KR100839970B1 - Freezing prevent heater for pipe line - Google Patents

Abstract

A heater possible to be installed to or removed from a desired location of a pipeline carrying compressed air or fluid is provided to prevent the pipeline from freezing. A heater for preventing pipes from freezing includes a connector(11) at the side of heater housing case(16) which is provided to insert and assemble the heater to a pipeline(1), a temperature sensor(12) which senses ambient temperature and converts measured temperature value to electrical signals, a controller(13) which is turned on or turned off by the electric signal emitted from the sensor, and a heat generation unit which generates heat when electric current is applied by the operation of the controller.

Description

Piping line freeze prevention heater {FREEZING PREVENT HEATER FOR PIPE LINE}

1 is an external perspective view of the heater apparatus of the present invention.

2 is an internal sectional view of the heater apparatus of the present invention.

Figure 3 is a detailed cross-sectional view of the temperature sensor of the present invention.

Figure 4 is a schematic view of a compressed air air line installation state of the heater of the present invention.

<Explanation of symbols for main parts of the drawings>

1: piping line 2: compressor

3: air filter 3a: filter body

3b: drain portion 4: on / off valve

10: heater 11: pipe coupling portion

12: temperature sensor 12a: leaf spring

12b: bimetal 13: control unit

14: heat generating portion 15: heat conductive layer

16: heater housing 20: connector

The present invention relates to a heater for preventing the freezing of the pipeline, and more particularly, to a heater structure for preventing the freezing of the winter of the pipeline for supplying compressed air or fluid.

In general, in the industrial field, compressed air is used for various purposes, and the compressed air is supplied with compressed air through a pipe line from an air compressor.

On the other hand, in order to prevent the freezing of the compressed air pipes in winter, etc., the method of mainly installing a heat insulating material outside the fluid transfer pipe was mainly used.

However, the existing thermal insulation insulation composition for preventing freezing as described above, because the installation and installation cost was incurred additionally because it must be installed along the entire path of the pipe, because it is not a structure to supply a separate heat source in the pipe There was a problem that localized freezing will occur.

Therefore, the freezing occurs in the inconvenience of having to carry out a separate heating wire wound around the piping site to melt the corresponding site.

The present invention has been proposed to improve the above problems in the prior art, and an object of the present invention is to provide a more efficient freezing prevention effect by providing a heater structure that is easily installed and dismantled in a required portion of a pipe line.

The object is to configure the freezing prevention heater in the pipe line to which the compressed air or fluid is supplied, the pipe coupling portion provided on one side of the heater housing so as to be coupled to the pipe line, and senses the outside temperature to electrically A pipe comprising a temperature sensor for converting a signal, a control unit for controlling power on / off according to the signal of the temperature sensor, and a heat generating unit for generating heat by applying power under control of the control unit This can be achieved through a heater for preventing line freezing.

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

First, looking at the overall structure of the anti-freezing heater 10 structure according to the present embodiment through the external perspective view of Fig. 1 and the internal sectional view of Fig. 2, a thread is formed on the outer circumferential surface on the heater housing 16, the piping line The pipe coupling part 11 is formed to be screwed to (1), and the inside of the heater housing 16 senses the outside temperature or the temperature in the pipe line 1 as shown in FIG. When the temperature sensor 12 converts it into an electrical signal, the control unit 13 for controlling the power on / off according to the signal of the temperature sensor 12, and the power is controlled by the control unit 13 The heat generating portion 14 which generates heat by being applied is comprised.

In particular, the temperature sensor 12 is bi-metal (12a, 12b) consisting of two metal plates having different coefficients of thermal expansion, as shown in Figure 3 is an enlarged view of the A portion is attached, bimetal according to the temperature change By using the modification of (12b) it is configured so that an electrical signal due to a short circuit with a contact (not shown) can be applied to the control unit (13).

In addition, the heater housing 16 has a heat conductive layer 15 filled with an insulating and conductive material for transferring heat generated from the heat generating portion 14 to the pipe coupling portion, so as to surround the heat generating portion 14. The material constituting the thermally conductive layer 15 may be filled with crushed sand or stone, and more preferably, is formed into a plurality of granules by kneading the yellow soil having high thermal conductivity while being insulated. By providing it is possible to exhibit improved heating efficiency.

In particular, when the loess is provided in the form of granules forming a certain direct line, the air conduction layer 15 forms a predetermined void forming an air layer between the loess grains, thereby protecting the heat generating unit 14 from external impact. Together, the thermal conductivity can be further improved.

In the drawings, reference numeral 20 denotes a connection connector connected to a specific portion of the pipe line 1 so that the heater 10 of the present invention can be easily coupled.

The effects of the use of the present invention for preventing the freezing of the heater 10 constituting such a configuration will be described.

4 is a schematic view showing a pipe line installation state for supplying compressed air in a general industrial type, where a piston or screw compressor (2) for generating compressed air as shown is compressed air through a pipe line (1). It was connected to supply the, and on the piping line (1) forming a parallel connection structure is provided with an on-off valve (4) for selectively opening and closing each line, the oil contained in the compressed air supplied with it. It can be seen that the air filter 3 for removing water is connected.

The air filter 3 is typically composed of a combination of a filter main body 3a in which air and water are separated, and a drain part 3b in which separated water is discharged.

The anti-freezing heater 10 of the present invention on the pipe line (1) making such a pipe state is selectively mounted on the necessary portion to perform the freezing prevention function.

That is, as shown in FIG. 4, the heater 10 of the present invention is coupled to the required portion of the piping line 1 by using the connection connector 20. The filter body 3a and the drain portion 3b of the air filter 3 are connected to each other. 2) may be connected, and as shown in Figure 2 by connecting the connecting connector 20 to the connection portion between the pipe line (1) by screwing using the pipe coupling portion 11 of the heater 10 Fastening can be made easily.

In this way, the heater 10 of the present invention is connected to the pipe line 1. In the mounted state, when the outside temperature or the temperature of the compressed air is lowered to a predetermined temperature, preferably 0 ° C. or lower, the bimetals 12a and 12b constituting the temperature sensor 12 are deformed and contact (not shown) ) Is short-circuited to send an electrical signal to the control unit (13).

In addition, when the control unit 13 recognizes the transmitted signal and applies power to the heat generating unit 14, heat is generated from the heat generating unit 14 due to the self-heating resistance. 1) It is possible to prevent the occurrence of freezing in the pipe due to the heat transfer into the inside.

On the other hand, when the temperature of the compressed air or the outside air temperature rises above a certain temperature, the bimetals 12a and 12b of the temperature sensor 12 are restored to a circular state, and the short circuit with the contact is released. In 13), the heat generation of the heat generating unit 14 is stopped by cutting off the applied power.

Therefore, the freeze protection heater 10 of the present invention is connected to a plurality of places in the pipe line 1 during the winter when the freezing of the pipe is expected to prevent the occurrence of freezing by preventing the occurrence of abnormality of the compressed air supply system. When the winter season passes, the freezing prevention heater 10 of the present invention can be removed from the pipe line 1 and stored.

In addition, although specific embodiments of the present invention have been described and illustrated above, it is obvious that the freeze protection heater structure of the present invention may be variously modified and implemented by those skilled in the art.

For example, in the above embodiment, the temperature sensor is described and illustrated as being operated by bimetal, but other types of temperature sensor may be applied, and the mounting position of the sensor may also be modified.

Therefore, such modified embodiments should not be understood individually from the technical spirit or the prospect of the present invention, and such modified embodiments should fall within the appended claims of the present invention.

As described above, the freeze protection heater structure of the present invention has an effect of allowing stable supply of compressed air by preventing in advance a problem caused by freezing of pipes that may occur in winter in a pipe through which compressed air flows.

In particular, due to the coupling structure that can be easily connected to and disconnected from the pipe in the pipe has a convenience that can be used by selectively combining only cold weather.

In addition, it is possible to maximize the utilization efficiency in the industrial site by being able to configure a separate connection connector to the required portion of the entire piping line.

In addition, it is possible to increase the durability of the product by forming a thermal conductive layer of loess granules in order to protect the heating portion from the external impact inside the heater.

Claims (6)

In configuring the freezing prevention heater 10 in the pipe line (1) to which the compressed air or fluid is supplied, the freezing prevention heater (10); A pipe coupling part 11 provided at one side of the heater housing 16 to be coupled to the pipe line 1 and coupled thereto; A temperature sensor 12 which detects outside temperature and converts it into an electrical signal; A control unit 13 for controlling the power on / off according to the signal of the temperature sensor 12; A heat generating unit 14 generating heat by being supplied with power under the control of the control unit 13, The heater housing 16 is provided to surround the heat generating portion 14 is composed of a heat conductive layer 15 filled with an insulating and conductive material for transferring the heat generated from the heat generating portion 14 to the pipe coupling side. Piping line freeze prevention heater characterized in that. The method according to claim 1, The pipe coupling portion 11 has a screw thread formed on the outer circumference thereof, and a connection connector having a screw thread formed on the inner circumference thereof so as to be screwed with the pipe coupling portion 11 on the pipe line 1 corresponding thereto ( 20) is a pipe line freeze protection heater characterized in that the connection is provided separately. The method according to claim 1, The temperature sensor 12 is a pipe line freeze protection heater, characterized in that consisting of bimetal (12a, 12b) formed by pasting a plurality of metal plates having different thermal expansion coefficients. delete The method according to claim 1, The heat conduction layer 15 is a pipe line freeze protection heater characterized in that it is formed so as to form a plurality of pores inside the filling by forming a plurality of granules of ocher. The method according to claim 1 or 2, On the pipe line 1, an air filter 3 for separating oil and water contained in the compressed air guided along the pipe is provided, and the filter main body 3a and the drain constituting the air filter 3 are connected. Piping line freeze protection heater, characterized in that the connection connector 20 is formed between the portion (3b) is connected to the pipe coupling portion 11 is formed.

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