CN218500180U

CN218500180U - Heater and hair drier

Info

Publication number: CN218500180U
Application number: CN202222261401.5U
Authority: CN
Inventors: 金星; 熊杰; 俞浩
Original assignee: Dreame Technology Suzhou Co ltd
Current assignee: Dreame Technology Suzhou Co ltd
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-02-21
Anticipated expiration: 2032-08-26

Abstract

The utility model relates to a hair-dryer technical field especially relates to a heater and hair-dryer. The heater includes a housing and a heating assembly. Wherein, the casing is equipped with the air current chamber that extends along the axis direction of casing, heating element sets up in the air current chamber, along the gas flow direction, heating element is equipped with a plurality of heating portions, and the external diameter of a plurality of heating portions increases one by one along the gas flow direction, thereby the messenger lies in the increase of the heating area of air current low reaches heating portion, can further protect the heating portion of low reaches end, make the gas in the inside air current intracavity of heater fully heated simultaneously, improve heating efficiency, and then improve the efficiency that the hair-dryer dried the hair. The hair drier can be beneficial to improving the hair drying efficiency.

Description

Heater and hair-dryer

Technical Field

The utility model relates to a hair-dryer technical field especially relates to a heater and hair-dryer.

Background

The hair dryer is a necessity in life, and generally has a heater for heating air, so that the hair drying efficiency can be improved.

In the prior art, the heater includes the multiunit heater strip that sets up along the axis direction parallel and interval, and along the gas flow direction, the size of heater strip is fixed, follows the gas flow direction promptly, and heater strip heating range is the same, can lead to the fluid that the upper reaches end has heated further to heat the heater strip of low reaches end like this to lead to the heater strip of low reaches end to overheat and redden, influence the security that the hair-dryer used.

In order to solve the above problems, it is desirable to provide a heater and a blower to solve the above problems.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a heater can protect the heater strip in the heater, and then improves the security that the hair-dryer that disposes this heater used.

Another object of the present invention is to provide a hair dryer, which can improve the efficiency of hair drying by the above heater.

To achieve the purpose, the utility model adopts the following technical proposal:

a heater, comprising:

the air flow control device comprises a shell, a control unit and a control unit, wherein the shell is provided with an air flow cavity extending along the axial direction of the shell; and

the heating assembly is arranged in the airflow cavity and is provided with a plurality of heating parts along the gas circulation direction, and the outer diameters of the plurality of heating parts are gradually increased along the gas circulation direction.

Alternatively, the inner diameters of the plurality of heating portions are increased one by one in the gas flow direction.

As an alternative, an extension length of the heating portion located upstream of the gas flow-through in a gas flow-through direction is not smaller than an extension length of the heating portion located downstream of the gas flow-through in the gas flow-through direction.

As an alternative, the heater comprises a support frame, which is arranged inside the airflow chamber; each of the heating parts includes:

at least one heating wire, at least one heating wire twines on the support frame in wave form in the air current chamber.

Alternatively, the distance between the inner diameter of the plurality of heating parts and the inner wall of the airflow chamber is not less than a preset distance.

As an alternative, the support frame comprises:

a plurality of support plates disposed on an inner wall of the airflow chamber at intervals in a circumferential direction of the housing, the support plates being configured to support the heating portion in an outward direction from a radial direction of the housing.

As an alternative, the support plate comprises:

the supporting part, a plurality of fixed slots have been seted up on the supporting part, it is a plurality of the fixed slot is followed axis direction interval sets up, the crest of heater strip is around establishing on the fixed slot.

Alternatively, the support portion may be plural, and a diameter of the support portion may be set in correspondence with a size of the heating portion in the gas flow direction.

As an alternative, the support plate is made of mica sheets.

As an alternative, the heater further comprises:

at least one limiting plate disposed between adjacent two of the supporting plates, and configured to fix the heating portion from an outer diameter of the heating portion.

A hair dryer comprising a heater as described above.

The utility model has the advantages that:

the utility model provides a heater, this heater include casing and heating element. Wherein, the casing is equipped with the air current chamber that extends along the axis direction of casing, heating element sets up in the air current chamber, along the gas flow direction, heating element is equipped with a plurality of heating portions, and the external diameter of a plurality of heating portions increases one by one along the gas flow direction, thereby downstream heating portion and the dislocation set of upstream heating portion that make, and then avoid the heating fluid direct heating low reaches heating portion of upper reaches, the security of heater use has been improved, also make the heating area who is located air current low reaches heating portion increase simultaneously, make the gas in the inside air current intracavity of heater can be fully heated, heating efficiency is improved, and then the efficiency of hair-dryer stoving hair is improved.

The utility model also provides a hair drier, through above-mentioned heater, be favorable to improving the efficiency that the hair drier was sent out futilely.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.

Fig. 1 is a first schematic structural diagram of a heater according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram ii of a heater according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a support plate according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram three of a heater provided by the embodiment of the present invention;

fig. 5 is a schematic structural view of a heating part in a heater according to an embodiment of the present invention.

The figures are labeled as follows:

100-a housing; 110-an airflow chamber; 120-inner wall; 130-an outer wall;

200-a heating assembly; 210-a heating section; 210 a-a first heating section; 210 b-a second heating section; 211-heating wires;

300-a support plate; 310-a support; 311-fixed slots;

400-limiting plate;

500-a pressure reducing component.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only a part of the structure related to the present invention is shown in the drawings, not the whole structure.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be structurally related or interoperable between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to be limiting.

The hair dryer is a necessity in life, and generally has a heater for heating air, so that the hair drying efficiency can be improved. The present embodiments provide a hair dryer including a heater to achieve an effect of heating air.

The blower further comprises a housing and a driving assembly, the driving assembly is electrically connected with the heater, and the driving assembly and the heater are simultaneously arranged in the housing. After the drive assembly is electrified, the heater can be driven to heat the gas. More specifically, the casing includes air intake and air outlet, and the drive assembly can be driving piece and fan, and the fan sets up the output at the driving piece, and the fan sets up in air intake department, and the heater is located the one end that the fan kept away from the air intake. When the blower works, the driving piece drives the fan to rotate, air outside the shell is sucked from the air inlet and blown to the heater, and then the air heated by the heater is blown out from the air outlet, so that hot air flow is formed and blown out. The structure has high heating efficiency. And the rotating speed output by the driving part is adjustable, so that the fan has different rotating speeds, and the adjustment of the wind speed of hot air flow is facilitated, and a user can select the corresponding wind speed according to the requirement.

In the prior art, the size of the heater is fixed along the gas flowing direction, that is, the heating range of the heater is the same along the gas flowing direction, which causes the heated fluid at the upstream end to further heat the heating wire at the downstream end, thereby causing the heating wire at the downstream end to be overheated and reddish, and simultaneously causing the heating area of the heater to be limited and the heating efficiency to be low.

As shown in fig. 1 to 3, the present embodiment provides a heater including a case 100 and a heating assembly 200. The casing 100 has a barrel-shaped structure and includes an inner wall 120 and an outer wall 130, and an airflow chamber 110 extending along an axial direction of the casing 100 is disposed between the inner wall 120 and the outer wall 130 to facilitate airflow communication. Heating element 200 sets up in airflow chamber 110, along the gas flow direction, heating element 200 is equipped with a plurality of heating portion 210, and a plurality of heating portion 210 external diameters increase one by one along the gas flow direction, thereby downstream heating portion and upstream heating portion dislocation set that make, and then avoid the heating fluid direct heating downstream heating portion of upper reaches, the security of heater use has been improved, also make the heating area who is located airflow downstream heating portion 210 increase simultaneously, enlarge the holistic heating range of heater, make the fluid in heater inside airflow chamber 110 can be fully heated, improve heating efficiency. Through above-mentioned heater, the hair-dryer can improve the efficiency of drying hair.

Illustratively, as shown in fig. 5, the number of the heating portions 210 in the present embodiment is two, and the first heating portion 210a and the second heating portion 210b are respectively provided, the outer diameters of the first heating portion 210a and the second heating portion 210b are stepped, and the diameter of the circular cross section where the first heating portion 210a is located is larger than the diameter of the circular cross section where the second heating portion 210b is located along the airflow flowing direction, so that the heating area of the heater can be increased. Of course, in other embodiments, the number of the heating portions 210 may also be three, four, or five, or even more, and the more the heating portions 210, the more stepped outer diameters of the plurality of heating portions 210 are formed, so that the heating area of the heating portions 210 gradually increases.

In some other embodiments, the axial cross section of the heating portions 210 may be in a trapezoid shape, wherein the trapezoid width at the downstream end may be greater than the trapezoid width at the upstream end, and the trapezoid design may achieve a gradual increase of the heating area of the heater, thereby improving the heating effect and capacity. Furthermore, because the existing heater utilizes the heating part to heat the air, when the air temperature reaches a high temperature continuously, the air temperature can have a certain reaction on the heating part, so that the heating part is overheated and turns red, and certain potential safety hazard is brought. In order to solve the problem, the inner diameters of the plurality of heating portions 210 are gradually increased along the gas flowing direction, so that the inner diameters and the outer diameters of the plurality of heating portions 210 form a stepped shape along the gas flowing direction, the heating portions 210 are prevented from being concentrated to the same radial height, the fluid heated by the upstream end is prevented from further heating the heating portion 210 of the downstream end, the heating portion 210 of the downstream end is prevented from being overheated and reddened, the safety factor of the heating portion 210 is improved, and the safety of a user using the hair dryer is improved.

Meanwhile, the extension length of the heating part 210 positioned at the upstream of the gas circulation along the gas circulation direction is not greater than the extension length of the heating part 210 positioned at the downstream of the gas circulation along the gas circulation direction, so that the heat of the upstream hot gas flow is reduced, the problem that the heating part 210 at the downstream end is overheated and reddened due to overheating of the upstream hot gas is avoided, the safety factor of the heating part 210 is improved, and the safety of a user using the hair dryer is improved.

In some other embodiments, the extension length of the heating portion 210 located upstream of the gas circulation along the gas circulation direction is not less than the extension length of the heating portion 210 located downstream of the gas circulation along the gas circulation direction, so that there are more heating portions 210 densely arranged at the upstream end, the rapid heating capability of the gas entering the heater is improved, the heating effect can be ensured, and the user experience is improved.

Specifically, as shown in fig. 1 and 2, the heater includes support brackets provided inside the air flow chamber 110, each heating part 210 includes at least one heating wire 211, and the at least one heating wire 211 is wound on the support brackets in a wave shape in the air flow chamber 110, thereby increasing a heating area using a simple heating wire 211 structure. Further, the heights of the wave crests and the wave troughs of the heating wires 211 are consistent, so that the heating wires 211 at different positions have the same heating capacity, and the condition of local heating unevenness is avoided.

Optionally, the distance between the inner diameter of a plurality of heating portions 210 and inner wall 120 of airflow chamber 110 is not less than the preset distance, so as to provide a safe passage for the airflow, reduce the resistance of heating portions 210 to the airflow, and avoid the resistance of heating portions 210 from causing the fluid speed to drop too fast, thereby ensuring the air outlet speed of the fluid, and being beneficial to ensuring the heating efficiency of the heater. Illustratively, the preset distance may be 2mm to 10mm, and may be selectively applied according to a heating area of the heating part 210 and a size of the case, and may alternatively be 2mm,3mm,4mm, and the like.

Further, as shown in fig. 3 and 4, the support frame includes a plurality of support plates 300, the plurality of support plates 300 are disposed on the inner wall 120 of the airflow chamber 110 at intervals along the circumferential direction of the housing 100, the support plates 300 are used to support the heating part 210 from the radial direction outward of the housing 100 so as to support and fix the heating part 210, and the support plates 300 are advantageous to improve the stability of the heating part 210.

It is understood that support plate 300 is a plate-shaped structure disposed in and extending along flow chamber 110, one end of support plate 300 is fixed to inner wall 120 of flow chamber 110, and the other end is used to support fixed heating portion 210, so that a heating region for fluid in the heater is formed.

The detailed structure of the support plate 300 will now be described with reference to fig. 3 and 4.

As shown in fig. 3 and 4, the support plate 300 includes a support part 310 on which the peaks of the heating wire 211 are wound so as to improve stability of supporting the heating part 210. More specifically, a plurality of fixing grooves 311 are formed in the supporting portion 310, the fixing grooves 311 are spaced along the axial direction, and the wave crest of the heater strip 211 is wound on the fixing grooves 311, so that the heater strip 211 is prevented from moving along the axial direction, local overheating or overcooling is prevented from being caused, and the uniformity of heating is improved.

It can be understood that, in order to ensure uniform intervals between the plurality of heating wires 211 to improve heating uniformity, the plurality of fixing grooves 311 have the same distance therebetween. The fixing groove 311 may be a rectangular groove or a saw-tooth-shaped groove, for example. The sawtooth-shaped grooves can enable the heating wires 211 with different thicknesses to be clamped and fixed in the fixing grooves 311, so that the heating wires 211 are prevented from moving, and the stability of the heating wires 211 is better.

Preferably, the heating wire 211 is in interference fit with the supporting plate 300, which is equivalent to "clipping" the heating wire 211 to the supporting plate 300, so as to improve the fixing strength of the heating wire 211.

In correspondence to the heating parts 210, the number of the supporting parts 310 is plural, and the diameter of the supporting part 310 is set corresponding to the size of the heating part 210 in the gas flowing direction, so as to fix each heating part 210, it can be understood that the supporting part 310 on the supporting plate 300 is also stepped in the gas flowing direction, so that the heating part 210 or the heating wire having the same structure is wound around the supporting plate 300 having the stepped shape without changing the structure of the heating part 210 or the heating wire itself, thereby presenting the stepped arrangement of the heating part 210 or the heating wire, and improving the assembling efficiency of the heater.

Optionally, the support plate 300 is made of mica, which has insulation and low-loss thermal resistance, and is beneficial to improving the utilization rate of heat of the heating wire 211.

As shown in fig. 4, as an alternative, the heater further includes at least one limiting plate 400, the limiting plate 400 may be disposed between two adjacent supporting plates 300, and the limiting plate 400 is used to fix the heating part 210 from an outer diameter of the heating part 210, so that the limiting plate 400 and the supporting plates 300 cooperate with each other to fix the displacement of the heating part 210 in the radial direction, thereby preventing the heating part 210 from moving in the radial direction. It can be understood that the limiting plate 400 may be configured with a limiting portion through which the heating wire may pass 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 supporting plate 300 cooperate with each other to fix the heating portion or the heating wire, alternatively, the limiting portion may be a limiting through hole, for example, each limiting plate 400 has one limiting through hole, and at this time, the limiting through hole is a long hole, so that it can be ensured that all the heating portions extending along the gas flowing direction pass through the limiting through hole; in another embodiment, the quantity of spacing through-hole can correspond with the quantity of heating portion, and the position of different spacing through-holes on limiting plate 400 also can be different like this (for example as with heating portion, different spacing through-holes also are the echelonment and arrange on the limiting plate), just so can realize independent spacing to every heating portion, improved the stability of whole heater, reduce the air current noise.

Further, the material of the limiting plate 400 may also be mica sheet, which has the same effect as the supporting plate 300 and is not described herein again.

With continued reference to fig. 4, the heater further includes a voltage dropping unit 500 disposed at the upstream end of the airflow, the voltage dropping unit 500 is disposed on the support, and the voltage dropping unit 500 has a larger resistance than the heating wire 211, so as to regulate the motor and achieve a protective effect.

Further, the heater further comprises a temperature controller arranged at the upstream end of the heating wire 211, and the temperature controller can regulate and control the temperature. Meanwhile, a fuse is provided at a downstream section of the heating wire 211 so as to protect the blower.

It is noted that the basic principles and main features of the present invention and the advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration only, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims and their equivalents.

Claims

1. A heater, comprising:

a housing (100), the housing (100) being provided with an airflow chamber (110) extending in an axial direction of the housing (100); and

and the heating assembly (200) is arranged in the airflow cavity (110), the heating assembly (200) is provided with a plurality of heating parts (210) along the gas flowing direction, and the outer diameters of the heating parts (210) are gradually increased along the gas flowing direction.

2. The heater according to claim 1, wherein inner diameters of the plurality of heating portions (210) increase one by one in the gas flow direction.

3. The heater according to claim 1, wherein an extension length of the heating portion (210) located upstream of the gas flow in a gas flow direction is not smaller than an extension length of the heating portion (210) located downstream of the gas flow in the gas flow direction.

4. The heater of claim 1, including a support frame disposed within the airflow chamber; each of the heating parts (210) includes:

at least one heating wire (211), wherein the at least one heating wire (211) is wound on the support frame in a wavy shape in the airflow cavity (110).

5. The heater according to claim 1, wherein a distance between an inner diameter of the plurality of heating portions (210) and an inner wall (120) of the gas flow chamber (110) is not less than a preset distance.

6. The heater of claim 4, wherein the support bracket comprises:

a plurality of support plates (300), the plurality of support plates (300) are arranged on the inner wall (120) of the airflow cavity (110) at intervals in the circumferential direction, and one side of the support plates (300) far away from the inner wall (120) is configured to support the heating part (210).

7. The heater according to claim 6, wherein the support plate (300) comprises:

the heating wire comprises a supporting portion (310), wherein a plurality of fixing grooves (311) are formed in the supporting portion (310), the fixing grooves (311) are arranged at intervals in the axis direction, and wave crests of the heating wire (211) are wound on the fixing grooves (311).

8. The heater according to claim 7, wherein the supporting portion (310) is plural, and a diameter of the supporting portion (310) is set corresponding to a size of the heating portion (210) in the gas flowing direction.

9. The heater of claim 6, further comprising:

at least one limiting plate (400), the limiting plate (400) being disposed between two adjacent supporting plates (300), and the limiting plate (400) being configured to fix the heating part (210) from an outer diameter of the heating part (210).

10. A hair dryer comprising a heater as claimed in any one of claims 1 to 9.