KR102413769B1 - Cooling-water heater - Google Patents

Abstract

The present invention relates to a cooling water heater, comprising: a body having an inlet pipe through which cooling water is introduced and an outlet pipe through which cooling water is discharged and disposed at an upper side thereof; a housing having a hollow interior and being coupled to the body to seal the hollow interior; an induction coil provided inside sealed by the body and the housing; a first heating element spaced apart from the inside of the induction coil, the first heating element being formed in a cylindrical shape and having open ends facing up and down; and a second heating element spaced apart from the induction coil and disposed in a cylindrical shape with both open ends facing up and down; The induction coil is formed of a waterproof coil with an outer circumferential surface of the element wire coated with insulation, and a lead-out hole through which an extension wire can pass is formed in the body, and the extension wire passes through the lead-out hole and is connected to the control unit. The present invention relates to a cooling water heater that is formed to seal between an extension and a draw-out hole, thereby making it easy to design and cool an induction coil and to easily seal a portion through which an extension wire of an induction coil connected to a control unit passes.

Description

Cooling-water heater {Cooling-water heater}

The present invention relates to a coolant heater, and in a coolant heater for heating coolant using a heating element generated by an induction coil, the design and cooling of the induction coil is easy, and the part through which the extension wire of the induction coil connected to the control unit passes is sealed It relates to an easy-to-follow cooling water heater.

A vehicle powered by an engine powered by gasoline or diesel as an energy source is currently the most common type of vehicle. As a bar that is gradually emerging, electric vehicles, hybrid vehicles, fuel cell vehicles, etc. are being put to practical use or under development.

However, in electric vehicles, hybrid vehicles, and fuel cell vehicles, a heating system using coolant cannot be applied or is difficult to apply, unlike conventional vehicles using an engine using petroleum as an energy source. That is, in the case of a vehicle using a conventional engine using petroleum as an energy source as a driving source, a lot of heat is generated in the engine, a coolant circulation system for cooling the engine is provided, and the heat absorbed by the coolant from the engine is heated to the room. to be used for However, since as much heat as generated from the engine is not generated from the driving source of the electric vehicle, the hybrid vehicle, and the fuel cell vehicle, there is a limit to using such a conventional heating method.

Accordingly, in electric vehicles, hybrid cars, and fuel cell vehicles, various studies have been made, such as adding a heat pump to the air conditioning system and using it as a heat source, or providing a separate heat source such as an electric heater. have. Among them, the electric heater is widely used because it can heat the cooling water more easily without significantly affecting the air conditioning system.

Here, the electric heater includes an air heating type heater that directly heats air blown into the interior of the vehicle, and a cooling water heating type heater (or cooling water heater) of a type that heats cooling water.

In a conventional induction type coolant heater that is used in a dual fuel cell vehicle to heat coolant, the high frequency generator 30 is electrically connected to the fuel cell stack 10 that generates power as shown in FIGS. 1 and 2 , and the high frequency generator (30) is formed in the form of a coil wound on the outside of the cooling water flow pipe (2) made of a magnetic metal material, and by using the power of the fuel cell stack (10) to flow an alternating current to the induction coil (31) by a changed magnetic field An eddy current is generated in the cooling water flow pipe 2, so that the cooling water flow pipe 2 can be heated by Joule heat, so that the cooling water passing through the inside of the cooling water flow pipe 2 can be heated.

However, in the conventional induction type cooling water heater, the cooling water passes only through the inside of the cooling water flow pipe and heat exchanges, and the cooling water flow pipe, which is a heating element capable of induction heating, is disposed only inside the induction coil, so the heating efficiency and heat exchange efficiency are low.

In addition, since cooling of the induction coil is difficult, the cooling water must be designed to flow in contact with the induction coil to cool the induction coil. There is a problem in that it becomes more difficult and the flow path structure of the coolant becomes complicated.

KR 2011-0075118 A1 (2011.07.06)

The present invention has been devised to solve the above problems, and an object of the present invention is to provide a coolant heater that heats coolant using a heating element generated by an induction coil. An object of the present invention is to provide a coolant heater that can easily seal a portion through which an extension wire of an induction coil to be connected passes.

The coolant heater 1000 of the present invention for achieving the above object includes a body 100 having an inlet pipe 110 through which coolant is introduced and an outlet pipe 120 through which coolant is discharged, which is disposed on the upper side; a housing 200 having a hollow inside and being coupled to the body 100 so that the hollow inside is sealed; an induction coil 300 provided inside sealed by the body 100 and the housing 200; a first heating element 400 spaced apart from the inside of the induction coil 300; and a second heating element 500 provided to be spaced apart from the outside of the induction coil 300 ; The induction coil 300 is formed of a waterproof coil with an insulating coating on the outer circumferential surface of the wire, and the body 100 has a lead-out hole 130 through which the extension wire 310 can pass. The extension line 310 passes through the lead-out hole 130 and is connected to the controller 700 , and is formed to be sealed between the extension line 310 and the lead-out hole 130 .

In addition, it is inserted into and coupled to the lead-out hole 130 of the body 100 and further includes a wire seal 320 coupled to the extension line 310 to pass through the through-hole 321 , and the lead-out hole ( 130) and a contact surface of the wire seal 320 are closely sealed, and the contact surface of the wire seal 320 and the extension wire 310 is closely closed and sealed.

In addition, a pair of locking protrusions 322 spaced apart from each other are formed to protrude from the outer circumferential surface of the wire seal 320, and the periphery of the draw-out hole 130 of the body 100 is hung between the locking protrusions 322. The wire seal 320 is characterized in that it is fixed to the body (100).

In addition, a contact protrusion 324 is formed to protrude from the outer circumferential surface of the wire seal 320 in contact with the lead-out hole 130 of the body 100 , and the wire seal is in contact with the extension line 310 of the induction coil 300 . A close contact protrusion 323 is formed on the inner circumferential surface of the 320 , the wire seal 320 is inserted into and coupled to the lead-out hole 130 of the body 100 , and the extension wire 310 penetrates the wire seal 320 . In a state coupled to pass through the ball 321, the contact protrusions 324 and 323 are pressed to seal the contact surfaces.

In addition, it is coupled to the body 100 so that the upper end of the wire seal 320 is caught to limit movement in the upward direction, and a fixing cover 330 formed so that the extension line of the induction coil 300 passes through. It is characterized in that it is done.

In addition, a fixing plate 350 that is coupled to the body 100 so that the lower end of the wire seal 320 is caught to limit movement in the downward direction, and is formed so that the extension line 310 of the induction coil 300 passes. It is characterized in that it further comprises.

In addition, a recess 150 is formed on the lower side of the draw-out hole 130 of the body 100 so that the wire seal 320 is inserted into the seating groove 150, and the extension line of the induction coil 300 ( 310) is passed and the lower end of the wire seal 320 is caught and further comprises a fixing plate 350 coupled to the body 100 so that movement in the downward direction is limited, and the seating groove 150 and the wire It is characterized in that the contact surface of the seal 320 is closely sealed, and the contact surface of the wire seal 320 and the extension wire 310 is closely adhered and sealed.

In addition, a concave filling groove 140 is formed on the upper side of the draw-out hole 130 of the body 100 , the wire seal 320 is coupled to the body 100 , and the extension line 310 is connected to the wire seal 320 . ) is combined, the filling groove 140 is filled with a filling material 340 to be sealed.

In addition, the body 100 is made to further include a wire seal 320 coupled to the portion in which the lead-out hole 130 is formed and coupled so that the extension line 310 passes through the through hole 321 , the body 100 ) and the contact surface of the wire seal 320 are closely sealed, and the contact surface of the wire seal 320 and the extension wire 310 is closely sealed and formed in a cylindrical shape so that the induction coil 300 is wound on the outside, a bobbin 600 coupled to the body 100 and the housing 200; It is characterized in that it further comprises.

In addition, the bobbin 600 is characterized in that the extension wire fixing part 602 is formed so that the extension wire 310 of the induction coil 300 is fixed to the extension wire fixing part 602 .

In addition, in the induction coil 300, the extension wire 310 is vertically disposed so that it can be coupled to the wire seal 320. It is characterized in that the extension line fixing part 602 is arranged in a vertical direction.

In addition, the induction coil 300 is characterized in that it is wound over a single winding layer in the radial direction.

In addition, the induction coil 300 is characterized in that the winding layer is formed in an even number.

The cooling water heater of the present invention has advantages in that it is easy to design and cool the induction coil by forming the induction coil as a waterproof coil, and it is easy to seal the part through which the extension wire of the induction coil connected to the control unit passes.

1 and 2 are schematic and cross-sectional views showing a conventional coolant heater.
3 and 4 are an assembled perspective view and an exploded perspective view showing the coolant heater of the present invention.
5 is a front cross-sectional view showing the coolant heater of the present invention.
6 and 7 are an exploded perspective view and an assembled perspective view illustrating a structure in which an extension of an induction coil is sealed and waterproof according to an embodiment of the present invention;
8 and 9 are an exploded perspective view and an assembled perspective view showing a structure in which the extension of the induction coil is sealed and waterproof according to another embodiment of the present invention.
11 and 12 are a perspective view and a plan view of the body according to the present invention viewed from the lower side.
13 is a perspective view showing a state in which the bobbin cover is coupled to the lower side of the body in FIG. 11;

Hereinafter, the cooling water heater of the present invention having the configuration as described above will be described in detail with reference to the accompanying drawings.

3 is an assembled perspective view and an exploded perspective view showing the cooling water heater of the present invention, and FIG. 5 is a front cross-sectional view showing the cooling water heater of the present invention.

As shown, the coolant heater 1000 of the present invention includes: a body 100 in which an inlet pipe 110 through which coolant is introduced and an outlet pipe 120 through which coolant is discharged are formed and disposed on the upper side; a housing 200 having a hollow inside and being coupled to the body 100 so that the hollow inside is sealed; an induction coil 300 provided inside sealed by the body 100 and the housing 200; a first heating element 400 spaced apart from the inside of the induction coil 300; and a second heating element 500 provided to be spaced apart from the outside of the induction coil 300 ; The induction coil 300 is formed of a waterproof coil with an insulating coating on the outer circumferential surface of the wire, and the body 100 has a lead-out hole 130 through which the extension wire 310 can pass. The extension line 310 may pass through the lead-out hole 130 to be connected to the controller 700 , and may be formed to be sealed between the extension line 310 and the lead-out hole 130 .

First, the body 100 is a part that forms the outer shape of the coolant heater according to the present invention, and a flow path through which coolant is introduced and discharged is formed. That is, the inlet pipe 110 may be formed in the body 100 so that the coolant flows in, and the outlet pipe 120 may be formed so that the coolant is discharged, and the body 100 is connected to the inlet pipe 110 and the body 100 ) is formed to pass through, and also the discharge flow path is formed to pass through the body 100 so that the discharge flow path can be connected to the outlet pipe 120 .

The housing 200 together with the body 100 forms the outer shape of the coolant heater according to the present invention, so that the body 100 and the housing 200 are combined to seal the hollow inside of the housing 200 . can be formed. In this case, the body 100 may be disposed on the upper side and the housing 200 may be vertically coupled with the housing 200 disposed on the lower side. In addition, the housing 200 may have a hollow interior and an open upper side so that the open upper periphery of the housing 200 coupled to the body 100 may be sealed, and accordingly, the inlet and outlet channels formed in the body 100 . may communicate with the hollow interior of the housing 200 . In addition, a sealing member may be interposed in the body 100 on the surface where the body 100 and the housing 200 are contacted and coupled to seal the contact surface.

The induction coil 300 may be provided inside the housing 200 sealed by the coupling of the body 100 and the housing 200 . Here, the induction coil 300 is wound a plurality of times in the circumferential direction to form a coil spring in close contact in the vertical direction, and may be formed in a spiral shape around the vertical direction. Thus, the induction coil 300 may have a cylindrical shape, and may be disposed so that both open sides face up and down. In addition, the induction coil 300 may be formed such that the extension lines 310 extending upward from the wound portion of the coil are drawn out through the body 100 , and the extension lines are a control unit formed on one side of the body 100 . may be electrically connected to 700 .

In addition, the induction coil 300 may have an upper end coupled to the body 100 so that the combined upper periphery may be sealed, and the lower end of the induction coil 300 may be supported to be spaced apart from the bottom surface of the housing 200 . At this time, the upper end of the induction coil 300 is disposed to partition between the inflow passage and the exhaust passage formed in the body 100 , so that the coolant introduced through the inflow passage does not pass to the upper end of the induction coil 300 , and the induction The cooling water may be configured to pass only through the lower end of the coil 300 . That is, when viewed from the top, the inflow channels connected to the inlet pipe 110 of the body 100 are formed inside the induction coil 300 in a radial direction, and the discharge channels connected to the outlet pipe 120 are radially induction Cooling water formed on the outside of the coil 300 and introduced into the inlet pipe 110 flows downward while passing through the inside of the induction coil 300, makes a U-turn at the lower end of the induction coil 300, and then the induction coil 300. It can be configured to flow upward while passing through the outside of the outlet pipe 120 to be discharged.

Here, the first heating element 400 and the second heating element 500 capable of induction heating by the induction coil 300 may be provided inside the housing 200 . In this case, the first heating element 400 may be provided to be spaced apart from the inside of the induction coil 300 , and the second heating element 500 may be provided to be spaced apart from the outside of the induction coil 300 . In addition, the first heating element 400 and the second heating element 500 are formed of a cylindrical metal or a magnetic material, and when an alternating current flows through the induction coil 300 , the first heating element 400 and the second heating element 500 . An eddy current may be generated to heat the first heating element 400 and the second heating element 500 . In addition, the first heating element 400 may be disposed to be spaced apart from the inside of the induction coil 300 , and may be disposed so that both ends of the cylindrical open end face up and down. At this time, the upper end of the first heating element 400 may be coupled to the body 100 and connected to the inflow passage connected to the inlet pipe 110 , and the introduced cooling water may flow inside and outside the first heating element 400 together. So that the first heating element 400 may be connected to the inflow passage. In addition, the second heating element 500 may be disposed to be spaced apart from the outside of the induction coil 300 , and may be disposed so that both ends of the cylindrical shape are opened in the vertical direction. At this time, the upper end of the second heating element 500 may be coupled to the body 100 and connected to the discharge passage connected to the outlet pipe 120 , and the cooling water flows to the inside and the outside of the second heating element 500 together and then discharged. The second heating element 500 may be connected to the discharge flow path so that it can be merged in the flow path and discharged through the outlet pipe 120 . Thus, the cooling water introduced into the inlet pipe 110 passes through the inflow passage and flows downward along the inside of the induction coil 300 , so that the cooling water comes into contact with the inner and outer surfaces of the first heating element 400 . While flowing in the downward direction, it is possible to primarily heat exchange with the coolant at the inside and outside of the heated first heating element 400 at the same time. And the cooling water flowing downward and passing through the vicinity of the first heating element 400 makes a U-turn based on the lower end of the induction coil 300 to change the flow in the upward direction, and the cooling water flowing in the upward direction is the second heating element 500 . While flowing in the upward direction so as to come into contact with the inner and outer surfaces of the second heating element 500, heat exchange with the cooling water may be secondarily generated on the inside and outside of the heated second heating element 500 at the same time. Thereafter, the cooling water may be discharged to the outside through the outlet pipe 120 through the discharge passage. Alternatively, the cooling water introduced into the inlet pipe 110 passes through the inflow passage and flows downward to contact the inner or outer surface of the first heating element 400, and then U-turn based on the lower end of the induction coil 300. The second heating element 500 may flow upward to contact the inner surface or the outer surface and may be discharged to the outside through the outlet pipe 120 . At this time, the flowing cooling water may flow while in contact with the induction coil 300 , so that the induction coil 300 may be easily cooled.

And here, the induction coil 300 is formed of a waterproof coil with an insulating coating on the outer circumferential surface of the wire, and the body 100 has a lead-out hole 130 through which the extension wire 310 can pass, the extension wire 310 ) may be formed to pass through the lead-out hole 130 and be connected to the control unit 700 to seal between the extension line 310 and the lead-out hole 130 .

That is, since the induction coil 300 is formed of a waterproof coil with an insulating coating on the outer circumferential surface of the wire, it can be used as it is in a cylindrically wound shape without molding the wire with plastic injection molding, and the induction coil 300 is in direct contact with the coolant. Therefore, overheating of the induction coil 300 may be prevented. In addition, in the induction coil 300, an extension line 310 extending upwardly from a portion wound in a cylindrical shape passes through a draw-out hole 130 formed in the body 100 to be connected to the substrate 720 of the control unit 700. In this case, it may be formed to be sealed between the outer circumferential surface of the extension line 310 and the inner circumferential surface of the draw-out hole 130 .

Thus, the extension line 310 of the induction coil 300 that passes through the body 100 and is drawn out toward the control unit 700 is sealed to prevent leakage of coolant toward the control unit, and at the same time, the extension line 310 of the induction coil 300 is sealed. This can be fixed.

6 and 7 are an exploded perspective view and an assembled perspective view illustrating a structure in which the extension of the induction coil is sealed and waterproof according to an embodiment of the present invention.

As shown, the coolant heater of the present invention further includes a wire seal 320 that is inserted into and coupled to the lead-out hole 130 of the body 100 and coupled so that the extension wire 310 passes through the through-hole 321 . The contact surface of the draw-out hole 130 and the wire seal 320 may be tightly closed, and the contact surface of the wire seal 320 and the extension wire 310 may be closely sealed.

That is, the wire seal 320a is inserted and coupled to the lead-out hole 130 of the body 100, and the extension wire 310 is coupled to pass through the through hole 321 of the wire seal 320a, so that the contacted surfaces are It may be formed to be sealed by being in close contact with each other. In this case, the wire seal 320a may be formed of an elastic material, so that it may be easily inserted into the draw-out hole 130 and may have excellent sealing performance.

In addition, a pair of locking protrusions 322 spaced apart from each other are formed to protrude from the outer circumferential surface of the wire seal 320a. The wire seal 320a may be fixed to the body 100 .

That is, the wire seal 320a is formed with a pair of locking protrusions 322 spaced apart in the vertical direction from the outer circumferential surface to protrude, and the upper locking protrusion 322 is coupled to the upper surface around the draw-out hole 130 so as to be caught on the lower side. of the locking projection 322 is coupled to be caught on the upper surface of the periphery of the withdrawal hole 130 , and the wire seal 320a is stably interposed in the state inserted into the extraction hole 130 by a pair of locking projections 322 . It can be fixed with and can improve sealing force.

In addition, a contact protrusion 324 is formed to protrude from the outer circumferential surface of the wire seal 320 in contact with the lead-out hole 130 of the body 100 , and the wire seal is in contact with the extension line 310 of the induction coil 300 . A close contact protrusion 323 is formed on the inner circumferential surface of the 320 , the wire seal 320 is inserted into and coupled to the lead-out hole 130 of the body 100 , and the extension wire 310 penetrates the wire seal 320 . In a state coupled to pass through the ball 321 , the contact surfaces may be closed by pressing the contact protrusions 324 and 323 .

That is, the contact protrusions 324 and 323 are formed to protrude from the outer and inner peripheral surfaces of the wire seal 320, and the contact protrusions 324 and 323 can be pressed and sealed on the surface where the respective components are combined and contacted, so that the sealing force can be improved. .

In addition, it is coupled to the body 100 so that the upper end of the wire seal 320 is caught to limit movement in the upward direction, and a fixing cover 330 formed so that the extension line of the induction coil 300 passes through. can be done by

That is, when the fixing cover 330 is coupled and fixed to the upper side of the body 100 in which the draw-out hole 130 is formed, and the extension wire 310 is drawn out from the lower side of the wire seal 320 to pass through the upper side, the upper side is fixed By the cover 330, the wire seal 320 may be maintained in a coupled state without being pushed upward.

8 and 9 are an exploded perspective view and an assembled perspective view showing a structure in which the extension of the induction coil is sealed and waterproof according to another embodiment of the present invention.

As shown, the coolant heater of the present invention is coupled to the body 100 so that the lower end of the wire seal 320 is caught and movement in the downward direction is limited, and the extension line 310 of the induction coil 300 is It may further include a fixing plate 350 formed to pass through.

This is when the wire seal 320 is disposed on the lower side of the portion where the draw-out hole 130 is formed and is coupled to the body 100, rather than being inserted into the lead-out hole 130 of the body 100, the fixing plate 350 is installed. It is used to ensure that the wire seal 320b is in close contact with the body 100 and is fixed. At this time, when the extension wire 310 coupled to pass through the wire seal 320b is pulled downward, the wire seal 320b may not be separated from the state coupled to the body 100 . At this time, the upper end of the wire seal 320b may be caught on the body 100 to prevent upward movement, and the lower end may be caught on the fixing plate 350 to prevent downward movement.

In addition, a recess 150 is formed on the lower side of the draw-out hole 130 of the body 100 so that the wire seal 320b is inserted into the seating groove 150, and the extension line of the induction coil 300 ( 310) is passed and the lower end of the wire seal 320b is caught and further comprises a fixing plate 350 coupled to the body 100 so that movement in the downward direction is limited, and the seating groove 150 and the wire The contact surface of the seal 320b may be closely sealed, and the contact surface of the wire seal 320 and the extension wire 310 may be closely sealed.

Thus, the perimeter of the upper surface of the wire seal (320b), the outer peripheral surface and the periphery of the lower surface, which are side surfaces, are in close contact with the seating groove 150 and the fixing plate 350 to improve sealing force, and the wire seal 320b is provided in the seating groove 150 ) can be stably fixed in

In addition, a concave filling groove 140 is formed on the upper side of the draw-out hole 130 of the body 100 , the wire seal 320 is coupled to the body 100 , and the extension line 310 is connected to the wire seal 320 . ) is combined, the filling groove 140 may be filled with a filling material 340 to be sealed.

That is, the sealing power can be further improved by filling the extension line 310 part drawn upward through the draw-out hole 130 of the body 100 with a filler 340 such as an epoxy resin or silicone and drying or curing, At this time, the filling groove 140 concave downwards may be formed on the upper side of the draw-out hole 130 of the body 100 to facilitate filling the filling material 340 .

And the wire seal 320 may be formed in a separated form to be inserted into and coupled to each of the draw-out holes 130 as shown, or may be formed as a single unit and be formed to be coupled to the lower side of the draw-out holes 130 . and may be formed in various other forms.

In addition, the body 100 is made to further include a wire seal 320 coupled to the portion in which the lead-out hole 130 is formed and coupled so that the extension line 310 passes through the through hole 321 , the body 100 ) and the contact surface of the wire seal 320 are closely sealed, and the contact surface of the wire seal 320 and the extension wire 310 is closely sealed and formed in a cylindrical shape so that the induction coil 300 is wound on the outside, a bobbin 600 coupled to the body 100 and the housing 200; It may be made to further include.

That is, when the contact surface with the body 100 and the extension line 310 is sealed using the wire seal 320, the induction coil 300 is wound and fixed to the outside of the bobbin 600 formed in a cylindrical shape. And by fixing the bobbin 600 to the body 100 and the housing 200 to be fixed, it is possible to prevent the extension wire 310 extending from the induction coil 300 from shaking.

In addition, an extension wire fixing part 602 is formed on the bobbin 600 , so that the extension wire 310 of the induction coil 300 may be fixed to the extension wire fixing part 602 .

That is, the extension wire fixing part 602 may be formed on the bobbin 600 so that the extension wires 310 of the induction coil 300 are fixed and not shaken, and accordingly, the induction coil 300 can be firmly fixed. damage can be prevented. At this time, the extension wire fixing part 602 is formed to penetrate in the direction in which the extension wire 310 of the induction coil 300 is arranged and is formed in a 'C' shape with one side open, the extension wire 310 is It may be inserted through an open portion of the extension wire fixing part 602 from one side and fixed to the extension wire fixing part 602 .

In addition, in the induction coil 300, the extension wire 310 is vertically disposed so that it can be coupled to the wire seal 320. The extension line fixing part 602 may be arranged in a vertical direction.

That is, since the sealing force at the contact surface between the wire seal 320 and the extension wire 310 is improved when the extension wire 310 is fixed to be vertically disposed, the lead-out hole 130 of the body 100, the wire seal 320 and the bobbin It may be arranged in a vertical direction so that the central axis of the extension line fixing part 602 of 600 coincides with each other.

In addition, the induction coil 300 may be wound over a single winding layer in the radial direction.

That is, the induction coil 300 may be wound in a cylindrical shape, and in this case, the induction coil 300 may be formed as a single winding layer as one layer or as a double or more winding layer in which a plurality of layers are stacked in the radial direction. have. Here, when the induction coil (3000 is formed as a single winding layer, the performance can be adjusted only by adjusting the length by increasing the number of times it is wound in a cylindrical shape, when the winding layer is formed with a plurality of layers, it is relatively relatively compared to forming a single winding layer. It has the advantage of being able to make a compact configuration because the length can be shortened.

In addition, the induction coil 300 may have an even number of winding layers.

That is, as shown as an example, when the winding layer is formed with two layers having an even number, it is wound using one connected wire so that the two extension wires 310 are disposed on the upper side of the induction coil 300 in the same direction. Therefore, the design and configuration of the induction coil 300 may be very easy.

And the control unit 700 may be formed on the upper side of the body 100 . At this time, the control unit 700 may have a control case 710 coupled to the body 100 or may be formed integrally with the body 100, and the control case 710 may have a hollow interior and an open top. The substrate 720 and the electronic device 730 may be provided and fixed therein, and the upper cover 740 may be coupled to the open upper side of the control case 710 .

In addition, the body 100 is connected to the inlet pipe 110, a horizontal inflow passage 111 is formed along the circumferential direction in the horizontal direction, and is formed vertically through the horizontal inflow passage 111 and the first 1 A vertical inflow passage 112 is formed so that the inside and outside of the heating element 400 communicate together, and the body 100 is connected to the outlet pipe 120 in the horizontal direction along the circumferential direction. The discharge passage 121 and the vertical discharge passage 122 may be formed to penetrate in the vertical direction so that the horizontal discharge passage 121 and the inner and outer sides of the second heating element 500 communicate with each other.

That is, a vortex is generated in the body 100 while the coolant introduced through the inlet pipe 110 is rotated to easily flow into the interior of the housing 200, and the horizontal inflow passage 111 along the circumferential direction in the horizontal direction. is formed and the vertical inflow passage 112 in the vertical direction is formed so as to be connected to the horizontal inflow passage 111. As the cooling water flows along the horizontal inflow passage 111 and rotates, it flows in the downward direction and flows spirally. while being able to pass through the inside and outside of the first heat generating agent 400 together. In addition, a vertical discharge flow path 122 is formed in the body 100 so that the coolant flowing upward while passing both the inside and the outside of the second heating element 500 is rotated in the circumferential direction to flow spirally. The horizontal discharge flow path 121 is formed along the circumferential direction in the horizontal direction so as to be connected to the vertical discharge flow path 122 , and may be connected to the outlet pipe 120 . In this case, the vertical inflow passage 112 and the vertical discharge passage 122 may be formed in the bobbin 600 .

The present invention is not limited to the above-described embodiments, and the scope of application is varied, and anyone with ordinary knowledge in the field to which the present invention pertains without departing from the gist of the present invention as claimed in the claims It goes without saying that various modifications are possible.

1000: coolant heater
100: body
110: inlet pipe 111: horizontal inflow path
112: vertical inflow path
120: outlet pipe 121: horizontal discharge flow path
122: vertical discharge flow path 123: discharge guide part
130: draw-out hole 140: filling groove
150: Anchi Home
200: housing
300: induction coil 310: extension wire
320 (320a, 320b): wire seal
321: through hole 322: stumbling block
323: close contact 324: close contact
330: fixed cover 340: filler
350: fixed plate
400: first heating element 401: keyway
500: second heating element 501: keyway
600: bobbin
601a: fastener 601b: hook
602: extension wire fixing part
610: support 611: coupling groove
620: coil cover 621: anti-rotation groove
630: bobbin cover 631: through hole
632: fixing guide 633: key
640: fastening means
700: control unit
710: control case 720: board
730: electronic device 740: upper cover

Claims (13)

a body 100 having an inlet pipe 110 through which the cooling water is introduced and an outlet pipe 120 through which the cooling water is discharged, which is disposed on the upper side;
a housing 200 having a hollow interior and being coupled to the body 100 so that the hollow interior is sealed;
an induction coil 300 provided inside sealed by the body 100 and the housing 200;
a first heating element 400 spaced apart from the inside of the induction coil 300; and
a second heating element 500 provided to be spaced apart from the induction coil 300; is made, including
The induction coil 300 is formed of a waterproof coil with an outer circumferential surface of the element wire coated with insulation, and the body 100 has a lead-out hole 130 through which the extension wire 310 can pass, so that the extension wire 310 is Cooling water heater, characterized in that it is connected to the control unit (700) through the draw-out hole (130) and is formed to be sealed between the extension line (310) and the draw-out hole (130).
According to claim 1,
It is inserted into and coupled to the lead-out hole 130 of the body 100 and further includes a wire seal 320 coupled to the extension line 310 to pass through the through-hole 321,
The cooling water heater, characterized in that the contact surface of the draw-out hole (130) and the wire seal (320) is closely sealed, and the contact surface of the wire seal (320) and the extension wire (310) is closely sealed and sealed.
3. The method of claim 2,
A pair of locking protrusions 322 spaced apart from each other are formed to protrude from the outer peripheral surface of the wire seal 320, and the periphery of the lead-out hole 130 of the body 100 is hung between the locking protrusions 322, the wire seal (320) Cooling water heater, characterized in that fixed to the body (100).
3. The method of claim 2,
A contact protrusion 324 is formed to protrude from the outer circumferential surface of the wire seal 320 in contact with the lead-out hole 130 of the body 100 , and the wire seal 320 is in contact with the extension line 310 of the induction coil 300 . ) is formed with a close contact protrusion 323 on the inner circumferential surface,
In a state in which the wire seal 320 is inserted into and coupled to the lead-out hole 130 of the body 100 and the extension wire 310 is coupled to pass through the through-hole 321 of the wire seal 320, the contact protrusion Cooling water heater, characterized in that the contact surfaces are sealed by pressing (324, 323).
3. The method of claim 2,
It is coupled to the body 100 so that the upper end of the wire seal 320 is caught to limit movement in the upward direction, and further comprises a fixing cover 330 formed so that the extension line of the induction coil 300 passes through Cooling water heater, characterized in that.
3. The method of claim 2,
It is coupled to the body 100 so that the lower end of the wire seal 320 is caught to limit movement in the downward direction, and further includes a fixing plate 350 formed so that the extension line 310 of the induction coil 300 passes. Cooling water heater, characterized in that made by
3. The method of claim 2,
A recess 150 is formed on the lower side of the draw-out hole 130 of the body 100, and the wire seal 320 is inserted into the seating groove 150,
The extension line 310 of the induction coil 300 is passed through and the lower end of the wire seal 320 is caught to limit movement in the downward direction, and a fixing plate 350 coupled to the body 100 is further included. ,
The cooling water heater, characterized in that the contact surface of the seating groove (150) and the wire seal (320) is closely sealed, and the contact surface of the wire seal (320) and the extension wire (310) is closely sealed and sealed.
The method of claim 1,
A concave filling groove 140 is formed on the upper side of the withdrawal hole 130 of the body 100 , the wire seal 320 is coupled to the body 100 , and the extension line 310 is connected to the wire seal 320 . Cooling water heater, characterized in that the filler (340) is filled in the filling groove (140) after being coupled to be sealed.
According to claim 1,
The body 100 further includes a wire seal 320 coupled to the portion in which the lead-out hole 130 is formed and coupled so that the extension line 310 passes through the through hole 321 , and the body 100 and The contact surface of the wire seal 320 is tightly closed, and the contact surface of the wire seal 320 and the extension wire 310 is tightly closed and sealed,
a bobbin 600 formed in a cylindrical shape, the induction coil 300 is wound on the outside, and coupled to the body 100 and the housing 200; Cooling water heater, characterized in that it further comprises.
10. The method of claim 9,
An extension wire fixing part (602) is formed on the bobbin (600), and the extension wire (310) of the induction coil (300) is fixed to the extension wire fixing part (602).
11. The method of claim 10,
The induction coil 300 has the extension wire 310 vertically arranged so that it can be coupled to the wire seal 320, so that the extension wire height of the draw-out hole 130 of the body 100, the wire seal 320 and the bobbin 600 The cooling water heater, characterized in that the top portion (602) is vertically aligned.
According to claim 1,
The induction coil (300) is a coolant heater, characterized in that wound over a single winding layer in a radial direction.
13. The method of claim 12,
The induction coil (300) is a coolant heater, characterized in that the winding layer is formed in an even number.

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