WO2024007658A1 - 加热器及护发设备 - Google Patents

加热器及护发设备 Download PDF

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Publication number
WO2024007658A1
WO2024007658A1 PCT/CN2023/087768 CN2023087768W WO2024007658A1 WO 2024007658 A1 WO2024007658 A1 WO 2024007658A1 CN 2023087768 W CN2023087768 W CN 2023087768W WO 2024007658 A1 WO2024007658 A1 WO 2024007658A1
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WO
WIPO (PCT)
Prior art keywords
heating
air flow
temperature
heating element
detection
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/087768
Other languages
English (en)
French (fr)
Inventor
聂文明
陈兵
熊杰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dreame Innovation Technology Suzhou Co Ltd
Original Assignee
Dreame Innovation Technology Suzhou Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN202221855582.8U external-priority patent/CN218526450U/zh
Priority claimed from CN202222038978.XU external-priority patent/CN217986898U/zh
Priority claimed from CN202222261401.5U external-priority patent/CN218500180U/zh
Application filed by Dreame Innovation Technology Suzhou Co Ltd filed Critical Dreame Innovation Technology Suzhou Co Ltd
Publication of WO2024007658A1 publication Critical patent/WO2024007658A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2/00—Hair-curling or hair-waving appliances ; Appliances for hair dressing treatment not otherwise provided for
    • A45D2/36—Hair curlers or hair winders with incorporated heating or drying means, e.g. electric, using chemical reaction
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D20/00—Hair drying devices; Accessories therefor
    • A45D20/04—Hot-air producers
    • A45D20/08—Hot-air producers heated electrically
    • A45D20/10—Hand-held drying devices, e.g. air douches
    • A45D20/12—Details thereof or accessories therefor, e.g. nozzles, stands
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D6/00—Details of, or accessories for, hair-curling or hair-waving devices
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D6/00—Details of, or accessories for, hair-curling or hair-waving devices
    • A45D6/20—Devices for controlling the temperature of hair curlers
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B1/00—Details of electric heating devices
    • H05B1/02—Automatic switching arrangements specially adapted to apparatus ; Control of heating devices
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders

Definitions

  • the present invention relates to the technical field of hair dryers, and in particular to a heater and a hair dryer.
  • hair dryers As a necessity in life, hair dryers generally have heaters that heat the air, thereby improving the efficiency of hair drying.
  • the heater includes multiple sets of heating wires arranged parallel and spaced along the axial direction, and the size of the heating wires is fixed along the gas flow direction, that is, the heating range of the heating wires is the same along the gas flow direction, which will cause the upstream end to The heated fluid further heats the heating wire at the downstream end, causing the heating wire at the downstream end to overheat and turn red, affecting the safety of the hair dryer.
  • An object of the present invention is to provide a heater that can protect the heating wire in the heater, thereby improving the safety of use of a hair dryer equipped with the heater.
  • Another object of the present invention is to provide a hair dryer that uses the above-mentioned heater to improve hair drying efficiency.
  • the present invention adopts the following technical solutions:
  • a heater including:
  • a housing provided with an airflow chamber extending along the axial direction of the housing;
  • the heating component is arranged in the air flow chamber.
  • the heating component is provided with a plurality of heating parts along the gas flow direction, and the outer diameters of the plurality of heating parts increase one by one along the gas flow direction.
  • the inner diameters of the plurality of heating parts increase one by one.
  • the extension length of the heating part located upstream of the gas flow along the gas flow direction is not less than the extension length of the heating part located downstream of the gas flow along the gas flow direction.
  • the heater includes a support frame, which is disposed inside the airflow chamber; each heating part includes:
  • At least one heating wire is wound around the support frame in a wavy shape in the air flow chamber.
  • the distance between the inner diameters of the plurality of heating parts and the inner wall of the airflow chamber is not less than a preset distance.
  • the support frame includes:
  • a plurality of support plates are arranged on the inner wall of the airflow chamber at intervals along the circumferential direction of the housing, and the support plates are configured to support from a radially outward direction of the housing The heating part.
  • the support plate includes:
  • a support part, a plurality of fixing grooves are provided on the support part, the plurality of fixing grooves are spaced apart along the axial direction, and the crest of the heating wire is wound around the fixing grooves.
  • the diameter of the support part is set correspondingly to the size of the heating part.
  • the support plate is made of mica sheets.
  • the heater also includes:
  • At least one limiting plate is provided between two adjacent support plates, and the limiting plate is configured to fix the heating part from the outer diameter of the heating part.
  • a hair dryer includes a heater as described above.
  • the invention provides a heater, which includes a shell and a heating component.
  • the housing is provided with an air flow chamber extending along the axial direction of the housing, and the heating component is arranged in the air flow chamber.
  • the heating component is provided with multiple heating parts, and the outer diameters of the multiple heating parts circulate along the gas flow direction.
  • the directions increase one by one, so that the downstream heating part and the upstream heating part are dislocated, thereby preventing the upstream heating fluid from directly heating the downstream heating part, improving the safety of the heater use, and also making the heating part located downstream of the air flow
  • the increased area enables the gas in the air flow chamber inside the heater to be fully heated, thereby improving the heating efficiency and thereby improving the efficiency of the hair dryer in drying hair.
  • the present invention also provides a hair dryer, which can help improve the hair drying efficiency of the hair dryer through the above-mentioned heater.
  • the blowing device generally includes a casing, a negative pressure mechanism and a heating mechanism arranged in the casing.
  • the negative pressure mechanism is suitable for generating air flow so that the air flow passes through the air flow channel formed in the casing.
  • the heating mechanism is arranged in the air flow channel to control the air flow. Apply heat. However, when the temperature of the heating mechanism gradually increases to a higher temperature, the temperature will be transmitted to the housing, which can easily burn the user or the object to be dried, or even cause a fire.
  • the heating mechanism and blowing device provided by the present invention can simultaneously monitor the temperature of the air inlet end and the air outlet end of the heating mechanism, thereby reducing the probability of safety accidents.
  • the invention provides a heating mechanism, which is suitable for installation in a blowing device.
  • the heating mechanism includes:
  • a support member is provided in the air flow channel of the blowing device
  • a heating element is provided on the support element and is suitable for heating the air flow in the air flow channel;
  • At least two overheat protection members are provided. At least two overheat protection members are respectively provided at both ends of the support member and are suitable for monitoring the air flow temperature upstream and downstream of the heating member respectively.
  • the overheat protection member is at least partially disposed on the support member along a first direction, and the first direction is perpendicular to the flow direction of the airflow.
  • the above-mentioned overheating protection element is a fuse, and the fuse is arranged in series with the heating element;
  • the fuse is blown when the air flow temperature value is greater than the protection threshold, and the heating element stops operating.
  • the above-mentioned overheat protection member is a temperature sensor; the heating mechanism is electrically connected to the control mechanism of the blower device;
  • the control mechanism controls the heating element to stop operating.
  • the above-mentioned heating mechanism further includes a flow guide, which is disposed at the upstream port of the inner cylinder of the support member and protrudes outward along the axial direction of the inner cylinder.
  • the shape of the above-mentioned flow guide member protruding outward along the axial direction of the inner cylinder is an arc shape.
  • the above-mentioned flow guide is provided with a plurality of ventilation holes.
  • the above-mentioned heating element includes a heating wire winding and a voltage-reducing wire winding coaxially spaced on the support member, and the heating wire winding is arranged outside the voltage-reducing wire winding; the heating wire winding and the voltage-reducing wire winding
  • the pressed wire windings all have a wavy structure.
  • the above-mentioned support member includes a plurality of fixed long plates and fixed short plates arranged at equal intervals, and each of the fixed long plates and fixed short plates is radially connected between the inner cylinder and the outer cylinder of the support member, One end of the fixed short plate is fixed on the inner cylinder, and the other end is suspended between the inner cylinder and the outer cylinder;
  • the heating wire winding is wound on the fixed long plate in the circumferential direction; the voltage reducing wire winding is wound on the fixed short plate in the circumferential direction.
  • the invention also provides a blowing device, including:
  • the casing has an air inlet and an air outlet, and the air inlet and the air outlet are connected to form an air flow channel;
  • a heating mechanism is arranged in the air flow channel and is electrically connected to the control mechanism;
  • the heating mechanism is a heating mechanism as described in any one of the above.
  • the heating mechanism by setting overheat protection pieces at both ends of the support member and monitoring the airflow temperature upstream and downstream of the heating member, the heating mechanism can be protected in time when one of the airflow temperatures upstream and downstream of the heating member is abnormal.
  • the overheating protection parts arranged upstream hot spots caused by dust, hair, etc. accumulated in the airflow can be detected in a more timely manner, further increasing the probability that thermal peaks in the heating mechanism will be detected in a timely manner, and thus Reduce the probability of safety accidents.
  • the blowing device provided by the present invention is equipped with the heating mechanism of the present application. Since the heating mechanism can monitor the air flow temperature upstream and downstream of the heating element in a more timely manner, compared with the existing technology, the blowing device can more effectively avoid the heating element due to the heating mechanism. If the temperature is too high, the temperature of the blown air flow will be too high, or the shell of the blower device will be overheated, thereby scalding the user or the object to be dried. At the same time, it can also avoid overheating and damage to the internal components of the blower device due to hot spots inside the heating mechanism, or even Causes safety accidents and is safer.
  • Traditional home appliances such as hair dryers, curling irons, etc.
  • the heating wire of traditional home appliances is generally arranged in a ring-shaped coil inside the casing.
  • the air flow temperature near the heating wire is higher, while the air flow temperature in the middle of the heating wire is lower, making the temperature of the blown air flow uneven.
  • the temperature control detection device is generally located in the middle of the heating wire. This will cause a large difference between the detected temperature and the actual temperature of the heating wire, and will not provide temperature control protection.
  • the technical problem to be solved by the present invention is that the heating of traditional home appliances is uneven, and at the same time, the temperature control detection results of the home appliances are inaccurate, and the home appliances cannot be effectively protected.
  • the present invention provides a heating component, including:
  • the installation cylinder has an air supply channel formed on its inner ring side;
  • a first heating element is provided in the installation barrel and used to heat the airflow flowing through the air supply channel;
  • the second heating element is at least partially located at the entrance of the air supply channel
  • the temperature control detection structure is provided in the air supply channel and located at the rear side of the second heating element along the air flow direction.
  • the first heating element includes a first heating wire, and the first heating wire is surrounding the inside of the installation barrel.
  • the second heating element includes a second heating wire, and the second heating wire is provided at the mouth of one end of the installation barrel.
  • the first heating element further includes a bracket structure, the bracket structure is provided in the installation barrel, and the first heating element and the temperature control detection structure are installed on the on the bracket structure.
  • the bracket structure includes a partition extending along the radial direction of the installation barrel, and both radial ends of the partition are connected to the installation barrel.
  • the first heating element is arranged in a ring shape to penetrate the partition plate.
  • a plurality of partitions are provided, and the plurality of partitions divide the inside of the installation tube into multiple areas.
  • the second heating element is provided at the end of the partition.
  • the temperature control detection structure includes a first detection part, and the first detection part is provided in the installation barrel.
  • the temperature control detection structure also includes a second detection part and a third detection part, and the second detection part and the third detection part are both located in the installation barrel;
  • the critical detection temperature of the first detection element is lower than the critical detection temperature of the second detection element, and the critical detection temperature of the second detection element is lower than the critical detection temperature of the third detection element.
  • the invention also provides a home appliance product, including:
  • the heating component and,
  • An air flow generating device the air outlet end of the air flow generating device is connected to the installation barrel of the heating component, and one end of the heating component is provided with the second heating element and is located close to the air flow generating device.
  • the heating component provided by the invention includes an installation barrel, a first heating element, a second heating element and a temperature control detection structure.
  • the first heating element in the installation barrel heats the airflow flowing through the installation barrel;
  • the two heating elements are arranged at the entrance of the air supply channel, so that the airflow is heated by the second heating element at the entrance of the air supply channel, and then passes through the first heating element and the second heating element area after entering the air supply channel.
  • Heating multiple heating elements can effectively reduce the cold air area in the installation cylinder, making the heating effect better and the temperature of the air flow more uniform; and the temperature control detection structure is located on the back side of the second heating element along the direction of the air flow, making the temperature control
  • the detection structure can be located in the heating area of the second heating element, and after the air flow is jointly heated by the first heating element and the second heating element, the temperature distribution of the air flow in the installation barrel is more uniform, so the temperature control detection structure detects the result It is also more reliable and can better protect heating components.
  • the first heating element can be set shorter to still ensure the heating effect of the air flow.
  • the size of the heating component can be set smaller to meet the needs of miniaturized products.
  • Figure 1 is a schematic structural diagram of a heater provided by an embodiment of the present invention.
  • Figure 2 is a schematic structural diagram of a heater provided by an embodiment of the present invention.
  • Figure 3 is a schematic structural diagram of a support plate provided by an embodiment of the present invention.
  • Figure 4 is a schematic structural diagram three of a heater provided by an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of the heating part of the heater provided by the embodiment of the present invention.
  • Figure 6 is a schematic structural diagram of the heating mechanism in Embodiment 2 of the present invention.
  • Figure 7 is a schematic structural diagram of the heating mechanism shown in Figure 6 from another perspective
  • Figure 8 is a schematic structural diagram of the inner cylinder, the fixed long plate and the fixed short plate shown in Figure 6 after assembly.
  • Figure 9 is a schematic structural diagram of an embodiment of a heating component provided by the present invention.
  • Figure 10 is a schematic structural diagram of the heating component in Figure 9 from another perspective
  • FIG. 11 is a schematic exploded view of the heating component in FIG. 9 .
  • the markings in the figure are as follows: 100-shell; 110-air flow chamber; 120-inner wall; 130-outer wall; 200-heating component; 210-heating part; 210a-first heating part; 210b-second heating part; 211-heating wire; 300-support plate; 310-support part; 311-fixing groove; 400-limiting plate; 500 - Buck components.
  • 2-Heating element 21-Heating wire winding; 22-Step-down wire winding; 4-Overheating protection element; 5-Support element; 51- Inner cylinder; 52-outer cylinder; 53-heating cavity; 6-fixed long plate; 61-first through hole; 62-clamping slot; 63-second through hole; 7-fixed short plate; 71-fixed groove; 8 -Flow guide; 81-Ventilation hole.
  • 600-heating component 601-installation barrel; 602-first heating element; 621-first heating wire; 622-bracket structure; 6221-partition; 603-second heating element; 631-second heating wire; 604- Temperature control detection structure; 641-the first detection part; 642-the second detection part; 643-the third detection part.
  • connection should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral body.
  • It can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the connection of the structures within the two elements or the interaction between the two elements.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the term “above” or “below” a first feature of a second feature may include direct contact between the first and second features, or may also include the first and second features. No Not in direct contact but through other characteristic contacts between them.
  • the terms “above”, “above” and “above” a first feature on a second feature include the first feature being directly above and diagonally above the second feature, or simply mean that the first feature is higher in level than the second feature.
  • “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
  • hair dryers generally have heaters that heat the air, thereby improving the efficiency of hair drying.
  • This embodiment provides a hair dryer, which includes a heater to achieve the effect of heating air.
  • the hair dryer also includes a housing and a driving component.
  • the driving component is electrically connected to the heater, and the driving component and the heater are simultaneously arranged in the housing. After the driving component is powered on, it can drive the heater to heat the gas.
  • the housing includes an air inlet and an air outlet.
  • the driving component can be a driving member and a fan. The fan is provided at the output end of the driving member, and the fan is provided at the air inlet.
  • the heater is located at an end of the fan away from the air inlet.
  • the driving part is used to drive the fan to rotate, sucking the air outside the casing from the air inlet, blowing the gas to the heater, and then blowing the gas heated by the heater out of the air outlet, thereby forming a hot air flow.
  • the structure has high heating efficiency.
  • the rotation speed output by the driving member is adjustable, allowing the fan to have different rotation speeds, which is beneficial to adjusting the wind speed of the hot air flow, so that the user can select the corresponding wind speed according to needs.
  • the size of the heater is fixed along the gas flow direction, that is, the heating range of the heater is the same along the gas flow direction. This will cause the fluid that has been heated at the upstream end to further heat the heating wire at the downstream end, resulting in heating at the downstream end.
  • the wire becomes red due to overheating, and at the same time, the heating area of the heater is limited and the heating efficiency is low.
  • this embodiment provides a heater, which includes a housing 100 and a heating component 200 .
  • the housing 100 has a barrel-shaped structure and includes an inner wall 120 and an outer wall 130.
  • An airflow cavity 110 extending along the axial direction of the housing 100 is provided between the inner wall 120 and the outer wall 130 to facilitate air flow.
  • the heating component 200 is disposed in the air flow chamber 110.
  • the heating component 200 is provided with a plurality of heating parts 210 along the gas flow direction, and the outer diameters of the plurality of heating parts 210 increase one by one along the gas flow direction, so that the downstream heating part and the upstream heating part are
  • the heating parts are arranged in a staggered position, thereby preventing the upstream heating fluid from directly heating the downstream heating part, which improves the safety of the heater. It also increases the heating area of the heating part 210 located downstream of the air flow, expanding the overall heating range of the heater. This allows the fluid in the air flow chamber 110 inside the heater to be fully heated, thereby improving the heating efficiency. With the above-mentioned heater, the hair dryer can improve the efficiency of hair drying.
  • the outer diameters of the first heating part 210a and the second heating part 210b are It is in the shape of a step, and along the air flow direction, the diameter of the circular cross section where the first heating part 210a is located is larger than the diameter of the circular cross section where the second heating part 210b is located, so that the heating area of the heater can be increased.
  • the number of heating parts 210 may also be three, four, or five, or even more. The more heating parts 210 there are, the more steps will be formed on the outer diameters of the multiple heating parts 210. The heating area of the heating part 210 is gradually increased.
  • the axial cross-sections of the plurality of heating parts 210 may be trapezoidal, wherein the trapezoidal width at the downstream end may be greater than the trapezoidal width at the upstream end, and the trapezoidal design may achieve heater heating.
  • the gradual increase in area improves the heating effect and capacity.
  • existing heaters all use the heating part to heat the air, when the air temperature continues to reach a high temperature, it will have a certain reaction on the heating part, causing the heating part to overheat and become red, which brings certain safety issues. Hidden danger.
  • the inner diameters of the plurality of heating parts 210 increase one by one along the gas flow direction, so that the inner and outer diameters of the plurality of heating parts 210 form a stepped shape along the gas flow direction to prevent the heating parts 210 from being concentrated on the same diameter. to the height to avoid that the fluid heated at the upstream end will further heat the heating part 210 at the downstream end, causing the heating part 210 at the downstream end to become overheated and red, which is conducive to improving the safety factor of the heating part 210, thereby improving the safety of users using the hair dryer. sex.
  • the extension length of the heating part 210 located upstream of the gas circulation along the gas circulation direction is no longer than the extension length of the heating part 210 located downstream of the gas circulation along the gas circulation direction, thereby reducing the heat of the upstream hot gas flow and avoiding the upstream hot gas flow.
  • Overheating causes the heating part 210 at the downstream end to become red due to overheating, which is beneficial to improving the safety factor of the heating part 210 and thereby improving the safety of users using the hair dryer.
  • the extension length of the heating part 210 located upstream of the gas circulation along the gas circulation direction is not less than the extension length of the heating part 210 located downstream of the gas circulation along the gas circulation direction, so that there is more at the upstream end.
  • the densely arranged heating parts 210 improve the rapid heating ability of the gas that first enters the heater, thereby ensuring the heating effect and improving the user experience.
  • the heater includes a support frame, which is disposed inside the airflow chamber 110 .
  • Each heating part 210 includes at least one heating wire 211 , and the at least one heating wire 211 is located along the airflow chamber 110 . Wrap around the support frame in a wavy shape to increase the heating area using a simple heating wire 211 structure. Furthermore, the heights between the peaks and troughs of the heating wire 211 are consistent, so that the heating wires 211 at different positions have the same heating ability, thereby avoiding uneven local heating.
  • the distance between the inner diameters of the plurality of heating parts 210 and the inner wall 120 of the airflow chamber 110 is not low. at a preset distance to provide a safe passage path for the air flow, reduce the resistance of the heating part 210 to the air flow, and prevent the resistance of the heating part 210 from causing the fluid speed to drop too fast, thereby ensuring the air outlet speed of the fluid, which is conducive to ensuring The heating efficiency of the heater.
  • the preset distance may be 2 mm to 10 mm, and may be selectively applied according to the heating area of the heating part 210 and the size of the housing. Alternatively, it may be 2 mm, 3 mm, 4 mm, etc.
  • the support frame includes a plurality of support plates 300 .
  • the plurality of support plates 300 are spaced along the circumferential direction of the housing 100 on the inner wall 120 of the airflow chamber 110 .
  • the support plates 300 are used from The radially outward direction of the housing 100 supports the heating part 210 to support and fix the heating part 210 , and the support plate 300 is conducive to improving the stability of the heating part 210 .
  • the support plate 300 is a plate-like structure arranged in the air flow chamber 110 and extends along the air flow chamber. One end of the support plate 300 is fixed on the inner wall 120 of the air flow chamber 110, and the other end is used to support and fix the heating part 210. A heating area for the fluid in the heater has been created.
  • the support plate 300 includes a support portion 310 , and the crest of the heating wire 211 is wound around the support portion 310 to improve the stability of the support heating portion 210 .
  • the support portion 310 is provided with a plurality of fixing grooves 311 , the plurality of fixing grooves 311 are spaced apart along the axial direction, and the crest of the heating wire 211 is wound around the fixing grooves 311 , thereby preventing the heating wire 211 from moving along the axial direction. , to avoid local overheating or overcooling, which is beneficial to improving the uniformity of heating.
  • the distance between the plurality of fixing grooves 311 is the same.
  • the fixing groove 311 may be a rectangular groove or a zigzag-shaped groove.
  • the zigzag-shaped groove can enable the heating wires 211 of different thicknesses to be clamped in the fixing groove 311, preventing the heating wire 211 from moving due to the action, and the stability of the heating wire 211 is better.
  • the heating wire 211 and the support plate 300 have an interference fit, which is equivalent to "stuck" the heating wire 211. onto the support plate 300, which can improve the fixing strength of the heating wire 211.
  • the diameter of the support part 310 is set correspondingly to the size of the heating part 210, so as to facilitate fixing each heating part 210, which can be understood as a support plate.
  • the support part 310 on the 300 is also stepped along the gas flow direction, so that there is no need to change the structure of the heating part 210 or the heating wire.
  • the heating part 210 or the heating wire of the same structure is wound to the stepped support plate 300, so that The heating part 210 or the heating wire is arranged in a stepped manner, which improves the assembly efficiency of the heater.
  • the support plate 300 is made of mica sheets.
  • the mica sheets have insulation and low-loss thermal resistance functions, which is beneficial to improving the utilization rate of the heat of the heating wire 211.
  • the heater also includes at least one limiting plate 400.
  • the limiting plate 400 can be disposed between two adjacent support plates 300, and the limiting plate 400 is used to remove the The outer diameter of the heating part 210 fixes the heating part 210 so that the limiting plate 400 and the supporting plate 300 cooperate with each other to fix the displacement of the heating part 210 in the radial direction and prevent the heating part 210 from moving in the radial direction.
  • the limiting plate 400 can be configured with a limiting portion, and the heating wire can pass through the limiting portion to block the heating wire from moving toward the outer wall of the airflow chamber (or the housing 100 ), so that the limiting plate 400 and the support When the plates 300 cooperate with each other, the heating part or the heating wire can be fixed.
  • the limiting part can be a limiting through hole.
  • each limiting plate 400 has a limiting through hole.
  • the limiting part can be a limiting through hole.
  • the through hole is a long hole, which can ensure that all heating parts extending along the gas flow direction pass through the limiting through hole; in another embodiment, the number of limiting through holes can correspond to the number of heating parts, so that different limits
  • the position of the positioning through holes on the limiting plate 400 can also be different (for example, like the heating part, different limiting through holes are also arranged in a stepped manner on the limiting plate), so that each heating part can be independently controlled. Limiting position improves the stability of the entire heater and reduces air flow noise.
  • the material of the limiting plate 400 can also be mica sheets, which has the same effect as the supporting plate 300. Same, no more details here.
  • the heater also includes a pressure reducing component 500 disposed at the upstream end of the air flow.
  • the voltage reducing component 500 is disposed on the support, and the voltage reducing component 500 has a greater resistance relative to the heating wire 211, so as to facilitate Control the motor to achieve protection.
  • the heater also includes a thermostat disposed at the upstream end of the heating wire 211, and the thermostat can regulate the temperature. At the same time, a fuse is provided on the downstream section of the heating wire 211 to protect the hair dryer.
  • the heating mechanism provided in this embodiment is suitable for installation in a blower device (not shown) and is electrically connected to the control mechanism of the blower device.
  • the heating mechanism is used to heat the air flow in the blowing device so that the blowing device can blow out hot air.
  • the hair drying device can be used in hair drying scenarios, or in local drying or heating scenarios in laboratories, physiotherapy rooms, industrial production, art, etc. Specifically, it can be a hair dryer, a dryer, or a heater. This application does not specifically limit the types and application scenarios of the blowing device.
  • the control mechanism is suitable for controlling the heating mechanism to stop or run.
  • the control mechanism can be a single chip microcomputer or a control circuit, etc. It is a conventional setting and will not be described in detail here.
  • the heating mechanism of this embodiment includes a support member 5 disposed in the air flow channel of the blower and a heating member 2 disposed on the support member 5 .
  • the heating element 2 is suitable for heating the air flow in the air flow channel.
  • the heating element 2 includes a heating wire winding 21 and a voltage-reducing wire winding 22 that are coaxially spaced on the support member 5 .
  • the heating wire winding 21 is arranged around the outside of the voltage-reducing wire winding 22 . Setting the step-down wire winding 22 can achieve The voltage dividing function prevents the heating element 2 from burning due to excessive voltage, thereby improving the safety of the heating mechanism and extending its service life.
  • the heating wire winding 21 and the voltage-reducing wire winding 22 are energized and generate heat at the same time to heat the air flowing through, thereby improving the heating efficiency.
  • the heating wire winding 21 is arranged outside the voltage-reducing wire winding 22, so that the heating wire winding 21 and the voltage-reducing wire winding 22 are compact in structure, making full use of the space and reducing the space occupancy rate of the heating element 2 to ensure heating. efficiency while reducing the size of the heating mechanism.
  • the heating wire winding 21 and the pressure-reducing wire winding 22 are coaxially spaced, so that the heating effect is the same everywhere in the heating element 2, and the temperature of the heated air flow is more uniform, thereby improving the heating effect and user experience.
  • both the heating wire winding 21 and the voltage-reducing wire winding 22 have a wavy structure to increase the contact area between the heating wire winding 21 and the voltage-reducing wire winding 22 and the airflow flowing in the airflow channel, thereby improving heating efficiency.
  • the heating wire winding 21 and the voltage-reducing wire winding 22 are multi-turn coils wound on the support member 5.
  • the coils are metal wires, and the metal wires generate heat using the thermal effect principle of electric current.
  • the principle of the thermal effect of current is: when the current passes through the metal wire, due to the resistance of the metal wire itself, the current does work and consumes electrical energy, generating heat.
  • the heat generated by the energization of the metal wire is emitted in the form of thermal conduction to heat the airflow flowing through.
  • Using metal wires to energize and generate heat to heat the airflow is an existing technology and will not be described in detail here.
  • the support member 5 is disposed in the air flow channel of the blower, and the heating member 2 is disposed on the support member 5 to heat the air flow flowing through the air flow channel.
  • the support 5 includes an inner cylinder 51 and an outer cylinder 52 arranged coaxially and spaced apart, so that the heating mechanism has a cylindrical structure as a whole.
  • a heating cavity 53 is formed between the inner cylinder 51 and the outer cylinder 52. Both the wire winding 21 and the voltage-reducing wire winding 22 are located in the heating cavity 53 .
  • the support member 5 can also be provided with other structures, such as a fixed frame with a cross-shaped structure in cross section, which are not listed here.
  • a fixing plate for fixing the heating wire winding 21 and the voltage-reducing wire winding 22 may be provided between the inner cylinder 51 and the outer cylinder 52 .
  • a number of fixed long plates 6 and fixed short plates 7 arranged at equal intervals can be provided between the inner cylinder 51 and the outer cylinder 52.
  • Each fixed long plate 6 is connected to the inner surface of the support 5 in a radial direction.
  • one end of each fixed short plate 7 is fixed on the inner cylinder 51, and the other end is suspended between the inner cylinder 51 and the outer cylinder 52.
  • the heating wire winding 21 is wound on the fixed long plate 6 in the circumferential direction
  • the voltage reducing wire winding 22 is wound on the fixed short plate 7 in the circumferential direction.
  • a plurality of first through holes 61 are provided on the side of the fixed long plate 6 connected to the outer cylinder 52, a number of second through holes 63 are provided on the side connected to the inner cylinder 51, a plurality of first through holes 61 and a plurality of first through holes 61.
  • the second through holes 63 are all arranged at equal intervals along the axial direction of the outer cylinder 52 , and the multi-turn coils of the heating wire winding 21 pass through a plurality of the first through holes 61 in a one-to-one manner.
  • the fixed short plate 7 has a fixed end (not numbered) fixed to the inner cylinder 51 and a suspended end (not numbered) suspended in the heating chamber 53.
  • a number of fixing grooves 71 are formed on the suspended end, and a number of fixing grooves 71 are formed along the outer
  • the barrel 52 is arranged at equal intervals in the axial direction, and a plurality of fixing grooves 71 and a plurality of second through holes 63 are arranged one-to-one.
  • the multi-turn coils of the buck wire winding 22 pass through the plurality of second through holes 63 and a plurality of second through holes 63 in a one-to-one manner.
  • Fixing groove 71 It should be noted that the axial direction of the outer cylinder 52 is as shown by arrow a in FIG. 7 .
  • the heating wire winding 21 and the voltage reducing wire winding 22 are respectively fixed in the first through hole 61 and the fixing groove 71 to limit the heating wire winding 21 and the voltage reducing wire winding 22 in the heating cavity 53 along the outer cylinder 52 axial movement, thereby improving structural stability.
  • the heating mechanism is provided with at least two overheat protection pieces 4 .
  • At least two overheat protection members 4 are respectively provided at both ends of the support member 5 and are suitable for monitoring the air flow temperature upstream and downstream of the heating member 2 respectively.
  • overheating protection parts respectively arranged upstream and downstream of the heating element, when the temperature of one of the upstream and downstream ends is abnormal, the heating mechanism can be protected in a timely manner and the safety of the heating mechanism can be improved.
  • Placing the overheating protection element downstream of the heating element means that the overheating protection element can sense the airflow temperature downstream of the heating element.
  • the downstream airflow is usually the hottest part of the airflow flowing through the heating element.
  • the overheating protection element downstream of the heating element can more effectively monitor the thermal peaks of the heating element and ensure the effectiveness of temperature monitoring of the heating element.
  • the airflow entering the heating element may be attached with dust, hair, etc., causing dust, hair, etc. to accumulate upstream of the heating element, thereby generating hot spots upstream of the heating element.
  • the overheating protection member 4 can be at least partially disposed on the support member 5 along a first direction perpendicular to the flow direction of the airflow to increase the contact area between the overheating protection member 4 and the airflow, thereby further improving detection accuracy.
  • the end of the fixed long plate 6 may be provided with a slot 62 , and the slot 62 is suitable for clamping the overheat protection member 4 to fix the overheat protection member 4 on the support member 5 .
  • This application does not specifically limit the relative positions of the two overheating protection members 4, as long as the two overheating protection members 4 are located at both ends of the support member 5 to be suitable for monitoring the airflow temperature upstream and downstream of the heating member 2 respectively.
  • the overheat protection component 4 can be a fuse, and the fuse and the heating component 2 are arranged in series. The fuse blows when the air flow temperature value is greater than the protection threshold, and the heating element 2 stops running.
  • the fuse contains a fuse element, which forms a part of the circuit.
  • the fuse When the air flow temperature is greater than the protection threshold, that is, exceeds the melting temperature of the fuse element, the fuse will melt, open the circuit and cut off the power to the heating element 2 , so that the heating element 2 can be disconnected and stopped in time to avoid safety accidents caused by continued heating of the heating element 2.
  • the structure and working principle of the fuse are well known to those skilled in the art and will not be discussed in detail here.
  • the overheating protection element 4 can be configured as a temperature sensor. When the air flow temperature value monitored by the temperature sensor is greater than the protection threshold, the control mechanism controls the heating element 2 to stop operating.
  • the heating mechanism is electrically connected to the control mechanism of the blower device, and the control mechanism controls the heating mechanism.
  • Thermal mechanism stops or runs.
  • the overheat protection element 4 is set as a temperature sensor to monitor the upstream and downstream airflow temperatures of the heating element 2. When the monitored airflow temperature value is greater than the protection threshold, a signal is sent to the control mechanism, and the control mechanism controls the heating element 2 to stop operating based on the signal.
  • a temperature sensor is a sensor that senses temperature and converts it into a usable output signal. According to the measurement method, it can be divided into two categories: contact type and non-contact type. According to the characteristics of sensor materials and electronic components, it can be divided into two categories: thermal resistance and thermocouple. This embodiment does not specifically limit the type of temperature sensor, which can be selected based on design requirements.
  • the above-mentioned protection threshold is the maximum temperature value that the heating mechanism can withstand.
  • the protection threshold is set according to the type and application scenario of the blowing device, and is not limited in this application.
  • the protection threshold corresponding to the upstream and downstream overheating protection components 4 is determined based on the disconnection triggering temperature of the heating component 2 .
  • the upstream airflow temperature and the downstream airflow temperature when the heating element needs to be controlled to be turned off can be obtained, the protection threshold value of the thermal protection element 4 set upstream is determined based on the obtained upstream airflow temperature data, and the protection threshold value set at the thermal protection element 4 is determined based on the obtained downstream airflow temperature data.
  • the protection threshold of the downstream thermal protection element 4. By setting the protection thresholds of the thermal protection elements 4 arranged upstream and downstream respectively in the above manner, the triggering mechanisms for the upstream and downstream thermal protection elements 4 to disconnect the heating element 2 can be consistent.
  • the heating mechanism also includes a flow guide 8.
  • the flow guide 8 is disposed at the upstream port (not numbered) of the inner cylinder 51 of the support member 5 and protrudes outward along the axis of the inner cylinder 51 to achieve a flow guide effect and increase the amount of water entering the heating chamber 33 airflow.
  • the shape of the air guide 8 that protrudes outward along the axial direction of the inner cylinder 51 is preferably an arc shape, forming an arc-shaped air guide surface so that the airflow can flow into the heating cavity 33 evenly and stably.
  • the shape of the flow guide 8 that protrudes outward along the axial direction of the inner cylinder 51 can also be configured in other shapes, such as conical, rectangular, etc., which can be adjusted according to design requirements, and examples are not given here.
  • Ventilation hole 81 is used to allow some fluid to enter the inner cylinder 51, and flows out from the downstream port (not numbered) of the inner cylinder 51.
  • the ventilation holes 81 can also be used to accommodate the passage of part of the circuits of the heating mechanism to protect the circuits and at the same time make the overall structure of the heating mechanism more compact and concise.
  • This embodiment provides a blowing device, which includes a casing, a control mechanism disposed in the casing, and a heating mechanism for heating the air flow.
  • the structure of the heating mechanism is the same as or similar to the structure of the heating mechanism of the aforementioned Embodiment 2.
  • the control mechanism uses a single-chip microcomputer or an existing control program, etc. It is a conventional setting and will not be described in detail here.
  • the blowing device is a hair dryer as an example for description.
  • the casing has an air inlet and an air outlet, and the air inlet and the air outlet are connected to form an airflow channel.
  • the heating mechanism is arranged in the air supply channel and is electrically connected to the control mechanism. External air enters through the air inlet, is heated by the heating mechanism, and then blown out from the air outlet.
  • the hair dryer In order to allow outside air to enter through the air inlet, the hair dryer is provided with an air flow generator for generating air flow, and the air flow generator is electrically connected to the control mechanism.
  • the air flow generator includes a negative pressure unit adapted to generate negative pressure.
  • the negative pressure unit generates negative pressure, causing external air to form an airflow and enter the airflow channel of the hair dryer.
  • the negative pressure unit can be a fan, which is an integrated device that drives a motor and a fan blade.
  • the negative pressure unit can also be provided separately for the drive motor and the fan blades, and the fan blades are arranged on the output shaft of the drive motor, etc.
  • the driving motor may be an AC induction motor, a series-excited AC-DC motor, or a DC motor, etc. This application does not limit the type of the driving motor.
  • the blower device provided in this embodiment can more effectively prevent the temperature of the heating element from being too high, causing the temperature of the blown air flow to be too high, or the shell of the blower device to be overheated, thereby scalding the user.
  • Households or objects to be dried can also avoid overheating and damage to the internal components of the blower device due to hot spots inside the heating mechanism, and even cause safety accidents, making it safer.
  • the heating component 600 includes a mounting barrel 601, a first heating element 602, a second heating element 603 and a temperature control detection structure 604.
  • the mounting barrel 601 It is arranged in a cylindrical shape with both ends open, and an air supply channel is formed on the inner ring side.
  • the air flow can flow from the open end of the installation barrel 601 to the direction of the other open end;
  • the first heating element 602 is provided in the installation barrel 601 , used to heat the air flow flowing through the air supply channel, so that the cold air flow forms a hot air flow after flowing through the installation tube 601 and is blown out for use by the user;
  • at least part of the second heating element 603 is located at the entrance of the air supply channel position, so that at least part of the area located in the middle of the installation barrel 601 forms the heating area of the second heating element 603.
  • the second heating element 603 can cause the airflow to be heated by the second heating element 603 at the entrance of the air supply channel before entering the air supply channel.
  • the first heating element 602 and the second heating element 3 can be jointly heated. Multiple heating elements can effectively reduce the cold air area in the installation tube 601, making the heating effect better and the temperature of the air flow more uniform; and the air flow temperature will be more uniform.
  • the temperature control detection structure 604 is disposed in the air supply channel and is located behind the second heating element 603 along the airflow direction, so that the temperature control detection structure 604 can be located in the heating area of the second heating element 603, and the airflow passes through the second heating element 603. After the first heating element 602 and the second heating element 603 are heated together, the temperature distribution of the air flow in the installation barrel 601 is more uniform, so the detection results of the temperature control detection structure 604 are also more reliable, and the heating component 600 can be better protected.
  • the first heating element 602 can be set shorter to still ensure the heating effect of the air flow.
  • the volume of the heating component 600 can be set smaller to meet the needs of miniaturized products.
  • the first heating element 602 may include a first heating wire 621 , and the first heating wire 621 may be in a closed or non-closed ring shape, a square or an irregular shape, and is surrounded on the inside of the installation barrel 601 .
  • a fever The cross section of the wire 621 may be in a continuous arc shape, multiple intermittent arc shapes, or a continuous circular ring shape.
  • the first heating wire 621 can be arranged in a continuous full circle to match the shape of the inner wall of the installation barrel 601, so that the first heating wire 621 is distributed more evenly throughout the inner side of the installation barrel 601. , so that the heating effect is more uniform.
  • the first heating wire 621 can be wound by a continuous metal wire.
  • the first heating wire 621 is spirally coiled on the inside of the inner wall of the installation barrel 601 to generate more uniform heat.
  • the first heating wire 621 can be installed on the inside of the installation tube 601 by pasting.
  • the first heating element 602 may further include a bracket structure 622 through which the first heating element 602 can be installed on the inside of the installation barrel 601 to facilitate installation and maintenance.
  • the second heating element 603 includes a second heating wire 631, and the second heating wire 631 is provided at the mouth of one end of the installation barrel 601, and The mouth of the cylinder is the entry end of the airflow, so that the airflow can be heated for the first time by the second heating wire 631 at the entrance of the installation cylinder 601, and then enter the installation cylinder 601, and be heated again by the first heating element 602, obviously increasing the temperature. Faster.
  • the second heating element 603 can be disposed in the middle of the mouth of the installation barrel 601.
  • the first heating element 602 surrounds the inner wall of the installation barrel 601 in a ring shape, it is close to the inner side wall of the installation barrel 601.
  • the air flow temperature is relatively high, and the second heating element 603 can heat the air flow in the middle of the installation barrel 601, thereby making the air flow temperature everywhere inside the installation barrel 601 more uniform and the air outlet effect better.
  • the second heating wire 631 can be directly installed on the installation barrel 601 .
  • the second heating wire 631 can also be installed on the above-mentioned bracket structure 622.
  • the first heating wire 621 and the second heating wire 631 can be installed on the bracket first. After the structure 622 is installed, the whole body is installed in the installation tube 601, making assembly more convenient.
  • each second heating wire 631 extends along the radial direction of the installation barrel 601 so as to be evenly distributed at the mouth of the installation barrel 601 .
  • the partition 6221 is extended in the radial direction, and both radial ends of the partition 6221 along the radial installation barrel 601 are connected to the installation barrel 601 to form an interference fit or snap connection with the installation barrel 601.
  • the first heating element 602 is annular. It is arranged and penetrated on the partition 6221, so that the spiral-shaped first heating wires 621 can be evenly spaced in the installation barrel 601, so that the heating effect is better.
  • the second heating element 603 is located at the end of the partition 6221, and a mounting protrusion can be provided at the end of the partition 6221.
  • the second heating element 603 can be wound around the circumference of the mounting protrusion to be fixed on the On the partition 6221.
  • multiple partitions 6221 may be provided.
  • the multiple partitions 6221 divide the inside of the installation tube 601 into multiple areas, so that the airflow is guided from one end to the other end along the partitions 6221, so that the flow rate of the airflow is higher. high.
  • the temperature control detection structure 604 is mainly used to monitor the temperature in the installation barrel 601 to prevent the temperature in the installation barrel 601 from being too high and to protect the heating component 600 in a timely manner.
  • the temperature control detection structure 604 includes a first detection component 641.
  • the first detection component 641 is provided in the installation barrel 601, and is located at opposite ends of the installation barrel 601 with the second heating component 603 respectively.
  • the air flow temperature at the air outlet end of the installation tube 601 is the highest. By arranging the first detection component 641 at the air outlet end of the installation tube 601, the maximum temperature can be better detected and adjusted in a timely manner.
  • the first detection component 641 may be an NTC (Negative Temperature Coefficient, negative temperature coefficient thermistor).
  • the heating component 600 may also include a controller. By electrically connecting the first detection component 641 to the controller, when the first detection component 641 is electrically connected to the controller, When the temperature detected by the detection component 641 exceeds the preset value, the controller can control the heating component 600 to power off according to the detection result of the first detection component 641 to perform power-off protection to prevent the temperature of the heating component 600 from being too high and damaging the shell of the product. There is damage to the body or other structures.
  • the preset temperature X needs to satisfy a1<b1<X<c1.
  • the temperature control detection structure 604 also includes a second detection part 642 and a third detection part 643.
  • the second detection part 642 and the third detection part 643 are located between the first detection part 641 and the above-mentioned third detection part.
  • the second detection member 642 and the third detection member 643 are arranged in sequence, that is, in the direction from the entrance of the installation barrel 601 toward the outlet of the installation barrel 601, in sequence.
  • a second heating element 603, a third detection element 643, a second detection element 642 and a first detection element 641 are arranged.
  • the critical detection temperature of the first detection element 641 is smaller than the critical detection temperature of the second detection element 642.
  • the critical detection temperature of the detection member 642 is smaller than the critical detection temperature of the third detection member 643 .
  • monitoring can continue through the second detection part 642 and the third detection part 643 to ensure the accuracy and reliability of temperature supervision.
  • the second detection part 642 can be set as a temperature controller, and the third detection part 643 can be set as a fuse, wherein the normal operating temperature of the NTC is set to a2, and the reheating temperature after shutdown is set to b2. , the temperature during the air blockage test is c2, then the preset temperature Y of the power-off protection of the second detection component 642 needs to satisfy a2<b2<Y<c2. Set the normal operating temperature of the fuse to a3, the return temperature after shutdown to b3, and the temperature during the air blockage test to c3.
  • the preset temperature Z of the fuse power-off protection needs to satisfy a3<b3<Z<c3 .
  • the NTC takes effect first.
  • the thermostat plays a protective role.
  • the fuse plays a protective role. Multiple protection mechanisms. This makes the protection of the heating component 600 more reliable.
  • the first detection part 641 , the second detection part 642 and the third detection part 643 are all provided in the middle of the installation tube 601 , and are all installed on the partition plate 6221 .
  • an installation groove is provided in the middle of the partition 6221, and the second detection part 642 and the third detection part 643 are installed in the installation groove.
  • the first detection part 641 is located at the end of the partition 6221, and the second heating part
  • the member 603 may be at least partially opposite to the first detection member 641, the second detection member 642, and the third detection member 643, so that the first detection member 641, the second detection member 642, and the third detection member 643 can all be located in the hot air zone, so that the detection results at the first detection part 641, the second detection part 642 and the third detection part 643 are more accurate and the protection mechanism is more complete and reliable.
  • the NTC, thermostat and fuse are arranged in the same position as in the present invention, but the traditional heating component 600 does not have a second heating element. 603, so that the NTC, thermostat and fuse are located in the middle of the installation barrel 601.
  • the temperature of the thermostat is about 30 degrees and the temperature of the fuse is about 80 degrees; when it is shut down and restored to temperature, the temperature of the temperature control The temperature at the thermostat is about 90 degrees, and the fuse temperature is about 120 degrees; during the air blockage test, the temperature at the thermostat is about 50 degrees, and the fuse temperature is about 100 degrees.
  • the temperature control detection structure 604 cannot provide protection.
  • the detected temperature at the thermostat is about 90 degrees, and the temperature at the fuse is about 100 degrees; when it is shut down and restored to temperature, the temperature at the thermostat is about 90 degrees. 120 degrees, the fuse temperature is about 150 degrees; during the air blockage test, the thermostat is about 130-140 degrees, and the fuse temperature is about 180-190 degrees. Set the thermostat protection value to 135 degrees and the fuse protection value to 184 degrees. At this time, the material melting temperature has not been reached and the protection mechanism requirements can be met, thereby effectively protecting the heating component 600 .
  • the above is only a test experiment provided as an example, and does not limit the specific working temperature of the heating component 600.
  • the specific temperature control temperature can be set according to the actual product.
  • the home appliance product may be a hair dryer, a curling iron, etc.
  • the home appliance product includes the above-mentioned heating component 600 and an air flow generating device.
  • the air flow generating device may be an axial flow fan or a centrifugal fan.
  • the air flow The air outlet end of the generating device is connected to the installation barrel 601 of the heating component 600.
  • One end of the heating component 600 is provided with the second heating element 603 and is placed close to the air flow generating device, so that the air flow generated by the air flow generating device can pass through the second heating element 603.
  • One end enters the air supply channel of the installation tube 601, and passes After the airflow is heated together by the first heating element 602 and the second heating element 603, the hot air is sent out from the other end of the installation barrel 601 for use by the user.
  • the temperature distribution of the airflow in the installation barrel 601 is more uniform.
  • the first heating element 602 can be set shorter while still ensuring the heating of the airflow.
  • the volume of the heating component 600 can be set smaller, so that the size of the home appliance can be smaller, which can better meet the needs of miniaturized products.

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Abstract

本发明涉及护发技术领域，尤其涉及一种加热器及护发设备。该加热器包括壳体和加热组件。其中，壳体设有沿壳体的轴线方向延伸的气流腔，加热组件设置在气流腔中，沿气体流通方向，加热组件设有多个加热部，且多个加热部的外径沿气体流通方向逐一增大，从而使位于气流下游加热部的加热面积增大，可以进一步保护下游端的加热部，同时使得加热器内部气流腔内的气体能被充分加热，提高加热效率，进而提高吹风机烘干头发的效率。该护发设备能够有利于提高干发的效率。

Description

加热器及护发设备
本公开要求如下专利申请的优先权：于2022年8月26日提交中国专利局、申请号为202222261401.5、发明名称为“加热器及吹风机”的中国专利申请；于2022年8月3日提交中国专利局、申请号为202222038978.X、发明名称为“加热机构及吹风装置”的中国专利申请，于2022年7月6日提交中国专利局、申请号为202221855582.8、发明名称为“发热组件及家电产品”的中国专利申请，上述专利申请的全部内容通过引用结合在本公开中。
技术领域
本发明涉及吹风机技术领域，尤其涉及一种加热器及吹风机。
背景技术
吹风机作为生活中的必需品，吹风机一般都有对空气加热的加热器，从而能够提高干发的效率。
现有技术中，加热器包括沿轴线方向平行且间隔设置的多组加热丝，且沿气体流通方向，加热丝的尺寸固定，即沿气体流通方向，加热丝加热范围相同，这样会导致上游端已经加热的流体进一步加热下游端的加热丝，从而导致下游端的加热丝过热发红，影响吹风机使用的安全性。
为解决上述问题，亟待提供一种加热器及吹风机，解决上述问题。
发明内容
本发明的一个目的是提出一种加热器，能够保护加热器中的加热丝，进而提高配置该加热器的吹风机使用的安全性。
本发明的另一个目的是提出一种吹风机，通过上述加热器，以达提高干发的效率的效果。
为达此目的，本发明采用以下技术方案：
一种加热器，包括：
壳体，所述壳体设有沿所述壳体的轴线方向延伸的气流腔；以及
加热组件，设置在所述气流腔中，沿气体流通方向，所述加热组件设有多个加热部，且多个所述加热部的外径沿气体流通方向逐一增大。
作为一种可选方案，沿所述气体流通方向，多个所述加热部的内径逐一增大。
作为一种可选方案，位于所述气体流通的上游的所述加热部沿气体流通方向的延伸长度不小于位于所述气体流通的下游的所述加热部沿气体流通方向的延伸长度。
作为一种可选方案，所述加热器包括支撑架，所述支撑架设置在气流腔内部；每个所述加热部包括：
至少一个加热丝，至少一个所述加热丝在所述气流腔中以波浪状缠绕在所述支撑架上。
作为一种可选方案，多个所述加热部的内径与所述气流腔的内壁之间距离不低于预设距离。
作为一种可选方案，所述支撑架包括：
多个支撑板，多个所述支撑板沿所述壳体的周向间隔设置在所述气流腔的内壁上，所述支撑板被配置为从所述壳体的径向向外的方向支撑所述加热部。
作为一种可选方案，所述支撑板包括：
支撑部，所述支撑部上开设有多个固定槽，多个所述固定槽沿所述轴线方向间隔设置，所述加热丝的波峰绕设在所述固定槽上。
作为一种可选方案，所述支撑部为多个，且沿所述气体流通方向，所述支撑部的直径与所述加热部的尺寸相应设置。
作为一种可选方案，所述支撑板的材质为云母片。
作为一种可选方案，所述加热器还包括：
至少一个限位板，所述限位板设置在相邻的两个所述支撑板之间，且所述限位板被配置为从所述加热部的外径固定所述加热部。
一种吹风机，包括如上所述的加热器。
本发明的有益效果为：
本发明提供一种加热器，该加热器包括壳体和加热组件。其中，壳体设有沿壳体的轴线方向延伸的气流腔，加热组件设置在气流腔中，沿气体流通方向，加热组件设有多个加热部，且多个加热部的外径沿气体流通方向逐一增大，从而使的下游加热部和上游加热部错位设置，进而避免上游的加热流体直接加热下游的加热部，提高了加热器使用的安全性，同时也使得位于气流下游加热部的加热面积增大，使得加热器内部气流腔内的气体能被充分加热，提高加热效率，进而提高吹风机烘干头发的效率。
本发明还提供一种吹风机，通过上述加热器，有利于提高吹风机干发的效率。
随着生活水平的不断提高，各种家用电器进入了人们的生活中，特别是用于烘干的吹风装置，例如吹风机、烘干机的出现，可以实现快速干燥的效果，大大便利了人们的日常生活。
吹风装置一般包括壳体、设置在壳体内的负压机构和加热机构，负压机构适于产生气流，以使气流流经形成在壳体内的气流通道，加热机构则设置在气流通道内对气流进行加热。但加热机构的温度逐渐升高到较高温度后，温度会传递至壳体上，容易烫伤用户或待干燥物，甚至引发火灾。
本发明提供的加热机构及吹风装置，可以同时监测加热机构进风端与出风端的温度，降低安全事故发生的概率。
本发明提供加热机构，适于安装于吹风装置内，所述加热机构包括：
支撑件，设置于所述吹风装置的气流通道内；
加热件，设置于所述支撑件上，适于对所述气流通道内的气流进行加热；以及
过热保护件，设置有至少两个，至少两个所述过热保护件分别设置于所述支撑件的两端，适于对所述加热件上下游的气流温度分别进行监测。
优选地，上述过热保护件至少部分沿第一方向设置于所述支撑件上，所述第一方向与所述气流的流动方向垂直。
优选地，上述过热保护件为熔断器，所述熔断器与所述加热件串联设置；
所述熔断器在气流温度值大于保护阈值时熔断，所述加热件停止运行。
优选地，上述过热保护件为温度传感器；所述加热机构与所述吹风装置的控制机构电性连接；
所述温度传感器监测所得的气流温度值大于保护阈值时，所述控制机构控制所述加热件停止运行。
优选地，上述加热机构还包括导流件，所述导流件设置在所述支撑件的内筒的上游端口处，并沿所述内筒的轴线方向向外凸起。
优选地，上述导流件沿所述内筒的轴线方向向外凸起的形状为圆弧形。
优选地，上述导流件上开设有若干通风孔。
优选地，上述加热件包括同轴间隔设置在所述支撑件上的加热丝绕组和降压丝绕组，所述加热丝绕组围设在所述降压丝绕组外侧；所述加热丝绕组和降压丝绕组均呈波浪状结构。
优选地，上述支撑件包括若干等间距间隔设置的固定长板及固定短板，每个所述固定长板及固定短板于径向连接于所述支撑件的内筒与外筒之间，所述固定短板的一端固定在所述内筒上，另一端悬置在所述内筒与外筒之间；
所述加热丝绕组于圆周方向上缠绕在所述固定长板上；所述降压丝绕组于圆周方向上缠绕在所述固定短板上。
本发明还提供吹风装置，包括：
机壳，具有进风口和出风口，所述进风口和所述出风口连通以形成气流通道；
控制机构，设置在所述机壳内；以及
加热机构，设置在所述气流通道内，且与所述控制机构电性连接；
其中，所述加热机构为如上述任一项所述的加热机构。
本发明提供的加热机构，通过在支撑件的两端分别设置过热保护件，监测加热件上下游的气流温度，可以在加热件上下游的气流温度之一出现异常时，及时对加热机构进行保护。同时，利用布设在上游的过热保护件，还可以更加及时地监测到因气流内的灰尘、毛发等堆积在上游所产生的热点，进一步提高加热机构内的热尖峰被及时监测到的概率，进而降低安全事故发生的概率。
本发明提供的吹风装置，通过设置本申请的加热机构，由于该加热机构可以更加及时地监测加热件上下游的气流温度，与现有技术相比，该吹风装置可以更加有效地避免因加热件温度过高，导致吹出的气流温度过高，或吹风装置的壳体过热，从而烫伤用户或待烘干物，同时也可以避免因加热机构内部产生热点，导致的吹风装置内部元件过热损坏，甚至引发安全事故，安全性更高。
传统的家电产品，如吹风机、卷发棒等，通过设于壳体内的发热丝对流经 壳体内的气流进行加热，然后吹出热风供用户使用。但传统的家电产品的发热丝一般呈环状盘设于壳体内，靠近发热丝处的气流温度较高，而位于发热丝中部的气流温度则较低，使得吹出的气流温度不均匀，而且，温控检测装置一般设于加热丝的中部，这样会使得检测温度与发热丝的实际温度相差较大，而起不到温控保护作用。
因此，本发明所要解决的技术问题是传统的家电产品的加热不均匀，而且同时使得家电产品的温控检测结果不准确，无法有效保护家电产品。
为解决上述技术问题，本发明提供一种发热组件，包括：
安装筒，其内环侧形成送风通道；
第一发热件，设于所述安装筒内，用于对流经所述送风通道内的气流加热；
第二发热件，至少部分位于所述送风通道的入口处；
温控检测结构，设于所述送风通道内，且位于所述第二发热件沿气流流动方向的后侧。
可选地，上述的发热组件，所述第一发热件包括第一发热丝，所述第一发热丝围设于所述安装筒的内侧。
可选地，上述的发热组件，所述第二发热件包括第二发热丝，所述第二发热丝设于所述安装筒的一端筒口处。
可选地，上述的发热组件，所述第一发热件还包括支架结构，所述支架结构设于所述安装筒内，所述第一发热件、所述温控检测结构均安装于所述支架结构上。
可选地，上述的发热组件，所述支架结构包括隔板，所述隔板沿所述安装筒的径向延伸设置，所述隔板沿径向的两端均与所述安装筒相连接，所述第一发热件呈环状设置，以穿设于所述隔板上。
可选地，上述的发热组件，所述隔板设有多个，多个所述隔板将所述安装筒的内侧分隔成多个区域。
可选地，上述的发热组件，所述第二发热件设于所述隔板的端部。
可选地，上述的发热组件，所述温控检测结构包括第一检测件，所述第一检测件设于所述安装筒内。
可选地，上述的发热组件，所述温控检测结构还包括第二检测件和第三检测件，所述第二检测件和所述第三检测件均设于所述安装筒内；
其中，所述第一检测件的临界检测温度小于所述第二检测件的临界检测温度，所述第二检测件的临界检测温度小于所述第三检测件的临界检测温度。
本发明还提供一种家电产品，包括：
所述的发热组件；以及，
气流发生装置，所述气流发生装置的出风端与所述发热组件的安装筒连通，且所述发热组件设有所述第二发热件的一端靠近所述气流发生装置设置。
本发明提供的技术方案，具有以下优点：
本发明提供的发热组件，包括有安装筒、第一发热件、第二发热件及温控检测结构，通过安装筒内的第一发热件，对流经安装筒内的气流进行加热；通过将第二发热件设于送风通道的入口处，使得气流在送风通道的入口处先经第二发热件进行加热，进入送风通道后可再经第一发热件和第二发热件区同进行加热，多个加热件，可有效减少安装筒内的冷风区，使得加热效果更好，气流的温度更均匀；而且温控检测结构位于第二发热件沿气流流动方向的后侧，使得温控检测结构可位于第二发热件的加热区内，且气流在经第一发热件和第二发热件共同加热后，气流在安装筒内的温度分布更均匀，因此温控检测结构检测出的结果也更可靠，可更好地对发热组件进行保护。而且，在保证发热丝同 样功率的前提下，第一发热件可设置更短，仍能保证气流的加热效果，同时，发热组件的体积可设置更小，以满足小型化产品的需求。
附图说明
为了更清楚地说明本发明实施例中的技术方案，下面将对本发明实施例描述中所需要使用的附图作简单的介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据本发明实施例的内容和这些附图获得其他的附图。
图1是本发明实施例提供的加热器的结构示意图一；
图2是本发明实施例提供的加热器的结构示意图二；
图3是本发明实施例提供的支撑板的结构示意图；
图4是本发明实施例提供的加热器的结构示意图三；
图5是本发明实施例提供的加热器中加热部的一个结构示意图。
图6为本发明实施例2加热机构的结构示意图；
图7为图6所示的加热机构的另一视角的结构示意图；
图8为图6所示的内筒、固定长板和固定短板装配后的结构示意图。
图9为本发明提供的一种发热组件的一实施例的结构示意图；
图10为图9中所述发热组件的另一视角的结构示意图；
图11为图9中所述发热组件的分解结构示意图。
图中标记如下：
100-壳体；110-气流腔；120-内壁；130-外壁；
200-加热组件；210-加热部；210a-第一加热部；210b-第二加热部；211-加
热丝；
300-支撑板；310-支撑部；311-固定槽；
400-限位板；
500-降压组件。
2-加热件；21-加热丝绕组；22-降压丝绕组；4-过热保护件；5-支撑件；51-
内筒；52-外筒；53-加热腔；6-固定长板；61-第一通孔；62-卡槽；63-第二通孔；7-固定短板；71-固定槽；8-导流件；81-通风孔。
600-发热组件；601-安装筒；602-第一发热件；621-第一发热丝；622-支架
结构；6221-隔板；603-第二发热件；631-第二发热丝；604-温控检测结构；641-第一检测件；642-第二检测件；643-第三检测件。
具体实施方式
下面结合附图和实施例对本发明作进一步的详细说明。可以理解的是，此处所描述的具体实施例仅仅用于解释本发明，而非对本发明的限定。另外还需要说明的是，为了便于描述，附图中仅示出了与本发明相关的部分结构而非全结构。
在本发明的描述中，除非另有明确的规定和限定，术语“相连”、“连接”、“固定”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内结构的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
在本发明中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不 是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本实施例的描述中，术语“上”、“下”、“左”、“右”等方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述和简化操作，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅仅用于在描述上加以区分，并没有特殊的含义。
实施例1
吹风机作为生活中的必需品，吹风机一般都有对空气加热的加热器，从而能够提高干发的效率。本实施例提供一种吹风机，该吹风机包括加热器，以实现加热空气的效果。
该吹风机还包括壳体和驱动组件，驱动组件和加热器电连接，且驱动组件和加热器同时设置在壳体中。驱动组件通电后，能够驱动加热器加热气体。更具体地，壳体包括进风口和出风口，驱动组件可以为驱动件和风扇，风扇设置在驱动件的输出端，且风扇设置在进风口处，加热器位于风扇远离进风口的一端。吹风机工作时，利用驱动件驱动风扇转动，将壳体外部气体从进风口吸入，并将气体吹向加热器，然后再将经过加热器加热的气体从出风口吹出，从而形成热气流吹出。该结构加热效率高。且驱动件输出的转速可调，使风扇具有不同的转速，进而有利于调节热气流的风速，以便于用户可以根据需求选择相应的风速。
现有技术中，沿气体流通方向，加热器的尺寸固定，即沿气体流通方向，加热器的加热范围相同，这样会导致上游端已经加热的流体进一步加热下游端的加热丝，从而导致下游端的加热丝过热发红，同时使加热器的加热面积有限，加热效率低。
如图1～图3所示，本实施例提供一种加热器，该加热器包括壳体100和加热组件200。其中，壳体100为桶状结构，且包括内壁120和外壁130，在内壁120和外壁130之间设有沿壳体100的轴线方向延伸的气流腔110，以便于导通气流。加热组件200设置在气流腔110中，沿气体流通方向，加热组件200设有多个加热部210，且多个加热部210外径沿气体流通方向逐一增大，从而使的下游加热部和上游加热部错位设置，进而避免上游的加热流体直接加热下游的加热部，提高了加热器使用的安全性，同时也使得位于气流下游加热部210的加热面积增大，扩大加热器整体的加热范围，使得加热器内部气流腔110内的流体能被充分加热，提高加热效率。通过上述加热器，吹风机能够提高干发的效率。
示例性地，如图5所示，本实施例中的加热部210为两个，分别为第一加热部210a和第二加热部210b，第一加热部210a和第二加热部210b的外径成具有一个台阶的阶梯状，且沿气流流通方向，第一加热部210a所在圆截面的直径大于第二加热部210b所在圆截面的直径，这样可以实现增加加热器的加热面积。当然，在其他实施例中，加热部210也可以为三个、四个或者五个，甚至更多，加热部210越多，在多个加热部210的外径形成更多台阶的阶梯状，使加热部210加热面积逐渐增加。
在一些其他实施例中，多个加热部210的轴线截面可以为梯形状，其中下游端的梯形宽度可以大于上游端的梯形宽度，梯形的设计可以实现加热器加热 面积的逐渐增加，提高了加热的效果和能力。进一步地，由于现有的加热器都是利用加热部对空气进行加热，空气温度持续加热达到高温时，会对加热部起到一定的反作用，从而导致加热部过热发红，带来一定的安全隐患。为了解决这一问题，沿气体流通方向，多个加热部210的内径逐一增大，从而沿气体流通方向，多个加热部210的内径和外径形成阶梯形状，避免加热部210集中到相同径向高度，避免上游端加热的流体也会进一步的加热下游端的加热部210，导致下游端的加热部210出现过热发红的问题，有利于提高加热部210的安全系数，进而提高用户使用吹风机的安全性。
与此同时，位于气体流通的上游的加热部210沿气体流通方向的延伸长度不大于位于气体流通的下游的加热部210沿气体流通方向的延伸长度，从而减少上游热气流的热量，避免上游热气经过过度加热导致下游端的加热部210出现过热发红的问题，有利于提高加热部210的安全系数，进而提高用户使用吹风机的安全性。
在一些其他实施例中，位于气体流通的上游的加热部210沿气体流通方向的延伸长度不小于位于气体流通的下游的加热部210沿气体流通方向的延伸长度，从而在上游端具有更多的密集排布的加热部210，提高了对初入加热器的气体的快速加热能力，从而可以保证加热效果，提高用户体验。
具体地，如图1和图2所示，加热器包括支撑架，支撑架设置在气流腔110内部，每个加热部210包括至少一个加热丝211，至少一个加热丝211沿在气流腔110中以波浪状缠绕在支撑架上，从而利用简单加热丝211结构增加加热面积。进一步地，加热丝211波峰和波谷之间的高度一致，使得在不同位置的加热丝211都有相同的加热能力，避免出现局部加热不均的情况。
可选地，多个加热部210的内径与气流腔110的内壁120之间的距离不低 于预设距离，以便于为气流提供安全的通过路径，减少加热部210对气流的阻力，且可以避免加热部210的阻力使流体速度下降过快，进而保证流体的出风速度，有利于保证加热器的加热效率。示例性地，预设距离可以为2mm～10mm，可以根据加热部210的加热面积以及壳体的尺寸选择性适用，作为可选地，可以为2mm，3mm，4mm等。
进一步地，如图3和图4所示，支撑架包括多个支撑板300，多个支撑板300沿壳体100的周向间隔设置在气流腔110的内壁120上，支撑板300用于从壳体100的径向向外的方向支撑加热部210，以便于支撑并固定加热部210，且该支撑板300有利于提高加热部210的稳定性。
可以理解为，支撑板300为板状结构设置在气流腔110中，并沿着气流腔延伸，支撑板300的一端固定在气流腔110的内壁120，另一端则用于支撑固定加热部210，已形成加热器中对流体的加热区域。
现结合图3和图4对支撑板300的细节结构进行说明。
如图3和图4所示，支撑板300包括支撑部310，加热丝211的波峰绕设在支撑部310上，以便于提高支撑加热部210的稳定性。更具体地，支撑部310上开设有多个固定槽311，多个固定槽311沿轴线方向间隔设置，且加热丝211的波峰绕设在固定槽311上，从而避免加热丝211沿轴线方向移动，避免造成局部过热或过冷，有利于提高加热的均匀性。
可以理解的是，为了保证多个加热丝211之间间距一致，以提高加热的均匀性，多个固定槽311之间的距离相同。示例性地，固定槽311可以是矩形的凹槽或者锯齿形状的凹槽。其中，锯齿形状的凹槽能够使不同粗细的加热丝211均卡固在固定槽311中，避免加热丝211作用移动，其加热丝211的稳定性更好。
优选地，加热丝211与支撑板300为过盈配合，相当于将加热丝211“卡” 到支撑板300上，这样可以提高加热丝211固定的强度。
与加热部210相对应地，支撑部310为多个，且沿气体流通方向，支撑部310的直径与加热部210的尺寸相应设置，以便于固定每一个加热部210，可以理解为，支撑板300上的支撑部310沿着气体流通方向也是成阶梯状的，这样无需改变加热部210或加热丝的自身结构，相同结构的加热部210或加热丝缠绕到呈阶梯状的支撑板300，这样就呈现出加热部210或加热丝的阶梯状排布，提高了加热器的装配效率。
可选地，支撑板300的材质为云母片，云母片有绝缘及低损失的热阻功能，有利于提高加热丝211热量的利用率。
如图4所示，作为一种可选方案，加热器还包括至少一个限位板400，限位板400可以设置在相邻的两个支撑板300之间，且限位板400用于从加热部210的外径固定加热部210，以便于限位板400与支撑板300相互配合，固定加热部210沿径向方向的位移，避免加热部210沿径向方向移动。可以理解的是，限位板400可以配置有限位部，加热丝可以穿过该限位部，以阻挡加热丝向气流腔的的外壁(或壳体100)移动，这样限位板400和支撑板300相互配合，就能实现对加热部或加热丝的固定，作为可选地，位限位部可以为限位通孔，比如每个限位板400有一个限位通孔，此时限位通孔为长孔，这样可以保证沿气体流通方向延伸的全部加热部均通过该限位通孔；在另一实施例中，限位通孔的数量可以和加热部的数量对应，这样不同限位通孔在限位板400上的位置也可以不同(比如与加热部一样，不同限位通孔在限位板上也呈阶梯状排布)，这样就可以实现对每个加热部的独立限位，提高了整个加热器的稳定性，降低气流噪声。
进一步地，限位板400的材料也可以选用云母片，其效果与支撑板300相 同，这里不再赘述。
请继续参见图4，此外，该加热器还包括设置在气流上游端的降压组件500，降压组件500设置在支撑件上，且降压组件500相对加热丝211具有更大的电阻，以便于调控电机，实现保护作用。
进一步地，加热器还包括设置在加热丝211的上游端的温控器，温控器能够调控温度。同时，在加热丝211的下游段设置有熔断器，以便于保护吹风机。
注意，以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施方式的限制，上述实施方式和说明书中描述的只是说明本发明的原理，在不脱离本发明精神和范围的前提下，本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明范围内，本发明的要求保护范围由所附的权利要求书及其等效物界定。
实施例2
请参见图6至图8，本实施例提供的加热机构适于安装于吹风装置(未图示)内，且与吹风装置的控制机构电性连接。该加热机构用于加热吹风装置内的气流以使吹风装置可以吹出热风。该吹风装置可以应用于干发场景，或者，实验室、理疗室及工业生产、美工等方面做局部干燥或加热的场景，具体可以为吹风机，亦或者烘干机，亦或者暖风机。本申请不对吹风装置的种类及应用场景做具体限定。其中，控制机构适于控制加热机构停止或运行，控制机构可以为单片机或者控制电路等，为常规设置，在此不做赘述。
本实施例的加热机构包括设置于吹风装置的气流通道内的支撑件5和设置在支撑件5上的加热件2。加热件2适于对气流通道内的气流进行加热。
具体的，加热件2包括同轴间隔设置在支撑件5上的加热丝绕组21和降压丝绕组22，加热丝绕组21围设在降压丝绕组22外侧。设置降压丝绕组22可以起到 分压作用，避免电压过大导致加热件2烧坏，以提高加热机构的使用安全性，延长使用寿命。在使用时，加热丝绕组21和降压丝绕组22通电同时发热以加热流经的气流，从而提高加热效率。
呈上述，将加热丝绕组21围设在降压丝绕组22外侧，使得加热丝绕组21和降压丝绕组22结构紧凑，充分利用了空间，降低加热件2的空间占用率，以在保证加热效率的同时降低加热机构的体积。加热丝绕组21和降压丝绕组22同轴间隔设置，使得加热件2各处的加热效果相同，加热后的气流温度更加均匀，以提高加热效果和用户使用体验感。
为了进一步提高加热丝绕组21和降压丝绕组22的加热效率。在本实施例中，加热丝绕组21和降压丝绕组22均呈波浪状结构，以增加加热丝绕组21和降压丝绕组22与气流通道内流经气流的接触面积，从而提高加热效率。
需要说明的是，该加热丝绕组21和降压丝绕组22为缠绕在支撑件5上的多匝线圈，该线圈为金属丝，金属丝利用电流的热效应原理发热。电流的热效应原理为：当电流通过金属丝时，由于金属丝自身的电阻，电流做功而消耗电能，产生了热量，由金属丝通电产生的热量以热传导的形式散出以加热流经的气流。利用金属丝通电发热对气流进行加热为现有技术，在此不做赘述。
由前述可知，支撑件5设置在吹风装置的气流通道内，且加热件2设置在支撑件5上以对流经气流通道的气流进行加热。在本实施例中，该支撑件5包括同轴间隔设置的内筒51和外筒52，以使加热机构整体呈圆柱状结构，内筒51与外筒52之间形成有加热腔53，加热丝绕组21和降压丝绕组22均位于该加热腔53内。在使用时，外部空气流入加热腔53内，经过加热丝绕组21和降压丝绕组22加热后流出该加热腔53。在其他实施例中，该支撑件5也可设置为其他结构，具体如横截面呈十字形结构的固定架，在此不一一举例。
内筒51与外筒52之间可以设置有用于固定加热丝绕组21和降压丝绕组22的固定板。参见图6至8，内筒51与外筒52之间可以设置有若干等间距间隔设置的固定长板6及固定短板7，每个固定长板6于径向连接于支撑件5的内筒51与外筒52之间，每个固定短板7的一端固定在内筒51上，另一端悬置在内筒51与外筒52之间。加热丝绕组21于圆周方向上缠绕在固定长板6上，降压丝绕组22于圆周方向上缠绕在固定短板7上。
具体的，固定长板6与外筒52连接的一侧上开设有若干第一通孔61，与内筒51连接的一侧开设有若干第二通孔63，若干第一通孔61和若干第二通孔63均沿外筒52的轴线方向等间距排布，加热丝绕组21的多匝线圈呈一对一穿过若干第一通孔61。固定短板7具有与内筒51固定的固定端(未标号)和悬置在加热腔53内的悬空端(未标号)，该悬空端上形成有若干固定槽71，若干固定槽71沿外筒52的轴线方向等间距排布，若干固定槽71与若干第二通孔63呈一对一设置，降压丝绕组22的多匝线圈呈一对一穿过若干第二通孔63和若干固定槽71。需要说明的是，外筒52的轴线方向如图7中的箭头a所示。
通过上述结构，将加热丝绕组21和降压丝绕组22分别固定在第一通孔61和固定槽71内，以限制加热丝绕组21和降压丝绕组22于加热腔53内沿外筒52的轴线方向移动，从而提高结构稳定性。同时可以避免加热丝绕组21的若干线圈以及降压丝绕组22的若干线圈之间相互接触，从而影响加热机构的加热效率。
该加热机构设置有至少两个过热保护件4。至少两个过热保护件4分别设置于支撑件5的两端，适于对加热件2上下游的气流温度分别进行监测。利用分别布设在加热件上游及下游的过热保护件，可以在上游、下游的其中一端温度出现异常时，及时对加热机构进行保护，提高加热机构的使用安全性。将过热保护件设置在加热件的下游，意味着过热保护件可以感测加热件下游的气流温度， 下游气流通常是流经加热件的气流中最热的部分，因此，将过热保护件设置在加热件的下游，可以更加有效地监测加热件的热尖峰，保证对加热件温度监测的有效性。实践中，进入加热件的气流可能会附着灰尘、毛发等，导致加热件的上游容易出现灰尘、毛发等的积累，从而在加热件上游产生热点，通过在加热件的上游设置过热保护件，可以及时监测加热件上游出现的热尖峰，及时对加热机构进行保护，进一步提高加热机构的使用安全性。
过热保护件4可以至少部分沿第一方向设置于支撑件5上，第一方向与气流的流动方向垂直，以增大过热保护件4与气流的接触面积，从而进一步提高检测精准性。
在本实施例中，固定长板6的端部可以开设有卡槽62，该卡槽62适于卡持过热保护件4，以将过热保护件4固定在支撑件5上。本申请不对两个过热保护件4的相对位置做具体限定，其满足两个过热保护件4分别位于支撑件5的两端以适于对加热件2上下游的气流温度分别进行监测即可。
在一可选的实施方案中，该过热保护件4可以为熔断器，熔断器与加热件2串联设置。熔断器在气流温度值大于保护阈值时熔断，加热件2停止运行。
具体的，熔断器包含熔丝元件，其形成到电路的一部分，当气流温度大于保护阈值时，即超过熔丝元件的熔化温度，熔断器将熔化，断开电路并且切断到加热件2的电力，以使加热件2及时断开停止运行，避免加热件2继续加热造成安全事故。熔断器的结构及工作原理均为本领域技术人员所熟知的，在此不详细展开。
在另一可选的实施方案中，该过热保护件4可以设置为温度传感器。温度传感器监测所得的气流温度值大于保护阈值时，控制机构控制加热件2停止运行。
由前述可知，加热机构与吹风装置的控制机构电性连接，控制机构控制加 热机构的停止或运行。将过热保护件4设置为温度传感器以监测加热件2的上下游气流温度，当监测到的气流温度值大于保护阈值时，发送信号至控制机构，控制机构根据该信号控制加热件2停止运行。
温度传感器是指能感受温度并转换成可用输出信号的传感器。按测量方式可分为接触式和非接触式两大类，按照传感器材料及电子元件特性分为热电阻和热电偶两类。本实施例不对温度传感器的种类做具体限定，可结合设计需求进行选择。
需要说明的是，上述的保护阈值为加热机构可承受的最大温度值，该保护阈值根据吹风装置的种类及应用场景设置，本申请对此不做限定。例如，上下游过热保护件4对应的保护阈值根据加热件2断开触发温度确定。如可以获取需控制加热件断开时的上游气流温度和下游气流温度，根据获取的上游气流温度数据确定设置在上游的热保护件4的保护阈值、以及根据获取的下游气流温度数据确定设置在下游的热保护件4的保护阈值。通过上述方式分别设置布设在上游、下游的热保护元件4的保护阈值，可以使得上游、下游的热保护元件4对加热件2断开的触发机制保持一致。
为了避免被加热件2加热后的气流温度过高以对位于加热件2下游的部件造成损坏，加热机构还包括导流件8。具体的，导流件8设置在支撑件5的内筒51的上游端口(未标号)处，并沿内筒51的轴线方向向外凸起，以达到导流效果，增加进入加热腔33的气流。该导流件8沿内筒51的轴线方向向外凸起的形状优选为圆弧形，形成弧形导风面，以便于气流均匀稳定地流入加热腔33。该导流件8沿内筒51的轴线方向向外凸起的形状也可设置为其他形状，具体如锥形、矩形等，可结合设计需求进行调整，在此不一一举例。
导流件8上还可以开设有若干通风孔81。通风孔81用于使部分流体进入内筒 51内，并自内筒51的下游端口(未标号)流出。通过设置通风孔81，可以使得部分未加热的流体通过内筒51，达到对内筒51散热的效果，防止加热机构内部过热。通风孔81还可以用于容纳加热机构的部分线路通过，以对线路起到保护作用，同时使得加热机构的整体结构更加紧凑、简洁。
实施例3
本实施例提供吹风装置，该吹风装置包括机壳、设置在机壳内的控制机构和用以加热气流的加热机构。其中，加热机构的结构与前述实施例2的加热机构的结构相同或相似，具体可参见前述实施例2。控制机构采用单片机或现有控制程序等，为常规设置，在此不做赘述。在本实施例中，以吹风装置为吹风机为例进行说明。
具体的，机壳具有进风口和出风口，进风口和出风口连通以形成气流通道。加热机构设置在给气流通道内，且与控制机构电性连接。外部空气自进风口进入，经加热机构加热后自出风口吹出。
为了使外部空气可以自进风口进入，吹风机内设置有用以产生气流的气流发生器，该气流发生器与控制机构电性连接。该气流发生器包括适于产生负压的负压单元。负压单元产生负压，使外部空气形成气流进入吹风机的气流通道内。
具体的，负压单元可为风机，该风机为驱动电机和扇叶的集成设置。或者，该负压单元也可为驱动电机和扇叶单独设置，扇叶设置在驱动电机的输出轴上等。驱动电机可以是交流感应电机、串激式交直两用电机、或者是直流电机等，本申请不对驱动电机的类型作限定。
基于上述加热机构，本实施例提供的吹风装置可以更加有效地避免因加热件温度过高，导致吹出的气流温度过高，或吹风装置的壳体过热，从而烫伤用 户或待烘干物，同时也可以避免因加热机构内部产生热点，导致的吹风装置内部元件过热损坏，甚至引发安全事故，安全性更高。
实施例4
本实施例提供一种发热组件600，结合图9和图10所示，该发热组件600包括有安装筒601、第一发热件602、第二发热件603及温控检测结构604，安装筒601呈两端敞口的筒状设置，其内环侧形成送风通道，气流可自安装筒601的一端敞口处朝向另一端敞口的方向流动；第一发热件602设于安装筒601内，用于对流经送风通道内的气流进行加热，从而使得冷气流在流经安装筒601后，形成热气流吹出，以供用户使用；第二发热件603的至少部分位于送风通道的入口处，使得安装筒601内位于中部的至少部分区域形成第二发热件603的加热区，第二发热件603可使得气流在送风通道的入口处先经第二发热件603进行加热，进入送风通道后可再经第一发热件602和第二发热3共同进行加热，多个加热件，可有效减少安装筒601内的冷风区，使得加热效果更好，气流的温度更均匀；而且将温控检测结构604设于送风通道内，且位于第二发热件603沿气流流动方向的后侧，使得温控检测结构604可位于第二发热件603的加热区内，且气流在经第一发热件602和第二发热件603共同加热后，气流在安装筒601内的温度分布更均匀，因此温控检测结构604检测出的结果也更可靠，可更好地对发热组件600进行保护。而且，在保证发热丝同样功率的前提下，第一发热件602可设置更短，仍能保证气流的加热效果，同时，发热组件600的体积可设置更小，以满足小型化产品的需求。
其中，如图9所示，第一发热件602可包括第一发热丝621，第一发热丝621可呈闭合或非闭合环状、方形或不规则形状围设于安装筒601的内侧，第一发热 丝621的横截面可呈连续的弧状、或多个间断的弧状、还或是连续的圆环状设置。优选地，第一发热丝621可呈连续的整圈的环状设置，以与安装筒601的内侧壁的形状相适配，使得安装筒601内侧各处的第一发热丝621的分布更均匀，从而加热效果更均匀。第一发热丝621可由一整根连续的金属丝绕制而成，第一发热丝621呈螺旋状盘设于安装筒601的内侧壁的内侧，发热更均匀。
其中，在一实施方式中，第一发热丝621可通过粘贴的方式安装于安装筒601的内侧。
在另一实施方式中，第一发热件602可还包括有支架结构622，第一发热件602可通过该支架结构622安装于安装筒601的内侧，以更便于安装和维护。
对于第二发热件603而言，类似地，如图9和图10所示，第二发热件603包括有第二发热丝631，第二发热丝631设于安装筒601的一端筒口处，且该筒口为气流的进入端，使得气流在安装筒601的入口处可先经第二发热丝631进行第一次加热后，再进入安装筒601内，通过第一发热件602再次加热，显然升温更快。而且，优选地，可将第二发热件603设置于安装筒601的筒口的中部，当第一发热件602呈环状围于安装筒601的内侧壁时，靠近安装筒601的内侧壁周侧的气流温度较高，通过第二发热件603可对安装筒601中部的气流进行加热，从而可使得安装筒601内侧各处的气流温度更均匀，出风效果更好。
在一实施方式中，第二发热丝631可直接安装于安装筒601上。
在另一实施方式中，如图10所示，第二发热丝631也可安装于上述的支架结构622上，在组装时，可先将第一发热丝621和第二发热丝631安装于支架结构622上后，再将整体安装于安装筒601内，组装更方便。
第二发热丝631可设置有多个，各第二发热丝631沿安装筒601的径向延伸设置，以均匀布设于安装筒601的筒口处。
对于支架结构622而言，为便于第一发热丝621和第二发热丝631的安装，结合图10和图11所示，支架结构622包括有隔板6221，各隔板6221沿安装筒601的径向延伸设置，且隔板6221沿径安装筒601的径向的两端均与安装筒601相连接，以与安装筒601呈过盈配合或卡接连接，第一发热件602呈环状设置，并穿设于隔板6221上，使得呈螺旋状的第一发热丝621可间隔均匀的布设于安装筒601内，从而加热效果更好。
优选地，第二发热件603位于隔板6221的端部，在隔板6221的端部还可设置有安装凸起，第二发热件603可绕设于安装凸起的周侧，以固定于隔板6221上。
而且，隔板6221可设置有多个，多个隔板6221将安装筒601的内侧分隔成多个区域，使得气流沿着隔板6221从一端朝向另一端的方向导向，使得气流的的流速更高。
对于温控检测结构604而言，主要用于对安装筒601内的温度进行监控，避免安装筒601内温度过高，以及时对发热组件600进行保护。其中，温控检测结构604包括有第一检测件641，第一检测件641设于安装筒601内，且与上述第二发热件603分别位于安装筒601呈相对的两端。安装筒601的出风端的气流温度最高，将第一检测件641设于安装筒601的出风端，可更好地检测出最高温度，以及时进行调节。
具体地，第一检测件641可为NTC(Negative Temperature Coefficient，负温度系数热敏电阻)，发热组件600还可包括有控制器，通过将第一检测件641与控制器电连接，当第一检测件641检测到的温度超过预设值时，控制器可根据第一检测件641的检测结果控制发热组件600断电，以进行断电保护，避免发热组件600温度过高，对产品的壳体或其他结构有损害。设定NTC的正常工作温度为a1，停机后的回温温度为b1，进行堵风测试时的温度为c1，则NTC断电保护的 预设温度X需满足a1&lt；b1&lt；X&lt；c1。
进一步地，如图11所示，温控检测结构604还包括有第二检测件642和第三检测件643，第二检测件642和第三检测件643位于第一检测件641和上述的第二发热件603之间，且在沿安装筒601的轴向上，第二检测件642和第三检测件643依次设置，即在沿安装筒601的入口朝向安装筒601的出口的方向，依次布设有第二发热件603、第三检测件643、第二检测件642及第一检测件641，其中，第一检测件641的临界检测温度小于第二检测件642的临界检测温度，第二检测件642的临界检测温度小于第三检测件643的临界检测温度。当第一检测件641检测失效时，可继续通过第二检测件642和第三检测件643进行监控，以保证温度监管的准确性和可靠性。
优选地，所述第二检测件642可设置为温控器，所述第三检测件643可设置为熔断丝，其中，设定NTC的正常工作温度为a2，停机后的回温温度为b2，进行堵风测试时的温度为c2，则第二检测件642的断电保护的预设温度Y需满足a2&lt；b2&lt；Y&lt；c2。设定熔断丝的正常工作温度为a3，停机后的回温温度为b3，进行堵风测试时的温度为c3，则熔断丝断电保护的预设温度Z需满足a3&lt；b3&lt；Z&lt；c3。发热组件600在工作的过程中，首先起作用的为NTC，当NTC失效时，温控器起到保护作用，当NTC、温控器均失效时，熔断丝起到保护作用，多重保护机制，使得发热组件600的保护更可靠。
而且，上述第一检测件641、第二检测件642及第三检测件643均设于安装筒601的中部，且均安装于上述隔板6221上。具体地，在隔板6221的中部设有安装槽，所述第二检测件642和第三检测件643安装于安装槽内，第一检测件641位于隔板6221的端部，且第二发热件603可至少部分与第一检测件641、第二检测件642及第三检测件643相对，使得第一检测件641、第二检测件642及第三检测件 643可均位于热风区内，从而使得第一检测件641、第二检测件642及第三检测件643处的检测结果更精准，保护机制更完善可靠。
在一检测实验中，传统的家电产品中的发热组件600在正常工作时，NTC、温控器和熔断丝的设置位置与本发明中一致，但传统的发热组件600中没有设置第二发热件603，使得NTC、温控器和熔断丝均位于安装筒601的中部，传统的发热组件600正常工作时，温控器处约30度，熔断丝温度约80度；停机回温时，温控器处约90度，熔断丝温度约120度；堵风测试时，温控器处约50度，熔断丝温度约100度，虽然没有达到熔断预设温度，而此时发热组件600的周侧的壳体或部件的材料已经融化，显然温控检测结构604处的温度与实际温度相差甚大，检测结果并不准确，因此温控检测结构604起不到保护作用。
而通过本实施例提供的发热组件600测试时，发热组件600在正常工作时，温控器处的检测温度约90度，熔断丝处温度约100度；停机回温时，温控器处约120度，熔断丝温度约150度；堵风测试时，温控器处约130-140度，熔断丝温度约180-190度。设定温控器保护值135度，熔断丝保护值184度，此时未达到材料融化的温度，可以达到保护机制要求，从而有效保护发热组件600。
上述仅为举例提供的一检测实验，并不对发热组件600的具体工作温度进行限制，具体温控温度可根据实际产品进行设定。
实施例5
本实施例提供一种家电产品，该家电产品可为吹风机、卷发棒等，该家电产品包括有上述的发热组件600、及气流发生装置，该气流发生装置可为轴流风机或离心风机，气流发生装置的出风端与发热组件600的安装筒601连通，发热组件600设有第二发热件603的一端靠近该气流发生装置设置，使得通过气流发生装置产生的气流可经第二发热件603的一端进入安装筒601的送风通道内，通 过第一发热件602和第二发热件603共同对气流进行加热后，从安装筒601的另一端将热风送出，用于供用户使用。气流在安装筒601内的温度分布更均匀，而且，在保证发热丝同样功率的前提下，由于设置有第二发热件603，第一发热件602可设置更短，且仍能保证气流的加热效果，同时，发热组件600的体积可设置更小，使得家电产品的尺寸可更小，更能满足小型化产品的需求。
显然，上述所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下，可以做出其它不同形式的变化或变动，都应当属于本发明保护的范围。

Claims (30)

  1. 一种加热器，其特征在于，包括：
    壳体(100)，所述壳体(100)设有沿所述壳体(100)的轴线方向延伸的气流腔(110)；以及
    加热组件(200)，设置在所述气流腔(110)中，沿气体流通方向，所述加热组件(200)设有多个加热部(210)，且多个所述加热部(210)的外径沿气体流通方向逐一增大。
  2. 根据权利要求1所述的加热器，其特征在于，沿所述气体流通方向，多个所述加热部(210)的内径逐一增大。
  3. 根据权利要求1所述的加热器，其特征在于，位于所述气体流通的上游的所述加热部(210)沿气体流通方向的延伸长度不小于位于所述气体流通的下游的所述加热部(210)沿气体流通方向的延伸长度。
  4. 根据权利要求1所述的加热器，其特征在于，所述加热器包括支撑架，所述支撑架设置在气流腔内部；每个所述加热部(210)包括：
    至少一个加热丝(211)，至少一个所述加热丝(211)在所述气流腔(110)中以波浪状缠绕在所述支撑架上。
  5. 根据权利要求1所述的加热器，其特征在于，多个所述加热部(210)的内径与所述气流腔(110)的内壁(120)之间距离不低于预设距离。
  6. 根据权利要求4所述的加热器，其特征在于，所述支撑架包括：
    多个支撑板(300)，多个所述支撑板(300)在所述气流腔(110)的内壁(120)上周向间隔设置，所述支撑板(300)远离理所述内壁(120)的一侧被配置为支撑所述加热部(210)。
  7. 根据权利要求6所述的加热器，其特征在于，所述支撑板(300)包括：
    支撑部(310)，所述支撑部(310)上开设有多个固定槽(311)，多个所 述固定槽(311)沿所述轴线方向间隔设置，所述加热丝(211)的波峰绕设在所述固定槽(311)上。
  8. 根据权利要求7所述的加热器，其特征在于，所述支撑部(310)为多个，且沿所述气体流通方向，所述支撑部(310)的直径与所述加热部(210)的尺寸相应设置。
  9. 根据权利要求6所述的加热器，其特征在于，所述加热器还包括：
    至少一个限位板(400)，所述限位板(400)设置在相邻的两个所述支撑板(300)之间，且所述限位板(400)被配置为从所述加热部(210)的外径固定所述加热部(210)。
  10. 一种吹风机，其特征在于，包括如权利要求1～9任一项所述的加热器。
  11. 一种加热机构，适于安装于吹风装置内，其特征在于，所述加热机构包括：
    支撑件，设置于所述吹风装置的气流通道内；
    加热件，设置于所述支撑件上，适于对所述气流通道内的气流进行加热；以及
    过热保护件，设置有至少两个，至少两个所述过热保护件分别设置于所述支撑件的两端，适于对所述加热件上下游的气流温度分别进行监测。
  12. 如权利要求11所述的加热机构，其特征在于，所述过热保护件至少部分沿第一方向设置于所述支撑件上，所述第一方向与所述气流的流动方向垂直。
  13. 如权利要求11所述的加热装置，其特征在于，所述过热保护件为熔断器，所述熔断器与所述加热件串联设置；
    所述熔断器在气流温度值大于保护阈值时熔断，所述加热件停止运行。
  14. 如权利要求11所述的加热装置，其特征在于，所述过热保护件为温度 传感器；所述加热机构与所述吹风装置的控制机构电性连接；
    所述温度传感器监测所得的气流温度值大于保护阈值时，所述控制机构控制所述加热件停止运行。
  15. 如权利要求11所述的加热机构，其特征在于，所述加热机构还包括导流件，所述导流件设置在所述支撑件的内筒的上游端口处，并沿所述内筒的轴线方向向外凸起。
  16. 如权利要求15所述的加热机构，其特征在于，所述导流件沿所述内筒的轴线方向向外凸起的形状为圆弧形。
  17. 如权利要求15所述的加热机构，其特征在于，所述导流件上开设有若干通风孔。
  18. 如权利要求11所述的加热机构，其特征在于，所述加热件包括同轴间隔设置在所述支撑件上的加热丝绕组和降压丝绕组，所述加热丝绕组围设在所述降压丝绕组外侧；所述加热丝绕组和降压丝绕组均呈波浪状结构。
  19. 如权利要求18所述的加热机构，其特征在于，所述支撑件包括若干等间距间隔设置的固定长板及固定短板，每个所述固定长板于径向连接于所述支撑件的内筒与外筒之间，每个所述固定短板的一端固定在所述内筒上，另一端悬置在所述内筒与外筒之间；
    所述加热丝绕组于圆周方向上缠绕在所述固定长板上；所述降压丝绕组于圆周方向上缠绕在所述固定短板上。
  20. 一种吹风装置，其特征在于，包括：
    机壳，具有进风口和出风口，所述进风口和所述出风口连通以形成气流通道；
    控制机构，设置在所述机壳内；以及
    加热机构，设置在所述气流通道内，且与所述控制机构电性连接；
    其中，所述加热机构为如权利要求11至19中任一项所述的加热机构。
  21. 一种发热组件，其特征在于，包括：安装筒，其内环侧形成送风通道；第一发热件，设于所述安装筒内，用于对流经所述送风通道内的气流加热；第二发热件，至少部分位于所述送风通道的入口处；温控检测结构，设于所述送风通道内，且位于所述第二发热件沿气流流动方向的后侧。
  22. 如权利要求21所述的发热组件，其特征在于，所述第一发热件包括第一发热丝，所述第一发热丝围设于所述安装筒的内侧。
  23. 如权利要求21所述的发热组件，其特征在于，所述第二发热件包括第二发热丝，所述第二发热丝设于所述安装筒的一端筒口处。
  24. 如权利要求21-23任一项所述的发热组件，其特征在于，所述第一发热件还包括支架结构，所述支架结构设于所述安装筒内，所述第一发热件、所述温控检测结构均安装于所述支架结构上。
  25. 如权利要求24所述的发热组件，其特征在于，所述支架结构包括隔板，所述隔板沿所述安装筒的径向延伸设置，所述隔板沿径向的两端均与所述安装筒相连接，所述第一发热件呈环状设置，以穿设于所述隔板上。
  26. 如权利要求25所述的发热组件，其特征在于，所述隔板设有多个，多个所述隔板将所述安装筒的内侧分隔成多个区域。
  27. 如权利要求25所述的发热组件，其特征在于，所述第二发热件设于所述隔板的端部。
  28. 如权利要求21所述的发热组件，其特征在于，所述温控检测结构包括第一检测件，所述第一检测件设于所述安装筒内。
  29. 如权利要求28所述的发热组件，其特征在于，所述温控检测结构还包括 第二检测件和第三检测件，所述第二检测件和所述第三检测件均设于所述安装筒内；其中，所述第一检测件的临界检测温度小于所述第二检测件的临界检测温度，所述第二检测件的临界检测温度小于所述第三检测件的临界检测温度。
  30. 一种家电产品，其特征在于，包括：如权利要求21至29中任意一项所述的发热组件；以及，气流发生装置，所述气流发生装置的出风端与所述发热组件的安装筒连通，且所述发热组件设有所述第二发热件的一端靠近所述气流发生装置设置。
PCT/CN2023/087768 2022-07-06 2023-04-12 加热器及护发设备 Ceased WO2024007658A1 (zh)

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CN202222038978.XU CN217986898U (zh) 2022-08-03 2022-08-03 加热机构及吹风装置
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