High pressure heater for electric vehicle with heating ring heat flow path structure

Abstract

This invention relates to a high-pressure heater for electric vehicles with a heating ring heating flow path structure, and more specifically to such a high-pressure heater for electric vehicles with a heating ring heating flow path structure, wherein the installation and removal of the heating element is facilitated by the heating ring, and the heating flow path structure is improved. According to one embodiment of the invention, the high-pressure heater for electric vehicles with a heating ring heating flow path structure includes: a flow path formed on the lower surface of a heater body, the flow path having a tortuous flow path tube; a plurality of heating rings inserted into a plurality of fitting slots in the flow path tube and heated by external power; and a protective layer formed on the flow path tube to protect the plurality of heating rings. The tortuous flow path tube may include a plurality of straight flow paths and a plurality of curved flow paths.

Description

Technical Field

[0001] The present invention relates to a high-pressure heater for electric vehicles having a heating ring heating flow path structure, and more specifically, to such a high-pressure heater for electric vehicles having a heating ring heating flow path structure, wherein the installation and removal of the heating element can be facilitated by the heating ring, and the heating flow path structure is improved. Background Technology

[0002] Unless otherwise stated in this specification, the content described in this section is not prior art relative to the claims of this application and should not be construed as constituting prior art simply because it is included in this section.

[0003] Recently, with the increasing popularity of electric vehicles, the demand and supply of automotive electronic equipment are rapidly increasing. These electric vehicles are equipped with a large number of electronic components. Furthermore, electric vehicles require in-vehicle heating and air conditioning systems, making heating components, which function as electric heaters, essential. In recent years, methods have been adopted to increase heat output while reducing installation space. However, structural design challenges remain in achieving maximum heating area within a limited space.

[0004] In particular, the use of materials with high thermal conductivity is important for flow path tubes used to heat the fluids flowing within them. However, their application is limited by the cost of expensive materials. The design of flow path structures to maximize the heat transfer area of ​​the flow path tubes, and the design of corresponding electric heating elements for electrically heating the flow path tubes, have also become important issues.

[0005] In this regard, Korean Patent Publication No. 10-2021-0024967 (published March 8, 2021) discloses a fluid heater with the following configuration: electricity is applied to a heating pattern, which is a printed layer with resistors formed on a separate heating plate, and the heat generated by the heating pattern heats the fluid flowing through the flow path forming portion of the body. However, this fluid heater requires a circuit board with circuitry for heating the heating pattern on the separate heating plate. Furthermore, the overall configuration becomes complex due to the structure used to connect the terminals and electrodes, thus significantly increasing production costs.

[0006] Furthermore, Korean Patent Registration No. 10-1561004 (published October 15, 2015) discloses a belt heater for a manifold resin conduit, which has the following configuration: a heating wire is inserted into a fitting groove of a cylindrical heater body in a zigzag pattern to prevent the resin inside the manifold from curing, and electricity is applied to heat the heating wire, thereby heating the resin conduit inside the cylindrical heater body. However, this heater requires a significant amount of time and cost because it is difficult to mill the zigzag curved portion of the fitting groove of the heater body. Even when the heating wire, as a heating element, is inserted, the bending that occurs when changing the extension direction leads to distortion and deformation of the shape. Moreover, this deformation may lead to abnormal conditions and may cause problems such as reduced durability of the heating wire material.

[0007] Existing technical documents

[0008] Patent documents

[0009] (Patent Document 1) Korean Patent Publication No. 10-2021-0024967 (published on March 8, 2021)

[0010] (Patent Document 2) Korean Patent Registration No. 10-1561004 (Published on October 15, 2015) Summary of the Invention

[0011] The problem that the invention aims to solve

[0012] The present invention was made to solve the aforementioned problems of the prior art regarding high-pressure heaters for electric vehicles, and an object of the present invention is to provide a high-pressure heater for electric vehicles with an improved heating ring heating flow path structure, wherein a heating ring is formed on the outer surface of a circular tube through which the fluid flows, rather than a planar heating element with a printed layer, to generate heat, thereby simplifying the overall structure, facilitating manufacturing, increasing the heat transfer area of ​​the flow path tube, and enhancing the heating effect.

[0013] Furthermore, the aforementioned technical issues are not limited to those described above; other technical issues can be derived from the following description.

[0014] Problem-solving methods

[0015] A high-pressure heater for an electric vehicle with a heating ring heating flow path structure according to an embodiment of the present invention may include: a tortuous / zigzag flow path tube installed in a flow path formed on the inner lower surface of a heater body; a plurality of heating rings inserted into a plurality of fitting slots in the flow path tube and configured to be heated by electricity supplied from an external source; and a protective layer formed on the upper part of the flow path tube to protect the plurality of heating rings, wherein the tortuous flow path tube may include a plurality of straight flow paths and a plurality of curved flow paths.

[0016] According to a preferred embodiment of the invention, the flow path can be made of metal and can be formed by extrusion molding, and the fitting grooves on its outer surface can be formed by turning.

[0017] According to a preferred embodiment of the present invention, the plurality of heating rings can be electrically connected to each other in series or in parallel via power supply lines.

[0018] According to a preferred embodiment of the present invention, the fitting groove of the heating ring and the flow path tube may have an interference fit structure, and the heating ring may be inserted into the fitting groove having an opening, the opening being relatively narrower than its interior, thereby preventing the heating ring from easily detaching or shifting.

[0019] According to a preferred embodiment of the present invention, the material of the flow path tube may include any one selected from aluminum, copper or their alloys having high thermal conductivity.

[0020] According to a preferred embodiment of the present invention, the protective layer of the flow path may comprise an insulating material.

[0021] According to a preferred embodiment of the present invention, a plurality of grooves extending in the longitudinal direction can be formed on the inner surface of the flow path tube, and the plurality of grooves can be densely arranged in the circumferential direction of the flow path tube.

[0022] According to a preferred embodiment of the present invention, a plurality of micro-recesses or micro-protrusions may be formed on the inner surface of the flow path tube.

[0023] Beneficial effects

[0024] According to the present invention, a heating ring is formed on the outer surface of a circular pipe through which the fluid flows, increasing the heat transfer area of ​​the inner surface and forming a protective layer of insulating material, thereby providing a simple overall structure, easy manufacturing and enhanced heating effect, while providing economic benefits such as increased productivity and reduced costs.

[0025] The effects of the present invention are not limited to those described above, and should be understood to include all effects that can be inferred from the inventive structure set forth in the detailed description of the invention or the claims. Attached Figure Description

[0026] Figure 1 This is a schematic exploded perspective view showing a high-pressure heater with a heating ring heating flow path structure according to an embodiment of the present invention.

[0027] Figure 2 This is a perspective view showing the flow path (a) and heating ring (b) of a high-pressure heater with a heating ring heating flow path structure according to an embodiment of the present invention.

[0028] Figure 3 This is a side view of the flow path tube of a high-pressure heater having a heating ring heating flow path structure according to an embodiment of the present invention.

[0029] Figure 4 This is a cross-sectional view along the vertical axis of the flow path pipe of a high-pressure heater with a heating ring heating flow path structure according to an embodiment of the present invention.

[0030] Figure 5 This is a cross-sectional view taken along the longitudinal direction of the flow path pipe of a high-pressure heater having a heating ring heating flow path structure according to an embodiment of the present invention. Detailed Implementation

[0031] Hereinafter, a high-pressure heater for electric vehicles having a heating ring heating flow path structure according to a preferred embodiment will be described in detail with reference to the accompanying drawings.

[0032] For reference, in the accompanying drawings described below, for convenience and clarity, each component may be omitted or shown schematically, and the dimensions of each component do not necessarily reflect actual dimensions. Furthermore, throughout the specification, the same reference numerals refer to the same components, and reference numerals for the same components may be omitted in the various drawings.

[0033] Reference Figures 1 to 4 According to one embodiment of the present invention, a high-pressure heater 300 for an electric vehicle having a heating ring heating flow path structure may include: a tortuous flow path 200 installed in a flow path 130 formed on the inner lower surface 105 of a heater body 100; a plurality of heating rings 220 inserted into a plurality of fitting slots 210 of the flow path 200 and configured to be heated by electricity supplied from an external source; and a protective layer 240 formed on the flow path 200 to protect the plurality of heating rings 220, wherein the tortuous flow path 200 may include a plurality of straight flow paths 131 and a plurality of curved flow paths 132.

[0034] like Figure 1As shown, the high-pressure heater 300 for electric vehicles of the present invention typically includes a heater body 100, an upper cover 110, and a lower cover 120. An "S"-shaped flow path 130 is formed in a zigzag pattern on the lower surface 105 of the heater body 100, and a flow path pipe 200 is arranged and disposed in the heater body.

[0035] The fluid introduced through the fluid inlet port 140 is heated as it flows through the interior of the flow path 200. That is, the fluid is heated by a heating ring 220, which generates heat when electricity is applied to it. The heated fluid can then be delivered through the fluid outlet port 150 to an air conditioning unit for heating. Furthermore, the fluid can be supplied to electrical components or devices that need to be maintained at a predetermined temperature to prevent performance degradation.

[0036] Furthermore, when the flow path 200 is arranged in a tortuous pattern, a plurality of partition walls 135 are provided between the flow path 200 and the adjacent flow path 200. That is, the flow path 200 with partition walls sandwiched therebetween can be easily and reliably aligned on the lower surface 105 of the heater body.

[0037] In addition, such as Figure 1 As shown in the heater body 100, when the flow path 200 is arranged in a tortuous pattern in the flow path 130, it may include a straight flow path 131 formed as extending longitudinally, and a curved flow path 132 formed as extending in a curved shape and changing the direction of extension when the partition wall 135 is therebetween.

[0038] Here, the circular heating ring 220 inserted into the fitting groove 210 formed on the outer periphery of the flow path 200 of the present invention is configured to prevent the shape of the circular heating ring 220 from twisting or deforming even when the flow path 200 is bent and deformed due to the curved flow path 132. Therefore, durability is enhanced, and the following advantages are provided: it can alleviate the abnormal conditions caused by shape distortion of conventional heating elements.

[0039] Furthermore, in the heater body 100, electricity for heating the heating ring 220 inserted in the fitting groove formed on the outer periphery of the flow path tube 200 is connected to the terminal 225 of the heating ring 220, and the connector 160 for connecting the power supply to the terminal can be configured for high-voltage connection.

[0040] Figure 2 and Figure 3 The flow path 200 shown is made of metal and formed by extrusion, and the fitting groove 210 on its outer surface can be formed by turning. Figure 2 and Figure 3 In the original text, the protective layer 240 of the flow path pipe 200 was omitted.

[0041] In other words, such as Figure 2 As shown, the flow path 200 is formed by metal extrusion. In this case, as... Figure 4 As shown, serrated / serrated grooves 250 formed on the inner surface of the flow path 200 can be formed simultaneously. The serrated grooves 250 formed inside the flow path 200 improve heat transfer by increasing the heat transfer area in contact with the heated fluid. Furthermore, as... Figure 3 As shown, a plurality of grooves are formed at predetermined intervals on the outer surface of the extruded flow channel 200 by machining, and these grooves correspond to the fitting grooves 210 into which the heating ring 220 is inserted.

[0042] Although not shown in the accompanying drawings, the plurality of heating rings 220 inserted into the fitting slot 210 can be electrically connected to each other in series or in parallel via power supply lines.

[0043] In other words, the power supply line connected to the external power source can be... Figure 1 The connector 160 shown is introduced and can be mounted along the inner wall of the heater body adjacent to the flow path 200. For example, the power supply line can be connected via an elongated hole (not shown), or by forming a separate space (not shown) on the outer portion of the flow path 200, and can be connected via... Figure 1 The connector 160 shown is connected to an external power source.

[0044] In addition, such as Figure 5 As shown, the heating ring and fitting groove 210 of the flow path 200 have an interference fit connection structure. That is, the heating ring 220 is inserted into the fitting groove 210, which has an opening that is relatively narrower than the inner portion of the fitting groove, thereby preventing the heating ring 220 from easily dislodging or shifting. Figure 5 In the figure, the protective layer 240 of the flow path pipe 200 is omitted.

[0045] In other words, as an electrical component with resistance, the heating ring 220 functions as a heating element by generating heat when electricity is applied to it. By forming the inlet portion of the fitting groove 210 of the flow path 200 to be relatively narrow to prevent the heating ring from shifting or falling out of the fitting groove 210, the heating ring can be firmly installed by pressure during the interference fit process, and the fluid inside the flow path 200 can be heated normally.

[0046] As described above, the flow path 200 is designed to effectively heat the fluid flowing therein, and for this purpose, the material of the flow path 200 may include any one selected from aluminum, copper, or alloys thereof, which have high thermal conductivity.

[0047] In addition, such as Figure 4As shown, a separate protective layer 240 can be formed on the outer surface of the flow path 200 to protect the heating ring 220 inserted into the fitting groove 210 and prevent it from dislodging. Furthermore, the protective layer 240 can be formed of a heat-insulating material to retain heat from the heated flow path 200.

[0048] like Figure 4 As shown, multiple serrated grooves 250 can be formed on the inner surface of the flow path pipe 200 so that it extends in the longitudinal direction, and the multiple grooves 250 can be densely arranged in the circumferential direction of the flow path pipe 200.

[0049] In other words, as described above, the reason for forming longitudinally extending, serrated grooves 250 on the inner surface of the flow path 200 is to increase the heat transfer area of ​​the fluid in contact with it. Therefore, the heat transfer effect caused by heating can be enhanced.

[0050] In addition, in order to increase the contact area of ​​the fluid heated in the flow path 200, in addition to the serrated groove, multiple micro-concave or micro-convex portions with groove shapes can be formed on the inner surface of the flow path 200.

[0051] Although preferred embodiments of the present invention have been described above with reference to the accompanying drawings, the embodiments described herein and the configurations shown in the drawings are merely exemplary embodiments of the present invention and do not represent the entirety of the technical concept of the present invention. Therefore, it should be understood that various equivalents and modifications can be made thereto when this application is filed. Consequently, the above embodiments are illustrative in all respects and should not be construed as restrictive, and the scope of the present invention is defined by the claims set forth below rather than the foregoing detailed description, and all variations or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

[0052] Explanation of reference numerals in the attached figures

[0053] 100: Heater body, 105: Lower surface of heater body, 110: Top cover, 120: Bottom cover, 130: Flow path, 131: Straight flow path, 132: Curved flow path, 135: Partition wall, 140: Fluid inlet port, 150: Fluid outlet port, 160: Connector, 200: Flow path pipe, 210: Fitting groove of heating ring, 220: Heating ring, 225: Power terminal, 240: Protective layer, 250: Serrated groove / grooves with serrated distribution, 300: Heater.

Claims

1. A high-pressure heater for an electric vehicle with a heating ring heating flow path structure, the high-pressure heater comprising: A tortuous flow path tube, which is installed in a flow path formed on the inner lower surface of the heater body; Multiple heating rings are inserted into multiple fitting slots in the flow path tube and configured to generate heat by electricity supplied from an external source; as well as A protective layer is formed on the flow path tube to protect the plurality of heating rings. The meandering flow path includes multiple straight flow paths and multiple curved flow paths.

2. The high-pressure heater according to claim 1, wherein, The flow path tube is made of metal and is formed by extrusion, and the fitting groove on the outer surface of the flow path tube is formed by turning.

3. The high-pressure heater according to claim 1, wherein, The multiple heating rings are electrically connected to each other in series or in parallel via power supply lines.

4. The high-pressure heater according to claim 1, wherein, The heating ring and the fitting groove of the flow path pipe have an interference fit connection structure, and the heating ring is inserted into the fitting groove with an opening that is relatively narrower than the inner part of the fitting groove, thereby preventing the heating ring from easily coming out or shifting.

5. The high-pressure heater according to claim 1, wherein, The material of the flow path tube includes any one of the following: aluminum, copper, or their alloys, which have high thermal conductivity.

6. The high-pressure heater according to claim 1, wherein, The protective layer of the flow path tube contains an insulating material.

7. The high-pressure heater according to claim 2, wherein, Multiple grooves extending longitudinally in a serrated pattern are formed on the inner surface of the flow path tube, and the multiple grooves are densely arranged along the circumferential direction of the flow path tube.

8. The high-pressure heater according to claim 2, wherein, Multiple micro-recesses or micro-protrusions are formed on the inner surface of the flow path tube.

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