KR102141874B1 - Induction heater for vehicle - Google Patents

Abstract

The present invention relates to an induction heater for automobiles, and includes a heat sink and a housing having a closed cross-section shape having upper and lower straight portions, and a work coil is wound on the outer circumferential surface of the housing to generate heat through an increase in the heating area and length of the work coil. It is easy to increase. By installing a heat sink on the cover and installing a heating element on the heat sink, the heating element can be simply cooled without configuring a separate cooling channel.

Description

Induction heater for vehicle}

The present invention relates to an induction heater for automobiles, and more particularly, to an induction heater for automobiles capable of generating and heating water using a heating plate that generates heat by electromagnetic induction.

In general, a vehicle performs heating by supplying cooling water for engine cooling to a heater core for indoor heating to exchange heat with air blown into the room.

However, in the case of using a motor instead of an engine as a driving source such as an electric vehicle, since heating using engine heat is impossible, heating is performed using a heater using electricity, and an induction heater using electromagnetic induction heating as an electric heater for vehicles is used. have.

An example of a conventional induction heater is disclosed in Japanese Patent Application Laid-open No. Hei 9-289076 (hereinafter referred to as a prior document). The induction heater disclosed in the prior literature installs a heating element having a plurality of holes inside the housing having an inlet pipe and an outlet pipe through which water flows in and out, winds a work coil on the outside of the housing, and is equipped with a power supply unit. It consists of supplying high frequency AC power to the coil.

Therefore, when electric power is supplied to the work coil, heat is generated in the heating element by an electromagnetic induction action, and water passing through the housing is absorbed to generate heat. The heating water is supplied to a heater core (heat exchanger) for heating, and heating is performed by heating air discharged into the vehicle cabin.

However, in the conventional induction heater, assembling and maintenance are not good because the inlet pipe and the outlet pipe are located on opposite sides of the housing.

In addition, since the flow path area (inner area of the housing) is excessively large, the flow is unstable, and thus there is a high possibility of bubbles generation and stagnation, thereby causing a local overheating phenomenon, thereby deteriorating the heating performance and durability of the heater.

In addition, since it has a cylindrical structure, if the heating area and work coil length are increased to increase the heating performance, the size of the heater increases excessively, making it inappropriate as an automobile heater.

In addition, there is a problem in that the configuration of the heater is complicated, such as having to configure a separate cooling channel for cooling the heating element inside the power supply unit.

Accordingly, the present invention has been devised to solve the above problems, and it is easy to assemble and maintain, local heating is prevented, it can have sufficient heat generation performance with a smaller size, and the heating element of the power supply unit is simple. An object of the present invention is to provide an induction heater for automobiles that can be easily cooled with a configuration.

The present invention for achieving the above object, the heating plate having a closed cross-sectional shape formed long in the width direction, the housing is formed in the same cross-sectional shape as the heating plate and the heating plate is embedded, a work coil wound on the outer circumferential surface of the housing And a cover on which the inlet pipe and the outlet pipe are formed and mounted to the front opening of the housing.

The heating plate and the housing respectively include a top plate and a bottom plate, and curved portions connecting both sides of the top plate and the bottom plate.

The heating plate is spaced apart from the work coil as a whole.

A plate-shaped distribution plate is inserted into the heating plate, and the interior space of the heating plate is divided into an upper space and a lower space.

A raised portion in close contact with the heating plate is formed on the upper and lower surfaces of the distribution plate, and the interior space of the distribution plate is divided into an inflow observation space and a discharge observation space.

A baffle that is in close contact with the housing is provided on the upper and lower surfaces of the heating plate, and the inner space of the housing is divided into an inflow observation space and an outflow observation space.

The baffle is installed on the same line as the raised portion.

The engaging projection is formed on the baffle, and the engaging projection is inserted into the engaging groove formed on the inner circumferential surface of the housing.

The rear end of the baffle is formed in a T shape to fix the upper end of the heating plate and the rear end of the lower plate.

A rear flow path part is formed at the rear of the housing to flow the heating water from the inlet-side connection space to the discharge-side connection space.

A cover mounting portion protrudes around the front opening of the housing, a plurality of joining projections protrude on the outer circumference of the cover mounting portion and the cover, and the two joining projections are bolted to each other.

A heat sink assembly is formed through the cover, a heat sink is screwed into the heat sink assembly, and heating water inside the housing flows into the heat sink.

A heating element constituting a power supply unit for supplying power to the work coil to the heat sink is mounted in a surface contact state.

A partition wall is provided inside the heat sink to block heating water in the inlet-side connection space from directly moving to the discharge-side connection space.

A bypass passage is formed through the partition wall.

According to the present invention as described above, since both the heating water inlet pipe and the discharge pipe are installed on the same surface of the heater, assembly and maintenance inspection work can be easily performed.

The space in the housing is divided by the baffle and the distributor, the cross-sectional area of the flow path is reduced and the flow is stable. Accordingly, local air overheating is prevented by preventing the air layer from forming inside the housing by smoothly discharging air by heating water flow. Therefore, it is possible to prevent the heating performance and durability of the heater from being deteriorated due to local overheating.

Since the heater is formed in a flat oval shape as a whole, it is easy to increase the area of the heating plate and the length of the work coil, and thus has high heat generation performance even with a small size.

By providing a heat sink in which cooling water flows in front of the heater, the heat sink of the power supply unit is mounted on the heat sink, so that the heat generator can be easily cooled without adding a complicated configuration. This also helps make compact heaters.

1 is a perspective view of an induction heater for a vehicle according to the present invention.
2 is an exploded perspective view of an induction heater for a vehicle according to the present invention.
Figure 3 is a perspective view of a distributor that is one configuration of the present invention.
Figure 4 is a front view of a distributor assembled in the interior of the housing.
5 is a rear perspective view of a heat sink, which is one configuration of the present invention.
Figure 6 is a perspective view showing a state in which the heating element is mounted on the heat sink.
7 is an explanatory diagram of a heating water flow direction of an induction heater for a vehicle according to the present invention.

The present invention can be applied to various changes and can have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. The thickness of the lines or the size of components shown in the accompanying drawings may be exaggerated for clarity and convenience.

In addition, terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to a user's or operator's intention or precedent. Therefore, definitions of these terms should be made based on the contents throughout this specification.

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

1 and 2, the heating plate 10 having a closed cross-sectional shape formed long in the width direction (left and right when viewed from arrow A) and a heating plate 10 formed in the same cross-sectional shape as the heating plate 10 ) The housing 20 is inserted, the work coil 30 wound on the outer circumferential surface of the housing 20, the inlet pipe 41 and the outlet pipe 42 is formed and the cover is mounted to the front opening of the housing 20 Include 40.

The heating plate 10 is made of iron-based metal to enable heating by electromagnetic induction. The heating plate 10 is provided with an upper plate 11 and a lower plate 12 spaced a predetermined distance in the vertical direction, and both sides of the upper plate 11 and the lower plate 12 are formed in a shape connected by a round curved surface.

The housing 20 also includes a top plate 21 and a bottom plate 12 and both side curved portions that roundly connect their side surfaces, and the front is opened for insertion of the heating plate 10, and the rear is blocked. The rear portion of the housing 20 protrudes rearward than the upper plate 21 and the lower plate 22 in a range in which the heating plate 10 is installed inside the housing 20 to form a rear flow path portion 23. The housing 20 is made of aluminum or plastic so as not to generate heat when the magnetic field is formed by the work coil 30. This is also the case for the cover 40.

The heating plate 10 and the upper plates 11 and 21 and the lower plates 12 and 22 of the housing 20 are rectangular plates, and are parallel to each other.

The cover mounting portion 24 and the stopper 25 are protruded from the front end and rear side of the housing 20 (approximately, the portion where the rear flow path portion 23 starts) in the outer surface direction. The cover mounting portion 24 and the stopper 25 are formed over the entire circumference of the outer circumferential surface of the housing 20.

The work coil 30 is wound tightly between the cover mounting portion 24 and the stopper 25. The work coil 30 is blocked by movement in both directions by the cover mounting portion 24 and the stopper 25 to maintain a stable installation state without being separated from the housing 20. Both ends of the work coil 30 are connected to the power supply unit 90 (see FIG. 6) to receive high-frequency AC power. The work coil 30 wound on the housing 20 as described above has the same closed cross-sectional shape as the heating plate 10. Therefore, since all parts of the heating plate 10 are separated by the same distance from the work coil 30, a magnetic field of the same intensity acts on the heating plate 10, so that uniform and vigorous electromagnetic induction heating can be achieved in the entire heating plate 10. .

The cover mounting portion 24 is formed with a plurality of joining projections 26 at regular intervals on the outer circumferential surface for coupling with the cover 40, and a bolt hole is formed on each joining projection 26.

The cover 40 is formed in a shape corresponding to the cover mounting portion 24, and the same number of bonding projections 43 are formed on the outer circumferential surface at the same position as the cover mounting portion 24, and bolts are applied to each bonding projection 43. The ball is formed. Therefore, after the heating plate 10 is pre-inserted and installed, the cover 40 is fitted to the cover mounting portion 24 of the housing 20 and bolted to the two bonding protrusions 26 and 43 to cover the front opening of the housing 20. (40) can be mounted.

The inlet pipe 41 and the outlet pipe 42 are formed through the cover 40 and are formed in a circular pipe shape to facilitate connection of the hose. The discharge pipe 42 is formed at a higher position than the inlet pipe 41 so that air discharge inside the housing 20 is smoothly performed.

When the heating plate 10 is installed inside the housing 20, the heating water flows to both the inside and outside of the heating plate 10. That is, the heating water absorbs heat from the heating plate 10 by exchanging heat with all surfaces of the inside and outside of the heating plate 10.

The heating plate 10 is inserted into the housing 20 in a state combined with the distribution plate 50 and the baffle 60. The distribution plate 50 and the baffle 60 are made of non-ferrous metal or plastic.

3 and 4, the distribution plate 50 is a rectangular plate such as the top plate 11 and the bottom plate 12 of the heating plate 10 as a whole. The ridge 51 is protruded.

A baffle 60 is installed in the raised portion 51, and the baffle 60 is divided into a front baffle 61 and a rear baffle 62, respectively, and the distribution plate 50 from the front and rear of the distribution plate 50, respectively. Is put on. The longitudinal cross sections of the front baffle 61 and the rear baffle 62 are formed in a substantially de-shape shape so that they can be fitted to the distribution plate 50.

Before installation of the front baffle 61 and the rear baffle 62, the distribution plate 50 is first inserted into the heating plate 10. A plurality of protrusions 52 having the same height as the ridges 51 are formed on the upper and lower surfaces of the distribution plate 50. Therefore, when the distribution plate 50 is inserted into the heating plate 10, the inner circumferential surface of the heating plate 10 is supported by the ridges 51 and the protrusions 52, and the entire inner circumferential surface of the heating plate 10 is the distribution plate 50 Are spaced at the same distance from.

In the above state, the front baffle 61 and the rear baffle 62 are fitted to the front and rear of the ridge 51, respectively, in a state including the heating plate 10. At this time, the rear end of the rear baffle 62 is formed of a T-shaped gripping portion 62a to be fitted to the rear end upper plate 11 and the lower plate 12 of the heating plate 10, so that the heating plate 10 and the distribution plate 50 are Maintains a more stable bonding state.

The front portion of the baffle 60 (including the entire front baffle 61 and the front portion of the rear baffle 62), the engaging projections 63 are formed long in the front-rear direction, respectively, and corresponding coupling grooves ( 27) (see FIG. 2) is formed long in the front-rear direction at the center of the inner circumferential surface of the housing 20, up and down. Accordingly, when the assembly of the distribution plate 50, the heating plate 10, and the baffle 60 is inserted into the housing 20, the coupling protrusion 63 of the baffle 60 has a coupling groove 27 of the housing 20. It is inserted into and maintains its installation position firmly.

When the assembly of the distribution plate 50, the heating plate 10, and the baffle 60 is inserted into the interior of the housing 20, as shown in FIG. 4, the upper and lower inner surfaces of the baffle 60 are respectively upper and lower inner circumferential surfaces of the housing 20. It is in close contact with the inner space of the housing 20 to be partitioned on both sides based on the baffle 60. Therefore, the heating water inside the housing 20 cannot flow in the transverse direction across the baffle 60. However, since the rear flow path 23 at the rear of the housing 20 is not blocked by the baffle 60, the flow of heating water is possible.

In addition, as can be seen in Figure 4, the flow inside the housing 20 can be divided into an inner flow and an outer flow of the heating plate 10, each flow of the upper flow and lower flow and distribution of the heating plate 10 The plate 50 can be divided into an upper flow and a lower flow. (Each upper flow and lower flow are connected at the side, so they are not clearly distinguished, but can be roughly divided as above.)

1, 2, 5, and 6, a heat sink assembly 44 is formed on the cover 40, and a heat sink 70 is installed on the heat sink assembly 44. The heat sink assembly 44 is installed in the form of a circular tube at the center of the cover 40, and a female screw 44a is formed on the inner circumferential surface.

The heat sink 70 is an approximately cylindrical part in which a space for heating water inflow is formed, and the front is blocked and the rear coupled to the heat sink assembly 44 is open.

The heat sink 70 is formed with a male screw 71 that is fastened to the female screw 44a on the outer circumferential surface of the rear side, and is mounted on the heat sink assembly 44 by screwing.

The heat sink 70 is made of a non-ferrous metal (eg, aluminum) having excellent thermal conductivity, and the inner space is divided into left and right spaces by partitions 72. When the heat sink 70 is completely mounted on the heat sink assembly 44, the end of the partition 72 is in close contact with the front end of the baffle 60. Therefore, the spaces on both sides of the partition wall 72 inside the heat sink 70 are respectively connected to the connection space on the inlet pipe 41 side and the connection space on the discharge pipe 42 side of the housing 20, and in principle, heating water cannot be moved between them. Do. This is to form a main flow through the entire interior space of the housing 20 by allowing the heating water flowing into the housing 20 to flow through the rear flow passage 23.

However, a plurality of bypass passages 73 are formed in the partition wall 72 so as to allow some heating water to flow by communicating between the inner spaces on both sides. This is to allow the heat sink 70 to be more actively cooled by allowing the heating water not yet heated to pass through the heat sink 70.

A portion of the front and side surfaces of the heat sink 70 may be processed into a flat surface, and a heating element 80 among elements constituting the power supply unit 90 (see FIG. 6) may be mounted on the flat surface. An example of the heating element 80 is an IGBT (Insulated gate bipolar transistor) element, which forms a high-frequency alternating current used for electromagnetic induction heating by high-speed switching of direct current, and thus requires water cooling.

Since the bolt holes 81 are also formed in the heating elements 80, the heat generating elements 80 can be mounted on the heat sink 70 by fastening the bolts to the bolt holes 81,74.

The heating element 80 may be connected to the power supply unit 90 installed at another location using a wire, but as shown in FIG. 6, the power supply unit 90 to the heat sink 70 and the heat sink assembly 44 Can be directly installed, and the internal circuit board of the power supply unit 90 and the lead 82 of the heating element 80 can be directly connected. The fixing of the power supply unit 90 can be easily performed using a variety of known fastening means such as bolts, clamps, and the like.

The operation and effects of the present invention will now be described.

When the heater is operated, a high frequency AC current is supplied from the power supply unit 90 to the work coil 30. The magnetic field formed on the work coil 30 generates an eddy current by electromagnetic induction in the heating plate 10, and heat is generated in the heating plate 10 by the eddy current.

As shown in FIG. 7, the heating water flows into one space of the housing 20 through the inflow pipe 41 and flows through the rear flow path 23 to the other space of the housing 20, and then discharge pipe ( 42). The heating water is heated by absorbing heat from the heating plate 10 while moving the path. The heated heating water is supplied to a heater core (heating heat exchanger for heating) along a hose connected to the discharge pipe 42 to heat the air blown into the vehicle cabin, whereby warm air is supplied into the vehicle cabin to be heated.

In the induction heater for a vehicle according to the present invention, both the inlet pipe 41 and the outlet pipe 42 are formed in the cover 40 mounted on one side of the housing 20. Therefore, since the operation of connecting and disconnecting the hoses to the inlet pipe 41 and the outlet pipe 42 is easy, installation and maintenance work of the heater is facilitated.

In addition, a heat sink 70 is also installed on the cover 40, a heat generating element 80 is mounted on the heat sink 70, and a heat sink assembly portion 44 of the heat sink 70 or the cover 40 is installed. The power supply unit 90 may be installed. In this way, as well as the inlet pipe 41 and the outlet pipe 42, both the heat sink 70, the heating element 80, and the power supply unit 90 are installed on the same surface (front of the heater), so assemble and install the heater. It is possible to carry out maintenance work on the same one surface, thereby improving assembly and maintainability.

The flow path inside the housing 20 is divided along the front-rear direction of the housing 20 by the baffle 60 as described above. In addition, the flow paths on both sides of the baffle 60 are also divided into the inner flow path and the outer flow path of the heating plate 10 by the heating plate 10. In addition, the inner flow path of the heating plate 10 is divided into an upper flow path and a lower flow path by the distribution plate 50, and the outer flow path of the heating plate 10 is also divided into an upper flow path and a lower flow path by the heating plate 10. Since a sufficient amount of heating water is supplied from the inlet pipe 41 to the flow path, which has been divided in detail and has a reduced cross-sectional area, the flow is smoothly performed, so that the possibility of bubbles stagnating inside the housing 20 is greatly reduced. In addition, since the discharge pipe 42 is formed at a relatively high position compared to the inlet pipe 41, it is advantageous to discharge bubbles. Therefore, since the bubble layer is not formed inside the housing 20, the uncooled portion by the bubble layer does not exist, and thus, local overheating phenomenon does not occur, thereby preventing degradation and damage to heater efficiency due to local overheating. .

The heating plate 10 according to the present invention is supported by the raised portion 51 and the projection 52 of the distribution plate 50 to maintain a constant closed cross-sectional shape. Housing 20 is formed in a closed cross-sectional shape of the same shape as the heating plate 10, and the work coil 30 is wound on the outer circumferential surface of the housing 20, so that the work coil 30 and the heating plate 10 are Even at the same location, they are spaced at the same distance. That is, the entire portion of the heating plate 10 is located at a certain distance close to the work coil 30. Therefore, the magnetic field of the work coil 30 acts strongly and uniformly over the entire area of the heating plate 10 to improve heating efficiency.

The induction heater for automobiles according to the present invention maintains a closed cross-section compared to a conventional cylindrical heater, but the cross-section extends in both width directions and has a shape having straight portions (flat portions) such as an upper plate and a lower plate. Therefore, even in the same area, the length of the outer circumference of the heater is greatly increased. This has a direct effect on the heating coil 10 and the work coil 30 wound on the outer circumferential surface of the housing 20 to directly exchange heat with the heating water. That is, by having the shape as described above, the area of the heating plate 10 and the length of the work coil 30 are increased, thereby increasing the heating area and increasing the strength of the magnetic field, thereby increasing the heating performance. In addition, when this has the same heating performance, the heater can be configured to be smaller and more compact, so that the degree of freedom of layout is improved and the weight is reduced when installed in a vehicle.

On the other hand, in the inner space of the heat sink 70, the heating water is always filled like the housing 20, and thus the heat sink 70 has a temperature almost equal to that of the heating water. Therefore, when compared to the heating element 80 mounted on the heat sink 70, the temperature of the heat sink 70 is lower than that of the heating element 80 during the heater operation, that is, when heat is generated from the heating element 80, Remains intact. Due to the temperature difference, heat exchange between the heat sink 70 and the heating element 80 is performed, and heat of the heating element 80 is transferred to the heating water through the heat sink 70, so that the cooling of the heating element 80 is achieved. It is possible to prevent device degradation and damage due to overheating. Therefore, there is an advantage that the configuration of the heater is small and simple since it is not necessary to configure a separate cooling channel installed outside the heater for cooling the heating element 80. At this time, since the heat sink 70 and the heat generating element 80 are in surface contact with each other, a more smooth heat exchange is possible, so that the heat generating element 80 is cooled more effectively.

The partition wall 72 provided inside the heat sink 70 basically blocks heating water from directly moving from the space on the inlet pipe 41 side of the housing 20 to the space on the outlet pipe 42 side. Therefore, the heating water entering the inlet pipe 41 flows through the space in the inlet pipe 41 side and passes through a normal path flowing through the rear flow path 23 through the space on the outlet pipe 42 side, thereby contacting the heating water and the heating plate 10. The area and time are increased so that the heating water can be sufficiently heated.

The bypass passage 73 formed in the partition wall 72 allows partial movement of heating water from a space adjacent to the inlet pipe 41 to a space on the discharge pipe 42 side. Since the heating water in the space adjacent to the inlet pipe 41 moving through the bypass passage 73 does not have a long contact time with the heating plate 10, the temperature of the heat sink is lower than that of other spaces. ) Can exchange heat with lower temperature heating water, thereby improving the cooling performance of the heating element 80.

As described above, the present invention has been described with reference to the embodiment shown in the drawings, but this is only exemplary, and those skilled in the art to which the art pertains have various modifications and other equivalent embodiments You will understand that it is possible. Therefore, the true technical protection scope of the present invention should be defined by the claims below.

10: heating plate 20: housing
11,21: Upper plate 12,22: Lower plate
23: rear flow path 24: cover mounting portion
25: stopper 26: splicing projection
27: coupling groove 30: work coil
40: cover 41: inlet pipe
42: discharge pipe 43: joint projection
44: heat sink assembly 50: distribution plate
51: elevation 52: protrusion
60: baffle 61: front baffle
62: rear baffle 63: engaging projection
70: heat sink 72: bulkhead
73: bypass passage 80: heating element

Claims (15)

A heating plate 10 having a closed cross-sectional shape formed long in the width direction;
A housing 20 formed in the same cross-sectional shape as the heating plate 10 and having a heating plate 10 embedded therein;
A work coil 30 wound on an outer circumferential surface of the housing 20;
Inlet pipe 41 and outlet pipe 42 is formed, the cover 40 is mounted to the front opening of the housing 20
Including,
The heating plate 10 and the housing 20 each include a curved portion connecting the upper plates 11 and 21 and the lower plates 12 and 22, and the both sides of the upper plates 11 and 21 and the lower plates 12 and 22, respectively. Automotive induction heater, characterized in that.
delete The method according to claim 1,
The heating plate 10 is an induction heater for a vehicle, characterized in that spaced apart from the work coil 30 as a whole.
A heating plate 10 having a closed cross-sectional shape formed long in the width direction;
A housing 20 formed in the same cross-sectional shape as the heating plate 10 and having a heating plate 10 embedded therein;
A work coil 30 wound on an outer circumferential surface of the housing 20;
Inlet pipe 41 and outlet pipe 42 is formed, the cover 40 is mounted to the front opening of the housing 20
Including,
An induction heater for a vehicle, characterized in that a distribution plate 50 having a flat plate shape is inserted into the heating plate 10 so that the interior space of the heating plate 10 is divided into an upper space and a lower space.
The method according to claim 4,
On the upper and lower surfaces of the distribution plate 50, a ridge 51 that is in close contact with the heating plate 10 is formed, so that the interior space of the distribution plate 50 is the inlet pipe 41 side space and the discharge pipe 42 side space. Automotive induction heater, characterized in that the distinction. The method according to claim 5,
A baffle 60 that is in close contact with the housing 20 is provided on the upper and lower surfaces of the heating plate 10, so that the inner space of the housing 20 is divided into an inlet pipe 41 side space and an outlet pipe 42 side space. Automotive induction heater, characterized in that. The method according to claim 6,
The baffle 60 is an induction heater for a vehicle, characterized in that installed on the same line as the ridge 51. The method according to claim 7,
An induction heater for a vehicle, characterized in that a coupling protrusion (63) is formed on the baffle (60), and the coupling protrusion (63) is inserted into a coupling groove (27) formed on the inner circumferential surface of the housing (20). The method according to claim 6,
The rear end of the baffle 60 is formed in a T-shape, an induction heater for automobiles, characterized in that the upper end 11 and the lower end 12 of the heating plate 10 are fixed. A heating plate 10 having a closed cross-sectional shape formed long in the width direction;
A housing 20 formed in the same cross-sectional shape as the heating plate 10 and having a heating plate 10 embedded therein;
A work coil 30 wound on an outer circumferential surface of the housing 20;
Inlet pipe 41 and outlet pipe 42 is formed, the cover 40 is mounted to the front opening of the housing 20
Including,
An induction heater for automobiles, characterized in that a rear flow path part (23) is formed to flow heating water from the inlet pipe (41) side connection space to the outlet pipe (41) side connection space at the rear side of the housing (20).
The method according to claim 1,
A cover mounting portion 24 is protruded around the front opening of the housing 20, and a plurality of joining projections 26 and 43 are protruded on the outer circumferences of the cover mounting portion 24 and the cover 40, and both side joining projections (26,43) Induction heater for automobiles, characterized in that the bolts are fastened to each other. A heating plate 10 having a closed cross-sectional shape formed long in the width direction;
A housing 20 formed in the same cross-sectional shape as the heating plate 10 and having a heating plate 10 embedded therein;
A work coil 30 wound on an outer circumferential surface of the housing 20;
Inlet pipe 41 and outlet pipe 42 is formed, the cover 40 is mounted to the front opening of the housing 20
Including,
A heat sink assembly 44 is formed through the cover 40, the heat sink 70 is screwed into the heat sink assembly 44, and the inside of the housing 20 is inside the heat sink 70. Automotive induction heater, characterized in that the heating water is introduced.
The method according to claim 12,
An induction heater for a vehicle, characterized in that the heat sink (80) constituting the power supply unit (90) for supplying power to the work coil (30) is mounted in a surface contact state. The method according to claim 13,
The interior of the heat sink 70, the induction heater for automobiles, characterized in that provided with a partition wall (72) for blocking the heating water of the inlet pipe (41) side connection space to move directly to the outlet pipe (42) side connection space. The method according to claim 14,
An induction heater for automobiles, characterized in that a bypass passage (73) is formed through the partition wall (72).

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