KR100852005B1 - Two face hand stove with air-pass - Google Patents

Abstract

A double-sided hand warmer having an air circulation passage is provided to overcome limitation in available heat generation temperature of a hand warmer by raising the adiabatic efficiency between the heat generating unit and the secondary cell. A double-sided hand warmer having an air circulation passage comprises a secondary cell(102) for outputting driving voltage, and first and second heat generating units(108,116) for generating heat by receiving the driving voltage. A first hole(H1) is formed between the secondary cell and the first heat generating unit to introduce or discharge external air. A second hole(H2) is formed between the secondary cell and the second heat generating unit to introduce or discharge the external air. Insulation members(104,106) seal the surface of the first heat generating unit. Insulation units(112,114) seal the surface of the second heat generating unit. An outer housing(100) surrounds the outer surface of the insulation members and the insulation units to support the first and second holes, and the insulation members. The outer housing includes material having high heat conductivity.

Description

Two face hand stove with air-pass}

1 is an external perspective view of a hand stove according to a preferred embodiment of the present invention.

2 is a longitudinal sectional view of a hand stove according to a preferred embodiment of the present invention.

Figure 3 is a cross-sectional view of the heating wire and the insulating material of the hand heater according to a preferred embodiment of the present invention.

Figure 4 is a block diagram of a hand stove according to a preferred embodiment of the present invention.

5 is a view showing a secondary battery charging state guide example according to a preferred embodiment of the present invention.

The present invention relates to a hand heater, and more particularly, to a hand heater for heating the heating wire by employing a lithium ion secondary battery.

Conventional hand stoves have been troublesome in use such as fuel injection or fire generation due to ignition of fuel such as lighter oil, and in order to solve these problems, recently, hand heaters have been developed and commercialized by supplying power to heating wires. It came to be. In particular, recently, a hand stove has been proposed to increase the use time by using a lithium ion secondary battery employed in a mobile communication terminal.

However, in the lithium ion secondary battery, as the ambient temperature of the heating hand heater is raised, the amount of charge suddenly decreases and the operation state is also very unstable, and there is a limit in raising the heating temperature of the hand heater.

Therefore, the development of a technology that can overcome the limitation of the heat generation possible temperature for the hand-held stove employing a conventional lithium ion secondary battery is urgently desired.

In order to solve the above problems of the prior art of the present invention, between the heat generating unit and the secondary battery of the hand heater and the passage that can receive the cold outside air and the cold air in winter and the passage which can flow the internal air to the outside By forming an air circulation path, it is possible to improve the thermal insulation effect between the heat generating unit and the secondary battery to prevent the reduction of power charging capacity of the secondary battery of the hand heater, and to provide a hand heater that can overcome the limitation of the heat generation possible temperature. The purpose.

A hand stove according to the present invention for achieving the above object and to solve the problems of the prior art, the secondary battery for outputting a charged voltage as a drive voltage; Heat generating parts that receive heat from the secondary battery and generate heat, and are installed on upper and lower surfaces of the secondary battery; Holes forming air circulation paths between the secondary battery and the heat generating parts to enable inflow of external air and outflow of internal air; And an outer housing made of a high thermal conductivity material surrounding the outer surfaces of the heat generating parts and supporting the holes and the secondary battery.

The present invention forms an air circulation path in which external air is introduced between the heat generating unit and the secondary battery of the hand heater to improve the heat insulation effect between the heat generating unit and the secondary battery, thereby overcoming the limitation of the heat generation temperature of the hand heater. To do it.

1 is a perspective view showing an external appearance of a stove according to a preferred embodiment of the present invention, Figure 2 is a longitudinal sectional view of a stove according to a preferred embodiment of the present invention, Figure 3 is according to a preferred embodiment of the present invention The cross-sectional view of the heating wire and the insulating material of the stove.

1 to 3 will be described the structure of the hand heater according to the present invention.

In the central portion of the outer housing 100 of the hand heater, a thin polyhedron-shaped lithium ion secondary battery 102 having a thin thickness and a wide top and bottom surfaces is positioned.

First and second holes H1 and H2 are disposed at upper and lower sides of the secondary battery 102 for inflow of external air and outflow of internal air. The first and second holes H1 and H2 are for forming first and second air circulation paths between the secondary battery 102 and the first and second heating elements 108 and 116. It has an area corresponding to the upper side and the lower side, and has a thickness of at least 1 [mm] or more. The first and second air circulation paths formed by the first and second holes H1 and H2 are introduced with external air at a lower temperature than the internal air heated by the first and second heating elements 108 and 116. At the same time, the internal air flows out to block heat generated by the first and second heating elements 108 and 116 from being supplied to the secondary battery 102.

In addition, first and second insulations 110 and 118 are provided outside the first and second holes H1 and H2, respectively, and the first and second insulations 110 and 118 are also provided with the first and second heating elements The heat generated by 108 and 116 is blocked from being supplied to the secondary battery 102.

As described above, the present invention has the first and second air circulation paths generated by the first and second holes H1 and H2 and the double insulation structure by the first and second insulation materials 110 and 118. Maximizes the thermal insulation effect between the first and second heating elements 108 and 116 and the secondary battery 102.

In addition, the first heat generating part 108 and the third and fourth insulating parts 112 and 114 embedded in the first and second insulators 104 and 106 are formed outside the first and second insulating materials 110 and 118, respectively. Two heat generating unit 116 is provided.

The first and second heat generating parts 108 and 116 are heating wires such as nickel-chromium wire, and the upper and lower surfaces thereof are sealed with the first and second insulators 104 and 106 and the third and fourth insulators 112 and 114, respectively. Prevent the risk of fire or electric shock that may be a concern if exposed.

The outer housing 100 is positioned outside the first and second heat generating parts 108 and 116, and the outer housing 100 directly transmits heat generated from the first and second heat generating parts 108 and 116 to the user. In order to transmit, metal materials, such as stainless and aluminum, which have high thermal conductivity, are adopted.

The circuit configuration of the hand stove having the structure as described above will be described in detail with reference to FIG.

 The hand heater (HH) according to the preferred embodiment of the present invention is the secondary battery 102, the first and second heat generating parts 108, 116, the 20-pin integrated connector 120, the switch 122, the charge state detector 124 ), And the charging voltage display unit 126.

The secondary battery 102 of the hand stove (HH) is charged through the charging device 200 for charging the secondary battery of a typical portable terminal.

The charging device 200 is supplied with commercial power to transform the charging voltage for the secondary battery, the charging voltage for the secondary battery through the 20-pin integrated connector 204 to the 20-pin integrated connector 204 of the hand stove (HH). Supply.

The secondary battery 102 of the hand stove HH receives the charging voltage drawn from the charging device 200 through the 20-pin integrated connector 120 to perform charging, and the charging voltage is switched to the switch 122. The hand heater HH is turned on by supplying the first and second heat generating parts 108 and 116 as a driving voltage according to the operation), or the hand heater HH is turned off by blocking the supply thereof. The secondary battery 102 preferably has a capacity of 5 [V] and 1000 [mAh].

The switch 122 is turned on according to a user's manipulation to connect the secondary battery 102 and the first and second heat generating units 108 and 116 so that the driving voltage from the secondary battery 102 is increased. To be supplied to the second heat generating parts 108 and 116 or turned off according to the user's operation to cut off the secondary battery 102 and the first and second heat generating parts 108 and 116 to drive the voltage from the secondary battery 102. The supply of the first and second heat generating parts 108 and 116 is blocked.

In addition, the on / off signal according to the operation of the switch 122 is provided to the state of charge detection unit 124.

The first and second heat generating units 108 and 116 employ heating wires and the like, and generate heat by receiving a driving voltage from the secondary battery 102. Here, the secondary battery 102 has a capacity of 5 [V], 1000 [mAh], and the first and second heat generating units 108 and 116 are configured to generate heat at about 0.05 [W / cm ² ]. In this case, the secondary battery 102 may supply a driving voltage to the first and second heat generating units 108 and 116 for at least 4 hours when fully charged.

The charging voltage detection unit 124 detects whether the 20-pin integrated connector 120 is connected, and when the 20-pin integrated connector 120 is connected, the secondary battery 102 detects the charging voltage, and the detected charging voltage Provides a display signal according to the state of charge display unit 126. Here, as shown in FIG. 5, the charge voltage detector 124 provides a display signal to the charge state display unit 126 to display green when the detected charge voltage is a full charge voltage, and the detected charge. When the voltage is not a full charge voltage, a display signal for displaying red is provided to the charge state display unit 126.

In addition, the charging voltage detector 124 checks whether an on signal of the switch 122 is provided. When the on signal of the switch 112 is provided, the secondary battery 102 detects a charging voltage. The charging state is determined according to the detected charging voltage, and a display signal indicating the charging state is provided to the charging state display unit 126. That is, as shown in FIG. 5, the charging voltage detection unit 124 provides a display signal to the charging state display unit 126 to display light green when the detected charging voltage is greater than the first voltage close to full charge. And when the detected charge voltage is less than the first voltage and greater than a second voltage close to the maximum discharge voltage, a display signal for displaying yellow color is provided to the charge state display unit 126, and the detected charge voltage When the voltage is less than the second voltage, a display signal for displaying orange is provided to the charge state display unit 126.

The charging state display unit 126 includes LEDs of three primary colors and a driving circuit for driving the LEDs to display the red, green, light green, yellow, and orange colors. The LED driving circuit outputs the red, green, light green, yellow, and orange light by controlling the amount of light of the LEDs of the three primary colors according to the display signal from the charging voltage detector 124. According to the light output of the red, green, light green, yellow, and orange, the user may recognize the state of charge of the secondary battery, the state of full charge, and the discharge of the secondary battery according to use.

In the above-described preferred embodiment of the present invention, the charging and discharging of the secondary battery is illustrated as three primary color LEDs. It is also apparent to those skilled in the art by the present invention.

In addition, although the external shape of the hand stove having the air circulation in Figure 1 is also shown in the form of a rectangle, it may have a ball-shaped or short length of the longitudinal diameter, the shape of the oval (cross-sectional shape) having a large length of the horizontal diameter. Is apparent to those skilled in the art by the present invention.

In addition, as well as the 20-pin integrated connector 120 for charging the heater, charging in the form of a USB connector is apparent to those skilled in the art by the present invention.

The present invention forms an air circulation path through which external air is introduced and internal air flows out between the heat generating unit and the secondary battery of the hand stove, thereby improving the thermal insulation effect between the heat generating unit and the secondary battery and limiting the heat generation temperature of the hand stove. To overcome.

In addition, the present invention may further include a heat insulator that performs heat insulation together with the air circulation path between the heat generating unit and the secondary battery of the hand heater, thereby improving the heat insulating effect between the heat generating unit and the secondary battery.

As described above, the present invention has been described by way of limited embodiments and drawings, but the present invention is not limited to the above-described embodiments, which can be variously modified and modified by those skilled in the art to which the present invention pertains. Modifications are possible.

Accordingly, the spirit of the present invention should be understood only by the claims set forth below, and all equivalent or equivalent modifications thereof will belong to the scope of the present invention.

Claims (4)

In a hand stove, A secondary battery for outputting a charged voltage as a driving voltage; A first heating unit and a second heating unit which generate heat by receiving a driving voltage from the secondary battery and are respectively installed on upper and lower surfaces of the secondary battery; A first hole formed between the secondary battery and the first heat generating part to allow the outside and air to flow in or out; A second hole formed between the secondary battery and the second heat generating part to allow the outside and air to flow in or out; And An insulator which is bound to upper and lower surfaces of the first heat generating part and seals a surface of the first heat generating part; An insulation part which is bound to upper and lower surfaces of the second heat generating part to seal a surface of the second heat generating part; An outer housing made of a high thermal conductivity material surrounding the outer surface of the insulator including the first heat generating unit and the insulator including the second heat generating unit and supporting the first hole, the second hole, and the secondary battery; And the first hole and the second hole form air circulation paths through which external air flows in from the outside of the outer housing and the internal air flows out of the outer housing. And a heat generated from the heat generating unit and the second heat generating unit to the outside of the outer housing. The double-sided hand heater of claim 1, further comprising a 20-pin standard integrated connector connecting the secondary battery and the charging device. The heat insulating material of claim 1, further comprising heat insulating materials positioned between the first heat generating part sealed by the insulator and the air circulation path and between the second heat generating part sealed by the insulating part and the air circulation path. Two-sided hand stove characterized in that. The display device of claim 1, further comprising: a charge voltage detector configured to detect a charge voltage of the secondary battery and generate a display signal indicating a state of charge of the secondary battery; And a display unit for guiding the state of charge of the secondary battery according to the display signal from the charge voltage detection unit.

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