KR200303009Y1 - Electric heater with heat shield - Google Patents

Abstract

The present invention relates to a heat shield plate coupled to a safety net of an electric heater. In an electric heater having a reflector, a heating element, and a safety net, an electric heater or an evacuation part is provided by blocking a part of radiant heat reflected by the reflector and radiating forward. It relates to an electric heater having a heat shield plate, characterized in that it comprises a heat shield plate provided with a fixing means for being coupled to the safety net so as to remain below the flash point.

Description

ELECTRIC HEATER WITH HEAT SHIELD

The present invention relates to a heat shield plate coupled to a safety net of an electric heater, and more particularly to an electric heater having a heat shield plate coupled to a safety net to block a part of radiant heat generated by a heating element of the electric heater and forward emitted by a reflector. It is about.

Electric heaters that are widely used in winter, the safety net of the mesh body is attached to the front, the reflection plate formed of a parabola-shaped curved surface is installed on the rear, the heating element installed in the inner center of the reflecting plate is the heating coil wound on the bobbin The heat generated from the heating wire is radiated to the reflecting plate and is formed to be discharged to an appropriate distance forward, and the reflecting plate is attached to the upper portion of the post which extends vertically from the main body. In addition, a heating element protecting plate for protecting the heating element is formed in the center of the safety net.

In order to heat the room using the above-mentioned general electric heater, a heating element having a power consumption of 900 to 1000 W (watts) should be used, but when heating the room using the heating element for a long time, the temperature of the heating surface or the evacuation part Is continuously raised and eventually rises to the ignition point, increasing the risk of fire from spontaneous ignition. Therefore, some companies produce the product by lowering the power consumption of the heating element to 600W in order to reduce the risk of fire.However, the heating amount of the heating element is low to heat the room with the heating element, so that the heating effect is not obtained and the heating performance is reduced. Compared with this, the power consumption is large.

Therefore, it is required to develop an electric heater that can lower the risk of fire while maintaining the power consumption of the heating element at 900 to 1000 W as in the prior art. As an example of such a method, it is possible to partially block the radiant heat emitted by the heating element. A method of using a heat shield plate that can be used has been proposed. Although a little different from the above method, a conventional technique for an electric heater having a heat shield for blocking radiant heat concentrated on an upper portion of a reflector is disclosed in Korean Utility Model Model No. 271704, the embodiment of which is shown in FIGS. It is shown in 4b.

The electric heater 1 having the heat shield plate 100 is installed in the reflector plate 3 to form a space for accommodating the heating element 2 and the front surface of the reflector plate 3, which is heated when the power is applied. In the electric heater (1) having a safety net (4), the heat shield plate 100 is provided on the upper end of the reflecting plate (3) to prevent foreign matter from falling into the heating element (2) through the safety net (4), The heat shield plate 100 also relates to a plurality of through holes 101 distributed to prevent overheating.

The heat shield plate 100 of the electric heater 1 is installed to prevent burns caused by the contact of the body while blocking the heat radiated to the top to prevent overheating of the safety net 4, and generally has a parabola shape Most of the heat generated from the heating element 2 of the electric heater 1 is reflected by the reflecting plate 3 is emitted forward, and a very part of the heat is transferred to the upper end of the safety net 4 by natural convection, so The heat shield plate 100 is not very helpful in preventing fire.

On the other hand, up to now, although there is no electric heater 1 having means for effectively blocking the radiant heat reflected by the reflecting plate 3 of the general electric heater 1 and radiated forward, the electric heater 1 Safety standards for heating supplies to prevent fire by suppressing the temperature rise of heating parts or evacuation parts during use are prepared and implemented by the Technical Standards Institute as follows.

According to the safety standards listed in "Safety of Household Appliances and Similar Electrical Appliances" according to K60335-2-30, Electrical Appliance Safety Standard No. 200-54 of the Technical Standards No. The electric heater is operated with the radiating part of the tester facing one wall of the test corner. The maximum temperature of the wall is measured with the electric heater 500 mm away from the wall, and the temperature rise of the wall should not exceed 70K. " It is written.

Therefore, it is urgent to develop an electric heater that meets the electrical appliance safety standards, and it is particularly necessary to provide a heat shield means that heating performance is not deteriorated while appropriately blocking radiant heat radiated forward.

The present invention has been made to solve the above problems, an object of the present invention is to partially radiate the radiant heat that is reflected by the reflector when the heating is performed by using a general electric heater having a parabolic reflector plate It provides a heat shield plate that can be used in conjunction with the safety net formed on the front of the electric heater in order to block the temperature of the heat transfer unit or the evacuation part to be below the ignition point, and effectively cools the heat shield plate heated by the heating element or Another object is to provide an electric heater having a heat shield plate having a plurality of holes formed therein for passing some radiant heat forward.

An object of the present invention is to provide a reflector, a heating element, and a safety net, the safety net so that a part of the radiant heat reflected by the reflecting plate and radiated forward to keep the heat transfer part or the evacuation part below the ignition point It is achieved by an electric heater having a heat shield, characterized in that it comprises a heat shield plate provided with a fixing means for being coupled to.

Preferably, the fixing means of the heat shield plate is formed to protrude in all directions so as to face the outer circumferential surface of the safety net to be fixed, or the fixing means of the heat shield plate is wound on the transverse wire of the safety net to fix the It is achieved by an electric heater having a heat shield plate, characterized in that the fixed blade is formed extending from the outer peripheral portion of the heat shield plate.

More preferably, the heat shield plate is achieved by an electric heater having a heat shield plate, characterized in that it is formed of a heat resistant or heat insulating resin that does not deform at high temperatures of the heating element.

In addition, the heat shield plate is achieved by an electric heater having a heat shield plate, characterized in that a hole is formed to penetrate some radiant heat or cool the heat shield plate.

In addition, in order to open and close the hole of the heat shield plate, the opening and closing hole is formed in a position corresponding to the hole, the rotary plate is formed by protruding a knob for gripping operation by hand in the center; And heat shield plates each having a fastener formed at a central portion thereof to expose and fix the knob of the rotary plate to the outside, and rotate the rotary plate in a state in which the rotary plate is coupled to the inside of the heat shield plate so that the holes and the opening and closing holes are shifted. It is achieved by an electric heater having a heat shield plate to open and close the hole.

1A is an exploded perspective view illustrating a state in which a heat shield plate is coupled into a safety net according to a first embodiment of the present invention;

Figure 1b is an exploded perspective view showing a state in which the heat shield plate coupled to the outside of the safety net according to a second embodiment of the present invention,

Figure 1c is an exploded perspective view showing a state in which the heat shield plate coupled to the inside of the safety net according to a third embodiment of the present invention,

2a is a front view of a heat shield plate according to a fourth embodiment of the present invention;

2b is a front view of a heat shield plate according to a fifth embodiment of the present invention;

2c is a front view of a heat shield plate according to a sixth embodiment of the present invention;

3A is an exploded perspective view of a heat shield plate according to a seventh embodiment of the present invention;

3B is a front view of a state in which the heat shield plate of FIG. 3A is coupled;

Figure 4a is a perspective view of a heat shield plate used in a conventional electric heater,

Figure 4b is an enlarged cross-sectional view of the main part in a state where the heat shield plate used in the conventional electric heater is installed.

Explanation of symbols on the main parts of the drawings

1: electric heater 2: heating element

3: reflector 4: safety net

5a ~ 5g: heat shield 6,6 ': fixing means

7: rotating plate 41: heating element protection plate

42: transverse wire 51: front

52: Back 53,53 ', 53 ": Hole

54: fixture 55: guide

61: fixed piece 62: fixed blade

71: knob 72: opening and closing hole

100: heat shield 101: through

Hereinafter, with reference to the accompanying drawings an embodiment according to the present invention in more detail as follows.

Electric heater 1 according to the present invention is a widely used electric heater (1) is a parabolic reflector 3 surrounding the heating element (2) and the safety net (4) coupled to the front of the reflector 3 And radiant heat generated from the heat generating element 2 is reflected by the reflecting plate 3 and radiated forward. Therefore, the heat shield plates 5a to 5g according to the present invention are designed to maintain a temperature below the ignition point by blocking a part of the radiant heat radiated forward coupled to the safety net 4 to suppress the temperature rise of the heat transfer part or the evacuation part. .

The heat shielding plates 5a to 5g according to the present invention are sized to block 30 to 50% of radiant heat reflected by the reflecting plate 3 and forward, that is, projected by the reflecting plate 3. It is preferable to form a size that can cover 30 to 50% of the area, and since the radiant heat radiated forward tends to be generally concentrated in the center of the heat transfer part or the evacuation part, the heat shield plates 5a to 5g are described above. It is preferable to use in combination with the center of the safety net (4).

1A is an exploded perspective view illustrating a state in which the heat shield plate 5a is coupled into the safety net 4 according to the first embodiment of the present invention, and the heat shield plate 5a is a front portion of the safety net 4. One side is formed in the form of a circle having a convex curved surface so as to be covered.

Since the heat shield plate 5a is fixedly coupled to the inside of the safety net 4, a fixing means 6 is formed on the front surface 51 of the heat shield plate 5a, that is, the convex surface, and the fixing means 6 is fixed thereto. ) Is a means that can be wrapped and fixed to the outer peripheral surface of the wire having a circular cross section, as shown in the partially enlarged view, the fixing pieces 61 formed to face each other are opened and retracted by elastic force to hold the wire. It is formed so as to protrude, and the fixing piece 61 is formed in plural in all directions around the front surface 51 of the heat shield plate (5a). Here, the shape of the fixing means 6 is not limited to the fixing piece 61 of the illustrated form, and bent and fixed appropriately to have a function similar to the fixing piece 61 by using a material having elastic force such as a metal piece. It is also possible to form the means 6.

In order for the heat shield plate 5a to be in close contact with the inside of the safety net 4 and to be firmly coupled, it is preferable that the convex surface of the heat shield plate 5a is formed to be the same as the inner curvature of the safety net 4. The heat shielding plate 5a is preferably formed of a heat resistant or heat insulating resin of a property that is not easily deformed or burned by the radiant heat absorbed from the heat generator 2.

1B is an exploded perspective view showing a state in which the heat shield plate 5b according to the second embodiment of the present invention is coupled to the outside of the safety net 4, and the heat shield plate 5b is outside the safety net 4. The state in which the fixing piece 61, which is the fixing means 6, is formed on the rear surface 52 of the heat shield plate 5b, that is, the concave surface, is shown.

1C is an exploded perspective view showing a state in which the heat shield plate 5c is coupled to the inside of the safety net 4 according to the third embodiment of the present invention, and the heat shield plate 5c is outside the transverse direction of the safety net 4. The state in which the fixing means 6 'is formed on the outer circumference of the heat shield plate 5c to be wound and fixed to the ear 42 is illustrated.

The fixing means 6 'of the heat shielding plate 5c is fixed in all directions by a length sufficient to wind the transverse wire 42 from the outer circumferential portion of the heat shielding plate 5c formed of a disk-shaped metal material. 62 is extended and the fixing blade 62 is wound around the outer circumferential surface of the transverse wire 42 to be fixed while the heat shield plate 5c is positioned inside the safety net 4.

When heating the heating element 2 in a state in which the heat shield plates 5a, 5b, 5c according to FIGS. 1a to 1c are coupled to the safety net 4, the temperature of the heat transfer part or the heating part is determined according to the electrical appliance safety standards. Since the relative temperature does not exceed 70K or more, it is possible to heat the environment below the ignition point.

On the other hand, by combining the heat shield plate (5a, 5b, 5c) to the safety net 4, the risk of fire is reduced while the user may not be able to heat to the desired room temperature In order to solve this problem, heat shielding plates 5d, 5e, and 5f according to another embodiment of the present invention are shown in FIGS. 2a to 2c, and the heat shielding plates 5d, 5e, and 5f are configured to pass and cool radiant heat. Holes 53, 53 ', 53 "are formed.

In the heat shielding plates 5d, 5e, and 5f according to another embodiment of the present invention, the heat that has been degraded by the heat shielding plates 5a and 5b by penetrating part of the radiant heat reflected by the reflecting plate 3 and emitted forward Holes 53, 53 ', 53 "are formed to cool the heat shielding plates 5a, 5b that are overheated by increasing efficiency or blocking radiant heat. Holes in the heat shielding plates 5a, 5b are formed. When the 53, 53 ', 53 "is not formed, the cooling of the heat shield plates 5a and 5b is performed by convection of heat conducted to the front surface 51 of the heat shield plates 5a and 5b. Although cooling is performed, when the temperature of the heating element 2 is high or the amount of heat absorbed by the heat shielding plates 5a and 5b is greater than the amount of heat released, the heat shielding plates 5a and 5b are overheated. To this end, a plurality of holes 53, 53 ', 53 "are formed in the heat shielding plates 5a, 5b according to Figs. 1A and 1B. Maximizing the contact area with the roof, and heat conducted from the back surface 52 of the heat shield plates 5d, 5e, 5f by convection, and the front surface 51 of the heat shield plates 5d, 5e, 5f and the heat shield plate. Since heat is rapidly released through the holes 53, 53 ', 53 "formed in the 5d, 5e, 5f, the heat shield plates 5d, 5e, 5f can be prevented from overheating in advance.

The holes 53, 53 ', 53 "formed in the heat shield plates 5d, 5e, 5f to perform the cooling function of the heat shield plates 5d, 5e, 5f are the same as those shown in FIGS. 2A to 2C. It is formed in the same form.

FIG. 2A is a front view of the heat shielding plate 5d according to the fourth embodiment of the present invention, and with respect to the heat shielding plate 5a coupled to the inside of the safety net 4 like the heat shielding plate 5a shown in FIG. 1A. The state in which the hole 53 is formed is shown.

The heat shield plate 5d has holes 53 having a predetermined length in the circumferential direction in a plurality of rows, and the front surface 51 of the heat shield plate 5d has a plurality of fixing means 6 in all directions. The fixing piece 61 which is) is formed.

FIG. 2B is a front view of the heat shield plate 5e according to the fifth embodiment of the present invention, and the heat shield plate 5a coupled to the inside of the safety net 4 like the heat shield plate 5a shown in FIG. 1A. The state in which the holes 53 'are formed is shown.

The heat shielding plate 5e is formed with a plurality of rows of holes 53 'having a predetermined length in the centrifugal direction. The front surface 51 of the heat shielding plate 5e has a plurality of fixing means in all directions ( 6) a fixing piece 61 is formed.

FIG. 2C is a front view of the heat shielding plate 5f according to the sixth embodiment of the present invention, and with respect to the heat shielding plate 5a coupled to the inside of the safety net 4 like the heat shielding plate 5a shown in FIG. 1A. The state in which the hole 53 "is formed is shown.

The heat shielding plate 5f is formed with a plurality of rows 53 " with a predetermined diameter in the circumferential direction, and a plurality of fixing means are provided on the front surface 51 of the heat shielding plate 5f in all directions ( 6) a fixing piece 61 is formed.

The heat shielding plates 5d, 5e, 5f according to the fourth to sixth embodiments are described to be coupled to the safety net 4 by the method according to the first embodiment shown in Fig. 1A, but the fixing means 6 ) May be formed on the rear surface 52 of the heat shield plate 5b in the same manner as in the second embodiment shown in FIG. 1B to be coupled to the safety net 4.

3A is an exploded perspective view of the heat shielding plate 5g according to the seventh embodiment of the present invention, and the rotary plate 7 is provided on the inner side to open and close the hole 53 formed in the heat shielding plate 5d according to FIG. 2A. The added state is shown.

The heat shielding plate 5g shown in FIG. 3A includes a rotating plate 7 which is rotated in close contact with the inside of the heat shielding plate 5d according to FIG. 2A, and the rotating plate 7 has a knob 71 for rotational operation. ) Is formed to protrude to the front surface 51 of the heat shield plate (5g).

In more detail, the opening and closing hole 72 having the same size and shape is formed in the rotating plate 7 at a position corresponding to the hole 53 formed in the heat shielding plate 5g, and particularly in the center of the car. A knob 71 for protruding rotation by gripping by hand in the state exposed to the front surface 51 of the hot plate 5g is formed.

Meanwhile, a fastener 54 for exposing and fixing the knob 71 of the rotating plate 7 to the outside is formed at the center of the heat shield plate 5g, and the rotating plate 7 is formed at the outer circumferential portion of the rear surface 52. A plurality of guides 55 are bent inward so as to be smoothly rotated in close contact with the rear surface 52 of the heat shielding plate 5g.

The heat shielding plate 5g shown in FIG. 3A is not limited to the heat shielding plate 5d according to FIG. 2A, and the rotation plate (5e, 5f) according to FIGS. 2B and 2C is also modified. 7) can be added.

3B is a front view of a state in which the heat shield plate 5g of FIG. 3A is coupled, and the rotary plate 7 is coupled to the inside of the heat shield plate 5g so that the knob 71 may have a front surface (5g) of the heat shield plate 5g. Protruding state 51 is shown.

In order to allow the knob 71 of the rotating plate 7 to protrude to the front surface 51 of the safety net 4 while the heat shield plate 5g is coupled to the inside of the safety net 4, The heat shield plate 5g should be coupled while the heating element protection plate 41 formed at the center is removed.

When the knob 71 protruding from the front surface 51 of the heat shielding plate 5g is rotated in one direction while the rotary plate 7 is coupled to the inside of the heat shielding plate 5g, the rotary plate 7 As the 7 is rotated, the opening 53 and the opening and closing hole 72 of the heat shielding plate 5g are displaced to open and close the cross section of the opening 53.

As described above, the heat shield plates 5a to 5g according to the present invention are described with respect to the electric heater 1 in which the reflecting plate 3 is fixed and radiates radiant heat reflected in one direction, but is not limited thereto. It is also possible to easily combine the heat shield plate (5a ~ 5g) to the safety net (4) of the electric heater (1) is provided with a rotating means capable of rotating in the horizontal direction.

In addition, the shape of the heat shield plates 5a to 5g coupled to the inside or the outside of the safety net 4 is described as being concave or convex so as to be in close contact with the safety net 4 formed as a curved surface, but not limited thereto. It is also possible to form the heat shield plates 5a to 5g in a flat manner like a disc to be used in combination with the safety net 4.

As described above, the present invention uses a general electric heater having a parabolic reflector, and the temperature is raised to the ignition point by radiant heat concentrated on the heat transfer part or the evacuation part by the radiant heat reflected by the reflector and radiated forward. In order to prevent the risk of fire caused by the use of the electric heater by providing a heat shield plate that can be easily coupled to the safety net of the electric heater to block 30 to 50% of the radiant heat, by using the heat shield plate An electric heater that satisfies the safety standards of electrical appliances notified by the Korean Agency for Technology and Standards without providing a lower heat capacity was provided. On the other hand, when the heating effect is not obtained by the heat shield plate, a plurality of holes are formed in the heat shield plate so that the radiant heat reflected by the reflector plate and partially radiated forward is transmitted through the hole to somewhat heat transfer unit or Since the temperature of the evacuation part can be increased, and the formation of the hole provides a result of having a large contact area with the indoor air, it effectively cools the heated heat shield plate by blocking radiant heat radiated forward. An electric heater having a heat shield plate which does not deform or burn due to radiant heat even when an electric heater is used for a long time is provided.

Claims (6)

In the electric heater (1) provided with a reflecting plate (3), a heating element (2) and a safety net (4), Fixing means (6, 6 ') are provided for coupling to the safety net (4) so that the heat transfer part or the evacuation part is kept below the ignition point by blocking a part of the radiant heat reflected by the reflector 3 and forward Electric heater having a heat shield plate, characterized in that it comprises a heat shield plate (5a ~ 5g). The method of claim 1, Fixing means (6) of the heat shield plate (5a, 5b, 5d ~ 5g) is characterized in that the fixing piece 61 protrudes in all directions so as to face to be wrapped around the outer peripheral surface of the safety net (4) Electric heater with hot plate. The method of claim 1, The fixing means 6 'of the heat shield plate 5c is characterized in that the fixing blade 62 is formed on the outer circumference of the heat shield plate 5c so as to be wound around the wire 42 in the safety net. An electric heater having a heat shield plate. The method of claim 1, The heat shield plate (5a, 5b, 5d ~ 5g) is an electric heater having a heat shield plate, characterized in that formed of a heat-resistant or heat-insulating resin that does not deform at a high temperature of the heating element (2). The method of claim 1, The heat shield plate 5d to 5g has holes 53, 53 'and 53 "formed therein to allow a part of radiant heat to pass through or to cool the heat shield plate 5d to 5g. Electric heater having a. The method of claim 5, In order to open and close the hole 53 of the heat shield plate 5g, An opening and closing hole 72 formed at a position corresponding to the hole 53, and a rotating plate 7 having a knob 71 protruding from the central portion by hand for rotational operation; A heat shield plate having a fastener 54 formed at a central portion thereof to fix the knob 71 of the rotating plate 7 to the outside; Are formed respectively, and the rotating plate 7 is rotated while the rotating plate 7 is coupled to the inside of the heat shielding plate 5g so that the hole 53 and the opening / closing hole 72 are displaced so that the hole 53 Electric heater having a heat shield plate opening and closing).