KR100762010B1 - Induction heating type thermal mat - Google Patents

Abstract

An induction heating type thermal mat is provided to improve a heating effect with low cost by directly heating an operation fluid with a heating screw heated through an induction heating method. An induction heating type thermal mat includes a body(30), a transmission path(5), a heating transmission unit(10), and an induction heating unit(30). The transmission path(5) guides an operation fluid(7) with viscosity inside of the body(3). The heating transmission unit(10) supplies the operation fluid(7) to the transmission path(5), and has a spiral heating screw made of conductive material to heat the operation fluid(7). The induction heating unit(30) is formed by winding a coil around the outer side of the heating transmission unit(10) to heat the heating screw with induction current.

Description

Induction heating type thermal mat

1 is a view showing the main configuration of the thermal mat of the induction heating method according to an embodiment of the present invention.

FIG. 2 is a perspective view illustrating in detail a heating transfer part and an induction heating part shown in FIG. 1.

3 is a side view of FIG. 2.

4 is a view showing in detail the check valve shown in FIG.

5 is a view illustrating a state in which an insulating member is mounted on the outside of the coil illustrated in FIG. 3.

6 is a view showing a mounting state of the induction heating unit according to another embodiment of the present invention.

7 is a block diagram showing a control state of the thermal mat of the induction heating method according to an embodiment of the present invention.

8 is a view showing the arrangement of the transfer pipe according to another embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

1: thermal mat 3: body

5: transfer pipe 7: working fluid

9: outer cover 10: heating transfer part

12: heat generating screw 14: housing

16: entrance pipe 17: exit pipe

18: connecting member 19: bushing

20: cap 22: motor member

24: check valve 26: support plate

27: guide bar 28: spring

29: fixing member 30, 50: induction heating part

32,52 coil 34 hollow member

40: insulation member 60: operation unit

62: amplification circuit 64: temperature sensor

66: control unit 68: power supply unit

70: first transfer pipe 72: first pipe

74: second duct

The present invention relates to a thermal mat, and more particularly, in heating a mat by heating a fluid having a viscosity greater than or equal to a set value, the coil is wound on an outer side of a heating screw made of a conductor material to generate the heating screw by an induction current. It relates to a thermal mat of the induction heating method to maximize the space utilization.

In general, the heating mat is provided with a heating wire inside, so that the heating is easily performed by supplying power to the heating wire.

However, an electric field is generated by the heating of the heating wire, and the electric field emits harmful electromagnetic waves (EMI), which are not good for objects or living things.

That is, since the human body and the heating wire are closest to each other by the weight of the user, it is well known that a large amount of harmful electromagnetic waves are directly induced to the human body and thus have a very detrimental effect.

In order to solve the problem, a thermal mat for heating and circulating a fluid containing oil or water has been proposed.

However, the thermal mat has a separate circulation pump for moving the fluid and a heat exchanger for heating the fluid, thereby increasing the parts material cost and the production process cost and reducing the space utilization.

In addition, the heating method by the heat exchanger uses an indirect heating method of indirectly contacting and heating the fluid, rather than a direct heating method of directly contacting and heating the fluid, thereby reducing operating efficiency. Therefore, there is a need for improvement.

The present invention has been created by the necessity as described above, by preventing the generation of electromagnetic waves in the operation of the thermal mat by the circulation pump and the heat exchanger is installed separately to prevent the increase in parts material costs and production process costs and deterioration of space utilization The purpose is to provide a thermal mat of the induction heating method.

In addition, an object of the present invention is to provide an induction heating type thermal mat which can prevent the operating efficiency from being lowered by indirect heating without directly heating a fluid that transfers heat and circulates the thermal mat.

An induction heating type thermal mat according to the present invention includes: a heating mat including a body portion, which is a heating target space, and a transfer pipe guiding a flow of a working fluid having a viscosity inside the body portion, wherein the operation is performed by the transfer pipe line. A heating transfer part having a spiral heating screw made of a conductor material for supplying a fluid and simultaneously heating the working fluid and an induction heating part having a coil wound around the heating transfer part so that the heating screw is generated by induction current. It is configured to include.

Preferably, the heating transfer part is a shape surrounding the heating screw, the housing having an inlet pipe and an outlet pipe which are passages of the working fluid, and is mounted on one side of the housing to provide power for rotating the heating screw It is configured to include a motor member.

The housing is formed of an insulator, and the heating screw is formed of iron as a main component.

In addition, a check valve is provided in the inlet pipe to prevent the working fluid from flowing back outward.

The coil is wound around the hollow member made of an insulator material which is mounted in contact with the outside of the heat transfer part.

And, the working fluid is to use a silicone oil or a polymer gel.

In addition, an insulation member made of an insulator is installed outside the coil.

In addition, the transfer pipe is installed in a spiral shape using a vinyl chloride (PVC) as a material.

According to the present invention as described above, the heat transfer portion for circulating the working fluid having a viscosity higher than the set value and the induction heating portion for heating the heat generating screw of the heat transfer portion is integrally installed, thereby maximizing the space utilization The heating efficiency is increased by directly heating the working fluid, thereby reducing the electric charge.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the thermal mat of the induction heating method according to the present invention. In this process, the thickness of the lines or the size of the components shown in the drawings may be exaggerated for clarity and convenience of description. In addition, terms to be described below are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of a user or an operator. Therefore, definitions of these terms should be made based on the contents throughout the specification.

1 is a view showing the main configuration of the heating mat of the induction heating method according to an embodiment of the present invention, Figure 2 is a perspective view showing in detail the heat transfer unit and the induction heating unit shown in Figure 1, Figure 3 2 is a side view of FIG. 2, FIG. 4 is a detailed view of the check valve illustrated in FIG. 2, and FIG. 5 is a diagram illustrating a state in which an insulating member is mounted on the outside of the coil illustrated in FIG. 3. Is a block diagram showing a control state of the thermal mat of the induction heating method according to an embodiment of the present invention.

As shown in FIG. 1, the thermal mat of the induction heating method according to the preferred embodiment of the present invention includes a body 3 which is a heating target space, and has a working fluid having viscosity inside the body 3. A conveying pipe 5 for guiding the flow of 7) is installed.

The transfer pipe 5 is formed of a flexible material including vinyl chloride (PVC) to bend freely.

The arrangement of the transfer pipe 5 may be arranged in a zigzag shape as shown in FIG. 1, and may be modified in various shapes such as a spiral or a circle.

The working fluid 7 flowing along the transfer pipe 5 uses a functional material such as silicone oil, polymer gel, or CMC as a fluid having a viscosity higher than or equal to a set value.

The silicone oil is called dimethyl silicone oil, and is a colorless, transparent and odorless liquid, and the viscosity may be selected according to various uses ranging from low viscosity to high viscosity.

In addition, the silicone oil is suitable for use as the working fluid 7 according to the present invention because it is excellent in heat resistance, cold resistance and corrosion resistance, and has a low viscosity change with respect to temperature.

In addition, the polymer gel corresponds to a unit and refers to a compound formed by polymerization of molecules, and is used in a pack, a sanitary napkin and a diaper.

In addition, CMC (CMC) which is easily absorbed in water as a white or light white powder having high absorbency and may be used as the working fluid 7 may be used.

The CMC is a material that is harmless to a human body and is widely used in extenders, emulsion dispersants, adhesives, suspensions, and food additives.

In addition to the substances listed above, a fluid having a viscosity higher than a set value may be used as the working fluid 7.

As shown in FIGS. 1 to 3, a spiral formed of a conductive material is provided in the heat transfer part 10 for supplying the working fluid 7 to the transfer pipe 5 and simultaneously heating the working fluid 7. The heat generating screw 12 is provided.

The heating screw 12 is a screw is formed in a spiral shape in order to discharge the viscous fluid in one direction.

The material of the heat generating screw 12 is preferably formed of iron as a main component among the conductor materials so that the heat generating screw 12 generates heat by an induced current.

The heat transfer part 10 is provided with an inlet pipe 16 and an outlet pipe 17 serving as a passage of the working fluid 7 in a shape surrounding the heating screw 12 in the housing 14.

The housing 14 is formed of an insulator and is preferably formed of a plastic material having low heat and durability and low material cost.

The working fluid 7 flows into the housing 14 through the inlet pipe 16, and the working fluid 7 goes out of the housing 14 through the outlet pipe 17.

As shown in FIGS. 2 and 3, the connecting member 18 and the bushing 19 are sequentially inserted into the rotary shaft of the heating screw 12, and penetrate the cap 20 mounted on one side of the housing 14. The power shaft of the motor member 22 is inserted into the rear of the connecting member 18.

Thus, the motor member 22 is mounted on one side of the housing 14 to provide power for rotating the heat generating screw 12.

The inlet pipe 16 is a passage through which the working fluid 7 passing through the transfer pipe 5 enters the heating transfer part 10, and checks to prevent the working fluid 7 from flowing back outward. The valve 24 is installed in the inlet pipe 16.

As shown in FIG. 4, the check valve 24 is provided with a support plate 26 for shielding the inlet communicating with the outside, and a guide bar 27 installed perpendicular to the support plate 26.

A spring 28 is mounted on the outside of the guide bar 27, and the spring 28 is installed between the fixing member 29 and the support plate 26 having a plurality of through holes.

Accordingly, the flow of the working fluid 7 supplied after pressing the support plate 26 downward is allowed, but the flow of the working fluid 7 flowing from the lower side of the check valve 24 to the upper side is the spring 28. It is blocked by the support plate 26 pressed upwards by the).

As shown in FIG. 2 and FIG. 3, an induction heating unit 30 in which a coil 32 is wound is installed outside the heating transfer unit 10.

The coil 32 is wound outside the hollow member 34 of an insulator material which is mounted in contact with the outer side of the housing 14 of the heat transfer part 10.

The hollow member 34 is formed of an insulator, and is preferably formed of a plastic material having low heat and durability and low material cost.

Since the hollow member 34 and the coil 32 are produced as an integrated module, the productivity is improved and the assembling work becomes simpler.

And, as shown in Figure 5, the outer side of the coil 32 is provided with an insulating member 40 made of an insulator to prevent the risk of short circuit or electric shock due to the coil 32 flowing electricity.

As shown in FIG. 1, the assembly in which the induction heating unit 30 is coupled to the outside of the heat transfer unit 10 is installed inside the outer cover 9 made of an insulating material.

As shown in Figure 1 and 7, the induction heating method of the heating mat (1) having the structure is provided with a temperature sensor 64 in contact with the inside of the housing 14 or the outlet pipe (17).

The value measured by the temperature sensor 64 is transmitted to the control unit 66 inside the operation unit 60 electrically connected to the heating transfer unit 10 and the induction heating unit 30.

The control unit 66 is supplied with power through the power supply unit 68, and based on the set program and the value input through the operation unit 60 of the current flowing through the motor member 22 and the coil 32 The operation signal is transmitted to the amplifier circuit 62 for adjusting the intensity.

The outer cover 9 and the operation unit 60 in which the heating transfer unit 10 and the induction heating unit 30 are accommodated may be integrally formed, and spaced apart by separate members as shown in FIG. 1. Can also be.

6 is a view showing a mounting state of the induction heating unit according to another embodiment of the present invention, and for convenience of description, reference to the same reference numerals for the components having the same configuration and operation as in the preferred embodiment of the present invention The detailed description thereof will be omitted.

As shown in FIG. 6, the induction heating unit 50 according to another embodiment of the present invention has a coil 52 wound directly on the housing 14 of the heating transfer unit 10.

As a result, the alternating magnetic flux generated by the coil 52 is more strongly transmitted to the heat generating screw 12, thereby improving thermal efficiency and eliminating the need for a separate hollow member 34.

8 is a view showing an arrangement state of the transfer pipe according to another embodiment of the present invention, for convenience of description and the same reference numerals for the components of the same configuration and operation as in the preferred embodiment of the present invention Citations and detailed descriptions thereof are omitted.

As shown in FIG. 8, the first transport pipe path 70 according to another embodiment of the present invention has a first pipe path 72 connected to an inlet pipe 16 of the housing 14, and an outlet of the housing 14. It is divided into a second conduit 74 connected to the conduit 17.

The first conduit 72 and the second conduit 74 are installed in the body 3 by being wound in a spiral shape from the outside of the body 3 to the inside in a state spaced apart at set intervals.

In addition, the first conduit 72 and the second conduit 74 are easily produced and used due to the wound state without overlapping each other.

On the other hand, because the first transfer pipe 70 is wound in a spiral shape, the working fluid 7 heated in the heating transfer part 10 only heats one side of the body part 3 of the heating mat 1. Rather, it flows in a helical shape and heats the thermal mat 1 uniformly as a whole.

An operating state of the induction heating type thermal mat according to an embodiment of the present invention having the configuration as described above will be described.

1, 2, and 7, when a user manipulates the operation unit 60, a signal is input to the control unit 66.

The control unit 66 allows power to be applied to the motor member 22 and the amplifying circuit 62 so as to rotate the heating screw 12 and to apply an alternating current to the coil 32.

When an alternating current is applied to the coil 32, an alternating magnetic flux is generated around the coil 32 by an alternating current, and an induction current is generated in the heating screw 12, which is a conductor placed on the alternating magnetic flux.

The induced current generated in the heat generating screw 12 is also called an eddy current, and refers to an electrical force that prevents a change in the magnetic lines of force generated in the conductor.

Joule heat is generated by the specific resistance of the heat generating screw 12 and the eddy current, which is called eddy current loss, and becomes a heat source during induction heating.

That is, the high frequency induction heating used for metal heating is caused by the electromagnetic induction action and is caused by the resistance of eddy current loss and hysteresis loss generated in a conductor such as a metal located in the coil 32 through which an alternating current flows. Induction heating is called heating a material to be heated made of metal or conductor using thermal energy, and using high frequency current is called induction heating.

Such induction heating is a known technique used in induction cookers and the like, and a detailed description thereof will be omitted.

The heating screw 12 is heated by an alternating current flowing through the coil 32 to directly heat the working fluid 7 inside the housing 14, and is rotated at the same time so that the working fluid 7 is transferred. To the pipeline (5).

The temperature of the working fluid 7 is measured by the temperature sensor 64 installed on one side of the housing 14 or one side of the conveying pipe 5 and transferred to the control unit 66.

The controller 66 controls the amplification circuit 62 to adjust the amount of alternating current flowing through the coil 32 in comparison with the temperature set by the operation unit 60, thereby causing the heat generating screw 12 The exothermic temperature of is controlled.

On the other hand, the transfer pipe (5) is made of vinyl chloride (PVC) material is easy to fold or move the body portion 3, the first transfer pipe (70) is heated by being installed in a spiral shape The mat 1 is heated as a whole.

Although the present invention has been described with reference to the embodiments shown in the drawings, this is merely exemplary, and those skilled in the art to which the art belongs can make various modifications and other equivalent embodiments therefrom. Will understand.

Therefore, the true technical protection scope of the present invention will be defined by the claims below.

As described above, the thermal mat of the induction heating method according to the present invention can block electromagnetic waves by heating by using a working fluid having a viscosity higher than or equal to a predetermined value, unlike the conventional invention.

In addition, the present invention is because the heating of the working fluid and the pumping to the transfer pipe is made by a combination of the heating transfer portion and the induction heating portion to reduce the parts production cost compared to the production of a separate member and production process is also reduced It will reduce costs and maximize space utilization.

In addition, the present invention provides an excellent heating effect with a small electric charge by directly heating the working fluid by a heating screw heated by an induction heating method.

Claims (8)

In the thermal mat including a body portion which is a heating target space and a conveying pipe for guiding the flow of the working fluid having a viscosity into the body portion, A heating transfer part provided with a spiral heating screw made of a conductive material to supply the working fluid to the transfer pipe and simultaneously heat the working fluid; And Induction heating method of the heating mat, characterized in that the heating screw is configured to include an induction heating unit coiled around the outside of the heating transfer unit to generate heat by induction current. The method of claim 1, The heating transfer part has a shape surrounding the heating screw, the housing having an inlet pipe path and an outlet pipe path serving as a passage of the working fluid; Induction heating type thermal mat, characterized in that it comprises a motor member mounted to one side of the housing to provide power for rotating the heat generating screw. The method of claim 2, The housing is formed of an insulator, the heating screw is induction heating type thermal mat, characterized in that the main component is formed of iron. The method of claim 2, Induction heating method of the heating mat, characterized in that the inlet pipe is provided with a check valve. The method of claim 1, The coil is a heating mat of the induction heating method, characterized in that the winding is wound outside the hollow member of the insulator material mounted in contact with the outside of the heat transfer. The method of claim 1, The working fluid is a thermal mat of the induction heating method, characterized in that to use a silicone oil or a polymer gel. The method according to claim 1 or 5, Induction heating method of the heating mat, characterized in that the insulating member is formed on the outside of the coil. The method of claim 1, The transfer pipe is a thermal mat of the induction heating method, characterized in that the vinyl chloride (PVC) is installed in a spiral shape.

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