KR102540139B1 - Foot warmer intergrating heat conduction and heat radiation and heat convection - Google Patents

Abstract

The present invention is a heat conduction, heat radiation, and natural convection heat transfer combined heating stove (2), in the form of a box made of a thermally conductive material, having an air flow inlet 24 at the bottom and a plurality of heat passage holes 22 on the scaffold surface 20 Arranged box-shaped footrest portion 4, footrest casing 6 mounted on the box-shaped footrest portion 4 and configured to have an inner chamber by left and right side wall plates 6a, rear wall plates 6b, and upper footrest plate 6c ), the space heater 10 installed via the spacer 26 in the inner space of the box-type scaffolding part 4, and the space heater 10 are located in the inner space of the box-type scaffolding part 4 It is composed of a spacer frame 8 having a spacer 26 and a temperature controller 12 for adjusting the heat temperature of the space heater, so that the space heater The heat transferred indirectly from (10) remains, and the radiant heat of the space heater (10) passing through the plurality of heat passage holes (22) formed on the footrest surface (20) of the box-shaped footrest part (4) is transferred to the foot cover casing. (6), the air flow is introduced through the air flow inlet 24 of the box-shaped scaffolding portion (4), and the natural convection heat passing through the plurality of heat passage holes (22) is transferred to the inner chamber of the cover casing (6). The thermal confinement heating composition part that is thermally confined to is formed.

Description

Heat conduction, heat radiation and natural convection heat transfer combined heating stove {FOOT WARMER INTERGRATING HEAT CONDUCTION AND HEAT RADIATION AND HEAT CONVECTION}

The present invention relates to a heating stove, and more particularly, to a heating stove with low manufacturing cost and electricity cost, excellent usability and stability, and excellent heat management efficiency by using natural convection heat transfer as well as heat conduction and heat radiation.

In general, if you are in an office environment where you rub your feet naturally because your feet are cold in winter, or if the floor is cold even at home, you will find a lot of foot heaters to warm your feet.

When a general electric stove, which has been widely used recently, is used as a foot stove, if it is slightly away from the stove, the heat does not reach the user's feet well, and if it is in close contact with the user, there is a risk of fire or burns.

A lot of dedicated foot stove products are being released to solve these disadvantages. For example, the floor is provided with an electric heating floor with low power consumption (20 ~ 30W / h) and fabric made of hair or fiber is formed in the form of a pocket. There are pocket foot warmers and folding screen foot stoves that surround the user's shin area like a folding screen and apply heat.

However, products in the form of pocket foot warmers generally have the advantage of being inexpensive, but it is cumbersome to put your feet in and take them out of the pocket, the movement of your feet is limited when you put your feet in, and while using the warmers, sweat or foreign substances in the pockets accumulate, causing bacterial growth or odor. There are drawbacks to the phenomenon.

In addition, in the case of a folding screen foot stove, it has the advantage that it is convenient to move the feet and is hygienic, but compared to the pocket foot warmer product, the sales price is considerably higher, the power consumption is high, and safety difficulties such as falling over if not handled carefully during use Although it is useful to some extent for warming the user's shin or instep, it has a structural disadvantage that the thermal efficiency is not good compared to the power consumption and it is somewhat difficult to warm the sole of the user's foot.

Registered Utility Model Publication No. 20-0466106 "Foot Stove"

Therefore, an object of the present invention is to provide a heat conduction, heat radiation, and natural convection heat transfer combined heating stove that has low manufacturing cost or electricity cost, excellent usability and safety, and excellent heat management efficiency by using heat conduction, heat radiation, and natural convection heat transfer together. is in

The present invention according to the above object is a box-shaped scaffolding unit in the form of a box made of thermally conductive material, having an airflow inlet at the bottom and having a plurality of heat passage holes arranged on the scaffolding surface, and a box-shaped scaffolding unit mounted on the box-shaped scaffolding portion and having left and right side wall plates and rear wall plates And a foot cover casing configured to have an inner chamber as an upper foot cover plate, a space heater installed through a spacer in the inner space of the box-type footrest portion, and a spacer so that the space heater is positioned in the inner space of the box-type footrest portion. Consisting of a spacer frame and a temperature controller for adjusting the heat temperature of the space heater,

The heat transferred indirectly from the space heater remains on the scaffold surface of the box-type scaffolding part, and the radiant heat of the space heater passing through the plurality of heat passage holes formed on the scaffolding surface of the box-type scaffolding part is transmitted to the inner chamber of the foot cover casing. Thermal radiation and natural convection composite foot, characterized in that the air flow is introduced through the air flow inlet of the box-type scaffolding and the natural convection heat passing through the plurality of heat passage holes forms a thermal confinement heating composition part that is thermally confined to the inner chamber of the cover casing. It is a stove.

In the present invention, the space heater is characterized by consisting of an AC / DC converter, an electric heating element, and a heat sink surrounding the electric heating element,

In addition, in the present invention, the spacer frame has a spacer that allows the space heater to be spaced apart from the scaffolding surface of the box-type scaffolding part, and the airflow introduced through the airflow inlet can rise, and solid foreign substances on the scaffolding surface can pass through the heat passage of the scaffolding surface. It is characterized in that it has an incision opening that allows falling discharge to the floor through and a support foot of the main body of the foot stove.

The present invention has advantages in that the manufacturing cost and electricity cost of the heating stove are low, usability and safety are excellent, and heat management efficiency is excellent by using heat conduction, heat radiation and natural convection together in operating the heating stove.

1 and 2 are perspective configuration diagrams of heat transfer, heat radiation, and natural convection heat transfer combined heating stoves according to an embodiment of the present invention;
3 is an exploded perspective configuration diagram of a heat conduction, heat radiation, and natural convection heat transfer combined heating stove of the present invention;
Figure 4 is a concrete exploded configuration diagram of the space heater and spacer frame for heat conduction and heat radiation and natural convection heat transfer in FIG.
5 is a cross-sectional configuration diagram of a heat conduction, heat radiation, and natural convection heat transfer combined heating stove of the present invention;
Figure 6 is a cross-sectional configuration diagram of a state of use of the heat conduction and heat radiation and natural convection heat transfer combined heating stove of the present invention.

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

1 and 2 are perspective configuration diagrams of a heat conduction, heat radiation, and natural convection heat transfer combined heating stove 2 according to an embodiment of the present invention, in which FIG. 1 is a perspective view as seen from the top and FIG. 2 is a perspective view as seen from the bottom.

3 is an exploded perspective configuration diagram of a heat conduction, heat radiation, and natural convection heat transfer combined heating stove 2 of the present invention, and FIG. 4 is a space heater 10 and a spacer frame for heat conduction, heat radiation, and natural convection heat transfer in FIG. 3 (8) is a concrete exploded configuration diagram, and FIG. 5 is a cross-sectional configuration diagram of the heat conduction, heat radiation, and natural convection heat transfer combined heating stove 2 of the present invention, which is a cross-sectional view taken along line A-A in FIG.

As shown in FIGS. 1 to 3, the heat conduction, heat radiation, and natural convection heat transfer combined heating stove 2 according to an embodiment of the present invention includes a box-shaped footrest 4, a foot cover casing 6, a spacer ( 26) and a spacer frame 8, a space heater 10, and a temperature controller 12.

The box-shaped footrest part 4 of the foot stove 2 is a place where the user's feet are comfortably placed, and has a box shape made of a thermally conductive metal material such as stainless steel, and has an air flow inlet 24 at the bottom of the box body and a footrest surface ( 20) has a configuration in which a plurality of heat passage holes 22 are arranged.

The footrest casing 6 is a structure in which the inner chamber of the footrest casing 6 is formed with a thermal confinement heating composition for heat confinement while providing an inner space convenient for putting the user's feet in and easily pulling out. The footrest casing 6 is an upper footrest plate extended to cover the left and right side wall plates 6a and the rear wall plate 6b surrounding the three sides of the box body on the box-shaped footrest portion 4, and the user's feet 40 ( 6c), and a convective heat flow slope 7 inclined upward toward the rear wall plate 6b is formed on the upper foot plate 6c to confine the natural convective heat generated by the air flow to the inner chamber closed space.

The material of the box-shaped footrest part 4 of the foot stove 2 and the foot cover casing 6 is preferably stainless steel.

The space heater 10 is installed through the spacer 26 in the inner space of the box-shaped scaffolding portion 4 so that the scaffolding surface 20 of the box-shaped scaffolding portion 4 is warmed by indirect heat transfer and the scaffolding surface ( It is a heat source that allows thermal radiation and natural convection heat to pass through the heat passage holes 22 of 20). The power consumption of the space heater 10, which is suitable for implementing the heating stove 2 of the present invention in a power saving type, is 80 to 180 W/h.

The spacer frame 8 has a spacer 26 so that the space heater 10 is positioned in the inner space of the box-shaped scaffolding portion 4, and is installed inside the box-shaped scaffolding portion 4.

Referring to FIG. 4 , the space heater 10 and the spacer frame 8 will be described in more detail.

The space heater 10 consists of an AC/DC converter 32 that converts commercial AC power into DC power, an electric heating element 34 as a heat source, and a heat sink 36 surrounding the electric heating element 34. And, the space heater 10 is heat protected to the spacer 26 of the spacer frame 8 and is provided with a support bracket 38 to ensure that it is safely mounted.

The electric heating element 34 generates heat by winding a ceramic heating wire, and uses a ceramic heater or special coating lamp having a far-infrared emitting effect, and a near-infrared heater having a cell tissue activation function is preferable, and a PTC heater or a halogen heater is also possible.

And, as shown in FIGS. 4 and 5, the spacer frame 8 is formed by cutting and bending the plate material so that the spacer 26, the incision 30, the support feet 28 of the main body, and the air flow inlet 24 are formed. It is provided integrally, but the space heater 10 has a spacer 26 positioned to be spaced apart from the scaffolding surface 20 of the box-shaped scaffolding portion 4, and the incision opening 30 is the box-shaped scaffolding portion 4 It is composed of a cut size that allows the air flow introduced through the air flow inlet 24 to rise and allows solid foreign substances falling down the heat passage hole 22 of the footrest surface 20 to be discharged to the outer floor of the main body.

In addition, the heat conduction, heat radiation, and natural convection heat transfer combined heating stove 2 of the present invention is provided with a temperature controller 12 for adjusting the heat temperature of the space heater 10 on the side wall of the foot cover casing 6, , Next to the temperature controller 12 is also provided a power switch 14 for regulating power supply.

In the heat conduction, heat radiation, and natural convection heat transfer combined heating stove 2 of the present invention having the above configuration, the indirect heat transferred from the space heater 10 remains on the foot surface 20 of the box-shaped footrest unit 4 And so that the radiant heat of the space heater 10 passing through the plurality of heat passage holes 22 formed in the footrest surface 20 of the box-shaped footrest portion 4 is transmitted to the inner chamber of the foot cover casing 6 to warm the user's feet, and airflow flows in through the airflow inlet 24 of the box-shaped footrest portion 4, and natural convection heat passing through a plurality of heat passage holes 22 formed on the footrest surface 20 The user's feet in the inner chamber of (6) are warmed, and at the same time, the convective heat flow slope (7) formed on the upper foot plate (6c) of the cover casing (6) is confined to the inner chamber, so heat confinement heating form the composition.

Figure 6 is a cross-sectional configuration diagram of a state of use of the heat conduction, heat radiation, and natural convection heat transfer combined heating stove 2 of the present invention.

The heat conduction, heat radiation, and natural convection heat transfer combined heating stove 2 of the present invention has a structure in which the front and upper portions of the foot cover casing 6 are open, so as shown in FIG. It is very convenient to put on or take out from the footrest surface 20 of (4), and there is an advantage in that the inner chamber has a somewhat sufficient space to move with both feet 40 on.

In addition, in the heat conduction, heat radiation, and natural convection heat transfer combined heating stove 2 of the present invention, the space heater 10 is spaced apart from the footrest surface 20 of the box-type footrest portion 4, so that the space heater 10 has little Even if higher heat is radiated, the user's feet (40) placed on the box-type footrest (4) are safe because they are not burned, and the footrest surface (20) of the box-type footrest (4) is warmed up by indirect heat conduction, so the user's feet warms up

In addition, through the plurality of heat passage holes 22 formed on the footrest surface 20 of the box-shaped footrest part 4, the natural convection heat as well as the radiant heat of the space heater 10 passes through and is transferred to the inner chamber of the footrest casing 6 And, since the foot cover casing 6 is confined by the left and right side wall plates 6a, the rear wall plate 6b, and the upper foot cover plate 6c, the radiant heat and natural convection heat transmitted to the inner chamber remain in the inner chamber . The formation of the heat confinement heating component in the inner room minimizes heat loss and maximizes thermal efficiency to warm the user's feet 40, and also somewhat reduces the leakage of dry air out of the foot stove 2 into the room.

The box-type footstool part 4 can be used as a footstool on which the feet can be placed when the desk sits regardless of the season, and the heat passage holes 22 of the footrest surface 20 are used by the user with both feet 40 on. Depending on the method, acupressure effect can be given to some extent, and since foreign substances detached from the socks worn by the user are also dropped and discharged, there is also a cleaning effect in which foreign substances are removed from the inner room.

In the above description of the present invention, specific embodiments have been described, but various modifications can be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be determined by the described embodiments, but should be defined by the claims and their equivalents.

(2)-- foot stove (4)-- box type footrest
(6)--foot cover casing (6a)--left and right side wall plates
(6b)-- Rear wall plate (6c)-- Upper foot plate
(7)--convective heat flow slope (8)--spacer frame
(10)- Space Heater (12)- Thermostat
(14)-- power switch (20)-- foot plate
(22)--heat through hole (24)--air flow inlet
(26) -- spacer (28) -- support foot
(30)--incision (32)--AC/DC converter
(34)-- electric heating element (36)-- heat sink
(38)- support bracket (40)- both feet

Claims (3)

In the heat conduction and heat radiation and natural convection heat transfer combined heating stove,
It is a box shape as a thermally conductive metal material, and has an air flow inlet 24 at the bottom of the box body, and a plurality of heat passage holes 22 to allow radiant heat transfer and natural convection heat transfer to pass through the scaffold on which the user's feet 40 can be placed. ) A box-shaped scaffolding portion 4 in which are arranged,
The natural convection heat generated by the airflow through the left and right side wall plates (6a) and rear wall plates (6b) surrounding the three sides of the box body on the box-shaped scaffolding part (4) and the heat passage hole (22) of the scaffolding surface (20) enters the inner chamber closed space. An upper foot plate 6c extending to cover the user's feet 40 placed on the footrest surface 20 is formed with a convective heat flow inclined surface 7 inclined upward toward the rear wall plate 6b to be confined. A foot cover casing (6) made of stainless steel and configured to have thermal confinement by ),
It is installed in the inner space of the box-shaped scaffolding part (4) through the support bracket (30) mounted on the spacer (26) spaced apart from the scaffolding surface (20) and wraps the electric heating element (34) with a heat sink (36). A space heater 10 having a power consumption of ~ 180 W / h,
From the outside through the spacer 26 and the air flow inlet 24 that allow the space heater 10 to be spaced apart from the scaffold surface 20 in the inner space of the box-shaped scaffolding section 4 by cutting and bending the plate material. An incision 30 having an incision size that allows the inflow of air to rise toward the scaffold surface 20 and allows solid foreign matter falling from the heat passage hole 22 of the scaffold surface 20 to be discharged to the outside of the box body A spacer frame 8 configured such that the support feet 28 and the air flow inlet 24 of the box body are integrally provided;
Consists of a temperature controller 12 for adjusting the heat temperature of the space heater 10,
On the footrest surface 20 of the box-shaped footrest part 4, the heat transferred indirectly from the space heater 10 remains, providing both feet 40 of the user to feel the heat, and the footrest surface 20 of the box-type footrest part 4. ) The radiant heat of the space heater 10 passing through the plurality of heat passage holes 22 is directly transferred to the user's feet 40 placed on the footrest surface 20 and passes through the plurality of heat passage holes 22 Heat conduction, heat radiation and natural convection heat transfer combined heating stove, characterized in that the heat transferred by convection is confined in the heat confinement inner chamber of the cover casing (6) to form a thermal confinement heating composition part. delete delete

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