KR100900002B1 - Ceramic tube heater - Google Patents

Abstract

The present invention relates to a ceramic tube heater, and a protective tube made of a ceramic tubular shape, and the first direction is provided in the protective tube long along the longitudinal direction to generate heat according to the current supply and the winding direction on both sides relative to the center portion opposite to each other And a spiral heating wire formed with a winding part and a second direction winding part, a connection terminal respectively coupled to both ends of the spiral heating wire to transmit current, and a filler filled in a protective tube to provide insulation and heat storage functions.

Therefore, it is possible to implement a high exothermic temperature of 1,000 ℃ or more, the service life and durability can be very long, can exhibit the appropriate illuminance in a heated state, there is an effect that can emit a large amount of far infrared rays, which is beneficial for health promotion.

Heater, tube, ceramic, quartz, sericite, far infrared ray, heating wire, winding direction, platinum

Description

Ceramic Tube Heater {CERAMIC TUBE HEATER}

The present invention relates to a ceramic tube heater, and more particularly, it is possible to realize a high exothermic temperature of 1,000 ° C or more, and to have a very long service life and durability, to exhibit an appropriate illuminance in a heated state, and to improve health. The present invention relates to a ceramic tube heater capable of emitting a large amount of far infrared rays.

In general, there are various kinds of heaters, which are heat sources that are mounted on a heat transfer mechanism or the like and generate high heat, depending on the fuel used.

Among them, the electric heater is widely used in various advantages such that it is not necessary to replenish fuel when only electricity is supplied, so that it is convenient to use and maintains ambient cleanliness.

Electric heaters as heat sources include ceramic tube heaters, metal tube heaters, and the like, which are classified according to the material of ceramics and metals of protective tubes that surround and protect internal heating wires from the outside.

Since metal tube heaters are made of metal, the insulation of the protective tube may cause insulation problems, and the manufacturing cost is relatively high. However, ceramic tube heaters are made of ceramic and have no problem in insulation and are inexpensive. It can be manufactured at a cost.

Ceramic tube heaters are widely known as quartz tube heaters whose protective tube is made of quartz.

1 is a cross-sectional view showing a conventional ceramic tube heater of the prior art.

The ceramic tube heater 100 is a tubular shape in which a through hole is formed therein, and is made of a ceramic material in which quartz is a main component, and both ends of the ceramic tube heater are properly sealed, and a center inside the quartz tube 102. It is provided along the length of the elongated spiral heating line 104 and the heat generated in accordance with the current flow, respectively coupled to both ends of the spiral heating line 104 penetrates both ends of the quartz tube 102 and then part of the exposed outside The connection terminal 106 is connected to an external power supply device through an externally exposed part and transmits a current, and is filled in an empty space in the quartz tube 102 to fix the spiral heating wire 104 in position and provide insulation and heat storage functions. It is made of a filler 108 to provide.

The quartz tube 102 is made of a ceramic material whose main component is quartz, and both ends of the quartz tube 102 are suitably sealed using a sealing stopper 102a, insulator, or the like as the tube shape.

If both ends of the quartz tube 102 are not completely sealed by the sealing stopper 102a or the like, the spiral heating wire 104 is easily oxidized by the penetration of external moisture, and the spiral heating wire 104 and the quartz tube 102 are easily broken. Current may flow between the circuits, which may cause a short circuit.

The spiral heating wire 104 may be referred to as a filament heating element, and has a spiral shape that is repeatedly wound along one direction (clockwise or counterclockwise direction) so that the amount of heat is increased, and the pitch according to the repeating winding is the entire section. It is formed to be uniform throughout.

The material of the spiral heating wire 104 is usually made of nickel-chromium (Ni-Cr) or iron chromium (Fe-Cr), which is a resistive heating element made of metal, and generates resistance heat through the entire surface when current is supplied.

The connecting terminal 106 is provided to penetrate the sealing stopper 102a which is coupled to both ends of the quartz tube 102, that is, one end thereof is joined to one end of the spiral heating wire 104 by welding or the like and is exposed to the outside thereof. An end part is connected with the electric wire of the power supply installation side.

The filler 108 is filled in the internal space of the quartz tube 102, and provides insulation and heat storage (heat transfer) functions by excellent insulation and thermal conductivity, and also fixes the movement of the internal spiral heating wire 104 in accordance with the filling. By blocking the short (shot) caused by the movement of the spiral heating line 104.

If the filler 108 is not filled and is present as an empty space portion, the empty space portion may function as an insulating layer to block heat transfer.

As the filler 108, a powder material that can be easily filled is mainly used, and magnesia (MgO) powder, quartz powder, and the like, which have excellent insulation and thermal conductivity and can withstand high heat, are usually used.

With the above structure, when the current is supplied from the external power supply equipment through the connection terminal 106 and the current flows along the spiral heating line 104, the spiral heating line 104 which is the resistance heating element by the energization thereof. By heating to a high temperature through the entire surface, the external fluid (air or water) is heated.

However, the conventional ceramic tube heater 100 as described above has the following problems.

First, since the heating temperature obtained through one spiral heating line 104 is limited, in order to obtain a higher heating temperature, a plurality of ceramic tube heaters 100 must be used, and thus a plurality of ceramic tube heaters are used. Using the 100 has a problem of increasing the size of the apparatus employing the ceramic tube heater 100, increasing the manufacturing cost, and causing excessive power consumption during operation.

Therefore, there is always a need to obtain a higher heating temperature through one spiral heating wire 104 of the same length.

This means that as the heating temperature is increased, the utility of the ceramic tube heater 100 is greatly increased, and the energy consumption can be reduced by rapid heating. However, due to the lack of performance of the spiral heating wire 104, such excellent effects are not achieved at all. There is a situation.

In this regard, the conventional spiral heating wire 104 is formed to have a predetermined length by repeatedly winding repeatedly in either the clockwise or counterclockwise direction, and there has been no change in the configuration from the past until now.

Second, the spiral heating wire 104 made of nichrome (Ni-Cr) or iron chromium (Fe-Cr) material generates heat as the nickel and chromium components are consumed, and when all the members are exhausted, the heat is no longer used. There is a problem that is rather short, so that the use life is 3,000 ~ 7,000 hours.

Third, the quartz tube 102 is manufactured to be ceramicized by calcining heating at a temperature of 800 to 900 ° C., and thus, at an exothermic temperature higher than the calcining temperature, warpage is easily generated, broken, or flowed down, such as high. There is a problem that it cannot be used at an exothermic temperature.

That is, even if the heating temperature of the spiral heating wire 104 is implemented to be high, the quartz tube 102 is not able to endure the situation that there is a limit to increase the heating temperature.

In this case, by increasing the heat generation temperature, the utility of the ceramic tube heater 100 is greatly increased, and the energy consumption can be reduced by rapid heating. However, due to the durability of the quartz tube 102, such excellent effects are not achieved at all. It is.

Fourth, the quartz tube 102 is a black tube showing black at a low temperature, and shows a high illuminance of 30 to 50 lux and a severely 130 lux in a heated state, which causes psychological anxiety, blindness and visual impairment to a person. There is also a problem.

Fifth, although the quartz tube 102 emits far-infrared rays to some extent as it is heated, there is a problem in that it does not emit a sufficient amount to be useful for health promotion.

In other words, in recent years, people are interested in improving health, and are also often employed in devices that are used directly on the human body, such as sauna installations, bathtubs, half-baths, and foot warmers, thereby satisfying the functionalities of health promotion. In order to achieve this, a sufficient amount of far infrared rays must be emitted, but the quartz tube 102 does not emit a sufficient amount.

For reference, as is well known, far-infrared ray is an absolutely necessary light for human growth, and promotes metabolism of the human body to help activate blood circulation and cell tissues (prevention of various adult diseases such as aging, chronic fatigue), It eradicates the causative agents of various diseases and provides various usefulness such as pain relief, heavy metal removal, sound sleep, antibacterial and air purification.

Sixth, the quartz tube 102 is not so dense material that absorbs the external moisture well in the low temperature state, the process of evaporating the absorbed moisture evaporated as the temperature is high, resulting in low durability itself, the interior of the moisture There is also a problem that causes oxidation and leakage of the spiral heating wire 104 as a penetration.

That is, as the moisture absorption of the quartz tube 102 is high, the overall durability of the ceramic tube heater 100 is greatly damaged.

In addition, since the humidity is weak, it prevents the ceramic tube heater 100 from being used smoothly in a high humidity environment, such as a sauna installation, a bath, a half-bath, and a foot temperature heater.

The present invention was devised to solve the above problems, and provides a ceramic tube heater capable of generating higher high heat through one spiral heating wire of the same length and significantly increasing the service life of the spiral heating wire. Its purpose is to.

In addition, another object of the present invention is a ceramic tube that the ceramic tube can withstand even higher heating temperature, is strong in humidity, exhibits appropriate roughness in a heated state, and can emit a large amount of far infrared rays in use. To provide a heater.

The above objects and various advantages of the present invention will become more apparent from the preferred embodiments of the present invention by those skilled in the art.

Ceramic tube heater of the present invention for achieving the above object is a protective tube made of a tubular ceramic material; A spiral heating line provided in the protective tube in a lengthwise direction to generate heat according to a current supply, and a first direction winding part and a second direction winding part having opposite winding directions on both sides of the center part; Connection terminals respectively coupled to both ends of the spiral heating wire to transfer current; And a filler filled in the protective tube to provide insulation and heat storage. It includes.

Preferably, the low resistance metal piece is provided to connect the first direction winding portion and the second direction winding portion therebetween and made of a material having a lower resistance than the spiral heating wire; It may further include.

Also preferably, the helical heating wire is made of nichrome (Ni-Cr) or iron chromium (Fe-Cr), and the low-resistance metal piece is made of a base material of nichrome (Ni-Cr) or iron chromium (Fe-Cr). The material may further contain a platinum component.

Also preferably, the platinum component may be contained in 2 to 3% by mass.

Also preferably, the protective tube may be a sericite tube containing sericite as a main component.

Also preferably, the sericite tube may be prepared by mixing and molding 55 to 85 mass% of sericite, 45 to 15 mass% of a mixture of clay and silica, which are binders, and heating.

Also preferably, when one of the winding directions is a clockwise direction, the other winding direction may be a counterclockwise direction.

According to the present invention, by using a single spiral heating wire of the same length can produce a heat generation temperature increased by about 20% compared to the existing, there is no need to use a plurality of ceramic tube heaters in order to obtain a higher heat generation temperature miniaturization of electric heating equipment The effect can be achieved to achieve a reduction in manufacturing and maintenance costs.

In addition, according to the present invention, a low-resistance metal piece based on the same material as the spiral heating wire is provided so as to be interposed in the center of the spiral heating wire, so that nickel and chromium consumed for heat generation can be additionally supplied, thus providing a useful life of the spiral heating wire. This greatly increased effect can also be achieved.

In addition, according to the present invention, since the conventional quartz tube can only withstand a heating temperature of about 900 ° C., the sericite tube can smoothly withstand a higher heating temperature of 1,000 ° C. or more, thereby providing excellent durability. In addition, the effect that can contribute to the high performance of the ceramic tube heater can also be achieved.

Furthermore, according to the present invention, since the sericite tube has a very low moisture absorption rate at a low temperature without being heated, it provides excellent durability in this respect, and the effect of preventing oxidation and heating of the heating wire caused by moisture penetration. Can also be achieved.

Furthermore, according to the present invention, since the appropriate illuminance can be exhibited in the heated state, the effect of not causing glare or visual impairment can be achieved while giving a calm feeling to a person.

Furthermore, according to the present invention, since it can radiate a large amount of far-infrared rays, which are beneficial for health promotion in a heated state, it is also beneficial for the user's health improvement, and also can be smoothly employed for sauna installation, bathtub, half-bath, foot warmer. Can be achieved.

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

Prior to the description, the same reference numerals are given to the same components as in the prior art, and detailed description thereof will be omitted.

2 is a cross-sectional view illustrating a ceramic tube heater according to a preferred embodiment of the present invention.

The ceramic tube heater 100 ′ according to the present invention has a tubular shape made of a ceramic material whose main component is sericite, and both ends of the ceramic tube heater 100 ′ are suitably sealed and a sericite tube ( 102 ') The first direction winding part 104a' and the second direction winding part 104b which are provided in the center in the longitudinal direction along the length direction and generate heat according to the current flow, and the winding directions are opposite to each other with respect to the center part. ') Is formed in each of the spiral heating wire 104' and the both ends of the spiral heating wire 104 'and penetrates both ends of the serisite tube 102', and then a part thereof is externally exposed and through the externally exposed portion. Filling material that is connected to the external power supply equipment and transmits the current, and the filling material filled in the empty space in the sericite tube 102 'to fix the spiral heating wire 104' and to provide insulation and heat storage function 108.

In addition, the ceramic tube heater 100 ′ according to the present invention includes a center portion of the spiral heating wire 104 ′ so as to connect the first direction winding part 104 a ′ and the second direction winding part 104 b ′ on both sides thereof in the middle. It may further include a low resistance metal piece (110 ') is provided to be interposed and formed of a material having a lower resistance than the spiral heating line (104').

The sericite tube 102 'is a protective tube made of a ceramic material that surrounds and protects the spiral heating wire 104' and the filler 108 from the outside.

The sericite tube 102 'is able to withstand smoothly even higher heat and high temperature, exhibits moderate roughness in a heated state, has a very low moisture absorption in low temperature, and also has excellent moisture barrier properties. As it is heated, it is possible to emit a sufficient amount of far infrared rays, which is beneficial to the human body.

Sericite is a mineral called mica, which is very soft and widely used in women's cosmetics because of its high skin adhesion and non-toxic properties.

The sericite tube 102 'may be manufactured by using a combination of clay and silica (SiO ₂ ) as a binder, together with the sericite main component.

That is, the sericite component itself is weak in bonding strength to each other, difficult to form into a desired tubular shape, and can be easily broken in the process of ceramicization by heating and poor durability due to lack of strength in use, Use clay and silica together.

The preparation is performed by mixing the sericite powder, which is powdered into a fine powder, and the clay clay powder and the silica powder as a fine powder at an appropriate mixing ratio, and kneading by adding water for the dough to the powder mixture, and then kneading the dough. By forming a tubular shaped body, and then calcining the molded body at a temperature of 1,000 ° C. or higher, especially 1,300 ° C. or higher, which is a very high temperature, to produce a ceramic.

Here, the mixing ratio of the sericite powder and the binder powder can be set to 55 to 85 mass% of the sericite powder and 15 to 45 mass% of the sum of the clay powder and the silica powder.

If the mixing ratio of the sericite powder is less than 55% by mass, it is not preferable because the far-infrared emissivity does not sufficiently occur as it is heated when manufactured and used, whereas if the mixing ratio exceeds 85% by mass, the binder The amount is too small to produce the desired strength.

As described above, the sericite tube 102 'can withstand an exothermic temperature of about 1,300 ° C when the secondary heating for the ceramicization is performed at 1,300 ° C or more, which is very high temperature, and this is a conventional quartz. It can be said that the pipe is able to endure up to 800 ~ 900 ℃ degree significantly compared to performance.

In addition, the sericite tube 102 'is a white tube which shows white as compared with the conventional quartz tube 102 which is a black tube which shows black at low temperature, and shows the low roughness of about 15-30 lux in a heated state, By visually showing the most acceptable red color when observed with the naked eye, it provides a calm feeling and may not cause glare or visual impairment at all.

In addition, the sericite tube 102 'has a very low moisture absorption rate at low temperature, and can have excellent durability and lifespan on its own, and also has excellent moisture barrier property, so that the helical heating wire 104 is oxidized in accordance with moisture penetration. It is possible to smoothly block the occurrence of a short circuit.

Furthermore, the sericite tube 102 ′ can radiate an amount of far infrared rays that is tens of times larger than the elvan as it is heated to a high temperature, thereby providing a certain far infrared effect to benefit the human body.

In relation to the serisite tube 102 ′ according to the present invention, as well as excellent moisture barrier property, it can radiate a large amount of far-infrared rays, so that it can be exposed to water or moisture, such as a sauna installation, a bathtub, a half-bath and a foot temperature heater. It can be easily adopted and used in devices that are used directly for humans as they are exposed.

Meanwhile, the spiral heating wire 104 ′ may basically be formed of a nichrome (Ni-Cr) or iron chromium (Fe-Cr) material as before, and the filler 108 may also have magnesia (MgO) powder or quartz as before. Powder can be used.

The spiral heating line 104 ′ has been conventionally continuously wound in the same winding direction in either the clockwise or counterclockwise direction over the entire length. In the present invention, the winding directions on both sides of the spiral portion are different from each other. That is, the first direction winding portion 104a 'and the second direction winding portion 104b' are formed on both sides of the central portion with opposite winding directions.

2 to 4 illustrate an example in which the winding direction of the first direction winding part 104a 'is clockwise and the winding direction of the second direction winding part 104b' is counterclockwise. It was.

As such, when the winding directions of both sides are formed to be opposite to each other with respect to the center part, the amount of heat generated may be increased by about 20% compared with the conventionally formed one direction.

That is, when the same current is energized for the same length, if one direction can generate 1,100 ° C., the winding direction may be opposite to each other, as in the present invention, and may exhibit a heat generation temperature of about 1,350 ° C. FIG.

Of course, as the amount of heat generated increases, it may be possible to achieve a high temperature rise within a short time.

Therefore, according to the present invention, since it is possible to produce a high heat generation temperature, there is no need to use a plurality of ceramic tube heaters in parallel in order to obtain a higher heat generation temperature, thereby minimizing the size of the heat transfer device and reducing the manufacturing cost. In addition, it is possible to achieve a high temperature increase, such as to reduce the maintenance cost by reducing the power consumption.

However, when the winding directions on both sides are opposite to each other, the amount of heat is increased, but the central portion in which the winding direction is changed is not maintained for a long time and is easily disconnected and ruptured.

Therefore, in order to prevent the rupture, a low resistance formed of a material having a lower resistance value than the spiral heating wire 104 'at the central portion connecting the first direction winding part 104a' and the second direction winding part 104b 'on both sides. It connects through the metal piece 110 '.

As such, when the low resistance metal piece 110 ′ is interposed in the central portion, the central portion can be kept durable for a very long time.

The low-resistance metal piece 110 'is basically made of chromium (Ni-Cr) or iron chromium (Fe-Cr), which is the material of the spiral heating wire 104', and is a component that can lower the resistance thereof. It may be formed of a material further containing Pt).

Preferably, the platinum component may further contain about 2 to 3% by mass.

Thus, when the basic material of the low resistance metal piece 110 'is made of the same nichrome (Ni-Cr) or iron chromium (Fe-Cr) as the spiral heating line 104', the durability test results show that the spiral heating line 104 ' It can be seen that the service life is significantly extended to 15,000 to 25,000 hours compared to the existing 3,000 to 7,000 hours.

This, in the case of the spiral heating wire 104 ′ generates heat as the nickel and chromium components contained therein are consumed, and when all of the components are exhausted, the heat is no longer generated and is cut off. According to the present invention, the low-resistance metal piece ( It is believed that the life span is greatly extended by the replacement of the nickel and chromium components contained in 110 ').

Specifically, the low-resistance metal piece 110 'is made of a ring shape, as shown in Figs. 3 and 4, and is helical by compressing both ends in a state in which one end of the helical heating wire 104' is inserted in both ends thereof. It may be connected to the heating line 104 '.

In addition, the low-resistance metal piece 110 'may be provided with a weight of about 3 g based on a power consumption of 1,000 w.

Finally, according to the present invention, the spiral heating wire 104 'can produce a heat generation temperature increased by about 20% compared to the conventional, and the sericite tube 102' can withstand a very high temperature of about 1,300 ℃. As a result, overall improved heat generation performance can be provided.

In the foregoing description, it should be understood that those skilled in the art can make modifications and changes to the present invention without changing the gist of the present invention as merely illustrative of a preferred embodiment of the present invention.

1 is a cross-sectional view showing a conventional ceramic tube heater,

2 is a cut cross-sectional view showing a ceramic tube heater according to a preferred embodiment of the present invention;

3 is an exploded perspective view illustrating a spiral heating line part provided in the ceramic tube heater according to the preferred embodiment of the present invention;

4 is a perspective view illustrating a spiral heating wire portion provided in the ceramic tube heater according to the preferred embodiment of the present invention.

<Description of the symbols for the main parts of the drawings>

100 ': Ceramic tube heater 102': Sericite tube

102a: sealing plug 104 ': spiral heating wire

104a ': first direction winding 104b': second direction winding

106: connection terminal 108: filler

110 ': Low resistance metal piece

Claims (7)

A protective tube made of a tubular ceramic material; A spiral heating line provided in the protective tube in a lengthwise direction to generate heat according to a current supply, and a first direction winding part and a second direction winding part having opposite winding directions on both sides of the center part; A low resistance metal piece provided to connect the first direction winding part and the second direction winding part therebetween and made of a material having a lower resistance value than the spiral heating wire; Connection terminals respectively coupled to both ends of the spiral heating wire to transfer current; And Filling material is filled in the protective tube to provide insulation and heat storage function; Ceramic tube heater comprising a. delete The method of claim 1, The spiral heating wire, Ni-chromium (Ni-Cr) or iron chromium (Fe-Cr) material, The low resistance metal piece, Ceramic tube heater, characterized in that the platinum material is added to the basic material of nichrome (Ni-Cr) or iron chromium (Fe-Cr). The method of claim 3, wherein The platinum component, Ceramic tube heater, characterized in that it contains 2-3% by mass. The method of claim 1, The protective tube, A ceramic tube heater comprising a sericite tube having sericite as a main component. The method of claim 5, wherein The serisite tube, A ceramic tube heater produced by mixing, shaping and heating 55 to 85 mass% of sericite and 45 to 15 mass% of a mixture of clay and silica as a binder. The method of claim 1, The first direction winding and the second direction winding, And if one winding direction is clockwise, the other winding direction is counterclockwise.

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