KR20170017602A - Electric heater - Google Patents

Abstract

According to an embodiment of the present invention, an electrothermal heater device includes a PTC device therein, and at the same time when power is applied, heat generated in the PTC device is supplied to a plurality of A plurality of heat generating units for passing the heat radiating fins through; And a control unit including a circuit board on which a plurality of components for supplying power to the heat generating units and controlling the heat of the heat generating units are mounted, wherein the control unit includes: a cooling unit for cooling the plurality of components; A plurality of first moisture inflow blocking portions provided at upper and lower ends of the cooling portion to block moisture flowing into the control unit through the cooling portion; And a plurality of second moisture inflow blocking portions provided in the control unit to block moisture introduced into the control unit. In addition, various other embodiments are possible.

Description

ELECTRIC HEATER [0002]

Various embodiments of the present invention relate to an electric heater device used in automobiles.

In general, a positive temperature coefficient (PTC) device has a characteristic in which the electrical resistance increases rapidly at a Curie temperature or higher. As a result, when the voltage is applied, There is a magnetic temperature control function in which the constant temperature characteristic thermistor has a constant temperature.

In recent years, by using the above-mentioned functions, an application field has been broadened as a heating element, and an electrothermal heater device has been developed which joins heat radiating fins, which are metal plates, so as to dissipate heat generated by assembling a proper number of thermostats.

The heating hinge device is generally applied to a heating / cooling system of a car.

Such an electrothermal heater device using the PTC element is disposed in the vicinity of a normal heater core provided in the case of the air conditioner and directly heats the air, so that the temperature of the automobile interior can be raised from the initial drive of the automobile engine to the normal drive have.

The structure of the electrothermal heater device includes a plurality of radiating fins, a pair of frames surrounding the radiating fins and having positive and negative power terminals, a guide plate disposed between the radiating fins, and a plurality of PTC devices And a control unit for controlling the amount of heat of the PTC device.

The electrothermal heater apparatus includes a positive electrode and a negative electrode power supply terminal for supplying a current to the PTC device, a current is supplied to the PTC device through the positive electrode power supply terminal to perform a heat generating function, and a current flows through the negative electrode power supply terminal . At this time, the electrothermal heater device exerts a high capacity by controlling the operation of the PTC device. In order to control the operation of the PTC device, the control unit is mounted inside the electrothermal heater device, and an Insulated Gate Bipolar Transistor (IGBT) is mounted on the PCB substrate to control the operation of the PTC device. And the IGBT element is mounted on the positive and negative power supply terminal PTC elements, thereby controlling the supply of current from the positive and negative power supply terminals to the PTC element through the IGBT element.

However, since the conventional electrothermal heater apparatus exerts a large amount of heat through a high current, unnecessary heat is generated in the PTC element and the parts mounted on the PCB substrate for controlling the same (for example, IBGT element) The temperature of the internal space is increased, and the heat-generating heater device is damaged or malfunctioned due to such heat.

In order to solve such a problem, there is a demand for a cooling device which is coupled with each component mounted on a PCB substrate and discharges heat generated from the components to the outside.

Accordingly, the present invention provides a cooling unit for cooling and discharging heat in a control unit, thereby preventing the product from being damaged and malfunctioning by heat to thereby reduce the defective rate of the product and, at the same time, .

In addition, according to the present invention, by constituting a plurality of moisture inflow blocking portions for blocking moisture flowing into the control unit, it is possible to prevent short-circuiting and short-circuiting of parts provided in the product due to inflow of moisture of the product, The present invention is to provide an electric heater device capable of reducing the fixed incidence rate of the product and further improving the performance of the product.

According to various embodiments of the present invention, the heat transfer heater device includes: a plurality of heat generating units each having a PTC device therein, which transfers heat generated from the PTC device to a plurality of heat radiating fins at the same time when power is applied; And a control unit including a circuit board on which a plurality of components for supplying power to the heat generating units and controlling the heat of the heat generating units are mounted,

The control unit may include: a cooling unit cooling the plurality of components; A plurality of first moisture inflow blocking portions provided at upper and lower ends of the cooling portion to block moisture flowing into the control unit through the cooling portion; And a plurality of second moisture inflow blocking portions provided in the control unit to block moisture introduced into the control unit.

According to various embodiments of the present invention,

A cooling unit for cooling and discharging heat is provided in a control unit for controlling the heat of the product, thereby preventing damage and malfunction of the control unit due to heat, thereby lowering the defect rate of the product and improving the reliability of the product .

In addition, a plurality of moisture inflow blocking portions for blocking moisture introduced into the control unit can be configured to prevent short-circuiting and short-circuiting of parts provided in the product due to moisture inflow of the product, And the performance of the product can be further improved.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an exploded perspective view showing the configuration of an electrothermal heater device according to various embodiments of the present invention. Fig.
2 is an enlarged exploded perspective view of part A of Fig.
FIG. 3 is a perspective view showing a cooling section in the configuration of the electrothermal heater device according to various embodiments of the present invention. FIG.
FIG. 4 is a perspective view illustrating an assembled state of the electrothermal heater apparatus according to various embodiments of the present invention. FIG.
FIG. 5 is a side cross-sectional view illustrating a combined state of the electrothermal heater apparatus according to various embodiments of the present invention. FIG.
FIG. 6 is an enlarged side sectional view showing a combined state of the electrothermal heater apparatus according to various embodiments of the present invention. FIG.
FIG. 7 is a cut-away perspective view illustrating a combined state of the electrothermal heater apparatus according to various embodiments of the present invention. FIG.
FIG. 8 is an enlarged perspective view illustrating a combined state of the electrothermal heater apparatus according to various embodiments of the present invention. FIG.
FIG. 9 is a cut-away side cross-sectional view showing a combined state of the electrothermal heater apparatus according to various embodiments of the present invention. FIG.
10 is an enlarged side cross-sectional view showing a combined state of the electrothermal heater apparatus according to various embodiments of the present invention.
11 is a perspective view showing a state before the heat generating portion of the electrothermal heater device according to various embodiments of the present invention is assembled.
FIG. 12 is a side view showing a heat generating portion of a structure of an electrothermal heater device according to various embodiments of the present invention. FIG.
13 is a sectional view taken along line AA 'in Fig.
Fig. 14 is an enlarged cross-sectional view of part B of Fig.
15 is a perspective view showing an ending holder portion in the structure of the electrothermal heater device according to various embodiments of the present invention.
16 is a side view showing a state before coupling of the tube portion and the ending holder portion in the structure of the electrothermal heater device according to various embodiments of the present invention.
17 is a cross-sectional side view showing a state of engagement of the tube portion and the ending holder portion in the structure of the electrothermal heater device according to various embodiments of the present invention.

The terms used in various embodiments of the present invention will be briefly described and various embodiments of the present invention will be described in detail.

Although the terms used in various embodiments of the present invention have been chosen to take into account the functionality in the various embodiments of the present invention, it is to be understood that they are not intended to limit the scope of the present invention to the general intentions or the precedents of those skilled in the art, And the like. Also, in certain cases, some terms are arbitrarily selected by the applicant, and the meaning thereof will be described in detail in the description of the various embodiments of the present invention. Therefore, the terms used in various embodiments of the present invention should not be construed to be mere terms, but rather should be defined based on the meaning of the terms and throughout the various embodiments of the present invention.

Also, terms including ordinal numbers such as first, second, etc. may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component.

Here, the heat transfer heater device 10 (shown in FIG. 1) according to various embodiments of the present invention will be described. First, an application example of the electric heating device 10 (shown in FIG. 1) according to an embodiment of the present invention includes all devices that apply a cooling and heating system, a car, a refrigerator, an air conditioner, A washing machine, an air purifier and an exothermic heater. Further, it is apparent to those skilled in the art that the electrothermal heater apparatus according to various embodiments of the present invention is not limited to the above-described apparatuses.

Hereinafter, the heat transfer heater device 10 according to various embodiments of the present invention will be described in detail

1 is an exploded perspective view showing a configuration of an electro-thermal heater 10 according to various embodiments of the present invention, and FIG. 2 is an enlarged exploded perspective view of part A of FIG. 1.

1 and 2, the electrically conductive heater device 10 may include a plurality of heat generating units 20 and a control unit 30.

The heat generating unit 20 includes a PTC device 21a. The heat generating unit 20 applies power to the PTC device 21a to generate heat, (26) and (27).

The control unit 30 may be provided at one end of the heat generating unit 20 to supply power to the PTC device 21a and control the heat of the heat generating units 20. [

The control unit 30 may be provided with circuit boards 38 on which a plurality of components 38a are mounted to control the heat of the heat generating units 20. [

The PTC device 21a generates heat and the generated heat is transferred to the first and second heat dissipation fins 26 and 27. The heat generated by the first and second heat dissipation fins 26 and 27 When it passes through the radiating fins 26 and 27, it becomes the heater of the warm air. In addition, the amount of heat of the electrically conductive heater device 10 can be controlled according to the temperature or environment of use, and a PWM (Pulse Width Modulation) control method is generally applied.

Here, the PWM (Pulse Width Modulation) control scheme is an efficient switch control scheme. That is, the PWM (Pulse Width Modulation) control method means that the duty cycle of the pulse width changes according to the magnitude of the input signal (DC level) and the period is constant. Since the current is flowing to this motor while the output transistor is ON, in the case of a DC motor or the like, speed control can be simplified simply by connecting a motor to the collector side and changing the level of the input signal. In addition, since the transistors are only repeatedly performing ON / OFF (saturated) switching, operation without waste of power consumption can be realized except for the switching loss.

The control unit 30 may include a cooling unit 32 and a plurality of first and second moisture inflow blocking units 33 and 34. The cooling unit 32 faces the parts 38a of the circuit board 38 and simultaneously releases heat generated from the components 38a to cool the inside of the control unit 30. [ .

The first moisture inflow blocking portion 33 may be provided at the upper end and the lower end of the cooling unit 32 to block moisture flowing into the control unit 30 through the cooling unit 32 .

The second moisture inflow blocking portion 34 is provided in the control unit 30 so as to block moisture flowing into the control unit 30. [

As described above, the cooling unit 32 for cooling the control unit 30 and the plurality of first and second moisture inflow blocking units 33 and 34 for blocking the inflow of water into the control unit 30, It is possible to prevent the parts 38a provided in the control unit 30 from being damaged or damaged by heat as well as to prevent the malfunction, leakage, short-circuit and short-circuit of the parts 38a due to inflow of water have.

The control unit 30 will be described in more detail as follows.

FIG. 3 is a perspective view showing a cooling part 32 in the structure of the electrothermal heater device 10 according to various embodiments of the present invention, and FIG. 4 is a perspective view showing the assembled state of the electrothermal heater device 10 according to various embodiments of the present invention FIG. 5 is a side cross-sectional view showing a combined state of the electrothermal heater apparatus 10 according to various embodiments of the present invention, and FIG. 6 is a perspective view showing a combination of the electrothermal heater apparatus 10 according to various embodiments of the present invention Fig.

1, the control unit 30 includes a housing main body 31, a cooling unit 32, a plurality of first and second moisture inflow blocking units 33 and 34, A ground cover 36, a ground cover portion 37, a circuit board 38, a housing cap 39, and a power connection connector portion 31b.

A plurality of openings 31a are formed in the bottom surface of the housing main body portion 31 to penetrate the power supply terminals 22a and 23a of the heat generating portion 20 so as to be electrically connected to a ground portion 36 have.

3, the cooling part side surface 32a faces the parts 38a of the circuit board 38 and at the same time transfers the heat of the parts 38a to the cooling part 32, The lower surface 32b is integrally formed with the cooling portion side surface 32a and is coupled to the opening 31a of the housing main body portion 31. The heat transmitted from the side surface is transmitted to the outside of the control unit 30 And a plurality of terminal through holes 40 may be formed to allow external cold air to flow into the control unit 30. [

As shown in FIGS. 5 and 6, the first moisture inflow blocking portion 33 may be configured to block the moisture flowing into the control unit 30 through the cooling unit 32, And is in close contact with the upper and lower portions. The second moisture inflow blocking portion 34 may be provided in the openings 31a to block moisture flowing through the opening 31a of the housing main body 31. [ 1, the first moisture inflow blocking portion 33 may be formed of silicone packing, and the second moisture inflow blocking portion 34 may be formed of an o-ring (not shown) so as to conform to the shape of the opening of the opening 31a. O-rings). In the present embodiment, the first and second moisture inflow blocking portions 33 and 34 are exemplified by a silicon packing and an O-ring. However, the present invention is not limited thereto, The two moisture inflow blocking portions 33 and 34 can be variously applied as long as they have other structures for blocking moisture inflow into the control unit 30 other than the silicon packing and the O-ring.

1 and 2, the cap portion 35 may be coupled to the second moisture inflow blocking portion 34 to protect the second moisture inflow blocking portion 34. As shown in FIGS. The ground portion 36 is electrically connected to the power terminals 22a and 23a of the cap portion 35 so as to be electrically connected to the power terminals 22a and 23a to apply power to the power terminals 22a and 23a of the heating portion 20. [ As shown in FIG. The ground cover portion 37 is coupled to the ground portion 36 to protect the ground portion 36. The circuit board 38 is provided at an upper portion of the ground cover portion 37 so that a plurality of components 38a are mounted. The housing cap 39 includes a cooling part 32, first and second moisture inflow blocking parts 33 and 34, a cap part 35, a ground part 36, The cover portion 37 and the plurality of components 38a are coupled to the upper portion of the housing main body portion 31 to protect the mounted circuit board 38. [

As shown in FIG. 4, the power connector 31b is electrically connected to an external device (not shown), and the power of the external device is applied to the ground 36. The plurality of components 38a may be formed of IGBT elements 90. [ The circuit board 38 may be provided with other components 38a in addition to the IGBT element 90.

The IGBT (Insulated Gate Bipolar Transistor) device is a high-power switching semiconductor which can quickly perform a switching function for blocking or passing an electric current. Therefore, when the switching function is performed, the IGBT element 90 generates a high temperature, and the generated high temperature can be quickly cooled by the cooling unit 32.

That is, the terminal through hole 40 formed in the lower surface 32b of the cooling part flows the external cold air to cool the IGBT element 90 facing the cooling part side surface 32a, 40 receives the heat generated from the IGBT element 90 through the cooling unit 32 and discharges the heat to the outside.

In other words, the cooling part side surface 32a faces the IGBT element 90 and at the same time transfers the heat generated from the IGBT element 90 to the cooling part lower surface 32b, and the cooling part lower surface 32b And is formed integrally with the cooling part side surface 32a, so that the generated heat is transferred to the outside.

As shown in FIGS. 5 and 6, the cooling unit 32 may be formed of a heat sink having an L shape. In this embodiment, the cooling section 32 may be formed in a shape other than a heat sink of an "L " shape. For example, the shape of the cooling part 32 may be any one of a "C" shape, a "T" shape, an "I" shape and a "J" shape. In addition, the terminal through-hole 40 may transmit the heat transferred to the cooling unit 32 to the heat generating unit 20 to be used as a heater.

Further, the heat generating unit 20 will be described in more detail as follows.

11 is a perspective view showing a state before the heat generating portion 20 is assembled in the structure of the electrically conductive heater device 10 according to various embodiments of the present invention. 12 is a side view showing a heat generating part 20 of the electrothermal heater device 10 according to various embodiments of the present invention, FIG. 13 is a sectional view taken along line AA 'of FIG. 12, B is an enlarged cross-sectional view.

1, 11, and 12, the heat generating unit 20 includes a PTC guide unit 21, first and second terminal plates 22 and 23, an insulator 24, (25), and first and second heat dissipation fins (26) and (27).

The PTC guide unit 21 may include a plurality of PTC devices 21a and may be provided between the insulators 24 to be described later so as to fix the position of the PTC devices 21a.

The first and second terminal plates 22 and 23 may be assembled on both sides of the PTC guide 21 so as to surround the outer surfaces of the PTC devices 21a. The power terminals 22a and 23a may be provided at one end of the control unit 30 so as to be electrically connected to the ground unit 36 of the control unit 30. [

The insulator 24 is connected to the first and second terminal plates 22 and 23 for insulation between the first and second terminal plates 22 and 23 and the first and second radiating fins 26 and 27, As shown in FIG.

The tube portion 25 covers the outer surfaces of the assembled PTC guide portion 21, the first and second terminal plates 22 and 23, and the insulator 24.

The first and second radiating fins 26 and 27 are symmetrically disposed on both sides of the tube 25 so as to discharge the heat of the PTC element 21a to the outside.

Also, as shown in Figs. 13 and 14, the first and second terminal plates 22 and 23 may have a " C "shape. That is, both ends of the first and second terminal plates 22 and 23 are formed with insertion protrusions 22b and 23b so as to be coupled to the insertion groove 21b formed in the PTC guide portion 21 .

Therefore, the first and second terminal plates 22 and 23 may be covered with both sides of the PTC element 21a.

The tube portion 25 may be an aluminum tube portion 25.

One end of the tube portion 25 may be provided with a tube cap 80 to prevent water infiltration into the tube portion 25. [

15 to 17, a coupling portion 81 is formed on one side of the tube cap 80 to be coupled to the tube portion 25, and the end surface of the ending holder portion The engaging groove 82 is formed so as to engage with the engaging rib 71 formed in the engaging recess 70.

The coupling groove 82 may be formed as a '+' -shaped coupling groove to firmly engage with the coupling rib 71 (shown in FIG. 15). The coupling groove 82 may have a shape other than a '+' shape. For example, the coupling groove 82 may have an 'X' shape or the like.

The tube portion 25 is assembled in a state where the first and second terminal plates 22 and 23 and the insulator 24 are assembled to the PTC guide portion 21, And the coupling portion 81 formed on one surface of the tube cap 80 is inserted and assembled.

As shown in FIGS. 16 and 17, at least one sealing protrusion 81a is formed on the outer surface of the coupling portion 81 so as to engage with the tube portion 25 and to maintain airtightness The coupling part 81 of the tube cap 80 is deflected to the lower end of the tube part 25 by being forcedly inserted into the groove formed in the tube part 25, The tube cap 80 and the tube portion 25 are kept airtight to each other.

When the tube portion 25 assembled as described above is pressed with a certain pressure force, the tube portion 25, the insulator 24, the first and second terminal plates 22 and 23, and the PTC element 21a ) Are brought into close contact with each other at a constant pressure to form a stable conduction path.

The first and second radiating fins 26 and 27 are attached to both end surfaces of the tube portion 25 with an adhesive while the tube portion 25 is pressed under a constant pressure.

In this state, the tube portion 25 is firmly assembled to the ending holder portion 70. That is, the coupling groove 82 of the tube cap 80 coupled to the lower end of the tube portion 25 is coupled to the coupling rib 71 of the ending holder portion 70, The first and second side frames 50 and 60 are coupled to both sides of the first and second side frames 50 and 60, respectively.

That is, the first and second side frames 50 and 60 are hooked to the ending holder 70. The first and second side frames 50 and 60 may be provided on the side surface of the heat generating unit 20 to protect the heat generating unit 20. The bottom surface of the heat generating part 20 may be provided with an ending holder part 70 to be engaged with a lower surface of the heat generating part 20 and to be engaged with one surface of the first and second side frames 50 and 60 .

When the power is supplied through the power terminals 22a and 23a, the heat generator 20 generates heat in the PTC device 21a, and the generated heat is supplied through the aluminum tube 25 The heat is transferred to the first and second radiating fins 26 and 27 and is discharged to the outside.

1, the electrothermal heater apparatus 10 includes a plurality of heat generating units 20, and a plurality of heat generating units 20, And a control device unit 30. The control device unit 30 includes a housing main body 31 having a plurality of openings 31a, a cooling unit 32, a plurality of first and second moisture inflow- A cap portion 35, a ground portion 36, a ground cover portion 37, a circuit board 38, a housing cap 39 and a power connection connector portion 31b.

1, first, the second moisture inflow blocking portion 34 is coupled to the openings 31a of the housing main body portion 31, and the terminals 31a of the cooling portion 32 are inserted into the openings 31a. And the through hole (40) faces. At this time, a first moisture inflow blocking portion 33 is provided at the upper and lower ends of the cooling portion 32, respectively. The cooling portion side surface 32a faces the side surface of the housing main body portion 31 and the cooling portion lower surface 32b is formed by the terminal through hole 40 formed in the cooling portion lower surface 32b and the opening portion 31a, Lt; / RTI >

The cap portion 35 is coupled to the upper portion of the cooling portion 32 and the cap portion 35 is coupled to the second moisture inflow portion 34. A ground portion 36 is provided on the upper portion of the cap portion 35 and a ground cover portion 37 is coupled to the upper portion of the ground portion 36. A circuit board 38 on which a plurality of components 38a are mounted is disposed on the ground cover portion 37. [ At this time, the IGBT element 90 provided on the circuit board 38 faces the cooling unit side surface 32a. In this state, the housing cap 39 is coupled to the upper portion of the housing main body portion 31.

When the control unit 30 is assembled, the heat generating unit 20 is assembled as shown in FIG. The heat generating portion 20 includes a PTC guide portion 21 having a plurality of PTC elements 21a, first and second terminal plates 22 and 23 having power terminals 22a and 23a, an insulator 24 A tube portion 25, and first and second radiating fins 26,

The first and second terminal plates 22 and 23 are assembled on both sides of the PTC guide unit 21 and the insulators 24 are assembled on both sides of the first and second terminal plates 22 and 23. The outer surface of the assembled PTC guide portion 21, the first and second terminal plates 22 and 23 and the insulator 24 is covered with the tube portion 25. The first and second radiating fins 26 and 27 are disposed symmetrically on both sides of the tube 25.

A tube cap (80) is coupled to the lower surface of the tube portion (25). At this time, an engaging portion 81 protruding from the upper surface of the tube cap 80 is engaged with the groove formed in the lower surface of the tube portion 25.

In this state, the coupling groove 82 formed in the tube cap 80 is firmly coupled to the coupling rib 71 of the ending holder portion 70. That is, the first and second side frames 50 and 60 are coupled to both sides of the heat generating unit 20 and the first and second side frames 50 and 60 are coupled to the lower surface of the heat generating unit 20, And the ending holder portion 70 are hooked.

In this state, the power terminals 22a and 23a formed on the first and second terminal plates 22 and 23 are connected to the opening 31a of the control unit 30, 30 are electrically connected to a ground portion 36 provided on the first and second electrodes.

7 and 8, when the heating unit 20 is assembled to the control unit 30, the assembling of the electrothermal heater apparatus 10 is completed. (Not shown) is electrically connected to the power connection connector portion 31b of the control unit 30 and the power of the external device is transmitted to the power connection connector portion 31b, (30).

The control unit 30 transmits power to the power terminals 22a and 23a of the first and second terminal plates 22 and 23 and the power terminals 22a and 23a are connected to the PTC guide unit 23a, And supplies power to the PTC devices 21a provided in the main body 21.

The PTC elements 21a rise to a predetermined temperature and generate heat, and the generated heat is transferred to the first and second radiating fins 26 and 27. The heat passes through the first and second radiating fins (26) and (27) and is converted into hot air and discharged to the outside. At this time, the control unit 30 controls hot air according to the ambient temperature or the use environment.

That is, the first and second radiating fins 26 and 27 directly heat the air in the vicinity of the heater core disposed in the case (not shown) of the air conditioner, which is an automobile cooling / heating system. At the same time, the heated air can raise the temperature of the automobile interior from the initial driving of the automobile engine to the normal driving.

5 and 6, when the IGBT element 90 provided in the controller unit 30 generates heat, the side surface of the cooling unit faces the IGBT element 90. Therefore, The heat of the IGBT element 90 is transmitted to the cooling part side surface 32a and the heat transferred to the cooling part side surface 32a is transmitted to the lower surface of the cooling part. The lower surface (32b) of the cooling part that receives the heat discharges the heat to the outside through the terminal through hole (40). In addition, the terminal through-hole 40 introduces cool external air to the cooling side surface 32a and cools the heat. At this time, the cooling side surface 32a cools the IGBT element 90 .

Here, the terminal through hole 40 may be used as a heater while the heat of the IGBT element 90 is discharged to the outside.

9 and 10, the opening portions 31a of the control unit 30 are provided with the second moisture inflow blocking portions 34 for preventing infiltration of moisture. Therefore, And the incoming moisture is all blocked by the second moisture inflow blocking portion 34. [

In addition, the upper and lower ends of the cooling part lower surface 32b are provided with a first moisture inflow preventing part 33 to block inflow of water flowing into the control unit 30 through the terminal through-hole 40 Therefore, the first moisture inflow / outflow blocking portion 33 can block the water flowing through the terminal through-hole 40.

As described above, in the conventional electric heater apparatus (not shown), unnecessary heat is generated in the PTC element and the parts 38a (for example, IBGT element) mounted on the PCB substrate for controlling the PTC element, There is a disadvantage in that the electric heating heater device is damaged or malfunctions due to such heat, and the leakage of water into the electric heater device causes a short circuit or short circuit of the component 38a and an increase in the fixed generation rate of the product there was.

Therefore, in order to overcome this disadvantage, in the present embodiment, by constituting the cooling unit 32 (shown in Fig. 1) which radiates heat to cool the control unit 30 (shown in Fig. 1) 30 constituting the first and second moisture inflow preventing portions 33, 34 for preventing damages and malfunctions due to heat and for blocking the water flowing into the control unit 30, It is possible not only to prevent short-circuiting and short-circuiting of the parts 38a provided in the product due to the inflow, but also to reduce the fixed incidence of the product and further improve the performance of the product. Therefore, the defective rate of the product is further reduced, and the reliability of the product can be further improved.

Although the present invention has been fully described by way of example with reference to the accompanying drawings, it is to be understood that the invention is not limited thereto and that various changes, substitutions and alterations can be made hereto without departing from the spirit and scope of the invention. It will be clear to those who have.

Heating unit: 20 Control unit: 30
Housing body part: 31 Cooling part: 32
First and second moisture inflow blocking portions: 33, 34 Cap portion: 35
Ground section: 36 Ground cover section: 37
Circuit board: 38 Housing cap: 39
Power connection connector part: 31b
PTC device: 21a PTC guide part: 21
Power supply terminals: 22a, 23a First and second terminal plates: 22, 23
Insulator: 24 Tube: 25
First and second radiating fins: 26, 27 First and second side frames: 50, 60
Ending holder part: 70 Tube cap: 80
Coupling portion: 81 Coupling groove: 82
Confidential protrusion: 81a

Claims (10)

In the electrically heated heater device,
A plurality of heat generating units having a PTC element therein and transmitting the heat generated from the PTC element to a plurality of radiating fins at the same time when power is applied; And
And a control unit including a circuit board on which a plurality of components for supplying power to the heat generating units and controlling the heat of the heat generating units are mounted,
The control unit,
A cooling unit for cooling the plurality of parts;
A plurality of first moisture inflow blocking portions provided at upper and lower ends of the cooling portion to block moisture flowing into the control unit through the cooling portion; And
And a plurality of second moisture inflow blocking portions provided in the control unit to block moisture flowing into the control unit.
[2] The apparatus of claim 1, wherein the control unit comprises: a housing main body having a plurality of openings (31a) penetrating the power terminal of the heat generating unit;
And a bottom surface formed integrally with the side surface is coupled to the openings 31a, and the heat is transmitted to the outside of the housing main body. A cooling unit having a plurality of terminal through-holes for discharging the air to outside or introducing outside air;
A plurality of first moisture inflow blocking portions provided at upper and lower ends of the cooling portion;
A plurality of second moisture inflow blocking portions provided in the openings 31a to block moisture flowing through the openings 31a;
A cap portion coupled to the second moisture inflow blocking portion;
A ground unit provided on the cap unit and electrically connected to a power supply terminal of the heating unit;
A ground cover portion coupled to the nose portion;
A circuit board on which a plurality of components mounted on the ground cover are mounted;
A housing cap coupled to an upper portion of the housing main body; And
And a power connection connector provided on a side surface of the housing main body.
[3] The apparatus of claim 2, wherein the cooling unit includes: a cooling unit facing the IGBT element provided on the circuit board and transferring heat generated from the IGBT element to the bottom surface of the cooling unit;
And a cooling unit integrally connected to a side surface of the cooling unit and having a terminal through hole for receiving the generated heat and discharging the generated heat to the outside or introducing outside air.
The electro-thermal heater apparatus according to claim 1, wherein the cooling section is formed of a heat sink having an L shape.
3. The electrothermal heater according to claim 2, wherein the terminal through-hole transfers the heat transferred to the cooling unit to the heat-generating unit and is used as a heater.
The apparatus as claimed in claim 2,
A PTC guide part having a plurality of PTC elements and fixing a position thereof;
A first and a second terminal plate assembled on both sides of the PTC guide part and having a power terminal at one end and surrounding an outer surface of the PTC devices;
An insulator assembled on both sides of the first and second terminal plates;
A tube portion covering the outer surface of the assembled PTC guide portion, the first and second terminal plates, and the insulator; And
And first and second radiating fins disposed symmetrically on both sides of the tube portion,
Wherein the first and second terminal plates are formed in a " C " shape.
[7] The apparatus of claim 6, further comprising a tube cap at one end of the tube to prevent moisture from penetrating into the tube.
[8] The apparatus of claim 7, wherein the tube cap is formed at one surface thereof with a coupling portion to be coupled with the tube portion
Wherein an engaging groove is formed on a tile surface of the tube cap to engage with an engaging rib formed in the ending holder portion.
9. The electrothermal heater according to claim 8, wherein at least one sealing protrusion is formed on an outer surface of the coupling portion so as to be coupled with the tube portion and to maintain airtightness.
9. The electrothermal heater according to claim 8, wherein the coupling groove comprises a coupling groove having a " + " shape so as to firmly engage with the coupling rib.

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