23. When energized, the heating coil 21 generates an alternating magnetic field, causing the concentric tubes 251 disposed in the second thermally insulated cylinder 12 to generate eddy currents in the alternating magnetic field. This causes the concentric tubes 251 to generate heat, thereby heating the gas flowing between the concentric tubes 251.

[0050] Compared with the prior art, the utility model provides a novel non-resistive load energy-saving hair dryer heating device by providing a first insulation tube 11 and a second insulation tube 12. The heating coil 21 is wound around the second insulation tube 12, so that the heating coil 21 generates an alternating magnetic field in the second insulation tube 12 after being energized. A plurality of airflow heat conduction pipes 22 are provided in the second insulation tube 12, so that the airflow heat conduction pipes 22 are in the alternating magnetic field and generate heat energy, with high energy utilization rate, saving electricity consumption, and being able to more accurately control the temperature by adjusting the current intensity on the heating coil 21, so that the heat is evenly distributed during blowing, and the heating coil 11 can cool it while heating, so the heating method is gentle, with less damage to other components, long service life, and high practicality.

[0051] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements or improvements within the spirit of the present invention are included in the scope of the claims of the present invention.

Claims

1. A novel non-resistive load energy-saving hair dryer heating device, characterized by: The new non-resistive load energy-saving hair dryer heating device includes an insulating shell and a heating element arranged in the insulating shell. The insulating shell includes a first insulating tube with an open end, a second insulating tube arranged at an interval in the first insulating tube, and a connecting part connected between the axial ends of the first insulating tube and the second insulating tube. A accommodating cavity is formed between the first insulating tube and the second insulating tube, and a plurality of ventilation holes are arranged at intervals on the connecting part. The heating element includes a heating coil idle in the accommodating cavity and a group of airflow heat-conducting pipes passing through the second insulating tube. The plurality of airflow heat-conducting pipes are arranged in a honeycomb structure, and a chamfer is provided on the inner side of the end of each airflow heat-conducting pipe facing away from the terminal. The angle between the end face of the chamfer and the pipe wall of the airflow heat-conducting pipe is between 30 degrees and 45 degrees.

2. The novel non-resistive load energy-saving hair dryer heating device according to claim 1, characterized in that: The cross sections of the first thermal insulation tube and the second thermal insulation tube are both annular.

3. The novel non-resistive load energy-saving hair dryer heating device according to claim 1, characterized in that: The midpoints of the first thermal insulation tube and the second thermal insulation tube are located on the same central axis.

4. The novel non-resistive load energy-saving hair dryer heating device according to claim 1, characterized in that: Both ends of the heating coil are extended toward the opening of the accommodating cavity to form a connection terminal.

5. The novel non-resistive load energy-saving hair dryer heating device according to claim 1, characterized in that: The maximum height of the heating coil is the same as the height of the second thermal insulation cylinder.

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