KR102478729B1 - Cooling-water heater - Google Patents

Abstract

The present invention relates to a cooling water heater, which is formed in a swirl structure so that a vortex-shaped vortex is formed in cooling water passing around a heating element to increase the flow rate of the cooling water flowing while in contact with the heating element, thereby improving heat exchange efficiency between the cooling water and the heating element. It relates to a coolant heater capable of improving and preventing overheating of a heating element.

Description

Cooling-water heater {Cooling-water heater}

The present invention relates to a cooling water heater, and to a cooling water heater capable of improving heat exchange efficiency between the cooling water and a heating element and preventing overheating of the heating element by increasing the flow rate of the cooling water by allowing the cooling water passing around the heating element to form a vortex. it's about

A vehicle driven by an engine using gasoline or diesel as an energy source is currently the most common type of vehicle, but the need for a new energy source for such a vehicle energy source is not only environmental pollution but also due to various causes such as a decrease in oil reserves. BACKGROUND OF THE INVENTION As a bar that is gradually emerging, electric vehicles, hybrid vehicles, and fuel cell vehicles are currently being put into practical use or are being developed.

However, in electric vehicles, hybrid vehicles, and fuel cell vehicles, a heating system using a coolant cannot 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 oil-based engine as a driving source, a lot of heat is generated from the engine, and a cooling water circulation system is provided to cool the engine, and the heat absorbed by the cooling water from the engine is used to heat the room. is being used for However, since a lot of heat generated in the engine is not generated in the driving sources of electric vehicles, hybrid vehicles, and fuel cell vehicles, there are limitations in using these conventional heating methods.

Accordingly, in electric vehicles, hybrid vehicles, fuel cell vehicles, etc., various studies have been conducted, such as adding a heat pump to the air conditioning system so that it can be used as a heat source, or providing a separate heat source such as an electric heater. there is. Among them, electric heaters can more easily heat cooling water without significantly affecting an air conditioning system, and are currently widely used.

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

In a conventional induction-type coolant heater used in a dual fuel cell vehicle to heat coolant, a high frequency generator 30 is electrically connected to a 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 coolant flow pipe (2) made of a magnetic metal material, and when an alternating current flows through the induction coil (31) using the power of the fuel cell stack (10), the magnetic field that is changed 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, and thus 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, since the cooling water passes through the inside of the cooling water flow pipe but passes in a straight line, the flow rate is slow, so the heat exchange efficiency between the cooling water and the heating element decreases, and the cooling water flow pipe, which is the heating element, may overheat. there is.

KR 2011-0075118 A1 (2011.07.06)

The present invention has been made to solve the above problems, and an object of the present invention is to form a vortex in the cooling water passing around the heating element, thereby increasing the flow rate of the cooling water flowing while in contact with the heating element, thereby reducing the gap between the cooling water and the heating element. An object of the present invention is to provide a cooling water heater capable of improving heat exchange efficiency and preventing overheating of a heating element.

In the cooling water heater 1000 of the present invention for achieving the above object, the space 130 is formed concave upward from the lower surface, and the inlet pipe 110 is connected to allow cooling water to flow into the space 130. ) and a body 100 having an outlet pipe 120 connected to discharge cooling water from the space 130; A housing 200 formed concavely from the upper surface to the lower side and having an open top coupled to the body 100 to seal the open top; an induction coil 300 provided inside the housing 200; a first heating element 400 provided inside the housing 200 and spaced apart from the outside of the induction coil 300; a second heating element 500 provided inside the housing 200 and spaced apart from the inside of the induction coil 300; And provided inside the body 100, an inlet hole 612 is formed in a spiral shape such that the upper side is connected to the inlet pipe 110 and the lower side is connected to the first heating element 400, and the second heating element A first bobbin cover 610 having a discharge hole 614 spirally formed such that the lower side is connected to 500 and the upper side is connected to the outlet pipe 120; Including, the cooling water introduced into the inlet pipe 110 comes into contact with the first heating element 400 through the inlet hole 612 and flows, then comes into contact with the second heating element 500 and flows to the discharge hole 614 A cooling water flow path may be formed to be discharged to the outlet pipe 120 through ).

In addition, the first heating element 400 and the second heating element 500 are formed in a cylindrical shape and are arranged so that both open ends face up and down, so that the cooling water introduced into the inlet pipe 110 is the first heating element 400. ) and then make a U-turn on the bottom surface of the housing 200, flow upward to contact the second heating element 500, and form a cooling water flow path to be discharged to the outlet pipe 120. can

In addition, an inlet-side flow guide 611 may be formed in the first bobbin cover 610 to guide a flow of cooling water in a flow path connecting the inlet pipe 110 and the inlet hole 612 .

In addition, the inlet-side flow guide 611 is formed so that one end faces the inlet pipe 110 and the other end faces the inlet hole 612, and a plurality of them may be spaced apart from each other.

In addition, a partition plate 613 is formed between the inlet hole 612 and the outlet hole 614 in the first bobbin cover 610, and the passage through which the cooling water flows and the cooling water is formed by the partition plate 613. The discharge flow path may be partitioned.

In addition, the second bobbin cover 620 coupled to the lower side of the first bobbin cover 610 and disposed between the first bobbin cover 610 and the heating elements 400 and 500 and the induction coil 300 is further provided. The second bobbin cover 620 has a spiral inlet hole 622 so that the inlet hole 612 of the first bobbin cover 610 and the first heating element 400 are connected, and the The discharge hole 624 may be spirally formed so that the second heating element 500 and the discharge hole 614 of the first bobbin cover 610 are connected.

In addition, an insulating ring 630 interposed between the second bobbin cover 620 and the second heating element 500 may be further included.

In addition, the distributor 800 is spaced apart from the inside of the second heating element 500 and has a lower side coupled to the housing 200 and an upper side coupled to the first bobbin cover 610.

In addition, a flow guide 810 disposed between the bottom surface of the housing 200, the heating elements 400 and 500, and the induction coil 300 is further included, and is in contact with the first heating element 400 and flows. The cooled water may flow toward the second heating element 500 as a vortex is formed by the connection part flow guide 810 .

In addition, it further includes a distributor and guide fixing part 820 coupled to the bottom surface of the housing 200, and the distributor and guide fixing part 820 protrudes upward from the plate part 821 formed in a plate shape. 822 is formed, a plurality of fixing holes 823 are formed through, the connection part flow guide 810 is coupled to the lower side of the distributor 800, and the connection part flow guide 810 has a downward protrusion 812 Is formed to protrude, the lower side of the distributor 800 is inserted into the protruding pin 821, and the protrusion 812 may be inserted into the fixing hole 822 to be coupled.

In the cooling water heater of the present invention, a vortex is formed in the cooling water flowing into the heating element so that the flow rate of the cooling water flowing while in contact with the heating element increases, thereby improving the heat exchange efficiency between the cooling water and the heating element and preventing the heating element from overheating. There are advantages.

In addition, a vortex may be formed in the cooling water passing through the first heating element and flowing into the second heating element, and a vortex may be formed in the cooling water discharged through the second heating element to improve heat exchange efficiency and prevent overheating of the heating element. .

1 and 2 are schematic and cross-sectional views showing a conventional cooling water heater.
3 and 4 are an assembled perspective view and an exploded perspective view showing the cooling water heater of the present invention.
5 is a front cross-sectional view showing the cooling water heater of the present invention.
6 is an upper plan view of the upper part of the body showing the flow of the cooling water of the first bobbin cover into which the cooling water flows according to the present invention, as seen by cutting it in a horizontal direction;
7 is a plan view of a lower side excluding a housing and an induction coil showing the flow of cooling water in a portion of a second bobbin cover from which cooling water is discharged according to the present invention;
8 is a perspective view showing a swirl flow structure from a first heating element to a U-turned and flowed toward a second heating element and an upper flowed and discharged part according to the present invention.
9 is a bottom plan view illustrating a swirl structure of cooling water formed by flow guides of a connection part;
10 to 13 are exploded perspective views and assembled perspective views showing structures of bobbin covers according to the present invention.

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

3 and 4 are 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. In addition, FIGS. 6 to 9 are diagrams showing swirl flow of cooling water, and FIGS. 10 to 13 are perspective views showing structures of bobbin covers.

As shown, in the cooling water heater 1000 of the present invention, the space 130 is formed concave upward from the lower surface, and the inlet pipe 110 connected so that the cooling water flows into the space 130 and the space part A body 100 having an outlet pipe 120 connected to discharge cooling water from 130; A housing 200 formed concavely from the upper surface to the lower side and having an open top coupled to the body 100 to seal the open top; an induction coil 300 provided inside the housing 200; a first heating element 400 provided inside the housing 200 and spaced apart from the outside of the induction coil 300; a second heating element 500 provided inside the housing 200 and spaced apart from the inside of the induction coil 300; And provided inside the body 100, an inlet hole 612 is formed in a spiral shape such that the upper side is connected to the inlet pipe 110 and the lower side is connected to the first heating element 400, and the second heating element A first bobbin cover 610 having a discharge hole 614 spirally formed such that the lower side is connected to 500 and the upper side is connected to the outlet pipe 120; Including, the cooling water introduced into the inlet pipe 110 comes into contact with the first heating element 400 through the inlet hole 612 and flows, then comes into contact with the second heating element 500 and flows to the discharge hole 614 A cooling water flow path may be formed to be discharged to the outlet pipe 120 through ).

First of all, the body 100 is a part forming an outer shape, and a flow path through which cooling water is introduced and discharged is formed. That is, an inlet pipe 110 may be formed in the body 100 to allow cooling water to flow in, an outlet pipe 120 may be formed to discharge the cooling water, and a space portion 130 may be concavely formed so that the lower side is open. The pipe 110 and the outlet pipe 120 may be connected to communicate with the space portion 130 .

The housing 200 is a part that forms an external shape together with the body 100, and may be formed so that the hollow interior of the housing 200 can be sealed by combining the body 100 and the housing 200. That is, the housing 200 may be concave so that the upper side is open and formed in a container shape, and the upper circumference may be sealed by coupling the open upper side to the body 100, and the inside of the body 100 The space portion 130 and the hollow interior of the housing 200 may be formed to communicate with each other. At this time, in a state where the body 100 is disposed on the upper side and the housing 200 is disposed on the lower side, it may be coupled vertically to form a standing type. In addition, the sealing member 131 may be interposed on the surface where the body 100 and the housing 200 come into contact with each other so that the contact surface is sealed. After forming and inserting a sealing member such as an O-ring into the sealing member seating groove, the body 100 and the housing 200 are coupled so that the tightly coupled portion is sealed.

The induction coil 300 may be provided inside the sealed housing 200 by coupling the body 100 and the housing 200 . Here, the induction coil 300 may be spirally wound multiple times and formed in the form of a closely attached coil spring, and in the induction coil 300, the extension lines extending upward from the wound portion of the coil penetrate the body 100. It may be formed to be drawn out, and the extension lines may be electrically connected to the control unit 700 formed on one side of the body 100.

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 spaced apart from the outside of the induction coil 300, and the second heating element 500 may be spaced apart from the inside of the induction coil 300. In addition, the first heating element 400 and the second heating element 500 are formed of cylindrical metal or magnetic material, and when an AC current flows through the induction coil 300, the first heating element 400 and the second heating element 500 Eddy currents may be generated to heat the first heating element 400 and the second heating element 500 .

The first bobbin cover 610 is disposed in the space 130 inside the body 100, and has a flow path connected to the inlet pipe 110 and a flow path connected to the outlet pipe 120, so that the cooling water is the part that forms the flow of That is, an inlet hole 612 and an outlet hole 614 are formed in the first bobbin cover 610, and the inlet hole 612 is formed in a spiral shape so that the upper side is connected to the inlet pipe 110 and the lower side is the first heating element. 400, and the discharge hole 614 is formed in a spiral shape so that the lower side is connected to the second heating element 500 and the upper side is connected to the outlet pipe 120. Here, that the inlet hole 612 is connected to the first heating element 400 means that the flow path is connected so that the coolant passing through the inlet hole 612 can contact and flow with the first heating element 400, and the discharge hole ( 614) is connected to the second heating element 400 means that the flow path is connected so that the coolant flowing while contacting the second heating element 500 can be discharged through the discharge hole 614.

Thus, the cooling water introduced into the inlet pipe 110 comes into contact with the first heating element 400 through the inlet hole 612 formed in the first bobbin cover 610 and flows, then comes into contact with the second heating element 500 and flows. A coolant passage may be formed so that the coolant is discharged to the outlet pipe 120 through the discharge hole 614 .

At this time, while the cooling water passes through the inlet hole 612 formed in a spiral shape, a vortex in the form of a vortex is generated and introduced toward the first heating element 400. 400), heat exchange may be achieved. In addition, the cooling water that has passed through the first heating element 400 flows while coming into contact with the second heating element 500 and passes through the spiral discharge hole 614. Vortex in the form of a vortex is generated, and while cooling water flows from the lower side to the upper side while rotating along the circumferential direction, it may come into contact with the second heating element 500 to perform heat exchange and then be discharged.

Accordingly, in the cooling water heater of the present invention, a vortex is formed in the cooling water flowing into the heating element, so that the flow rate of the cooling water flowing while in contact with the heating element increases, thereby improving the heat exchange efficiency between the cooling water and the heating element and preventing the heating element from overheating. There are advantages to being able to In addition, a vortex may be formed in the cooling water flowing through the first heating element and in contact with the second heating element, so that heat exchange efficiency may be improved and overheating of the heating element may be prevented.

In addition, the first heating element 400 and the second heating element 500 are formed in a cylindrical shape and are arranged so that both open ends face up and down, so that the cooling water introduced into the inlet pipe 110 is the first heating element 400. ) and then make a U-turn on the bottom surface of the housing 200, flow upward to contact the second heating element 500, and form a cooling water flow path to be discharged to the outlet pipe 120. can

That is, the coolant introduced into the inlet pipe 110 passes through the inlet hole 612 of the first bobbin cover 610, flows downward to contact the first heating element 400, and heat exchanges with the housing 200. A U-turn is made at the lower side of the induction coil 300 near the bottom of the , and the heat is exchanged while flowing upward to come into contact with the second heating element 500, passing through the discharge hole 614 to the outside through the outlet pipe 120. may be discharged.

In addition, an inlet-side flow guide 611 may be formed in the first bobbin cover 610 to guide a flow of cooling water in a flow path connecting the inlet pipe 110 and the inlet hole 612 .

As shown, the inlet flow guide 611 is formed on the upper surface of the first bobbin cover 610 in the form of being erected in an upward direction, so that the cooling water flowing into the inlet pipe 110 flows along the inlet flow guide 611. It can be made to flow smoothly towards the ball 612.

In addition, the inlet-side flow guide 611 is formed so that one end faces the inlet pipe 110 and the other end faces the inlet hole 612, and a plurality of them may be spaced apart from each other.

That is, one end of the inlet-side flow guide 611 is connected to the inlet pipe 110 so that the cooling water can generate rotational flow in the circumferential direction in advance before the cooling water flows into the inlet hole 612 of the first bobbin cover 610. It may be formed so that the other end faces the inlet hole 612. In addition, a plurality of inflow-side flow guides 611 may be disposed spaced apart from each other, and may be formed in various forms such as a straight line, a curved shape, and a bent straight line when viewed from the upper side so as to generate rotational flow. In addition, since the flow of cooling water is distributed by the flow guides 611 on the inlet side spaced apart from each other and then introduced into the inlet hole 612, the size of the inlet hole 612 is formed long in the circumferential direction or a plurality of inlet holes 612 are formed. When formed as, the cooling water may be distributed and flowed toward the first heating element 400.

In addition, a partition plate 613 is formed between the inlet hole 612 and the outlet hole 614 in the first bobbin cover 610, and the passage through which the cooling water flows and the cooling water is formed by the partition plate 613. The discharge flow path may be partitioned.

That is, both the inlet hole 612 and the outlet hole 614 formed in the first bobbin cover 610 may be formed to penetrate the inside of the first bobbin cover 610, but as shown, the inlet pipe 110 Since the inflow passage connecting the inlet hole 612 and the outlet pipe 120 and the outlet hole 614 may be formed in an open form, respectively, the inlet hole 612 and the inlet hole 612 are used to partition them. A partition plate 613 may be formed between the discharge holes 614 to partition the inflow passage and the discharge passage. At this time, the partition plate 613 may be formed in an upright plate shape extending upward from the first bobbin cover 610 so that the upper end may come into close contact with the inner upper surface of the body 100 . And when viewed from the upper side, one end is formed to extend to the inner circumferential surface of the inside of the body 100 at a position between the inlet pipe 110 and the outlet pipe 120, and between the inlet hole 612 and the outlet hole 614 Gina may be formed so that the other end extends to the inner circumferential surface of the inner side of the body 100.

In addition, the second bobbin cover 620 coupled to the lower side of the first bobbin cover 610 and disposed between the first bobbin cover 610 and the heating elements 400 and 500 and the induction coil 300 is further provided. The second bobbin cover 620 has a spiral inlet hole 622 so that the inlet hole 612 of the first bobbin cover 610 and the first heating element 400 are connected, and the The discharge hole 624 may be spirally formed so that the second heating element 500 and the discharge hole 614 of the first bobbin cover 610 are connected.

This is so that the bobbin cover is composed of the first bobbin cover 610 and the second bobbin cover 610, so that the two bobbin covers are coupled. At this time, a spiral inlet hole 622 is also formed in the second bobbin cover 620 to be connected to the spiral inlet hole 612 formed in the first bobbin cover 610, so that the two inlet holes 612 and 614 are connected to each other. It can be formed in the form of a spiral. In addition, a spiral discharge hole 624 is also formed in the second bobbin cover 620 to be connected to the spiral discharge hole 614 formed in the first bobbin cover 610, so that the two discharge holes 622 and 624 are connected to each other. It can be formed in the form of a spiral. In addition, the first bobbin cover 610 is disposed on the upper side and the second bobbin cover 620 is disposed on the lower side, and the second bobbin cover 610 is disposed between the heating elements 400 and 500 and the induction coil 300. A bobbin cover 620 may be disposed.

Thus, it is easy to form a spiral inlet hole and a discharge hole, and it may be easy to form a longer spiral inlet hole and a discharge hole. In particular, in the case of manufacturing by injection molding using a plastic material, there is no need to process a separate flow path, so manufacturing is very easy.

In addition, an insulating ring 630 interposed between the second bobbin cover 620 and the second heating element 500 may be further included.

This is because the temperature of the second heating element 500 can be relatively higher than that of the first heating element 400, and can instantly rise to 500 degrees Celsius, so the second bobbin cover 620 ) may be prevented from being deformed, the heat insulation ring 630 may be interposed between the lower side of the second bobbin cover 620 and the upper side of the second heating element 500. At this time, the heat insulation ring 630 may be formed to be coupled to the lower side of the second bobbin cover 620, coupled to the upper side of the second heating element 500, or coupled to both. In addition, as shown, the cooling water passing through the inside and outside of the second heating element 500 may be formed in a C-shaped ring shape with a part cut out so that the coolant can smoothly flow toward the discharge hole 624. , can be formed of a material with relatively low thermal conductivity.

In addition, the induction coil 300 may be formed to be wound and fixed to the outside of the bobbin 600 formed in a cylindrical shape, and a cylindrical coil cover 640 may be fitted to the outside of the induction coil 300 . The top of the bobbin 600 and the top of the coil cover 640 are coupled to the lower side of the second bobbin cover 620, and the bottom of the bobbin 600 and the bottom of the coil cover 640 are inside the housing 200. It may be arranged so as to be spaced apart from the bottom surface to the upper side. In addition, the upper end of the first heating element 400 and the upper end of the second heating element 500 are coupled to the lower side of the second bobbin cover 620, and the upper end of the first heating element 400 and the lower end of the second heating element 500 The silver may be arranged to be spaced upward from the inner bottom surface of the housing 200 . Thus, all of the introduced cooling water flows in contact with the first heating element 400, and then a flow path may be formed so that the cooling water makes a U-turn near the inner bottom surface of the housing 200 and flows in contact with the second heating element 500. In addition, the cooling water may flow so as to come into contact with any one or more of the inner and outer surfaces of the first heating element 400, and similarly, the cooling water may flow into contact with any one or more of the inner and outer surfaces of the second heating element 500. It can flow into contact.

In addition, the distributor 800 is spaced apart from the inside of the second heating element 500 and has a lower side coupled to the housing 200 and an upper side coupled to the first bobbin cover 610.

That is, as shown, the distributor 800 is formed vertically in a cylindrical shape so that the upper side and the lower side can be coupled to the housing 200, and the upper side has a through hole 625 formed in the second bobbin cover 620. It may pass through and be coupled and fixed to be inserted into the insertion groove 615 formed in the first bobbin cover 610 . Also, the distributor 800 may be disposed to be spaced apart from the inside of the second heating element 500, and the distributor 800 may be disposed on the central axis of the second heating element 500. Thus, the flow rate of cooling water passing through the inside of the second heating element 500 is increased, thereby improving heat exchange efficiency with the second heating element 500 .

In addition, a flow guide 810 disposed between the bottom surface of the housing 200, the heating elements 400 and 500, and the induction coil 300 is further included, and is in contact with the first heating element 400 and flows. The cooled water may flow toward the second heating element 500 as a vortex is formed by the connection part flow guide 810 .

That is, a passage through which coolant can flow and make a U-turn may be formed between the bottom surface of the housing 200 and the heating elements 400 and 500 and the induction coil 300 by the connection part flow guide 810 . In addition, the connection part flow guide 810 may be formed in various shapes so as to form a vortex in the portion of the cooling water that flows through the first heating element 400 and flows to the second heating element 500, and as shown, It is formed in a plate shape erected and a plurality of connection flow guides 810 may be disposed, and may be formed in various forms such as a straight line inclined at a predetermined angle with respect to the radial direction when viewed from the upper side, or a curved shape. At this time, the connection part flow guide 810 has fixing grooves 811 concavely formed on the upper surface, and the lower ends of the heating elements 400 and 500, the bobbin 600, and the coil cover 640 are inserted into the fixing grooves 811. can be combined as much as possible. In addition, fixing protrusions 623 are formed on the lower surface of the second bobbin cover 620, and the heating elements 400 and 500, the bobbin 600, and the top of the coil cover 640 are fixed protrusions 623. It can be combined so as to be inserted between them.

In addition, it further includes a distributor and guide fixing part 820 coupled to the bottom surface of the housing 200, and the distributor and guide fixing part 820 protrudes upward from the plate part 821 formed in a plate shape. 822 is formed, a plurality of fixing holes 823 are formed through, the connection part flow guide 810 is coupled to the lower side of the distributor 800, and the connection part flow guide 810 has a downward protrusion 812 Is formed to protrude, the lower side of the distributor 800 is inserted into the protruding pin 821, and the protrusion 812 may be inserted into the fixing hole 822 to be coupled.

That is, the distributor and guide fixing part 820 may be coupled and fixed to the bottom surface of the housing 200, and for example, a concave groove is formed on the inner bottom surface of the housing 200, so that the distributor and guide fixing part 820 ) of the plate portion 821 may be coupled to be inserted into the groove. In addition, the distributor and guide fixing part 820 may be formed with a protruding pin 822 protruding upward from the plate part 821, and the lower part of the distributor 800 may be fitted and coupled to the protruding pin 822. In addition, a protrusion 812 protrudes downward from the connection part flow guide 810 so that the protrusion 812 can be inserted into and coupled to a fixing hole 823 formed in the plate portion 821 . At this time, the connection portion flow guide 810 may be formed so that an inner portion in the radial direction is coupled to or supported by the distributor 800 . Alternatively, the distributor and guide fixing unit 820 and the connection unit flow guide 810 may be integrally formed, and the distributor 800 may also be integrally formed.

In addition, the inlet holes 612 and 614, which are the sides through which the cooling water flows in, and the outlet holes 614, 624, which are the outlet sides, form spiral flow channels in the same direction, so that swirl-shaped vortices can be smoothly formed, and the connection part flow The vortex formed by the guide 810 may also be formed in the same direction so that the cooling water flows more smoothly.

In addition, holes penetrating vertically are formed in the first bobbin cover 610 and the second bobbin cover 620 so that the extension line of the induction coil 300 can be drawn upward, and a wire seal is coupled to the hole to The portion through which the extension line passes may be sealed.

In addition, holes are formed in the first bobbin cover 610 through the top and bottom to be connected to the discharge hole 614 through which the coolant is discharged, and a temperature sensor for measuring the water temperature of the coolant discharged after heat exchange is installed on the discharge hole 614. It can be. At this time, a hole penetrating the top and bottom of the body 100 may be formed so that the upper side of the temperature sensor is coupled to and fixed to the body and the lower side of the temperature sensor is positioned inside the discharge hole 614 .

In addition, the first bobbin cover 610 and the second bobbin cover 620 are formed in a shape corresponding to the inner circumferential shape of the space portion 130 of the body 100, and the first bobbin cover 610 and the second bobbin An outer circumferential surface of the cover 620 may be closely coupled to an inner circumferential surface of the space portion 130 . In addition, fastening holes in the form of threads are formed in the space 130 of the body 100, and coupling holes are formed in the first bobbin cover 610 and the second bobbin cover 620, and the first bobbin cover is operated by a fastening means. 610 and the second bobbin cover 620 may be coupled to and fixed to the space portion 130 of the body 100.

In addition, the body 100 and the housing 200 may be formed of a metal material to shield the magnetic field and electromagnetic waves generated in the sealed interior, and are formed of a metal material such as aluminum so that the induction coil 300, the second A magnetic field or electromagnetic waves generated from the first heating element 400 and the second heating element 500 may be blocked from being emitted to the outside.

In addition, the first heating element 400 and the second heating element 500 may be formed of a ferrite-based material having a very high magnetic permeability so that heat can be generated well by an induction method. At this time, the ferrite-based material may be, for example, STS430 of stainless steel. Also, the first heating element 400 and the second heating element 500 may be formed of a material having higher electrical resistance than the induction coil 300 .

In addition, the control unit 700 is formed on the upper side of the body 100 so as to be spaced apart from the upper side of the first heating element 400 and the second heating element 500, so that the control unit 700 controls the first heating element 400 and the second heating element It can be placed farthest away from (500). In addition, the main heating surfaces of the first heating element 400 and the second heating element 500 may be outer and inner circumferential surfaces, and the controller 700 is perpendicular to the main heating surfaces of the heating elements 400 and 500. ) can be disposed to minimize the effect of heat generated from the heating elements.

In addition, the electronic elements 730 are closely coupled to the bottom surface of the control case 710 of the control unit 700, so that the electronic elements 730 that generate a large amount of heat come into contact with the body 100 and exchange heat with the passing coolant, so that the electronic elements 730 are in contact with the body 100 and exchange heat with the cooling water passing through the electronic elements 730. Elements 730 may not overheat. In this case, the electronic element 730 may be a switching element for controlling the operation of the induction coil 300 . In addition, the control unit 700 may have the control case 710 formed separately and closely coupled to the body 100, or the body 100 and the control case 710 may be integrally formed. In addition, the controller case 710 is formed in a shape with a hollow interior and an open upper side, so that the board 720 and the electronic device 730 may be provided and fixed therein, and the electronic device 730 may be attached to the board 720. In a state in which they are fixed so that they are connected, the board 720 may be coupled to be fixed to the control unit case 710 in a horizontal state. In addition, the control cover 740 may be coupled to the open upper side of the control case 710, and the control case 710 and the control cover 740 are formed of aluminum, which is the same metal material as the body 100, so that the control unit 700) may be shielded from electromagnetic waves generated inside.

And the inlet pipe 110 and the outlet pipe 120 may be formed in various directions, may be formed in a horizontal direction as shown, the inlet pipe 110 and the outlet pipe 120 of the body 100 Formed in the same direction on one side, it is possible to increase workability when mounting on a vehicle or connecting a hose.

The present invention is not limited to the above embodiments, and the scope of application is diverse, and anyone with ordinary knowledge in the field to which the present invention belongs without departing from the gist of the present invention claimed in the claims Of course, various modifications are possible.

1000: coolant heater
100: body
110: inlet pipe 120: outlet pipe
130: space part
200: housing
300: induction coil
400: first heating element
500: second heating element
600: bobbin
610: first bobbin cover
611: inflow side flow guide 612: inlet hole
613: partition plate 614: discharge hole
615: insertion groove 616: coil take-out hole
617: coupling ball
620: second bobbin cover
621: inflow side flow guide 622: inlet hole
623: fixed protrusion 624: discharge hole
625: through hole 626: coil take-out hole
627: coupling hole
630: insulation ring 640: coil cover
700: control unit
710: control case 720: board
730: electronic device 740: control cover
800: divider
810: connection part flow guide 811: fixing groove
812: projection
820: distributor and guide fixing part 821: plate part
822: protruding pin 823: fixing hole

Claims (10)

A space portion 130 is formed concave upward from the lower surface, and an inlet pipe 110 connected to allow cooling water to flow into the space portion 130 and an outlet pipe 120 connected to discharge cooling water from the space portion 130 ) Body 100 formed;
a housing 200 concavely formed from an upper surface to a lower side and having an open top coupled to the body 100 to seal the open top;
an induction coil 300 provided inside the housing 200;
a first heating element 400 provided inside the housing 200 and spaced apart from the outside of the induction coil 300;
a second heating element 500 provided inside the housing 200 and spaced apart from the inside of the induction coil 300; and
It is provided inside the body 100, and an inlet hole 612 is formed in a spiral shape so that the upper side is connected to the inlet pipe 110 and the lower side is connected to the first heating element 400, and the second heating element ( 500) and a first bobbin cover 610 having a discharge hole 614 spirally formed so that the lower side is connected to the upper side and the outlet pipe 120; made up of, including
The coolant introduced into the inlet pipe 110 comes into contact with the first heating element 400 through the inlet hole 612 and flows, then comes into contact with the second heating element 500 and flows through the outlet hole 614 through the outlet pipe A cooling water heater characterized in that a cooling water flow path is formed to be discharged to (120).
According to claim 1,
The first heating element 400 and the second heating element 500 are formed in a cylindrical shape and arranged so that both open ends face up and down,
After the cooling water introduced into the inlet pipe 110 flows downward to contact the first heating element 400, it makes a U-turn on the bottom surface of the housing 200 and moves upward to contact the second heating element 500. A cooling water heater characterized in that a cooling water flow path is formed so that the cooling water flows into and is discharged to the outlet pipe 120.
According to claim 1,
Cooling water heater, characterized in that the first bobbin cover (610) is formed with an inlet-side flow guide (611) for guiding the flow of cooling water in a flow path connecting the inlet pipe (110) and the inlet hole (612).
According to claim 3,
The cooling water heater, characterized in that the inlet flow guide 611 is formed so that one end faces the inlet pipe 110 and the other end faces the inlet hole 612, and a plurality of them are spaced apart from each other.
According to claim 1,
In the first bobbin cover 610, a partition plate 613 is formed between the inlet hole 612 and the outlet hole 614, and the partition plate 613 provides a flow path through which cooling water is introduced and the cooling water is discharged. A cooling water heater characterized in that the flow path is partitioned.
According to claim 1,
A second bobbin cover 620 coupled to the lower side of the first bobbin cover 610 and disposed between the first bobbin cover 610 and the heating elements 400 and 500 and the induction coil 300 is further included is done,
The second bobbin cover 620 has a spiral inlet hole 622 so that the inlet hole 612 of the first bobbin cover 610 and the first heating element 400 are connected, and the second heating element 500 Coolant heater characterized in that the discharge hole 624 is formed in a spiral so that the discharge hole 614 of the first bobbin cover 610 is connected.
According to claim 6,
Cooling water heater characterized in that it further comprises an insulating ring (630) interposed between the second bobbin cover (620) and the second heating element (500).
According to claim 1,
Cooling water characterized in that it is provided spaced apart from the inside of the second heating element 500, and further comprises a distributor 800 having a lower side coupled to the housing 200 and an upper side coupled to the first bobbin cover 610. heater.
According to claim 1,
Further comprising a connection part flow guide 810 disposed between the bottom surface of the housing 200 and the heating elements 400 and 500 and the induction coil 300,
Coolant heater, characterized in that the flowing cooling water in contact with the first heating element (400) flows toward the second heating element (500) by forming a vortex by the connection part flow guide (810).
According to claim 9,
Further comprising a distributor and guide fixing part 820 coupled to the bottom surface of the housing 200,
In the distributor and guide fixing part 820, a protruding pin 822 is formed on the upper side of the plate part 821 formed in a plate shape, and a plurality of fixing holes 823 are formed through it,
The connection part flow guide 810 is coupled to the lower side of the distributor 800, and a protrusion 812 is protruded downward from the connection part flow guide 810, and the lower part of the distributor 800 is fitted into the protruding pin 821 A coolant heater characterized in that the protrusion 812 is inserted into the fixing hole 822 and coupled.

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