KR101158011B1 - An electric heating apparatus - Google Patents

Abstract

PURPOSE: An electrical type heater is provided to efficiently sense a leakage current by inserting ground member between an outer tube pipe and a heater pipe with a suppress inserting method. CONSTITUTION: A heater and a sensor connection pipe(32) are formed at the lower side of a case(30). A printed circuit board(40) is embedded in the case. A heating wire electrically connected with the printed circuit board is embedded in a heater pipe(10). The inner side of the heater pipe is filled with a thermal conductance filler(13) in order to protect the heating wire. Both upper sides of an outer tube pipe(14) are inserted and combined to a heater connection pipe of the case. A ground member is adhered between the heater pipe and the outer pipe.

Description

Electric heating device {AN ELECTRIC HEATING APPARATUS}

The present invention relates to an electric heating device, and more specifically, to the function of grounding the heater in the process of heating the liquid made of various functions such as low water level detection, overheating detection, temperature detection and automatic or manual switching switch stably The present invention relates to an electric heating apparatus capable of increasing the reliability of a product by mounting the grounding member so that a good grounding is achieved without a separate fixing member.

In general, the electric heating device is used to heat water or liquid chemicals or aqueous solution contained in a container to a predetermined temperature, and has a high thermal efficiency, does not cause pollution, and has a simple structure and is widely used for industrial and home use.

delete

In such a conventional heating apparatus, a heater heated by electric energy is inserted into a heater pipe, and the heater pipe is coupled to a case, and within the case, a controller for controlling the temperature of the heater and various functions are selected and performed. Various functional sensors and temperature sensors are installed.

delete

However, since the conventional heating apparatus does not have a means for preventing a short circuit of the electrode supplying electrical energy to the heater, there is a risk of an electrical safety accident such as an electric shock when the short circuit occurs, which makes management difficult and a significant inconvenience in handling.

Japanese Utility Model Publication No. 45-8071 Korean Utility Model Registration No. 119560 Korean Utility Model Registration No. 237611

Accordingly, the present invention has been made to solve the above problems, an object of the present invention is to install a PCB substrate for performing various sensing and control functions on the top of the heater pipe is used in the process of heating the liquid contained in the container, etc. It is to provide an electric heating device to ensure the convenience.

Another object of the present invention is to insert a grounding member between the heater pipe and the outer pipe to protect the heater in close contact with the electrical system to improve the reliability of the product by implementing a stable and good grounding function without being separated by vibration and shock It is to provide a heating device.

Embodiments of the present invention to achieve the object as described above, the case and the heater and sensor connecting tube is formed on the lower surface, is built in the case, the water level control function, temperature control function, timer function and automatic switch function is performed A PCB substrate having an electronic circuit network, a heater pipe having a heating wire electrically connected to the PCB board, a thermally conductive filler charged to surround the heating wire, and the heater pipe The outer pipe is inserted into the upper and both ends of the heater connection pipe of the case, the upper end is inserted and coupled to the sensor connector, the detection pipe with a temperature and water level sensor is electrically connected to the PCB substrate, and the heater It is inserted closely between the pipe and the outer pipe, the top includes a grounding member for maintaining a circuit contact with the PCB board It provides - electric heating device.

The electric heating apparatus according to the present invention having the above-described solution and configuration has a PCB board installed inside the case, through which the heaters are grounded and prevented from overheating, water level detection and temperature sensing, and automatic or manual switches. It can be used more safely and conveniently.

In addition, since the grounding member is inserted and pressed closely between the outer pipe and the heater pipe without using a fixing member separately, it maintains a stable assembly and grounding state so that the current leaking from the heater can be detected more accurately and efficiently. In addition, it is possible to improve workability by minimizing labor cost while reducing cost by reducing the number of parts.

In addition, by completing the entire product in a simple structure, the assembly time can be shortened to improve productivity, and the improved detection function through the detection sensor enables more convenient and stable use.

1 is a perspective view showing the overall configuration of a heating apparatus according to the present invention,
Figure 2 is a longitudinal sectional view of the main portion of the heating apparatus according to the present invention,
3 is a cross-sectional view taken along the line AA of FIG.
4 is a cross-sectional view of the main portion of the detection pipe according to the present invention;
5 is a longitudinal sectional view of main parts of a heating apparatus according to another embodiment of the present invention.

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

As shown in Figure 1 and 2, the electric heating apparatus according to an embodiment of the present invention is the external pipe 14, the heater pipe 10, which generates heat when the power is supplied, and the heater pipe 10 The heating pipe 12 accommodated therein, a sensing sensor 22 for sensing temperature and water level, a sensing pipe 20 accommodating the sensing sensor 22, and an exterior pipe having a heater pipe 10 embedded therein ( 14) and the connection pipe 32 that combines the upper end of the sensing pipe 20, the case 32 is formed integrally and receives the wiring cable and the PCB board accommodated in the case 30 40, a ground member 50 for preventing a short circuit, and a plug 60 for supplying power.

The outer pipe 14 having the heater pipe 10 embedded therein is disposed at the bottom or side of the container containing the liquid such as water. Heater pipe 10 is made of a metal tubular body having a hollow therein, a coil-shaped heating wire 12 is embedded therein. In addition, the inside of the heater pipe 10 is filled with a filler 13 such as magnesium oxide (MgO) having excellent thermal conductivity and insulation to surround the heating wire 12 to increase thermal efficiency due to conversion of electrical energy into thermal energy, and external physical It is robust to phosphorus impact and can be processed appropriately in various shapes.

The heating wire 12 is installed in the heater pipe 10 and is formed of a heat generating structure for generating heat by receiving electricity.

The heating wire 12 may employ any one of heating elements such as nichrome wire, carbon heating element, ceramic heating element, tungsten wire and the like.

The heater pipe 10 and the outer pipe 14 are formed in a rod shape or a pipe shape having a hollow inside.

The heater pipe 10 is light in weight and is preferably formed of a metal material such as titanium, tantalum, zirconium, or stainless steel, which is excellent in corrosion resistance, thermal conductivity, corrosion resistance, chemical resistance, and the like.

The outer pipe 14 preferably has an intermediate portion bent in a U shape, but may also be formed in an I shape. In addition, although the appearance pipe 14 and the heater pipe 10 are not shown in the figure, it is possible to apply various appearance structures within the range satisfying the object of the present invention.

That is, a heating pipe 12 such as nichrome wire and a filler 13 such as magnesium oxide (MgO) are embedded in the hollow of the metal heater pipe 10 having a predetermined diameter, and then housed inside the outer pipe 14 to provide a double pipe. It is formed to have a shape, and is formed by bending the lower ends of the heater pipe 10 and the appearance pipe 14 submerged in water in a U-shape or Charlie shape.

The PCB board 40 is installed on the upper end of the connection pipe 32 in the case 30 by an electrode and a screw connection.

The PCB 40 has a function of grounding the heater, and the electronic components and the network to enable the low water level detection, overheating detection, temperature detection and automatic or manual switch function.

Here, the network is a general electronic circuit pattern, and a detailed description thereof will be omitted.

The lower portion of the PCB substrate 40 may maintain the contact with the ground member 50 which is inserted into and close to the connection pipe 32 to induce grounding due to a short circuit.

As shown in FIGS. 2 and 3, the grounding member 50 is formed in the shape of a tracer so that the horizontal portion of the upper portion is in surface contact with the lower surface of the PCB substrate 40, and the vertical portion of the lower portion is connected to the outer pipe 14. Insertion and close contact between the heater pipe (10). And the upper portion of the ground member 50, the outer pipe 14 and the heater pipe 10 is inserted into the connection pipe 32 protruding to the lower portion of the case (30).

That is, the upper surface of the ground member 50 is formed to be in contact with the PCB substrate 40 to maintain the ground state.

Here, the grounding member 50 may have a cross section of a straight line, an arc, a semicircle, or a circle, and may be formed in various shapes and configurations although not shown in the drawing.

Meanwhile, as shown in FIG. 5, the ground member 50 passes through the outer surface pipe 14 on the outer surface of the connecting pipe 32 while the upper portion thereof is in contact with the PCB 40 to form a ground state. It may be fixed in a state perpendicular to the lower surface of the case 30 by the fastener 52 in contact with the (10).

As shown in FIG. 4, the sensing pipe 20 is inserted into and fixed to a connection pipe 32 integrally formed at a lower portion of the case 30, and connected to the PCB substrate 40 by wires. There is a built-in detection sensor 22.

In addition, the sensor 22 built in the detection pipe 20 may detect temperature and level.

Here, the sensor 22 is preferably made of a microwave motion sensor or a multi-line laser level sensor.

Referring to the operation of the present invention configured as described above in detail.

As shown in FIGS. 1 and 2, the PCB board 40 is accommodated in the case 30 to maintain a safe protection state, and the upper part of the electrode to which the heating wire 12 is connected and the PCB board 40 are screwed together. It is fixed in such a way to maintain a strong assembly state against shaking and external shocks, and it performs the heater grounding function, low water level detection, overheating detection, temperature detection and automatic or manual switching switch function by user's selection or automatic adjustment. It will heat the liquid contained in it.

Here, the automatic or manual switch can be switched by switching based on the circuitry of the PCB board 40 according to the user's selection.

In addition, by sensing the temperature by the detection pipe 20 that accommodates the sensor 22 to allow the liquid to be heated to an appropriate temperature, and also to detect the water level can be supplied by replenishing the liquid.

In addition, by controlling and setting the temperature required for heating with the temperature controller 70, unnecessary heating can be suppressed to save energy.

In addition, a grounding member 50 inserted into the connection pipe 32 formed integrally with the case 30 in a state of being closely adhered between the exterior pipe 14 and the heater pipe 10 may be generated in the heater pipe 10. The leakage current can be safely guided to the ground through the PCB board 40 to prevent a safety accident such as an electric shock due to a short circuit.

In addition, since the grounding member 50 stably maintains a fixed and grounded state between the exterior pipe 14 and the heater pipe 10 by an interference fit method without using a separate fixing member, the ground member 50 flows even when the external impact is prevented. There is no fear of falling or falling off.

The present invention has been described with reference to specific embodiments of the present invention, but it is apparent that various modifications and changes can be made as described above without departing from the spirit of the invention. Accordingly, the detailed description of the invention and the accompanying drawings should not be construed as limiting the technical spirit of the present invention but as merely illustrative.

10; Heater pipe 12; Electric wire
14; Appearance pipe 20; Sense Pipe
22; Sensor 30; case
32; Connector 40; PCB board
50; A grounding member 60; plug
70; Thermostat

Claims (3)

A case 30 having a heater and a sensor connector 32 formed on a lower surface thereof;
A PCB substrate 40 built in the case 30 and having an electronic circuit network configured to perform a water level control function, a temperature control function, a timer function, and an automatic switch function;
A heater pipe 10 having a heating wire 12 electrically connected to the PCB board 40;
A thermally conductive filler 13 filled in the heater pipe 10 to surround the heating wire 12;
An outer pipe 14 having both upper ends inserted into the heater pipe 10 of the case 30 by embedding the heater pipe 10;
A sensing pipe 20 having an upper end inserted into and coupled to the sensor connector 32 and having a temperature and water level sensor 22 electrically connected to the PCB substrate 40;
A grounding member 50 inserted into and tightly coupled between the heater pipe 10 and the exterior pipe 14 and having an upper end thereof to maintain a circuit contact with the PCB board 40;
Electric heating device comprising a. delete delete

Images