KR101898484B1 - Electric heater improved with heat transfering efficiency and uniformity - Google Patents

Abstract

The present invention relates to an electric heater with increased heat transfer efficiency and uniformity. The present invention comprises: a first guide part having a first opening part and a second opening part having a diameter larger than that of the first opening part, and having a truncated cone shape; a circular heating part coupled to the first guide part to stop the first opening part while facing the second opening part; and a second guide part including guide members having a truncated cone shape, and coupled to a part adjacent to the second opening part of the first guide part. The radiant heat of the heating part is reflected by the first guide part and is guided to the second guide part and the second opening part. According to the present invention, radiant heat of a heating element is uniformly transferred to a target region to be heated by a user. At the same time, by increasing density of a heat flow toward the target region, a heat loss to a peripheral region is suppressed to significantly increase heat transfer efficiency. The present invention reduces a time in which radiant heat of a heating element remains inside an electric heater, thereby preventing degradation of component durability caused by residual heat.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to an electric heater having improved heat transfer efficiency and uniformity,

The present invention relates to an electric heater having improved heat transfer efficiency and uniformity. More specifically, the present invention relates to a heat transfer device that uniformly transfers radiant heat of a heating element to a target area to be heated by a user, and at the same time increases the density of heat flow toward a target area, The present invention relates to an electric heater capable of preventing a decrease in the durability of parts due to residual heat by reducing the time for which radiant heat of the heating element remains in the electric heater.

As a result of improving living standards and raising awareness of the environment and health, electric heaters that use electricity as an energy source are widely used as indoor heating devices, which are deviated from the method of using fossil fuels such as oil.

Such an electric heater heats ambient air using heat generated by a current flowing through a heating element such as a heating wire, a heat pipe, or the like.

In addition, the electric heater is provided with other components for more efficiently dissipating the heat generated by the heating element.

An example of such a component is a reflector to increase heat transfer efficiency and a protective net to prevent burns.

Figs. 1 and 2 are drawings disclosed in Korean Patent Registration No. 10-0754472 (filed on August 27, 2007, entitled " Protector for a heater and electric heater using the same, " A conventional protective net 3 and a housing 2 serving as a reflector are disclosed.

Referring to FIGS. 1 and 2, a conventional electric heater is configured such that the heating unit 1, the housing 2, and the protection net 3, which are components thereof, are basically rectangular.

However, according to this configuration of the prior art, there arises a problem that heat is concentrated on the four corner portions of the housing 2 and the protection net 3.

This problem is explained in detail as follows.

First, even if the user sets the target area to be heated by himself and adjusts the electric heater so as to face the target area, the heat radiated by the heat generating part 1 is not uniformly transmitted to the target area, There is a problem that transmission uniformity is lowered.

Secondly, since the heat of the heat generating portion 1 is concentrated at the corner portion, the density of the transmitted heat is lowered and the heat is lost to the outside of the target region when the target region is used as a reference. Therefore, There is a problem that heat transfer efficiency is lowered.

Thirdly, since the heating unit 1, the housing 2, and the protection net 3 have a square structure, the time for the heat of the heat generating unit 1 to remain in the electric heater becomes long, The heat is concentrated in the inside of the electric heater, in particular, at the corners of the housing 2 and the protective net 3, so that the durability of this portion is relatively lowered compared to the other portions, leading to a problem of deterioration of the overall durability of the apparatus.

Korean Registered Patent No. 10-0754472 (Registered Date: August 27, 2007, entitled: Protector for heater and electric heater using the same)

An object of the present invention is to provide an electric heater capable of uniformly transmitting radiant heat of a heating element to a target area to be heated by a user.

Another object of the present invention is to provide an electric heater capable of suppressing heat loss to the peripheral region and greatly increasing the heat transfer efficiency by increasing the density of heat flow toward the target area.

Further, the present invention provides an electric heater capable of reducing the time for which radiant heat of a heating element is retained in the electric heater, thereby preventing deterioration of parts durability due to residual heat.

According to an aspect of the present invention, there is provided an electric heater including a first opening and a second opening having a larger diameter than the first opening and having a truncated cone shape, A first guide portion, a circular heating portion facing the second opening portion and coupled to the first guide portion so as to close the first opening portion, and a truncated conical guide member, the portion of the first guide portion adjacent to the second opening portion And the radiant heat of the heat generating part is reflected by the first guiding part and guided to the second guiding part and the second opening part.

In the electric heater with improved heat transfer efficiency and uniformity according to the present invention, the radiant heat led to the second induction portion is reflected by the frustrum-shaped induction members constituting the second induction portion, The whirl-shaped heat flow is enhanced by the centrifugal force of the heat flow reflected by the induction members of the second induction unit in the process of being guided to the second opening of the first induction unit and is discharged to the outside .

In the electric heater having improved heat transfer efficiency and uniformity according to the present invention, the truncated cone shaped induction members constituting the second induction unit have the same focal point.

In the electric heater with improved heat transfer efficiency and uniformity according to the present invention, the heat flow reflected by the induction members is strengthened by the centrifugal force between the induction members constituting the second induction unit, In which there is a spacing space for providing a passageway for < Desc / Clms Page number 2 >

In the electric heater with improved heat transfer efficiency and uniformity according to the present invention, the number of induction members constituting the second induction unit is not less than 2 and not more than 5.

In the electric heater according to the present invention, the second induction unit may include a cruciform fixed supporter coupled to the first induction unit, and induction members fixedly coupled to the fixed supporter so as to be spaced apart from each other And a guide member formed of a guide member.

The electric heater having improved heat transfer efficiency and uniformity according to the present invention may further include a circular protective net coupled to the first induction unit at an outer side of the induction member forming the second induction unit.

According to the present invention, there is an effect that an electric heater capable of uniformly transmitting radiant heat of a heating element to a target area to be heated by a user is provided.

In addition, there is an effect that an electric heater capable of increasing the heat transfer efficiency to a large extent by suppressing heat loss to the peripheral region by increasing the density of the heat flow toward the target region.

In addition, there is an effect that an electric heater capable of reducing the time for which radiant heat of the heating element remains in the electric heater and preventing deterioration of parts durability due to residual heat is provided.

1 and 2 are views showing a conventional electric heater
3 is an exploded perspective view of an electric heater with improved heat transfer efficiency and uniformity according to an embodiment of the present invention,
4 is a view illustrating an exemplary outer shape of an electric heater having improved heat transfer efficiency and uniformity according to an embodiment of the present invention,
5 is a view illustrating an exemplary configuration in which the first induction unit and the heat generating unit included in the embodiment of the present invention are combined,
6 is a view showing an exemplary configuration of a second guide portion included in an embodiment of the present invention.

It is to be understood that the specific structural or functional description of embodiments of the present invention disclosed herein is for illustrative purposes only and is not intended to limit the scope of the inventive concept But may be embodied in many different forms and is not limited to the embodiments set forth herein.

The embodiments according to the concept of the present invention can make various changes and can take various forms, so that the embodiments are illustrated in the drawings and described in detail herein. It should be understood, however, that it is not intended to limit the embodiments according to the concepts of the present invention to the particular forms disclosed, but includes all modifications, equivalents, or alternatives falling within the spirit and scope of the invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 3 is an exploded perspective view of an electric heater with improved heat transfer efficiency and uniformity according to an exemplary embodiment of the present invention. FIG. 4 is a cross-sectional view illustrating an exemplary external shape of an electric heater having improved heat transfer efficiency and uniformity according to an exemplary embodiment of the present invention. FIG. 5 is a view illustrating an exemplary configuration in which a first induction unit and a heat generating unit are combined with each other according to an embodiment of the present invention, and FIG. 6 is a view illustrating an example of a second induction unit included in an embodiment of the present invention Fig.

3 to 6, an electric heater having improved heat transfer efficiency and uniformity according to an embodiment of the present invention includes a front enclosure 100, a body enclosure 200, a first induction unit 300, a heating unit 400 A second induction part 500, and a protection net 600.

The front enclosure 100 and the main body enclosure 200 constitute an appearance of an electric heater having improved heat transfer efficiency and uniformity according to an embodiment of the present invention, and other components are housed or combined with each other. Although the combined shape of the front enclosure 100 and the body enclosure 200 is represented by a hexahedron, this is only one example.

The first induction part 300 has a circular first opening part 310 and a circular second opening part 320 having a larger diameter than the first opening part 310 and is configured to have a truncated cone shape . The truncated cone has a structure in which the cone is cut in a direction perpendicular to the height direction at a predetermined height. When two circular openings having different diameters are provided on both bottom surfaces of the truncated cone, And the second opening 320. The first opening 310 is coupled to a heating unit 400 described later and the second opening 320 provides a path through which the radiant heat of the heating unit 400 is discharged to the outside.

That is, since the first induction part 300 functioning as a heating induction pipe has a truncated cone shape surrounding the heat generating part 400, the heat from the heat generating part 400 is reflected and is reflected to the open front side, Since the inner surface of the guide portion 300 has a truncated cone shape, the heat reflection does not disperse and disperse to the corner / vertex of the rectangular housing as in the prior art, but smoothly circles the inner surface of the first guide portion 300 smoothly, The centrifugal force effect can be obtained, heat transfer efficiency can be increased, and heat concentration and straightness can be enhanced more than in the prior art.

The heat generating unit 400 is coupled to the first guide unit 300 so as to cover the first opening 310 formed in the first guide unit 300 while facing the second opening 320 formed in the first guide unit 300 And is configured to have a circular shape corresponding to the circular shape of the first opening 310. For example, since the heat generated by the radiation of the heat generating unit 400 is transmitted to the rear of the first induction unit 300, the circular heat generating unit 400 generates heat by the first induction unit 300, (300) so as to completely seal the first guide part (310).

The second guide portion 500 is coupled to the inner surface of the first guide portion 300 located near the second opening portion 320 formed in the first guide portion 300, i.e., the second opening portion 320, And comprises frustum-shaped guide members 521 and 522. For example, as the means for coupling the second guide portion 500 to the first guide portion 300, there may be a bolt / nut fastening method, a rivet fastening method, etc. However, the second guide portion 500 and the first guide portion 300 are not limited thereto.

The radiant heat of the heat generating part 400 is reflected by the first guiding part 300 and is radiated to the second guiding part 500 and the second guiding part 500. [ And is guided to the second opening 320.

More specifically, the radiant heat reflected by the inner surface of the first guiding part 300 and guided to the second guiding part 500 is repeatedly reflected to the frustum-shaped guiding members 521 and 522 constituting the second guiding part 500 In the process, it is converted into a hot air current in the form of a whirl. Such a whirling type heat flow is induced in the second opening part 320 of the first induction part 300 by the heat flow reflected by the truncated cone shaped induction members 521 and 522 constituting the second induction part 500, The centrifugal force is strengthened and discharged to the outside.

For example, between the induction members 521 and 522 constituting the second induction part 500, the heat flow reflected by the induction members 521 and 522 is enhanced by the centrifugal force, There may be spaced spaces that provide a passage.

Hereinafter, technical features and effects of an electric heater with improved heat transfer efficiency and uniformity according to an embodiment of the present invention will be described in comparison with the prior art.

1 and 2 showing the prior art, a conventional electric heater is configured such that the heating unit 1, the housing 2, and the protection net 3, which are components thereof, are basically rectangular.

However, according to this configuration of the prior art, heat is concentrated on the four corner portions of the housing 2 and the protection net 3, thereby causing various problems as described below, and the quality of the electric heater is deteriorated.

1 and 2, even if the user sets a target area to be heated by himself / herself and adjusts the electric heater so as to face the target area, the heat generated by the heat generating part 1 There is a problem that the uniformity of heat transfer is lowered due to concentration at corner portions, without being uniformly transmitted to the target region.

However, according to the electric heater having improved heat transfer efficiency and uniformity according to an embodiment of the present invention, the heat generating part 400, the first induction part 300, the second induction part 500, The heat is not concentrated on a specific portion unlike the prior art, and the radiation heat of the circular heating element can be uniformly transmitted to the target region to which the user intends to heat.

Secondly, according to the conventional electric heaters disclosed in Figs. 1 and 2, since the heat of the heat generating portion 1 is concentrated at the corner portion, the density of the transmitted heat is lowered with reference to the target region, The heat transfer efficiency based on the target area is deteriorated.

However, according to the electric heater having improved heat transfer efficiency and uniformity according to an embodiment of the present invention, the radiant heat reflected by the inner surface of the first guiding part 300 and guided to the second guiding part 500 is transmitted to the second guiding part 500, Shaped induction members 521 and 522 constituting the first induction part 300. The repetition of the repetition of the repetition of the repetition of the repetition of the repetition of the repetition of the repetition of the repetition of the repetition of the repetition of the frictional- The conductive force is strengthened by the centrifugal force of the heat flow reflected by the truncated cone shaped induction members 521 and 522 constituting the second induction part 500 and discharged to the outside, The density of the airflow is increased and the heat loss to the peripheral area is suppressed, and the heat transfer efficiency can be greatly increased by this principle.

3 and 4, since the heat generating unit 1, the housing 2, and the protective net 3 have a square structure, the heat of the heat generating unit 1 is transmitted to the inside of the electric heater And the heat of the heat generating portion 1 is concentrated in the interior of the electric heater, particularly, at the corner portions of the housing 2 and the protection netting 3, so that the durability of this portion is relatively high There is a problem that the overall device durability is lowered.

However, according to the electric heater having improved heat transfer efficiency and uniformity according to an embodiment of the present invention, as described above, by the combination of the first induction part 300 and the second induction part 500, The air is repeatedly reflected by the induction members 521 and 522 constituting the second induction part 500 to be converted into the heat air flow of the form of a whirlwind during the discharge process, In the process of being guided to the second opening 320, the transfer force is strengthened by the centrifugal force of the heat flow reflected by the truncated cone shaped induction members 521 and 522 constituting the second induction part 500 and is discharged to the outside , The time during which the radiant heat of the heat generating unit 400 remains in the electric heater is reduced, and the durability of parts due to the residual heat can be prevented.

For example, the second induction part 500 may include a fixed support 510 and an induction member part 520.

The fixed support 510 has a cross shape and is coupled to the first guide portion 300. A plurality of guide members 521 and 522 constituting the guide member 520 are coupled to the stationary support 510 having a cross shape.

The stationary supporter 510 is provided with one horizontal axis member and one vertical axis member that support a plurality of concentric circles, and the horizontal axis member and the vertical axis member may be integrally formed. More specifically, the fixed support 510 supports the induction member 520, which is composed of the plurality of induction members 521 and 522, while firmly supporting the heat resistance generated by intercepting the heat transmitted from the heat generating unit 400 For minimization, it consists of one horizontal axis member and one vertical axis member.

The guide member 520 includes a plurality of frusto-conical guide members 521 and 522. The guide members 521 and 522 are fixed to the stationary support 510 to be spaced apart from each other. The heat flow reflected by the induction members 521 and 522 is transmitted between the induction members 521 and 522 constituting the induction member 520 of the second induction part 500 by centrifugal force, There are spaced spaces that provide a passage through which the calendar is strengthened to the outside.

Specifically, a plurality of guide members 521 and 522 having a plurality of diameters different from each other and constituting the guide member 520 are arranged at regular intervals so as to face the center of a protection net 600 described later, And the frusto-conical guide members 521 and 522 constituting the guide member 520 may be configured to have a long width in the front-rear direction of the discharge port.

The truncated cone shaped induction members 521 and 522 constituting the induction member 520 may be configured to have a concave inclined shape toward the center of the heat generating part 400. [ For example, the truncated cone shaped induction members 521 and 522 constituting the induction member 520 are formed at the rear of the heat generating unit 400 to minimize the incident angle and the reflection angle of the heat, So that the heat can be directly moved forward without colliding with the other guide members 521 and 522.

The coupling between the fixed support 510 and the first guide 300 and the coupling between the fixed support 510 and the guide members 521 and 522 constituting the guide member 520 can be realized by a bolt / Method, a welding method, and the like, but the bonding method is not limited thereto.

For example, in order to maximize the centrifugal force effect to increase the heat transfer force, frusto-conical guide members 521 and 522 constituting the second guide portion 500 may be configured to have the same focal point.

If the number of the induction members constituting the induction member 520 is too large, the heat from the heat generating unit 400 may not be transmitted efficiently due to resistance. On the other hand, if the number of the guide members is too small, the heat can not be properly reflected, and the heat is not transmitted to the outside, but the heat rises directly above the discharge port by the convection action, A phenomenon may occur. Therefore, the number of the guide members constituting the second guide portion 500 is preferably 2 or more and 5 or less, and it is more preferable to use two guide members. However, depending on the size and shape of the product, the number of guide members may be from 2 to 5 or 5 or more.

The protector 600 of the circular shape is coupled to the first guiding part 300 on the outer side of the guiding part 520 constituting the second guiding part 500 and performs a function of preventing the user from burning.

As described above in detail, according to the present invention, there is provided an electric heater capable of uniformly transmitting radiant heat of a heating element to a target area to be heated by a user.

In addition, there is an effect that an electric heater capable of increasing the heat transfer efficiency to a large extent by suppressing heat loss to the peripheral region by increasing the density of the heat flow toward the target region.

In addition, there is an effect that an electric heater capable of reducing the time for which radiant heat of the heating element remains in the electric heater and preventing deterioration of parts durability due to residual heat is provided.

100: Front enclosure
200: Body enclosure
300: first induction part
310: first opening
320: second opening
400:
500: second induction portion
510: Fixed support
520:
521, 522: guide members
600: Protection net

Claims (7)

A first guiding portion having a first opening and a second opening having a larger diameter than the first opening and having a truncated cone shape;
A circular heating unit coupled to the first guide unit to close and seal the first opening toward the second opening; And
And a second guiding part including a guiding member including a frustum-shaped fixed supporter coupled to a portion of the first guiding portion adjacent to the second opening and frusto-conical guiding members fixedly coupled to the fixed supporter and,
The foci of the frustum-shaped guide members constituting the guide member are formed at the rear of the heat-generating portion,
The radiation of the heat generating portion is reflected by the first guiding portion and guided to the second guiding portion and the second opening,
The radiant heat led to the second induction portion is reflected by the truncated cone-shaped induction members constituting the second induction portion to be converted into a heat air flow of a vortex shape, and the heat air flow of the vortex shape is transmitted to the second opening portion of the first induction portion And the heat transfer efficiency and uniformity of the electric heater are enhanced by the centrifugal force of the hot air stream during the induction process. delete The method according to claim 1,
Wherein the foci of the truncated cone-shaped induction members constituting the second induction unit are the same, and the heat transfer efficiency and the uniformity are improved. The method according to claim 1,
Characterized in that there is a spacing space between the induction members constituting the second induction unit to provide a passage through which the heat flow reflected by the induction members is strengthened by the centrifugal force and discharged to the outside. Electric heaters with improved efficiency and uniformity. The method according to claim 1,
Wherein the number of the induction members constituting the second induction unit is 2 or more and 5 or less. delete The method according to claim 1,
The electric heater according to claim 1, further comprising a circular protective net coupled to the first guide portion at an outer side of the guide member portion constituting the second guide portion.

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