KR102592810B1 - Fluid heating apparatus for vehicle - Google Patents

Abstract

The present invention provides an annular coil that generates an induced magnetic field; a heating element that heats fluid by the induced magnetic field; and a substrate connected to the annular coil; It includes a housing for accommodating the annular coil, the heating element, and the substrate, wherein the housing includes a first accommodating part, a second accommodating part, and a third accommodating part, and the annular coil is disposed in the first accommodating part. , the substrate is disposed in the second accommodating part, and the third accommodating part is disposed between the first accommodating part and the second accommodating part, is isolated from the second accommodating part, and is located outside the housing and the By communicating with the first accommodating part, it is possible to provide a fluid heating device for a vehicle that discharges coolant that has leaked and flowed from the first accommodating part to the third accommodating part to the outside of the housing.

Description

Fluid heating apparatus for vehicle}

The embodiment relates to a fluid heating device for a vehicle.

A heating system using an engine cannot be applied to a motor-driven vehicle. Therefore, a separate heater is needed.

Republic of Korea Patent Publication No. 10-2017-0073973 (published on June 29, 2017, hereinafter referred to as this document) discloses a heater including a coil and a heating element that is inductively heated by the coil. The flow path contains a heating element, and the fluid flowing through the flow path is heated by the heating element subjected to induction heating. Meanwhile, the heater of this document includes a control case, and a substrate is disposed in the control case.

If water leaks from the heater, it may flow into the board and cause fatal problems. However, if a water leak occurs inside the heater, it is difficult to recognize it from the outside.

Republic of Korea Patent Publication No. 10-2017-0073973 (published on June 29, 2017)

The present invention aims to solve the problem of providing a fluid heating device for a vehicle that prevents leaked coolant from flowing into the substrate.

The problem to be solved by the present invention is not limited to the problems mentioned above, and other problems not mentioned here will be clearly understood by those skilled in the art from the description below.

The embodiment includes an annular coil that generates an induced magnetic field, a heating element that heats a fluid by the induced magnetic field, a substrate connected to the annular coil, and a housing that accommodates the annular coil, the heating element, and the substrate, , the housing includes a first accommodating part, a second accommodating part, and a third accommodating part, the annular coil is disposed in the first accommodating part, the substrate is disposed in the second accommodating part, and the second accommodating part is disposed in the second accommodating part. Provides a fluid heating device for a vehicle that is isolated from the accommodating part and communicates with the outside of the housing and the first accommodating part, thereby discharging the coolant that leaks and flows from the first accommodating part to the third accommodating part to the outside of the housing. can do.

Preferably, the housing includes a first partition wall and a second partition wall, and the first partition partitions the first accommodating part and the second accommodating part, and partitions the first accommodating part and the third accommodating part, The second partition wall protrudes from the first partition wall toward the second receiving portion. The second accommodating part and the third accommodating part may be partitioned, and the first partition wall may include a first hole that communicates the first accommodating part and the second accommodating part.

Preferably, the second partition wall is connected to a side wall of the housing to form the third accommodating part, and the housing has a second partition disposed on a first side wall of the side walls of the housing to form the third accommodating part and communicates with the outside. May include holes.

Preferably, the housing includes a first sealing member disposed to penetrate the second wall, and the wire connected to the annular coil may penetrate the first sealing member in a watertight manner and be connected to the substrate.

Preferably, the housing includes a cover that covers the second accommodating part and the third accommodating part, and a second sealing member is disposed between the side wall of the housing and the cover, and the second sealing member includes the first accommodating part. It may be disposed on the upper surface of the side walls of the housing excluding the first side wall and the upper surface of the second partition wall.

Preferably, the housing may include a flow path disposed below the first accommodating part, a first cover covering the first accommodating part, and a second cover covering the flow path.

Preferably, the heating element may be disposed in the flow path.

Preferably, the flow path includes an upper flow path and a lower flow path communicating with each other, and the upper flow path and the lower flow path may be separated by the heating element.

Preferably, the first cover may include a third partition that protrudes from the outer surface of the first cover and is disposed above the heating element to form the upper flow path.

Preferably, the second cover may include a fourth partition wall that protrudes from the inner surface of the second cover and is disposed below the heating element to form the lower flow path.

Preferably, the third partition wall and the fourth partition wall may be arranged to be aligned.

Preferably, the side wall of the housing includes a front, a rear, and a side, and an edge surface connecting the front and the side or connecting the rear and the side, and the housing has an inlet and an outlet communicating with the flow path. The inlet and the outlet may be disposed on the edge surface, and the second hole may be disposed on the edge surface.

According to the embodiment, it provides the advantageous effect of preventing leaked coolant from flowing into the substrate.

According to an embodiment, a coolant leak provides a beneficial effect that can be perceived from the outside.

According to the embodiment, it provides the advantageous effect of preventing moisture from entering the space where the substrate is accommodated.

1 is an exploded view of a fluid heating device for a vehicle according to an embodiment;
Figure 2 is a cross-sectional view showing the housing shown in Figure 1;
Figure 3 is a perspective view of the fluid heating device for a vehicle shown in Figure 1;
Figure 4 is a cross-sectional view of the fluid heating device for a vehicle based on AA in Figure 3;
Figure 5 is a diagram showing a third space portion,
Figure 6 is a view showing the first sealing member;
Figure 7 is a cross-sectional view showing a wire connecting a circular coil and a substrate;
8 is a cross-sectional view showing the flow of leaked coolant;
9 is a view showing a second sealing member;
Figure 10 is a cross-sectional view of the housing showing a flow path and a heating element.

The objectives, specific advantages and novel features of the present invention will become more apparent from the following detailed description and preferred embodiments taken in conjunction with the accompanying drawings. Additionally, terms or words used in this specification and patent claims should not be construed as limited to their usual or dictionary meanings, and the inventor should appropriately define the concept of terms in order to explain his or her invention in the best way. Based on the principle that it can be done, it must be interpreted with a meaning and concept consistent with the technical idea of the present invention. And in describing the present invention, detailed descriptions of related known technologies that may unnecessarily obscure the gist of the present invention are omitted.

Hereinafter, a fluid heating device for a vehicle according to an embodiment will be described in detail with reference to the attached drawings.

1 is an exploded view of a fluid heating device for a vehicle according to an embodiment.

Referring to FIG. 1, the fluid heating device for a vehicle according to an embodiment includes a housing 100, a substrate 200, a flow path 300, an annular coil 400, a heating element 500, and a shielding member ( 600), a first pad 700, and a second pad 800.

Figure 2 is a cross-sectional view showing the housing shown in Figure 1.

Referring to FIGS. 1 and 2 , the housing 100 may include a first accommodating part S1, a second accommodating part S2, a third accommodating part S3, and a flow path 300. The first accommodating part S1 and the second accommodating part S2 are partitioned by a first partition wall 110 disposed across the housing 100. With respect to the first partition wall 110, the first receiving part S1 is located below the first partition wall 110, and the second receiving part S2 is located above the first partition wall 110. The second accommodating part S2 and the third accommodating part S3 are partitioned by the second partition wall 120. The second partition wall 120 is disposed to protrude upward from the first partition wall 110. The third accommodating part S3 is located above the first accommodating part S1 and adjacent to the second accommodating part S2. The flow path 300 is disposed below the first accommodating portion S1. The flow path 300 and the first accommodating part S1 are partitioned by a second cover 130 that covers the first accommodating part S1. The third cover 140 covers the flow path 300. The space formed by the side wall of the housing 100 and the second cover 130 and the third cover 140 corresponds to the flow path 300 through which fluid flows.

The housing 100 may be made of aluminum, a non-magnetic material.

The annular coil is disposed in the first receiving portion (S1). The substrate 200 is disposed in the second receiving part S2.

The first partition 110 includes a first hole H1. The first hole H1 communicates the first accommodating part S1 and the third accommodating part S3. The first hole H1 is where a wire (W in FIG. 7 ) for electrically connecting the substrate 200 and the heating element 500 passes.

FIG. 3 is a perspective view of the fluid heating device for a vehicle shown in FIG. 1, and FIG. 4 is a cross-sectional view of the fluid heating device for a vehicle based on line A-A of FIG. 3.

Referring to FIG. 3, the side wall of the housing 100 may include a front 101, a rear 102, sides 103 and 104, and an edge surface 105. The edge surface 105 connects the front 101 and the sides 103 and 104, or connects the rear 102 and the sides 103 and 104.

Includes an inlet (100A) and an outlet (100B). The inlet (100A) and outlet (100B) are connected to the flow path (300). The direction of the inlet 100A and the direction of the outlet 100B may be the same. Since the inlet 100A and the outlet 100B are protruding structures, the size of the housing 100 can be reduced if the direction of the inlet 100A and the direction of the outlet 100B are the same. Additionally, the inlet 100A and the outlet 100B may be disposed on the corner surface 105. When the inlet 100A and the outlet 100B are placed on the corner surface 105, the size of the housing 100 can be reduced.

Referring to FIGS. 3 and 4 , the substrate 200 is located above the annular coil 400 with respect to the annular coil 400, and the flow path 300 is located below the annular coil 400. A heating element 500 is disposed inside the flow path 300. The heating element 500 generates heat by the induced current of the annular coil 400.

An overheating detection configuration, such as a bimetal, may be installed in the heating element 500. An insulated gate bipolar mode transistor (IGBT) 210 may be connected to the substrate 200. The upper side of the open housing 100 may be covered with a separate first cover 1000. The inlet (100A in FIG. 1) may be placed lower than the heating element 500. And the outlet 100B may be placed higher than the heating element 500.

An insulated gate bipolar mode transistor (IGBT) 210 may be connected to the substrate 200.

The inlet (100A in FIG. 1) may be placed lower than the heating element 500. And the outlet 100B may be placed higher than the heating element 500.

Referring to Figures 1 and 4, the annular coil 400 has a shape in which a linear coil is wound spirally on the same plane. The annular coil 400 is electrically connected to the substrate 200. The annular coil 400 generates an induced current. The annular coil 400 may be wound and arranged in multiple layers. If the annular coil 400 is a double layer, the inductance is increased compared to a single layer, allowing induced current to be generated at a lower frequency.

The first pad 700 covers the upper surface of the annular coil 400. The second pad 800 covers the lower surface of the annular coil 400. As shown in FIG. 1, a plurality of receiving grooves 710 are disposed on the upper surface of the first pad 700. The receiving groove 710 may be arranged in a radial direction from the center of the first pad 700. The arrangement shape of the plurality of receiving grooves 710 may be arranged to have an overall spoke shape.

A plurality of shielding members 600 may be provided. The shielding member 600 is disposed in the receiving groove 710. The shielding member 600 may have a hexahedral shape with a rectangular cross-section. The plurality of shielding members 600 may be arranged in a radial direction based on the center C of the annular coil 400. The plurality of shielding members 600 may be arranged to have an overall spoke shape. The shielding member 600 may be made of a soft magnetic material such as ferrite or santaste. This shielding member 600 has the advantage of blocking electromagnetic waves directed to the substrate 200 and generating induced current at a lower frequency. The shielding member 600 is arranged to overlap the annular coil 400. The plurality of shielding members 600 may be disposed at equal intervals along the circumferential direction of the fin-shaped coil.

Figure 5 is a diagram showing a third space portion.

Referring to FIG. 5 , the third space S3 is formed by the second partition wall 120 and the first side wall 106. The first side wall 106 is a part of the side wall of the housing 100 and may be a part of the corner surface 105 forming the third space S3. The second partition wall 120 protrudes from the first partition wall 110 . The second partition 120 is arranged to surround the first hole H1.

A first hole (H1) and a second hole (H2) are located in the third space (S3). The first hole H1 is formed through the upper and lower surfaces of the first partition 110. The second hole H2 is formed through the inner and outer surfaces of the first side wall 106. The second hole H2 communicates with the third space S3 and the outside. A first sealing member 121 is disposed on the second partition wall 120.

Figure 6 is a diagram showing the first sealing member.

Referring to Figures 5 and 6, the first sealing member 121 is disposed to penetrate the second wall 120. The first sealing member 121 includes a hole 121a. The hole 121a is formed through the inner and outer surfaces of the first sealing member 121. The hole 121a has a cylindrical surface. The surface of the wire W and the cylindrical surface of the hole 121a are in close contact, and the first sealing member 121 guides the wire W to the second space S2 so as to be watertight. This first sealing member 121 guides the wire W from the second space S2 to the third space S3, and connects the second space S2 where the substrate 200 is disposed with the outside. It serves to isolate the connected third space (S3).

Figure 7 is a cross-sectional view showing a wire connecting a circular coil and a substrate.

6 and 7, the wire W is connected to the annular coil 400. And the wire (W) penetrates the first hole (H1) and enters the third receiving part (S3). The wire (W) entering the third receiving part (S3) penetrates the first sealing member (121) and enters the second receiving part (S2). The wire W entering the second receiving portion S2 is connected to the substrate 200. The first sealing member 121 is disposed on the second partition wall 120 to be watertight.

Figure 8 is a diagram showing a wire.

Referring to FIG. 8, the wire W may include a core Wa and a covering Wb surrounding the core Wa. The core Wa is connected to an annular coil (400 in FIG. 7). An insulator (Wc) made of soft plastic is disposed between the core (Wa) and the covering (Wb). The insulator (Wc) serves to block moisture from entering between the core (Wa) and the covering (Wb).

Figure 9 is a cross-sectional view showing the flow of leaked coolant.

Referring to FIG. 9 , coolant leaking from the flow path 300 passes through the first space S1 and flows into the third space S3 through the first hole H1. The third space S3 is in communication with the second hole H2 and is at atmospheric pressure. On the other hand, the sealed second space S2 has a pressure higher than atmospheric pressure. Accordingly, the coolant flowing into the third space S3 does not flow into the second space S2, but is discharged to the outside of the housing 100 through the second hole H2.

Figure 10 is a diagram showing a second sealing member.

Referring to FIGS. 1, 3, and 10, the second sealing member 900 is disposed between the top of the side wall of the housing 100 and the first cover 1000. The second sealing member 900 may be disposed along the side wall of the housing 100. The second sealing member 900 may be disposed on the upper surface of the sidewall of the housing 100 excluding the first sidewall (106 in FIG. 5). The second sealing member 900 serves to prevent moisture or foreign substances from entering between the housing 100 and the first cover 1000. The second sealing member 900 may include an extension portion 910. The extension portion 910 may be disposed at the top of the first partition 120. When the housing 100 is viewed from above, the second space S2 is disposed outside the second sealing member 900. And the first hole (H1) and the second hole (H2) are disposed outside the second sealing member (900). The second space S2 and the third space S3 are watertightly partitioned through the extension portion 910.

Figure 11 is a cross-sectional view of the housing showing a flow path and a heating element.

Referring to FIGS. 1 and 11 , the flow path 300 is disposed between the second cover 130 and the third cover 140 . The flow path 300 may include an upper flow path 310 and a lower flow path 320. A heating element 500 is disposed in the passage 300. The upper passage 310 is disposed above the heating element 500, and the lower passage 320 is disposed below the heating element 500. The second cover 130 includes a third partition wall 131. The third partition 131 protrudes from the lower surface of the second cover 130 and contacts the upper surface of the heating element 500. The third cover 140 includes a fourth partition wall 141. The fourth partition 141 protrudes from the upper surface of the third cover 140 and contacts the upper surface of the heating element 500. The third partition wall 131 and the fourth partition wall 141 are arranged to be aligned.

Above, the fluid heating device for a vehicle according to a preferred embodiment of the present invention has been examined in detail with reference to the attached drawings.

The embodiment of the present invention described above should be understood in all respects as illustrative and not restrictive, and the scope of the present invention will be indicated by the claims to be described later rather than the detailed description given above. And the meaning and scope of this patent claim, as well as all changes or modifiable forms derived from the equivalent concept, should be construed as being included in the scope of the present invention.

100: housing
110: first bulkhead
120: second bulkhead
121: First sealing member
200: substrate
300: Euro
400: Annular coil
500: Heating element
600: Shielding member
700: first pad
800: second pad
900: Second sealing member

Claims (11)

an annular coil that generates an induced magnetic field;
a heating element that heats fluid by the induced magnetic field; and
a substrate connected to the annular coil;
It includes a housing for accommodating the annular coil, the heating element, and the substrate,
The housing includes a first accommodating part, a second accommodating part, and a third accommodating part,
The annular coil is disposed in the first receiving portion,
The substrate is disposed in the second accommodating portion,
The third receiving part,
Vehicle fluid heating that is isolated from the second accommodating part and communicates with the outside of the housing and the first accommodating part to discharge coolant that leaks and flows from the first accommodating part to the third accommodating part to the outside of the housing. Device. According to claim 1,
The housing includes a first partition wall and a second partition wall,
The first partition wall partitions the first accommodating part and the second accommodating part, and partitions the first accommodating part and the third accommodating part,
The second partition wall protrudes from the first partition wall toward the second receiving portion. dividing the second accommodating part and the third accommodating part,
The first partition wall is a fluid heating device for a vehicle including a first hole that communicates the first accommodating part and the second accommodating part. According to clause 2,
The second partition wall is connected to the side wall of the housing to form the third receiving portion,
The housing is a fluid heating device for a vehicle including a second hole disposed on a first side wall forming the third accommodating part among the side walls of the housing and communicating with the outside. According to clause 2,
The housing is,
It includes a first sealing member disposed to penetrate the second partition,
The wire connected to the annular coil penetrates the first sealing member in a watertight manner and is connected to the substrate. According to clause 3,
The housing is,
It includes a cover covering the second accommodating part and the third accommodating part,
A second sealing member is disposed between the side wall of the housing and the cover,
The second sealing member is disposed on the upper surface of the side wall of the housing excluding the first side wall and the upper surface of the second partition wall. According to clause 3,
The housing is a fluid heating device for a vehicle including a flow path disposed below the first accommodating part, a first cover covering the first accommodating part, and a second cover covering the flow path.
The heating element is a fluid heating device for a vehicle disposed in the flow path. According to clause 6,
The flow path includes an upper flow path and a lower flow path communicating with each other,
A fluid heating device for a vehicle in which the upper flow path and the lower flow path are separated by the heating element. According to clause 7,
The first cover is a fluid heating device for a vehicle including a third partition protruding from an outer surface of the first cover and disposed on an upper side of the heating element to form the upper flow path. According to clause 8,
The second cover is a fluid heating device for a vehicle including a fourth partition that protrudes from an inner surface of the second cover and is disposed on a lower side of the heating element to form the lower flow path. According to clause 9,
The third partition wall and the fourth partition wall are arranged to be aligned. According to clause 6,
The side walls of the housing are
It includes a front, a back, and a side, and an edge surface connecting the front and the side or connecting the back and the side,
The housing includes an inlet and an outlet communicating with the flow path,
The inlet and the outlet are disposed on the edge surface,
The second hole is a fluid heating device for a vehicle, wherein the second hole is disposed on the corner surface.

Images