• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceramic heater using a ceramic heating element, and replaces the nichrome wire sheath heater that has been used so far. The present invention uses a PTC (Positive Temperature Coefficient) Thermistor, which is a semiconducting ceramic.Therefore, there is no short circuit due to disconnection of the heating element itself like nichrome wire, and since it is an oxide from the beginning, there is no change over time such as resistance change due to oxidation. It is constant, semi-permanent, and reproducible, and it also has an automatic control function that automatically switches when the PCT element itself reaches a certain temperature, so there is no problem such as fire due to overheating. The present invention provides a heater incorporating a ceramic heating element capable of miniaturization and light weight since the off device can be omitted. In the configuration of the present invention, the heating element is inserted into and fixed to the hole of the insulating plate which is punctured at regular intervals, and the electrode metal plate is closely attached to the upper and lower sides to connect the electric lead wires. A metal spacer for facilitating heat conduction to the pipe is placed above and below the outer side of the insulating film, and then the pipe is welded or crimped, and the electrical lead wire portion is insulated and rubber-packed to a completely enclosed ceramic underwater heater.
    公开号:KR19990015033A
    申请号:KR1019970036914
    申请日:1997-08-01
    公开日:1999-03-05
    发明作者:김광진；이종찬；조성률；박태원；김대업
    申请人:이종구；한국생산기술연구원；박태원；주식회사 엔테크；
    IPC主号:
    专利说明:

    Ceramic underwater heater
    The present invention relates to a use invention which uses the principle of 1966 patent application No. 77638 filed by the applicant and improves its effect by supplementing some disadvantages of the present invention, that is, a ceramic heater with a built-in ceramic constant temperature heating element. Specifically, it is a kind of underwater heater that is used for industrial and various household goods, and it is designed to heat various liquids in liquid. Specific uses include vending machines, sterilizers, coffee pots, simple heaters, and steam humidifiers. As a ceramic underwater heater that can be widely applied to a ceramics, etc., since it uses a constant temperature heating element ceramic element, it is an artificial intelligent small heater which can control the heating temperature itself, and is a semi-permanent small heater which is free from corrosion due to various liquids.
    Conventional heaters are mostly sheath heaters using metal nichrome wire as a heating element.
    Since the nichrome wire sheath heater is composed of one element of the electric circuit, the nichrome wire, which is a heating element, causes thinning of the wire due to an oxidation reaction, which is a kind of change over time, and the change of resistance causes the physical property of the heating element to change, thereby precisely controlling temperature. If the fall and the life is short, and any part of the heating element is disconnected during use, the entire heater loses its function.
    In addition, since the metal wire has only a function of a simple inventor, a separate device for temperature control has to be mounted, and thus, a large number of parts as a whole heater and a device have to be enlarged.
    In order to make up for the shortcomings of the metal wire sheath heater, the water heater using the ceramic constant temperature heating element as described above has been developed, which mainly includes a disk-shaped steam heater suitable for steam humidifier, air conditioner humidifier and hot water heater. .
    Disc type underwater heater has a structure that inserts heater at the bottom of the container containing the liquid to be boiled and is designed to be heated from the bottom of the liquid to escape the steam upwards.
    Such a structure is an ideal structure for a humidifier and the like, but there are many problems in applying a disc ceramic heater directly to a vending machine and a temperature tank of a water purifier, which is a method of inserting a liquid into the liquid from the top of the container.
    Therefore, in order to replace and use the ceramic heater in this kind of apparatus that has used the conventional nichrome wire sheath heater, it is inevitable to change the design, shape, circuit, and the like around the heater tank, and thus has a disadvantage in that it cannot be replaced as it is.
    An object of the present invention for solving the conventional problems as described above is to insert and replace with the present invention ceramic heater instead of the metal wire sheath heater in the same size and shape as well as the electric circuit in order to completely replace the nichrome wire sheath heater It is to provide a new concept of ceramic underwater heater to be made.
    In order to achieve the above object, in the present invention, the insulation and encapsulation of a PTC ceramic element having a heating effect of a surface temperature of 100 ° C. or higher, an electrically conductive metal plate, an electric insulation plate, a metal spacer, a heat sink, an electric lead wire, and an electric lead wire portion having a predetermined thickness Insulating rubber, screw bolts, etc. for fixing, but the structure of the structure is inserted into the hole of the insulating plate which can be fixed to insert the ceramic element, the ceramic heating element element coated on both sides of the electrode is fixed, Pull out the lead wire long so that the electric wire can be supplied from the outside by closely contacting the metal plate, and insulate by putting a thin insulating film on the top and bottom of the metal plate again, and then insulate the metal spacer to fit the round pipe Lay them up and down the outside of the film, respectively, and then weld or The upper and lower pipes are crimped to improve heat conduction and to be completely sealed to prevent external liquid from penetrating into the inside.
    The pulled out part of the electrical lead wire is achieved by providing a fully enclosed ceramic heater so that the rubber packing and bolts fix the heater so that the liquid can be heated through a pipe that acts as a heat sink without being penetrated into the liquid.
    1 is a change diagram of the resistance according to the temperature of the positive temperature coefficient thermistor (Thermistor)
    2 is a diagram illustrating various shapes of positive temperature coefficient thermistor ceramic elements;
    3A and 3B are shape diagrams of ceramic heaters
    4A and 4B are structural exploded views of a ceramic heater
    5 is an embodiment of heating the water temperature of the ceramic heater
    * Description of the symbols for the main parts of the drawings *
    1: Housing case (heat sink) 2: Metal spacer
    3: metal electrode plate 4: PTC thermistor ceramic element
    5: Insulation plate 6: Electric lead wire
    7: insulation film 8: insulation packing
    9: bolt 10: rubber packing
    11: Nut 12: Washer
    The present invention will be described in detail with reference to the accompanying drawings.
    Figure 1 is a typical curve of the resistance change with respect to each temperature of the PTC (Positive Temperature Coefficient) thermistor (ceramic constant temperature heating element) used in the present invention, the resistance suddenly jumps from tens of ohms to millions of ohms in a certain temperature range Since it has a power supply, the electric circuit can be used as a switching role that does not suddenly shed electricity.
    Therefore, there is no need for a separate control device to maintain a constant temperature and there is no risk of fire since the temperature does not rise above the flash point (about 600 ° C.).
    Figure 2 shows the various shapes of the PTC ceramic element applied to the heater of the present invention, in addition to the disk disk, it may be produced in accordance with the shape of various heaters, such as square plate, trapezoidal, square rod, cylindrical rod, round pipe, half ring type. The electrode may be formed on both the upper and lower sides, the inner and outer surfaces, and the left and right side surfaces.
    Figure 3a shows the shape of the ceramic heater, pipe-shaped, round or square combined multi-type, aluminum heat sink is a pipe type having a protrusion, multiple pipe-type multi-pipe type, round to elliptical rod and the thickness is thick before the point It can be manufactured in the appropriate shape corresponding to the application equipment such as conical round or thin round bar, square bar and trapezoidal round bar.
    4A and 4B show the structure of a ceramic heater as an example. The heat dissipation and encapsulation unit 1, the spacer unit 2, the insulation unit 5, the electrode unit 3, the heat generating unit 4, and the electric lead wire are shown. It consists of the parts 6.
    The heat dissipation and encapsulation portion also serves as a housing case 1 in which a heat-resistant metal pipe or a circular metal plate is press-molded up and down and welded, and the shape may be variously selected such as round rods, elliptic rods, and square rods according to the use (FIG. 2).
    In order to improve heat conduction with the circular metal pipe or the circular metal plate, a suitable spacer 2 is inserted therein, and a thin insulating film 7 is inserted therein to insulate the inner metal electrode plate 3 while transferring heat. do.
    Since the electrode part 3 becomes a common electrode when several PTC elements are used as a metal electrode plate, it is comprised in two poles in close contact with the electrode surface formed in both surfaces of the element.
    If necessary, it may be formed in three poles with water.
    The heat generating portion 4 is a PTC element, and is inserted into and fixed to an insulating plate that is punctured according to the shape and size of the element.
    What is necessary is just to select a suitable size, thickness, etc. according to the objective for a PTC element (FIG. 2).
    The PTC element can be selected by generating a heating temperature or surface temperature by changing the constant temperature constant and the transition temperature as necessary. For example, the PTC element can be selected from about 60 ° C to about 300 ° C, and the quantity can also be determined according to the capacitance to be used. .
    Meanwhile, the electric lead wire 6 is connected to the electrode plate, and the lead wire drawn out is pulled out to the outside of the heater housing case, which is a heat dissipation and encapsulation part, and then fixed with an insulating packing 8, a bolt 9, and a rubber packing 10. The liquid was not allowed to enter inside even in the liquid.
    In addition, the structure has the advantage that the disassembly of the heater is simply possible if necessary.
    Referring to the operation of the present invention.
    In the ceramic heater according to the present invention, when a direct current or alternating voltage is applied to the lead wire, it is energized by a PTC element, which is a constant temperature heating element, and the temperature rises while the element generates heat. Between about 120 ° C and 300 ° C), as the resistance of the PTC device suddenly increases exponentially, no electricity flows and the device starts to cool down, and the temperature of the device continues to cool down to a temperature below the transition temperature. When the increased resistance is lowered again, the electricity flows again, and the device generates heat again and continuously repeats its own switching phenomenon in which the temperature rises, that is, the device itself has an artificial heating element that automatically maintains a constant temperature range.
    The ceramic heater of the present invention uses the heat generation phenomenon of the artificial intelligent PTC device, but a thin insulating film is inserted on the outside of the device, but the heat conduction is sufficiently possible, so that the heat through the insulating film is returned to the surface of the case housed by the metal spacer. Transferred and dissipated.
    That is, the underwater heater heats the liquid due to heat radiated from the surface of the housing case. The heating rate or heating capacity can also be adjusted by the physical properties and quantity of the heating element.
    The heating temperature matches the surface temperature of the heating element according to the application.
    For example, if you want to keep only about 80 ℃ without boiling water, you can use a heating element having a surface temperature of less than 100 ℃.
    Since the material of the housing or the heat dissipation pipe is made of metal which does not corrode in water, there is no corrosion by liquid and the thermal conductivity is good.
    Such embodiments of the present invention are illustrated below.
    Example
    The water temperature change with time is shown when this ceramic heater which incorporated eight constant temperature heating PTC elements 4 was heated 800 CC of water using about 500W of electricity (FIG. 5).
    As a result, after about 8 minutes, it reached the boiling point of water to 100 ° C. and boiled the water within a short time, which was more than a conventional nichrome wire sheath heater.
    Therefore, the present invention is an artificial heater that can be used to replace the nichrome wire sheath heater that has been used the most until now without any modification, and using a constant-temperature heating element PTC ceramic element itself automatically maintains a constant temperature range Since it is possible to omit a separate temperature control device when constructing the entire heater, it is possible to reduce the size and weight, and since the heating element is an oxide from the beginning, the wire diameter / width due to oxidation is narrowed like the nichrome wire. Since there is no change in resistance, there is little change in resistance and good reproducibility enables precise control.
    In addition, the power of the heater is one of the big advantage that the separate parts for this can be used, since both can be used without distinguishing DC / AC and 110V / 220V.
    In addition, since the heat generation temperature of the heating element is between about 100 ° C. and 300 ° C., only the temperature below the ignition point is maintained, there is no redness of the heater, and there is no risk of fire, so the stability is very high.
    In addition, since there is no switching contact for on / off on the circuit, there can be no contact failure and spark phenomenon due to the contact, and it is the most optimal heater for continuous operation for 24 hours continuously.
    权利要求:
    Claims (4)
    [1" claim-type="Currently amended] In the underwater heater using a constant temperature radiator PTC thermistor element,
    It is largely composed of heat generating and sealing part 1, spacer part 2, insulating part 5, electrode part 3, heat generating part 4 and electric lead wire part 6, and having no heat resistance and corrosion. Metal housing case and heat sink (1) and spacer (2), electrically insulating film (7), electrically conductive electrode plate (3), electrically insulating plate (5), constant temperature heating element PTC element (4), electric lead wire (6) And a rubber packing (10), a bolt (9), and an insulating packing (8), the outermost heat dissipation portion is welded and housed by a heat resistant heat sink (1), and inside the spacer (2), The insulating film 7, the electrode plate 3, the constant temperature heating element PTC element 4, and the insulating plate 5 perforated for element insertion fixing are assembled in this order, and the rubber packing for sealing the electrical lead wire part 6 is carried out. (10), the heating element ceramic submersible heater characterized in that the electrical lead wire is out through the bolt (9), the insulating packing (8).
    [2" claim-type="Currently amended] The shape of the housing case and heater is a pipe type, a multi-type combination of round or square, a pipe type having a bulge of aluminum heat sink, a multi-pipe combination of several pipe types, an elliptic pipe type, a conical shape, and a square shape. A constant temperature heating element ceramic underwater heater characterized in that one or two or more of them are connected, such as a pipe type and a trapezoidal square pipe type.
    [3" claim-type="Currently amended] The method of claim 1,
    The shape of the PTC device is characterized in that the disk, cylindrical, elliptic cylindrical, cylindrical pipe, semi-ring, square, square rod, trapezoidal rod shape, the corner edge portion is characterized in that using a device tapered to round from the right angle Constant temperature heating element ceramic underwater heater.
    [4" claim-type="Currently amended] The method of claim 1,
    Constant temperature heating element ceramic underwater heater characterized in that it has a plurality of radial projections to increase the surface area of the heat generating portion.
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    同族专利:
    公开号 | 公开日
    KR100244807B1|2000-02-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    1997-08-01|Application filed by 이종구, 한국생산기술연구원, 박태원, 주식회사 엔테크
    1997-08-01|Priority to KR1019970036914A
    1999-03-05|Publication of KR19990015033A
    2000-02-15|Application granted
    2000-02-15|Publication of KR100244807B1
    优先权:
    申请号 | 申请日 | 专利标题
    KR1019970036914A|KR100244807B1|1997-08-01|1997-08-01|Ceramic water-proof heater|
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