Heating apparatus for vehicle

Abstract

The present invention relates to a heating apparatus for a vehicle, comprising: a heating element having ventilation holes formed through both surfaces thereof in the flow direction of air; a first heat dissipation plate which is stacked on one surface of the heating element, has a plurality of first through-holes formed through both surfaces thereof in the flow direction of air, and to which positive power is applied; and a second heat dissipation plate which is stacked on the other surface of the heating element, has a plurality of second through-holes formed through both surfaces thereof in the flow direction of air, and to which negative power is applied, wherein the ventilation holes of the heating element are aligned to be in communication with the first through-holes and the second through-holes.

Description

Vehicle heating device

[0001] The present invention relates to a vehicle heating device capable of directly heating air blown into the interior of a vehicle by exchanging heat as air passes through a through hole formed in a heat dissipation part coupled to a heating part.

[0002]

[0003] In a vehicle heating system, the heating means responsible for heating the vehicle's interior is designed to heat the vehicle's interior by circulating coolant, which is used to cool the engine, through a heater core to heat the air.

[0004] However, among engines, diesel engines have a high heat exchange rate, so it takes longer than with gasoline engines for the heat exchange medium cooling the engine to heat up during the initial start of a vehicle. Therefore, in winter, vehicles equipped with diesel engines have a problem where the heating of the heat exchange medium is delayed after the initial start, resulting in reduced initial interior heating performance.

[0005] In order to solve the problems described above, an air-heating heater has been proposed that directly heats the air blown into the room using various means.

[0006] Although the above-mentioned air-heating heater has the advantage of enhancing heating performance by directly heating the air, it may hinder miniaturization by occupying space equivalent to the size of the heater, especially in situations where it is difficult to secure sufficient space inside the engine compartment due to the trend toward miniaturization and high efficiency.

[0007] In particular, in the case of cartridge heaters using nichrome wire, it is difficult to control the temperature, and there is a risk of overheating if air is not blown toward the heater, and there are problems such as insulation issues due to high voltage and a risk of fire.

[0008] FIGS. 1 to 3 are perspective views showing a conventional vehicle heater.

[0009] As described above, a vehicle heater utilizing a PTC (Positive Temperature Coefficient) element is disclosed in the prior art, and the prior art vehicle heater comprises: a first heat dissipation plate (10) which is in the form of a plate positioned perpendicular to the direction of air flow and includes a first air flow region formed with a plurality of first hollow portions (11) in which a certain area is hollow; a heating element (20) which is coupled to the first heating area of ​​the first heat dissipation plate (10) and generates heat; a second heat dissipation plate (30) which is in the form of a plate positioned perpendicular to the direction of air flow and includes a second air flow region formed with a plurality of second hollow portions (21) in which a certain area is hollow; and a housing (40) coupled to one end of the first heat dissipation plate (10) and the heating element (20). And the heating unit (20) may be configured to include a heating element (21) that generates heat, a terminal (22) laminated on one side of the heating element (21), an insulating film (23) laminated on one side of the terminal (22), a guide (24) disposed on both sides in the width direction of the heating element and the terminal, and a tube (25) in which the heating element, the terminal, the insulating film, and the guide are inserted and accommodated. For example, the heating element may be a PTC element.

[0010] However, conventional automotive heaters utilizing such PTC elements have the disadvantage that the placement of the heating element is limited, making it difficult to ensure uniform temperature distribution. Furthermore, since there are no ventilation holes for air to pass through the heating element, air resistance occurs, and heat dissipation is difficult in the center of the heating element. Additionally, as heat is conducted from the heating element to the heat sink through terminals, insulating films, tubes, and thermal grease for heat conduction, there is a disadvantage of poor heat conduction and heat loss.

[0011] [Prior Art Literature]

[0012] [Patent Literature]

[0013] KR 10-2013-0098787 A (2013.09.05.) "Vehicle Heater"

[0014]

[0015] The present invention has been devised to solve the problems described above, and the objective of the present invention is to provide a vehicle heating device that allows for the free arrangement of heating elements, thereby reducing heat loss and ensuring uniformity of temperature distribution.

[0016] In addition, the invention provides a vehicle heating device that reduces air resistance in the heating element, enables efficient heat dissipation from the heating element, and minimizes the heat transfer medium between the heating element and the heat sink.

[0017]

[0018] A vehicle heating device of the present invention for achieving the above-mentioned purpose comprises: a heating element having ventilation holes formed on both sides penetrating in the direction of air flow; a first heat dissipation plate laminated on one side of the heating element and having a plurality of first through holes formed on both sides penetrating in the direction of air flow, to which a positive power source is applied; and a second heat dissipation plate laminated on the other side of the heating element and having a plurality of second through holes formed on both sides penetrating in the direction of air flow, to which a negative power source is applied; wherein the ventilation holes of the heating element may be arranged to communicate with the first through holes and the second through holes.

[0019] Additionally, a bridge crossing the first through hole may be formed in the first heat sink at a position corresponding to the ventilation hole of the heating element, and a second bridge crossing the second through hole may be formed in the second heat sink at a position corresponding to the ventilation hole of the heating element.

[0020] In addition, the first heat sink and the second heat sink each have a mounting portion formed therein where the heating element is in surface contact, and the mounting portion may be formed in a shape corresponding to the heating element.

[0021] In addition, at least one of the first heat sink and the second heat sink may have a mounting portion formed protruding toward the heating element.

[0022] In addition, the first heat sink, the second heat sink, and the heating element are inserted inside, and the frame may further include the first heat sink positioned on one side and the second heat sink positioned on the other side.

[0023] Additionally, the frame may include: a body that surrounds the outer perimeter of the first heat sink and the second heat sink; a first insertion part that extends inward from one end of the body to support the first heat sink; and a second insertion part that is concavely formed at the other end of the body to support the second heat sink.

[0024] Additionally, the frame may further include a cover that blocks one side of the body and has a plurality of communication holes formed therein corresponding to a plurality of first through holes of the first heat sink.

[0025] In addition, the heating element may be a PTC element.

[0026] In addition, electrically conductive thermal grease may be interposed between the heating element and the first heat sink and between the heating element and the second heat sink, respectively.

[0027] In addition, an electrically insulating coating layer may be formed on one side of the first heat sink.

[0028] In addition, the heating elements are provided in plurality and arranged spaced apart in the height and length directions, and the plurality of heating elements may be arranged aligned in the height and length directions.

[0029] In addition, the heating elements are provided in plurality and arranged spaced apart in the height and length directions, and the plurality of heating elements may be arranged offset in the height and length directions.

[0030] In addition, the plurality of heating elements may be arranged so that some areas overlap in the height direction or length direction.

[0031]

[0032] The vehicle heating device of the present invention has the advantage of allowing the free arrangement of heating elements, thereby reducing heat loss and ensuring uniformity of temperature distribution.

[0033] In addition, the reduced air resistance in the heating element enables efficient heat dissipation, and the minimized heat transfer medium between the heating element and the heat sink has the advantage of improved heat dissipation performance.

[0034]

[0035] FIGS. 1 to 3 are perspective views showing a conventional vehicle heater.

[0036] FIGS. 4 to 6 are an assembled perspective view, an exploded perspective view, and a front view showing a vehicle heating device according to a first embodiment of the present invention.

[0037] FIG. 7 is a cross-sectional view taken in the height direction of a vehicle heating device according to the first embodiment of the present invention.

[0038] FIG. 8 is a partial cross-sectional view in the longitudinal direction of a vehicle heating device according to the first embodiment of the present invention.

[0039] FIG. 9 is a partial perspective view showing a second heat sink of a vehicle heating device according to the first embodiment of the present invention.

[0040] FIGS. 10 and FIGS. 11 are an exploded perspective view and a cross-sectional view cut in the height direction showing a vehicle heating device according to a second embodiment of the present invention.

[0041] FIGS. 12 and FIGS. 13 are front views showing an example of the shape and arrangement of a heating element in a vehicle heating device according to the present invention.

[0042]

[0043] Hereinafter, a vehicle heating device of the present invention having the configuration as described above will be explained in detail with reference to the attached drawings.

[0044] <Example 1>

[0045] FIGS. 4 to 6 are an assembled perspective view, an exploded perspective view, and a front view showing a vehicle heating device according to a first embodiment of the present invention.

[0046] As described above, a vehicle heating device according to one embodiment of the present invention may be configured to include a first heat dissipation plate (100), a second heat dissipation plate (200), and a heating element (300).

[0047] A plurality of first through holes (110) that penetrate both sides in the width direction, which is the direction of air flow, may be formed in the first heat sink (100). For example, the plurality of first through holes (110) may be arranged in the length direction and height direction, and may also be formed in various other shapes and arrangements. In addition, a first mounting portion (130) in which a heating element (300) is in surface contact may be formed in the first heat sink (100), and the first mounting portion (130) may be formed in a shape corresponding to the shape of the heating element (300). The first mounting portion (130) may be formed in multiple numbers, and the plurality of first mounting portions (130) may be arranged spaced apart in the height direction and length direction. In addition, a positive power source with a relatively high voltage may be applied to the first heat sink (100), and an electrode tab for connecting a power line may be formed in the first heat sink (100). Additionally, the first heat sink (100) may be formed in a divided form of three sheets, and the first heat sink (100) may also be formed as a single sheet.

[0048] A plurality of second through holes (210) penetrating both sides in the width direction may be formed in the second heat sink (200). For example, the plurality of second through holes (210) may be arranged in the length direction and height direction, and may also be formed in various other shapes and arrangements. In addition, a second mounting portion (230) in which a heating element (300) is in surface contact may be formed in the second heat sink (200), and the second mounting portion (230) may be formed in a shape corresponding to the shape of the heating element (300). The second mounting portion (230) may be formed in multiple numbers, and the plurality of second mounting portions (230) may be spaced apart in the height direction and length direction. In addition, a negative power source with a relatively low voltage may be applied to the second heat sink (200), and an electrode tab for connecting a power line may be formed in the second heat sink (200). Additionally, the second heat sink (200) may be formed in a divided form of three sheets, and the second heat sink (200) may be formed as a single sheet.

[0049] The heating element (300) is a part that generates heat when power is applied, and for example, the heating element (300) may be a PTC element. Also, a ventilation hole (310) that penetrates both sides in the width direction may be formed in the heating element (300). A first heat sink (100) may be laminated on one side of the heating element (300) and a second heat sink (200) may be laminated on the other side, so that the heating element (300) is interposed between the first heat sink (100) and the second heat sink (200). The ventilation hole (310) of the heating element (300) is positioned at a location corresponding to the first through hole (110) and the second through hole (210), so that the ventilation hole (310) communicates with the first through hole (110) and the second through hole (210), allowing air to pass through smoothly and heat dissipation to occur. Additionally, the heating element (300) may be in surface contact with the first mounting portion (130) of the first heat sink (100), and the heating element (300) may be in surface contact with the second mounting portion (230) of the second heat sink (200). Here, electrically conductive thermal grease may be interposed between the heating element (300) and the first mounting portion (130), and between the heating element (300) and the second mounting portion (230), respectively. Thus, power can be smoothly supplied to the heating element (300) through the first heat sink (100) and the second heat sink (200), and heat can be smoothly transferred from the heating element (300) to the first heat sink (100) and the second heat sink (200).

[0050] Thus, the vehicle heating device of the present invention allows for the free adjustment of the shape, quantity, and arrangement of heating elements, thereby reducing heat loss and ensuring uniformity of temperature distribution. Furthermore, the reduced air resistance in the heating elements enables efficient heat dissipation, and the minimized heat transfer medium between the heating elements and the heat sink improves heat dissipation performance.

[0051] FIG. 7 is a cross-sectional view taken in the height direction of a vehicle heating device according to the first embodiment of the present invention.

[0052] Additionally, the vehicle heating device of the present invention may further include a frame (400). For example, the frame (400) may be formed of an electrically insulating plastic material, and a first heat dissipation plate (100), a second heat dissipation plate (200), and a heating element (300) may be inserted and fixed inside the frame (400). The frame (400) may include a body (410), a first insertion part (420), and a second insertion part (430), and may further include a rib (440). For example, the body (410) may be formed in the shape of a square ring that surrounds the perimeter of the first heat dissipation plate (100) and the second heat dissipation plate (200). The first insertion part (420) is formed extending inward from one end of the body (410), and the first heat sink (100) can be inserted into the inside of the body (410) and supported by contacting the first insertion part (420). The second insertion part (430) is formed in a concave shape at the other end of the body (410), and the second heat sink (200) can be supported by contacting the inside of the second insertion part (430). Thus, the first heat sink (100) can be placed on one side of the frame (400), and the second heat sink (200) can be placed on the other side. And the first heat sink (100) is coupled to the first insertion part (420) and the second heat sink (200) is coupled to the second insertion part (430), and a heating element (300) can be squeezed between the first heat sink (100) and the second heat sink (200). The rib (440) can be formed in a shape that crosses the body (410), and the rib (440) can serve to support the first heat sink (100) so that it does not detach.

[0053] Additionally, a first bridge (120) crossing a first through hole (110) may be formed in the first heat sink (100) at a position corresponding to the ventilation hole (310) of the heating element (300), and a second bridge (220) crossing a second through hole (210) may be formed in the second heat sink (200) at a position corresponding to the ventilation hole (310) of the heating element (300). Thus, the heat exchange area can be increased by the first bridge (120) and the second bridge (220) in the area adjacent to the heating element (300) where the most heat conduction occurs, thereby improving heat dissipation performance. Furthermore, the heat dissipation performance can be further improved by forming the first bridge (120) and the second bridge (220) at positions that do not correspond to each other in the height direction and length direction.

[0054] Additionally, at least one of the first heat sink (100) and the second heat sink (200) may have a mounting portion formed protruding toward the heating element (300). As illustrated in the example, the second mounting portion (230) of the second heat sink (200) is formed protruding toward the heating element (300) to maintain a sufficient distance between the first heat sink (100) and the second heat sink (200), thereby preventing a short circuit when electricity flows directly between the first heat sink (100) and the second heat sink (200), and preventing an increase in air resistance. Furthermore, the opposite side of the protruding second mounting portion (230) may be formed concavely. That is, the second heat sink (200) can be formed using press forming to control the degree to which the second mounting portion (230) protrudes toward the heating element (300).

[0055] <Example 2>

[0056] FIGS. 10 and FIGS. 11 are an exploded perspective view and a cross-sectional view cut in the height direction showing a vehicle heating device according to a second embodiment of the present invention.

[0057] As described above, the frame (400) of the vehicle heating device of the present invention may further include a cover (450). For example, the cover (450) may be made of plastic material and formed integrally with the body (410), and the cover (450) may be formed in a shape that blocks the side of the body (410). That is, the cover (450) serves to prevent the first heat dissipation plate (100) from being directly exposed to the outside, thereby preventing safety accidents such as electric shock. In addition, a plurality of communication holes (451) that penetrate both sides in the width direction may be formed in the cover (450) in a shape corresponding to the first through hole (110) of the first heat dissipation plate (100).

[0058] Alternatively, an electrical insulating coating layer may be formed on one side of the first heat sink (100). That is, in the absence of a cover (450), safety accidents such as electric shock can be prevented by the electrical insulating coating layer formed on one side of the first heat sink (100). In addition, considering electrical safety, the second heat sink (200) to which negative power is applied may be positioned to face the driver's seat side, and the first heat sink (100) to which positive power is applied may be positioned to face the opposite side of the driver's seat of the vehicle.

[0059] FIGS. 12 and FIGS. 13 are front views showing an example of the shape and arrangement of a heating element in a vehicle heating device according to the present invention.

[0060] As illustrated, the heating elements (300) are provided in multiple numbers and arranged spaced apart in the height and length directions, and the multiple heating elements (300) may be arranged aligned in the height and length directions. Thus, uniformity of the temperature distribution of the vehicle heating device can be ensured. Alternatively, the heating elements (300) are provided in multiple numbers and arranged spaced apart in the height and length directions, and the multiple heating elements (300) may be arranged offset in the height and length directions. For example, as illustrated, the multiple heating elements (300) may be arranged offset in the length direction, and the multiple heating elements (300) may be arranged so that some areas overlap in the length direction. Thus, uniformity of the temperature distribution can be ensured. In addition, the ventilation holes (310) of the heating elements (300) may be formed in various shapes, arrangements, and numbers.

[0061] The present invention is not limited to the embodiments described above and has a diverse scope of application. Furthermore, it is understood that anyone with ordinary knowledge in the field to which the present invention pertains can make various modifications without departing from the essence of the invention as claimed in the claims.

[0062] [Explanation of the symbol]

[0063] 100: 1st heat sink, 110: 1st through hole, 120: 1st bridge

[0064] 130: First mounting portion, 200: Second heat sink, 210: Second penetration hole

[0065] 220: 2nd bridge, 230: 2nd mounting part, 300: heating element

[0066] 310 : Ventilation hole, 400 : Frame, 410 : Body

[0067] 420 : 1st insertion part, 430 : 2nd insertion part, 440 : Rib

[0068] 450: Cover, 451: Chimney hole

Claims

1. A heating element having ventilation holes formed on both sides penetrating in the direction of air flow; A first heat sink laminated on one surface of the heating element and having a plurality of first through holes formed that penetrate both sides in the direction of air flow, to which a positive power source is applied; and A second heat sink laminated on the other surface of the heating element, having a plurality of second through holes formed that penetrate both sides in the direction of air flow, and to which a negative power source is applied; comprising A vehicle heating device characterized in that the ventilation holes of the heating element are arranged to communicate with the first through hole and the second through hole.

2. In Paragraph 1, A first bridge is formed in the first heat sink at a position corresponding to the ventilation hole of the heating element, crossing the first through hole, and A vehicle heating device characterized by having a second bridge formed in the second heat sink that crosses the second through hole at a position corresponding to the ventilation hole of the heating element.

3. In Paragraph 1, A vehicle heating device characterized in that the first heat sink and the second heat sink each have a seating portion formed therein in which the heating element is in surface contact, and the seating portion is formed in a shape corresponding to the heating element.

4. In Paragraph 3, A vehicle heating device characterized in that at least one of the first heat sink and the second heat sink has a seating portion formed protruding toward the heating element.

5. In Paragraph 1, A vehicle heating device further comprising a frame in which the first heat sink, the second heat sink, and a heating element are inserted inside, wherein the first heat sink is positioned on one side and the second heat sink is positioned on the other side.

6. In Paragraph 5, The above frame is, A body surrounding the outer perimeter of the first and second heat sinks; A first insertion part extending inward from one end of the body to support the first heat sink; and A vehicle heating device comprising: a second insertion part formed concavely at the other end of the body to support the second heat sink.

7. In Paragraph 6, The above frame is, A vehicle heating device further comprising a cover that blocks one side of the body and has a plurality of communication holes formed corresponding to a plurality of first through holes of the first heat dissipation plate.

8. In Paragraph 1, A vehicle heating device characterized in that the heating element is a PTC element.

9. In Paragraph 1, A vehicle heating device characterized by having electrically conductive thermal grease interposed between the heating element and the first heat sink and between the heating element and the second heat sink, respectively.

10. In Paragraph 1, A vehicle heating device characterized by having an electrically insulating coating layer formed on one surface of the first heat sink.

11. In Paragraph 1, A vehicle heating device characterized by the fact that the heating elements are provided in plurality and arranged spaced apart in the height and length directions, and the plurality of heating elements are arranged aligned in the height and length directions.

12. In Paragraph 1, A vehicle heating device characterized by the fact that the above heating elements are provided in plurality and arranged spaced apart in the height direction and the length direction, and the plurality of heating elements are arranged offset in the height direction or the length direction.

13. In Paragraph 12, A vehicle heating device characterized by the above plurality of heating elements being arranged such that some areas overlap in the height direction or length direction.

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